CN2194433Y

CN2194433Y - Centrifugal clutch

Info

Publication number: CN2194433Y
Application number: CN 94224961
Authority: CN
Inventors: 杨志凌
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-10
Filing date: 1994-08-10
Publication date: 1995-04-12
Anticipated expiration: 2004-08-10

Abstract

The utility model relates to a centrifugal clutch which is composed of a main shaft, a driving disc, a belt pulley, a bearing, an on-off block, etc. A deep groove on the middle of the on-off block is embedded on the outer diameter of the driving disc as the clearance fit. The on-off block and the outer diameter of the driving disc are connected by a positioning pin. The on-off block can burn the positioning pin to do arc-swing motion. The driving disc is a structure with a thin type, high intensity, three holes and six rods. The clutch has the advantages of light weight, a few components, high mechanical strength and low cost, and is especially suitable for minitype reciprocating compressors.

Description

Centrifugal clutch

The utility model relates to a kind of automatic clutch, and specifically a kind of novel centrifugal type clutch is applicable to manual cranking, is various motor vehicle, boats and ships, pneumatic mining machinery and other machinery of power with diesel oil, is particularly useful for small-sized air compressor.

The automatic clutch that generally uses has multiple at present.They exist some irrational places in design, particularly Zheng Ti weight is too heavy, driving shaft fracture often appears in the use, bolt pulls sliding tooth, the driving machine consumed power is big, the transmitted power instability, maintenance is inconvenient, uses uneasy congruence, and these deficiencys must reasonably be solved.

The purpose of this utility model is to provide that a kind of simple in structure, overall weight is light, connection and reasonable arrangement, cost centrifugal clutch low, easy to maintenance.

A kind of novel centrifugal type clutch, comprise main shaft, driving disc, belt pulley, bearing, clutch block, be characterized in the middle of the clutch block deep trouth being arranged, become Spielpassung to be embedded on the driving disc external diameter, one location pin-and-hole is all arranged on clutch block and the driving disc external diameter, locating stud is packed in this hole, makes clutch block to do the arc swing around locating stud.One end of control strip is contained in the groove of driving disc, and the other end of control strip is packed in the control pin-and-hole on the clutch block, and the control pin inserts in the control pin-and-hole, and control strip is fixed.

The utility model is a kind of single strong point, the centrifugal centrifugal clutch that can do the arc swing.This clutch is in light weight, the safety coefficient height, and used component are few, the mechanical strength height, cost is low.The weight of former clutch is 21Kg, has now reduced to 16Kg.The thickness of former driving disc is 35mm, has now reduced to 7mm.This clutch is at used small-sized piston formula air compressor (the air displacement 2.0m of pneumatic industry ³/ min, working pressure is 0.5MP) on generally adopt, effect is very remarkable.Through type approval test, every index has all surpassed domestic like product.

The utility model has following accompanying drawing:

The plan view of Fig. 1 novel centrifugal type clutch;

The side view of Fig. 2 novel centrifugal type clutch;

The utility model will be further described below in conjunction with drawings and Examples.

As shown in Figure 1, the utility model is by driving shaft 1, and after 11 rotations of drive driving disc, the centrifugal force of generation moves clutch block 5 and contacts with garden wall frictions in the belt pulley 4, and belt pulley 4 and driving shaft 1 are rotated synchronously.Driving shaft 1 be with three Bolt Connection on the driving machine flywheel, make its synchronous rotation.Driving disc 11 is contained on the driving shaft 1, is connected by flat key 17 itself and driving shaft 1 are rotated synchronously.A shield bearing 2 is housed in the aperture of belt pulley 4, and it cooperates with driving shaft 1 rotates belt pulley 4 on driving shaft.The hole is contained between driving disc 11 and the bearing 2 with back-up ring 3, control bearing 2 and belt pulley 4 axial floats.A shield bearing 18 is housed in the aperture of end face capping 12, and the step internal diameter of its external diameter and belt pulley 4 becomes transition fit.The bearing axial floats are controlled with back-up ring 15, shaft block ring 16 in the hole.Three uniform screws 14 are fastening with the belt pulley screw, and it is become one, and increase belt pulley intensity and stability.Three uniform hex screws of shaft seal cover 13 usefulness are fastened in the end face capping 12, play dustproof effect.

One deep trouth is arranged in the middle of the clutch block 5, become Spielpassung to be embedded on the external diameter of driving disc 11, be drilled with a positioning hole on the clutch block, positioning hole on this hole and driving disc 11 external diameters is measure-alike, in order to assembling and positioning pin 21, locating stud and positioning hole are slidingly connected, and shaft block ring 20 prevents that locating stud 21 from deviating from, and clutch block 5 can be swung around locating stud 21 usefulness arcs.Locating stud 21 had both played the role of positioning, and played support, power transmission and connection again.When driving disc rotated, because of action of centrifugal force, clutch block 5 can only be axle with the locating stud, did the arc swing, and the rubbing surface of clutch block 5 is contacted with surface, garden in the belt pulley, transmitted rotary power.

Control pin 9 and control strip 8 are main structures that control clutch block 5 (centrifugal force less than the control strip elastic strain time) when low speed rotation can not contact with surface, garden in the belt pulley.Article three, control strip 8 is installed in respectively in the little press for extracting juice groove of three elongated hole two sides of driving disc, clutch block load onto back control strip 8 just in time with clutch block 5 on the control pin-and-hole intersect, slightly exceed about the 0.75-1mm of aperture, insert control pin 9 and make control strip and control lock the resiliently deformable size of pasting and 0.75-1mm being arranged, clutch block can not be swung to the external application arc when low speed.This moment, clutch block did not contact with belt pulley, made the idle running of driving disc and clutch block.Cotter pin 10 is contained in the aperture of control pin termination, and anti-shotpin is deviate from.Cushion pad 22 is embedded in the driving disc external diameter square groove, and interior its effect is to reduce noise and vibration.Among Fig. 1,6 is friction plate, and 7 is screw, and 19 is lining.

Driving disc 11 is a kind of thin type high strength three holes six muscle structures.The main effect in three holes is needs of weight reduction and assembly technology.Six roots of sensation stiffening rib 23 is equipped with in the driving disc bi-side, mainly is the mechanical strength that improves driving disc, and it can not twisted when bearing bigger load.

The mechanical strength of Moving plate can not twisted it when bearing bigger load.

When the starting handle driving machine, because rotating speed is lower, the centrifugal force of generation is little, and clutch block can not make the control strip distortion, make its can not with garden rubbing contact in the belt pulley, driving machine no-load running, thus it is light to reach starting handle.

After driving machine starts, improve rotating speed, the corresponding thereupon raising of centrifugal force.When centrifugal force is worth greater than the elastic deformation coefficient of control strip, clutch block just and in the belt pulley garden wall friction contact, rotating speed is high more, centrifugal force is just big more, friction factor is also with regard to corresponding increase, transmitted power consumption is just more little, thereby plays the effect of efficient transfer power.

Claims

1, a kind of novel centrifugal type clutch, comprise main shaft (1), driving disc (11), belt pulley (4), bearing (2,18) clutch block (5), it is characterized in that in the middle of the clutch block (5) deep trouth being arranged, become Spielpassung to be embedded on driving disc (11) external diameter, one location pin-and-hole is all arranged on clutch block and the driving disc external diameter, locating stud (21) is packed in this hole, make clutch block (5) to do the arc swing around locating stud (21), one end of control strip (8) is in the groove of driving disc, the other end of control strip (8) is packed in the control pin-and-hole on the clutch block, control pin (9) inserts in the control pin-and-hole, and control strip is fixed.

2, clutch as claimed in claim 1 is characterized in that driving disc (11) is contained on the main shaft (1), is connected by flat key (17), makes the rotation synchronously of itself and driving shaft (1).

3, clutch as claimed in claim 2 is characterized in that in the aperture of belt pulley (4) shield bearing (2) being housed, and the hole is contained between driving disc (11) and the bearing (2) with back-up ring (3); End capping (12) is equipped with shield bearing (18) in the aperture, and its external diameter becomes transition fit with the step internal diameter of belt pulley (4).

4, clutch as claimed in claim 3 is characterized in that driving disc (11) is a kind of thin type high strength three holes six muscle structures, and six roots of sensation stiffening rib (23) is contained in the bi-side of driving disc.