CN201842043U

CN201842043U - Hydraulic drive system for a vehicle

Info

Publication number: CN201842043U
Application number: CN201020276621XU
Authority: CN
Inventors: 刘伟; 邵谱; 吴东; 龚远红
Original assignee: SPECIAL VEHICLE TECHNOLOGY CENTER OF CHINA SANJIANG SPACE ESTATE GROUP
Current assignee: SPECIAL VEHICLE TECHNOLOGY CENTER OF CHINA SANJIANG SPACE ESTATE GROUP
Priority date: 2010-07-30
Filing date: 2010-07-30
Publication date: 2011-05-25
Anticipated expiration: 2020-07-30

Abstract

The utility model relates to a versatile hydraulic drive system for a vehicle. The force is provided by a single force taking port of an engine to drive a twin pump and a front pump of the twin pump outputs the high-pressure oil to drive a fan motor of a heat radiator and the rotation of the fan is driven to provide the cooling wind; a rear pump of the twin pump outputs the high-pressure oil to drive an air-condition motor and the operation of an air-condition compressor and adjust the temperature in a navigation room. A load-removal overflow valve set is respectively arranged on the oil output pipelines of the front, rear pumps of the twin pump and a system maximum pressure is controlled in the proper range. The versatile hydraulic drive system mainly solves the problem that the accessories arrangement is difficult due to reservation of multi force taking ports on the engine; the structure is complicated and the maintenance is difficult due to the separation arrangement of the multi hydraulic drive systems. The successive application of the versatile hydraulic drive system effectively simplifies the engine structure thus the number of the accessories of the engine driven hydraulic system is least and the whole vehicle arranged is more convenient.

Description

A kind of automobile-used fluid power system

Technical field

The utility model relates to automobile-used high-mobility, multipurpose, wheeled vehicle fluid power system.

Background technology

Common goods carrying vehicle generally adopts engine power to drive radiator fan, air-conditioning compressor, Air compressor, steering pump etc., adopting more form at present is engine crankshaft independent drive fan, adopt the belt form to drive air-conditioning compressor, the power taking mouth is set drives Air compressor, steering pump etc., cause driving engine need reserve a plurality of power taking mouths, make on the one hand the complex structure of driving engine, limited the position of above-mentioned annex on the other hand, can not adapt to the changeable use needs of the overall flexible arrangement of vehicle, engine at extreme rear for example, when radiator and driving engine split are arranged, brought radiator fan, the drive arrangement difficulty of annexes such as air-conditioning compressor, therefore design a kind of multiduty fluid power system, simplified structure is so that general layout is very necessary.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of multiduty fluid power system, solves available engine and reserves the engine structure complexity that a plurality of power taking mouths cause and the problem of annex difficult arrangement.

For solving the problems of the technologies described above, the utility model provides a kind of multiduty fluid power system, provide the power driven twin pump by the single power taking mouth of driving engine, front pump output high pressure oil drives the radiator fan motor in the twin pump, and the drive fan rotates to be radiator provides cooling air; Back pump output high pressure oil drives the air-conditioning motor, drives air-conditioning compressor work, regulates and drives indoor environment temperature.

Further improved; the forward and backward oil pump outlet line Lu Shangjun of twin pump is provided with the unloading overflow valve group, and the control system top pressure guarantees that in OK range pressure can not continue to raise with the engine speed rising; prevent the motor overload operation and cause damage, with protection fan motor and air-conditioning motor.

As optimization, whole fluid power system hydraulic oil system and the shared hydraulic reservoir of steering swivel system, hydraulic oil produces heat in the total system driving process, and too high for preventing the oil temperature, hydraulic reservoir is provided with cooling vessel, and effectively control oil temperature is in OK range.

This actuating device can drive other annexes such as Air compressor, steering pump as required, and twin pump two pump capacitys can be according to the operating needs combination in any, and unloading overflow valve group pressure regulation separately simultaneously according to different usage conditions and system, is adjusted the pressure unloading value.In addition, this actuating device can be expanded and apply to other system.

Its major technique advantage comprises:

1) drives twin pump by single power taking mouth outputting power, make driving engine and subsystem more compact structure;

2) twin pump drives radiator fan motor and air-conditioning motor simultaneously, simplifies whole fluid power system;

3) unloading overflow valve group pressure regulation respectively, two hydraulic efficiency pressure systems are not disturbed mutually.

The utility model emphasis has solved driving engine and has reserved the annex difficult arrangement problem that a plurality of power taking mouths cause, complex structure that many fluid power systems apart arrangement is brought and maintenance difficult problem, its successful Application, the effective simplification engine structure, make each annex minimum number of engine drive hydraulic efficiency pressure system, the car load general layout of being more convenient for, also simplified simultaneously fluid power system, it is minimum that the fluid power system trouble point is dropped to, can carry out localization of fault more rapidly when keeping in repair afterwards, reduce maintenance time greatly, increase work efficiency, improved reliability of products.

Description of drawings

Below in conjunction with the drawings and specific embodiments the technical solution of the utility model is further described in detail.

Fig. 1 is automobile-used high-mobility, multipurpose, wheeled vehicle fluid power system schematic diagram.

1 twin pump, 2 air-conditioning compressor motors, 3 radiator fan motors, 4 unloading overflow valve groups, 5 cooling vessels, 6 hydraulic reservoirs.

The specific embodiment

As shown in Figure 1, the single power taking mouth of driving engine provides power driven twin pump 1, the front pump output high pressure oil of twin pump 1 drives radiator fan motor 3, the back pump of twin pump 1 drives air-conditioning compressor motor 2, raise with engine speed, twin pump 1 output high pressure oil pressure raises, while air-conditioning compressor motor 2, radiator fan motor 3 rotating speeds raise, for preventing air-conditioning compressor motor 2, radiator fan motor 3 rotating speeds are too high and damage, the front and back pump high pressure hydraulic fluid port of twin pump 1 all connects unloading overflow valve group 4, with air-conditioning compressor motor 2, radiator fan motor 3 top pressures are limited in OK range, guarantee air-conditioning compressor motor 2, radiator fan motor 3 rotating speeds can not raise with engine speed and continue to raise.The shared hydraulic reservoir 6 of whole fluid power system hydraulic oil and steering swivel system, hydraulic oil produces heat in the total system driving process, and too high for preventing the oil temperature, system is provided with cooling vessel 5, and effectively control oil temperature is in OK range.

The utility model is applied to the airport crash fire vehicle chassis, at first adjust according to heat-sinking capability and air conditioner refrigerating ability, selected DRIVEN BY AIR CONDITIONING COMPRESSOR motor and radiator fan CD-ROM drive motor discharge capacity, choose the front pump and the back pump combination twin pump of suitable discharge capacity according to result of calculation, twin pump output high pressure oil top pressure when system pressure and engine speed are the highest when needing to contrast DRIVEN BY AIR CONDITIONING COMPRESSOR motor and radiator fan CD-ROM drive motor simultaneously and reaching maximum speed of revolution, unloading overflow valve group pressure unloading value is set, front and back pump output high pressure oil top pressure value is limited respectively, guarantee that drive motor of compressor and fans drive motor rotary speed can be not too high and cause damaging.

It should be noted last that, the above specific embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. an automobile-used fluid power system is characterized in that, provides the power driven twin pump by the single power taking mouth of driving engine, and front pump output high pressure oil drives the radiator fan motor in the twin pump; Back pump output high pressure oil drives the air-conditioning motor, drives air-conditioning compressor work.

2. automobile-used fluid power system according to claim 1; it is characterized in that; the forward and backward oil pump outlet line Lu Shangjun of described twin pump is provided with the unloading overflow valve group; the control system top pressure is in OK range; guarantee that pressure can not continue to raise with the engine speed rising; prevent the motor overload operation and cause damage, with protection fan motor and air-conditioning motor.

3. automobile-used fluid power system according to claim 1 and 2 is characterized in that, the shared hydraulic reservoir of the hydraulic oil system of described fluid power system and steering swivel system.

4. automobile-used fluid power system according to claim 3 is characterized in that, on the described hydraulic reservoir cooling vessel is set.