A mobile high-voltage switchgear with electric trolley control function

Abstract

The present application relates to the technical field of high-voltage switchgear. A mobile high-voltage switchgear with an electric trolley control function includes a cabinet body and a cabinet door. The cabinet body is provided with a circuit breaker chamber. The cabinet door is connected to the cabinet body and covers the circuit breaker chamber. A chassis car is embedded in the circuit breaker chamber. The circuit breaker body is slidably connected to the chassis car. The screw rod is rotatably connected to the chassis car. The screw rod is threadedly connected to the circuit breaker body. The drive motor is slidably connected to the chassis car. The drive motor is used to drive the screw rod to rotate. The drive cylinder is used to drive the drive motor to slide. The controller is connected to the cabinet body. The controller is used to control the drive cylinder to work. The controller is used to control the drive motor to work. The controller controls the drive cylinder to work, drives the drive motor to connect or disconnect with the screw rod. When the drive motor is connected with the screw rod, the controller controls the drive motor to rotate, drives the screw rod to rotate, drives the circuit breaker body and the static contact to close or open, improves the automation efficiency of the switch cabinet, and reduces the work intensity of the operator.

Description

Technical Field

[0001] The present application relates to the technical field of high-voltage switchgear, and in particular to a mobile high-voltage switch cabinet with an electric trolley control function. Background Art

[0002] High-voltage switchgear refers to electrical products with voltage levels ranging from 3.6kV to 550kV, which are used for switching, control or protection in power generation, transmission, distribution, power conversion and consumption in power systems. They mainly include high-voltage disconnectors and earthing switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switchgear.

[0003] 10kV removable high-voltage switchgear is the most widely used switchgear in China. The switchgear consists of a fixed cabinet and a removable vacuum circuit breaker trolley. The interior of the cabinet is divided into a circuit breaker room, a busbar room, a cable room and a relay instrument room by a grounded metal plate.

[0004] The vacuum circuit breaker trolley is embedded in the circuit breaker room. During power outage maintenance, the operator needs to manually separate the circuit breaker and the static contact through the handle, which is labor-intensive. Summary of the invention

[0005] In order to reduce the workload of operators and automatically separate the circuit breaker from the static contact, the present application provides a mobile high-voltage switch cabinet with an electric trolley control function.

[0006] The mobile high-voltage switchgear with electric trolley control function provided in this application adopts the following technical solution:

[0007] A mobile high-voltage switch cabinet with an electric trolley control function comprises a cabinet body, a cabinet door, a circuit breaker body, a chassis, a screw rod, a drive cylinder, a drive motor and a controller. A circuit breaker chamber is provided on one side of the cabinet body. The cabinet door is connected to the cabinet body and covers the circuit breaker chamber. The chassis is embedded in the circuit breaker chamber. The circuit breaker body is slidably connected to the chassis. The sliding direction of the circuit breaker body is parallel to the depth direction of the circuit breaker chamber. The screw rod is rotatably connected to the chassis. The rotation axis of the screw rod is parallel to the sliding direction of the circuit breaker body. The screw rod is threadedly connected to the circuit breaker body. The drive motor is slidably connected to the chassis. The drive motor is used to drive the screw rod to rotate. The drive cylinder is connected to the chassis. The drive cylinder is used to drive the drive motor to slide. The controller is connected to the cabinet body. The controller is used to control the drive cylinder to work so as to connect or separate the drive motor from the screw rod. The controller is used to control the drive motor to work so as to rotate the screw rod.

[0008] By adopting the above technical solution, the controller controls the operation of the drive cylinder to drive the drive motor to connect or separate with the lead screw. When the drive motor is connected with the lead screw, the controller controls the drive motor to rotate, drives the lead screw to rotate, drives the circuit breaker body and the static contact to close or open, thereby improving the automation efficiency of the switch cabinet and reducing the workload of the operator.

[0009] Preferably, it also includes a power supply and a first contact switch, the power supply is connected to the chassis vehicle, the first contact switch is connected to the chassis vehicle, the first contact switch is electrically connected to the power supply and the drive motor, the first contact switch is used for abutment of the drive motor, and when the drive motor is connected to the screw rod, the first contact switch is closed.

[0010] By adopting the above technical solution, when the drive motor is connected to the lead screw, the first contact switch is closed, and the power supply provides power to the drive motor, so that the drive motor is in a standby state, which is convenient for the controller to control the operation of the drive motor and realize the closing or opening of the circuit breaker body and the static contact; when the drive motor is separated from the lead screw, the first contact switch is in a disconnected state, and the drive motor is in a power-off state, which reduces the possibility of the drive motor working in a no-load state and causing damage to the components in the circuit breaker room, thereby improving the safety and reliability of the switch cabinet.

[0011] Preferably, it also includes a transmission assembly and a connecting shaft, wherein the connecting shaft is coaxially connected to the output shaft of the drive motor, the sliding direction of the drive motor is parallel to the axial direction of the screw rod, and the transmission assembly is connected between the connecting shaft and the screw rod.

[0012] By adopting the above technical solution, the drive motor drives the lead screw to rotate through the connecting shaft and the transmission assembly, reducing the possibility of unstable connection when the drive motor is directly connected to the lead screw, improving the accuracy of the transmission, reducing the wear on the output shaft of the drive motor when the drive motor is connected or separated from the lead screw, and increasing the service life of the drive motor and the lead screw.

[0013] Preferably, the transmission assembly includes a driving pulley, a driven pulley and a belt body, the driving pulley is coaxially connected to the outer periphery of the connecting shaft, the driven pulley is coaxially connected to the outer periphery of the screw rod, the belt body is sleeved on the outer peripheries of the driving pulley and the driven pulley, the outer periphery of the connecting shaft is coaxially connected with a transmission section and a support section, one end of the transmission section is connected to one end of the support section, the driving pulley is coaxially provided with a limiting hole, the transmission section and the support section are both coaxially slidably embedded in the limiting hole, the transmission section is circumferentially fixed to the limiting hole, and the support section is coaxially rotatably embedded in the limiting hole.

[0014] By adopting the above technical scheme, the driving motor slides and drives the connecting shaft to slide. When the supporting section is embedded in the limiting hole, the active pulley and the connecting shaft are rotatably connected, and the staff can manually drive the lead screw to rotate. When the transmission section is embedded in the limiting hole, the connecting shaft and the active pulley are circumferentially fixed, and the driving motor works to drive the connecting shaft to rotate, drive the active pulley to rotate, drive the driven pulley to rotate through the belt body, and drive the lead screw to rotate, automatically realize the closing or opening of the circuit breaker body and the static contact, improve the stability of the lead screw driven by the driving motor, facilitate the maintenance or replacement of the connecting shaft and the transmission assembly, and reduce the production cost.

[0015] Preferably, when the support section is embedded in the limiting hole, a first chamfer is provided at one end of the limiting hole wall close to the transmission section, and the first chamfer is used for abutment of one end of the transmission section close to the support section.

[0016] By adopting the above technical solution, the first chamfer guides the transmission section, making it easier for the transmission section to be embedded in the limiting hole, so that the transmission section and the limiting hole are circumferentially fixed, and the motor drives the screw rod to rotate, making it easier to connect the connecting shaft to the driving pulley.

[0017] Preferably, it also includes a baffle, the cabinet door is provided with an operating port, the baffle is connected to the cabinet door and covers the operating port, the end of the screw rod close to the cabinet door is connected to a card block, the card block is used to connect with the crank, and the card block is embedded in the groove of the manual crank.

[0018] By adopting the above technical solution, a block is coaxially connected to one end of the screw rod close to the cabinet door, and the block is used to connect with the crank, so that when a power failure occurs, the staff can rotate the baffle to open the operating port, and manually rotate the crank to achieve the disconnection of the circuit breaker body and the static contact, which is convenient for subsequent maintenance of the switch cabinet and improves the reliability of the switch cabinet. The baffle is set to cover the operating port to prevent external impurities from entering the circuit breaker room, reduce the possibility of damage to equipment in the circuit breaker room, and increase the service life of the switch cabinet.

[0019] Preferably, it also includes a push rod and a ring, the support section is located on the side of the transmission section close to the cabinet door, one end of the push rod is connected to the drive motor, and the ring is connected to the other end of the push rod, and the ring is coaxially sleeved on the outer periphery of the block, and when the transmission section is located in the limiting hole, the end of the ring away from the drive motor is flush with the end of the block away from the drive motor.

[0020] By adopting the above technical solution, when the transmission section is embedded in the limiting hole, the lead screw is in an electric state, and the push rod pushes the ring to surround the outer periphery of the block, thereby preventing the crank handle from being connected to the block, thereby reducing the possibility that the drive motor's electric lead screw rotates, driving the crank handle connected to the block to rotate, and endangering the life and health of the staff, thereby improving the safety of the switch cabinet.

[0021] Preferably, it also includes a protective cover and a locking structure, wherein the protective cover is rotatably connected to the cabinet, the protective cover is provided with a receiving cavity, the receiving cavity is used for embedding the controller, and the locking structure is connected between the protective cover and the cabinet to achieve relative fixation of the protective cover and the cabinet.

[0022] By adopting the above technical solution and setting a locking structure, the protective cover and the cabinet body are relatively fixed, which reduces the possibility of equipment damage or safety accidents caused by misoperation by outsiders during the operation of the switch cabinet, and improves the reliability of the switch cabinet.

[0023] Preferably, it also includes a magnetic block and an electromagnet, wherein the magnetic block is connected to the protective cover, and the electromagnet is connected to the cabinet, and the electromagnet and the magnetic block attract each other.

[0024] By adopting the above technical solution, when the switch cabinet is working, the electromagnet is in a powered state, the electromagnet generates magnetic force, the electromagnet and the magnetic block attract each other, so that the protective cover is pressed against the outer wall of the cabinet body, thereby achieving relative fixation of the protective cover and the cabinet body, reducing the possibility of outsiders operating the controller without disconnecting the power supply of the switch cabinet, reducing the possibility of damage to the switch cabinet, and improving the safety of the switch cabinet.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The controller controls the drive cylinder to work, driving the drive motor to connect or separate with the lead screw. When the drive motor is connected with the lead screw, the controller controls the drive motor to rotate, driving the lead screw to rotate, driving the circuit breaker body and the static contact to close or open, improving the automation efficiency of the switch cabinet and reducing the workload of operators;

[0027] 2. When the drive motor is connected to the lead screw, the first contact switch is closed, and the power supply provides power to the drive motor, so that the drive motor is in a standby state, which is convenient for the controller to control the drive motor to work and realize the closing or opening of the circuit breaker body and the static contact; when the drive motor is separated from the lead screw, the first contact switch is in a disconnected state, and the drive motor is in a power-off state, which reduces the possibility of the drive motor working in a no-load state and causing damage to the components in the circuit breaker room, thereby improving the safety and reliability of the switch cabinet;

[0028] 3. The driving motor slides, driving the connecting shaft to slide. When the supporting section is embedded in the limiting hole, the active pulley and the connecting shaft are connected in rotation. The staff can manually drive the screw to rotate. When the transmission section is embedded in the limiting hole, the connecting shaft and the active pulley are circumferentially fixed. The driving motor works, driving the connecting shaft to rotate, driving the active pulley to rotate, and driving the driven pulley to rotate through the belt body, driving the screw to rotate, automatically realizing the closing or opening of the circuit breaker body and the static contact, improving the stability of the screw rod driven by the driving motor, facilitating the maintenance or replacement of the connecting shaft and the transmission components, and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of a mobile high-voltage switchgear with electric trolley control function.

[0030] Figure 2 It is a structural diagram of a handcart.

[0031] Figure 3 It is a cross-sectional view of a mobile high-voltage switchgear with electric trolley control function.

[0032] Figure 4 It is a partial cross-sectional view of a mobile high-voltage switchgear with electric trolley control function.

[0033] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0034] Figure 6 yes Figure 2 Enlarged view of point B in the middle.

[0035] Figure 7 It is a partial cross-sectional view of the switch cabinet body and the trolley.

[0036] Figure 8 yes Figure 7 Enlarged view of point C in the middle.

[0037] Fig. 9 It is a partial cross-sectional view of the switch cabinet body and controller.

[0038] Fig.10 yes Fig. 9 Enlarged view of point D in the middle.

[0039] Description of reference numerals:

[0040] 1. Switch cabinet body; 11. Cabinet body; 111. Circuit breaker chamber; 112. Limit block; 113. Fixing slot; 114. Positioning block; 12. Cabinet door; 121. Operation port; 122. Rotation slot; 13. Baffle; 14. Protective cover; 141. Accommodating chamber; 15. Locking structure; 151. Buckle; 1511. Second chamfer; 152. Snap ring; 16. Magnetic block; 17. Electromagnet; 18. Knob;

[0041] 2. Handcart; 21. Circuit breaker body; 22. Chassis; 221. Seat; 2211. Accommodating groove; 2212. Slide groove; 2213. Connecting groove; 2214. Guide groove; 2215. Abutment block; 22151. Ring groove; 2216. Support seat; 2217. Limiting plate; 2218. Connecting groove; 2219. Mounting groove; 222. Roller; 223. Fixing assembly; 2231. Handle; 2232. Fixing block; 224. Mounting seat; 2 241, connecting block; 225, sliding seat; 23, screw rod; 231, clamping block; 24, driving cylinder; 25, driving motor; 26, power supply; 27, first contact switch; 28, transmission assembly; 281, driving pulley; 2811, limiting hole; 2812, first chamfer; 282, driven pulley; 283, belt body; 29, connecting shaft; 291, transmission section; 292, supporting section; 210, ejector rod; 211, sleeve ring; 212, second contact switch;

[0042] 3. Controller. DETAILED DESCRIPTION

[0043] The present application is further described in detail below in conjunction with the accompanying drawings.

[0044] Reference Figure 1 The embodiment of the present application discloses a mobile high-voltage switchgear with an electric trolley control function, including a switchgear body 1. The switchgear body 1 includes a cabinet 11 and a cabinet door 12. A circuit breaker chamber 111 is provided on one side of the cabinet 11 along the length direction of the cabinet 11, and the cabinet door 12 is rotatably connected to the cabinet 11 and covers the circuit breaker chamber 111, and the rotation axis of the cabinet door 12 is vertical.

[0045] Reference Figure 1 and Figure 2 A mobile high-voltage switch cabinet with an electric trolley control function also includes a trolley 2. The trolley 2 includes a chassis trolley 22. The chassis trolley 22 includes a seat 221 and rollers 222. The seat 221 is slidably embedded in the circuit breaker chamber 111, and the sliding direction of the seat 221 is parallel to the length direction of the cabinet 11. The surfaces of the seat 221 on both sides of the length direction of the seat 221 fit the inner wall of the circuit breaker chamber 111. A receiving groove 2211 is provided at the lower end of the seat 221, and the roller 222 is rotatably embedded in the receiving groove 2211, and the rotation axis of the roller 222 is parallel to the length direction of the seat 221. There are a plurality of rollers 222, and the plurality of rollers 222 are divided into two groups. The two groups of rollers 222 are symmetrically distributed along the length direction of the seat 221, and the rollers 222 of the same group are spaced apart along the width direction of the seat 221. In this embodiment, there are four rollers 222.

[0046] Reference Figure 2 and Figure 3The chassis 22 also includes a fixing assembly 223. A limit block 112 is fixedly connected to the inner wall of the circuit breaker chamber 111, and the limit block 112 is used for abutting against one end of the seat body 221 away from the cabinet door 12. The fixing assembly 223 includes a handle 2231 and a fixing block 2232. A slide groove 2212 is provided on the side of the seat body 221 close to the cabinet door 12. There are two slide grooves 2212, and the two slide grooves 2212 are symmetrically distributed along the length direction of the seat body 221. The number of the fixing blocks 2232 and the handles 2231 is the same as the number of the slide grooves 2212 and corresponds one to one. The fixing blocks 2232 are slidably embedded in the slide grooves 2212, and the sliding direction of the fixing blocks 2232 is parallel to the length direction of the seat body 221. A connecting groove 2213 is provided at the groove wall of the fixing groove 113 near the cabinet door 12, and the handle 2231 is arc-shaped. Both ends of the handle 2231 are respectively fixedly connected to the fixing block 2232. The handle 2231 is slidably embedded in the connecting groove 2213, and the sliding direction of the handle 2231 is parallel to the sliding direction of the fixing block 2232. The fixing grooves 113 are provided at the inner wall of the circuit breaker chamber 111 along the length direction of the base. The number of the fixing grooves 113 is the same as the number of the fixing blocks 2232 and corresponds one to one. The fixing grooves 113 are used for the fixing blocks 2232 to be embedded.

[0047] Reference Figure 3 and Figure 4 The chassis 22 also includes a mounting seat 224, which is slidably connected to the upper end of the seat body 221, and the sliding direction of the mounting seat 224 is parallel to the length direction of the cabinet 11. The trolley 2 also includes a circuit breaker body 21 and a screw rod 23, and the circuit breaker body 21 is fixedly connected to the upper end of the mounting seat 224. A guide groove 2214 is provided at the upper end of the seat body 221, and the guide groove 2214 is connected to the receiving groove 2211. A connecting block 2241 is fixedly connected to the lower end of the mounting seat 224, and the connecting block 2241 passes through the guide groove 2214 and then extends into the receiving groove 2211. The screw rod 23 is rotatably embedded in the receiving groove 2211, and the rotation axis of the screw rod 23 is parallel to the sliding direction of the mounting seat 224, and the screw rod 23 is threadedly connected to the connecting block 2241. The side of the seat 221 close to the cabinet door 12 is fixedly connected with an abutment block 2215, and the end of the abutment block 2215 away from the seat 221 abuts against the side surface of the cabinet door 12 close to the circuit breaker chamber 111. The end of the screw rod 23 close to the cabinet door 12 along the axis direction of the screw rod 23 passes through the groove wall of the accommodating groove 2211 and the abutment block 2215 in sequence.

[0048] Reference Figure 5The cabinet door 12 is provided with an operating port 121, and the operating port 121 penetrates the cabinet door 12 along the thickness direction of the cabinet door 12. The end of the screw rod 23 close to the cabinet door 12 is coaxially fixedly connected with a block 231, and the end of the block 231 away from the screw rod 23 is embedded in the operating port 121, and the block 231 is used to connect with the crank. In this embodiment, the axial cross-section of the block 231 is square. A rotation groove 122 is provided on the inner wall of the operating port 121. The switch cabinet body 1 also includes a knob 18 and a baffle 13, the baffle 13 is connected to the cabinet door 12 and covers the operating port 121, the baffle 13 is rotatably embedded in the rotation groove 122, and the rotation axis of the baffle 13 is parallel to the thickness direction of the cabinet door 12. The knob 18 is rotatably connected to the cabinet door 12 , the rotation axis of the knob 18 is parallel to the rotation axis of the baffle 13 , one end of the knob 18 close to the circuit breaker chamber 111 extends into the rotation slot 122 , and the knob 18 is fixedly connected to the baffle 13 .

[0049] Reference Figure 6 and Figure 7 The chassis 22 also includes a sliding seat 225. The sliding seat 225 is slidably embedded in the receiving groove 2211, and the sliding direction of the sliding seat 225 is parallel to the axial direction of the screw rod 23. The trolley 2 also includes a driving motor 25 and a connecting shaft 29. The driving motor 25 is connected to the sliding seat 225, and the driving motor 25 is used to drive the screw rod 23 to rotate. The housing of the driving motor 25 is fixedly connected to the sliding seat 225, and the end of the connecting shaft 29 close to the cabinet door 12 is coaxially fixedly connected to the output shaft of the driving motor 25. The bottom of the receiving groove 2211 is fixedly connected to a support seat 2216, and the other end of the connecting shaft 29 is coaxially rotatably connected to the support seat 2216. The outer periphery of the connecting shaft 29 is coaxially fixedly connected with a support section 292 and a transmission section 291, and the end of the transmission section 291 close to the cabinet door 12 is fixedly connected to the end of the support section 292 away from the cabinet door 12.

[0050] Reference Figure 6 and Figure 8The trolley 2 also includes a transmission assembly 28, which is connected between the connecting shaft 29 and the screw rod 23. The transmission assembly 28 includes a driving pulley 281, a driven pulley 282 and a belt body 283. The driving pulley 281 is coaxially connected to the outer periphery of the connecting shaft 29. The bottom of the accommodating groove 2211 is fixedly connected to a limiting plate 2217. Two limiting plates 2217 are provided. The two limiting plates 2217 are spaced apart along the rotation axis of the driving pulley 281. The two limiting plates 2217 respectively abut against the two ends of the driving pulley 281 along the rotation axis of the driving pulley 281. The driven pulley 282 is coaxially fixedly connected to the outer periphery of the screw rod 23. The driven pulley 282 is located on the side of the screw rod 23 away from the cabinet door 12. The belt body 283 is sleeved on the outer periphery of the driving pulley 281 and the driven pulley 282. The driving pulley 281 is coaxially provided with a limiting hole 2811, the support section 292 and the transmission section 291 are coaxially slidably embedded in the limiting hole 2811, the support section 292 is coaxially rotatably embedded in the limiting hole 2811, and the transmission section 291 is circumferentially fixed to the limiting hole 2811. In this embodiment, the axial cross-section of the limiting hole 2811 is square, the axial cross-section of the support section 292 is circular, the outer wall of the support section 292 is tangent to the hole wall of the limiting hole 2811, and the outer wall of the transmission section 291 is in contact with the hole wall of the limiting hole 2811. A first chamfer 2812 is provided at the hole wall of the limiting hole 2811 away from the cabinet door 12, and the first chamfer 2812 is used for the transmission section 291 to abut.

[0051] The trolley 2 further includes a driving cylinder 24. The driving cylinder 24 is embedded in the receiving groove 2211, and is used to drive the sliding seat 225 to slide. In this embodiment, the driving cylinder 24 is a pneumatic cylinder, and the cylinder body of the driving cylinder 24 is fixedly connected to the bottom of the receiving groove 2211, and the cylinder body of the driving cylinder 24 is located on a side of the sliding seat 225 close to the cabinet door 12, and the piston rod of the driving cylinder 24 is fixedly connected to a side surface of the sliding seat 225 close to the cabinet door 12.

[0052] Reference Figure 4 and Figure 5 The trolley 2 also includes a push rod 210 and a collar 211. A ring groove 22151 is provided on the side of the abutment block 2215 close to the cabinet door 12, the axis of the ring groove 22151 coincides with the axis of the screw rod 23, and the collar 211 is coaxially embedded in the ring groove 22151. A connecting groove 2218 is provided at the bottom of the ring groove 22151, and the connecting groove 2218 is connected to the accommodating groove 2211. One end of the push rod 210 is fixedly connected to the end of the sliding seat 225 close to the cabinet door 12, and the other end of the push rod 210 passes through the connecting groove 2218 and is fixedly connected to the end of the collar 211 away from the cabinet door 12. When the transmission section 291 is embedded in the limiting hole 2811, the end of the collar 211 away from the push rod 210 is flush with the end of the block 231 away from the screw rod 23.

[0053] Reference Figure 6 and Figure 7The trolley 2 further includes a power supply 26 and a second contact switch 212. The power supply 26 is embedded in the receiving groove 2211, and the second contact switch 212 is fixedly connected to the end of the seat body 221 away from the cabinet door 12. The second contact switch 212 is electrically connected to the power supply 26 and the driving cylinder 24. A positioning block 114 is fixedly connected to the lower wall of the circuit breaker chamber 111, and the second contact switch 212 is used to abut against the positioning block 114. When the seat body 221 abuts against the limit block 112, the second contact switch 212 is in a closed state, and the power supply 26 provides power for the driving source.

[0054] Reference Figure 6 The trolley 2 further includes a first contact switch 27. A mounting groove 2219 is provided at the bottom of the receiving groove 2211. The first contact switch 27 is embedded in the mounting groove 2219. The first contact switch 27 is electrically connected to the power supply 26 and the drive motor 25. The first contact switch 27 is used to abut against the sliding seat 225. When the transmission section 291 is located in the limiting hole 2811, the first contact switch 27 is in a closed state, and the power supply 26 provides power to the drive motor 25.

[0055] A mobile high-voltage switch cabinet with an electric trolley control function also includes a controller 3. The controller 3 is fixedly connected to a side surface of the cabinet body 11 close to the cabinet door 12, and the controller 3 is used to control the drive cylinder 24 to work so that the transmission section 291 is embedded in the limit hole 2811, and the controller 3 is used to control the drive motor 25 to work so that the screw rod 23 rotates.

[0056] Reference Fig. 9 and Fig.10 The switch cabinet body 1 further includes a protective cover 14 and a locking structure 15. The protective cover 14 is rotatably connected to the cabinet body 11, and the rotation axis of the protective cover 14 is vertical. A receiving cavity 141 is provided on the side of the protective cover 14 close to the cabinet body 11, and the receiving cavity 141 is used for embedding the controller 3. The locking structure 15 is connected between the protective cover 14 and the cabinet body 11 to achieve relative fixation of the protective cover 14 and the cabinet body 11. The locking structure 15 includes a buckle 151 and a snap ring 152, and the snap ring 152 is fixedly connected to the cabinet body 11, and the snap ring 152 is embedded in the receiving cavity 141. The buckle 151 is fixedly connected to the wall of the accommodating chamber 141. The buckle 151 is located on the side of the protective cover 14 away from the rotation axis of the protective cover 14. The buckle 151 is embedded in the snap ring 152. The end of the buckle 151 away from the wall of the accommodating chamber 141 is provided with a second chamfer 1511. The second chamfer 1511 is located on the side of the buckle 151 away from the bottom of the accommodating chamber 141. The second chamfer 1511 is used for the outer periphery of the snap ring 152 to abut.

[0057] Reference Fig.10The switch cabinet body 1 further includes a magnetic block 16 and an electromagnet 17. The magnetic block 16 is fixedly connected to a surface of the protective cover 14 close to the cabinet body 11, and the magnetic block 16 is located on a side of the protective cover 14 close to the buckle 151. The electromagnet 17 is fixedly connected to the cabinet body 11, and the electromagnet 17 and the magnetic block 16 attract each other.

[0058] The implementation principle of a mobile high-voltage switchgear with an electric trolley control function in an embodiment of the present application is as follows: after the switchgear is powered off, the protective cover 14 is opened, the electric mode is selected, the controller 3 sends a signal to the drive cylinder 24, the piston rod of the drive cylinder 24 contracts, and drives the sliding seat 225 to slide in the direction close to the cabinet door 12, and the transmission section 291 abuts against the first chamfer 2812, so that the transmission section 291 is located in the limit hole 2811, so as to realize the circumferential fixation of the connecting shaft 29 and the driving pulley 281, the first contact switch 27 is closed, the drive motor 25 is in a standby state, and the push rod 210 pushes the ring 211 to be sleeved on the outer periphery of the block 231, thereby preventing the crank handle from being connected to the block 231. The controller 3 sends a signal to the drive motor 25, and the drive motor 25 works, driving the connecting shaft 29 to rotate, driving the active pulley 281 to rotate, driving the driven pulley 282 to rotate through the belt body 283, driving the screw rod 23 to rotate, and the screw rod 23 is threadedly connected to the connecting block 2241, driving the mounting seat 224 to slide, and driving the circuit breaker body 21 to move, so as to realize the closing or opening of the circuit breaker body 21 and the static contact.

[0059] When the manual mode is selected, the controller 3 sends a signal to the drive cylinder 24, and the piston rod of the drive cylinder 24 extends, driving the sliding seat 225 to slide in the direction away from the cabinet door 12, and the transmission section 291 disengages from the limit hole 2811, so that the active pulley 281 rotates and connects to the support section 292, the first contact switch 27 is disconnected, and the drive motor 25 is in a power-off state. The top rod 210 drives the collar 211 to be embedded in the ring groove 22151, and the operator rotates the knob 18 to drive the baffle 13 to rotate, so that the operating port 121 is connected to the external circuit breaker chamber 111, and one end of the crank handle is embedded in the operating port 121, so that the crank handle and the block 231 are relatively fixed, and the crank handle is rotated to drive the screw rod 23 to rotate. The screw rod 23 is threadedly connected to the connecting block 2241, driving the mounting seat 224 to slide, and driving the circuit breaker body 21 to move, so as to realize the closing or opening of the circuit breaker body 21 and the static contact.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mobile high-voltage switchgear with electric trolley control function, characterized in that: The invention comprises a cabinet (11), a cabinet door (12), a circuit breaker body (21), a chassis (22), a screw rod (23), a drive cylinder (24), a drive motor (25), a power source (26), a transmission assembly (28), a connecting shaft (29) and a controller (3); a circuit breaker chamber (111) is provided on one side of the cabinet (11); the cabinet door (12) is connected to the cabinet (11) and covers the circuit breaker chamber (111); the chassis (22) is embedded in the circuit breaker chamber (111); the circuit breaker body (21) is slidably connected to the chassis (22); the sliding direction of the circuit breaker body (21) is parallel to the depth direction of the circuit breaker chamber (111); the screw rod (23) is parallel to the depth direction of the circuit breaker chamber (111); 3) rotatably connected to the chassis (22); the rotation axis of the screw rod (23) is parallel to the sliding direction of the circuit breaker body (21); the screw rod (23) is threadedly connected to the circuit breaker body (21); the drive motor (25) is slidably connected to the chassis (22); the sliding direction of the drive motor (25) is parallel to the axial direction of the screw rod (23); the drive motor (25) is used to drive the screw rod (23) to rotate; the connecting shaft (29) is coaxially connected to the output shaft of the drive motor (25); the transmission assembly (28) is connected between the connecting shaft (29) and the screw rod (23); the transmission assembly (28) includes a driving pulley (281), a driven pulley (282) and a belt body (283); the driving pulley (281) is coaxially connected to the outer periphery of the connecting shaft (29); the driven pulley (282) is coaxially connected to the outer periphery of the screw rod (23); the belt body (283) is sleeved on the outer peripheries of the driving pulley (281) and the driven pulley (282); the outer periphery of the connecting shaft (29) is coaxially connected with a transmission section (291) and a support section (292); one end of the transmission section (291) is connected to one end of the support section (292); the driving pulley (281) is coaxially provided with a limiting hole (2811); the transmission section (291) and the support section (292) are both coaxially slidably embedded in the limiting hole (2811); the transmission section (291) is circumferentially fixed to the limiting hole (2811); the supporting section (292) is coaxially rotatable and embedded in the limiting hole (2811); the power supply (26) is connected to the chassis (22); the power supply (26) provides power to the driving motor (25); the driving cylinder (24) is connected to the chassis (22); the driving cylinder (24) is used to drive the driving motor (25) to slide; the controller (3) is connected to the cabinet (11); the controller (3) is used to control the driving cylinder (24) to work so as to connect or disconnect the driving motor (25) from the screw rod (23); the controller (3) is used to control the driving motor (25) to work so as to rotate the screw rod (23).

2. The mobile high-voltage switch cabinet with electric trolley control function according to claim 1 is characterized in that: The vehicle further comprises a first contact switch (27); the first contact switch (27) is connected to the chassis vehicle (22); the first contact switch (27) is electrically connected to the power source (26) and the drive motor (25); the first contact switch (27) is used for abutment with the drive motor (25); when the drive motor (25) is connected to the lead screw (23), the first contact switch (27) is closed.

3. The mobile high-voltage switch cabinet with electric trolley control function according to claim 1 is characterized in that: When the support section (292) is embedded in the limiting hole (2811), a first chamfer (2812) is provided at one end of the hole wall of the limiting hole (2811) close to the transmission section (291); the first chamfer (2812) is used for abutting against one end of the transmission section (291) close to the support section (292).

4. The mobile high-voltage switch cabinet with electric trolley control function according to claim 3 is characterized in that: It also comprises a baffle (13); the cabinet door (12) is provided with an operating opening (121); the baffle (13) is connected to the cabinet door (12) and covers the operating opening (121); an end of the screw rod (23) close to the cabinet door (12) is connected to a clamping block (231); the clamping block (231) is used to be connected to a crank; and the clamping block (231) is embedded in a notch of the manual crank.

5. The mobile high-voltage switch cabinet with electric trolley control function according to claim 4 is characterized in that: It also comprises a push rod (210) and a collar (211); the support section (292) is located on a side of the transmission section (291) close to the cabinet door (12); one end of the push rod (210) is connected to a drive motor (25); the collar (211) is connected to the other end of the push rod (210); the collar (211) is coaxially sleeved on the outer circumference of the clamping block (231); when the transmission section (291) is located in the limiting hole (2811), one end of the collar (211) away from the drive motor (25) is flush with one end of the clamping block (231) away from the drive motor (25).

6. The mobile high-voltage switch cabinet with electric trolley control function according to claim 1 is characterized in that: It also comprises a protective cover (14) and a locking structure (15); the protective cover (14) is rotatably connected to the cabinet (11); the protective cover (14) is provided with a receiving cavity (141); the receiving cavity (141) is used for embedding the controller (3); and the locking structure (15) is connected between the protective cover (14) and the cabinet (11) to achieve relative fixation of the protective cover (14) and the cabinet (11).

7. The mobile high-voltage switch cabinet with electric trolley control function according to claim 6 is characterized in that: It also includes a magnetic block (16) and an electromagnet (17); the magnetic block (16) is connected to the protective cover (14); the electromagnet (17) is connected to the cabinet (11); and the electromagnet (17) and the magnetic block (16) attract each other.

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