CN203051738U - Internally-mounted gearshift mechanism of mini-cultivator - Google Patents
Internally-mounted gearshift mechanism of mini-cultivator Download PDFInfo
- Publication number
- CN203051738U CN203051738U CN 201220697229 CN201220697229U CN203051738U CN 203051738 U CN203051738 U CN 203051738U CN 201220697229 CN201220697229 CN 201220697229 CN 201220697229 U CN201220697229 U CN 201220697229U CN 203051738 U CN203051738 U CN 203051738U
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- Prior art keywords
- gearbox
- shift
- spring
- gear
- steel ball
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Abstract
The utility model belongs to the technical field of agricultural machinery and particularly relates, in particular to an internally-mounted gearshift mechanism of a mini-cultivator. The mechanism comprises a gearbox, a gearshift fork, a fork shaft, steel balls and springs, the fork shaft penetrates through the box wall of the gearbox, and one end, located inside the gearbox, of the fork shaft is connected with the gearshift fork. The internally-mounted gearshift mechanism of the mini-cultivator is characterized in that a plurality of assembly holes with the number in accordance with that of gears are formed in the gearshift fork, and the assembly holes and the fork shaft are concentric, the steel balls capable of being clamped into the assembly holes are arranged in the gearbox, the diameters of the steel balls are larger than the hole diameters of the assembly holes, and the steel balls are connected with the springs arranged on the gearbox. The internally-mounted gearshift mechanism of the mini-cultivator is more accurate in gear adjustment and more convenient to maintain.
Description
Technical field
The utility model belongs to the farm machinery technical field, relates in particular to the built-in gearshift mechanism of a kind of microtilling machine.
Background technique
At present, the built-in gearshift mechanism of tradition mostly is made up of reverse shift fork, declutch shift shaft, spring and steel ball, wherein reverse shift fork and declutch shift shaft connect into an integral body with bolt, spring and steel ball are contained in the microtilling machine gearbox and declutch shift shaft are played the role of positioning, during gear shift by about the pulling declutch shift shaft realize the microtilling machine transforming gear.
More specifically, the built-in gearshift mechanism of microtilling machine is by the steel ball in circular groove on the declutch shift shaft and the casing, spring cooperates realizes the gear location, and the relative position between the different circular grooves, groove width and groove depth will inevitably produce machining error in course of working, microtilling machine in use simultaneously, because frequent conversion gear can cause the width of circular groove to broaden gradually, long-time use can cause the different gears of microtilling machine location inaccurate, the while shift fork is discharged to a certain gear backgear and can has left back a little slip, in the process of arable land, the gear life of this situation running can obviously reduce corresponding working life of also reducing microtilling machine; Spring plays a part very crucial in built-in gearshift mechanism, and the spring frequency of utilization can produce actual effect after too high, need change spring and just can solve this moment, then need remove gear shift cover but will change spring, take out declutch shift shaft and just can realize, this is extremely inconvenient concerning the maintenance man.
To sum up, there is following drawback in the built-in gearshift mechanism of existing microtilling machine: 1. reverse shift fork is accurate inadequately to the gear shift location of gear, easily scurries shelves; 2. keep in repair loaded down with trivial detailsly, need take case lid apart and just can keep in repair.
The model utility content
The technical problems to be solved in the utility model provides a kind of gear adjustment built-in gearshift mechanism of microtilling machine accurate, easy to maintenance.
The utility model adopts following technological scheme:
The built-in gearshift mechanism of a kind of microtilling machine, comprise gearbox, reverse shift fork, declutch shift shaft, steel ball and spring, declutch shift shaft passes the tank wall of gearbox, the end that declutch shift shaft is positioned at gearbox inside connects reverse shift fork, reverse shift fork is provided with concentric with declutch shift shaft and consistent some pilot holes with gear quantity, gearbox is provided with the steel ball that can snap in pilot hole, and the diameter of steel ball is greater than the aperture of pilot hole, and described steel ball links to each other with spring on being arranged on gearbox.
Compared with prior art, advantage of the present utility model is: this gearshift mechanism since steel ball link to each other with spring on being arranged on gearbox, described spring is stage clip, steel ball there is all the time the effect of outside pressure, again since reverse shift fork be provided with concentric with declutch shift shaft and with gear quantity consistent pilot hole, so under the effect of spring outward pressure, after the gear shift, steel ball can snap in the pilot hole automatically, realizes the location to different gear positions.Further advantage of the present utility model is that diameter by making steel ball is greater than the aperture of pilot hole, thereby reach the requirement of location, steel ball zero clearance reverse shift fork, the position location is more accurate, is forbidden thereby solved traditional built-in gearshift mechanism location, be easy to scurry shelves, cause shortening the drawback of gear life.
Further, spring one end links to each other with steel ball, and the other end links to each other with interior hexagonal Cock screw on being arranged on gearbox, described in the hexagonal Cock screw stretch out described gearbox casing away from an end of spring.The purpose of hexagonal Cock screw is in arranging, when spring partial failure occurs and causes spring pressure to reduce, can outside gearbox casing, utilize the light instrument appropriateness tighten in the hexagonal Cock screw, holddown spring, the Regulation spring decrement is adjusted the degree of tightness of gear; Damage as if spring, hexagonal Cock screw in directly back-outing is changed spring and is got final product, and needn't take gear shift cover apart as traditional built-in gearshift mechanism, takes out declutch shift shaft and could change spring, makes maintenance convenient.
Further, described reverse shift fork comprises the sleeve of the level that vertical gear shift sheet is connected with gear shift sheet one end, the gear shift sheet the other end links to each other with declutch shift shaft, pilot hole is distributed on the gear shift sheet, sleeve cooperates with a shift fork piece sliding sleeve, and shift fork piece one end has the convex edge, and the convex edge is stuck between two gear shift duplex teeth, two coaxial being installed in the rotating shaft of gear shift duplex tooth, the two ends of rotating shaft are installed on the gearbox.Because the utility model is provided with the shift fork piece at reverse shift fork, the shift fork piece cooperates with the reverse shift fork sliding sleeve, and reverse shift fork drives the shift fork piece and regulates gear shift duplex tooth during gear shift, can avoid the excessive loss of reverse shift fork during transmission, reduce maintenance work, prolong the working life of reverse shift fork.
Description of drawings
Fig. 1 is the built-in gearshift mechanism embodiment's of the utility model structural representation;
Fig. 2 is the structural representation of declutch shift shaft among Fig. 1 embodiment, reverse shift fork and shift fork piece;
Fig. 3 is Fig. 1 embodiment's perspective view.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
As Fig. 1, Fig. 2, shown in Figure 3, the built-in gearshift mechanism of microtilling machine, comprise gearbox 1, reverse shift fork 2, declutch shift shaft 3, steel ball 4 and spring 5, declutch shift shaft 3 passes the tank wall of gearbox 1, reverse shift fork 2 is positioned at gearbox 1, described reverse shift fork 2 comprises the sleeve 22 of the level that vertical gear shift sheet 21 is connected with gear shift sheet 21 1 ends, gear shift sheet 21 the other ends link to each other with declutch shift shaft 3, be distributed with concentric with declutch shift shaft 3 on the gear shift sheet 21 and consistent some pilot holes 23 with gear quantity, sleeve 22 cooperates with a shift fork piece 6 sliding sleeves, shift fork piece 6 one ends have convex edge 61, convex edge 61 is stuck between two gear shift duplex teeth 7, two gear shift duplex tooth 7 coaxial being installed in the rotating shaft 8, the two ends of rotating shaft 8 are installed on the gearbox 1.
Gearbox 1 is provided with the steel ball 4 that can snap in pilot hole 23, the diameter of steel ball 4 is greater than the aperture of pilot hole 23, steel ball 4 links to each other with spring 5 one ends on being arranged on gearbox 1, spring 5 the other ends link to each other with interior hexagonal Cock screw 9 on being arranged on gearbox 1, and interior hexagonal Cock screw 9 stretches out gearbox casing 1 away from an end of spring 5.
This gearshift mechanism since steel ball link to each other with spring on being arranged on gearbox, here said spring is stage clip, steel ball there is all the time the effect of outside pressure, again owing to be provided with concentric with declutch shift shaft and the consistent pilot hole with gear quantity at reverse shift fork, therefore under the effect of spring outward pressure, after the gear shift, steel ball can snap in the pilot hole automatically, realizes the location to different gear positions.Further advantage of the present utility model is that diameter by making steel ball is greater than the aperture of pilot hole, thereby reach the requirement of location, steel ball zero clearance reverse shift fork, the position location is more accurate, is forbidden thereby solved traditional built-in gearshift mechanism location, be easy to scurry shelves, cause shortening the drawback of gear life.
Hexagonal Cock screw in arranging, when spring partial failure occurs and causes spring pressure to reduce, can outside gearbox casing, utilize the light instrument appropriateness tighten in the hexagonal Cock screw, holddown spring, the Regulation spring decrement is adjusted the degree of tightness of gear; Damage as if spring, hexagonal Cock screw in directly back-outing is changed spring and is got final product, and needn't take gear shift cover apart as traditional built-in gearshift mechanism, takes out declutch shift shaft and could change spring, makes maintenance convenient.
Claims (3)
1. built-in gearshift mechanism of microtilling machine, comprise gearbox, reverse shift fork, declutch shift shaft, steel ball and spring, declutch shift shaft passes the tank wall of gearbox, the end that declutch shift shaft is positioned at gearbox inside connects reverse shift fork, it is characterized in that, reverse shift fork be provided with concentric with declutch shift shaft and with gear quantity consistent some pilot holes, gearbox is provided with the steel ball that can snap in pilot hole, the diameter of steel ball is greater than the aperture of pilot hole, and described steel ball links to each other with spring on being arranged on gearbox.
2. the built-in gearshift mechanism of microtilling machine according to claim 1, it is characterized in that, spring one end links to each other with steel ball, and the other end links to each other with interior hexagonal Cock screw on being arranged on gearbox, described in the hexagonal Cock screw stretch out described gearbox casing away from an end of spring.
3. the built-in gearshift mechanism of microtilling machine according to claim 1, it is characterized in that, described reverse shift fork comprises the sleeve of the level that vertical gear shift sheet is connected with gear shift sheet one end, the gear shift sheet the other end links to each other with declutch shift shaft, and pilot hole is distributed on the gear shift sheet, and sleeve cooperates with a shift fork piece sliding sleeve, shift fork piece one end has the convex edge, the convex edge is stuck between two gear shift duplex teeth, two coaxial being installed in the rotating shaft of gear shift duplex tooth, and the two ends of rotating shaft are installed on the gearbox.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697229 CN203051738U (en) | 2012-12-17 | 2012-12-17 | Internally-mounted gearshift mechanism of mini-cultivator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697229 CN203051738U (en) | 2012-12-17 | 2012-12-17 | Internally-mounted gearshift mechanism of mini-cultivator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203051738U true CN203051738U (en) | 2013-07-10 |
Family
ID=48734692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220697229 Expired - Fee Related CN203051738U (en) | 2012-12-17 | 2012-12-17 | Internally-mounted gearshift mechanism of mini-cultivator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203051738U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697158A (en) * | 2013-12-24 | 2014-04-02 | 华国洋 | Stopper device for rotary cultivator |
| CN106499806A (en) * | 2016-12-26 | 2017-03-15 | 雷沃重工股份有限公司 | Used with tractor lock unit shift fork shifter |
-
2012
- 2012-12-17 CN CN 201220697229 patent/CN203051738U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697158A (en) * | 2013-12-24 | 2014-04-02 | 华国洋 | Stopper device for rotary cultivator |
| CN106499806A (en) * | 2016-12-26 | 2017-03-15 | 雷沃重工股份有限公司 | Used with tractor lock unit shift fork shifter |
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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: 20130710 Termination date: 20171217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |