A cable testing device

Abstract

The present invention belongs to the technical field of cable detection, and discloses a cable testing device, which mainly includes a fixed seat, a plurality of clamping mechanisms, a driving mechanism and a conversion mechanism; a plurality of clamping mechanisms are arranged on the fixed seat, the clamping mechanisms are configured to clamp the wire to be tested, and each clamping mechanism includes a fixed contact conductively connected to the wire to be tested; the driving mechanism is driven and connected to the clamping mechanism, and the driving mechanism is configured to drive the clamping mechanism to clamp the wire to be tested; the conversion mechanism includes a rotating disk rotatably arranged on the fixed seat and a plurality of movable contacts circumferentially uniformly distributed on the rotating disk, each movable contact is conductively connected to a connecting wire, and the movable contact can rotate with the rotating disk to contact and conductively connect with any fixed contact. The operation is quick and simple, and the working efficiency and safety of the insulation test and the electrical conductivity test of the cable are improved.

Description

Technical Field

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

[0002] The wire and cable industry is a rapidly developing industry in China. Cables are necessities of life and can be found almost everywhere. Cables are usually composed of several or several groups of wires twisted together into a rope-like structure, in which each group of wires is insulated from each other, and several groups of wires are wound and then covered with a highly insulating covering layer to form a cable, which has the characteristics of internal electricity and external insulation.

[0003] When the cable is manufactured, repaired, or one end of the cable needs to be replaced, the new cable needs to be tested for electrical conductivity and insulation. At this time, a phase test is required. Generally, the cable is three-phase, and each phase needs to be tested. During the test, the tested phase needs to be clamped and the other two phases are grounded. After the tested phase is tested, the tested phase is fully discharged again with the discharge clamp, and then the other phase is tested. Repeat the operation, and the three phases are tested in turn. This requires the operator to repeatedly plug and unplug, which not only affects the detection efficiency, but also has a cumbersome process and high labor intensity. It is easy to cause process confusion and there is a risk of leakage, which may cause safety hazards.

[0004] In order to solve the above problems, it is urgent to design a cable testing device. Summary of the invention

[0005] The object of the present invention is to provide a cable testing device which is easy to operate and improves the working efficiency and safety of insulation testing and electrical conductivity testing of cables.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A cable testing device, comprising:

[0008] Fixed seat;

[0009] A plurality of clamping mechanisms are arranged on the fixing seat, the clamping mechanisms are configured to clamp the wire to be tested, and each of the clamping mechanisms comprises a fixed contact which is electrically connected to the wire to be tested;

[0010] A driving mechanism, drivingly connected to the clamping mechanism, wherein the driving mechanism is configured to drive the clamping mechanism to clamp the wire to be tested; and

[0011] The conversion mechanism comprises a rotating disk rotatably arranged on the fixed seat and a plurality of movable contacts circumferentially evenly distributed on the rotating disk, each of the movable contacts is conductively connected to a connecting wire, and the movable contact can rotate with the rotating disk until it contacts and conductively connects with any one of the fixed contacts.

[0012] Optionally, the rotating disk comprises a receiving cavity, the movable contact is elastically arranged at an opening end of the receiving cavity, and the connecting wire is arranged in the receiving cavity.

[0013] Optionally, a spring is provided in the accommodating cavity, and one end of the spring is connected to the movable contact.

[0014] Optionally, the above-mentioned accommodating cavity includes:

[0015] A first hole connected to the central hole of the rotating disk; and

[0016] The second hole is connected to the first hole. The diameter of the second hole is larger than that of the first hole. The spring is placed in the second hole.

[0017] Optionally, the conversion mechanism further comprises an insulating sleeve, which is passed through the central hole and fixedly connected to the rotating disk, and the connecting wire passes through the second hole, the first hole and the insulating sleeve in sequence and extends outward.

[0018] Optionally, the clamping mechanism comprises:

[0019] A first clamping plate, fixedly connected to the fixing seat and electrically connected to the fixing contact; and

[0020] The second clamping plate is driven and connected to the driving mechanism. The second clamping plate can be driven by the driving mechanism to move in a direction close to the first clamping plate, and cooperates with the first clamping plate to clamp the wire to be tested.

[0021] Optionally, the driving mechanism includes a driving disk, a vortex groove is formed on one side of the driving disk, and the clamping mechanism also includes a slider and teeth. The slider is passed through the fixed seat, and one end of the slider is connected to the tooth, and the other end is connected to the second clamping plate. The tooth is slidably arranged in the vortex groove, and the vortex groove is configured to drive the tooth to slide, so as to drive the slider to move in a direction close to the first clamping plate.

[0022] Optionally, a limiting through hole is provided on the fixing seat, a limiting groove is provided in a side wall of the limiting through hole, and the sliding block is slidably disposed in the limiting groove.

[0023] Optionally, the fixing seat is provided with an inner cavity, and the rotating disk is rotatably disposed in the inner cavity.

[0024] Optionally, a second slot is provided at the bottom of the fixed contact, and the movable contact can be snapped into the second slot.

[0025] Beneficial effects of the present invention:

[0026] The present invention provides a cable testing device, which can drive multiple clamping mechanisms arranged on a fixed seat through a driving mechanism, so that the clamping mechanism can clamp multiple different phases of the wires to be tested separately, and make the multiple different phases of the wires to be tested all connected to the corresponding fixed contacts; then the conversion mechanism is rotated to drive the rotating disk arranged on the fixed seat and the multiple movable contacts circumferentially evenly distributed on the rotating disk to rotate to contact and connect with any one of the fixed contacts, and through the connection between the movable contact and the fixed contact, the wire to be tested clamped by the clamping mechanism is electrically connected to the connecting wire connected to the movable contact. Through the above structure, the connecting wire connected to the movable contact is connected to the test mechanism in advance, one of the connecting wires is connected to the test end, and the remaining connecting wires are connected to the ground end. Through the rotation of the rotating disk, the electrical conductivity test and insulation test of multiple different phases of the wires can be realized in turn. After one phase is tested, it is only necessary to manually discharge, and no other operations are required. The operation is quick and simple, which improves the work efficiency and safety of the insulation test and electrical conductivity test of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a structural schematic diagram of a cable testing device provided in a specific embodiment of the present invention;

[0028] Figure 2 is a partial exploded cross-sectional view of a cable testing device provided in a specific embodiment of the present invention;

[0029] Figure 3 It is a partial structural schematic diagram of a cable testing device provided in a specific embodiment of the present invention;

[0030] Figure 4 is a cross-sectional view of a rotating disk provided in a specific embodiment of the present invention;

[0031] Figure 5 is a schematic structural diagram of a second clamping plate, a slider and a tooth provided in a specific embodiment of the present invention;

[0032] Figure 6 It is a schematic structural diagram of a fixed contact provided in a specific embodiment of the present invention.

[0033] In the figure:

[0034] 10. fixing seat; 11. limiting through hole; 111. limiting groove; 12. inner cavity; 13. fixing rod; 14. mounting seat; 141. mounting groove; 142. fixing part; 15. fixing plate; 16. clamping plate;

[0035] 20. Clamping mechanism; 21. Fixed contact; 211. Second clamping slot; 22. First clamping plate; 23. Second clamping plate; 24. Slider; 241. Limiting block; 25. Tooth;

[0036] 30. driving mechanism; 31. driving plate; 311. vortex groove; 32. driving rod;

[0037] 40. Conversion mechanism; 41. Rotating disk; 411. Accommodating chamber; 4111. First hole; 4112. Second hole; 42. Movable contact; 43. Connecting wire; 44. Spring; 45. Insulating sleeve; 46. Crank handle; 461. Crank handle; 47. Rotating shaft; 471. Front shaft; 4711. Groove; 472. Rear shaft. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] Embodiment 1

[0043] At present, most cables are three-phase cables. When inspecting, testing and repairing the cables, it is necessary to perform electrical conductivity tests and insulation tests on the cables. When performing the tests, the operators usually perform electrical conductivity tests and insulation tests on the three phase lines respectively. First, the test phase is clamped so that the test phase is connected to the test tool, and then the other two phases are clamped and connected by the ground terminal for testing. After the test phase is tested, the test phase needs to be fully discharged with a discharge clamp, and then multiple phase lines are removed, and another phase is re-tested as the test phase. The above operations must be repeated to complete the electrical conductivity test and insulation test of multiple phase lines. The above test method requires multiple plugging and unplugging, which affects the test efficiency, and is easy to connect the wrong lines, posing a safety hazard.

[0044] In order to solve the above problems, Figures 1 to 3 As shown, this embodiment provides a cable testing device, including a fixing seat 10, a clamping mechanism 20, a driving mechanism 30 and a conversion mechanism 40, which are used to connect the test tool and the wire to be tested, and the operation is simple, which improves the test efficiency and safety of the insulation test and the electrical conductivity test of the cable. Specifically, the setting of the fixing seat 10 can realize the fixation of multiple clamping mechanisms 20, driving mechanisms 30 and conversion mechanisms 40. Multiple clamping mechanisms 20 can clamp and connect the wire to be tested, and each clamping mechanism 20 includes a fixed contact 21 that is conductively connected to the wire to be tested, which can realize the electrical conductivity test and insulation test of the three-phase cable or other multi-phase wire structure, and try to get rid of the form of detection by the operator plugging and unplugging, thereby improving work efficiency. In addition, the driving mechanism 30 is driven and connected to the clamping mechanism 20, so that the driving mechanism 30 can drive the clamping mechanism 20 to clamp the wire to be tested, and the clamping end of the clamping mechanism 20 can be opened and closed, which is convenient for taking and placing the wire to be tested. Furthermore, the conversion mechanism 40 includes a rotating disk 41 rotatably disposed on the fixed seat 10 and a plurality of movable contacts 42 axially uniformly distributed on the rotating disk 41. Figure 4Each movable contact 42 is conductively connected to a connecting wire 43, and each movable contact 42 can rotate with the rotating disk 41 to contact and conductively connect with any fixed contact 21. Through the conductive connection between the fixed contact 21 and the movable contact 42, the conductive connection between the wire to be tested and the connecting wire 43 can be achieved. After multiple connecting wires 43 are respectively connected to the test tool, the rotating disk 41 is rotated to achieve that the wire to be tested clamped by each clamping mechanism 20 can be connected to the test tool and tested. The operation is simple, convenient and fast, which improves the work efficiency and safety of insulation testing and electrical conductivity testing.

[0045] Through the above structure, when conducting the conductivity test and insulation test of three-phase cable or other various wire structures, the cable test device is first connected to the test tool, that is, one connecting wire 43 is connected to the test end, and the other connecting wires 43 are connected to the ground end, and then the wires to be tested are placed in the clamping mechanism 20 respectively, and the clamping mechanism 20 is driven by the driving mechanism 30 to clamp the wires to be tested. At the same time, the wire to be tested is conductively connected to the fixed contact 21, and the rotating disk 41 is rotated to drive the movable contact 42 conductively connected to the connecting wire 43 to rotate until it contacts and conductively connects with the fixed contact 21. At this time, one phase The wire to be tested is connected to the tested end of the test tool for testing. After the test is completed, the test tool is closed, and the connecting wire 43 connected to the tested end is connected to the discharge clamp for discharge. The rotating disk 41 is driven to rotate, so that the wires to be tested of other phases can be connected to the tested end of the test tool and tested. By repeating the above test process, the electrical conductivity test and insulation test of all the wires to be tested clamped in the cable testing device can be achieved. It is convenient and fast, and there is no need to perform unnecessary plugging and unplugging operations, which avoids the chaotic placement of the wires to be tested, thereby avoiding safety problems and improving the work efficiency and safety of insulation testing and electrical conductivity testing.

[0046] In this embodiment, if Figure 4As shown, the rotating disk 41 includes a housing cavity 411, a movable contact 42 is elastically arranged at the open end of the housing cavity 411, and a connecting wire 43 is arranged in the housing cavity 411, so that the movable contact 42 and the connecting wire 43 can be electrically connected. Optionally, a spring 44 is further arranged in the housing cavity 411, and one end of the spring 44 is connected to the movable contact 42. The arrangement of the spring 44 makes the movable contact 42 retractable, and can be in the same plane as the rotating disk 41 and abut against other structures together, so as to avoid limitations on the installation position of the rotating disk 41 and avoid interference with other structures during the rotation of the rotating disk 41, and can achieve better contact between the movable contact 42 and the fixed contact 21. Optionally, the accommodating cavity 411 includes a first hole 4111 and a second hole 4112, the first hole 4111 is connected to the center hole of the rotating disk 41, the second hole 4112 is connected to the first hole 4111, and the diameter of the second hole 4112 is larger than the diameter of the first hole 4111, and the spring 44 is arranged in the second hole 4112, so that the spring 44 can be installed, thereby realizing the retractability of the movable contact 42; and one end of the connecting wire 43 is connected to the movable contact 42, and the other end is successively passed through the second hole 4112 and the first hole 4111 and extends into the center hole of the rotating disk 41 and extends outward.

[0047] Furthermore, if Figure 2 As shown, the conversion mechanism 40 also includes an insulating sleeve 45, which is passed through the center hole of the rotating disk 41 and fixedly connected to the rotating disk 41, so that the connecting wire 43 can pass through the second hole 4112, the first hole 4111 and the insulating sleeve 45 in sequence and extend outward. Through the above structure, the connecting wire 43 can be positioned so that the connecting wire 43 extends outward and is connected to the test tool, thereby realizing the connection between the movable contact 42 and the test tool.

[0048] Alternatively, if Figure 2 and Figure 3 As shown, the conversion mechanism 40 also includes a crank 46, which is fixedly connected to the peripheral wall of one end of the insulating sleeve 45. The crank 46 can drive the insulating sleeve 45 to rotate, thereby realizing the rotation of the rotating disk 41. Optionally, the other end of the crank 46 is connected to a rotating rod, and the rotating rod is connected to a motor. The motor drives the crank 46 to rotate along the axis of the insulating sleeve 45, driving the rotating disk 41 to rotate, so that the multiple movable contacts 42 and the multiple fixed contacts 21 are in contact with each other and are conductively connected. Optionally, a crank handle 461 is provided at the free end of the crank handle 46, and the crank handle 461 is parallel to the insulating sleeve 45 and extends outward, so that the operator or the motor can better control the conversion mechanism 40 and avoid touching other structures during operation.

[0049] Furthermore, if Figure 2As shown, the conversion mechanism 40 also includes a rotating shaft 47, which is rotatably connected to the driving mechanism 30, and the rotating shaft 47 is sleeved on the insulating sleeve 45, and one end of the rotating shaft 47 is detachably connected to the rotating disk 41, which can achieve radial fixation of the conversion mechanism 40, and can protect the insulating sleeve 45 and the connecting wire 43 passing through the insulating sleeve 45. Optionally, the rotating shaft 47 is provided with a first through hole, and the insulating sleeve 45 is fixedly connected to the first through hole of the rotating shaft 47, so that the rotating shaft 47 and the insulating sleeve 45 can be connected. Optionally, the insulating sleeve 45 and the rotating shaft 47 can be integrally formed for easy manufacturing.

[0050] Optionally, the rotating shaft 47 includes a front shaft 471 and a rear shaft 472, and the front shaft 471 and the rear shaft 472 are detachably connected. A groove 4711 is provided along the circumferential direction at one end where the front shaft 471 is connected to the rear shaft 472, and the groove 4711 is engaged with the driving mechanism 30, so as to better achieve the engagement of the rotating shaft 47 with the driving mechanism 30, thereby achieving the position limiting and fixing of the rotating shaft 47. Optionally, the driving disk 31 is provided with a second through hole, so that the rotating shaft 47 can be inserted into the second through hole. Optionally, the driving disk 31 is provided with a snap ring along the circumferential direction of the inner wall of the second through hole, and the groove 4711 can be engaged in the snap ring. Through the detachable connection between the front shaft 471 and the rear shaft 472, the snap ring is better engaged with the groove 4711, so as to achieve the axial position limiting of the rotating shaft 47, thereby better achieving the engagement and fixing of the rotating shaft 47 with the driving mechanism 30. It can be understood that, in this embodiment, the connection methods between the front shaft 471 and the rear shaft 472, and between the rotating disk 41 and the rotating shaft 47 include snap-on connection and bonding, etc., which are not specifically limited here.

[0051] In this embodiment, if Figure 1 and Figure 2 As shown, the clamping mechanism 20 includes a first clamping plate 22 and a second clamping plate 23. The first clamping plate 22 is fixedly connected to the fixing seat 10 and is conductively connected to the fixed contact 21. The second clamping plate 23 is driven and connected to the driving mechanism 30, so that the driving mechanism 30 can drive the second clamping plate 23 to move in a direction close to the first clamping plate 22, and cooperate with the first clamping plate 22 to clamp the wire to be tested, so as to achieve the clamping of the wire to be tested and the conductive connection between the wire to be tested and the fixed contact 21. Optionally, the first clamping plate 22 and the second clamping plate 23 are semicircular structures, so that the first clamping plate 22 and the second clamping plate 23 can be closed to form a circular ring structure, which is more in line with the shape of the wire to be tested, so that the first clamping plate 22 and the second clamping plate 23 can better clamp the wire to be tested. Preferably, the first clamping plate 22 can be made of insulating material or the surface of the first clamping plate 22 is coated with an insulating layer, and the second clamping plate 23 is a conductive material.

[0052] Furthermore, if Figure 2 and Figure 5As shown, the clamping mechanism 20 also includes a slider 24 and a tooth 25. The slider 24 is inserted into the fixed seat 10, and one end of the slider 24 is connected to the tooth 25, and the other end is connected to the second clamping plate 23. Figure 2 As shown, the driving mechanism 30 includes a driving disk 31, and a vortex groove 311 is opened on one side of the driving disk 31. The tooth 25 is slidably arranged in the vortex groove 311, so that when the driving disk 31 rotates, the vortex groove 311 rotates, driving the tooth 25 to slide along the vortex groove 311, thereby driving the slider 24 and the second clamping plate 23 to move in a direction close to the first clamping plate 22, thereby achieving the clamping of the first clamping plate 22 and the second clamping plate 23 on the wire to be measured. Specifically, the farthest end of the tooth 25 from the center of the vortex groove 311 is set as the initial position. At this time, the second clamping plate 23 is farthest from the first clamping plate 22, and the wire to be tested can be placed between the first clamping plate 22 and the second clamping plate 23. When the driving disk 31 rotates in one direction, the tooth 25 continues to slide along the vortex groove 311, and slides to the end closest to the center of the vortex groove 311 and stops. At this time, the second clamping plate 23 and the first clamping plate 22 clamp the wire to be tested; when the wire to be tested has been tested, the driving disk 31 rotates in the opposite direction, so that the tooth 25 slides along the vortex groove 311, and slides to the end farthest from the center of the vortex groove 311 and stops. At this time, the first clamping plate 22 is farthest from the first clamping plate 22 and is in an open state, and the wire to be tested can be taken out.

[0053] Alternatively, if Figure 2 As shown, the fixing seat 10 is provided with a limiting through hole 11, and a limiting groove 111 is provided in the side wall of the limiting through hole 11. The slider 24 can be slidably arranged in the limiting groove 111, so that the second clamping plate 23 can only move in the direction close to or away from the first clamping plate 22, thereby avoiding the deviation of the movement trajectory of the slider 24, thereby avoiding the first clamping plate 22 and the second clamping plate 23 from clamping the test wire too loosely, thereby avoiding the poor contact between the test wire and the fixed contact 21. Optionally, as Figure 5 As shown, the slider 24 is further provided with a limit block 241 , which is engaged in the limit slot 111 to limit the slider 24 so that the slider 24 can only move in a direction close to or away from the first clamping plate 22 .

[0054] Furthermore, if Figure 2 and Figure 3 As shown, the driving mechanism 30 further includes a driving rod 32, which is disposed on the other side of the driving disk 31. The driving rod 32 drives the driving disk 31 to rotate, so that the teeth 25 can slide along the vortex groove 311, thereby causing the second clamping plate 23 to move in a direction close to the first clamping plate 22. Optionally, the other end of the driving rod 32 is connected to a rotating rod, which is connected to a motor, and the driving rod 32 is driven by the motor to rotate along the axis of the driving disk 31, thereby driving the driving disk 31 to rotate.

[0055] In this embodiment, if Figure 1 As shown, the above-mentioned fixed seat 10 is a disc-shaped structure, and the clamping mechanism 20 is evenly distributed on the fixed seat 10 along the circumference, and is more closely fitted with the rotating disk 41, so as to facilitate the one-to-one corresponding conductive connection between the fixed contact 21 and the movable contact 42. Optionally, the fixed seat 10 includes a fixing rod 13, and the fixing rod 13 can be handheld, which is convenient for the operator to operate. Optionally, the fixed seat 10 also includes a mounting seat 14, and the mounting seat 14 can be installed on the operating table. The mounting seat 14 is provided with a mounting groove 141, and the fixing rod 13 can be arranged in the mounting groove 141 for fixing. Optionally, the mounting seat 14 also includes a fixing portion 142, and the fixing portion 142 can be arranged at the bottom of the mounting seat 14 and extend outward, and the fixing portion 142 is provided with a third through hole, and the bolt passes through the third through hole to fix it with the operating table, so that the mounting seat 14 can be fixedly placed, thereby making the cable testing device stably placed. Optionally, a plurality of fixing portions 142 are provided, so that the mounting seat 14 is more firmly fixed on the operating table, thereby making the cable testing device stably placed. It is understandable that the fixing seat 10 can also be fixedly connected by bonding, clamping, or other fixing methods, which are not limited here.

[0056] Alternatively, if Figure 2 and Figure 4 As shown, the fixed seat 10 is provided with an inner cavity 12, and the rotating disk 41 is rotatably disposed in the inner cavity 12, so that the rotating disk 41 can be rotatably disposed on the fixed seat 10. Optionally, the fixed contact 21 is fixedly connected to the fixed seat 10, and one end thereof extends into the inner cavity 12, so that the fixed contact 21 and the movable contact 42 can be electrically connected, and because the rotating disk 41 is rotatably disposed in the inner cavity 12, the movable contact 42 can be electrically connected to any fixed contact 21. Optionally, as Figure 6 As shown, a second slot 211 is provided at the bottom of the fixed contact 21, and the movable contact 42 is engaged in the second slot 211. When the movable contact 42 rotates with the rotating disk 41 to contact the fixed contact 21, the movable contact 42 extends into the second hole 4112 and is flush with the outer peripheral surface of the rotating disk 41, so that the rotating disk 41 is not affected by the movable contact 42 when rotating. Then the movable contact 42 continues to rotate with the rotating disk 41, and when it rotates into the second slot 211, it can be engaged in the second slot 211. At this time, the rotating disk 41 stops rotating, and the electrical connection between the fixed contact 21 and the movable contact 42 is realized, and then the electrical connection between the wire to be tested and the connecting wire 43 can be realized. Optionally, the periphery of the second slot 211 is rounded, so that when the movable contact 42 contacts the second slot 211, it is smoother to avoid damaging the movable contact 42.

[0057] Alternatively, if Figure 2As shown, the fixing seat 10 includes a fixing plate 15 and a clamping plate 16, the inner cavity 12 is formed by the fixing plate 15 and the clamping plate 16, and the rotating disk 41 is arranged between the fixing plate 15 and the clamping plate 16 to achieve axial limitation of the rotating disk 41. Optionally, a fourth through hole is opened on the clamping plate 16, and the conversion mechanism 40 can be inserted into the fourth through hole.

[0058] In this embodiment, the cable testing device also includes a control mechanism, which can control the rotation of the driving mechanism 30 and the conversion mechanism 40. In this embodiment, the control mechanism can be a centralized or distributed control mechanism. For example, the control mechanism can be a single microcontroller or a distributed plurality of microcontrollers.

[0059] In this embodiment, if Figure 1-6 As shown, by connecting the connecting wire 43 of one phase to the test end of the test tool and connecting the connecting wires 43 of other phases to the grounding end of the test tool, the connection between the movable contact 42 and the test tool can be achieved; then the wire to be tested is placed on the first clamping plate 22, and the second clamping plate 23 is driven by the driving disk 31 to move in the direction close to the first clamping plate 22, thereby clamping the wire to be tested, so that the wire to be tested and the fixed contact 21 connected to the first clamping plate 22 are conductively connected, and the rotating disk 41 is rotated to make the fixed contact 21 and the movable contact 42 conductively connected, so that the test of the wire to be tested can be achieved, and the test is completed. After completing the test of one phase line, turn off the test tool and discharge the connecting wire 43 connected to the test end through the discharge clamp; then rotate the rotating disk 41 to achieve conductive contact between the movable contact 42 connected to the test end of the test tool and the fixed contact 21 connected to the other phase wire to be tested, and perform the test. Repeat the above steps to achieve the electrical conductivity test and insulation test of multiple phase lines. It is convenient and fast, without the need for unnecessary plugging and unplugging operations, avoiding the disorderly placement of the wires to be tested, and thus avoiding safety problems, thereby improving the work efficiency and safety of insulation testing and electrical conductivity testing.

[0060] Embodiment 2

[0061] This embodiment provides a cable testing device. The difference between this embodiment and embodiment 1 is that, in this embodiment, the driving mechanism 30 includes a bracket and a linear motor. The bracket is fixedly connected to the fixed seat 10, the linear motor is fixedly connected to the bracket, the conversion mechanism 40 is penetrated and rotatably arranged on the bracket, and the output end of the linear motor is connected to the slider 24, so that the slider 24 can reciprocate in the direction of approaching and moving away from the first clamping plate 22, thereby realizing the clamping of the second clamping plate 23 and the first clamping plate 22 on the wire to be tested.

[0062] Embodiment 3

[0063] This embodiment provides a cable testing device. The difference between this embodiment and the first embodiment is that, in this embodiment, the cable testing device further includes a discharge mechanism, which includes a connecting shaft, a rotating member and a discharge member. The connecting shaft is fixedly connected to the insulating sleeve 45 and is arranged opposite to the crank 46. The rotating member is rotatably connected to the connecting shaft. One end of the discharge member is connected to the rotating member, and the other end can be connected to the ground terminal through a wire. The discharge member can rotate with the rotation of the rotating member, so that the discharge member contacts the conductive end of the connecting wire 43 to achieve discharge of the connecting wire 43. Optionally, the rotating member can be connected to the motor, which is more convenient and quick. Through the above structure, after testing one phase of the wire to be tested, the control mechanism controls the motor to drive the rotating member to rotate a certain angle, so that the discharge member contacts the conductive end of the connecting wire 43, and then discharge of the connecting wire 43 can be achieved. After discharging for a period of time, the control mechanism controls the motor to drive the rotating member to rotate a certain angle in the opposite direction, so that the discharge member is disconnected from the connecting wire 43. Optionally, the discharge member is an arc-shaped structure, which can be in more comprehensive contact with the connecting wire 43 to achieve a better discharge effect on the connecting wire 43.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cable testing device, characterized in that: include: Fixed seat (10); A plurality of clamping mechanisms (20) are arranged on the fixing seat (10), the clamping mechanisms (20) being configured to be able to clamp the wire to be tested, and each of the clamping mechanisms (20) comprising a fixed contact (21) conductively connected to the wire to be tested; A driving mechanism (30) is drivingly connected to the clamping mechanism (20), and the driving mechanism (30) is configured to be able to drive the clamping mechanism (20) to clamp the wire to be tested; as well as A conversion mechanism (40), the conversion mechanism (40) comprising a rotating disk (41) rotatably disposed on the fixed seat (10) and a plurality of movable contacts (42) circumferentially uniformly distributed on the rotating disk (41), each of the movable contacts (42) being conductively connected to a connecting wire (43), and the movable contact (42) being able to rotate with the rotating disk (41) to contact and conductively connect with any one of the fixed contacts (21); The rotating disk (41) comprises a receiving cavity (411), the movable contact (42) is elastically arranged at an open end of the receiving cavity (411), and the connecting wire (43) is arranged in the receiving cavity (411); A spring (44) is provided in the accommodating cavity (411), and one end of the spring (44) is connected to the movable contact (42); The accommodating cavity (411) comprises a first hole (4111) and a second hole (4112), wherein the first hole (4111) is connected to the central hole of the rotating disk (41); the second hole (4112) is connected to the first hole (4111), the diameter of the second hole (4112) is larger than the diameter of the first hole (4111), and the spring (44) is placed in the second hole (4112); The clamping mechanism (20) comprises a first clamping plate (22) and a second clamping plate (23); the first clamping plate (22) is fixedly connected to the fixing seat (10) and is electrically connected to the fixing contact (21); the second clamping plate (23) is drivingly connected to the driving mechanism (30); the second clamping plate (23) can be driven by the driving mechanism (30) to move in a direction close to the first clamping plate (22), and cooperates with the first clamping plate (22) to clamp the wire to be tested; The driving mechanism (30) comprises a driving disk (31), one side of which is provided with a vortex groove (311); the clamping mechanism (20) further comprises a slider (24) and a tooth (25); the slider (24) is inserted into the fixing seat (10), one end of the slider (24) is connected to the tooth (25), and the other end is connected to the second clamping plate (23); the tooth (25) is slidably arranged in the vortex groove (311), and the vortex groove (311) is configured to be able to drive the tooth (25) to slide, so as to drive the slider (24) to move in a direction close to the first clamping plate (22).

2. The cable testing device according to claim 1, characterized in that: The conversion mechanism (40) further comprises an insulating sleeve (45), wherein the insulating sleeve (45) is passed through the central hole and fixedly connected to the rotating disk (41), and the connecting wire (43) passes through the second hole (4112), the first hole (4111) and the insulating sleeve (45) in sequence and extends outward.

3. The cable testing device according to claim 1, characterized in that: The fixing seat (10) is provided with a limiting through hole (11), a limiting groove (111) is provided in a side wall of the limiting through hole (11), and the sliding block (24) is slidably disposed in the limiting groove (111).

4. The cable testing device according to any one of claims 1 to 3, characterized in that: The fixing seat (10) is provided with an inner cavity (12), and the rotating disk (41) is rotatably disposed in the inner cavity (12).

5. The cable testing device according to any one of claims 1 to 3, characterized in that: A second slot (211) is provided at the bottom of the fixed contact (21), and the movable contact (42) can be snap-connected in the second slot (211).

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