Conductor cutting and sampling device for conductor resistance test

Abstract

The utility model relates to the technical field of conductor resistance testing equipment, and aims to solve the technical problem that the error of the length of a conductor is large. In order to solve the technical problem, the utility model provides the conductor cutting and sampling device for testing the resistance of the conductor. The cutting device comprises a cutting platform; the two cutting saws are connected to the two ends of the cutting platform respectively; the clamping assembly is connected to the cutting platform and used for clamping the conductor; the supporting piece is provided with a groove for placing a conductor; the straightening assembly is arranged between the two cutting saws; the straightening assembly comprises a straightening driving piece and a straightening piece located in the groove. The straightening driving piece is connected with the cutting platform, and an output shaft of the straightening driving piece is connected with the straightening piece; the straightening driving piece drives the straightening piece to slide in the groove so as to apply pressure to the conductor; and the weighing assembly is arranged on the cutting platform, located on one side of the straightening assembly and used for weighing the weight of the sampling conductor. The cutting precision is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of conductor resistance testing equipment, and in particular to a conductor cutting and sampling device for conductor resistance testing. Background Technology

[0002] Conductor resistance is one of the most important indicators of a cable. GB / T 3956 specifies the maximum resistance (Ω / km) at 20℃ for different cross-sections. GB / T 3048.4 specifies the DC resistance test method. GB / T 3953 specifies that the resistivity (P) of a copper conductor (TR) should be ≤0.017241 Ω·mm² / m. Based on the resistance calculation formula R = PL / S (where P is the resistivity of the material used to make the resistor, L is the length of the wire used to make the resistor, S is the cross-sectional area of ​​the wire used to make the resistor, and R is the resistance value), the minimum cross-sectional area can be derived.

[0003] Circular compacted conductors strictly adhere to standard requirements, with a one-meter effective length used for DC resistance testing. Samples are tested before each production run, and production can only commence after the sample passes the test. In contrast, segmented conductors are typically composed of multiple sector-shaped strands forming a circle. Production generally involves first producing the required sector-shaped strands, then using a cabling machine to assemble them into the desired circular cross-section. (Gap between sector-shaped strands significantly impacts resistance testing. Furthermore, individual sector-shaped strands cannot be directly tested for DC resistance; therefore, multiple strands must be produced before cabling to form a single circular cross-section. The resistance of the cable is then sampled and tested. If the test fails, all previously produced strands are scrapped, resulting in substantial waste. Additionally, larger conductor cross-sections require longer temperature-controlled chamber times, severely impacting production efficiency.) Segmented conductors, cut and sampled using standard methods, have increased errors and are more difficult to test, failing to reflect actual production conditions. Therefore, actual manufacturers, customers, or third-party supervisors typically use conductor cross-sections to measure cable performance indicators. The minimum cross-sectional area can be obtained using the formula R=ρL / S. Then, the conductor is weighed, its length measured, and the cross-sectional area of ​​the strand is calculated. Comparing this cross-sectional area with the minimum cross-sectional area allows us to determine whether the cable performance of the sampled conductor meets the standards.

[0004] Existing technologies mostly use tools such as scissors to cut conductors. However, in this process, the cut surface of scissors is not uniform, the conductor is bent, and the length measurement is affected. This results in a large error in the conductor length, which in turn leads to a large error in the weight. Consequently, the calculated cross-sectional area has a large error, and the final cable performance index of the conductor has a large error. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the above-mentioned problems existing in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model provides a conductor cutting and sampling device for conductor resistance testing, comprising:

[0007] Cutting platform;

[0008] Two cutting saws are connected to both ends of the cutting platform, respectively;

[0009] Clamping assembly, connected to the cutting platform, is used to clamp the conductor;

[0010] A support member is attached to the cutting platform; the support member has grooves for placing conductors.

[0011] A straightening assembly is located between two cutting saws and on one side of a support member; the straightening assembly includes a straightening drive and a straightening member located in a groove; the straightening drive is connected to the cutting platform, and the output shaft of the straightening drive is connected to the straightening member; the straightening drive drives the straightening member to slide in the groove to apply pressure to the conductor;

[0012] A weighing assembly, located on the cutting platform and on one side of the straightening assembly, includes a weighing body for weighing the sampled conductor.

[0013] In one embodiment of this utility model, there are multiple straightening components, which are arranged at intervals along the length of the support member.

[0014] In one embodiment of this utility model, there are two clamping components, which are respectively disposed on the outside of the two cutting saws.

[0015] In one embodiment of this utility model, the groove is an L-shaped groove with two openings, which face the top of the support member and the straightening assembly, respectively.

[0016] In one embodiment of the present invention, the weighing component further includes a limiting member disposed on the weighing body; the limiting member is provided with a placement groove, and the sampling conductor is placed in the placement groove.

[0017] In one embodiment of this utility model, the straightening drive includes a straightening fixing seat and a lead screw; the straightening fixing seat is connected to the cutting platform and has a threaded hole; the lead screw is threadedly connected to the threaded hole, and the straightening component is connected to one end of the lead screw.

[0018] In one embodiment of the present invention, the clamping assembly includes a clamping drive and a clamping member; the clamping drive is connected to the cutting platform; the output end of the clamping drive is connected to the clamping member; the clamping drive drives the clamping member to move to clamp the conductor.

[0019] In one embodiment of this utility model, the application also includes a measuring ruler connected to the cutting platform for measuring the distance between the cutting positions of the two cutting saws.

[0020] In one embodiment of this utility model, the application further includes a movable component connected to the bottom of the cutting platform.

[0021] In one embodiment of this utility model, the application further includes a fixing component for connecting the cutting platform and the cutting saw; the fixing component includes multiple limiting protrusions, a fixing base and screws; the multiple limiting protrusions are respectively located around the cutting saw and connected to the cutting platform; the fixing base is connected to the cutting platform and is located on one side of the cutting saw; the screw is threadedly connected to the fixing base and the end of the screw rests on one side of the cutting saw.

[0022] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0023] The conductor cutting and sampling device for conductor resistance testing described in this invention has a fixed cutting length when two cutting saws are installed, eliminating the need to measure the length each time a cut is made, thus reducing measurement errors. During the cutting process, the support member supports the conductor, and then the clamping assembly clamps the conductor to prevent it from shifting during cutting, ensuring a flat cut surface. In addition, the straightening assembly can apply pressure to straighten the conductor placed in the groove, ensuring that the conductor is cut in a straight state, thus improving cutting accuracy. Attached Figure Description

[0024] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0025] Figure 1 This is a front view of a conductor cutting and sampling device for conductor resistance testing according to a preferred embodiment of the present invention;

[0026] Figure 2 yes Figure 1 A top view of a conductor cutting and sampling device used for conductor resistance testing;

[0027] Figure 3 yes Figure 2 AA view;

[0028] Explanation of reference numerals in the instruction manual:

[0029] 100. Cutting platform;

[0030] 200. Cutting saw; 210. Fixing component; 211. Limiting protrusion; 212. Fixing base; 213. Screw;

[0031] 300. Clamping assembly; 310. Clamping element; 320. Clamping fixing element; 330. Screw;

[0032] 400. Conductor;

[0033] 500, Support component; 510, Groove;

[0034] 600. Straightening assembly; 610. Straightening component; 620. Straightening fixing base; 630. Rotating handle; 640. Lead screw;

[0035] 700 Weighing assembly; 710 Weighing body; 720 Limiting component; 721 Placement slot;

[0036] 800. Measuring ruler;

[0037] 900. Mobile components. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0039] Reference Figures 1-3 As shown, this utility model embodiment provides a conductor cutting and sampling device for conductor resistance testing, comprising:

[0040] Cutting platform 100;

[0041] Two cutting saws 200 are connected to both ends of the cutting platform 100 respectively; the cutting saws 200 can be metal band saws.

[0042] The clamping assembly 300 is connected to the cutting platform 100 and is used to clamp the conductor 400;

[0043] The support member 500 is connected to the cutting platform 100; the support member 500 is provided with a groove 510 for placing the conductor 400;

[0044] A straightening assembly 600 is disposed between two cutting saws 200 and on one side of a support member 500. The straightening assembly 600 includes a straightening drive and a straightening member 610 located in a groove 510. The straightening drive is connected to the cutting platform 100, and the output shaft of the straightening drive is connected to the straightening member 610. The straightening drive drives the straightening member 610 to slide in the groove 510 to apply pressure to the conductor 400.

[0045] The weighing assembly 700 is disposed on the cutting platform 100 and located on one side of the straightening assembly 600. The weighing assembly 700 includes a weighing body 710 for weighing the sample conductor 400.

[0046] Specifically, in this embodiment, the cutting length is fixed when the two cutting saws 200 are installed. During the cutting process, the support member 500 supports the conductor 400, and then the clamping assembly 300 clamps the conductor 400 to prevent it from moving during the cutting process, ensuring that the cut surface is flat. In addition, the straightening assembly 600 can apply pressure to straighten the conductor 400 placed in the groove 510, ensuring that the conductor 400 is in a straight state during cutting, thus improving the cutting accuracy.

[0047] Furthermore, there are multiple straightening components 600, which are spaced apart along the length of the support member 500. Specifically, the multiple straightening components 600 can straighten multiple points of the sampling portion of the conductor 400, thereby ensuring the flatness of the cutting plane and improving the accuracy of the cutting length.

[0048] Furthermore, there are two clamping components 300, each located on the outside of one of the two cutting saws 200. Specifically, in this embodiment, the conductor 400 is clamped from both ends, the portions of which are discarded after cutting. Therefore, this embodiment ensures stable and reliable clamping of the conductor 400 during the cutting process while avoiding damage to the sampling portion of the conductor 400 caused by clamping at the sampling position.

[0049] Furthermore, the groove 510 is an L-shaped groove, meaning that the top and one side of the L-shaped groove are open. The top opening is located on the top of the support member 500, and the one-side opening faces the straightening assembly 600. Specifically, this embodiment facilitates placing the conductor 400 in the groove 510 and removing the cut sampling conductor 400 from the groove 510.

[0050] Furthermore, the weighing assembly 700 also includes a limiting member 720 disposed on the weighing body 710; the limiting member 720 is provided with a placement groove 721, in which the sampling conductor 400 is placed. Specifically, when the sampling conductor 400 is weighed, the placement groove 721 can restrict the sampling conductor 400 to prevent it from rolling on the weighing body 710, thereby improving weighing efficiency. The weighing body 710 is an electronic scale, and the weight of the limiting member 720 is removed during weighing. In some embodiments, the placement groove 721 is a U-shaped groove with its opening facing upwards. This facilitates the placement of the sampling conductor 400 while restricting the sampling conductor 400 from rolling back and forth in the U-shaped groove.

[0051] Furthermore, the straightening drive includes a straightening fixing seat 620, a rotating handle 630, and a lead screw 640. The straightening fixing seat 620 is connected to the cutting platform 100 by bolts, and the straightening fixing seat 620 is provided with a threaded hole. The lead screw 640 is threadedly connected to the threaded hole, and the straightening component 610 is connected to one end of the lead screw 640. The rotating handle 630 is connected to the other end of the lead screw 640. Specifically, in this embodiment, the movement of the lead screw 640 relative to the cutting platform 100 is achieved through the cooperation between the lead screw 640 and the threaded hole, thereby applying force to the conductor 400 to straighten the conductor 400. Operation is convenient. The rotating handle 630 facilitates the rotation of the lead screw 640.

[0052] Further, the clamping assembly 300 includes a clamping drive and a clamping member 310; the clamping drive is connected to the cutting platform 100; the output end of the clamping drive is connected to the clamping member 310; the clamping drive drives the clamping member 310 to move, thereby clamping the conductor 400. Specifically, in this embodiment, the clamping drive drives the clamping member 310 to move, thereby clamping the conductor 400, thus avoiding the conductor 400 from shifting during the cutting process and affecting the cutting accuracy. In some embodiments, the clamping drive includes a clamping fixing member 320 and a screw 330; the clamping fixing member 320 is fixed on the cutting platform 100, the top of the clamping fixing member 320 is provided with a U-shaped groove, and one side wall of the U-shaped groove is provided with a threaded hole; the screw 330 cooperates with the threaded hole; the clamping member 310 is located in the U-shaped groove, and the end of the screw 330 abuts against the conductor 400.

[0053] Furthermore, this application also includes a measuring ruler 800 connected to the cutting platform 100, used to measure the distance between the cutting positions of the two cutting saws 200, ensuring that the distance between the cutting positions of the two cutting saws 200 is equal to the length of the sampling conductor 400. Specifically, this embodiment, on the one hand, can use the measuring ruler 800 to determine whether the distance between the cutting positions of the two cutting saws 200 is equal to the length of the sampling conductor 400 when installing the cutting saws 200, thereby facilitating the installation of the cutting saws 200. On the other hand, it can measure the distance between the cutting positions of the two cutting saws 200 in real time, thereby avoiding the cutting saws 200 shifting after long-term cutting, which would affect the cutting length accuracy.

[0054] Furthermore, this application also includes a movable component 900 connected to the bottom of the cutting platform 100. In some embodiments, the movable component 900 includes a plurality of casters with brakes, and one caster is provided at each of the four corners of the bottom of the cutting platform 100. Specifically, the movable component 900 facilitates the movement of this device to the cable-forming machine that produces conductors 400, thereby enabling rapid cutting after any cable-forming machine has produced conductors 400.

[0055] Furthermore, this application also includes a fixing component 210 for connecting the cutting platform 100 and the cutting saw 200; the fixing component 210 includes multiple limiting protrusions 211, a fixing base 212, and screws 213; the multiple limiting protrusions 211 are respectively located around the cutting saw 200, and the limiting protrusions 211 are connected to the cutting platform 100; the fixing base 212 is connected to the cutting platform 100 and is located on one side of the cutting saw 200; the screws 213 are threadedly connected to the fixing base 212, and the end of the screws 213 abuts against one side of the cutting saw 200. Specifically, in this embodiment, a notched limiting groove is formed by the multiple limiting protrusions 211, which facilitates the quick placement of the cutting saw 200 into the limiting groove, and then the relative fixation of the cutting saw 200 and the cutting platform 100 is achieved by the screws 213. Therefore, it is convenient to quickly install the cutting saw 200 on the cutting platform 100.

[0056] This application can straighten conductors, resulting in flush cut surfaces and minimal length error in the sampled conductors. It allows for fixed cutting lengths (e.g., 1 meter), eliminating the need for measurement at each cut and simplifying calculations. Furthermore, it features a weighing function, enabling immediate weighing after cutting. The device boasts high integration and ease of operation. This application simplifies resistance measurement of segmented conductors, efficiently preparing for product quality assessment; it is also applicable to resistance conversion measurements of round, tightly compressed conductors.

[0057] When the conductor production machine starts, the end of the conductor is introduced into this application until it passes through the clamping assembly and is placed in the groove of the support. The length of the conductor clamped on this device is ensured to be greater than the sampling length. Then, the conductor is clamped and straightened by the clamping and straightening assemblies to prevent it from sagging and to stabilize its position. Subsequently, two cutting saws 200 are activated to cut the two ends of the conductor flush. Since the distance between the two cutting saws 200 is fixed in advance, the length of the cut sample conductor meets the requirements, facilitating subsequent theoretical calculations. After cutting a full 1-meter conductor, it is weighed on a high-precision weighing assembly 700. The cross-section of the conductor is calculated according to the formula. Combined with the cross-section required by the product, it can be determined whether the product meets the requirements.

[0058] This application allows for direct cutting and sampling of the produced conductor next to the conductor production equipment, eliminating the need to cut the conductor off the production equipment and then sample it separately.

[0059] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A conductor cut sampling device for conductor resistance testing, characterized by: include: Cutting platform; Two cutting saws are connected to both ends of the cutting platform, respectively; A clamping assembly, connected to the cutting platform, is used to clamp the conductor; A support member is connected to the cutting platform; the support member is provided with a groove for placing a conductor; A straightening assembly is located between the two cutting saws; the straightening assembly includes a straightening drive and a straightening element located in the groove; the straightening drive is connected to the cutting platform, and the output shaft of the straightening drive is connected to the straightening element; the straightening drive drives the straightening element to slide in the groove to apply pressure to the conductor; A weighing assembly is provided on the cutting platform; the weighing assembly includes a weighing body for weighing the sampled conductor.

2. The conductor cut sampling device for conductor resistance testing of claim 1, wherein: The straightening components are multiple, and the multiple straightening components are arranged at intervals along the length of the support.

3. The conductor cut sampling device for conductor resistance testing of claim 1, wherein: There are two clamping components, which are respectively located on the outside of the two cutting saws.

4. The conductor cutting and sampling device for conductor resistance testing according to claim 1, characterized in that: The groove is an L-shaped groove.

5. The conductor cutting and sampling device for conductor resistance testing according to claim 1, characterized in that: The weighing assembly also includes a limiting member disposed on the weighing body; the top of the limiting member is provided with a placement groove, and the sampling conductor is placed in the placement groove.

6. The conductor cutting and sampling device for conductor resistance testing according to claim 1, characterized in that: The straightening drive includes a straightening fixing seat and a lead screw; the straightening fixing seat is connected to the cutting platform and has a threaded hole; the lead screw is threadedly connected to the threaded hole, and the straightening component is connected to one end of the lead screw.

7. The conductor cutting and sampling device for conductor resistance testing according to claim 1, characterized in that: The clamping assembly includes a clamping drive and a clamping member; the clamping drive is connected to the cutting platform; the output end of the clamping drive is connected to the clamping member; the clamping drive drives the clamping member to move to clamp the conductor.

8. The conductor cutting and sampling device for conductor resistance testing according to claim 1, characterized in that: It also includes a measuring ruler connected to the cutting platform, the measuring ruler being used to measure the distance between the cutting positions of the two cutting saws.

9. The conductor cutting and sampling device for conductor resistance testing according to claim 1, characterized in that: It also includes a movable component connected to the bottom of the cutting platform.

10. The conductor cutting and sampling device for conductor resistance testing according to claim 1, characterized in that: It also includes a fixing assembly for connecting the cutting platform and the cutting saw; the fixing assembly includes a plurality of limiting protrusions, a fixing base and a screw; the plurality of limiting protrusions are respectively located around the cutting saw and the limiting protrusions are connected to the cutting platform; the fixing base is connected to the cutting platform and is located on one side of the cutting saw; the screw is threadedly connected to the fixing base and the end of the screw abuts against one side of the cutting saw.

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