CN217501364U

CN217501364U - Bolt device for railway vehicle cabin door

Info

Publication number: CN217501364U
Application number: CN202221214995.8U
Authority: CN
Inventors: 姜俊; 徐军伟; 郑春晓; 邹纯鹏
Original assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Current assignee: Hunan Lince Rolling Stock Equipment Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-27
Anticipated expiration: 2032-05-20

Abstract

The utility model belongs to the technical field of rail vehicle, specifically disclose a bolt device for rail vehicle hatch door. The bolt assembly comprises a first bolt assembly, wherein the first bolt assembly comprises a cylindrical bolt seat, an L-shaped guide rail, a first fixed seat and a second fixed seat, and the L-shaped guide rail comprises a first guide rail part and a second guide rail part; and the second bolt component comprises a pin shaft and a limiting shaft. Wherein the spacing shaft is configured to extend the pin shaft out of the pin socket when at the end of the first track section and to retract the pin shaft into the pin socket when at the end of the second track section. The utility model discloses can satisfy rail vehicle's high reliability, high stability's requirement. Furthermore, the utility model relates to a novelty, simple structure, small and exquisite, the convenient operation of appearance and safe and reliable to the difficult pine of in-process at work takes off, thereby reduces the possibility that takes place the incident.

Description

Bolt device for railway vehicle cabin door

Technical Field

The utility model relates to a rail vehicle technical field specifically relates to a bolt device for rail vehicle hatch door.

Background

In recent years, with the rapid development of the rail transit industry, the total mileage of rail transit is continuously rising. As a result, demand for rail vehicles is also increasing. Among them, the increase of motor cars and urban rail vehicles is particularly remarkable. The bolt is a commonly used auxiliary device in the rail vehicle, and is mainly used for protecting various doors. However, in the actual operation process, the bolt is often loosened due to the vibration of the vehicle, so that safety accidents are easily caused.

However, there is still no device in the prior art that can solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bolt device for rail vehicle hatch door, its requirement that can satisfy rail vehicle's high reliability, high stability. When the device is in an opening state, the spring is in a free state, and the pin shaft extends out of the pin seat under the supporting action of the spring; when the device is in a closed state, the spring is in a compressed state, the limiting shaft is clamped with the second track part, and the pin shaft is retracted into the pin seat. Furthermore, the utility model relates to a novelty, simple structure, small and exquisite, the convenient operation of appearance and safe and reliable to the difficult pine of in-process at work takes off, thereby reduces the possibility that takes place the incident.

According to the present invention, there is provided a latch device for a rail vehicle hatch, comprising a first latch assembly including a cylindrical latch socket, an L-shaped guide rail provided on an outer wall of the latch socket, and a first fixing seat and a second fixing seat extending outwardly from both ends of the latch socket, wherein the L-shaped guide rail includes a longer first guide rail portion extending in an axial direction, and a shorter second guide rail portion connected to the first guide rail portion; and a second pin assembly including a pin shaft extending axially through the pin housing, and a spacing shaft extending radially from the pin shaft and extending through the pin housing through the L-shaped guide track, wherein the spacing shaft is configured to extend the pin shaft out of the pin housing when at the end of the first track portion and retract the pin shaft into the pin housing when at the end of the second track portion.

In one embodiment, the pin shaft comprises a first connecting shaft with a larger diameter and a second connecting shaft with a smaller diameter, wherein a first step is formed at the joint of the first connecting shaft and the second connecting shaft.

In one embodiment, a second step extending radially inwards is arranged on the inner surface of the pin seat, and the outer surface of the second connecting shaft abuts against the circumferential inner surface of the second step.

In one embodiment, a spring is sleeved on the outer periphery of the second connecting shaft, a first end of the spring abuts against the first step, a second end of the spring abuts against the second step, and the spring is configured to be in a natural state when the limiting shaft is located at the end of the first guide rail part and in a compressed state when the limiting shaft is located at the end of the second guide rail part.

In one embodiment, the pin shaft comprises a second through hole, and the second through hole is in threaded connection with the connecting end of the limiting shaft.

In one embodiment, the extending direction of the first rail portion forms an angle of 10 ° with the central axis of the latch base.

In one embodiment, the end of the second rail portion is formed as an arc-shaped stopper.

In one embodiment, the first fixing seat and the second fixing seat are symmetrically distributed, and both are provided with counter bores connected with a fixing structure through screws.

In one embodiment, the first latch assembly is configured as a butterfly configuration.

In one embodiment, the first plug pin assembly is made in a cast manner.

Drawings

The invention will be described in detail below with reference to the attached drawings, in which:

figure 1 schematically shows the structure of a latch device for a door of a rail vehicle according to the invention.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 schematically shows the structure of a latch device 100 for a rail vehicle door according to the present invention. As shown in fig. 1, a latch device 100 for a railway vehicle hatch according to the present invention mainly includes a first latch assembly 10 and a second latch assembly 30. Wherein the first plug pin assembly 10 can be mounted on a fixed structure by means of screws. The second bolt assembly 30 can extend through the first bolt assembly 10 along the axial direction, and can further realize the opening and closing of the cabin door under the combined action of the first bolt assembly 10 and the second bolt assembly. The contents of which are described in more detail below. According to an embodiment of the invention, the fixed structure refers to a door or a door frame for mounting the door.

According to one embodiment of the present invention, the first plug pin assembly 10 is made in a cast manner. In this way, on the one hand, the production speed of the first plug pin assembly 10 can be increased, and on the other hand, the production costs of the first plug pin assembly 10 can be effectively reduced. In addition, the first plug pin assembly 10 is more reliable and more versatile.

According to the present invention, as shown in fig. 1, the first latch assembly 10 is constructed in a butterfly structure and includes a latch base 11, a first fixing base 12, and a second fixing base 13. Wherein the pin socket 11 is constructed in a hollow cylindrical structure, and the inside thereof can accommodate the second pin assembly 30 as described above. The first fixed abutment 12 extends radially outwards from a first end of the plug abutment 11 for fixed connection with a fixed structure as described above. A second fixed abutment 13 extends radially outwards from the second end of the pin abutment 11 for fixed connection with a fixed structure as described above. According to an embodiment of the present invention, the first fixing seat 12 and the second fixing seat 13 are symmetrically distributed. In this way, the latch device 100 for a railway vehicle hatch can be more easily mounted on a fixed structure.

According to the present invention, as shown in fig. 1, the first latch assembly 10 further includes an L-shaped guide rail 20. An L-shaped guide rail 20 is provided on the outer wall of the latch housing 11 and comprises a first rail part 21 and a second rail part 22. Wherein, the longer first guide rail part 21 extends and distributes along the axial direction; the shorter second rail portion 22 communicates with the first rail portion 21. This facilitates the reciprocal movement of the stopper shaft 32 (described below) between the first rail portion 21 and the second rail portion 22.

According to the present invention, as shown in fig. 1, the second latch assembly 30 includes a pin 31 and a limiting shaft 32. Wherein the pin 31 can extend axially through the pin receptacle 11. The stopper shaft 32 radially protrudes from the pin 31, and the stopper shaft 32 can extend through the pin holder 11 through the L-shaped guide rail 20. Thus, when the limiting shaft 32 reciprocates between the first rail portion 21 and the second rail portion 22, the pin 31 can reciprocate axially in the pin seat 11 at the same frequency (that is, the moving frequency of the pin 31 is the same as that of the limiting shaft 32) under the driving action of the limiting shaft 32.

According to an embodiment of the present invention, when the limiting shaft 32 moves towards the end of the first rail portion 21, the pin 31 extends out of the pin seat 11 under the driving action of the limiting shaft 32. When the limiting shaft 32 moves towards the end of the second guide rail part 22, the pin 31 retracts into the pin seat 11 under the driving action of the limiting shaft 32. It is easy to understand that when the pin 31 extends out of the pin seat 11 under the driving action of the limiting shaft 32, the door is closed and cannot be opened. When the pin 31 is retracted into the pin seat 11 under the driving action of the limiting shaft 32, the cabin door can be opened.

According to one embodiment of the present invention, the end of the second rail portion 22 is formed as an arc-shaped stopper. Thus, when the limiting shaft 32 is located at the tail end of the second guide rail part 22, a firmer clamping effect can be formed with the arc-shaped limiting end, so that the phenomenon that the vehicle is loosened due to vibration is effectively avoided, and the safety of the life of people and public property is further guaranteed.

According to an embodiment of the present invention, as shown in fig. 1, a spring 33 is sleeved on the outer periphery of the second connecting shaft 312. When the stopper shaft 32 moves to the end of the first rail portion 21, the spring 33 is in a free state. Thus, the pin 31 can stably extend out of the pin seat 11 under the pushing action of the spring 33, and the hatch door is in a closed state under the action of the pin 31. When the stopper shaft 32 moves to the end of the second track portion 22, the spring 33 is in a compressed state. In this way, the pin 31 can overcome the elastic force of the spring 33 under the action of the limiting shaft 32, so as to be retracted in the pin seat 11. In addition, the pin 31 can be more stably retracted in the pin seat 11 due to the firm engagement between the limiting shaft 32 and the arc limiting end.

According to the present invention, as shown in fig. 1, the pin 31 includes a first connecting shaft 311 and a second connecting shaft 312. The first connecting shaft 311 has a larger diameter, and the second connecting shaft 312 has a smaller diameter. Thereby, a first step (not shown in fig. 1) is formed at a junction of the first connection shaft 311 and the second connection shaft 312.

The first step abuts a first end of the spring 33 for limiting the path of movement of the spring 33 during deformation. According to an embodiment of the invention, a second step (not shown in fig. 1) is provided on the inner surface of the pin holder 11, extending radially inwards. The circumferential inner surface of the second step abuts against the outer surface of the second connecting shaft 312, whereby the second connecting shaft 312 can move in the axial direction under the restriction of the second step. The second step abuts a second end of the spring 33 for limiting the path of movement of the spring 33 during deformation. Thereby, the spring 33 can be compressed and released between the first step and the second step, thereby effectively avoiding the spring 33 from being separated from the control of the pin 31 and the pin seat 11 during the operation.

According to an embodiment of the present invention, the pin 31 comprises a second through hole (not shown in fig. 1). The second through hole is internally threaded by machining. The connecting end of the stopper shaft 32 is externally threaded by machining. Thus, the snag axis 32 forms a threaded connection with the second through-hole, thereby improving stability of the latch device 100 for a railway vehicle hatch door during use.

According to an embodiment of the invention the first guide track portion 21 extends in a direction forming an angle of 10 ° with the centre axis of the pin base 11 of the cylinder. Therefore, on one hand, the limiting shaft 32 can smoothly slide in the first guide rail part 21 to realize the control function on the pin shaft 31, and further realize the opening and closing of the cabin door. On the other hand, the stopper shaft 32 can be moved more easily from the first rail portion 21 into the second rail portion 22, thereby forming a firm engagement with the arc-shaped stopper end as described above.

In an embodiment of the present invention, the first fixing seat 12 and the second fixing seat 13 are both provided with counter bores 14 symmetrically distributed. The counterbores 14 are each connected to a fixed structure by screws (not shown in fig. 1) thereby mounting the latch device 100 for a rail vehicle hatch door to the fixed structure. Wherein the counterbore 14 is preferably a phi 7 counterbore. The screw is preferably an M6 countersunk head screw.

According to the utility model discloses a bolt device 100 for rail vehicle hatch door, it can satisfy rail vehicle's high reliability, high stability's requirement. When the device is in an open state, the spring 33 is in a free state, and the pin 31 extends out of the pin holder 11 under the supporting action of the spring 33. When the device is in a closed state, the spring 33 is in a compressed state, and the limiting shaft 32 is clamped with the second track part 22, so that the pin shaft 31 is retracted into the pin seat 11. Furthermore, the utility model relates to a novelty, simple structure, small and exquisite, the convenient operation of appearance and safe and reliable to the in-process at work is difficult for the pine to take off, thereby reduces the possibility that takes place the incident.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Those skilled in the art can easily make changes or variations within the scope of the present disclosure, and such changes or variations are intended to be covered by the scope of the present disclosure. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A latch device for a railway car hatch, comprising:

a first pin assembly (10), wherein the first pin assembly (10) comprises a cylindrical pin base (11), an L-shaped guide rail (20) arranged on the outer wall of the pin base (11), and a first fixing base (12) and a second fixing base (13) which extend outwards from two ends of the pin base (11), wherein the L-shaped guide rail (20) comprises a longer first guide rail part (21) extending along the axial direction, and a shorter second guide rail part (22) connected with the first guide rail part (21); and

a second pin assembly (30), the second pin assembly (30) comprising a pin shaft (31) extending axially through the pin base (11), and a spacing shaft (32) extending radially from the pin shaft (31) and through the pin base (11) via the L-shaped guide rail (20),

wherein the limiting shaft (32) is configured to extend the pin shaft (31) out of the pin seat (11) when at the end of the first rail part (21) and to retract the pin shaft (31) into the pin seat (11) when at the end of the second rail part (22).

2. The latch device for a railway vehicle hatch according to claim 1, characterized in that the pin (31) comprises a first connecting shaft (311) with a larger diameter and a second connecting shaft (312) with a smaller diameter, wherein a first step is formed at the connection of the first connecting shaft (311) and the second connecting shaft (312).

3. The latch device for a railway vehicle hatch according to claim 2, characterized in that a second step extending radially inwards is provided on the inner surface of the latch seat (11), the outer surface of the second connecting shaft (312) abutting the circumferential inner surface of the second step.

4. The latch device for a railway vehicle hatch according to claim 3, characterized in that a spring (33) is sleeved on the outer circumference of the second connecting shaft (312), a first end of the spring (33) abuts the first step and a second end abuts the second step, the spring (33) being configured to be in a natural state when the check shaft (32) is at the end of the first rail part (21) and in a compressed state when the check shaft (32) is at the end of the second rail part (22).

5. The latch device for a railway vehicle hatch according to claim 4, characterized in that the pin (31) comprises a second through hole which forms a threaded connection with the connecting end of the arresting shaft (32).

6. The latch device for a door of a railway vehicle according to claim 5, characterized in that the direction of extension of the first rail part (21) forms an angle of 10 ° with the central axis of the latch seat (11).

7. The latch device for a railway vehicle door according to claim 6, characterized in that the end of the second rail part (22) is formed as an arc-shaped arresting end.

8. The latch device for a rail vehicle hatch according to claim 7, characterised in that said first fixed seat (12) and said second fixed seat (13) are symmetrically distributed and are both provided with counterbores (14) connected to the fixed structure by means of screws.

9. The latch device for a railway vehicle hatch according to claim 8, characterized in that the first latch assembly (10) is configured as a butterfly structure.

10. The latch device for a railway vehicle door according to claim 9, characterized in that the first latch assembly (10) is made in a cast manner.