CN215793812U

CN215793812U - Trigger mechanism for mechanical contact type obstacle detection device

Info

Publication number: CN215793812U
Application number: CN202122341010.XU
Authority: CN
Inventors: 张晨
Original assignee: Liaoning Yesheng Rail Drive Equipment Technology Co ltd
Current assignee: Liaoning Yesheng Rail Drive Equipment Technology Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-02-11
Anticipated expiration: 2031-09-27

Abstract

The utility model discloses a trigger mechanism for a mechanical contact type obstacle detection device, which comprises an electric box body with a cavity inside, an electric box cover, a micro switch and an action unit, wherein the electric box body is formed by milling aluminum alloy, more than three groups of micro switches are arranged in the electric box body side by side, a first threaded hole for installing the action unit is formed in one side surface of the electric box body, a positioning hole and a second threaded hole for installing the micro switch are formed in the bottom surface of the electric box body, a spigot is arranged at an opening of the electric box body and is matched and clamped with a boss on the electric box cover, and the action unit can realize the expansion of a 5mm stroke.

Description

Trigger mechanism for mechanical contact type obstacle detection device

Technical Field

The utility model relates to the technical field of unmanned railway vehicles, in particular to a trigger mechanism for a mechanical contact type obstacle detection device. The mechanism has the characteristics of reliable structure, small volume and high protection grade, and can be reliably used in a complex severe environment under a railway vehicle, so that the reliable use of the whole product is ensured.

Background

With the rapid development of domestic urbanization, in order to solve the increasingly serious problem of traffic jam, many large and medium-sized cities are solved by building subways. In order to further improve the carrying capacity and intelligent informatization of vehicles, unmanned and automatic subway trains are being developed in China. The accident that the automatic driving or unmanned subway train meets an obstacle in the running process or derails due to a certain condition is a contingent event, but once the accident happens, the accident seriously affects the safety of the train and passengers. Therefore, it is very necessary to invent an obstacle detection and derailment detection device applied to an automatic or unmanned train, and a trigger structure applied to the obstacle detection device must be safe and reliable and can be reliably used under severe vibration conditions of vehicle bottom and under dust and water mist environments.

The prior art CN213862257U discloses a mechanical contact type subway obstacle detection and derailment detection device, which is simple in structure and triggers a travel switch to send a signal through large deformation of an elastic support. But its trigger mechanism has only one travel switch and its travel switch is bulky. The prior art CN106004927B discloses a rail vehicle obstacle detection device, which uses a displacement sensor to detect the magnitude of the force applied to a detection beam, but the output of the displacement sensor is a continuous analog electrical signal, which is easily subjected to electromagnetic interference in a complex environment outside the vehicle to cause false triggering, and the reliability is low.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a trigger mechanism for a mechanical contact type obstacle detection device, which is arranged at the sensor part of the obstacle detection device and triggers a signal after an obstacle detection beam displaces. The device can realize high-grade protection, and is dustproof and waterproof, can prevent that foreign object from destroying, adopts three to get two voting modes and has improved the reliability and the security of product.

The utility model adopts the technical scheme that the trigger mechanism for the mechanical contact type obstacle detection device comprises an electric box body, an electric box cover, a micro switch and an action unit, wherein the electric box body is internally provided with a cavity, the electric box body is formed by milling aluminum alloy, more than three groups of micro switches are arranged in the electric box body side by side, one side surface of the electric box body is provided with a first threaded hole for installing the action unit, the bottom surface of the electric box body is provided with a positioning hole and a second threaded hole for installing the micro switch, the bottom of the electric box body is provided with a first installation hole for installing a corrugated pipe joint, the opening of the electric box body is provided with a spigot, the spigot is matched and clamped with a boss on the electric box cover, the action unit can realize the expansion and contraction of 5mm stroke, the trigger can be realized in a compressed state, the action unit comprises an expansion link and a pressure spring, the sealing ring, the action bars of fixed cover and T type, fixed cover in the outside of telescopic link and action bars, the one end of telescopic link have the recess, the action bars of T type insert the recess in.

Furthermore, one end of the telescopic rod is a connecting section with the diameter smaller than the maximum diameter of the telescopic rod, a pressure spring is sleeved on the connecting section and stops on the inner wall of the end part of the fixed sleeve, and a sealing ring is arranged at the connecting part of the other end of the telescopic rod and the end part of the fixed sleeve.

Further, the trigger distance of the micro switch is 5 mm.

Further, the diameter of the first threaded hole is M10.

Furthermore, a pair of corners on the electrical box cover are provided with second mounting holes fixed with the electrical box body.

Furthermore, the quantity of the micro switches is the same as that of the action units.

The utility model has the beneficial effects that: this barrier detection device trigger structure installs the sensor integration in electric box inner chamber, has very high environmental suitability, can be waterproof dustproof, prevents foreign object's infringement for guarantee the reliable use of sensor. The trigger structure adopts a micro switch with small volume, so that the volume of the whole trigger structure is reduced; and meanwhile, a three-out-of-two voting mechanism of three micro switches is adopted, so that the reliability of the system is enhanced. The action unit adopts the spring as an elastic element, can realize the reuse of the trigger mechanism, and is provided with the sealing ring at the position of the motion shaft, thereby improving the waterproof and dustproof capacity. In summary, the trigger mechanism of the obstacle detection device described in the utility model has the advantages of simple structure, safety, reliability, light weight, low cost and small volume. In use, the obstacle detection device can be helped to realize the function, so that the safe and reliable operation of the vehicle is ensured.

Drawings

Fig. 1 is a structural view of a mounting plate of the trigger mechanism of the present invention mounted on an obstacle detecting device.

Fig. 2 is a structural view of a trigger mechanism of the obstacle detecting device according to the present invention.

Fig. 3 is a structural view of the electric box of the present invention.

Fig. 4 is a structural view of the electric box cover of the present invention.

FIG. 5 is a diagram showing the structure of an operation unit according to the present invention.

The labels in the figure are: 1-an electric box body, 2-an electric box cover, 3-a microswitch, 4-an action unit, 5-a screw, 6-a gasket, 11-a fixed flange, 12-a fixed hole, 13-a first threaded hole, 14-a positioning hole, 15-a second threaded hole, 16-a first mounting hole, 17-a spigot, 21-a boss, 22-a second mounting hole, 41-a telescopic rod, 42-a pressure spring, 43-a sealing ring, 44-a fixed sleeve, 45-an action rod and 46-a connecting section.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.

The utility model aims to provide a trigger mechanism applied to an obstacle detection device, which is arranged at the position of a sensor of the obstacle detection device and triggers a signal after an obstacle detection beam displaces. The device can realize high-grade protection, and is dustproof and waterproof, can prevent that foreign object from destroying, adopts three to get two voting modes and has improved the reliability and the security of product.

As shown in fig. 1, the trigger mechanism of the obstacle detection device is mounted on the mounting plate of the obstacle detection device, when the detection beam encounters an obstacle, the detection beam displaces and compresses the trigger mechanism, when the movement displacement exceeds a set value, a switch signal of the trigger mechanism changes, and meanwhile, the signal is transmitted to a train control system, and an emergency braking measure is taken to ensure the safety of a train and passengers, so that the situation is prevented from further expanding.

As shown in fig. 2, the obstacle detection device trigger mechanism includes an electrical box body 1, an electrical box cover 2, micro switches 3, action units 4, screws 5, washers 6, and the like, wherein the micro switches 3 are arranged in the electrical box body 1 in three groups or more, the micro switches 3 are fixed side by side at intervals, the action units 4 are also arranged in three groups or more, the number of the action units is the same as that of the micro switches 3, the action units 4 are mounted on the side wall of the electrical box body 1, the action units 4 are in contact with the micro switches 3, and the electrical box cover 2 is engaged with the electrical box body 1.

As shown in fig. 3, the electrical box body 1 is formed by milling aluminum alloy, a cavity in the electrical box body is a box body structure with an upper opening, more than three micro switches 3 can be installed in the electrical box body 1 according to needs, a fixing flange 11 and a fixing hole 12 connected with a fixing plate of the obstacle detection device are arranged around the electrical box body 1, a first threaded hole 13 for installing an action unit 4 is arranged on the side surface of the electrical box body 1, the diameter of the first threaded hole is M10, a positioning hole 14 and a second threaded hole 15 for installing the micro switches 3 are arranged on the bottom surface of the electrical box body 1, a first corrugated pipe joint mounting hole 16 is arranged at the bottom of the electrical box body 1, the first mounting hole 16 is located on one side of the bottom of the electrical box body 1, the number of the first mounting hole is 1, and a spigot 17 is arranged at the opening of the electrical box body 1; the spigot 17 is adapted to engage with the electrical box cover 2. The microswitch 3 is a general high-reliability microswitch, the triggering distance is 5mm, and the microswitch has the advantages of small volume and high reliability.

As shown in fig. 4, the upper edge of the electrical box cover 2 is provided with a boss 21, the boss 21 can be tightly matched with the spigot 17, and can play a role of sealing, and the electrical box cover is provided with a second mounting hole 22 of the electrical box body 1; fixedly connected through the second mounting hole 22.

As shown in fig. 5, the actuating unit 4 includes an expansion link 41, a compression spring 42, a sealing ring 43, a fixing sleeve 44, and an actuating rod 45, one end of the expansion link 41 has a groove, which may be a cylindrical deep hole, the T-shaped action rod 45 is inserted into the cylindrical deep hole to realize the connection between the expansion link 41 and the action rod 45, the outer sides of the telescopic rod 41 and the action rod 45 are sealed by an outer sleeve fixing sleeve 44, and the telescopic rod 41 and the action rod 45 both extend out of two ends of the fixing sleeve 44, the outer wall side of the cylindrical deep hole is provided with a connecting section 46 with the diameter smaller than the maximum diameter of the telescopic rod 41, that is, the telescopic rod 41 is a cylindrical end part with a diameter smaller than the diameter of the main body of the telescopic rod 41, and the inner side of the cylindrical end part is provided with a groove or a cylindrical deep hole, a compression spring 42 is mounted on the outside of the connecting section 46, which compression spring 42 rests against one end wall of a mounting sleeve 44. The joint of the end edge of the telescopic rod 41 and the end edge of the fixed sleeve 44 is provided with a sealing ring 43, so that the precision of triggering action is increased, the action unit 4 can realize the expansion and contraction of 5mm stroke, the normal state is an extension state, and the compression state is a compression state after the compression, so that the triggering can be realized.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A trigger mechanism for a mechanical contact obstacle detection device, characterized by: the electric box comprises an electric box body (1) with a cavity inside, an electric box cover (2), a microswitch (3) and an action unit (4), wherein the electric box body (1) is formed by milling aluminum alloy, more than three groups of microswitches (3) are arranged in the electric box body (1) side by side, a first threaded hole (13) for installing the action unit (4) is formed in one side surface of the electric box body (1), a positioning hole (14) for installing the microswitch (3) and a second threaded hole (15) are formed in the bottom surface of the electric box body (1), a first mounting hole (16) for installing a corrugated pipe joint is formed in the bottom of the electric box body (1), a spigot (17) is arranged at the opening of the electric box body (1), the spigot (17) is matched and clamped with a boss (21) on the electric box cover (2), and the action unit (4) can realize the expansion of a stroke of 5mm, the compression state can trigger, action unit (4) including telescopic link (41), pressure spring (42), sealing washer (43), action bars (45) of fixed cover (44) and T type, fixed cover (44) cover in the outside of telescopic link (41) and action bars (45), the one end of telescopic link (41) have the recess, action bars (45) of T type insert the recess in.

2. A trigger mechanism for a mechanical contact obstacle detection device according to claim 1, wherein: one end of the telescopic rod (41) is a connecting section (46) with the diameter smaller than the maximum diameter of the telescopic rod (41), a pressure spring (42) is sleeved on the connecting section (46), the pressure spring (42) is stopped on the inner wall of the end part of the fixed sleeve (44), and a sealing ring (43) is arranged at the connecting part of the other end of the telescopic rod (41) and the end part of the fixed sleeve (44).

3. A trigger mechanism for a mechanical contact obstacle detection device according to claim 1, wherein: the trigger distance of the microswitch (3) is 5 mm.

4. A trigger mechanism for a mechanical contact obstacle detection device according to claim 1, wherein: the diameter of the first threaded hole (13) is M10.

5. A trigger mechanism for a mechanical contact obstacle detection device according to claim 1, wherein: and a pair of corners on the electric box cover (2) are provided with second mounting holes (22) fixed with the electric box body (1).

6. A trigger mechanism for a mechanical contact obstacle detection device according to claim 1, wherein: the quantity of the micro switches (3) is the same as that of the action units (4).