Limiting device for door leaf of passenger room door of railway vehicle

Abstract

The utility model discloses a limiting device for a door leaf of a passenger room door of a railway vehicle, which comprises a buffer head embedded part, a rubber head, a balance wheel supporting plate and a balance wheel, the buffer head embedded part is connected with a supporting arm on a door carrying frame of the door leaf of the passenger room door of the railway vehicle through a thread structure, and the rubber head is wrapped on the buffer head embedded part in an interference mode. And the balance wheel is fixed on the railway vehicle. The limiting device solves the interference problem generated in the movement process of the buffer head, the accuracy of the limiting device is guaranteed, and the exposed space and cost of a vehicle body can be saved.

Description

Technical Field

[0001] The utility model relates to rail transportation, in particular to a limiting device for a door leaf of a passenger compartment of a rail vehicle. Background Art

[0002] As the main limiting component of the passenger door leaf of a rail vehicle, the buffer head can limit the maximum opening of the door and prevent the door from opening too wide. Usually, the buffer head of the passenger door leaf of the vehicle is installed on the support arms of the left and right door carriers. When the door is opened, the buffer head moves with the door carrier. When the buffer head reaches the door frame, the door is in the maximum opening state and stops opening. With the development of the rail vehicle industry, in order to standardize the vehicle, the main engine manufacturer will use the same size of door frame to cover door systems with different openings. When the door frame width of the vehicle body is much larger than the maximum opening of the passenger door leaf of the vehicle, in order to make the buffer head installed on the support arm contact the door frame surface, it is necessary to lengthen the length of the buffer head or add a limit block to the door frame. However, the lengthening of the buffer head will greatly reduce the limit accuracy and the strength of the buffer head itself. In addition, in some special vehicle bodies, the limited exposed space of the vehicle does not meet the conditions for adding a limit block. At the same time, it will also cause the buffer head to interfere with the balance wheel assembly during the opening / closing process of the door leaf.

[0003] Therefore, it is necessary to develop a limit device for the passenger door leaf of a rail vehicle to solve the interference problem caused by the movement of the buffer head. Utility Model Content

[0004] Purpose of the utility model: In view of the shortcomings and defects of the prior art, the utility model provides a limiting device for a rail vehicle passenger compartment door leaf to solve the interference problem generated during the movement of the buffer head, thereby ensuring the accuracy of the limiting device and saving the exposed space and cost of the vehicle body.

[0005] Technical solution: The utility model is a limiting device for a rail vehicle passenger compartment door leaf, characterized in that it includes a buffer head embedded part, a rubber head, a balance wheel support plate and a balance wheel. The buffer head embedded part is connected to the support arm on the rail vehicle passenger compartment door leaf carrying frame through a threaded structure, the rubber head is interference wrapped on the buffer head embedded part, and the balance wheel is fixed to the rail vehicle.

[0006] Wherein, the balance wheel is connected to the balance wheel support plate.

[0007] Wherein, the balance wheel is connected to the rail vehicle via screws.

[0008] Wherein, the buffer head embedded part and the rubber head constitute a buffer head assembly.

[0009] Wherein, the balance wheel support plate and the balance wheel form a balance wheel assembly.

[0010] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: the limiting device of the utility model can be applied to the passenger door system in which the width of the vehicle door frame is much larger than the door leaf opening, avoiding the poor limiting effect caused by the lengthening of the buffer head, the increased difficulty of assembly due to the additional limiting blocks, etc., reducing the door leaf assembly time and design costs, and saving a lot of vehicle body space.

[0011] In addition, the limit device sets the limit end face on the balance wheel support plate, and only needs to add a positioning feature on the balance wheel bracket to flexibly realize the door opening positioning function of various door leaf openings. The process is simple, the connection is reliable, and it is easy to produce, which effectively ensures the accuracy of the door leaf limit device. At the same time, the balance wheel provides a new fixed support point for the door leaf, which enhances the stability of the door leaf after closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 3 This is a schematic diagram of the installation of the limit device of the utility model on the vehicle body;

[0015] Figure 4 This is a schematic diagram of the limit device of the utility model when the door leaf is fully opened;

[0016] Figure 5 This is a schematic diagram of the fixed support points of the door leaf after closing of the utility model;

[0017] In the figure, 1 is the buffer head embedded part; 2 is the rubber head; 3 is the balance wheel support plate; and 4 is the balance wheel. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0019] When the door frame width is much larger than the actual opening, according to the existing limit device, the movement of the buffer head will interfere with the balance wheel assembly and thus fail to achieve the limit function. The distance between the left and right balance wheel support plates is closest to the maximum opening of the vehicle door. The utility model sets the limit end point on the balance wheel support plate, solving the interference problem generated during the movement of the buffer head. The buffer head reaches the balance wheel support plate as one of the limit device components of the vehicle passenger door leaf, and the existing components replace the limit block that needs to be added extra, which not only ensures the accuracy of the limit device, but also saves the exposed space and cost of the vehicle body.

[0020] In addition, taking the left door leaf as an example, the existing fixed points after the door leaf is closed are the lower swing arm at the lower left and the door carrying frame at the upper right. The door leaf cannot maintain a stable closed position relying on only two fixed points. The balance wheel assembly of the limit device provides a new fixed support point for the door leaf. After the door leaf is closed, the balance wheel provides a downward force to the door leaf, which can effectively ensure the stability of the closed state of the door leaf.

[0021] The utility model is mainly composed of a buffer head assembly and a balance wheel assembly;

[0022] The buffer head assembly consists of a buffer head embedded part and a rubber head. The buffer head embedded part is connected to the support arm on the door leaf carrier by a threaded connection. The rubber head is wrapped around the buffer head embedded part to protect the surface of the limit end parts from scratches. The buffer head assembly connected to the door leaf carrier of the passenger room door moves as the door leaf opens.

[0023] The balance wheel assembly is fixed to the vehicle body by screw connection, and is mainly composed of a balance wheel support plate, a balance wheel, etc. The balance wheel support plate is used as a limit block, replacing the traditional door frame pressure strip limit. The position of the limit end surface on the balance wheel support plate is determined according to the maximum opening of the door leaf.

[0024] When in use, the buffer head fixed on the door carrier moves with the door leaf during the opening process of the passenger compartment door of the rail vehicle. When the buffer head reaches the limit end face on the balance wheel support plate, the door leaf stops opening after being restricted, realizing the limit function under the condition that the width of the vehicle door frame is much larger than the door opening. After the door leaf is closed, the balance wheel assembly provides a downward pressing force to press the door leaf, so that the door is in a stable closed state.

[0025] like Figure 4 When the door leaf is opened to the right position, the buffer head (buffer head embedded parts and rubber head) on the door frame reaches the limit end surface of the balance wheel support plate, the door leaf stops opening, and the limit is completed.

[0026] like Figure 5 The door leaf originally has two fixed support points: the lower swing arm of the vehicle body and the door frame. When the door leaf is closed, the balance wheel provides a downward force to press the door leaf. Under the action of the torque, the door leaf generates a new fixed support point, thus achieving a stable closed state.

Claims

1. A limiting device for a passenger door leaf of a rail vehicle, characterized in that: The invention comprises a buffer head embedded part (1), a rubber head (2), a balancing wheel support plate (3) and a balancing wheel (4); the buffer head embedded part (1) is connected to a support arm on a door leaf and door frame of a passenger compartment door of a rail vehicle via a threaded structure; the rubber head (2) is interference wrapped around the buffer head embedded part (1); and the balancing wheel (4) is fixed on the rail vehicle.

2. The limiting device for a rail vehicle passenger compartment door leaf according to claim 1, characterized in that: The balancing wheel (4) is connected to the balancing wheel support plate (3).

3. The position limiting device for a rail vehicle passenger compartment door leaf according to claim 1, characterized in that: The balancing wheel (4) is connected to the rail vehicle via screws.

4. The limiting device for a rail vehicle passenger compartment door leaf according to claim 1, characterized in that: The buffer head embedded part (1) and the rubber head (2) constitute a buffer head assembly.

5. The position limiting device for a rail vehicle passenger compartment door leaf according to claim 1, characterized in that: The balancing wheel support plate (3) and the balancing wheel (4) form a balancing wheel assembly.

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