SU548453A2 - Device for controlling the clutch of the transport vehicle - Google Patents

Description

(54) DEVICE FOR CONTROLLING THE CLUTCH OF A TRANSPORT MACHINE

1 of which is located shaft 2 with centrifugal weights 3. Shaft 2 is driven by the engine transporting the machine, naimer, using a Shk. 4. Loads 3 abut against the rod 5, having the possibility of axial stirring inside the shaft 2.

The body of the electromagnet 6 is fixed to the housing 1 of the centrifugal regulator. Inside the body of the electromagnet 6 a coil with a winding 7 is installed.

The valve 11 has in its middle part an annular groove 12. Inside (the valve I is channel 13, connecting pipe, 12 groove 12 with the cavity in which the valve spring 14 is located. A cylinder 15 is attached to the valve body, coaxially with it, inside which there is a piston 16. The piston 16 is pressed against the housing 10. by a spring 17, the force of which is greater than the force of the spring 14.

Between the stock 5 and valve 11, inside the core 8, there is a pusher 18 centered on the body of the electromagnet and the valve body. The pusher 18 has the possibility of axial stirring, eni.

Next to the pusher 18 is its rod 19, which also has the possibility of axial movement and is pressed by a pre-deformed spring 20. The force of the spring 20 is greater than the force of the valve spring 14.

The device comprises a liquid tank 21 connected to a source: co: m pressure pipe, for example, a pump 22 driven by the engine of the machine, connected channel 23 to the valve body 10. Parallel to the pump 22 is installed limiting valve 24.

The valve body 11 is also connected by a pipe 25 to a tank 21 and a pipe 26 to an executive servo lipid 27, which controls the normally open-type free friction coupling 28.

The winding of the electromagnet is connected to the battery 29 and the switching lever of the loops 30 in the gearbox of the transport vehicle. An electric switch is located in the lever of the lever for shifting the steps 30, which is automatically triggered when a force is applied to the lever of the lever for shifting the steps.

A thermostat 31 (see FIG. 2) is provided in the device, for example, with a solid filler, having a movable rod 32, and an axial direction that cannot be displaced by iB with a change in temperature. In the stem 32 of the thermostat 31 rests the spring 14 of the valve 11 and the return spring 33 of the stem of the thermostat.

The device works as follows.

With an increase in the angular speed of rotation of the crankshaft of the engine and, accordingly, the speed of rotation of the shaft 2 of the centrifugal regulator, the force of the loads 3 on the rod 5 increases. The rod 5 of the centrifugal regulator acts on the pin 19 of the pusher 18.

Due to the pre-compressed spring 20, this force is transmitted to the spring-loaded valve 11. The valve AND moves to the right and partially joins the spring 14. The connection of the actuating cylinder 27 to the tank 21 through pipe 25 stops and the actuating servo 27 starts to connect to the pump 22. As the pressure increases in the pipe 26, due to the feedback channel 13, the pressure increases and the position of the spring 14 increases. The indicated pressure, acting on the right of the valve 11, sets it in such a position that Actions on the left side tol1katel 18 is balanced by the force on the right.

At the same time, the pressure will increase and in the actuating servo cylinder 27. The actuating servo cylinder 27 transmits the force

on the lever friction clutch 28 and partially includes the clutch.

With a further increase in the angular velocity of the engine shaft, the pressure in the actuating servo cylinder 27 will accordingly increase.

Thus, the centrifugal regulator, together with the valve 11, operates as a pressure regulator, for which the input value is the angular velocity of rotation of the shaft.

engine transport maschiny.

Since the friction torque in the clutch depends on the pressure in the executive servo motor 3000, it will be regulated by a change in the angular velocity of the motor shaft of the vehicle.

The described process of increasing the friction torque in the clutch provides the starting and acceleration of the transport gear.

The presence of the piston 16, spring-loaded relative to the cylinder body 15, allows, when

small angular speeds of the shaft 2 get

increase in pressure change in performance servo cylinder 27.

Due to the fact that the feedback channel 13 has a small flow area, and the piston 16 is connected to the cylinder 15 through the spring 17, in the transient clutch transitions that occur when the transport machine is moving, the pressure in the cavity of the spring 14 occurs with some delay . This leads to the fact that in transient clutch modes, the valve 11 opens more, improving the dynamic characteristics of the device.

When the engine of the transport vehicle is warming up, its idling speed increases. This leads to an increase in pressure in the actuating servo cylinder 27. Therefore, when the lower stage is turned on in the gearbox and the drive is released, the throttle drive transport machine starts to "crawl, which is undesirable.

The thermostat 31 allows, when heating the device, which occurs simultaneously with the warming up of the engine of the vehicle, to additionally compress the spring 14 1: lalan 11 and, therefore, correct the start of the clutch.

Handicap invention

Claims (2)

1. A device for controlling the clutch of the transnorth manshna by author. St. No. 230650, which differs from the fact that, in order to improve its static and dynamic characteristics, the co-ax spring-loaded piston, interacting HUIM with AND) end valve. 2. A device according to claim 1, characterized in that in a cylinder; a thermostat with a stem that interacts with a valve spring. The source of information received in the course of the interview is: 1. Auth. St. Up to 230650, class In GOk 23/02. 1962 (prototype). B /