CN102229322A - Differential lock manipulator of tractor - Google Patents
Differential lock manipulator of tractor Download PDFInfo
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- CN102229322A CN102229322A CN2011101325365A CN201110132536A CN102229322A CN 102229322 A CN102229322 A CN 102229322A CN 2011101325365 A CN2011101325365 A CN 2011101325365A CN 201110132536 A CN201110132536 A CN 201110132536A CN 102229322 A CN102229322 A CN 102229322A
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Abstract
The invention relates to a differential lock manipulator of a tractor, which comprises a rear-axle shell, a left bearing block of a differential mechanism, a left bearing of the differential mechanism, a right bearing of the differential mechanism, an oil cylinder assembly, a thrust disc package, the differential mechanism and the like; the left bearing and the right bearing of the differential mechanism are respectively mounted onto the externally cylindrical surfaces of both ends of the differential mechanism in a pressing way and are in contact with ledges of both ends of the differential mechanism; an adjusting washer is sheathed on the externally cylindrical surface of the left bearing block of the differential mechanism and is fixed inside the rear-axle shell by bolts; the differential mechanism is installed so as to enable the end surface of the left bearing of the differential mechanism to lean against the ledge of an inner hole of the left bearing block of the differential mechanism; the thrust disc package is arranged on a cover plate of the differential mechanism so that a thrust pin on the thrust disc package is in contact with a differential lock pressing disc; a bearing spacer bush is arranged in an inner hole of the oil cylinder assembly so that the inner hole of the oil cylinder assembly is directed at the cylindrical surface of an outer ring of the right bearing of the differential mechanism; the oil cylinder assembly is fixed inside the rear-axle shell by an oil tank fastening screw; and a bearing pretightening ring is screwed into the oil cylinder assembly to push the bearing spacer bush so as to ensure that the bearings at both ends of the differential mechanism are pretightened and then are locked by a locking ring.
Description
Technical field
The invention belongs to the trac. field, relate to a kind of trac. differential lock operating device
Background technology
At present, at home on the high and medium power trac. of the various models of Sheng Chaning, the general employing of the differential lock operating device that is disposed has two kinds of patterns: a kind of is the maneuverability pattern of mechanical lever, and this mode not only needs actuating force big, and arrangements of components is also more numerous and diverse; Another kind is the mode that adopts hydraulic ram to handle, this mode all needs the seal form of rotating seal as oil circuit on the control oil channel of oil cylinder, the control presssure of oil circuit, the linear velocity of revolving part circumference all is restricted, inevitably there is leakage in control oil channel, and the cleanliness level of oil circuit is difficult to guarantee.At the market status of present China trac. product, pressing for development, a kind of to handle light, no leak, can adopt live hydraulic system be the trac. differential lock operating device that oil cylinder fuel feeding, oil cleanliness guarantee easily.
Summary of the invention
The object of the present invention is to provide a kind of relatively simple for structure, easy to use and reliable, no leak, can adopting live hydraulic system is the trac. differential lock operating device that oil cylinder fuel feeding, oil cleanliness guarantee easily.
Technical scheme of the present invention is: a kind of trac. differential lock operating device comprises: rear axle housing body, differential left bearing seat, differential left bearing, diff right bearing, bearing spacer, bearing pre-tightened ring, binding ring, oil cylinder fix screw, hydraulic cylinder assembly, thrust disc component, diff, bearing cap shim; Differential left bearing and diff right bearing are press fit into respectively on the external cylindrical surface at diff two ends, and contact with diff two ends shoulder; To put bearing cap shim on the differential left bearing seat external cylindrical surface and the differential left bearing seat is fixed in the hole of rear axle housing body with bolt, then with the endoporus of differential left bearing top circle in the face of accurate differential left bearing seat, the diff of packing into leans against on the shoulder of differential left inner hole of bearing seat the end face of differential left bearing; Again the thrust pin on the thrust disc component is aimed at the thrust pin mounting hole of the diff cover plate on the diff, on the diff cover plate of diff, loaded onto the thrust disc component, the interior differential locking-device platen end face of thrust pin and diff on the thrust disc component is contacted; The bearing spacer of packing in the hydraulic cylinder assembly endoporus is aimed at the endoporus of hydraulic cylinder assembly diff right bearing outer ring cylinder, with the oil cylinder fix screw hydraulic cylinder assembly is fixed in the rear axle housing body; The bearing pre-tightened ring is screwed in the hydraulic cylinder assembly, promote the bearing spacer, withstand on the cycle surface of diff right bearing, make differential left bearing and diff right bearing pretension, with binding ring it is locked again, make diff in rear axle housing body, end float misalignment must not be arranged.
The outer ring of the cone bearing in the hydraulic cylinder assembly is pressed in the middle of the endoporus of piston, and leans against on the shoulder of endoporus of piston; Suit upper sealing ring on the sealed groove of the external cylindrical surface of piston; Piston is packed in the cylinder body, and piston can move freely in cylinder body, rotates; Again the oil cylinder piston baffle ring is packed in the annular groove of cylinder body.
Four to eight thrust pins in the thrust disc component are fitted in the cylindrical hole that is uniformly distributed along the circumference on the thrust disc end face, are press fit into that the end face of all thrust pins must be in the same plane mutually behind the end.
The left half axle gear of diff puts the axle side gear pad packs in the hole of differential casing, and leans against on the end face of differential gear box intracoelomic cavity; Planetary wheel thrust washer, planetary endoporus are alignd with compensating-gear shaft mounting hole on the differential casing, make the engagement of planetary wheel and left half axle gear simultaneously, four planetary wheel thrust washers, four planetary wheels are packed in the differential casing; Compensating-gear shaft and planetary wheel axle sleeve, planetary wheel stepped shaft are in the mounting hole of compensating-gear shaft that right-angled crossing penetrates differential casing, planetary wheel axle sleeve, planetary wheel stepped shaft, with the compensating-gear shaft bolt of rear end plate planetary wheel axle sleeve, planetary wheel stepped shaft are fixed on the differential casing, thus planetary wheel are fixed in the differential casing; The right axle shaft gear of in differential casing, packing into, and make the planetary wheel in right axle shaft gear and the differential casing keep engagement simultaneously; On the external cylindrical surface of right axle shaft gear, put the axle side gear pad, and lean against on the end face of right axle shaft gear; The resilient pin of packing in the cooresponding resilient pin mounting hole in differential casing puts the differential locking-device pull back spring; Make the tooth alignment differential casing of differential locking-device friction disc, differential locking-device platen, the alveolus of right axle shaft gear, alternately put into differential casing then successively; With the diff cover plate seam on the periphery aligning differential casing of diff cover plate, the inner headed face of diff cover plate is aimed at right axle shaft gear in-to-in external cylindrical surface, with bolt the diff cover plate is fixed in the differential casing.Bevel gear wheel is set on the external cylindrical surface of differential casing, and bevel gear wheel is fixed on the flange face of differential casing with bolt.
Adopt the present invention can reach following good effect: because oil cylinder piston is by the isolation of cone bearing, do not rotate in the middle of the use, on the oil circuit that promotes oil cylinder piston, do not need rotating seal, can adopt live hydraulic system is the oil cylinder fuel feeding, the hydraulic oil no leak, the problem that does not exist oil cleanliness to be difficult to guarantee, the charge oil pressure of oil cylinder is not subjected to the restriction of rotating seal, is not subjected to the restriction of rotating seal peripheral velocity allowable yet, uses reliable.This kind differential lock operating device can widespread use on trac..
Description of drawings
Fig. 1 is the structural representation of a kind of trac. differential lock operating device of the present invention.
Fig. 2 is the hydraulic cylinder assembly structural representation of a kind of trac. differential lock operating device of the present invention.
Fig. 3 is the thrust disc component structural representation of a kind of trac. differential lock operating device of the present invention.
Fig. 4 is the differential design scheme drawing of a kind of trac. differential lock operating device of the present invention.
The specific embodiment
The invention will be further described below in conjunction with accompanying drawing.As shown in Figure 1, the trac. differential lock operating device mainly comprises: rear axle housing body 1, differential left bearing seat 2, differential left bearing 3, diff right bearing 18, bearing spacer 19, bearing pre-tightened ring 20, binding ring 21, oil cylinder fix screw 26, hydraulic cylinder assembly 27, thrust disc component 29, diff 32, bearing cap shim 36.Differential left bearing 3 and diff right bearing 18 are press fit into respectively on the external cylindrical surface at diff 32 two ends, and contact with diff 32 two ends shoulders; To put bearing cap shim 36 on differential left bearing seat 2 external cylindrical surfaces and differential left bearing seat 2 is fixed in the hole of rear axle housing body 1 with bolt, then differential left bearing 3 peripheries are aimed at the endoporus of diff left shaft holder 2, the diff 32 of packing into leans against on the shoulder of differential left bearing seat 2 endoporus the end face of differential left bearing 3; Again the thrust pin on the thrust disc component 29 31 is aimed at thrust pin 31 mounting holes of the diff cover plate 17 on the diff 32, on the diff cover plate 17 of diff 32, load onto thrust disc component 29, differential locking-device platen 14 end faces in thrust pin 31 and the diff 32 on the thrust disc component 29 are contacted; The bearing spacer 19 of packing in hydraulic cylinder assembly 27 endoporus is aimed at hydraulic cylinder assembly 27 endoporus diff right bearing 18 outer ring cylinders, with oil cylinder fix screw 26 hydraulic cylinder assembly 27 is fixed in the rear axle housing body 1.Bearing pre-tightened ring 20 is screwed in the hydraulic cylinder assembly 27, promote bearing spacer 19, withstand on the cycle surface of diff right bearing 18, make differential left bearing 3 and diff right bearing 18 pretensions, use binding ring 21 with its locking again, make diff 32 in rear axle housing body 1, end float misalignment must not be arranged.
As shown in Figure 2, hydraulic cylinder assembly 27 of the present invention comprises: cone bearing 22, cylinder body 23, seal ring 24, piston 25, oil cylinder piston baffle ring 28.The outer ring of cone bearing 22 is pressed in the middle of the endoporus of piston 25, and leans against on the shoulder of endoporus of piston 25; Suit upper sealing ring 24 on the sealed groove of the external cylindrical surface of piston 25; Piston 25 is packed in the cylinder body 23, and piston 25 can move freely, rotates in cylinder body 23; Again oil cylinder piston baffle ring 28 is packed in the annular groove of cylinder body 23.
As shown in Figure 3, thrust disc component 29 of the present invention comprises thrust disc 30, thrust pin 31.Six thrust pins 31 are fitted in the cylindrical hole that is uniformly distributed along the circumference on thrust disc 30 end faces, and are pressed onto the end, the end face that press-fits all thrust pins of back must be in the same plane mutually.
As shown in Figure 4, diff 32 of the present invention comprises: differential casing 4, left half axle gear 5, axle side gear pad 6, compensating-gear shaft bolt of rear end plate 7, planetary wheel 8, planetary wheel axle sleeve 9, planetary wheel stepped shaft 10, bevel gear wheel 11, differential locking-device pull back spring 12, differential locking-device friction disc 13, differential locking-device platen 14, axle side gear pad 15, right axle shaft gear 16, diff cover plate 17, planetary wheel thrust washer 33, compensating-gear shaft 34, resilient pin 35.Left half axle gear 5 is put axle side gear pad 6 pack in the hole of differential casing 4, and lean against on the end face of differential casing 4 inner chambers; The endoporus of planetary wheel thrust washer 33, planetary wheel 8 is alignd with compensating-gear shaft 34 mounting holes on the differential casing 4, make planetary wheel 8 and left half axle gear 5 engagements simultaneously, four planetary wheel thrust washers 33, four planetary wheels 8 are packed in the differential casing 4; Compensating-gear shaft 34 and planetary wheel axle sleeve 9, planetary wheel stepped shaft 10 are in the mounting hole of compensating-gear shaft 34 that right-angled crossing penetrates differential casing 4, planetary wheel axle sleeve 9, planetary wheel stepped shaft 10, with compensating-gear shaft bolt of rear end plate 7 planetary wheel axle sleeve 9, planetary wheel stepped shaft 10 are fixed on the differential casing 4, thus, planetary wheel 8 is fixed in the differential casing 4; The right axle shaft gear 16 of in differential casing 4, packing into, and make right axle shaft gear 16 and planetary wheel 8 in the differential casing 4 keep simultaneously meshing; On the external cylindrical surface of right axle shaft gear 16, put axle side gear pad 15, and lean against on the end face of right axle shaft gear 16; The resilient pin 35 of packing in cooresponding resilient pin 35 mounting holes in differential casing 4 puts differential locking-device pull back spring 12; Make the tooth alignment differential casing 4 of differential locking-device friction disc 13, differential locking-device platen 14, the alveolus of right axle shaft gear 16, alternately put into differential casing 4 then successively; With diff cover plate 17 seams on the periphery aligning differential casing 4 of diff cover plate 17, the inner headed face of diff cover plate 17 is aimed at right axle shaft gear 16 in-to-in external cylindrical surfaces, with bolt diff cover plate 17 is fixed in the differential casing 4.Bevel gear wheel 11 is set on the external cylindrical surface of differential casing 4, and bevel gear wheel 11 is fixed on the flange face of differential casing 4 with bolt.
When handling the trac. differential lock operating device, fuel feed hole A to hydraulic cylinder assembly 27 injects hydraulic oil, pressure promotion piston 25 by hydraulic oil moves, piston 25 promotes cone bearing 22 more successively, all the time Xuan Zhuan thrust disc component 29, overcome the spring force that acts on the differential locking-device friction lining platen 14, promote differential locking-device friction lining platen 14 again, differential locking-device friction disc 13, with differential locking-device friction lining platen 14, differential locking-device friction disc 13 is pressed on the differential casing 4, by the external tooth of friction lining platen 14, the female splines of differential locking-device friction disc 13, and then make differential casing 4 with differential left axle side gear 5, right axle shaft gear 16 is done as a whole synchronous rotation.When the pressure in the hydraulic cylinder assembly 27 is removed, under the effect of differential locking-device pull back spring 12 spring forces, promote differential locking-device friction lining platen 19, rest on diff cover plate 17 end faces of diff 32, corresponding to differential locking-device friction lining platen 14 promotion thrust disc components 29, cone bearing 22, piston 25 resets.Differential locking-device friction lining platen 19 in the diff 32, differential locking-device friction disc 13 separates, and the left half axle gear 5 of diff, right axle shaft gear 16 can the friction speed rotations.
Claims (4)
1. a trac. differential lock operating device comprises: rear axle housing body (1), differential left bearing seat (2), differential left bearing (3), diff right bearing (18), bearing spacer (19), bearing pre-tightened ring (20), binding ring (21), oil cylinder fix screw (26), hydraulic cylinder assembly (27), thrust disc component (29), diff (32), bearing cap shim (36); It is characterized in that: differential left bearing (3) and diff right bearing (18) are press fit into respectively on the external cylindrical surface at diff (32) two ends, and contact with diff (32) two ends shoulder; To put bearing cap shim (36) on differential left bearing seat (2) external cylindrical surface and differential left bearing seat (2) is fixed in the hole of rear axle housing body (1) with bolt, then differential left bearing (3) periphery is aimed at the endoporus of diff left shaft holder (2), the diff (32) of packing into leans against on the shoulder of differential left bearing seat (2) endoporus the end face of differential left bearing (3); Again the thrust pin (31) on the thrust disc component (29) is aimed at thrust pin (31) mounting hole of the diff cover plate (17) on the diff (32), on the diff cover plate (17) of diff (32), load onto thrust disc component (29), differential locking-device platen (14) end face in thrust pin (31) and the diff (32) on the thrust disc component (29) is contacted; The bearing spacer (19) of packing in hydraulic cylinder assembly (27) endoporus is aimed at the endoporus of hydraulic cylinder assembly (27) diff right bearing (18) outer ring cylinder, with oil cylinder fix screw (26) hydraulic cylinder assembly (27) is fixed in the rear axle housing body (1); Bearing pre-tightened ring (20) is screwed in the hydraulic cylinder assembly (27), promote bearing spacer (19), withstand on the cycle surface of diff right bearing (18), make differential left bearing 3 and diff right bearing (18) pretension, use binding ring (21) with its locking again, make diff (32) in rear axle housing body (1), end float misalignment must not be arranged.
2. a kind of trac. differential lock operating device according to claim 1 is characterized in that: the outer ring of the cone bearing (22) in the hydraulic cylinder assembly (27) is pressed in the middle of the endoporus of piston (25), and leans against on the shoulder of endoporus of piston (25); Suit upper sealing ring (24) on the sealed groove of the external cylindrical surface of piston (25); Piston (25) is packed in the cylinder body (23), and piston (25) can move freely, rotates in cylinder body (23); Again oil cylinder piston baffle ring (28) is packed in the annular groove of cylinder body (23).
3. a kind of trac. differential lock operating device according to claim 1, it is characterized in that: four to eight thrust pins (31) in the thrust disc component (29) are fitted in the cylindrical hole that is uniformly distributed along the circumference on thrust disc (30) end face, are press fit into that the end face of all thrust pins (31) must be in the same plane mutually behind the end.
4. a kind of trac. differential lock operating device according to claim 1, it is characterized in that: the left half axle gear (5) of diff (32) puts axle side gear pad (6) packs in the hole of differential casing (4), and leans against on the end face of differential casing (4) inner chamber; The endoporus of planetary wheel thrust washer (33), planetary wheel (8) is alignd with compensating-gear shaft (34) mounting hole on the differential casing (4), make the engagement of planetary wheel (8) and left half axle gear (5) simultaneously, four planetary wheel thrust washers (33), four planetary wheels (8) are packed in the differential casing (4); Compensating-gear shaft (34) and planetary wheel axle sleeve (9), planetary wheel stepped shaft (10) are in the mounting hole of compensating-gear shaft (34) that right-angled crossing penetrates differential casing (4), planetary wheel axle sleeve (9), planetary wheel stepped shaft (10), with compensating-gear shaft bolt of rear end plate (7) planetary wheel axle sleeve (9), planetary wheel stepped shaft (10) are fixed on the differential casing (4), thus planetary wheel (8) are fixed in the differential casing (4); The right axle shaft gear (16) of in differential casing (4), packing into, and make right axle shaft gear (16) and planetary wheel (8) in the differential casing (4) keep simultaneously meshing; On the external cylindrical surface of right axle shaft gear (16), put axle side gear pad (15), and lean against on the end face of right axle shaft gear (16); The resilient pin (35) of packing in cooresponding resilient pin (35) mounting hole in differential casing (4) puts differential locking-device pull back spring (12); Make the tooth alignment differential casing (4) of differential locking-device friction disc (13), differential locking-device platen (14), the alveolus of right axle shaft gear (16), alternately put into differential casing (4) then successively; With diff cover plate (17) seam on the periphery aligning differential casing (4) of diff cover plate (17), the inner headed face of diff cover plate (17) is aimed at right axle shaft gear (16) in-to-in external cylindrical surface, with bolt diff cover plate (17) is fixed in the differential casing (4); Bevel gear wheel (11) is set on the external cylindrical surface of differential casing (4), and bevel gear wheel (11) is fixed on the flange face of differential casing (4) with bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101325365A CN102229322A (en) | 2011-05-23 | 2011-05-23 | Differential lock manipulator of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101325365A CN102229322A (en) | 2011-05-23 | 2011-05-23 | Differential lock manipulator of tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102229322A true CN102229322A (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101325365A Pending CN102229322A (en) | 2011-05-23 | 2011-05-23 | Differential lock manipulator of tractor |
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| Country | Link |
|---|---|
| CN (1) | CN102229322A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05221250A (en) * | 1992-02-10 | 1993-08-31 | Hino Motors Ltd | Limited differential gear |
| EP1557314A2 (en) * | 2004-01-22 | 2005-07-27 | Magna Drivetrain of America, Inc. | Transfer case with electrohydraulic clutch actuator |
| CN201281119Y (en) * | 2008-07-28 | 2009-07-29 | 湖北三江航天万山特种车辆有限公司 | Friction plate clutch type sliding-limiting differential |
| CN101737478A (en) * | 2010-02-05 | 2010-06-16 | 浙江理工大学 | Driving limited-slip differential |
| CN101793317A (en) * | 2010-04-02 | 2010-08-04 | 浙江理工大学 | Hydraulic limited slip differential |
| CN202065442U (en) * | 2011-05-23 | 2011-12-07 | 中国一拖集团有限公司 | Differential lock control device of tractor |
-
2011
- 2011-05-23 CN CN2011101325365A patent/CN102229322A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05221250A (en) * | 1992-02-10 | 1993-08-31 | Hino Motors Ltd | Limited differential gear |
| EP1557314A2 (en) * | 2004-01-22 | 2005-07-27 | Magna Drivetrain of America, Inc. | Transfer case with electrohydraulic clutch actuator |
| CN201281119Y (en) * | 2008-07-28 | 2009-07-29 | 湖北三江航天万山特种车辆有限公司 | Friction plate clutch type sliding-limiting differential |
| CN101737478A (en) * | 2010-02-05 | 2010-06-16 | 浙江理工大学 | Driving limited-slip differential |
| CN101793317A (en) * | 2010-04-02 | 2010-08-04 | 浙江理工大学 | Hydraulic limited slip differential |
| CN202065442U (en) * | 2011-05-23 | 2011-12-07 | 中国一拖集团有限公司 | Differential lock control device of tractor |
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Application publication date: 20111102 |