CN102687609A

CN102687609A - Grass raker with clutch mechanism

Info

Publication number: CN102687609A
Application number: CN201210159848XA
Authority: CN
Inventors: 张进
Original assignee: Zhejiang YAT Electrical Appliance Co Ltd
Current assignee: Zhejiang YAT Electrical Appliance Co Ltd
Priority date: 2012-05-21
Filing date: 2012-05-21
Publication date: 2012-09-26

Abstract

The invention discloses a grass raker with a clutch mechanism. The grass raker with the clutch mechanism comprises a pulley shaft. A large pulley is rotatably connected to the pulley shaft. A clutch is fixedly connected to the pulley shaft on the left side of the large pulley. A spring is arranged on the pulley shaft on the left side of the clutch. Maximal protective control torque between the clutch and the pulley shaft is controlled through the spring. When a transmission system bears load larger exceeding bearing capacity of the transmission system during actal operation of the grass raker, a driving part and a driven part of the clutch move relatively to prevent damage of internal structural parts. Therefore, maximal torque borne by the transmission system is controlled, the service life of the grass raker is prolonged effectively, operation of the grass raker is more stable and reliable, and transmission performance is better.

Description

A kind of grass rake mechine with clutch

Technical field

The present invention relates to the inner driving protection parts of a kind of garden instrument, relate in particular to the driving protection parts of grass rake mechine or loosenning tiller.

Background technology

Talk clutch; Everybody can expect the arrangement of clutch on the automobile at once, but in the garden instrument industry, does not adopt as yet, especially at grass rake mechine and above the loosenning tiller; Thereby grass rake mechine and loosenning tiller run into certain torsion in actual mechanical process after, drive disk assembly damages easily.

Summary of the invention

Technical problem to be solved by this invention just provides a kind of grass rake mechine with clutch, prolongs the service life of machine effectively, makes the operation of equipment more reliable and more stable, and transmission performance is more superior.

For solving the problems of the technologies described above; The present invention adopts following technical scheme: a kind of grass rake mechine with clutch; Comprise belt shaft, it is characterized in that: the big belt wheel that is rotationally connected on the said belt shaft, said belt shaft is fixedly connected a clutch in big belt wheel left side; Said belt shaft is provided with a spring in the clutch left side, and said spring is controlled the maximum protection control torsion between big clutch and belt shaft.

As preferably, said belt shaft left end is supported on the clutch shaft bearing, and said belt shaft is provided with back-up ring between clutch shaft bearing and spring.

As preferably, said belt shaft right-hand member is supported on second bearing, and the belt shaft right-hand member is provided with fixing second bearing of nut, is provided with pad between the nut and second bearing.

As preferably, adopt splined between said clutch and belt shaft.

As preferably, said spring is a volute spring, and the spring stub end is socketed on the clutch.

As preferably; Said clutch comprises a dish type body; The Pan Kou edge of ring dish type body evenly is provided with at least two draw-in grooves, and said big belt wheel is provided with groove towards clutch one gusset strip winding axle hole, the belt passing round axle hole convex tendon corresponding with said draw-in groove that radially distribute in the said groove; Under the spring force effect, said convex tendon and said draw-in groove snap fit.

The present invention is in actual mechanical process, and transmission system is when the load that runs into above its bearing capacity, and between clutch active part and follower, the relative motion of generation damages to prevent inner structure part.Thereby controlled the Max. torque that power train is born, prolonged the service life of machine effectively, made the operation of equipment more reliable and more stable, transmission performance is more superior.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

Fig. 1 is the present invention's structural representation that explodes;

Fig. 2 assembles the back structural representation for the present invention.

Embodiment

Specify the embodiment of the invention with reference to figure 1 and Fig. 2, clutch is made up of belt shaft 1, clutch shaft bearing 2, back-up ring 3, spring 4, clutch 5, big belt wheel 6, second bearing 7, pad 8, nut 9.Belt shaft 1 left end is supported on the clutch shaft bearing 2, and the belt shaft right-hand member is supported on second bearing 7, and it is in order to ensure concentricity and support location that the clutch shaft bearing 2 and second bearing 7 are assemblied on the belt shaft 1; It is that back-up ring works the guide function that puts in place simultaneously for spring 4 does not injure clutch shaft bearing 2 when working that back-up ring 3 is assemblied in spring 4 front ends, and it is for fixing second bearing that the belt shaft right-hand member is provided with nut 9, between the nut and second bearing, is provided with pad 8.Clutch 5 and belt shaft 1 are taked the mode of splined, and when torsion surpassed spring force, clutch 5 just produced relative motion with belt shaft 1, thereby clutch 5 produces clutch actions equally with big belt wheel 6, play the effect of protection transmission system parts.

Said clutch 5 comprises a dish type body; The Pan Kou edge of ring dish type body evenly is provided with at least two draw-in grooves; Said big belt wheel is provided with groove 51 towards clutch one gusset strip winding axle hole; The belt passing round axle hole convex tendon corresponding 61 that radially distribute in the said groove with said draw-in groove, under the spring force effect, said convex tendon 61 and said draw-in groove snap fit.

Said spring is a volute spring, and the spring stub end is socketed on the clutch.Clutch dish type body left end is provided with bulge loop, and the spring stub end is socketed on the bulge loop and end face apical grafting bulge loop bottom surface.

The acrotorque that can bear according to other associated components, thus the maximum protection of setpoint clutch spring control torsion is implemented protection through relative motion between active part and the follower.The maximum protection control torsion of clutch spring is set according to bearing 60% of damage capability less than synchronous toothed maximum.

When big belt wheel unexpected generation stall in actual mechanical process, this moment, motor still moved, and the transmission through being with will be delivered to power on the clutch like this, through the effect generation clutch protection of spring.

Claims

1. grass rake mechine with clutch; Comprise belt shaft (1); It is characterized in that: a big belt wheel (6) is rotationally connected on the said belt shaft; Said belt shaft is fixedly connected a clutch (5) in big belt wheel left side, and said belt shaft is provided with a spring (4) in the clutch left side, and said spring is controlled the maximum protection control torsion between big clutch and belt shaft.

2. a kind of grass rake mechine with clutch according to claim 1 is characterized in that: said belt shaft left end is supported on the clutch shaft bearing (2), and said belt shaft is provided with back-up ring (3) between clutch shaft bearing and spring.

3. a kind of grass rake mechine with clutch according to claim 2 is characterized in that: said belt shaft right-hand member is supported on second bearing (7), and the belt shaft right-hand member is provided with fixing second bearing of nut (9), is provided with pad (8) between the nut and second bearing.

4. a kind of grass rake mechine with clutch according to claim 3 is characterized in that: adopt splined between said clutch and belt shaft.

5. a kind of grass rake mechine with clutch according to claim 4 is characterized in that: said spring is a volute spring, and the spring stub end is socketed on the clutch.

6. a kind of grass rake mechine according to claim 5 with clutch; It is characterized in that: said clutch comprises a dish type body; The Pan Kou edge of ring dish type body evenly is provided with at least two draw-in grooves (51), and said big belt wheel is provided with groove towards clutch one gusset strip winding axle hole, the belt passing round axle hole convex tendon corresponding with said draw-in groove (61) that radially distribute in the said groove; Under the spring force effect, said convex tendon and said draw-in groove snap fit.