CN2119537U

CN2119537U - Safety oil diaphragm speed-regulating clutch

Info

Publication number: CN2119537U
Application number: CN 91206118
Authority: CN
Inventors: 李成涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-11
Filing date: 1991-04-11
Publication date: 1992-10-21

Abstract

The utility model discloses a safety speed-regulating clutch, which is suitable for occasions which require torque limit protection and speed regulation. A press disk (2) in the torque limit mechanism of the clutch is positioned on the inside wall of the shaft disk (1) of a driving shaft, a disk spring (3) is positioned in a hollow cavity between the press disk (2) and a piston (6), the inside wall of the piston (6) is provided with an inner piston (8), the driving shaft is provided with a regulating bolt (5), the press disk is carried out axially regulating the pretightening force of the disk spring by a screw, and the pretightening force of the disk spring is the size of the torque limit. When regulating speed, oil is controlled to enter the hollow cavity between the piston and the inner piston, when a controlling system and a pressure passage way system have faults, the utility model can be still continuously operated under the condition of not regulating speed, and because control-oil pressure required is lower than the prior art when regulating speed, saving energy.

Description

Safety oil diaphragm speed-regulating clutch

The utility model relates to a kind of variable-speed clutch, is applicable to the occasion that requires protection of limit square and speed governing.

Normally used oil film type variable-speed clutch is that principle designs by the internal friction that oil film viscosity is produced, it is 2047737U that Chinese patent communique 5 volumes once disclosed a kind of notification number No. 46, name is called the patent of " oil film type variable-speed clutch ", because this patent is to lean on the internal friction of working oil between friction plate to make transferring power between friction plate, and the impacting force regulating and controlling friction plate gap by piston, thereby realize control transferring power and rotating speed, the piston impacting force is the pressure control by control oil, so, when electric control system or pressure pipeline system break down, pilot pressure disappears, friction plate just can not transmitting torque and is quit work, this is unallowed in some occasion, as the blower fan in colliery etc.

It is a kind of when electric control system or pressure pipeline system are malfunctioning that the purpose of this utility model is to provide, still the safety type oil film speed-regulating clutch that can work under the torque-limiting situation.

The utility model is to realize like this, clutch is the internal friction transferring power that produces by the working oil oil film between friction plate, the size of internal friction is regulated by the impacting force of piston, the impacting force of piston is reached by the pretightening force that is positioned at platen and piston cavity dish spring, and dish spring pretightening force compresses platen and realizes by being contained in adjusting bolt on the driving shaft, the size of pretightening force just defines the size that can transmit peak torque, during speed governing, control oil enters between piston and inner carrier in the chamber, offset the part pretightening force, make the piston different impacting force of acquisition and realize speed governing, and when controlling the oily pressure that produces greater than pretightening force, just separate between friction plate that driven axle is stopped operating, thereby realize the stepless speed regulation of driven axle 0-100% motor speed.When electric control system or pressure pipeline system were malfunctioning, control-oil pressure was zero, and friction plate is still worked under the effect of pretightening force, only wouldn't speed governing.

In conjunction with the accompanying drawings the utility model is elaborated below by embodiment:

Accompanying drawing is the structural drawing of the utility model clutch body.

The utility model is by driving shaft, driven axle (12), active friction plate (15), form from movable friction plate (11), limit square mechanism.Limit square mechanism is by platen (2) in the clutch body, dish spring (3), piston (6) and inner carrier (8) are formed, platen (2) is positioned at driving shaft reel (1) madial wall, dish spring (3) is positioned at the cavity between platen (2) and piston (6), the madial wall of piston (6) is equipped with inner carrier (8), inner carrier (8) is locked on the driving shaft with lock washer (9) and round nut (10), piston (6) and inner carrier (8) all have O RunddichtringO (4) sealing, be equipped with on the driving shaft reel (1) and regulate bolt (5) and push down platen (2), by spiral platen (2) is carried out axial adjustment, port lid on the casing (7) can be opened during adjusting, regulate the quantity of bolt and neglect the size of adjusting pressure greatly and decide, but quantity is no less than three, platen (2) is when moving axially to the right, compressing dish spring (3) and drive piston (6) thus press to friction plate transfer the peak torque that allows.The quantity of dish spring generally is no less than two.

During work, prime mover drives the driving shaft rotation, by pin and bolt, cylindrical shell (14) is gone up involute splines and is driven active friction plate (15), going up involute splines from movable friction plate (11) by involute splines and driven axle (12) is connected, and drive driven axle (12) revolution, clutch transmits power is to lean on the internal friction of working oil between friction plate to produce, control system pressure oil is entered in the chamber between piston (6) and the inner carrier (8) by oil duct (13) during speed governing, the controlled amount system piston of pressure oil pressure P K is pressed to the size of friction pole sheet pressure, when control-oil pressure during greater than dish spring pretightening force, piston (6) and main, from movable friction plate (15), (11) separate driven axle (12) stall; When control-oil pressure during less than pretightening force, can carry out stepless speed regulation, thereby realize the stepless speed regulation of driven axle 0-100% motor speed, when control-oil pressure is zero, still can pass through dish spring pretightening force transmitting torque, only wouldn't the energy speed governing.

The rotating speed of the utility model driven axle is owing to be to regulate by the pressure of oil in the chamber between limit square mechanism and piston and inner carrier is common, so, during work, if control system or pressure pipeline system break down, still can continuous running under the situation of not speed governing, can be used for being strict with the occasion of continuous operation, the pressure that need control oil during owing to speed governing is low than prior art, so energy saving.

Claims

1, a kind of safety type oil film speed-regulating clutch, by driving shaft, driven axle (12), active friction plate (15), from movable friction plate (11), limit square mechanism forms, internal friction transferring power by working oil between active friction plate and driven friction, it is characterized in that the interior platen (2) of clutch body is positioned at the madial wall of driving shaft reel (1), dish spring (3) is positioned at the cavity between platen (2) and piston (6), the madial wall of piston (6) is equipped with inner carrier (8), inner carrier (8) is locked on the driving shaft with lock washer (9) and round nut (10), O RunddichtringO (4) sealing is all arranged on piston (6) and the inner carrier (8), be equipped with on the driving shaft reel (1) and regulate bolt (5) and push down platen (2), the adjusting bolt is oppressed platen (2) by spiral and is carried out axial adjustment.

2, safety type variable-speed clutch according to claim 1 is characterized in that the quantity of regulating bolt should be no less than three.