Low-temperature impact test device for cable protection pipe

Abstract

The invention discloses a low-temperature impact test device for a cable protection tube, and relates to the technical field of low-temperature impact tests.The low-temperature impact test device comprises a low-temperature box, a transportation assembly is arranged in the low-temperature box and comprises a first supporting leg, the first supporting leg is inclined, and a second supporting leg is arranged at the bottom of the first supporting leg; a conveying table is arranged on the side, away from the second supporting leg, of the bottom of the first supporting leg, the second supporting leg is higher than the conveying table, a protection pipe body is arranged at the top of the first supporting leg, a first flow guide plate is arranged on the side, close to the protection pipe body, in the low-temperature box, and the first flow guide plate is inclined. A second flow guide plate is connected to the workbench, a connecting plate is arranged at the top of the workbench, the conveying assembly is arranged, the low-temperature device and the impact test device are combined, detection of multiple samples can be completed at a time, meanwhile, the steps of manual operation are reduced, the test process is optimized, and the test time is effectively shortened.

Description

Technical Field

[0001] The invention relates to the technical field of low-temperature impact testing, in particular to a low-temperature impact testing device for a cable protection tube. Background Art

[0002] The low temperature impact test device is a test equipment specially used to test the impact resistance of electrical accessories such as cable protection tubes under low temperature conditions.

[0003] The existing Chinese patent (Announcement No.: CN220251539U) proposes a low-temperature impact test device, including a bottom plate with a slot inside and a plug-in plate slidably inserted into the slot, a plurality of through slots consistent with the diameter of the placement slot are opened at the thin-wall adaptation position on the top side of the bottom plate, and an internal hollow impact tube is connected at each through slot position adapted to the top of the bottom plate, and a side groove is opened on the thin wall of the impact tube, and a side frame is extended to form the outer peripheral side wall adapted to the side groove position, and a fixed plate is connected to the top and bottom of the side frame, and a slide plate that can close the side groove is slidably inserted in the fixed plate, and a limit assembly is inserted between the two slide plates for transverse sliding.

[0004] The above technical solution completes multiple impact tests at different heights by using impact balls at multiple different longitudinal heights. Compared with the traditional method of replacing impact cylinders at different heights to conduct multiple impact tests at different heights, it greatly reduces the repeated steps in the process, thereby reducing the test time.

[0005] In the existing low temperature impact test device, two devices are usually required, one is a device for freezing the cable protection tube, and the other is a device for performing the low temperature impact test. However, when performing the low temperature impact test, when transferring the cable protection tube from the freezing device to the low temperature impact test device, this operation is required to be completed in a very short period of time (the specified time is 30s). However, the entire operation requires multiple steps such as lifting the hammer, pushing the material, and determining the position of the pipe, which can easily lead to missing the specified test time, and manual operation is troublesome, which will affect the accuracy of the data. Therefore, we proposed a low temperature impact test device for cable protection tubes. Summary of the invention

[0006] The object of the present invention is to provide a low temperature impact test device for a cable protection tube to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A low-temperature impact test device for a cable protection tube, comprising a low-temperature box, a transport component is arranged in the low-temperature box, the transport component comprises a first support leg, the first support leg is at an inclined angle, a second support leg is arranged at the bottom of the first support leg, a transport platform is arranged on the side of the bottom of the first support leg away from the second support leg, the second support leg is higher than the transport platform, a protection tube body is arranged on the top of the first support leg, a first guide plate is arranged on the side of the low-temperature box close to the protection tube body, the first guide plate is at an inclined angle, a plug rod is inserted into the low-temperature box, a workbench is connected to the plug rod, a second guide plate is connected to the workbench, a connecting plate is arranged on the top of the workbench, and a lifting component is arranged on the side of the workbench close to the second guide plate.

[0008] As a preferred embodiment, the lifting assembly includes a screw rod, a second motor is arranged at the bottom of the screw rod, a gear is sleeved on the screw rod, four gears are arranged, the four gears are meshed and connected with each other, a sleeve is threadedly connected to the screw rod, a limit plate is arranged on the sleeve, two limit plates are arranged, and the two limit plates are distributed in a V shape.

[0009] By adopting the above technical solution: by setting a lifting component, the protective tube can be driven to a designated position for testing, and by setting a limit plate, it can be prevented from sliding.

[0010] As a preferred embodiment, a support rod is provided on the top of the connecting plate, a top plate is provided on the top of the support rod, a stamping assembly is provided on the top of the top plate, the stamping assembly includes a fixed seat, a rotating rod is rotatably connected to the fixed seat, a first motor is provided on the rotating rod, a take-up wheel is sleeved on the rotating rod, a wire rope is provided on the take-up wheel, a magnet mounting block is provided at the bottom of the top plate, the bottom of the wire rope is connected to a guide rod, a magnetic attraction plate is provided on the guide rod, and a hammer head is provided at the bottom of the guide rod.

[0011] The above technical solution is adopted: by setting up a stamping assembly, the magnet mounting block is energized, the magnetism disappears, and the magnetic suction plate, guide rod and hammer head move downward under the action of gravity until the first impact is generated on the cable protection tube below.

[0012] As a preferred embodiment, an opening and closing assembly is provided on the side of the low temperature box close to the first guide plate, and the opening and closing assembly includes a slide rail, the slide rail is fixed on the low temperature box, a sliding plate is slidably connected to the slide rail, a handle is provided on the sliding plate, and a discharge port is provided on the side of the low temperature box close to the sliding plate.

[0013] The above technical solution is adopted: by setting an opening and closing component, the low-temperature box is sealed when transportation is not required to prevent external air from entering the low-temperature box.

[0014] As a preferred embodiment, the top of the low temperature box is rotatably connected to a rotating shaft, the rotating shaft is rotatably connected to a cover plate, the cover plate is provided with an insert block, the low temperature box is provided with a clamping block, and the insert block is clamped on the clamping block.

[0015] The above technical solution is adopted: by arranging the cover plate, the plug block and the clamp block, it is convenient to open the low-temperature box and load the materials.

[0016] As a preferred embodiment, a recovery component is provided on the side of the workbench away from the low-temperature box, the recovery component includes a recovery box, a card seat is provided on the recovery box, and a buckle is provided on the side of the workbench close to the card seat, and the buckle is engaged with the card seat.

[0017] The above technical solution is adopted: by setting up a recycling component, the waste protection tubes after detection are recycled.

[0018] As a preferred embodiment, a locking assembly is provided on the top of the connecting plate, and the locking assembly includes a cylinder, a push rod is fixedly connected to the output end of the cylinder, a connecting ring is provided on the top of the connecting plate, a limiting push plate is provided on the top of the connecting ring, the push rod is connected to the limiting push plate, and a spring is connected between the limiting push plate and the connecting ring.

[0019] The above technical solution is adopted: a locking mechanism is provided to prevent the hammer head from bouncing up after the first impact and impacting the protective tube for the second time, thereby affecting the inspection result.

[0020] As a preferred embodiment, two locking assemblies are provided, and the two locking assemblies are respectively located on both sides of the circular groove opened on the top of the connecting plate.

[0021] The above technical solution is adopted: by providing two locking components, the locking work of the protection tube is strengthened.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are: 1. In the present invention, by setting a conveying component, the low temperature device and the impact test device are combined, and the detection of multiple samples can be completed at one time. At the same time, the steps of manual operation are reduced, the test process is optimized, and the test time is effectively shortened. The existing low temperature impact test device usually needs to include two devices, one is a device for freezing the cable protection tube, and the other is a device for performing low temperature impact test. However, when performing the low temperature impact test, when transferring the cable protection tube from the freezing device to the low temperature impact test device, it is required to complete this operation within a very short period of time (the specified time is 30s). However, the entire operation needs to include multiple steps such as lifting the hammer, pushing the material, and determining the position of the pipe fitting, which can easily lead to missing the specified test time, and the manual operation is troublesome, which will affect the accuracy of the data. By setting the stamping component, the magnet mounting block is energized, the magnetism disappears, and the magnetic suction plate, guide rod and hammer head move downward under the action of gravity until the first impact is generated on the cable protection tube below. By setting the lifting component, the protection tube can be driven to enter the specified position for testing, and by setting the limit plate, it can be prevented from slipping.

[0023] 2. In the present invention, by arranging an opening and closing component, the low-temperature box is sealed when transportation is not needed to prevent external air from entering the low-temperature box. By arranging a cover plate, an insert block and a clamp block, the low-temperature box can be opened conveniently for loading. By arranging a recycling component, the waste protection tube after inspection can be recycled. By arranging a locking mechanism, the hammer head is prevented from bouncing up after the first impact and impacting the protection tube for the second time, thereby affecting the inspection result. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a low-temperature impact test device for a cable protection tube.

[0025] Figure 2 This is a structural diagram of a conveying component in a low-temperature impact test device for a cable protection tube.

[0026] Figure 3 This is a structural diagram of the opening and closing components in a low-temperature impact test device for a cable protection tube.

[0027] Figure 4 The figure is a structural diagram of the impact component in a low-temperature impact test device for a cable protection tube.

[0028] Figure 5 This is a disassembled diagram of a low-temperature impact test device for a cable protection tube.

[0029] Figure 6 The figure is a structural diagram of a lifting component in a low-temperature impact test device for a cable protection tube.

[0030] Figure 7 The figure is a structural diagram of a locking assembly in a low-temperature impact test device for a cable protection tube.

[0031] Numbers in the figure: 1. Low temperature box; 2. Protect the tube body; 3. Transport assembly; 31. First support leg; 32. Second support leg; 33. Transport platform; 34. First guide plate; 35. Second guide plate; 36. Workbench; 37. Insertion rod; 4. Opening and closing assembly; 41. Slide rail; 42. Sliding plate; 43. Discharging port; 44. Handle; 5. Stamping assembly; 51. Take-up wheel; 52. Rotating rod; 53. First motor; 54. Fixed seat; 55. Magnet mounting block; 56. Steel wire rope; 57. Magnetic plate; 58. Guide rod; 59. Hammer; 6. Connecting plate; 7. Lifting assembly; 71. Screw; 72. Sleeve; 73. Limiting plate; 74. Gear; 75. Second motor; 8. Locking assembly; 81. Cylinder; 82. Push rod; 83. Connecting ring; 84. Limit push plate; 85. Spring; 9. Recycling components; 91. Recycling box; 92. Card holder; 93. Buckle; 10. Support rod; 11. Top plate; 12. Cover plate; 13. Rotating shaft; 14. Insert block; 15. Clamp block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-Figure 6As shown, a low-temperature impact test device for a cable protection tube comprises a low-temperature box 1, a transport assembly 3 is arranged in the low-temperature box 1, the transport assembly 3 comprises a first support leg 31, the first support leg 31 is at an inclined angle, a second support leg 32 is arranged at the bottom of the first support leg 31, a transport platform 33 is arranged on the side of the bottom of the first support leg 31 away from the second support leg 32, the second support leg 32 is higher than the transport platform 33, a protection tube body 2 is arranged on the top of the first support leg 31, a first guide plate 34 is arranged on the side close to the protection tube body 2 in the low-temperature box 1, the first guide plate 34 is at an inclined angle, a plug rod 37 is inserted into the low-temperature box 1, a workbench 36 is connected to the plug rod 37, a second guide plate 35 is connected to the workbench 36, a connecting plate 6 is arranged on the top of the workbench 36, a lifting assembly 7 is arranged on the side of the workbench 36 close to the second guide plate 35, the lifting assembly 7 comprises a screw rod 71, a second motor 75 is arranged at the bottom of the screw 71, a screw 71 is sleeved with a There are gears 74, four of which are meshed with each other, a sleeve 72 is threadedly connected to the screw 71, a limit plate 73 is provided on the sleeve 72, two limit plates 73 are provided, and the two limit plates 73 are V-shaped, a support rod 10 is provided on the top of the connecting plate 6, a top plate 11 is provided on the top of the support rod 10, a stamping assembly 5 is provided on the top of the top plate 11, and the stamping assembly 5 includes a fixed seat 54, and a rotating rod 5 is rotatably connected to the fixed seat 54 2. A first motor 53 is arranged on the rotating rod 52, a take-up wheel 51 is sleeved on the rotating rod 52, a wire rope 56 is arranged on the take-up wheel 51, a magnet mounting block 55 is arranged at the bottom of the top plate 11, a guide rod 58 is connected to the bottom of the wire rope 56, a magnetic plate 57 is arranged on the guide rod 58, and a hammer 59 is arranged at the bottom of the guide rod 58. By setting the transport component 3, the cable protection tubes to be tested are arranged in sequence on the transport platform 33 in the low temperature zone, and the transport platform 33 has a certain slope. After the samples to be tested are placed, the door of the low temperature zone is closed and the freezing timer starts. After the freezing timer ends, when the sample at the bottom is transferred to the impact test area, the remaining samples will slide down along the transport platform 33 to fill the position, and then fall on the limit plate 73 on the lifting assembly 7 through the first guide plate 34 and the second guide plate 35. The second motor 75 is turned on to drive the screw 71 to rotate, the screw 71 drives the gear 74 to rotate, and the gear 74 drives the four screws 71 to rotate, thereby driving the sleeve 72 and the sample to rise to the specified position for impact testing, and the first motor 53 is turned on to drive the take-up wheel 51 to control the movement of the lower magnet mounting block 55. Before impact, the magnet mounting block 55 needs to be moved downward to a certain position, and then the power here is turned off to restore the magnet mounting block 55. The magnet mounting block 55 will act on the magnetic attraction plate 57 below. The vertical upward movement of the magnetic attraction plate 57 will carry the guide rod 58 and the hammer head 59 together to move vertically upward until the magnetic attraction plate 57 and the magnet mounting block 55 are adsorbed together.The magnet mounting block 55 is energized again, the magnetism disappears, and the magnetic attraction plate 57, the guide rod 58 and the hammer head 59 move downward under the action of gravity until the first impact is made on the cable protection tube below. Furthermore, Figure 3 As shown: the top of the low temperature box 1 is rotatably connected with a rotating shaft 13, the rotating shaft 13 is rotatably connected with a cover plate 12, the cover plate 12 is provided with an insert block 14, the low temperature box 1 is provided with a clamping block 15, and the insert block 14 is clamped on the clamping block 15. By providing the cover plate 12, the insert block 14 and the clamping block 15, it is convenient to open the low temperature box 1 for loading; In the above scheme, after the first impact is completed, a reaction force will be generated between the hammer head 59 and the sample to be tested. Under the action of the reaction force, the hammer head 59 will fall again after bouncing up, thereby causing multiple impacts, affecting the accuracy of the test data, and it should be limited, such as Figure 7 As shown: a locking assembly 8 is arranged on the top of the connecting plate 6, and the locking assembly 8 includes a cylinder 81, and a push rod 82 is fixedly connected to the output end of the cylinder 81. A connecting ring 83 is arranged on the top of the connecting plate 6, and a limit push plate 84 is arranged on the top of the connecting ring 83. The push rod 82 is connected to the limit push plate 84, and a spring 85 is connected between the limit push plate 84 and the connecting ring 83. After the cylinder 81 is started, it will push the push rod 82 and the limit push plate 84 to move inward, so that the hammer head 59 can be stuck on the connecting ring 83. In this process, the spring 85 will press against the outer periphery of the connecting ring 83. In the above solution, there is also a need to limit the position of the protection tube in the waiting area to prevent it from sliding and to ensure that the air inside the low temperature box 1 will not be lost. Figure 3 As shown: an opening and closing assembly 4 is provided on one side of the low temperature box 1 close to the first guide plate 34, the opening and closing assembly 4 includes a slide rail 41, the slide rail 41 is fixed on the low temperature box 1, a slide plate 42 is slidably connected to the slide rail 41, and a handle 44 is provided on the slide plate 42. A discharge port 43 is provided on one side of the low temperature box 1 close to the slide plate 42. By providing the opening and closing assembly 4, when transportation is not required, the low temperature box 1 is sealed to prevent external air from entering the low temperature box 1; Furthermore, Figure 1 As shown: a recovery component 9 is arranged on the side of the workbench 36 away from the low-temperature box 1, and the recovery component 9 includes a recovery box 91. A card holder 92 is arranged on the recovery box 91. A buckle 93 is arranged on the side of the workbench 36 close to the card holder 92. The buckle 93 is snap-connected with the card holder 92. By setting the recovery component 9, the waste protection tube after detection can be recycled.

[0034] Working principle: Figure 1 - Figure 7As shown, by setting the transport component 3, the cable protection tubes to be tested are arranged in sequence on the transport platform 33 in the low temperature zone, and the transport platform 33 has a certain slope. After the samples to be tested are placed, the door of the low temperature zone is closed and the freezing timing is started. After the freezing timing is over, when the sample at the bottom is transferred to the impact test area, the remaining samples will slide down along the transport platform 33 to fill the position, and then fall on the limit plate 73 on the lifting component 7 through the first guide plate 34 and the second guide plate 35 set, and then the screw 71 is driven to rotate by turning on the second motor 75, and the screw 71 drives the gear 74 to rotate, and the gear 74 drives the four screws 71 to rotate, thereby driving the sleeve 72 and the sample to rise to the specified position for impact testing, and the first motor 53 is turned on to drive the take-up wheel 51 to control the movement of the lower magnet mounting block 55. Before impacting, it is first necessary to move the magnet mounting block 55 downward to a certain position, and then turn off the power here to restore the magnet mounting block 55. The magnet mounting block 55 will act on the magnetic suction plate 57 below. The vertical upward movement of the magnetic plate 57 will bring the guide rod 58 and the hammer head 59 to move vertically upward together until the magnetic plate 57 is adsorbed together with the magnet mounting block 55. The magnet mounting block 55 is powered on again, the magnetism disappears, and the magnetic plate 57, the guide rod 58 and the hammer head 59 move downward under the action of gravity until the first impact is made on the cable protection tube below. By setting the cover plate 12, the plug block 14 and the clamping block 15, it is convenient to open the low temperature box 1 for loading. After the cylinder 81 is started, the push rod 82 and the limit push plate 84 will be pushed inward, and the hammer head 59 can be clamped on the connecting ring 83. In this process, the spring 85 will be against the outer periphery of the connecting ring 83. By setting the opening and closing component 4, when transportation is not required, the low temperature box 1 is sealed to prevent external air from entering the low temperature box 1. By setting the recycling component 9, the waste protection tube after detection is recycled.

[0035] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A low temperature impact test device for a cable protection tube, comprising a low temperature box (1), characterized in that: The low temperature box (1) is provided with a transport assembly (3), the transport assembly (3) comprising a first support leg (31), the first support leg (31) being at an inclined angle, a second support leg (32) being provided at the bottom of the first support leg (31), a transport platform (33) being provided at a side of the bottom of the first support leg (31) away from the second support leg (32), the second support leg (32) being higher than the transport platform (33), a protection tube body (2) being provided at the top of the first support leg (31), a first guide plate (34) being provided at a side of the low temperature box (1) close to the protection tube body (2), the first guide plate (34) being at an inclined angle, an insertion rod (37) being inserted into the low temperature box (1), a workbench (36) being connected to the insertion rod (37), a second guide plate (35) being connected to the workbench (36), a connecting plate (6) being provided at the top of the workbench (36), and a lifting assembly (7) being provided at a side of the workbench (36) close to the second guide plate (35).

2. A cable protection tube low temperature impact test device according to claim 1, characterized in that: The lifting assembly (7) comprises a screw rod (71), a second motor (75) is arranged at the bottom of the screw rod (71), a gear (74) is sleeved on the screw rod (71), four gears (74) are arranged, and the four gears (74) are meshed and connected with each other, a sleeve (72) is threadedly connected to the screw rod (71), a limit plate (73) is arranged on the sleeve (72), two limit plates (73) are arranged, and the two limit plates (73) are distributed in a V shape.

3. A cable protection tube low temperature impact test device according to claim 1, characterized in that: A support rod (10) is arranged on the top of the connecting plate (6), a top plate (11) is arranged on the top of the support rod (10), a punching assembly (5) is arranged on the top of the top plate (11), the punching assembly (5) comprises a fixed seat (54), a rotating rod (52) is rotatably connected to the fixed seat (54), a first motor (53) is arranged on the rotating rod (52), a take-up wheel (51) is sleeved on the rotating rod (52), a steel wire rope (56) is arranged on the take-up wheel (51), a magnet mounting block (55) is arranged on the bottom of the top plate (11), a guide rod (58) is connected to the bottom of the steel wire rope (56), a magnetic attraction plate (57) is arranged on the guide rod (58), and a hammer head (59) is arranged on the bottom of the guide rod (58).

4. A cable protection tube low temperature impact test device according to claim 1, characterized in that: An opening and closing assembly (4) is provided on a side of the low-temperature box (1) close to the first guide plate (34), the opening and closing assembly (4) comprising a slide rail (41), the slide rail (41) being fixed on the low-temperature box (1), a slide plate (42) being slidably connected to the slide rail (41), a handle (44) being provided on the slide plate (42), and a discharge port (43) being provided on a side of the low-temperature box (1) close to the slide plate (42).

5. A cable protection tube low temperature impact test device according to claim 1, characterized in that: The top of the low-temperature box (1) is rotatably connected to a rotating shaft (13), the rotating shaft (13) is rotatably connected to a cover plate (12), an insert block (14) is provided on the cover plate (12), a clamping block (15) is provided on the low-temperature box (1), and the insert block (14) is clamped on the clamping block (15).

6. A cable protection tube low temperature impact test device according to claim 1, characterized in that: A recovery component (9) is provided on a side of the workbench (36) away from the low-temperature box (1), the recovery component (9) comprising a recovery box (91), a holder (92) being provided on the recovery box (91), and a buckle (93) is provided on a side of the workbench (36) close to the holder (92), the buckle (93) being engaged with the holder (92).

7. A cable protection tube low temperature impact test device according to claim 1, characterized in that: A locking assembly (8) is arranged on the top of the connecting plate (6), the locking assembly (8) comprising a cylinder (81), the output end of the cylinder (81) being fixedly connected to a push rod (82), a connecting ring (83) being arranged on the top of the connecting plate (6), a limit push plate (84) being arranged on the top of the connecting ring (83), the push rod (82) being connected to the limit push plate (84), and a spring (85) being connected between the limit push plate (84) and the connecting ring (83).

8. A cable protection tube low temperature impact test device according to claim 7, characterized in that: Two locking assemblies (8) are provided, and the two locking assemblies (8) are respectively located on both sides of a circular groove opened on the top of the connecting plate (6).

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