Cable bridge load and deflection test detection device

Abstract

The utility model discloses a cable bridge load and deflection test detection device which comprises a test bed, a support set used for supporting a bridge sample is arranged on the test bed, a support is arranged on the test bed, a pressure mechanism is arranged on the support, and the pressure mechanism is aligned with the support set in the vertical direction. The support set is composed of a plurality of adjusting modules with the height capable of being adjusted in the vertical direction. The test bench is also provided with a test assembly. The pressure mechanism comprises a pressure sensor set arranged on the support, a connecting plate arranged on the pressure sensor set and a jack set arranged on the connecting plate, the pressure sensor set is fixedly connected to the support, the connecting plate is fixedly connected to the pressure sensor set, and the jack set is fixedly connected to the connecting plate. The cable bridge load and deflection test detection device has the advantages that the phenomenon that in the prior art, due to misoperation or collapse of a bridge and a heavy block, the safety of testers and instruments and equipment is likely to be harmed is improved, and the cable bridge load and deflection test detection device is provided.

Description

Technical Field

[0001] The invention relates to the field of cable bridge test devices, in particular to a cable bridge load and deflection test detection device. Background Art

[0002] As a typical non-structural component of a building, cable trays are often used to lay cables in high and low voltage power transmission and distribution projects in industrial and civil buildings. As a structural system that supports cable lines, the safety of cable trays is related to the normal operation of high and low voltage power transmission and distribution projects, and indirectly affects the quality and safety of this construction project. Therefore, quality inspection and testing of cable trays is particularly important.

[0003] According to relevant standards such as "Cable Tray" QB / T 1453, "Energy-saving and Corrosion-resistant Steel Cable Tray" GB / T 23639, and "Cable Tray for Electric Control and Power Distribution" JB / T 10216, cable trays need to be subjected to load tests. The load test of cable trays requires that the tray specimen be placed horizontally on the support and a uniform load be applied to the tray specimen. Usually, this operation is to manually carry load materials such as steel bars and lead ingots and place them evenly on the tray to achieve the purpose of uniform loading. After loading is completed, the deflection change is measured by reading measuring tools such as vernier height gauges or dial indicators.

[0004] Obviously, the current load-deflection test procedures for cable trays rely on manual operation, the test process is cumbersome and lacks automation, and the safety of the test process is often difficult to guarantee. In addition, the test efficiency is low, and the test results are highly affected by human factors. Therefore, there is an urgent need for an automatic load and deflection test device for cable trays that comprehensively considers factors such as cost, efficiency, and safety, so as to safely and efficiently realize the detection of load-deflection test items for cable trays under the premise of controllable costs. Utility Model Content

[0005] In order to improve the existing phenomenon that improper operation or collapse of the cable tray or weight block may easily cause harm to the safety of testers and instruments and equipment, the present application provides a cable tray load and deflection test detection device.

[0006] The present application provides a cable tray load and deflection test detection device adopts the following technical solution:

[0007] A cable tray load and deflection test detection device, comprising a test bench, the test bench is provided with a support group for supporting a cable tray sample, the test bench is provided with a bracket, the bracket is provided with a pressure mechanism for applying a uniform load to the cable tray sample and recording pressure data, the pressure mechanism is aligned with the support group in a vertical direction, and the support group is composed of a plurality of adjustment modules that can be adjusted in height in the vertical direction;

[0008] The test bench is also provided with a test assembly, which is used to test the deflection value of the bridge specimen, receive the pressure data from the pressure mechanism, and generate a curve diagram of the relationship between the deflection and the uniformly distributed load;

[0009] The pressure mechanism includes a pressure sensor group arranged on the bracket and a connecting plate arranged on the pressure sensor group, and a jack group arranged on the connecting plate. The pressure sensor group is fixedly connected to the bracket, the connecting plate is fixedly connected to the pressure sensor group, and the jack group is fixedly connected to the connecting plate.

[0010] By adopting the above technical solution, during the test, the bridge sample is placed on the first support and the second support so that the bridge sample is horizontally distributed, and the servo controller drives the pressurized oil pump, which is isobarically delivered to each jack through the hydraulic diverter valve and pushes the jack piston to pressurize. Each jack pressure plate of the jack group uniformly applies load to the bridge sample along the length direction of the sample, and the pressure sensor group detects the pressure data at the same time. The computer can ensure the uniform loading of the jack through the pressure data provided by the two pressure sensors of the pressure sensor group and generate a relationship curve with the deflection value transmitted by the digital display dial indicator, so that the tester can intuitively see the relationship between the load and deflection test of the cable bridge, and record accurate test data, so as to realize the load and deflection test of the bridge sample, thereby avoiding the occurrence of detection safety accidents due to bridge quality reasons, and can effectively improve the safety of the load and deflection test of the cable bridge and the accuracy of the test data, and reduce labor and cost.

[0011] Preferably, the bracket includes pillar No. 1, pillar No. 2, pillar No. 3, pillar No. 4 arranged on the test bench and an upper crossbeam arranged between pillar No. 1, pillar No. 2, pillar No. 3, and pillar No. 4, the structures of pillar No. 1, pillar No. 2, pillar No. 3, and pillar No. 4 are consistent and symmetrically arranged at four corners, and pillar No. 1, pillar No. 2, pillar No. 3, and pillar No. 4 are fixed to the test bench by bolts, and the four corners of the upper crossbeam are also fixedly connected to pillar No. 1, pillar No. 2, pillar No. 3, and pillar No. 4 by bolts.

[0012] By adopting the above technical solution, during construction, the No. 1 column and the No. 2 column are fixedly connected to the test bench by bolts, so that the No. 1 column and the No. 2 column are stably installed on the test bench, and the upper crossbeam is fixedly connected to the first column and the second column by bolts, so that the pillar can be quickly built on the test bench.

[0013] Preferably, the support group includes a support No. 1 and a support No. 2 which are arranged opposite to each other, the support No. 1 includes a support rod No. 1, a support rod No. 2, a lifting support, round steel, and a V-shaped steel bar, the structures of the support rod No. 1 and the support rod No. 2 are consistent and are respectively fixed to the test bench by bolts, the support rod No. 1 is provided with holes evenly distributed along the length direction, the lifting support is provided with two left-right symmetrical holes and are connected to the holes of the support rod No. 1 and the support rod No. 2 by pins, the top of the lifting support is provided with round steel, a V-shaped steel bar is placed on the round steel, the V-shaped steel bar has a V-shaped groove and is in contact with the round steel, and the round steel and the V-shaped steel bar can rotate relative to each other.

[0014] By adopting the above technical solution and configuring the support group to be composed of multiple parts, the height of the support group can be adjusted up and down.

[0015] Preferably, the test bench is provided with a No. 1 slide rail and a No. 2 slide rail, the No. 1 slide rail and the No. 2 slide rail are arranged in parallel, the No. 1 support and the No. 2 support both span the No. 1 slide rail and the No. 2 slide rail, a No. 1 slider and a No. 2 slider are arranged on the side of the No. 1 slide rail close to the test bench, the No. 1 slider is slidably matched with the No. 1 slide rail, the No. 2 slider is slidably matched with the No. 2 slide rail, the No. 1 support is provided with a scale for measuring whether the No. 1 support and the test bench are perpendicular, and the No. 1 support and the No. 2 support are fixed to the test bench by bolts.

[0016] By adopting the above technical solution, when building support No. 1, by placing slider No. 1 and slider No. 2 on support No. 1 on slide rail No. 1 and slide rail No. 2 respectively, and by driving support No. 1 to move along the length direction of slide rail No. 1, support No. 1 can be adjusted to a suitable position, and a ruler is used to measure whether support No. 1 is perpendicular to the test bench. When support No. 1 is perpendicular to the test bench, support No. 1 is fixed to the test bench by bolts. Support No. 2 is built in the same way as support No. 1, so that the positions of support No. 1 and support No. 2 can be adjusted by driving support No. 1 and support No. 2 to facilitate adaptation to bridge specimens of different lengths.

[0017] Preferably, the pressure sensor group includes a No. 1 pressure sensor and a No. 2 pressure sensor, and the No. 1 pressure sensor and the No. 2 pressure sensor have the same specifications and sizes. The No. 1 pressure sensor and the No. 2 pressure sensor are symmetrically distributed and are respectively connected to the upper crossbeam and the connecting plate by bolts.

[0018] By adopting the above technical solution, by providing a pressure sensor group consisting of a No. 1 pressure sensor and a No. 2 pressure sensor, it is possible to expand the test area during the detection test, so that bridges of different models and sizes can be tested.

[0019] Preferably, the connecting plate is provided with a No. 1 groove and a No. 2 groove, and the No. 1 groove and the No. 2 groove are arranged in parallel. The jack group includes a plurality of jacks and are respectively connected with jack fixing plates, and the jack fixing plates are fixedly connected to the No. 1 groove and the No. 2 groove by a pair of bolt pairs, and the lower rotating connection pressure plate of each jack piston of the jack group.

[0020] By adopting the above technical solution, each jack can be fixed on the connecting plate, thereby synchronously providing pressure to the pressure sensor.

[0021] Preferably, each jack of the jack group is connected to the hydraulic diverter valve by an oil pipe, and the hydraulic diverter valve is connected to the oil inlet of the pressurized oil pump by an oil pipe.

[0022] By adopting the above technical solution, the jacks can be driven synchronously to provide corresponding pressure evenly.

[0023] Preferably, the test assembly includes a digital dial indicator for measuring the mid-span deflection value of the cable tray specimen, a servo controller for controlling and collecting data of the digital dial indicator, and a computer for receiving the test data from the servo controller to calculate and generate a curve chart of the relationship between deflection and load. The measuring end of the digital dial indicator abuts the specimen on the support group, the digital dial indicator is electrically connected to the servo controller, the pressure sensor group is electrically connected to the servo controller, and the servo controller is electrically connected to the computer.

[0024] By adopting the above technical solution, during the test, the computer generates a relationship curve graph through the pressure data provided by the pressure sensor and the deflection value transmitted by the digital dial indicator, so that the tester can intuitively see the relationship between the cable tray load and deflection test and record accurate test data, so that the load and deflection of the bridge specimen can be tested in one stop.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. During the test, the specimen is placed on the first support and the second support so that the bridge specimen is horizontally distributed. The servo controller drives the pressurized oil pump, which is isobarically delivered to each jack through the hydraulic diverter valve and pushes the jack piston to pressurize. Each jack pressure plate of the jack group applies a load evenly to the bridge specimen along the length direction of the specimen. At the same time, the pressure sensor group detects the pressure data. The computer can ensure the uniform loading of the jack through the pressure data provided by the two pressure sensors of the pressure sensor group and generate a relationship curve with the deflection value transmitted by the digital display dial indicator, so that the tester can intuitively see the relationship between the load and deflection test of the cable bridge and record accurate test data, so as to realize the load and deflection test of the bridge specimen, thereby avoiding the occurrence of detection safety accidents due to bridge quality reasons, and can effectively improve the safety of cable bridge load and deflection tests and the accuracy of test data, and reduce labor and costs;

[0027] 2. By configuring the support assembly to be composed of multiple parts, the height of the support assembly can be adjusted up and down;

[0028] 3. By providing a pressure sensor group consisting of a No. 1 pressure sensor and a No. 2 pressure sensor, the test area can be expanded during the detection test, so that bridges of different models and sizes can be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of this embodiment.

[0030] Figure 2 It is a structural diagram of the pressure mechanism.

[0031] Description of reference numerals:

[0032] 1. Test bench; 11. Slide rail No. 1; 12. Slide rail No. 2; 2. Bracket; 21. Pillar No. 1; 22. Pillar No. 2; 23. Pillar No. 3; 24. Pillar No. 4; 25. Upper crossbeam; 3. Support group; 31. Support No. 1; 311. Support rod No. 1; 312. Support rod No. 2; 313. Lifting support; 314. Round steel; 315. V-shaped steel bar; 32. Support No. 2; 4. Pressure mechanism; 41. Pressure sensor group; 411. Pressure sensor No. 1; 412. Pressure sensor No. 2; 42. Connecting plate; 421. Slot No. 1; 422. Slot No. 2; 43. Jack group; 431. Jack fixing plate; 432. Connecting pressure plate; 44. Hydraulic diverter valve; 45. Pressurized oil pump; 5. Digital dial indicator. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-2 This application is described in further detail.

[0034] The present application embodiment discloses a cable tray load and deflection test detection device. Figure 1 and Figure 2 The cable tray load and deflection test detection device includes a test bench 1, and the test bench 1 includes a support group 3, a bracket 2, a pressure mechanism 4 and a test component.

[0035] The test bench 1 is arranged in a rectangular shape, and the bracket 2 includes a first pillar 21, a second pillar 22, a third pillar 23, and a fourth pillar 24, which are respectively fixed by bolts at the four top corners of the test bench 1. An upper crossbeam 25 is fixed by bolts on the top of the first pillar 21, the second pillar 22, the third pillar 23, and the fourth pillar 24.

[0036] The support group 3 includes a No. 1 support 31 and a No. 2 support 32. The No. 1 support 31 and the No. 2 support 32 have the same structure and are symmetrically arranged on both sides of the length direction of the test bench 1. The No. 1 support 31 includes a No. 1 support rod 311, a No. 2 support rod 312, a lifting support 313, a round steel 314 and a V-shaped steel bar 315. A No. 1 slide rail 11 and a No. 2 slide rail 12 are arranged parallel to each other along the length direction of the test bench 1. A No. 1 slider is fixed to one end of the No. 1 support rod 311, and the No. 1 slider is slidably connected to the No. 1 slide rail 11. A No. 2 slider is fixed to one end of the No. 2 support rod 312, and the No. 2 slider is slidably connected to the No. 2 slide rail 12. The No. 1 support 31 is provided with a scale for measuring whether the No. 1 support 31 is perpendicular to the test bench 1. The No. 1 support 31 and the No. 2 support 32 are fixed to the test bench 1 by bolts. The two ends of the bottom of the lifting base are respectively provided with fixing holes for inserting the No. 1 support rod 311 and the No. 2 support rod 312. A plurality of plug holes are provided at the rod bodies of the No. 1 support rod 311 and the No. 2 support rod 312. Pins are arranged in the plug holes. When the pins are inserted into different plug holes on the No. 1 support rod 311, the height of the lifting support 313 can be adjusted. A round steel 314 is fixed on the top of the lifting support 313. The length direction of the round steel 314 is parallel to the length direction of the lifting device. A V-shaped steel bar 315 is placed on the top of the round steel 314. The V-shaped groove of the V-shaped steel bar 315 is connected to the top of the round steel 314, so that the round steel 314 and the V-shaped bar can rotate relative to each other.

[0037] The pressure mechanism 4 includes a pressure sensor group 41 and a connecting plate 42. The pressure sensor group 41 is fixed on the bracket 2. The connecting plate 42 is fixed on the top of the pressure sensor group 41 and is fixed with a jack group 43 for providing pressure to the pressure sensor.

[0038] The pressure sensor group 41 includes a No. 1 pressure sensor 411 and a No. 2 pressure sensor 412 of the same size and specifications, and the No. 1 pressure sensor 411 and the No. 2 pressure sensor 412 are symmetrically distributed and are respectively connected to the upper cross beam 25 and the connecting plate 42 by bolts. The connecting plate 42 is provided with a No. 1 groove 421 and a No. 2 groove 422 parallel to each other. The jack group 43 includes a plurality of jacks, each of which is connected to a jack fixing plate 431, and the jack fixing plate 431 is fixedly connected to the No. 1 groove 421 and the No. 2 groove 422 by a pair of bolts. The jack pistons of each jack group 43 are rotated under the connecting pressure plate 432.

[0039] The test assembly includes a digital dial gauge 5 for measuring the mid-span deflection value of the cable tray specimen, a servo controller for controlling and collecting data of the digital dial gauge 5, and a computer for receiving the test data of the servo controller to calculate and generate a curve chart of the relationship between deflection and load. The measuring end of the digital dial gauge 5 abuts against the specimen on the support group 3, the digital dial gauge 5 is electrically connected to the servo controller, the pressure sensor group 41 is electrically connected to the servo controller, and the servo controller is electrically connected to the computer.

[0040] The implementation principle of the cable tray load and deflection test detection device of the embodiment of the present application is as follows: during the test, the sample is placed on the first support and the second support so that the cable tray sample is horizontally distributed, and the pressurized oil pump 45 is driven by the servo controller. The oil pump isobarically delivers the hydraulic oil to each jack through the hydraulic diverter valve 44 and pushes the jack piston to pressurize. Each jack pressure plate of the jack group 43 uniformly applies a load to the cable tray sample along the length direction of the sample, and at the same time, the pressure sensor group 41 detects the pressure data. The computer can ensure the uniform loading of the jack through the pressure data provided by the two pressure sensors of the pressure sensor group 41 and generate a relationship curve diagram with the deflection value transmitted by the digital display dial indicator 5, so that the tester can intuitively see the relationship between the cable tray load and deflection test, and record accurate test data, so as to realize the load and deflection test of the cable tray sample, thereby avoiding the occurrence of detection safety accidents due to the quality of the cable tray, and effectively improving the safety of the cable tray load and deflection test and the accuracy of the test data, and reducing labor and cost.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cable tray load and deflection test detection device, comprising a test bench (1), characterized in that: The test bench (1) is provided with a support group (3) for supporting a bridge specimen, the test bench (1) is provided with a bracket (2), the bracket (2) is provided with a pressure mechanism (4) for applying a uniform load to the bridge specimen and recording pressure data, the pressure mechanism (4) is aligned with the support group (3) in a vertical direction, and the support group (3) is composed of a plurality of adjustment modules capable of adjusting the height in a vertical direction; The test bench (1) is also provided with a test assembly, which is used to test the deflection value of the bridge frame specimen and receive pressure data from the pressure mechanism (4) to generate a curve diagram of the relationship between the deflection and the uniformly distributed load; The pressure mechanism (4) comprises a pressure sensor group (41) arranged on a bracket (2), a connecting plate (42) arranged on the pressure sensor group (41), and a jack group (43) arranged on the connecting plate (42); the pressure sensor group (41) is fixedly connected to the bracket (2), the connecting plate (42) is fixedly connected to the pressure sensor group (41), and the jack group (43) is fixedly connected to the connecting plate (42).

2. A cable tray load and deflection test detection device according to claim 1, characterized in that: The support (2) comprises a first pillar (21), a second pillar (22), a third pillar (23), and a fourth pillar (24) arranged on the test bench (1), and an upper crossbeam (25) arranged between the first pillar (21), the second pillar (22), the third pillar (23), and the fourth pillar (24); the structures of the first pillar (21), the second pillar (22), the third pillar (23), and the fourth pillar (24) are consistent and symmetrically arranged at four corners; the first pillar (21), the second pillar (22), the third pillar (23), and the fourth pillar (24) are fixed to the test bench (1) by bolts; and the four corners of the upper crossbeam (25) are also fixedly connected to the first pillar (21), the second pillar (22), the third pillar (23), and the fourth pillar (24) by bolts.

3. A cable tray load and deflection test detection device according to claim 2, characterized in that: The support group (3) comprises a first support (31) and a second support (32) which are arranged opposite to each other, the first support (31) comprises a first support rod (311), a second support rod (312), a lifting support (313), a round steel (314), and a V-shaped steel bar (315), the first support rod (311) and the second support rod (312) have the same structure and are respectively fixed to the test bench (1) by bolts, and the first support rod (311) is uniformly provided with a plurality of holes along the length direction. The lifting support (313) has two holes that are symmetrical to each other and are connected to the holes of the first support rod (311) and the second support rod (312) through a latch. A round steel (314) is arranged on the top of the lifting support (313). A V-shaped steel bar (315) is placed on the round steel (314). The V-shaped steel bar (315) has a V-shaped groove and is in contact with the round steel (314). The round steel (314) and the V-shaped steel bar (315) can rotate relative to each other.

4. A cable tray load and deflection test detection device according to claim 3, characterized in that: The test bench (1) is provided with a first slide rail (11) and a second slide rail (12), the first slide rail (11) and the second slide rail (12) are arranged in parallel, the first support (31) and the second support (32) are both across the first slide rail (11) and the second slide rail (12), a first slider and a second slider are arranged on the side of the first slide rail (11) close to the test bench (1), the first slider is slidably matched with the first slide rail (11), and the second slider is slidably matched with the second slide rail (12), the first support (31) is provided with a scale for measuring whether the first support (31) and the test bench (1) are vertical, and the first support (31) and the second support (32) are fixedly connected to the test bench (1) by bolts.

5. A cable tray load and deflection test detection device according to claim 2, characterized in that: The pressure sensor group (41) comprises a first pressure sensor (411) and a second pressure sensor (412), and the first pressure sensor (411) and the second pressure sensor (412) have the same specifications and sizes. The first pressure sensor (411) and the second pressure sensor (412) are symmetrically distributed and are respectively connected to the upper crossbeam (25) and the connecting plate (42) by bolts.

6. A cable tray load and deflection test detection device according to claim 5, characterized in that: The connecting plate (42) is provided with a first groove (421) and a second groove (422), the first groove (421) and the second groove (422) are arranged in parallel, the jack group (43) includes a plurality of jacks and are respectively connected to jack fixing plates (431), the jack fixing plates (431) are fixedly connected to the first groove (421) and the second groove (422) by a pair of bolt pairs, and the lower rotatable connection pressure plate (432) is provided for each jack piston of the jack group (43).

7. A cable tray load and deflection test detection device according to claim 6, characterized in that: Each jack of the jack group (43) is connected to a hydraulic diverter valve (44) via an oil pipe, and the hydraulic diverter valve (44) is connected to an oil inlet of a pressurized oil pump (45) via an oil pipe.

8. A cable tray load and deflection test detection device according to claim 1, characterized in that: The test assembly comprises a digital dial gauge (5) for measuring the deflection value of the cable tray specimen at the mid-span, a servo controller for controlling and collecting data of the digital dial gauge (5), and a computer for receiving the test data of the servo controller to perform calculations and generate a curve diagram of the relationship between deflection and load. The measuring end of the digital dial gauge (5) abuts against the specimen on the support group (3), the digital dial gauge (5) is electrically connected to the servo controller, the pressure sensor group (41) is electrically connected to the servo controller, and the servo controller is electrically connected to the computer.

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