The hydrostatic traction drive of the vehicle, the automatic change of the working fluid of the hydrostatic traction drive of the vehicle, the pump unit of the hydrostatic traction drive of the vehicle air-conditioning system and reverse hydrostatic drive chassis of the vehicle and hydrometry unit of the hydrostatic traction drive of a vehicle

 

(57) Abstract:

The invention relates to a hydrostatic drive chassis of the vehicle, the automatic change of the working fluid of the hydrostatic traction drive of the vehicle, the pump unit of the hydrostatic traction drive of the vehicle, the air-conditioning system and reverse hydrostatic drive chassis of the vehicle, hidrometorolo unit of the hydrostatic traction drive of the vehicle, intended for self-propelled machines. In the hydrostatic traction drive of the vehicle containing the pumping unit, hydrometry unit, the automatic change of the working fluid and the feed control combined in a closed loop hydraulic suction, discharge, drain and communications, advanced predusmotrena air conditioning and reverse fluid and the control-diagnostic system, and air-conditioning system and reverse installed at the outlet of the pumping unit and associated power lines with hydromotor unit, and a drain line - with automatic change of the working fluid system recharge associated diagnostic system associated electrical and hydraulic communication with the pumping unit and air conditioning and reverse. 5 C. p. F.-ly, 5 Il.

The invention relates to oil hydraulics and can be used in the hydraulic drive self-propelled machines.

Known hydraulic drive vehicle containing interconnected hose with the formation of a closed loop adjustable pump and hydraulic motor, pump feed, mounted on the same shaft with adjustable pump and connected the outlet to the hose closed circuit through check valves, heater, made in the form of capacity installed therein a heating device and an associated suction hydroline with the pump inlet feed, indicated by a housing of an adjustable pump and switchgear with sink, while equipped with an additional hydraulic pump mounted in the heater and connected to the pump inlet feed with additional hydroline [1].

The closest in technical essence to the proposed concept hydrostatic drive is a three-dimensional hydraulic transmission containing an adjustable pump and unregulated hydraulic motor connected to a power hose, hydraulic control adjustable pump provided with upravlyaevymi hose, and the output with overflow valve, pump recharge with safety valve, non-return valves recharge power hose and installed at the inlet of the filter, drain hydroline reporting cavity of the buildings of the variable-displacement pump and fixed motor between itself and through a heat exchanger to the tank, and between input and output of the filter is installed cavitating nozzle with shut-off element is connected through an intermediate link with a bimetallic plate, installed in the cavity of the filter with the least intensive heating of the working fluid [2].

The closest in technical essence to the proposed system of automatic change of the working fluid of the hydrostatic traction drive system is the regulation of the temperature of the working fluid in the hydraulic drive containing oil tank connected to a drain line via the distributor with the Executive body of the hydraulic actuator, and the control mechanism of the dispenser, and the dispenser is made in the form housed in the same building line spools installed between the throttle, and the cavity formed by the housing and the end face of the first valve, connected to the output inductor and the output of the tank, and on">

The closest to the technical nature of the proposed pumping unit is pumping unit hydraulic system containing a pump in the form of a reversible machine, connected to the pressure line, and a valve device in the form of a suction valve, a valve connected to the suction and pressure hose and providing a message to the pump inlet and the pressure line to the tank at the counter and associated loads applied to the motors. In addition, the pump is connected with the driving motor [4].

The closest in technical essence to the proposed air conditioning system and reverse hydrostatic drive is air conditioning and reverse hydrostatic drive that contains the filter mounted on the pump inlet feed. The filter is equipped with cavitating nozzle installed between input and output of the filter [2].

The closest in technical essence to the proposed hidrometorolo unit is hydrometry unit hydraulic system containing parallel mounted valves connecting the pump motors and suction line and pressure [4].

When the hydraulic drive all the power losses in the aggregate of the . Hot working fluid leads to increased power losses, i.e., to further reduce efficiency and to failures and breakdowns of some parts and components.

To prevent such phenomena in the known hydraulic actuators are used in various constructive measures are included in the hydraulic drive large containers (tanks) with the working fluid, refrigerators, radiators, etc. that increase the surface area of the heat exchanger elements of the hydraulic drive (finned tubes, housings units, etc), install cooling fans, use a pump unit for circulating systems hydraulic coolant (water, antifreeze, etc).

Analysis of all these methods leads to the conclusion that it is impossible to use any of them for the hydraulic system is simple, lightweight, compact and inexpensive means of transport.

In addition, in known similar hydraulic feed is charging pump considerable power, which is a serious disadvantage and leads to the necessity of installing additional hidroapparatus and complexity, reduces the efficiency.

The use of such solutions for the transport self-propelled machines small dinasti hydraulic drive by improving heat transfer and fluid filtration and the that ensures the efficiency of the hydraulic drive in the optimum temperature range regardless of the ambient temperature weight hydraulic and simplifying its design.

The problem is solved as follows.

In the hydrostatic traction drive of the vehicle containing the pumping unit, hydrometry unit, the automatic change of the working fluid and the feed control combined in a closed loop hydraulic suction, discharge, drain, and communication, are additionally provided with air conditioning and reverse fluid and the control-diagnostic system, and air-conditioning system and reverse installed at the outlet of the pumping unit and associated power lines with hydromotor unit, and a drain line - with automatic change of the working fluid, the system recharge is connected by communication lines with automatic change of the working fluid and hydromotors unit, and the control-diagnostic system associated electrical and hydraulic communication with the pumping unit and air conditioning and reverse.

In the system of automatic change of the working fluid gidropony through the dispenser with the Executive body of the hydraulic actuator, tank with the working fluid provides tight with control piston and a sensor end position of the piston, is placed on the body of the tank, the dispenser provides four way three position control electromagnets, and the system further comprises a thermal relay and sensors tank associated electrical communication with the corresponding electromagnets of the distributor, and the volume of the tank is equal to the volume of the hydraulic drive.

The pump unit of the hydrostatic traction drive of a vehicle, containing a pump associated with a drive motor, a valve mechanism, a valve connected by communication lines to the suction and discharge side of the pump, the valve device pump unit made in the form of logical valve with the function OR safety valve and logical valve function And connected valve hose logic valves to the pressure hydroline and suction hydroline pump, and a relief valve connected between the logic valves and associated with their average cameras valve hose, secondary camera logic valve with the function of OR connected valve hydroline control-dagosto pump.

Air conditioning and reverse hydrostatic drive chassis of the vehicle containing the filter and hydraulic lines, further comprises sectionaly two-position valve with hydraulic control of the drain line of the working fluid and reversible four way three-position valve, and the filter is made in the form of a flow conditioning apparatus of the working fluid sectionaly allocator his two lines associated with the power lines, the two lines with flow conditioning apparatus of the working fluid and the two lines with four way valve, two other lines which are connected with the discharge and suction lines.

Hydrometry unit of the hydrostatic traction drive of the vehicle containing the hydraulic motors associated with the dispenser, and the power of the suction line and pressure, additionally contains a single mechanism of regulation of hydraulic motors and a logic valve function, And allocator performed sectionalism dip, providing a parallel or series connection of the motors in the power hydroline, and his two distribution lines the torus, valve chamber logical valve is connected to the power hose, secondary camera, drainage cavities of the hydraulic motors and line feed, in addition, the shafts of the hydraulic motors associated with the Executive bodies of the vehicle, and the hydraulic motors are provided stepwise adjustable.

In Fig. 1 shows a block diagram of the hydraulic drive of Fig. 2 - air conditioning and reverse fluid; Fig. 3 - hydrometry Assembly of Fig. 4 - automatic change of the working fluid; Fig. 5 - pump unit.

The hydrostatic traction drive of the vehicle is performed by a closed-loop scheme.

The hydraulic actuator includes a pumping unit 1, the associated pressure line 2 with air conditioning and reverse fluid 3 through the power line 4 (can be as pressure and drain line depending on working conditions) is connected with hydromotor unit 5, and the drain line 7 - with automatic change of the working fluid 8. In the pump unit 1, the working fluid flows through the suction line 9. The hydraulic drive also contains the feed control 10 connected by a line feed 11 with the control-diagnostic system 12, line feed 13 - nashef 5 is equipped with control knobs respectively 16, 17 and 18, 19. The control and diagnostic system 12 is connected by communication lines 15 with the pump unit 1 and the air-conditioning system and reverse 3.

Air conditioning and reverse fluid 3 contains the full flow conditioning apparatus of the working fluid, for example, the filter 20 fine cleaning with low pressure, sectionaly two-position valve 21 with the hydraulic control line 22 of the drain line 23 of the liquid from the dispenser 24 with manual control handle 17. The filter 20 is connected by its inlet 25 and outlet 26 to the distributor 21. The valve 21 is connected with the pressure line 2 of the pump, the drain line 7 is connected with the system of automatic change of the working fluid 8, the two lines 25 and 26 with the filter 20 and the two lines 23 and 27 with the valve 24. The dispenser 24 is connected by power lines 4 and 6 with the input and output hidrometorolo unit.

Hydrometry unit 5 (Fig. 3) contains two speed-regulated motor 28 and 29 associated with the Executive bodies, such as wheels, and control the motors by the same control mechanism with the control handle 19, the switch which provides the change speed shaft gitenay dip dispenser 30 with manual control handle 18, the valve 31 with the logic function And power lines 4 and 6 and the makeup water line 14. The dispenser 30 is connected by power lines 4 and 6 with air conditioning and reverse 3 working fluid, two hose 31 and 323 with the motor 28 and the two lines 33 and 34 with the motor 29. The dispenser 30 is designed to provide motors with parallel or sequential switching in the power hydroline 4 and 6 for supplying fluid from the pump. Moreover, the operation of motors with parallel corresponds to a differential drive Executive bodies, and serial - wheel drive with locked differential. The valve 31 their valve chambers connected by lines 35 and 36 to the power supply lines 4 and 6 respectively, the average cavity is connected by a line 37 with drainage cavities of the hydraulic motors 28 and 29, and line 14 with the feed control 10.

Automatic change of the working fluid 8 (Fig. 4) intended to replace the heated working fluid in a closed power hydrocortone on the cooled working fluid. Unit 8 includes a pressure tank 38 with a dividing piston 39, dividing it into two chambers 40 and 41, and the sensors 42 and 43 of the end position of the piston, four way three position valve TBA, and hydroline drain 7 and the suction 9. Pressure tank 38 their cavities 40 and 41 connected by a hose 49 and 50 to the valve 44. Thermal relay 47 is connected with the sensors 42 and 43 of the electric lines 55 and 56. The sensor 43 and the sensor 42 is connected across the power lines 57 and 58 with the electromagnets 45 and 46, respectively. The volume of the working fluid pressurized tank 38 is equal to the volume of the working fluid in the hydraulic units and hydraulic hose.

System pump unit 1 (Fig. 5) includes a speed-adjustable, mounted on the shaft of the motor vehicle, the pump 59 to the control handle 16 which is connected by suction line 9 and the pressure line 2 and valve device protection and recharge, automatically providing protection against overloading of the hydraulic system and the feed pump 59 in all modes.

Valve device consists of a logical valve 60 with the function OR safety valve 61 and the logic valve 62 with the function And connected to a pressure hydroline 2 and hydroline suction 9 of the pump. Moreover, the valve 60 is connected to one of its valve chamber via a line 63 to the pressure line 2 of the pump, and the other valve chamber via a line 64 to the suction line 9 pump, clap included between the valves 60 and 62 by lines 67 and 68, in addition, the average Luggage valve 60 is connected by hydroline 15 with the control-diagnostic system 12 and the middle valve chamber 62 with hydroline 13 with the feed control 10 and line 69 - with a drainage cavity 59.

The control and diagnostic system 12 includes a set of standard showing measuring devices, for example, pressure gauges high and low pressure switches and thermometers associated with input and output system pump unit 1 lines (hydraulic and electric) 15 and 11.

In-feeding system 10 made in the form of a small hydraulic accumulator capacity, sufficient to compensate only the external leakage of the working fluid on the seals of the pump and hydraulic motors. Internal flows through valve devices are returned in-line low pressure closed hydrocortone.

The hydrostatic traction drive of the vehicle are as follows.

Simultaneously with the starting of the internal combustion engine is driven pump 59, which is mounted on a drive shaft of the vehicle and delivers the working fluid in the pressure line 2 in an air conditioning system and reverse flow of the working fluid 3. the x positions: medium - "stop," the top - front and bottom - back.

For example, when moving forward, the working fluid is supplied via power hydroline 4 hydrometry unit 5 and two shafts of the hydraulic motors 29 and 29 are set in motion by the Executive authorities, such as wheels, and power hydroline 6 working fluid is returned to the system 3 and then through hydroline drain 7, the automatic change of the working fluid 8 and hydroline discharge 9 to the pumping unit 1.

Closed hydromotor 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 1 in all modes fueled from backfeed system 10 for supporting the hose connection 11 to 13 via a valve device of the pumping unit and the logic valve side hydraulic motors.

Feeding is carried out as follows.

When the hydraulic drive is not running, the pressure of the working fluid in the system recharge 10 and drainage cavities of the hydraulic motors 28 and 29 is the same. During operation, leakage of the working fluid flowing into the drainage cavity, raise a little bit of pressure and fluid line 37 flows through the open valve gidroapparat 31 in-line low pressure 4 or 6, because the pressure is determined only by the pressure in the system recharge 10. The same origin is hydrated valve 61 is connected automatically by the valve 60 to the discharge line, 2 lines 63 and 67, and valve 62 to the suction line 9 on the lines 66 and 64, providing protection for the entire hydraulic system overload (from dangerous pressure). When modes, braking on the engine and start the engine with acceleration", a relief valve 61 connects the input to the line 9, which became the line of the high pressure valve 60 through line 64 and valve 62 to line 2, which became the line low pressure lines 65 and 63.

An important advantage of this hydrostatic drive is a compact and reliable valve device of the pumping unit, ensuring the protection of all components and piping from damage high pressure only one safety valve at all possible modes of operation of the machine.

The air conditioning and reverse 3 working fluid is carried out as follows.

The operation mode is set by the handle 17, the working fluid passes through the circuit 2 - 21 - 27 - 24 - 4 and hydrometry unit, and not in the chain 6 - 24 - 23 - 21 - 25 - the filter 20 - 26 - 21 - 7 and the automatic change of the working fluid 8. The filter is under low pressure.

When modes, braking on the engine and start the engine with acceleration" high pressure occurs in line 6, and lowest in Liniya working fluid follows the chain from hidrometorolo block 5: 6 - 24 - 23 - 21 - 7 and further through the system 8 in the pump unit 1 and chain 2 - 21 - 25 - filter 20 - 26 - 21 - 27 - 24 - 4 and later in hydrometry unit 5. The filter 20 is working again under low pressure working fluid.

Work hidrometorolo unit 5 is carried out as follows.

During normal operation (forward and backward) with the inclusion of the distributor 30 in the lower position (differential drive Executive bodies) of the working fluid supplied to the hydraulic motors 28 and 29 in parallel circuits: 4 - 30 - 31 - hydraulic motor 28 - 32 - 30 - 6 (first circuit) and 4 - 30 - 33 - hydraulic motor 29 - 34 - 30 - 6 (the second circuit).

When switching the control valve 30 in the upper position of the handle 18 of the distributor 30 in the upper position (differential locked), the working fluid supplied to the hydraulic motors on the circuit: 4 - 30 - 31 - hydraulic motor 28 - 32 - 30 - 33 - hydraulic motor 29 - 34 - 30 - 6. In the above two modes hidrometorolo unit 5, the valve 31 is automatically provides a supply of low pressure line from the system 10 and the protection drainage cavities of the hydraulic motors from increased pressure. If the increased leakage in the hydraulic motors will lead to increased pressure in their drainage cavities more than the pressure in the system 10, the working fluid and whether the lines 35 or 36 in the drain line 6 or 4. Thus using a single valve 31 is provided and the makeup of the two motors and the protection of their drainage cavities from increased pressure.

When modes, braking on the engine and start the engine with acceleration" high pressure appears in line 6 and line 4, low pressure, and the valve 30 should be in the bottom position. The high pressure line 36 will fall into the lower valve chamber of the valve 31 will raise the bottom of the bulb, through which the plunger will lift the upper bead and the average cavity will connect line 14 and 37 with the upper valve cavity and through the line 35 from line 4. Leakage from the drainage cavities will be conducted in line 4, protecting the drainage cavity motors from increased pressure. And the connection system 10 through line 14 and 35 will provide a supply of low pressure cavities.

The system of automatic change of the working fluid 8 is as follows.

Before you begin the piston 39 of the tank 38 is located in one of the end positions, thermal relay 47 is set to the maximum allowable temperature of the working fluid. During operation of the vehicle fluid temperature rises. When the limit temperature is reached Rey in contact with the piston, and further to the solenoid 45 of the valve 44 through line 57. The flow of hot working fluid from the power line 7 enters the distributor 44 and then through the line 49 into the cavity 40 of the tank 38 and presses the piston 39, which displaces the cold working fluid from the cavity 41 in line 50, the valve 44 in line 9 to the suction pump. Replacement of hot fluid to the cold going up until the piston will not fit into the other extreme position, the sensor 43 and thermal relay 47 closes, the solenoid 45 is disconnected, the valve 44 will occupy a middle neutral position, hydroline 9 and 7 are connected to the hydraulic drive will continue to operate in normal mode without stopping the vehicle.

We offer automatic temperature control fluid can be easily and securely to ensure the normal temperature continuous operation of the hydrostatic drive with improved mass-dimensional parameters in dozens of times, increase efficiency and productivity of the machine when operating in conditions of high ambient temperature of the space. This hydraulic system significantly reduces the complexity of machine maintenance, fluid flow and simplifies winter operation, to the In different modes hydrostatic drive works as follows.

1. The start of the internal combustion engine. The control handle 16 by pump 59 is set to the minimum value of the effective volume, VHE= min. The handle 17 of the valve 24 is set in the neutral position (hydroline 4 and 6 are interconnected). The rest of the arm position can be in any position. Start the internal combustion engine of the vehicle. The pump 59 is rotated with a minimum speed of idling of motor vehicles, with the minimum flow and pressure of the working fluid circulating through the main closed circuit.

2. Starting forward (backward). The position of handles: the handle 16 by the pump 59 is set to the minimum value of the effective volume, VHE= min; control handle 18 of the valve 30 is in the lower position, the General control handle 19 of the hydraulic motors 28 and 29 is set to the maximum values of displacement hydraulic motors VOM= max. Release the Parking brake of the vehicle, turn smoothly handle 17 of the valve 24 forward (backward) and simultaneously increase the speed of the cutting circulates through the main circuit. This position handles the vehicle can move with a large enough range of speeds by changing the number of revolutions of the engine.

3. The braking of the vehicle. The hydraulic braking system is as follows. When reducing driver speed of the internal combustion engine, the hydraulic motors 28 and 29 are beginning to operate in pumping mode, i.e. the pressure in the pressure hose, for example, 31 and 33 (moving forward) will fall to the pressure in the make-up tank 10, and the hose 32 and 34 and the next in the chain of valve 30 hydroline 6 - valve and 24 - hydroline 23 line 22 to the valve 21 will be moved to the upper position, at which the working fluid will flow into the line 7 - box 8 - line 9 - in pump unit, which will work in hydromotors mode and will promote internal combustion engine, braking the vehicle.

4. The increase in vehicle speed (acceleration). To increase the speed of the vehicle with the hydraulic system allows you to perform various switching depending on the driving conditions and road conditions. With a good level road, you can switch the handle 16 is m hydraulic motors, with the possible moving at high speed, but low fuel consumption of the engine.

5. Towing, coasting and the start of the internal combustion engine. In these modes of motion of the vehicle, you must install the following position of handles: the handle 17 of the valve 24 is set in the neutral position (middle), the handle 18 of the valve 30 is in the upper position (differential switched off), the handle 19 of the hydraulic motors 28 and 29 in the position of minimum volume of hydraulic motors.

The braking of the vehicle is normal working brakes. To start the internal combustion engine of the tug or acceleration of the vehicle downhill, you must install the control knob 16 by pump 59 is at the maximum working volume of the pump and turn the control knob 17 of the valve 24 in the upper position (forward).

1. The hydrostatic traction drive of the vehicle containing the pumping unit, hydrometry unit, the automatic change of the working fluid and the feed control, the Association in a closed loop hydraulic suction, discharge, drain PCA working fluid and the control-diagnostic system with air conditioning and reverse installed at the outlet of the pumping unit and associated power lines with hydromotor unit, and a drain line - with automatic change of the working fluid, the system recharge is connected by communication lines with automatic change of the working fluid and hydromotors unit, and the control-diagnostic system associated electrical and hydraulic communication with the pumping unit and air conditioning and reverse.

2. Automatic change of the working fluid of the hydrostatic traction drive of a vehicle, a tank containing a working fluid, connected hydroline through the dispenser with the Executive body of the hydraulic actuator, characterized in that the automatic change of the working fluid tank with the working fluid provides sealed with a dividing piston and sensors extreme positions of the piston, is placed on the body of the tank, the dispenser provides four way three position control electromagnets, and the system further comprises a thermal relay and sensors tank associated electrical communication with the corresponding electromagnets of the distributor, of a vehicle, containing a pump associated with a drive motor, a valve mechanism connected valves the suction and discharge side of the pump, characterized in that the valve device pump unit made in the form of logical valve with the function OR safety valve and logical valve function And connected valve hose logic valves to the pressure hydroline and suction hydroline pump, and a relief valve connected between the logic valves and associated with their average cameras valve hose, secondary camera logic valve with the function of OR connected valve hydroline with the control-diagnostic system and the average camera logic valve function And system recharge and drainage cavity pump.

4. Air conditioning and reverse hydrostatic drive chassis of the vehicle containing the filter and hydraulic lines, characterized in that the air-conditioning system and reverse fluid further comprises sectionaly two-position valve with hydraulic control of the drain line of the working fluid and reversible four tranposition, sectionaly allocator his two lines associated with the power lines, the two lines with flow conditioning apparatus of the working fluid and the two lines with four way valve, two other lines which are connected with the discharge and suction lines.

5. Hydrometry unit of the hydrostatic traction drive of the vehicle containing the hydraulic motors associated with the dispenser, and the power of the suction line and pressure, characterized in that hydrometry unit further comprises a common mechanism of regulation of hydraulic motors and a logic valve function, And allocator performed sectionalism dip, providing a parallel or series connection of the motors in the power hydroline, with its two lines of the distributor is connected with a power hose, two lines with one of the hydraulic motors and the two lines with a different motor, valve chamber logical valve is connected to the power hose, average camera, drainage cavities of the hydraulic motors and line feed, in addition, the shafts of the hydraulic motors associated with the Executive bodies of the vehicle, and the hydraulic motors is provided by a stepped-R

 

Same patents:

The invention relates to the field of engineering, namely to the hydraulic systems of tractors and other self-propelled and road-construction machines

The invention relates to hydraulic machines and hydraulic vane pump and motor

The invention relates to mechanical engineering and can be used in any hydraulic self-propelled machines that require adjustable speed mechanism in a wide range

The hydraulic // 2011077

The invention relates to hydraulic systems for the preparation of the working environment and can be used for mixing multiple components in order to obtain a working environment with the given parameters on the fractional composition and bulk viscosity

The invention relates to pumping units, where the drive motor is applied the actuator, for example a turbine, the working drive fluid which is supplied from the pump-the pump that is driven, for example, from the internal combustion engine or electric motor

Hydraulic system // 2064610
The invention relates to mechanical engineering, in particular to mobile hydraulics operated at low ambient temperatures

The invention relates to hydraulic mobile machines operating in dusty environments and contamination, i.e

The invention relates to the construction and road machines operating in freezing temperatures, in particular for earthmoving machines, equipped with a powerful hydraulic actuator, such as excavators, loaders

The invention relates to hydraulic actuators and can be used during operation

The invention relates to a hydraulic drive for vehicles and can be used in road construction machinery

The invention relates to vehicles, and in particular to automatic control systems components and mechanisms of the vehicle, in particular a combustion engine, hydromechanical transmission, transfer case, locking differential, etc

The invention relates to a hydraulic vehicle and primarily can be used as a hydraulic drive chassis of the truck with an internal combustion engine

The invention relates to a method and controls tractors, cars, Agronomico and other mobile machines
Up!