CN203892504U - Differential lock structure for tractor front drive axle - Google Patents
Differential lock structure for tractor front drive axle Download PDFInfo
- Publication number
- CN203892504U CN203892504U CN201420271173.2U CN201420271173U CN203892504U CN 203892504 U CN203892504 U CN 203892504U CN 201420271173 U CN201420271173 U CN 201420271173U CN 203892504 U CN203892504 U CN 203892504U
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- Prior art keywords
- differential lock
- brake
- piston
- hydraulic
- driving support
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Abstract
The utility model relates to a differential lock structure for a tractor front drive axle. The differential lock structure comprises a bevel transmission support, a brake cylinder shell, a differential lock piston, a left half axle, a left half axle bevel gear, a brake hub and a differential shell. The brake cylinder shell, the differential lock piston and a first O-shaped ring form a hydraulic differential lock sealed cavity. A differential lock oil tube leads to the hydraulic differential lock sealed cavity. The brake hub is nested in the differential lock piston. When axially sliding, the brake hub connects with or disconnects with the differential shell through jaws. A brake piston, the bevel transmission support and a second O-shaped ring form hydraulic brake sealed cavities; the bevel transmission support is internally provided with an oil passage leading to left and right ones of the hydraulic brake sealed cavities; steel plates and friction plates are disposed between the brake cylinder shell and the brake piston; wave springs are mounted among the multiple pairs of steel plates; the friction plates are connected with the brake hub. The hydraulic differential lock and the hydraulic brake are combined, the defects that the existing two independent functional designs have many parts and complex structures are overcome, and the two functional designs are mutually independent.
Description
Technical field
The utility model relates to a kind of hydraulic differential lock construction of front drive axle of tractor.
Background technique
Differential lock on China's front drive axle of tractor has two kinds of structures at present, and a kind of is mechanical differential lock, and a kind of is hydraulic type differential lock.Mechanical speed difference lock is because it handles inconvenience, for the Tractor Products of low platform; Hydraulic type differential lock is due to its handiness, respond well multiplex on the Tractor Products of high platform.And major part is furnished with hydraulic brake system on the front drive axle of tractor of high platform simultaneously, differential lock for drive axles in the market all separates design with braking device, and structure is not compact.For the configuration feature of this front drive axle, design differential lock and the brake structural that a kind of structure is very compact and can well be applied to market.
Model utility content
For above-mentioned deficiency of the prior art, the utility model provides a kind of compact structure simple, convenient processing and manufacture, and hydraulic differential lock and the hydraulic brake of easy maintenance merges the differential lock structure of the front drive axle of tractor of design.
Technical solution adopted in the utility model is:
The differential lock structure of a kind of front drive axle of tractor of the present utility model, comprise cone driving support seat, be bolted the brake cylinder housing in cone driving support seat, left half axle is by the left half axle bevel gear of spline joint, with left half axle by the brake hub of spline joint, the differential casing being connected with brake hub right side by dental inlay structure, described differential lock piston is contained in brake cylinder housing and is slidably matched, and by brake cylinder housing, differential lock piston, the one O type circle forms hydraulic differential lock Seal cage, differential lock oil pipe is through cone driving support seat and brake cylinder housing, lead in hydraulic differential lock Seal cage, differential lock piston is connected with brake hub left side, the spring seat in brake hub outside, return spring, packing ring is pressed on back-up ring successively, back-up ring is contained in the groove of brake cylinder housing, brake piston is contained in cone driving support seat, and form hydraulic braking Seal cage by brake piston, cone driving support seat, the 2nd O type circle, break plug cock is arranged in cone driving support seat, in cone driving support seat, have towards the oil duct of left and right hydraulic braking Seal cage, steel disc and friction plate are housed between brake cylinder housing and brake piston successively, between multipair steel disc, wavy spring is housed, friction plate is connected with brake hub by spline.
Between described differential lock piston and brake hub, needle bearing is installed.
In described brake cylinder housing one side direction, be inserted with guide blot, and guide blot one end is inserted in the bar-shaped trough of differential lock piston.
The beneficial effect of the relative prior art of the utility model:
The utility model Combination Design hydraulic differential lock and hydraulic brake, improved that current two functional independence project organizations are heavy, many, the baroque deficiencies of amount of parts, and two functions independence mutually.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model hydraulic brake oil circuit;
Fig. 3 is the mounting structure schematic diagram of the utility model guide blot.
Critical piece symbol description in accompanying drawing:
1, left half axle 2, differential lock piston
3, an O type circle 4, needle bearing
5, spring seat 6, return spring
7, packing ring 8, back-up ring
9, brake cylinder housing 10, cone driving support seat
11, left half axle bevel gear 12, differential casing
13, brake hub 14, the 2nd O type circle
15, brake piston 16, wavy spring
17, friction plate 18, steel disc
19, differential lock oil pipe 20, guide blot
21, break plug cock 22, oil duct
23, bar-shaped trough.
Embodiment
Referring to accompanying drawing and example, the utility model is described in detail:
Fig. 1 is structural representation of the present utility model; Fig. 2 is the structural representation of the utility model hydraulic brake oil circuit; Fig. 3 is the mounting structure schematic diagram of the utility model guide blot.
As Fig. 1, 2, shown in 3, a kind of differential lock structure of front drive axle of tractor, comprise cone driving support seat 10, be bolted the brake cylinder housing 9 in cone driving support seat 10, left half axle 1 is by the left half axle bevel gear 11 of spline joint, pass through the brake hub 13 of spline joint with left half axle 1, the differential casing 12 being connected with brake hub 13 right sides by dental inlay structure, described differential lock piston 2 is contained in brake cylinder housing 9 and is slidably matched, and by brake cylinder housing 9, differential lock piston 2, the one O type circle 3 forms hydraulic differential lock Seal cage, differential lock oil pipe 19 is through cone driving support seat 10 and brake cylinder housing 9, lead in hydraulic differential lock Seal cage, differential lock piston 2 is connected with brake hub 13 left sides, the spring seat 5 in brake hub 13 outsides, return spring 6, packing ring 7 is pressed on back-up ring 8 successively, back-up ring 8 is contained in the groove of brake cylinder housing 9, brake piston 15 is contained in cone driving support seat 10, and form hydraulic braking Seal cage by brake piston 15, cone driving support seat 10, the 2nd O type circle 14, break plug cock 21 is arranged in cone driving support seat 10, in cone driving support seat 10, have towards the oil duct 22 of left and right hydraulic braking Seal cage, steel disc 18 and friction plate 17 are housed between brake cylinder housing 9 and brake piston 15 successively, between multipair steel disc 18, wavy spring 16 is housed, friction plate 17 is connected with brake hub 13 by spline.
Between described differential lock piston 2 and brake hub 13, needle bearing 4 is installed.
In described brake cylinder housing 9 one side direction, be inserted with guide blot 20, and guide blot 20 one end are inserted in the bar-shaped trough 23 of differential lock piston 2.
When the work of hydraulic differential lock, hydraulic oil is entered by brake cylinder housing 9 by differential lock oil pipe 19, differential lock piston 2, the one O type circle 3 forms hydraulic differential lock Seal cage, hydraulic oil overcomes the returning place force of return spring 6, by promoting differential lock piston 2, brake hub 13 is moved right, brake hub 13 is connected with differential casing 12 by dental inlay, now left half axle 1, brake hub 13, differential casing 12, left half axle bevel gear 11 becomes one, with same speed, be rotated, and then make right axle shaft and left half axle 1 keep same speed, play the effect of differential lock.Between differential lock piston 2 and brake hub 13, needle bearing 4 is housed, effectively protects the end face of differential lock piston 2 and brake hub 13.Guide blot 20 inserts from brake cylinder housing 9, and reaches in the bar-shaped trough 23 of differential lock piston 2, has limited like this radial rotary of differential lock piston 2, and differential lock piston 2 can only move axially, and effectively improves the working life of an O type circle 3.
When differential lock is not worked, hydraulic oil is removed, and brake hub 13 is moved to the left under the effect of return spring 6 with differential lock piston 2, and brake hub 13 and the dental inlay structure of differential casing 12 are thrown off.
When hydraulic brake is worked, brake fluid force feed is entered by brake piston 15, cone driving support seat 10, the 2nd O type circle 14 and is formed hydraulic braking Seal cage by the oil duct 22 in cone driving support seat 10 by break plug cock 21, hydraulic oil promotion brake piston 15 will be organized steel disc 18 successively, friction plate 17 is pressed on brake cylinder housing 9, brake cylinder housing 9 is bolted in cone driving support seat 10, friction plate 17 is connected with brake hub 13 by spline, brake hub 13 is connected with left half axle 1 by spline, has realized like this left half axle braking of front drive axle.The braking of front drive axle right axle shaft realizes by right side braking device, and working procedure is identical with left side braking, and brake fluid force feed oil brake plug cock 21 enters left and right braking sealing chamber by the oil duct in cone driving support seat 10 simultaneously.
When needs braking is removed, brake fluid pressure oil pressure is removed, and steel disc 18, friction plate 17, brake piston 15 are separated rapidly under the returning place force effect of wavy spring 16, and braking is removed.
The control of hydraulic differential lock and hydraulic brake fluid, respectively by being arranged on pedal or the fingertip control in operator cabin, is handled simple.
Claims (3)
1. the differential lock structure of a front drive axle of tractor, comprise cone driving support seat (10), be bolted the brake cylinder housing (9) in cone driving support seat (10), left half axle (1) is by the left half axle bevel gear (11) of spline joint, with left half axle (1) by the brake hub (13) of spline joint, the differential casing (12) being connected with brake hub (13) right side by dental inlay structure, it is characterized in that: differential lock piston (2) is contained in brake cylinder housing (9) and is slidably matched, and by brake cylinder housing (9), differential lock piston (2), the one O type circle (3) forms hydraulic differential lock Seal cage, differential lock oil pipe (19) is through cone driving support seat (10) and brake cylinder housing (9), lead in hydraulic differential lock Seal cage, differential lock piston (2) is connected with brake hub (13) left side, the spring seat (5) in brake hub (13) outside, return spring (6), packing ring (7) is pressed on back-up ring (8) successively, back-up ring (8) is contained in the groove of brake cylinder housing (9), brake piston (15) is contained in cone driving support seat (10), and by brake piston (15), cone driving support seat (10), the 2nd O type circle (14) forms hydraulic braking Seal cage, break plug cock (21) is arranged in cone driving support seat (10), in cone driving support seat (10), there is the oil duct (22) towards left and right hydraulic braking Seal cage, steel disc (18) and friction plate (17) are housed between brake cylinder housing (9) and brake piston (15) successively, wavy spring (16) is housed between multipair steel disc (18), friction plate (17) is connected with brake hub (13) by spline.
2. the differential lock structure of a kind of front drive axle of tractor according to claim 1, is characterized in that: between differential lock piston (2) and brake hub (13), needle bearing (4) is installed.
3. the differential lock structure of a kind of front drive axle of tractor according to claim 1 and 2, it is characterized in that: in brake cylinder housing (9) one side direction, be inserted with guide blot (20), and guide blot (20) one end is inserted in the bar-shaped trough (23) of differential lock piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271173.2U CN203892504U (en) | 2014-05-26 | 2014-05-26 | Differential lock structure for tractor front drive axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271173.2U CN203892504U (en) | 2014-05-26 | 2014-05-26 | Differential lock structure for tractor front drive axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203892504U true CN203892504U (en) | 2014-10-22 |
Family
ID=51718912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420271173.2U Active CN203892504U (en) | 2014-05-26 | 2014-05-26 | Differential lock structure for tractor front drive axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203892504U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482163A (en) * | 2014-11-28 | 2015-04-01 | 长城汽车股份有限公司 | Locking differential and automobile |
| WO2016045486A1 (en) * | 2014-09-23 | 2016-03-31 | 北汽福田汽车股份有限公司 | Running brake system and vehicle |
| CN108953538A (en) * | 2018-08-22 | 2018-12-07 | 柳工柳州传动件有限公司 | Main gearbox assembly and drive axle |
| CN110425265A (en) * | 2019-07-19 | 2019-11-08 | 金华市安索传动科技有限公司 | A kind of axis actuator and differential mechanism |
-
2014
- 2014-05-26 CN CN201420271173.2U patent/CN203892504U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016045486A1 (en) * | 2014-09-23 | 2016-03-31 | 北汽福田汽车股份有限公司 | Running brake system and vehicle |
| CN104482163A (en) * | 2014-11-28 | 2015-04-01 | 长城汽车股份有限公司 | Locking differential and automobile |
| CN108953538A (en) * | 2018-08-22 | 2018-12-07 | 柳工柳州传动件有限公司 | Main gearbox assembly and drive axle |
| CN110425265A (en) * | 2019-07-19 | 2019-11-08 | 金华市安索传动科技有限公司 | A kind of axis actuator and differential mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261206 Beihai South Road, Fangzi District, Shandong, No. 192, No. Patentee after: LOVOL HEAVY INDUSTRY CO., LTD. Address before: 261206 Beihai South Road, Fangzi District, Shandong, No. 192, No. Patentee before: Futian Leiwo International Heavy Industry Co., Ltd. |