CN112103832B

CN112103832B - Valve driving mechanism for switch cabinet and switch cabinet with same

Info

Publication number: CN112103832B
Application number: CN202010983854.1A
Authority: CN
Inventors: 谈晓芬; 李庆跃; 王腊洪; 周凯; 曹孝祖
Original assignee: Eaton Electrical Equipment Co Ltd
Current assignee: Eaton Electrical Equipment Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2022-09-02
Anticipated expiration: 2040-09-18
Also published as: CN112103832A

Abstract

The invention relates to a valve driving mechanism for a switch cabinet and the switch cabinet with the valve driving mechanism. This cubical switchboard includes handcart room and the last valve and the lower valve that are located this handcart room rear side, and valve actuating mechanism includes: and the paired upper driving mechanisms are symmetrically arranged on the inner sides of the left side plate and the right side plate of the handcart room and are respectively connected to the left end side and the right end side of the upper valve. And the lower driving mechanism is arranged on the lower side of the bottom plate of the handcart room and is connected to the lower valve through the bottom plate. Wherein, the paired upper driving mechanism and lower driving mechanism are configured to respectively drive the upper valve and the lower valve to move up and down when being stressed, so as to control the opening or closing of the upper valve and the lower valve.

Description

Valve driving mechanism for switch cabinet and switch cabinet with same

Technical Field

The invention relates to the technical field of electrical equipment, in particular to a valve driving mechanism for a switch cabinet and the switch cabinet with the valve driving mechanism.

Background

Switchgear cabinets, especially switchgear cabinets with withdrawable hand trucks, are widely used as important equipment in power systems. The handcart is characterized in that a valve and a valve driving mechanism for driving the valve to open and close are usually arranged in the switch cabinet, so that when the handcart is not in a working state, the valve is controlled to be closed through the valve driving mechanism to achieve an isolation and protection effect on an electrified static contact in the switch cabinet, an external operator is prevented from accidentally touching the electrified static contact in the switch cabinet to cause a safety accident, and when the handcart is to be in the working state, the valve is controlled to be opened through the valve driving mechanism to achieve electric connection between a movable contact on the handcart and the electrified static contact in the switch cabinet. However, the shutter driving mechanisms in the prior art are generally arranged in pairs at the left and right sides in the switch cabinet to synchronously control the upper and lower shutters in the switch cabinet, which obviously occupies a large space in the width direction of the switch cabinet, thereby causing a problem of large volume of the switch cabinet.

There is therefore a need in the art for a flap drive mechanism which occupies less space at least in the width direction of the switchgear cabinet.

Disclosure of Invention

The present invention is directed to a shutter drive mechanism that solves at least some of the problems set forth above.

The invention also aims to provide a switch cabinet applying the improved valve driving mechanism.

According to an aspect of the present invention, there is provided a shutter driving mechanism for a switch cabinet including a hand-car room and upper and lower shutters located at a rear side of the hand-car room, the shutter driving mechanism including: the paired upper driving mechanisms are symmetrically arranged on the inner sides of a left side plate and a right side plate of the handcart room and are respectively connected to the left end side and the right end side of the upper valve; a lower driving mechanism arranged at the lower side of a bottom plate of the handcart room and connected to the lower valve through the bottom plate; wherein the paired upper driving mechanism and lower driving mechanism are configured to drive the upper shutter and lower shutter to move up and down respectively when being stressed, so as to control the opening or closing of the upper shutter and lower shutter.

Compared with the prior art, the valve driving mechanism is designed into the upper driving mechanism and the lower driving mechanism which are separated, so that the opening and closing of the upper valve and the lower valve can be controlled independently, and the application range of the valve driving mechanism is expanded. In addition, the lower driving mechanism is arranged at the lower side of the bottom plate, and only the upper driving mechanism is arranged at the left side and the right side of the handcart room, so that the space occupied by the valve driving mechanism in the left-right direction, namely the width direction of the handcart room is greatly reduced, the valve driving mechanism can be applied to a switch cabinet with a smaller size, and the applicability of the switch cabinet is further improved.

Preferably, the lower driving mechanism is configured to include: a lower mounting plate fixedly connected to a lower side of the base plate and extending downward; a lower interlock plate pivotally connected to the lower mounting plate and extending upwardly through the base plate adjacent the force bearing end of the lower mounting plate to pivot the lower interlock plate about the lower mounting plate when subjected to a force; the top end of the lower connecting rod is connected to the lower valve, and the bottom end of the lower connecting rod extends downwards to penetrate through the bottom plate to be movably connected with the driving end, far away from the lower mounting plate, of the lower interlocking plate so as to drive the lower valve to move up and down along with the rotation of the lower interlocking plate; a reset member having a top end connected to a lower side of the base plate and a bottom end connected to the lower interlock plate such that the lower interlock plate is configured to rotate away from the base plate against an urging force of the reset member.

Preferably, the bottom end of the lower link is configured to roll or articulate with the drive end of the lower interlock plate.

Preferably, the lower interlock plate has a plurality of coupling holes formed thereon, and the reset piece is configured to be coupled to the lower interlock plate via one of the plurality of coupling holes.

Preferably, the reset element is designed as a tension spring or a torsion spring.

Preferably, the upper drive mechanism is configured to include: an upper mounting plate fixedly connected to an inner side of a side plate of the handcart room; the upper interlocking plate is rotatably connected to the upper mounting plate, and a stirring piece is arranged on one side of the upper interlocking plate, which is far away from the upper mounting plate, so that the upper interlocking plate can rotate around the upper mounting plate when stressed; and the top end of the upper connecting rod is hinged to the end side of the upper valve, and the bottom end of the upper connecting rod is hinged to the driving end, away from the upper mounting plate, of the upper interlocking plate so as to drive the upper valve to move up and down along with the rotation of the upper interlocking plate.

Preferably, the valve driving mechanism is further configured to include two guide rods arranged in parallel at the rear side of the handcart room, wherein the upper valve and the lower valve are movably sleeved on the guide rods.

Preferably, a limiting groove is formed on the outer periphery of the guide rod, and the valve driving mechanism is configured to further include a support plate sleeved with the limiting groove of the guide rod and cooperating with the limiting groove to limit the stroke of the upper valve or the lower valve.

According to another aspect of the invention, a switch cabinet is also provided, the switch cabinet comprises a handcart room, an upper valve and a lower valve which are positioned at the rear side of the handcart room, and the switch cabinet further comprises the valve driving mechanism.

Preferably, the switch cabinet is configured to further include a trolley movable relative to the handcart room, and then the shutter driving mechanism is configured to further include a lower pushing plate provided at the bottom of the trolley to push the lower driving mechanism, and an upper pushing plate located at the left side plate and the right side plate of the trolley to push the upper driving mechanism.

Additional features and advantages of the invention will be set forth in part in the description which follows, and in part will be apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the invention.

Drawings

Embodiments of the invention are described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic view of a shutter drive mechanism and a switch cabinet employing the same according to the present invention, wherein a cart is not entered into the switch cabinet and an upper shutter and a lower shutter are closed;

FIG. 2 is a schematic view of a door drive mechanism and switchgear to which the present invention is applied, wherein a cart enters the switchgear and the upper and lower doors are closed;

fig. 3(a) and 3(b) are a front view and a side view, respectively, of the shutter driving mechanism in fig. 2;

FIG. 4 is a schematic view of a shutter drive mechanism and a switchgear cabinet employing the same, wherein a cart enters the switchgear cabinet and the upper and lower shutters are opened, according to the present invention;

fig. 5(a) and 5(b) are a front view and a side view, respectively, of the shutter driving mechanism in fig. 4.

Description of reference numerals:

100-a switch cabinet; 10-valve drive mechanism; 11-an upper drive mechanism; 111-an upper mounting plate; 112-upper interlock plate; 113-an upper link; 114-a toggle; 12-a lower drive mechanism; 121-a lower mounting plate; 122-lower interlock plate; 123-lower connecting rod; 124-a reset piece; 125-oblong holes; 126-a hitching hole; 13-a guide bar; 141-an upper bracket plate; 142-a lower support plate; 15-lower locking plate; 16-lower thrust plate; 17-upper locking plate; 18-an upper propulsion plate; 21-upper valve; 22-lower shutter; 31-a cabinet body; 32-handcart room; 321-a bottom plate; 33-a bus bar compartment; 34-a cable chamber; 35-instrument room; 36-a trolley; 361-upper moving contact; 362-lower moving contact; 371-upper stationary contact; 372-lower static contact; a-an upper rotation center; b-lower center of rotation.

Detailed Description

Referring now to the drawings, a detailed description will be given of an exemplary embodiment of the shutter drive mechanism disclosed in the present invention and a switchgear cabinet to which the same is applied. Although the drawings are provided to present some embodiments of the invention, the drawings are not necessarily to scale of particular embodiments, and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the present disclosure. The position of some components in the drawings can be adjusted according to actual requirements on the premise of not influencing the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification are not necessarily referring to all of the drawings or the examples.

Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art. In this specification, "front" and "rear" of the switchgear refer to the left side and the right side in fig. 1, respectively, "upper/top" and "lower/bottom" refer to the upper side and the lower side in fig. 1, respectively, and "left" and "right" refer to the left side and the right side when the switchgear is viewed from the front side viewing angle in fig. 1.

The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

As used herein, the terms "joined," "connected," and the like, are intended to encompass both components which are indirectly joined together through intervening layers (e.g., adhesives, welds, etc.) or intermediate members (e.g., connectors, transitions, etc.), and components which are directly joined together without any intervening layers (e.g., adhesives, welds, etc.) or intermediate members (e.g., connectors, transitions, etc.).

Fig. 1 to 5(b) show by way of example a shutter drive mechanism 10 of the present invention and a switchgear 100 to which it is applied. The switchgear 100 in this example may include a cabinet 31 and a plurality of partitions arranged within the cabinet 31 to divide a space within the cabinet 31 into a handcart room 32, a bus-bar room 33, a cable room 34, and an instrument room 35 as shown in fig. 1. Wherein the switch cabinet 100 further comprises a trolley 36, the trolley 36 can enter from the front side of the handcart room 32 from the isolated position not entering the switch cabinet 100 shown in fig. 1, move to the test position shown in fig. 2, and can continue to move to the working position shown in fig. 4. In the isolation position and the testing position, a movable contact on the trolley 36, such as a functional trolley, is disengaged from a fixed contact in the switch cabinet 100, and in the working position, the movable contact on the trolley 36 is electrically connected with the fixed contact in the switch cabinet 100 to conduct a circuit. Specific information about the movable contacts and the static contacts and the like can be referred to the movable contacts and the static contacts in the prior art, and the detailed description is omitted here.

Wherein, the rear side of the handcart room 32 can be provided with an upper valve 21 and a lower valve 22 respectively corresponding to the upper fixed contact 371 and the lower fixed contact 372. The upper valve 21 and the lower valve 22 are kept in a closed state when the trolley 36 is between the isolation position and the test position, and the movable contacts on the trolley 36, including the upper movable contact 361 and the lower movable contact 362, are opposite to and disengaged from the fixed contacts of the switch cabinet 100, including the upper fixed contact 371 and the lower fixed contact 372 at intervals; when the trolley 36 is in the working position, the trolley is kept in the open state, and the upper movable contact 361 and the lower movable contact 362 on the trolley 36 are respectively and electrically connected with the upper fixed contact 371 and the lower fixed contact 372 of the switch cabinet 100 across the upper valve 21 and the lower valve 22. Alternatively, the state change of the upper and

lower valves

21 and 22 may be linked with the movement of the cart 36 moving from the test position to the working position, or the state change of the upper and

lower valves

21 and 22 may be manually switched by an operator.

Specifically, the shutter driving mechanism 10 of the present invention may include an upper driving mechanism 11 and a lower driving mechanism 12 in a pair. The pair of upper driving mechanisms 11 may be symmetrically disposed inside the left and right side plates of the handcart room 32 and connected to the left and right end sides of the upper shutter 21, respectively, and the lower driving mechanisms 12 are disposed under the bottom plate 321 of the handcart room 32 and connected to the lower shutter 22 through the bottom plate 321, so that the pair of upper and lower driving mechanisms 11 and 12, when being forced, such as pushed by the cart 36 moving from the test position to the working position, drive the upper shutter 21 to move up and the lower shutter 22 to move down to open the upper and

lower shutters

21 and 22, and drive the upper shutter 21 to move down and the lower shutter 22 to move up to close the upper and

lower shutters

21 and 22 when the cart 36 moves from the working position to the test position. It can be seen that the upper and lower driving mechanisms 11 and 12 are constructed as separate bodies to control the opening and closing of the upper and

lower shutters

21 and 22, respectively, thereby improving the convenience of the shutter driving mechanism 10 of the present invention. In addition, the lower driving mechanism 12 is disposed at the lower side of the bottom plate 321, so that the space occupied by the shutter driving mechanism 10 in the present invention in the left-right direction, i.e., the width direction, of the hand truck room 32 is greatly reduced, and thus the shutter driving mechanism 10 in the present invention can be applied to the small-sized switch cabinet 100, thereby improving the applicability thereof.

In still another embodiment, as shown in fig. 2 to 5(b), the shutter driving mechanism 10 may be configured to include two guide rods 13 arranged in parallel at the rear side of the handcart room 32, and both left and right end sides of the upper and

lower shutters

21 and 22 are movably fitted to the two guide rods 13 so that the upper and

lower shutters

21 and 22 can move up and down along the guide rods 13. Wherein, the top end of the guide rod 13 is at least higher than the maximum stroke of the upper shutter 21 moving upwards, and the bottom end of the guide rod 13 is at least lower than the maximum stroke of the lower shutter 22 moving downwards, so as to avoid causing obstruction to the movement of the upper shutter 21 and the lower shutter 22.

Alternatively, the maximum stroke of the upper shutter 21 after the maximum stroke of the upper movement and the maximum stroke of the lower shutter 22 after the maximum stroke of the lower movement are limited by the pair of the upper drive mechanism 11 and the lower drive mechanism 12, respectively. As shown in fig. 3(a) and 3(b), the maximum stroke with respect to the downward movement of the upper shutter 21 and the upward movement of the lower shutter 22 are limited by the guide bar 13 and the bracket plate engaged with the guide bar 13. Specifically, a circumferential limit groove may be formed on an outer circumference of the guide rod 13, and the bracket plate may be sleeved to the limit groove to form a posture extending in a radial direction from the guide rod 13, so as to limit a movement stroke of the upper or

lower shutter

21 or 22. As shown in the drawing, the guide rods 13 on the left and right sides are each provided with an upper support plate 141 for limiting the maximum downward movement stroke of the upper shutter 21 and a lower support plate 142 for limiting the maximum upward movement stroke of the lower shutter 22. Therefore, the processing mode and the installation mode are simple, and the structures such as an elastic pin inserted into the radial through hole of the guide rod 13 in the prior art can be avoided, so that the insulating property is enhanced.

Alternatively, the upper shutter 21 may be provided at four apexes thereof with connection portions extending transversely to the upper shutter 21, and the connection portions may be provided with through holes for the guide rods 13 to pass therethrough, so that the upper shutter 21 is mounted thereto to be movable up and down with respect to the guide rods 13. Similarly, the lower valve 22 is connected to the guide bar 13 in a similar manner to the lower valve 22 is connected to the guide bar 13.

In yet another embodiment, as shown in fig. 2 to 5(b), the lower driving mechanism 12 may include a lower mounting plate 121, a lower interlock plate 122, a lower link 123, and a restoring member 124.

In particular, the lower mounting plate 121 may be welded or attached to the underside of the base plate 321 via fasteners, such as screws, and may not be movable relative to the base plate 321. The lower interlock plate 122 is rotatably connected to the lower mounting plate 121 with a rotation axis perpendicular to the left and right side plates of the handcart room 32. Illustratively, the connection between the lower interlock plate 122 and the lower mounting plate 121 may be achieved via cooperation of a shaft fixedly connected to the lower mounting plate 121, a bushing movably sleeved to the shaft, and the lower interlock plate 122 sleeved to the bushing. The force-bearing end of the lower interlock plate 122 adjacent the lower mounting plate 121 extends upwardly through the base plate 321 to be rotatable when pushed by the cart 36. The top end of the lower link 123 may be connected to the bottom middle portion of the lower shutter 22, and the bottom end of the lower link extends downward through the bottom plate 321 to be movably connected to the driving end of the lower interlock plate 122 away from the lower mounting plate 121, so as to drive the lower shutter 22 to move up and down along with the rotation of the lower interlock plate 122. Accordingly, the bottom plate 321 is provided with a length of opening with respect to the force-bearing end of the lower interlock plate 122 and the area of the lower link 123 so as not to hinder the rotation of the lower interlock plate 122 and the movement of the lower link 123. The design in which the force-bearing end of the lower interlock plate 122 is closer to the lower mounting plate 121 than the driving end can utilize the principle of leverage to move the lower valve 22 a greater distance under the same force. And the middle of the lower shutter 22 may be broadly understood as an area of the bottom side of the lower shutter 22 other than the left and right end sides, preferably a central area of the bottom side of the lower shutter 22 to facilitate the movement of the lower shutter 22 on the left and right guide bars 13. The top end of the reset member 124 may be connected to the lower side of the base plate 321 and the bottom end connected to the lower interlock plate 122, so that the lower interlock plate 122 needs to be rotated away from the base plate 321 against the force of the reset member 124 when pushed by the cart 36 moving from the test position to the working position.

Alternatively, the bottom end of the lower link 123 may be roll connected or slidably connected or hinged to the drive end of the lower interlock plate 122. Here, when the lower link 123 is hinged to the lower interlock plate 122, the top end of the lower link 123 is also hinged to the lower shutter 22. As shown in fig. 3(a) and 3(b), when the lower link 123 is roll-connected to the lower interlock plate 122, the top end of the lower link 123 may be connected to the lower shutter 22 via a fastener such as a bolt. Illustratively, the driving end of the lower interlock plate 122 may be provided with an oblong hole 125, the oblong hole 125 extending substantially parallel to the floor 321 of the hand truck compartment 32 when the lower interlock plate 122 lower door is closed. The bottom end of the lower connecting rod 123 is sleeved into the oblong hole 125, so that when the lower interlocking plate 122 is forced to rotate, the lower interlocking plate moves in the oblong hole 125 along the oblong hole 125, and the posture of the lower interlocking plate remains unchanged, so that the lower shutter 22 is driven to move up and down.

Alternatively, the reset piece 124 may be hooked to the bottom plate 321 and the lower interlock plate 122, the lower interlock plate 122 may be provided with a plurality of hooking holes 126 extending in different directions, and the connection position of the reset piece 124 and the lower interlock plate 122 may be selected by a user according to the magnitude and direction of the reset force required, so as to improve the convenience of the shutter driving mechanism 10 in the present invention. Wherein, the reset member 124 can be designed as a tension spring or a torsion spring or other forms of return structures.

Alternatively, as shown in fig. 3(a) and 3(b), the lower end of the guide bar 13 does not extend to abut against the bottom plate 321 but is spaced apart from the bottom plate 321 by a certain distance, and the shutter driving mechanism 10 may further include a lower locking plate 15 extending upward from the bottom plate 321 and a through hole formed on the lower locking plate 15. Accordingly, the lower link 123 may be provided with a lower closing locking hole aligned with the through hole of the lower locking plate 15 when the lower shutter 22 moves up to the maximum stroke and a lower opening locking hole aligned with the through hole of the lower locking plate 15 when the lower shutter 22 moves down to the maximum stroke. When the lower closing locking hole or the lower opening locking hole is aligned with the through hole of the lower locking plate 15, the lower shutter 22 can be held in a closed state or an open state by a locking mechanism such as a padlock.

Alternatively, as shown in fig. 1, 2 and 4, the area of the underside of the cart 36 opposite the lower drive mechanism 12 may be provided with a lower push plate 16 for pushing the lower drive mechanism 12. Wherein, the lower push plate 16 may be configured to include a lower guide section substantially abutting against the upper surface of the floor 321 of the hand compartment 32 and a lower bent section bent upward from the rear end of the lower guide section, i.e., the end adjacent to the lower shutter 22, and smoothly transits between the lower guide section and the lower bent section, so that the stressed end is smoothly guided to the bottom surface of the lower guide section along the outer surface of the lower bent section after the lower bent section abuts against the stressed end of the lower interlock plate 122 and then along the smooth transition of the lower bent section and the lower guide section.

Illustratively, when the cart 36 is moved from the testing position shown in FIG. 2 to the operating position shown in FIG. 4, the lower curved section of the lower push plate 16 of the trolley 36 abuts the force-bearing end of the lower interlock plate 122 and continues to push the force-bearing end of the lower interlock plate 122 to move to the lower guide section of the lower push plate 16, thereby rotating the lower interlock plate 122 about the lower rotation center B relative to the lower mounting plate 121 in a counterclockwise direction as viewed in fig. 3(B) against the urging force of the reset piece 124, the driving end of the lower interlock plate 122 moves away from the base plate 321, so that the bottom end of the lower link 123 slidingly pulls the lower link 123 in the oblong hole 125 at the driving end of the lower interlocking plate 122, the lower shutter 22 is driven to move downwards to open the lower shutter 22, and the through hole of the lower locking plate 15 is aligned with the lower opening locking hole of the lower link 123 to connect the padlock so as to keep the lower shutter 22 in the open state. The cart 36 may now be an electroscopic cart. In this process, the restoring member 124 is stretched from the restoring state shown in fig. 3(b) to the stretched state shown in fig. 5 (b). Similarly, when the padlock is unlocked and the cart 36 is moved from the working position shown in fig. 4 to the testing position shown in fig. 2, under the restoring force generated when the restoring member 124 restores from the stretching state shown in fig. 5(B) to the restoring state shown in fig. 3(B), the lower interlocking plate 122 is pulled to rotate clockwise as shown in fig. 5(B) relative to the lower mounting plate 121 around the lower rotation center B to approach the bottom plate 321, so that the bottom end of the lower link 123 moves in the long circular hole 125 at the driving end of the lower interlocking plate 122 to push the lower link 123 and further push the lower shutter 22 to move upward to close the lower shutter 22, and at this time, the through hole of the lower locking plate 15 is aligned with the lower locking hole of the lower link 123 to connect the padlock and keep the lower shutter 22 in the closed state.

In yet another embodiment, as shown in fig. 2 to 5(b), the upper driving structure 11 may include an upper mounting plate 111, an upper interlock plate 112, and an upper link 113. Here, the two upper driving mechanisms 11 respectively disposed on the left and right side plates of the handcart room 32 have the same operation principle, and therefore the right upper driving mechanism 11 will be described as an example.

In particular, the upper mounting plate 111 may be welded or attached via fasteners such as screws to the inside of the right side plate of the hand truck compartment 32 and may not be movable relative to the hand truck 36. The upper locking plate 112 is rotatably connected to the upper mounting plate 111, and a side of the upper locking plate 112 away from the upper mounting plate 111 is provided with a toggle member 114 which rotates the upper locking plate 112 relative to the upper mounting plate 111 about an upper rotation center a when being forced, such as pushed by the trolley 36 moving relative to the trolley compartment 32. Illustratively, the upper mounting plate 111 is provided with a rotating shaft, and the upper interlocking plate 112 is movably sleeved on the rotating shaft through a shaft sleeve, so that the rotation of the upper interlocking plate 112 relative to the upper mounting plate 111 is realized through the matching of the shaft sleeve and the rotating shaft which can rotate relative to each other. The toggle member 114 may be designed as a bushing or a roller. The top end of the upper link 113 may be hinged to the right end side of the upper shutter 21 and the bottom end may be hinged to the driving end of the upper interlock plate 112 away from the upper mounting plate 111, so as to drive the upper shutter 21 to move up and down along with the rotation of the upper interlock plate 112. The design in which the toggle 114 is closer to the upper mounting plate 111 than the driving end of the upper interlock plate 112 can move the upper shutter 21 by a greater distance under the same force applied to the toggle 114 using the principle of leverage.

Alternatively, the shutter drive mechanism 10 may further include an upper lock plate 17 mounted to the left and right sides of the handcart chamber 32 and a through hole formed on the upper lock plate 17. Here, the upper lock plate 17 located on the right side of the hand truck compartment 32 is also explained as an example, as shown in fig. 3(b) and 5 (b). Accordingly, the upper interlock plate 112 may be provided with an upper opening lock hole aligned with the through hole of the upper lock plate 17 when the upper shutter 21 moves up to the maximum stroke and an upper closing lock hole aligned with the through hole of the upper lock plate 17 when the upper shutter 21 moves down to the maximum stroke. When the upper closed locking hole or the upper open locking hole is aligned with the through hole of the upper locking plate 17, the upper shutter 21 may be held in the open state or the closed state by a locking mechanism such as a padlock.

Alternatively, as shown in fig. 1, 2 and 4, the left and right sides of the cart 36 with respect to the area of the upper drive mechanism 11 may be provided with the upper push plate 18 for pushing the upper drive mechanism 11. Here again, the upper thrust plate 18 on the right side of the trolley 36 is illustrated as an example. Wherein, the upper push plate 18 may be configured to include an upper guide section extending substantially in the front-rear direction of the hand truck compartment 32 and an upper curved section provided with a downward bend from the rear end of the upper guide section, i.e., the end adjacent to the upper shutter 21, with a smooth transition therebetween, so that the upper curved section abuts against the toggle piece 114 of the upper interlock plate 112 to cause the toggle piece 114 to follow the outer surface of the upper curved section, and then smoothly guided to the top surface of the upper guide section along the smooth transition of the upper curved section and the upper guide section.

Illustratively, when the trolley 36 moves from the test position shown in fig. 2 to the working position shown in fig. 4, the upper bent section of the upper push plate 18 of the trolley 36 abuts against the toggle member 114 of the lower interlock plate 122 and continues to push the toggle member 114 to move to the upper guide section of the upper push plate 18, thereby rotating the upper interlock plate 112 around the upper rotation center a in a clockwise direction as shown in fig. 3(b) with respect to the upper mounting plate 111, so that the driving end of the upper interlock plate 112 drives the upper link 113 to move upward, thereby pushing the upper shutter 21 to move up to a maximum stroke to open the upper shutter 21, and at this time, the through hole of the upper interlock plate 17 is aligned with the upper opening locking hole of the upper interlock plate 112 to connect a padlock to maintain the upper shutter 21 in an open state. The cart 36 may now be an electroscopic cart. Similarly, when the padlock is unlocked, and the trolley 36 moves from the working position shown in fig. 4 to the testing position shown in fig. 2, the upper pushing plate 18 of the trolley 36 is disengaged from the toggle member 114, the upper locking plate 112 rotates around the upper rotation center a counterclockwise as shown in fig. 5(b) relative to the upper mounting plate 111 under the action of gravity, the upper connecting rod 113 moves downward to pull the upper shutter 21 to move downward to the maximum stroke to close the upper shutter 21, and at this time, the through hole of the upper locking plate 17 is aligned with the upper locking alignment hole of the upper locking plate 112 to connect the padlock, so as to keep the upper shutter 21 in the closed state.

It will be appreciated that the simultaneous abutment between the pair of upper push plates 18 and the pair of upper drive mechanisms 11, and between the lower push plates 16 and the lower drive mechanisms 12, is designed to facilitate the simultaneous opening or closing of the upper and

lower shutters

21 and 22, further improving the reliability of the shutter drive mechanism 10 of the present invention.

It should be understood that although the description is in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent alterations, modifications and combinations can be made by those skilled in the art without departing from the spirit and principles of the invention.

Claims

1. A shutter drive mechanism (10) for a switchgear panel (100), the switchgear panel (100) comprising a handcart room (32) and an upper shutter (21) and a lower shutter (22) located at the rear side of the handcart room (32), characterized in that the shutter drive mechanism (10) comprises:

a pair of upper driving mechanisms (11) symmetrically arranged inside left and right side plates of the hand truck room (32) and respectively connected to left and right end sides of the upper shutter (21);

a lower driving mechanism (12) disposed under a floor (321) of the handcart room (32) and connected to the lower shutter (22) through the floor (321);

wherein the paired upper driving mechanism (11) and lower driving mechanism (12) are configured to drive the upper shutter (21) and lower shutter (22) to move up and down respectively to control the opening or closing of the upper shutter (21) and lower shutter (22) when a force is applied;

the lower drive mechanism (12) is configured to include:

a lower mounting plate (121) fixedly connected to a lower side of the base plate (321) and extending downward;

a lower interlock plate (122) rotatably connected to the lower mounting plate (121) and extending upwardly through the base plate (321) adjacent a force-bearing end of the lower mounting plate (121) to rotate the lower interlock plate (122) about the lower mounting plate (121) when subjected to a force;

the top end of the lower connecting rod (123) is connected to the lower valve (22) and the bottom end of the lower connecting rod extends downwards to penetrate through the bottom plate (321) to be movably connected with the driving end, far away from the lower mounting plate (121), of the lower interlocking plate (122) so as to drive the lower valve (22) to move up and down along with the rotation of the lower interlocking plate (122);

a reset member (124) having a top end connected to a lower side of the base plate (321) and a bottom end connected to the lower interlock plate (122) such that the lower interlock plate (122) is configured to rotate away from the base plate (321) against a force of the reset member (124).

2. The shutter drive mechanism (10) for a switchgear panel (100) of claim 1 wherein the bottom end of the lower link (123) is configured to roll or hinge with the drive end of the lower interlock plate (122).

3. The shutter driving mechanism (10) for a switchgear panel (100) according to claim 1, wherein the lower interlock plate (122) has a plurality of hooking holes (126) formed thereon, and the reset member (124) is configured to be hooked to the lower interlock plate (122) through one of the plurality of hooking holes (126).

4. The flap drive mechanism (10) for a switchgear cabinet (100) according to claim 1, characterized in that the reset element (124) is designed as a tension spring or a torsion spring.

5. The shutter drive mechanism (10) for switchgear cabinets (100) according to claim 1, characterized in that the upper drive mechanism (11) is configured to comprise:

an upper mounting plate (111) fixedly connected to an inside of a side plate of the handcart room (32);

an upper interlocking plate (112) rotatably connected to the upper mounting plate (111), wherein a toggle piece (114) is arranged on one side of the upper interlocking plate (112) which is far away from the upper mounting plate (111) so as to enable the upper interlocking plate (112) to rotate around the upper mounting plate (111) when being stressed;

and the top end of the upper connecting rod (113) is hinged to the end side of the upper valve (21), and the bottom end of the upper connecting rod is hinged to the upper interlocking plate (112) far away from the driving end of the upper mounting plate (111) so as to drive the upper valve (21) to move up and down along with the rotation of the upper interlocking plate (112).

6. The shutter drive mechanism (10) for a switchgear panel (100) according to any of claims 1 to 5, characterized in that the shutter drive mechanism (10) is configured to further comprise two guide rods (13) arranged in parallel at the rear side of the handcart chamber (32), wherein both the upper shutter (21) and the lower shutter (22) are movably sleeved to the guide rods (13).

7. The shutter driving mechanism (10) for a switchgear (100) according to claim 6, wherein a limiting groove is formed on an outer circumference of the guide bar (13), and the shutter driving mechanism (10) is configured to further include a bracket plate sleeved with the limiting groove of the guide bar (13) and cooperating with the limiting groove to limit a stroke of the upper shutter (21) or the lower shutter (22).

8. A switchgear panel (100), the switchgear panel (100) comprising a hand truck compartment (32) and an upper shutter (21) and a lower shutter (22) located at the rear side of the hand truck compartment (32), characterized in that the switchgear panel (100) further comprises a shutter drive mechanism (10) according to any of claims 1 to 7.

9. The switchgear panel (100) according to claim 8, wherein said switchgear panel (100) is configured to further comprise a trolley (36) movable relative to said hand truck compartment (32), and said shutter drive mechanism (10) is configured to further comprise a lower push plate (16) provided at the bottom of said trolley (36) to push said lower drive mechanism (12), and an upper push plate (18) provided at the left and right side plates of said trolley (36) to push said upper drive mechanism (11).