CN201241946Y

CN201241946Y - Hydraulic differential lock for tractor

Info

Publication number: CN201241946Y
Application number: CNU2008201486093U
Authority: CN
Inventors: 武辉; 耿彤; 康华; 刘月在; 宋晓艳; 王凯亮; 张志伟; 吴军
Original assignee: Yto (luoyang) Kintra Equipment Science & Technology Co Ltd
Current assignee: YTO (Luoyang) Axle Co., Ltd.
Priority date: 2008-08-19
Filing date: 2008-08-19
Publication date: 2009-05-20
Anticipated expiration: 2018-08-19

Abstract

The utility model relates to a hydraulic differential lock of a tractor, which comprises a conical support casing, an oil inlet, a piston, a sealing ring, a spring, a bearing block ring, a bearing regulating cushion, a retainer ring, a differential mechanism casing and a half-shaft gear, wherein a half clutch and the half shaft gear are connected into one body by a splined shaft, a washer is arranged between the piston and the half clutch, and the retainer ring for a shaft and a lock washer are mounted on the half clutch in turn, the piston is arranged in the conical support casing, which is matched with the conical support casing in a sliding way. The bearing block ring, the bearing regulating cushion and the retainer ring are mounted on the upper portion of the half clutch in turn. The spring is arranged between the bearing block ring and the piston, and a guide pin is arranged on the conical support casing to be matched with the piston in a sliding way. The oil inlet is arranged on the conical support casing. When in a working state, hydraulic oil pushes the piston through the oil inlet, and a piston compression spring and the conical support casing relatively slide, the half clutch and the differential mechanism are locked to lead the differential mechanism to lose the differential function. The piston withdraws to an original site under the function of the spring under when fluid pressure is released, and the differential mechanism restores the differential function.

Description

The tractor hydraulic differential lock

(1), technical field:

The utility model belongs to the tractor field, relates to a kind of tractor hydraulic differential lock.

(2), background technique:

Widely used on China's tractor product at present is pin-type load differential lock and castellated differential lock, and its locking form is mechanical structure, the pilot control inconvenience.Also occurred the hydraulic type differential lock in recent years, its oil circuit is positioned on the differential casing, has brought inconvenience for processing and casting.Therefore need be a kind of simple in structure, convenient processing and manufacture, the good hydraulic differential lock of using effect are used and market.

(3), summary of the invention:

The purpose of this utility model is to provide that a kind of functional reliability is good, simple in structure, cost is lower, uses easy to maintenancely, can strengthen the tractor hydraulic differential lock of tractor passing capacity.

The technical solution of the utility model: the tractor hydraulic differential lock comprises awl bearing housing 1, filler opening 2, piston 6, seal ring 10, spring 11, bearing race 12, bearing spacer 13, back-up ring 14, differential casing 15, differential gear 16.It is characterized in that: half-clutch device 3 and differential gear 16 connect into an integral body by splined shaft, packing ring 9 is between piston 6 and half-clutch device 3, shaft block ring 4, lock washer 5 are installed on the half-clutch device 3 successively, and piston 6 is positioned at awl bearing housing 1 inside, are slidingly matched with awl bearing housing 1.Bearing race 12, bearing spacer 13, back-up ring 14 are installed on half-clutch device 3 tops successively, and the upper end is spacing with back-up ring 14.Spring 11 is between bearing race 12 and piston 6, and

seal ring

7,10 is between piston 6 and awl bearing housing 1, and guide finger 8 is positioned on the awl bearing housing 1 and is slidingly matched with piston 6.Filler opening 2 is arranged on the awl bearing housing 1, and differential casing 15 is positioned at awl bearing housing 1 inside.

The beneficial effect that the utility model can reach:

1, solved the shortcoming that common symmetric type circular cone planetary differential skids easily because of locking coefficient is low, improved anti-slide performance, stopped tractor and contingently skidded, fall into the car problem.

2, safe in utilization, reliable, simple in structure, easy to operate.

(4) description of drawings:

Fig. 1 is the utility model tractor hydraulic differential lock structural representation.

(5) embodiment:

As shown in Figure 1: tractor hydraulic differential lock main parts size is: awl bearing housing 1, filler opening 2, half-clutch device 3, shaft block ring 4, lock washer 5, piston 6, seal ring 7, guide finger 8, packing ring 9, seal ring 10, spring 11, bearing race 12, bearing spacer 13, back-up ring 14, differential casing 15, differential gear 16.Half-clutch device 3 and differential gear 16 connect into an integral body by splined shaft, packing ring 9 is between piston 6 and half-clutch device 3, shaft block ring 4, lock washer 5 are installed on the half-clutch device 3 successively, under the effect of spring force half-clutch device 3 and piston 6 are constrained to an integral body.Piston 6 is positioned at awl bearing housing 1 inside, is slidingly matched with awl bearing housing 1.Bearing race 12, bearing spacer 13, back-up ring 14 are installed on half-clutch device 3 tops successively, and the upper end is spacing with back-up ring 14.Spring 11 is between bearing race 12 and piston 6, and

seal ring

7,10 seals between piston 6 and awl bearing housing 1.Guide finger 8 is positioned on the awl bearing housing 1 and is slidingly matched with piston 6.Filler opening 2 is arranged on the awl bearing housing 1, and differential casing 15 is positioned at awl bearing housing 1 inside.

During the work of differential lock device, under the effect of hydraulic coupling, hydraulic oil promotes piston 6 by filler opening 2, and piston 6 pressure springs 11 produce relative slippage with awl bearing housing 1, with half-clutch device 3 and differential casing 15 interlockings, makes differential mechanism lose differential action.Under the effect of spring 11, piston 6 was return original position when hydraulic pressure loosened, and differential mechanism recovers differential function.

Claims

1. tractor hydraulic differential lock, comprise awl bearing housing (1), filler opening (2), piston (6), seal ring (10), spring (11), bearing race (12), bearing spacer (13), back-up ring (14), differential casing (15), differential gear (16), it is characterized in that: half-clutch device (3) and differential gear (16) connect into an integral body by splined shaft, packing ring (9) is positioned between piston (6) and the half-clutch device (3), shaft block ring (4), lock washer (5) is installed on the half-clutch device (3) successively, piston (6) is positioned at awl bearing housing (1) inside, be slidingly matched with awl bearing housing (1), bearing race (12), bearing spacer (13), back-up ring (14) is installed on half-clutch device (3) top successively, the upper end is spacing with back-up ring (14), spring (11) is positioned between bearing race (12) and the piston (6), seal ring (7,10) be positioned between piston (6) and the awl bearing housing (1), guide finger (8) is positioned on the awl bearing housing (1) and piston (6) is slidingly matched, filler opening (2) is arranged on the awl bearing housing (1), and differential casing (15) is positioned at awl bearing housing (1) inside.