CN201282620Y - Shifter of small tiller - Google Patents
Shifter of small tiller Download PDFInfo
- Publication number
- CN201282620Y CN201282620Y CNU2008201000174U CN200820100017U CN201282620Y CN 201282620 Y CN201282620 Y CN 201282620Y CN U2008201000174 U CNU2008201000174 U CN U2008201000174U CN 200820100017 U CN200820100017 U CN 200820100017U CN 201282620 Y CN201282620 Y CN 201282620Y
- Authority
- CN
- China
- Prior art keywords
- declutch shift
- pin
- shift shaft
- hole
- mini
- 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 a gear shifting mechanism of micro cultivator, which comprises a gear shifting arm, two shifting fork shafts, two shifting fork blocks, two limiting balls, and a guide seat with two guide holes, wherein the guide seat between the two guide holes is provided with a pinhole; the pin hole is vertical to the two guide holes and communicates the two guide holes; an anti-misoperation pin is mounted in the pinhole via clearance fit; the length of the anti-misoepration pin is equal to the sum of the distance between the cylindrical surfaces of the two shifting fork shafts and the depth of the annular slots on the shifting fork shafts. When shifts the gear of micro cultivator, the gear shifting mechanism can prevent the transmission mechanism of the micro cultivator from deadlock or damage caused by shifting the two gear shifting shafts together.
Description
Technical field
The utility model relates to the gearshift of the gearshift of dynamic power machine, particularly mini-size tillage machine.
Background technology
Gearshift on the mini-size tillage machine mainly is made up of gear arm, two declutch shift shafts, two shift fork pieces, two spacing balls and guide holder with two pilot holes, the interlude of declutch shift shaft partly is positioned at gear-box, be fixed with shift fork on it, the gear that shift fork is used in the handsetting gear case is shifted gears with realization.The shift fork piece is fixed on an end of declutch shift shaft, and itself and guide holder lay respectively at the gear-box both sides.The other end of declutch shift shaft is along circumferentially offering the twice cannelure at least, and this end is positioned at pilot hole and guide holder matched in clearance, offer the spacing ball installing hole vertical on the guide holder with pilot hole, spacing ball in it is arranged in the cannelure on the declutch shift shaft under spring action, do not move axially when shifting gears with the restriction declutch shift shaft.In two declutch shift shafts, the forward gear of a declutch shift shaft control mini-size tillage machine wherein, another root declutch shift shaft is controlled the retaining that retreats of mini-size tillage machine.When gear shift operation, by handling gear arm, stir the shift fork piece about making the gear arm front end in the shift fork piece, move along its axis thereby drive declutch shift shaft, make the gear in the shift fork handsetting gear case that is fixed on the declutch shift shaft then, realize the gearshift of mini-size tillage machine.
But because two shift fork pieces in the gearshift lean on nearerly on the mini-size tillage machine, gear arm is when stirring the shift fork piece, the gear arm front end is easily between two shift fork pieces, and simultaneously two shift fork pieces are stirred, promptly simultaneously two declutch shift shafts are stirred, thereby with the forward gear of this mini-size tillage machine with retreat retaining and hang up simultaneously, cause the transmission mechanism pintle hook lock of mini-size tillage machine dead or damage.
The utility model content
The purpose of this utility model provides a kind of gearshift of mini-size tillage machine, avoiding owing to simultaneously two declutch shift shafts are stirred, and causes the transmission mechanism pintle hook lock of mini-size tillage machine dead or damage.
The gearshift of mini-size tillage machine described in the utility model, comprise gear arm, two declutch shift shafts, two shift fork pieces, two spacing balls and have the guide holder of two pilot holes, the shift fork piece is fixed on an end of declutch shift shaft, the other end of declutch shift shaft is along circumferentially offering the twice cannelure at least, and this end is positioned at pilot hole and guide holder matched in clearance, offer the spacing ball installing hole vertical on the guide holder with pilot hole, spacing ball in it is arranged in the cannelure of declutch shift shaft under spring action, on the guide holder between two pilot holes, offer pin-and-hole, pin-and-hole is vertical with two pilot holes and it is communicated with, anti-error pin with its matched in clearance is installed in the pin-and-hole, and the length of anti-error pin equals cannelure degree of depth sum on two distances between the declutch shift shaft face of cylinder and the declutch shift shaft.
The termination shape of anti-error pin should guarantee its cannelure that can touch declutch shift shaft bottom.
When shifting gears, thereby the shift fork piece that the gear arm front end is stirred wherein moves along its axis declutch shift shaft, this moment, anti-error pin moved to another declutch shift shaft under this declutch shift shaft effect, and make bottom the cannelure of anti-error pin termination conflict on another declutch shift shaft, because the length of anti-error pin equals cannelure degree of depth sum on two distances between the declutch shift shaft face of cylinder and the declutch shift shaft, so anti-error pin can not hinder moving of this declutch shift shaft, thereby make the interior gear of shift fork handsetting gear case on the declutch shift shaft realize gear shift.
If the gear arm front end is stirred two shift fork pieces simultaneously, then two declutch shift shafts will move along its axis simultaneously, because the length of anti-error pin is greater than two distances between the declutch shift shaft face of cylinder, so two declutch shift shafts will be blocked and can not move along its axis by anti-error lock, thereby avoided the forward gear of mini-size tillage machine and retreated retaining hanging up simultaneously, and caused the transmission mechanism pintle hook lock of mini-size tillage machine dead or damage.
The gearshift of mini-size tillage machine described in the utility model is owing to be provided with an anti-error pin in guide holder, it moves when can stop two declutch shift shafts, thereby avoided the forward gear of mini-size tillage machine and retreated retaining hanging up simultaneously, and the dead or damage of the transmission mechanism pintle hook lock that causes mini-size tillage machine has guaranteed the safe operation of mini-size tillage machine.
Description of drawings
Now in conjunction with the accompanying drawings the utility model is described in further detail.
Fig. 1 is the structural representation of looking down shown mini-size tillage machine gearshift in the side of mini-size tillage machine above the mini-size tillage machine; Among the figure A0, A1, A2 represent respectively to fall back neutral, fall back one the retaining, two retainings fall back; B0, B1, B2 represent respectively to advance neutral, advance one the retaining, two retainings advance;
Fig. 2 is that A among Fig. 1 is to view.
Embodiment
As shown in Figure 1 and Figure 2, the gearshift of this mini-size tillage machine comprises gear arm 12, two declutch shift shafts 11, two shift fork pieces 13, two spacing balls 1 and has the guide holder 4 of two pilot holes 3, two shift fork pieces 13 are separately fixed at an end of two declutch shift shafts 11, the other end of declutch shift shaft 11 is along circumferentially offering three road cannelures 6, three road cannelures 6 are evenly arranged along declutch shift shaft 11 axis, and declutch shift shaft 11 these ends are positioned at pilot hole 3 and guide holder 4 matched in clearance.Offer the spacing ball installing hole 9 vertical with pilot hole 3 on the guide holder 4, the spacing ball 1 in it is arranged in the cannelure 6 of declutch shift shaft 11 under spring 5 effects, move axially when not shifting gears with restriction declutch shift shaft 11.On the guide holder between two pilot holes 34, offer pin-and-hole 8, pin-and-hole 8 and two pilot holes 3 are vertical and it is communicated with, the dead in line of its axis and spacing ball installing hole 9, anti-error pin 2 with its matched in clearance is installed in the pin-and-hole 8, and the length of anti-error pin 2 equals cannelure 6 degree of depth sums on two distances between declutch shift shaft 11 faces of cylinder and the declutch shift shaft 11.
State shown in Figure 1 is the neutral state, when needs fall back a retaining, the shift fork piece 13 of declutch shift shaft 11 ends that control is reversed gear is stirred to the right, the spacing ball 1 and the anti-error pin 2 that are arranged in these declutch shift shaft 11 cannelures 6 will move to the direction away from this declutch shift shaft 11, thereby this declutch shift shaft 11 is moved right, shift fork 10 on the declutch shift shaft 11 is the gear (not shown) in the handsetting gear case 7 just, when following one cannelure 6 on the declutch shift shaft 11 moves to spacing ball installing hole 9 positions, spacing ball 1 will be conflicted under spring 5 effect and declutch shift shaft 11 be carried out in this cannelure 6 spacingly, change to the operation of the retaining that falls back thereby finish from neutral.
Fall back two the retaining and advance one, two the retaining operations the same with aforesaid operations.
If gear arm 12 front ends are stirred two shift fork pieces 13 simultaneously, then two declutch shift shafts 11 will move along its axis simultaneously, because the length of anti-error pin 2 is greater than two distances between declutch shift shaft 11 faces of cylinder, so two declutch shift shafts 11 will be lived and can not move along its axis by anti-error pin 2 pintle hook locks, the operator must operate again.
Claims (3)
1, the gearshift of mini-size tillage machine, comprise gear arm (12), two declutch shift shafts (11), two shift fork pieces (13), two spacing balls (1) and have the guide holder (4) of two pilot holes (3), the shift fork piece is fixed on an end of declutch shift shaft, the other end of declutch shift shaft is along circumferentially offering twice cannelure (6) at least, and this end is positioned at pilot hole and guide holder matched in clearance, offer the spacing ball installing hole vertical on the guide holder with pilot hole, spacing ball in it is arranged in the cannelure of declutch shift shaft under spring (5) effect, it is characterized in that: on the guide holder between two pilot holes, offer pin-and-hole (8), pin-and-hole is vertical with two pilot holes and it is communicated with, anti-error pin (2) with its matched in clearance is installed in the pin-and-hole, and the length of anti-error pin equals cannelure degree of depth sum on two distances between the declutch shift shaft face of cylinder and the declutch shift shaft.
2, the gearshift of mini-size tillage machine according to claim 1 is characterized in that: described pin-and-hole (8) axis and spacing ball installing hole (9) dead in line.
3, the gearshift of mini-size tillage machine according to claim 1 and 2 is characterized in that: two declutch shift shafts (11) all offer three road cannelures (6), and three road cannelures are evenly arranged along the declutch shift shaft axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201000174U CN201282620Y (en) | 2008-09-19 | 2008-09-19 | Shifter of small tiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201000174U CN201282620Y (en) | 2008-09-19 | 2008-09-19 | Shifter of small tiller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282620Y true CN201282620Y (en) | 2009-08-05 |
Family
ID=40947606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201000174U Expired - Fee Related CN201282620Y (en) | 2008-09-19 | 2008-09-19 | Shifter of small tiller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282620Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839331A (en) * | 2010-05-28 | 2010-09-22 | 江苏常发实业集团有限公司 | Automatic centering mechanism for gear change levers of tractors |
| CN103343812A (en) * | 2013-07-25 | 2013-10-09 | 郑州机械研究所 | Interlocking gearbox gear shifting mechanism suitable for being used on vehicle-mounted petroleum drilling machine |
-
2008
- 2008-09-19 CN CNU2008201000174U patent/CN201282620Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839331A (en) * | 2010-05-28 | 2010-09-22 | 江苏常发实业集团有限公司 | Automatic centering mechanism for gear change levers of tractors |
| CN103343812A (en) * | 2013-07-25 | 2013-10-09 | 郑州机械研究所 | Interlocking gearbox gear shifting mechanism suitable for being used on vehicle-mounted petroleum drilling machine |
| CN103343812B (en) * | 2013-07-25 | 2015-06-03 | 郑州机械研究所 | Interlocking gearbox gear shifting mechanism suitable for being used on vehicle-mounted petroleum drilling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090805 Termination date: 20140919 |
|
| EXPY | Termination of patent right or utility model |