CN214356308U

CN214356308U - Improved heavy truck cab locking mechanism of alarm mechanism

Info

Publication number: CN214356308U
Application number: CN202022659033.0U
Authority: CN
Inventors: 潘勇; 肖光宇; 周浩勇
Original assignee: Jingzhou Jiuyang Automobile Parts Co ltd
Current assignee: Jingzhou Jiuyang Automobile Parts Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-10-08
Anticipated expiration: 2030-11-17

Abstract

The utility model relates to the technical field of auto parts, in particular to an improved heavy truck cab locking mechanism of an alarm mechanism, which comprises a first clamping plate and a second clamping plate for fixing and positioning internal working parts of a hydraulic lock, wherein a lock hook, a bolt body, an unlocking oil cylinder assembly and a travel switch assembly are arranged between the first clamping plate and the second clamping plate; in the locking state, the bolt body rotates along the pin shaft to prop against the locking hook to keep the locking state under the action of the rotating force of the second rotating spring, the bolt body does not press a contact of the travel switch assembly, and the travel switch assembly is not alarmed when the power is cut off; under the unlocking state, when the cab is lifted, the high-pressure oil drives the plunger of the unlocking oil cylinder assembly to extend out, and the plunger props against the bolt body to rotate along the pin shaft to unlock. The utility model discloses an alarm switch changes reverse normally open switch working method into, reduces the hydraulic pressure lock when shutting, and the normal return of the bolt body is guaranteed to the frictional resistance between bolt body and the travel switch assembly contact, fine solution this type of trouble hidden danger.

Description

Improved heavy truck cab locking mechanism of alarm mechanism

Technical Field

The utility model relates to an auto-parts technical field specifically is a heavy truck driver's cabin locking mechanism of alarm mechanism improved generation.

Background

The hydraulic system consists of a hydraulic pump, a hydraulic cylinder, a hydraulic lock and a connecting oil pipe. The hydraulic pump is a power source of the hydraulic system, and the output pressure of the hydraulic pump drives the hydraulic cylinder to extend and retract. When the hydraulic lock finishes lifting the cab, unlocking the cab; and when the cab falls back to the place, the working process of the cab is locked. The hydraulic lock plays a role in locking and unlocking the cab in the system, and the stable and safe driving performance of the cab during the driving of the vehicle is guaranteed.

The general hydraulic lock has the fault defects that the bolt body can not normally return when the hydraulic lock is locked, a cab virtual lock and an overturn alarm lamp are normally on and the like when the switch contact is blocked due to the clamping stagnation of the switch contact when the switch contact is blocked because the bolt body is not normally returned when the hydraulic lock is locked because the bolt body rotating spring return moment is mainly decomposed into the downward movement force of the switch contact and the friction force of the switch contact and the arc position of the bolt body. Therefore, an improved heavy truck cab locking mechanism of the alarm mechanism is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an alarm mechanism improved generation heavily blocks driver's cabin locking mechanism through changing alarm switch into reverse normally open switch working method, has the accurate advantage of reporting to the police, and the bolt body can not normally return when having solved among the prior art hydraulic pressure lock shutting, produces the problem that the virtual lock of driver's cabin and upset alarm lamp are often bright.

In order to achieve the above object, the utility model provides a following technical scheme: an improved heavy truck cab locking mechanism of an alarm mechanism comprises a first clamping plate and a second clamping plate which are used for fixing and positioning internal working parts of a hydraulic lock, wherein a lock hook, a bolt body, an unlocking oil cylinder assembly and a travel switch assembly are arranged between the first clamping plate and the second clamping plate;

in the locking state, the bolt body rotates along the pin shaft to prop against the locking hook to keep the locking state under the action of the rotating force of the second rotating spring, the bolt body does not press a contact of the travel switch assembly, and the travel switch assembly is not powered off and does not give an alarm;

under the unlocking state, when the cab is lifted, the high-pressure oil drives the plunger of the unlocking oil cylinder assembly to extend out, the plunger abuts against the bolt body and rotates along the pin shaft to unlock the lock, the bolt body rotates to press the contact of the travel switch assembly, the travel switch assembly is electrified to alarm, and the lock hook rotates along the pin shaft under the action of the first rotating spring to complete the unlocking action.

Preferably, the pin shaft is provided with a positioning sleeve for positioning.

Preferably, the unlocking oil cylinder assembly is fixed between the first clamping plate and the second clamping plate through an oil cylinder bracket.

Preferably, the unlocking oil cylinder assembly is provided with a dustproof plug cover.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the alarm switch is changed into a reverse normally open switch working mode, so that the frictional resistance between the bolt body and the switch contact when the hydraulic lock is locked is reduced, the normal return of the bolt body is ensured, the potential fault is well solved, and the product quality is good in market performance. The problem of among the prior art hydraulic lock when shutting the bolt body can not normally return, produce the driver's cabin virtual lock and upset alarm lamp often bright is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-C of FIG. 1;

fig. 5 is a top view of the present invention;

FIG. 6 is a schematic view of a conventional locked state;

fig. 7 is a schematic view of the improved locking state of the present invention.

In the figure: 1. a latch hook; 2. a first rotary spring; 3. a plug body; 4. a second rotary spring; 5. a pin shaft; 6. unlocking the oil cylinder assembly; 7. a cylinder bracket; 8. a positioning sleeve; 9. a travel switch assembly; 10. a dustproof blanking cover; 11. a first splint; 12. a second splint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

An improved heavy truck cab locking mechanism of an alarm mechanism comprises a first clamping plate 11 and a second clamping plate 12 which are used for fixing and positioning internal working parts of a hydraulic lock, wherein a lock hook 1, a bolt body 3, an unlocking oil cylinder assembly 6 and a travel switch assembly 9 are arranged between the first clamping plate 11 and the second clamping plate 12;

in the locking state, the bolt body 3 rotates along the pin shaft 5 to prop against the locking hook 1 to keep the locking state under the action of the rotating force of the second rotating spring 4, the bolt body 3 does not press a contact of the travel switch assembly 9, and the travel switch assembly 9 is not powered off and does not give an alarm;

in the unlocking state, when the cab is lifted, the plunger of the unlocking oil cylinder assembly 6 is driven by high-pressure oil to extend, the plunger abuts against the bolt body 3 and rotates along the pin shaft 5 to unlock, the bolt body 3 rotates to press a contact of the travel switch assembly 9, the travel switch assembly 9 is electrified to alarm, and the lock hook 1 rotates along the pin shaft 5 under the action of the force of the first rotating spring 2 to complete unlocking. And the unlocking oil cylinder assembly 6 is provided with a dustproof plug cover 10. Plays a certain dustproof role. As shown in fig. 1. The working arc surface of the bolt body is changed into a reverse arc surface, and meanwhile, the roughness of the working arc surface of the bolt body is improved.

The pin shaft 5 is provided with a positioning sleeve 8 for positioning. As shown in fig. 3 and 4. The unlocking oil cylinder assembly 6 is fixed between the first clamping plate 11 and the second clamping plate 12 through the oil cylinder bracket 7. As shown in fig. 5.

Structurally, the working arc surface of the bolt body 3 in contact with the contact of the travel switch assembly 9 is changed, the diameter of the working arc surface of the bolt body 3 is changed from original phi 50mm to phi 62mm, and meanwhile, the center position of the arc is changed, so that the working arc surface of the bolt body 3 and the working arc surface of the original hydraulic lock are in a reverse working mode. When the hydraulic lock is in locking operation, the bolt body 3 returns, the working arc surface of the bolt body 3 is far away from a contact of a travel switch assembly 9 (the original hydraulic lock is used for pressing down the contact of the travel switch assembly 9), the bolt body 3 is assisted to return, meanwhile, the requirement that the surface roughness of the working arc surface of the bolt body 3 is increased to be 3.2 is met, and the friction resistance between the working arc surface of the bolt body and the contact of the travel switch assembly 9 is reduced. The alarm switch is changed into a reverse normally open switch (the original switch is a normally closed switch), and the alarm switch is matched with the reverse working mode of the working cambered surface of the bolt body 3, so that the logic of a vehicle alarm system is met. Through the improvements, the hidden troubles of faults such as normally bright of a turnover alarm lamp of a cab, no return of the bolt body 3, virtual locking and the like are well solved.

When the hydraulic unlocking device is used, when the cab is lifted, the oil pump provides high-pressure hydraulic oil to drive the plunger of the unlocking oil cylinder assembly 6 to extend, and the head of the plunger props against the bolt body 3 to rotate along the pin shaft 5. The bolt body 3 rotates the work cambered surface and oppresses travel switch assembly 9 contact retraction, and travel switch assembly 9 circular telegram is reported to the police, unblocks latch hook 1 simultaneously, and latch hook 1 rotates along round pin axle 5 under the effect of first commentaries on classics spring 2 and accomplishes the action of unblanking. When the cab falls back, the lock hook 1 rotates to a locking position under the pressure of the gravity of the cab lock pin, the bolt body 3 returns to the locking position under the action of the rotating force of the second rotating spring 4, the rotary working arc surface of the bolt body 3 is far away from a contact of the travel switch assembly 9, the contact of the travel switch assembly 9 extends out to be opposite to the original hydraulic lock principle, as shown in fig. 6 and 7, the travel switch assembly 9 is powered off and does not give an alarm, and meanwhile, the bolt body 3 locks the lock hook 1 to complete cab locking.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an alarm mechanism improved generation heavily blocks driver's cabin locking mechanical system, includes first splint (11) and second splint (12) of fixed and location hydraulic pressure lock internal work part, its characterized in that: a lock hook (1), a bolt body (3), an unlocking oil cylinder assembly (6) and a travel switch assembly (9) are arranged between the first clamping plate (11) and the second clamping plate (12);

in the locking state, the bolt body (3) is rotated along the pin shaft (5) under the action of the rotary force of the second rotary spring (4) to prop against the locking hook (1) to keep the locking state, the bolt body (3) does not press a contact of the travel switch assembly (9), and the travel switch assembly (9) is not in power-off state and does not give an alarm;

under the unlocking state, when the cab is lifted, a plunger of an unlocking oil cylinder assembly (6) is driven by high-pressure oil to extend, the plunger props against a bolt body (3) and rotates along a pin shaft (5) to unlock, the bolt body (3) rotates to press a contact of a travel switch assembly (9), the travel switch assembly (9) is electrified to alarm, and the lock hook (1) rotates along the pin shaft (5) under the action of force of a first rotating spring (2) to complete the unlocking action.

2. The improved heavy truck cab locking mechanism of the warning mechanism as claimed in claim 1, wherein: and a positioning sleeve (8) with a positioning function is arranged on the pin shaft (5).

3. The improved heavy truck cab locking mechanism of the warning mechanism as claimed in claim 1, wherein: the unlocking oil cylinder assembly (6) is fixed between the first clamping plate (11) and the second clamping plate (12) through an oil cylinder bracket (7).

4. The improved heavy truck cab locking mechanism of the warning mechanism as claimed in claim 1 or 3, wherein: and the unlocking oil cylinder assembly (6) is provided with a dustproof plug cover (10).