A cable torsion test equipment

Abstract

A cable torsion test device, a working chamber; a cable pay-off device, arranged on the working chamber, configured to pay-off the cable to be tested; a torsion test device, arranged below the cable pay-off device, configured to perform a torsion test after clamping the cable to be tested; a tension adjustment device, arranged between the cable pay-off device and the torsion test device, used to adjust the tension state of the cable to be tested; a cable cutting device, arranged below the torsion test device, configured to separate the tested cable from the cable on the cable pay-off device; a cable segment recovery device, arranged below the torsion test device, configured to recover the tested cables under different test conditions respectively. In this way, the cable can be efficiently subjected to torsion tests under different variables to obtain more comprehensive and convincing cable performance data.

Description

Technical Field

[0001] The invention relates to the technical field of cable production, and in particular to a cable torsion testing device. Background Art

[0002] Cables are conductive wire bundles composed of one or more insulated conductors. Before various types of cables are put on the market, they are generally tested for environmental tolerance and mechanical properties, such as torsion resistance tests.

[0003] In the related art, a clamping mechanism such as a mechanical chuck is usually used to perform a torsion test on a section of cable. After the test, the cable sample surface is inspected for cracks, deformation or other adverse conditions, and a functional test is performed to determine whether the electrical parameters of the cable are affected. This test method only performs a single torsion test on the cable, and does not perform a torsion control test on the cable (for example, cable length, control of torsion force, torsion degree, tension degree and other variables). It is impossible to obtain more comprehensive and convincing cable performance data. At the same time, the cable segment needs to be cut in advance and repeatedly installed and removed, which reduces the detection efficiency. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the above-mentioned technology at least to some extent.

[0005] To this end, the purpose of the present invention is to provide a cable torsion test device that can efficiently perform torsion tests on cables under different variables to obtain more comprehensive and convincing cable performance data.

[0006] To achieve the above-mentioned purpose, the present invention proposes a cable torsion testing equipment, comprising: a working chamber; a cable pay-out device, arranged on the working chamber and configured to pay out the cable to be tested; a torsion testing device, arranged below the cable pay-out device and configured to perform a torsion test after clamping the cable to be tested; a tension adjustment device, arranged between the cable pay-out device and the torsion testing device, and used to adjust the tension state of the cable to be tested; a cable cutting device, arranged below the torsion testing device and configured to separate the tested cable from the cable on the cable pay-out device; a cable segment recovery device, arranged below the torsion testing device and configured to recover the tested cables under different test conditions respectively.

[0007] In one embodiment of the present invention, the torsion testing device includes: a rotating tube, a driven wheel, a first motor, a driving wheel and two clamping members, wherein the rotating tube is arranged on the working bin through a bearing and is connected to the working bin, the driven wheel is arranged on the rotating tube, the first motor is arranged on the working bin, the driving wheel is arranged on the first motor, the driving wheel and the driven wheel are meshed with each other, and the two clamping members are symmetrically arranged in the rotating tube.

[0008] In one embodiment of the present invention, the clamping member includes: an electric telescopic rod and a first clamping plate, wherein the electric telescopic rod is arranged in the rotating tube, the first clamping plate is arranged at the driving end of the electric telescopic rod, and the first clamping plate is in contact with the cable.

[0009] In one embodiment of the present invention, the cable pay-off device comprises: a second motor and a pay-off shaft, wherein the second motor is arranged on the working chamber, the pay-off shaft is arranged at the driving end of the second motor, and the cable is wound around the pay-off shaft.

[0010] In one embodiment of the present invention, the tension adjustment device includes: a first vertical driving device and a first cable clamp, wherein the first vertical driving device is arranged on the working chamber, and the first vertical driving device is provided with the first cable clamp for driving the first cable clamp to move vertically.

[0011] In one embodiment of the present invention, the first cable clamp includes: a warehouse body, a third motor, a first bevel gear, two ball screw driving members and two second clamping plates, wherein the warehouse body is arranged on the first vertical driving device, the third motor is arranged in the warehouse body, the first bevel gear is arranged at the driving end of the third motor, the two ball screw driving members are symmetrically arranged in the warehouse body and are respectively connected to the first bevel gears, and the two second clamping plates are respectively arranged on the two ball screw driving members.

[0012] In one embodiment of the present invention, the ball screw drive comprises: a first ball screw, a first ball slider, a connecting plate and a second bevel gear, wherein the first ball screw is rotatably arranged in the warehouse body, the first ball slider is arranged on the first ball screw, the first ball slider is connected to the second clamping plate through a connecting plate, and the second bevel gear is arranged on the first ball screw and meshes with the first bevel gear.

[0013] In one embodiment of the present invention, the first vertical drive device includes: a drive bin, a fourth motor, a second ball screw, a second ball slider and a connecting piece, wherein the drive bin is arranged on the working bin, the fourth motor is arranged on the drive bin, the second ball screw is arranged on the driving end of the fourth motor, the second ball slider is arranged on the second ball screw, and the second ball slider is connected to the first cable clamp through the connecting piece.

[0014] In one embodiment of the present invention, the cable cutting device comprises: a hydraulic telescopic device and a cutter, wherein the hydraulic telescopic device is arranged on the working chamber, and the cutter is arranged at the driving end of the hydraulic telescopic device.

[0015] In one embodiment of the present invention, the cable segment recovery device comprises: a moving plate, a second vertical drive device, a second cable clamp, a fifth motor, a bevel gear set, a rotating shaft, a mounting plate and a plurality of storage bins, wherein the second vertical drive device is arranged in the working bin, the second cable clamp is arranged on the second vertical drive device, the moving plate is placed in the working bin, the mounting plate is rotatably connected with the moving plate through a rotating shaft, the fifth motor is arranged in the working bin, the fifth motor is connected with the rotating shaft through the bevel gear set, and a plurality of storage bins are arranged on the mounting plate at equal intervals around the central axis of the rotating shaft; a sliding groove is provided on the side wall of the storage bin, the second cable clamp is slidably connected with the sliding groove, a display screen is arranged on the upper part of the storage bin, and a pressure sensor is arranged on the inner wall of the lower part of the storage bin. .

[0016] Beneficial effects of the present invention: The tension adjustment device can keep the cable in proper tension during torsion and can change the length of the cable section to be tested, so as to facilitate torsion control testing of the cable (for example, cable length, control of torsion force, degree of torsion, degree of tension and other variables) to obtain more comprehensive and convincing cable performance data.

[0017] The cable segment recovery device automatically and independently stores the cable segments cut by the cable cutting device. The test can be automatically and continuously run without the need to pre-cut the cable segments before the test, nor the need to repeatedly install and remove the cable segments, thereby improving the detection efficiency.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which: Figure 1 A schematic structural diagram of a cable torsion test device according to an embodiment of the present invention; Figure 2 A schematic cross-sectional view of a cable torsion test device according to an embodiment of the present invention; Figure 3 A schematic diagram of the top view of a cable segment recovery device according to an embodiment of the present invention; Figure 4 FIG. 4 is a schematic cross-sectional structural diagram of a first cable clamp according to an embodiment of the present invention.

[0020] As shown in the figure: 1. working chamber, 2. cable pay-off device, 21. second motor, 22. pay-off shaft, 3. torsion test device, 31. rotating tube, 32. driven wheel, 33. first motor, 34. driving wheel, 35. clamping member, 351. electric telescopic rod, 352. first clamping plate, 4. tension adjustment device, 41. first vertical drive device, 411. drive chamber, 412. fourth motor, 413. second ball screw, 414. second ball slider, 415. connecting member, 42. first cable clamp, 421. chamber body, 422. third motor, 4 23. first bevel gear, 424. ball screw drive, 4241. first ball screw, 4242. first ball slider, 4243. connecting plate, 4244. second bevel gear, 425. second clamping plate, 5. cable cutting device, 51. hydraulic telescopic device, 52. cutting machine, 6. cable segment recovery device, 61. moving plate, 62. second vertical drive device, 63. second cable clamp, 64. fifth motor, 65. bevel gear set, 66. rotating shaft, 67. mounting plate, 68. storage bin, 7. slide slot, 8. display screen, 9. pressure sensor. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0022] A cable torsion test device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, the cable torsion testing equipment according to an embodiment of the present invention may include: a working chamber 1, a cable unwinding device 2, a tension adjusting device 4, a cable cutting device 5 and a cable segment recovery device 6.

[0024] The cable pay-off device 2 is arranged on the working chamber 1, and the cable pay-off device 2 is configured to pay-off the cable to be tested. The torsion test device 3 is arranged below the cable pay-off device 2, and the torsion test device 3 is configured to perform a torsion test after clamping the cable to be tested. The tension adjustment device 4 is arranged between the cable pay-off device 2 and the torsion test device 3, and the tension adjustment device 4 is used to adjust the tension state of the cable to be tested. The cable cutting device 5 is arranged below the torsion test device 3, and the cable cutting device 5 is configured to separate the tested cable from the cable on the cable pay-off device 2. The cable segment recovery device 6 is arranged below the torsion test device 3, and the cable segment recovery device 6 is configured to recover the tested cables under different test conditions respectively.

[0025] It can be understood that the tension adjustment device 4 described in this embodiment can subject the cable to be tested to torsion tests under different tension conditions.

[0026] In order to clearly explain the above embodiment, in one embodiment of the present invention, as Figure 2 As shown, the torsion testing device 3 may include: a rotating tube 31, a driven wheel 32, a first motor 33, a driving wheel 34 and two clamping members 35, wherein the rotating tube 31 is arranged on the working bin 1 through a bearing, and the rotating tube 31 is connected to the working bin 1, the driven wheel 32 is arranged on the rotating tube 31, the first motor 33 is arranged on the working bin 1, the driving wheel 34 is arranged on the first motor 33, the driving wheel 34 and the driven wheel 32 are meshed with each other, and the two clamping members 35 are symmetrically arranged in the rotating tube 31.

[0027] It can be understood that the first motor 33 described in this embodiment drives the driven wheel 32 to rotate through the driving wheel 34, and the driven wheel 32 drives the rotating tube 31 to rotate on the working chamber 1 to apply a torsional force to the cable through the clamping member 35.

[0028] The clamping member 35 may include: an electric telescopic rod 351 and a first clamping plate 352, wherein the electric telescopic rod 351 is disposed in the rotating tube 31, the first clamping plate 352 is disposed at the driving end of the electric telescopic rod 351, and the first clamping plate 352 is in contact with the cable. It should be noted that the contact surface between the first clamping plate 352 and the cable is provided with anti-slip grooves.

[0029] In one embodiment of the present invention, Figure 2 As shown, the cable pay-off device 2 may include: a second motor 21 and a pay-off shaft 22, wherein the second motor 21 is arranged on the working chamber 1, the pay-off shaft 22 is arranged at the driving end of the second motor 21, and the pay-off shaft 22 is wound with a cable.

[0030] It can be understood that the second motor 21 described in this embodiment can drive the pay-off shaft 22 to rotate to reel in or pay out the cable.

[0031] In one embodiment of the present invention, Figure 2 As shown, the tension adjustment device 4 includes: a first vertical driving device 41 and a first cable clamp 42, wherein the first vertical driving device 41 is arranged on the working chamber 1, and the first vertical driving device 41 is provided with the first cable clamp 42 for driving the first cable clamp 42 to move vertically.

[0032] Furthermore, if Figure 4 As shown, the first cable clamp 42 may include: a warehouse body 421, a third motor 422, a first bevel gear 423, two ball screw driving members 424 and two second clamping plates 425, wherein the warehouse body 421 is arranged on the first vertical driving device 41, the third motor 422 is arranged in the warehouse body 421, the first bevel gear 423 is arranged at the driving end of the third motor 422, the two ball screw driving members 424 are symmetrically arranged in the warehouse body 421, and the two ball screw driving members 424 are respectively connected to the first bevel gear 423, and the two second clamping plates 425 are respectively arranged on the two ball screw driving members 424. The ball screw drive 424 may include: a first ball screw 4241, a first ball slider 4242, a connecting plate 4243 and a second bevel gear 4244, wherein the first ball screw 4241 is rotatably arranged in the warehouse body 421, the first ball slider 4242 is arranged on the first ball screw 4241, the first ball slider 4242 is connected to the second clamping plate 425 through the connecting plate 4243, the second bevel gear 4244 is arranged on the first ball screw 4241, and the second bevel gear 4244 and the first bevel gear 423 are meshed with each other.

[0033] It can be understood that the third motor 422 described in this embodiment can drive the first bevel gear 423 to rotate, and provide driving force for the two ball screw drivers 424 through the first bevel gear 423. The two ball screw drivers 424 can drive the two second clamping plates 425 to clamp or release the cable.

[0034] Specifically, the relevant personnel can install the pay-off shaft 22 wound with the cable on the driving end of the second motor 21, and fix one end of the cable on the two first clamping plates 352. When the torsion test begins, the second motor 21 can pay out the cable of appropriate length by rotating the pay-off shaft 22. The third motor 422 drives the first bevel gear 423 to rotate, and the first bevel gear 423 drives the two second bevel gears 4244 to rotate at the same time. The second bevel gear 4244 can drive the first ball screw 4241 to rotate, and the first ball slider 4242 can move on the rotating first ball screw 4241. The two first ball sliders 4242 respectively drive the corresponding second clamping plates 425 to clamp the cable. The first vertical drive device 41 adjusts the vertical position of the two second clamping plates 425 to keep the cable in appropriate tension during the torsion process. The torsion test device 3 can perform a torsion test on the cable.

[0035] After the test is finished, the torsion test device 3 controls the first clamping plate 352 to separate from the cable, and after the cable segment recovery device 6 pulls the tested cable to move to the bottom of the torsion test device 3, the torsion test device 3 re-clamps the tested cable before the cable cutting device 5 cuts it, and finally the tested cable is separated from the cable on the pay-off shaft 22 by the cable cutting device 5, completing the recovery of the tested cable. Repeating the above operation, the cable can be tested continuously under different variables.

[0036] It should be noted that the different positions of the two second clamping plates 425 on the tension adjustment device 4 can adjust the tension of the cable to be tested and change the length of the cable to be tested. By cooperating with the torsion test device 3, the length of the cable, the torsion force, torsion degree, tension degree and other variables can be adjusted separately to obtain more comprehensive and convincing cable performance data.

[0037] In one embodiment of the present invention, Figure 2 As shown, the first vertical drive device 41 may include: a drive bin 411, a fourth motor 412, a second ball screw 413, a second ball slider 414 and a connecting piece 415, wherein the drive bin 411 is arranged on the working bin 1, the fourth motor 412 is arranged on the drive bin 411, the second ball screw 413 is arranged on the driving end of the fourth motor 412, the second ball slider 414 is arranged on the second ball screw 413, and the second ball slider 414 is connected to the first cable clamp 42 through the connecting piece 415.

[0038] It can be understood that the fourth motor 412 described in this embodiment can drive the second ball screw 413 to rotate, the second ball slider 414 can move on the rotating second ball screw 413, and the second ball slider 414 can drive the first cable clamp 42 to move vertically through the connecting member 415.

[0039] In one embodiment of the present invention, Figure 2 and Figure 3 As shown, the cable cutting device 5 may include: a hydraulic telescopic device 51 and a cutter 52 , the hydraulic telescopic device 51 is arranged on the working chamber 1 , and the cutter 52 is arranged at the driving end of the hydraulic telescopic device 51 .

[0040] The cable segment recovery device 6 may include: a moving plate 61, a second vertical drive device 62, a second cable clamp 63, a fifth motor 64, a bevel gear set 65, a rotating shaft 66, a mounting plate 67 and a plurality of storage bins 68, wherein the second vertical drive device 62 is arranged in the working bin 1, the second cable clamp 63 is arranged on the second vertical drive device 62, the moving plate 61 is placed in the working bin 1, the mounting plate 67 is rotatably connected to the moving plate 61 through the rotating shaft 66, the fifth motor 64 is arranged in the working bin 1, the fifth motor 64 is connected to the rotating shaft 66 through the bevel gear set 65, and a plurality of storage bins 68 are arranged on the mounting plate 67 at equal intervals around the central axis of the rotating shaft 66. A slide groove 7 is provided on the side wall of the storage bin 68, the second cable clamp 63 is slidably connected to the slide groove 7, a display screen 8 is arranged on the upper part of the storage bin 68, and a pressure sensor 9 is arranged on the inner wall of the lower part of the storage bin 68.

[0041] It should be noted that the second vertical driving device 62 described in this embodiment has the same structure as the first vertical driving device 41 , and the second cable clamp 63 has the same structure as the first cable clamp 42 .

[0042] Specifically, the second cable clamp 63 can clamp the cable, and the second vertical drive device 62 can drive the second cable clamp 63 to move vertically. Through the sliding connection between the second cable clamp 63 and the slide slot 7, the measured cable can be pulled into the corresponding storage bin 68. When the storage bin 68 needs to be switched, the fifth motor 64 can drive the rotating shaft 66 to rotate through the bevel gear set 65 (for example, two mutually meshing bevel gears), and the rotating shaft 66 can adjust the working position of each storage bin 68 by driving the mounting plate 67 to rotate. The pressure sensor 9 can sense the cable segment cut by the cutting machine 52, and display the falling time and test conditions through the display screen 8.

[0043] It should be noted that this application is electrically connected to the control console, and relevant staff can send preset instructions to the control console to automatically carry out the test.

[0044] Furthermore, the movable plate 61 can be an L-shaped plate body, which is slidably connected to the working bin 1. An electric push rod is provided on the working bin 1, and the driving end of the electric push rod is connected to the working bin 1. The electric push rod can push the movable plate 61 out of the working bin 1 to facilitate the recovery of the cable segment.

[0045] It should be noted that the motors described in the above embodiments (for example, the first motor 33, the second motor 21, the third motor 422, the fourth motor 412, the fifth motor 64, etc.) are equipped with brakes, which can be used to quickly stop the motors. A reduction gearbox is provided on the driving end of the motor, and the driving end of the motor is connected to the input end of the reduction gearbox. The output end of the reduction gearbox constitutes the driving end of the motor, and the speed of the motor output is adjusted by the reduction gearbox.

[0046] In summary, the cable torsion testing equipment of the embodiment of the present invention can efficiently perform torsion tests on cables under different variables to obtain more comprehensive and convincing cable performance data.

[0047] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0049] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A cable torsion test device, characterized in that: include: Workstation (1); A cable pay-off device (2), arranged on the working chamber (1), configured to pay-off the cable to be tested; A torsion test device (3), arranged below the cable pay-off device (2), configured to perform a torsion test on the cable to be tested after clamping it; A tension adjustment device (4), arranged between the cable pay-off device (2) and the torsion test device (3), and used for adjusting the tension state of the cable to be tested; A cable cutting device (5), arranged below the torsion testing device (3), configured to separate the tested cable from the cable on the cable pay-off device (2); A cable segment recovery device (6), the cable segment recovery device (6) comprising: a moving plate (61), a second vertical drive device (62), a second cable clamp (63), a fifth motor (64), a bevel gear set (65), a rotating shaft (66), a mounting plate (67) and a plurality of storage bins (68), wherein: The second vertical drive device (62) is arranged in the working bin (1), the second cable clamp (63) is arranged on the second vertical drive device (62), the movable plate (61) is placed in the working bin (1), the mounting plate (67) is rotatably connected to the movable plate (61) via a rotating shaft (66), the fifth motor (64) is arranged in the working bin (1), the fifth motor (64) is connected to the rotating shaft (66) via the bevel gear set (65), and a plurality of storage bins (68) are arranged on the mounting plate (67) at equal intervals around the central axis of the rotating shaft (66).

2. The cable torsion test equipment according to claim 1, characterized in that: The torsion testing device (3) comprises: a rotating tube (31), a driven wheel (32), a first motor (33), a driving wheel (34), and two clamping members (35), wherein the rotating tube (31) is arranged on the working bin (1) via a bearing and is connected to the working bin (1), the driven wheel (32) is arranged on the rotating tube (31), the first motor (33) is arranged on the working bin (1), the driving wheel (34) is arranged on the first motor (33), the driving wheel (34) and the driven wheel (32) are meshed with each other, and the two clamping members (35) are symmetrically arranged in the rotating tube (31).

3. The cable torsion test equipment according to claim 2, characterized in that: The clamping member (35) comprises: an electric telescopic rod (351) and a first clamping plate (352), wherein the electric telescopic rod (351) is arranged in the rotating tube (31), the first clamping plate (352) is arranged at the driving end of the electric telescopic rod (351), and the first clamping plate (352) is in contact connection with the cable.

4. The cable torsion test equipment according to claim 1, characterized in that: The cable pay-off device (2) comprises: a second motor (21) and a pay-off shaft (22), wherein the second motor (21) is arranged on the working chamber (1), the pay-off shaft (22) is arranged at the driving end of the second motor (21), and a cable is wound around the pay-off shaft (22).

5. The cable torsion test equipment according to claim 1, characterized in that: The tension adjustment device (4) comprises: a first vertical drive device (41) and a first cable clamp (42), wherein the first vertical drive device (41) is arranged on the working chamber (1), and the first cable clamp (42) is arranged on the first vertical drive device (41) for driving the first cable clamp (42) to move vertically.

6. The cable torsion test equipment according to claim 5, characterized in that: The first cable clamp (42) comprises: a warehouse body (421), a third motor (422), a first bevel gear (423), two ball screw driving members (424) and two second clamping plates (425), wherein the warehouse body (421) is arranged on the first vertical driving device (41), the third motor (422) is arranged in the warehouse body (421), the first bevel gear (423) is arranged at the driving end of the third motor (422), the two ball screw driving members (424) are symmetrically arranged in the warehouse body (421) and are respectively connected to the first bevel gear (423), and the two second clamping plates (425) are respectively arranged on the two ball screw driving members (424).

7. The cable torsion test equipment according to claim 6, characterized in that: The ball screw driving component (424) comprises: a first ball screw (4241), a first ball slider (4242), a connecting plate (4243) and a second bevel gear (4244), wherein the first ball screw (4241) is rotatably arranged in the warehouse body (421), the first ball slider (4242) is arranged on the first ball screw (4241), the first ball slider (4242) is connected to the second clamping plate (425) via the connecting plate (4243), and the second bevel gear (4244) is arranged on the first ball screw (4241) and meshes with the first bevel gear (423).

8. The cable torsion test equipment according to claim 7, characterized in that: The first vertical drive device (41) comprises: a drive bin (411), a fourth motor (412), a second ball screw (413), a second ball slider (414) and a connecting piece (415), wherein the drive bin (411) is arranged on the working bin (1), the fourth motor (412) is arranged on the drive bin (411), the second ball screw (413) is arranged on the driving end of the fourth motor (412), the second ball slider (414) is arranged on the second ball screw (413), and the second ball slider (414) is connected to the first cable clamp (42) via the connecting piece (415).

9. The cable torsion test equipment according to claim 1, characterized in that: The cable cutting device (5) comprises: a hydraulic telescopic device (51) and a cutting machine (52), wherein the hydraulic telescopic device (51) is arranged on the working compartment (1), and the cutting machine (52) is arranged at the driving end of the hydraulic telescopic device (51).

10. The cable torsion test equipment according to claim 1, characterized in that: A slide groove (7) is provided on a side wall of the storage bin (68), the second cable clamp (63) is slidably connected to the slide groove (7), a display screen (8) is provided on the upper portion of the storage bin (68), and a pressure sensor (9) is provided on the lower inner wall of the storage bin (68).

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