CN102706747B - Bungee elastic rope test apparatus - Google Patents
Bungee elastic rope test apparatus Download PDFInfo
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- CN102706747B CN102706747B CN2012101701160A CN201210170116A CN102706747B CN 102706747 B CN102706747 B CN 102706747B CN 2012101701160 A CN2012101701160 A CN 2012101701160A CN 201210170116 A CN201210170116 A CN 201210170116A CN 102706747 B CN102706747 B CN 102706747B
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- elastic rope
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 230000007704 transition Effects 0.000 claims description 10
- 230000009471 action Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009661 fatigue test Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000000034 method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The invention relates to a bungee elastic rope test apparatus which comprises a swinging unit, a clamping unit, and a guiding traction unit, wherein the swinging unit is used for generating reciprocating swinging action in a preset travel; the clamping unit is used for clamping and fixing the first end of a detected bungee elastic rope; and the guiding traction unit is provided with a traction end and a guiding part, the traction end is fixedly connected with the second end of the detected bungee elastic rope, and the guiding part is coupled with the swinging unit, thereby being converted into stretching motion of the detected bungee elastic rope along the direction swinging action of the swinging unit.
Description
Technical Field
The invention relates to a recreation facility detection device, in particular to a bungee elastic rope test device.
Background
The bungee elastic rope is a key part of bungee equipment and has the characteristics of durability, high elasticity, ageing resistance and the like. Analysis of bungee elastic cord performance parameters will reduce the likelihood of accidents and is of great significance to ensure that people participating in the entertainment activity.
Also among the prior art has the fatigue test technique to the rope class, chinese patent CN201293745 discloses an intelligence stay cord fatigue test machine, including the switch board, motor and runner fixed mounting are on the switch board, the runner is driven by the motor, install the test platform who is used for placing the product of being surveyed on the switch board, the last guide rail that installs of test platform, the guide rail links to each other with the cylinder that drives its removal, install first support and the second support that can synchronous movement on the gas rail, first support passes through the connecting rod and links to each other with the second support, install on first support and can reciprocate be equipped with in making the perpendicular cylinder of being surveyed the product tensioning.
However, if the bungee elastic rope is simply moved for testing the durability, the high elasticity and the ageing resistance of the bungee elastic rope, the bungee elastic rope has obvious defects, and from the viewpoint of realizing the fatigue test of the pull rope, the technology is too complex, the motor is involved, and meanwhile, the air cylinder is required to be arranged, so that the cost is increased, in addition, due to the fact that the repeated work of the air cylinder is poor in inherent accuracy, the reached stroke and the reached pulling force can be reduced after the bungee elastic rope is subjected to repeated reciprocating motion, and the accuracy of the influence is further improved.
In view of the above-mentioned drawbacks, the present inventors have finally obtained the present creation through long-term studies and trials.
Disclosure of Invention
The invention aims to provide a bungee elastic rope test device which is used for overcoming the technical defects.
In order to achieve the above object, the present invention provides a bungee cord testing device, including:
a swing unit for generating a reciprocating swing motion within a predetermined stroke;
the clamping unit is used for clamping and fixing a first end of an elastic rope of the detected bungee;
the guide traction unit is provided with a traction end and a guide part, the traction end is fixedly connected with the second end of the detected bungee elastic rope, and the guide part is coupled with the swinging unit so as to convert the swinging motion of the swinging unit into stretching motion of the detected bungee elastic rope along the guide direction.
Preferably, the swing unit includes:
a motor for outputting a rotational motion;
one end of the swing rod is connected with an output shaft of the motor, at least one connecting hole is formed in the swing rod, and a pulley is selectively installed according to the requirement of a swing stroke.
Preferably, the guiding and pulling unit comprises:
a connecting seat;
the test bed is provided with the connecting seat and a guide rail;
the roller clamp can do linear motion along the guide rail, and one end of the roller clamp is the traction end and is fixedly connected with the second end of the detected bungee elastic rope;
and the steel wire rope is the guide part, one end of the steel wire rope is fixedly connected with the connecting seat, the other end of the steel wire rope is fixedly connected with the other end of the roller clamp, the steel wire rope is coupled with the pulley, and the roller clamp moves along the guide rail when the pulley swings along with the swing rod.
Preferably, the guiding traction unit further comprises:
the transition plate is arranged on one side of the test bed;
the two bosses are arranged on the transition plate, and holes are formed in the bosses;
and the two guide wheels are arranged in the holes of the bosses, and the steel wire rope penetrates between the guide wheels and extends into the guide rails along the direction of the guide rails.
Preferably, the connecting seat can be replaced by a lug, and the lug is arranged on the transition plate.
Preferably, the clamping unit is a fastener, one end of the clamping unit is fixedly connected with the end of the test bed guide rail, and the other end of the clamping unit is fixedly connected with the first end of the detected bungee elastic rope.
Preferably, the clamping unit includes:
the hand wheel is provided with a connecting flange, an axial threaded hole is formed in the middle of the hand wheel, and the hand wheel is arranged at the tail end of the test bed;
the adjusting rod is provided with external threads, is meshed with the threaded hole of the hand wheel and extends into the guide rail direction, and is stretched along the guide rail direction by rotating the hand wheel in different directions;
and the connecting block is arranged at one end of the adjusting rod and is fixedly connected with the first end of the detected bungee elastic rope.
Preferably, the end part of the test bed is provided with a supporting block, and the steel wire rope is led to the pulley along the connecting seat and the supporting block.
Compared with the prior art, the bungee jumping rope has the advantages of simple structure, convenience in assembly, small utilization space and convenience in adjusting the initial position of the bungee jumping rope to be detected.
Drawings
FIG. 1 is a schematic diagram of the bungee cord testing apparatus of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of a bungee cord testing apparatus of the present invention;
fig. 3 is a schematic view of a terminal structure of a second working platform according to an embodiment of the bungee cord testing device of the invention.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Please refer to fig. 1, which is a schematic diagram illustrating a schematic structure of a bungee cord testing apparatus according to the present invention, the bungee cord testing apparatus includes a swing unit a, a guiding and pulling unit b, and a clamping unit c, wherein the swing unit a is configured to generate a reciprocating swing motion within a predetermined stroke; the clamping unit c is used for clamping and fixing a first end of a detected bungee elastic rope; the guiding and pulling unit b has a pulling end and a guiding portion, the pulling end is fixedly connected with the second end of the detected bungee elastic rope 2, and the guiding portion is coupled with the swinging unit a, so that the guiding and pulling unit b is converted into stretching movement of the detected bungee elastic rope 2 along the guiding direction along with the swinging movement of the swinging unit a.
Referring to fig. 2, which is a schematic structural diagram of an embodiment of a bungee cord testing apparatus of the present invention, the bungee elastic cord 2 to be tested of the present invention needs to make a linear reciprocating motion, and the swing unit a includes a motor 8, the motor 8 is installed on a motor base 80, an output shaft of the motor 8 is connected with a swing link 7, a large end opening 700 of the swing link 7 is connected with an output shaft of the motor 8, and a plurality of holes 701 are axially arranged along the swing link 7 for connecting with a pulley 6, such that the swing link 7 connects the pulley 6 with the motor 8, and when the motor 8 works, the swing link 7 and the pulley 6 fixed thereon make a circular motion around the output shaft of the motor 8. Moreover, because the swing rod 7 is provided with a plurality of connecting holes 701 arranged at intervals, the pulleys 6 can be installed in the holes 701 according to requirements, and therefore the stroke can be adjusted.
It should be noted that, the invention is designed according to the crank-slider principle, the swing link 7 is equivalent to a crank in a crank-slider mechanism, and because the swing link 7 is provided with a plurality of connecting holes 701, the length of the crank is adjustable, so that bungee elastic ropes of different specifications can be tested.
The guide traction unit b comprises: a connecting seat 900; the test bed 501 is provided with the connecting seat 900, and the test bed 501 is provided with a guide rail 4; a roller clamp 3, which can move linearly along the guide rail 4, and one end of which is the traction end and is used for being fixedly connected with the second end of the detected bungee elastic rope 2; a wire rope 9, which is the guiding part, one end of which is fixedly connected with the connecting seat 900, the other end of which is fixedly connected with the other end of the roller clamp 3, the wire rope 9 is coupled with the pulley 6, and when the pulley 6 swings along with the swing rod 7, the roller clamp 3 moves along the guide rail 4. As shown in fig. 2, in the specific implementation, the test stand 501 is disposed at a distance from the motor base 80, and the work stand 501 is disposed perpendicular to the output shaft of the motor 8. The connecting seat 900 is arranged above the working table 501, the end 901 of the steel wire rope 9 is fixed on the connecting seat 900, meanwhile, a connecting seat 904 is further arranged above the working table 501, a supporting block 903 is arranged at the end of the working table 501, the steel wire rope 9 is led to the pulley 6 along the connecting seat 904 and the supporting block 903, and the connecting seat 904 and the supporting block 903 ensure that the steel wire rope 9 is horizontal on the working table 501 when the pulley 6 moves to the lower part, so that friction between the steel wire rope 9 and the working table 501 is avoided. A transition plate 502 is mounted at the end of the workbench 501 adjacent to the motor 8, two bosses 503 are arranged on the transition plate 502, horizontal holes are formed in the bosses 503, guide wheels 5 are mounted on the holes, and the distance between the bosses 503 is determined according to the size of the guide wheels 5. Thus, one end of the steel cable 9 is fixed on the workbench 501, extends from the end to wind on the pulley 6, passes through between the two guide wheels 5, and continues to extend along the guide rails 4 used in pairs, and the other end 902 of the steel cable 9 is connected with the roller clamp 3.
One end 901 of the steel wire rope 9 is fixed, the other end 902 is connected with a roller clamp and can move horizontally along the guide rail 4, and the guide wheel 5 clamps the steel wire rope 9 so that the steel wire rope can only move horizontally in the guide rail 4. The wire 9 thus corresponds to a connecting rod in a crank-slider mechanism.
The roller clamp 3 is arranged in the guide rail 4, the other end of the roller clamp is connected with the second end of the detected bungee elastic rope 2, and the first end of the detected bungee elastic rope 2 is fixed by the clamping unit c. For the present invention, the clamping unit c is a fastening member, one end of which is fixedly connected to the end of the test bed rail, and the other end of which is fixedly connected to the first end of the detected bungee elastic cord (not shown). This is simpler to implement, but is less convenient to install and adjust. Meanwhile, the invention also provides a second mode, that is, the clamping unit c comprises a hand wheel 101 with a connecting flange, an adjusting rod 102 with a long external thread and a plurality of connecting blocks, the hand wheel 101 is connected with the tail end of the workbench 501 through the connecting blocks, an axial threaded through hole is formed in the middle of the hand wheel 101, the adjusting rod 102 penetrates through the hand wheel 101 and a sleeve 103 with an internal thread, the tail end of the adjusting rod is fixedly connected with the detected bungee elastic rope 2 through the connecting blocks 104, and the hand wheel 101 is rotated to enable the adjusting rod 102 to rotate in the axial direction and move in the axial horizontal direction. Therefore, when the position of the pulley 6 on the swing rod 7 is changed to cause the length of the crank to be shortened, the steel wire rope 9 in the guide rail 4 extends out of the guide rail 4, and the detected bungee elastic rope 2 integrally moves forwards, the adjusting rod 102 can also extend forwards into the workbench, so that the clamping unit c can be always clamped and tightened.
The bungee elastic rope 2 to be detected can do telescopic motion along the linear direction under the action of the guide wheels 5 in the guide traction unit b. According to the movable pulley principle, the movement distance of the roller clamp 3 is 2 times of the movement distance of the oscillating bar 7, so that the movement amplification is realized, and the roller clamp 3 serves as a sliding block in a slider-crank mechanism, so that the oscillating unit a converts the rotation of the oscillating bar 7 into the horizontal movement of the roller clamp 3.
Before the test, the installation position of the pulley 6 is adjusted according to the characteristics of the detected bungee elastic rope 2, the length of a crank is determined, the clamping unit c is adjusted, the detected bungee elastic rope 2 is clamped to be in a natural straightening state, and the clamping unit c is locked.
During the experiment, motor 8 rotate, drive pendulum rod 7 rotates, pendulum rod 7 passes through pulley 6 stimulates wire rope 9 moves, under the effect of leading wheel 5, wire rope 9 in the guide rail 4 is followed 4 linear motion in the guide rail, with wire rope 9 is connected gyro wheel anchor clamps 3 is followed 4 linear motion in the guide rail, thereby it is right to realize being detected bungee elastic cord 2's experiment. As described above, since one end of the wire rope 9 is fixed, the movement thereof has an amplification effect, and the distance moved by the roller clamp 3 is 2 times the movement distance of the swing link 7. After the swing rod 7 rotates 180 degrees, the travel of the roller clamp 3 reaches the maximum, and then the roller clamp moves in the opposite direction under the resilience force of the detected bungee elastic rope 2 until the initial position is reached. Therefore, the swing rod 7 rotates one circle under the driving of the motor 8, and the sample completes one cycle of stretching and contracting of the detected bungee elastic rope 2.
In the motion, the equal-amplitude telescopic motion of the detected bungee elastic rope 2 is realized according to the principle of a crank-slider mechanism, a crank is the swing rod 7 provided with a motor output shaft, a connecting rod is the steel wire rope 9, and a slider is the roller clamp 3.
The crank (corresponding to the swing rod 7) rotates, and the sliding block (corresponding to the roller clamp 3) is driven by the connecting rod (corresponding to the steel wire rope 9) and constrained by the guide wheel 5 to linearly reciprocate along the guide rail 4; when the lengths of the connecting rod (corresponding to the steel wire rope 9) and the crank (corresponding to the swing rod 7) are fixed and unchanged, the reciprocating distance of the sliding block (corresponding to the roller clamp 3) is constant, and once the length of the crank (corresponding to the swing rod 7) is changed, the reciprocating distance of the sliding block (corresponding to the roller clamp 3) is changed.
It should be noted that, in the invention, the expansion and contraction motion of the bungee elastic rope 2 to be detected is similar to the actual working condition of the bungee elastic rope in the bungee motion, and the actual working condition of the bungee can be simulated in a test room through the test device of the invention.
In addition, this test bench 501 and motor cabinet 80 are supported by the stand, need fix on the ground, after making the foundation hole and pouring the concrete well according to the drawing requirement, install, move near the foundation hole to equipment, install rag bolt and fix it on machinery with the nut, fix machine and rag screw on the ground together, the adjustment position, pour rag bolt with cement, accomplish the installation fixed.
As shown in fig. 3, which is a schematic structural diagram of a terminal of a second working platform of an embodiment of the bungee cord test apparatus of the present invention, the guiding traction unit b of the present invention has an equivalent modification that the terminal 901 of the wire rope 9 can be fixed on the transition plate 502 at the terminal of the working platform 501, and from the implementation point, the lug 504 is arranged at the upper part of the transition plate 502, the terminal of the wire rope 9 is fixed on the lug 504, and the other structural features are the same as those in the first embodiment.
Due to the arrangement, the use of the connecting seat 904 is reduced, the length of the steel wire rope 9 between the tail end 901 and the pulley 6 is shortened, the stability of the whole device is facilitated, meanwhile, the pressure angle between the steel wire rope 9 and the pulley 6 is increased, the required driving force is reduced, in addition, the steel wire rope 9 is shortened, the influence of tensile deformation of the steel wire rope when the steel wire rope is stressed is reduced, and the system stability is improved.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. A bungee cord test apparatus, comprising:
a swing unit for generating a reciprocating swing motion within a predetermined stroke;
the clamping unit is used for clamping and fixing a first end of an elastic rope of the detected bungee;
the guide traction unit is provided with a traction end and a guide part, the traction end is fixedly connected with the second end of the detected bungee elastic rope, and the guide part is coupled with the swinging unit so as to convert the swinging motion of the swinging unit into stretching motion of the detected bungee elastic rope along the guide direction; wherein,
the swing unit includes:
a motor for outputting a rotational motion;
one end of the swing rod is connected with an output shaft of the motor, at least one connecting hole is formed in the swing rod, and a pulley is selectively installed according to the requirement of a swing stroke;
the guide traction unit comprises:
a connecting seat;
the test bed is provided with the connecting seat and a guide rail;
the roller clamp can do linear motion along the guide rail, and one end of the roller clamp is the traction end and is fixedly connected with the second end of the detected bungee elastic rope;
the steel wire rope is the guide part, one end of the steel wire rope is fixedly connected with the connecting seat, the other end of the steel wire rope is fixedly connected with the other end of the roller clamp, the steel wire rope is coupled with the pulley, and the roller clamp moves along the guide rail when the pulley swings along with the swing rod;
the transition plate is arranged on one side of the test bed;
the two bosses are arranged on the transition plate, and holes are formed in the bosses;
the two guide wheels are arranged in the holes of the lug boss, and the steel wire rope penetrates between the guide wheels and extends into the guide rail direction;
the clamping unit comprises:
the hand wheel is provided with a connecting flange, an axial threaded hole is formed in the middle of the hand wheel, and the hand wheel is arranged at the tail end of the test bed;
the adjusting rod is provided with external threads, is meshed with the threaded hole of the hand wheel and extends into the guide rail direction, and is stretched along the guide rail direction by rotating the hand wheel in different directions;
and the connecting block is arranged at one end of the adjusting rod and is fixedly connected with the first end of the detected bungee elastic rope.
2. The bungee cord testing apparatus of claim 1, wherein said attachment base is replaced with a lug, said lug being disposed on said transition plate.
3. A bungee cord test apparatus as claimed in claim 2 wherein said test bed end is provided with support blocks, said wire rope leading to said pulleys along said connection blocks and support blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101701160A CN102706747B (en) | 2012-05-25 | 2012-05-25 | Bungee elastic rope test apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101701160A CN102706747B (en) | 2012-05-25 | 2012-05-25 | Bungee elastic rope test apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102706747A CN102706747A (en) | 2012-10-03 |
| CN102706747B true CN102706747B (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101701160A Expired - Fee Related CN102706747B (en) | 2012-05-25 | 2012-05-25 | Bungee elastic rope test apparatus |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308291B (en) * | 2013-05-16 | 2015-09-02 | 国家电网公司 | Double-hook wire grip locking pin preventive inspection device |
| CN109297626B (en) * | 2018-08-14 | 2019-07-12 | 武义盘顺智能科技有限公司 | Leg pulling force real-time measurement mechanism |
| CN109765101A (en) * | 2019-03-13 | 2019-05-17 | 东莞现代产品整理服务有限公司 | Flexible body-building cord retraction durability test machine and its test method |
| CN109883898B (en) * | 2019-03-21 | 2020-05-29 | 中国矿业大学(北京) | Motion characteristic and dynamic characteristic testing device and testing system |
| CN110017960B (en) * | 2019-05-24 | 2021-05-14 | 徐州新南湖科技有限公司 | Bridge steel cable vibration detection simulator |
| CN113933163B (en) * | 2021-11-05 | 2024-05-24 | 湖南贝恩叮当猫婴童用品有限公司 | Paper diaper quality detection device and detection method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6550323B1 (en) * | 2000-02-28 | 2003-04-22 | The Goodyear Rubber & Tire Company | Fatigue machine for testing cord or filament |
| CN101183061B (en) * | 2006-11-14 | 2012-03-14 | 东芝电梯株式会社 | Wire rope end connector fatigue strength test apparatus |
| CN101408490B (en) * | 2008-10-30 | 2011-07-06 | 南京电子计量有限公司 | Rotating drive structure of pull rope fatigue tester |
| KR20120085884A (en) * | 2009-11-03 | 2012-08-01 | 인벤티오 아게 | Method and device for testing the tension stress in tension elements of a tension element cord |
| CN101865788B (en) * | 2010-05-21 | 2012-02-22 | 泰安鲁普耐特塑料有限公司 | Testing method for safe performance of power climbing rope |
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Granted publication date: 20131113 Termination date: 20160525 |