CN112879558A - Friction-free gear shifting mechanism for gear shifting gear box - Google Patents
Friction-free gear shifting mechanism for gear shifting gear box Download PDFInfo
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- CN112879558A CN112879558A CN202110165247.9A CN202110165247A CN112879558A CN 112879558 A CN112879558 A CN 112879558A CN 202110165247 A CN202110165247 A CN 202110165247A CN 112879558 A CN112879558 A CN 112879558A
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- Prior art keywords
- shifting
- shift
- gear
- fork
- box
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0412—Cooling or heating; Control of temperature
- F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
- F16H57/0417—Heat exchangers adapted or integrated in the gearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/0278—Constructional features of the selector lever, e.g. grip parts, mounting or manufacturing
- F16H2059/0282—Lever handles with lock mechanisms, e.g. for allowing selection of reverse gear or releasing lever from park position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H2063/3093—Final output elements, i.e. the final elements to establish gear ratio, e.g. dog clutches or other means establishing coupling to shaft
- F16H2063/3096—Sliding keys as final output elements; Details thereof
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a frictionless gear shifting mechanism for a gear shifting gear box, which comprises a box body and an input shaft, the input shaft is longitudinally arranged in the box body, at least two gears with different transmission ratios are arranged on the input shaft, the input shaft is also sleeved with a gear shifting sleeve which is positioned between two adjacent gears, the front end and the rear end of the gear shifting sleeve are both provided with external splines, one side of the gear, which is close to the gear shifting sleeve, is provided with an internal spline matched with the external spline, the middle part of the gear shifting sleeve is provided with a sliding groove, a shifting component is arranged in the sliding chute and is used for shifting the gear shifting sleeve to move back and forth on the input shaft, a lubricating component is also arranged between the shifting component and the gear shifting sleeve and is used for injecting lubricating oil into the sliding groove to realize frictionless contact between the shifting component and the gear shifting sleeve, thereby can effectively solve the gear box and be heated because the shift fork wearing and tearing lead to damaging the problem of shutting down in service.
Description
Technical Field
The invention belongs to the technical field of industrial gearboxes, and particularly relates to a frictionless gear shifting mechanism for a gear shifting gearbox.
Background
In the industrial manufacturing industry, the gear shifting mechanism can be used when the gear shifting gear box with the pump lubrication has double-speed-ratio and multi-speed-ratio output.
The gear shifting gear box is a variable speed device capable of storing different rotating speeds and torque transmission, the safety and reliability of a gear shifting mechanism of the gear shifting gear box directly influence the use of the whole device, at present, two gear sleeves are adopted for sliding torque transmission of a common gear shifting mechanism, a driving lever and a bearing are driven by an external hydraulic cylinder or an air cylinder to stir the gear sleeves to carry out different gear conversion, and as the existing gear box is complex in structure and large in load, more and more customers pursue high-power gear boxes. Lead to the weight of gear and the increase of volume like this to lead to the load increase at the position of shifting, simultaneously because the welding of the structure of shifting is more, the processing is difficult to guarantee the accuracy nature, leads to the problem frequent, mainly concentrates on as follows: (1) when the device runs for a long time, the pressure of an external hydraulic cylinder or an air cylinder is insufficient, so that the trip gear is disengaged; (2) in actual assembly, due to machining errors, the adjustment and centering of the shifting fork and the shifting sleeve are difficult to ensure; (3) during operation, the shifting fork and the shifting sleeve are in long-time contact friction, so that the temperature of the shifting fork and the shifting sleeve is increased and damaged, and the gear can not be shifted normally.
Disclosure of Invention
The invention provides a frictionless gear shifting mechanism for a gear shifting gear box, which can effectively solve the problem that the gear box is damaged and shut down due to the fact that a shifting fork is abraded and heated in the operation process.
Therefore, the technical scheme adopted by the invention is as follows: the utility model provides a gear shifting gear box is with frictionless gearshift, includes box and input shaft, the input shaft vertically sets up in the box, be provided with two different gears of drive ratio on the input shaft at least, it has the cover to shift to go back the cover on the input shaft, shift the cover and be located between two adjacent gears, both ends all are provided with the external splines around the cover of shifting, one side that is close to the cover of shifting on the gear is provided with the internal spline with external splines assorted, the middle part of the cover of shifting is provided with the spout, be provided with in the spout and stir the subassembly, stir the subassembly and be used for stirring the cover of shifting and shift the epaxial back-and-forth movement, it still is provided with lubricating assembly to stir between subassembly and the cover of shifting, lubricating assembly is used for pouring into lubricating oil into the spout in and makes to stir subassembly and shift and.
Preferably as above-mentioned scheme, stir the subassembly including the fork axle that transversely sets up, the right-hand member setting of fork axle is in the box, and the left end is provided with the handle of shifting after passing the box, the interval is fixed about the fork axle is provided with the fork seat, two shift fork subassembly is fixed to be provided with between the fork seat, the unsettled setting of fork subassembly is in the spout, and when rotating the handle of shifting, can drive the fork axle and rotate, makes the fork seat drive the fork subassembly and rotate to make the fork subassembly promote the cover back-and-forth movement of shifting.
Further preferably, the lubricating component comprises a high-pressure hose, one end of the high-pressure hose just penetrates through the shifting fork component, the other end of the high-pressure hose is fixedly arranged on the box body, and lubricating oil can enter between the shifting fork component and the sliding groove through the high-pressure hose.
Further preferably, the fork assembly comprises a left fork and a right fork which are fixedly connected through a connecting bolt and a locating pin.
Preferably, the shifting fork seat and the shifting handle are fixedly arranged on the shifting fork shaft through a flat key and a bolt.
Further preferably, the upper end of the gear shifting handle is provided with a locking assembly used for the gear shifting handle to shift in place and preventing loosening, the locking assembly comprises a locking bolt and a gear shifting locking seat fixedly arranged outside the box body, three limiting holes are formed in the gear shifting locking seat according to the track of the gear shifting handle, a locking hole is formed in the gear shifting handle, and after the gear shifting handle is rotated, the locking hole is aligned with the limiting holes, the locking bolt penetrates through the locking hole and is screwed down in the limiting holes to lock the gear shifting handle.
Preferably, the left end and the right end of the shifting fork shaft are fixedly provided with spacing rings located in the box body, a copper sleeve is arranged on the outer side of each spacing ring, an end cover fixed outside the box body is sleeved outside the copper sleeve on the left side, and a sealing ring used for sealing is arranged between each end cover and the shifting fork shaft.
Further preferably, a self-contained pump lubricating structure is arranged in the box body and communicated with the high-pressure hose.
The invention has the beneficial effects that:
1) the gear shifting sleeve moves back and forth through the shifting assembly, and compared with the existing shifting device, the condition that the gear is jumped off due to insufficient pressure of an external hydraulic cylinder or an air cylinder when the gear shifting sleeve runs for a long time can not occur;
2) the shift fork subassembly is unsettled in the spout to be provided with lubricating arrangement, make lubricating oil can pour into and stir between subassembly and the spout, realize stirring the subassembly and shift the frictionless contact between the cover, can effectively solve at the gear box during operation, because the shift fork rubs with the long-time contact of cover of shifting, lead to shift fork and the cover temperature rise of shifting to damage, the unable normal problem of shifting of appearance. .
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is a cross-sectional view of M-M in fig. 1.
Fig. 3 is a schematic structural view of the locking assembly of the present invention.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1-3, a frictionless gear shifting mechanism for a gear shifting gearbox mainly comprises a box body 1, an input shaft 2, a gear 3, a gear shifting sleeve 4, a shifting assembly 5 and a lubricating assembly 6. Input shaft 2 vertically sets up in box 1, be provided with two different gear 3 of drive ratio on the input shaft 2 at least, be provided with two bearings between gear 3 and the input shaft 2, it has shift sleeve 4 still to overlap on the input shaft 2, pass through the spline fit at input shaft 2 and shift sleeve 4, shift sleeve 4 is located between two adjacent gear 3, both ends all are provided with external splines 4.1 around shift sleeve 4, one side that is close to shift sleeve on the gear 3 is provided with and external splines 4.1 assorted internal splines 3.1, be prior art above, no longer describe herein repeatedly.
Be provided with spout 4.2 at the middle part of the cover 4 that shifts, be provided with in the spout 4.2 and stir subassembly 5, stir subassembly 5 and be used for stirring shift sleeve 4 back-and-forth movement on input shaft 2, stir subassembly 5 and shift and still be provided with lubricating component 6 between the cover 4, lubricating component 6 is used for pouring into lubricating oil into spout 4.2 in and makes and stir subassembly 5 and shift and realize no friction contact between the cover 4, only form the oil film contact.
The specific structure of the shifting assembly 5 comprises a shifting fork shaft 5.1 which is transversely arranged, the right end of the shifting fork shaft 5.1 is arranged in the box body 1, the left end of the shifting fork shaft passes through the box body 1 and then is provided with a shifting handle 5.2, shifting fork seats 5.3 are fixedly arranged on the shifting fork shaft 5.1 at intervals, a shifting fork assembly is fixedly arranged between the two shifting fork seats 5.3, the shifting fork assembly is arranged in a sliding groove 4.2 in a suspension mode, when the shifting handle 5.2 is rotated, the shifting fork shaft 5.1 can be driven to rotate, the shifting fork seats 5.3 drive the shifting fork assembly to rotate, and therefore the shifting fork assembly pushes the shifting sleeve 4 to move back and forth. The stirring assembly is simple in structure, reduces cost and is convenient to maintain.
The specific structure of the lubricating assembly 6 comprises a high-pressure hose 6.1, one end of the high-pressure hose 6.1 just penetrates through the shifting fork assembly, the other end of the high-pressure hose is fixedly arranged on the box body 1, and lubricating oil can enter between the shifting fork assembly and the sliding groove 4.2 through the high-pressure hose 6.1.
The shifting fork assembly comprises a left shifting fork 5.5 and a right shifting fork 5.6, and the left shifting fork 5.5 and the right shifting fork 5.6 are fixedly connected through a connecting bolt 5.7 and a positioning pin 5.8. The shifting fork assembly is composed of a left shifting fork 5.5 and a right shifting fork 5.6, and installation of the shifting fork assembly is facilitated.
In order to firmly fix the shifting fork seat 5.3 and the shifting handle 5.2 on the shifting fork shaft 5.1, flat keys and bolts are arranged between the shifting fork seat 5.3 and the shifting fork shaft 5.1 and between the shifting handle 5.2 and the shifting fork shaft 5.1.
The gear shifting handle 5.2 is provided with a locking assembly used for the gear shifting handle to shift in place and preventing loosening, the locking assembly comprises a locking bolt 5.4 and a gear shifting locking seat 5.9 fixedly arranged outside the box body 1, a locking hole is formed in the gear shifting handle 5.2, three limiting holes are formed in the gear shifting locking seat 5.9 according to the track of the gear shifting handle 5.2, one limiting hole corresponds to the state that the gear shifting sleeve 4 and the two gears 3 are both separated, and the other two limiting holes correspond to the state that the gear shifting sleeve 4 is meshed with one gear 3. When the gear shifting handle 5.2 is rotated to align the locking hole with the limiting hole, the locking bolt 5.4 penetrates through the locking hole and is screwed down on the limiting hole to lock the gear shifting handle 5.2 to prevent looseness and falling.
In order to ensure the sealing in the box body 1, a spacer ring 5.10 positioned in the box body 1 is fixedly arranged at the left end and the right end of the shifting fork shaft 5.1, a copper sleeve 5.11 is arranged at the outer side of the spacer ring 5.10, an end cover 5.12 fixed outside the box body is sleeved outside the left copper sleeve 5.11, and a sealing ring 5.13 for sealing is arranged between the end cover 5.12 and the shifting fork shaft 5.1.
In order to facilitate the replacement of the lubricating oil in the box body 1, a self-contained pump lubricating structure is arranged in the box body 1. For the change of lubricating oil in the convenient spout 4.2, will take pump lubricating structure and high-pressure hose 6.1 intercommunication certainly, when changing lubricating oil after the intercommunication, can also further reduce the heat that produces between shift fork assembly and the cover 4 of shifting.
Claims (6)
1. The utility model provides a gear shifting gear box is with no friction gearshift, includes box (1) and input shaft (2), input shaft (2) vertically set up in box (1), be provided with two different gear (3) of drive ratio on input shaft (2) at least, it has shift sleeve (4) to go back the cover on input shaft (2), shift sleeve (4) are located between two adjacent gear (3), both ends all are provided with external splines (4.1) around shift sleeve (4), one side that is close to shift sleeve on gear (3) is provided with and external splines (4.1) assorted internal splines (3.1), its characterized in that: a sliding groove (4.2) is formed in the middle of the gear shifting sleeve (4), a shifting assembly (5) is arranged in the sliding groove (4.2), the shifting assembly (5) is used for shifting the gear shifting sleeve (4) to move on the input shaft (2) back and forth, a lubricating assembly (6) is further arranged between the shifting assembly (5) and the gear shifting sleeve (4), and the lubricating assembly (6) is used for injecting lubricating oil into the sliding groove (4.2) to enable the shifting assembly (5) and the gear shifting sleeve (4) to be in friction-free contact;
stir subassembly (5) including horizontal declutch shift shaft (5.1) that sets up, the right-hand member setting of declutch shift shaft (5.1) is in box (1), and the left end is provided with handle (5.2) of shifting after passing box (1), fixed declutch shift seat (5.3), two of being provided with in interval about declutch shift shaft (5.1) about fixed between declutch shift seat (5.3) shift fork subassembly, the unsettled setting of shift fork subassembly is in spout (4.2), when rotating handle (5.2) of shifting, can drive declutch shift shaft (5.1) and rotate, makes declutch shift seat (5.3) drive fork shift fork subassembly and rotates to make fork shift fork subassembly push shift sleeve (4) back-and-forth movement.
Lubricating assembly (6) include high pressure hose (6.1), the one end of high pressure hose (6.1) just passes fork assembly, and the other end is fixed to be set up on box (1), and lubricating oil can enter into between fork assembly and spout (4.2) through high pressure hose (6.1).
2. The frictionless shift mechanism for a shift gearbox according to claim 1, wherein: the shifting fork assembly comprises a left shifting fork (5.5) and a right shifting fork (5.6), and the left shifting fork (5.5) and the right shifting fork (5.6) are fixedly connected through a connecting bolt (5.7) and a positioning pin (5.8).
3. The frictionless shift mechanism for a shift gearbox according to claim 1, wherein: the shifting fork seat (5.3) and the gear shifting handle (5.2) are fixedly arranged on the shifting fork shaft (5.1) through a flat key and a bolt.
4. The frictionless shift mechanism for a shift gearbox according to claim 1, wherein: be provided with on the handle of shifting (5.2) and be used for the handle of shifting to shift and put in place and prevent the locking Assembly who takes off of pine, locking Assembly includes locking bolt (5.4) and fixed locking seat (5.9) of shifting that sets up outside box (1), it is provided with three spacing hole according to the orbit of handle of shifting (5.2) on the locking seat of shifting (5.9), be provided with the locking hole on handle of shifting (5.2), when rotating handle of shifting (5.2), make locking hole and spacing hole align the back, locking bolt (5.4) pass the locking hole and tighten handle of shifting (5.2) locking in spacing hole ability.
5. The frictionless shift mechanism for a shift gearbox according to claim 1, wherein: fixed spacer ring (5.10) that are located box (1) in both ends about shift fork axle (5.1), the outside of spacer ring (5.10) is provided with copper sheathing (5.11), and left side copper sheathing (5.11) overcoat is equipped with and fixes end cover (5.12) outside the box, be provided with between end cover (5.12) and shift fork axle (5.1) and be used for sealed sealing washer (5.13).
6. The frictionless shift mechanism for a shift gearbox according to claim 1, wherein: a self-contained pump lubricating structure is arranged in the box body (1) and communicated with the high-pressure hose (6.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110165247.9A CN112879558A (en) | 2021-02-06 | 2021-02-06 | Friction-free gear shifting mechanism for gear shifting gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110165247.9A CN112879558A (en) | 2021-02-06 | 2021-02-06 | Friction-free gear shifting mechanism for gear shifting gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112879558A true CN112879558A (en) | 2021-06-01 |
Family
ID=76055936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110165247.9A Pending CN112879558A (en) | 2021-02-06 | 2021-02-06 | Friction-free gear shifting mechanism for gear shifting gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112879558A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10299876A (en) * | 1997-04-25 | 1998-11-13 | Suzuki Motor Corp | Shift fork having lubrication function |
| JP2011127634A (en) * | 2009-12-15 | 2011-06-30 | Aisin Ai Co Ltd | Lubricating mechanism of transmission |
| CN202327061U (en) * | 2011-12-14 | 2012-07-11 | 武汉长江融达电子有限公司 | Automobile gear shifting fork |
| CN205578710U (en) * | 2016-04-15 | 2016-09-14 | 南京高精齿轮集团有限公司 | A shift fork device for shifting gears gear box |
| CN111503263A (en) * | 2020-05-22 | 2020-08-07 | 中国重型机械研究院股份公司 | Gear shifting mechanism for reduction gearbox of heavy-duty thick-belt coiler and using method |
| CN111836981A (en) * | 2018-07-03 | 2020-10-27 | 株式会社小松制作所 | Working vehicle |
-
2021
- 2021-02-06 CN CN202110165247.9A patent/CN112879558A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10299876A (en) * | 1997-04-25 | 1998-11-13 | Suzuki Motor Corp | Shift fork having lubrication function |
| JP2011127634A (en) * | 2009-12-15 | 2011-06-30 | Aisin Ai Co Ltd | Lubricating mechanism of transmission |
| CN202327061U (en) * | 2011-12-14 | 2012-07-11 | 武汉长江融达电子有限公司 | Automobile gear shifting fork |
| CN205578710U (en) * | 2016-04-15 | 2016-09-14 | 南京高精齿轮集团有限公司 | A shift fork device for shifting gears gear box |
| CN111836981A (en) * | 2018-07-03 | 2020-10-27 | 株式会社小松制作所 | Working vehicle |
| CN111503263A (en) * | 2020-05-22 | 2020-08-07 | 中国重型机械研究院股份公司 | Gear shifting mechanism for reduction gearbox of heavy-duty thick-belt coiler and using method |
Non-Patent Citations (1)
| Title |
|---|
| 王铜奎等: "双离合自动变速器拨叉耐磨性的快速验证方法", 《汽车实用技术》 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210601 |
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| RJ01 | Rejection of invention patent application after publication |