CN202220839U - Self-locking differential - Google Patents

Self-locking differential Download PDF

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Publication number
CN202220839U
CN202220839U CN 201120344209 CN201120344209U CN202220839U CN 202220839 U CN202220839 U CN 202220839U CN 201120344209 CN201120344209 CN 201120344209 CN 201120344209 U CN201120344209 U CN 201120344209U CN 202220839 U CN202220839 U CN 202220839U
Authority
CN
China
Prior art keywords
gear
worm gear
axle shaft
cover
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN 201120344209
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Chinese (zh)
Inventor
方卫山
牛宪伟
杨俊敏
杨云福
韩跃东
李之平
朱毅
蒋立
杨卫民
杨永发
周新民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YUNNAN YUNHAI MACHINERY MANUFACTURING Co Ltd
YUNNAN AGRICULTURAL MACHINERY INSTITUTE
Southwest Forestry University
Original Assignee
YUNNAN YUNHAI MACHINERY MANUFACTURING Co Ltd
YUNNAN AGRICULTURAL MACHINERY INSTITUTE
Southwest Forestry University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by YUNNAN YUNHAI MACHINERY MANUFACTURING Co Ltd, YUNNAN AGRICULTURAL MACHINERY INSTITUTE, Southwest Forestry University filed Critical YUNNAN YUNHAI MACHINERY MANUFACTURING Co Ltd
Priority to CN 201120344209 priority Critical patent/CN202220839U/en
Application granted granted Critical
Publication of CN202220839U publication Critical patent/CN202220839U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

A self-locking differential relates to agricultural equipment and used for assisting small-sized agricultural equipment in steering. The self-locking differential is mounted in a gearbox and connected with an engine, a left half driving axle and a right half driving axle, and is characterized by comprising a worm, a worm gear, a planetary gear carrier 3, two planetary bevel gears, a cross-shaped gear carrier and a self-locking steering device. The worm gear is vertically mounted in the gearbox and meshed with the worm, the planetary gear carrier 3 and the cross-shaped gear carrier are respectively mounted on the inner periphery of the worm gear, the left half driving axle and the right half driving axle are sleeved to two ends of the cross-shaped gear carrier respectively, the planetary bevel gears include an upper planetary bevel gear and a lower planetary bevel gear which are horizontally mounted in the planetary gear carrier 3, the tail of each of the left half driving axle and the right half driving axle is provided with tapered teeth, and the planetary bevel gears are meshed with the left half driving axle and the right half driving axle through the tapered teeth. The self-locking differential is reasonable in design, compact in structure and suitable for various types of small-sized agricultural equipment.

Description

A kind of differential mechanism with self-locking
Technical field
The utility model relates to agricultural equipment, especially a kind of differential mechanism that is used for the band auto-lock function that auxiliary small-sized agricultural equipment turns to.
Background technique
At present, small-sized hand steered agricultural equipment is able to extensive popularization with its small volume and less weight, characteristics such as simple and compact for structure in areas such as mountain area, hills.
The turning operation method of small-sized agricultural equipment generally adopts hand to pinch the mode that handle is controlled, and controls the left and right jaw clutch on the steering shaft in the gearbox respectively through left and right handle, breaks off driving wheel power to reach the purpose that turns to.Though the steering mode of this principle helps facility turning in the farming of field, use left and right two handles to operate respectively and inconvenience, on spatial arrangement, be difficult to dwindle simultaneously the volume of gearbox; Secondly, central gearwheel transmission is adopted in existing rotatingshaft transmission basically, for obtaining lower working speed, needs to adopt the multi-stage gear transmission just can be effective, and has increased the volume of gearbox equally, is unfavorable for dwindling the volume of small-sized agricultural equipment.
Summary of the invention
The utility model is to be solved to be exactly existing small-sized agricultural equipment the steering gear operation inconvenience, and the big problem of gearbox volume, and a kind of auto-lock function that has is provided, and uses worm screw and worm drive, the differential mechanism that volume is little.
A kind of differential mechanism of the utility model with self-locking; Be installed in the gearbox and and be connected with motor, driving left half axle and driving right axle shaft; It is characterized in that described differential mechanism comprises worm screw, worm gear, planetary carrier, bevel planet gear, cross gear frame and irreversible steering gear; Worm gear vertically is installed in the gearbox, and and worm meshing; Planetary carrier and cross gear frame are installed in respectively in the inner ring of worm gear; Drive left half axle and drive right axle shaft and be enclosed within cross gear frame two ends respectively; Bevel planet gear is divided into upper and lower two, and level is installed in the planetary carrier respectively, drives left half axle and drive the right axle shaft afterbody to be provided with conical tooth, and bevel planet gear and driving left half axle, driving right axle shaft are through the conical tooth engagement; Irreversible steering gear is installed in to drive on the right axle shaft and with worm gear and links.
Power transmission drives worm gear through worm screw and rotates to worm screw, drives right axle shaft by worm gear through the irreversible steering gear drive again and rotates, and drives right axle shaft and drives the interlock of driving left half axle via bevel planet gear.
Described irreversible steering gear comprises the worm gear side cover, turns to clutch cover, turns to shift fork spare and turns to elastic component, and the worm gear side cover is that hollow ring is fixed on the worm gear right flank, and worm gear side cover inwall is provided with spline tooth; Turning to clutch cover is the open circles annulated column, and its external diameter is not more than worm gear side cover internal diameter, and internal diameter is not less than and drives the right axle shaft diameter, is enclosed within to drive on the right axle shaft, and slides along driving right axle shaft; Turn to clutch cover one end outer wall to be provided with spline tooth, the spline tooth engagement of this spline tooth and worm gear side cover inwall, the worm gear side cover turns to clutch cover to rotate through the spline tooth drive of engagement; Turn to the outer wall in clutch cover stage casing to be provided with fork slot, turn to shift fork spare to be embedded in the fork slot; Turn to the clutch cover inwall and drive the right axle shaft outer wall to be provided with intermeshing spline tooth, turn to clutch cover to pass through spline and drive the rotation of driving right axle shaft; Turn to elastic component to be fixed on the gearbox inwall, and be connected with turning to clutch cover.
The described elastic component that turns to is for turning to spring.
Turn to clutch cover on the driving right axle shaft, to horizontally slip; Under the effect that turns to elastic component; Turn to clutch cover to slide into left to drive the right axle shaft left end and with the spline tooth engagement of worm gear side cover inwall; Turn to this moment clutch cover to get into self-locking state, only with the planetary carrier motion, self does not rotate bevel planet gear; The worm gear side cover of following the worm gear rotation drives through spline tooth and turns to clutch cover to rotate, and turns to clutch cover through rotating with driving the spline tooth drive driving right axle shaft that meshes on the right axle shaft outer wall simultaneously, drives left half axle and under the cooperation of bevel planet gear, realizes interlock.In the time of need turning to, stir and turn to shift fork spare, make to turn to clutch cover to slide to the right; Break away from the worm gear side cover, impel differential mechanism to begin effect, bevel planet gear was followed turbine and was rotated together under the effect of planetary carrier this moment; And make left half axle and the running of right axle shaft differential, realize turning to.
A kind of differential mechanism of the utility model with self-locking, reasonable in design, compact structure; Use the collocation of a few gear train can realize giving of jack shaft power and or cut off, easy to operate, can effectively reduce the volume of gearbox; Be suitable on the various small-sized agricultural equipments; Spatial arrangement is freer, and under the help of bevel planet gear, it is lighter, convenient to make agricultural machinery turn to simultaneously.
Description of drawings
Fig. 1 is the utility model cross-sectional view.
Fig. 2 is the utility model worm gear generalized section.
Fig. 3 is the utility model worm gear side cover schematic representation.
Fig. 4 turns to the clutch cover structural representation for the utility model.
Wherein, worm screw 1, worm gear 2, planetary carrier 3, bevel planet gear 4, cross gear frame 5 drives left half axle 6, drives right axle shaft 7, and worm gear side cover 8 turns to clutch cover 9, turns to shift fork spare 10, turns to spring 11, fork slot 12.
Embodiment
Embodiment 1: a kind of differential mechanism with self-locking; Be installed in to drive left half axle 6 in the gearbox and drive right axle shaft 7 and connect; This differential mechanism comprises worm screw 1, worm gear 2, planetary carrier 3, bevel planet gear 4, cross gear frame 5 and irreversible steering gear; Worm gear 2 vertically is installed in the gearbox, and meshes with worm screw 1; Planetary carrier 3 is installed in respectively in the inner ring of worm gear 2 with cross gear frame 5, drives left half axle 6 and drive right axle shaft 7 to be enclosed within cross gear frame 5 two ends respectively; Bevel planet gear 4 is divided into upper and lower two, and level is installed in the planetary carrier 3 respectively, drives left half axle 6 and drive right axle shaft 7 afterbodys to be provided with conical tooth, and bevel planet gear 4 and driving left half axle 6, driving right axle shaft 7 are through the conical tooth engagement.
Irreversible steering gear is installed in to drive on the right axle shaft 7 and with worm gear 2 and links, and comprises worm gear side cover 8, turns to clutch cover 9, turns to shift fork spare 10 and turns to spring 11; Worm gear side cover 8 is fixed on worm gear 2 right flanks for hollow ring, and worm gear side cover 8 inwalls are provided with spline tooth; Turn to clutch cover 9 to be the open circles annulated column, its external diameter is slightly less than the internal diameter of worm gear side cover 8, and internal diameter is slightly larger than the diameter that drives right axle shaft 7, drives on the right axle shaft 7 conveniently to be enclosed within, and slides along driving right axle shaft 7; Turn to clutch cover 9 one end outer walls to be provided with spline tooth, the spline tooth engagement of this spline tooth and worm gear side cover 8 inwalls, worm gear side cover 8 turns to clutch cover 9 to rotate through the spline tooth drive of engagement; Turn to the outer wall in clutch cover 9 stage casings to be provided with fork slot 12, turn to shift fork spare 10 to be embedded in the fork slot 12; Turn to clutch cover 9 inwalls and drive right axle shaft 7 outer walls to be provided with intermeshing spline tooth, turn to clutch cover 9 to drive and drive right axle shaft 7 rotations through spline; Turn to spring 11 to be fixed on the gearbox inwall, and be connected with turning to clutch cover 9.
Transmission of power to worm screw 1, and by 2 rotations of worm screw 1 drive worm gear, drive through irreversible steering gear by worm gear 2 again and drive right axle shaft 7 rotations, driving right axle shaft 7 drives via bevel planet gear 4 and drives left half axles 6 interlocks.Turn to clutch cover 9 on driving right axle shaft 7, to horizontally slip; Under the effect that turns to spring 11; Turn to clutch cover 9 to slide into left to drive right axle shaft 7 left ends and with the spline tooth engagement of worm gear side cover 8 inwalls; Turn to this moment clutch cover 9 to get into self-locking state, only with planetary carrier 3 motions, self does not rotate bevel planet gear 4; The worm gear side cover 8 of following worm gear 2 rotations drives through spline tooth and turns to clutch cover 9 to rotate; Turn to clutch cover 9 through driving 7 rotations of driving right axle shaft simultaneously, drive left half axle 6 and under the cooperation of bevel planet gear 4, realize interlock with driving the spline tooth that meshes on right axle shaft 7 outer walls.In the time of need turning to, stir and turn to shift fork spare 10, make to turn to clutch cover 9 to slide to the right; Break away from worm gear side cover 8, impel differential mechanism to begin effect, bevel planet gear 4 was followed turbine and was rotated together under the effect of planetary carrier 3 this moment; And make left half axle and the running of right axle shaft differential, realize turning to.

Claims (3)

1. differential mechanism with self-locking; Be installed in the gearbox and and be connected with motor, driving left half axle (6) and driving right axle shaft; It is characterized in that described differential mechanism comprises worm screw (1), worm gear (2), planetary carrier (3), bevel planet gear (4), cross gear frame (5) and irreversible steering gear; Worm gear (2) vertically is installed in the gearbox, and meshes with worm screw (1); Planetary carrier (3) is installed in respectively in the inner ring of worm gear (2) with cross gear frame (5); Drive left half axle (6) and drive right axle shaft and be enclosed within cross gear frame (5) two ends respectively; Bevel planet gear (4) is divided into upper and lower two; Level is installed in the planetary carrier (3) respectively; Driving left half axle (6) and driving right axle shaft afterbody are provided with conical tooth, and bevel planet gear (4) passes through conical tooth with driving left half axle (6), driving right axle shaft and meshes; Irreversible steering gear is installed in to drive on the right axle shaft and with worm gear (2) and links.
2. a kind of differential mechanism as claimed in claim 1 with self-locking; It is characterized in that described irreversible steering gear comprises worm gear side cover (8), turns to clutch cover (9), turns to shift fork spare (10) and turns to elastic component; Worm gear side cover (8) is fixed on worm gear (2) right flank for hollow ring, and worm gear side cover (8) inwall is provided with spline tooth; Turning to clutch cover (9) is the open circles annulated column, and its external diameter is not more than worm gear side cover (8) internal diameter, and internal diameter is not less than and drives the right axle shaft diameter, is enclosed within to drive on the right axle shaft, and slides along driving right axle shaft; Turn to clutch cover (9) one end outer walls to be provided with spline tooth, the spline tooth engagement of this spline tooth and worm gear side cover (8) inwall, worm gear side cover (8) turns to clutch cover (9) to rotate through the spline tooth drive of engagement; Turn to the outer wall in clutch cover (9) stage casing to be provided with fork slot (12), turn to shift fork spare (10) to be embedded in the fork slot (12); Turn to clutch cover (9) inwall and drive the right axle shaft outer wall to be provided with intermeshing spline tooth, turn to clutch cover (9) to drive and drive the right axle shaft rotation through spline; Turn to elastic component to be fixed on the gearbox inwall, and be connected with turning to clutch cover (9).
3. a kind of differential mechanism with self-locking as claimed in claim 2 is characterized in that the described elastic component that turns to is for turning to spring (11).
CN 201120344209 2011-09-15 2011-09-15 Self-locking differential Expired - Lifetime CN202220839U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120344209 CN202220839U (en) 2011-09-15 2011-09-15 Self-locking differential

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120344209 CN202220839U (en) 2011-09-15 2011-09-15 Self-locking differential

Publications (1)

Publication Number Publication Date
CN202220839U true CN202220839U (en) 2012-05-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120344209 Expired - Lifetime CN202220839U (en) 2011-09-15 2011-09-15 Self-locking differential

Country Status (1)

Country Link
CN (1) CN202220839U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277483A (en) * 2013-06-05 2013-09-04 何连江 Four-wheel-drive lockless antiskid differential mechanism
CN104500686A (en) * 2014-12-26 2015-04-08 温岭市华鑫机械制造有限公司 Electronic differential rear axle of all-terrain vehicle
CN104500685A (en) * 2014-11-11 2015-04-08 山东汇金股份有限公司 High-strength low-noise differential assembly and material
CN106080772A (en) * 2016-06-24 2016-11-09 湖南农业大学 Self-lock differential formula crawler belt driving and steering system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103277483A (en) * 2013-06-05 2013-09-04 何连江 Four-wheel-drive lockless antiskid differential mechanism
CN104500685A (en) * 2014-11-11 2015-04-08 山东汇金股份有限公司 High-strength low-noise differential assembly and material
CN104500686A (en) * 2014-12-26 2015-04-08 温岭市华鑫机械制造有限公司 Electronic differential rear axle of all-terrain vehicle
CN106080772A (en) * 2016-06-24 2016-11-09 湖南农业大学 Self-lock differential formula crawler belt driving and steering system

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C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20120516

CX01 Expiry of patent term