CN201162792Y

CN201162792Y - Centrifugal type clutch for agricultural equipment

Info

Publication number: CN201162792Y
Application number: CNU2008200330317U
Authority: CN
Inventors: 李小春; 钟世启; 申彦彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-03-19
Filing date: 2008-03-19
Publication date: 2008-12-10
Anticipated expiration: 2018-03-19

Abstract

The utility model relates to a centrifugal clutch for farm machinery, and comprises a shell, a shoe block which is arranged in the shell, a friction plate and a spring. The opposite surface of the shoe block and the inner sidewall of the shell is provided with the friction plate; 2 to 5 shoe blocks are evenly arranged in a circle; two adjacent shoe blocks are connected through the spring; the periphery of the clutch shaft is fixedly connected with a driving shaft; the driving shaft with uniform teeth on the outer edge is arranged in the shell; the teeth of the driving shaft are arranged in the guiding groove of each shoe block; one side of the shell is provided with an integrative belt pulley; the two sides of the show block are provided with two side plates with the outside diameter less than the outside diameter of the shoe block; the two side plates are connected with the driving shaft through a pin shaft; gaps are arranged between the inner sides of the side plates and the two sides of the shoe block. The centrifugal clutch has the characteristics of compact structure, reliable torque transmission and large torque transmission.

Description

The centrifugal clutch of supporting agricultural machinery and implement

Technical field

The utility model relates to a kind of centrifugal clutch of supporting agricultural machinery and implement, belongs to the Clutch Technology field.

Background technique

The clutch of supporting agricultural machinery generally adopts friction-disc-clutch, friction-disc-clutch mainly is made up of two groups of friction plates, outer sleeve, inner sleeve and operating devices etc., one group of outside friction disc is connected with the outer sleeve spline, friction plate then is connected with female muff spline in another group, outward, inner sleeve is separately fixed on driving shaft and the driven shaft, when operating mechanism compresses outside friction disc, outer, interior two groups of friction plates are engaged and outputting power, when two groups of friction plates unclamp and cut off power.The clutch of this structure in the joint or cut-out of power, must be equipped with operating mechanism, and complex structure is operated loaded down with trivial details.In addition, also because of clutch in frequent joint and release process, therefore two groups of friction plates can wear and tear, and need the distance between frequent adjustment (adjusting) lever and the outside friction disc, could keep good working order.Some clutches that are used on the agricultural machinery and implement adopt shoe-type automatic clutch at present for this reason, mainly constitute by driving disc, hoof piece, bearing pin, spring and land etc., driving disc is connected with pto by internal spline, one end of hoof piece is positioned on the driving disc with bearing pin, the outside of case is connected with land by rivet, be provided with internal spline in the journal hole of land, internal spline by land is connected with driven shaft, and the hoof piece contacts transferring power or disconnection automatically by the centrifugal force size with encloser inner wall.This structure is because an end of hoof piece is hinged on the driving disc by bearing pin, and therefore, the hoof piece of rotation is under centrifugal action, and the friction plate on the hoof piece can not contact with encloser inner wall simultaneously fully, and has reduced transmitting torque.In addition,, be difficult for guaranteeing the coaxality of case and land, also can influence transmission efficiency because case adopts riveted joint to be connected with land.

Summary of the invention

The purpose of this utility model provides the centrifugal clutch of a kind of compact structure, the reliable supporting agricultural machinery and implement of transmitting torque.

The utility model is that the technological scheme that achieves the above object is: a kind of centrifugal clutch of supporting agricultural machinery and implement, comprise case, be positioned at hoof piece, friction plate and the spring of case, the opposing side of hoof piece and case madial wall has friction plate, 2～5 hoof pieces are evenly distributed along Zhou Fangxiang, be connected with spring between the adjacent two hoof pieces, it is characterized in that: the periphery of described clutch shaft is fixedly connected with driving shaft, the even driving shaft that is furnished with profile of tooth of outer rim is positioned at case, each profile of tooth of driving shaft is arranged in the guiding groove of each hoof piece, the belt pulley that case one side has one; Hoof piece both sides are provided with two side plates of external diameter less than hoof piece external diameter, and two side plates are connected on the driving shaft by bearing pin, and have the gap between the bi-side of the inner side surface of side plate and hoof piece.

Centrifugal clutch of the present utility model, each profile of tooth of its driving shaft outer rim respectively with the hoof piece on guiding groove match, compact structure, rationally, therefore in the process of clutch shaft drive driving shaft rotation, the hoof piece also rotates with driving shaft, the hoof piece moves under action of centrifugal force, can not only lead by the profile of tooth on the driving shaft, also by biside plate the hoof piece is carried out axial limiting simultaneously, the hoof piece can not depart from its movement locus, and the friction plate on the hoof piece can be contacted with encloser inner wall simultaneously, keep friction plate and encloser inner wall on the hoof piece that bigger area of contact is arranged, so transmitting torque is big, and transmitting torque is reliable, transmission of power is comparatively smooth-going.The utility model by with the belt pulley transmitting torque of case one, easily guaranteeing the coaxality of clutch shaft and case can not influence transmission efficiency.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is Fig. 1 side-looking structural representation.

Fig. 3 is the A-A sectional structure schematic representation of Fig. 1.

Wherein: 1-friction plate, 2-hoof piece, 2-1-guiding groove, 3-bearing pin, 4-driving shaft, 4-1-profile of tooth, 5-clutch shaft, the 5-1-location shaft shoulder, 6-side plate, 7-spring, 8-case, 8-1-belt pulley.

Embodiment

See shown in Fig. 1～3, the centrifugal clutch of the supporting agricultural machinery and implement of the utility model comprises case 8, be positioned at the hoof piece 2 of case 8, friction plate 1, spring 7, clutch shaft 5 and driving shaft 4, hoof piece 2 has friction plate 1 with the opposing side of case 8 madial walls, 2～5 fan-shaped hoof piece 2 circumferencial directions are evenly distributed, see shown in 2, be uniform three hoof pieces 2, be connected with spring 7 between the adjacent two hoof pieces 2, be fixedly connected with driving shaft 4 on the periphery wall of clutch shaft 5, driving shaft 4 crimping are fixed on the clutch shaft 5, or be weldingly fixed on the clutch shaft 5, has keyway in the clutch shaft 5, be connected by the output shaft of key with petrol engine or diesel powered equipment, the outer rim of driving shaft 4 has uniform profile of tooth 4-1, and its profile of tooth number is identical with the quantity of hoof piece 2, each profile of tooth 4-1 of driving shaft 4 is arranged in the guiding groove 2-1 of each hoof piece 2, profile of tooth 4-1 on this driving shaft 4 can be the arc tooth, the guiding groove 2-1 of hoof piece 2 also is the corresponding curve bath that matches, driving shaft 4 is positioned at case 8, case 8 one sides have the belt pulley 8-1 of one, the length of clutch shaft 5 makes the structure of clutch compact more more than or equal to the length of case 8.See shown in Fig. 1,3, the utility model is provided with two side plates 6 in hoof piece 2 both sides, side plate 6 external diameters are less than hoof piece 2 external diameters, two side plates 6 are connected on the driving shaft 4 by bearing pin 3, see shown in Figure 1ly, and the both sides of driving shaft 4 and hoof piece 2 are equipped with groove surface, side plate 6 is arranged in this groove surface, make hoof piece 2 peripheries have big attachment face, have the gap between the bi-side of the inner side surface of side plate 6 and hoof piece 2, side plate 6 does not influence moving of hoof piece 2.For ease of to driving shaft 4 axially locating, clutch shaft 5 is provided with location shaft shoulder 5-1, joins near the side plate 6 of the belt pulley 8-1 one side side with location shaft shoulder 5-1.

When the power of dynamic power machine reaches clutch shaft 5 and driving shaft 4, hoof piece 2 is with driving shaft 4 rotations, along with improving constantly of rotating speed, under action of centrifugal force, the pulling force that hoof piece 2 overcomes spring 7 outwards gets rid of, and friction plate 1 is contacted simultaneously with case 8 madial walls, under the effect of frictional force, hoof piece 2 drives case 8 and rotates together, and the driving belt on the belt pulley 8-1 that is installed in case 8 one sides is rotated, and outputs power on the working shaft of agricultural machinery and implement.

Claims

1, a kind of centrifugal clutch of supporting agricultural machinery and implement, comprise case (8), be positioned at the hoof piece (2) of case (8), friction plate (1) and spring (7), hoof piece (2) has friction plate (1) with the opposing side of case (8) madial wall, 2～5 hoof pieces (2) are evenly distributed along Zhou Fangxiang, be connected with spring (7) between the adjacent two hoof pieces (2), it is characterized in that: the periphery of described clutch shaft (5) is fixedly connected with driving shaft (4), the even driving shaft (4) that is furnished with profile of tooth (4-1) of outer rim is positioned at case (8), each profile of tooth (4-1) of driving shaft (4) is arranged in the guiding groove (2-1) of each hoof piece (2), and case (8) one sides have the belt pulley (8-1) of one; Hoof piece (2) both sides are provided with two side plates (6) of external diameter less than hoof piece (2) external diameter, and two side plates (6) are connected on the driving shaft (4) by bearing pin (3), and have the gap between the bi-side of the inner side surface of side plate (6) and hoof piece (2).

2, the centrifugal clutch of supporting agricultural machinery and implement according to claim 1 is characterized in that: the length of described clutch shaft (5) is more than or equal to the length of case (8).

3, the centrifugal clutch of supporting agricultural machinery and implement according to claim 1 is characterized in that: the profile of tooth (4-1) on the described driving shaft (4) is the arc tooth, and the guiding groove (2-1) of hoof piece (2) also is the corresponding curve bath that matches.

4, the centrifugal clutch of supporting agricultural machinery and implement according to claim 1 is characterized in that: described driving shaft (4) crimping is fixed on the clutch shaft (5).

5, the centrifugal clutch of supporting agricultural machinery and implement according to claim 1 is characterized in that: described clutch shaft (5) is provided with the location shaft shoulder (5-1), joins near the side plate (6) of belt pulley (8-1) side and the side of the location shaft shoulder (5-1).

6, the centrifugal clutch of supporting agricultural machinery and implement according to claim 1 is characterized in that: the both sides of described driving shaft (4) and hoof piece (2) are equipped with groove surface, and side plate (6) is arranged in this groove surface.