Volume hidrotransmisia active trailer link self-propelled machines

 

(57) Abstract:

Usage: as a hydraulic driving wheels of the trailer link self-propelled machine. The inventive three-dimensional hidrotransmisia contains the main pump is connected by a hose with at least one hydraulic motor of the drive wheels trailer link, block feeding, relief valve, two check valves and the hydraulic reservoir system regulation for the filing of an adjustable pump, the gauge parameter a curved trajectory. Regulation of the supply of the regulated pump is equipped with servo-hydraulic actuator, hydraulically connected with the pump unit recharge and hydraulic tank. A throttling valve and servo hydraulic performed with a movable sleeve connected with the output of the sensor parameter a curved trajectory. 1 Il.

The invention relates to automotive engineering, in particular to the surround hidrotransmisia, and can be used as a hydraulic driving wheels of the trailer link self-propelled machine where you want to improve traction and maneuverability of the machine matching the velocities of rotation of the driving axles of the tractor and trailer link.

Known volume the pump, coupled pressure and drain hose with hydraulic motor drive wheels of the trailer, the pressure sensor in the pressure hydroline, the flow regulator, the gauge parameter a curved trajectory, the flow sensor and the summation block. In its approval of rotation of the driving axles of the tractor and trailer link is provided through the use of the throttle means of adjustment of the hydraulic drive, which is not economical.

Known hidrotransmisia self-propelled machine that is as closest to the technical nature of the proposed technical solution is adopted as the closest analogue of [2] contains driven by the mechanical transmission of the tractor adjustable pump pressure and connected the drain hose at least one hydraulic motor of the drive wheels, and through the block recharge, reservoir, system of feed control variable-displacement pump that consists of an inclined washer pump, flow sensor, three adjustable gidroksila and hydraulic cylinder with a spring-loaded piston rod.

A disadvantage of this device is that it does not provide for regulation of frequency of rotation of the driving wheels when moving along a curved trajectory that Osobaya frequency of rotation of the driving axles is much worse traction and maneuverability self-propelled machines.

The purpose of the invention better traction and maneuverability self-propelled machines.

The objective is achieved by the fact that the bulk hidrotransmisia containing drive adjustable pump connected to the hydraulic motor of the drive wheels trailer link pressure and drain hose, and through the power feed from the tank, the system of feed control variable-displacement pump in the form of an inclined washer, flow sensor, three adjustable gidroksila and hydraulic cylinder with a spring-loaded piston with a rod equipped with a sensor parameter a curved trajectory. System flow control is equipped with hydraulically connected with the power feed and the tank servo hydraulic drive, comprising a throttling valve consisting of a valve and a movable sleeve, two spring-loaded piston connected to the washer and hydraulically connected with the valve, and a differential lever, pivotally connected to the inclined plate, the piston rod of the hydraulic cylinder and valve throttling valve. The movable sleeve and a throttling valve servo hydraulic actuator is connected with the output of the sensor parameter a curved trajectory. As a parameter crinoline adjacent trailing links, etc.

The drawing shows a schematic diagram of the inventive device.

Volume hidrotransmisia active trailer link self-propelled machine includes adjustable pump 1 which is driven from the transfer case (RK) mechanical transmission of the tractor. The pump 1 is connected to a pressure of 2 and drain 3 hose with hydraulic motor 4 connected with the driving wheels 5 trailer link. The hydraulic system also includes unregulated feed pump 6, the relief valve 7, two non-return valve 8 and the tank 9. Control system working volume of the variable-displacement pump 1 consists of an inclined washer 10, sensor 11 of consumption, three adjustable gidroksila 12, 13 and 14, the hydraulic cylinder 15 with the spring loaded piston, the rod of which is connected through a differential lever 16 with an inclined washer 10 and the spool 17 a throttling valve servo hydraulic control washer regulated pump 1, which is also the sliding sleeve 18 and two hydraulic cylinders 19 and 20, moves the puck 10 of the regulated pump 1. Servo hydraulic works from the pump feed 6. Self-propelled machine when it has a sensor parameter curvilinear motion (for example a sensor of the angle of folding) 21, the output of which is connected with Gil

Before driving a self-propelled machine bevel washer 10 regulated pump 1 has a slope, which determines the magnitude of the displacement pump 1 is required for coordinated rotation of the driving wheels of the tractor and trailer when driving straight with no load (the pressure in the pressure hydroline 2 is zero). The throttle 13 is closed, and the inductors 14 and 12 are open. At the beginning of the movement of the machine in a straight line in the pressure hydroline 2 increases the pressure when the flow rate is practically zero, so the signal from the flow sensor 11 is missing and if the closed throttle 13 and open chokes 12 and 14, the piston of the hydraulic cylinder 15 is moved to the extreme right. The differential lever 16 transmits this movement to the spool 17, the displacement of which is to the right opens the flow of the liquid from the pump recharge 6 in the cylinder 19 and the cavity under the piston cylinder 20 is connected with the tank 9. In the result, under the action of pressure in the system feeding the angle of inclination of the washer 10 becomes maximum, and hence the maximum flow of the pump 1. The intensity increase of the torque at the drive wheels trailer link increases, and it is at the beginning of the movement.

After the appearance of the flow in the pressure hydroline 2, the signal from the sensor the cylinder 15. It ceases to respond to high-frequency pressure changes in the pressure hydroline 2 and hidrotransmisia implemented the law regulating gear ratio corresponding to the movement of self-propelled machine in a straight line. Washer pump 1 takes the position that provides a consistent rotation of the driving wheels of the tractor and trailer.

If self-propelled machine does curvilinear motion, as is known from theory of motion of wheeled vehicles, wheel trailers link to move in a path of smaller radius than the wheels of the tractor, thus to provide kinematic compliance it is necessary to reduce the rotational speed of the wheels of the trailer link. In the proposed device, it is provided as follows.

If the parameter a curved trajectory using the angle between the longitudinal axes of the tractor and trailer (angle folding), the signal from the angle sensor folding 21 moves the sleeve 18 in a throttling valve servo hydraulic actuator so that the fluid from the feed pump 6 is supplied below the piston 20, and from under the piston 19, the liquid is directed to drain. The angle of inclination of the washer 10 of the pump 1 is reduced and, consequently, decreases and the value of it is you volume hidrotransmisia overload serve as safety valves (not shown).

Thus, the use of the proposed volumetric hidrotransmisia active trailer link self-propelled machine ensures the effectiveness of start and has improved traction characteristics as when driving in a straight line, and when moving along a curved trajectory. By reducing the moment of resistance to rotation of the self-propelled machine (there is a desired kinematic correspondence between the frequency of rotation of the driving wheels of the tractor and trailer) is improving its maneuverability.

VOLUME HIDROTRANSMISIA ACTIVE TRAILER LINK self-PROPELLED MACHINE that contains driven by the mechanical transmission of the tractor, self-propelled machine adjustable pump pressure and connected the drain hose at least one hydraulic motor of the drive wheels trailer link, and through the power feed from the tank, the system of feed control variable-displacement pump in the form of an inclined washer pump, flow sensor, three adjustable gidroksila and hydraulic cylinder with a spring-loaded piston with the rod, characterized in that it has a sensor parameter a curved trajectory, and the system of regulation of the supply of the regulated pump is provided with hydraulically connected with the block recharge and giovagnoli sleeves, two spring-loaded piston connected with an inclined washer adjustable pump and hydraulically connected with the valve, and a differential lever, pivotally connected to the inclined washer pump, the piston rod of the hydraulic cylinder and valve throttling valve, and a movable sleeve and a throttling valve connected with the output of the sensor parameter a curved trajectory.

 

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