CN104235354A - Novel shifting fork for commercial vehicle - Google Patents
Novel shifting fork for commercial vehicle Download PDFInfo
- Publication number
- CN104235354A CN104235354A CN201410397012.2A CN201410397012A CN104235354A CN 104235354 A CN104235354 A CN 104235354A CN 201410397012 A CN201410397012 A CN 201410397012A CN 104235354 A CN104235354 A CN 104235354A
- Authority
- CN
- China
- Prior art keywords
- shift fork
- shifting fork
- shift
- fork
- allocating slot
- 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.)
- Granted
Links
Classifications
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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
- F16H2306/00—Shifting
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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
- F16H2700/00—Transmission housings and mounting of transmission components therein; Cooling; Lubrication; Flexible suspensions, e.g. floating frames
- F16H2700/02—Transmissions, specially for working vehicles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
The invention provides a novel shifting fork for a commercial vehicle. The invention relates to an accessory for a speed changer of the commercial vehicle, in particular to a novel aluminium alloy shifting fork for the commercial vehicle. The invention aims at providing the novel shifting fork for the commercial vehicle, and the novel shifting fork is comfortable in gear shifting, low in noise, high in wear resistance, smooth in gear shifting and rapid in response after the structure of the shifting fork is improved. The novel shifting fork comprises a shifting fork head, a shifting fork body and a shifting fork pin, wherein the shifting fork head is provided with a shifting fork shaft mounting hole; press sleeves, namely, shifting fork hole pressure lining sleeves are arranged at the shifting fork shaft mounting hole; the shifting fork hole pressure lining sleeves are double-alloy lining sleeves and are respectively arranged at the two ends; the inner layer of each shifting fork hole pressure lining sleeve is provided with an anti-friction plastic layer, so that the friction coefficient is small.
Description
Technical field
The present invention relates to a kind of commercial car speed changer accessory, particularly relate to commercial car novel aluminum alloy shift fork.
Background technique
Along with the development of automobile industry, particularly the research and development of energy-conserving and environment-protective new automobile are released, that to challenge also be opportunity to auto-parts, the particularly heavier-weight of commercial car own, each component all want weight reduction, our company, in conjunction with the utilization of new material and new technology, improves gearshift fork, to adapt to automobile industry to Component requirement; The place that shift fork the most easily weares and teares is exactly the position that shift fork contacts with synchronizer gear sleeve, and do not turn because synchronizer gear sleeve transfers shift fork at high-speed rotary, shift fork weares and teares, or insufficient strength, gear may be caused to hang not in place, and lose rank, or shift fork breaks.
Summary of the invention
The object of the present invention is to provide a kind of commercial car Novel shifting fork, making its gear shift smoothness by improving shifting fork structure, reducing noise, improve that wear-resisting, gear shift is level and smooth, response is fast.
Technological scheme of the present invention is a kind of commercial car Novel shifting fork, comprise shift fork head, shift fork body, shift fork pin, shift fork head has declutch shift shaft mounting hole, declutch shift shaft mounting hole has gland, i.e. shift fork hole pressure lining, two alloy bushings, each one of two ends, shift fork hole pressure lining internal layer is anti-attrition plastic layer, and friction ractor is little, it is characterized in that: the installation of shift fork hole pressure lining adopts hydraulic numerical control press machine gland, be convenient for measuring interference power, and do contact sealing process, prevent shift fork hole from pressing lining to come off, shift fork gear shift is level and smooth, response is fast; Shift fork and tooth overlap to contact and are provided with a pair friction pair, and friction pair surface is circular arc type structure, makes shift fork and tooth be socketed thixotroping and becomes linear contact lay, reduce resistance and the area of contact of overlapping with tooth when sliding, improve gear shift smoothness and reduce noise more than 70%; Shift fork alloy matrix aluminum studs with two pincers parts: one is allocating slot block, and be arranged on shift fork body, allocating slot block is provided with groove, during shift, gear shifting rod inserts promotion allocating slot block in the fast groove of allocating slot and realizes shift fork motion; Another waveform geosynclinal block, be arranged on shift fork head, the exposed face of waveform geosynclinal block establishes contoured shaped recess, and the waveform groove on shift fork head is for realizing gear shift self-locking use, and two geosynclinal block transfer mold precision are high, and mold insert adopts essence punching and plain grinding processing, to guarantee quality of fit; Shift fork body adopts light weight, high tensile aluminium alloy R14 as body material; Shift fork body establishes symmetrical reinforcing rib structure, to bear berth-changing strength; Allocating slot block and waveform geosynclinal block adopt 35# steel to make.
Further shift fork adopts lightweight high-intensity aluminum alloy R14 as shift fork body material, weight reduction.
Beneficial effect of the present invention is, for berth-changing strength effect, has carried out architecture advances to shift fork fork face; Make speed changer optimized integral structure, reduce the surface of contact in fork shaft and hole, the slip resistance of reduction shift fork on fork shaft greatly, overcomes generation shift fork and fork shaft kills phenomenon; Reduce noise more than 70%; Gear shift response is fast, and accurately locate, gear shift is steady.
Structure of the present invention is further illustrated below in conjunction with drawings and Examples
Fig. 1 is the main schematic diagram of embodiment of the present invention structure
Fig. 2 is the right schematic diagram of embodiment of the present invention structure
Fig. 3 is the left schematic diagram of embodiment of the present invention structure
Fig. 4 is embodiment of the present invention structure shift fork head cut-away view
Shift fork pin 1, allocating slot block 2, declutch shift shaft mounting hole 3, waveform geosynclinal block 4, shift fork head 5, shift fork body 6, shift fork hole pressure lining 7, friction pair 8 in figure.
Embodiment
In figure: commercial car Novel shifting fork, comprise shift fork head 5, shift fork body 6, shift fork pin 7, shift fork head 5 has declutch shift shaft mounting hole 3, declutch shift shaft mounting hole 3 has gland, i.e. shift fork hole pressure lining 7, two alloy bushings, each one of two ends, shift fork hole pressure lining 7 internal layer is anti-attrition plastic layer, and the installation of shift fork hole pressure lining 7 adopts hydraulic numerical control press machine gland, is convenient for measuring interference power, and do contact sealing process, prevent shift fork hole from pressing lining 7 to come off, shift fork and tooth overlap contacting point and are provided with a pair friction pair 8, and friction pair 8 surface is circular arc type structure; Shift fork alloy matrix aluminum studs with two pincers parts: one is allocating slot block 2, and be arranged on shift fork body 6, allocating slot block 2 is provided with groove, during shift, gear shifting rod inserts promotion allocating slot block 2 in allocating slot block 2 groove and realizes shift fork motion; Another waveform geosynclinal block 4, be arranged on shift fork head 5, the exposed face of waveform geosynclinal block 4 establishes contoured shaped recess, and the waveform groove 4 on shift fork head 5 uses for realizing gear shift self-locking.Shift fork adopts light weight, high tensile aluminium alloy R14 as body material; Shift fork body 6 establishes symmetrical reinforcing rib structure, to bear berth-changing strength; Allocating slot block 2 and waveform geosynclinal block 4 adopt 35# steel to make.
Processing technology:
1). based on the feature of intensity of aluminum alloy than Cast Steel difference, during for meeting gear shift, berth-changing strength is to shift fork requirement of strength moment, shift fork body and shift fork cast form for the first time;
2). allocating slot block and the meticulous die casting of waveform geosynclinal block form, and mold insert adopts essence punching and plain grinding processing, through carburizing and quenching process;
3. shift fork adopts Cutter Body Processing with Machining Center, disposable clamping, ensures the cylindricity in the position dimension of shift fork own and main aperture aperture and hole;
4). shift fork body intensity reaches static pressure and static load 7500-8000N;
5). adopt on digitally-controlled press machine and carry out shift fork gland, when guaranteeing accurately to control gland, pressure is at 3KN-5KN, guarantees gland quality;
6). fork face and claw hardness are greater than HRB60, and two fork face perpendicularity are 0.07-0.1.
Claims (2)
1. a commercial car Novel shifting fork, comprise shift fork head, shift fork body, shift fork pin, shift fork head has declutch shift shaft mounting hole, declutch shift shaft mounting hole has gland, i.e. shift fork hole pressure lining, two alloy bushings, each one of two ends, shift fork hole pressure lining internal layer is anti-attrition plastic layer, friction ractor is little, it is characterized in that: the installation of shift fork hole pressure lining adopts hydraulic numerical control press machine gland, is convenient for measuring interference power, and do contact sealing process; Shift fork and tooth overlap to contact and are provided with a pair friction pair, and friction pair surface is circular arc type structure, makes shift fork and tooth be socketed thixotroping and becomes linear contact lay; Shift fork alloy matrix aluminum studs with two pincers parts: one is allocating slot block, be arranged on shift fork body, allocating slot block is provided with groove, during shift, gear shifting rod inserts promotion allocating slot block in allocating slot block groove and realizes shift fork motion, another waveform geosynclinal block, be arranged on shift fork head, the exposed face of waveform geosynclinal block establishes contoured shaped recess, two geosynclinal block transfer molds are meticulous, and mold insert adopts essence punching and plain grinding processing; Shift fork body adopts light weight, high tensile aluminium alloy R14 as body material; Shift fork body establishes symmetrical reinforcing rib structure, to bear berth-changing strength; Allocating slot block and waveform geosynclinal block adopt 35# steel to make.
2. the production technology of a kind of commercial car Novel shifting fork according to claim 1, is characterized in that:
1). based on the feature of intensity of aluminum alloy than Cast Steel difference, during for meeting gear shift, berth-changing strength is to shift fork requirement of strength moment, shift fork body and shift fork cast form for the first time;
2). allocating slot block and the meticulous die casting of waveform geosynclinal block form, and mold insert adopts essence punching and plain grinding processing, through carburizing and quenching process;
3. shift fork adopts Cutter Body Processing with Machining Center, disposable clamping, ensures the cylindricity in the position dimension of shift fork own and main aperture aperture and hole;
4). shift fork body intensity reaches static pressure and static load 7500-8000N;
5). adopt on digitally-controlled press machine and carry out shift fork gland, when guaranteeing accurately to control gland, pressure is at 3KN-5KN, guarantees gland quality;
6). fork face and claw hardness are greater than HRB60, and two fork face perpendicularity are 0.07-0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410397012.2A CN104235354B (en) | 2014-08-14 | 2014-08-14 | A kind of commercial car Novel shifting fork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410397012.2A CN104235354B (en) | 2014-08-14 | 2014-08-14 | A kind of commercial car Novel shifting fork |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235354A true CN104235354A (en) | 2014-12-24 |
| CN104235354B CN104235354B (en) | 2016-08-24 |
Family
ID=52224001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410397012.2A Expired - Fee Related CN104235354B (en) | 2014-08-14 | 2014-08-14 | A kind of commercial car Novel shifting fork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104235354B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290088A (en) * | 2017-06-29 | 2017-10-24 | 柳州上汽汽车变速器有限公司 | The measuring method of shift fork bushing withdrawal force |
| CN111637223A (en) * | 2020-06-19 | 2020-09-08 | 苏州东风精冲工程有限公司 | Anti-disengaging structure for shifting fork bushing of gearbox |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1262692A2 (en) * | 2001-06-01 | 2002-12-04 | GIF Gesellschaft für Industrieforschung mbH | Transmission |
| CN202203382U (en) * | 2011-07-29 | 2012-04-25 | 中国第一汽车股份有限公司 | Gear shifting mechanism of mechanical gearbox |
| CN202274080U (en) * | 2011-08-24 | 2012-06-13 | 江西国兴集团兴国齿轮箱拨叉有限公司 | Novel vehicle reverse gear shifting fork |
| CN202883995U (en) * | 2012-11-13 | 2013-04-17 | 象山申达轿车配件厂 | Gear shifting fork |
| CN202992151U (en) * | 2013-01-05 | 2013-06-12 | 江西国兴集团兴国齿轮箱拨叉有限公司 | Novel shifting fork |
| CN203770615U (en) * | 2014-01-13 | 2014-08-13 | 宁海县满益汽配有限公司 | Gear shifting fork for automobile transmission |
-
2014
- 2014-08-14 CN CN201410397012.2A patent/CN104235354B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1262692A2 (en) * | 2001-06-01 | 2002-12-04 | GIF Gesellschaft für Industrieforschung mbH | Transmission |
| CN202203382U (en) * | 2011-07-29 | 2012-04-25 | 中国第一汽车股份有限公司 | Gear shifting mechanism of mechanical gearbox |
| CN202274080U (en) * | 2011-08-24 | 2012-06-13 | 江西国兴集团兴国齿轮箱拨叉有限公司 | Novel vehicle reverse gear shifting fork |
| CN202883995U (en) * | 2012-11-13 | 2013-04-17 | 象山申达轿车配件厂 | Gear shifting fork |
| CN202992151U (en) * | 2013-01-05 | 2013-06-12 | 江西国兴集团兴国齿轮箱拨叉有限公司 | Novel shifting fork |
| CN203770615U (en) * | 2014-01-13 | 2014-08-13 | 宁海县满益汽配有限公司 | Gear shifting fork for automobile transmission |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107290088A (en) * | 2017-06-29 | 2017-10-24 | 柳州上汽汽车变速器有限公司 | The measuring method of shift fork bushing withdrawal force |
| CN107290088B (en) * | 2017-06-29 | 2023-04-07 | 柳州上汽汽车变速器有限公司 | Method for measuring pulling force of shifting fork bush |
| CN111637223A (en) * | 2020-06-19 | 2020-09-08 | 苏州东风精冲工程有限公司 | Anti-disengaging structure for shifting fork bushing of gearbox |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104235354B (en) | 2016-08-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 342400 Jiangxi city of Ganzhou province Xingguo County Red Gate Industrial Park C District Xingguo gearbox fork Co. Ltd. Applicant after: JIANGXI GL TRANSMISSION TECHNOLOGY CO., LTD. Address before: 342400 Jiangxi city of Ganzhou province Xingguo County Red Gate Industrial Park C District Xingguo gearbox fork Co. Ltd. Applicant before: JIANGXI GUOXING GROUP XINGGUO GEAR BOX SHIFTING FORK CO., LTD. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: JIANGXI GUOXING GROUP XINGGUO GEAR CASE MOVING FORK CO., LTD. TO: JIANGXI GUANGLAN TRANSMISSION TECHNOLOGY CO., LTD. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 Termination date: 20190814 |