An armored withdrawable switchgear

Abstract

The present invention discloses an armored draw-out switchgear, specifically relating to the technical field of mobile switchgears, including a cabinet body, and the cabinet body is provided with an instrument room, a circuit breaker room, a busbar room, a cable room, and a vacuum circuit breaker arranged inside the circuit breaker room. It includes a trolley mechanism, a buffer mechanism arranged in the circuit breaker room, and a position sensor for detecting the buffer amount of the buffer mechanism; the position sensor and the angle measurement sensor are signal-connected to a control module, and the trolley mechanism detects its own state through the control module to judge when to fix its own position. By arranging a pulley assembly, an angle measurement sensor, and a position sensor in the trolley mechanism and connecting them to the control module, automatic detection and locking of the position of the trolley mechanism are achieved, improving the accuracy of operation while saving a great deal of effort, and being able to accurately judge whether the trolley mechanism and the vacuum circuit breaker reach the predetermined positions.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile switch cabinets, and more specifically, to an armored withdrawable switch cabinet. Background Art

[0002] In the power system, as an important power distribution device, the armored withdrawable switch cabinet is widely used in various power places.

[0003] However, in the traditional armored withdrawable switch cabinet, the movement and position fixation of the trolley mechanism often rely on manual operation, which not only increases the operation difficulty and time, but also has the risk of inaccurate operation. Especially when the vacuum circuit breaker needs to be moved into or out of the circuit breaker chamber, the staff needs to spend a lot of effort and it is difficult to accurately judge whether the trolley mechanism and the vacuum circuit breaker reach the predetermined position.

[0004] To solve the above defects, a technical solution is provided now. Summary of the Invention

[0005] In order to overcome the above defects of the prior art, an embodiment of the present invention provides an armored withdrawable switch cabinet to solve the problems raised in the above background art. To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An armored withdrawable switch cabinet includes a cabinet body, the cabinet body is provided with an instrument room, a circuit breaker chamber, a busbar chamber, a cable chamber, and a vacuum circuit breaker disposed inside the circuit breaker chamber, including a trolley mechanism, a buffer mechanism disposed in the circuit breaker chamber, and a position sensor for detecting the buffer amount of the buffer mechanism; the trolley mechanism includes a car plate, a pulley assembly disposed inside the car plate, a towing rope disposed on the pulley assembly, a grip disposed on the car plate, an angle measurement sensor for detecting the offset angle of the grip, and a fixing component; the position sensor and the angle measurement sensor are signal-connected to a control module, and the trolley mechanism detects its own state through the control module to judge when to fix its own position.

[0007] In a preferred embodiment, the control module includes: an angle monitoring unit for collecting the offset angle of the grip detected by the angle measurement sensor; a buffer detection unit for collecting the buffer amount of the buffer mechanism detected by the position sensor; a data processing unit, the angle monitoring unit transmits the offset angle of the grip detected by the angle measurement sensor to the data processing unit, the buffer detection unit transmits the buffer amount of the buffer mechanism detected by the position sensor to the data processing unit, and the data processing unit performs weighted summation based on the offset angle of the grip and the buffer amount of the buffer mechanism to comprehensively determine whether to lock the position of the trolley mechanism.

[0008] In a preferred embodiment, the buffer mechanism includes a buffer plate disposed on the bottom wall of the circuit breaker chamber and a buffer spring fixedly connected to the buffer plate.

[0009] In a preferred embodiment, the buffering amount of the buffer mechanism is the difference between the initial elongation of the buffer spring and the buffer elongation after buffering the handcart mechanism.

[0010] In a preferred embodiment, a sliding arc groove is formed at the front end of the car plate, one end of the grip is slidably connected to the sliding arc groove, and the other end of the grip is rotatably connected to the front end of the car plate.

[0011] In a preferred embodiment, the pulley assembly includes a fixed rod fixedly connected to the car plate, a rotating rod rotatably connected to the fixed rod, and a ratchet member disposed at the end of the rotating rod; a ratchet groove is formed on the car plate, and the ratchet member is rotatably disposed in the ratchet groove.

[0012] In a preferred embodiment, a rope passing groove is further formed on the car plate, the rope passing groove is disposed at the end of the sliding arc groove, the rope passing groove penetrates the car plate, and both ends of the pulling rope are fixedly connected to the rotating rod and one end of the grip respectively.

[0013] In a preferred embodiment, the outer wheel of the ratchet member is made of a metal material, and the fixing assembly includes a clamping magnetic block fixed on the pulling rope, and the clamping magnetic block can be adsorbed to the outer wheel.

[0014] In a preferred embodiment, the fixing assembly further includes a sliding rod fixed between the pulling rope and the grip, a side groove formed on the sliding rod, a clamping plate slidably connected to the side groove, a telescopic spring with both ends fixedly connected to the inner wall of the side groove and the clamping plate respectively, and a moving rod fixedly connected to the clamping plate; a moving groove and a plate groove are formed at one end of the grip, the moving rod passes through the moving groove and extends out of the grip, and a clamping groove is formed on the car plate, and the clamping groove is located at the lower end of the sliding arc groove and communicates with the sliding arc groove.

[0015] In a preferred embodiment, a rolling groove is formed on the bottom wall of the circuit breaker chamber, and an arc surface is provided at the port of the rolling groove.

[0016] Technical effects and advantages of the present invention:

[0017] 1. In the present invention, by providing a pulley assembly, an angle measurement sensor, and a position sensor in the trolley mechanism and connecting them to a control module, the automatic detection and locking of the position of the trolley mechanism are achieved. This overcomes the defect that the movement and position fixation of the trolley mechanism in traditional armored withdrawable switchgear rely on manual operation, reduces the operation difficulty and time, and at the same time reduces the risk of inaccurate operation. Especially when moving the vacuum circuit breaker into or out of the circuit breaker chamber, a large amount of effort can be saved, and it can accurately judge whether the trolley mechanism and the vacuum circuit breaker reach the predetermined position.

[0018] 2. In the present invention, through the sliding connection design of the sliding arc groove opened at the front end of the trolley board and the grip, the grip can be flexibly switched between the horizontal and vertical directions, which is convenient for the operation of the staff. At the same time, this design also increases the stability of the trolley mechanism during the movement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings;

[0020] Figure 1 It is a schematic structural diagram of an armored withdrawable switchgear proposed by the present invention;

[0021] Figure 2 It is a schematic structural diagram of the vacuum circuit breaker of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the trolley mechanism of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the rope threading groove of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the fixing component of the present invention;

[0025] Figure 6 It is a schematic structural diagram of the ratchet member of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the plate groove of the present invention;

[0027] Figure 8 It is a schematic structural diagram of the arc surface of the present invention;

[0028] Figure 9 It is a flow chart of an armored withdrawable switchgear of the present invention.

[0029] In the figure: 100, cabinet body; 101, instrument room; 102, circuit breaker room; 103, busbar room; 104, cable room; 105, vacuum circuit breaker; 102a, rolling groove; 102b, arc surface; 200, trolley mechanism; 201, trolley board; 202, pulley assembly; 203, towing rope; 204, grip; 205, fixing assembly; 201a, arc sliding groove; 201b, ratchet groove; 201c, rope threading groove; 201d, clamping groove; 202a, fixed rod; 202b, rotating rod; 202c, ratchet part; 204a, shifting groove; 204b, board groove; 205a, clamping magnetic block; 205b, sliding rod; 205c, side groove; 205d, clamping plate; 205e, telescopic spring; 205f, shifting rod; 300, buffer mechanism; 301, buffer plate; 302, buffer spring. Specific embodiments

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1

[0032] As Figures 1 to 8 shown, an armored draw-out switchgear in an embodiment of the present invention includes a cabinet body 100. The cabinet body 100 is provided with an instrument room 101, a circuit breaker room 102, a busbar room 103, a cable room 104, and a vacuum circuit breaker 105 disposed inside the circuit breaker room 102. It includes a trolley mechanism 200, a buffer mechanism 300 disposed in the circuit breaker room 102, and a position sensor for detecting the buffering amount of the buffer mechanism 300. The trolley mechanism 200 includes a trolley board 201, a pulley assembly 202 disposed inside the trolley board 201, a towing rope 203 disposed on the pulley assembly 202, a grip 204 disposed on the trolley board 201, an angle measurement sensor for detecting the deviation angle of the grip 204, and a fixing assembly 205. The position sensor and the angle measurement sensor are signal-connected to a control module, and the trolley mechanism 200 detects its own state through the control module to determine when to fix its own position.

[0033] Further, when it is necessary to move the vacuum circuit breaker 105 out of or into the circuit breaker, the movement of the trolley mechanism 200 is controlled by pushing or pulling the grip 204. Then, when driving the vacuum circuit breaker 105 on the trolley mechanism 200 to move out of or into the circuit breaker, the vacuum circuit breaker 105 is installed on the trolley board 201. When the vacuum circuit breaker 105 needs to enter the predetermined position in the circuit breaker chamber 102, first rotate the horizontal grip 204 to the vertical position, and then push the trolley board 201 inward. The circuit breaker follows the trolley board 201 and continuously moves into the circuit breaker chamber 102. At this time, the pulley assembly 202 rotates continuously, and thus can smoothly drive the vacuum circuit breaker 105 into the circuit breaker chamber 102, saving the effort of the staff and facilitating the operation of the staff. At this time, the movement of the pulley assembly 202 drives the movement of the pull rope 203, and then rotates the vertical grip 204, making the vertical grip 204 gradually become horizontal. The angle between the real-time deflection position of the grip 204 to the horizontal position is taken as the offset angle of the grip 204. As the vacuum circuit breaker 105 continuously moves into the circuit breaker chamber, the trolley board 201 will gradually approach the buffer assembly. By detecting the buffer amount of the buffer mechanism 300 through the vacuum circuit breaker entering the circuit breaker chamber 102 and detecting the offset angle of the grip 204 through the angle measurement sensor, it is judged whether the trolley mechanism 200 drives the vacuum circuit breaker 105 to reach the predetermined position. When the trolley mechanism 200 drives the vacuum circuit breaker 105 to reach the predetermined position, the staff twists the grip 204 to drive the fixing component 205 to lock the pulley assembly 202, thereby fixing the positions of the trolley mechanism 200 and the vacuum circuit breaker 105. The cooperation between the trolley mechanism 200 and the control module is beneficial to assisting the vacuum circuit breaker 105 to enter the circuit breaker chamber 102, and at the same time is beneficial to analyzing whether the trolley mechanism 200 and the vacuum circuit breaker 105 reach the predetermined position, providing a strong guarantee for the stable operation of the switch cabinet.

[0034] As Figures 1 to 3 shown, the buffer mechanism 300 includes a buffer plate 301 provided on the bottom wall of the circuit breaker chamber 102, and a buffer spring 302 fixedly connected to the buffer plate 301.

[0035] Further, the buffer mechanism 300 is beneficial to reducing the impact generated when the trolley mechanism 200 moves quickly or stops, and is beneficial to protecting the internal structure of the switch cabinet and the vacuum circuit breaker 105. When the trolley mechanism 200 quickly approaches or leaves its predetermined position, the buffer spring 302 absorbs and releases energy, effectively reducing the impact.

[0036] Please refer specifically to Figures 1 to 5 shown, a sliding arc groove 201a is provided at the front end of the trolley board 201. One end of the grip 204 is slidably connected to the sliding arc groove 201a, and the other end of the grip 204 is rotatably connected to the front end of the trolley board 201.

[0037] Further, when the grip 204 rotates horizontally to vertically or from vertically to horizontally, it rotates around the other end of the grip 204, and one end of the grip 204 slides within the sliding arc groove 201a.

[0038] Please refer specifically to Figures 1 to 6 As shown, the pulley assembly 202 includes a fixed rod 202a fixedly connected to the vehicle board 201, a rotating rod 202b rotatably connected to the fixed rod 202a, and a ratchet member 202c provided at the end of the rotating rod 202b; a ratchet groove 201b is formed on the vehicle board 201, and the ratchet member 202c is placed therein for rotation.

[0039] Please refer specifically to Figures 1 to 6 As shown, a rope passing groove 201c is further formed on the vehicle board 201. The rope passing groove 201c is located at the end of the sliding arc groove 201a and penetrates through the vehicle board 201. Both ends of the towing rope 203 are fixedly connected to the rotating rod 202b and one end of the grip 204 respectively.

[0040] Further, the ratchet member 202c is a new type of ratchet mechanism. When the handcart mechanism 200 drives the vacuum circuit breaker 105 to move into the circuit breaker chamber 102, the outer wheel of the ratchet member 202c rotates forward at this time. When the outer wheel rotates forward, it drives the inner wheel of the ratchet member 202c to rotate simultaneously, and then drives the rotating rod 202b to rotate simultaneously. At this time, it drives the towing rope 203 to wind around the rotating rod 202b. Due to the size difference between the outer wheel of the ratchet member 202c and the rotating rod 202b, when the handcart mechanism 200 moves a large distance, the towing rope 203 can only drive one end of the grip 204 to move a short distance. And when the handcart mechanism 200 moves to the preset position, the towing rope 203 just drives the grip 204 to deflect from vertical to horizontal. When the handcart mechanism 200 drives the vacuum circuit breaker 105 to move outward from the circuit breaker, first deflects the horizontal grip 204 to vertical. At this time, the towing rope 203 drives the rotating rod 202b to rotate. The rotation of the rotating rod 202b drives the inner wheel of the ratchet member 202c to reverse. At this time, the reverse rotation of the inner wheel does not drive the outer wheel to rotate. At this time, the towing rope 203 wound around the rotating rod 202b unwinds, and then pulls the vertical grip 204 to pull the handcart mechanism 200 outwards. At this time, the outer wheel of the ratchet member 202c reverses and does not drive the inner wheel to rotate. At this time, the ratchet member 202c can assist the handcart mechanism 200 to move the vacuum circuit breaker 105 out of the circuit breaker chamber 102.

[0041] Please refer specifically to Figures 1 to 6 As shown, the outer wheel of the ratchet member 202c is made of a metal material. The fixing assembly 205 includes a clamping magnetic block 205a fixed on the towing rope 203, and the clamping magnetic block 205a can be adsorbed to the outer wheel.

[0042] Furthermore, when the trolley mechanism 200 drives the vacuum circuit breaker 105 to a predetermined position in the circuit breaker chamber 102, the pull rope 203 is wrapped around the rotating rod 202b for multiple turns. At this time, the locking magnetic block 205a follows the pull rope 203 and moves to a state where it can be adsorbed with the outer wheel of the ratchet part 202c. At this time, the position of the pull rope 203 does not move, and the locking magnetic block 205a fixes the outer wheel of the ratchet part 202c. At this time, the outer wheel of the ratchet part 202c cannot be used to drive the trolley mechanism 200 and the vacuum circuit breaker 105 to move. Therefore, the position of the trolley mechanism 200 and the vacuum circuit breaker 105 can be quickly locked by the locking magnetic block 205a.

[0043] Please pay attention to Figures 1 to 7 As shown, the fixing assembly 205 further includes a slide bar 205b fixed between the traction rope 203 and the handle 204, a side groove 205c provided on the slide bar 205b, a clamping plate 205d slidably connected to the side groove 205c, a telescopic spring 205e whose two ends are respectively fixed to the inner wall of the side groove 205c and the clamping plate 205d, and a shifting rod 205f fixedly connected to the clamping plate 205d;

[0044] A shift groove 204a and a plate groove 204b are formed at one end of the handle 204, and the shift rod 205f passes through the shift groove 204a and extends out of the handle 204. A clamping groove 201d is formed on the vehicle plate 201, and the clamping groove 201d is located at the lower end of the sliding arc groove 201a and is connected to the sliding arc groove 201a.

[0045] Specifically, in order to further lock the trolley mechanism 200 and the vacuum circuit breaker 105 in a preset position, the slide bar 205b is placed in the arc slot 201a to slide. When the handle 204 is horizontal, the telescopic spring 205e is in a normal state, one end of the card plate 205d is placed in the side slot 205c, and the other end of the card plate 205d is placed in the card slot 201d. At this time, the position of the handle 204 is locked, which is beneficial to prevent the trolley mechanism 200 and the vacuum circuit breaker 105 from being displaced when the switch cabinet is shaken by external force; when the handle 204 needs to be turned vertically, the shift rod 205f is moved, and the shift rod 205f moves to drive the card plate 205d to move into the side slot 205c, and the handle 204 can be rotated at this time.

[0046] Please pay attention to Figures 1 to 8 As shown, a rolling groove 102a is provided on the bottom wall of the circuit breaker chamber 102, and an arc surface 102b is provided at the end of the rolling groove 102a.

[0047] Further, when the ratchet member 202c enters the rolling groove 102a, the trolley mechanism 200 can contact the bottom wall of the circuit breaker chamber 102 at this time, thereby further enhancing the stability of the trolley mechanism 200. The arc surface 102b is provided to facilitate the rotation of the ratchet member 202c to drive the movement of the trolley mechanism 200.

[0048] Embodiment 2

[0049] As Figures 1 to 9 shown, please refer with emphasis to Figure 9 shown, the control module includes: an angle monitoring unit for collecting the offset angle of the grip 204 detected by the angle measurement sensor; a buffer detection unit for collecting the buffer amount of the buffer mechanism 300 detected by the position sensor; and a data processing unit. The angle monitoring unit transmits the offset angle of the grip 204 detected by the angle measurement sensor to the data processing unit, and the buffer detection unit transmits the buffer amount of the buffer mechanism 300 detected by the position sensor to the data processing unit. The data processing unit determines whether to lock the position of the trolley mechanism 200 by performing weighted summation based on the offset angle of the grip 204 and the buffer amount of the buffer mechanism 300.

[0050] The buffer amount of the buffer mechanism 300 is the difference between the initial elongation of the buffer spring 302 and the buffer elongation after buffering the trolley mechanism 200.

[0051] Further, the angle between the real-time deflection position of the grip 204 and the horizontal position is used as the offset angle of the grip 204. The larger the values of the offset angle of the grip 204 and the buffer amount of the buffer mechanism 300, the greater the gap between the trolley mechanism 200 and the vacuum circuit breaker 105 from the preset position.

[0052] Specifically, the automatic adjustment of the control module is mainly related to two factors. One is the offset angle of the grip 204 detected by the angle measurement sensor, and the other is the buffer amount of the buffer mechanism 300 detected by the position sensor. The data processing unit determines whether to lock the position of the trolley mechanism 200 by performing weighted summation based on the offset angle of the grip 204 and the buffer amount of the buffer mechanism 300.

[0053] To combine the offset angle of the grip 204 and the buffer amount of the buffer mechanism 300 by weighted summation, we have respectively labeled them as and V, and introduced two weights and to represent their importance in the weighted summation.

[0054] The weighted summation expression can be: = × + ×V

[0055] Where: represents the offset angle of the grip 204.

[0056] V represents the buffering capacity of the buffering mechanism 300.

[0057] is the weight of the offset angle of the grip 204.

[0058] is the weight of the buffering capacity of the buffering mechanism 300.

[0059] Among them, the result of the weighted sum reflects the gap between the trolley mechanism 200 and the vacuum circuit breaker 105 from the preset position. A threshold T can be set to determine when to lock the position of the trolley mechanism 200.

[0060] Where: T is a preset threshold, set according to the actual situation, indicating that when the comprehensive evaluation result is lower than the threshold T, it means that the position of the trolley mechanism 200 can be locked. When the comprehensive evaluation result is higher than the threshold T, the position of the trolley mechanism 200 needs to be adjusted again, and then the comprehensive evaluation result S is carried out again until the comprehensive evaluation result S is lower than the threshold T to lock the position of the trolley mechanism 200.

[0061] Fix the trolley mechanism 200 = ;

[0062] In practical applications, the weights and should be selected based on specific application scenarios and requirements to ensure that they can accurately reflect the relative importance in that scenario. At the same time, the sum of these two weights should usually be equal to 1 (or 100%, if expressed as a percentage) to indicate that they together constitute all the weights of the entire weighted sum.

[0063] The angle measurement sensor of the grip 204 detects the offset angle of the grip and transmits it to the data processing unit through the angle monitoring unit. The buffering detection unit transmits the buffering capacity of the buffering mechanism 300 detected by the position sensor to the data processing unit. The data processing unit substitutes the relevant information into = × + ×V. The data processing unit determines when to lock the position of the trolley mechanism 200 by comparing the magnitudes of , T. When At time T, at this moment, by rotating the grip 204, the side groove 205c of the grip 204 is aligned with the card slot 201d of the vehicle board 201. At this time, the telescopic spring 205e resets to drive the clamping plate 205d into the card slot 201d. At this time, the position of the fixed magnet is fixed, so the position of the handcart mechanism 200 is locked; when > T, move the position of the handcart mechanism 200 again, and then perform the comprehensive evaluation result S again until the comprehensive evaluation result S is lower than the threshold T to lock the position of the handcart mechanism 200.

[0064] The above formulas are all dimensionless and take their numerical values for calculation. The formula is a formula obtained by collecting a large amount of data for software simulation to get the closest to the actual situation. The preset parameters in the formula are set by those skilled in the art according to the actual situation.

[0065] It should be understood that in various embodiments of the present application, the magnitudes of the serial numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0066] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the present application.

[0067] In several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0068] The units described as separate components may or may not be physically separated. The components shown as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0069] In addition, in each embodiment of the present application, each functional unit may be integrated into one processing unit, may exist physically alone for each unit, or two or more units may be integrated into one unit.

[0070] As mentioned above, the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claimed rights.

Claims

1. A metal-clad withdrawable switchgear, comprising a cabinet body (100), wherein the cabinet body (100) is provided with an instrument compartment (101), a circuit breaker compartment (102), a busbar compartment (103), a cable compartment (104), and a vacuum circuit breaker (105) disposed inside the circuit breaker compartment (102), characterized in that: Including a trolley mechanism (200), a buffer mechanism (300) provided in the circuit breaker chamber (102), and a position sensor for detecting the buffering amount of the buffer mechanism (300); The trolley mechanism (200) includes a trolley board (201), a pulley assembly (202) provided in the trolley board (201), a traction rope (203) provided on the pulley assembly (202), a grip (204) provided on the trolley board (201), an angle measurement sensor for detecting the offset angle of the grip (204), and a fixing component (205); The position sensor and the angle measurement sensor are signal-connected to a control module, and the trolley mechanism (200) detects its own state through the control module to determine when to fix its own position; A sliding arc groove (201a) is provided at the front end of the trolley board (201), one end of the grip (204) is slidably connected to the sliding arc groove (201a), and the other end of the grip (204) is rotatably connected to the front end of the trolley board (201); The pulley assembly (202) includes a fixed rod (202a) fixedly connected to the trolley board (201), a rotating rod (202b) rotatably connected to the fixed rod (202a), and a ratchet member (202c) provided at the end of the rotating rod (202b); A ratchet groove (201b) is provided on the trolley board (201), and the ratchet member (202c) is placed in the ratchet groove (201b) and rotates; A rope passing groove (201c) is also provided on the trolley board (201), the rope passing groove (201c) is placed at the end of the sliding arc groove (201a), the rope passing groove (201c) penetrates the trolley board (201), and both ends of the traction rope (203) are fixedly connected to the rotating rod (202b) and one end of the grip (204) respectively.

2. The armored draw-out switchgear according to claim 1, characterized in that: The control module includes: An angle monitoring unit for collecting the offset angle of the grip (204) detected by the angle measurement sensor; A buffer detection unit for collecting the buffering amount of the buffer mechanism (300) detected by the position sensor; A data processing unit. The angle monitoring unit transmits the offset angle of the grip (204) detected by the angle measurement sensor to the data processing unit, the buffer detection unit transmits the buffering amount of the buffer mechanism (300) detected by the position sensor to the data processing unit, and the data processing unit performs weighted summation based on the offset angle of the grip (204) and the buffering amount of the buffer mechanism (300) to comprehensively determine whether to lock the position of the trolley mechanism (200).

3. A metal-clad withdrawable switchgear according to claim 2, characterized in that: The buffer mechanism (300) includes a buffer plate (301) provided on the bottom wall of the circuit breaker chamber (102), and a buffer spring (302) fixedly connected to the buffer plate (301).

4. The armored draw-out switchgear according to claim 3, characterized in that: The buffering amount of the buffer mechanism (300) is the difference between the initial elongation of the buffer spring (302) and the buffer elongation after buffering the trolley mechanism (200).

5. A metal-clad withdrawable switchgear according to claim 1, characterized in that: The outer wheel of the ratchet member (202c) is made of a metal material. The fixing assembly (205) includes a clamping magnet (205a) fixed on the leash (203), and the clamping magnet (205a) can be adsorbed to the outer wheel.

6. The armored withdrawable switchgear according to claim 5, characterized in that: The fixing assembly (205) further includes a sliding rod (205b) fixed between the leash (203) and the grip (204), a side groove (205c) opened on the sliding rod (205b), a clamping plate (205d) slidably connected to the side groove (205c), a telescopic spring (205e) with two ends respectively fixed to the inner wall of the side groove (205c) and the clamping plate (205d), and a moving rod (205f) fixedly connected to the clamping plate (205d); One end of the grip (204) is provided with a moving groove (204a) and a plate groove (204b). The moving rod (205f) passes through the moving groove (204a) and extends out of the grip (204). A clamping groove (201d) is opened on the vehicle plate (201), and the clamping groove (201d) is located at the lower end of the sliding arc groove (201a) and communicates with the sliding arc groove (201a).

7. The armored draw-out switchgear according to claim 2, wherein: A rolling groove (102a) is opened on the bottom wall of the circuit breaker chamber (102), and an arc surface (102b) is provided at the port of the rolling groove (102a).

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