CN2044300U

CN2044300U - Two-way liquid controlled friction clutch

Info

Publication number: CN2044300U
Application number: CN 88200597
Authority: CN
Inventors: 刘忠一
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-01-26
Filing date: 1988-01-26
Publication date: 1989-09-13

Abstract

The utility model discloses a two-way liquid controlled wet type friction clutch, specially appropriate for the engineering machinery equipment which adopts the liquid pressure shifting and reversing. The utility model has the advantages of simple structure and high reliability and is characterized in that a force application sliding bush which pushes and presses the press plate of a clutch friction sheet and the press plate of the friction sheet work in a conical surface. The two-way liquid controlled wet type friction clutch can apply a friction sheet not needing large acting force and make the housing of the clutch run to output motive power, which can resolve the problems that the common wet type friction clutch is easy to generate high heat and damage the thrust bearing or make the temperature of the lubrication oil too high and the lubrication oil failed under the condition of the heavy load with long term.

Description

Two-way liquid controlled friction clutch

The utility model relates to a kind of two-way hydraulic control wet friction clutch that uses on the engineering mechanical device of hydraulic pressure gearshift, commutation that is particularly suitable for adopting.

Being seen two-way hydraulic control wet friction clutch generally is to adopt following three kinds of forms at present:

First kind, partly combine with hydraulic jack, force application mechanism and clutch etc.The combination of clutch friction plate or disengagement are promoted these a whole set of force application mechanisms such as rocking arm, declutch shift shaft, shift fork application of force cover, thrust-bearing, pressing plate and realize by hydraulic jack.Except that pressing plate and clutch together rotated, remaining parts all can not be rotated.For this reason, at the middle thrust-bearing that is provided with of the application of force cover that can not rotate and the pressing plate of rotation, its effect is that the axial force that oil cylinder provides is put the pressing plate that passes to high speed rotating from the non-rotary application of force, is delivered on the friction plate again.Under the effect of high speed rotary motion and bigger axial force, very easily make thrust-bearing produce high heat like this, thereby cause the very high and thrust-bearing of the oily temperature of clutch to damage;

The structural type of second kind of two-way hydraulic control wet friction clutch be oil cylinder directly and clutch link, its piston directly promotes thrust-bearing, promotes pressing plate pressing friction sheet by the moving-coil of thrust-bearing.Oil cylinder is fixed on the certain position, and it works to clutch by thrust-bearing, and does not rotate with clutch, so the same disadvantage of a kind of structural type before existing equally;

The third structural type is that oil cylinder and clutch are integrated, and oil cylinder can rotate with clutch, and the piston of oil cylinder promptly is the platen of pressing friction sheet.Though this structural type is simple, but the pressure oil of oil cylinder must be by injecting in the deep hole set on clutch shaft or the clutch outer member, in can making the beidirectional clutch, that must be provided with plural turnover oilhole.Processing of its turnover oilhole is difficulty very, and in a lot of occasions, does not allow to be provided with turnover oilhole pipe joint on the shaft end of clutch and the shell, this conveniently its application area be restricted.In addition, owing to will on its running shaft, carry out the pressure oil sealing, can cause defective such as sealing difficulty and long-term operational safety difference in the high speed operation.

The purpose of this utility model be to provide a kind of simple and reasonable for structure, can adapt to high speed rotating and in addition parts be difficult for heating and damage the reliable two-way hydraulic control wet friction clutch of applied widely, usability.

For achieving the above object, the utility model is that hydraulic jack is fixed on the clutch casing equally.The driving lever of its piston rod and shift fork is hinged to drive shift fork.Shift fork is being clamped down on an application of force sliding sleeve, and this application of force sliding sleeve is contained in the middle part of two friction clutch mandrels, two each ends at mandrel of friction clutch group body.Key just is that the two ends of this application of force sliding sleeve endoporus all are bell mouth shape double tapered or many taperings, application of force sliding sleeve is the pillow block location, location with friction clutch mandrel middle part, on the same circumference of this location pillow block, along axial direction, Deng three to six straight troughs in sunder, adorning the roller wheel bearing frame in the groove, every group of bearing support all is to be that the articulating point hinge is contained in same garden that positioning shaft closes on week with its middle part, shape is as scratching plate, a roller is respectively being adorned at the bearing support two ends, roller just is positioned at the outer taper hole place of application of force sliding sleeve two-port, when application of force sliding sleeve mediates, that is to say when clutch is in off working state, roller also is pressed over respectively on the back frustum inclined-plane of two friction clutch friction plate pressing plates simultaneously, no matter hydraulic jack drives shift fork and pushes application of force sliding sleeve in the both sides arbitrary limit, the taper hole of application of force sliding sleeve all can thrust roller be pressed the frustum face behind this friction clutch friction plate pressing plate on one side that pushes away, thereby forces clutch moving plate and stator here to fit and start working.Because the friction plate pressing plate of application of force sliding sleeve and clutch all is with conical surface work, like this, required axial force major part has resolved into radial force during the work of former clutch, and that is to say only needs just can make the friction plate applying and worked with little any active force.This works under the heavy duty situation for a long time and easily to produce the too high and defective that lost efficacy of high cause thermal damage and clutch lubrication oil temperature with regard to having solved the friction clutch thrust-bearing; Simultaneously, as long as hydraulic jack does not have pressure release, the degree of reliability of usability of the present utility model just can guarantee fully.

Come enumeration implementation detail of the present utility model below by accompanying drawing.

Fig. 1 is the general structure diagrammatic sketch;

Fig. 2 is a shift fork assembly structure diagrammatic sketch.

The both sides of mandrel of the present utility model (1) respectively are installed with a plate friction height symmetrically and close device.After external power passes to mandrel (1), be contained in clutch support plate (4), retaining snap ring (3), moving plate (5), spline housing (7), bearing support (12) and the roller (10) on the mandrel (1) and the spring (8), friction plate pressing plate (9), (19) that are enclosed within on the mandrel (1) all can together rotate.Application of force sliding sleeve this moment (11) is gone up the frictional force action of location pillow block (A) and roller (10) because of being subjected to mandrel (1), and rotation also can accompany.Application of force sliding sleeve (11) is when mediating, the friction plate pressing plate (9) of left and right two clutches, (19) and moving plate (5), stator (6) are in the no Frotteurism of disengaging, and clutch housing (2) and (13) just can not rotated.

The endoporus two ends of application of force sliding sleeve (11) are the awl mouth of bell mouth shape double tapered or many taperings, and outer imperial palace is little, gradually transition.Front end is big tapering, be to push away friction plate pressing plate (9) or (19) as long as mobile short position just can allow roller press as soon as possible for making application of force sliding sleeve (11), the little tapered section at interior rear portion is the working position, its effect is to go up with little axial force at application of force sliding sleeve (11) just can impose certain pushing force by conical surface way roller (10) and friction plate pressing plate (9) or (19), thereby makes the moving plate (5) of clutch and stator (6) applying to reach job requirement.One section is straight hole in the middle of the application of force sliding sleeve (11), is beneficial to the location.For alleviating application of force sliding sleeve (11), roller (10) and friction plate pressing plate (9), (19) bump between and the noise of generation, application of force sliding sleeve (11) is when mediating, the roller (10) at itself and two ends, roller (10) and friction plate pressing plate (9), (19) back frustum inclined-plane is being in contact with one another, need which side clutch work, just application of force sliding sleeve (11) is pushed away these friction plate pressing plate (9) or (19) to clutch to that side's passing with pressure moving plate and stator applying are got final product.For example to allow the clutch work of left end, that just makes pressure oil enter the right chamber of hydraulic jack (14) by the hydraulic oil control switch, so that piston rod (15) is to left translation, thereby drive shift fork (17) application of force sliding sleeve (11) is pushed the roller (10) that bearing support (12) is gone up the left side left, roller (10) is just pressed the back frustum inclined-plane of the friction plate pressing plate (9) that pushes away left side clutch, make friction plate pressing plate (9) in spring (8) compression, the moving plate (5) and the stator (6) of clutch are compressed applying, thereby the housing (2) of clutch and mandrel (1) are combined into one, together rotate with outputting power.

As withdrawing from working state by this clutch, just earlier with hydraulic jack (14) right chamber release, the stage clip of its right-hand member (16) just pushes away piston rod (15) multiple to the neutral position, piston rod (15) also drives shift fork (17) application of force sliding sleeve (11) is dialled on former neutral position, this has just eliminated the pushing force to friction plate pressing plate (9), compressed spring (8) also will back into original position with friction plate pressing plate (9) with elastic force, also and then throw off between moving plate (5) and the stator (6) and separate just stop motion of housing (2).

Allow the clutch work of right-hand member, principle too.

The utility model also can partly be adapted as hydraulic control mechanism the form of mechanical handling when needed, becomes the two-way wet friction clutch of machinery control.

Claims

1, a kind ofly be particularly suitable for adopting hydraulic shift, the two-way hydraulic control wet friction height that uses on the engineering mechanical device of commutation closes device, it is by hydraulic jack (14), shift fork (17), application of force sliding sleeve (14) and two friction clutches and friction plate pressing plate (9), (19) form, hydraulic jack (14) is fixed on the clutch casing (20), piston rod (15) is that the driving lever (18) of shift fork (17) is hinged, shift fork (17) is being clamped down on application of force sliding sleeve (11), it is characterized in that middle part two friction clutch assemblies that application of force sliding sleeve (11) is loaded on mandrel (1) are respectively charged into the two ends of mandrel (1), application of force sliding sleeve (11) is with mandrel (1) middle part location pillow block (A) location, on the same circumference of location pillow block (A), direct-axis line direction five equilibrium is offered three to six straight troughs, hinge is being adorned bearing support (12) in the groove, the middle part of bearing support (12) is an articulating point, roller (10) is respectively being adorned at bearing support (12) two ends, during off working state, application of force sliding sleeve (11) is in the neutral position of mandrel (1), roller (10) is posted by application of force sliding sleeve (11) endoporus two-port, and is pressed over friction plate pressing plate (9) simultaneously, (19) on the back frustum inclined-plane.

2, two-way hydraulic control wet friction clutch according to claim 1, the two ends that it is characterized in that application of force sliding sleeve (11) endoporus are many taperings of bell mouth shape taper hole, the intermediate portion is a straight hole, during off working state, roller (10) is posted by the outer cone-shaped wall of application of force sliding sleeve (11) two-port.