Loop resistance test auxiliary device for holding pole wire clamp

Abstract

The invention discloses a loop resistance test auxiliary device for a derrick wire clamp, the derrick wire clamp comprises a derrick and a line bank, a conducting rod is arranged in the derrick, the loop resistance test auxiliary device comprises a first rotating arm and a second rotating arm, a first end of the first rotating arm is in coaxial transmission connection with a first end of the second rotating arm, and a second end of the first rotating arm is in coaxial transmission connection with a second end of the second rotating arm; the first adjusting assembly is rotationally connected with the second end of the first rotating arm, and the second adjusting assembly is rotationally connected with the second end of the second rotating arm; the connecting plate assembly is arranged at the end, away from the first rotating arm, of the first adjusting assembly, and the end, away from the first adjusting assembly, of the connecting plate assembly is in contact connection with the conducting rod; and the clamping assembly is arranged at one end, far away from the second rotating arm, of the second adjusting assembly, and the clamping assembly is configured to clamp the line bank. The device is suitable for holding pole wire clamps of different models, so that the loop resistance test is more flexible, the test wire clamp does not need to be replaced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of resistance testing technology, and in particular to an auxiliary device for testing the loop resistance of a pole clamp. Background Technology

[0002] As a core hardware component connecting the conductive rods of transformers, current transformers, and other equipment to conductors or busbars, the increased contact resistance of pole clamps is a major cause of overheating defects. Currently, the standard equipment for measuring loop resistance is a loop resistance tester, which uses a pair of test clamps (usually large-mouth clamps) to hold the loop under test at both ends. However, this mature technology has revealed significant limitations when applied to pole clamps.

[0003] Pole clamps are typically designed to completely enclose the internal conductive rod, with their main structure being a hollow cylinder. This structure makes it impossible for standard alligator clips (such as those used with standard loop resistance testers) to effectively grip the conductive rod. The size and shape of the clamp jaws are difficult to match the tip of the enclosed conductive rod, leading to poor contact, easy slippage, or even the inability to establish a valid electrical connection. To address this issue, one approach in the industry is to customize custom-shaped test clamps for specific pole clamp models. However, this is essentially a case-by-case solution, requiring the design and manufacture of tools for each clamp specification, resulting in high costs, poor versatility, and extreme inconvenience in field transport and use. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, the present invention provides an auxiliary device for testing the loop resistance of a pole clamp. The cooperation of the first rotating arm and the first adjusting component, and the cooperation of the second rotating arm and the second adjusting component, allows the connecting plate assembly to abut against the conductive rod inside the pole, and at the same time allows the clamping assembly to clamp the terminal block to form a loop. This makes the testing of the loop resistance of the pole clamp more flexible, eliminates the need to change the test clamp according to the model of the pole clamp, and reduces manufacturing costs.

[0006] Specifically, the following technical solutions are included: This invention provides an auxiliary device for testing the loop resistance of a pole clamp, the pole clamp comprising a pole and a terminal block, wherein a conductive rod is provided inside the pole, and the auxiliary device for testing the loop resistance includes: A first rotating arm and a second rotating arm, wherein the first end of the first rotating arm and the first end of the second rotating arm are coaxially connected. A first adjustment component and a second adjustment component, wherein the first adjustment component is rotatably connected to the second end of the first rotating arm, and the second adjustment component is rotatably connected to the second end of the second rotating arm; A connecting plate assembly is disposed at the end of the first adjustment assembly away from the first rotating arm, and the end of the connecting plate assembly away from the first adjustment assembly is in contact with the conductive rod. A clamping assembly is disposed at the end of the second adjusting assembly away from the second rotating arm, the clamping assembly being configured to clamp the terminal block.

[0007] Optionally, the first rotating arm and the second rotating arm have the same structure, both including: The rotating arm body has a first connector at the first end, a first threaded hole at the center of the first connector, and a second connector at the second end. The second connector has a receiving groove inside and a notch on the second connector, which communicates with the receiving groove.

[0008] Optionally, the first adjustment component and the second adjustment component have the same structure, both including: A ball joint is connected to the second connector, and the ball joint is configured to move and rotate within the receiving groove; A connecting cylinder is disposed at one end of the spherical joint, and the connecting cylinder is clearance-fitted with the notch; A connecting square post is provided at the end of the connecting cylinder away from the ball joint, and the connecting square post has a cylindrical blind hole inside.

[0009] Optionally, a second threaded hole is provided on the side wall of the connecting column, and the first adjustment assembly and the second adjustment assembly further include: The first clamping knob is threadedly connected to the second threaded hole, and the second threaded hole communicates with the cylindrical blind hole.

[0010] Optionally, the connecting plate assembly includes: A first connector is connected to the first adjustment component, and the first connector is configured to extend and retract within the first adjustment component; The second connector is movably connected to the first connector, and the second connector abuts against the conductive rod.

[0011] Optionally, the first connector includes: A pivot is movably connected to the first adjustment component, and the pivot is configured to move within the first adjustment component; The first connecting block is connected to the end of the rotating shaft away from the first adjusting component, and the first connecting block is provided with a first through groove, the second connecting head is disposed in the first through groove, and the first connecting block is provided with a third threaded hole. The second clamping knob is threadedly connected to the third threaded hole, which is connected to the first through groove.

[0012] Optionally, the second connector includes: A copper plate is movably connected to the first connector, and a connecting groove is provided at the end of the copper plate away from the first connector. The test connection line is fixedly connected to the copper plate, and a test connector is provided at the end of the test connection line away from the copper plate. The test connector is connected to a resistance testing instrument. The contact test cone includes a cylindrical section and a conical section, wherein the cylindrical section is disposed in the connecting groove and the conical section is in contact with the conductive rod.

[0013] Optionally, the second connector further includes a copper spring, which is connected to the end of the cylindrical section away from the copper plate, and the copper spring is sleeved on the conical section.

[0014] Optionally, the clamping assembly includes: A connecting shaft is movably connected to the second adjustment assembly, and the connecting shaft is configured to move within the second adjustment assembly; The second connecting block is connected to the end of the connecting shaft away from the second adjusting component, and the second connecting block is provided with a second through groove, the terminal block is disposed in the second through groove, and the second connecting block is provided with a fourth threaded hole; The third clamping knob is threadedly connected to the fourth threaded hole, which is connected to the second through groove.

[0015] Optionally, the circuit resistance testing auxiliary device further includes a locking knob, which passes through a first threaded hole on the two rotating arm bodies.

[0016] The present invention provides an auxiliary device for testing the loop resistance of a pole clamp. The device includes a first rotating arm and a second rotating arm stacked together, with one end of each arm coaxially rotating to form various angles, facilitating adaptation to different connection angles between the pole and the terminal block. Simultaneously, a first adjusting component is connected at both ends to the first rotating arm and a connecting plate assembly, respectively, allowing adjustment of the length and angle of the connecting plate assembly to ensure contact between the connecting plate assembly and the conductive rod inside the pole. A second adjusting component is connected at both ends to the second rotating arm and a clamping assembly, allowing adjustment of the length and angle of the clamping assembly to clamp the terminal block. After clamping the terminal block with test clamps, the device is connected to a resistance testing instrument. The adjustable structure of this loop resistance testing auxiliary device makes it suitable for various types of pole clamps, offering greater flexibility and good versatility while ensuring reliable connection. This reduces manufacturing costs and improves enterprise economics.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0019] Figure 1 This is a schematic diagram of a loop resistance testing auxiliary device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of an auxiliary device for loop resistance testing according to an embodiment of the present invention, showing one possible angle of use. Figure 3 A schematic diagram of another usage angle of the circuit resistance testing auxiliary device without copper spring according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the usage state of the auxiliary device for testing the resistance of the copper spring circuit according to an embodiment of the present invention.

[0020] in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows: 100. Auxiliary device for circuit resistance testing; 110. First rotating arm; 111. Rotating arm body; 112. First connector; 113. Second connector; 120. Second rotating arm; 130. First adjustment assembly; 131. Ball joint; 132. Connecting cylinder; 133. Connecting square column; 134. First clamping knob; 140. Second adjustment assembly; 150. Connecting plate assembly; 151. Rotating shaft; 152. First connecting block; 153. Second clamping knob; 154. Copper plate; 155. Test connecting wire; 156. Test connector; 157. Contact test cone; 158. Copper spring; 160. Clamping assembly; 161. Connecting shaft; 162. Second connecting block; 163. Third clamping knob; 170. Locking knob; 200. Test clamp; 300. Resistance testing instrument; 410. Holding rod; 420. Terminal block; 430. Conductive rod. Detailed Implementation

[0021] 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, not all, of the embodiments of the present invention. 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.

[0022] Before providing a further detailed description of the embodiments of the present invention, the directional terms used in the embodiments of the present invention, such as "upper part", "lower part" and "side part", are not intended to limit the scope of protection of the present invention.

[0023] To make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0024] like Figures 1 to 4 As shown, one embodiment of the present invention provides an auxiliary device for loop resistance testing of a pole clamp. The pole clamp includes a pole 410 and a terminal block 420. A conductive rod 430 is provided inside the pole 410. The loop resistance testing auxiliary device 100 includes: A first rotating arm 110 and a second rotating arm 120 are connected coaxially at the first end of the first rotating arm 110 and the first end of the second rotating arm 120. A first adjustment assembly 130 and a second adjustment assembly 140 are provided. The first adjustment assembly 130 is rotatably connected to the second end of the first rotating arm 110, and the second adjustment assembly 140 is rotatably connected to the second end of the second rotating arm 120. The connecting plate assembly 150 is disposed at the end of the first adjusting assembly 130 away from the first rotating arm 110, and the end of the connecting plate assembly 150 away from the first adjusting assembly 130 is in contact with the conductive rod 430. The clamping assembly 160 is located at the end of the second adjusting assembly 140 away from the second rotating arm 120, and the clamping assembly 160 is configured on the clamping terminal block 420.

[0025] The loop resistance testing auxiliary device 100 includes a first rotating arm 110 and a second rotating arm 120 stacked together. One end of the first rotating arm 110 and the second rotating arm 120 can be coaxially rotated, allowing the first rotating arm 110 and the second rotating arm 120 to form various angles to accommodate different connection angles of the support rod 410 and the terminal block 420. Simultaneously, the two ends of the first adjusting component 130 are respectively connected to the first rotating arm 110 and the connecting plate assembly 150. The first adjusting component 130 can adjust the length and angle of the connecting plate assembly 150, ultimately enabling the connecting plate assembly 150 to engage with the conductive rod 43 inside the support rod 410. The second adjusting component 140 is connected to the second rotating arm 120 and the clamping component 160 at both ends. The second adjusting component 140 can adjust the length and angle of the clamping component 160 so that the clamping component 160 clamps the terminal block 420. After the terminal block 420 is clamped by the test clamp 200, it is connected to the resistance test instrument 300. The structure of the loop resistance test auxiliary device 100 of this application can be adjusted so that the loop resistance test auxiliary device 100 is applicable to various types of pole clamps, making it more flexible to use. Under the premise of ensuring connection reliability, it has good versatility, reduces manufacturing costs, and improves the economic efficiency of enterprises.

[0026] In one feasible embodiment, the first rotating arm 110 and the second rotating arm 120 have the same structure, both including: The rotating arm body 111 has a first connector 112 at its first end, a first threaded hole at the center of the first connector 112, and a second connector 113 at its second end. The second connector 113 has a receiving groove inside and a notch on the connector, which communicates with the receiving groove.

[0027] Since the mounting angles of the rod 410 and terminal block 420 differ in different models of rod clamps, the locking knob 170 passes through the first threaded hole on the two rotating arm bodies 111. This allows the first rotating arm 110 and the second rotating arm 120 to be stacked and opened at different angles, making it suitable for different models of rod clamps and improving the applicability of the loop resistance testing auxiliary device 100. After placing the first rotating arm 110 and the second rotating arm 120 in the desired position, the locking knob 170 is used to lock them, improving the stability of the angle between the first rotating arm 110 and the second rotating arm 120. Furthermore, when it is necessary to take it out, the first rotating arm 110 and the second rotating arm 120 can be adjusted to overlap, i.e., the angle is 0°, for easy storage and carrying.

[0028] In one feasible implementation, the first adjustment component 130 and the second adjustment component 140 have the same structure, both including: The ball joint 131 is connected to the second connector 113 and is configured to move and rotate within the receiving groove; A connecting cylinder 132 is located at one end of a ball joint 131, and the connecting cylinder 132 is fitted with the notch with a clearance. A connecting square post 133 is located at the end of the connecting cylindrical post 132 away from the ball joint 131, and a cylindrical blind hole is provided inside the connecting square post 133.

[0029] The ball joint 131, when matched with the receiving groove, allows the entire first adjustment assembly 130 to rotate within the second connector 113 of the first rotating arm 110, while the second adjustment assembly 140 can rotate within the second connector 113 of the second rotating arm 120. This further enhances the flexibility of the loop resistance testing auxiliary device 100, making it suitable for different types of pole clamps.

[0030] It should be noted that the connection between the ball joint 131 and the connecting square column 133 is achieved by connecting the cylindrical column 132, which facilitates the rotation of the connecting square column 133 with the ball joint 131 and avoids interference. The notch on the second connector 113 further expands the rotation angle of the ball joint 131.

[0031] In one feasible embodiment, a second threaded hole is provided on the side wall of the connecting square post 133, and the first adjusting assembly 130 and the second adjusting assembly 140 further include: The first clamping knob 134 is threadedly connected to the second threaded hole, and the second threaded hole is connected to the cylindrical blind hole.

[0032] The connecting square column 133 has a cylindrical blind hole. The cylindrical blind hole allows the subsequent connecting plate assembly 150 to connect with it. After the first pressing knob 134 is screwed into the second threaded hole, it abuts against part of the connecting plate assembly 150, thereby fixing the position of the connecting plate assembly 150.

[0033] In one possible implementation, the connection plate assembly 150 includes: A first connector is connected to a first adjustment component 130, and the first connector is configured to extend and retract within the first adjustment component 130; The second connector is movably connected to the first connector and abuts against the conductive rod 430.

[0034] The connecting plate assembly 150 includes a first connector and a second connector. At least part of the first connector is set in a cylindrical blind hole, and the connection height of the entire connecting plate is fixed by a first clamping knob 134 to facilitate the use of different types of pole clamps. The two ends of the second connector are respectively connected to the first connector and the conductive rod 430 in the pole 410.

[0035] In one feasible implementation, the first connector includes: A rotating shaft 151 is movably connected to a first adjusting assembly 130, and the rotating shaft 151 is configured to move within the first adjusting assembly 130; The first connecting block 152 is connected to the end of the rotating shaft 151 away from the first adjusting component 130, and the first connecting block 152 is provided with a first through groove, the second connecting head is disposed in the first through groove, and the first connecting block 152 is provided with a third threaded hole. The second clamping knob 153 is threadedly connected to the third threaded hole, which is connected to the first through groove.

[0036] The rotating shaft 151 is matched with the cylindrical blind hole, usually with a clearance fit, which facilitates the movement of the rotating shaft 151 in the cylindrical blind hole. The rotating shaft 151 can be fixed by the first clamping knob 134 passing through the second threaded hole, so that the contact test cone 157 of the subsequent second leveling head can abut against the conductive rod 430 in the holding rod 410.

[0037] It should be noted that the second connecting block 162 has a first through groove on the side opposite to the rotating shaft 151. The first connecting head and the second connecting head are connected through the first through groove. Similarly, after the second clamping knob 153 passes through the third threaded hole, it is tightened to abut against the second connecting head within the first through groove, thus fixing the angle of the second connecting head. It is understood that the second connecting head can swing within the first through groove to accommodate different types of pole clamps, such as... Figure 2 and Figure 3 As shown, this improves the flexibility and versatility of the loop resistance testing auxiliary device 100.

[0038] In one feasible implementation, the second connector includes: The copper plate 154 is movably connected to the first connector, and the end of the copper plate 154 away from the first connector is provided with a connecting groove. The test connection line 155 is fixedly connected to the copper plate 154, and the end of the test connection line 155 away from the copper plate 154 is provided with a test connector 156, which is connected to the resistance test instrument 300. The contact test cone 157 includes a cylindrical section and a conical section. The cylindrical section is disposed in the connecting groove, and the conical section is in contact with the conductive rod 430.

[0039] Specifically, a copper plate 154 is inserted into the first through slot to connect the second connector to the first connector. A second clamping knob 153 fixes the swing angle of the copper plate 154 within the first connecting block 152. A test connection wire 155 and a test connector 156 connect the copper plate 154 to the resistance testing instrument 300, forming a circuit with the subsequent connection between the test clamp 200 and the resistance testing instrument 300, thus enabling resistance measurement of the conductive rod 430.

[0040] It should be noted that the contact test cone 157 is set in the connecting groove of the copper plate 154. The contact test cone 157 abuts against the conductive rod 430, and then the clamping assembly 160 clamps the terminal block 420. Finally, it is connected to the resistance testing instrument 300 to form a circuit. Figure 4 As shown, the resistance of the conductive rod 430 is tested.

[0041] In one possible implementation, the second connector further includes a copper spring 158, which is connected to the end of the cylindrical section away from the copper plate 154, and the copper spring 158 is sleeved on the conical section.

[0042] It should be noted that the connection between the contact test cone 157 and the copper plate 154 can be achieved through the copper spring 158. During testing, the contact test cone 157 abuts against the conductive rod 430, and the copper spring 158 also abuts against the conductive rod 430. Under the action of the conductive rod 430, the copper spring 158 is compressed, and the copper spring 158 will apply a reverse force to the contact test cone 157, thus achieving the abutment connection between the contact test cone 157 and the conductive rod 430. This improves the reliability of the connection between the loop resistance testing auxiliary device 100 and the conductive rod 430, and enhances the reliability and stability of the resistance test.

[0043] In one possible implementation, the clamping assembly 160 includes: The connecting shaft 161 is movably connected to the second adjustment assembly 140, and the connecting shaft 161 is configured to move within the second adjustment assembly; The second connecting block 162 is connected to the end of the connecting shaft 161 away from the second adjusting component 140, and the second connecting block 162 is provided with a second through groove, the terminal block 420 is disposed in the second through groove, and the second connecting block 162 is provided with a fourth threaded hole. The third clamping knob 163 is threadedly connected to the fourth threaded hole, which is connected to the second through groove.

[0044] Specifically, the connecting shaft 161 is fitted with the cylindrical blind hole on the second adjusting component 140 through a clearance engagement. After being tightened by the first clamping knob 134, it abuts against the connecting shaft 161, restricting the position of the connecting shaft 161 in the cylindrical blind hole, thereby realizing the adjustment of the position of the clamping component 160 and further adapting to different models of pole clamps.

[0045] It should be noted that the second connecting block 162 has a second through groove on the side opposite to the connecting shaft 161. The terminal block 420 is set in the second through groove, and the second terminal block 420 can swing within the second through groove, further improving the flexibility of the circuit resistance testing auxiliary device 100. After adjusting the position of the clamp on the rod, that is, after the terminal block 420 is located in the second through groove and the contact test cone 157 abuts against the conductive rod 430 in the rod 410, the third clamping knob 163 passes through the fourth threaded hole and abuts against the terminal plate. At this time, the terminal block 420 that is exposed outside the second connecting block 162 is clamped by the test clamp 200, and at the same time, the test clamp 200 and the other interface of the resistance testing instrument 300 are connected by a wire, thus forming a circuit, such as Figure 4 As shown, this enables the measurement of the resistance of the conductive rod 430 inside the pole clamp.

[0046] This application configures the loop resistance testing auxiliary device 100 into two branches (a first rotating arm 110 and a second rotating arm 120), thereby enabling connections to the conductive rod 430 and the terminal block 420 within the support rod 410, respectively, eliminating the need for manual support and improving the reliability and stability of the resistance test of the conductive rod 430. Simultaneously, the loop resistance testing auxiliary device 100 is configured as a multi-section structure with interconnected sections, such as the first rotating arm 110 and the first adjusting component 130, the first adjusting component 130 and the first connector, and the first and second connectors. This allows the loop resistance testing auxiliary device 100 to perform clamping tests on various support rod clamps, overcoming the shortcomings of poor versatility of traditional standard or custom clamps. Furthermore, by placing a spring between the contact test cone 157 and the copper plate 154, continuous and stable pressure is provided for the contact between the contact test cone 157 and the conductive rod 430, effectively ensuring the reliability of the electrical connection and thus obtaining accurate and true loop resistance test results. The structural design of this application eliminates the need for prolonged manual fixing by personnel, improving the safety and efficiency of the testing site.

[0047] Understandably, using copper for the connection test connector 156 results in lower resistance, reducing the impact of resistance factors. The first connecting block 152 and the second connecting block 162 are made of insulating material, such as plastic or rubber. Other components not specifically mentioned can be made of aluminum alloy, which is lightweight yet possesses a certain strength and corrosion resistance.

[0048] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "a plurality" refers to two or more unless otherwise expressly defined.

[0049] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An auxiliary device for loop resistance test of a guyed pole clamp, the guyed pole clamp comprising a guyed pole and a wire bus, the guyed pole having a conductive pole arranged therein, characterized in that, The circuit resistance test auxiliary device comprises: A first rotating arm and a second rotating arm, a first end of the first rotating arm and a first end of the second rotating arm are coaxially connected, A first adjusting assembly and a second adjusting assembly, the first adjusting assembly is rotationally connected with a second end of the first rotating arm, and the second adjusting assembly is rotationally connected with a second end of the second rotating arm; A connecting plate assembly is arranged at an end of the first adjusting assembly away from the first rotating arm, and an end of the connecting plate assembly away from the first adjusting assembly is in contact with the conductive rod; A clamping assembly is arranged at an end of the second adjusting assembly away from the second rotating arm, and the clamping assembly is configured to clamp the wiring panel.

2. The return circuit resistance test aid for a pole line clamp of claim 1, wherein, The first rotating arm and the second rotating arm are structurally identical, and each comprises: A rotating arm body, a first end of the rotating arm body is provided with a first connecting piece, a first threaded hole is arranged at the center of the first connecting piece, a second end of the rotating arm body is provided with a second connecting piece, an accommodation groove is arranged in the second connecting piece, an opening is arranged on the second connecting piece, and the opening is in communication with the accommodation groove.

3. The return circuit resistance test aid for a pole line clamp of claim 2 wherein, The first adjusting assembly and the second adjusting assembly are structurally identical, and each comprises: A spherical joint connected with the second connecting piece, and the spherical joint is configured to move and rotate in the accommodation groove; A connecting cylinder is arranged at one end of the spherical joint, and the connecting cylinder is in clearance fit with the opening; A connecting square column is arranged at an end of the connecting cylinder away from the spherical joint, and a cylindrical blind hole is arranged in the connecting square column.

4. The return circuit resistance test aid for a pole line clamp of claim 3 wherein, A second threaded hole is arranged on the side wall of the connecting square column, and the first adjusting assembly and the second adjusting assembly further comprise: A first compression knob is in threaded connection with the second threaded hole, and the second threaded hole is in communication with the cylindrical blind hole.

5. The return circuit resistance test aid for a pole line clamp of claim 1 wherein, The connecting plate assembly comprises: A first connecting head connected with the first adjusting assembly, and the first connecting head is configured to be telescopic in the first adjusting assembly; A second connecting head movably connected with the first connecting head, and the second connecting head is in abutting connection with the conductive rod.

6. The return circuit resistance test aid for a pole line clamp of claim 5 wherein, The first connecting head comprises: A rotating shaft movably connected with the first adjusting assembly, and the rotating shaft is configured to move in the first adjusting assembly; A first connecting block connected with an end of the rotating shaft away from the first adjusting assembly, a first through groove is arranged on the first connecting block, the second connecting head is arranged in the first through groove, a third threaded hole is arranged on the first connecting block; A second compression knob in threaded connection with the third threaded hole, and the third threaded hole is in communication with the first through groove.

7. The return circuit resistance test aid for a pole line clamp of claim 5 wherein, The second connecting head comprises: A copper plate movably connected with the first connecting head, an end of the copper plate away from the first connecting head is provided with a connecting groove; A test connecting line fixedly connected with the copper plate, an end of the test connecting line away from the copper plate is provided with a test connecting head, and the test connecting head is connected with a resistance testing instrument; A contact test cone head comprising a cylindrical segment and a conical segment, the cylindrical segment is arranged in the connecting groove, and the conical segment is in abutting connection with the conductive rod.

8. The return circuit resistance test aid for a pole line clamp of claim 7 wherein, The second connecting head further comprises a copper spring connected with one end of the cylindrical segment away from the copper plate, and the copper spring is sleeved on the conical segment.

9. The return circuit resistance test aid for a pole line clamp of claim 1 wherein, The clamping assembly comprises: A connecting shaft is movably connected with the second adjusting assembly, and the connecting shaft is configured to move in the second adjusting assembly; A second connecting block is connected with one end of the connecting shaft away from the second adjusting assembly, and a second through slot is arranged on the second connecting block, the wiring strip is arranged in the second through slot, and a fourth threaded hole is arranged on the second connecting block; A third pressing knob is threadedly connected with the fourth threaded hole, and the fourth threaded hole is in communication with the second through slot.

10. The return circuit resistance test aid for a pole line clamp of claim 2 wherein, The loop resistance test auxiliary device further comprises a locking knob penetrating through the first threaded holes on the two rotary arm bodies.

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