Hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position

Abstract

The application discloses a hydraulic multipurpose high-pressure test rod with adjustable position of connecting clamp, which comprises a telescopic rod group, a hydraulic device, a connecting clamp and a flow guide device. The telescopic rod group comprises a fixed rod and a movable rod, and the fixed rod is slidably sleeved with the movable rod. The hydraulic device is fixed on the fixed rod and connected with the movable rod, and is used for driving the movable rod to slide on the fixed rod. The connecting clamp is fixed on the movable rod and used for being hung on a lead wire of a test device. The flow guide device is used for transmitting current and comprises a lead wire and a test wire adapter box. The first end of the lead wire is electrically connected with the connecting clamp, and the second end of the lead wire is electrically connected with the test wire adapter box. The test wire adapter box is fixed on the fixed rod and used for being electrically connected with a test instrument and a grounding wire respectively. Compared with the prior art, the hydraulic multipurpose high-pressure test rod with adjustable position of connecting clamp can realize length change through a hydraulic telescopic structure, can improve durability and prolong service life.

Description

Technical Field

[0001] This invention relates to the field of high-voltage primary equipment testing technology, and in particular to a hydraulic multi-purpose high-voltage test rod with adjustable connecting clamp position. Background Technology

[0002] Routine and specialized tests on high-voltage primary equipment are crucial for verifying its insulation performance, playing a vital role in the safe and stable operation of the equipment under test and even the entire power system. During most high-voltage tests, it is inevitable to connect the equipment under test's leads to the testing instruments to complete the test; and grounding the equipment under test's leads ensures the safety of the testing personnel.

[0003] For high-voltage primary equipment with high voltage levels that is difficult to disassemble, its location is generally high above the ground, necessitating the use of a high-voltage test rod. High-voltage test rods are typically composed of multiple connected sections, including telescopic and interlocking types. For telescopic high-voltage test rods, adjacent sections slide together, which reduces friction over time. This can cause the rods to lose their relative position after deployment, or even fall back under gravity, affecting their lifespan. For interlocking high-voltage test rods, adjacent sections are threaded together, which can easily lead to thread stripping after prolonged use, also impacting lifespan. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position, which achieves its own length change through a hydraulic telescopic structure, thereby extending its service life.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention discloses a hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position, comprising:

[0007] A telescopic rod assembly, comprising a fixed rod and a movable rod, wherein the fixed rod and the movable rod are slidably sleeved together.

[0008] A hydraulic device fixed to the fixed rod, the hydraulic device being connected to the movable rod, is used to drive the movable rod to slide on the fixed rod;

[0009] A connecting clamp fixed to the movable rod, the connecting clamp being used to attach to the lead wire of the device under test;

[0010] A current-conducting device for transmitting current, the current-conducting device including a lead wire and a test wire adapter box, the first end of the lead wire being electrically connected to the connecting clamp, and the second end of the lead wire being electrically connected to the test wire adapter box; the test wire adapter box is fixed on the fixing rod and is used to electrically connect to the test instrument and the grounding wire respectively.

[0011] Preferably, the hydraulic device is a hydraulic jack.

[0012] Preferably, the connecting clamp includes a clamp support device and a lead wire engaging device; the clamp support device is used to attach to the lead wire of the device under test; the lead wire engaging device includes a first elastic structure and a second elastic structure, the first elastic structure and the second elastic structure elastically abutting each other and both fixed to the clamp support device, so that a limiting space that can be opened and closed is formed between the clamp support device and the lead wire engaging device, the limiting space being used to limit the lead wire of the device under test; when the first elastic structure contacts the second elastic structure, an included angle is formed on both sides of the contact position, the included angle being used to guide the process of the lead wire of the device under test entering and leaving the limiting space.

[0013] Preferably, the first elastic structure includes a first spring and a first spring, and the second elastic structure includes a second spring and a second spring; both the first spring and the second spring are fixed to the clamping support device; the two ends of the first spring are respectively connected to the clamping support device and the first spring to press the first spring against the second spring; the two ends of the second spring are respectively connected to the clamping support device and the second spring to press the second spring against the first spring.

[0014] Preferably, both the first and second springs are arc-shaped springs, and the openings of the first and second springs are far apart from each other.

[0015] Preferably, the clamping support device is hook-shaped, and the first spring and the second spring are respectively fixed on two opposite inner sides of the clamping support device.

[0016] Preferably, the hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position further includes a fixing device, and the connecting clamp and the moving rod are indirectly fixedly connected through the fixing device; the fixing device includes a base and a first panel, the base is fixed to the end of the moving rod away from the hydraulic device, and the base is fixedly connected to the first panel; the connecting clamp further includes a second panel, and the second panel is fixedly connected to the clamp support device; the first panel has a plurality of first mounting holes distributed along a first circumference, and the second panel has a plurality of second mounting holes distributed along a second circumference, the first circumference and the second circumference have the same diameter; the first panel and the second panel are fixedly connected by a plurality of fasteners, each fastener passing through one first mounting hole and one second mounting hole; the first end of the lead wire is electrically connected to the base, so as to be indirectly electrically connected to the connecting clamp through the base.

[0017] Preferably, the test lead adapter box includes a fixed back plate, a clamp connecting plate, a fixed connector, and a clamp engaging component; the fixed back plate is fixed to the fixed rod; the clamp connecting plate is fixed to the fixed back plate; the clamp engaging component is installed on the clamp connecting plate to press the clamp of the test instrument onto the clamp connecting plate; the fixed connector is installed on the clamp connecting plate to press the grounding wire onto the clamp connecting plate; the fixed back plate is provided with a working grounding socket, a voltage electrode socket, and a current electrode socket; the clamp connecting plate, the fixed connector, the working grounding socket, the voltage electrode socket, and the current electrode socket are all electrically connected to the lead wire.

[0018] Preferably, both the fixed rod and the movable rod are hollow insulated rods, and the lead wire is disposed inside the fixed rod and the movable rod.

[0019] The present invention achieves the following technical effects compared to the prior art:

[0020] The adjustable-position hydraulic multi-purpose high-pressure test rod of the present invention can be operated on the ground, avoiding the safety risks associated with working at heights. The adjustable-position hydraulic multi-purpose high-pressure test rod of the present invention uses a hydraulic device to drive the connecting clamp and the moving rod to move synchronously, eliminating the need for locking the relative positions of the fixed rod and the moving rod through friction or threaded structures, thus improving durability. In a preferred embodiment of the present invention, by adjusting the relative angle between the first panel and the second panel, the testing requirements of the test device leads at different angles can be met, ensuring contact between the connecting clamp and the test device leads. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the hydraulic multi-purpose high-pressure test rod with adjustable clamp position in this embodiment;

[0023] Figure 2 This is a schematic diagram of a fixed rod;

[0024] Figure 3 This is a schematic diagram of the test line adapter box;

[0025] Figure 4 This is a schematic diagram of the fixing device;

[0026] Figure 5 This is a schematic diagram of the connecting clamps;

[0027] Explanation of reference numerals in the attached drawings: 1-Hydraulic device; 2-Fixed rod; 3-Moving rod; 4-Fixing device; 5-Connecting clamp; 6-Pressure boosting plate; 7-Pressure relief valve; 8-Test line adapter box; 9-Fixed back plate; 10-Wire clamp connecting plate; 11-Fixed connector; 12-Wire clamp engaging component; 13-Working grounding socket; 14-Voltage pole socket; 15-Current pole socket; 16-Base; 17-Conductive screw; 18-First panel; 19-First mounting hole; 20-Second panel; 21-Second mounting hole; 22-Clamping support device; 23-Spring; 24-Spring. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide a hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position, which achieves its own length change through a hydraulic telescopic structure, thereby extending its service life.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1-5This embodiment provides a hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position, including a telescopic rod assembly, a hydraulic device 1, a connecting clamp 5, and a flow guiding device. The telescopic rod assembly includes a fixed rod 2 and a movable rod 3, with the fixed rod 2 and movable rod 3 slidably sleeved together. In this embodiment, the fixed rod 2 is preferably sleeved on the outside of the movable rod 3. The hydraulic device 1 is fixed to the fixed rod 2 and connected to the movable rod 3, used to drive the movable rod 3 to slide on the fixed rod 2. The connecting clamp 5 is fixed to the movable rod 3 and is used to attach to the lead wire of the device under test. The flow guiding device is used to transmit current and includes a lead wire and a test wire adapter box 8. The first end of the lead wire is electrically connected to the connecting clamp 5, and the second end of the lead wire is electrically connected to the test wire adapter box 8. The test wire adapter box 8 is fixed to the fixed rod 2 and is used to electrically connect to the test instrument and the grounding wire, respectively.

[0032] When in use, the adjustable-position hydraulic multi-purpose high-pressure test rod allows the current on the test equipment's lead wire to pass sequentially through the connecting clamp 5, the lead wire, and the test wire adapter box 8, before being conducted to the test instrument and grounding wire via the test wire adapter box 8. Compared to existing technologies, this embodiment uses a hydraulic device 1 to drive the connecting clamp 5 and the moving rod 3 to move synchronously, eliminating the need to lock the relative positions of the fixed rod 2 and the moving rod 3 through friction or threaded structures, thus extending their service life.

[0033] As a possible example, the hydraulic device 1 is a hydraulic jack. A hydraulic jack typically has a pressure-boosting button 6 and a pressure-relief valve 7. Pressing the pressure-boosting button 6 moves the moving rod 3 a certain distance away from the fixed rod 2, and locks the position of the moving rod 3 after the movement is complete. The movement distance of the moving rod 3 can be controlled by controlling the number of times the pressure-boosting button 6 is pressed. Opening the pressure-relief valve 7 allows the moving rod 3 to move freely. This hydraulic device 1 allows for real-time manual adjustment of the position of the moving rod 3 according to actual needs, and the operation is simple and convenient.

[0034] As one possible example, the connecting clamp 5 includes a clamp support device 22 and a lead wire engaging device. The clamp support device 22 is used to attach to the lead wire of the device under test. The lead wire engaging device includes a first elastic structure and a second elastic structure. The first elastic structure and the second elastic structure elastically abut against each other and are both fixed to the clamp support device 22, so that a limiting space that can be opened and closed is formed between the clamp support device 22 and the lead wire engaging device, and the limiting space is used to limit the lead wire of the device under test. When the first elastic structure and the second elastic structure are in contact, an included angle is formed on both sides of the contact position, and the included angle is used to guide the process of the lead wire of the device under test entering and leaving the limiting space. When the lead wire of the device under test enters the limiting space, the lead wire of the device under test moves toward the clamp support device 22 and squeezes the first elastic structure and the second elastic structure, so that the first elastic structure and the second elastic structure are separated by a certain distance. After the lead wire of the device under test enters the limiting space, the first elastic structure and the second elastic structure reset and remain in contact, so as to restrict the lead wire of the device under test within the limiting space.

[0035] As one possible example, the first elastic structure includes a first spring and a first elastic piece, and the second elastic structure includes a second spring and a second elastic piece. Both the first and second springs are fixed to the clamping support device 22 and are both capable of elastic deformation. The two ends of the first spring are respectively connected to the clamping support device 22 and the first spring to press the first spring against the second spring. The two ends of the second spring are respectively connected to the clamping support device 22 and the second spring to press the second spring against the first spring. However, the actual implementation is not limited to this. For example, the first and second springs can also be non-elastic pieces, with one end hinged to the clamping support device 22, and the two non-elastic pieces are reset by the first and second springs. As another example, the first elastic structure may not include the first and second springs, relying on the elastic reset of the first and second springs themselves.

[0036] As a possible example, both the first and second springs are curved springs, with the openings of the first and second springs being far apart. The curvature of the curved springs ensures that when the first and second elastic structures come into contact, an angle is formed on both sides of the contact point.

[0037] As one possible example, the clamp support device 22 is hook-shaped, with the first and second spring pieces respectively fixed to two opposite inner surfaces of the clamp support device 22.

[0038] As a possible example, the hydraulic multi-purpose high-pressure test bar with adjustable clamp position also includes a fixing device 4, through which the connecting clamp 5 and the moving rod 3 are indirectly fixedly connected. The fixing device 4 includes a base 16 and a first panel 18. The base 16 is fixed to the end of the moving rod 3 away from the hydraulic device 1, and is fixedly connected to the first panel 18. The connecting clamp 5 also includes a second panel 20, which is fixedly connected to a clamp support device 22. The first panel 18 has a plurality of first mounting holes 19 distributed along a first circumference, and the second panel 20 has a plurality of second mounting holes 21 distributed along a second circumference. The diameters of the first and second circumferences are the same. The first panel 18 and the second panel 20 are fixedly connected by a plurality of fasteners (e.g., screws), each fastener passing through one first mounting hole 19 and one second mounting hole 21. The first end of a lead wire is electrically connected to the base 16 to indirectly connect to the connecting clamp 5 via the base 16. When it is necessary to adjust the relative angle between the first panel 18 and the second panel 20, remove the fasteners, then rotate the first panel 18 and the second panel 20 to the appropriate angle so that the first circumference is aligned with the second circumference and the first mounting hole 19 is aligned with the second mounting hole 21. Then reinstall the fasteners. Since the angle of the connecting clamp 5 is adjustable, it can meet the testing requirements of the test device leads at different angles.

[0039] As one possible example, the test lead adapter box 8 includes a fixed back plate 9, a clamp connecting plate 10, a fixed terminal block 11, and a clamp engaging component 12. The fixed back plate 9 is fixed to the fixed rod 2. The clamp connecting plate 10 is fixed to the fixed back plate 9. The clamp engaging component 12 is mounted on the clamp connecting plate 10 and is used to press the clamps of the test instrument onto the clamp connecting plate 10. The portion of the clamp engaging component 12 that contacts the clamps of the test instrument can be serrated. The fixed terminal block 11 is mounted on the clamp connecting plate 10 and can be a screw, used to press the grounding conductor onto the clamp connecting plate 10. The fixed back plate 9 has a working grounding socket 13, a voltage electrode socket 14, and a current electrode socket 15. The clamp connecting plate 10, the fixed terminal block 11, the working grounding socket 13, the voltage electrode socket 14, and the current electrode socket 15 are all electrically connected to the lead wires. The working grounding socket 13, voltage pole socket 14 and current pole socket 15 are conventional structures in the art, and are used to connect different types of wires, which will not be described in detail here.

[0040] As a possible example, the test line adapter box 8 also includes a box body, a fixed back plate 9, a wire clamp connecting plate 10, a fixed connector 11, and a wire clamp engaging component 12, all located inside the box body, and the box body is fixedly connected to the fixed back plate 9.

[0041] As a possible example, both the fixed rod 2 and the movable rod 3 are hollow insulated rods, with the lead wires located inside the fixed rod 2 and the movable rod 3 to improve the safety of the test process.

[0042] As one possible example, the fixing device 4 also includes a conductive screw 17, and the base 16 is fixed to the end of the moving rod 3 away from the hydraulic device 1 by the conductive screw 17. A first end of a lead wire is electrically connected to the conductive screw 17, and a second end of the lead wire is electrically connected to an embedded screw mounted on the fixing back plate 9.

[0043] As a possible example, the fixed rod 2, the movable rod 3, the box body, and the fixed back plate 9 are all made of fiberglass epoxy resin, while the wire clamp connecting plate 10, the wire clamp engaging component 12, the fixed connector 11, the base 16, the conductive screw 17, the first panel 18, the second panel 20, the clamp support device 22, and the lead wire engaging device are all made of 304 stainless steel.

[0044] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position, characterized in that, include: A telescopic rod assembly, comprising a fixed rod and a movable rod, wherein the fixed rod and the movable rod are slidably sleeved together. A hydraulic device fixed to the fixed rod, the hydraulic device being connected to the movable rod, is used to drive the movable rod to slide on the fixed rod; A connecting clamp fixed to the movable rod, the connecting clamp being used to attach to the lead wire of the device under test; A current-carrying device for transmitting current, the current-carrying device including a lead wire and a test wire adapter box, wherein a first end of the lead wire is electrically connected to the connecting clamp and a second end of the lead wire is electrically connected to the test wire adapter box; The test line adapter box is fixed on the fixing rod and is used to electrically connect to the test instrument and the grounding wire, respectively. The connecting clamp includes a clamp support device and a lead wire engaging device; the clamp support device is used to attach to the lead wire of the device under test; the lead wire engaging device includes a first elastic structure and a second elastic structure, the first elastic structure and the second elastic structure elastically abutting each other and both fixed to the clamp support device, so that a limiting space that can be opened and closed is formed between the clamp support device and the lead wire engaging device, the limiting space being used to limit the lead wire of the device under test; when the first elastic structure contacts the second elastic structure, an included angle is formed on both sides of the contact position, the included angle being used to guide the process of the lead wire of the device under test entering and leaving the limiting space; The adjustable hydraulic multi-purpose high-pressure test rod also includes a fixing device, through which the connecting clamp and the moving rod are indirectly fixedly connected; the fixing device includes a base and a first panel, the base is fixed to the end of the moving rod away from the hydraulic device, and the base is fixedly connected to the first panel; the connecting clamp also includes a second panel, which is fixedly connected to the clamp support device; the first panel has a plurality of first mounting holes distributed along a first circumference, and the second panel has a plurality of second mounting holes distributed along a second circumference, the first circumference and the second circumference having the same diameter; the first panel and the second panel are fixedly connected by a plurality of fasteners, each fastener passing through one first mounting hole and one second mounting hole; the first end of the lead wire is electrically connected to the base, so as to be indirectly electrically connected to the connecting clamp through the base.

2. The hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position according to claim 1, characterized in that, The hydraulic device is a hydraulic jack.

3. The hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position according to claim 1, characterized in that, The first elastic structure includes a first spring and a first spring, and the second elastic structure includes a second spring and a second spring; both the first spring and the second spring are fixed to the clamping support device; the two ends of the first spring are respectively connected to the clamping support device and the first spring to press the first spring against the second spring; the two ends of the second spring are respectively connected to the clamping support device and the second spring to press the second spring against the first spring.

4. The hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position according to claim 3, characterized in that, Both the first and second springs are arc-shaped springs, and the openings of the first and second springs are far apart from each other.

5. The hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position according to claim 4, characterized in that, The clamp support device is hook-shaped, and the first spring and the second spring are respectively fixed on two opposite inner sides of the clamp support device.

6. The hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position according to claim 1, characterized in that, The test lead adapter box includes a fixed back plate, a clamp connecting plate, a fixed connector, and a clamp engaging component. The fixed back plate is fixed to the fixed rod. The clamp connecting plate is fixed to the fixed back plate. The clamp engaging component is installed on the clamp connecting plate to press the clamp of the test instrument onto the clamp connecting plate. The fixed connector is installed on the clamp connecting plate to press the grounding wire onto the clamp connecting plate. The fixed back plate is provided with a working grounding socket, a voltage electrode socket, and a current electrode socket. The clamp connecting plate, the fixed connector, the working grounding socket, the voltage electrode socket, and the current electrode socket are all electrically connected to the lead wire.

7. The hydraulic multi-purpose high-pressure test rod with adjustable connecting clamp position according to claim 1, characterized in that, Both the fixed rod and the movable rod are hollow insulated rods, and the lead wire is located inside the fixed rod and the movable rod.

Images