Intelligent anti-pinch structure for rail transit vehicle door
By installing column-type infrared sensors and hydraulic cylinder-driven inner door structures on rail transit vehicle doors, the problems of sensor damage and maintenance difficulties have been solved, ensuring passenger safety and normal door operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG JINONE TECH CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-19
AI Technical Summary
The sensors on existing rail transit doors are easily damaged and difficult to maintain, affecting the normal use of the doors and increasing the risk of passengers being pinched.
An infrared sensor is mounted on a support column, and the inner door is driven by a hydraulic cylinder in conjunction with a buffer spring. When a passenger is detected, the inner door retracts into the receiving cavity to ensure safety.
The sensor replacement does not affect the normal operation of the door, and the inner door automatically retracts when it traps a passenger, improving passenger safety and door reliability.
Smart Images
Figure CN224260134U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safety equipment technology for rail transit vehicles, specifically to an intelligent anti-pinch structure for rail transit vehicle doors. Background Technology
[0002] Subway is a form of rail transport, referring to urban rail transit systems that mainly operate underground. It is an abbreviation of "underground railway" or "subway". In order to adapt to the construction environment and consider construction and operation costs, many such systems will be converted to ground or elevated sections outside the city center. Rail transit requires the use of special double doors.
[0003] Existing rail transit doors use sensors on the side to detect passengers and prevent them from getting caught. However, when the sensors are damaged, they become ineffective. Furthermore, the sensors are difficult to maintain because they are located on the side of the door, and maintenance can affect the use of the door.
[0004] Therefore, it is necessary to propose an intelligent anti-pinch structure for rail transit vehicle doors to solve the above problems. Summary of the Invention
[0005] The purpose of this utility model is to provide an intelligent anti-pinch structure for rail transit vehicle doors to solve the above-mentioned technical problems.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An intelligent anti-pinch structure for rail transit vehicle doors includes a positioning frame and an outer door body disposed on one side of the positioning frame. A receiving cavity is formed within the outer door body, and an inner door body is disposed within the receiving cavity. A mounting column is disposed between the positioning frame and the outer door body. The width of the mounting column is greater than the width of the positioning frame. Infrared sensors are installed at multiple points along the width for detecting passengers. A hydraulic cylinder is disposed within the positioning frame, and the output end of the hydraulic cylinder is connected to the outer door body to drive the outer and inner door bodies to move. The inner door body slides within the receiving cavity. A buffer spring is disposed between the inner surface of the inner door body and the inner surface of the outer door body. The inner door bodies are positioned opposite each other, and the opposing surfaces between them are covered with a rubber layer.
[0008] The present invention further provides that rollers or roller shafts are distributed on both sides of the receiving cavity, and the rotation direction of the rollers or roller shafts is tangent to the movement direction of the inner door body.
[0009] The present invention further includes a spring seat on the inner side of the outer body for accommodating a buffer spring.
[0010] The beneficial effects of this invention are as follows: By setting up an installation column, the infrared sensor is mounted on the installation column, placing the detection function on the installation column, which ensures that the normal operation of the door is not affected when the sensor is replaced; secondly, an inner door body is provided. When a passenger or obstacle is trapped, the inner door body retracts into the receiving cavity under the action of a buffer spring. When the door is closed, the inner door bodies are squeezed together and retracted into the receiving cavity; when opening, the inner door body slowly extends out of the receiving cavity under the action of a buffer spring and rollers or wheels; the above structure ensures the safety of passengers. Attached Figure Description
[0011] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0012] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.
[0013] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present utility model.
[0014] Figure 3 This is a schematic diagram of the interior of the outer door body in an embodiment of this utility model.
[0015] Reference numerals: 10, positioning frame; 20, outer door body; 30, inner door body; 40, receiving cavity; 50, mounting column; 60, hydraulic cylinder; 70, platform; 80, buffer spring; 90, spring seat; 100, roller; 110, rubber layer; Detailed Implementation
[0016] The following will describe in detail the implementation of this application with reference to the accompanying drawings and 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.
[0017] like Figure 1-3As shown, this utility model is an intelligent anti-pinch structure for rail transit vehicle doors, including a positioning frame 10 and an outer door body 20 disposed on one side of the positioning frame 10. The outer door body 20 has a receiving cavity 40, and an inner door body 30 is disposed in the receiving cavity 40. An installation column 50 is disposed between the positioning frame 10 and the outer door body 20. The width of the installation column 50 is greater than the width of the positioning frame 10. Infrared sensors are disposed in multiple width portions for detecting passengers. A hydraulic cylinder 60 is disposed in the positioning frame 10 and is disposed on a platform 70 formed in the positioning frame 10. The output end of the hydraulic cylinder 60 is connected to the outer door body 20 to drive the outer door body 20 and the inner door body 30 to move. The inner door body 30 slides in the receiving cavity 40. A buffer spring 80 is disposed between the inner side of the inner door body 30 and the inner side of the outer door body 20. The inner door bodies 30 are disposed opposite each other, and the opposing surfaces between them are covered with a rubber layer 110.
[0018] In this utility model, such as Figure 3 As shown, rollers or rollers 100 are distributed on both sides of the receiving cavity 40, and the rotation direction of the rollers or rollers 100 is tangent to the movement direction of the inner door body 30; a spring seat 90 is provided on the inner side of the outer body for accommodating the buffer spring 80.
[0019] In this invention, by setting up an installation column 50, the infrared sensor is mounted on the installation column 50, and the detection function is placed on the installation column 50, so that the normal operation of the door is not affected when the sensor is replaced. Secondly, an inner door body 30 is set up. When a passenger or obstacle is trapped, the inner door body 30 retracts into the receiving cavity 40 under the action of the buffer spring 80. When the door is closed, the inner door bodies 30 are squeezed together and retracted into the receiving cavity 40. When opening, the inner door body 30 slowly extends out of the receiving cavity 40 under the action of the buffer spring 80 and the roller 100 or roller. The above structure ensures the safety of passengers.
[0020] 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.
[0021] 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.
[0022] 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 smart anti-pinch structure for a rail transit vehicle door, characterized in that, The device includes a positioning frame and an outer door body disposed on one side of the positioning frame. A receiving cavity is formed inside the outer door body, and an inner door body is disposed within the receiving cavity. A mounting column is disposed between the positioning frame and the outer door body. The width of the mounting column is greater than the width of the positioning frame. Infrared sensors are disposed in multiple width sections for detecting passengers. A hydraulic cylinder is disposed within the positioning frame. The output end of the hydraulic cylinder is connected to the outer door body to drive the outer door body and the inner door body to move. The inner door body slides within the receiving cavity. A buffer spring is disposed between the inner surface of the inner door body and the inner surface of the outer door body. The inner door bodies are disposed opposite each other, and the opposing surfaces between them are covered with a rubber layer.
2. The intelligent anti-pinch structure for a rail transit vehicle door according to claim 1, characterized in that, Rollers or rollers are distributed on both sides of the receiving cavity, and the rotation direction of the rollers or rollers is tangent to the movement direction of the inner door.
3. The intelligent anti-pinch structure for a rail transit vehicle door according to claim 1, characterized in that, A spring seat is provided on the inner side of the outer door to house the buffer spring.