Electric wire and cable conductor direct current resistance detection auxiliary device

Abstract

The utility model discloses a wire and cable conductor direct current resistance detection auxiliary device, belongs to the wire and cable detection equipment technical field, the constant temperature and humidity chamber is used for storing to-be-tested samples, the workbench is provided with a clamping mechanism, the clamping mechanism comprises a slide rail, a fixed clamping piece and a movable clamping piece, the movable clamping piece is in sliding fit with the slide rail, and the fixed clamping piece and the movable clamping piece are in sliding fit. The movable clamping piece is provided with a straightening mechanism, the straightening mechanism comprises a supporting frame, a first transverse rod and a second transverse rod which are vertically aligned and spaced are arranged in the supporting frame, the two ends of the second transverse rod are connected with the vertical side walls of the two sides of the supporting frame, and the two ends of the first transverse rod are in sliding fit with the vertical side walls of the two sides of the supporting frame in the vertical direction. The top plate of the supporting frame is in threaded connection with a second threaded rod, a U-shaped frame is hinged to the bottom of the second threaded rod, and two side plates of the U-shaped frame are connected with the two sides of the second transverse rod respectively. The detection process is simplified, repeated sample loading and unloading are not needed, and the sample detection efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of wire and cable testing equipment, and specifically relates to an auxiliary device for testing the DC resistance of wire and cable conductors. Background Technology

[0002] The DC resistance of conductors in electric wires and cables is a crucial performance indicator, affecting power loss, current carrying capacity, and system stability. According to the standard GB / T 3048.4-2007 "Test Methods for Electrical Performance of Wires and Cables Part 4: DC Resistance Test of Conductors," a sample of at least 1.0 m in length should be cut from the tested wire or cable. Furthermore, before the DC resistance test, the sample should be placed in a test environment with a temperature of (15-25)℃ and humidity not exceeding 85% for a sufficient period to achieve temperature and humidity equilibrium. While the humidity requirements are generally met in laboratory settings, maintaining a constant temperature for the wire and cable samples presents challenges. Firstly, existing equipment, such as high and low temperature environmental test chambers, often has dimensions that are incompatible with the size of the wire and cable samples, resulting in either insufficient space or excessively large and wasteful requirements. Secondly, using air conditioning and other equipment to maintain a constant temperature throughout the laboratory is a common practice in the testing industry. However, controlling the temperature of the entire room with air conditioning has the drawback of wasting electricity. In addition, the frequent entry and exit of staff during the day, and the opening and closing of doors and windows, are not conducive to temperature control in the laboratory. Furthermore, the long-term operation of air conditioning at night when staff are not present also poses safety hazards.

[0003] Since the resistance and length of a sample are linearly related, accurate measurement of the sample length is crucial. Therefore, a "sample straightening" process is required before testing. The sample is then placed in a fixture for fixation before testing. This process of fixing the sample repeatedly requires frequent loading and unloading by staff, resulting in low sample testing efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide an auxiliary device for detecting the DC resistance of wire and cable conductors, aiming to solve the problems existing in the prior art mentioned above.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An auxiliary device for detecting the DC resistance of wire and cable conductors includes a workbench and a constant temperature and humidity chamber disposed at the bottom of the workbench. The constant temperature and humidity chamber is used to store the test sample. The workbench is provided with a clamping mechanism, which includes a slide rail spaced apart, a fixed clamping member disposed at one end of the slide rail, and a movable clamping member that slides with the slide rail. The fixed clamping member and the movable clamping member cooperate to clamp and fix the sample. The movable clamping member is provided with a straightening mechanism, which includes a support frame. The support frame is provided with a first horizontal bar and a second horizontal bar spaced apart vertically. The two ends of the second horizontal bar are connected to the vertical side walls on both sides of the support frame. The two ends of the first horizontal bar are respectively slidably engaged with the vertical side walls on both sides of the support frame. The first horizontal bar and the second horizontal bar are respectively provided with a rotating wheel. The top plate of the support frame is threadedly connected to a second threaded rod. The bottom of the second threaded rod is hinged to a U-shaped frame. The two side plates of the U-shaped frame are respectively connected to the two sides of the second horizontal bar.

[0007] Furthermore, two vertical rods are arranged vertically inside the support frame, and a third horizontal rod is provided at the upper and lower ends of the vertical rods respectively, which are slidably engaged with them. A spring is sleeved on the third horizontal rod located between the vertical side wall of the support frame and the vertical rod, and the vertical rod is provided with a rotating wheel.

[0008] Furthermore, the fixed clamping member includes a base and a clamping component, the movable clamping member includes a clamping component and a slide block that slides with the slide rail, the clamping component includes an upper clamping member and a lower clamping member, the lower clamping member has a receiving groove, the opening of the receiving groove has a V-shaped structure, and threaded holes are respectively provided on both sides of the receiving groove along the vertical direction, the upper clamping member includes a fixed seat, the bottom of the fixed seat is provided with a fixed plate, the fixed plate has an inverted V-shaped structure, the fixed plate is used to pass through the receiving groove, the fixed plate cooperates with the receiving groove to clamp and fix the sample, and the fixed plate has a first threaded rod on both sides that is threadedly connected to the threaded hole, the first threaded rod is hinged to the fixed seat.

[0009] Furthermore, the top end of the first threaded rod is inserted into the fixed seat, and a first bevel gear is provided at its end. A second bevel gear that meshes with the first bevel gear is provided inside the fixed seat. Rotating rods are inserted through the second bevel gears on both sides. A motor is provided on the outside of the fixed seat, and the motor is connected to the rotating rods in a transmission connection.

[0010] Furthermore, an extension plate is provided between the slide rails. The extension plate slides in conjunction with the worktable. The sliding direction of the extension plate is the same as the length direction of the slide rail. A connecting lug is provided at the end of the extension plate away from the fixed clamping member. A connecting plate is provided at the bottom of the slide block. The connecting plate and the connecting lug are connected by a fixing pin.

[0011] Furthermore, the constant temperature and humidity chamber is equipped with a support plate, the support plate has through holes, and multiple sets of support plates are evenly spaced along the vertical direction.

[0012] Furthermore, the support plate is provided with a first partition plate that is perpendicularly connected to it. Multiple sets of the first partition plates are evenly spaced along one side of the support plate, and the gap between adjacent first partition plates is used to place the sample.

[0013] Furthermore, the support plate is provided with a second partition that is perpendicularly connected to it. The second partition has a U-shaped structure, and multiple second partitions are evenly nested together.

[0014] Furthermore, the first partition is located at the middle position of one side of the support plate, and the second partition is located at the end of that side of the support plate.

[0015] Compared with the shortcomings and deficiencies of existing technologies, this utility model has the following beneficial effects:

[0016] 1. This utility model provides an auxiliary device for testing the DC resistance of wire and cable conductors. A constant temperature and humidity chamber is used to store the sample. Compared with the existing separate straightening process for the sample, this auxiliary device for testing the DC resistance of wire and cable conductors has a straightening mechanism set on one side of the movable clamp. Before testing, one end of the sample is fixed to the fixed clamp, and the other end passes through the straightening mechanism and the movable clamp. The movable clamp moves along the slide rail, which drives the straightening mechanism to move. The wheels of the first and second horizontal bars straighten the cable along the upper and lower sides. The vertical bars on both sides straighten the cable along the horizontal sides of the sample under the action of springs. After the cable is straightened, it is directly fixed by the movable clamp, and subsequent testing can begin. This simplifies the testing process, eliminates the need for repeated loading and unloading of the sample, and thus improves the sample testing efficiency.

[0017] 2. An extension plate is provided between the two slide rails. The extension plate slides with the worktable. A connecting ear is provided at the end of the extension plate away from the fixed clamping part. A connecting plate is provided at the bottom of the slide block and fixed with the connecting ear. By sliding the extension plate, the moving clamping part is driven to slide out of the slide rail, extending the distance between the fixed clamping part and the moving clamping part. This allows the auxiliary device for detecting the DC resistance of wire and cable conductors to meet the requirements of both short-sized and long-sized sample testing.

[0018] The constant temperature and humidity chamber is equipped with a support plate. The top surface of the support plate is equipped with a first partition to divide the partition into sections, which facilitates the independent placement of multiple samples and improves the convenience of sample storage and retrieval. The top surface of the support plate is equipped with a second partition with a U-shaped structure. The gap between adjacent second partitions is used to store samples with longer lengths. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an auxiliary device for detecting the DC resistance of wire and cable conductors according to this utility model.

[0020] Figure 2 This is a schematic diagram of the workbench with a clamping mechanism in this utility model.

[0021] Figure 3 This is a structural schematic diagram of the fixing clamp in this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the movable clamping component in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the support frame in this utility model, which includes a first crossbar and a second crossbar.

[0024] Figure 6 This is a schematic diagram of the structure of the support frame with vertical rods and a third horizontal rod in this utility model.

[0025] Figure 7 This is a schematic diagram of the connection structure between the extension plate and the worktable in this utility model.

[0026] Figure 8 This is a schematic diagram of the structure of the constant temperature and humidity chamber with a support plate installed inside.

[0027] Figure 9 This is a schematic diagram of the structure of the support plate with the first partition in this utility model.

[0028] Figure 10 This is a schematic diagram of the structure of the support plate of this utility model, which is provided with a first partition and a second partition.

[0029] In the diagram: 1-Workbench; 2-Constant temperature and humidity chamber; 3-Fixed clamping component; 4-Moving clamping component; 5-Slide rail; 6-Support frame; 7-Motor; 8-Extension plate; 9-Base; 10-Upper clamping component; 11-Lower clamping component; 12-Fixed seat; 13-Fixed plate; 14-First threaded rod; 15-Accommodating groove; 16-Threaded hole; 17-First bevel gear; 18-Second bevel gear; 19-Rotating rod; 20-Slide seat; 21 21-Connecting plate; 22-Connecting ear; 23-First crossbar; 24-Rotating wheel; 25-Second crossbar; 26-U-shaped frame; 27-Second threaded rod; 28-First slide groove; 29-First slider; 30-Vertical rod; 31-Third crossbar; 32-Second partition; 33-Spring; 34-First fixing hole; 35-Second slider; 36-Second slide groove; 37-Box door; 38-Support plate; 39-Through hole; 40-First partition. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] Reference Figures 1-2An auxiliary device for testing the DC resistance of wire and cable conductors includes a workbench 1 and a constant temperature and humidity chamber 2 set at the bottom of the workbench 1. The workbench 1 is used to test the DC resistance of the wire and cable conductors, and the constant temperature and humidity chamber 2 is used to store the wire and cable conductor sample to be tested (hereinafter referred to as the sample) in an environment with a certain temperature and humidity to ensure the accuracy of the test.

[0032] Reference Figure 3 and Figure 4 The workbench 1 is provided with a clamping mechanism for clamping and fixing the sample. The clamping mechanism includes a slide rail 5 arranged parallel to each other on the workbench 1, a fixed clamping member 3 arranged at one end of the slide rail 5, and a movable clamping member 4 that slides with the slide rail 5. The fixed clamping member 3 and the movable clamping member 4 cooperate to clamp and fix the sample. The fixed clamping member 3 includes a base 9 disposed on the workbench 1 and a clamping member disposed on the top of the base 9. The movable clamping member 4 includes a slide 20 and a clamping member disposed on the top of the slide 20. The two sides of the slide 20 are slidably engaged with the slide rail 5. The clamping members of the fixed clamping member 3 and the movable clamping member 4 have the same clamping member structure. The clamping member includes a lower clamping member 11 and an upper clamping member 10. The lower clamping member 11 is provided with a receiving groove 15 along the vertical direction. The groove opening of the receiving groove 15 has a V-shaped structure. The upper clamping member 10 includes a fixed base 12 and a fixed plate 13 disposed at the bottom of the fixed base 12. The bottom of the fixed plate 13 has an inverted V-shaped structure. The fixed plate 13 can... The sample slides into the receiving groove 15. The lower clamping member 11 is located on both sides of the receiving groove 15 and has threaded holes 16 vertically arranged. The fixing plate 13 has first threaded rods 14 aligned on both sides. The first threaded rods 14 are vertically arranged and threaded to the threaded holes 16. The top of the first threaded rod 14 passes through the fixing seat 12 and is hinged to the fixing seat 12. The top of the first threaded rod 14 is provided with a first bevel gear 17. The fixing seat 12 is provided with second bevel gears 18 that mesh with the first bevel gears 17 on both sides. The second bevel gears 18 on both sides are connected by a rotating rod 19. A motor 7 is provided on the outside of the fixing seat 12 and is connected to the rotating rod 19 for transmission. The sample is placed in the groove opening of the receiving groove 15 and the motor 7 is started. Through the meshing of the second bevel gears 18 and the first bevel gears 17, the motor 7 drives the first threaded rods 14 on both sides to rotate synchronously, so that the fixing plate 13 gradually enters the receiving groove 15, thereby clamping and fixing the sample between the receiving groove 15 and the fixing plate 13.

[0033] Reference Figure 5 and Figure 6The movable clamping member 4 is equipped with a straightening mechanism, which straightens the sample by moving along the sample length direction. Specifically, the straightening mechanism includes a rectangular support frame 6, a first horizontal bar 23 horizontally arranged inside the support frame 6, the two ends of the first horizontal bar 23 being perpendicularly connected to the vertical sidewalls on both sides of the support frame 6, and multiple rotating wheels 24 passing through the first horizontal bar 23, which rotatably engage with the first horizontal bar 23. Above the first horizontal bar 23, a second horizontal bar 25 is provided parallel to and aligned with it, the two ends of the second horizontal bar 25 being vertically slidingly engaged with the vertical sidewalls on both sides of the support frame 6, and first sliding grooves 28 symmetrically arranged on the vertical sidewalls on both sides of the support frame 6, extending vertically. The two ends of the two crossbars 25 are respectively provided with first sliders 29 that slide in cooperation with the first sliding groove 28. The second crossbar 25 is provided with a rotating wheel 24 that rotates with it. The top plate of the support frame 6 is vertically threaded to the second threaded rod 27. The bottom of the second threaded rod 27 is hinged to the U-shaped frame 26. The back plate of the U-shaped frame 26 is hinged to the bottom of the second threaded rod 27. The parallel side plates on both sides are respectively connected to the two sides of the second crossbar 25. The top of the second threaded rod 27 is provided with a hand-held part. By rotating the second threaded rod 27 through the hand-held part, the U-shaped frame 26 is driven to adjust the height position of the second crossbar 25, so that the sample can be placed between the first crossbar 23 and the rotating wheel 24 of the second crossbar 25.

[0034] Vertical rods 30 are symmetrically arranged between the two vertical sidewalls inside the support frame 6. Third horizontal rods 31 are respectively arranged at the top and bottom of the vertical rods 30 inside the support frame 6. The third horizontal rods 31 on both sides are respectively arranged close to the top plate and bottom plate of the support frame 6. The end of the vertical rod 30 is sleeved on the third horizontal rod 31. The vertical rod 30 and the third horizontal rods 31 on the upper and lower sides are slidably engaged. A spring 33 is sleeved on the third horizontal rod 31 between the vertical sidewall of the support frame 6 and the end of the vertical rod 30. A rotating wheel 24 is sleeved on the third horizontal rod 31 and rotates with it. Under the action of the spring 33 and in a natural state, the rotating wheel 24 between the two vertical rods 30 abuts.

[0035] The sample located between the two vertical bars 30 is clamped by the rotating wheels 24 driven by the two vertical bars 30 under the action of the spring 33. At the same time, the sample is inserted between the first horizontal bar 23 and the second horizontal bar 25. Through the second threaded rod 27, the rotating wheels 24 of the first horizontal bar 23 and the second horizontal bar 25 respectively abut against the upper and lower sides of the sample. The straightening mechanism is moved by the moving clamping member 4 to facilitate the straightening of the sample.

[0036] Reference Figure 8The constant temperature and humidity chamber 2 is used to store the samples to be tested, providing a constant temperature and humidity environment for the samples, which helps to ensure the accuracy of sample testing. A door 37 is provided on one side of the constant temperature and humidity chamber 2 for placing and removing samples. Multiple layers of support plates 38 are evenly spaced inside the chamber 2, with through holes 39 evenly distributed on the support plates 38 to facilitate air circulation within the chamber 2, which helps to ensure the consistency of temperature and humidity in all parts of the chamber 2. The door 37 adopts a segmented multi-door design, which helps to reduce the opening area of ​​the door 37, thereby reducing the impact of opening the door 37 on the temperature and humidity inside the chamber 2 and helping to save energy.

[0037] In one embodiment, refer to Figure 7 An extension plate 8 is provided between the slide rails 5 on both sides of the top of the workbench 1. The length direction of the extension plate 8 is the same as that of the slide rail 5. Preferably, the length of the extension plate 8 is the same as that of the slide rail 5. The extension plate 8 is slidably engaged with the workbench 1. A second slider 35 is provided at the bottom of the extension plate 8. The second slider 35 is located at one end near the fixed clamping member 3. The workbench 1 is provided with a second slide groove 36, which is parallel to the slide rail 5. The second slider 35 is slidably connected to the second slide groove 36. Connecting ears 22 are provided at intervals on the top surface of the extension plate 8 at the other end of the second slider 35. The connecting ears 22 are at the same height position and are provided with two sets of relatively through first fixing holes 34. In the movable clamping member 4, the bottom of the slide base 20 is provided for the connecting ears on both sides to pass through. The connecting plate 21 between 22 has two sets of second fixing holes that are aligned with the first fixing hole 34. The first fixing hole 34 and the second fixing hole are fixed by fixing pins, thereby fixing the movable clamping member 4 to the end of the extension plate 8 through the connecting ear 22. The slide rail 5 is provided with a baffle (not shown in the figure) at the end opposite to the fixed clamping member 3. The baffle and the worktable 1 can be fixed by bolts or snap-fit. The baffle is used to block the movable clamping member 4 and prevent the movable clamping member 4 from sliding out of the slide rail 5. After the baffle is removed, the bottom slide seat 20 of the movable clamping member 4 can slide out along the end of the slide rail 5 to fix the movable clamping member 4 to the end of the extension plate 8. Sliding the extension plate 8 away from the fixed clamping member 3 can increase the length range of the measured sample.

[0038] In one embodiment, refer to Figure 9 Inside the constant temperature and humidity chamber 2, a first partition 40 is provided on the top of the support plate 38. The first partition 40 is perpendicular to the support plate 38 and is used to divide the support plate 38 into sections to facilitate sample placement. The length extension direction of the first partition 40 is perpendicular to the chamber door 37. Multiple sets of first partitions 40 are arranged in parallel at intervals. The sample is placed in the gap between adjacent first partitions 40 to solve the problem that when multiple samples are placed on the same layer of support plate 38, they are easy to get tangled together and inconvenient to take out.

[0039] In one embodiment, refer to Figure 10The support plate 38 has a second partition 32 on its top. The second partition 32 has a U-shaped structure, with both ends located on the same side of the support plate 38 and perpendicular to the door 37. Each end is close to the opposite end of the side of the support plate 38. Multiple second partitions 32 are spaced parallel to each other, and their U-shaped structures are nested within each other, so that the length of the second partition 32 gradually decreases as it transitions from the side of the support plate 38 towards the center. The U-shaped second partitions 32 are used to place longer samples, for example, samples longer than 1 m. Samples can be placed in the gaps between adjacent second partitions 32 on the support plate 38 using the U-shaped structure.

[0040] In one embodiment, the support plate 38 has a size of 1m*1m. A second partition 32 is provided on the side of the support plate 38 near the end of the door 37. A first partition 40 is provided near the middle of the side of the support plate 38, forming a combined structure of the first partition 40 and the second partition 32. The gap of the second partition 32 is used to place samples with a length greater than 1m, and the gap between the first partitions 40 near the middle is used to place samples with a length less than 1m, which is beneficial to meet the storage of samples of different sizes.

[0041] When using this auxiliary device for detecting the DC resistance of wire and cable conductors, the sample is first placed in the constant temperature and humidity chamber 2 for a period of time. Longer samples are placed in the gap between adjacent second partitions 32. When testing is required, the sample is taken out through the chamber door 37. The movable clamp 4 is moved closer to the fixed clamp 3, and one end of the sample is passed through the movable clamp 4 and the straightening mechanism, and then fixed to the fixed clamp 3. At this time, the movable clamp 4 does not fix the sample and moves along the slide rail 5 away from the fixed clamp 3. The straightening mechanism straightens the sample. When the sample length is less than the length of the slide rail 5, after moving to a suitable measurement position, the movable clamp 4 clamps and fixes the sample, and it can be tested by the testing equipment. When the sample length is greater than the length of the slide rail 5, the movable clamp 4 is moved to the point where the connecting plate 21 passes between the connecting ears 22 and is fixed by the fixing pin. Then, the baffle at the end of the slide rail 5 is removed, the extension plate 8 is slid, and the movable clamp 4 continues to move away from the fixed clamp 3. When it moves to a suitable testing position, the sample is clamped and fixed by the movable clamp 4, and the sample is tested by the testing equipment.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for detecting the DC resistance of wire and cable conductors, characterized in that, The system includes a workbench (1) and a constant temperature and humidity chamber (2) located at the bottom of the workbench (1). The constant temperature and humidity chamber (2) is used to store the test sample. The workbench (1) is equipped with a clamping mechanism, which includes a slide rail (5) spaced apart, a fixed clamping member (3) located at one end of the slide rail (5), and a movable clamping member (4) that slides with the slide rail (5). The fixed clamping member (3) and the movable clamping member (4) cooperate to clamp and fix the sample. The movable clamping member (4) is equipped with a straightening mechanism, which includes a support frame (6). 6) The inner part is provided with a first horizontal bar (23) and a second horizontal bar (25) with upper and lower alignment intervals. The two ends of the second horizontal bar (25) are connected to the vertical side walls on both sides of the support frame (6). The two ends of the first horizontal bar (23) are respectively slidably engaged with the vertical side walls on both sides of the support frame (6). The first horizontal bar (23) and the second horizontal bar (25) are respectively provided with a rotating wheel (24). The top plate of the support frame (6) is threadedly connected to a second threaded rod (27). The bottom of the second threaded rod (27) is hinged to a U-shaped frame (26). The two side plates of the U-shaped frame (26) are respectively connected to the two sides of the second horizontal bar (25).

2. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 1, characterized in that, Two vertical rods (30) are arranged in the support frame (6) along the vertical direction. A third horizontal rod (31) is provided at the upper and lower ends of the vertical rod (30) respectively, and a spring (33) is sleeved on the third horizontal rod (31) between the vertical side wall of the support frame (6) and the vertical rod (30). A wheel (24) is provided on the vertical rod (30).

3. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 2, characterized in that, The fixed clamping member (3) includes a base (9) and a clamping member. The movable clamping member (4) includes a clamping member and a slide seat (20) that slides with the slide rail (5). The clamping member includes an upper clamping member (10) and a lower clamping member (11). The lower clamping member (11) has a receiving groove (15). The opening of the receiving groove (15) is V-shaped, and threaded holes (16) are respectively provided vertically on both sides of the receiving groove (15). The upper clamping member (10) includes a fixed seat (12). The bottom of the fixed seat (12) is provided with a fixed plate (13). The fixed plate (13) is inverted V-shaped. The fixed plate (13) is used to pass through the receiving groove (15). The fixed plate (13) and the receiving groove (15) cooperate to clamp and fix the sample. The fixed plate (13) is provided with a first threaded rod (14) that is threadedly connected to the threaded hole (16) on both sides. The first threaded rod (14) is hinged to the fixed seat (12).

4. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 3, characterized in that, The top end of the first threaded rod (14) is inserted into the fixed seat (12), and a first bevel gear (17) is provided at its end. A second bevel gear (18) that meshes with the first bevel gear (17) is provided inside the fixed seat (12). Rotating rods (19) are inserted through the second bevel gears (18) on both sides. A motor (7) is provided on the outside of the fixed seat (12). The motor (7) is connected to the rotating rod (19) in a transmission.

5. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 3, characterized in that, An extension plate (8) is provided between the slide rails (5). The extension plate (8) slides with the worktable (1). The sliding direction of the extension plate (8) is the same as the length direction of the slide rails (5). A connecting ear (22) is provided at one end of the extension plate (8) away from the fixed clamping member (3). A connecting plate (21) is provided at the bottom of the slide block (20). The connecting plate (21) and the connecting ear (22) are connected by a fixing pin.

6. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 1, characterized in that, The constant temperature and humidity chamber (2) is provided with a support plate (38), the support plate (38) is provided with through holes (39), and multiple sets of support plates (38) are evenly spaced along the vertical direction.

7. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 6, characterized in that, The support plate (38) is provided with a first partition (40) perpendicularly connected to it. Multiple sets of the first partition (40) are evenly spaced along one side of the support plate (38), and the gap between adjacent first partitions (40) is used to place the sample.

8. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 7, characterized in that, The support plate (38) is provided with a second partition (32) that is vertically connected to it. The second partition (32) has a U-shaped structure and multiple second partitions (32) are evenly nested.

9. The auxiliary device for detecting DC resistance of wire and cable conductors as described in claim 7, characterized in that, The first partition (40) is located at the middle position of one side of the support plate (38), and the second partition (32) is located at the end of the side of the support plate (38).

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