Withstand voltage test device for cable

Abstract

The utility model relates to the technical field of test devices, and discloses a cable withstand voltage test device, which comprises a cart internally provided with a test unit; a through groove is formed in the trolley, and the trolley is slidably connected with a sliding plate through the through groove. A grounding assembly is arranged in the cart; the grounding assembly comprises a motor installed at the top of the cart; a lead screw is mounted at the output end of the motor; during use, the motor is started to drive the lead screw to rotate, the adjusting seat can be adjusted to move downwards, the connector connected with the ground wire can be driven to be inserted into the ground, automatic ground wire burying is achieved, convenience and rapidness are achieved, meanwhile, after the connector is inserted into the ground, the push plate can push the unlocking plate to drive the limiting sliding block to slide out of the groove in the sliding plate, and the connector is convenient to use. Therefore, the area of the surface of the cart can be conveniently expanded, and the cable can be conveniently placed on the sliding plate to be tested, so that the test cart is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, specifically a cable withstand voltage testing device. Background Technology

[0002] As power cables are used, their voltage levels, lengths, and cross-sectional areas become increasingly higher, which places higher demands on on-site testing. This necessitates AC withstand voltage testing of power cables, thus requiring an AC withstand voltage testing vehicle.

[0003] Existing AC withstand voltage testing equipment generally requires manual grounding, which increases the workload and difficulty of grounding, and reduces the effectiveness of the grounding. In related technologies, such as the AC withstand voltage testing vehicle for power cables with publication number CN220650814U, a grounding component is used to automatically bury the ground wire, eliminating the need for manual burying. This simplifies the grounding process, reduces the workload, and improves the effectiveness of grounding. However, when using the testing vehicle for withstand voltage testing, usually only one end of the cable is tested, while the other end is suspended. A separate support device is required to support the cable during the test, causing inconvenience. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a cable withstand voltage testing device that is convenient for burying ground wires and for placing cables during testing, thus solving the problem that existing cable withstand voltage testing devices are not easy to place cables in.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a cable withstand voltage testing device, comprising: a trolley, wherein a testing unit is installed inside; the trolley has a through groove inside, and a sliding plate is slidably connected through the through groove; a grounding assembly is installed inside the trolley; the grounding assembly includes: a motor, installed on the top of the trolley; a lead screw is installed at the output end of the motor; an adjusting seat is threaded to the outside of the lead screw; a ground wire is installed inside the adjusting seat, and the ground wire is electrically connected to the testing unit; a connector is fixedly connected to the bottom of the adjusting seat, and the ground wire is electrically connected to the connector; an unlocking mechanism is installed inside the trolley, and the unlocking mechanism is connected to the sliding plate.

[0008] In some embodiments, the unlocking mechanism includes: a limiting slider slidably connected to the interior of the trolley; a first guide rod slidably connected to both sides of the limiting slider, and a spring sleeved on the outside of the first guide rod; an unlocking plate fixedly connected to one side of the limiting slider, and the unlocking plate slidably connected to a groove opened inside the trolley; and a push plate fixedly connected to one side of the adjusting seat, and the push plate is located above the groove outside the unlocking plate.

[0009] In some embodiments, the top of the limiting slider extends into a through groove inside the trolley, the protruding portion is provided with an inclined surface, and the interior of the sliding plate has a groove of the same size and shape as the protruding portion of the limiting slider.

[0010] In some embodiments, a clamping assembly is provided on one side of the sliding plate; the clamping assembly includes: a fixed base, fixedly connected to the top of one side of the sliding plate; a clamping base is fixedly connected inside the fixed base; a clamping block is slidably connected above the clamping base and inside the fixed base; and second guide rods are slidably connected to both sides of the clamping block, and springs are sleeved on the outside of the second guide rods.

[0011] In some embodiments, the fixing base, the clamping base and the clamping block are a set, and three sets are provided on the top of one side of the sliding plate.

[0012] In some embodiments, a groove is provided inside one side of the trolley, the groove is slidably connected to the adjustment seat, and the groove extends to the bottom of the trolley.

[0013] In some embodiments, sliders are fixedly connected to both sides of the sliding plate, and sliding grooves are opened on both sides of the internal through groove of the trolley, the length of which is shorter than the length of the trolley.

[0014] In some embodiments, the trolley is equipped with a battery that is electrically connected to the motor.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a cable withstand voltage testing device, which has the following features:

[0017] Beneficial effects:

[0018] In use, this utility model only requires starting the motor to rotate the lead screw, which allows the adjusting seat to move downwards, thus enabling the connector connected to the ground wire to be inserted into the ground, thereby achieving automatic burying of the ground wire. This is convenient and quick. At the same time, after the connector is inserted into the ground, the push plate will push the unlocking plate to cause the limit slider to slide out from the groove inside the sliding plate, thereby releasing the fixation of the sliding plate. This facilitates the expansion of the trolley surface area, making it convenient to place the cable on the sliding plate for testing and easy to use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the sliding plate of this utility model after it has been pulled out.

[0021] Figure 3 This is a schematic diagram of the grounding assembly of this utility model;

[0022] Figure 4 This is a schematic diagram of the clamping assembly of this utility model.

[0023] In the picture:

[0024] 11. Trolley; 12. Testing unit; 13. Sliding plate;

[0025] 2. Grounding assembly; 21. Motor; 22. Lead screw; 23. Adjusting seat; 24. Ground wire; 25. Connector; 26. Unlocking mechanism; 261. Limit slider; 262. Guide rod No. 1; 263. Unlocking plate; 264. Push plate;

[0026] 3. Clamping assembly; 31. Fixing base; 32. Clamping base; 33. Clamping block; 34. Guide rod No. 2. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0031] In use, connect the control box, transformer, impedance box and voltage divider with wires according to the test standards. Then connect one end of the cable to one side of the impedance box, turn on the power, and control the transmission voltage and time through the control box to test the withstand voltage performance of the cable.

[0032] In related technologies, such as the AC withstand voltage test vehicle for power cables with publication number CN220650814U, a ground wire burying component is used, which can automatically bury the ground wire without manual burying, thereby simplifying the ground wire burying process, reducing the labor burden, and improving the ground wire burying effect. However, when using the test vehicle to conduct withstand voltage tests, usually only one end of the cable is used for testing, while the other end of the cable is suspended. During the test, a separate support device is required to support the cable, which causes inconvenience in use.

[0033] To address some of the problems in related technologies, this application provides a cable withstand voltage testing device. In use, simply starting the motor 21 rotates the lead screw 22, allowing the adjusting seat 23 to move downwards, thus inserting the connector 25 connected to the ground wire 24 into the ground, achieving automatic grounding of the wire. This is convenient and quick. Simultaneously, after the connector 25 is inserted into the ground, the push plate 264 pushes the unlocking plate 263, causing the limiting slider 261 to slide out of the groove inside the sliding plate 13, thereby releasing the fixation on the sliding plate 13. This facilitates expanding the surface area of ​​the trolley 11, making it easier to place the cable on the sliding plate 13 for testing and convenient to use.

[0034] This application is described below with reference to the accompanying drawings and specific embodiments:

[0035] Combination Figures 1-4 This application provides a cable withstand voltage testing device, including: a trolley 11, in which a testing unit 12 is installed; a through groove is provided inside the trolley 11, and a sliding plate 13 is slidably connected through the through groove; a grounding component 2 is provided inside the trolley 11; the grounding component 2 includes: a motor 21, installed on the top of the trolley 11; a lead screw 22 is installed at the output end of the motor 21; an adjusting seat 23 is threadedly connected to the lead screw 22; a ground wire 24 is installed inside the adjusting seat 23, and the ground wire 24 is electrically connected to the testing unit 12; a connector 25 is fixedly connected to the bottom of the adjusting seat 23, and the ground wire 24 is electrically connected to the connector 25; an unlocking mechanism 26 is provided inside the trolley 11, and the unlocking mechanism 26 is connected to the sliding plate 13.

[0036] In use, the control box, transformer, impedance box, and voltage divider in the test unit 12 are connected by wires according to the test standards. Then, one end of the cable is connected to one side of the test unit 12, the power is turned on, and the voltage and time are controlled by the control box to test the withstand voltage performance of the cable. After the trolley 11 is moved to the test location, the motor 21 is started, which drives the lead screw 22 to rotate. The screw will then drive the adjusting seat 23 to move downward, which will drive the connector 25 connected to the ground wire 24 to move downward and insert it into the ground, thus realizing automatic burying of the ground wire, which is convenient and quick. At the same time, when the connector 25 is inserted into the ground, the push plate 264 will push the unlocking plate 263 to drive the limit slider 261 to slide out of the groove inside the sliding plate 13, thereby releasing the fixation of the sliding plate 13. This allows the sliding plate 13 to be slid out from the inside of the trolley 11, which facilitates the expansion of the surface area of ​​the trolley 11 and makes it easier to install the cable on the sliding plate 13 for testing.

[0037] In some embodiments, the unlocking mechanism 26 includes: a limiting slider 261 slidably connected to the inside of the trolley 11; a first guide rod 262 slidably connected to both sides of the limiting slider 261, and a spring sleeved on the outside of the first guide rod 262; an unlocking plate 263 fixedly connected to one side of the limiting slider 261, and the unlocking plate 263 slidably connected to a groove opened inside the trolley 11; and a push plate 264 fixedly connected to one side of the adjusting seat 23, and the push plate 264 is located above the groove on the outside of the unlocking plate 263.

[0038] In use, after the test is completed, adjust the adjusting seat 23 upward to release the pressure on the unlocking plate 263. The unlocking plate 263 is pushed upward to reset under the action of the spring. At this time, slide the sliding plate 13 into the inside of the trolley 11. During the movement of the sliding plate 13, it will press one side of the limiting slider 261, causing the limiting slider 261 to be retracted into the trolley 11 and compressing the spring outside the first guide rod 262. When the groove on one side of the sliding plate 13 reaches the top of the limiting slider 261, the limiting slider 261 will be pushed into the groove under the action of the spring, thereby limiting the sliding plate 13 and facilitating operation.

[0039] In some embodiments, the top of the limiting slider 261 extends into the through groove inside the trolley 11, the protruding part is provided with a slope, and the interior of the sliding plate 13 has a groove of the same size and shape as the protruding part of the limiting slider 261, so that when the sliding plate 13 is pushed toward the interior of the trolley 11, one side of the sliding plate 13 can press the slope on one side of the limiting slider 261, thereby retracting the limiting slider 261 into the interior of the trolley 11, which facilitates limiting the sliding plate 13.

[0040] In some embodiments, a clamping assembly 3 is provided on one side of the sliding plate 13; the clamping assembly 3 includes: a fixed base 31, which is fixedly connected to the top of one side of the sliding plate 13; a clamping base 32 is fixedly connected inside the fixed base 31; a clamping block 33 is slidably connected above the clamping base 32 and inside the fixed base 31; and a second guide rod 34 is slidably connected to both sides of the clamping block 33, and a spring is sleeved on the outside of the second guide rod 34.

[0041] When in use, after connecting the cable and without powering on, push the clamping block 33 upwards to place the end of the cable that needs to be suspended on the clamping base 32, and then release the clamping block 33. Under the action of the external spring of the second guide rod 34, the clamping block 33 clamps one end of the cable, preventing the cable from shaking and affecting the test results.

[0042] In some embodiments, the fixing base 31, the clamping base 32 and the clamping block 33 are a group, and three groups are provided on the top of one side of the sliding plate 13, which can clamp one end of the three phases of the cable at the same time.

[0043] In some embodiments, a groove is provided inside one side of the trolley 11. The groove is slidably connected to the adjustment seat 23 and extends to the bottom of the trolley 11, so that the connector 25 at the bottom of the adjustment seat 23 can extend out of the trolley 11 and be inserted into the ground.

[0044] In some embodiments, sliders are fixedly connected to both sides of the sliding plate 13, and sliding grooves are opened on both sides of the through groove inside the trolley 11. The length of the sliding grooves is shorter than the length of the trolley 11 to prevent the sliding plate 13 from falling out of the inside of the trolley 11.

[0045] In some embodiments, a battery is installed inside the trolley 11, which is electrically connected to the motor 21 to ensure that the adjustment seat 23 can be retracted into the trolley 11 even when there is no external power source, preventing the connector 25 from contacting the ground and affecting the movement of the trolley 11.

[0046] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0047] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A withstand voltage testing device for cables, characterized in that, include: A trolley (11) is provided with a test unit (12) installed inside; a through groove is provided inside the trolley (11), and a sliding plate (13) is slidably connected through the through groove; a grounding assembly (2) is provided inside the trolley (11); the grounding assembly (2) includes: A motor (21) is installed on the top of the trolley (11); a lead screw (22) is installed at the output end of the motor (21); an adjusting seat (23) is threaded onto the outside of the lead screw (22); a ground wire (24) is installed inside the adjusting seat (23), and the ground wire (24) is electrically connected to the testing unit (12); a connector (25) is fixedly connected to the bottom of the adjusting seat (23), and the ground wire (24) is electrically connected to the connector (25); an unlocking mechanism (26) is provided inside the trolley (11), and the unlocking mechanism (26) is connected to the sliding plate (13).

2. The cable withstand voltage testing device according to claim 1, characterized in that, The unlocking mechanism (26) includes: A limiting slider (261) is slidably connected to the inside of the trolley (11); a guide rod (262) is slidably connected to both sides of the limiting slider (261), and a spring is sleeved on the outside of the guide rod (262); an unlocking plate (263) is fixedly connected to one side of the limiting slider (261), and the unlocking plate (263) is slidably connected to a groove opened inside the trolley (11); a push plate (264) is fixedly connected to one side of the adjusting seat (23), and the push plate (264) is located above the groove outside the unlocking plate (263).

3. The withstand voltage testing device for cables according to claim 2, characterized in that: The top of the limiting slider (261) extends into the through groove inside the trolley (11), the protruding part is provided with a slope, and the inside of the sliding plate (13) has a groove that is the same size and shape as the protruding part of the limiting slider (261).

4. The cable withstand voltage testing device according to claim 1, characterized in that, A clamping assembly (3) is provided on one side of the sliding plate (13); the clamping assembly (3) includes: A fixed base (31) is fixedly connected to the top of one side of the sliding plate (13); a clamping base (32) is fixedly connected inside the fixed base (31); a clamping block (33) is slidably connected above the clamping base (32) and inside the fixed base (31); a second guide rod (34) is slidably connected to both sides of the clamping block (33), and a spring is sleeved on the outside of the second guide rod (34).

5. The cable withstand voltage testing device according to claim 4, characterized in that: The fixed base (31), the clamping base (32) and the clamping block (33) are a set, and three sets are provided on the top of one side of the sliding plate (13).

6. The withstand voltage testing device for cables according to claim 1, characterized in that: The inside of one side of the trolley (11) has a sliding groove that is slidably connected to the adjustment seat (23) and extends to the bottom of the trolley (11).

7. The withstand voltage testing device for cables according to claim 1, characterized in that: Both sides of the sliding plate (13) are fixedly connected to sliders, and the inside of the trolley (11) has sliding grooves on both sides, the length of which is shorter than the length of the trolley (11).

8. The withstand voltage testing device for cables according to claim 1, characterized in that: The trolley (11) is equipped with a storage battery, which is electrically connected to the motor (21).

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