Low-voltage complete switch cabinet with long service life

Abstract

The invention relates to a high-service-life low-voltage complete switch cabinet applied to the field of power distribution, a feedback assembly is arranged on a movable mounting plate, a plurality of butt joint grooves with different diameters corresponding to the feedback assembly are formed in a static mounting plate, and in the closing process of a drawer body, the position accuracy of the drawer body can be monitored and fed back in real time through the feedback assembly; when the position of the drawer body deviates, movement of the drawer body can be stopped immediately and early warning can be carried out, so that the movable contact and the static contact are not prone to butt joint dislocation, damage of the movable contact and the static contact is reduced, the service life of the device is prolonged, meanwhile, the position deviation degree of the drawer body can be effectively judged through comparison of actual monitoring data and initial data of the feedback assembly, and the accuracy of the device is improved. Besides, through the arrangement of the image acquisition assembly, image acquisition is performed on the state of the feedback assembly, the position condition of each long rod is obtained, the position deviation degree of the drawer body is further visually and accurately judged, and a more effective data supporting effect is achieved for subsequent inspection of the drawer body.

Description

Technical Field

[0001] The present invention relates to a switch cabinet, in particular to a low-voltage complete switch cabinet with a long service life applied in the field of power distribution. Background Art

[0002] Low-voltage switchgear is suitable for power plants, petroleum, chemical, metallurgy, textile, high-rise buildings and other industries. It is used for power transmission, distribution and power conversion. Low-voltage switchgear can ensure that all electrical components are reliably fixed in the determined position in the cabinet. The cabinet body is generally cubic in shape, such as screen type, box type, drawer type, etc., and low-voltage switchgear is generally used in sets.

[0003] Chinese patent CN115173260B discloses a low-voltage withdrawable explosion-proof complete switchgear cabinet, which can realize automatic drawer opening and closing, and the threaded drawer connection has a good connection effect. It can realize the effect of opening one or more groups of drawers simultaneously, saving time and labor, and can realize air circulation in the drawers to facilitate heat dissipation. It solves the problems of traditional low-voltage withdrawable switchgear that are relatively laborious to pull out and open, and it is relatively laborious to open the drawers one by one during maintenance, and the internal air circulation efficiency is low, and the heat dissipation effect is poor.

[0004] Chinese patent CN119171323B discloses a withdrawable switch cabinet. Through the setting of the pull-out assembly, on the one hand, when the drawer is inserted into the drawer chamber, a repulsive force is generated between the second electromagnetic part and the permanent magnetic part, which plays a buffering role in the insertion of the drawer, avoiding collision between the drawer and the cabinet body, and at the same time avoiding excessive force when the contacts are inserted, reducing wear between the contacts. On the other hand, when the drawer is pulled out of the drawer chamber, the extrusion block will be synchronously pulled out of the limit slide groove, so that the second electromagnetic part gradually moves upward in the limit slide groove under the rebound action of the second elastic part, and generates repulsive force corresponding to the position of the permanent magnetic part again, which helps to pull out the drawer.

[0005] Although a buffer structure is provided in the prior art to buffer the insertion of the drawer to reduce the collision between the moving contact and the static contact, during the drawer insertion process, the horizontal movement accuracy of the drawer is also an important factor affecting the docking of the moving contact and the static contact. When the drawer position is offset, the moving contact and the static contact cannot be accurately docked, thereby affecting the circuit connectivity of the switch cabinet and causing collision damage between the moving contact and the static contact. Summary of the Invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the prior art lacks a means for monitoring the horizontal movement accuracy of the switch cabinet drawer.

[0007] To solve the above problems, the present invention provides a long-life low-voltage complete switch cabinet, comprising a cabinet body, a plurality of drawer bodies slidably connected to the interior of the cabinet body, a movable mounting plate fixedly connected to the rear end of the drawer body, a plurality of static mounting plates corresponding to the movable mounting plates are provided inside the cabinet body, a movable contact and a static contact are fixedly connected to the ends of the movable mounting plates and the static mounting plates close to each other, a driving assembly is connected to the lower end of the drawer body, and a pair of feedback assemblies are further provided on the movable mounting plate, and the feedback assemblies are respectively located on the left and right sides of the movable contact; A pair of mounting slots for mounting a feedback assembly are provided at one end of the movable mounting plate close to the drawer body. The feedback assembly includes a plurality of end posts. A long rod is fixedly connected to one end of the end post away from the drawer body. A perforated plate is slidably sleeved on the outer end of the long rod. A tension spring is fixedly connected between the perforated plate and the end post, and the tension spring is movably sleeved on the outer side of the long rod. The perforated plate and the movable mounting plate are threadedly connected by a pair of bolts. The feedback component also includes an elastic rope and a tension sensor. The tension sensor is fixedly connected to the inner bottom surface of the mounting groove. The upper end of the elastic rope is fixedly connected to the upper inner wall of the mounting groove, and its lower end is fixedly connected to the sensing end of the tension sensor. The static mounting plate is provided with multiple docking grooves corresponding to the long rods, and the diameters of the multiple docking grooves are different.

[0008] As a further supplement to this application, the inner wall of the mounting groove is provided with a plurality of square holes evenly distributed from top to bottom, and the perforated plate is located at the outer end of the hole on the side of the square hole away from the drawer body, and the bolts movably pass through the perforated plate and are threadedly connected to the inside of the movable mounting plate.

[0009] As a further supplement to the present application, the diameter of the end column is larger than the diameter of the long rod, the length and width of the opening of the square hole are both larger than the diameter of the end column, the end column is located on the inner side of the mounting groove, and the tension spring is located on the inner side of the square hole. In the initial state, the elastic rope is in a vertically straight state and is located on the side of the end column close to the drawer body, and there is a gap between the end column and the drawer body and the elastic rope.

[0010] As a further supplement to the present application, a plurality of drawer slots evenly distributed from top to bottom are provided at the front end of the cabinet, the drawer body is slidably connected to the inside of the drawer slots, a pair of main slides are provided on the inner bottom surface of the drawer slots, and a pair of racks are fixedly connected to the lower end of the drawer body, and the pair of racks are respectively slidably connected to the inside of the pair of main slides.

[0011] As a further supplement to the present application, the drive assembly includes a motor fixedly connected to the inside of the cabinet, the output end of the motor is fixedly connected to a rotating shaft, the outer end of the rotating shaft is fixedly connected to a pair of gears, the pair of gears are respectively meshed with a pair of racks, and the drive assembly is arranged at an opening position near the drawer slot.

[0012] As a further supplement to the present application, a receiving groove is provided on the inner bottom surface of the main slide, the rotating shaft is rotatably connected to the interior of the cabinet and passes through the inner side of the receiving groove, and the gear is located inside the receiving groove.

[0013] As a further supplement to the present application, a pair of auxiliary slide grooves are provided on the inner bottom surface of the drawer slot, and a pair of guide rods are fixedly connected to the lower end of the drawer body, and the pair of guide rods are respectively slidably connected to the inside of the pair of auxiliary slide grooves.

[0014] As a further supplement to the present application, a square cavity communicating with the drawer slot is provided inside the cabinet, and one end of the static mounting plate away from the dynamic mounting plate is fixedly connected to the inner wall of the square cavity. An image acquisition component is provided on a pair of side walls of the square cavity, and a control terminal is installed on the cabinet. The image acquisition component, the drive component and the tension sensor are all electrically connected to the control terminal.

[0015] As a further supplement to this application, the image acquisition component includes an electric guide rail fixedly connected to the inner wall of the square cavity, the outer end of the electric guide rail is slidably connected to a slide seat, the outer end of the slide seat is fixedly connected to a camera, and the inner wall of the mounting groove is fixedly connected to multiple lighting lamps.

[0016] A long-life low-voltage complete switchgear, the use method of which comprises the following steps: S1. When a drawer needs to be opened, the drive assembly is activated through the control terminal, causing it to rotate forward at a set speed V, driving the drawer to slowly move out. The drive assembly runs for a set time T before closing. The drawn drawer is recorded as drawer A. S2. When drawer A needs to be closed, the drive assembly is started again to reverse at a set speed V, so that drawer A is slowly moved back. During this process, the monitoring data of the tension sensor is obtained in real time; S2.1. When the monitoring data of the tension sensor shows no significant change, the drive assembly stops after the set time T. At this time, the moving contact and the static contact are normally aligned and conductive; S2.2. When the monitoring data of the tension sensor changes significantly, indicating that drawer A may have shifted, the control terminal automatically shuts down the drive component, causing drawer A to pause and remain in its current position. The control terminal also activates the image acquisition component to capture images of the status of the feedback component on drawer A. Simultaneously, it issues an abnormal closure warning to the operator. The operator compares and analyzes the collected images and, combined with the monitoring data from the tension sensor, further determines whether drawer A has positional displacement and the extent of the displacement.

[0017] To sum up, the present application sets a feedback component on the dynamic mounting plate and sets a plurality of corresponding docking grooves with different diameters on the static mounting plate. During the closing process of the drawer body, the feedback component can monitor and feedback its position accuracy in real time. When the position of the drawer body is offset, the movement of the drawer body can be stopped immediately and an early warning can be issued, so that the dynamic contact and the static contact are less likely to be docked and misaligned, thereby reducing damage to both and improving the service life of the present application. At the same time, by comparing the actual monitoring data of the feedback component with the initial data, the degree of position offset of the drawer body can be effectively judged. In addition, through the setting of the image acquisition component, the state of the feedback component is imaged, and the position of each long rod is obtained, so as to further intuitively and accurately judge the degree of position offset of the drawer body, and provide more effective data support for subsequent inspections of the drawer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an overall three-dimensional diagram of the first and second embodiments of the present application; Figure 2 This is a three-dimensional diagram of the drawer body of the first and second embodiments of the present application; Figure 3 Partial stereograms of the first and second embodiments of the present application; Figure 4 3D views of the drawer bodies of the first and second embodiments of the present application; Figure 5 Partial exploded views of the first and second embodiments of the present application; Figure 6 A perspective view of the dynamic mounting plate according to the first and second embodiments of the present application; Figure 7 3D views of the feedback components of the first and second embodiments of the present application when partially disassembled; Figure 8 The three-dimensional structure of the movable mounting plate and the static mounting plate when docking in the first and second embodiments of the present application Figure 1 ; Figure 9 The three-dimensional structure of the movable mounting plate and the static mounting plate when docking in the first and second embodiments of the present application Figure 2 ; Figure 10 The three-dimensional structure of the movable mounting plate and the static mounting plate when docking in the first and second embodiments of the present application Figure 3 ; Figure 11 This is a schematic diagram of the partial top surface structure of the dynamic mounting plate and the static mounting plate when they are docked in the first and second embodiments of the present application.

[0019] Description of the numbers in the figure: 1. Cabinet body; 101. Drawer slot; 102. Main slide; 103. Auxiliary slide; 104. Square cavity; 2. Drawer body; 201. Rack; 202. Guide rod; 3. Drive assembly; 31. Motor; 32. Rotating shaft; 33. Gear; 4. Dynamic mounting plate; 401. Dynamic contact; 402. Mounting slot; 403. Square hole; 5. Static mounting plate; 501. Static contact; 502. Docking slot; 6. Electric guide rail; 7. Slide; 8. Camera; 9. Feedback assembly; 91. End column; 92. Long rod; 93. Tension spring; 94. Perforated plate; 95. Bolt; 96. Elastic rope; 97. Tension sensor; 10. Lighting lamp. DETAILED DESCRIPTION

[0020] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0021] The first implementation method: The present invention provides a low voltage switch cabinet with long service life. Figure 1 and Figure 2 , including a cabinet body 1, a plurality of drawer bodies 2 are slidably connected to the interior of the cabinet body 1, a movable mounting plate 4 is fixedly connected to the rear end of the drawer body 2, and a plurality of static mounting plates 5 corresponding to the movable mounting plates 4 are provided inside the cabinet body 1, combined with Figure 3 and Figure 6 As shown, the ends of the movable mounting plate 4 and the static mounting plate 5 that are close to each other are respectively fixedly connected with a movable contact 401 and a static contact 501. This switch cabinet adopts the drawer-type switch cabinet structure in the prior art. The electrical components of its input and output line circuits are installed in the withdrawable drawer body 2 to form an independent functional unit. When the drawer body 2 is pushed into the cabinet body 1, the movable mounting plate 4 is close to the static mounting plate 5, so that the movable contact 401 and the static contact 501 are combined to form a circuit conduction. When the drawer body 2 is pulled out from the cabinet body 1, the movable contact 401 and the static contact 501 are separated.

[0022] See also Figure 2 and Figure 4 The front end of the cabinet 1 is provided with a plurality of drawer slots 101 evenly distributed from top to bottom. The drawer body 2 is slidably connected to the inside of the drawer slots 101. The inner bottom surface of the drawer slots 101 is provided with a pair of main slides 102. The lower end of the drawer body 2 is fixedly connected to a pair of racks 201. The pair of racks 201 are respectively slidably connected to the inside of the pair of main slides 102. Figure 1 and Figure 3The lower end of the drawer body 2 is connected to a driving assembly 3, which includes a motor 31 fixedly connected to the inside of the cabinet 1, and the output end of the motor 31 is fixedly connected to a rotating shaft 32. The outer end of the rotating shaft 32 is fixedly connected to a pair of gears 33, and the pair of gears 33 are respectively engaged with a pair of racks 201. The driving assembly 3 is arranged at an opening position close to the drawer slot 101, and a receiving slot is provided on the inner bottom surface of the main slide 102. The rotating shaft 32 is rotatably connected to the inside of the cabinet 1 and passes through the inner side of the receiving slot, and the gear 33 is located inside the receiving slot.

[0023] In the present application, the entry and exit of the drawer body 2 is controlled by the driving assembly 3. When the starting motor 31 drives the rotating shaft 32 to rotate in the forward direction, the drawer body 2 is moved outward along the drawer slot 101 through the transmission cooperation of the gear 33 and the rack 201. When the motor 31 rotates in the reverse direction, the drawer body 2 can be moved back to the inside of the drawer slot 101. The motor 31 can adopt a brushless motor and run smoothly at a low speed. In addition, a reducer can be added between the motor 31 and the rotating shaft 32 to further reduce the entry and exit speed of the drawer body 2, improve its entry and exit stability, and reduce damage when the moving contact 401 and the static contact 501 are docked.

[0024] Supplementary explanation: Since there are generally more openings at the lower end of the drawer body 2 for cable installation and heat dissipation, in this application, the openings on the drawer body 2 are staggered with the rack 201, making it difficult for the openings to connect with the main slide 102, and it is not easy to affect the sealing of the switch cabinet when in use.

[0025] A pair of auxiliary slide grooves 103 are also provided on the inner bottom surface of the drawer slot 101, and a pair of guide rods 202 are fixedly connected to the lower end of the drawer body 2. The pair of guide rods 202 are respectively slidably connected to the inside of the pair of auxiliary slide grooves 103. Through the cooperation of the guide rods 202 and the auxiliary slide grooves 103, the stability of the drawer body 2 during movement is further improved.

[0026] See also Figure 4 、 Figure 5 and Figure 6 , a pair of feedback components 9 are also provided on the dynamic mounting plate 4, and the feedback components 9 are respectively located on the left and right sides of the dynamic contact 401. A pair of mounting grooves 402 for mounting the feedback component 9 are opened at one end of the dynamic mounting plate 4 close to the drawer body 2. The feedback component 9 includes a plurality of end columns 91. The end of the end column 91 away from the drawer body 2 is fixedly connected to a long rod 92. The outer end of the long rod 92 is slidably sleeved with a perforated plate 94. A tension spring 93 is fixedly connected between the perforated plate 94 and the end column 91, and the tension spring 93 is movably sleeved on the outer side of the long rod 92 and can be extended and retracted along the length direction of the long rod 92. The perforated plate 94 and the dynamic mounting plate 4 are threadedly connected by a pair of bolts 95. See also Figure 6 and Figure 7The feedback component 9 also includes an elastic rope 96 and a tension sensor 97. The tension sensor 97 is fixedly connected to the inner bottom surface of the mounting groove 402. The upper end of the elastic rope 96 is fixedly connected to the upper inner wall of the mounting groove 402, and its lower end is fixedly connected to the sensing end of the tension sensor 97. The static mounting plate 5 is provided with a plurality of docking grooves 502 corresponding to the long rods 92, and the diameters of the plurality of docking grooves 502 are different.

[0027] The inner wall of the mounting groove 402 is provided with a plurality of square holes 403 evenly distributed from top to bottom. The perforated plate 94 is located at the outer end of the hole of the square hole 403 away from the drawer body 2. The bolt 95 movably passes through the perforated plate 94 and is threadedly connected to the inside of the movable mounting plate 4. The diameter of the end column 91 is larger than the diameter of the long rod 92. The hole length and hole width of the square hole 403 are both larger than the diameter of the end column 91. The end column 91 is located on the inner side of the mounting groove 402, and the tension spring 93 is located on the inner side of the square hole 403. In the initial state, the elastic rope 96 is in a vertically straight state and is located on the side of the end column 91 close to the drawer body 2, and there is a gap between the end column 91 and the drawer body 2 and the elastic rope 96. The tension spring 93 is at its original length. When the end column 91 and the long rod 92 move toward the direction close to the drawer body 2, since the perforated plate 94 is in a fixed state, the end column 91 will drive the tension spring 93 to elastically stretch.

[0028] A control terminal (not shown) is installed on the cabinet 1, and the drive assembly 3 and the tension sensor 97 are electrically connected to the control terminal. The operator can control the entry and exit process of the drawer body 2 by operating the control terminal.

[0029] In actual use, the accuracy of the drawer body 2 during in-and-out movement will affect the docking accuracy of the moving contact 401 and the static contact 501. When there is an offset in the horizontal movement of the drawer body 2, it will make it difficult for the moving contact 401 and the static contact 501 to be properly plugged in, thereby affecting the conduction of the circuit and even causing damage to the moving contact 401 and the static contact 501. Although the present application realizes linear drive of the drawer body 2 through the provision of the drive assembly 3 and the guide rod 202, which has greatly improved the accuracy and smoothness compared to the manual drive method of the drawer body 2, after long-term use, there will be various factors (such as wear of the rack 201 or the gear 33, deformation of the drawer body 2 itself or the guide rod 202, etc.) that may cause the position of the drawer body 2 or the moving contact 401 to deviate. Therefore, based on the above situation, the present application provides a feedback assembly 9 for monitoring and feedback of its position accuracy when the drawer body 2 is closed (i.e., when moving into the drawer slot 101). When its position deviation is detected, the movement of the drawer body 2 can be immediately stopped and an early warning can be issued.

[0030] A long-life low-voltage complete switchgear, the use method of which comprises the following steps: S1. When a drawer body 2 needs to be opened, the drive assembly 3 is activated through the control terminal, causing it to rotate forward at a set speed V, driving the drawer body 2 to slowly move out. The drive assembly 3 closes after running for a set time T. The drawer body 2 that has been moved out is recorded as drawer A. S2. When drawer A needs to be closed, the drive assembly 3 is started again to reverse at a set speed V, so that drawer A is slowly moved back. During this process, the monitoring data of the tension sensor 97 is obtained in real time; S2.1. When the monitoring data of the tension sensor 97 shows no significant change, the drive assembly 3 stops after running for a set time T. At this time, the moving contact 401 and the static contact 501 are normally aligned and conductive; S2.2. When the monitoring data of the tension sensor 97 changes significantly, it indicates that the drawer A may be offset. At this time, the control terminal automatically closes the drive component 3, causing the drawer A to stop moving and stay at the current position. At the same time, an abnormal closing warning is issued to the operator.

[0031] The monitoring principle of step S2 is as follows: like Figure 8 As shown, under normal circumstances, that is, when the drawer body 2 is closing and the position is not shifted, as the movable mounting plate 4 and the static mounting plate 5 gradually approach each other, the multiple long rods 92 will be aligned with the respective docking grooves 502 and inserted without being obstructed. Therefore, the positions of the end column 91 and the long rod 92 can remain stable, the end column 91 does not squeeze the elastic rope 96, and the data of the tension sensor 97 does not change significantly. like Figure 9 and Figure 10 As shown, when the position of the drawer body 2 shifts to a certain extent during the closing process, the position of the corresponding long rod 92 will also shift synchronously relative to the docking groove 502 with a smaller inner diameter. At this time, the long rod 92 will be blocked by the outer surface of the static mounting plate 5, making it difficult to smoothly insert into the docking groove 502 with a smaller inner diameter. As the static mounting plate 5 continues to move, the blocked long rod 92 moves toward the inside of the mounting groove 402 relative to the dynamic mounting plate 4, gradually squeezing the elastic cord 96, causing it to bend and stretch, and significantly increasing the tension on the tension sensor 97. Therefore, in step S2.2, when the monitoring data of the tension sensor 97 changes significantly, it can be reflected that the drawer A may have a position shift. Moreover, since the diameters of the docking grooves 502 are different, the smaller the aperture of the docking grooves 502, the smaller the degree of position deviation of the long rods 92 allowed. Therefore, when the position deviation of the movable mounting plate 4 is greater, the position deviation of the long rods 92 is also greater, and the number of long rods 92 that are difficult to smoothly enter the docking grooves 502 is also greater, and the number of extrusion points on the elastic rope 96 is also more, resulting in a greater degree of formation of the elastic rope 96 and greater monitoring data of the tension sensor 97. Therefore, after closing the drive assembly 3 and the drawer body 2 stops moving, by analyzing the difference between the tension data of the tension sensor 97 and the initial data, the degree of deviation of the drawer body 2 can be judged to a certain extent.

[0032] The end of the end column 91 away from the long rod 92 is fixedly connected with multiple curved protrusions evenly distributed around the circumference. When the end column 91 squeezes the elastic rope 96, the elastic rope 96 can enter the gap between adjacent curved protrusions, thereby limiting the elastic rope 96 and making it difficult for the elastic rope 96 to slip on the end surface of the end column 91.

[0033] In step S2.2, the method of giving an abnormal closing warning to the operator may be an audible and visual warning. When the operator detects the warning, he or she may promptly conduct an on-site inspection of the deflected drawer body 2.

[0034] Second implementation method: This implementation method adds the following content based on the first implementation method: Figure 1 and Figure 3 The cabinet 1 has a square cavity 104 in communication with the drawer slot 101. The end of the static mounting plate 5 away from the dynamic mounting plate 4 is fixedly connected to the inner wall of the square cavity 104. An image acquisition component is provided on a pair of side walls of the square cavity 104. The image acquisition component includes an electric guide rail 6 fixedly connected to the inner wall of the square cavity 104. The outer end of the electric guide rail 6 is slidably connected to a slide 7. The electric guide rail 6 and the slide 7 constitute an existing matching electric slide structure. The outer end of the slide 7 is fixedly connected to a camera 8. Please refer to Figure 7 A plurality of lighting lamps 10 are fixedly connected to the inner wall of the mounting groove 402 , and the image acquisition component and the lighting lamps 10 are both electrically connected to the control terminal.

[0035] This embodiment, through the arrangement of the above structure, adds the following functions without affecting the first embodiment: Combine Figure 3 and Figure 11 As shown, in step S2.2, after the drive assembly 3 is automatically closed, the control terminal can automatically start the image acquisition assembly. By moving the slide 7 on the electric guide rail 6, the camera 8 is driven to move to the same height as the drawer A. The pair of cameras 8 are facing the position where the moving contact 401 is located to capture images of the status of the feedback assembly 9; The lighting lamp 10 automatically sends the collected image to the computer terminal connected to the control terminal. The operator can further obtain the position of each long rod 92 and the deformation of the elastic rope 96 by viewing and analyzing the image information. Compared with the first embodiment in which judgment is made simply by the data change of the tension sensor 97, although this embodiment increases the material and electricity cost of the image acquisition component, it can further judge whether there is a position offset and the degree of position offset of the drawer A, and has more accurate and intuitive judgment accuracy, which provides more effective data support for the subsequent inspection of the drawer body 2.

[0036] When the control terminal starts the image acquisition component, it also starts the lighting lamp 10 , which illuminates the area of ​​the moving contact 401 , making it easier for the camera 8 to collect clear image information.

[0037] In view of current actual needs, the protection scope of the above-mentioned implementation mode adopted in this application is not limited to this. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A high-life low-voltage complete switch cabinet, comprising a cabinet body (1), wherein a plurality of drawer bodies (2) are slidably connected to the interior of the cabinet body (1), a rear end of the drawer body (2) is fixedly connected to a movable mounting plate (4), a plurality of static mounting plates (5) corresponding one to one with the movable mounting plates (4) are provided inside the cabinet body (1), a movable contact (401) and a static contact (501) are fixedly connected to the ends of the movable mounting plates (4) and the static mounting plates (5) close to each other, respectively, and a drive assembly (3) is connected to the lower end of the drawer body (2), characterized in that: A pair of feedback components (9) are also provided on the movable mounting plate (4), and the feedback components (9) are respectively located on the left and right sides of the movable contact (401); The movable mounting plate (4) is provided with a pair of mounting grooves (402) for mounting a feedback assembly (9) at one end thereof close to the drawer body (2). The feedback assembly (9) comprises a plurality of end posts (91). An end of the end post (91) away from the drawer body (2) is fixedly connected to a long rod (92). The outer end of the long rod (92) is slidably sleeved with a perforated plate (94). A tension spring (93) is fixedly connected between the perforated plate (94) and the end post (91). The tension spring (93) is movably sleeved on the outer side of the long rod (92). The perforated plate (94) and the movable mounting plate (4) are threadedly connected via a pair of bolts (95). The feedback assembly (9) further comprises an elastic rope (96) and a tension sensor (97), wherein the tension sensor (97) is fixedly connected to the inner bottom surface of the mounting groove (402), the upper end of the elastic rope (96) is fixedly connected to the upper inner wall of the mounting groove (402), and the lower end thereof is fixedly connected to the sensing end of the tension sensor (97), and the static mounting plate (5) is provided with a plurality of docking grooves (502) corresponding one to one with the long rods (92), and the diameters of the plurality of docking grooves (502) are all different.

2. The long-life low-voltage complete switchgear cabinet according to claim 1, characterized in that: The inner side wall of the mounting groove (402) is provided with a plurality of square holes (403) evenly distributed from top to bottom. The perforated plate (94) is located at the outer end of the hole of the square hole (403) away from the drawer body (2). The bolt (95) movably passes through the perforated plate (94) and is threadedly connected to the interior of the movable mounting plate (4).

3. The long-life low-voltage complete switchgear cabinet according to claim 2, characterized in that: The diameter of the end column (91) is greater than the diameter of the long rod (92); the length and width of the opening of the square hole (403) are both greater than the diameter of the end column (91); the end column (91) is located inside the mounting groove (402); the tension spring (93) is located inside the square hole (403); in the initial state, the elastic rope (96) is in a vertically straight state and is located on a side of the end column (91) close to the drawer body (2); and there is a gap between the elastic rope (96) and both the end column (91) and the drawer body (2).

4. The long-life low-voltage complete switchgear according to claim 1, characterized in that: The front end of the cabinet body (1) is provided with a plurality of drawer slots (101) evenly distributed from top to bottom, the drawer body (2) is slidably connected to the inside of the drawer slots (101), the inner bottom surface of the drawer slots (101) is provided with a pair of main sliding slots (102), the lower end of the drawer body (2) is fixedly connected to a pair of racks (201), and the pair of racks (201) are respectively slidably connected to the inside of the pair of main sliding slots (102).

5. The long-life low-voltage complete switchgear cabinet according to claim 4, characterized in that: The drive assembly (3) comprises a motor (31) fixedly connected to the interior of the cabinet (1); an output end of the motor (31) is fixedly connected to a rotating shaft (32); an outer end of the rotating shaft (32) is fixedly connected to a pair of gears (33); the pair of gears (33) are respectively meshed with a pair of racks (201); and the drive assembly (3) is arranged at an opening position close to the drawer slot (101).

6. The long-life low-voltage complete switchgear cabinet according to claim 5, characterized in that: The inner bottom surface of the main sliding groove (102) is provided with a receiving groove, the rotating shaft (32) is rotatably connected to the inside of the cabinet (1) and passes through the inner side of the receiving groove, and the gear (33) is located inside the receiving groove.

7. The long-life low-voltage complete switchgear cabinet according to claim 4, characterized in that: The inner bottom surface of the drawer slot (101) is further provided with a pair of auxiliary slide grooves (103), and the lower end of the drawer body (2) is further fixedly connected with a pair of guide rods (202), and the pair of guide rods (202) are respectively slidably connected to the inside of the pair of auxiliary slide grooves (103).

8. The long-life low-voltage complete switchgear cabinet according to claim 4, characterized in that: A square cavity (104) communicating with the drawer slot (101) is provided inside the cabinet (1); one end of the static mounting plate (5) away from the dynamic mounting plate (4) is fixedly connected to the inner wall of the square cavity (104); a pair of side walls of the square cavity (104) are provided with image acquisition components; a control terminal is installed on the cabinet (1); and the image acquisition component, the drive component (3) and the tension sensor (97) are all electrically connected to the control terminal.

9. The long-life low-voltage complete switchgear cabinet according to claim 8, characterized in that: The image acquisition assembly comprises an electric guide rail (6) fixedly connected to the inner wall of the square cavity (104); the outer end of the electric guide rail (6) is slidably connected to a slide seat (7); the outer end of the slide seat (7) is fixedly connected to a camera (8); and the inner wall of the mounting groove (402) is fixedly connected to a plurality of lighting lamps (10).

10. The long-life low-voltage complete switchgear cabinet according to claim 8, characterized in that: The method of use includes the following steps: S1. When a certain drawer body (2) needs to be opened, the drive component (3) is started through the control terminal, so that it rotates forward at a set speed V, driving the drawer body (2) to slowly move out. The drive component (3) is closed after running for a set time T, and the drawer body (2) that has been moved out is recorded as drawer A; S2, when it is necessary to close the drawer A, the driving component (3) is started again to reverse at a set speed V, so that the drawer A is slowly moved back, and during this process, the monitoring data of the tension sensor (97) is obtained in real time; S2.

1. When the monitoring data of the tension sensor (97) has no significant change, the drive assembly (3) stops after running for a set time T, and the moving contact (401) and the static contact (501) are normally aligned and conductive; S2.

2. When the monitoring data of the tension sensor (97) changes significantly, it indicates that there is a possibility of position displacement of drawer A. At this time, the control terminal automatically closes the drive component (3), causing drawer A to stop moving and stay at the current position, and starts the image acquisition component to capture the state of the feedback component (9) on drawer A. At the same time, an abnormal closing warning is issued to the operator; The operator compares and analyzes the collected images, and then combines the monitoring data of the tension sensor (97) to further determine whether drawer A has positional deviation and the degree of positional deviation.

Images