CN202463578U

CN202463578U - Hydraumatic-power-assisted tractor clutch controlling mechanism

Info

Publication number: CN202463578U
Application number: CN2012200160257U
Authority: CN
Inventors: 张继勋; 李建启; 王志全; 彭恩波; 杨述庆; 朱晓岩; 王远富; 李国平; 邢来章; 田艳丽
Original assignee: Foton Lovol International Heavy Industries Co Ltd
Current assignee: Lovol Heavy Industry Co Ltd
Priority date: 2012-01-15
Filing date: 2012-01-15
Publication date: 2012-10-03
Anticipated expiration: 2022-01-15

Abstract

The utility model discloses a hydraumatic-power-assisted tractor clutch controlling mechanism which comprises a clutch pedal, wherein the clutch pedal is provided with a return spring and a connecting rod; a booster pump is arranged on the lower part of the clutch pedal; the piston of the booster is connected with the connecting rod; the booster pump is provided with an oil inlet pipe, an oil return pipe and an oil outlet pipe; the oil inlet pipe and the oil return pipe are respectively communicated with a hydraumatic steering oil return pipeline; the oil inlet pipe is provided with a control valve; the oil outlet pipe is connected with a thrust oil cylinder through an oil delivering hose; the piston rod of the thrust oil cylinder is connected with a clutch separation mechanism the assisted power of which is provided by hydraumatic oil entering from the oil inlet pipe of the booster pump, so that the control of the clutch can be realized, the operating force of a driver is reduced, and the comfort level of the operation is enhanced.

Description

Tractor clutch's steering unit of band hydraulic booster

Technical field

The utility model relates to the Clutch Technology field, relates in particular to a kind of tractor clutch's steering unit with hydraulic booster.

Background technology

At present; What the clutch release system of a lot of trac.s adopted all is the mechanical type steering unit, along with improving constantly of trac. power, also high more to the torque-transfer capability requirement of power-transfer clutch; Strengthen the coefficient of torque reserve of power-transfer clutch; Usually adopt and strengthen the clutch-lining diameter and strengthen two kinds of methods of disk spring thrust, but because structural limitations, the space that the clutch-lining diameter can strengthen is very limited; Therefore often adopt the method that strengthens the disk spring thrust to improve clutch torque reserve factor; The increase of disk spring thrust has caused the pedal of clutch actuating force heavy, has increased the labour intensity of chaufeur, greatly reduces the handling comfort of trac..

The utility model content

The utility model technical matters to be solved is: a kind of tractor clutch's steering unit with hydraulic booster is provided, not only can strengthens the coefficient of torque reserve of power-transfer clutch, and have good handling comfort.

For solving the problems of the technologies described above, the technical scheme of the utility model is: tractor clutch's steering unit of hydraulic booster comprises pedal of clutch; Said pedal of clutch is connected with an end of pull back spring and pipe link respectively; The downstream of said pedal of clutch are provided with boost pump, and the piston of said boost pump connects the other end of said pipe link, and said boost pump is provided with oil inlet, oil return pipe and oil outlet pipe; Said oil inlet and oil return pipe are communicated with the fluid-link steering oil return line of trac. respectively; Said oil inlet place is provided with control cock, and said oil outlet pipe is connected with push action cylinder through oil hose, and the piston rod of said push action cylinder connects clutch release mechanism.

After having adopted technique scheme, the beneficial effect of the utility model is: owing to be provided with boost pump in the downstream position of pedal of clutch, boost pump provides pressure by the fluid-link steering oil return line of trac.; And the oil outlet of boost pump connects push action cylinder through oil hose; The piston rod of push action cylinder is connected again on the clutch release mechanism, and then when the chaufeur let slip the clutch, at first the piston to boost pump provides thrust; Utilize control cock that the oil inlet of boost pump is opened simultaneously; Pressure oil in the fluid-link steering oil return line of trac. is got in the boost pump, to the piston of boost pump augmented thrust is provided, and then the hydraulic oil in the boost pump is got in the push action cylinder; Finally utilize the piston rod of push action cylinder to promote clutch release mechanism, disengage the clutch.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Accompanying drawing is the structural representation of the utility model embodiment;

Among the figure: 1. pedal of clutch; 2. pull back spring; 3. pipe link; 4. boost pump; 5. oil inlet; 6. oil return pipe; 7. oil outlet pipe; 8. oil hose; 9. push action cylinder; 91. piston rod; 10. clutch release mechanism.

The specific embodiment

Shown in accompanying drawing, be a kind of embodiment of tractor clutch's steering unit of band hydraulic booster, this mechanism comprises pedal of clutch 1, the boost pump 4 that plays the power-assisted effect and the push action cylinder 9 that is arranged in the operator's compartment, and clutch release mechanism 10.

Said pedal of clutch 1 is arranged in the operator's compartment; Said pedal of clutch 1 is connected to an end of pull back spring 2 and pipe link 3; Said boost pump 4 is arranged on the downstream of said pedal of clutch 1, and the piston of said boost pump 4 connects the other end of said pipe link 3, on said boost pump 4, is connected with oil inlet 5, oil return pipe 6 and oil outlet pipe 7; The fluid-link steering oil return line of said oil inlet 5 and oil return pipe 6 connection trac.s; Simultaneously be provided with the control cock (not shown) at said oil inlet 5 places, said oil outlet pipe 7 is communicated with said push action cylinder 9 through oil hose 8, and the piston rod 91 of said push action cylinder 9 connects said clutch release mechanism 10; Clutch release mechanism 10 described herein is the known technology in the present technique field, and its structure repeats no more at this.

The principle of work of this steering unit is:

When pedal of clutch 1 was not operated, said control cock was in closed state, and the hydraulic oil in the fluid-link steering oil return line can not get in the said boost pump 4.

When chaufeur disengage the clutch 1; Can produce thrust to the piston of boost pump 4 through said pipe link 3, said control cock is opened simultaneously, and oil inlet 5 is open-minded; Pressure oil in the fluid-link steering oil return line of trac. just enters into boost pump 4; Piston to boost pump 4 produces auxiliary thrust, is the size of may command control cock unlatching and the oil-feed speed of oil inlet 5 through the pedal force of controlling pedal of clutch 1, and then the control input pressure; Hydraulic oil in the boost pump 4 enters into push action cylinder 9 from oil outlet pipe 7 through oil hose 8 in the process that piston moves, and promote piston rod 91 and move, and then through being connected in the separation of the clutch release mechanism 10 realization power-transfer clutchs on the piston rod 91.

When chaufeur stopped to move, said oil inlet 5 was closed with oil outlet pipe 7, to keep the pressure in the boost pump 4, makes mechanism be in state of equilibrium, if once more pedal of clutch 1 is exerted pressure, boost pump 4 just repeats above-mentioned action, plays the power-assisted effect.

When chaufeur engage the clutch 1; Pedal of clutch 1 return under the effect of pull back spring 2, boost pump 4 seal oil inlet 5 under the reaction pressure of output oil pressure, open oil return pipe 6; Unnecessary hydraulic oil returns in the fluid-link steering oil return line of trac. in the pipeline; This moment, power-transfer clutch began to combine, and the openings of sizes of the speed-controllable system of the lifting oil return pipe 6 through control clutch pedal 1, and then the speed of control clutch combination.

The utility model is not limited to the above-mentioned specific embodiment, and all are based on the technical conceive of the utility model, and the structural improvement of having done all falls among the protection domain of the utility model.

Claims

1. be with tractor clutch's steering unit of hydraulic booster; Comprise pedal of clutch, said pedal of clutch is connected with an end of pull back spring and pipe link respectively, and it is characterized in that: the downstream of said pedal of clutch are provided with boost pump; The piston of said boost pump connects the other end of said pipe link; Said boost pump is provided with oil inlet, oil return pipe and oil outlet pipe, and said oil inlet and oil return pipe are communicated with the fluid-link steering oil return line of trac. respectively, and said oil inlet place is provided with control cock; Said oil outlet pipe is connected with push action cylinder through oil hose, and the piston rod of said push action cylinder connects clutch release mechanism.