Mechanical characteristic and loop resistance testing equipment for lower disconnectors

Abstract

This utility model discloses a testing device for the mechanical characteristics and circuit resistance of a lower disconnect switch, relating to the field of lower disconnect switch testing technology. The device includes a frame; a support assembly is provided inside the frame; the support assembly includes a fixed plate fixedly installed with the frame; two symmetrical transverse slide rails are provided on the fixed plate; a carrier plate is movably mounted on the transverse slide rails via sliders; limit blocks are fixedly installed at the four corners of the carrier plate; double-round-head through slots are provided on both the carrier plate and the fixed plate; multiple limit blocks are installed in conjunction with the lower disconnect switch; a robot gripper places the lower disconnect switch into the limit blocks at the top of the carrier plate, effectively ensuring the accuracy of the lower disconnect switch's position during placement. After placement, the robot sends a signal for the next action, and the lower disconnect switch is manually pushed to one side of the housing to achieve a dynamic sealing connection between the lower disconnect switch and the break-in control mechanism.

Description

Technical Field

[0001] This utility model specifically relates to the field of testing technology for lower disconnect switches, and more specifically to a testing device for the mechanical characteristics and circuit resistance of lower disconnect switches. Background Technology

[0002] Lower disconnect switches play a crucial role in power systems, performing essential tasks such as power isolation and switching operations. Their mechanical characteristics, including opening and closing time, speed, and synchronicity, directly affect the reliability and accuracy of the switch's operation. Abnormal mechanical characteristics can prevent the switch from opening and closing properly, impacting the normal operation of the power system and potentially causing safety accidents. Loop resistance is a key indicator of the lower disconnect switch's conductivity. Due to long-term operation, contact oxidation, and poor contact, the loop resistance may increase. This can cause excessive heat generation when the switch conducts current, accelerating equipment aging and potentially leading to contact burnout, short circuits, and other faults, threatening the safe and stable operation of the power system.

[0003] After the lower disconnector is assembled, due to the cumulative error of the parts, the grounding may not be in place and the resistance value may not be within the specified range. It is necessary to manually rotate the opening and closing shaft and repeatedly run it 50-60 times to confirm that there is no jamming or dead point when opening and closing. The labor intensity is very high and the opening and closing overtravel data is inaccurate.

[0004] Traditional mechanical characteristic testing methods often rely on manual observation and simple measuring tools, resulting in low precision, large errors, and an inability to comprehensively and accurately obtain various mechanical characteristic parameters of the switch. For example, manual measurement of opening and closing time may be affected by human reaction speed, leading to inaccurate measurement results. For some complex mechanical characteristic parameters, such as the movement trajectory and acceleration of the contacts, traditional methods are even more difficult to measure.

[0005] The commonly used bridge method for measuring loop resistance has a small test current, which makes it difficult to overcome the influence of oxide film and oil on the contact surface, easily leading to overestimation of the measurement results and failing to accurately reflect the actual value of the loop resistance. Moreover, traditional testing equipment also has shortcomings in terms of anti-interference ability, measurement accuracy and automation, and cannot meet the requirements of modern power systems for high-precision and high-reliability testing. Utility Model Content

[0006] The purpose of this invention is to provide a device for testing the mechanical characteristics and circuit resistance of a lower disconnect switch. In this device, the lower disconnect switch is simply placed in the designated position, and the device will connect the lower disconnect switch to the spring mechanism. Then, when the power is connected, the device will automatically perform actions such as grounding and grounding opening, and can simultaneously detect some of the required data; thus solving the problems of the aforementioned background technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A testing device for the mechanical characteristics and circuit resistance of a lower disconnector switch includes a frame; a support assembly is provided inside the frame; the support assembly includes a fixed plate fixedly installed with the frame; two symmetrical transverse slide rails are provided on the fixed plate; a carrier plate is movably mounted on the transverse slide rails via sliders; limit blocks are fixedly installed at the four corners of the carrier plate; double round-head through slots are provided on both the carrier plate and the fixed plate; multiple limit blocks are installed in conjunction with the lower disconnector switch.

[0009] The box on one side of the frame is equipped with a circuit breaker mechanism and a break-in control mechanism; two symmetrical rotary cylinders are also fixedly installed on the side wall of the box.

[0010] As a further technical solution of this utility model, loop resistance testing components are provided on both the upper and lower sides of the supporting component; the loop resistance testing component includes a mounting frame fixedly installed with the top crossbeam of the frame; an electric push cylinder is fixedly installed on the mounting frame; the electric push cylinder is fixedly installed with a moving plate on the other side of the mounting frame through a fixing block; a longitudinal slide rail is provided between the moving plate and the mounting frame.

[0011] As a further technical solution of this utility model, multiple cylinders are fixedly installed on the bottom side of the movable plate away from the mounting frame; the cylinder push rod is fixedly installed with an opening and closing switch via an L-shaped plate.

[0012] As a further technical solution of this utility model, the loop resistance testing assembly also includes a vertical plate; the vertical plate is fixedly installed on the bottom of the fixed plate; the structure on the vertical plate is the same as the structure on the movable plate;

[0013] As a further technical solution of this utility model, a side push rod is fixedly installed on the support beam at the end of the frame away from the box body by means of an installation plate; the push rod of the side push rod is fixedly installed with the push plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In use, the lower isolating switch is placed into the limiting block on the top of the carrier plate by a robot gripper, which effectively ensures the accuracy of the lower isolating switch position during placement. After placement, the robot sends a signal for the next action, and the lower isolating switch is pushed to one side of the box by manual means to achieve dynamic sealing connection between the lower isolating switch and the break-in control mechanism.

[0016] In this utility model, after the connection is completed, the push plate is moved forward by the side push rod to make the push plate contact one end of the lower disconnect switch. At the same time, the rotary cylinder on the side wall of the box rotates to make the lever contact the lower disconnect switch, thereby effectively ensuring the fixation of the lower disconnect switch and ensuring the stability of the lower disconnect switch during testing.

[0017] In this invention, an aging test is first conducted. The break-in test between the break-in control mechanism and the lower disconnect switch is achieved through a controller. After the set number of tests is reached, the break-in test is stopped. Then, a circuit resistance test is conducted. The controller drives the electric push cylinder to slide the moving plate downward along the longitudinal slide rail. The cylinder push rod extends, and at the same time, the cylinder on the upright plate moves synchronously to achieve contact between the opening and closing switch and the copper blocks above and below the lower disconnect switch to form a circuit. The opening and closing switch is manually controlled, and the resistance value is judged by the operator to determine whether it is compliant.

[0018] In this invention, during equipment operation, the circuit breaker mechanism drives the grounding and closing of the lower disconnect switch, and the disconnecting mechanism drives the blade switch to open and close, effectively achieving automated detection. After detection, the side push rod and rotary cylinder are reset, and the lower disconnect switch is separated from the dynamic seal manually. Then, the lower disconnect switch is removed by a robot gripper. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This utility model Figure 1 Another perspective structural diagram.

[0021] Figure 3 This utility model Figure 1 A schematic diagram of the rear bottom structure.

[0022] Figure 4 This utility model Figure 1 A schematic diagram of the internal structure of the middle box.

[0023] Figure 5 This utility model Figure 4 A breakdown diagram.

[0024] Figure 6 This utility model Figure 5 Schematic diagram of the three-dimensional structure of the central support component.

[0025] Figure 7 This utility model Figure 5 A three-dimensional structural diagram of the middle loop resistance testing component.

[0026] In the diagram: 1-Frame, 2-Box, 3-Circuit resistance test assembly, 30-Mounting bracket, 31-Electric pusher cylinder, 32-Moving plate, 33-L-shaped plate, 34-Opening and closing, 35-Upright plate, 36-Cylinder, 37-Longitudinal slide rail, 4-Lower disconnector switch, 5-Support assembly, 50-Fixing plate, 51-Carrier plate, 52-Transverse slide rail, 53-Limit block, 6-Side push rod, 7-Push plate, 8-Circuit breaker mechanism, 9-Run-in control mechanism, 10-Rotary cylinder. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-7 In this embodiment of the utility model, the mechanical characteristics and circuit resistance testing equipment for the lower disconnect switch includes a frame 1; a support assembly 5 is provided inside the frame 1; the support assembly 5 includes a fixing plate 50 fixedly installed with the frame 1; two symmetrical transverse slide rails 52 are provided on the fixing plate 50; a carrier plate 51 is movably installed on the transverse slide rails 52 via a slider; limit blocks 53 are fixedly installed on the four corners of the carrier plate 51; double round head through slots are provided on both the carrier plate 51 and the fixing plate 50; multiple limit blocks 53 are installed in conjunction with the lower disconnect switch 4.

[0029] The box 2 on one side of the frame 1 is equipped with a circuit breaker mechanism 8 and a break-in control mechanism 9; two symmetrical rotary cylinders 10 are also fixedly installed on the side wall of the box 2.

[0030] By adopting the above technical solution, during use, the lower isolating switch 4 is placed into the limiting block 53 on the top of the carrier plate 51 by the robot gripper, which effectively ensures the accuracy of the position of the lower isolating switch 4 during placement. After placement, the robot sends a signal for the next action, and the lower isolating switch 4 is pushed to one side of the housing 2 by manual means, so as to realize the dynamic sealing connection between the lower isolating switch 4 and the running-in control mechanism 9.

[0031] In this embodiment, loop resistance testing components 3 are provided on both the upper and lower sides of the support component 5; the loop resistance testing component 3 includes a mounting frame 30 fixedly installed with the top crossbeam of the frame 1; an electric push cylinder 31 is fixedly installed on the mounting frame 30; the electric push cylinder 31 is fixedly installed with a moving plate 32 on the other side of the mounting frame 30 through a fixing block; a longitudinal slide rail 37 is provided between the moving plate 32 and the mounting frame 30.

[0032] In this embodiment, a plurality of cylinders 36 are fixedly installed on the bottom side of the movable plate 32 away from the mounting frame 30; the push rod of the cylinder 36 is fixedly installed with a switch 34 via an L-shaped plate 33.

[0033] By adopting the above technical solution, after the connection is completed, the push plate 7 is moved forward by the side push rod 6, so that the push plate 7 contacts one end of the lower disconnect switch 4. At the same time, the rotary cylinder 10 on the side wall of the housing 2 rotates, so that the lever contacts the lower disconnect switch 4, thereby effectively ensuring the fixation of the lower disconnect switch 4 and ensuring the stability of the lower disconnect switch 4 during testing.

[0034] Furthermore, an aging test is first conducted. The break-in test between the break-in control mechanism 9 and the lower disconnect switch 4 is achieved through the controller. After the set number of times is reached, the break-in test is stopped. Then, a circuit resistance test is conducted. The controller enables the electric push cylinder 31 to drive the moving plate 32 to slide downward along the longitudinal slide rail 37. The push rod of the cylinder 36 extends. At the same time, the cylinder 36 on the upright plate 35 moves synchronously to make contact between the opening and closing switch 34 and the copper blocks above and below the lower disconnect switch 4 to form a circuit. The opening and closing of the switch is manually controlled, and the resistance value is judged by the human to determine whether it is compliant.

[0035] In this embodiment, the loop resistance testing assembly 3 further includes a vertical plate 35; the vertical plate 35 is fixedly installed at the bottom of the fixed plate 50; the structure on the vertical plate 35 is the same as the structure on the movable plate 32.

[0036] A side push rod 6 is fixedly installed on the support beam at the end of the frame 1 away from the box 2 by a mounting plate; the push rod of the side push rod 6 is fixedly installed with the push plate 7.

[0037] By adopting the above technical solution, during equipment operation, the circuit breaker mechanism 8 drives the grounding opening and closing of the lower disconnect switch 4, and the disconnecting mechanism drives the blade to open and close, effectively achieving automated detection. After the detection is completed, the side push rod 6 and the rotary cylinder 10 are reset, and the lower disconnect switch 4 is separated from the dynamic seal by manual means. Then, the lower disconnect switch 4 is removed by the robot gripper.

[0038] The working principle of this utility model is as follows: When in use, the lower isolating switch 4 is placed into the limiting block 53 on the top of the carrier plate 51 by the robot gripper, which effectively ensures the accuracy of the position of the lower isolating switch 4 during placement. After placement, the robot sends a signal for the next action, and the lower isolating switch 4 is pushed to one side of the box 2 by manual means, so as to realize the dynamic sealing connection between the lower isolating switch 4 and the running-in control mechanism 9.

[0039] After the connection is completed, the push plate 7 is moved forward by the side push rod 6, so that the push plate 7 contacts one end of the lower disconnect switch 4. At the same time, the rotary cylinder 10 on the side wall of the housing 2 rotates, so that the lever contacts the lower disconnect switch 4, thereby effectively ensuring the fixation of the lower disconnect switch 4 and ensuring the stability of the lower disconnect switch 4 during testing.

[0040] First, an aging test is conducted. The break-in test between the break-in control mechanism 9 and the lower disconnect switch 4 is achieved through the controller. After the set number of times is reached, the break-in test is stopped. Then, a circuit resistance test is conducted. The controller enables the electric push cylinder 31 to drive the moving plate 32 to slide downward along the longitudinal slide rail 37. The push rod of the cylinder 36 extends. At the same time, the cylinder 36 on the upright plate 35 moves synchronously to make contact between the opening and closing switch 34 and the copper blocks above and below the lower disconnect switch 4 to form a circuit. The opening and closing switch is manually controlled, and the resistance value is judged by the human to determine whether it is compliant.

[0041] During equipment operation, the circuit breaker mechanism 8 drives the grounding of the lower disconnector switch 4 to open and close, and the disconnector mechanism drives the blade switch to open and close, effectively achieving automated detection. After the detection is completed, the side push rod 6 and the rotary cylinder 10 are reset, and the lower disconnector switch 4 is separated from the dynamic seal manually. Then, the lower disconnector switch 4 is removed by the robot gripper.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A test device for mechanical properties and loop resistance of a disconnector, characterized in that: The system includes a frame (1); the frame (1) is equipped with a support assembly (5); the support assembly (5) includes a fixing plate (50) fixedly installed with the frame (1); the fixing plate (50) is provided with two symmetrical transverse slide rails (52); a carrier plate (51) is movably installed on the transverse slide rails (52) via a slider; limit blocks (53) are fixedly installed on the four corners of the carrier plate (51); double round head through slots are provided on both the carrier plate (51) and the fixing plate (50); multiple limit blocks (53) are installed in conjunction with the lower isolating switch (4); The box (2) on one side of the frame (1) is equipped with a circuit breaker mechanism (8) and a break-in control mechanism (9); two symmetrical rotary cylinders (10) are also fixedly installed on the side wall of the box (2).

2. The testing equipment for the mechanical characteristics and loop resistance of the lower disconnector switch according to claim 1, characterized in that: The support component (5) is provided with loop resistance test components (3) on both the upper and lower sides; the loop resistance test component (3) includes a mounting frame (30) fixedly installed with the top crossbeam of the frame (1); an electric push cylinder (31) is fixedly installed on the mounting frame (30); the electric push cylinder (31) is fixedly installed with the moving plate (32) on the other side of the mounting frame (30) through a fixing block; a longitudinal slide rail (37) is provided between the moving plate (32) and the mounting frame (30).

3. The testing equipment for the mechanical characteristics and loop resistance of the lower disconnector switch according to claim 2, characterized in that: Multiple cylinders (36) are fixedly installed on the bottom side of the movable plate (32) away from the mounting frame (30); the push rod of the cylinder (36) is fixedly installed with a switch (34) through an L-shaped plate (33).

4. The testing equipment for the mechanical characteristics and loop resistance of the lower disconnector switch according to claim 2, characterized in that: The loop resistance test assembly (3) also includes a vertical plate (35); the vertical plate (35) is fixedly installed at the bottom of the fixed plate (50); the structure on the vertical plate (35) is the same as the structure on the movable plate (32).

5. The testing equipment for the mechanical characteristics and loop resistance of the lower disconnector switch according to claim 4, characterized in that: A side push rod (6) is fixedly installed on the end support beam away from the box (2) of the frame (1) by a mounting plate; the push rod of the side push rod (6) is fixedly installed with the push plate (7).

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