CN217145978U

CN217145978U - High-reliability subway vehicle door lower stop pin device

Info

Publication number: CN217145978U
Application number: CN202221238790.3U
Authority: CN
Inventors: 付国平; 郭正海; 吴亮; 姚远; 徐志龙
Original assignee: Hangzhou Metro Operation Co ltd
Current assignee: Hangzhou Metro Operation Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-08-09
Anticipated expiration: 2032-05-23

Abstract

The utility model belongs to the technical field of the track traffic technique and specifically relates to a fender round pin device under subway door of high reliability, including installing support, fender round pin and fastening nut down, the upper segment cooperation of keeping off the round pin down is in the screw of installing support, and the hypomere is outstanding downwards, and the fastening nut cooperation is kept off the round pin under and is supported the bottom surface of tight installing support, still includes fastening screw, and this fastening screw sets up the top surface at the installing support, and its lower extreme stretches into the screw and is connected with the screw thread counter bore at fender round pin top down. The utility model discloses can solve down the backing pin because of fastening nut is not hard up and the installation leads to not in place to interfere the jamming with lower door frame guide slot, can't get into the problem of lower door frame guide slot smoothly, improve the reliability of backing pin down, reduce the fault condition, the installation with dismantle safe swift, convenient maintenance.

Description

High-reliability subway vehicle door lower stop pin device

Technical Field

The utility model belongs to the technical field of the rail transit technique and specifically relates to a fender round pin device under subway door of high reliability.

Background

With the increasing urbanization process in recent years, people are more and more favored to fast, efficient and large-traffic urban rail transit. Among them, the subway which is comfortable, on-time, large in capacity and not affected by weather becomes a common vehicle for citizens to go out, so that the reliability and the safety of the subway vehicle are very important. The door system is one of important systems of the subway vehicle, has direct influence on the running of the vehicle and is more related to the safety of passengers. Many passengers are often carried in the subway at peak time, and part of people are often crowded beside the door to influence the normal closing track of the door, so that the door cannot be closed if the lower stop pin device is unreliable, and the train operation is seriously influenced.

At present, in most of subway lines in China, the vehicle door is generally locked by adopting a lower stop pin structure, and as shown in figure 1, the vehicle door is generally of a simple stop pin and fastening nut structure. When the lower stop pin 4 is installed, the fastening nut 3 is sleeved on the thread section of the lower stop pin 4, then the thread section is screwed into the threaded hole 2 from the lower part of the installation support 1, after the thread section is screwed to a proper height, the fastening nut is screwed down to enable the thread section to be abutted against the bottom of the installation support, the installation height of the lower stop pin 4 is about 5cm higher than the bottom plate surface of a carriage and about 2-3mm away from the lower door frame guide groove, the motion track of the lower stop pin 4 needs to be matched with the angle and the depth of the lower door frame guide groove 5, and the lower stop pin 4 cannot interfere and collide with the lower door frame guide groove 5 in the door opening and closing process.

Although the design has the advantages of simple structure and high strength, and can prevent the vehicle door from being pushed out after being locked, when the fastening nut of the lower stop pin is loosened, the lower stop pin is easy to sink and interfere with the bottom of the guide groove of the lower door frame; if the lower stop pin is not installed in place, the lower stop pin is easy to interfere and block with the guide groove of the lower door frame and cannot smoothly enter the guide groove of the lower door frame. The design still can generate potential safety hazards as can be seen from the lower stop pin faults frequently occurring in the subway running process. Therefore, a need exists in the industry for a more reliable lower stop pin device for a subway door.

Disclosure of Invention

The utility model aims at overcoming not enough among the above-mentioned background art, provide a subway door of high reliability keeps off round pin device down, can solve down keep off the round pin because of fastening nut is not hard up and the installation leads to not in place to interfere the jamming with lower door frame guide slot, can't get into the problem of lower door frame guide slot smoothly, improves the reliability of keeping off the round pin down, reduces the fault situation, installs and dismantles safe swift, convenient maintenance.

The utility model adopts the technical scheme as follows:

the utility model provides a fender round pin device under subway door of high reliability, includes installing support, keeps off round pin and fastening nut down, keeps off the upper segment cooperation of round pin down in the screw of installing support, and the hypomere is overhanging downwards stretched, and fastening nut cooperation just supports the bottom surface of tight installing support on keeping off the round pin down, still includes fastening screw, and this fastening screw sets up the top surface at installing support, and its lower extreme stretches into the screw and with keep off the screw counter bore connection at round pin top down.

Preferably, the fastening screw is provided with at least one washer, the diameter of the washer is smaller than the diameter of the head of the fastening screw, and the outer diameter of the washer is larger than the diameter of the screw hole.

Preferably, the fastening screw is a flat-head screw.

Preferably, the lower end of the lower stop pin is provided with an elastic roller.

Preferably, the inner hole wall of the elastic roller is provided with an annular groove, the lower end of the lower stop pin is provided with a reducing section, the outer wall of the reducing section is provided with an annular bulge, the reducing section is inserted into the inner hole of the elastic roller, and the annular bulge is embedded into the annular groove.

Preferably, the bottom surface of the reducing section does not exceed the lower edge of the inner hole of the elastic roller.

Preferably, the elastic roller is a nylon roller.

The utility model has the advantages that: 1. the lower stop pin is upwards tensioned by the fastening screw, the height of the lower stop pin is locked, and the lower stop pin still cannot sink and interfere with the bottom of the lower door frame guide groove even under the condition that the fastening nut is loosened; 2. the lower end of the lower stop pin is provided with the elastic roller, so that the friction force of the lower stop pin entering the lower door frame guide groove can be further reduced, the lower stop pin can enter the lower door frame guide groove more smoothly, the use scene is more flexible, and the practicability is higher; 3. the round head screw and the elastic roller are detachable structures, so that the disassembly and the assembly of maintenance personnel are facilitated, and the maintenance work efficiency is improved.

Drawings

Fig. 1 is a perspective view of a conventional lower pin blocking device.

Fig. 2 is a schematic perspective view of the present invention.

Fig. 3 is a schematic view of the structure of the present invention.

Fig. 4 is a sectional view taken along line a-a in fig. 3.

The figure shows that: the mounting bracket comprises a mounting bracket 1, a screw hole 2, a fastening nut 3, a lower stop pin 4, a fastening surface 4.1, a thread section 4.2, a thread counter bore 4.3, a reducing section 4.4, an annular bulge 4.5, a lower door frame guide groove 5, a fastening screw 6, a gasket 7, a bolt 8 and an elastic roller 9.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples, but the present invention is not limited to the following examples.

In the description of the present invention, it is to be noted that unless otherwise explicitly specified and limited, specific meanings of the general terms in the present invention may be understood as specific conditions by those of ordinary skill in the art.

As shown in fig. 2 to 4, the present embodiment provides a highly reliable lower stop pin device for a subway door, which includes a mounting bracket 1, a lower stop pin 4 and a fastening nut 3. The mounting bracket 1 is fastened to a subway door by bolts 8, and is formed with screw holes 2 penetrating from the top surface to the ground. The upper section of the lower stop pin 4 is a threaded section 4.2, the threaded section 4.2 is screwed into the screw hole 2 from the bottom of the mounting bracket 1, and the lower section of the lower stop pin downwardly overhangs. The threaded section 4.2 should have a top surface which is lower than the top surface of the mounting bracket 1 when mounted. In order to facilitate the operation, a plurality of fastening surfaces 4.1 are arranged on the lower side of the thread section 4.2, and the fastening surfaces can be clamped by a tool during the operation to screw the thread section 4.2 into the screw hole 2. The fastening nut 3 is matched on the thread section 4.2 of the lower stop pin 4 and tightly abuts against the bottom surface of the mounting bracket 1.

In order to avoid the sinking of the lower stop pin 4 due to vibration, gravity and other factors after the fastening nut 3 is loosened, the present embodiment includes a fastening screw 6, the fastening screw 6 is disposed on the top surface of the mounting bracket 1, the head of the fastening screw is clamped on the top surface of the mounting bracket 1, and the lower end of the fastening screw extends into the screw hole 2 and is connected with a threaded counter bore 4.3 formed in the top of the lower stop pin 4. In order to facilitate the height adjustment, the fastening screw 6 is provided with at least one gasket 7, the diameter of the gasket 7 is smaller than the diameter of the head of the fastening screw 6, and the outer diameter of the gasket 7 is larger than the diameter of the screw hole 2. The type of the fastening screw 6 can be selected according to the requirement, and in the embodiment, the fastening screw 6 is a flat round head screw.

Furthermore, the lower end of the lower stop pin 4 is provided with an elastic roller 9, and the outer diameter of the elastic roller 9 is larger than that of the lower end of the lower stop pin by about 1 mm. The inner hole wall of the elastic roller 9 is provided with an annular groove, the lower end of the lower baffle pin 4 is provided with a reducing section 4.4, the outer wall of the reducing section 4.4 is provided with an annular bulge 4.5, the reducing section 4.4 is inserted into the inner hole of the elastic roller 9, and the annular bulge 4.5 is embedded into the annular groove. The annular projection 4.5 can guide the elastic roller 9 in the circumferential direction and limit the elastic roller 9 in the axial direction. In order to avoid the friction between the bottom surface of the lower stop pin 4 and the lower doorframe guide groove 5, the bottom surface of the reduced diameter section 4.4 does not exceed the lower edge of the inner hole of the elastic roller 9. The elastic roller 9 is preferably made of wear-resistant nylon.

The working principle of the embodiment is as follows:

in the process of opening and closing the vehicle door, the upper flat round head screw 6 abuts against the top surface of the mounting bracket 1, the height of the lower stop pin 4 is locked, and even under the condition that the fastening nut 3 of the lower stop pin 4 is loosened, the lower stop pin 4 can still keep the mounting height unchanged, so that friction with the lower door frame guide groove 5 is avoided; in the process of opening and closing the vehicle door, even if the lower stop pin 4 interferes with the lower door frame guide groove 5 to a certain degree due to reasons such as improper installation and the like, the lower stop pin 4 can be guided to smoothly enter the lower door frame guide groove 5 by means of deformation and rolling of the elastic roller 9, and the fault condition is reduced.

The above description is only a preferred embodiment of the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a fender round pin device under subway door of high reliability, includes installing support (1), keeps off round pin (4) and fastening nut (3) down, and the upper segment cooperation of keeping off round pin (4) is in screw (2) of installing support (1) down, and the hypomere is overhanging downwards, and fastening nut (3) cooperation just supports the bottom surface of tight installing support (1) on keeping off round pin (4) down, its characterized in that: the mounting structure is characterized by further comprising a fastening screw (6), wherein the fastening screw (6) is arranged on the top surface of the mounting bracket (1), and the lower end of the fastening screw (6) extends into the screw hole (2) and is connected with a threaded counter bore (4.3) in the top of the lower stop pin (4).

2. The high-reliability subway car door lower stop pin device as claimed in claim 1, wherein: the fastening screw (6) is provided with at least one gasket (7), the diameter of the hole of the gasket (7) is smaller than the diameter of the head of the fastening screw (6), and the outer diameter of the gasket (7) is larger than the diameter of the screw hole (2).

3. The high-reliability subway car door lower stop pin device as claimed in claim 1, wherein: the fastening screw (6) is a flat round head screw.

4. A highly reliable lower stop pin device for a subway door as claimed in claim 1, 2 or 3, wherein: the lower end of the lower stop pin (4) is provided with an elastic roller (9).

5. The high-reliability subway car door lower stop pin device as claimed in claim 4, wherein: the inner hole wall of the elastic roller (9) is provided with an annular groove, the lower end of the lower stop pin (4) is provided with a reducing section (4.4), the outer wall of the reducing section (4.4) is provided with an annular bulge (4.5), the reducing section (4.4) is inserted into the inner hole of the elastic roller (9), and the annular bulge (4.5) is embedded into the annular groove.

6. A highly reliable lower stop pin device for a subway door as claimed in claim 5, wherein: the bottom surface of the reducing section (4.4) does not exceed the lower edge of the inner hole of the elastic roller (9).

7. The high-reliability subway car door lower stop pin device as claimed in claim 4, wherein: the elastic roller (9) is a nylon roller.