Universal pipe cable horizontal bending behavior testing device

Abstract

The invention discloses a universal pipe cable horizontal bending behavior testing device, and belongs to the technical field of pipe cable testing, and the device comprises a first clamp and a third clamp which are oppositely arranged, and a supporting table which is arranged on the ground in a manner that the relative distance can be changed in a first direction; the second clamping table is arranged between the first clamp and the third clamp and is movably arranged on the supporting table on the ground in the second direction; the second clamping table is in driving connection with the traction equipment; the first direction is perpendicular to the second direction; the middle of the pipe cable body is located in the second clamping table, and the two ends of the pipe cable body are located in the first clamp and the third clamp respectively. And during testing, the traction equipment transversely pulls the pipe cable main body placed in the middle along the second direction through the second clamping table, so that the middle part of the pipe cable main body is horizontally bent. The device is high in adaptability, the caliber of the test pipe cable can be dynamically adjusted, and the length of the pipe cable can be adjusted by adjusting the positions of the clamps at the two ends.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe and cable testing, and in particular relates to a universal pipe and cable horizontal bending behavior testing device. Background Art

[0002] The horizontal bending test of cables is to evaluate the mechanical and electrical properties of cables, optical fibers, wires, etc. when they are bent in the horizontal direction. This test is very important to ensure that the cables can withstand the expected bending stress during actual installation and use.

[0003] The devices for testing pipes and cables in the prior art have the following disadvantages:

[0004] 1. Low adaptability. Different pipes and cables have different sizes and lengths. The test device needs to be adjusted according to the size and length of the pipes and cables, and the fixture that is suitable for them needs to be replaced;

[0005] 2. High cost. The production cost of adapter fixtures of different sizes is high, and the subsequent maintenance cost is also high;

[0006] 3. The friction resistance is high. When the clamp is clamping and fixing the pipe and cable, there is a large friction resistance between the clamp and the pipe and cable, which is easy to affect the test data in the subsequent experimental test process. Summary of the invention

[0007] In order to provide a method that can effectively solve the loose displacement problem of the tunnel interval evacuation platform, the present invention adopts the following technical solutions:

[0008] A universal tube and cable horizontal bending behavior testing device, comprising:

[0009] A clamp No. 1 and a clamp No. 3 are arranged opposite to each other, and the clamp No. 1 and the clamp No. 3 are arranged on a support platform on the ground so that a relative distance between the clamp No. 1 and the clamp No. 3 can be changed in a first direction;

[0010] A second clamping platform, the second clamping platform is arranged between the first clamping fixture and the third clamping fixture, and is movably arranged on a support platform on the ground in the second direction; the second clamping platform and the first clamping fixture and the third clamping fixture are horizontally equidistantly distributed in the first direction; the second clamping platform is drivingly connected to the traction device; the first direction and the second direction are arranged vertically;

[0011] Among them, the middle part of the duct and cable body is located in the No. 2 clamp, and the two ends of the duct and cable body are respectively located inside the No. 1 clamp and the No. 3 clamp; during the test, the traction equipment uses the No. 2 clamp to laterally pull the duct and cable body placed in the middle along the second direction so that the middle part of the duct and cable body is horizontally bent.

[0012] Furthermore, it also includes a data acquisition unit and a data analysis and processing unit;

[0013] The data acquisition unit includes a threaded pressure sensor and a threaded temperature sensor arranged at both ends of the tube and cable body, and a patch temperature sensor arranged outside the tube and cable body near the ends of both ends;

[0014] During the lateral traction and horizontal bending process, the data of the cable body is collected by the threaded pressure sensor, the threaded temperature sensor and the patch temperature sensor, and then fed back to the strain gauge through the cable, and then fed back to the data analysis and processing unit for data analysis, and relevant test data is fed back by calculating the displacement distance, traction strength and combining temperature data.

[0015] Furthermore, the structure of the clamp No. 1 is the same as that of the clamp No. 3; the clamp No. 1 comprises:

[0016] Active frame with L-shaped structure;

[0017] A vertically fixed pole connected to one side of the upper end surface of the active frame, wherein the vertical pole and the active frame form a U-shaped structure;

[0018] A side of the active frame away from the vertical pole is rotatably connected to a No. 1 roller;

[0019] The passive frame is slidably arranged at one end of the active frame close to the vertical pole, and the interior of the passive frame is rotatably connected with a No. 2 roller.

[0020] Furthermore, the bottoms of the No. 1 roller and the No. 2 roller are spindle-shaped structures.

[0021] Furthermore, bolts are symmetrically threadedly connected to the upper and lower sides of the front and rear end surfaces of the vertical pole, and a slide groove 1 is provided on the outer surface of the passive frame at a position corresponding to the bolt, and the bolt is located inside the slide groove 1; a slide groove 2 is provided inside the passive frame, and the vertical pole is located inside the slide groove 2 and can be arranged to change its relative position.

[0022] Further, the No. 2 clamping platform includes a No. 3 clamp and a No. 4 clamp which are arranged opposite to each other; the No. 3 clamp and the No. 4 clamp have the same structure as the No. 1 clamp; the No. 3 clamp and the No. 4 clamp are both slidably arranged on the support platform along the second direction;

[0023] One side end surface of the No. 3 clamp and the No. 4 clamp is fixedly connected with a transverse fixing rod, and a connecting seat is fixed in the middle of the transverse fixing rod. The connecting seat is connected to the traction device, and the traction device is one of a hydraulic cylinder or a pneumatic cylinder.

[0024] Furthermore, a plurality of rotating bearings are arranged at intervals at the lower ends of the active frames of the third clamp and the fourth clamp, a slide rail is arranged on the support platform along the second direction, and the plurality of rotating bearings are rollingly fitted on the slide rail.

[0025] Furthermore, limit blocks are vertically fixed on both sides of the upper end surface of the slide rail, a pull-wire displacement sensor is fixedly connected between the active frame in the second clamping platform and the limit blocks, and a patch temperature sensor is fixed on the outside of the cable body.

[0026] Furthermore, a triangular support platform for supporting and fixing the traction equipment is fixed on one side of the upper end surface of the two slide rails.

[0027] Furthermore, both ends of the pipe cable body are connected and fixed with pipelines, and the pipelines are connected with a low temperature pressure test pump.

[0028] Beneficial effects:

[0029] 1. High adaptability, the diameter of the test tube and cable can be adjusted dynamically, and the length of the tube and cable can be adjusted by adjusting the position of the clamps at both ends;

[0030] 2. Low cost. No need to re-manufacture the device according to different sizes of pipes and cables, which can reduce costs;

[0031] 3. Low friction, the bearing device is used in the middle of the fixture. After contacting with the pipe and cable, the bearing slides and will not affect the experimental data;

[0032] 4. Good installation performance. The bottom of the roller of the fixture adopts an arc-shaped support to support the test pipe and cable, thereby reducing resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is the overall structural view of the present invention;

[0034] Figure 2 An exploded view of a clamp No. 1 of the present invention;

[0035] Figure 3 This is a view of the combination of the No. 1 clamp and the tube cable body of the present invention;

[0036] Among them: 1. No. 1 clamp; 11. Active frame; 12. No. 1 roller; 13. Vertical pole; 14. Bolt; 15. No. 2 roller; 16. Slide trough 1; 17. Slide trough 2; 18. Passive frame; 2. No. 2 clamping platform; 3. Horizontal fixing rod; 4. Slide rail; 41. Pull-wire displacement sensor; 5. No. 3 clamp; 6. Pipe and cable body; 7. Threaded pressure sensor; 8. Threaded temperature sensor. DETAILED DESCRIPTION

[0037] Example 1

[0038] refer to Figure 1-Figure 3 , a universal tube and cable horizontal bending behavior test device, comprising:

[0039] A clamp No. 1 and a clamp No. 3 5 are arranged opposite to each other, and the clamp No. 1 and the clamp No. 3 5 are arranged on a support platform on the ground so that the relative distance between them can be changed in a first direction;

[0040] The second clamping platform 2 is arranged between the first clamp 1 and the third clamp 5, and is movably arranged on a support platform on the ground in the second direction; the second clamping platform 2 and the first clamp 1 and the third clamp 5 are horizontally equidistantly distributed in the first direction; the second clamping platform 2 is drivingly connected to the traction device; and is vertically arranged in the first direction and the second direction;

[0041] Among them, the middle part of the duct and cable body 6 is located in the No. 2 clamping platform 2, and the two ends of the duct and cable body 6 are respectively located inside the No. 1 clamp 1 and the No. 3 clamp 5; during the test, the traction equipment uses the No. 2 clamping platform 2 to laterally pull the duct and cable body 6 placed in the middle along the second direction to make the middle part of the duct and cable body 6 bend horizontally.

[0042] The universal umbilical cable horizontal bending behavior testing device provided in this embodiment also includes a data acquisition unit and a data analysis and processing unit;

[0043] The data acquisition unit includes a threaded pressure sensor 7 and a threaded temperature sensor 8 arranged at both ends of the tube cable body 6, and a patch temperature sensor arranged outside the tube cable body 6 near the ends of both ends;

[0044] During the lateral traction and horizontal bending process, the data of the cable body 6 is collected by the threaded pressure sensor 7, the threaded temperature sensor 8 and the patch temperature sensor, and then fed back to the strain gauge through the cable, and then fed back to the data analysis and processing unit for data analysis, and the relevant test data is fed back by calculating the displacement distance, traction strength and combining the temperature data.

[0045] In this embodiment, the structure of the first clamp 1 and the third clamp 5 is the same; the first clamp 1 includes:

[0046] Active frame 11 of L-shaped structure;

[0047] A vertical rod 13 is fixedly connected to one side of the upper end surface of the active frame 11, and the vertical rod 13 and the active frame 11 form a U-shaped structure;

[0048] A side of the active frame 11 away from the vertical rod 13 is rotatably connected to a first roller 12;

[0049] The passive frame 18 is slidably disposed at one end of the active frame 11 close to the vertical rod 13 , and a No. 2 roller 15 is rotatably connected inside the passive frame 18 .

[0050] In this embodiment, the bottoms of the No. 1 roller 12 and the No. 2 roller 15 are arranged in a spindle-shaped structure, which has good installation performance, and the bottoms are arc-shaped supports, which can support the test pipe cable, thereby achieving resistance reduction.

[0051] In this embodiment, the upper and lower sides of the front and rear end surfaces of the vertical rod 13 are symmetrically threadedly connected with bolts 14, and the outer surface of the passive frame 18 is provided with a slide groove 16 at a position corresponding to the bolt 14, and the bolt 14 is located inside the slide groove 16; the interior of the passive frame 18 is provided with a slide groove 2 17, and the vertical rod 13 is located inside the slide groove 2 17 and can be arranged to change the relative position.

[0052] In this embodiment, the second clamping platform 2 includes a third clamp and a fourth clamp which are arranged opposite to each other; the third clamp and the fourth clamp have the same structure as the first clamp 1; the third clamp and the fourth clamp are both slidably arranged on the support platform along the second direction;

[0053] One side end surface of the No. 3 clamp and the No. 4 clamp is fixedly connected with a transverse fixing rod 3, and a connecting seat is fixed in the middle of the transverse fixing rod 3. The connecting seat is connected to the traction device, and the traction device is a hydraulic cylinder or a gas cylinder.

[0054] Specifically, a plurality of rotating bearings are arranged at intervals at the lower ends of the active frame 11 of the No. 3 clamp and the lower ends of the active frame 11 of the No. 4 clamp, and a slide rail 4 is arranged on the support platform along the second direction. The plurality of rotating bearings roll in cooperation with the slide rail 4, and after contacting with the pipe and cable, the bearings slide with low friction, which will not affect the experimental data.

[0055] Among them, limit blocks are vertically fixed on both sides of the upper end surface of the slide rail 4, a pull-wire displacement sensor 41 is fixedly connected between the front side of the active frame 11 in the second clamping platform 2 and the limit blocks, and a patch temperature sensor is fixed on the outside of the cable body 6.

[0056] In this embodiment, a triangular support platform for supporting and fixing the traction device is fixed to one side of the upper end surface of the two slide rails 4 .

[0057] In this embodiment, both ends of the pipe cable body 6 are connected and fixed with pipelines, and the pipelines are connected with the low temperature pressure test pump.

[0058] The working principle of the universal cable horizontal bending behavior test device provided by the present invention is as follows:

[0059] First, before conducting a transverse bending test on the umbilical cable body 6, the distances between the No. 1 clamp 1, the No. 3 clamp 5 and the No. 2 clamping platform 2 on both sides are adjusted according to the length of the umbilical cable body 6, and the bottoms of the No. 1 clamp 1 and the No. 3 clamp 5 are fixedly connected to the support platform placed on the ground by bolts, and then the distances between the No. 1 clamp 1, the No. 2 clamping platform 2 and the No. 1 roller 12 and the No. 2 roller 15 in the No. 3 clamp 5 are adjusted according to the outer diameter of the umbilical cable body 6. At this time, the user manually slides the passive frame 18 on the active frame 11 until the outer surfaces of the No. 1 roller 12 and the No. 2 roller 15 on the passive frame 18 and the active frame 11 are in contact with the umbilical cable body 6, and the spindle structures of the No. 1 roller 12 and the No. 2 roller 15 are located on the umbilical cable body 6. On the lower side of the outer surface, the spindle-shaped cambered surface fits with the surface of the tube and cable body 6. During this process, the vertical pole 13 is relatively displaced in the second slide groove 17, and the bolt 14 is relatively displaced in the first slide groove 16. After the adjustment is completed, the position of the passive frame 18 on the active frame 11 is fixed by screwing the bolt 14, and then the threaded pressure sensor 7 and the threaded temperature sensor 8 are respectively installed at both ends of the tube and cable body 6, and the patch temperature sensor is installed at the position near the two ends of the outside of the tube and cable body 6; secondly, the two ends of the pipeline and the tube and cable are fixedly connected, and the pipeline is connected to the external low-temperature pressure test pump, and the low-temperature pressure test pump is used to cool the inside of the tube and cable body 6, and the temperature sensor is further used to obtain data on the lateral traction displacement process of the tube and cable body 6;

[0060] Then, the user installs a triangular support platform on the front side of the slide rail 4 at the bottom of the second clamping platform 2, fixes the traction device on the triangular support platform, connects the traction device to the connecting seat in the middle of the transverse fixing rod 3, and then fixes the pull-wire sensor between the limit block and the active frame 11;

[0061] When the traction equipment performs lateral traction and horizontal bending on the pipe and cable body 6 placed in the middle through the second clamping platform 2, the data of the pipe and cable body 6 is collected through the sensor, and then fed back to the strain gauge through the cable, and then fed back to the computer for data analysis, and relevant data is fed back by calculating the displacement distance, traction strength and combining temperature data.

[0062] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A universal umbilical cable horizontal bending behavior test device, characterized in that: include: A No. 1 clamp (1) and a No. 3 clamp (5) are arranged opposite to each other, and the No. 1 clamp (1) and the No. 3 clamp (5) are arranged on a support platform on the ground so that the relative distance between them can be changed in a first direction; A second clamping platform (2), the second clamping platform (2) is arranged between the first clamp (1) and the third clamp (5), and is movably arranged on a support platform on the ground in a second direction; the second clamping platform (2) and the first clamp (1) and the third clamp (5) are horizontally equidistantly distributed in the first direction; the second clamping platform (2) is drivingly connected to a traction device; and the first direction and the second direction are arranged perpendicularly; The middle part of the duct and cable body (6) is located in the second clamping platform (2), and the two ends of the duct and cable body (6) are respectively located inside the first clamp (1) and the third clamp (5); during testing, the traction device uses the second clamping platform (2) to transversely pull the duct and cable body (6) placed in the middle along the second direction, so that the middle part of the duct and cable body (6) is horizontally bent.

2. The universal umbilical cable horizontal bending behavior testing device according to claim 1, characterized in that: It also includes a data acquisition unit and a data analysis and processing unit; The data acquisition unit comprises a threaded pressure sensor (7) and a threaded temperature sensor (8) arranged at both ends of the tube cable body (6), and a patch temperature sensor arranged outside the tube cable body (6) near the end positions of both ends; During the lateral traction horizontal bending process, data of the cable body (6) is collected by the threaded pressure sensor (7), the threaded temperature sensor (8) and the patch temperature sensor, and then fed back to the strain gauge through the cable, and then fed back to the data analysis processing unit for data analysis, and relevant test data is fed back by calculating the displacement distance, traction strength and combining the temperature data.

3. The universal umbilical cable horizontal bending behavior testing device according to claim 1, characterized in that: The structure of the No. 1 clamp (1) and the No. 3 clamp (5) is the same; the No. 1 clamp (1) comprises: An active frame (11) of L-shaped structure; A vertical rod (13) is fixedly connected to one side of the upper end surface of the active frame (11), wherein the vertical rod (13) and the active frame (11) form a U-shaped structure; A first roller (12) is rotatably connected to a side of the active frame (11) away from the vertical rod (13); A passive frame (18) is slidably arranged at one end of the active frame (11) close to the vertical rod (13), and a second roller (15) is rotatably connected inside the passive frame (18).

4. The universal umbilical cable horizontal bending behavior testing device according to claim 3, characterized in that: The bottoms of the No. 1 roller (12) and the No. 2 roller (15) are spindle-shaped structures.

5. The universal umbilical cable horizontal bending behavior testing device according to claim 4, characterized in that: Bolts (14) are symmetrically threadedly connected to the upper and lower sides of the front and rear end surfaces of the vertical rod (13); a first slide groove (16) is provided on the outer surface of the passive frame (18) at a position corresponding to the bolt (14); the bolt (14) is located inside the first slide groove (16); a second slide groove (17) is provided inside the passive frame (18), and the vertical rod (13) is located inside the second slide groove (17) and can be arranged in a changeable relative position.

6. The universal umbilical cable horizontal bending behavior testing device according to claim 5, characterized in that: The second clamping platform (2) comprises a third clamp and a fourth clamp which are arranged opposite to each other; the third clamp and the fourth clamp have the same structure as the first clamp (1); the third clamp and the fourth clamp are both slidably arranged on the support platform along the second direction; One side end surface of the No. 3 clamp and the No. 4 clamp is fixedly connected with a transverse fixing rod (3), and a connecting seat is fixed in the middle of the transverse fixing rod (3). The connecting seat is connected to the traction device, and the traction device is one of a hydraulic cylinder or a pneumatic cylinder.

7. The universal umbilical cable horizontal bending behavior testing device according to claim 6, characterized in that: A plurality of rotating bearings are arranged at intervals at the lower end of the active frame (11) of the third clamp and the lower end of the active frame (11) of the fourth clamp, and a slide rail (4) is arranged on the support platform along the second direction, and the plurality of rotating bearings are rollingly fitted on the slide rail (4).

8. The universal umbilical cable horizontal bending behavior testing device according to claim 7, characterized in that: Limit blocks are vertically fixed on both sides of the upper end surface of the slide rail (4); a pull-wire displacement sensor (41) is fixedly connected between the active frame (11) in the second clamping platform (2) and the limit blocks; and a patch temperature sensor is fixed on the outside of the cable body (6).

9. The universal umbilical cable horizontal bending behavior testing device according to claim 7, characterized in that: A triangular support platform for supporting and fixing the traction equipment is fixed on one side of the upper end surface of the two slide rails (4).

10. The universal umbilical cable horizontal bending behavior testing device according to claim 1, characterized in that: Both ends of the pipe cable body (6) are connected and fixed with pipelines, and the pipelines are connected to a low temperature pressure test pump.

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