Stable-operation driving device for rail transit vehicle door

Abstract

The utility model relates to a driving device capable of running stably for a rail transit vehicle door, which comprises a supporting plate, a mounting table is arranged on the supporting plate, a driving motor and a moving plate are arranged on the mounting table, a ball screw is arranged on an output shaft of the driving motor, the moving plate is arranged on a sliding piece of the ball screw, and the moving plate is arranged on the sliding piece of the ball screw. The movable plate is used for being connected with the top of a vehicle door, a bearing seat is arranged in the length direction of the ball screw, a bearing is arranged in the bearing seat, a first check ring and a second check ring are arranged on the two sides of the bearing, and the first check ring and the second check ring are arranged on the two sides of the bearing in a sleeving mode. And the first check ring and the second check ring are fixed in the bearing seat through snap springs. A single vehicle door is achieved through the ball screw, and the situation that when the ball screw fails, the vehicle door cannot be driven is avoided; and the first check ring and the second check ring are arranged in the bearing seat and are matched with the snap spring to realize stable transmission.

Description

Technical Field

[0001] This utility model relates to the field of rail transit vehicle door technology, specifically to a stable driving device for rail transit vehicle doors. Background Technology

[0002] Existing rail transit vehicle door drive devices mostly use gear rack or ball screw transmission, which have the following drawbacks: gear meshing is prone to vibration, and long-term use leads to tooth surface wear; and their stability needs to be improved; in the existing technology, ball screws are all used in a way that uses a single ball screw with opposite threads to drive two doors. In this case, when the ball screw malfunctions, both doors will fail. Summary of the Invention

[0003] The purpose of this invention is to provide a stable driving device for rail transit vehicle doors to solve the above-mentioned problems.

[0004] A stable driving device for rail transit vehicle doors is characterized by comprising a support plate, a mounting platform on the support plate, a drive motor and a movable plate on the mounting platform, a ball screw on the output shaft of the drive motor, a movable plate on the sliding part of the ball screw, the movable plate being used to connect to the top of the vehicle door, a bearing seat on the length direction of the ball screw, a bearing being disposed within the bearing seat, and a first retaining ring and a second retaining ring on both sides of the bearing, the first retaining ring and the second retaining ring being sleeved on both sides of the bearing, and the first retaining ring and the second retaining ring being fixed within the bearing seat by snap rings.

[0005] The present invention further includes a movable plate comprising a horizontal plate and vertical plates disposed on both sides of the horizontal plate. The vertical plates include a first vertical plate and a second vertical plate. The first vertical plate and the second vertical plate are connected by a slider. The slider is adapted to a slide rail. The slide rail is disposed on the side of the mounting platform. When the drive motor drives the movable plate to move, the first vertical plate and the second vertical plate move along the setting direction of the slide rail.

[0006] The present invention further includes L-shaped mounting plates at both ends of the slide rail, and anti-collision bars on the L-shaped mounting plates for limiting the first vertical plate and the second vertical plate. When the moving plate moves to the limit position of the slide rail, the first vertical plate or the second vertical plate contacts the anti-collision bars to achieve mechanical limiting.

[0007] The beneficial effects of this utility model are as follows: This utility model addresses the issue of a single car door being driven by a ball screw, thus avoiding the situation where the car door cannot be driven when the ball screw fails; and the structure of a first retaining ring and a second retaining ring in the bearing housing, in conjunction with a snap ring, achieves stable transmission; at the same time, the structure of a slide rail and a slider on the side ensures the stability of the moving plate during movement. Attached Figure Description

[0008] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0009] Figure 2 This is a side view of an embodiment of the present utility model.

[0010] Reference numerals: 10, support plate; 20, mounting platform; 30, drive motor; 40, ball screw; 50, moving plate; 501, horizontal plate; 502, first vertical plate; 503, second vertical plate; 60, bearing; 70, retaining ring; 80, snap ring; 90, slider; 100, slide rail; 110, L-shaped mounting plate; 120, anti-collision bar; Detailed Implementation

[0011] The following will describe the implementation of this application in detail with reference to the embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0012] like Figure 1-2 As shown, this utility model is a stable driving device for rail transit vehicle doors, including a support plate 10, a mounting platform 20 on the support plate 10, a drive motor 30 and a moving plate 50 on the mounting platform 20, a ball screw on the output shaft of the drive motor 30, and the moving plate 50 on the sliding part of the ball screw. The moving plate 50 is used to connect to the top of the door. A bearing seat is provided along the length of the ball screw 40, and a bearing 60 is provided inside the bearing seat. A first retaining ring 70 and a second retaining ring 70 are provided on both sides of the bearing 60. The first retaining ring 70 and the second retaining ring 70 are sleeved on both sides of the bearing 60 and fixed in the bearing seat by a retaining spring 80.

[0013] The movable plate 50 includes a horizontal plate 501 and vertical plates disposed on both sides of the horizontal plate 501. The vertical plates include a first vertical plate 502 and a second vertical plate 503. The first vertical plate 502 and the second vertical plate 503 are connected to a slider 90. The slider 90 is adapted to a slide rail 100. The slide rail 100 is disposed on the side of the mounting platform 20. When the drive motor 30 drives the movable plate 50 to move, the first vertical plate 502 and the second vertical plate 503 move along the setting direction of the slide rail 100.

[0014] The slide rail 100 is provided with L-shaped mounting plates 110 at both ends. The L-shaped mounting plates 110 are provided with anti-collision rods 120 for limiting the first vertical plate 502 and the second vertical plate 503. When the moving plate 50 moves to the limit position of the slide rail 100, the first vertical plate 502 or the second vertical plate 503 contacts the anti-collision rods 120 to achieve mechanical limiting.

[0015] The beneficial effects of this utility model are as follows: This utility model uses a ball screw 40 to achieve a single car door, avoiding the situation where the car door cannot be driven when the ball screw 40 fails; and the structure of setting a first retaining ring 70 and a second retaining ring 70 in the bearing seat in conjunction with the snap ring 80 achieves stable transmission; at the same time, the structure of setting a slide rail 100 and a slider 90 on the side ensures the stability of the moving plate 50 during the movement process.

[0016] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0017] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0018] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept by means of the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A stable driving device for rail transit vehicle doors, characterized in that, The device includes a support plate, a mounting platform on the support plate, a drive motor and a movable plate on the mounting platform, a ball screw on the output shaft of the drive motor, a movable plate on the sliding part of the ball screw, the movable plate being used to connect to the top of the car door, a bearing seat on the length direction of the ball screw, a bearing inside the bearing seat, a first retaining ring and a second retaining ring on both sides of the bearing, the first retaining ring and the second retaining ring being fitted onto both sides of the bearing, and the first retaining ring and the second retaining ring being fixed in the bearing seat by snap rings.

2. The stable driving device for rail transit vehicle doors according to claim 1, characterized in that, The movable plate includes a horizontal plate and vertical plates disposed on both sides of the horizontal plate. The vertical plates include a first vertical plate and a second vertical plate. The first vertical plate and the second vertical plate are connected by a slider. The slider is adapted to a slide rail. The slide rail is disposed on the side of the mounting platform. When the drive motor drives the movable plate to move, the first vertical plate and the second vertical plate move along the setting direction of the slide rail.

3. The stable driving device for rail transit vehicle doors according to claim 2, characterized in that, The slide rail is provided with L-shaped mounting plates at both ends, and anti-collision bars are provided on the L-shaped mounting plates to limit the first vertical plate and the second vertical plate. When the moving plate moves to the limit position of the slide rail, the first vertical plate or the second vertical plate contacts the anti-collision bar to achieve mechanical limiting.

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