Primary and secondary fusion pole-mounted vacuum circuit breaker and detection equipment thereof

Abstract

The invention relates to the technical field of electric appliance detection, in particular to a primary and secondary fusion pole-mounted vacuum circuit breaker and detection equipment thereof. The pressure resistance detection device comprises a placing part, a plurality of traction parts arranged on the outer wall of the placing part, a plurality of transmission parts arranged inside the placing part, a tightening part arranged on the outer side of the placing part and a wire clamping part arranged at the end of the placing part. According to the primary and secondary fusion pole-mounted vacuum circuit breaker and the detection equipment thereof, the sliding block moves upwards to synchronously drive the connecting rod and the connecting rod to move along the guide groove and drive the movable wire clamp to be closed towards the fixed wire clamp, the clamping structure automatically completes reliable clamping and fixing of a power-on wire while the penetrating and winding position is adjusted, and through the combination of the penetrating and winding structure, the working efficiency is greatly improved. According to the whole system, the contact reliability is remarkably improved, the operation steps are simplified, the detection efficiency is improved, and the situation of poor contact or operation errors possibly caused by manual penetrating, winding and clamping is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliance detection, in particular to a primary-secondary fusion column mounted vacuum circuit breaker and detection equipment thereof. Background Art

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

[0003] Patent application number CN202123089073.7 discloses a vacuum circuit breaker withstand voltage test device, which includes a box fixed to a movable base. The inner cavity of the box is divided into a placement cavity at the top, a drawer installation cavity in the middle, and a first installation cavity at the bottom. Second installation cavities are provided on the side walls of both sides of the box. Not only can it be used for withstand voltage testing, but when the withstand voltage monitor body is not in use, it can be hidden in the placement cavity, thereby protecting it and extending its service life.

[0004] However, when the existing equipment is conducting a withstand voltage test on a vacuum circuit breaker, the operator needs to manually thread the test wires one by one into the grooves of the circuit breaker's power connection block. This is not only time-consuming and labor-intensive, but manual threading is prone to wire crossing, missing wires, or misalignment, resulting in uneven pressure on the contact surface and insufficient contact in some grooves, posing a risk of partial discharge. In addition, bolt crimping or manual wire clamps require independent operation, and the clamping force is entirely controlled by the operator's feel. Insufficient clamping force can cause the wires to vibrate and shift during high-voltage testing, increasing contact resistance and even arcing. Moreover, threading and clamping are performed step by step, requiring multiple adjustments and positioning, which prolongs the equipment preparation time.

[0005] In view of this, we propose a primary and secondary fusion column mounted vacuum circuit breaker and its detection equipment. Summary of the Invention

[0006] The purpose of the present invention is to provide a primary-secondary fusion column-mounted vacuum circuit breaker and its detection equipment, which solves the problems raised in the above background technology by driving the rack through an electric push rod to rotate the gear and the wire wheel, tightening the connecting rope and driving the wire clamping part.

[0007] To achieve the above objectives, the present invention provides the following technical solutions: A primary and secondary fusion column mounted vacuum circuit breaker testing device includes a withstand voltage testing device, the withstand voltage testing device including a placement portion, a plurality of traction portions provided on the outer wall of the placement portion, a plurality of transmission portions provided inside the placement portion, a tightening portion provided outside the placement portion, and a wire clamping portion provided at the end of the placement portion; The traction part includes three regularly distributed telescopic frames and racks arranged at their ends; The transmission part includes a gear meshing with the rack and a wire wheel rotating therewith; In this setting, when the telescopic frame in the middle moves downward, the racks at both ends engage with the gears, driving the gears and the wire wheel to rotate synchronously; The tightening part includes a pair of sliders, a conducting wire connected between the pair of pull-up sliders, and a connecting rope connected between the sliders and the wire wheel; In this arrangement, when the wire wheel rotates, the connecting rope is wound around its outside, and the slider is pulled upward to adjust the height of the two ends of the wire. The wire clamping part includes a fixed wire clamp, a movable wire clamp symmetrically arranged on the fixed wire clamp, and a connecting rod clamped on the slider, and a guide groove is opened in the movable wire clamp; With this arrangement, when the connecting rod moves upward with the slider, it moves along the guide groove and drives the movable wire clamp to move toward the fixed wire clamp, thereby clamping the live wire.

[0008] In the technical solution of the present invention, the placement portion includes a bottom plate, a plurality of telescopic rods regularly clamped and fixed on the top surface of the bottom plate, and a placement plate clamped on the top ends of the telescopic rods.

[0009] In the technical solution of the present invention, a number of regularly distributed and front-to-back through-grooves are provided on the outer wall of the placement plate, and three regularly distributed limiting sliding grooves are provided between two adjacent plate surface grooves on the placement plate, and a sliding rod is clamped between the upper and lower groove walls of the plate surface groove.

[0010] The above arrangement adjusts the height of the traction part and the tightening part by adjusting the height of the telescopic rod.

[0011] In the technical solution of the present invention, the traction part also includes an electric push rod arranged under the bottom surface of the middle 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 clamped and fixed to the telescopic frame. The hook opening in the middle faces upward, and the hook openings on both sides face downward.

[0012] In the technical solution of the present invention, the transmission part further includes a rotating shaft clamped between the gear and the wire wheel, and the rotating shaft is rotatably connected to the inside of the placement plate.

[0013] In the technical solution of the present invention, the slider is slidably connected to the inside of the through groove on the plate surface and is sleeved on the outside of the slide rod. The end of the slider is integrally formed with a wiring head. The two ends of the electric wire are clamped inside the wiring head at its end. One end of the connecting rope is adhered to the top surface of the slider and the other end is wrapped around the outside of the reel.

[0014] The above arrangement transmits the power of the electric push rod by arranging transmission parts on both sides of the traction part in the middle, driving the traction parts on both sides to move in opposite directions.

[0015] In the technical solution of the present invention, the tightening part also includes a spring sleeved on the outside of the slide rod and a number of guide wheels for guiding the connecting rope. The elastic force of the spring pushes the slider to move downward, and the guide wheels are clamped and fixed on the outer wall of the placement plate.

[0016] This setting uses the power of the electric push rod, in conjunction with the reel and connecting rope, to allow the live wire to alternately pass up and down through several electric blocks, and then ensure the overall tension of the live wire by moving the slider upward.

[0017] In the technical solution of the present invention, the wire clamping part also includes a fixing rod clamped and fixed on the outer wall of the fixed wire clamp and an external wire clamped on the top surface of the fixed wire clamp and used for an external power supply, and the fixing rod is clamped and fixed on the outer wall of the placement plate.

[0018] In the technical solution of the present invention, the movable wire clamp is slidably connected to the inside of the fixed wire 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 clamped and fixed to the outer wall of the terminal head.

[0019] This arrangement enables the live wire to be alternately passed up and down on the groove of the power connection block, and can also automatically complete the reliable clamping and fixing of the live wire.

[0020] On the other hand, the present invention also provides a primary and secondary fusion column mounted vacuum circuit breaker, which is detected using the above-mentioned primary and secondary fusion column mounted vacuum circuit breaker detection equipment, including a vacuum circuit breaker device, the vacuum circuit breaker device including 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 tube by bolts, three insulators parallel to the vacuum tubes and fixedly connected to the top surface of the electrical body by bolts, an isolating knife connected between the current transformer and the insulator by a hinge, and a pull rod fixed to the bottom surface of the isolating knife, characterized in that: the terminal blocks at the ends of the vacuum tubes and the insulators are welded and fixed with a small power connection block, and grooves are provided on the upper and lower outer walls of the power connection block to increase the contact area with the live wires.

[0021] This setting enables the electric wire to better transmit current and improve the reliability of test data by providing grooves on the outer walls of the upper and lower ends of the power connection block.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. This primary and secondary fusion column-mounted vacuum circuit breaker and its testing equipment use an electric push rod to drive the rack, which rotates the gear and the wire wheel, tightens the connecting rope, and controls the rise and fall of the slider in the plate groove. This realizes the automatic adjustment of the alternating upper and lower winding positions of the live wire in the groove of the power connection block. This ensures full contact between the live wire and the groove of the power connection block, laying the foundation for subsequent reliable electrical connection and voltage resistance testing without relying on manual labor.

[0023] 2. In this integrated primary and secondary column-mounted vacuum circuit breaker and its detection equipment, the upward movement of the slider synchronously drives the connecting rod, which moves along the guide groove, driving the movable wire clamp to close toward the fixed wire clamp. The clamping structure automatically completes the reliable clamping and fixation of the live wire while adjusting the threading and winding position. Combined with the threading and winding structure, the entire system significantly improves contact reliability, simplifies the operation steps, improves detection efficiency, and effectively avoids poor contact or operational errors that may be caused by manual threading and clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the voltage resistance detection device in the present invention; Figure 3 Schematic diagram of the structure of the placement part of the present invention; Figure 4 It is a partial structural schematic diagram of the voltage resistance detection device of the present invention; Figure 5 This is one of the structural diagrams of the traction part in the present invention; Figure 6 This is the second structural diagram of the traction part in the present invention; Figure 7 Schematic diagram of the structure of the transmission part of the present invention; Figure 8 Schematic diagram of the structure of the tightening part of the present invention; Figure 9 Schematic diagram of the structure of the wire clamping part in the present invention; Figure 10 It is a structural schematic diagram of the vacuum circuit breaker device in the present invention; Figure 11 It is a structural schematic diagram of the power connection block in the present invention; Description of reference numerals: 100. Withstand voltage test device; 110. Placement unit; 111. Bottom plate; 112. Telescopic rod; 113. Placement plate; 1130. Plate through slot; 1131. Limiting slide slot; 114. Slide rod; 120. Pulling unit; 121. Electric push rod; 122. Telescopic frame; 123. Hook; 124. Rack; 130. Transmission unit; 131. Rotating shaft; 132. Gear; 133. Wire pulley; 140. Tightening unit; 141. Slider; 1410. Wiring connector; 142. Electric wire; 143. Connecting rope; 144. Spring; 145. Guide wheel; 150. Wire clamping unit; 151. Fixed wire clamp; 152. Fixed rod; 153. Movable wire clamp; 1530. Guide slot; 154. Connecting rod; 155. External wire; 200. Vacuum circuit breaker; 210. Electrical main body; 220. Vacuum tube; 230. Current transformer; 240. Insulator; 250. Isolating knife; 260. Pull rod; 270. Connection block. DETAILED DESCRIPTION

[0025] The following will provide a clear and complete description of the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 3 As shown, this embodiment provides a technical solution: A primary-secondary fusion column mounted vacuum circuit breaker detection device includes a withstand voltage detection device 100, which includes a placement portion 110, a plurality of traction portions 120 arranged on the outer wall of the placement portion 110, a plurality of transmission portions 130 arranged inside the placement portion 110, a tightening portion 140 arranged on the outside of the placement portion 110, and a wire clamping portion 150 arranged at the end position of the placement portion 110.

[0027] Specifically, the placement portion 110 includes a bottom plate 111 , a plurality of telescopic rods 112 regularly clamped and fixed on the top surface of the bottom plate 111 , and a placement plate 113 clamped on the top of the telescopic rods 112 .

[0028] Furthermore, a plurality of regularly distributed and front-to-back through-grooves 1130 are provided on the outer wall of the placement plate 113, and three regularly distributed limiting sliding grooves 1131 are provided between two adjacent plate surface through-grooves 1130 of the placement plate 113, and a sliding rod 114 is clamped between the upper and lower groove walls of the plate surface through-grooves 1130.

[0029] Furthermore, the bottom plate 111 is used to provide a placement platform for the telescopic rod 112, and the telescopic rod 112 can adjust the height of the placement plate 113. The plate surface groove 1130 and the limiting slide groove 1131 respectively provide movement ranges for the internal structures of the tightening part 140 and the traction part 120. This setting adjusts the height of the traction part 120 and the tightening part 140 by adjusting the height of the telescopic rod 112.

[0030] See also Figures 1-6 As shown, in this embodiment, the traction portion 120 includes three regularly distributed telescopic frames 122 and racks 124 provided at the ends thereof.

[0031] Specifically, the traction part 120 also includes an electric push rod 121 arranged under the bottom surface of the middle 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, and the telescopic frame 122 is slidably connected to the inside of the limiting slide groove 1131. The rack 124 is clamped and fixed to the telescopic frame 122. The hook 123 located in the middle opens upward, and the hooks 123 located on both sides open downward.

[0032] Furthermore, after the electric push rod 121 is started, the telescopic frame 122 located in the middle is driven to move upward, and the racks 124 on both sides thereof cooperate with the transmission part 130 to drive the telescopic frames 122 on both sides to move downward.

[0033] See also Figure 4-Figure 7 As shown, in this embodiment, the transmission part 130 includes a gear 132 engaged with the rack 124 and a pulley 133 rotating therewith. When the telescopic frame 122 located in the middle moves downward, the racks 124 at both ends thereof engage with the gear 132, and the driving gear 132 and the pulley 133 rotate synchronously.

[0034] Specifically, the transmission part 130 further includes a rotating shaft 131 clamped between the gear 132 and the wire wheel 133 , and the rotating shaft 131 is rotatably connected to the inside of the placement plate 113 .

[0035] Furthermore, after the telescopic frame 122 in the middle moves upward, the racks 124 on both sides thereof engage the gears 132, driving them to rotate, and then the gears 132 engage the racks 124 on the other side thereof, thereby driving the telescopic frames 122 on both sides to move downward, and when the gears 132 rotate, the wire pulleys 133 are driven to rotate synchronously through the rotating shaft 131. This setting transmits the power of the electric push rod 121 by arranging 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.

[0036] See also Figure 4-Figure 8As shown, in this embodiment, the tightening part 140 includes a pair of sliders 141, an electric wire 142 connected between a pair of pull-up sliders, and a connecting rope 143 connected between the sliders 141 and the pulley 133. When the pulley 133 rotates, the connecting rope 143 is wrapped around its outside, pulling the slider 141 upward to adjust the height of the two ends of the electric wire 142.

[0037] Specifically, the slider 141 is slidably connected to the inside of the plate groove 1130 and is sleeved on the outside of the slide rod 114. The end of the slider 141 is integrally formed with a terminal head 1410. The two ends of the power line 142 are clamped inside the terminal head 1410 at its end. One end of the connecting rope 143 is adhered to the top surface of the slider 141 and the other end is wrapped around the outside of the reel 133.

[0038] Furthermore, the tightening part 140 also includes a spring 144 sleeved on the outside of the slide rod 114 and a plurality of 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 clamped and fixed on the outer wall of the placement plate 113.

[0039] Furthermore, after the reel 133 rotates, the connecting rope 143 is wrapped around its outside, and then the slider 141 is pulled upward in the plate groove 1130, thereby adjusting the height of the two ends of the live wire 142, so that the live wire 142 can alternately pass through and wrap around the power block 270, and make the live wire 142 fully contact with the groove on the power block 270, and use a multimeter to detect the continuity of the loop of the live wire 142 to ensure that there is no short circuit or open circuit. This setting uses the power of the electric push rod 121, combined with the reel 133 and the connecting rope 143, to allow the live wire 142 to alternately pass through and wrap around several power blocks 270, and then ensure that the live wire 142 is in an overall taut state through the upward movement of the slider 141.

[0040] See also Figure 8-Figure 9 As shown, in this embodiment, the wire clamping portion 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. A guide groove 1530 is provided in the movable wire clamp 153. 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 toward the fixed wire clamp 151, thereby clamping the live wire 142.

[0041] Specifically, the wire clamping portion 150 also includes a fixing rod 152 that is clamped and fixed to the outer wall of the fixing wire clamp 151 and an external wire 155 that is clamped and fixed to the top surface of the fixing wire clamp 151 and is used for an external power supply. The fixing rod 152 is clamped and fixed to the outer wall of the placement plate 113.

[0042] Furthermore, the movable wire clamp 153 is slidably connected to the inside of the fixed wire clamp 151 and the outside of the fixed rod 152. The size of the connecting rod 154 is adapted to the guide groove 1530. The end of the connecting rod 154 is clamped and fixed to the outer wall of the terminal head 1410.

[0043] Furthermore, when the slider 141 moves upward in the plate groove 1130, it drives the connecting rod 154 to move upward together, allowing the connecting rod 154 to move along the guide groove 1530, and driving the movable wire clamp 153 to move toward the fixed wire clamp 151, thereby clamping and fixing the live wire 142. This setting realizes that after the live wire 142 is alternately passed up and down on the groove of the power connection block 270, it can also automatically complete the reliable clamping and fixation of the live wire.

[0044] See also Figure 10-11 As shown, a primary and secondary fusion column-mounted vacuum circuit breaker of the present invention is detected using the above-mentioned primary and secondary fusion column-mounted vacuum circuit breaker detection equipment, including a vacuum circuit breaker device 200, the vacuum circuit breaker device 200 includes an electrical body 210, three vacuum tubes 220 fixedly connected to the top surface of the electrical body 210 by bolts, a current transformer 230 fixedly connected to the outer wall of the vacuum tube 220 by bolts, three insulators 240 parallel to the vacuum tube 220 and fixedly connected to the top surface of the electrical body 210 by bolts, an isolating knife 250 connected between the current transformer 230 and the insulator 240 by a hinge, and a pull rod 260 fixed to the bottom surface of the isolating knife 250, characterized in that: a small power connection block 270 is welded and fixed to the end of the terminal block at the end of the vacuum tube 220 and the insulator 240, and grooves are provided on the upper and lower outer walls of the power connection block 270 to increase the contact area with the live wire 142.

[0045] Furthermore, the electrical 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 arc extinguishing chamber, which can quickly cut off the fault current in a vacuum environment to achieve arc-free disconnection. 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 isolation, supporting current-carrying components and ensuring a relatively safe distance. The isolating knife 250 rotates through a hinge to form a visible fracture, realizing the load switch function of physically isolating the power supply during maintenance. The pull rod 260 clamped at the bottom is used to transmit mechanical operating force to drive the isolating knife to open and close.

[0046] This configuration enables the conducting wire 142 to better transmit current and improve the reliability of the test data by providing grooves on the outer walls of the upper and lower ends of the power connection block 270.

[0047] When testing the primary and secondary fusion column mounted vacuum circuit breaker testing equipment of the present invention, first, a set of withstand voltage testing devices 100 is placed at the front and rear ends of a number of vacuum circuit breaker devices 200 that need to undergo withstand voltage testing, and after adjusting the telescopic height of the telescopic rod 112, it is fixed with an external latch; Next, push a set of withstand voltage testing devices 100 toward the vacuum circuit breaker 200, ensuring that the live wires 142 in the tightening portion 140 and the power connection block 270 are in the same plane; Subsequently, the plurality of electric push rods 121 are controlled to start synchronously, driving the telescopic frame 122 in the middle to move upward, and the racks 124 on both sides thereof engage the gears 132, driving them to rotate, thereby driving the telescopic frames 122 on both sides to move downward; At this time, when the gear 132 rotates, the reel 133 is driven to rotate synchronously through the rotating shaft 131, and the connecting rope 143 is wound around its outer side, thereby pulling the slider 141 upward in the plate groove 1130, thereby adjusting the height of the two ends of the power line 142, so that the power line 142 can alternately pass through the connection block 270 up and down, and ensure that the power line 142 fully contacts the groove on the connection block 270. Use a multimeter to check the continuity of the circuit of the power line 142 to ensure that there is no short circuit or open circuit. When the slider 141 moves upward in the plate slot 1130 , it drives the connecting rod 154 upward together, allowing the connecting rod 154 to move along the guide slot 1530 , thereby driving the movable wire clamp 153 to move toward the fixed wire clamp 151 , thereby clamping and fixing the live wire 142 ; Next, connect the external cable 155 to the power frequency withstand voltage tester, set the test voltage according to the rated voltage of the vacuum circuit breaker device 200 under test, and increase the voltage uniformly to the target value at a rate of ≤1kV / s. During this period, the leakage current monitoring module of the tester collects data in real time. Afterwards, record and observe data such as whether there is discharge spark at the contact point between the power line 142 and the power connection block 270, whether the leakage current suddenly increases, and the local heating temperature of the insulating shell. After controlling the electric push rod 121 to reset the device, it can be moved away from both sides of the vacuum circuit breaker equipment 200.

[0048] The foregoing descriptions of specific exemplary embodiments of the present invention are for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that many variations and modifications are possible in light of the foregoing teachings. The exemplary embodiments have been selected and described for the purpose of explaining the specific principles of the invention and their practical application, thereby enabling those skilled in the art to make and utilize a variety of exemplary embodiments of the invention and various options and modifications. The scope of the invention is intended to be defined by the description and its equivalents.

Claims

1. A primary and secondary fusion column mounted vacuum circuit breaker detection device, characterized by: The pressure-resistant testing device includes a placing portion, a plurality of traction portions arranged on the outer wall of the placing portion, a plurality of transmission portions arranged inside the placing portion, a tightening portion arranged outside the placing portion, and a wire clamping portion arranged at the end of the placing portion; The traction part includes three regularly distributed telescopic frames and racks arranged at their ends; The transmission part includes a gear meshing with the rack and a wire wheel rotating with the rack. When the telescopic frame located in the middle moves downward, the racks at both ends mesh with the gears, driving the gear and the wire wheel to rotate synchronously. The tightening part includes a pair of sliders, a conducting wire connected between the pair of pull-up sliders, and a connecting rope connected between the sliders and the wire wheel. When the wire wheel rotates, the connecting rope is wound around the outside of the wire wheel, pulling the sliders upward to adjust the height of the two ends of the conducting wire. The wire clamping part includes a fixed wire clamp, a movable wire clamp symmetrically arranged on the fixed wire clamp, and a connecting rod clamped on the slider. A guide groove is provided in the movable wire clamp. When the connecting rod moves upward with the slider, it moves along the guide groove to drive the movable wire clamp to move toward the fixed wire clamp, thereby clamping the live wire.

2. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 1, characterized in that: The placement portion comprises a bottom plate, a plurality of telescopic rods regularly clamped and fixed on the top surface of the bottom plate, and a placement plate clamped on the top ends of the telescopic rods.

3. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 2, characterized in that: The outer wall of the placement plate is provided with a plurality of regularly distributed and front-to-back through-plate grooves, and the placement plate is provided with three regularly distributed limiting sliding grooves between two adjacent plate surface grooves, and a sliding rod is clamped between the upper and lower end groove walls of the plate surface groove.

4. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 3, characterized in that: The traction part also includes an electric push rod arranged under the bottom surface of the middle 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 clamped and fixed to the telescopic frame. The hook opening in the middle faces upward, and the hook openings on both sides face downward.

5. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 4, characterized in that: The transmission part also includes a rotating shaft clamped between the gear and the wire wheel, and the rotating shaft is rotatably connected to the inside of the placement plate.

6. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 5, characterized in that: The slider is slidably connected to the inside of the through groove on the plate surface and is sleeved on the outside of the slide rod. A wiring head is integrally formed at the end of the slider. The two ends of the live wire are clamped inside the wiring head at its end. One end of the connecting rope is adhered to the top surface of the slider and the other end is wrapped around the outside of the reel.

7. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 6, characterized in that: The tightening part also includes a spring sleeved on the outside of the slide rod and a plurality of guide wheels for guiding the connecting rope. The elastic force of the spring pushes the slide block to move downward, and the guide wheels are clamped and fixed on the outer wall of the placement plate.

8. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 7, characterized in that: The wire clamping portion further comprises a fixing rod clamped and fixed on the outer wall of the fixing wire clamp and an external wire clamped on the top surface of the fixing wire clamp and used for connecting to an external power supply. The fixing rod is clamped and fixed on the outer wall of the placement plate.

9. The primary and secondary fusion column mounted vacuum circuit breaker detection equipment according to claim 8, characterized in that: The movable wire clamp is slidably connected to the inside of the fixed wire 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 clamped and fixed on the outer wall of the wiring head.

10. A primary-secondary fusion column mounted vacuum circuit breaker, detected using the primary-secondary fusion column mounted vacuum circuit breaker detection device according to any one of claims 1 to 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 tube by bolts, three insulators parallel to the vacuum tubes and fixedly connected to the top surface of the electrical body by bolts, an isolating knife rotatably connected between the current transformer and the insulator by a hinge, and a pull rod fixedly fixed to the bottom surface of the isolating knife, characterized in that: A small power connection block is welded and fixed to the terminal block ends of the vacuum tube and the insulator, and grooves are provided on the outer walls of the upper and lower ends of the power connection block to increase the contact area with the live wire.

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