CN201138950Y

CN201138950Y - Gear box mechanism with engaging and disengaging gear in self-walking lawn mower

Info

Publication number: CN201138950Y
Application number: CNU2007201300244U
Authority: CN
Inventors: 郑旭忠
Original assignee: YANGZHOU WEIBANG GARDEN MACHINERY PLANT
Current assignee: YANGZHOU WEIBANG GARDEN MACHINERY PLANT; Yangzhou Weibang Garden Machine Co Ltd
Priority date: 2007-12-28
Filing date: 2007-12-28
Publication date: 2008-10-29
Anticipated expiration: 2017-12-28

Abstract

The utility model relates to a gear-box mechanism with a clutch device in a self-propelled type lawn mower, which belongs to the technical filed of the mowing machinery. The gear-box mechanism is characterized in that a head face cam pair composed of a static head face cam and a moving head face cam is nested on the output shaft of a movement buffering component in an box body and adjacent to a rotating axle, the pusher dog of a shifting fork fixed and connected with the rotating axle is positioned in the groove of the moving head face cam, the moving head face cam in a shifting fork shifting end surface cam pair connected with a curved rotating axle is axially moved, and thereby the on-off of the conical surface clutch can be pushed. The gear-box mechanism of the utility model has the advantages that the reliability of the clutch is improved, the requirement of the self-propelled type lawn mower in the internal commercial use is met, the running is stable, the on-off is reliable, the gear-box mechanism is durable, the performance-price ratio is high, the gear-box mechanism can replace the gear-box in the prior lawn mower, and the gear-box mechanism has good economic and social benefits.

Description

Band arrangement of clutch transmission mechanisms in walking hay mower

Technical field

The utility model relates to a kind of from walking band arrangement of clutch transmission mechanisms in the hay mower, belongs to the mowing field of mechanical technique.

Background technology

Because the needs of beautifying the environment, the lawn coverage rate improves day by day, and corresponding lawn maintenance workload is doubled and redoubled, and the middle high gear hay mower that has automatic walking function is used more and more widely.

The gearbox of the self-moving lawn mower of Shi Yonging is mainly by import in the market.Self-moving lawn mower is mainly family expenses abroad, and generally is used for commercial large tracts of land operation at home.The supporting gearbox of import lawn machine is the live load of not competent hard intensity often; And but special import bussiness class gearbox makes cost too high because price is high.

Domestic hay mower commonly used import back axle adopts the turbine inner conical surface clutch of turbine and worm deceleration and cooperation lever pushing usually at present.Facts have proved that the possibility clutch in use of this structure is unclear, continue transmission when causing rear wheel drive axle neutral position, machine can not in time stop to move, and reliability and durability can not guarantee.

Summary of the invention

The purpose of this utility model is because of its structural factor at existing import family expenses gear-box for lawn-mower, the live load of not competent hard intensity, and the high deficiency of bussiness class gearbox price, in order to satisfy from walking the hay mower requirement of commercial use at home, provide clutch reliable, durable in use, a kind of the walking certainly that cost performance is high is with the arrangement of clutch transmission mechanisms in the hay mower.

The purpose of this utility model is achieved through the following technical solutions, band arrangement of clutch transmission mechanisms in walking hay mower, comprise casing, the output shaft that runs through sliding bearing on the tank wall of casing both sides, the thrust piece that is nested with successively on the output shaft in the casing, the reaction catch, spacer, the motion Buffer Unit, the second clutch cone by the pin connection, the first clutch cone, be nested with in the second clutch cone, the turbine that the first clutch cone is outer, the motion Buffer Unit, with the turbine engaged worm, pass the rotating shaft of casing, one end of the outer torque arm of casing connects reset tension spring, the other end of torque arm connects rotating shaft, rotating shaft is gone in the casing from casing is overhanging, it is characterized in that in the casing being nested with the edge cam pair of being made up of quiet edge cam and moved end face cam on the output shaft near the motion Buffer Unit outer end of rotating shaft place, the pusher dog that rotating shaft connects solid shift fork places in the groove of moved end face cam.

The quiet edge cam of edge cam pair is the flank of tooth that matches with the corresponding surface of moved end face cam.

The quiet edge cam periphery of edge cam pair has and the corresponding quadrangle of corresponding site cabinets cavity.

The moved end face cam moves axially the utility model in the shift fork struck side face cam pair that is connected with crooked rotating shaft by being provided with, thereby promote the clutch of conical surface clutch body, the utility model has improved the reliability of clutch, satisfy from walking the hay mower requirement of commercial use at home, running is steady, and clutch is reliable, durable in use, the cost performance height can substitute the gearbox in the existing hay mower, has good economic benefits and social benefit.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 connects solid shift fork structural representation for the utility model shaft with it;

Fig. 3 connects solid shift fork plan structure schematic diagram for the utility model shaft with it;

Fig. 4 is the moved end face cam master TV structure schematic diagram in the edge cam pair in the utility model;

Fig. 5 is the moved end face cam side-looking structural representation in the edge cam pair in the utility model;

Fig. 6 is the quiet edge cam master TV structure schematic diagram in the edge cam pair in the utility model;

Fig. 7 is the quiet edge cam side-looking structural representation in the edge cam pair in the utility model;

Among the figure, 1 output shaft, 2 rotating shafts, 3 shift forks, 4 quiet edge cams, 5 moved end face cams, 6 pins, 7 turbines, 8 drag rings, 9 bearing body assemblies, 10 drag rings, 11 cones, 12 worm screws, 13 spacers, 14 reaction catch, 15 thrust pieces, 16 casings.

Embodiment

Further specify the utility model in conjunction with the accompanying drawings and embodiments, as shown in Figure 1, the utility model comprises casing 16, the output shaft 1 that runs through sliding bearing on the casing 16 both sides tank walls, the thrust piece 15 that is nested with successively on the output shaft 1 in the casing 16, reaction catch 14, spacer 13, comprise drag ring 8, bearing body assembly 9, the Buffer Unit of drag ring motion 10, two clutch cones 11 by pin 6 connections, be nested with the turbine 7 outside two clutch cones, comprise drag ring 8, bearing body assembly 9, the Buffer Unit of drag ring motion 10, with turbine 7 engaged worm 12, pass the rotating shaft 2 of casing 16, one end of casing 16 outer torque arm connects reset tension spring, the other end of torque arm connects rotating shaft 2, rotating shaft 2 is gone in the casing 16 from casing 16 is overhanging, is nested with the edge cam pair of being made up of quiet edge cam 4 and moved end face cam 5 on the output shaft 1 near the motion Buffer Unit outer end at rotating shaft 2 places in the casing 16, and the pusher dog of the shift fork 3 that rotating shaft 2 companies are solid places in the groove of moved end face cam 5.

Driving body is formed such as turbine 7 is meshed such as a worm screw 12 and an execution body in the utility model, by a clutch such as conical clutch, cone 11 is connected by pin 6 with output shaft 1 and can endwisely slips, therefore and the rotation of axle 1 have the interdependency of motion, and with above-mentioned turbine 7 coaxial placements.By an executing agency, as the action such as shift fork 3, this cone can be approached at an easy rate and is meshed with above-mentioned turbine conical bore, and the thrust piece 15 of output shaft 1 interacts on shift fork 3 and the casing, thus closed above-mentioned two cones.When the torque arm on the gearbox when the reset tension spring return, make rotating shaft 2 revolutions through shift fork 3, shift fork 3 makes moved end face cam 5 backward rotation, removes axial compressive force, makes worm gear 7 and antithesis cone 11 become unsteadyly by compressing, and can not transmit moment of torsion.Its characteristics of this structure are, successively insert the motion Buffer Unit of output shaft 1 between two cones 11 and thrust piece 15, and by moving axially and relative output shaft 1 self centering moved end face cam 5, buffer body radially is fixed on the axle 1 that keeps rotating.

Between thrust piece 15 and shift fork 3, in a sequential manner, a moved end face cam 5 is arranged, one comprises drag ring 8, bearing body assembly 9, the motion Buffer Unit of drag ring motion 10, the first clutch cone 11, turbine 7, the second clutch cone 11 comprises drag ring 8, bearing body assembly 9, motion Buffer Unit, spacer 13 and a reaction catch 14 of drag ring motion 10.

The motion Buffer Unit comprises a bearing body assembly 9 at least, such as a needle roller thrust bearing, is used for axial location, and correspondence acts on the raceway, such as

drag ring

8,10, co-axially fixed

drag ring

8 and 10 is separately positioned on moved end face cam 5, between spacer 13 and the bearing body 9.

The motion buffer body with respect to the radial location method of axle (quiet edge cam) 4 is, carries the buffer body assembly with the end face cannelure of a depression, and above-mentioned drag ring 10 is placed in the cannelure of moved end face cam 5 and spacer 13, and limited.

Shown in Fig. 4,5,6,7, moved end face cam 5 is somes of circumference one way engagement kinematic pair, the groove that shift fork 3 usefulness are arranged above, be used for accepting the control of shift fork 3 pusher dogs and produce around axle 1 rotation, simultaneously, another relative in kinematic pair fixing quiet edge cam semi-finals is compeled down, and generation moves axially, and moves thereby promote cone.

Shown in Fig. 2,3, shift fork 3 parts on gear motion pair next door are made of following: shift fork 3 inserts in the face of cone 11, one ends in the groove of moved end face cam 5, and an other end is connected and fixed with the rotating shaft 2 of walking around axle 1.

Make by composite with the spacer 13 of output shaft 1 automatic centering.

Spacer 13 is with respect to output shaft centering, and output shaft 1 remains on the tank wall of casing 16 by the sliding bearing of composite.

The motion Buffer Unit is radial alignment on the one hand, can freely keep dynamically contacting with output shaft on the other hand, does the self adaptation adjustment with the front end face of corresponding spacer 13 and the back side of edge cam 5 simultaneously.

Two edge cams of circumference one way engagement kinematic pair can convert following form to, i.e. the cancellation of groove on the moved end face cam 5 also can only move axially, and original fixing quiet edge cam 4 increases shift fork step and rotatable.

Worm gear is a helical gear, and when worm gear 7 and a pair of compression taper 11 clutches, because the compression taper relative fixed of right-hand member, after the compression taper axial compressive force of left end discharged, worm gear 7 can produce axial displacements, so the worm gear profile of tooth is the helical gear form.

Claims

1, band arrangement of clutch transmission mechanisms in walking hay mower, comprise casing, the output shaft that runs through sliding bearing on the tank wall of casing both sides, the thrust piece that is nested with successively on the output shaft in the casing, the reaction catch, spacer, the motion Buffer Unit, the second clutch cone by the pin connection, the first clutch cone, be nested with in the second clutch cone, the turbine that the first clutch cone is outer, the motion Buffer Unit, with the turbine engaged worm, pass the rotating shaft of casing, one end of the outer torque arm of casing connects reset tension spring, the other end of torque arm connects rotating shaft, rotating shaft is gone in the casing from casing is overhanging, it is characterized in that in the casing being nested with the edge cam pair of being made up of quiet edge cam and moved end face cam on the output shaft near the motion Buffer Unit outer end of torque arm place, the pusher dog that rotating shaft connects solid shift fork places in the groove of moved end face cam.

2, according to claim 1 from walking band arrangement of clutch transmission mechanisms in the hay mower, it is characterized in that the quiet edge cam of edge cam pair is the flank of tooth that matches with the corresponding surface of moved end face cam.

3, according to claim 1 and 2 from walking band arrangement of clutch transmission mechanisms in the hay mower, it is characterized in that the quiet edge cam periphery of edge cam pair has and the corresponding quadrangle of corresponding site cabinets cavity.