Inspection device for cable protection pipe production

Abstract

The utility model discloses an inspection device for cable protection tube production. The inspection device comprises a high-temperature test box, a support frame, an electric cylinder, a pressing plate, a support table and a pressure sensor. By arranging the movable groove and the clamping plate, a pipeline placed at the top of the pressure sensor can be positioned by moving the clamping plate, and the problem that when pressure detection is carried out on the pipeline, a user needs to rotate an adjusting rod to drive an extrusion plate to move, and then extrusion positioning can be carried out on the pipeline is solved. The outer side of the extrusion plate is not provided with a buffer structure, so that the surface of the pipeline is directly extruded by the extrusion plate to generate physical deformation on the surface of the pipeline, the deformation can change pressure distribution in the pipeline to influence the accuracy of pressure detection, and meanwhile, stress concentration can be generated in a specific area when the pipeline is extruded. Therefore, the problem that the pressure reading of the area is too high or too low and does not represent the real pressure bearing capacity of the whole pipeline is possibly caused.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline inspection equipment, in particular to an inspection device for producing cable protection pipes. Background Art

[0002] Cable protection pipes need to be strictly tested after production before they can be put on sale. Cable protection pipes are a kind of pipes used to protect cables. Sometimes they are erected in the air and sometimes they are laid below the ground surface. They place high demands on their strength and high temperature resistance.

[0003] For example, publication number CN214251849U relates to an inspection device for cable protection tube production, including an inspection box, the inspection box including an upper box body and a lower box body, the upper box body is a pressure detection area, the lower box body is a high temperature detection area, the side wall corresponding to the front of the upper box body extends inward to be provided with a pressure chamber, the top of the pressure chamber is provided with a hydraulic cylinder, the bottom end of the hydraulic cylinder is connected to a hydraulic rod, the bottom end of the hydraulic rod is connected to a pressure plate, the bottom end of the pressure chamber is provided with a pressure sensor, the bottom end of the pressure chamber is provided with a clamp assembly, the clamp assembly is provided with two, and they are symmetrically arranged in the front and rear directions of the upper box body. The design of the pressure chamber and the high temperature chamber in the utility model can well perform pressure tests and high temperature tests on pipelines, and can perform two detection tests at the same time, thereby improving its practicality.

[0004] Based on the search of patent numbers and combined with the deficiencies in the prior art, it is found that:

[0005] Although this inspection device for the production of cable protection tubes can perform pressure tests and high-temperature tests on the tubes very well, when in use, because when performing pressure testing on the tubes, the user needs to rotate the adjustment lever to drive the extrusion plate to move in order to extrude and position the tube, and there is no buffer structure on the outside of the extrusion plate, directly squeezing the surface of the tube through the extrusion plate will cause physical deformation of the tube surface, and this deformation will change the pressure distribution inside the tube, thereby affecting the accuracy of the pressure test. At the same time, squeezing the tube will cause stress concentration in a specific area, which may cause the pressure reading in that area to be too high or too low, which does not represent the actual pressure bearing capacity of the tube as a whole. Utility Model Content

[0006] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide an inspection device for the production of cable protection tubes, which has the advantage of avoiding deformation of the tube caused by excessive extrusion. It solves the problem that when the tube is pressure-tested, the user needs to drive the extrusion plate to move by rotating the adjusting rod so that the tube can be extruded and positioned, and there is no buffer structure on the outside of the extrusion plate. Therefore, directly squeezing the surface of the tube by the extrusion plate will cause physical deformation of the tube surface. This deformation will change the pressure distribution inside the tube, thereby affecting the accuracy of the pressure detection. At the same time, squeezing the tube will cause stress concentration in a specific area, which may cause the pressure reading in the area to be too high or too low, which does not represent the actual pressure bearing capacity of the tube as a whole.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a test device for cable protection tube production, comprising a high-temperature test box, a support frame, an electric cylinder, a pressure plate, a support table and a pressure sensor, the bottom of the support frame is fixedly connected to the top of the support table, the pressure sensor is fixedly installed on the top of the inner wall of the support frame, the top of the pressure plate is fixedly connected to the output end of the electric cylinder, the high-temperature test box is located at the bottom of the support table, the pressure sensor is fixedly installed on the top of the support table, movable grooves are provided on the left and right sides of the top of the support table, a splint is provided inside the movable groove, both sides of the splint are slidably connected to the two sides of the inner wall of the movable groove, the outer side of the bottom of the inner wall of the movable groove is movably connected with a linkage component, and both sides of the splint are fixedly connected with a sliding component.

[0008] As a preferred embodiment of the utility model, the linkage assembly includes an air bag, the outer side of the surface of the air bag is connected to an air nozzle, and the other end of the electric cylinder passes through the support platform and is connected to an air pump through a pipeline.

[0009] As a preferred embodiment of the present invention, the sliding assembly includes a slide plate, and slide grooves are provided on both sides of the inner wall of the movable groove, and the inner wall of the slide groove is slidably connected to the surface of the slide plate.

[0010] As a preferred embodiment of the utility model, a sliding rod is fixedly connected to the inner side of the inner wall of the slide groove, the other end of the sliding rod passes through the skateboard and is fixedly connected to the outer side of the inner wall of the slide groove, the sliding rod is movably connected to the skateboard, and the surface of the sliding rod is movably connected to a spring, and the spring is located on the inner side of the splint.

[0011] As a preferred embodiment of the utility model, a support plate is fixedly connected to the bottom of the support table, the bottom of the support plate is fixedly connected to the top of the high-temperature test box, installation grooves are opened on the left and right sides of the support plate, and the air pump is fixedly installed at the bottom of the inner wall of the installation groove.

[0012] As a preferred embodiment of the utility model, a control box is fixedly installed on the front side of the left side of the inner wall of the support frame, an air outlet is opened on the top of the air pump surface, a sealing plug is threadedly connected to the inner wall of the air outlet, and the electric cylinder, pressure sensor and air pump are electrically connected to the control box through wires.

[0013] As a preferred embodiment of the present invention, the bottoms of both sides of the inner wall of the support frame are fixedly connected with limit plates, and the bottom of the pressure plate and the inner side of the clamping plate are fixedly connected with protective pads.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model provides a movable groove and a clamping plate. The movable groove facilitates the left and right movement of the clamping plate. The pipe placed on the top of the pressure sensor can be positioned by moving the clamping plate, and the user can adjust the position of the clamping plate conveniently. This solves the problem that when the pressure of the pipe is tested, the user needs to drive the extrusion plate to move by rotating the adjustment rod so that the pipe can be squeezed and positioned, and no buffer structure is provided on the outside of the extrusion plate. Therefore, direct squeezing of the surface of the pipe by the extrusion plate will cause physical deformation of the pipe surface. This deformation will change the pressure distribution inside the pipe, thereby affecting the accuracy of the pressure detection. At the same time, squeezing the pipe will cause stress concentration in a specific area, which may cause the pressure reading in the area to be too high or too low, which does not represent the actual pressure bearing capacity of the pipe as a whole. This achieves the effect of avoiding deformation of the pipe caused by excessive squeezing of the pipe.

[0016] 2. The utility model sets a linkage component, and starts the air pump through the control box, so that the gas generated by the air pump can enter the interior of the airbag through the air nozzle and the connecting pipe in sequence. At this time, the volume of the airbag increases due to inflation, thereby driving the clamping plate to move toward the direction close to the pressure sensor to clamp and position the pipe to be inspected on the top of the pressure sensor. The cushioning property of the airbag can prevent the clamping plate from excessively clamping the pipe.

[0017] 3. The utility model sets a sliding component, and the movement of the clamping plate can drive the sliding plate to slide inside the sliding groove. The sliding groove can limit the sliding plate front and back and up and down. The front and back and up and down limits of the sliding plate can limit the clamping plate front and back and up and down, thereby improving the stability of the movement of the clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a three-dimensional exploded cross-sectional structural diagram of the linkage assembly of the utility model;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the three-dimensional structure at A in the middle.

[0021] In the figure: 1. high temperature test box; 2. support frame; 3. electric cylinder; 4. pressure plate; 5. support table; 6. pressure sensor; 7. movable groove; 8. splint; 9. linkage assembly; 91. air bag; 92. air nozzle; 93. air pump; 10. sliding assembly; 101. slide plate; 102. slide groove; 11. slide rod; 12. spring; 13. support plate; 14. installation groove; 15. control box; 16. air outlet; 17. sealing plug; 18. limit plate; 19. protective pad. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 3 As shown, the utility model provides an inspection device for cable protection tube production, including a high-temperature test box 1, a support frame 2, an electric cylinder 3, a pressure plate 4, a support platform 5 and a pressure sensor 6. The bottom of the support frame 2 is fixedly connected to the top of the support platform 5, the pressure sensor 6 is fixedly installed on the top of the inner wall of the support frame 2, the top of the pressure plate 4 is fixedly connected to the output end of the electric cylinder 3, the high-temperature test box 1 is located at the bottom of the support platform 5, the pressure sensor 6 is fixedly installed on the top of the support platform 5, and movable grooves 7 are provided on the left and right sides of the top of the support platform 5. A splint 8 is provided inside the movable groove 7, and both sides of the splint 8 are slidably connected to both sides of the inner wall of the movable groove 7. The outer side of the bottom of the inner wall of the movable groove 7 is movably connected with a linkage component 9, and both sides of the splint 8 are fixedly connected with a sliding component 10.

[0024] refer to Figure 2 The linkage assembly 9 includes an air bag 91, the outer side of the surface of the air bag 91 is connected to an air nozzle 92, and the other end of the electric cylinder 3 passes through the support platform 5 and is connected to an air pump 93 through a pipeline.

[0025] As a technical optimization scheme of the utility model, by setting up the linkage component 9 and starting the air pump 93 through the control box 15, the gas generated by the air pump 93 can enter the interior of the airbag 91 through the air nozzle 92 and the connecting pipe in turn. At this time, the volume of the airbag 91 increases due to the inflation, thereby driving the clamping plate 8 to move toward the direction close to the pressure sensor 6 to clamp and position the pipe to be inspected on the top of the pressure sensor 6. The cushioning property of the airbag 91 can prevent the clamping plate 8 from excessively clamping the pipe.

[0026] refer to Figure 2 The sliding assembly 10 includes a slide plate 101 , and slide grooves 102 are provided on both sides of the inner wall of the movable groove 7 , and the inner wall of the slide groove 102 is slidably connected to the surface of the slide plate 101 .

[0027] As a technical optimization scheme of the utility model, by setting a sliding component 10, the movement of the splint 8 can drive the slide plate 101 to slide inside the slide groove 102, and the slide groove 102 can limit the slide plate 101 front and back and up and down. The front and back and up and down limits of the slide plate 101 can limit the splint 8 front and back and up and down, thereby improving the stability of the movement of the splint 8.

[0028] refer to Figure 3 A slide rod 11 is fixedly connected to the inner side of the inner wall of the slide groove 102, and the other end of the slide rod 11 passes through the slide plate 101 and is fixedly connected to the outer side of the inner wall of the slide groove 102. The slide rod 11 is movably connected to the slide plate 101, and a spring 12 is movably connected to the surface of the slide rod 11, and the spring 12 is located on the inner side of the splint 8.

[0029] As a technical optimization solution of the utility model, by setting a slide rod 11 and a spring 12, the slide rod 11 can limit the spring 12 in the front, back, up and down directions. When the user unscrews the sealing plug 17 from the air outlet 16, the gas inside the airbag 91 is discharged to the outside. At this time, the volume of the airbag 91 becomes smaller, and at the same time, the spring 12 recovers and stretches to push the splint 8 to move away from the pressure sensor 6.

[0030] refer to Figure 1 The bottom of the support platform 5 is fixedly connected with a support plate 13, the bottom of the support plate 13 is fixedly connected with the top of the high temperature test box 1, and mounting grooves 14 are opened on the left and right sides of the support plate 13, and the air pump 93 is fixedly installed at the bottom of the inner wall of the mounting groove 14.

[0031] As a technical optimization solution of the utility model, by providing a support plate 13 and a mounting groove 14 , the support plate 13 can support the support platform 5 and the support frame 2 , and the mounting groove 14 can fix and limit the air pump 93 .

[0032] refer to Figure 1 and Figure 2 A control box 15 is fixedly installed on the front side of the left side of the inner wall of the support frame 2, an air outlet 16 is opened on the top of the surface of the air pump 93, and a sealing plug 17 is threadedly connected to the inner wall of the air outlet 16. The electric cylinder 3, the pressure sensor 6 and the air pump 93 are all electrically connected to the control box 15 through wires.

[0033] As a technical optimization solution of the utility model, by setting the control box 15, the air outlet 16 and the sealing plug 17, the control box 15 is convenient for the user to control the switch of the electric cylinder 3 and the air pump 93. At the same time, the display screen on the surface of the control box 15 is convenient for the user to view the pressure detection value. The sealing plug 17 can prevent the gas from being discharged from the inside of the airbag 91.

[0034] refer to Figure 1 The bottoms of both sides of the inner wall of the support frame 2 are fixedly connected with limit plates 18, and the bottom of the pressing plate 4 and the inner side of the clamping plate 8 are fixedly connected with protective pads 19.

[0035] As a technical optimization solution of the utility model, by setting a limit plate 18 and a protective pad 19, the limit plate 18 can limit the airbag 91, thereby improving the stability of the airbag 91 when inflating, and the protective pad 19 can prevent the pressure plate 4 and the clamping plate 8 from causing friction with the surface of the pipe.

[0036] The working principle and use process of the utility model are as follows: when it is necessary to perform a pressure test on the cable protection tube, the cable protection tube is first placed on the top of the pressure sensor 6, and then the air pump 93 is started through the control box 15 to allow the gas generated by the air pump 93 to pass through the air nozzle 92 and the connecting pipe in turn into the interior of the air bag 91. At this time, the air bag 91 becomes larger in volume due to the inflation, so that the clamping plate 8 can be driven to move in the direction close to the pressure sensor 6 to clamp and position the pipeline to be tested on the top of the pressure block sensor. At this time, the spring 12 contracts, and the cushioning property of the air bag 91 can be used to prevent the clamping plate 8 from hitting the pipeline. An over-clamping situation occurs, and then the electric cylinder 3 is started through the control box 15 so that the output end of the electric cylinder 3 drives the pressure plate 4 to squeeze the cable protection tube. At this time, the pressure detection value can be observed by observing the display screen on the surface of the control box 15. After the detection is completed, the user unscrews the sealing plug 17 from the inside of the air outlet 16 to discharge the gas inside the air bag 91 to the outside. At this time, the volume of the air bag 91 becomes smaller, and at the same time, the spring 12 recovers and stretches to push the clamping plate 8 to move away from the pressure sensor 6, so that the user can take out the cable protection tube from the inside of the pressure plate 4 for the next inspection.

[0037] To sum up: this inspection device for the production of cable protection tubes, by providing a movable groove 7 and a clamping plate 8, the movable groove 7 facilitates the left and right movement of the clamping plate 8, and the pipe placed on the top of the pressure sensor 6 can be positioned by moving the clamping plate 8, and it is convenient for the user to adjust the position of the clamping plate 8, thereby solving the problem that when performing pressure testing on the pipe, the user needs to drive the extrusion plate to move by rotating the adjusting rod in order to extrude and position the pipe, and there is no buffer structure on the outside of the extrusion plate. Therefore, directly squeezing the surface of the pipe by the extrusion plate will cause physical deformation of the pipe surface, and this deformation will change the pressure distribution inside the pipe, thereby affecting the accuracy of the pressure detection. At the same time, squeezing the pipe will cause stress concentration in a specific area, which may cause the pressure reading in the area to be too high or too low, which does not represent the actual pressure bearing capacity of the pipe as a whole.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for cable protection tube production, comprising a high temperature test box (1), a support frame (2), an electric cylinder (3), a pressing plate (4), a supporting platform (5) and a pressure sensor (6), characterized in that: The bottom of the support frame (2) is fixedly connected to the top of the support platform (5), the pressure sensor (6) is fixedly installed on the top of the inner wall of the support frame (2), the top of the pressure plate (4) is fixedly connected to the output end of the electric cylinder (3), the high temperature test box (1) is located at the bottom of the support platform (5), the pressure sensor (6) is fixedly installed on the top of the support platform (5), and the left and right sides of the top of the support platform (5) are provided with movable grooves (7), and a clamping plate (8) is arranged inside the movable groove (7), and the two sides of the clamping plate (8) are slidably connected to the two sides of the inner wall of the movable groove (7), and the outer side of the bottom of the inner wall of the movable groove (7) is movably connected with a linkage component (9), and the two sides of the clamping plate (8) are fixedly connected with sliding components (10).

2. A cable protection tube production inspection device according to claim 1, characterized in that: The linkage assembly (9) comprises an air bag (91), the outer side of the surface of the air bag (91) is connected to an air nozzle (92), and the other end of the electric cylinder (3) passes through the support platform (5) and is connected to an air pump (93) through a pipeline.

3. The inspection device for cable protection tube production according to claim 1, characterized in that: The sliding assembly (10) comprises a slide plate (101), and slide grooves (102) are provided on both sides of the inner wall of the movable groove (7), and the inner wall of the slide groove (102) is slidably connected to the surface of the slide plate (101).

4. A cable protection tube production inspection device according to claim 3, characterized in that: A slide rod (11) is fixedly connected to the inner side of the inner wall of the slide groove (102); the other end of the slide rod (11) passes through the slide plate (101) and is fixedly connected to the outer side of the inner wall of the slide groove (102); the slide rod (11) is movably connected to the slide plate (101); a spring (12) is movably connected to the surface of the slide rod (11); and the spring (12) is located on the inner side of the splint (8).

5. The inspection device for cable protection tube production according to claim 2, characterized in that: The bottom of the support platform (5) is fixedly connected to a support plate (13), the bottom of the support plate (13) is fixedly connected to the top of the high-temperature test box (1), the left and right sides of the support plate (13) are provided with mounting grooves (14), and the air pump (93) is fixedly installed at the bottom of the inner wall of the mounting groove (14).

6. A cable protection tube production inspection device according to claim 2, characterized in that: A control box (15) is fixedly mounted on the front side of the left side of the inner wall of the support frame (2); an air outlet (16) is provided on the top of the surface of the air pump (93); a sealing plug (17) is threadedly connected to the inner wall of the air outlet (16); and the electric cylinder (3), the pressure sensor (6) and the air pump (93) are all electrically connected to the control box (15) via wires.

7. The inspection device for cable protection tube production according to claim 1, characterized in that: The bottoms of both sides of the inner wall of the support frame (2) are fixedly connected to limit plates (18), and the bottom of the pressure plate (4) and the inner side of the clamping plate (8) are fixedly connected to protective pads (19).

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