CN201102499Y

CN201102499Y - Liquid-pneumatic power latch hook for backdoor of self-discharging vehicle case

Info

Publication number: CN201102499Y
Application number: CNU2007200603254U
Authority: CN
Inventors: 袁雪锋
Original assignee: SHAOGUAN CRANE FACTORY LIMITED-LIABILITY Co
Current assignee: SHAOGUAN CRANE FACTORY LIMITED-LIABILITY Co
Priority date: 2007-11-25
Filing date: 2007-11-25
Publication date: 2008-08-20
Anticipated expiration: 2017-11-25

Abstract

The utility model relates to the liquid pneumatic lock hook of the back door of a self-unloading carriage which includes a mudsill of the carriage. A bracket is fixed on the back end of the mudsill of the carriage and is equipped with the lock hook through a shaft. The hook end of the lock hook is in contact with a lock latch on the bottom of the back door of the carriage, and the other end of the lock hook is equipped with a pulling rod through a shaft. The pulling rod is connected with the liquid pneumatic cylinder. Liquid pressure is adopted to control the lock hook of the back door of the carriage, and the lock hook can be opened before the self-unloading carriage is raised. Therefore, the compression of goods can not affect the opening and the closing of the lock hook of the back door. When the self-unloading carriage is lowered down, the lock hook of the door is closed to avoid bending and broken phenomena of the pulling rod caused by the uncoordinated closing with the lock hook of the door during the decreasing of the carriage.

Description

Dumper skip back door hydraulic pneumatic latch hook

[technical field]

The utility model relates to a kind of liquid gas pressure operatorless device, relates in particular to a kind of dumper skip back door hydraulic pneumatic latch hook that adopts the liquid gas pressure control technology to control.

[background technology]

Existing dumper skip back door latch hook device, generally be provided with rocking arm and contact with the contact block that is fixed on vehicle frame by the axle that is contained in the railway carriage bottom, the lifting of railway carriage makes contact block and rocking arm slide, order about axle and pull bar interlock, pulling is located at wagon backdoor bottom latch hook and opens and closes, the control wagon backdoor is locked and is opened, wagon backdoor latch hook because of this structure, it is slowly to open along with the rise of railway carriage, treat that railway carriage rises to when the highest that it just reaches the state of standard-sized sheet, when self-unloading, usually, make the chamber door latch hook normally not open and close because of Loaded goods kills the back chamber door; It is improper to regulate as pull bar, also can cause the switching mal of chamber door latch hook; Also the phenomenon that latch hook and pull bar are broken can take place, influence vehicle therefrom and normally move.

[utility model content]

In order to overcome the above-mentioned shortcoming of prior art, the utility model provides a kind of employing liquid gas control system technology, and dumper skip is opened at rise Qianmen latch hook can not cause the dumper skip back door hydraulic pneumatic latch hook that influences the switching of rear cabinet door lock hook because of the Loaded goods compressing.

The technical method that its technical matters that solves the utility model adopts is: a kind of dumper skip back door hydraulic pneumatic latch hook, comprise the railway carriage bottom girder, in railway carriage bottom girder rear end support is housed fixedly, this support is equipped with latch hook by being coupling, the hook end of this latch hook touches mutually with wagon backdoor bottom snap close, the other end of this latch hook is equipped with pull bar by being coupling, this pull bar links to each other with liquid cylinder.

Described latch hook structure is to lock hook structure.

Described liquid cylinder communicates with pilot piping.

Described pilot piping is grown valve with the power takeoff electricity and is communicated.

The beneficial effects of the utility model are: adopt liquid gas pressure control dumper skip rear cabinet door lock hook, make dumper skip before rise, can open the door lock hook, thereby can not open and close because of the Loaded goods compressing influences rear cabinet door lock hook, treat that dumper skip reduces to when finishing door lock hook closure, close inharmonious with the door lock hook when avoiding railway carriage to descend and pull bar takes place tear open and bend and split off phenomenon, because what the latch hook structure adopted is to lock hook structure,, also can open automatically even when liquid gas pressure is low.The utlity model has rational in infrastructure, control comfort and the high advantage of conveying efficiency, be suitable for using on the latch hook of dumping car body door.

[description of drawings]

Fig. 1 is a structural representation of the present utility model.

Among the figure: 1-railway carriage bottom girder, 2-support, 3-latch hook, 4-snap close, 5-pull bar, 6-liquid cylinder.

[specific embodiment]

Below in conjunction with drawings and Examples the utility model is further specified:

Referring to Fig. 1, a kind of dumper skip back door hydraulic pneumatic latch hook, comprise railway carriage bottom girder 1, in railway carriage bottom girder 1 rear end support 2 is housed fixedly, this support 2 is equipped with latch hook 3 by being coupling, the hook end of this latch hook 3 and wagon backdoor bottom snap close 4 contacts, when preventing that liquid gas pressure from hanging down, can not open latch hook 3, latch hook 3 structures have adopted the structure of locking hook.The other end of this latch hook 3 is equipped with pull bar 5 by being coupling, this pull bar 5 links to each other with liquid cylinder 6, for making things convenient for the length of adjusting yoke 5, makes that latch hook 3 actions in both sides are consistent with the switching degree, and pull bar 5 structures adopt the structure of adjusting screw and shaft clevis; Liquid cylinder 6 is grown valve by pipeline with the power takeoff electricity and is communicated.Adopt liquid gas pressure control dumper skip back door latch hook 3, make dumper skip before rise, open door lock hook 3, thereby can not open and close because of the Loaded goods compressing influences rear cabinet door lock hook 3, treat that dumper skip reduces to when finishing door lock hook 3 closures, close inharmonious with door lock hook 3 when avoiding railway carriage to descend and pull bar 5 takes place tear open curved and split off phenomenon, the utlity model has rational in infrastructure, control comfort and the high advantage of conveying efficiency, use on the latch hook of suitable dumping car body door.

Claims

1, a kind of dumper skip back door hydraulic pneumatic latch hook, comprise the railway carriage bottom girder, it is characterized in that: support fixedly is housed in railway carriage bottom girder rear end, this support is equipped with latch hook by being coupling, the hook end of this latch hook touches mutually with wagon backdoor bottom snap close, the other end of this latch hook is equipped with pull bar by being coupling, this pull bar links to each other with liquid cylinder.

2, dumper skip as claimed in claim 1 back door hydraulic pneumatic latch hook, it is characterized in that: described latch hook structure is to lock hook structure.

3, dumper skip as claimed in claim 1 back door hydraulic pneumatic latch hook, it is characterized in that: described liquid cylinder communicates with pilot piping.

4, dumper skip as claimed in claim 3 back door hydraulic pneumatic latch hook is characterized in that: described pilot piping is grown valve with the power takeoff electricity and is communicated.