A new switch cabinet valve mechanism

Abstract

The utility model discloses a novel switchgear valve mechanism, including support, and the upper elbow arm and lower elbow arm of movable installation on the support, the upper elbow arm with lower elbow arm all are flat plate structure, one side of support is equipped with intermediate shaft, the upper elbow arm with lower elbow arm all are equipped with connecting portion, connecting portion with intermediate shaft rotates and connects, the upper elbow arm rear part is equipped with the pull plate, the support rear part is equipped with the pull rod, and the pull plate with pull rod between is equipped with the tension spring. The utility model discloses a tension spring replaces the torsional spring of traditional valve mechanism, so that need not reserve the space of torsional spring installation in the connecting place of upper elbow arm and lower elbow arm, thereby make in production need not to stamp form to upper elbow arm and lower elbow arm, reduced processing procedure, reduced processing cost, and avoided the problem that the influence of using when stamping forming exists tolerance.

Description

Technical Field

[0001] This utility model relates to the field of door mechanism technology, specifically to a novel switch cabinet door mechanism. Background Technology

[0002] The valve mechanism in switchgear (especially medium-voltage armored withdrawable switchgear, such as the KYN28 series) is a classic and important mechanical interlocking and protective device. Its main function is to automatically close the contact sockets (valve) between the circuit breaker compartment and the busbar compartment / cable compartment when the trolley (circuit breaker) is moved out or tested, thereby preventing personnel from accidentally entering the energized compartment and ensuring operational safety; when the trolley is pushed into the working position, it can automatically and reliably open the valve to allow the moving and stationary contacts to connect smoothly.

[0003] For example, Chinese Patent Publication No. CN218040221U discloses a high-voltage switchgear door mechanism with simple structure, good stability, and positioning function. The technical solution adopted includes: a contact box mounting plate and an upper door and a lower door movably disposed on the contact box mounting plate. The upper door and the lower door are connected to a door drive mechanism at both ends. The door drive mechanism includes an integral bending mounting frame, a mounting shaft disposed on the integral bending mounting frame, and an upper crank arm and a lower crank arm rotatably mounted on the mounting shaft. A torsion spring is also provided on the mounting shaft. The first force arm of the torsion spring acts on the upper crank arm, and the second force arm is connected to the integral bending mounting frame.

[0004] In existing valve mechanisms such as those described in the aforementioned patent, the upper and lower crank arms are typically driven by torsion springs. Therefore, during production, the connection between the upper and lower crank arms needs to be stamped to allow space for the installation of the torsion springs. This results in more production processes and higher costs. Furthermore, due to tolerance issues during stamping, the forming accuracy of the upper and lower crank arms is prone to vary, affecting their usability.

[0005] Therefore, the applicant has made beneficial designs and found a way to solve the above problems. The technical solution to be introduced below is generated in this context. Utility Model Content

[0006] The present invention provides a novel switch cabinet door mechanism to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A novel switch cabinet door mechanism includes a bracket and an upper crank arm and a lower crank arm movably mounted on the bracket. Both the upper crank arm and the lower crank arm are flat plate structures. An intermediate shaft is provided on one side of the bracket. Both the upper crank arm and the lower crank arm are provided with connecting parts. The two connecting parts are stacked and rotatably connected to the intermediate shaft. A pull plate is provided at the rear of the upper crank arm. A pull rod is provided at the rear of the bracket. A tension spring is provided between the pull plate and the pull rod.

[0009] Preferably, a rotating seat is provided on one side of the rear part of both the upper and lower crank arms, and a bushing is rotatably mounted on each rotating seat.

[0010] Preferably, both the upper crank arm and the lower crank arm have reinforcing ribs on their surfaces.

[0011] Beneficial effects

[0012] The novel switchgear door mechanism provided in this utility model embodiment has at least one of the following technical effects:

[0013] This utility model, through the above-mentioned technical solution, replaces the torsion spring of the traditional valve mechanism with a tension spring, eliminating the need to reserve space for installing the torsion spring at the connection between the upper and lower crank arms. This eliminates the need for stamping the upper and lower crank arms during production, reducing processing steps, lowering processing costs, and avoiding the problem of tolerances affecting use during stamping. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the support structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the upper crank arm structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the lower crank arm structure of this utility model.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Bracket; 2. Upper crank arm; 3. Lower crank arm; 4. Intermediate shaft; 5. Connecting part; 6. Pull plate; 7. Pull rod; 8. Tension spring; 9. Rotating seat; 10. Bushing; 11. Reinforcing rib. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] To avoid excessive and unnecessary details, well-known structures or functions will not be described in detail in the following embodiments.

[0024] like Figure 1-4 As shown, it is a structural schematic diagram of a novel switch cabinet door mechanism according to a preferred embodiment of the present invention.

[0025] In this embodiment, the device includes a bracket 1 and an upper crank arm 2 and a lower crank arm 3 movably mounted on the bracket 1. Both the upper crank arm 2 and the lower crank arm 3 are flat plate structures. An intermediate shaft 4 is welded to one side of the bracket 1 and is perpendicular to the bracket. Both the upper crank arm 2 and the lower crank arm 3 are provided with connecting parts 5. The two connecting parts 5 are stacked and rotatably connected to the intermediate shaft 4. A pull plate 6 is integrally provided at the rear of the upper crank arm 2. A pull rod 7 is welded to the rear of the bracket 1 and is perpendicular to the bracket 1. A tension spring 8 is provided between the pull plate 6 and the pull rod 7. The tension spring 8 replaces the torsion spring of the traditional valve mechanism, so there is no need to reserve space for installing the torsion spring at the connection between the upper crank arm 2 and the lower crank arm 3. This eliminates the need for stamping the upper crank arm 2 and the lower crank arm 3 during production, reducing processing steps, lowering processing costs, and avoiding the problem of tolerances affecting use during stamping.

[0026] In this embodiment, a rotating seat 9 is welded to the side of the upper crank arm 2 and the lower crank arm 3 that is away from the bracket 1, and a bushing 10 is rotatably mounted on the rotating seat 9.

[0027] In this embodiment, both the upper crank arm 2 and the lower crank arm 3 are integrally provided with reinforcing ribs 11, which improve the strength of the upper crank arm 2 and the lower crank arm 3.

[0028] The novel switch cabinet door mechanism of this utility model has common mechanical methods in terms of installation, connection or setting. Any method that can achieve its beneficial effect can be implemented.

[0029] All technologies not described in detail in this utility model are known technologies. Those skilled in the art can easily implement this utility model based on their understanding of this specification, and the contents shown in the accompanying drawings are part of this specification.

[0030] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A novel switchgear door mechanism, comprising a bracket (1), and an upper crank arm (2) and a lower crank arm (3) movably mounted on the bracket (1), characterized in that: Both the upper crank arm (2) and the lower crank arm (3) are flat plate structures. The bracket (1) has an intermediate shaft (4) on one side. Both the upper crank arm (2) and the lower crank arm (3) have connecting parts (5). The two connecting parts (5) are stacked and rotatably connected to the intermediate shaft (4). The upper crank arm (2) has a pull plate (6) at the rear. The bracket (1) has a pull rod (7) at the rear. A tension spring (8) is provided between the pull plate (6) and the pull rod (7).

2. The novel switchgear door mechanism according to claim 1, characterized in that: The upper crank arm (2) and the lower crank arm (3) are each provided with a rotating seat (9) on one side of their rear end, and a bushing (10) is rotatably provided on the rotating seat (9).

3. The novel switchgear door mechanism according to claim 1, characterized in that: The upper crank arm (2) and the lower crank arm (3) are both provided with reinforcing ribs (11).

Images