CN2355921Y - Supplementary gear-box for hand tractor - Google Patents
Supplementary gear-box for hand tractor Download PDFInfo
- Publication number
- CN2355921Y CN2355921Y CN 99227016 CN99227016U CN2355921Y CN 2355921 Y CN2355921 Y CN 2355921Y CN 99227016 CN99227016 CN 99227016 CN 99227016 U CN99227016 U CN 99227016U CN 2355921 Y CN2355921 Y CN 2355921Y
- Authority
- CN
- China
- Prior art keywords
- speed change
- change
- gear
- driving lever
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Gear-Shifting Mechanisms (AREA)
Abstract
The utility model relates to the improvement of an auxiliary speed-change mechanism for dongfeng 12 type hand tractors. The auxiliary speed-change mechanism for dongfeng 12 type hand tractors is composed of a speed-change shift rod, a speed-change rod, an auxiliary speed-change draw rod, an auxiliary speed-change shift rod, an auxiliary speed-change shift fork and an auxiliary speed-change gear. The utility model is characterized in that the outer end of the speed-change shift rod is provided with a thin rod which is directly positioned in a thin pipe corresponding to the inner end of the speed-change rod; the outer wall of the thin pipe is fixedly connected with the outer end of the auxiliary speed-change draw rod; the inner end of the auxiliary speed-change draw rod is also connected with the auxiliary speed-change shift fork through the auxiliary speed-change shift rod. The procedure of a long milling through slot arranged on the existing speed-change shift rod is omitted. The utility model has the advantages of easy production and process, low cost, flexible and convenient use and convenient maintenance.
Description
The utility model relates to a kind of improvement of secondary speed-changing mechanism of walker tractor, particularly the improvement of the secondary speed-changing mechanism of dongfeng-12 walker tractor.
The secondary speed-changing mechanism of existing dongfeng-12 walker tractor such as Fig. 1, it is by speed change driving lever 1, shifter bar 2, secondary speed change pull bar 3, secondary speed change driving lever 4, secondary gear shift fork 5, secondary variable gear 6 is formed, the outer end of speed change driving lever 1 is milled with a long groove 7, shifter bar 2 inner pipe boxes 8 are installed on the outer end of speed change driving lever 1, the outer end of its secondary speed change pull bar 3 is connected with pin 9, this pin 9 penetrates the long groove 7 in speed change driving lever 1 outer end that is arranged in it from shifter bar 2 inner pipe boxes 8, can drive secondary speed change pull bar 3 when making shifter bar 2 pullings moves forward and backward, shifter bar 2 outer ends are connected with gear change hand lever 10, be convenient to M/C, the inner of secondary speed change pull bar 3 is connected with secondary speed change driving lever 4, this pair speed change driving lever 4 is stuck in the groove 11 of secondary gear shift fork 5, and secondary gear shift fork 5 is sleeved on the secondary declutch shift shaft 12.The pusher dog 13 of secondary gear shift fork 5 is stuck in the groove 14 of secondary variable gear 6, and secondary variable gear 6 and spragging gear 15 and bearing 16 are together installed and deposited on the secondary variable shaft 17.When grasp gear change hand lever 10 push away, when drawing shifter bar 2, just make that secondary speed change pull bar 3 is done inwards, outside moving, its the secondary speed change driving lever 4 that moves through drives the left and right slip on secondary declutch shift shaft 12 of secondary gear shift fork 5, thereby the pusher dog 13 that makes secondary gear shift fork 5 is stirred secondary variable gear 6 left and right moving, and reaches the purpose of secondary speed change.But this secondary speed-changing mechanism complex structure, difficulty of processing is big, need mill long groove, and is many with material, manufacturing cost height, and easy et out of order when using, maintenance is difficulty also.
The purpose of this utility model is exactly in order to address the above problem, and a kind of handling ease is provided, and cost is low, uses reliably the secondary speed-changing mechanism of walker tractor easy to maintenance.
Technical solution of the present utility model:
A kind of secondary speed-changing mechanism of walker tractor, it is still by the speed change driving lever, shifter bar, secondary speed change pull bar, secondary speed change driving lever, secondary gear shift fork, secondary variable gear is formed, the shifter bar outer end is connected with gear change hand lever, the inner of secondary speed change pull bar is connected with secondary speed change driving lever, this pair speed change driving lever is stuck in the groove of secondary gear shift fork, secondary gear shift fork is sleeved on the secondary declutch shift shaft, the pusher dog of secondary gear shift fork is stuck in the groove of secondary variable gear, secondary variable gear and spragging gear and bearing together are installed on the secondary variable shaft, the outer end that it is characterized in that the speed change driving lever is thin bar, it is located immediately in the corresponding tubule of shifter bar the inner, the outer end of tubule outer wall and secondary speed change pull bar is connected, and the inner of secondary speed change pull bar still links to each other with secondary gear shift fork by secondary speed change driving lever.
Secondary original spragging gear in variable gear both sides of the utility model utilization and bearing are finished spacing to secondary variable gear, so saved the operation of milling long groove on the existing speed change driving lever, make production and processing easy, few with material, cost reduces, flexible and convenient to use, be difficult for breaking down, keep in repair also more convenient.
Fig. 1 is the structural representation of the secondary speed-changing mechanism of existing walker tractor;
Fig. 2 is a structural representation of the present utility model.
As Fig. 2, it still by speed change driving lever 1 ', shifter bar 2 ', secondary speed change pull bar 3 ', secondary speed change driving lever 4 ', secondary gear shift fork 5 ', secondary variable gear 6 ' form, characteristics of the present utility model are, speed change driving lever 1 ' the outer end be thin bar, it be located immediately at the corresponding tubule 8 of shifter bar 2 ' the inner ' in, tubule 8 ' outer wall and secondary speed change pull bar 3 ' the outer end be connected, secondary speed change pull bar 3 ' the inner still by secondary speed change driving lever 4 ' with secondary gear shift fork 5 ' link to each other.Other structure is identical with the secondary speed-changing mechanism of existing walker tractor, be shifter bar 2 ' outer end be connected with gear change hand lever 10 ', be convenient to M/C, secondary speed change pull bar 3 ' the inner be connected with secondary speed change driving lever 4 ', the secondary gear shift fork 5 of this pair speed change driving lever 4 ' be stuck in ' groove 11 ' in, the secondary declutch shift shaft 12 of secondary gear shift fork 5 ' be sleeved on ' on.Secondary gear shift fork 5 ' the secondary variable gear 6 of pusher dog 13 ' be stuck in ' groove 14 ' in, the secondary variable shaft 17 of secondary variable gear 6 ' and spragging gear 15 ' and bearing 16 ' together be installed in ' on.
The secondary variable gear 6 of the utility model utilization ' left and right be respectively equipped with fixed spragging gear 15 ' and bearing 16 ', they be installed in same secondary variable shaft 17 ' on, so secondary variable gear 6 ' left and right mobile ultimate range by spragging gear 15 ' and bearing 16 ' institute limit, do not need by speed change driving lever 1 ' on long groove spacing, so can save speed change driving lever 1 ' on mill long groove operation, make structure and produce simplification greatly, cost-cutting reduces fault.When grasping 2 ' time of gear change hand lever 10 ' push away, draw shifter bar, just make secondary speed change pull bar 3 ' work inwards, outside moving, it move through the secondary gear shift fork 5 of secondary speed change driving lever 4 ' drive secondary declutch shift shaft 12 ' on left and right slip, thereby make secondary gear shift fork 5 ' the secondary variable gear 6 of pusher dog 13 ' stir ' left and right moving, reach the purpose of secondary speed change.
Claims (1)
1, a kind of secondary speed-changing mechanism of walker tractor, it is still by the speed change driving lever, shifter bar, secondary speed change pull bar, secondary speed change driving lever, secondary gear shift fork, secondary variable gear is formed, the shifter bar outer end is connected with gear change hand lever, the inner of secondary speed change pull bar is connected with secondary speed change driving lever, this pair speed change driving lever is stuck in the groove of secondary gear shift fork, secondary gear shift fork is sleeved on the secondary declutch shift shaft, the pusher dog of secondary gear shift fork is stuck in the groove of secondary variable gear, secondary variable gear and spragging gear and bearing together are installed on the secondary variable shaft, the outer end that it is characterized in that the speed change driving lever is thin bar, it is located immediately in the corresponding tubule of shifter bar the inner, the outer end of tubule outer wall and secondary speed change pull bar is connected, and the inner of secondary speed change pull bar still links to each other with secondary gear shift fork by secondary speed change driving lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227016 CN2355921Y (en) | 1999-01-06 | 1999-01-06 | Supplementary gear-box for hand tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99227016 CN2355921Y (en) | 1999-01-06 | 1999-01-06 | Supplementary gear-box for hand tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2355921Y true CN2355921Y (en) | 1999-12-29 |
Family
ID=34016614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99227016 Expired - Fee Related CN2355921Y (en) | 1999-01-06 | 1999-01-06 | Supplementary gear-box for hand tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2355921Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910792A (en) * | 2018-07-20 | 2018-11-30 | 杭州继高电力技术有限公司 | Project of transmitting and converting electricity debugging and maintenance device |
-
1999
- 1999-01-06 CN CN 99227016 patent/CN2355921Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910792A (en) * | 2018-07-20 | 2018-11-30 | 杭州继高电力技术有限公司 | Project of transmitting and converting electricity debugging and maintenance device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |