(57) Abstract:The invention relates to transport, namely, base chassis with hydrostatic transmission, mainly mounted with various technological road construction and agricultural equipment. The power module includes a power unit with adjustable pump drive technological equipment and actuator stroke, pressure pipelines pump actuator stroke interconnected on-off valves and pressure piping pumps and process equipment - three position valves, control units, connected to the adjustable pump, final drive with hydraulic motors of the drive stroke, the coupling device with the supporting wheel and the cylinders rotate and swivel bracket from the driver's seat. The pump actuator stroke is made reversible, pressure and drain channels distributors pairwise joint pipelines, while the outlet pipe is provided with overflow valve. The invention is directed to the ordering of the movements of the driver in accordance with the direction of movement of the module and to exclude the occurrence of peak pressure in the hydraulic system of the drive stroke by the replacement of the I transport, namely, the base chassis with hydrostatic transmission, mainly mounted with various technological road construction and agricultural equipment.A device containing a power unit with adjustable pump drive process equipment, pumps, actuator stroke, pressure pipelines pump actuator stroke are connected through on-off valves and pressure piping pumps, process equipment through the three-position valves, control units, connected by control lines with adjustable pump, final drive with hydraulic motors of the drive stroke .The disadvantages of this device is a reversal of the hydraulic motors of the drive train through distributors, which leads to the occurrence of peak loads at the time of switching of the valves and heating oil. In addition, to prevent operation of the motors in the mode of the pump when driving downhill on the motors must be installed protivougonnye valves, which complicates and increases the cost of the hydraulic system.Closest to the invention to the technical essence and the achieved result I have isconsistent equipment, containing the power unit, swivel bracket with driver's seat, drawbar with support wheel and the cylinders rotate .The disadvantages of this known device is that when turning the driver's seat for long movements, for example, backwards, the direction of movement of the driver does not correspond to the fact that it performs when moving the machine front. So to rotate, for example, to the left of the steering wheel had to turn to the right. This created difficulties in the operation of the machine.The present invention is designed to streamline the movement of the driver in accordance with the direction of movement of the module (movement of the machine front or back) and to exclude the occurrence of peak pressure in the hydraulic actuator stroke by eliminating distributors, reversing the direction of rotation of motors.This technical result is achieved due to the fact that in a power module containing a power unit with adjustable pump drive technological equipment and actuator stroke, pressure pipelines pump actuator stroke communicated with each other via on-off valves and pressure piping pumps tehnologicheskogo wireimage pumps, final drive with hydraulic motors of the drive stroke, the coupling device with the supporting wheel and the cylinders rotate and swivel bracket from the driver's seat, the pump actuator stroke is made reverse line feed, pressure and drains the three-position directional United piping, drain piping is equipped with overflow valve, with relief valve supports in spill pipeline pressure greater than the resistance in the line feeding reversible pumps, control line reversible pumps equipped with a dispenser, made off, and the control units are mounted on the swivel bracket, pressure pipes of cylinders rotation is supplied by a dispenser, made dip.In the proposed power module reverse control ensures the movement of cars on the road in transport mode, for example, front, while the process equipment is located behind the driver and in this case it does not interfere with the visibility of the road surface. In operating mode, the driver's seat rotated 180oand the module moves backwards, with technological equipment is in front of the eyes of the driver, i.e. it Ho the s module remain the same, when the movement of the module front, and when it is moving backwards.In Fig. 1 shows a power module (optional jockey wheel is omitted, the process equipment is not shown); Fig. 2 is a view along arrow a of Fig. 3 - swivel arm with a driver's seat; Fig. 4 - section B-B view in plan on swivel arm with a driver's seat; Fig. 5 and 6 is given a schematic hydraulic system of the power module.The power module (module Samoilova), mainly for the process of road construction and agricultural equipment containing power unit 1 includes a diesel engine 2, adjustable pumps 3, 4 drive technological equipment 5, 6 actuator stroke, side gears 7, 8 of the drive stroke, the coupling device 9 with additional support wheel cylinders 10 and turn 11 and the rotary bracket 12.Side gears 7, 8, include wheel gear 13, which are the drive wheels 14, 15, a cylindrical gear 16 of the planetary gear 17 connected to the hydraulic motors of the drive train 18, 19 (construction side of the drive, see RF patent N 2045836).Coupling device 9 contains a housing 20 with grippers (not shown), koto wheel 10 has an actuator in the form of a hydraulic cylinder 23, and fastened to the supporting bracket 24, pivotally connected to the cylinders of rotation 11.The rotary bracket 12 includes driver seat 25 is fixed on a stand 26, a member of the hinge 27, the support platform 28 on which are fixed Hydrosol 29, the control unit 30, adjustable reversible pumps 5, 6 and the control unit 31 adjustable pumps 3, 4.In addition, the frame 28 is mounted pedal accelerator 32, connected in a known manner a flexible drive device (not shown) to the fuel pump of the engine 2.High-pressure hoses (the drawing shows part), connecting Hydrosol 29 with cylinders of rotation 11, the control units 30, 31 with adjustable pumps and flexible drive unit are inside the rack 26 and the hinge 27, the rotary bracket 12.On the frame 28 is mounted sensor 33 of the regulations of the rotary bracket 12 (driver's seat 25), for example, made in the form of a microswitch, which is triggered when the rotating bracket (seat) 180o.The control unit 30 is equipped with a foot pedal 34, tilting in one direction or another, the driver changes the direction of the module.Betelnut pump 3, as the handle 36 of the pump 4.Schematic hydraulic system of the power module shown in Fig. 5 and 6.The pump 37 through the suction filter delivers the working fluid from the tank 38 to gidrorul 29 and discharge lines 39 and 40 via a two-position valve 41 to the hydraulic cylinders of rotation 11. The pump 37 is protected from overload relief valve 42 connected to a common drain pipe 43.The feed pumps 44 and 45 controlled pumps 5 and 6, the working fluid is supplied through the intake filter 46 and the filter 37 through pipelines 47 and 48 and then through check valve 49 or 50 in the pressure 51 and 52 and the drain 53 and 54 of the pipelines of the hydraulic motors of the drive train 18 and 19. The valves 55 and 56 determine the pressure in the lines that feed pumps 5 and 6.Pressure pipes 51 and 52 connecting the pumps 5 and 6 with the hydraulic motors 18 and 19 are interconnected by a valve 57, made the dip and drain pipes 53 and 54 are connected in a similar dispenser 58.The working fluid from the tank 38 through the intake filter 59 and the filter clearance 60 is received by the pumps 3 and 4. Pumps 3 and 4 are protected from overload relief valve 61 and 62. In pressure truboprovodov technological equipment, or through the three-position valves 67 and 68 in the pressure or the discharge piping of the hydraulic motors 18 and 19.Operating channels 69 and 70 of the valves 67 and 68 are connected to a pressure piping 51 and 52 of the hydraulic motors 18 and 19, and the working channels 71 and 72 with drain pipes 53 and 54.In the pressure channels 73 and 74 of the valves 67 and 68, the working fluid flows from the United pipe 75 connected to a pressure piping 63 and 64 of the pumps 3 and 4. Drain channels 76 and 77 of the valves 67 and 68 of the joint pipe 78, which is provided with overflow valve 79 which supports the pressure in the drain pipe that is greater than the resistance in the suction lines of the pumps 5 and 6 (in the lines feeding these pumps). The pipe 78 through valve 79 is connected to the common return line 43.In the cylinder 23 of the drive wheels 10, the working fluid flows from the drain line 80 hydrurus 29 through the valve 81, 82 and locking valve cut the throttles with check valve 83.To the control units 30 and 31, the working fluid is supplied from pump 37 through the pressure reducing valve 84. In line control reversible pumps 5 and 6 from the control unit 30 is installed, the valve 85 is made of dvukhpozitsionnogo in Fig. 5 with the corresponding pipes of Fig. 6 denoted by C1...C7.The power module operates as follows.When the movement of the power module during insertion of technological equipment (the drawing shows only the node connection process equipment module) additional support wheel 10 is lowered onto the floor, as shown in Fig. 1 and the movement of the module is carried out, for example, in the direction of propulsion (forward).When moving the module operating direction reverse to the side of the coupling device (ago), driver seat rotated 180o, the support wheel is raised. The module has a second reference axis is the axis of the technological equipment (not shown. Cm. RF patent N 2042555).When driving module in the transport mode, the module is connected to the process equipment, the supporting wheel 10 is raised, the driver's seat 25 is installed, as shown in Fig. 1.The management module is as follows.The driver's foot rotates the pedal 34 of the control unit 30 in the direction of the arrow. While the pumps 5 and 6 begin feeding the working fluid to the hydraulic motors 18 and 19, through which the onboard reduc the driver must turn the pedal 34 in the direction of arrow G. Thus due to the reverse of the pumps 5 and 6, the hydraulic motor 18 and 19 change the direction of rotation is reversed.The transport speed of the module is ensured by using adjustable reversing pump 5 and 6, connected in a closed circuit with the motors 18 and 19 of the actuator stroke, and adjustable pumps 3 and 4, working on the open circuit. The use of pumps 3 and 4 is carried out after the corresponding enable two-position control valves 65 and 66 and the three-position control valves 67 and 68.To increase the transport speed of the module (frequency of rotation of the hydraulic motors 18 and 19), the driver control unit includes pumps 3 and 4 and in direct motion includes solenoids 86 and 87 of the valves 67 and 68, and during the reverse movement of the electromagnets 88 and 89.The working fluid from the pumps 3 and 4 through the outlet ports 73 and 74 of the valves 67 and 68 and the working channels 69 and 70 is fed to the pressure pipes 51 and 52 of the hydraulic motors 18 and 19.After the hydraulic motors 18 and 19, the working fluid flows into the drain (suction) piping 53, 54, from which a portion of the working fluid being sucked into the pumps 5 and 6 in accordance with the frequency of rotation, and the rest of the working fluid in the working valves 71 and astral 43. As the valve 79 is configured to pressure greater than the resistance to movement of fluid in the suction conduits 53 and 54 and the lines feeding the power to the pumps 5 and 6, the working fluid is provided.When you turn the electromagnets 88 and 89 functional significance of pipelines pumps 5 and 6 (hydraulic motors 18 and 19) is changed to the opposite.The movement of the module in the operating mode can be carried out as follows:
1. Small (creeping) working speed of the power module are provided as follows. The pumps 5 and 6 of the drive train are in the neutral position. The operation of the motors 18 and 19 are carried out by supplying working fluid thereto, for example, the pump 3. The pump 4 is enabled on the flow of operating fluid in the hydraulic system of technological equipment.In this case, the hydraulic motors 18 and 19 have a minimum speed.2. The rotation of the hydraulic motors 18 and 19 is the flow of operating fluid from the pumps 5 and 6. Speed module average. In this case, the drive process equipment can be used both pumps 3 and 4.3. The rotation of the hydraulic motors 18 and 19 may be performed by supplying the working fluid by the pumps 5 and 6 and the pump, for example, 3. We the management. It is provided that the rotary bracket 12 is mounted the driver's seat 25, Hydrosol 29, the control units 30 and 31 and the accelerator pedal 32. In addition, the sensor 33 of the regulations of the driver's seat (swivel bracket 12) when turning the seat 180oswitches on-off valves 41 and 85 and the valves 67 and 68. When you turn the electromagnets 88 and 89 the working fluid is supplied into the pipe 53 and 54, which are the pressure and movement of the machine is changed to the reverse movement of the driver in control of the machine after turning the seat does not change.During movement of the module on curved sections of the driving wheels have different speed. A different rate of rotation of the wheels is provided by the fact that the pressure head 51 and 52 and the drain 53 and 54 pipelines are connected in pairs on-off valves 57 and 58. Is the flow of the working fluid from the discharge pipe 51 at the discharge pipe 52 through the valve 57, or from the pipe 53 into the pipe 53 through the valve 58.When the contact module in difficult road conditions, the driver switches the valves 57 and 58 in another position. The pipes 51 and 52, 53 and 54 are separated. So-called CLASS="ptx2">The use of hydraulic power module of a closed circuit in the drive train of the machine, and its Association with the open scheme used in the drive process equipment, greatly expands the range of regulation of the transmission of the machine. This design solution has been made possible due to the fact that the drain pipe 78 was introduced relief valve 79.In addition, the reversing control module expanded technical capabilities of the machine to work with various technological equipment. Reversible control module was made possible thanks to the swivel bracket 12 have been posted by the control units 30 and 31 adjustable pumps, and control lines of the pumps 5 and 6 and in the pressure piping of the hydraulic cylinders 11 turns were installed valves 41 and 85.Sources of information
1. Paver pavements. RF patent N 2000379, BI N 33-36, 19932. Vehicle. RF patent N 2042555, B N 24, 1995 - the prototype. 1. The module power, primarily to work with the technology of road construction and agriculture equipment includes power unit with adjustable pump drive technological Oborony valves and pressure piping pumps, process equipment through the three-position valves, the control units are connected by lines to control with adjustable pump, final drive with hydraulic motors of the drive stroke, the coupling device with the supporting wheel and the cylinders rotate and swivel bracket from the driver's seat, characterized in that the pump actuator stroke is made reversible, line feed, pressure and drains the three-position valves are pairwise combined pressure and drain pipelines, while the outlet pipe is provided with overflow valve.2. Module p. 1, characterized in that the relief valve maintains the drain pipe pressure is greater than the resistance in the line feeding reversible pumps.3. Module p. 1, characterized in that the control line reverse pumps equipped with a dispenser made dip.4. Module p. 1, characterized in that the control units are mounted on the swivel bracket.5. Module p. 1, characterized in that the pressure pipes of cylinders rotation is supplied by a dispenser, made dip.
FIELD: transport engineering; self-propelled wheeled vehicles.
SUBSTANCE: proposed vehicle contains frame 1 with cab 9, front and rear steerable wheels 4, 6 and middle wheels 5, engine placed behind the cab along vehicle and covered by hood 11. hydrostatic transmission contains pumping station 21 consisting of matching reduction gear driven by engine placed behind the cab, and three pumps connected by pipelines with hydraulic motors providing separate drives of wheels. Hydraulic motors are arranged along frame 1 between sidemembers on solid brackets made in form of boxes with flanges connected with wall of side member between its webs. Invention makes it possible to create ecologically clean and reliable multipurpose all-wheel-drive vehicle of high cross-country capacity with hydrostatic transmission to drive all wheels.
EFFECT: provision of convenient mounting and servicing of transmission units.
5 cl, 7 dwg