阅读说明：本技术 一种新型多挡变速器互锁机构 (Novel interlocking mechanism of multi-gear transmission ) 是由 李磊 黄伟 杨海华 王康林 祖厚友 于 2020-12-16 设计创作，主要内容包括：本发明提供了一种新型多挡变速器互锁机构,其既保证单挡工作工况,又允许两个挡同时工作工况,同时制止了三个挡同时在挡的情况,防止变速箱锁死,打坏变速箱。其包括三根布置于同一平面的换挡拨叉轴,具体为第一拨叉轴、第二拨叉轴、第三拨叉轴,第一拨叉轴为半挡拨叉轴、其仅可向一个方向切换进挡,第一拨叉轴上固设有第一换挡齿条、第一换挡拨叉,第二拨叉轴上固设有第二换挡齿条、第二换挡拨叉,第三拨叉轴上固设有第三换挡齿条、第三换挡拨叉,第一拨叉轴、第二拨叉轴、第三拨叉轴平行布置,第一换挡齿条啮合连接第一换挡齿轮布置,第二换挡齿条啮合连接第二换挡齿轮布置,第三换挡齿条啮合连接第三换挡齿轮布置。(The invention provides a novel interlocking mechanism of a multi-gear transmission, which not only ensures the working condition of a single gear, but also allows the working condition of two gears to work simultaneously, and simultaneously prevents the condition that three gears are in gear simultaneously, thereby preventing the gear box from being locked and damaging the gear box. The gear shifting device comprises three gear shifting fork shafts arranged on the same plane, and specifically comprises a first fork shaft, a second fork shaft and a third fork shaft, wherein the first fork shaft is a half-gear fork shaft and can only shift gears in one direction, a first gear shifting rack and a first gear shifting fork are fixedly arranged on the first fork shaft, a second gear shifting rack and a second gear shifting fork are fixedly arranged on the second fork shaft, a third gear shifting rack and a third gear shifting fork are fixedly arranged on the third fork shaft, the first fork shaft, the second fork shaft and the third fork shaft are arranged in parallel, the first gear shifting rack is meshed with the first gear shifting gear arrangement, the second gear shifting rack is meshed with the second gear shifting gear arrangement, and the third gear shifting rack is meshed with the third gear shifting gear arrangement.)

1. The utility model provides a novel multi-gear derailleur interlocking mechanism which characterized in that: the gear shifting device comprises three gear shifting fork shafts arranged on the same plane, in particular to a first fork shaft, a second fork shaft and a third fork shaft, wherein the first fork shaft is a half-gear fork shaft which can only shift gears in one direction, a first gear shifting rack and a first gear shifting fork are fixedly arranged on the first fork shaft, a second gear shifting rack and a second gear shifting fork are fixedly arranged on the second fork shaft, a third gear shifting rack and a third gear shifting fork are fixedly arranged on the third fork shaft, the first fork shaft, the second fork shaft and the third fork shaft are arranged in parallel, the first gear shifting rack is meshed and connected with a first gear shifting gear arrangement, the second gear shifting rack is meshed and connected with a second gear shifting gear arrangement, the third gear shifting rack is meshed and connected with a third gear shifting gear arrangement, an interlocking shaft is arranged in an area between the first fork shaft and the second fork shaft, and an interlocking rack is fixedly sleeved on the position of the interlocking shaft corresponding to the first gear shifting gear, the interlocking rack is meshed with the first gear shifting gear, the interlocking shaft is arranged in parallel to the first shifting fork shaft, a part of space direction overlapping area is preset on the second shifting fork shaft and the third shifting fork shaft, an interlocking guide hole is formed in the interlocking shaft corresponding to the overlapping area, an interlocking block is inserted into the interlocking guide hole, a fixed support frame is arranged in the space of the overlapping area, the support frame is provided with a first pin hole, a second pin hole and a guide sleeve, and the interlocking block of the interlocking shaft is arranged in the guide sleeve; in a neutral state, a first pin hole is formed in the position, facing the second declutch shift shaft, of the guide sleeve, and is communicated to a corresponding first interlocking groove of the second declutch shift shaft, a second pin hole is formed in the position, facing the third declutch shift shaft, of the guide sleeve, and is communicated to a corresponding second interlocking groove of the third declutch shift shaft; the interlocking device comprises a first pin hole, a second pin hole, an interlocking shaft, an interlocking block, a first interlocking pin, a second interlocking pin and an interlocking block, wherein the first interlocking pin is inserted in the first pin hole, the second interlocking pin is inserted in the second pin hole, a guide inner groove is formed in the position, corresponding to the whole section of a dynamic region of the interlocking shaft, exposed contact positions of the interlocking block, the first interlocking pin and the second interlocking pin are arc surfaces, guide arc surfaces are respectively arranged at two ends of the guide inner groove in the length direction, the first interlocking pin and the second interlocking pin are not protruded out of the outer ends of the corresponding pin holes in the initial position, the sum of the axial lengths of the first interlocking pin, the second interlocking pin and the interlocking block is larger than the corresponding width size of an overlapping region, the interlocking block is movably arranged along the interlocking guide holes, and the arc surfaces at the inner ends of the two interlocking pins are respectively arranged in.

2. The novel multi-speed transmission interlocking mechanism of claim 1, wherein: the gear shifting fork is characterized in that a gear block is integrated on the supporting frame, and the rear end face of a first gear shifting fork of the first fork shaft is arranged close to the front end face of the gear block.

3. The novel multi-speed transmission interlocking mechanism of claim 1, wherein: the gear block and the guide sleeve are integrally arranged, a large-diameter guide ring is arranged at the position, corresponding to the guide sleeve, of the interlocking shaft, and the large-diameter guide ring is arranged to be attached to the inner ring wall of the guide sleeve.

4. The novel multi-speed transmission interlocking mechanism of claim 1, wherein: the first shifting fork shaft and the third shifting fork shaft are coaxially arranged, and the third shifting fork shaft is arranged behind the first shifting fork shaft at intervals.

5. The novel multi-speed transmission interlocking mechanism of claim 1, wherein: the interlocking guide holes are arranged in the middle area of the length of the two guide inner grooves.

Technical Field

The invention relates to the technical field of transmission gear interlocking, in particular to a novel multi-gear transmission interlocking mechanism.

Background

The interlocking mechanism of the existing gearbox only allows one gear to be in gear, all gears except a working gear are locked, but the existing interlocking mechanism cannot be applied to the gearbox which needs a single-gear working condition and a double-gear working condition based on the working requirement of a double-input-shaft multi-gear transmission.

Disclosure of Invention

Aiming at the problems, the invention provides a novel interlocking mechanism of a multi-gear transmission, which not only ensures the working condition of single gear, but also allows the working condition of two gears to work simultaneously, and simultaneously prevents the condition that three gears are in gear simultaneously, thereby preventing the gear box from being locked and damaging the gear box.

The utility model provides a novel multi-gear derailleur interlocking mechanism which characterized in that: the gear shifting device comprises three gear shifting fork shafts arranged on the same plane, in particular to a first fork shaft, a second fork shaft and a third fork shaft, wherein the first fork shaft is a half-gear fork shaft which can only shift gears in one direction, a first gear shifting rack and a first gear shifting fork are fixedly arranged on the first fork shaft, a second gear shifting rack and a second gear shifting fork are fixedly arranged on the second fork shaft, a third gear shifting rack and a third gear shifting fork are fixedly arranged on the third fork shaft, the first fork shaft, the second fork shaft and the third fork shaft are arranged in parallel, the first gear shifting rack is meshed and connected with a first gear shifting gear arrangement, the second gear shifting rack is meshed and connected with a second gear shifting gear arrangement, the third gear shifting rack is meshed and connected with a third gear shifting gear arrangement, an interlocking shaft is arranged in an area between the first fork shaft and the second fork shaft, and an interlocking rack is fixedly sleeved on the position of the interlocking shaft corresponding to the first gear shifting gear, the interlocking rack is meshed with the first gear shifting gear, the interlocking shaft is arranged in parallel to the first shifting fork shaft, a part of space direction overlapping area is preset on the second shifting fork shaft and the third shifting fork shaft, an interlocking guide hole is formed in the interlocking shaft corresponding to the overlapping area, an interlocking block is inserted into the interlocking guide hole, a fixed support frame is arranged in the space of the overlapping area, the support frame is provided with a first pin hole, a second pin hole and a guide sleeve, and the interlocking block of the interlocking shaft is arranged in the guide sleeve; in a neutral state, a first pin hole is formed in the position, facing the second declutch shift shaft, of the guide sleeve, and is communicated to a corresponding first interlocking groove of the second declutch shift shaft, a second pin hole is formed in the position, facing the third declutch shift shaft, of the guide sleeve, and is communicated to a corresponding second interlocking groove of the third declutch shift shaft; the interlocking device comprises a first pin hole, a second pin hole, an interlocking shaft, an interlocking block, a first interlocking pin, a second interlocking pin and an interlocking block, wherein the first interlocking pin is inserted in the first pin hole, the second interlocking pin is inserted in the second pin hole, a guide inner groove is formed in the position, corresponding to the whole section of a dynamic region of the interlocking shaft, exposed contact positions of the interlocking block, the first interlocking pin and the second interlocking pin are arc surfaces, guide arc surfaces are respectively arranged at two ends of the guide inner groove in the length direction, the first interlocking pin and the second interlocking pin are not protruded out of the outer ends of the corresponding pin holes in the initial position, the sum of the axial lengths of the first interlocking pin, the second interlocking pin and the interlocking block is larger than the corresponding width size of an overlapping region, the interlocking block is movably arranged along the interlocking guide holes, and the arc surfaces at the inner ends of the two interlocking pins are respectively arranged in.

It is further characterized in that:

a gear block is integrated on the supporting frame, and the rear end face of a first gear shifting fork of the first shifting fork shaft is closely attached to the front end face of the gear block, so that the first shifting fork shaft can only shift forward and can only be correspondingly provided with one gear;

the stop block and the guide sleeve are integrally arranged, a large-diameter guide ring is arranged at the position, corresponding to the guide sleeve, of the interlocking shaft, and the large-diameter guide ring is arranged in a manner of clinging to the inner annular wall of the guide sleeve, so that the stable and reliable linear traveling of the interlocking shaft is ensured;

the first shifting fork shaft and the third shifting fork shaft are coaxially arranged, and the third shifting fork shaft is arranged behind the first shifting fork shaft at intervals, so that the structure of the whole transmission is simple to manufacture;

the interlocking guide holes are arranged in the middle area of the lengths of the two guide inner grooves, and the lengths of the guide inner grooves ensure that the corresponding gears are accurately and reliably switched.

After the gear shifting device is adopted, after the second shifting fork shaft or the third shifting fork shaft is shifted, the first shifting fork shaft is shifted forwards, and then the interlocking shaft is retracted, so that the interlocking pin is inserted into the interlocking groove of the shifting fork shaft which is not shifted, and the shifting fork shaft which is not shifted cannot be shifted; after the second shifting fork shaft and the third shifting fork shaft are respectively shifted, the inner ends of the first interlocking pin and the second interlocking pin respectively press the corresponding end faces of the interlocking blocks, the first shifting fork shaft cannot be shifted, the single-gear working condition is guaranteed, the two-gear simultaneous working condition is allowed, the condition that three gears are shifted simultaneously is prevented, the gear box is prevented from being locked, and the gear box is damaged.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

the names corresponding to the sequence numbers in the figure are as follows:

the gear shifting fork comprises a first shifting fork shaft 1, a second shifting fork shaft 2, a third shifting fork shaft 3, a first gear shifting rack 4, a first gear shifting fork 5, a second gear shifting rack 6, a second gear shifting fork 7, a third gear shifting rack 8, a third gear shifting fork 9, a first gear shifting gear 10, a second gear shifting gear 11, a third gear shifting gear 12, an interlocking shaft 13, an interlocking rack 14, an overlapping region 15, an interlocking guide hole 16, an interlocking block 17, a support frame 18, a first pin hole 19, a second pin hole 20, a guide sleeve 21, a gear block 22, a first interlocking groove 23, a large-diameter guide ring 24, a second interlocking groove 25, a first interlocking pin 26, a second interlocking pin 27 and a guide inner groove 28.

Detailed Description

A novel interlocking mechanism of a multi-gear transmission is shown in figure 1: the gear shifting fork comprises three gear shifting fork shafts arranged on the same plane, specifically a first fork shaft 1, a second fork shaft 2 and a third fork shaft 3, wherein the first fork shaft 1 is a half-gear fork shaft and can only shift gears in one direction, a first gear shifting rack 4 and a first gear shifting fork 5 are fixedly arranged on the first fork shaft 1, a second gear shifting rack 6 and a second gear shifting fork 7 are fixedly arranged on the second fork shaft 2, a third gear shifting rack 8 and a third gear shifting fork 9 are fixedly arranged on the third fork shaft 3, the first fork shaft 1, the second fork shaft 2 and the third fork shaft 3 are arranged in parallel, the first gear shifting rack 4 is meshed and connected with the first gear shifting gear 10, the second gear shifting rack 6 is meshed and connected with the second gear shifting gear 11, the third gear shifting rack 8 is meshed and connected with the third gear shifting gear 12, and an interlocking shaft 13 is arranged in an area between the first fork shaft 1 and the second fork shaft 2, an interlocking rack 14 is fixedly sleeved on the position, corresponding to the first gear shifting gear 10, of an interlocking shaft 13, the interlocking rack 14 is meshed and connected with the first gear shifting gear 10, the interlocking shaft 13 is arranged in parallel to the first shifting fork shaft 1, a part of space direction overlapping area 15 is preset on the second shifting fork shaft 2 and the third shifting fork shaft 3, an interlocking guide hole 16 is formed in the interlocking shaft 13, corresponding to the overlapping area 15, an interlocking block 17 is inserted into the interlocking guide hole 16, a fixed support frame 18 is arranged on the space of the overlapping area 15, the support frame 18 is provided with a first pin hole 19, a second pin hole 20 and a guide sleeve 21, and the interlocking block 17 of the interlocking shaft 13 is arranged in the guide sleeve 21; in a neutral state, a first pin hole 19 is formed in the position, facing the second declutch shift shaft 2, of the guide sleeve 21, the first pin hole 19 is communicated to a corresponding first interlocking groove 23 of the second declutch shift shaft 1, a second pin hole 20 is formed in the position, facing the third declutch shift shaft 3, of the guide sleeve 21, and the second pin hole 20 is communicated to a corresponding second interlocking groove 25 of the third declutch shift shaft 3;

a first interlocking pin 26 is inserted into the first pin hole 19, a second interlocking pin 27 is inserted into the second pin hole 20, a guide inner groove 28 is arranged at the position of the whole section of the dynamic region of the interlocking shaft 13 corresponding to the interlocking pin, exposed contact positions of the interlocking block 17, the first interlocking pin 26 and the second interlocking pin 27 are all arc surfaces, guide arc surfaces are respectively arranged at two ends of the guide inner groove 28 in the length direction, the first interlocking pin 26 and the second interlocking pin 27 are not protruded out of the outer ends of the corresponding pin holes under the initial positions, the sum of the axial lengths of the first interlocking pin 26, the second interlocking pin 27 and the interlocking block 17 is larger than the corresponding width dimension A of the overlapping region 15, the interlocking block 17 is movably arranged along the interlocking guide hole 16, and the arc surfaces at the inner ends of the two interlocking pins are respectively closely attached to the arc surfaces at the outer end of the interlocking block 17 and the guide arc surfaces at the outer end of the guide inner groove 28 under.

A gear block 22 is integrated on the supporting frame 18, and the rear end surface of the first gear shifting fork 5 of the first shifting fork shaft 1 is closely attached to the front end surface of the gear block 22, so that the first shifting fork shaft 1 can only shift forward and can only be correspondingly provided with one gear;

the stop block 22 and the guide sleeve 21 are integrally arranged, a large-diameter guide ring 24 is arranged at the position of the interlocking shaft 13 corresponding to the guide sleeve 21, and the large-diameter guide ring 24 is arranged to be attached to the inner annular wall of the guide sleeve 21, so that stable and reliable linear traveling of the interlocking shaft 13 is ensured;

the first shifting fork shaft 1 and the third shifting fork shaft 3 are coaxially arranged, and the third shifting fork shaft 3 is arranged behind the first shifting fork shaft 1 at intervals, so that the structure of the whole transmission is simple to manufacture;

the interlocking guide holes 16 are arranged in the middle region of the length of the two guide inner grooves 28, and the length of the guide inner grooves 28 ensures that the corresponding gears can be switched accurately and reliably.

In the specific implementation: the first shifting fork shaft is a coupling gear shifting fork shaft, the second shifting fork shaft is a second-fourth gear shifting fork shaft, and the third shifting fork shaft is a third gear shifting fork shaft.

When the interlocking operation is carried out, the working condition I, I and III shift fork shafts are in a first gear or a third gear, the shift fork shafts move, the second interlocking pins leave the first interlocking grooves and are pushed downwards, the second interlocking pins abut against the upper surfaces of the interlocking blocks, the coupling shift fork shafts engage the coupling blocks forwards, the interlocking shafts are synchronously linked and retreat, the round corners of the interlocking blocks slide on the second interlocking pins to push the interlocking blocks to move downwards, the interlocking blocks then push the first interlocking pins to move downwards to abut against the first interlocking grooves of the two and four shift fork shafts, the two and four shift fork shafts cannot move forwards and backwards and cannot enter the gears, and the interlocking is completed;

under the working conditions that a second-gear shifting fork shaft and a fourth-gear shifting fork shaft are in gear shifting for the second gear or the fourth gear, a second shifting fork shaft moves, a first interlocking pin leaves an interlocking groove, the first interlocking pin is pushed upwards, the first interlocking pin butts against an interlocking block, a coupling gear shifting fork shaft is in forward gear shifting, the interlocking shaft is synchronously linked to move backwards, a fillet of the interlocking block slides on the first interlocking pin to push the interlocking block to move upwards, the interlocking block pushes the second interlocking pin to move upwards to prop against the interlocking groove of a third-gear shifting fork shaft, the third-gear shifting fork shaft cannot move forwards and backwards and cannot enter the gear, and interlocking is completed;

under the working condition that the first gear shifting fork shaft is in gear and the second gear is in gear, the second interlocking pin is separated from the interlocking groove, the second interlocking pin is pushed downwards to abut against the interlocking block, the second gear shifting fork shaft is in gear and the second gear is in gear and the fourth gear, the shifting fork shaft moves, the second interlocking pin is separated from the interlocking groove, the second interlocking pin is pushed upwards to abut against the interlocking block, the interlocking block cannot move backwards, the interlocking shaft cannot move backwards, namely, the coupling shifting fork shaft cannot move forwards, the coupling gear cannot be engaged, and interlocking is completed.

After the interlocking gear shifting device is adopted, the gear shifting actuating mechanism is connected with the interlocking rack to drive the interlocking shaft to move backwards to participate in interlocking work, and the first gear shifting rack and the interlocking rack are meshed with the same first gear shifting gear, so that the first shifting fork shaft and the interlocking shaft are linked, namely the interlocking shaft is active, the first shifting fork shaft is also active, the interlocking shaft is inactive, and the first shifting fork shaft is also inactive; after the second shifting fork shaft or the third shifting fork shaft is shifted, the first shifting fork shaft is shifted forwards, and then the interlocking shaft is retracted, so that the interlocking pin is inserted into the interlocking groove of the shifting fork shaft which is not shifted, and the shifting fork shaft which is not shifted cannot be shifted; after the second shifting fork shaft and the third shifting fork shaft are respectively shifted, the inner ends of the first interlocking pin and the second interlocking pin are respectively pressed against the corresponding end surfaces of the interlocking blocks, the first shifting fork shaft cannot be shifted, the single-gear working condition is guaranteed, the two-gear simultaneous working condition is allowed, the condition that three gears are shifted simultaneously is prevented, the gear box is prevented from being locked, and the gear box is damaged; compared with electric control on-off control, mechanical interlocking is more reliable, the working condition of double-gear in-gear working of the double-input-shaft multi-gear double-intermediate-shaft transmission is met, the wrong working condition of three gears in gear is prevented, the transmission is protected, the cost is reduced, and the reliability of the transmission is improved.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.