Automobile clutch control device

FIELD: transport engineering.

SUBSTANCE: invention relates to power takeoff control devices of special automobiles. Proposed device to control clutch has pneumohydraulic booster and clutch master cylinder. Moreover, device contains additional clutch master cylinder connected to pneumohydraulic booster through hydraulic distributor providing operation of clutch at two modes, namely, traveling and power takeoff ones. Distributor is furnished with mode automatic interlock member. Device contains pickup operating at power takeoff mode in case of overload. Additional clutch master cylinder is provided with makeup tank. Hydraulic distributor can be furnished with mode selector handle or electromagnetic selector. To change over clutch from traveling into power takeoff mode, hydraulic distributor is furnished with electropneumatic drive with pushbutton in cab to switch on electromagnetic valve. Hydraulic distributor is furnished with hydropneumatic drive operated by clutch pedal to change over clutch operation modes.

EFFECT: improved operating conditions of clutch control device, improved convenience of control of clutch on special automobiles with power takeoff devices.

8 cl, 3 dwg

 

The invention relates to a motor technique, to means for controlling the PTO in special vehicles.

Known coupling coupling [1], is used as the mechanism for connection and disconnection of shafts of the engine and gearbox in the power units of vehicles.

It is also known clutch used on KAMAZ [2]. To control the clutch has pneumohydraulic and clutch master cylinder associated with a pedal installed in the cab.

The device control grip provides traction in transport mode. In special vehicles require additional devices to control the clutch when the PTO.

The task of the invention is to improve the operational characteristics of the device to control the clutch of the vehicle and improve comfort when running clutch in special vehicles containing devices PTO for additional units.

To solve this problem in the device to control the clutch installed additional clutch master cylinder and means for switching the clutch from the transport mode to the power take-back and forth.

The invention consists in the following.

Device to control the coupling is by giving the car contains pneumohydraulic and clutch master cylinder.

New is that the device contains an additional clutch master cylinder connected to pneumohydraulic through hydraulic valve, ensuring the operation of the clutch in 2 modes - transport and mode selection power.

The dispenser is equipped with a body of the automatic locking mode. The device includes a sensor, a triggered mode selection power overload. Additional clutch master cylinder provided with a feed tank. Hydraulic valve can be equipped with a handle to switch modes or electromagnetic switch modes.

For switching the clutch from the transport mode to the power take-off hydraulic valve equipped with electrohydrodynamical placed in the cab button on the solenoid valve. To switch the coupling of the mode selection power in transport mode, the hydraulic distributor is equipped with hydropneumoprivod included the clutch pedal.

The drawings show a pneumatic circuit device for controlling the clutch of the vehicle. All three schemes differ in only one element different types of hydraulic control valves (3).

Figure 1 is a diagram of a hydraulic valve in the form of dvuxmestnogo perepuska what about the valve 3. Figure 2 - valve 3 in the form of a manually operated valve, carried out using the set knob. Figure 3 - valve 3 in the form of a solenoid valve.

The device is installed on vehicles equipped with an additional power take-off drive for special units.

The working cylinder 1 pneumohydraulic clutch is connected with the standard master cylinder clutch 2 water pipelines. Through the hydraulic valve, which is dvuhmestrye the bypass valve 3 (Fig 1), a working cylinder pneumohydraulic 1 is connected with an additional master cylinder clutch 4. Additional master cylinder is connected by mechanical communication with the air motor 5. The working cavity of the air motor 5 is connected through solenoid pneumatic valve 6 and receiver 7. The pneumatic engine, electroneurography and receiver are connected by pneumotropica 8 and 9. Master cylinders and clutch slave cylinder of pneumohydraulic connected with the selector valve 3 water pipelines 10, 11 and 12. Master cylinders clutch fitted recharge tanks 13 and 14. On a regular master cylinder clutch 2 is set to pedal 15.

The device operates as follows.

In transport mode, the clutch is controlled by the pedal 15. When the pedal 15 pojavljajutsjanovye in the pipeline 10, why is triggered dvuhmestrye bypass valve 3, locking the pipe 11 and the connecting pipes 10 and 12. In this position, the bypass valve is normal operation of the vehicle in the transport mode.

Mode PTO clutch is controlled by an additional master cylinder clutch 4. In early work in this mode, the button is placed in the driver's cab, served an electrical signal to actuate the electromagnetic valve 6. Included pneumatic valve 6 connects pneumotropica 8 and 9, providing a supply of compressed air from the receiver 7 to the air motor 5. The air motor 5 clicks on stock additional clutch master cylinder 4 what makes the pressure in Giprotruboprovod 11. The result of this is triggered dvuhmestrye bypass valve 3, locking the pipe 10 and the connecting pipes 11 and 12. Now the clutch works as a PTO, i.e. enabling and disabling are additional master cylinder clutch 4. When the pedal 15 is not in use, the gear lever is in the neutral position, rotates the input shaft of the gearbox connected to the device power. So the clutch works as a PTO.

To move in the transport mode the driver presses on the pedal, the coupling is possible 15. An automatic valve (valve 3), locking the pipe 11 and the connecting pipes 10 and 12. The clutch starts to work in transport mode, i.e. managed by a regular master cylinder clutch 2 from the pedal 15.

Body automatic locking modes is the valve that is built into dvuhmestrye the bypass valve 3. The spool is shifted in the channel with three holes due to the pressure difference, blocking one of the pipes 10 or 11, which results begin to communicate the pipes 11 and 12 or 10 and 12, respectively.

During system operation mode selection the power provided by the sensor, triggered overload. For example, a special unit for which the PTO is a drilling rig. In the event of an overload during drilling, threatening emergency damage to the installation, the sensor triggers (not shown)that supplies the electric signal to the electromagnetic pneumatic valve 6. Further there is a disconnect clutch (and thus power) in the above diagram.

Instead of the described dvuxmestnogo bypass valve 3, which provides automatic switching, if necessary, it is possible to install the valve with manual control. The valve m which may be provided with a handle for toggle or push button switch. In figure 2, the valve 3 is controlled manually. Switching device to operate in transport mode or in the mode selection power by turning the handle. Figure 3 valve 3 is controlled by an electric signal from the operator button. The device is installed the version of the valve of the three, which would prefer the customer.

Sources of information

1. The Soviet encyclopedic dictionary. Ed. "Soviet encyclopedia". M., 1983, s.

2. Medvedkov VI and other Vehicles KAMAZ-5320 and Ural-4320. M., ed. "DOSAAF USSR, 1981, s-137 - the prototype.

1. Device for controlling a clutch of a motor vehicle comprising pneumohydraulic and clutch master cylinder, characterized in that the device contains an additional clutch master cylinder connected to pneumohydraulic through hydraulic valve, ensuring the operation of the clutch in 2 modes - transport and mode selection power.

2. The device according to claim 1, characterized in that the dispenser is equipped with a body of the automatic locking mode.

3. The device according to claim 1, characterized in that it comprises a sensor trigger mode selection power overload.

4. The device according to claim 1, characterized in that the additional clutch master cylinder provided with a feed tank.

6. The device according to claim 1, characterized in that the hydraulic valve is equipped with an electromagnetic switch modes.

7. The device according to claim 1, characterized in that for switching the clutch from the transport mode to the power take-off hydraulic valve equipped with electrohydrodynamical placed in the cab button on the solenoid valve.

8. The device according to claim 1, characterized in that the switching clutch mode PTO in transport mode, the hydraulic distributor is equipped with hydropneumoprivod included the clutch pedal.



 

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