A primary and secondary fusion pole vacuum circuit breaker and a detection device thereof

Abstract

The present application relates to the technical field of electrical detection, in particular to a primary and secondary fusion pole vacuum circuit breaker and its detection equipment, comprising a withstand voltage detection device, the withstand voltage detection device comprising a placing part, a plurality of traction parts arranged on the outer wall of the placing part, a plurality of transmission parts arranged in the inside, a tightening part arranged on the outside, and a wire clamping part arranged at the end position of the placing part. The primary and secondary fusion pole vacuum circuit breaker and its detection equipment, the upward movement of the sliding block synchronously drives the connecting rod, which moves along the guide groove, drives the mobile wire clamp to close the fixed wire clamp. The clamping structure automatically completes the reliable clamping and fixing of the power line while adjusting the passing position, combined with the passing structure, the whole system significantly improves the contact reliability, simplifies the operation steps, improves the detection efficiency, and effectively avoids the situation of poor contact or operation error caused by manual passing and clamping.

Description

Technical Field

[0001] This invention relates to the field of electrical testing technology, and more specifically, to a primary and secondary integrated pole-mounted vacuum circuit breaker and its testing equipment. Background Technology

[0002] The primary and secondary integrated pole-mounted vacuum circuit breaker is an outdoor power distribution device that integrates a traditional circuit breaker with an intelligent terminal. It adopts vacuum arc extinguishing technology to achieve reliable interruption, and integrates electronic sensors, protection control units and communication modules. It can sense the operating status in real time, perform remote opening and closing and fault isolation, significantly improving the automation level and power supply reliability of the power distribution network. Its pole-mounted circuit breaker is exposed to the outdoors for a long time, and is subject to sun and rain, dirt and dust accumulation and drastic temperature changes. It has a high risk of insulation aging. Therefore, withstand voltage testing is the core guarantee for preventing such serious accidents and is a mandatory key test item.

[0003] Patent application CN202123089073.7 discloses a vacuum circuit breaker withstand voltage testing device, which includes a housing fixed on a movable base. The housing's interior is divided into an upper placement cavity, a middle drawer mounting cavity, and a lower first mounting cavity. Second mounting cavities are provided on both side walls of the housing. This device can not only be used for withstand voltage testing, but also allows the withstand voltage monitor to be returned to the placement cavity for concealment when not in use, thus protecting it and extending its service life.

[0004] However, when performing withstand voltage tests on vacuum circuit breakers, operators must manually thread the test leads one by one into the grooves of the circuit breaker's contact blocks. This is not only time-consuming and labor-intensive, but manual threading is also prone to wire crossing, omissions, or misalignment, resulting in uneven contact pressure on the contact surface and insufficient contact in some grooves, creating a potential risk of partial discharge. In addition, bolt crimping or manual clamping requires independent operation, and the clamping force depends entirely on the operator's feel. Insufficient clamping force can cause the lead wires to vibrate and shift during high-voltage testing, leading to increased contact resistance or even arcing. Furthermore, threading and clamping are performed in separate steps, requiring multiple adjustments to the positioning, which prolongs the equipment preparation time.

[0005] In view of this, we propose a primary and secondary integrated pole-mounted vacuum circuit breaker and its testing equipment. Summary of the Invention

[0006] The purpose of this invention is to provide a primary and secondary integrated pole-mounted vacuum circuit breaker and its testing equipment, which uses an electric actuator to drive a rack, thereby causing the gear and the wire pulley to rotate, tightening the connecting rope, and driving the wire clamping part, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A primary and secondary integrated pole-mounted vacuum circuit breaker testing device includes a withstand voltage testing device. The withstand voltage testing device includes a placement part, several traction parts disposed on the outer wall of the placement part, several transmission parts disposed inside the placement part, a tightening part disposed on the outer side of the placement part, and a wire clamping part disposed at the end of the placement part.

[0009] The traction unit includes three regularly distributed telescopic frames and racks at their ends;

[0010] The transmission unit includes a gear that meshes with a rack and a reel that rotates with it;

[0011] In this configuration, when the telescopic frame in the middle moves down, the racks at both ends engage with the gears, driving the gears to rotate synchronously with the reel.

[0012] The tightening part includes a pair of sliders, a power line connected between the pair of upward sliders, and a connecting rope connected between the sliders and the reel;

[0013] In this configuration, when the reel rotates, the connecting rope is wrapped around its outer side, which pulls the slider upward, thereby adjusting the height of both ends of the power line;

[0014] The clamping part includes a fixed clamp, movable clamps symmetrically arranged on the fixed clamp, and a connecting rod snapped onto the slider. The movable clamp has a guide groove inside.

[0015] In this configuration, as the connecting rod moves upward with the slider, it moves along the guide groove, driving the movable wire clamp to move towards the fixed wire clamp, thereby clamping the power supply wire.

[0016] In the technical solution of the present invention, the placement part includes a base plate, a plurality of telescopic rods regularly snapped and fixed to the top surface of the base plate, and a placement plate snapped to the top of the telescopic rods.

[0017] In the technical solution of the present invention, a number of regularly distributed and through-holes are provided on the outer wall of the placement plate, and three regularly distributed limiting grooves are provided between two adjacent through-holes. A sliding rod is engaged between the upper and lower end walls of the through-holes.

[0018] The above setup adjusts the height of the traction and tightening parts by adjusting the height of the telescopic rod.

[0019] In the technical solution of the present invention, the traction part further includes an electric push rod disposed under the bottom surface of the central telescopic frame and a pair of hooks welded to the outer wall of the telescopic frame. The electric push rod is fixedly connected to the outer wall of the placement plate by screws. The telescopic frame is slidably connected to the inside of the limiting slide groove. The rack is snapped and fixed to the telescopic frame. The hooks located in the middle face upward and the hooks located on both sides face downward.

[0020] In the technical solution of the present invention, the transmission part further includes a rotating shaft that is engaged between the gear and the reel, and the rotating shaft is rotatably connected to the inside of the placement plate.

[0021] In the technical solution of the present invention, the slider is slidably connected to the inside of the through groove on the plate and sleeved on the outside of the slide rod. The end of the slider is integrally formed with a terminal. The two ends of the wire are snapped into the inside of the terminal. One end of the connecting rope is attached to the top surface of the slider and the other end is wrapped around the outside of the spool.

[0022] The above configuration transmits power to the electric actuator by setting transmission units on both sides of the traction unit in the middle, driving the traction units on both sides to move in opposite directions.

[0023] In the technical solution of the present invention, the tightening part further includes a spring sleeved on the outside of the slide bar and a number of guide wheels for guiding the connecting rope. The spring force pushes the slider to move downward, and the guide wheels are locked and fixed on the outer wall of the placement plate.

[0024] This setup uses the power of an electric actuator, along with a reel and connecting rope, to allow the power cable to alternately wind up and down through several electrical blocks. Then, by moving the slider upwards, the power cable is kept taut.

[0025] In the technical solution of the present invention, the clamping part further includes a fixing rod that is snapped and fixed on the outer wall of the fixing clamp and an external wire that is snapped and fixed on the top surface of the fixing clamp and used for connecting an external power supply. The fixing rod is snapped and fixed on the outer wall of the placement plate.

[0026] In the technical solution of the present invention, the movable clamp is slidably connected to the inside of the fixed clamp and the outside of the fixed rod, the size of the connecting rod is adapted to the guide groove, and the end of the connecting rod is snapped and fixed to the outer wall of the connector.

[0027] This feature allows the power cable to be reliably clamped and fixed after it alternately passes up and down through the groove of the junction block.

[0028] On the other hand, the present invention also provides a primary and secondary integrated pole-mounted vacuum circuit breaker, which is tested using the aforementioned primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment, including a vacuum circuit breaker device. The vacuum circuit breaker device includes an electrical body, three vacuum tubes fixedly connected to the top surface of the electrical body by bolts, a current transformer fixedly connected to the outer wall of the vacuum tubes by bolts, three insulators parallel to the vacuum tubes and fixedly connected to the top surface of the electrical body by bolts, an isolating blade rotatably connected between the current transformers and the insulators by hinges, and a pull rod snapped and fixed to the bottom surface of the isolating blade. The invention is characterized in that: a small contact block is welded and fixed to the end of the terminal plate at the end of each vacuum tube and insulator, and grooves are provided on the outer walls of both the upper and lower ends of the contact block to increase the contact area with the conductor.

[0029] This design, by creating grooves on the outer walls at both ends of the junction block, allows the power wire to better transmit current, thus improving the reliability of the test data.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. This primary and secondary integrated column-mounted vacuum circuit breaker and its testing equipment drive a rack and pinion via an electric actuator, which in turn rotates the gear and the reel, tightens the connecting rope, and controls the rise and fall of the slider in the through groove on the plate. This achieves automatic adjustment of the position of the conductor wire alternately winding up and down on the groove of the connecting block, which ensures full contact between the conductor wire and the groove of the connecting block. This lays the foundation for subsequent reliable electrical connection and withstand voltage test without relying on manual labor.

[0032] 2. In this primary and secondary integrated pole-mounted vacuum circuit breaker and its testing equipment, the upward movement of the slider synchronously drives the connecting rod, which moves along the guide groove and drives the moving wire clamp to close towards the fixed wire clamp. This clamping structure automatically and reliably clamps and fixes the conducting wire while adjusting the winding position. Combined with the winding structure, the entire system significantly improves contact reliability, simplifies operation steps, improves testing efficiency, and effectively avoids poor contact or operational errors that may occur due to manual winding and clamping. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the withstand pressure testing device in this invention;

[0035] Figure 3 This is a schematic diagram of the placement part in the present invention;

[0036] Figure 4 This is a partial structural schematic diagram of the pressure resistance testing device of the present invention;

[0037] Figure 5 This is one of the structural schematic diagrams of the traction unit in this invention;

[0038] Figure 6 This is the second schematic diagram of the traction unit in this invention;

[0039] Figure 7 This is a schematic diagram of the transmission unit in the present invention;

[0040] Figure 8 This is a schematic diagram of the tightening part in this invention;

[0041] Figure 9 This is a schematic diagram of the clamping part in the present invention;

[0042] Figure 10 This is a schematic diagram of the vacuum circuit breaker device in this invention;

[0043] Figure 11 This is a schematic diagram of the junction block in the present invention;

[0044] Explanation of reference numerals in the attached figures:

[0045] 100. Pressure resistance testing device; 110. Placement part; 111. Base plate; 112. Telescopic rod; 113. Placement plate; 1130. Plate surface through groove; 1131. Limiting slide groove; 114. Slide rod; 120. Traction part; 121. Electric push rod; 122. Telescopic frame; 123. Hook; 124. Rack; 130. Transmission part; 131. Rotating shaft; 132. Gear; 133. Thread pulley; 140. Tightening part; 141. Slider; 1410. Wire connector; 142. Wire; 143. Connecting rope; 144. Spring; 145. Guide wheel; 150. Wire clamping part; 151. Fixed wire clamp; 152. Fixed rod; 153. Moving wire clamp; 1530. Guide groove; 154. Connecting rod; 155. External wiring;

[0046] 200. Vacuum circuit breaker; 210. Electrical body; 220. Vacuum tube; 230. Current transformer; 240. Insulator; 250. Isolating knife; 260. Pull rod; 270. Connecting block. Detailed Implementation

[0047] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0048] Please see Figures 1-3 As shown, this embodiment provides a technical solution:

[0049] A primary and secondary integrated pole-mounted vacuum circuit breaker testing device includes a withstand voltage testing device 100. The withstand voltage testing device 100 includes a placement part 110, a plurality of traction parts 120 disposed on the outer wall of the placement part 110, a plurality of transmission parts 130 disposed inside the placement part 110, a tightening part 140 disposed on the outer side of the placement part 110, and a wire clamping part 150 disposed at the end of the placement part 110.

[0050] Specifically, the placement part 110 includes a base plate 111, a plurality of telescopic rods 112 regularly snapped and fixed to the top surface of the base plate 111, and a placement plate 113 snapped to the top of the telescopic rods 112.

[0051] Furthermore, the outer wall of the placement plate 113 is provided with several regularly distributed and continuous plate surface grooves 1130, and the placement plate 113 is provided with three regularly distributed limiting slide grooves 1131 between two adjacent plate surface grooves 1130, and slide rods 114 are engaged between the upper and lower end groove walls of the plate surface grooves 1130.

[0052] Furthermore, the base plate 111 provides a platform for placing the telescopic rod 112, and the height of the placing plate 113 can be adjusted by the telescopic rod 112. The plate surface through groove 1130 and the limiting slide groove 1131 provide a movement range for the internal structure of the tightening part 140 and the traction part 120, respectively. This setting adjusts the height of the traction part 120 and the tightening part 140 by adjusting the height of the telescopic rod 112.

[0053] Please see Figures 1-6 As shown, in this embodiment, the traction unit 120 includes three regularly distributed telescopic frames 122 and racks 124 at their ends.

[0054] Specifically, the traction unit 120 also includes an electric push rod 121 disposed under the bottom surface of the central telescopic frame 122 and a pair of hooks 123 welded to the outer wall of the telescopic frame 122. The electric push rod 121 is fixedly connected to the outer wall of the placement plate 113 by screws. The telescopic frame 122 is slidably connected to the inside of the limiting slide groove 1131. The rack 124 is snapped and fixed to the telescopic frame 122. The hook 123 in the middle has its opening facing upward, and the hooks 123 on both sides have their opening facing downward.

[0055] Furthermore, after the control electric actuator 121 is activated, it drives the telescopic frame 122 located in the middle to move upward, so that the racks 124 on both sides cooperate with the transmission part 130 to drive the telescopic frames 122 on both sides to move downward.

[0056] Please see Figures 4-7As shown, in this embodiment, the transmission unit 130 includes a gear 132 that meshes with the rack 124 and a reel 133 that rotates with it. When the telescopic frame 122 in the middle moves down, the racks 124 at both ends mesh with the gear 132, driving the gear 132 and the reel 133 to rotate synchronously.

[0057] Specifically, the transmission unit 130 also includes a rotating shaft 131 that is engaged between the gear 132 and the reel 133, and the rotating shaft 131 is rotatably connected to the interior of the placement plate 113.

[0058] Furthermore, after the telescopic frame 122 in the middle moves upward, the racks 124 on both sides of it mesh with the gears 132, causing them to rotate. Then, the gears 132 mesh with the racks 124 on the other side, driving the telescopic frames 122 on both sides to move downward. When the gears 132 rotate, the rotating shaft 131 drives the reel 133 to rotate synchronously. This arrangement transmits the power of the electric push rod 121 by setting transmission parts 130 on both sides of the traction part 120 in the middle, driving the traction parts 120 on both sides to move in opposite directions.

[0059] Please see Figures 4-8 As shown, in this embodiment, the tightening part 140 includes a pair of sliders 141, a power line 142 connected between the pair of upward sliders, and a connecting rope 143 connected between the sliders 141 and the reel 133. When the reel 133 rotates, the connecting rope 143 is wrapped around its outer side, thereby pulling the sliders 141 upward and adjusting the height of both ends of the power line 142.

[0060] Specifically, the slider 141 is slidably connected to the inside of the through groove 1130 on the plate and sleeved on the outside of the slide rod 114. The end of the slider 141 is integrally formed with a connector 1410. The two ends of the wire 142 are snapped into the inside of the connector 1410 at its end. One end of the connecting rope 143 is attached to the top surface of the slider 141, and the other end is wrapped around the outside of the reel 133.

[0061] Furthermore, the tightening part 140 also includes a spring 144 sleeved on the outside of the slide bar 114 and several guide wheels 145 for guiding the connecting rope 143. The elastic force of the spring 144 pushes the slider 141 to move downward, and the guide wheels 145 are snapped and fixed on the outer wall of the placement plate 113.

[0062] Furthermore, after the reel 133 rotates, the connecting rope 143 is wrapped around its outer side, which in turn pulls the slider 141 to move upward in the through groove 1130 on the plate surface, thereby adjusting the height of both ends of the wire 142 so that the wire 142 can alternately pass up and down through the contact block 270, and make full contact between the wire 142 and the groove on the contact block 270. A multimeter is used to check the continuity of the circuit of the wire 142 to ensure that there is no short circuit or open circuit. This setting is achieved by the power of the electric push rod 121, in conjunction with the reel 133 and the connecting rope 143, so that the wire 142 alternately passes up and down through several contact blocks 270, and then the upward movement of the slider 141 ensures that the wire 142 is in a taut state.

[0063] Please see Figures 8-9 As shown, in this embodiment, the wire clamping part 150 includes a fixed wire clamp 151, a movable wire clamp 153 symmetrically arranged on the fixed wire clamp 151, and a connecting rod 154 clamped on the slider 141. The movable wire clamp 153 has a guide groove 1530. When the connecting rod 154 moves upward with the slider 141, it moves along the guide groove 1530 to drive the movable wire clamp 153 to move towards the fixed wire clamp 151, thereby clamping the wire 142.

[0064] Specifically, the clamping part 150 also includes a fixing rod 152 that is snapped onto the outer wall of the fixing clamp 151 and an external wire 155 that is snapped onto the top surface of the fixing clamp 151 and used for connecting to an external power supply. The fixing rod 152 is snapped onto the outer wall of the placement plate 113.

[0065] Furthermore, the movable clamp 153 is slidably connected to the inside of the fixed clamp 151 and the outside of the fixed rod 152. The size of the connecting rod 154 is adapted to the guide groove 1530, and the end of the connecting rod 154 is snapped and fixed to the outer wall of the connector 1410.

[0066] Furthermore, when the slider 141 moves upward in the through groove 1130 on the plate, it drives the connecting rod 154 to move upward as well, allowing the connecting rod 154 to move along the guide groove 1530, thereby driving the movable wire clamp 153 to move towards the fixed wire clamp 151, and thus clamping and fixing the wire 142. This setting enables the wire 142 to be reliably clamped and fixed automatically after it alternately passes up and down on the groove of the contact block 270.

[0067] Please see Figures 10-11As shown, a primary and secondary integrated pole-mounted vacuum circuit breaker of the present invention is tested using the aforementioned primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment. The equipment includes a vacuum circuit breaker device 200, comprising an electrical body 210, three vacuum tubes 220 bolted to the top surface of the electrical body 210, a current transformer 230 bolted to the outer wall of the vacuum tubes 220, three insulators 240 parallel to the vacuum tubes 220 and bolted to the top surface of the electrical body 210, an isolating blade 250 hinged between the current transformers 230 and the insulators 240, and a pull rod 260 snapped onto the bottom surface of the isolating blade 250. The invention is characterized in that a small contact block 270 is welded to the end of the terminal block at the ends of the vacuum tubes 220 and the insulators 240. Grooves are provided on the outer walls of both the upper and lower ends of the contact block 270 to increase the contact area with the conductive wire 142.

[0068] Furthermore, the electrical main body 210 serves as the basic framework of the equipment, integrating and installing all functional modules and providing mechanical support. The vacuum tube 220 has a built-in vacuum interrupter chamber, which can quickly cut off the fault current in a vacuum environment to achieve arc-free interruption. The current transformer 230 mounted on its outer wall can monitor the line current in real time and provide signals for protection control. The insulator 240 is responsible for providing high-voltage insulation and isolation, supporting current-carrying components and ensuring a safe distance relative to ground. The isolating blade 250 forms a visible break through the hinge rotation, realizing the load switching function of physically isolating the power supply during maintenance. The pull rod 260 snapped at its bottom is used to transmit mechanical operating force to drive the isolating blade to open and close.

[0069] This feature, by creating grooves on the outer walls of the upper and lower ends of the junction block 270, allows the wire 142 to better transmit current, thereby improving the reliability of the test data.

[0070] When testing the primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment of the present invention, firstly, a set of withstand voltage testing devices 100 are placed at the front and rear ends of several vacuum circuit breaker devices 200 that need to be tested for withstand voltage. After adjusting the extension height of the telescopic rod 112, it is fixed by external pins.

[0071] Next, push a set of withstand voltage testing devices 100 toward the vacuum circuit breaker 200 to ensure that the power wire 142 in the tightening part 140 and the power receiving block 270 are in the same plane;

[0072] Subsequently, several electric actuators 121 are started synchronously, driving the telescopic frame 122 located in the middle to move upward, so that the racks 124 on both sides mesh with the gears 132, causing them to rotate, and driving the telescopic frames 122 on both sides to move downward.

[0073] At this time, when gear 132 rotates, it drives the spool 133 to rotate synchronously through shaft 131, and the connecting rope 143 is wrapped around its outside, thereby pulling slider 141 to move upward in the through groove 1130 on the plate surface, thereby adjusting the height of the two ends of the wire 142, so that the wire 142 can alternately pass up and down through the contact block 270, and make the wire 142 fully contact the groove on the contact block 270. A multimeter is used to check the continuity of the circuit of the wire 142 to ensure that there is no short circuit or open circuit.

[0074] When the slider 141 moves upward in the through groove 1130 on the plate, it drives the connecting rod 154 to move upward together, allowing the connecting rod 154 to move along the guide groove 1530, thereby driving the moving wire clamp 153 to move towards the fixed wire clamp 151, and thus clamping and fixing the wire 142.

[0075] Next, connect the external wiring 155 to the power frequency withstand voltage tester, set the test voltage according to the rated voltage of the vacuum circuit breaker 200 under test, and increase the voltage to the target value at a rate of ≤1kV / s. During this period, data is collected in real time through the leakage current monitoring module of the tester.

[0076] Afterwards, record and observe data such as whether there are discharge sparks at the contact point between the power line 142 and the grounding block 270, whether the leakage current suddenly increases, and the local heating temperature of the insulating shell. Then, control the electric push rod 121 to reset the device and move it away from both sides of the vacuum circuit breaker 200.

[0077] The foregoing description of specific exemplary embodiments of the invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A primary and secondary integrated pole-mounted vacuum circuit breaker testing device, characterized in that: The device includes a pressure resistance testing device, which includes a placement part, several traction parts disposed on the outer wall of the placement part, several transmission parts disposed inside the placement part, a tightening part disposed on the outer side of the placement part, and a clamping part disposed at the end of the placement part. The traction unit includes three regularly distributed telescopic frames and racks at their ends; the traction unit also includes an electric push rod located under the bottom surface of the middle telescopic frame and a pair of hooks welded to the outer wall of the telescopic frame, with the hooks in the middle facing upwards and the hooks on both sides facing downwards. The transmission unit includes a gear that meshes with a rack and a reel that rotates with it. When the telescopic frame in the middle moves down, the racks at both ends mesh with the gears, driving the gears and the reel to rotate synchronously. The transmission unit also includes a rotating shaft that is engaged between the gear and the reel. The tightening part includes a pair of sliders, a power line connected between the pair of upward sliders, and a connecting rope connected between the sliders and the reel. When the reel rotates, the connecting rope is wrapped around its outside, pulling the sliders upward and adjusting the height of the two ends of the power line. The clamping part includes a fixed clamp, a movable clamp symmetrically arranged on the fixed clamp, and a connecting rod snapped onto the slider. The movable clamp has a guide groove. The clamping part also includes a fixing rod snapped onto the outer wall of the fixed clamp and an external wire snapped onto the top surface of the fixed clamp for connecting to an external power source. The movable clamp is slidably connected to the inside of the fixed clamp and the outside of the fixing rod. The size of the connecting rod is adapted to the guide groove. When the connecting rod moves upward with the slider, it moves along the guide groove, driving the movable clamp to move toward the fixed clamp, thereby clamping the wire.

2. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 1, characterized in that: The placement part includes a base plate, several telescopic rods that are regularly snapped and fixed to the top surface of the base plate, and a placement plate that is snapped to the top of the telescopic rods.

3. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 2, characterized in that: The outer wall of the placement plate has several regularly distributed and continuous plate surface grooves. The placement plate has three regularly distributed limiting sliding grooves between two adjacent plate surface grooves. Sliding rods are engaged between the upper and lower end walls of the plate surface grooves.

4. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 3, characterized in that: The electric actuator is fixedly connected to the outer wall of the placement plate by screws, the telescopic frame is slidably connected to the inside of the limiting slide groove, and the rack is snapped and fixed to the telescopic frame.

5. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 4, characterized in that: The rotating shaft is rotatably connected to the inside of the placement plate.

6. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 5, characterized in that: The slider is slidably connected inside the through groove of the plate and sleeved on the outside of the slide rod. The end of the slider is integrally formed with a terminal. The two ends of the wire are snapped into the inside of the terminal. One end of the connecting rope is attached to the top surface of the slider and the other end is wrapped around the outside of the spool.

7. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 6, characterized in that: The tightening part also includes a spring sleeved on the outside of the slide bar and several guide wheels for guiding the connecting rope. The spring force pushes the slider to move downward, and the guide wheels are engaged and fixed on the outer wall of the placement plate.

8. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 7, characterized in that: The fixing rod is snapped and fixed to the outer wall of the placement plate.

9. The primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to claim 8, characterized in that: The end of the connecting rod is snapped and fixed to the outer wall of the connector.

10. A primary and secondary integrated pole-mounted vacuum circuit breaker, tested using the primary and secondary integrated pole-mounted vacuum circuit breaker testing equipment according to any one of claims 1-9, comprising a vacuum circuit breaker device, the vacuum circuit breaker device comprising an electrical body, three vacuum tubes fixedly connected to the top surface of the electrical body by bolts, a current transformer fixedly connected to the outer wall of the vacuum tubes by bolts, three insulators parallel to the vacuum tubes and fixedly connected to the top surface of the electrical body by bolts, an isolating blade rotatably connected between the current transformers and the insulators by hinges, and a pull rod snapped and fixed to the bottom surface of the isolating blade, characterized in that: A small contact block is welded to the end of the terminal block at both the vacuum tube and the end of the insulator. Grooves are provided on the outer walls of both the upper and lower ends of the contact block to increase the contact area with the conductor wire.

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