CN2820599Y - Synchronous variable gear rear axle for motor vehicle with reverse gear - Google Patents

Synchronous variable gear rear axle for motor vehicle with reverse gear Download PDF

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Publication number
CN2820599Y
CN2820599Y CN 200520009465 CN200520009465U CN2820599Y CN 2820599 Y CN2820599 Y CN 2820599Y CN 200520009465 CN200520009465 CN 200520009465 CN 200520009465 U CN200520009465 U CN 200520009465U CN 2820599 Y CN2820599 Y CN 2820599Y
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shift
tooth
shaft
reverse
grade
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CN 200520009465
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Chinese (zh)
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吴先友
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Abstract

But a kind of self-propelled vehicle synchronous mode shift back axle with reverse gear, corner tooth shaft (4) and castellated shaft (7) are arranged in the casing, low-grade driving tooth (8), high-grade driving tooth (9) and reverse mesh tooth (10) are arranged on the castellated shaft (7), low-grade driven tooth (11), high-grade driven tooth (12) and reverse gear output gear (13) are arranged on the corner tooth shaft (4), between low-grade driven tooth (11) and high-grade driven tooth (12) synchronizing clutch (14) is arranged, between reverse mesh tooth (10) and reverse gear output gear (13) gap bridge tooth (20) is arranged; Shift declutch shift shaft (16) and reverse speed shift rod (18) one sides all have the declutch shift shaft controller, between shift declutch shift shaft (16) and reverse speed shift rod (18) joint control bar (19) are arranged.The utility model and engine mission are used, but enlarger motor-car shift torque conversion range improves self-propelled vehicle optimum speed and hill climbing ability, and the shift synchronism is good, and tool reverse gear function, reliable operation, long service life.

Description

But the self-propelled vehicle synchronous mode shift back axle of band reverse gear
Technical field
The utility model relates to a kind of vehicle rear bridge, but especially with the self-propelled vehicle synchronous mode shift back axle of reverse gear.
Background technology
At present, the back axle of self-propelled vehiclees such as automobile or three, four-wheel motor cycle mainly is made up of rear-axle casing, main deceleration shell, differential shell, corner tooth shaft, main reduction gear, diff and semiaxis etc., transmission shaft is delivered to the output torque of driving engine on the corner tooth shaft, is delivered to left and right half and the drive wheels rotation through main reduction gear, diff.Driving engine generally all is provided with a plurality of gears, can carry out gear shift according to the various road conditions and the needs that travel, to change the output speed and the moment of torsion of driving engine.In the design of self-propelled vehicle is produced, the keystone configuration of driving engine is not generally changed easily, development along with traffic network, the road conditions that self-propelled vehicle faces also are diversified direction and develop, and particularly on rural highway or rugged mountain path, the shift scope of some driving engine can not satisfy the needs that travel, on the extraordinary road of road conditions, want to raise speed and but do not carry, meet the phenomenon that under power then appears in steeper sloping road, the travel scope of self-propelled vehicle is affected.For this reason, once there was the people on back axle, to remove original arched plate tooth-angle tooth drive mechanism, and change into two pairs of engagement straight gears are set at the two ends of diff, wherein two straight gears are fixed on the differential shell, in addition two straight-tooth byes are enclosed within on the input shaft, and between the empty cover of two on the input shaft straight gear shift shifting fork mechanism are set and realize shift.The change speed gear box that the raised path between farm fields shift back axle binding engine of existing this structure carries can enlarge the shift scope of car load, improves best moving velocity of car load and hill climbing ability.But owing to be the straight-tooth engagement, monodentate is stressed, and its shift shifting fork mechanism can not be realized synchromesh, therefore its converter speed ratio is little, and intensity is low, quick combination of moment between shift process middle gear, be easy to break tooth, thereby the potential safety hazard of bringing has also influenced service life of back axle.
The utility model content
But problem to be solved in the utility model provides a kind of enlarger motor-car shift scope, can realize synchromesh during shift, but and self-propelled vehicle synchronous mode shift back axle with band reverse gear of gear reversing function.
For addressing the above problem, but the self-propelled vehicle synchronous mode shift back axle of band reverse gear described in the utility model comprises rear-axle casing, main deceleration shell, differential shell, corner tooth shaft, left and right sides semiaxis and diff, main deceleration shell is installed on the rear-axle casing, be fixed with the basin tooth on the differential shell, the angle increment engagement of basin tooth and corner tooth shaft, the other end of corner tooth shaft stretches out main deceleration shell, on the main deceleration shell casing is installed, be provided with castellated shaft in the casing, corner tooth shaft and castellated shaft all by bearings on casing; Be installed with low-grade driving tooth, high-grade driving tooth and reverse mesh tooth on the castellated shaft, kink has low-grade driven tooth, high-grade driven tooth and key to be with the reverse gear output gear on the corner tooth shaft, be provided with synchronizing clutch between low-grade driven tooth and the high-grade driven tooth, be engaged with the gap bridge tooth between reverse mesh tooth and the reverse gear output gear; The overcoat of synchronizing clutch links by shift shift fork and shift declutch shift shaft, one side of reverse gear output gear is provided with reverse speed fork, reverse speed fork and reverse speed shift rod link, one side of shift declutch shift shaft and reverse speed shift rod is equipped with the declutch shift shaft controller, is provided with the joint control bar between shift declutch shift shaft and the reverse speed shift rod.
Described declutch shift shaft controller constitutes by regulating bolt, compression spring and bulb straight pin, regulating bolt thread is connected on the casing, regulate the chamber that bolt has an end opening, compression spring is arranged in chamber, be provided with three sphere connected in stars that the bulb end with the bulb straight pin matches on shift declutch shift shaft and the reverse speed shift rod respectively, the other end of bulb straight pin is arranged in compression spring.
Described joint control bar is vertically set between shift declutch shift shaft and the reverse speed shift rod, and matches for the convex-concave cambered surface between the position-limited trough on its two ends and shift declutch shift shaft and the reverse speed shift rod.
The utility model is provided with a castellated shaft as power input shaft in a side of corner tooth shaft, two pairs of driving and driven gears are set between castellated shaft and corner tooth shaft, do not change the engaging structure of arched plate tooth and corner tooth shaft angle increment on the differential housing, thereby can guarantee the quality of fit that bigger speed change is when high, and intensity height.Between two driven gears of corner tooth shaft, synchronizing clutch is set, made full use of the constructional feature of synchronizing clutch, under the control of engine clucht is coordinated, during shift, by the external tooth cover on the synchronizing clutch with after the baulk ring of idle running is meshed, again by the male cone (strobilus masculinus) that matches between baulk ring inner conical surface and low-grade driven gear or the high-grade driven gear by pine to combining gradually tightly, realize both sides' synchronization by the friction force between two conical surfaces, again by bilateral guiding tooth engagement.Owing to realized synchromesh, eliminated and meshed bilateral differential, thereby the powerful impulsive force of avoiding moment to be connected to form firmly broken tooth.One group of reverse gearwheel also is set between castellated shaft and corner tooth shaft, thereby makes back axle also have the reverse gear function.Shift declutch shift shaft and reverse speed shift rod make them all can reliably locate at each gear, thereby can avoid the generation of trip stop, phenomenon out of supply by the effect of declutch shift shaft controller separately.Control action by the joint control bar, have only when shift declutch shift shaft during at Neutral Position, reverse speed shift rod could move and realize reverse gear, and reverse speed shift rod is when being in reverse gear position, the akinesia under the effect of joint control bar of shift declutch shift shaft, the gear-change operation harmonious orderly is carried out, avoid the destruction that causes because of random shelves gear.
The beneficial effects of the utility model are: the change speed gear box that carries with driving engine is used, but the shift torque conversion range of enlarger motor-car, improve the best moving velocity and the hill climbing ability of self-propelled vehicle, the synchronism of shift is good, and has a joint control reverse gear function, compact conformation, reliable operation, long service life are implemented in the operation that can ensure safety.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the principle of work scheme drawing between shift declutch shift shaft 16 in the utility model, reverse speed shift rod 18 and the joint control bar 19.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
As Fig. 1, shown in Figure 2, but the self-propelled vehicle synchronous mode shift back axle of band reverse gear described in the utility model is by rear-axle casing 1, main deceleration shell 2, differential shell 3, corner tooth shaft 4, basin tooth 5, casing 6, castellated shaft 7, low-grade driving tooth 8, high-grade driving tooth 9, reverse mesh tooth 10, low-grade driven tooth 11, high-grade driven tooth 12, reverse gear output gear 13, synchronizing clutch 14, shift shift fork 15, shift declutch shift shaft 16, reverse speed fork 17, reverse speed shift rod 18, joint control bar 19, gap bridge tooth 20, regulate bolt 21, compression spring 22, bulb straight pin 23, sphere connected in star 24, gap bridge axle 25, position-limited trough 26, terminal pad 27, baulk ring 28, compositions such as left and right sides semiaxis 29 and diff 30.Main deceleration shell 2 usefulness bolts are installed on the rear-axle casing 1, basin tooth 5 is fixed on the differential shell 3, basin tooth 5 meshes the main deceleration part that constitutes back axle with the angle increment of corner tooth shaft 4, the other end of corner tooth shaft 4 stretches out main deceleration shell 2, casing 6 is installed on the main deceleration shell 2 by bolt, casing is provided with castellated shaft 7 for 6 li, corner tooth shaft 4 and castellated shaft 7 all by bearings on casing 6.Low-grade driving tooth 8, high-grade driving tooth 9 and reverse mesh tooth 10 are solidly set on the castellated shaft 7, low-grade driven tooth 11, high-grade driven tooth 12 kinks are on corner tooth shaft 4, reverse gear output gear 13 key covers (can endwisely slip) are on corner tooth shaft 4, synchronizing clutch 14 is between low-grade driven tooth 11 and high-grade driven tooth 12, be engaged with gap bridge tooth 20 between reverse mesh tooth 10 and the reverse gear output gear 13, gap bridge tooth 20 skies are enclosed within on the axle 25 of passing a bridge.The overcoat 14a of synchronizing clutch 14 links by shift shift fork 15 and shift declutch shift shaft 16, one side of reverse gear output gear 13 is provided with reverse speed fork 17, reverse speed fork 17 is fixed on the reverse speed shift rod 18, one side of shift declutch shift shaft 16 and reverse speed shift rod 18 is equipped with the declutch shift shaft controller, is provided with joint control bar 19 between shift declutch shift shaft 16 and the reverse speed shift rod 18.Baulk ring 28 is housed on the synchronizing clutch 12, the toothholder 14b of synchronizing clutch 14 is enclosed within on the castellated shaft 7, toothholder 14b and overcoat 14a are connected together, and baulk ring 28 is enclosed within on the toothholder 14b, the inside and outside conical suface for matching between baulk ring 28 and low-grade driven tooth 11 and the high-grade driven tooth 12.
As can be seen from Figure 1: above-mentionedly constitute by regulating bolt 21, compression spring 22 and bulb straight pin 23, regulating bolt 21 is threaded on the casing 6, regulate the chamber 21a that bolt 21 has an end opening, compression spring 22 is arranged in chamber 21a, be provided with three sphere connected in stars 24 that the bulb end with bulb straight pin 23 matches on shift declutch shift shaft 16 and the reverse speed shift rod 18 respectively, the other end of bulb straight pin 23 is arranged in compression spring 22.The height of sphere connected in star 24 is less than the radius of bulb straight pin 23 bulb ends.When promotion shift declutch shift shaft 16 makes that sphere connected in star 24 placed in the middle cooperate with the bulb end of bulb straight pin 23, shift shift fork 15 is in Neutral Position, when that sphere connected in star 24 of top cooperates with the bulb end of bulb straight pin 23, shift shift fork 15 is in high-grade position, when that sphere connected in star 24 of below cooperated with the bulb end of bulb straight pin 23,13 of shift shift forks were in low gear position.Under the effect of compression spring 22, bulb straight pin 23 can carry out axial limiting to shift declutch shift shaft 16 or reverse speed shift rod 18, prevents that them from arbitrarily moving axially and cause trip stop.Also can adjust by the bulb end of 21 pairs of bulb straight pins 17 of regulation cock and the application force between shift declutch shift shaft 16 or the reverse speed shift rod 18.
Fig. 1 illustrates casing 6 and is made up of main box 6a, case lid 6b and shift fork lid 6c, and case lid 6b is by being bolted on the main box 6a, and shift fork lid 6c is by being bolted between main box 6a and the case lid 6b; The gap bridge axle 25 of described gap bridge tooth 20 is supported on the case lid 6b.Casing 6 is divided into this three part, is convenient to inner each several part dismounting and maintenance.
Fig. 2 is the principle of work scheme drawing between shift declutch shift shaft 16 in the utility model, reverse speed shift rod 18 and the joint control bar 19, joint control bar 19 is vertically set between shift declutch shift shaft 16 and the reverse speed shift rod 18, and matches for the convex-concave cambered surface between the position-limited trough 26 of its two ends and shift declutch shift shaft 16 and reverse speed shift rod 18.The two ends of Fig. 2-1 expression joint control bar 19 all position-limited trough 26 and the part on shift declutch shift shaft 16 and the reverse speed shift rod 18 enter in the groove, at this moment shift declutch shift shaft 16 and reverse speed shift rod 18 all are in Neutral Position, and shift declutch shift shaft 16 and reverse speed shift rod 18 all can move axially under the gearshift effect; Fig. 2-2 expression shift declutch shift shaft 16 moves axially to low gear position, at this moment an end of joint control bar 19 withdraws from from the position-limited trough 26 on the shift declutch shift shaft 16, the other end that the side force of its generation promotes joint control bar 19 enters in the position-limited trough 26 on the reverse speed shift rod 18 fully, reverse speed shift rod 18 reverse speed shift rod 18 carried out axial limiting completely, even can not move axially under the effect of gearshift externally applied forces; Fig. 2-3 expression reverse speed shift rod 18 is in reverse gear position, shift declutch shift shaft 16 is in Neutral Position, at this moment an end of joint control bar 19 withdraws from from the position-limited trough 26 on the reverse speed shift rod 18, the other end that the side force of its generation promotes joint control bar 19 enters in the position-limited trough 26 on the shift declutch shift shaft 16 fully, shift declutch shift shaft 16 shift declutch shift shaft 16 carried out axial limiting completely, even can not move axially under the externally applied forces effect of gear-change operation mechanism.
The power intake that Fig. 1, Fig. 2 also illustrate castellated shaft 7 is equipped with terminal pad 27, is used for connecting transmission shaft, makes the moment of torsion transmission more reliable between transmission shaft and the castellated shaft 7.
Principle of work: when synchronizing clutch 14 is in midway location between low-grade driven tooth 11 and the high-grade driven tooth 12, synchronizing clutch 14 does not act on low-grade driven tooth 11 and 12 oxen of high-grade driven tooth, two groups of main driven gear vice division chiefs are in free bonding state, and this back axle is transferring power not.During motor-driven vehicle going, synchronizing clutch 14 will combine transfer torque with low-grade driven tooth 11 or high-grade driven tooth 12.When self-propelled vehicle thinks further to improve moving velocity under steam, driving engine has reached top-gear if back axle is in low gear position, raised path between farm fields is stirred shift declutch shift shaft 16, making shift shift fork 15 drive synchronizing clutch 14 combines with high-grade driven tooth 12, moment of torsion on the castellated shaft 7 is delivered on the corner tooth shaft 4 by high-grade driving tooth 9, high-grade driven tooth 12 and synchronizing clutch 14, realizes speedup.Certainly, driving engine also can be crossed in other grade and allow back axle switch to top grade from low grade to realize speedup.In like manner, when the self-propelled vehicle climbing, or travel in the field and when under power occurring, driving engine has been in low gear (a grade) if back axle is in high-grade position, can stir shift declutch shift shaft 16, make shift shift fork 15 drive synchronizing clutch 14 to low-grade driven tooth 11 1 side shiftings, the inner conical surface of baulk ring 14c is combined with the male cone (strobilus masculinus) of low-grade driven tooth 11, moment of torsion on the castellated shaft 7 is delivered on the corner tooth shaft 4 by low-grade driving tooth 8, low-grade driven tooth 11 and synchronizing clutch 14, realize slowing down, but power strengthens.Certainly, driving engine also can be realized slowing down and carries square in other grade by allowing back axle switch to low grade from top grade.
When needs are poured into, make shift declutch shift shaft 16 enter Neutral Position, and stir reverse speed shift rod 18, reverse speed fork 17 is combined with reverse mesh tooth 10, moment of torsion on the castellated shaft 7 to corner tooth shaft 4, is realized reverse gear by reverse speed fork 17, reverse mesh tooth 10, gap bridge tooth 20 and reverse gear output gear 13 back transfer.During the back axle shift, answer the control coordinated manipulation of binding engine power-transfer clutch, promptly during the back axle shift, should disconnect engine clucht to cut off power.It is few or do not have vapour, diesel motor and the storage battery actuating unit of gear that the utility model is particularly useful for being equipped with gear, can improve best moving velocity, and enlarge the outputting power scope.

Claims (5)

1, but a kind of self-propelled vehicle synchronous mode shift back axle with reverse gear, comprise rear-axle casing (1), main deceleration shell (2), differential shell (3), corner tooth shaft (4), left and right sides semiaxis (29) and diff (30), main deceleration shell (2) is installed on the rear-axle casing (1), be fixed with basin tooth (5) on the differential shell (3), basin tooth (5) meshes with the angle increment of corner tooth shaft (4), the other end of corner tooth shaft (4) stretches out main deceleration shell (2), it is characterized in that: casing (6) is installed on the main deceleration shell (2), casing (6) lining is provided with castellated shaft (7), corner tooth shaft (4) and castellated shaft (7) all by bearings on casing (6); Be installed with low-grade driving tooth (8), high-grade driving tooth (9) and reverse mesh tooth (10) on the castellated shaft (7), corner tooth shaft (4) is gone up kink has low-grade driven tooth (11), high-grade driven tooth (12) and key to be with reverse gear output gear (13), be provided with synchronizing clutch (14) between low-grade driven tooth (11) and the high-grade driven tooth (12), be engaged with gap bridge tooth (20) between reverse mesh tooth (10) and the reverse gear output gear (13); The overcoat (14a) of synchronizing clutch (14) links by shift shift fork (15) and shift declutch shift shaft (16), one side of reverse gear output gear (13) is provided with reverse speed fork (17), reverse speed fork (17) links with reverse speed shift rod (18), one side of shift declutch shift shaft (16) and reverse speed shift rod (18) is equipped with the declutch shift shaft controller, is provided with joint control bar (19) between shift declutch shift shaft (16) and the reverse speed shift rod (18).
2, but the self-propelled vehicle synchronous mode shift back axle of band reverse gear according to claim 1, it is characterized in that: described declutch shift shaft controller is by regulating bolt (21), compression spring (22) and bulb straight pin (23) constitute, regulating bolt (21) is threaded on the casing (6), regulate the chamber (21a) that bolt (21) has an end opening, compression spring (22) is arranged in chamber (21a), be provided with three sphere connected in stars (24) that the bulb end with bulb straight pin (23) matches on shift declutch shift shaft (16) and the reverse speed shift rod (18) respectively, the other end of bulb straight pin (23) is arranged in compression spring (22).
But 3, the self-propelled vehicle synchronous mode shift back axle of band reverse gear according to claim 1, it is characterized in that: described casing (6) is made up of main box (6a), case lid (6b) and shift fork lid (6c), case lid (6b) is by being bolted on the main box (6a), and shift fork lid (6c) is by being bolted between main box (6a) and the case lid (6b); The gap bridge axle (25) of described gap bridge tooth (20) is supported on the case lid (6b).
But 4, the self-propelled vehicle synchronous mode shift back axle of band reverse gear according to claim 1, it is characterized in that: described joint control bar (19) is vertically set between shift declutch shift shaft (16) and the reverse speed shift rod (18), and matches for the convex-concave cambered surface between the position-limited trough (26) on its two ends and shift declutch shift shaft (16) and the reverse speed shift rod (18).
But 5, the self-propelled vehicle synchronous mode shift back axle of band reverse gear according to claim 1, it is characterized in that: the power intake of described castellated shaft (7) is equipped with terminal pad (27).
CN 200520009465 2005-06-13 2005-06-13 Synchronous variable gear rear axle for motor vehicle with reverse gear Expired - Lifetime CN2820599Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200520009465 CN2820599Y (en) 2005-06-13 2005-06-13 Synchronous variable gear rear axle for motor vehicle with reverse gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200520009465 CN2820599Y (en) 2005-06-13 2005-06-13 Synchronous variable gear rear axle for motor vehicle with reverse gear

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CN2820599Y true CN2820599Y (en) 2006-09-27

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Application Number Title Priority Date Filing Date
CN 200520009465 Expired - Lifetime CN2820599Y (en) 2005-06-13 2005-06-13 Synchronous variable gear rear axle for motor vehicle with reverse gear

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015612A (en) * 2014-06-13 2014-09-03 广西澜光科技有限公司 Power reduction gearbox of tractor implement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015612A (en) * 2014-06-13 2014-09-03 广西澜光科技有限公司 Power reduction gearbox of tractor implement

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CX01 Expiry of patent term

Expiration termination date: 20150613

Granted publication date: 20060927