CN110700104A - Construction platform of suspension bridge suspender tensioning equipment and use method - Google Patents
Construction platform of suspension bridge suspender tensioning equipment and use method Download PDFInfo
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- CN110700104A CN110700104A CN201910986329.2A CN201910986329A CN110700104A CN 110700104 A CN110700104 A CN 110700104A CN 201910986329 A CN201910986329 A CN 201910986329A CN 110700104 A CN110700104 A CN 110700104A
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- construction platform
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction platform of suspension bridge suspender tensioning equipment and a use method thereof, and belongs to the field of bridge suspender tensioning auxiliary equipment. The construction platform comprises two parallel rails and a construction platform between the two rails, wherein the two rails are provided with limit grooves at equal intervals; an electric push rod is fixedly arranged on the bottom surface of the construction platform; a movable plate is fixedly connected to the free end of the electric push rod; the movable plate is connected to the construction platform in a sliding mode; the fixed end of the electric push rod is fixedly connected with a fixed plate; mounting grooves are formed in the movable plate and the fixed plate; locking structures are arranged in the two mounting grooves; when the construction platform moves, one of the locking structures is matched with the limiting groove; the construction platform is provided with a fixing mechanism and a tensioning device; the tensioning equipment is detachably connected with the construction platform through the fixing mechanism, so that the operation steps are greatly simplified, efficient and stable work is realized, and the tensioning equipment has excellent safety.
Description
Technical Field
The invention belongs to the technical field of bridge suspender tensioning auxiliary equipment, and particularly relates to a construction platform of suspension bridge suspender tensioning equipment and a use method.
Background
In the suspension bridge construction process of utilizing full hall support system construction, the back is accomplished in the installation of suspension system jib, need stretch-draw according to system conversion scheme to full-bridge jib, but the structure atress conversion is not accomplished to this moment, and full hall support can't be demolishd, not only leads to oil top tensioning equipment to install the difficulty in jib bottom, and manual work also has great potential safety hazard in addition. Most of the existing construction technologies adopt a winch to hoist oil top tensioning equipment, and the oil top tensioning equipment is tensioned one by one, so that the steps are complicated, the operation has safety problems, and the wide popularization is not facilitated.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a method for using a construction platform of suspension bridge suspender tensioning equipment.
In order to achieve the purpose, the invention adopts the following scheme:
a construction platform of suspension bridge suspender tensioning equipment comprises two parallel rails and a construction platform between the two rails, wherein the two rails are provided with limit grooves at equal intervals; an electric push rod is fixedly arranged on the bottom surface of the construction platform; a movable plate is fixedly connected to the free end of the electric push rod; the movable plate is connected to the construction platform in a sliding mode; the fixed end of the electric push rod is fixedly connected with a fixed plate; mounting grooves are formed in the movable plate and the fixed plate; locking structures are arranged in the two mounting grooves; when the construction platform moves, one of the locking structures is matched with the limiting groove; the construction platform is provided with a fixing mechanism and a tensioning device; the tensioning equipment is detachably connected with the construction platform through a fixing mechanism.
Furthermore, the two locking structures comprise connecting rods, locking rods, limiting blocks and first springs; one end of the connecting rod is connected in the mounting groove in a sliding manner; the other end of the connecting rod is hinged with one end of the locking rod; the locking rod is connected in the mounting groove through a rotating shaft; a limiting block is arranged in the mounting groove; the limiting block is positioned on one side of the locking rod, which is back to the connecting rod; the first spring is arranged in the mounting groove and connected with the connecting rod.
Further, the fixing mechanism comprises a fixing structure and a clamping structure; the fixing structure comprises a placing plate, a clamping jaw and an adjusting piece; the placing plate is fixedly connected to the middle part of the construction platform; the middle part of the placing plate is provided with a partition plate to divide the placing plate into an upper area and a lower area; the clamping jaw comprises a positioning part and an adjusting part; the positioning part is arranged on the inner side of the upper area of the placing plate; the positioning part is integrally connected with one end of the adjusting part; the other end of the adjusting part extends to the outer side of the upper area of the placing plate; the adjusting part is provided with an adjusting piece; the clamping structure comprises a driving part and a clamping part; the driving part comprises a hydraulic cylinder and a push block; the hydraulic cylinder is fixedly arranged on the construction platform of the lower area of the placing plate; the output end of the hydraulic cylinder is fixedly connected with the push block; the pushing block is connected to the construction platform in a sliding mode and is fixedly connected with a convex piece; the clamping part comprises a fixed sleeve, a cam, a piston rod, a second spring, a rotating rod and a clamping piece; the fixed sleeve is fixedly connected to the partition plate of the placing plate; the cam is connected between the fixed sleeve and the construction platform through a rotating shaft; the cam is matched with the convex piece; the piston rod is connected in the fixed sleeve through a second spring; one end of the piston rod is provided with a roller which is attached to the peripheral surface of the cam; the other end of the piston rod extends into the upper area of the placing plate; the rotating rod and the clamping piece are symmetrically arranged by taking the piston rod as an axis; one ends of the two rotating rods are connected to the partition plate of the placing plate through rotating shafts, and the ends are connected with piston rods located in the upper area of the placing plate in a matching mode; the other ends of the two rotating rods are provided with sliding grooves; the two clamping pieces are connected to the partition plate of the placing plate through a rotating shaft; one end of the clamping piece is connected in the sliding groove in a sliding mode, and the other end of the clamping piece is arranged freely.
Further, the adjusting piece is provided with two nuts; the two nuts are respectively positioned on two sides of the placing plate.
Furthermore, a notch matched with the convex piece is formed in the outer peripheral surface of the cam.
Furthermore, an arc-shaped clamping jaw is fixedly connected to the clamping piece.
Furthermore, a gear is arranged at one end, away from the sliding groove, of the rotating rod, and gear-meshed insections are arranged on the piston rod and located in the upper area of the placing plate.
The invention also discloses a using method of the construction platform of the suspension bridge suspender tensioning equipment, which comprises the following steps,
s1, flatly and fixedly installing the track on a scaffold at the bottom of the bridge floor, and respectively matching the front locking structure and the rear locking structure with limiting grooves on the track at the front end and the rear end of the construction platform;
s2, fixing the tensioning equipment on the construction platform by the adjusting and fixing mechanism;
s3, starting the electric push rod, driving the fixing plate to move forward to a position right below a suspender to be tensioned by the tensioning equipment through the outward extension of the free end, stopping the electric push rod, and then connecting the tensioning equipment with the suspender to realize the tensioning effect;
and S4, the electric push rod is started again, the movable plate is retracted through retraction of the free end, the rear free end extends to the position right below the next suspension rod to be tensioned of the tensioning equipment, and then the operation is circulated until all suspension rods on the whole bridge floor are tensioned.
Compared with the prior art, the invention can obtain the following technical effects:
according to the construction platform, the construction platform moves forwards on the track, the fixed plate moves forwards by utilizing the extension of the free end of the electric push rod to enable the whole construction platform to move forwards, the movable plate is recovered by utilizing the rear free end, in the process of moving forwards, specifically, the track on one side of the fixed plate extrudes the connecting rod under the action of the electric push rod to further rotate the locking rod, the free end pushes the movable plate and the groove wall of the limiting groove acts on the locking rod, the limiting block on the opposite side of the locking rod locks the limiting groove on one side of the movable plate to further push the whole construction platform to move forwards, otherwise, the movable plate moves forwards but the construction platform is located at the current position, the movable plate is repeatedly circulated to the position under the to-be-continued hanging rod, the continuous work of a manual or a winch is effectively avoided, and. The tensioning equipment clamped by the fixing mechanism stretches the suspension rod on the bridge floor, so that the operation is greatly simplified, and the operation safety is ensured. The process that the fixed mechanism specifically clamps the tensioning equipment is that the output end of the hydraulic cylinder pushes the push block to move, the convex part on the push block is matched with the sliding groove on the cam to enable the piston rod to be jacked to two rotating rods to be opened, and finally the clamping part fixes the tensioning equipment. The invention can improve the tensioning effect and efficiency and ensure the stability of the tensioning equipment in the using process.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic view of the overall structure of the fixing mechanism according to the present invention;
fig. 4 is a top view of the securing mechanism of the present invention.
In the figure: 1. a track; 2. a construction platform; 3. a limiting groove; 4. an electric push rod; 5. a movable plate; 6. a fixing plate; 7. mounting grooves; 8. tensioning equipment; 9. a connecting rod; 10. a lock lever; 11. a limiting block; 12. a first spring; 13. placing a plate; 14. a clamping jaw; 15. an adjustment member; 16. a positioning part; 17. an adjustment section; 18. a hydraulic cylinder; 19. a push block; 20. a male member; 21. fixing a sleeve; 22. a cam; 23. a piston rod; 24. a second spring; 25. rotating the rod; 26. a clamping member; 27. a chute.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1:
as shown in fig. 1 to 4, a construction platform of a suspension bridge suspender tensioning device comprises two parallel rails 1 and a construction platform 2 between the two rails 1, wherein the two rails 1 are provided with limit grooves 3 at equal intervals; an electric push rod 4 is fixedly arranged on the bottom surface of the construction platform 2; a movable plate 5 is fixedly connected with the free end of the electric push rod 4; the movable plate 5 is connected to the bottom surface of the construction platform 2 in a sliding manner; the fixed end of the electric push rod 4 is fixedly connected with a fixed plate 6, and the fixed plate 6 is fixedly connected with the construction platform 2; the movable plate 5 and the fixed plate 6 are both provided with mounting grooves 7; locking structures are arranged in the two mounting grooves 7; the locking structure on the movable plate 5 is matched with the limiting groove 3 through the outward extension of the free end of the electric push rod 4, the forward movement of the construction platform 2 is realized, when the movable plate is recovered, the locking structure on the fixed plate 6 is matched with the limiting groove 3, the movable plate 5 is enabled to move forwards, and the movable plate and the limiting groove are circulated to the position right below a tensioning suspender required by the movement of the construction platform 2. The construction platform 2 is provided with a fixing mechanism and a tensioning device 8; the tensioning equipment 8 is detachably connected with the construction platform 2 through a fixing mechanism, and the stability of the tensioning equipment 8 in the tensioning process can be guaranteed.
The further concrete scheme is as follows: the two locking structures comprise a connecting rod 9, a locking rod 10, a limiting block 11 and a first spring 12; one end of the connecting rod 9 is connected in the mounting groove 7 in a sliding manner; the other end of the connecting rod 9 is hinged with one end of the locking rod 10; the locking rod 10 is connected in the mounting groove 7 through a rotating shaft; a limiting block 11 is arranged in the mounting groove 7; the limiting block 11 is positioned on one side of the locking rod 10 back to the connecting rod 9; the first spring 12 is disposed in the mounting groove 7 and connected with the connecting rod 9. Connecting rod 9 is located spacing groove 3 with the one end that locking pole 10 is connected under the effect of first spring 12, and locking pole 10 keeps the transverse state under the effect of stopper 11 simultaneously, and when the antedisplacement, the cell wall of spacing groove 3 makes connecting rod 9 receive the extrusion to connecting rod 9 effect, causes the locking pole to rotate to construction platform 2's middle part, realizes the antedisplacement when locking pole 10 breaks away from spacing groove 3.
The further concrete scheme is as follows: the fixing mechanism comprises a fixing structure and a clamping structure; the fixing structure comprises a placing plate 13, a clamping jaw 14 and an adjusting piece 15; the placing plate 13 is fixedly connected to the middle part of the construction platform 2; the placing plate 13 is divided into an upper area and a lower area by a partition plate arranged in the middle; the jaw 14 comprises a positioning portion 16 and an adjusting portion 17; the positioning part 16 is arranged at the inner side of the upper area of the setting plate 13; the positioning part 16 is integrally connected with one end of the adjusting part 17; the other end of the adjusting part 17 extends to the outer side of the upper area of the placing plate 13; the adjusting part 17 is provided with an adjusting piece 15; the gripping jaws 14 are adjusted to the desired position by means of the adjustment members 15, avoiding that the tensioning devices 8 on the construction platform 2 are not directly below (required tensioning booms). The clamping structure comprises a driving part and a clamping part; the driving part comprises a hydraulic cylinder 18 and a push block 19; the hydraulic cylinder 18 is fixedly arranged on the construction platform 2 at the lower area of the placing plate 13; the output end of the hydraulic cylinder 18 is fixedly connected with the push block 19; the pushing block 19 is connected to the construction platform 2 in a sliding manner, and the pushing block 19 is fixedly connected with a convex part 20; the clamping part comprises a fixing sleeve 21, a cam 22, a piston rod 23, a second spring 24, a rotating rod 25 and a clamping piece 26; the fixed sleeve 21 is fixedly connected on the partition plate of the placing plate 13; the cam 22 is connected between the fixed sleeve 21 and the construction platform 2 through a rotating shaft; cam 22 mates with male member 20; the piston rod 23 is connected in the fixed sleeve 21 through a second spring 24; one end of the piston rod 23 is provided with a roller which is attached to the peripheral surface of the cam 22; the other end of the piston rod 23 extends into the upper area of the placing plate 13; the two rotating rods 25 and the two clamping pieces 26 are symmetrically arranged by taking the piston rod 23 as an axis; one end of each of the two rotating rods 25 is connected to the partition plate of the installation plate 13 through a rotating shaft, and the end is connected with the piston rod 23 located in the upper area of the installation plate 13 in a matching manner; the other ends of the two rotating rods 25 are provided with sliding chutes 27; the two clamping pieces 26 are connected to the partition plate of the placing plate 13 through a rotating shaft; one end of the holding member 26 is slidably connected in the slide groove 27, and the other end is freely provided. The process that the fixing mechanism specifically clamps the tensioning equipment 8 is that the output end of the hydraulic cylinder 18 pushes the push block 19 to move, the convex part 20 on the push block 19 is matched with the cam 22 to enable the piston rod 23 to be jacked until the two rotating rods 25 are opened, the clamping part 26 is finally clamped inwards to fix the tensioning equipment 8, when the output end of the hydraulic cylinder 18 is recovered, the convex part 20 on the push block 19 is separated from the cam 22, the piston rod 23 is reset under the action of the second spring 24 and extrudes the cam 22 to finally enable the clamping part 26 to loosen the tensioning equipment 8, the operation is greatly simplified, and meanwhile, the stability of the tensioning equipment in the tensioning process can be guaranteed.
The further concrete scheme is as follows: the adjusting piece 15 is two nuts; the two nuts are respectively positioned on two sides of the placing plate 13. The precision of the tensioning device can be guaranteed by adjusting the two nuts, so that the tensioning device is located right below the suspender.
The further concrete scheme is as follows: the cam 22 has a notch formed in its outer peripheral surface to match the male member 20. The locking cam 22 is convenient for keeping the piston rod 23 in a jacking state for a long time, and the tensioning equipment 8 is efficient and stable.
The further concrete scheme is as follows: the clamping piece 26 is fixedly connected with an arc-shaped clamping jaw, so that the stable effect on the tensioning equipment 8 is ensured.
The further concrete scheme is as follows: the one end that dwang 25 kept away from spout 27 is equipped with the gear, is located and is equipped with gear engagement's insection on the piston rod 23 of place board 13 upper segment, makes its high efficiency realize the function of opening and shutting of dwang 25.
Example 2:
a method for using a construction platform of a suspension bridge suspender tensioning device comprises the following steps,
s1, flatly and fixedly installing the track 1 on a scaffold at the bottom of the bridge floor, and respectively matching the front locking structure and the rear locking structure with the limiting grooves 3 on the track 1 at the front end and the rear end of the construction platform 2;
s2, fixing the tensioning equipment 8 on the construction platform 2 by the adjusting and fixing mechanism, specifically, the output end of the hydraulic cylinder 18 pushes the push block 19 to move, the convex part 20 on the push block 19 is matched with the cam 22 to lift the piston rod 23 to open the two rotating rods 25, and finally the clamping part 26 is clamped inwards to fix the tensioning equipment 8;
s3, starting the electric push rod 4, driving the fixing plate 6 to move forward to a position right below a suspender to be tensioned of the tensioning equipment 8 through the outward extension of the free end, stopping the electric push rod 4, and then connecting the tensioning equipment 8 with the suspender to realize the tensioning effect; the moving forward process is that the movable plate 5 is fixed, one end of the connecting rod 9 on the fixed plate 6, which is connected with the locking rod 10 under the action of the first spring 12, is positioned in the limiting groove 3, meanwhile, the locking rod 10 keeps a transverse state under the action of the limiting block 11, when the moving forward is performed, the groove wall of the limiting groove 3 acts on the connecting rod 9 to extrude the connecting rod 9, so that the locking rod rotates towards the middle part of the construction platform 2, and when the locking rod 10 is separated from the limiting groove 3, the moving forward is realized;
s4, the electric push rod 4 is started again, the movable plate 5 is retracted through free end retraction, the fixed plate 6 is not moved in the forward moving process, one end, connected with the locking rod 10, of the connecting rod 9 on the movable plate 5 is located in the limiting groove 3 under the action of the first spring 12, meanwhile, the locking rod 10 is kept in a transverse state under the action of the limiting block 11, when the movable plate is moved forward, the groove wall of the limiting groove 3 acts on the connecting rod 9 to enable the connecting rod 9 to be extruded, the locking rod is enabled to rotate towards the middle of the construction platform 2, and when the locking rod 10 is separated from the limiting groove 3, the forward moving is achieved; and after the rear free end extends to the position right below the next suspension rod to be tensioned of the tensioning equipment 8, the operation is circulated until the suspension rods on the whole bridge deck are all tensioned.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. A construction platform of suspension bridge suspender tensioning equipment comprises two parallel rails (1) and a construction platform (2) between the two rails (1), and is characterized in that the two rails (1) are provided with limit grooves (3) at equal intervals; an electric push rod (4) is fixedly arranged on the bottom surface of the construction platform (2); a movable plate (5) is fixedly connected with the free end of the electric push rod (4); the movable plate (5) is connected to the construction platform (2) in a sliding manner; the fixed end of the electric push rod (4) is fixedly connected with a fixed plate (6); the movable plate (5) and the fixed plate (6) are both provided with mounting grooves (7); locking structures are arranged in the two mounting grooves (7); one of the locking structures is matched with the limiting groove (3) when the construction platform (2) moves; a fixing mechanism and a tensioning device (8) are arranged on the construction platform (2); the tensioning equipment (8) is detachably connected with the construction platform (2) through a fixing mechanism.
2. A construction platform of a suspension bridge boom tensioning device according to claim 1, characterized in that both locking structures comprise a connecting rod (9), a locking rod (10), a stop block (11) and a first spring (12); one end of the connecting rod (9) is connected in the mounting groove (7) in a sliding manner; the other end of the connecting rod (9) is hinged with one end of the locking rod (10); the locking rod (10) is connected in the mounting groove (7) through a rotating shaft; a limiting block (11) is arranged in the mounting groove (7); the limiting block (11) is positioned on one side of the locking rod (10) back to the connecting rod (9); the first spring (12) is arranged in the mounting groove (7) and is connected with the connecting rod (9).
3. A construction platform for a suspension bridge boom tensioning apparatus according to claim 1 wherein the securing mechanism comprises a securing structure and a clamping structure; the fixing structure comprises a placing plate (13), a clamping jaw (14) and an adjusting piece (15); the placing plate (13) is fixedly connected to the middle part of the construction platform (2); the arrangement plate (13) is divided into an upper area and a lower area by a partition plate arranged in the middle; the clamping jaw (14) comprises a positioning part (16) and an adjusting part (17); the positioning part (16) is arranged on the inner side of the upper area of the placing plate (13); the positioning part (16) is integrally connected with one end of the adjusting part (17); the other end of the adjusting part (17) extends to the outer side of the upper area of the placing plate (13); the adjusting part (17) is provided with an adjusting piece (15); the clamping structure comprises a driving part and a clamping part; the driving part comprises a hydraulic cylinder (18) and a push block (19); the hydraulic cylinder (18) is fixedly arranged on the construction platform (2) at the lower area of the placing plate (13); the output end of the hydraulic cylinder (18) is fixedly connected with the push block (19); the push block (19) is connected to the construction platform (2) in a sliding manner, and the push block (19) is fixedly connected with a convex part (20); the clamping part comprises a fixed sleeve (21), a cam (22), a piston rod (23), a second spring (24), a rotating rod (25) and a clamping piece (26); the fixed sleeve (21) is fixedly connected to the partition plate of the placing plate (13); the cam (22) is connected between the fixed sleeve (21) and the construction platform (2) through a rotating shaft; the cam (22) is matched with the convex part (20); the piston rod (23) is connected in the fixed sleeve (21) through a second spring (24); one end of the piston rod (23) is provided with a roller which is attached to the peripheral surface of the cam (22); the other end of the piston rod (23) extends into the upper area of the placing plate (13); the two rotating rods (25) and the two clamping pieces (26) are symmetrically arranged by taking the piston rod (23) as an axis; one ends of the two rotating rods (25) are connected to the partition plate of the placing plate (13) through rotating shafts, and the ends are connected with the piston rod (23) located in the upper area of the placing plate (13) in a matching mode; the other ends of the two rotating rods (25) are provided with sliding grooves (27); the two clamping pieces (26) are connected to the partition plate of the placing plate (13) through rotating shafts; one end of the clamping piece (26) is connected in the sliding groove (27) in a sliding mode, and the other end of the clamping piece is arranged freely.
4. A construction platform for a suspension bridge boom tensioning device according to claim 3, characterised in that the adjustment members (15) are two nuts; the two nuts are respectively positioned on two sides of the placing plate (13).
5. A construction platform for a suspension bridge boom tensioning device according to claim 3, characterised in that the outer circumference of the cam (22) is notched to match the male member (20).
6. A construction platform for a suspension bridge boom tensioning device according to claim 3, characterised in that arc-shaped jaws are fixedly connected to the clamping members (26).
7. A construction platform for a suspension bridge boom tensioning device according to claim 3, characterized in that the end of the turning rod (25) remote from the slide groove (27) is provided with a gear, and the piston rod (23) in the upper region of the installation plate (13) is provided with a gear engaging insection.
8. Use of a construction platform for a suspension bridge boom tensioning device according to claims 1 to 7, characterized by the steps of,
s1, flatly and fixedly installing the track (1) on a scaffold at the bottom of the bridge floor, and respectively matching the front locking structure and the rear locking structure with limiting grooves (3) on the track (1) at the front end and the rear end of the construction platform (2);
s2, fixing the tensioning equipment (8) on the construction platform (2) by the adjusting and fixing mechanism;
s3, starting the electric push rod (4), driving the fixing plate (6) to move forward to a position right below a suspender to be tensioned of the tensioning equipment (8) through the outward extension of the free end, stopping the electric push rod (4), and then connecting the tensioning equipment (8) with the suspender to realize the tensioning effect;
and S4, the electric push rod (4) is started again, the movable plate (5) is retracted through retraction of the free end, the rear free end extends to a position right below a suspension rod to be tensioned below the tensioning equipment (8), and the operation is circulated until the suspension rods on the whole bridge deck are all tensioned.
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CN113577514A (en) * | 2021-09-03 | 2021-11-02 | 遂昌县人民医院 | Drainage tube capable of relieving postoperative pain of thoracic cavity and convenient to fix and using method thereof |
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CN113577514A (en) * | 2021-09-03 | 2021-11-02 | 遂昌县人民医院 | Drainage tube capable of relieving postoperative pain of thoracic cavity and convenient to fix and using method thereof |
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