CN111817196A

CN111817196A - Switch cabinet

Info

Publication number: CN111817196A
Application number: CN202010595344.7A
Authority: CN
Inventors: 张旋
Original assignee: Hefei Volt Ampere Technology Co ltd
Current assignee: Shandong zhangchi Electric Technology Co.,Ltd.
Priority date: 2020-06-27
Filing date: 2020-06-27
Publication date: 2020-10-23
Anticipated expiration: 2040-06-27
Also published as: CN111817196B

Abstract

The invention relates to the technical field of power switch cabinets, and particularly discloses a switch cabinet, which comprises a cabinet body, wherein a rear bottom plate is arranged in the cabinet body, and a drawer is arranged on one side of the rear bottom plate; an electric push rod is arranged on the rear bottom plate; the drawer comprises a rear side plate, a first elastic piece which can slide is arranged in the rear side plate, and a second arc-shaped groove which can extend into the first arc-shaped groove is arranged at the lower end part of the first elastic piece; the end face of the rear bottom plate, close to the drawer, is connected with a baffle plate which is perpendicular to the rear bottom plate, and the end part of the first elastic piece, extending out of the rear side plate, is provided with an inclined plane; a guide rail body fixedly connected with the drawer is arranged below the drawer, the guide rail body comprises a connecting part and an installation part, a sliding groove is arranged on the installation part, and a second sliding block is arranged in the sliding groove; a first gear is arranged in the connecting part, and a second rack matched with the first gear is arranged at the bottom end of the second sliding block. The invention better improves the stability and the safety of the switch cabinet body in use.

Description

Switch cabinet

Technical Field

The invention relates to the technical field of power switch cabinets, in particular to a switch cabinet.

Background

The switch cabinet is an electric device, the external line of the switch cabinet firstly enters a main control switch in the cabinet and then enters a branch control switch, and each branch circuit is arranged according to the requirement. Such as meters, automatic controls, magnetic switches of motors, various alternating current contactors, and the like, some of which are also provided with high-voltage chambers and low-voltage chamber switch cabinets, and high-voltage buses, such as power plants, and some of which are also provided with low-frequency load shedding for keeping main equipment. The main function of the switch gear is to open, close, control and protect the electric equipment in the process of generating, transmitting, distributing and converting electric energy of the power system. The components in the switch cabinet mainly comprise a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like. The classification methods of the switch cabinets are various, for example, the switch cabinets can be divided into movable switch cabinets and fixed switch cabinets by the installation mode of the circuit breaker; or according to different cabinet body structures, the cabinet body can be divided into an open type switch cabinet, a metal closed switch cabinet and a metal closed armored switch cabinet; the high-voltage switch cabinet, the medium-voltage switch cabinet, the low-voltage switch cabinet and the like can be divided according to different voltage grades. The method is mainly suitable for various occasions such as power plants, transformer substations, petrochemical industry, metallurgical steel rolling, light industrial textile, industrial and mining enterprises, residential districts, high-rise buildings and the like.

At present most cubical switchboard that has a drawer sets up the gyro wheel at the both ends of drawer usually, and the cooperation through the spout in gyro wheel and the cabinet body is convenient to the pulling of drawer, but because the drawer of drawer type cubical switchboard carries out circuit connection through the form that plug and socket are connected between drawer and the back bottom plate, the skew easily appears in the position of drawer when setting up the gyro wheel at the both ends of drawer and can make drawer and back bottom plate be connected for be connected and break off between the unable comparatively stable and back bottom plate of drawer.

Disclosure of Invention

The invention provides a switch cabinet, aiming at the defect of poor stability when a drawer and a rear bottom plate are connected and disconnected in the prior art. It can realize comparatively stable realization cubical switchboard drawer and back bottom plate and be connected with the function of disconnection.

In order to solve the technical problem, the invention is solved by the following technical scheme:

a switch cabinet comprises a cabinet body, wherein a rear bottom plate fixedly connected with the cabinet body is arranged in the cabinet body, and a drawer positioned in the cabinet body is arranged on one side of the rear bottom plate; an electric push rod is arranged on the end face, far away from the drawer, of the rear bottom plate, and a piston rod of the electric push rod penetrates through the rear bottom plate and can move towards the drawer end; the drawer comprises a rear side plate close to the rear bottom plate, a rear side plate through hole in clearance fit with the end part of the electric push rod piston rod is arranged on the rear side plate, a first elastic piece installation cavity which is positioned above the rear side plate through hole and communicated with the rear side plate through hole is arranged on the rear side plate, a first arc-shaped groove is arranged at the end part of the electric push rod piston rod, a first elastic piece capable of sliding is arranged in the first elastic piece installation cavity, and a second arc-shaped groove capable of extending into the first arc-shaped groove is arranged at the lower end part of the first elastic piece; the end face, close to the drawer, of the rear bottom plate is connected with a baffle plate perpendicular to the rear bottom plate, the upper end of the first elastic piece extends out of the rear side plate, the end, extending out of the rear side plate, of the first elastic piece is provided with an inclined face used for being matched with the baffle plate to enable the second arc-shaped groove to be abutted into the first arc-shaped groove, and the inclined face extends from the end face, close to the rear bottom plate, of the first elastic piece to the end face, far away from the rear bottom plate, of the first elastic piece; a first spring for pushing the upper end part of the first elastic piece out of the first elastic piece mounting cavity is arranged in the first elastic piece mounting cavity;

a guide rail body fixedly connected with the drawer is arranged below the drawer, and the longitudinal section of the guide rail body is L-shaped; the guide rail body comprises a connecting part used for being connected with the switch cabinet body, the upper end part of the connecting part is provided with an installation part which is perpendicular to the connecting part, and the lower end surface of the drawer is fixedly connected with the upper end surface of the installation part; the mounting part is provided with a sliding chute, and a second sliding block which is matched with the sliding chute and has the same length with the sliding chute is arranged in the sliding chute; one end of the connecting part is provided with a first gear mounting cavity, and a first gear which can rotate along the sliding direction of the sliding chute is arranged in the first gear mounting cavity; the bottom surface of installation department communicates with each other with first gear installation cavity, and the bottom of second slider is equipped with the second rack with first gear matched with.

According to the drawer, the electric push rod, the first elastic piece and the baffle are arranged, so that the electric push rod is driven to realize connection and disconnection between the circuit contact on the drawer and the circuit connector on the rear bottom plate in daily use, compared with a manual pushing or pulling mode, the connection and disconnection of the circuit between the drawer and the rear bottom plate are conveniently and easily realized, and the stability of the circuit connection and disconnection between the drawer and the rear bottom plate is improved; simultaneously with the circuit connection back between drawer and the back bottom plate, the cooperation between the piston rod on first elastic component and the electric putter has realized the locking to the drawer for even lawless persons opens the lock on the cabinet door, because the cooperation between the piston rod on first elastic component and the electric putter, lawless persons also can't pull out the drawer from the cabinet body, thereby the theftproof ability of the cabinet body has been promoted to the preferred. Through the setting of guide rail body, first gear and second rack, can be through the cooperation of the second slider among the rail device with the spout and the cooperation of first gear and second rack for the removal of drawer is more stable when pulling out the cubical switchboard with the drawer or pushing the drawer into the cubical switchboard, compares in the mode that sets up the gyro wheel at the drawer both ends, the reduction of preferred is rocking of drawer when removing the drawer, makes the drawer more stable when using.

Preferably, the side walls at two ends in the first elastic piece mounting cavity are expanded outwards to form an ear sliding cavity, the first elastic piece is provided with an ear part which is positioned in the ear sliding cavity and is in clearance fit with the ear sliding cavity, the first spring is arranged in the ear sliding cavity, and the upper end part of the first spring is abutted against the ear part; the opening part of the upper end of the first elastic piece mounting cavity outwards expands to form a sealing plate mounting groove, and a bolt is connected with a sealing plate used for limiting the ear in the sealing plate mounting groove.

According to the invention, the arrangement of the ear sliding cavity, the ear, the sealing plate mounting groove and the sealing plate can conveniently realize the mounting of the first spring and the mounting of the first elastic piece.

Preferably, the inclined surface extends from the end surface of the first elastic member near the rear base plate to the center of the first elastic member, and the length of the first arc-shaped groove in the horizontal direction is greater than twice the thickness of the first elastic member in the horizontal direction.

According to the invention, through the arrangement of the shape of the inclined plane and the arrangement of the length of the first arc-shaped groove, the connection between the first elastic part and the electric push rod piston rod is conveniently realized, and the stability of the connection between the first elastic part and the electric push rod piston rod is improved.

Preferably, the end part, close to the first arc-shaped groove, of the electric push rod piston rod is provided with a connecting rod, the electric push rod penetrates through the center of the connecting rod and is in interference fit with the connecting rod, the connecting rod is perpendicular to the baffle and is provided with a first strip-shaped through hole, the end part of the connecting rod penetrates through the first strip-shaped through hole, the two ends, located on the connecting rod, of the electric push rod piston rod are provided with at least one mounting column, the end face of each mounting column is flush with the end face of the electric push rod, and the mounting columns are provided with third arc-.

According to the invention, through the arrangement of the connecting rod, the mounting column and the third arc-shaped groove on the electric push rod, the circuit connection between at least 3 drawers and the sealing plate can be realized by driving a single electric push rod, so that the production and manufacturing cost is reduced, and the daily use of a user is facilitated. The cooperation of first bar through-hole and connecting rod not only makes the removal of connecting rod in the cabinet body more stable, has still avoided electric putter's piston rod to stretch out the overlength and lead to the user unable and first arc recess and the looks joint of third arc recess when promoting the drawer to the cabinet body.

Preferably, the two ends of the connecting rod, which are positioned on the piston rod of the electric push rod, are provided with second strip-shaped through holes, and the end surface of the mounting column, which is close to the connecting rod, is provided with a first screw hole.

According to the drawer type switch cabinet, the second strip-shaped through hole and the first screw hole are arranged, so that the mounting column can be accurately inserted into the through hole of the rear side plate on the drawer, and the stability of the drawer type switch cabinet in use is improved.

Preferably, a plurality of support columns arranged along the circumferential direction of the first gear are arranged on two end faces of the first gear, a second elastic piece installation cavity communicated with the first gear installation cavity is arranged at the lower end part of the first gear installation cavity in the installation part, and the section of the second elastic piece installation cavity is square; the second elastic piece installation cavity is internally provided with a second elastic piece which can slide and is in clearance fit with the second elastic piece installation cavity, the upper end of the second elastic piece is provided with two limiting blocks which are inserted between the two supporting columns to limit the first gear, the second elastic piece installation cavity is internally provided with a second spring positioned below the second elastic piece, and the upper end part of the second spring is abutted against the second elastic piece; the center department of keeping away from the inboard terminal surface bottom of guide rail body on the second elastic component is equipped with the driving lever mounting groove, is equipped with slidable driving lever in the driving lever mounting groove, is equipped with on the terminal surface of installation department to be used for with driving lever matched with L type through-hole, the L type through-hole is stretched out to the tip of driving lever.

According to the drawer fixing device, the supporting columns, the second elastic pieces, the second springs, the shifting rods and the L-shaped through holes are arranged, so that the drawer is conveniently fixed; the user can overhaul the electrical elements in the drawer without completely drawing the drawer out of the switch cabinet, so that the electrical elements in the drawer in the switch cabinet can be overhauled conveniently; meanwhile, the situation that the second rack and the first gear are matched with each other and are loosened due to frequent taking out of the drawer is avoided.

Preferably, a second screw hole with a vertically downward opening is formed in the second elastic part, a threaded column matched with the second screw hole is arranged in the second screw hole, the upper end of the second spring abuts against the threaded column, a plurality of clamping grooves formed in the threaded column in the height direction of the threaded column are formed in the threaded column, the lower end of the second elastic part installation cavity is expanded outwards to form a gear ring sliding cavity, a rotatable gear ring in clearance fit with the gear ring sliding cavity is connected to the bottom end of the second elastic part, and a gear ring bump in clearance fit with the clamping grooves is arranged in the gear ring; a second gear installation cavity is formed in the connecting part and located on one side of the second elastic piece installation cavity, and a second gear matched with the gear ring is arranged in the second gear installation cavity; the upper end portion of the second gear is meshed with the ring gear.

According to the invention, through the arrangement of the second screw hole, the threaded column, the clamping groove, the gear ring and the second gear, the problem that the deflector rod is difficult to shift due to overlarge compression amount of the second spring is avoided, and the problem that a limiting block on the second elastic part cannot be tightly abutted between supporting columns on the first gear due to the overlong compression amount of the second spring is also avoided, so that the stability of the guide rail device in use is better improved; meanwhile, the second gear is arranged on the connecting part, so that the compression amount of the second spring can be conveniently adjusted.

Preferably, the lower end of the second elastic part is provided with threads arranged along the circumferential direction of the threaded column, the second elastic part is provided with a threaded connecting seat matched with the threads, the threaded connecting seat is provided with a threaded connecting seat through hole in clearance fit with the threaded column, a flange mounting cavity is formed between the threaded connecting seat and the second elastic part, a rotatable flange is arranged in the flange mounting cavity, the lower end part of the flange extends out of the threaded connecting seat through hole, and the end part of the flange extending out of the threaded connecting seat through hole is fixedly connected with the gear ring.

According to the invention, the gear ring can be conveniently installed by arranging the threads, the thread connecting seat and the flange.

Preferably, a spring installation groove with a vertically downward opening is formed in the threaded column, and the end of the second spring abuts against the spring installation groove.

According to the invention, through the arrangement of the second spring mounting groove, the position of the second spring in the second elastic piece mounting cavity can be prevented from deviating, so that the stability of the guide rail device in use is better improved.

Preferably, the length of the second elastic piece installation cavity in the vertical direction is greater than the length of the L-shaped through hole in the vertical direction.

According to the guide rail device, the length of the two elastic piece mounting cavities and the length of the L-shaped through hole are arranged, so that the second elastic piece is prevented from shaking in the gear ring sliding cavity due to the fact that the second elastic piece completely moves into the gear ring sliding cavity when the deflector rod is stirred, and the stability of the guide rail device in use is improved better.

Drawings

Fig. 1 is a schematic structural view of a drawer and a rear chassis in embodiment 1.

Fig. 2 is a sectional view of the rear side plate of fig. 1.

Fig. 3 is an enlarged view of a portion a in fig. 2.

FIG. 4 is a cross-sectional view of the drawer and rear chassis of FIG. 1.

Fig. 5 is an enlarged view of a portion B in fig. 4.

Fig. 6 is a schematic structural view of the connecting rod in embodiment 1.

Fig. 7 is a schematic structural view of the mounting post of fig. 6.

Fig. 8 is a cross-sectional view of the baffle of fig. 1.

Fig. 9 is a schematic structural view of the first elastic member in fig. 3.

Fig. 10 is a schematic structural view of a rail body in embodiment 2.

Fig. 11 is an enlarged view of a portion a in fig. 10.

Fig. 12 is a schematic structural view of the second slider in fig. 10.

Fig. 13 is a cross-sectional view of the rail body of fig. 10.

Fig. 14 is a schematic structural view of the second elastic member in fig. 13.

Fig. 15 is an enlarged view of a portion B in fig. 13.

Fig. 16 is an enlarged view of a portion C in fig. 15.

Fig. 17 is a schematic structural view of the first gear in fig. 11.

Fig. 18 is a schematic structural view of the threaded post of fig. 15.

Fig. 19 is a schematic structural view of the rotating base in fig. 13.

Fig. 20 is a schematic view of the structure of the flange of fig. 16.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

As shown in fig. 1 to 9, the present embodiment provides a drawer type switch cabinet, which includes a cabinet body, a rear bottom plate 611 fixedly connected to the cabinet body is disposed in the cabinet body, and a drawer 612 located in the cabinet body is disposed on one side of the rear bottom plate 611; an electric push rod 613 is arranged on the end surface of the rear bottom plate 611 far away from the drawer 612, and a piston rod of the electric push rod 613 passes through the rear bottom plate 611 and can move towards the drawer end; the drawer 612 comprises a rear side plate 612a close to the rear bottom plate 611, a rear side plate through hole 621 in clearance fit with the end of the piston rod of the electric push rod 613 is arranged on the rear side plate 612a, a first elastic piece installation cavity 631 located above the rear side plate through hole 621 and communicated with the rear side plate through hole 621 is arranged on the rear side plate 612a, a first arc-shaped groove 632 is arranged at the end of the piston rod of the electric push rod 613, a first elastic piece 633 capable of sliding is arranged in the first elastic piece installation cavity 631, and a second arc-shaped groove 633a capable of extending into the first arc-shaped groove 632 is arranged at the lower end of the first elastic piece 633; the end face of the rear bottom plate 611 close to the drawer 612 is connected with a baffle 614 perpendicular to the rear bottom plate 611, the upper end of the first elastic element 633 extends out of the rear side plate 612a, the end of the first elastic element 633 extending out of the rear side plate 612a is provided with an inclined face 651 used for matching with the baffle 614 to enable the second arc-shaped groove 633a to be pushed into the first arc-shaped groove 632, and the inclined face 651 extends from the end face of the first elastic element 633 close to the rear bottom plate 611 to the end face of the first elastic element 633 far away from the rear bottom plate 611; the first elastic member mounting chamber 631 is provided therein with a first spring 634 for urging the upper end of the first elastic member 633 out of the first elastic member mounting chamber 631.

Through the arrangement of the electric push rod 613, the first elastic member 633 and the baffle 614 in the present embodiment, before the drawer 612 is pushed into the cabinet, the electric push rod 613 is driven to move the piston rod on the electric push rod 613 to a proper position, and then the drawer 612 is pushed to move the bottom end of the inclined surface 651 to the bottom surface of the baffle 614, at this time, the first elastic member 633 is located right above the first arc-shaped groove 632, the electric push rod 613 is driven towards the direction of the back bottom plate 611 and the drawer 612 is simultaneously pushed towards the direction of the back bottom plate 611, and due to the cooperation of the inclined surface 651 and the baffle 614, the first elastic member 633 will gradually move downwards until the second arc-shaped groove 633a on the first elastic member 633 is clamped into the first arc-shaped groove 632; at this time, the drawer 612 is released, and the electric push rod 613 is continuously driven to move the piston rod towards the rear bottom plate 611, so that the drawer 612 will move towards the end of the rear bottom plate 611 under the pulling of the first elastic member 633 due to the cooperation of the second arc-shaped groove 633a and the first arc-shaped groove 632, and thus the circuit contacts on the drawer 612 are connected with the circuit connectors on the rear bottom plate 611. When the drawer 612 needs to be pulled out of the cabinet, the electric push rod 613 can be driven to move the end of the piston rod away from the end of the rear bottom plate 611, and when the first elastic member 633 is pushed to one side of the baffle plate 614, due to the action of the first spring 634, the first elastic member 634 will move upwards to eject the second arc-shaped groove 633a from the first arc-shaped groove 632, at this time, the drawer 612 can be pulled manually to pull out the drawer 612 from the cabinet. In this embodiment, through the arrangement of the electric push rod 613, the first elastic member 633 and the baffle 614, when in daily use, the electric push rod 613 can be driven to realize connection and disconnection between the circuit contact on the drawer 612 and the circuit connector on the rear bottom plate 611, and compared with a manual pushing or pulling manner, the electric push rod not only conveniently and easily realizes connection and disconnection of the circuit between the drawer 612 and the rear bottom plate 611, but also improves the stability of connection and disconnection of the circuit between the drawer 612 and the rear bottom plate 611; meanwhile, after the drawer 612 is electrically connected with the rear bottom plate 611, the drawer 612 is locked by the cooperation between the first elastic element 633 and the piston rod of the electric push rod 613, so that a user does not need to set a related locking mechanism to lock the drawer 612, the structure of the cabinet is preferably simplified, and the cost for producing and manufacturing the cabinet is reduced.

In this embodiment, the side walls at the two ends in the first elastic member installation cavity 631 expand outward to form an ear sliding cavity 635, an ear 636 located in the ear sliding cavity 635 and in clearance fit with the ear sliding cavity 635 is disposed on the first elastic member 633, the first spring 634 is disposed in the ear sliding cavity 635, and the upper end of the first spring 634 abuts against the ear 636; an opening of an upper end portion of the first elastic member mounting cavity 631 is outwardly expanded to form a sealing plate mounting groove 637, and a sealing plate 638 for limiting the ear 636 is bolted to the sealing plate mounting groove 637.

With the arrangement of the ear sliding cavity 635, the ear 636, the sealing plate mounting groove 637 and the sealing plate 638 in this embodiment, when the first elastic member 633 is mounted, the first spring 634 can be placed in the ear sliding cavity 635, then the first elastic member 633 can be placed in the first elastic member mounting cavity 631, and finally the sealing plate 638 can be mounted in the sealing plate mounting groove 637, thereby achieving the mounting of the first elastic member 633. In this embodiment, the installation of the first spring 634 and the installation of the first elastic member 633 are conveniently achieved by the arrangement of the ear sliding cavity 635, the ear 636, the sealing plate installation groove 637 and the sealing plate 638.

In this embodiment, the inclined surface 651 extends from the end surface of the first elastic member 633 close to the rear base plate 611 to the center of the first elastic member 633, and the length of the first arc-shaped groove 632 in the horizontal direction is greater than twice the thickness of the first elastic member 633 in the horizontal direction.

Through the shape of the inclined surface 651 and the length of the first arc-shaped groove 632 in this embodiment, before the drawer 612 is pushed into the cabinet, the electric push rod 613 is driven to make the center of the first arc-shaped groove 632 on the piston rod flush with the end surface of the baffle 614, and then the drawer 612 is pushed to move towards the rear bottom plate 611, when the inclined surface 651 contacts with the end surface of the baffle 614, the first elastic member 633 will gradually move downwards under the cooperation of the inclined surface 651 and the baffle 614, and the drawer 612 is continuously pushed until the end surface of the first elastic member 633 abuts against the end surface of the first arc-shaped groove 632, because the upper end of the first elastic member 633 has a plane beside the inclined surface 651, the first elastic member 633 will not move, and at this time, the electric push rod 613 is driven to move the drawer 612 towards the rear bottom plate 611 under the driving of the piston rod of the electric push rod 613. When the drawer 612 is taken out, the electric push rod 613 is driven to move the center of the first arc-shaped groove 632 to be flush with the end surface of the baffle 614, and then the drawer 612 is pulled, the first elastic member 633 will be pulled from the rear end to the front end of the first arc-shaped groove 632, and under the action of the first spring 634, the first elastic member 633 will rise, and at this time, the drawer 612 can be pulled to draw the drawer 612 out of the cabinet. In this embodiment, through the shape of the inclined surface 651 and the length of the first arc-shaped groove 632, when the drawer 612 is pushed into the cabinet, a user can push the first elastic member 633 to the bottom end of the baffle 614 and then drive the electric push rod 613 to pull the drawer 612 into the cabinet, without pushing the drawer 612 to make the first elastic member 633 be clamped into the first arc-shaped groove 632 when driving the electric push rod 613, so that the connection between the first elastic member 633 and the piston rod of the electric push rod 613 is conveniently realized, and the stability of the connection between the first elastic member 633 and the piston rod of the electric push rod 613 is improved.

In this embodiment, a connecting rod 661 is disposed at an end of the piston rod of the electric push rod 613 near the first arc groove 632, the electric push rod 613 passes through the center of the connecting rod 661 and is in interference fit with the connecting rod 661, the connecting rod 661 is disposed perpendicular to the baffle 614, the baffle 614 is provided with a first strip-shaped through hole 614a, an end of the connecting rod 661 passes through the first strip-shaped through hole 614a, at least one mounting post 662 is disposed at two ends of the piston rod of the electric push rod 613 on the connecting rod 661, an end surface of the mounting post 662 is flush with an end surface of the electric push rod 613, and a third arc groove 662a matched with the first elastic member 633 is disposed.

Through the arrangement of the connecting rod 661, the mounting post 662 and the third arc-shaped groove 662a on the electric push rod 613 in the embodiment, a user can only arrange the corresponding drawer 612 and the baffle 614 at the upper and lower ends of the electric push rod 613 in the cabinet body, and then can realize the circuit connection between at least 3 drawers 612 and the sealing plate 614 by driving a single electric push rod 613; compared with the mode of controlling the movement of a single drawer 612 through a single electric push rod 613, the number of the electric push rods 613 is reduced, the production and manufacturing cost is reduced, a user can simultaneously control a plurality of drawers 612, and the daily use of the user is facilitated. The cooperation of the first strip-shaped through hole 614a and the connecting rod 661 not only makes the movement of the connecting rod 661 in the cabinet body more stable, but also limits the extension length of the piston rod of the electric pushing rod 613, thereby preventing the piston rod of the electric pushing rod 613 from extending too long to cause the second arc-shaped groove 633a to be unable to be clamped with the first arc-shaped groove 632 and the third arc-shaped groove 662a when the drawer 612 is pushed into the cabinet body by a user.

In this embodiment, the connecting rod 661 is provided with second strip-shaped through holes 663 at two ends of the piston rod of the electric push rod 613, and the mounting post 662 is provided with first screw holes 671 at an end surface close to the connecting rod 661.

Through the arrangement of the second strip-shaped through hole 663 and the first screw hole 671 in the embodiment, when the mounting column 662 is mounted, the position of the mounting column 662 can be adjusted according to the height of the drawer 612, and then the mounting column 662 is mounted on the connecting rod 661 through the matching of the bolt and the first screw hole 671, so that the mounting column 662 can be accurately inserted into the rear side plate through hole 621 on the drawer 612, and the stability of the drawer type switch cabinet in use is improved.

In this embodiment, the inner wall of the second bar-shaped through hole 663 is outwardly expanded to form a first rack mounting step 664, a first rack 665 is arranged on the bottom end surface of the first rack mounting step 664, the end of the mounting column 662 extends into the first rack mounting step 664, and a latch 672 matched with the first rack 665 is arranged on the end surface, close to the first rack mounting step 664, of the mounting column 662.

Through the arrangement of the first rack mounting step 664, the first rack 665 and the latch 672 in the embodiment, when the mounting column 662 is mounted, the mounting column 662 can be stably mounted on the connecting rod 661 through the cooperation of the first rack 665 and the latch 672, so that the mounting column 662 is prevented from sliding on the connecting rod 661 when the drawer type switch cabinet is used, and the stability of the drawer type switch cabinet in use is improved preferably.

In this embodiment, the end surfaces of the two sides of the connecting rod 661 are provided with first sliding grooves 666 arranged along the height direction of the connecting rod 661, the first sliding grooves 666 are provided with a plurality of first sliding blocks 667 therein, the end portions of the first sliding blocks 667 extend out of the first sliding grooves 666, and the two ends of the baffle 614 inside the first bar-shaped through hole 614a are provided with second sliding grooves 681 in clearance fit with the first sliding blocks 667.

Through the arrangement of the first sliding groove 666, the first sliding block 667 and the second sliding groove 681 in the embodiment, when the connecting rod 661 is installed, the first sliding block 667 on the connecting rod 661 is pushed into the second sliding groove 681 on the baffle 614, and then the baffle 614 is installed on the rear bottom plate 611, so that the situation that the connecting rod 661 shakes when moving is avoided, and the stability of the drawer type switch cabinet in use is improved.

In this embodiment, the rear bottom plate 611 is provided with a third sliding groove 611a along the height direction of the rear bottom plate 611, and the baffle 614 is provided with a locking block 682 in clearance fit with the third sliding groove 611 a.

Through the third sliding slot 611a and the fixture block 682 in this embodiment, when the user mounts the baffle 614, the position of the baffle 614 on the rear bottom plate 611 can be adjusted according to the height of the rear side plate 612a, and after the position of the baffle 614 is adjusted, the baffle 614 can be fixed on the rear bottom plate 611 by using a bolt, a screw or other tools passing through the rear bottom plate 611, so that the lower end surface of the baffle 614 is in clearance fit with the upper end surface of the rear side plate 612a of the drawer 612, thereby preventing the drawer type switch cabinet from being used normally due to an excessively large or insufficient distance between the lower end surface of the baffle 614 and the upper end surface of the rear side plate 612a, and further enabling the drawer type switch cabinet to have better stability.

In this embodiment, the number of the electric push rods 613 is 2 and is uniformly arranged at two ends of the rear bottom plate 611 far away from the end surface of the drawer 612.

By setting the number of the electric push rods 613 in this embodiment to 2, the situation that the power of a single electric push rod 613 is insufficient and the electric push rod 613 shakes when the drawer 612 is pulled can be avoided, so that the stability when the drawer 612 is pulled is further improved.

Example 2

As shown in fig. 10 to 20, the present embodiment provides a rail apparatus, which includes a rail body 510, wherein a longitudinal section of the rail body 510 is "L" shaped; the guide rail body 510 comprises a connecting part 511 used for being connected with the switch cabinet body, the upper end part of the connecting part 511 is provided with a mounting part 512 which is perpendicular to the connecting part 511, the mounting part 512 is provided with a sliding groove 512a, and the sliding groove 512a is internally provided with a second sliding block 512b which is matched with the sliding groove 512a and has the same length with the sliding groove 512 a; one end of the connecting part 511 is provided with a first gear mounting cavity 521, and a first gear 522 which can rotate along the sliding direction of the sliding chute 512a is arranged in the first gear mounting cavity 521; the bottom surface of the mounting portion 512 is communicated with the first gear mounting cavity 521, and the bottom end of the second slider 512b is provided with a second rack 531 matched with the first gear 522.

By the arrangement of the guide rail body 510, the first gear 522 and the second rack 531 in the embodiment, before the drawer of the switch cabinet is installed, the connection part 511 is installed on the side walls at the two ends of the switch cabinet, then the drawer is installed on the second slider 512b, and then the second slider 512b is pushed into the sliding groove 512a of the installation part 512, so that the installation of the drawer of the switch cabinet is completed. Through the cooperation of second slider 512b and spout 512a among the rail device and the cooperation of first gear 522 and second rack 531 for the removal of drawer is more stable when pulling out the cubical switchboard with the drawer or pushing the drawer into the cubical switchboard, compares in the mode that sets up the gyro wheel at drawer both ends, and what the preferred reduced the drawer when removing the drawer rocks, makes the drawer more stable when using.

In this embodiment, a plurality of supporting columns 541 are disposed on two end surfaces of the first gear 522 along the circumferential direction of the first gear 522, a second elastic member mounting cavity 542 communicating with the first gear mounting cavity 521 is disposed at the lower end of the first gear mounting cavity 521 in the mounting portion 512, and the cross section of the second elastic member mounting cavity 542 is square; the second elastic piece mounting cavity 542 is internally provided with a second elastic piece 543 which can slide and is in clearance fit with the second elastic piece mounting cavity 542, the upper end of the second elastic piece 543 is provided with two limit blocks 543a which are used for inserting between the two support columns 541 to limit the first gear 522, the second elastic piece mounting cavity 542 is internally provided with a second spring 544 positioned below the second elastic piece 543, and the upper end part of the second spring 544 abuts against the second elastic piece 543; a deflector rod installation groove 551 is arranged at the center of the bottom end of the end surface of the second elastic piece 543 far away from the inner side of the guide rail body 510, a deflector rod 523 capable of sliding is arranged in the deflector rod installation groove 551, an L-shaped through hole 524 matched with the deflector rod 523 is arranged on the end surface of the installation part 512, and the end of the deflector rod 523 extends out of the L-shaped through hole 524.

Through the arrangement of the supporting post 541, the second elastic member 543, the second spring 544, the shift lever 523 and the L-shaped through hole 524 in this embodiment, before moving the second slider 512b, the shift lever 523 can be pulled downward, the shift lever 523 can be moved into the L-shaped through hole 524, and then the shift lever 523 can be moved horizontally to clamp the shift lever 523 in the L-shaped through hole 524, at this time, the limiting block 543a is moved below the first gear 522, so that a user can move the drawer to a specified position or pull the drawer out of the switch cabinet; after the user moves the second slider 512b to a designated position in the sliding slot 512a, the lever 523 can be moved horizontally to enable the second elastic member 543 to move upwards under the action of the second spring 544, so that the limiting block 543a of the second elastic member 543 extends into the space between the supporting posts 541 on the first gear 522 to limit the first gear 522, thereby limiting the second slider 512 a. In this embodiment, through the cooperation between the second elastic member 543 and the first gear 522, the second slider 512b can be limited by the cooperation between the second elastic member 543 and the first gear 522 when the drawer is pushed into the switch cabinet, so that the drawer can be conveniently fixed; when the electrical elements in the drawer are overhauled, a user only needs to draw the drawer out of the switch cabinet for a distance and then limit the drawer through the matching of the second elastic piece 543 and the first gear 522, so that the user can overhaul the electrical elements in the drawer without completely drawing the drawer out of the switch cabinet, and the overhaul of the electrical elements in the drawer in the switch cabinet is realized more conveniently; meanwhile, the situation that the fit between the second rack 531 and the first gear 522 is loosened due to frequent taking out of the drawer is avoided; wherein the cooperation of second elastic piece 543 and first gear 522 for after adjusting the position of drawer, second elastic piece 543 can be fixed the drawer with first gear 522's cooperation, thereby has prevented that the drawer from taking place to rock when overhauing the drawer, thereby has promoted the stability when overhauing the drawer. (Note that, when the guide rail body 510 is installed in the switch cabinet, in order to install the shift lever 523, through holes matched with the L-shaped through hole 524 and the shift lever 523 should be arranged on the side wall of the switch cabinet).

In this embodiment, a second screw hole 561 with a vertically downward opening is disposed in the second elastic member 543, a screw post 562 matched with the second screw hole 561 is disposed in the second screw hole 561, an upper end portion of the second spring 544 abuts against the screw post 562, the screw post 562 is provided with a plurality of slots 562a disposed along a height direction of the screw post 562, a lower end portion of the second elastic member mounting cavity 542 is outwardly expanded to form a gear ring sliding cavity 545, a rotatable gear ring 552 in clearance fit with the gear ring sliding cavity 545 is connected to a bottom end of the second elastic member 543, and a gear ring bump 563 for clearance fit with the slots 562a is disposed in the gear ring 552; a second gear installation cavity 564 is arranged at one side of the second elastic piece installation cavity 542 in the connecting part 511, and a second gear 546 matched with the gear ring 552 is arranged in the second gear installation cavity 564; the upper end portion of the second gear 546 meshes with the ring gear 552.

Through the arrangement of the second screw hole 561, the threaded post 562, the clamping groove 562a, the gear ring 552 and the second gear 564 in the embodiment, a user can draw the drawer out by a distance, the second gear 564 is screwed to drive the gear ring 552 to rotate, and due to the matching of the gear ring bump 563 on the gear ring 552 and the clamping groove 562a, the threaded post 562 is driven by the gear ring 552 to rotate, so that the height of the threaded post 563 in the vertical direction is adjusted, and the bottom end of the threaded post 563 abuts against the second spring 544, so that the adjustment of the compression amount of the second spring 544 is realized; not only is the difficulty in shifting the shift lever 523 caused by the over-large compression amount of the second spring 544 avoided, but also the difficulty in shifting the shift lever 523 caused by the over-small compression amount of the second spring 544 avoided, which causes the limit block 543a of the second elastic member 543 to be unable to abut against the supporting column 541 of the first gear 522, thereby better improving the stability of the guide rail device when in use; meanwhile, the second gear 546 is disposed on the connection portion 511, so that a user can rotate the second gear 546 to adjust the compression amount of the second spring 544 after moving one end of the drawer away from the other end, thereby conveniently adjusting the compression amount of the second spring 544.

In this embodiment, a thread 571 arranged along the circumferential direction of the threaded post 562 is disposed at the lower end of the second elastic member 543, a threaded connection seat 572 matching with the thread 571 is disposed on the second elastic member 543, a threaded connection seat through hole 572a matching with the threaded post in a clearance fit is disposed on the threaded connection seat 572, a flange installation cavity 573 is formed between the threaded connection seat 572 and the second elastic member 543, a rotatable flange 574 is disposed in the flange installation cavity 573, a lower end portion of the flange 574 extends out of the threaded connection seat through hole 572a, and an end portion of the flange 574 extending out of the threaded connection seat through hole 572a is fixedly connected to the ring gear 552.

Through the arrangement of the screw 571, the screw connection seat 572 and the flange 574 in this embodiment, when the ring gear 552 is mounted, the flange 574 can be placed at the bottom end of the second elastic piece 543, then the screw connection seat 572 is screwed onto the second elastic piece 543, and the ring gear 552 is mounted on the flange 574, so that the ring gear 522 can be mounted conveniently.

In this embodiment, a second spring mounting groove 562b having a downward opening is formed in the threaded post 562, and the end of the second spring 544 abuts against the second spring mounting groove 562 b.

Through the arrangement of the second spring mounting groove 562b in this embodiment, the position of the second spring 544 in the second elastic member mounting cavity 542 can be prevented from being deviated, so that the stability of the rail apparatus during use is preferably improved.

In this embodiment, the length of the second elastic member installation cavity 542 in the vertical direction is greater than the length of the L-shaped through hole 524 in the vertical direction.

Through the length of the second elastic piece installation cavity 542 and the L-shaped through hole 524 in the embodiment, when the shift lever 523 is shifted to the lower end of the L-shaped through hole 524, the upper end of the second elastic piece 543 can still be better attached to the second elastic piece installation cavity 542, so that the situation that the second elastic piece 543 completely moves into the gear ring sliding cavity 545 when the shift lever 523 is shifted to cause the second elastic piece 543 to shake in the gear ring sliding cavity 545 is avoided, and the stability of the guide rail device in use is better improved.

In this embodiment, the engaging groove 562a extends from the lower end surface of the screw pillar 562 to the upper end portion of the screw pillar 562 and is away from the upper end surface of the screw pillar 562.

Through the setting in draw-in groove 562a position in this embodiment, can make screw column 562 move down to when ring gear lug 563 leans on the upper end of draw-in groove 562a, screw column 562 can't move down to prevented screw column 562 break away from with the cooperation of second screw 561, the promotion of preferred this guide rail device stability when using.

In the present embodiment, the length of the second gear 546 in the vertical direction is greater than the length of the L-shaped through hole 524 in the vertical direction.

By setting the length of the second gear 546 in the vertical direction to be greater than the length of the L-shaped through hole 524 in the vertical direction, the second gear 546 and the gear ring 552 can be always engaged together when the shift lever 523 is moved, so that the second gear 546 and the gear ring 552 are prevented from being disengaged when the shift lever 523 is moved, and the stability of the guide rail device in use is preferably improved.

In this embodiment, the lower end of the gear ring sliding cavity 545 penetrates the connecting portion 511, the opening at the lower end of the gear ring sliding cavity 545 is connected with a rotating seat 547 through a thread, and the bottom surface of the rotating seat 547 is provided with a cross-shaped groove 547 a.

Through the arrangement of the gear ring sliding cavity 545 and the rotating seat 547 in this embodiment, when the second elastic member 543 is installed, the rotating seat 547 is taken out of the gear ring sliding cavity 545, then the second elastic member 543 is pushed into the second elastic member installation cavity 542 from the bottom end of the gear ring sliding cavity 545, and then the shift lever 523 is installed in the shift lever installation groove 551 through the through hole and the L-shaped through hole 524 on the switch cabinet, thereby realizing the installation of the second elastic member 543. The cross-shaped groove 547a is convenient for a user to screw the rotating seat 547.

In this embodiment, the connecting portion 511 is provided with a plurality of first counter bores 511a arranged along the length direction of the connecting portion 511, and the second slider 512b is provided with a plurality of second guide rails 512b1 arranged along the length direction of the second slider 512 b.

Through the arrangement of the first counter bore 511a in the embodiment, the connecting part 511 can be mounted on the side wall of the switch cabinet through a tool such as a bolt penetrating through the first counter bore 511a, so that the guide rail body 510 can be mounted on the switch cabinet more conveniently; through the arrangement of the second counterbore 512b1 in the embodiment, the drawer can be mounted on the second sliding block 512b through a bolt or other tools penetrating through the second counterbore 512b1, so that the connection between the drawer and the second sliding block 512b is realized more conveniently.

Example 3

As shown in fig. 1 to 20, the present embodiment provides a switch cabinet, wherein the cabinet body adopts the drawer-type structure of the guide rail and the guide rail device described in embodiments 1 and 2, and by using the above structure, the cabinet body in the present embodiment can be more stable and have better safety when in use.

In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The utility model provides a cubical switchboard, includes the cabinet body, its characterized in that: a rear bottom plate (611) fixedly connected with the cabinet body is arranged in the cabinet body, and a drawer (612) positioned in the cabinet body is arranged at one side of the rear bottom plate (611); an electric push rod (613) is arranged on the end face, far away from the drawer (612), of the rear bottom plate (611), and a piston rod of the electric push rod (613) penetrates through the rear bottom plate (611) and can move towards the drawer end; the drawer (612) comprises a rear side plate (612a) close to the rear bottom plate (611), a rear side plate through hole (621) in clearance fit with the end part of a piston rod of the electric push rod (613) is formed in the rear side plate (612a), a first elastic piece mounting cavity (631) which is positioned above the rear side plate through hole (621) and communicated with the rear side plate through hole (621) is formed in the rear side plate (612a), a first arc-shaped groove (632) is formed in the end part of the piston rod of the electric push rod (613), a slidable first elastic piece (633) is arranged in the first elastic piece mounting cavity (631), and a second arc-shaped groove (633a) capable of extending into the first arc-shaped groove (632) is formed in the lower end part of the first elastic piece (633); the end face, close to the drawer (612), of the rear bottom plate (611) is connected with a baffle (614) perpendicular to the rear bottom plate (611), the upper end of the first elastic piece (633) extends out of the rear side plate (612a), an inclined face (651) used for being matched with the baffle (614) to enable the second arc-shaped groove (633a) to be abutted into the first arc-shaped groove (632) is arranged at the end portion, extending out of the rear side plate (612a), of the first elastic piece (633), and the inclined face (651) extends from the end face, close to the rear bottom plate (611), of the first elastic piece (633) to the end face, far away from the rear bottom plate (611), of the first elastic piece (633); a first spring (634) for pushing the upper end part of the first elastic piece (633) out of the first elastic piece mounting cavity (631) is arranged in the first elastic piece mounting cavity (631);

a guide rail body (510) fixedly connected with the drawer (612) is arranged below the drawer (612), and the longitudinal section of the guide rail body (510) is L-shaped; the guide rail body (510) comprises a connecting part (511) used for being connected with the switch cabinet body, the upper end part of the connecting part (511) is provided with a mounting part (512) which is perpendicular to the connecting part (511), and the lower end surface of the drawer (612) is fixedly connected with the upper end surface of the mounting part (512); a sliding groove (512a) is arranged on the mounting part (512), and a second sliding block (512b) which is matched with the sliding groove (512a) and has the same length with the sliding groove (512a) is arranged in the sliding groove (512 a); one end of the connecting part (511) is provided with a first gear mounting cavity (521), and a first gear (522) which can rotate along the sliding direction of the sliding chute (512a) is arranged in the first gear mounting cavity (521); the bottom surface of the mounting part (512) is communicated with the first gear mounting cavity (521), and the bottom end of the second sliding block (512b) is provided with a second rack (531) matched with the first gear (522).

2. A switchgear cabinet according to claim 1, characterized in that: the side walls at two ends in the first elastic piece installation cavity (631) are expanded outwards to form an ear sliding cavity (635), an ear part (636) which is positioned in the ear sliding cavity (635) and is in clearance fit with the ear sliding cavity (635) is arranged on the first elastic piece (633), the first spring (634) is arranged in the ear sliding cavity (635), and the upper end part of the first spring (634) is abutted against the ear part (636); the opening part of the upper end part of the first elastic piece mounting cavity (631) expands outwards to form a sealing plate mounting groove (637), and a sealing plate (638) used for limiting the lug part (636) is connected with a bolt in the sealing plate mounting groove (637).

3. A switchgear cabinet according to claim 1, characterized in that: the inclined surface 651 extends from the end surface of the first elastic member 633 near the rear base 611 to the center of the first elastic member 633, and the length of the first arc-shaped groove 632 in the horizontal direction is greater than twice the thickness of the first elastic member 633 in the horizontal direction.

4. A switchgear cabinet according to claim 1, characterized in that: the end part of the piston rod of the electric push rod (613), which is close to the first arc-shaped groove (632), is provided with a connecting rod (661), the electric push rod (613) passes through the center of the connecting rod (661) and is in interference fit with the connecting rod (661), the connecting rod (661) is arranged perpendicular to the baffle (614), the baffle (614) is provided with a first strip-shaped through hole (614a), the end part of the connecting rod (661) passes through the first strip-shaped through hole (614a), the connecting rod (661) is provided with at least one mounting column (662) at two ends of the piston rod of the electric push rod (613), the end surface of the mounting column (662) is flush with the end surface of the electric push rod (613), and the mounting column (662) is provided with a third arc-shaped groove (662 a.

5. A switchgear cabinet according to claim 4, characterized in that: second strip-shaped through holes (663) are formed in the two ends, located on the piston rod of the electric push rod (613), of the connecting rod (661), and first screw holes (671) are formed in the end face, close to the connecting rod (661), of the mounting column (662).

6. A switchgear cabinet according to claim 1, characterized in that: a plurality of supporting columns (541) arranged along the circumferential direction of the first gear (522) are arranged on two end faces of the first gear (522), a second elastic piece mounting cavity (542) communicated with the first gear mounting cavity (521) is arranged at the lower end part of the first gear mounting cavity (521) in the mounting part (512), and the section of the second elastic piece mounting cavity (542) is square; the second elastic piece installation cavity (542) is internally provided with a second elastic piece (543) which can slide and is in clearance fit with the second elastic piece installation cavity (542), the upper end of the second elastic piece (543) is provided with two limiting blocks (543a) which are used for being inserted between the two supporting columns (541) to limit the first gear (522), the second elastic piece installation cavity (542) is internally provided with a second spring (544) which is positioned below the second elastic piece (543), and the upper end part of the second spring (544) is abutted against the second elastic piece (543); the center of the end face bottom end of the inner side of the guide rail body (510) on the second elastic piece (543) is provided with a deflector rod installation groove (551), a slidable deflector rod (523) is arranged in the deflector rod installation groove (551), the end face of the installation part (512) is provided with an L-shaped through hole (524) matched with the deflector rod (523), and the end part of the deflector rod (523) extends out of the L-shaped through hole (524).

7. A switchgear cabinet according to claim 6, characterized in that: a second screw hole (561) with a vertically downward opening is formed in the second elastic piece (543), a threaded column (562) matched with the second screw hole (561) is arranged in the second screw hole (561), the upper end of the second spring (544) abuts against the threaded column (562), a plurality of clamping grooves (562a) arranged along the height direction of the threaded column (562) are formed in the threaded column (562), the lower end of the second elastic piece mounting cavity (542) expands outwards to form a gear ring sliding cavity (545), the bottom end of the second elastic piece (543) is connected with a rotatable gear ring (552) in clearance fit with the gear ring sliding cavity (545), and a gear ring projection (563) in clearance fit with the clamping grooves (562a) is arranged in the gear ring (552); a second gear mounting cavity (564) is formed in the connecting part (511) and located on one side of the second elastic piece mounting cavity (542), and a second gear (546) matched with the gear ring (552) is arranged in the second gear mounting cavity (564); the upper end of the second gear (546) is meshed with the ring gear (552).

8. A switchgear cabinet according to claim 7, characterized in that: the lower extreme of second elastic component (543) is equipped with screw thread (571) along screw post (562) circumference setting, be equipped with on second elastic component (543) with screw thread (571) matched with screw thread connecting seat (572), be equipped with on screw thread connecting seat (572) with screw post clearance fit's screw thread connecting seat through-hole (572a), constitute flange installation cavity (573) between screw thread connecting seat (572) and second elastic component (543), be equipped with rotatable flange (574) in flange installation cavity (573), screw thread connecting seat through-hole (572a) is stretched out to the lower extreme of flange (574), the end that stretches out screw thread connecting seat through-hole (572a) on flange (574) is connected with ring gear (552) fixed.

9. A switchgear cabinet according to claim 7, characterized in that: a spring installation groove (562b) with a vertically downward opening is formed in the threaded column (562), and the end of the second spring (544) abuts against the spring installation groove (562 b).

10. A switchgear cabinet according to claim 7, characterized in that: the length of the second elastic piece installation cavity (542) in the vertical direction is larger than that of the L-shaped through hole (524) in the vertical direction.