CN219477439U

CN219477439U - Drawer type switch cabinet pushing mechanism

Info

Publication number: CN219477439U
Application number: CN202320553451.2U
Authority: CN
Inventors: 项赫男
Original assignee: Ruian Huatai Electrical Appliance Factory
Current assignee: Ruian Huatai Electrical Appliance Factory
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-08-04
Anticipated expiration: 2033-03-21

Abstract

A drawer type switch cabinet pushing mechanism is characterized in that: the drawer comprises a transmission screw rod arranged on a drawer bottom plate through a bracket, and a positioning piece which is arranged on a cabinet body layer plate and can be matched with the transmission screw rod to push the drawer to move back and forth, wherein an elastic buffer component is arranged between the transmission screw rod and the bracket. By adopting the scheme, the elastic buffer component is arranged between the driving screw and the support, and when the drawer is initially pushed, due to the weight of the drawer and the inertia of the forced pushing, after the driving screw and the positioning piece collide with each other with larger force, the elastic buffer component can effectively slow down the impact force, so that the fracture phenomenon caused by the mutual collision between the driving screw and the positioning piece is greatly reduced, the normal power supply use of the switch cabinet is ensured, and the service life is prolonged.

Description

Drawer type switch cabinet pushing mechanism

Technical Field

The utility model relates to low-voltage drawer type switch equipment, in particular to a drawer type switch cabinet pushing mechanism.

Background

In modern distribution network and engineering construction, drawer type low-voltage distribution cabinets are widely applied to distribution systems of power plants, power substations, factories and mining enterprises, high-rise buildings and other application occasions. Because of their special operating characteristics, the power distribution industry has stringent requirements for the design of power distribution cabinets.

In the national standard GB7251, it is prescribed that in a drawer type low-voltage power distribution cabinet, drawers of each circuit should be provided with an operating mechanism for pushing in and pulling out at three positions of connection, test and isolation. The mechanism can be freely pushed in and pulled out at the corresponding positions and the positions are self-locking.

For example, chinese patent (CN 101217229B) discloses a pushing mechanism for a drawer of a low-voltage drawer type switch cabinet, which comprises a screwing mechanism for pushing the drawer to move in the cabinet body, a transmission screw of the screwing mechanism and a slot-shaped positioning piece matched with the transmission screw, and the drawer can be driven to linearly move along the cabinet body by rotating the transmission screw.

In order to reduce the cost and facilitate the production and processing, the groove-shaped locating piece and the transmission screw are made of plastic materials under the normal condition, but the strength of the plastic materials is not high, and when the drawer is initially pushed, the transmission screw and the groove-shaped locating piece generate larger-force collision due to the weight of the drawer and the inertia of the forced pushing, so that the phenomenon of fracture is easy to occur. Particularly in extremely cold countries, plastics are impacted after being cooled, so that the problem of breakage is more likely to occur, and the normal power supply use of the switch cabinet is seriously affected.

Disclosure of Invention

In order to overcome the defects of the background technology, the utility model provides a drawer type switch cabinet pushing mechanism.

The utility model adopts the technical scheme that: the utility model provides a drawer type cubical switchboard advancing mechanism, includes the drive screw who passes through the support and install on the drawer bottom plate to and install on the cabinet body plywood and can with the setting element of drive screw adaptation promotion drawer back-and-forth movement, be equipped with elastic buffer assembly between drive screw and the support.

The support comprises a middle support plate and a rear support plate, the transmission screw is rotatably arranged between the middle support plate and the rear support plate, the front end of the transmission screw is provided with a connecting shaft penetrating through the middle support plate, the elastic buffer assembly is sleeved on the connecting shaft, two ends of the elastic buffer assembly respectively abut against the front end surfaces of the middle support plate and the transmission screw, and a backward elastic buffer force can be provided for the transmission screw.

The elastic buffer assembly comprises two metal gaskets and an elastic piece arranged between the two metal gaskets.

The elastic piece adopts a wavy elastic gasket.

The beneficial effects of the utility model are as follows: by adopting the scheme, the elastic buffer component is arranged between the driving screw and the support, and when the drawer is initially pushed, due to the weight of the drawer and the inertia of the forced pushing, after the driving screw and the positioning piece collide with each other with larger force, the elastic buffer component can effectively slow down the impact force, so that the fracture phenomenon caused by the mutual collision between the driving screw and the positioning piece is greatly reduced, the normal power supply use of the switch cabinet is ensured, and the service life is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a drawer type switchgear pushing mechanism according to an embodiment of the present utility model.

Fig. 2 is a schematic partial structural view of a drawer type switchgear pushing mechanism according to an embodiment of the present utility model.

FIG. 3 is a schematic view of an elastic pad according to an embodiment of the present utility model

Detailed Description

Embodiments of the utility model are further described below with reference to the accompanying drawings:

as shown in the figure, the drawer type switch cabinet pushing mechanism comprises a transmission screw 2 arranged on a drawer bottom plate through a bracket 1 and a positioning piece 3 arranged on a cabinet body layer plate, wherein an elastic buffer component 4 is further arranged between the transmission screw 2 and the bracket 1.

Wherein, the bracket 1 is formed by connecting a front support plate, a middle support plate 11 and a rear support plate 12 together through bolt fastening, thereby facilitating the assembly operation of the product.

The transmission screw 2 is rotatably arranged between the middle support plate 11 and the rear support plate 12, a connecting shaft 21 penetrating through the middle support plate 11 is arranged at the front end of the transmission screw 2, and an operation head 22 with an operation hole is arranged on the connecting shaft 21.

The positioning piece 3 can be a groove type positioning piece as shown in the figure, and is provided with a spiral groove matched with the transmission screw 2, and can be matched with the transmission screw through the spiral groove; the positioning element can also be a roller bearing positioning element as shown in patent CN109088346B, which is formed with a roller bearing adapted to the drive screw 2, through which roller bearing it can cooperate with the drive screw.

The elastic buffer component 4 is sleeved on the connecting shaft 21, and two ends of the elastic buffer component 4 respectively prop against the front end surfaces of the middle support plate 11 and the driving screw 2, so that a backward elastic buffer force can be provided for the driving screw 2. The elastic buffer assembly 4 includes two metal gaskets 41 and an elastic member 42 disposed between the two metal gaskets 41, where the elastic member 42 may be an elastic gasket or a spring. Because the installation space of the elastic buffer assembly 4 is small, the elastic member 42 is preferably an elastic pad which is waved as shown in the figure, and the elastic pad not only can provide enough elastic buffer force, but also has a more stable structure.

When the drawer needs to be opened, the operation head 22 is rotated by a tool, the operation head 22 can drive the transmission screw 2 to synchronously rotate, the transmission screw 2 is matched with the positioning piece 3 to push the drawer to move relative to the cabinet body, and when the drawer moves to the extraction position, the transmission screw 2 can be separated from the positioning piece 3, and at the moment, the whole drawer can be directly pulled out and opened manually.

When the drawer needs to be closed, the drawer is pushed into the cabinet body until the driving screw 2 is contacted with the positioning piece 3, then the operation head 22 is rotated by a tool, the operation head 22 can drive the driving screw 2 to synchronously rotate, and the driving screw 2 is matched with the positioning piece 3 to push the drawer to move relative to the cabinet body, so that the drawer enters a position required by connection, test, isolation and the like.

Due to the fact that the elastic buffer component is arranged between the transmission screw and the support, when the drawer is initially pushed, due to the fact that the weight of the drawer is added with inertia pushed by stress, after the transmission screw collides with the locating piece with large force, the impact force can be effectively relieved by the elastic buffer component, so that the fracture phenomenon caused by the mutual collision between the transmission screw and the locating piece is greatly reduced, normal power supply use of the switch cabinet is guaranteed, and the service life is prolonged.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on those shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the mechanism or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The skilled person will know: while the utility model has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the utility model, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.

Claims

1. A drawer type switch cabinet pushing mechanism is characterized in that: the drawer comprises a transmission screw (2) arranged on a drawer bottom plate through a bracket (1), and a positioning piece (3) which is arranged on a cabinet body layer plate and can be matched with the transmission screw (2) to push the drawer to move back and forth, wherein an elastic buffer component (4) is arranged between the transmission screw (2) and the bracket (1).

2. The drawer-type switchgear propulsion mechanism of claim 1, wherein: the support (1) comprises a middle support plate (11) and a rear support plate (12), the transmission screw (2) is rotatably arranged between the middle support plate (11) and the rear support plate (12), a connecting shaft (21) penetrating through the middle support plate (11) is arranged at the front end of the transmission screw (2), the elastic buffer assembly (4) is sleeved on the connecting shaft (21), and two ends of the elastic buffer assembly (4) respectively abut against the front end surfaces of the middle support plate (11) and the transmission screw (2), so that a backward elastic buffer force can be provided for the transmission screw (2).

3. The drawer-type switchgear propulsion mechanism of claim 2, wherein: the elastic buffer assembly (4) comprises two metal gaskets (41) and an elastic piece (42) arranged between the two metal gaskets (41).

4. A drawer-type switchgear propulsion mechanism as claimed in claim 3, wherein: the elastic piece (42) adopts a wavy elastic gasket.