A power cable withstand test device

Abstract

The application relates to the technical field of cable testing, and discloses a power cable withstand voltage test device which comprises a trolley, a storage box, a linear sliding table, a Z-shaped plate, a rotating shaft, a drill bit, a spline shaft, a universal ball bearing and a grounding wire. When in use, the rotating shaft can rotate under the action of external force, thereby driving the drill bit to rotate. Then, the linear sliding table is controlled to work, thereby driving the Z-shaped plate to move. Then, the rotating shaft is driven to move, and finally the drill bit rotates. Therefore, the drill bit can rotate and linearly move, so as to be inserted into the ground. Since the spline shaft can slide relative to the Z-shaped plate, under the action of gravity, the universal ball bearing can be attached to the rotating shaft. Therefore, the leaked current is introduced into the ground through the grounding wire, the spline shaft, the universal ball bearing, the rotating shaft and the drill bit. Moreover, since the drill bit does not relatively move with the grounding wire during the rotation of the drill bit, winding and wear and tear damage can be avoided.

Description

Technical Field

[0001] This application relates to the field of cable testing technology, and in particular to a power cable withstand voltage test device. Background Technology

[0002] A related technology (announcement number: CN220650814U) discloses an AC withstand voltage test vehicle for power cables, including a main body of the AC withstand voltage test vehicle. A grounding wire burying assembly is fixed on one outer wall of the main body of the AC withstand voltage test vehicle. The grounding wire burying assembly includes a lifting groove, a first motor, a lead screw, a lifting plate, a sliding plate, a threaded hole, a second motor, a first gear, a drill bit, a second gear, and a connecting hole.

[0003] In the process of implementing the technical solution disclosed herein, at least the following problems were found in the related technologies: This AC withstand voltage testing vehicle for power cables operates by starting the first motor, which drives the lead screw to rotate. Through the interaction between the threads and the guiding support, the lifting plate moves up and down, thus driving the drill bit to move up and down. Then, starting the second motor, through the meshing of the teeth, drives the drill bit to rotate. The drill bit rotates and moves linearly, eventually penetrating the ground. Leaked current is then conducted to the earth through the grounding wire and the drill bit. However, when the drill bit rotates, friction may cause wear and damage to the surface of the grounding wire. The grounding wire may also rotate, potentially causing entanglement.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] To provide a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. This summary is not a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these technical solutions, but rather serves as a prelude to the detailed explanations that follow.

[0006] This disclosure provides a power cable withstand voltage testing device to solve the problems mentioned in the background art.

[0007] In some technical solutions, the power cable withstand voltage testing device includes: a trolley; a storage box installed on the top of the trolley for holding a high-voltage DC generator and a voltage multiplier cylinder; a linear slide installed on the outer wall of the storage box along the height direction of the trolley; a U-shaped plate installed on the moving end of the linear slide; a rotating shaft rotatably passing through the bottom wall of the U-shaped plate along the height direction of the storage box, the rotating shaft including a groove at its top end; and a drill bit installed at the bottom end of the rotating shaft. The rotating shaft is coaxially distributed with the rotating shaft; a splined shaft is slidably inserted through the top wall of the U-shaped plate and coaxially distributed with the rotating shaft; a universal ball bearing is installed at the bottom end of the splined shaft, and the balls of the universal ball bearing are located inside the groove; a grounding wire passes through the side wall of the storage box, one end of the grounding wire is connected to the grounding interface of the high-voltage DC generator, and the other end of the grounding wire is connected to the top end of the splined shaft; wherein, the rotating shaft can be controlled to rotate to drive the drill bit to rotate.

[0008] Optionally, it further includes: a first motor mounted on the bottom wall of the C-shaped plate; a driving bevel gear mounted on the rotating end of the first motor; and a driven bevel gear mounted on the rotating shaft and meshing with the driving bevel gear.

[0009] Optionally, it further includes: a spring, fitted onto the spline shaft and located between the universal ball bearing and the top wall of the U-shaped plate.

[0010] Optionally, it also includes: a spline sleeve, which is slidably fitted onto the spline shaft and mounted on the top wall of the U-shaped plate.

[0011] Optionally, it also includes a retaining ring, which is mounted on the top of the spline shaft.

[0012] Optionally, it also includes: a seated bearing, fitted onto the rotating shaft and mounted on the bottom wall of the U-shaped plate.

[0013] Optionally, the vehicle includes: a frame, with the storage box mounted on top of the frame; drive wheels rotatably mounted on the frame and located on both sides of the frame along its width; tow wheels rotatably mounted on the frame and located on both sides of the frame along its width, with the tow wheels and drive wheels on both sides located at the four corners of the frame; and tracks respectively fitted onto the drive wheels and tow wheels on the same side.

[0014] Optionally, the trolley further includes: a second motor, mounted on the frame, located on both sides of the frame along the width direction of the frame, with the rotating ends of the second motor on both sides respectively connected to the drive wheels on both sides.

[0015] Optionally, the trolley further includes a support rod, which is installed between the frame and the storage box along the height direction of the trolley.

[0016] The power cable withstand voltage testing device provided in this disclosure can achieve the following technical effects: This disclosure provides a power cable withstand voltage testing device, comprising a trolley, a storage box, a linear slide, a C-shaped plate, a rotating shaft, a drill bit, a splined shaft, a universal ball bearing, and a grounding wire. The trolley is used to move the entire device. The storage box, mounted on top of the trolley, houses a high-voltage DC generator and a voltage multiplier. The generator and multiplier together produce a high DC voltage, which is then electrically connected to phase A of the cable. Phases A and B of the cable are electrically connected to the grounding interface of the high-voltage DC generator, with the other end of the cable suspended. The withstand voltage test is completed by operating the control panel of the high-voltage DC generator. The linear slide, along the height of the trolley, is mounted on the outer wall of the storage box, providing driving force for linear movement. The C-shaped plate is mounted on the moving end of the linear slide and moves along the height of the trolley under its influence. The rotating shaft, along the height of the storage box, rotatably passes through the bottom wall of the C-shaped plate, allowing it to rotate relative to the bottom wall of the plate. The rotating shaft includes a groove at its top to accommodate the balls of a universal ball bearing. The drill bit is mounted at the bottom of the rotating shaft and is coaxial with it, rotating under the shaft's influence. A splined shaft slidably passes through the top wall of a U-shaped plate and is coaxial with the rotating shaft, allowing it to slide relative to the plate's top wall. A universal ball bearing is mounted at the bottom of the splined shaft, with its balls located inside a groove to reduce friction and minimize wear. A grounding wire passes through the side wall of the storage compartment, with one end connected to the grounding interface of a high-voltage DC generator and the other end connected to the top of the splined shaft to conduct leakage current. The rotating shaft can be controlled to rotate, driving the drill bit.

[0017] In operation, the spindle rotates under external force, driving the drill bit to rotate. Controlling the linear slide moves the U-shaped plate, which in turn moves the spindle, ultimately rotating the drill bit. Therefore, the drill bit can perform both rotary and linear motion, thus penetrating the ground. Because the splined shaft can slide relative to the U-shaped plate, the universal ball bearing engages with the spindle under gravity. Thus, any leaked current is conducted to the ground via the grounding wire, splined shaft, universal ball bearing, spindle, and brick. Furthermore, since the drill bit does not move relative to the grounding wire during rotation, entanglement and wear damage are avoided.

[0018] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0019] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a cross-sectional view of a power cable withstand voltage testing device provided in an embodiment of this disclosure; Figure 2 yes Figure 1 Enlarged structural diagram at point A; Figure 3 This is a front view schematic diagram of a power cable withstand voltage testing device provided in an embodiment of this disclosure; Figure 4 This is a top view of the trolley structure of a power cable withstand voltage testing device provided in this embodiment of the present disclosure; Figure 5 This is a bottom view of the trolley structure of a power cable withstand voltage testing device provided in this embodiment.

[0020] Figure label: 01: Chassis; 02: Drive wheel; 03: Trailer wheel; 04: Track; 05: Second motor; 06: Support rod; 1: Trolley; 2: Storage box; 3: Linear slide; 4: C-shaped plate; 5: Shaft; 6: Drill bit; 7: Splined shaft; 8: Universal ball bearing; 9: Grounding wire; 10: Motor; 11: Spring; 12: Splined sleeve; 13: Retaining ring; 14: Bearing with seat. Detailed Implementation

[0021] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0022] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0023] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0024] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0025] Unless otherwise stated, the term "multiple" means two or more.

[0026] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0027] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0029] Combination Figures 1 to 5As shown, this embodiment of the present disclosure provides a power cable withstand voltage testing device, including a trolley 1, a storage box 2, a linear slide 3, a U-shaped plate 4, a rotating shaft 5, a drill bit 6, a splined shaft 7, a universal ball bearing 8, and a grounding wire 9. The trolley 1 is used to move the entire device. The storage box 2 is installed on the top of the trolley 1 and is used to hold a high-voltage DC generator and a voltage multiplier. The high-voltage DC generator and the voltage multiplier together generate a high DC voltage, which is then electrically connected to phase A of the cable. Phases A and B of the cable are electrically connected to the grounding interface of the high-voltage DC generator, and the other end of the cable is completely suspended. The withstand voltage test can then be completed by operating the control panel of the high-voltage DC generator. The linear slide 3 is installed on the outer wall of the storage box 2 along the height direction of the trolley 1 to provide driving force for linear movement. The U-shaped plate 4 is installed at the moving end of the linear slide 3 and moves along the height direction of the trolley 1 under the drive of the linear slide 3. A rotating shaft 5 is rotatably inserted through the bottom wall of the U-shaped plate 4 along the height direction of the storage box 2, allowing it to rotate relative to the bottom wall of the U-shaped plate 4. The rotating shaft 5 includes a groove at its top for accommodating the balls of the universal ball bearing 8. A drill bit 6 is mounted at the bottom end of the rotating shaft 5 and is coaxially distributed with it, rotating under the drive of the rotating shaft 5. A splined shaft 7 is slidably inserted through the top wall of the U-shaped plate 4 and is coaxially distributed with the rotating shaft 5, allowing it to slide relative to the top wall of the U-shaped plate 4. The universal ball bearing 8 is mounted at the bottom end of the splined shaft 7, with its balls located inside the groove to reduce friction and minimize wear. A grounding wire 9 passes through the side wall of the storage box 2, with one end connected to the grounding interface of the high-voltage DC generator and the other end connected to the top end of the splined shaft 7, for conducting leakage current. Among them, the rotating shaft 5 can be rotated in a controlled manner to drive the drill bit 6 to rotate.

[0030] This embodiment of the power cable withstand voltage testing device allows the rotating shaft 5 to rotate under external force, thereby driving the drill bit 6 to rotate. Then, controlling the linear slide 3 moves the U-shaped plate 4, which in turn moves the rotating shaft 5, ultimately causing the drill bit 6 to rotate. Therefore, the drill bit 6 can perform both rotational and linear motion, thus inserting itself into the ground. Since the spline shaft 7 can slide relative to the U-shaped plate, the universal ball bearing 8 can engage with the rotating shaft 5 under gravity. Therefore, leaked current is conducted to the ground via the grounding wire 9, spline shaft 7, universal ball bearing 8, rotating shaft 5, and brick. Furthermore, since the drill bit 6 does not move relative to the grounding wire 9 during rotation, entanglement and wear damage are avoided.

[0031] Optionally, combined Figure 1 and Figure 3As shown, it also includes a first motor 10, a driving bevel gear, and a driven bevel gear. The first motor 10 is mounted on the bottom wall of the U-shaped plate 4 to provide driving force for rotational motion. The driving bevel gear is mounted on the rotating end of the first motor 10 and rotates under the drive of the first motor 10. The driven bevel gear is mounted on the rotating shaft 5 to drive the rotating shaft 5 to rotate. The driven bevel gear meshes with the driving bevel gear to jointly transmit driving force and change the direction of force.

[0032] In this embodiment, controlling the first motor 10 to operate drives the active bevel gear to rotate. Through the meshing of the teeth, the driven bevel gear is driven to rotate. This, in turn, drives the rotating shaft 5 to rotate, ultimately achieving the automatic rotation function of the drill bit 6.

[0033] Optionally, combined Figures 1 to 3 As shown, it also includes a spring 11. The spring 11 is fitted onto the spline shaft 7 and is located between the universal ball bearing 8 and the top wall of the U-shaped plate 4.

[0034] In this embodiment, a spring 11 is also included, fitted onto the spline shaft 7 and located between the universal ball bearing 8 and the top wall of the U-shaped plate 4. The spring 11 provides elastic force so that the universal ball bearing 8 can always be in contact with the top of the spline shaft 7, thereby ensuring the transmission effect.

[0035] Optionally, combined Figures 1 to 3 As shown, it also includes a spline sleeve 12. The spline sleeve 12 is slidably fitted onto the spline shaft 7 and mounted on the top wall of the U-shaped plate 4.

[0036] In this embodiment, a spline sleeve 12 is also included, which is slidably fitted onto the spline shaft 7 and mounted on the top wall of the C-shaped plate 4. The spline sleeve 12 is used to reduce the friction between the spline shaft 7 and the top wall of the C-shaped plate 4, and to improve the accuracy of the spline shaft 7 when sliding relative to the top wall of the C-shaped plate 4.

[0037] Optionally, combined Figure 1 and Figure 3 As shown, it also includes a retaining ring 13. The retaining ring 13 is mounted on the top of the splined shaft 7.

[0038] In this embodiment, a retaining ring 13 is also included, which is mounted on the top end of the spline shaft 7. The retaining ring 13 serves to limit the movement of the spline shaft 7 from falling out of the spline sleeve or the top wall of the C-shaped plate 4.

[0039] Optionally, combined Figure 1 and Figure 3 As shown, it also includes a mounted bearing 14. The mounted bearing 14 is fitted onto the rotating shaft 5 and mounted on the bottom wall of the U-shaped plate 4.

[0040] In this embodiment, a seated bearing 14 is also included, which is fitted onto the rotating shaft 5 and mounted on the bottom wall of the C-shaped plate 4. The seated bearing 14 is used to reduce the friction between the rotating shaft 5 and the bottom wall of the C-shaped plate 4, and to improve the accuracy of the rotating shaft 5 when rotating relative to the C-shaped plate 4.

[0041] Optionally, combined Figure 1 and Figure 3 As shown, the vehicle 1 includes a frame 01, drive wheels 02, tow wheels 03, and tracks 04. A storage box 2 is mounted on top of the frame 01. The drive wheels 02 are rotatably mounted on the frame 01, located on both sides of the frame 01 along its width, and both drive wheels 02 can rotate relative to the frame 01. The tow wheels 03 are rotatably mounted on the frame 01, located on both sides of the frame 01 along its width, and both tow wheels 03 can rotate relative to the frame 01. The tow wheels 03 and drive wheels 02 are located at the four corners of the frame 01. Tracks 04 are respectively fitted onto the drive wheels 02 and tow wheels 03 on the same side for contact with the ground.

[0042] In this embodiment of the present disclosure, after the two drive wheels 02 rotate under the drive of external force, the two track 04 can move continuously along a specific trajectory under the support of the two drag wheels 03, and at this time the trolley 1 can drive the device to move continuously.

[0043] Optionally, combined Figure 5 As shown, the vehicle 1 also includes a second motor 05. The second motor 05 is mounted on the frame 01 and is located on both sides of the frame 01 along the width direction of the frame 01. The rotating ends of the second motors 05 on both sides are connected to the drive wheels 02 on both sides respectively.

[0044] In this embodiment, both second motors 05 on both sides provide driving force to achieve rotational movement. During use, controlling the operation of the second motors 05 on both sides drives the drive wheels 02 on both sides to rotate, ultimately realizing the automatic walking function of the device.

[0045] Optionally, combined Figure 1 , Figure 3 and Figure 4 As shown, the vehicle 1 also includes a support rod 06. The support rod 06 is installed between the frame 01 and the storage box 2 along the height direction of the vehicle 1.

[0046] In this embodiment, the trolley 1 further includes a support rod 06 installed along the height direction of the trolley 1 between the frame 01 and the storage box 2. The support rod 06 is used to determine the relative position of the trolley 1 and the storage box 2, and to adjust the distance between the trolley 1 and the storage box 2.

[0047] The foregoing description and accompanying drawings have fully illustrated embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A withstand voltage testing device for power cables, characterized in that, include: Car; A storage box, installed on the top of the trolley, is used to house the high-voltage DC generator and the voltage multiplier. A linear slide is installed on the outer wall of the storage box along the height direction of the trolley; A U-shaped plate is installed on the moving end of the linear slide table; A pivot shaft is rotatably inserted through the bottom wall of the U-shaped plate along the height direction of the storage box, and the pivot shaft includes a groove at its top. The drill bit is installed at the bottom end of the rotating shaft and is distributed coaxially with the rotating shaft; The spline shaft is slidably inserted through the top wall of the C-shaped plate and is coaxially distributed with the rotating shaft; A universal ball bearing is installed at the bottom end of the splined shaft, and the balls of the universal ball bearing are located inside the groove. A grounding wire passes through the side wall of the storage box. One end of the grounding wire is connected to the grounding interface of the high-voltage DC generator, and the other end of the grounding wire is connected to the top of the spline shaft. The rotating shaft can be controlled to rotate, thereby driving the drill bit to rotate.

2. The power cable withstand voltage testing device according to claim 1, characterized in that, Also includes: The first motor is installed on the bottom wall of the C-shaped plate; The driving bevel gear is installed on the rotating end of the first motor; The driven bevel gear is mounted on the rotating shaft and meshes with the driving bevel gear.

3. The power cable withstand voltage testing device according to claim 1, characterized in that, Also includes: A spring is fitted onto the splined shaft and is located between the universal ball bearing and the top wall of the U-shaped plate.

4. The power cable withstand voltage testing device according to claim 1, characterized in that, Also includes: A spline sleeve is slidably fitted onto the spline shaft and mounted on the top wall of the C-shaped plate.

5. The power cable withstand voltage testing device according to claim 1, characterized in that, Also includes: A retaining ring is installed at the top of the splined shaft.

6. The power cable withstand voltage testing device according to claim 1, characterized in that, Also includes: A seated bearing is fitted onto the rotating shaft and mounted on the bottom wall of the U-shaped plate.

7. A power cable withstand voltage testing device according to any one of claims 1 to 6, characterized in that, The vehicle includes: The vehicle frame, with the storage box mounted on top of the frame; Drive wheels are rotatably mounted on the frame and located on both sides of the frame along the width direction of the frame; The towing wheels are rotatably mounted on the frame and located on both sides of the frame along the width direction of the frame. The towing wheels on both sides and the drive wheels on both sides are located at the four corners of the frame, respectively. Tracks are respectively fitted onto the drive wheel and the towing wheel on the same side.

8. The power cable withstand voltage testing device according to claim 7, characterized in that, The vehicle also includes: The second motor is mounted on the frame and located on both sides of the frame along the width direction of the frame. The rotating ends of the second motor on both sides are respectively connected to the drive wheels on both sides.

9. The power cable withstand voltage testing device according to claim 7, characterized in that, The vehicle also includes: A support rod is installed between the frame and the storage box along the height direction of the vehicle.

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