Power bus resistance performance testing device

Abstract

The invention relates to the technical field of power bus resistance performance testing, in particular to a power bus resistance performance testing device, which comprises a driving part, a bus bending part and a linkage part, and is characterized in that four detection environments are set for comparison through cooperation of a testing isolation box, a testing isolation cover, a heating plate and the bus bending part. The detection environment mainly simulates two typical conditions possibly encountered in the actual use process of the power bus: environment temperature change and bending during installation. Through simulating single environment temperature change, single bending condition and simultaneous action of the two conditions, detection is carried out in combination with an ideal state that the single environment temperature change and the single bending condition are not bent at normal temperature, and obtained data are compared with standard data, so that whether the performance of the power bus in actual use meets requirements or not is evaluated.

Description

Technical Field

[0001] The invention relates to the technical field of power bus resistance performance testing, in particular to a power bus resistance performance testing device. Background Art

[0002] The power bus is a power transmission device made of aluminum alloy. It has the advantages of good safety performance, compact structure, small space occupation, easy installation and low investment cost. The power bus resistance performance test is an important link to ensure the safe and efficient operation of the power bus system. By detecting whether the resistance of the power bus is within the range specified by the design and standards, it is judged whether the bus has manufacturing defects and poor connections to ensure that it can transmit power normally and reduce power loss. By measuring the resistance, the heating condition of the bus during operation is evaluated to prevent overheating due to excessive resistance, which in turn causes safety accidents, and ensure the safe and reliable operation of the power system.

[0003] The resistance performance test of the power bus is generally performed by placing the cut power bus to be tested on a bridge fixture and fixing it, and then testing it with an intelligent digital bridge. After the test results are obtained, they are compared with the standard values. However, the installation environment of the power bus is generally connected to the external environment. When the power bus is used in a high-temperature environment for a long time, the resistance value in the high-temperature environment becomes larger. When used, the bus temperature will also increase. Therefore, this detection method is different from the actual use results. In addition, during the installation process, the power bus will be bent as needed. Bending will also change the resistance value of the bus, which will still affect the gap between the test results and the actual use results, and thus cannot be prevented. Summary of the invention

[0004] In view of the above problems, the embodiment of the present application provides a power bus resistance performance test device to solve the technical problems in the related art that the ambient temperature affects the resistance value of the power bus and the bending during installation affects the value of the power bus. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions.

[0005] A power bus resistance performance test device according to an embodiment of the present application includes a bridge clamp, wherein the number of the bridge clamps is four, and the bridge clamps are evenly arranged linearly from front to back. An intelligent digital bridge for use with the bridge clamp is arranged on the left side of each bridge clamp. The intelligent digital bridge is a prior art and is not shown in the accompanying drawings. The intelligent digital bridge is electrically connected to the corresponding bridge clamp, and heating plates for heating the detection environment of the power bus are symmetrically fixedly installed on the left and right ends of the middle upper ends of the bases of the two middle bridge clamps, respectively. A driving part is provided on the two front bridge clamps, and a bus bending part for bending the power bus is provided on the front and rear sides of the driving part, and a linkage part is provided on the driving part and located in front of the bus bending part. A sliding base is symmetrically connected to the left and right sides of the upper end of the base of the bridge clamp, and a potential clamp and a current clamp are respectively connected to the left and right sides of the upper end of the sliding base. Clamp; A test isolation box for isolating the test environment from the external environment is fixedly installed on each bridge clamp, and a test isolation cover made of transparent material is slidably connected to the upper end of the test isolation box. Temperature measuring instruments are provided on the two middle test isolation boxes. The temperature measuring instruments are prior art and are not shown in the accompanying drawings. Adjustment parts are provided on the sliding bases at the left and right ends of each bridge clamp, and the adjustment parts on the two front bridge clamps are provided with anti-interference parts. A control part 1 is commonly provided between two anti-interference parts adjacent to each other on the same side, a control part 2 is commonly provided between two adjustment parts adjacent to each other on the two rear bridge clamps, and a control part 3 is commonly provided between control part 1 and control part 2.

[0006] According to an embodiment of the present invention, the driving part includes a control rod, and the middle parts of the two bridge clamps on the front side are rotatably connected with the control rod. A group of distance-controlling screw groove groups are symmetrically opened on the front and rear sides of the control rod. The distance-controlling screw groove group is composed of thread groove one and thread groove two on the front and rear sides. The rotation direction of thread groove one and thread groove two are opposite. Thread groove three is opened on the control rod and located in front of thread groove one. The rotation direction of thread groove three is the same as that of thread groove two.

[0007] According to an embodiment of the present invention, the busbar bending portion includes an I-shaped plate, an I-shaped plate is threadedly connected on a thread groove 1, the I-shaped plate is slidably connected to the base of the bridge clamp in a front-to-rear manner, a bending column 1 is symmetrically fixedly installed on the upper end of the I-shaped plate, a rectangular block is threadedly connected on a thread groove 2, the rectangular block is slidably connected to the base of the bridge clamp in a front-to-rear manner, and a bending column 2 is fixedly installed on the upper end of the rectangular block.

[0008] According to an embodiment of the present invention, the linkage part includes a moving block, which is threadedly connected to the moving block on three threaded grooves, and the moving block is symmetrically hinged with an inclined traction rod. The front ends of the sliding bases on the left and right sides of the two front bridge clamps are fixedly installed with connecting blocks, and the ends of the inclined traction rods are hinged to the corresponding connecting blocks. A fixed plate is fixedly installed at the upper end of the front side of the base of the bridge clamp, and a guide rod is fixedly installed at the front end of the fixed plate. The front end of the guide rod slides forward and backward and passes through the moving block, and a rotating handle is fixedly installed at the front end of the control rod.

[0009] According to an embodiment of the present invention, the adjustment part includes a fixed block, and a fixed block is fixedly installed on the upper middle end of the sliding base at the left and right ends of each bridge clamp, and a bidirectional screw rod 1 is rotatably connected in the middle of the fixed block, and the left and right sides of the bidirectional screw rod 1 are respectively threadedly connected to the corresponding potential clamp and current clamp.

[0010] According to an embodiment of the present invention, the anti-interference part includes a retractable connecting rod, and the bidirectional screws on the two front bridge clamps are fixedly installed with a retractable connecting rod with a square cross-section at one end away from the center side of the bridge clamp, and a rotating round rod is fixedly installed at the end of the retractable connecting rod. Right-angle brackets are symmetrically fixedly installed at the left and right ends of the two front bridge clamps, and the vertical section of the right-angle bracket is rotatably connected to the corresponding rotating round rod.

[0011] According to an embodiment of the present invention, the control part includes a pulley, and a pulley is fixedly installed on one end of a rotating round rod away from the center side of the bridge clamp, and two adjacent pulleys are connected together through a belt transmission.

[0012] According to an embodiment of the present invention, the second control unit includes a rotating round rod two, and the two ends of the bidirectional screw rods on the two rear bridge clamps that are away from the center side of the bridge clamp are fixedly installed with the rotating round rod two, and the ends of the rotating round rod two that are away from the center side of the bridge clamp are fixedly installed with pulley two, and the two adjacent pulleys two at the front and rear are connected together through a belt two transmission.

[0013] According to an embodiment of the present invention, the control part three includes a pulley three, and the ends of the rotating round rod one and the rotating round rod two in the middle are fixedly installed with pulleys three, the front and rear adjacent pulleys are connected together through belt three transmission, and the two bidirectional screw rods one on the rearmost electric bridge clamp are fixedly connected with a linkage shaft, and the right end of the rotating round rod two on the right bidirectional screw rod one on the rearmost electric bridge clamp is fixedly installed with a distance control handle.

[0014] According to an embodiment of the present invention, the control screws on the potential clamps on the two bridge clamps on the front side are fixedly connected together by connecting rod 1, the control screws on the current clamps on the two bridge clamps on the front side are fixedly connected together by connecting rod 1, the control screws on the potential clamps on the two bridge clamps on the rear side are fixedly connected together by connecting rod 2, and the control screws on the current clamps on the two bridge clamps on the rear side are fixedly connected together by connecting rod 2.

[0015] It can be seen from the above technical solutions that the present invention has the following advantages:

[0016] 1. In the present invention, four test environments are set up for comparison through the cooperation of the test isolation box, the test isolation cover, the heating plate and the busbar bending part. The test environment mainly simulates two typical situations that the power busbar may encounter in actual use: ambient temperature change and bending during installation. By simulating a single ambient temperature change, a single bending situation and the simultaneous action of the two, and combining the ideal state of no bending at normal temperature, the obtained data is compared with the standard data, so as to evaluate whether the performance of the power busbar in actual use meets the requirements.

[0017] 2. In the present invention, under the cooperation of thread groove one and thread groove two, bending column one and bending column two move toward each other to bend the power busbar. At the same time, driven by thread groove three, the moving block moves forward, driving the sliding base to move toward each other, so that the potential clamp and the current clamp move toward each other to adapt to the shortened power busbar, prevent the potential clamp and the current clamp from moving asynchronously after the power busbar is bent, and avoid a large deviation from the initial clamping position, thereby ensuring the accuracy of the detection result.

[0018] In addition to the technical problems solved by the embodiments of the present application described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a power bus resistance performance testing device provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the main stereoscopic structure of the present invention is shown.

[0021] Figure 2 A schematic diagram of the front three-dimensional structure of the present invention without the test isolation box and the test isolation cover is shown.

[0022] Figure 3 Shows Figure 2 A local enlarged view of point M.

[0023] Figure 4 A schematic diagram of the top cross-sectional plan structure of the base of the bridge clamp is shown.

[0024] Figure 5 Shows Figure 4 A local enlarged view of location N.

[0025] Figure 6 The schematic diagram of the front three-dimensional structure of the present invention is shown without the test isolation box, the test isolation cover and the base of the bridge fixture at the front side.

[0026] Figure 7 Shows Figure 6 A local enlarged view of point E.

[0027] The above drawings include the following reference numerals:

[0028] 1. Bridge fixture; 11. Heating plate; 12. Sliding base; 13. Connecting rod 1; 14. Connecting rod 2; 2. Driving unit; 21. Control rod; 22. Thread groove 1; 23. Thread groove 2; 24. Thread groove 3; 3. Busbar bending unit; 31. Cross-shaped plate; 32. Bending column 1; 33. Rectangular block; 34. Bending column 2; 4. Linkage unit; 41. Moving block; 42. Tilt traction rod; 43. Connecting block; 44. Fixed plate; 45. Guide rod; 46. Turn handle; 5 , test isolation box; 51, test isolation cover; 6, adjustment part; 61, fixing block; 62, bidirectional screw one; 7, anti-interference part; 71, telescopic connecting rod; 72, rotating round rod one; 73, right-angle bracket; 8, control part one; 81, pulley one; 82, belt one; 9, control part two; 91, rotating round rod two; 92, pulley two; 93, belt two; 10, control part three; 101, pulley three; 102, belt three; 103, linkage shaft; 104, distance control handle. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] See also Figure 1 and Figure 2 A power bus resistance performance test device includes a bridge fixture 1, the number of the bridge fixtures 1 is four, and the bridge fixtures 1 are evenly arranged linearly from front to back. An intelligent digital bridge used in conjunction with it is arranged on the left side of each bridge fixture 1. The intelligent digital bridge is a prior art and is not shown in the accompanying drawings. The intelligent digital bridge is electrically connected to the corresponding bridge fixture 1. The left and right ends of the middle upper ends of the bases of the two middle bridge fixtures 1 are symmetrically fixed with heating plates 11 for heating the detection environment of the power bus. The two front bridge fixtures 1 are each provided with a driving part 2, and the front and rear sides of the driving part 2 are both provided with a bus bending part 3 for bending the power bus. A linkage part 4 is provided on the driving part 2 and located in front of the bus bending part 3. The left and right sides of the upper end of the base of the bridge fixture 1 are symmetrically connected to a sliding base 12 for sliding left and right, and the left and right sides of the upper end of the sliding base 12 are respectively connected to a potential clamp and a current clamp for sliding left and right; each bridge fixture 1 is fixedly installed with A test isolation box 5 is provided for isolating the test environment from the external environment, and a test isolation cover 51 made of transparent material is slidably connected to the upper end of the test isolation box 5. Temperature measuring instruments are provided on the two middle test isolation boxes 5. The temperature measuring instruments are prior art and are not shown in the accompanying drawings. An adjustment part 6 is provided on the sliding base 12 at the left and right ends of each bridge clamp 1. An anti-interference part 7 is provided on the adjustment part 6 on the two front bridge clamps 1. A control part 1 8 is provided between two anti-interference parts 7 adjacent to each other on the same side. A control part 2 9 is provided between two adjustment parts 6 adjacent to each other on the same side on the two rear bridge clamps 1. A control part 3 10 is provided between the control part 1 8 and the control part 2 9.

[0031] See also Figure 3 The control part 8 includes a pulley 81, and a pulley 81 is fixedly installed on one end of the rotating round rod 72 away from the center side of the bridge clamp 1, and the two adjacent pulleys 81 are connected together through a belt 82.

[0032] See also Figure 2 The control unit 29 includes a rotating round rod 291, and the ends of the two bidirectional screw rods 62 on the two rear bridge clamps 1 away from the center side of the bridge clamp 1 are fixedly installed with rotating round rods 291, and the ends of the rotating round rods 291 away from the center side of the bridge clamp 1 are fixedly installed with pulleys 292, and the two adjacent pulleys 292 are connected together through a belt 293.

[0033] See also Figure 2The control unit 3 10 includes a pulley 3 101, and the ends of the rotating round rod 1 72 and the rotating round rod 2 91 in the middle are fixedly installed with pulleys 3 101, and the front and rear adjacent pulleys are connected together through the belt 3 102 for transmission, and the two bidirectional screw rods 1 62 on the rearmost bridge clamp 1 are fixedly connected with a linkage shaft 103, and the right end of the rotating round rod 2 91 on the right bidirectional screw rod 1 62 on the rearmost bridge clamp 1 is fixedly installed with a distance control handle 104.

[0034] According to the size of the power bus, turn the distance control handle 104, and with the cooperation of pulley 1 81, pulley 2 92, pulley 3 101, belt 1 82, belt 2 93, belt 3 102 and linkage shaft 103, synchronously adjust the distance between the potential clamps and the current clamps on all bridge clamps 1 to ensure that the distance is greater than 1.5 times the circumferential length of the cross-section of the power bus to be tested. Take out four power buses of the same length and size, then strip off the insulation layers at both ends, and then align and place them on the bridge clamp 1 respectively.

[0035] See also Figure 4 and Figure 5 The driving part 2 includes a control rod 21. The middle parts of the two bridge clamps 1 on the front side are connected to the control rod 21 for rotation. The control rod 21 is symmetrically provided with a set of distance-controlled screw grooves. The distance-controlled screw grooves are composed of a screw groove 1 22 and a screw groove 2 23 on the front and rear sides. The screw groove 1 22 and the screw groove 2 23 have opposite rotation directions. The control rod 21 is provided with a screw groove 3 24 on the front side of the screw groove 1 22. The rotation direction of the screw groove 3 24 is the same as that of the screw groove 2 23.

[0036] See also Figure 2 , Figure 5 and Figure 7 The busbar bending portion 3 includes a "J"-shaped plate 31, a "J"-shaped plate 31 is threadedly connected to the thread groove 1 22, the "J"-shaped plate 31 is slidably connected to the base of the bridge fixture 1, a bending column 1 32 is symmetrically fixedly installed on the upper end of the "J"-shaped plate 31, a rectangular block 33 is threadedly connected to the thread groove 23, the rectangular block 33 is slidably connected to the base of the bridge fixture 1, and a bending column 2 34 is fixedly installed on the upper end of the rectangular block 33.

[0037] See also Figure 5 and Figure 7The linkage part 4 includes a moving block 41, the moving block 41 is threadedly connected on the thread groove 24, the moving block 41 is symmetrically hinged with an inclined traction rod 42, the front ends of the sliding bases 12 on the left and right sides of the two front bridge clamps 1 are fixedly installed with connecting blocks 43, the ends of the inclined traction rods 42 are hinged with the corresponding connecting blocks 43, a fixing plate 44 is fixedly installed on the upper end of the front side of the base of the bridge clamp 1, a guide rod 45 is fixedly installed on the front end of the fixing plate 44, the front end of the guide rod 45 slides forward and backward and penetrates the moving block 41, and a rotating handle 46 is fixedly installed on the front end of the control rod 21.

[0038] At this time, the rotating handle on the bridge clamp 1 is rotated to clamp and fix the left and right ends of the four power busbars with the potential clamp and the current clamp. At this time, the rotating handle 46 is rotated to drive the control rod 21 to rotate. Under the cooperation of the thread groove 1 22 and the thread groove 2 23, the rectangular block 33 and the "X"-shaped plate 31 move toward each other, driving the bending column 1 32 and the bending column 2 34 to move toward each other, and the power busbar is bent. At the same time, driven by the thread groove 3 24, the moving block 41 moves forward, driving the sliding base 12 to move toward each other, so that the potential clamp and the current clamp move toward each other to adapt to the shortened power busbar.

[0039] See also Figure 3 The adjusting part 6 includes a fixed block 61. The upper middle end of the sliding base 12 at the left and right ends of each bridge clamp 1 is fixedly installed with a fixed block 61. The middle of the fixed block 61 is rotatably connected with a bidirectional screw 62. The left and right sides of the bidirectional screw 62 are respectively threadedly connected with the corresponding potential clamp and current clamp.

[0040] See also Figure 3 The anti-interference part 7 includes a retractable connecting rod 71. The ends of the bidirectional screw rods 62 on the two front bridge clamps 1 away from the center side of the bridge clamps 1 are fixedly installed with a retractable connecting rod 71 with a square cross section. A rotating round rod 72 is fixedly installed at the end of the retractable connecting rod 71. Right-angle brackets 73 are symmetrically fixedly installed at the left and right ends of the two front bridge clamps 1. The vertical section of the right-angle bracket 73 is rotatably connected to the corresponding rotating round rod 72.

[0041] See also Figure 2 The control screws on the potential clamps on the two bridge clamps 1 on the front side are fixedly connected together by a connecting rod 13, the control screws on the current clamps on the two bridge clamps 1 on the front side are fixedly connected together by a connecting rod 13, the control screws on the potential clamps on the two bridge clamps 1 on the rear side are fixedly connected together by a connecting rod 2 14, and the control screws on the current clamps on the two bridge clamps 1 on the rear side are fixedly connected together by a connecting rod 2 14.

[0042] At this time, close the test isolation cover 51, turn on the switch of the intelligent digital bridge, and power on the heating plate 11 at the same time to heat the environment inside the two test isolation boxes 5 in the middle. Monitor the ambient temperature inside the two test isolation boxes 5 in the middle through a temperature measuring instrument, and finally obtain four sets of data. The data from back to front are respectively the resistance of the unbent power bus at normal temperature, the resistance of the unbent power bus at variable temperature, the resistance of the power bus after bending at variable temperature, and the resistance of the power bus after bending at normal temperature. If the four sets of data are all within the standard range, the quality of the power bus meets the standard, otherwise it does not meet the standard.

[0043] Working principle of the present invention: Step 1: According to the size of the power bus, through the cooperation of control unit three 10, control unit two 9 and control unit one 8, the distance between the potential clamps and the current clamps on all bridge clamps 1 is synchronously adjusted to ensure that the distance is greater than 1.5 times the circumference of the cross-section of the power bus to be tested, and four power buses of the same length and size are taken out, and then the insulation layers at the left and right ends are stripped off, and then they are aligned and placed on the bridge clamps 1 respectively.

[0044] Step 2: At this time, turn the rotating handle on the bridge clamp 1 so that the potential clamp and the current clamp clamp the left and right ends of the four power busbars. At this time, the busbar bending part 3 is driven by the driving part 2 to move and bend the power busbar. At the same time, with the cooperation of the linkage part 4, the sliding base 12 moves toward each other to adapt to the shortened power busbar.

[0045] Step 3: At this time, close the test isolation cover 51, turn on the switch of the intelligent digital bridge, and power on the heating plate 11 to heat the environment inside the two test isolation boxes 5 in the middle. Monitor the ambient temperature inside the two test isolation boxes 5 in the middle through a temperature measuring instrument, and finally obtain four sets of data. The data from back to front are the resistance of the unbent power bus at normal temperature, the resistance of the unbent power bus at variable temperature, the resistance of the power bus after bending at variable temperature, and the resistance of the power bus after bending at normal temperature. If the four sets of data are all within the standard range, the quality of the power bus meets the standard, otherwise it does not meet the standard.

[0046] The device can also detect power busbars of different lengths. The two bridge clamps on the rear side test the resistance of busbar No. 1 of the same length at different temperatures, and the two bridge clamps on the front side test the resistance of busbar No. 2 of the same length at different temperatures. Busbar No. 2 is longer than busbar No. 1, and it is only necessary to drive the busbar bending part 3 to move away from the power busbar through the driving part 2. At the same time, with the cooperation of the linkage part 4, the sliding base 12 moves in reverse to adapt to the power busbar with a longer length, so as to detect the relationship between resistance and length and between resistance and temperature.

[0047] In the description of the present invention, it is necessary to understand that the terms "center", "middle", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "end", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first", "second", "number one", "number two", "one", "two" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0049] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power bus resistance performance test device, characterized in that , including a bridge fixture, the number of the bridge fixtures is four, the bridge fixtures are evenly arranged linearly from front to back, the left and right ends of the upper middle of the base of the two bridge fixtures in the middle are symmetrically fixed with heating plates for heating the detection environment of the power bus, and the two bridge fixtures on the front side are both provided with a driving part; The front and rear sides of the driving part are both provided with busbar bending parts for bending the power busbar, and the driving part is provided with linkage parts in front of the busbar bending parts. The upper left and right sides of the base of the bridge clamp are symmetrically connected to the sliding base for left and right sliding, and the upper left and right sides of the sliding base are respectively connected to the potential clamp and the current clamp for left and right sliding; A test isolation box for isolating the test environment from the external environment is fixedly installed on each bridge clamp, and a test isolation cover made of transparent material is slidably connected to the upper end of the test isolation box. Temperature measuring instruments are provided on the two middle test isolation boxes, and an adjustment part is provided on the sliding bases at the left and right ends of each bridge clamp. The adjustment parts on the two front bridge clamps are provided with anti-interference parts, and a control part 1 is commonly provided between two anti-interference parts adjacent to each other on the same side, a control part 2 is commonly provided between two adjustment parts adjacent to each other on the same side on the two rear bridge clamps, and a control part 3 is commonly provided between control part 1 and control part 2.

2. A power bus resistance performance testing device according to claim 1, characterized in that: The driving part includes a control rod, and the middle parts of the two bridge clamps on the front side are connected to the control rod for rotation together. A group of distance-controlled screw grooves are symmetrically opened on the front and back of the control rod. The distance-controlled screw groove group is composed of a screw groove 1 and a screw groove 2 on the front and back sides. The rotation direction of the screw groove 1 and the screw groove 2 are opposite. A screw groove 3 is opened on the control rod and located in front of the screw groove 1. The rotation direction of the screw groove 3 is the same as that of the screw groove 2.

3. A power bus resistance performance testing device according to claim 2, characterized in that: The busbar bending portion includes an I-shaped plate, a I-shaped plate is threadedly connected on a thread groove 1, the I-shaped plate is slidably connected to the base of the bridge fixture in a front-to-back manner, a bending column 1 is symmetrically fixedly installed on the upper end of the I-shaped plate, a rectangular block is threadedly connected on a thread groove 2, the rectangular block is slidably connected to the base of the bridge fixture in a front-to-back manner, and a bending column 2 is fixedly installed on the upper end of the rectangular block.

4. A power bus resistance performance testing device according to claim 2, characterized in that: The linkage part includes a moving block, which is threadedly connected to the moving block on three threaded grooves, and the moving block is symmetrically hinged with an inclined traction rod. The front ends of the sliding bases on the left and right sides of the two front bridge clamps are fixedly installed with connecting blocks, and the ends of the inclined traction rods are hinged to the corresponding connecting blocks. A fixed plate is fixedly installed on the upper front end of the base of the bridge clamp, and a guide rod is fixedly installed on the front end of the fixed plate. The front end of the guide rod slides forward and backward and passes through the moving block, and a rotating handle is fixedly installed on the front end of the control rod.

5. A power bus resistance performance testing device according to claim 1, characterized in that: The adjustment part includes a fixed block, and a fixed block is fixedly installed on the upper middle end of the sliding base at the left and right ends of each bridge clamp. A bidirectional screw rod 1 is rotatably connected in the middle of the fixed block, and the left and right sides of the bidirectional screw rod 1 are respectively threadedly connected with the corresponding potential clamp and current clamp.

6. A power bus resistance performance testing device according to claim 5, characterized in that: The anti-interference part includes a retractable connecting rod, and the ends of the bidirectional screws on the two front bridge clamps away from the center side of the bridge clamps are fixedly installed with a retractable connecting rod with a square cross-section, and a rotating round rod is fixedly installed at the end of the retractable connecting rod. Right-angle brackets are symmetrically fixedly installed at the left and right ends of the two front bridge clamps, and the vertical sections of the right-angle brackets are rotatably connected to the corresponding rotating round rods.

7. A power bus resistance performance testing device according to claim 6, characterized in that: The control part 1 includes a pulley 1, and one end of the rotating round rod 1 away from the center side of the bridge clamp is fixedly installed with a pulley 1, and two adjacent pulleys 1 in front and behind are connected together through a belt transmission.

8. A power bus resistance performance testing device according to claim 5, characterized in that: The control part 2 includes a rotating round rod 2, and the two ends of the bidirectional screw rods 1 on the two rear bridge clamps away from the center side of the bridge clamp are fixedly installed with the rotating round rod 2, and the ends of the rotating round rod 2 away from the center side of the bridge clamp are fixedly installed with pulley 2, and the two adjacent pulleys 2 are connected together through belt 2 transmission.

9. A power bus resistance performance testing device according to claim 7, characterized in that: The control part three includes a pulley three, and the ends of the rotating round rod one and the rotating round rod two in the middle are fixedly installed with pulleys three, and the front and rear adjacent pulleys are connected together through belt three transmission, and the two bidirectional screw rods one on the rearmost electric bridge clamp are fixedly connected with a linkage shaft, and the right end of the rotating round rod two on the right bidirectional screw rod one on the rearmost electric bridge clamp is fixedly installed with a distance control handle.

10. A power bus resistance performance testing device according to claim 1, characterized in that: The control screws on the potential clamps on the two bridge clamps on the front side are fixedly connected together by connecting rod 1, the control screws on the current clamps on the two bridge clamps on the front side are fixedly connected together by connecting rod 1, the control screws on the potential clamps on the two bridge clamps on the rear side are fixedly connected together by connecting rod 2, and the control screws on the current clamps on the two bridge clamps on the rear side are fixedly connected together by connecting rod 2.

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