CN215444807U - Safe and convenient coupler - Google Patents
Safe and convenient coupler Download PDFInfo
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- CN215444807U CN215444807U CN202120497526.0U CN202120497526U CN215444807U CN 215444807 U CN215444807 U CN 215444807U CN 202120497526 U CN202120497526 U CN 202120497526U CN 215444807 U CN215444807 U CN 215444807U
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- coupling
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Abstract
The utility model discloses a safe and portable coupler. The disclosed coupler comprises two connecting pieces, two clamping blocks and a limiting sleeve, wherein the two clamping blocks and the limiting sleeve are in butt joint in the radial direction; a second through hole arranged along the axial direction is formed in the two clamping blocks after the two clamping blocks are butted; the two connecting pieces are axially arranged in the second through hole; the limiting sleeve is sleeved outside the two butt-joint clamping blocks along the axial direction. The shaft coupling utilizes the connecting piece to connect a shaft to be connected, such as a driving shaft and a valve rod shaft, then the split clamping blocks are placed and sleeved in the limiting sleeves, meanwhile, gaps at reasonable positions are reserved to disperse pressure build-up in the shaft coupling, and the mounting difficulty is effectively reduced.
Description
Technical Field
The utility model relates to a coupler, in particular to a safe and convenient coupler structure, which is particularly suitable for a valve coupler in a large-caliber and high-pressure environment, and particularly used as a coupler for a valve rod of a straight-stroke valve and an output shaft of an actuator.
Background
At present, the valve couplers in a plurality of high-pressure environments have the problems of pressure build-up, inconvenience in operation and the like, for example, a straight-stroke valve actuator and a straight-stroke valve are connected by mostly adopting threads to clamp blocks and are fastened by utilizing screws, the connecting structure requires that the valve coaxiality is higher, the threads of the clamp blocks are easy to damage, the installation difficulty is higher, and certain safety risk exists when the actuator is disassembled from the clamp blocks during pressure build-up.
Disclosure of Invention
In response to the shortcomings or drawbacks of the prior art, the present invention provides a safe and portable coupling.
To this end, the utility model provides a safe and portable coupling comprising:
the connecting piece comprises two connecting pieces, each connecting piece comprises a body with a T-shaped axial section, a first through hole is formed in the T-shaped body along the axial direction, a shaft or a valve rod to be connected is arranged in each first through hole, the T-shaped body is formed by a body A and a body B which are arranged along the axial direction, and the radial dimension of the body A is larger than that of the body B;
the two clamping blocks are butted along the radial direction, a second through hole arranged along the axial direction is formed in the two clamping blocks after the two clamping blocks are butted, the second through hole is formed by end holes at two end parts and a middle cavity, and the inner diameter of the middle cavity is larger than that of the end holes;
a limiting sleeve;
the two connecting pieces are axially arranged in the second through holes, bodies A of the two connecting pieces are positioned in the middle cavity, bodies B of the two connecting pieces are respectively positioned in the end holes at the two end parts, and after the two bodies A are accommodated in the middle cavity, a first gap is reserved in the axial direction and a second gap is reserved in the radial direction;
the limiting sleeve is sleeved outside the two butt-joint clamping blocks along the axial direction.
Optionally, the inner wall of the first through hole is provided with threads.
Further, each end of the body B axially extends out of the corresponding end hole.
And the locking device further comprises two locking nuts, and the two locking nuts are respectively fixed on the end parts of the bodies B extending out of the corresponding end holes.
Optionally, the axial dimension of the first gap is 0.3mm-2 mm.
Further, a second gap is reserved in the radial direction after the two bodies A are accommodated in the middle cavity; the radial dimension of the second gap is 0.3mm-2 mm.
Preferably, a third gap is radially reserved after the two clamping blocks are accommodated in the limiting sleeve, and the radial size of the third gap is 0.3mm-2 mm.
Furthermore, a limiting through hole is formed in the side wall of the limiting sleeve, and a limiting rod is arranged in the limiting through hole and perpendicular to the side wall of the limiting sleeve.
Further, still include limiting plate and spacing pointer, prevent changeing and be equipped with the draw-in groove on the pointer, spacing pointer is installed perpendicularly on searching for the book gag lever post, the limiting plate sets up at the shaft coupling side along axial fixity, and is equipped with the scale along the axial on the limiting plate, the draw-in groove card is established on the limiting plate, and can follow limiting plate axial activity.
Furthermore, the local area of the limiting through hole on the outer wall of the limiting sleeve is of a plane structure.
Furthermore, the limiting rod is in contact with the outer wall of the clamping block, and the contact area is of a plane structure.
Furthermore, a positioning through hole is formed in the side wall of the limiting sleeve and used for installing a travel switch.
The shaft coupling utilizes the connecting piece to connect a shaft to be connected, such as a driving shaft and a valve rod shaft, then the split clamping blocks are placed and sleeved in the limiting sleeves, meanwhile, gaps at reasonable positions are reserved to disperse pressure build-up in the shaft coupling, and the mounting difficulty is effectively reduced.
The coupling is particularly suitable for connecting the electro-hydraulic actuator and the valve used in long-distance pipelines, oil depots and tank areas. The problem that the pressure build-up disassembly and assembly are concentric with the valve rod of the valve is effectively solved, and the reliable operation of the valve is ensured.
Drawings
FIG. 1 is a top reference view of the coupling of the present invention;
FIG. 2 is a reference schematic diagram of the axial cross-sectional structure of the coupling of the present invention;
fig. 3 is a reference diagram showing the structure of the connector of the present invention.
Detailed Description
Unless otherwise specified, the terminology herein is to be understood in light of the knowledge of one of ordinary skill in the relevant art.
The axial direction is the direction perpendicular to the plane of the paper shown in fig. 1, and the radial direction is the direction opposite to the axial direction; other directional or orientational terms such as inner, outer, end, middle and the like are consistent with the orientation or orientation of the relevant component or integral structure in the drawings of the specification. It is to be understood that the terms of orientation and direction are not intended to be limiting, and that equivalent alterations, rotations, etc. may be made by those skilled in the art from the disclosure herein.
As shown in fig. 1-3, the coupling of the present invention comprises two connecting members (6,8) having a T-shaped axial cross-sectional profile, two clamping blocks 3 butted in a radial direction, and a limiting sleeve 1; wherein:
each connecting piece (6,8) main body is a body with an axial section in a T shape, a first through hole is arranged in the body along the axial direction, the body is composed of a body A and a body B which are arranged along the axial direction, and the radial dimension of the body A is larger than that of the body B, namely, the radial dimension corresponds to the T shape;
after the two clamping blocks 3 which are butted along the radial direction are butted, a second through hole which is arranged along the axial direction is formed in the inner part, the second through hole is formed by end holes which are positioned at two end parts and a middle cavity which is positioned between the two end holes, and the radial size of the middle cavity is larger than the inner diameter of the end holes at the two ends;
when the two to-be-connected shafts (4,10) are connected along the axial direction in a centering way, the two connecting pieces are respectively arranged on the two to-be-connected shafts, specifically, each to-be-connected shaft is arranged in the first through hole, and meanwhile, the two bodies A are opposite/close/contacted in the axial direction;
then arranging the two clamping blocks outside the two connecting pieces and connecting the two clamping blocks in a radial direction in a butt joint mode, wherein the two connecting pieces are positioned in the second through hole, specifically, the two bodies A are positioned in the middle cavity, and the two bodies B are positioned in the two end holes respectively;
then the limiting sleeve is sleeved outside the two clamping blocks for further fixing;
it should be noted that after the connecting shaft is assembled, a certain axial gap is reserved between the bodies A of the two connecting pieces to ensure that the bodies A of the two connecting pieces are tightly attached to two axial end surfaces in the middle cavity, so that when the two connecting shafts work, the accumulated force is distributed on the two clamping blocks, and the accident that parts collapse and shoot due to pressure building during disassembly is avoided; a further preferable installation mode is that one of the shafts to be connected is specifically the end of the lower shaft 10 to be connected shown in fig. 2, which is aligned with the port of the first through hole, and the upper shaft 4 to be connected extends out of the port of the first through hole by a certain distance, which is the axial gap existing between the bodies a of the two connecting pieces, so as to further assist in realizing the centering of the two shafts with the connecting shafts.
In the scheme in addition, after the assembly, certain radial clearance is radially left simultaneously after the middle part cavity holds two connectors, and the operating mode requirements such as centering, material deformation are satisfied in the during operation, promote the work efficiency of shaft coupling.
When the connecting piece is disassembled, the two connecting pieces are butted by moving one of the connecting pieces, and then the limiting sleeve and the clamping block are sequentially disassembled.
It should be further explained that the cross-sectional shapes of the connecting piece, the two clamping blocks after being butted along the radial direction and the limiting sleeve can be designed into suitable shapes, such as a circle, a shape close to a circle, a polygon and the like.
The size of the axial gap or/and the radial gap in the above scheme can be determined according to the working requirement of the shaft to be connected. One example is 0.3mm-2mm each.
On the basis of the above scheme, a further optional scheme is that after the two clamping blocks are positioned in the limiting sleeve, a certain reasonable radial gap is reserved between the limiting sleeve and the clamping blocks, and the size of the radial gap can be determined according to the working requirement of the shaft to be connected. One example is 0.3mm-2mm each.
In the specific scheme, the inner wall of the first through hole in the connecting piece is provided with threads, namely the connecting piece is further connected with the shaft to be connected through the threads.
In a further scheme, in order to further realize the reliability of connection fixation and meet the working environment with higher pressure, the bodies B of the two connecting pieces extend out of the second through hole along opposite directions so as to realize further fastening at the extending sections, specifically, fastening by adopting locking nuts (5 and 9). In a more specific scheme, a hexagonal nut can be adopted for fastening.
On the basis of the scheme, the problem that the connecting shaft is likely to rotate in the working process is considered, a limiting through hole can be formed in the side wall of the limiting sleeve, and a limiting rod 2 is installed in the limiting through hole, and particularly, if a limiting bolt is used, the limiting rod 2 can be clamped on a side suitable limiting structure, so that the whole structure is prevented from rotating.
Suitable limit structure can be the frame or the fixed knot of shaft coupling place whole equipment and construct, also can be the limit structure who sets up specially, like limiting plate (not shown in the figure) and spacing pointer 11, prevent changeing and be equipped with the draw-in groove on the pointer, specifically if shown be U type draw-in groove, spacing pointer is installed perpendicularly on searching the book gag lever post, the limiting plate sets up at the shaft coupling side along axial fixity, and is equipped with the scale along the axial on the limiting plate, the draw-in groove card is established carry on spacingly on the limiting plate, and can follow the axial activity of limiting plate and satisfy two campaign requirements of treating the connecting axle.
In a further preferred scheme, in order to realize a better limiting effect, the local area of the outer wall of the limiting sleeve, where the limiting through hole is located, is of a planar structure. Furthermore, the local area of one clamping block, which is contacted with the limiting rod, is of a plane structure.
In a further scheme, in order to realize positioning monitoring, a positioning through hole can be further arranged on the side wall of the limiting sleeve, and a travel switch 7 for controlling an axial movement switch is arranged in the positioning through hole.
It should be noted that the scope of the present invention is not limited to the specific embodiments described in the above specific embodiments, but falls within the scope of the present invention as long as the combination of the technical features of the claims of the present invention is satisfied.
Claims (12)
1. A safe and portable coupling, comprising:
the connecting piece comprises two connecting pieces, each connecting piece comprises a body with a T-shaped axial section, a first through hole is formed in the T-shaped body along the axial direction, a shaft or a valve rod to be connected is arranged in each first through hole, the T-shaped body is formed by a body A and a body B which are arranged along the axial direction, and the radial dimension of the body A is larger than that of the body B;
the two clamping blocks are butted along the radial direction, a second through hole arranged along the axial direction is formed in the two clamping blocks after the two clamping blocks are butted, the second through hole is formed by end holes at two end parts and a middle cavity, and the inner diameter of the middle cavity is larger than that of the end holes;
a limiting sleeve;
the two connecting pieces are axially arranged in the second through holes, bodies A of the two connecting pieces are positioned in the middle cavity, bodies B of the two connecting pieces are respectively positioned in the end holes at the two end parts, and a first gap is reserved in the middle cavity in the axial direction after the two bodies A are accommodated in the middle cavity;
the limiting sleeve is sleeved outside the two butt-joint clamping blocks along the axial direction.
2. The safety and easy coupling of claim 1, wherein the first through hole is threaded on an inner wall thereof.
3. A safety and expedient coupling as set forth in claim 1 wherein each body B end extends axially out of a respective end bore.
4. A safety and convenience coupling according to claim 3 further comprising two locking nuts respectively secured to the ends of each body B extending out of the respective end apertures.
5. The safety and expedience coupling of claim 1, wherein the first clearance axial dimension is 0.3mm-2 mm.
6. The coupling of claim 1, wherein a second gap is radially left after the two bodies a are received in the central cavity; the radial dimension of the second gap is 0.3mm-2 mm.
7. The safety and easy coupling of claim 1, wherein a third gap is radially left after the two clamping blocks are accommodated in the limiting sleeve, and the third gap has a radial dimension of 0.3mm to 2 mm.
8. The safe and convenient coupler according to claim 1, wherein the side wall of the limiting sleeve is provided with a limiting through hole, and a limiting rod is arranged in the limiting through hole and is vertical to the side wall of the limiting sleeve.
9. The safe and convenient coupler according to claim 8, further comprising a limiting plate and a limiting pointer, wherein the anti-rotation pointer is provided with a clamping groove, the limiting pointer is vertically installed on the book searching limiting rod, the limiting plate is axially fixed and arranged beside the coupler, the limiting plate is axially provided with scales, and the clamping groove is clamped on the limiting plate and can axially move along the limiting plate.
10. The safety and convenience coupling of claim 8, wherein the partial area of the outer wall of the limiting sleeve where the limiting through hole is located is of a planar structure.
11. The safety and convenience coupling of claim 7, wherein the stop lever contacts an outer wall of a clamping block, and the contact area is a planar structure.
12. The safety and convenience coupling of claim 1, wherein the side wall of the limit sleeve is provided with a positioning through hole for mounting the travel switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120497526.0U CN215444807U (en) | 2021-03-09 | 2021-03-09 | Safe and convenient coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120497526.0U CN215444807U (en) | 2021-03-09 | 2021-03-09 | Safe and convenient coupler |
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| Publication Number | Publication Date |
|---|---|
| CN215444807U true CN215444807U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120497526.0U Active CN215444807U (en) | 2021-03-09 | 2021-03-09 | Safe and convenient coupler |
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| CN (1) | CN215444807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810845A (en) * | 2022-04-28 | 2022-07-29 | 洛阳轴承研究所有限公司 | Spline transmission device capable of realizing self-elimination of transmission side clearance |
| CN118268533A (en) * | 2024-05-24 | 2024-07-02 | 广州市型腔模具制造有限公司 | Integrated oversized die convenient to quick change |
-
2021
- 2021-03-09 CN CN202120497526.0U patent/CN215444807U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810845A (en) * | 2022-04-28 | 2022-07-29 | 洛阳轴承研究所有限公司 | Spline transmission device capable of realizing self-elimination of transmission side clearance |
| CN118268533A (en) * | 2024-05-24 | 2024-07-02 | 广州市型腔模具制造有限公司 | Integrated oversized die convenient to quick change |
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