CN2301570Y

CN2301570Y - Clutch

Info

Publication number: CN2301570Y
Application number: CN 97238485
Authority: CN
Inventors: 孔德认
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-07-03
Filing date: 1997-07-03
Publication date: 1998-12-23
Anticipated expiration: 2007-07-03

Abstract

The utility model relates to a clutch for vehicle, mainly comprising an oil pump, a control valve which is arranged in an oil path, a safety valve, an energy storage device which is arranged at a high-voltage cavity end and the engine of an oil quantity compensation device which is arranged at a low-voltage cavity end. A main shaft and the outer shell of the oil pump of the clutch move together, and the shaft of the oil pump is a driven shaft. The clutch provided by the utility model is suitable for all kinds of master-slave rotation speed difference, the heat rejection is quick, and the clutch has no any abrasion piece. The clutch only needs replace liquid pressure oil termly. The clutch can keep the performance not descend, and the maintenance cost is low. The clutch overcomes the defects of the existing engagement clutch and the friction clutch.

Description

Clutch

The utility model relates to for motor vehicle clutch.

The kind of clutch is a lot, but comes branch also to have only two big classes with regard to its combination, and a class is engagement type; One class is a friction type.Former structure is simple, the energy transmitting large torque, and boundary dimension is little, no wear-out part, but rigid engagement has impact when engaging, can only lead, and the output speed difference is less than using under 100 rev/mins the condition.And the latter and the former pluses and minuses are just the opposite.Clutch in use because the heat that produces is difficult to distribute in the sliding friction, temperature raises very soon when frequent use clutch, at high temperature the friction factor of friction plate and wear resistance all descend, and have shortened working life.Behind the friction disc wear, must the adjusting play, renewal of facing renewal more also during maintenance, so maintenance expenses height.Friction clutcch is that frictionally comes transferring power, and therefore not only needing to have the higher material of friction factor makes friction plate, but also enough big impacting force will be arranged, and enough big friction plate diameter.This must cause boundary dimension and steering force all bigger.

The purpose of this utility model provides a kind of structure and the diverse clutch of working principle, to overcome the shortcoming that two class clutches exist in the prior art.

The technical solution of the utility model is as follows: the height that the utility model provides closes in the device, mainly comprises a volumetric oil pump, and the shell of oil pump interlock mutually is provided with control valve in the oil circuit of oil pump in engine spindle and the clutch; The axle of oil pump is a driven shaft; Also be provided with energy-storing device in the oil circuit of clutch, be provided with the oil mass compensator at the low-pressure cavity end at the hyperbaric chamber end; Also be provided with safety valve between hyperbaric chamber and the low-pressure cavity.

When control valve was connected, the oil in the clutch in the oil pump flowed along oil circuit is smooth and easy under the effect of engine spindle power, and at this moment the axle of oil pump does not rotate with engine spindle; When control valve was closed, oil can not flow, and made that the transmission device in the oil pump is obstructed and can not rotates, and became as a whole with oil pump, and at this moment the power of engine spindle drives the driven shaft rotation.

When impulsive load occurring, oil pump hyperbaric chamber pressure rises suddenly, air bag in the accumulator absorbs this part energy by compression, and flow into certain oil mass, because clutch inconvenience is provided with fuel tank, so be this part oil mass to be mended in the oil circuit by the oil mass compensator of low-pressure cavity end is interior at one time, make low-pressure cavity remain certain pressure, prevent negative pressure.When impacting end, all restore again.

When automobile utilizes engine braking or utilizes automobile from slipping ato unit, driven shaft becomes driving shaft, driving shaft becomes driven shaft, hyperbaric chamber in the oil pump becomes low-pressure cavity, low-pressure cavity becomes hyperbaric chamber, and accumulator becomes the oil mass compensator, and the oil mass compensator becomes accumulator, the clutch action principle is identical, and just the transferring power direction is opposite.

When engine overload, oil pressure surpasses certain value, and safety valve is opened automatically, makes the oil in the hyperbaric chamber flow directly to low-pressure cavity, realizes " slip " protection.

Oil pump has various types, and as gear oil pump, plunger oil pump etc. except that centrifugal pump, all are fit to technique scheme.

Describe structure of the present utility model in detail below in conjunction with embodiment, working procedure and beneficial effect.

Oil pump among the utility model embodiment is a planetary gear oil pump.

Fig. 1 is a working principle schematic representation of the present utility model;

Fig. 2 is the utility model embodiment's a sectional view;

Fig. 3 be among Fig. 2 A-A to sectional view.

As Fig. 2, shown in 3, in the clutch that the utility model embodiment provides, use planetary gear oil pump 23.The planetary pinion architecture comprises 2, one sun gears 4 of three planetary pinions and the ring gear 1 that meshes with planetary pinion 2.By protecgulum 18, the shell that bonnet 5 and outer ring 12 are formed is fastenedly connected with bolt 19, and is linked to each other by the main shaft of flange bolt 16 with motor 25, and three keys and ring gear 1 engagement are arranged on the outer ring 12.The axle of oil pump 23 is a driven shaft 7, an end inside of inserting oil pump at driven shaft 7 is provided with the control valve of being made up of valve rod 6 and spool 14 24, is with spring 13 on the valve rod 6, when spring 13 does not compress, the hole 15 on driven shaft 7 is opened in spool 14 sealings, makes not UNICOM of hyperbaric chamber 20 and low-pressure cavity 21.Use spline fitted between driven shaft 7 and the sun gear 4.Respectively be provided with a platen 8 in the front and back of gear structure, be provided with spacing block 10 in the space between each gear.At platen 8, spacing block 10 all is provided with groove and hole on protecgulum 18 and the bonnet 5, and the cavity in spool 14 and driven shaft 7 has been formed oil circuit.In the oil circuit, also be provided with accumulator 22, be provided with oil mass compensator 9 at low-pressure cavity 21 ends at hyperbaric chamber 20 ends.Because planet pin is not subjected to radial force and torsion, only play the role of positioning, therefore can make tubulose, in be provided with safety valve 17.Driven shaft 7 also is a tubulose, in be provided with control valve 24.Because the warp-wise of each gear makes a concerted effort to be all zero, so driven shaft 7 can not be provided with bearing, but by three planetary pinion 2 self-alignments.Rear end at safety valve 17 also is provided with pump nozzle 3; In clutch device, the end portion of oil circuit is provided with oil drain plug 11.

Combination principle figure Fig. 1, the working procedure of present embodiment is as follows: when pressure spring 13, before being vehicle launch, when making spool 14 not seal the hole 15 of opening on driven shaft 7, when rotating, the main shaft of motor 25 drives outer ring 12, outer ring 12 drives ring gear 1 by three keys on it and rotates synchronously, also just drives planetary pinion 2 and rotates, and comprises revolution and rotation.Because oil circuit is unobstructed, so planetary pinion 2 can successfully rotate, sun gear 4 does not rotate simultaneously, and just driven shaft 7 does not rotate.When trip spring 13, when being vehicle start, spool 14 will slowly seal out the hole 15 on driven shaft 7, make between hyperbaric chamber 20 and the low-pressure cavity 21 by " lead to " progressively carrying out the transition to " obstructed ", at this moment, stoped the rotation of planetary pinion 2 because the oil in the oil circuit can not flow, planetary pinion 2 and sun gear 4 become one like this, rotate under the drive of ring gear 1, thereby the driven shaft that is connected on the sun gear 47 is rotated, motor 25 just drives driven shaft 7 and rotates synchronously like this.

From above narration as can be seen, the clutch configuration that the utility model provides is comparatively simple, because oil circuit and control valve are designed in the agent structure of oil pump, thereby volume is little, boundary dimension can adapt with existing vehicle.Shell is fixed on the driving shaft, is to consider that rotary inertia on the driving shaft will be far longer than the rotary inertia on the driven shaft, and requires its shell to have good dynamic balance.Control valve close and turn-on flow rate change to be gradually, make the speed discrepancy of driving shaft and driven shaft from large to small up to synchronously, so the vehicle start process is smooth-going and stable.In three planet pins, be respectively equipped with the safety valve of three different cracking pressures, therefore off-load is that segmentation is carried out, loading when resuming work also is that segmentation is carried out step by step, can reduce the torque ripple amplitude greatly, makes overload change overall process and operates steadily reliably.The more important thing is that the novel clutch that the utility model provides all is suitable for various principal and subordinate's speed discrepancies, rapid heat dissipation, no wear-out part only needs regularly to get final product from oil drain plug 11 and pump nozzle 3 replacing hydraulic oil, can not only keep its performance not descend, and maintenance expenses is low.

Claims

1. clutch comprises an oil pump (23), and the shell that it is characterized in that oil pump (23) in motor (25) main shaft and the clutch is interlock mutually, is provided with control valve (24) in the oil circuit of oil pump; The axle of oil pump is driven shaft (7); Also be provided with energy-storing device (22) in the oil circuit of clutch, be provided with oil mass compensator (9) at low-pressure cavity (21) end at hyperbaric chamber (20) end; , also be provided with safety valve (24) between hyperbaric chamber (20) and the low-pressure cavity (21).

2. clutch according to claim 1 is characterized in that oil pump (23) is a planetary gear oil pump, planetary pinion wherein (2) and motor (25) interlock, sun gear (4) and driven shaft (7) interlock; Be provided with the control valve of forming by valve rod (6) and spool (14) (24) in driven shaft (7) inside, be with spring (13) on the valve rod (6), when not compressing, the hole (15) on driven shaft (7) is opened in spool (14) sealing at spring (13), makes not UNICOM of hyperbaric chamber (20) and low-pressure cavity (21); Respectively be provided with a platen (8) in the front and back of train of gearings, between each planetary pinion, be provided with spacing block (10); In platen (8), spacing block (10) all is provided with groove and hole on protecgulum (18) and the bonnet (5), and the cavity in spool (14) and driven shaft (7) has been formed oil circuit.

3. clutch according to claim 2 is characterized in that safety valve (17) is located in planetary pinion (2) axle.