Switch cabinet external electric operating device with calibration function and method thereof

Abstract

The application discloses a switch cabinet external electric operating device with a calibration function and a method thereof, and belongs to the technical field of electric operating devices. The switch cabinet external electric operating device comprises a scissor lift and a loading guide assembly. The loading guide assembly comprises a loading assembly and a guide assembly. The loading assembly is installed on the top of the lifting platform of the scissor lift. The guide assembly is arranged on the loading assembly and is connected with the rear side of the base of the scissor lift. The lifting platform of the scissor lift is provided with a positioning calibration driving assembly for positioning the positioning structure on the switch cabinet. The top of the lifting platform of the scissor lift is provided with a traction driving assembly which is connected with the loading assembly. Through the above mode, the application realizes the accurate adjustment of the height of the scissor lift matched with the switch cabinet, and realizes the automatic pushing of the circuit breaker trolley into the installation cavity of the switch cabinet.

Description

Technical Field

[0001] This invention relates to the field of electric operating device technology, and specifically to an external electric operating device for switchgear with calibration function and its method. Background Technology

[0002] The circuit breaker trolley transfer trolley is an external operating device for switchgear used to transfer circuit breaker trolleys.

[0003] The prior art discloses a switch cabinet with an installation cavity for use in installing circuit breaker trolleys. The outer shell of the switch cabinet has two pin holes for positioning the circuit breaker trolley transfer trolley. The pin holes have slots. However, the height of the transfer trolley cannot be adjusted, which makes it inconvenient to transport the circuit breaker trolley.

[0004] Among numerous existing technologies, Chinese patent application CN213948494U discloses a transfer trolley for circuit breaker trucks, which includes a mobile frame. Universal wheels are provided on both sides of one bottom end of the mobile frame, and fixed wheels are provided on both sides of the other bottom end of the mobile frame. A fixed bracket is provided directly above the mobile frame, and adjusting bolts are welded to the four corners of the fixed bracket. The adjusting bolts pass downwards through a fixed block fixed to the mobile frame and are connected to at least one locking nut via threads. Rotary shafts are rotatably connected to both ends of one side of the fixed bracket. A movable bracket is welded to the rotating shafts at both ends of the fixed bracket. An L-shaped limiting baffle is welded along the width direction to the bottom of one end of the movable bracket connected to the fixed bracket.

[0005] However, the height adjustment of this patent application may have slight deviations, which makes it impossible for the transfer trolley to be accurately positioned with the pin holes and slots on the switch cabinet. In addition, the circuit breaker trolley needs to be manually installed into the switch cabinet mounting cavity, and the circuit breaker trolley is generally heavy, making it inconvenient to use.

[0006] Based on this, the present invention designs an external electric operating device and method for switch cabinet with calibration function to solve the above problems. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an external electric operating device and method for switch cabinet with calibration function.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An external electric operating device for a switch cabinet with calibration function includes a scissor lift and a loading guide assembly. The loading guide assembly includes a loading assembly and a guide assembly. The loading assembly is installed on the top of the lifting platform of the scissor lift, and the guide assembly is disposed on the loading assembly. The guide assembly is connected to the rear side of the base of the scissor lift.

[0010] The lifting platform of the scissor lift is equipped with a positioning calibration drive assembly for positioning the switch cabinet, and a traction drive assembly is installed on the top of the lifting platform of the scissor lift. The traction drive assembly is connected to the loading assembly.

[0011] Furthermore, the loading assembly includes a loading plate, a lifting column, and a chute. The loading plate is fixedly connected to the lifting platform of the scissor lift via the lifting column. There are two chutes that are symmetrically opened through the top of the loading plate in the front-back direction. The chute is connected to the traction drive assembly, and the guide assembly is disposed on the loading plate.

[0012] Furthermore, the guiding assembly includes a guide plate, a first pulley groove, a trapezoidal frame, a trapezoidal frame, and a second pulley groove. Two sets of guide plates are symmetrically fixedly installed on the top left and right sides of the loading plate. Two first pulley grooves are symmetrically opened on the top left and right sides of the loading plate. Two trapezoidal frames are symmetrically and detachably installed on the rear side of the base of the scissor lift. The upper end face of the trapezoidal frame is provided with a second pulley groove that works in conjunction with the first pulley groove.

[0013] The distances from the guide plate, the first pulley groove to the center of the loading plate decrease sequentially.

[0014] Furthermore, the positioning calibration drive assembly includes a drive assembly and a positioning calibration assembly. The drive assembly is installed on the lifting platform of the scissor lift, and there are two sets of positioning calibration assemblies, both of which are connected to the drive assembly.

[0015] Furthermore, the drive assembly includes a first motor, a first pulley assembly, a rotating rod, and a second pulley assembly. The first motor is fixedly installed on the inner top of the lifting platform of the scissor lift. There are two rotating rods, which are symmetrically arranged on the left and right and rotatably connected to the side wall of the lifting platform of the scissor lift. The two rotating rods are connected to each other through the second pulley assembly. The output end of the first motor is connected to the rotating rod located on the right side through the first pulley assembly. The two sets of positioning and calibration components are respectively connected to the two rotating rods.

[0016] Furthermore, the positioning calibration component includes a center correction module, a positioning post, a protrusion, a locking sleeve, and a spring;

[0017] The fixed end rear wall of the center correction module is fixedly connected to the rotating rod end of the positioning calibration component. The positioning post is fixedly installed on the front side of the movable end of the center correction module. The protrusion is fixedly installed on the front end of the outer wall of the positioning post. The locking sleeve is slidably connected to the outer wall of the positioning post. One end of the spring is fixedly connected to the movable end of the center correction module, and the other end of the spring is fixedly connected to the locking sleeve.

[0018] The positioning calibration component also includes a displacement detection sensor and a marker block. The displacement detection sensor is fixedly installed on the front side of the fixed end of the center correction module, and a marker block for use with the displacement detection sensor is fixedly installed on the rear side of the movable end of the center correction module.

[0019] Furthermore, the traction drive assembly includes a second motor, a lead screw, a connecting rod, a slider, a guide groove, a traction block, and a push-pull electromagnet; the second motor is fixedly installed on the top of the lifting platform of the scissor lift, the output end of the second motor is fixedly connected to one end of the lead screw, and the other end of the lead screw is rotatably connected to the top of the scissor lift through a bearing seat; the lower middle part of the connecting rod is threadedly connected to the lead screw; there are two sliders symmetrically fixedly installed on the upper left and right sides of the connecting rod; the upper end of the slider is provided with a guide groove; the traction block is slidably connected to the inner wall of the guide groove in the vertical direction; a push-pull electromagnet is fixedly installed at the bottom of the slider; the output end of the push-pull electromagnet passes through the slider and is fixedly connected to the bottom of the traction block; the two sliders are slidably connected to the two grooves respectively.

[0020] To better achieve the objectives of this invention, the present invention also provides an operation method for an external electric operating device for a switch cabinet, comprising the following steps:

[0021] Step 1: Start the scissor lift to the set height of the matching switchgear installation cavity;

[0022] Step 2: Move the scissor lift so that the positioning pin and the protrusion are inserted into the pin hole and slot on the switch cabinet respectively. At the same time, the locking sleeve abuts against the switch cabinet and slides on the positioning pin to compress the spring until the protrusion is fully inserted into the inner end of the switch cabinet. After the height adjustment and calibration of the scissor lift is completed, start the first motor. The first motor drives the rotating rod on the right side to rotate through the first pulley assembly. The two rotating rods are transmitted and rotate synchronously through the second pulley assembly. The rotating rod drives the positioning pin and the protrusion to rotate. When the protrusion rotates to the point of being misaligned with the slot, the protrusion and the locking sleeve lock the switch cabinet.

[0023] Step 3: The position change of the marker block at the moving end of the center correction module is detected by the displacement detection sensor to obtain the height lifting deviation data of the scissor lift. The scissor lift is then calibrated based on this data.

[0024] Step four: The push-pull electromagnet is energized, and the output end of the push-pull electromagnet drives the traction block to slide out from the inner end of the guide groove. The second motor is started, and the second motor drives the lead screw to rotate. The lead screw drives the connecting rod to move threadedly. The connecting rod drives the slider to slide in the slide groove. The side wall of the traction block abuts against the circuit breaker trolley and drives the pulley of the circuit breaker trolley to slide in the first pulley groove, pushing the circuit breaker trolley into the installation cavity of the switch cabinet.

[0025] Compared with the prior art, the beneficial effects of this invention are as follows:

[0026] In use, the height of the circuit breaker trolley on the loading assembly is adjusted by the scissor lift, the circuit breaker trolley on the loading assembly is moved by the traction drive assembly, the positioning calibration drive assembly is used to position the positioning structure on the electrical cabinet and calibrate the lifting height of the scissor lift, and the guide assembly facilitates the transport of the circuit breaker trolley on the loading assembly and guides the movement direction of the circuit breaker trolley. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0028] Figure 1 This invention provides a three-dimensional external electric operating device for a switch cabinet with calibration function. Figure 1 ;

[0029] Figure 2 This is a front view of an external electric operating device for a switch cabinet with calibration function according to the present invention.

[0030] Figure 3 This is a left view of an external electric operating device for a switch cabinet with calibration function according to the present invention.

[0031] Figure 4 A three-dimensional view of a switchgear external electric operating device with calibration function for installing a circuit breaker trolley according to the present invention. Figure 2 ;

[0032] Figure 5 This is a partial perspective view of the present invention;

[0033] Figure 6 For along Figure 2 A sectional view along the AA direction;

[0034] Figure 7 This is a perspective view of the positioning calibration component of the present invention;

[0035] Figure 8 This is a perspective view of the traction drive assembly of the present invention;

[0036] Figure 9 This is a plan view of the switch cabinet of the present invention.

[0037] The labels in the diagram represent:

[0038] 1. Scissor lift 2. Loading guide assembly 21. Loading assembly 211. Loading plate 212. Lifting column 213. Slide groove 22. Guide assembly 221. Guide plate 222. First pulley groove 223. Trapezoidal frame 224. Second pulley groove 3. Positioning calibration drive assembly 31. Drive assembly 311. First motor 312. First pulley assembly 313. Rotating rod 314. Second pulley assembly 32. Positioning calibration assembly 321. Center correction module 322. Positioning column 323. Protrusion 324. Locking sleeve 325. Spring 326. Displacement detection sensor 327. Marking block 4. Traction drive assembly 41. Second motor 42. Lead screw 43. Connecting rod 44. Slider 45. Guide groove 46. Traction block 47. Push-pull electromagnet 5. Circuit breaker trolley. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0040] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0041] Example 1

[0042] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-9 An external electric operating device for a switch cabinet with calibration function includes a scissor lift 1 and a loading guide assembly 2. The loading guide assembly 2 includes a loading assembly 21 and a guide assembly 22. The loading assembly 21 is installed on the top of the lifting platform of the scissor lift 1, and the guide assembly 22 is disposed on the loading assembly 21. The guide assembly 22 is connected to the rear side of the base of the scissor lift 1.

[0043] The lifting platform of the scissor lift 1 is equipped with a positioning calibration drive assembly 3 for positioning the positioning structure on the switch cabinet. The top of the lifting platform of the scissor lift 1 is equipped with a traction drive assembly 4, which is connected to the loading assembly 21.

[0044] In use, the height of the circuit breaker trolley 5 on the loading assembly 21 is adjusted by the scissor lift 1, the circuit breaker trolley 5 on the loading assembly 21 is moved by the traction drive assembly 4, the positioning and calibration drive assembly 3 is used to position the positioning structure on the electrical cabinet and calibrate the lifting height of the scissor lift 1, and the guide assembly 22 is used to facilitate the transport of the circuit breaker trolley 5 on the loading assembly 21 and guide the movement direction of the circuit breaker trolley 5.

[0045] Example 2

[0046] In some embodiments, such as Figure 1-9 As shown, in a preferred embodiment of the present invention, the loading assembly 21 includes a loading plate 211, a lifting column 212 and a chute 213. The loading plate 211 is fixedly connected to the lifting platform of the scissor lift 1 through the lifting column 212. There are two chute 213s that are symmetrically opened through the top of the loading plate 211 in the front-back direction. The chute 213 is connected to the traction drive assembly 4. The guide assembly 22 is disposed on the loading plate 211.

[0047] The guide assembly 22 includes a guide plate 221, a first pulley groove 222, a trapezoidal frame 223, and a second pulley groove 224. There are two sets of guide plates 221, which are symmetrically fixedly installed on the top left and right sides of the loading plate 211. There are two first pulley grooves 222, which are symmetrically opened on the top left and right sides of the loading plate 211. There are two trapezoidal frames 223, which are symmetrically and detachably installed on the rear side of the base of the scissor lift 1. The upper end surface of the trapezoidal frame 223 is provided with a second pulley groove 224 that is used in conjunction with the first pulley groove 222.

[0048] The trapezoidal frame 223 is fixedly connected to the rear side of the base of the scissor lift 1 by bolts.

[0049] The distances from the center of the guide plate 221, the first pulley groove 222 to the loading plate 211 decrease sequentially.

[0050] When the present invention is used, the pulleys on the left and right side walls of the circuit breaker trolley 5 are respectively used to limit the sliding with two sets of first pulley grooves 222 and second pulley grooves 224. When the lifting platform of the scissor lift 1 is lowered to the lowest point, the first pulley groove 222 and the second pulley groove 224 are connected, and the circuit breaker trolley 5 can slide along the first pulley groove 222 and the second pulley groove 224, thereby facilitating the loading and unloading of the circuit breaker trolley 5.

[0051] The positioning calibration drive assembly 3 includes a drive assembly 31 and a positioning calibration assembly 32. The drive assembly 31 is installed on the lifting platform of the scissor lift 1, and there are two sets of positioning calibration assemblies 32, both of which are connected to the drive assembly 31.

[0052] The drive assembly 31 includes a first motor 311, a first pulley assembly 312, a rotating rod 313, and a second pulley assembly 314. The first motor 311 is fixedly installed on the inner top of the lifting platform of the scissor lift 1. There are two rotating rods 313, which are symmetrically arranged on the left and right and rotatably connected to the side wall of the lifting platform of the scissor lift 1. The two rotating rods 313 are connected to each other through the second pulley assembly 314. The output end of the first motor 311 is connected to the rotating rod 313 on the right side through the first pulley assembly 312. Two sets of positioning and calibration assemblies 32 are respectively connected to the two rotating rods 313.

[0053] When this invention is used, the first pulley assembly 312 and the second pulley assembly 314 are both commercially available mature products, which consist of two synchronous pulleys and a transmission belt.

[0054] The positioning calibration component 32 includes a center correction module 321, a positioning post 322, a protrusion 323, a locking sleeve 324, and a spring 325;

[0055] The rear side wall of the fixed end of the center correction module 321 is fixedly connected to the end of the rotating rod 313. The positioning post 322 is fixedly installed on the front side of the movable end of the center correction module 321. The protrusion 323 is fixedly installed on the front end of the outer wall of the positioning post 322. The locking sleeve 324 is slidably connected to the outer wall of the positioning post 322. One end of the spring 325 is fixedly connected to the movable end of the center correction module 321, and the other end of the spring 325 is fixedly connected to the locking sleeve 324.

[0056] The positioning calibration component 32 also includes a displacement detection sensor 326 and a marker block 327. The displacement detection sensor 326 is fixedly installed on the front side of the fixed end of the center correction module 321, and the marker block 327 used in conjunction with the displacement detection sensor 326 is fixedly installed on the rear side of the movable end of the center correction module 321.

[0057] When using this invention, the center correction module 321 is a commercially available mature product, which consists of a fixed end and a movable end.

[0058] When this invention is used, the switch cabinet has two pin holes for positioning the trolley used to transport the circuit breaker handcart 5 in the prior art, and the pin holes are provided with slots; the positioning post 322 and the protrusion 323 of this invention are used to be inserted into the pin holes and slots of the switch cabinet in the prior art.

[0059] In this invention, the height of the circuit breaker trolley 5 on the loading plate 211 can be adjusted by the scissor lift 1 to facilitate the loading and unloading of the circuit breaker trolley 5. However, slight deviations exist in the lifting height of the scissor lift 1, causing the positioning column 322 and its protrusion 323 to not accurately match the pin holes on the switchgear. This invention addresses this by installing the positioning column 322 on the movable end of the center correction module 321. Utilizing the floating function of the movable end of the center correction module 321, the positioning column 322 can be inserted into the pin hole. Simultaneously, the displacement detection sensor 326 detects the positional change of the marker block 327 on the movable end of the center correction module 321, thereby obtaining the height lifting deviation data of the scissor lift 1. The scissor lift 1 calibrates its lifting height based on this data, thus achieving precise adjustment of the scissor lift 1's height to match the pin holes of the switchgear.

[0060] Pushing the scissor lift 1 causes the positioning pin 322 and the protrusion 323 to insert into the pin hole and slot on the switch cabinet, respectively. At the same time, the locking sleeve 324 abuts against the switch cabinet and slides on the positioning pin 322, compressing the spring 325 until the protrusion 323 is fully inserted into the inner end of the switch cabinet. After the height adjustment and calibration of the scissor lift 1 is completed, the first motor 311 is started. The first motor 311 drives the rotating rod 313 on the right side to rotate through the first pulley assembly 312. The two rotating rods 313 are transmitted and rotate synchronously through the second pulley assembly 314. The rotating rod 313 drives the positioning pin 322 and the protrusion 323 to rotate. When the protrusion 323 rotates to the point of being misaligned with the slot, the protrusion 323 and the locking sleeve 324 lock the switch cabinet, thereby realizing the locking between the scissor lift 1 and the switch cabinet.

[0061] The traction drive assembly 4 includes a second motor 41, a lead screw 42, a connecting rod 43, a slider 44, a guide groove 45, a traction block 46, and a push-pull electromagnet 47. The second motor 41 is fixedly installed on the top of the lifting platform of the scissor lift 1. The output end of the second motor 41 is fixedly connected to one end of the lead screw 42. The other end of the lead screw 42 is rotatably connected to the top of the scissor lift 1 through a bearing seat. The lower middle part of the connecting rod 43 is threadedly connected to the lead screw 42. There are two sliders 44, which are symmetrically fixedly installed on the left and right sides of the upper end of the connecting rod 43. The upper end of the slider 44 is provided with a guide groove 45. The traction block 46 is slidably connected to the inner wall of the guide groove 45 in the vertical direction. The bottom of the slider 44 is fixedly installed with a push-pull electromagnet 47. The output end of the push-pull electromagnet 47 passes through the slider 44 and is fixedly connected to the bottom of the traction block 46. The two sliders 44 are slidably connected to the two slide grooves 213 respectively.

[0062] When this invention is used, when it is necessary to push the circuit breaker trolley 5 on the loading plate 211 into the installation cavity of the switchgear, the push-pull electromagnet 47 is energized. The output end of the push-pull electromagnet 47 drives the traction block 46 to slide out from the inner end of the guide groove 45, and starts the second motor 41. The second motor 41 drives the lead screw 42 to rotate. The lead screw 42 drives the connecting rod 43 to move threaded on it. The connecting rod 43 drives the slider 44 to slide in the slide groove 213. When the side wall of the traction block 46 abuts against the circuit breaker trolley 5 and drives the action pulley of the circuit breaker trolley 5 to slide in the first pulley groove 222 until the circuit breaker trolley 5 is pushed into the installation cavity of the switchgear, thus realizing the automatic delivery of the circuit breaker trolley 5 into the installation cavity of the switchgear.

[0063] Example 3

[0064] In some embodiments, such as Figure 1-9 As shown, in a preferred embodiment of the present invention, the present invention also provides an operation method for an external electric operating device for a switch cabinet, comprising the following steps:

[0065] Step 1: Start the scissor lift 1 to the set height of the matching switch cabinet installation cavity;

[0066] Step 2: Move the scissor lift 1 so that the positioning pin 322 and the protrusion 323 are inserted into the pin hole and slot on the switch cabinet respectively. At the same time, the locking sleeve 324 abuts against the switch cabinet and slides on the positioning pin 322 to compress the spring 325 until the protrusion 323 is fully inserted into the inner end of the switch cabinet. After the height adjustment and calibration of the scissor lift 1 is completed, start the first motor 311. The first motor 311 drives the rotating rod 313 on the right side to rotate through the first pulley assembly 312. The two rotating rods 313 are transmitted and rotate synchronously through the second pulley assembly 314. The rotating rod 313 drives the positioning pin 322 and the protrusion 323 to rotate. When the protrusion 323 rotates to the point of being misaligned with the slot, the protrusion 323 and the locking sleeve 324 lock the switch cabinet.

[0067] Step 3: The displacement detection sensor 326 detects the position change of the marker block 327 at the moving end of the center correction module 321 to obtain the height lifting deviation data of the scissor lift 1. The scissor lift 1 calibrates the lifting height based on the data.

[0068] Step four: The push-pull electromagnet 47 is energized. The output end of the push-pull electromagnet 47 drives the traction block 46 to slide out from the inner end of the guide groove 45, and the second motor 41 is started. The second motor 41 drives the lead screw 42 to rotate. The lead screw 42 drives the connecting rod 43 to move threaded on it. The connecting rod 43 drives the slider 44 to slide in the slide groove 213. When the side wall of the traction block 46 abuts against the circuit breaker trolley 5 and drives the action pulley of the circuit breaker trolley 5 to slide in the first pulley groove 222 until the circuit breaker trolley 5 is pushed into the installation cavity of the switch cabinet.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A switch cabinet external electric operating device with calibration function, comprising a scissor lift (1) and a loading guide assembly (2), characterized in that, The loading guide assembly (2) includes a loading assembly (21) and a guide assembly (22). The loading assembly (21) is installed on the top of the lifting platform of the scissor lift (1), and the guide assembly (22) is disposed on the loading assembly (21). The guide assembly (22) is connected to the rear side of the base of the scissor lift (1). The lifting platform of the scissor lift (1) is equipped with a positioning calibration drive assembly (3) for positioning the switch cabinet, and a traction drive assembly (4) is installed on the top of the lifting platform of the scissor lift (1). The traction drive assembly (4) is connected to the loading assembly (21). The positioning calibration drive component (3) includes a drive component (31) and a positioning calibration component (32). The drive component (31) is installed on the lifting platform of the scissor lift (1). There are two sets of positioning calibration components (32), both of which are connected to the drive component (31). The positioning calibration component (32) includes a center correction module (321), a positioning post (322), a protrusion (323), a locking sleeve (324), and a spring (325). The fixed end rear side wall of the center correction module (321) is fixedly connected to the end of the rotating rod (313) of the drive assembly (31), the positioning post (322) is fixedly installed on the front side of the movable end of the center correction module (321), the protrusion (323) is fixedly installed on the front end of the outer wall of the positioning post (322), the locking sleeve (324) is slidably connected to the outer wall of the positioning post (322), one end of the spring (325) is fixedly connected to the movable end of the center correction module (321), and the other end of the spring (325) is fixedly connected to the locking sleeve (324). The positioning calibration component (32) also includes a displacement detection sensor (326) and a marker block (327). The displacement detection sensor (326) is fixedly installed on the front side of the fixed end of the center correction module (321), and the marker block (327) used in conjunction with the displacement detection sensor (326) is fixedly installed on the rear side of the movable end of the center correction module (321).

2. The external electric operating device for switchgear with calibration function according to claim 1, characterized in that, The loading assembly (21) includes a loading plate (211), a lifting column (212), and a chute (213). The loading plate (211) is fixedly connected to the lifting platform of the scissor lift (1) through the lifting column (212). There are two chute (213) that symmetrically penetrate the loading plate (211) along the front-back direction and are located on the top of the loading plate (211). The chute (213) is connected to the traction drive assembly (4). The guide assembly (22) is located on the loading plate (211).

3. The external electric operating device for switchgear with calibration function according to claim 2, characterized in that, The guide assembly (22) includes a guide plate (221), a first pulley groove (222), a trapezoidal frame (223), and a second pulley groove (224). The guide plate (221) has two sets and is symmetrically fixedly installed on the top left and right sides of the loading plate (211). The first pulley groove (222) has two sets and is symmetrically opened on the top left and right sides of the loading plate (211). The trapezoidal frame (223) has two sets and is symmetrically and detachably installed on the rear side of the base of the scissor lift (1). The upper end surface of the trapezoidal frame (223) is provided with a second pulley groove (224) for use with the first pulley groove (222). The distances from the center of the guide plate (221), the first pulley groove (222), and the loading plate (211) decrease sequentially.

4. The external electric operating device for switchgear with calibration function according to claim 1, characterized in that, The drive assembly (31) includes a first motor (311), a first pulley assembly (312), a rotating rod (313), and a second pulley assembly (314). The first motor (311) is fixedly installed on the inner top of the lifting platform of the scissor lift (1). There are two rotating rods (313). The two rotating rods (313) are symmetrically arranged on the left and right and are rotatably connected to the side wall of the lifting platform of the scissor lift (1). The two rotating rods (313) are connected to each other through the second pulley assembly (314). The output end of the first motor (311) is connected to the rotating rod (313) located on the right side through the first pulley assembly (312). The two sets of positioning calibration assemblies (32) are respectively connected to the two rotating rods (313).

5. The external electric operating device for switchgear with calibration function according to claim 1, characterized in that, The traction drive assembly (4) includes a second motor (41), a lead screw (42), a connecting rod (43), a slider (44), a guide groove (45), a traction block (46), and a push-pull electromagnet (47); the second motor (41) is fixedly installed on the top of the lifting platform of the scissor lift (1), the output end of the second motor (41) is fixedly connected to one end of the lead screw (42), and the other end of the lead screw (42) is rotatably connected to the top of the scissor lift (1) through a bearing seat; the lower middle part of the connecting rod (43) is connected to the lead screw (44). 42) Threaded connection, there are two sliders (44) and they are symmetrically fixedly installed on the upper left and right sides of the connecting rod (43). The upper end of the slider (44) is provided with a guide groove (45). The traction block (46) is limited and slidably connected to the inner wall of the guide groove (45) in the vertical direction. The bottom of the slider (44) is fixedly installed with a push-pull electromagnet (47). The output end of the push-pull electromagnet (47) passes through the slider (44) and is fixedly connected to the bottom of the traction block (46). The two sliders (44) are slidably connected to the two slide grooves (213) respectively.

6. The operation method of the external electric operating device for switchgear with calibration function according to claim 5, characterized in that, Includes the following steps: Step 1: Start the scissor lift (1) to the set height of the matching switch cabinet installation cavity; Step 2: Move the scissor lift (1) so that the positioning column (322) and the protrusion (323) are inserted into the pin hole and slot on the switch cabinet respectively. At the same time, the locking sleeve (324) abuts against the switch cabinet and slides on the positioning column (322) and compresses the spring (325) until the protrusion (323) is fully inserted into the inner end of the switch cabinet. After the height adjustment and calibration of the scissor lift (1) is completed, start the first motor (311). The first motor (311) drives the rotating rod (313) on the right side to rotate through the first pulley assembly (312). The two rotating rods (313) are driven and rotated synchronously through the second pulley assembly (314). The rotating rod (313) drives the positioning column (322) and the protrusion (323) to rotate. When the protrusion (323) rotates to the point of being misaligned with the slot, the protrusion (323) and the locking sleeve (324) lock the switch cabinet. Step 3: The displacement detection sensor (326) detects the position change of the marker block (327) at the moving end of the center correction module (321) to obtain the height lifting deviation data of the scissor lift (1). The scissor lift (1) calibrates the lifting height based on the data. Step 4: The push-pull electromagnet (47) is energized. The output end of the push-pull electromagnet (47) drives the traction block (46) to slide out from the inner end of the guide groove (45). The second motor (41) is started. The second motor (41) drives the lead screw (42) to rotate. The lead screw (42) drives the connecting rod (43) to move in a threaded motion. The connecting rod (43) drives the slider (44) to slide in the slide groove (213). The side wall of the traction block (46) abuts against the circuit breaker trolley (5) and drives the pulley of the circuit breaker trolley (5) to slide in the first pulley groove (222), pushing the circuit breaker trolley (5) into the installation cavity of the switch cabinet.

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