CN201106586Y

CN201106586Y - Oil source system assembly for hydraulic actuator

Info

Publication number: CN201106586Y
Application number: CNU2007201742019U
Authority: CN
Inventors: 胡霞
Original assignee: Guizhou Honglin Machinery Co Ltd
Current assignee: Guizhou Honglin Machinery Co Ltd
Priority date: 2007-11-05
Filing date: 2007-11-05
Publication date: 2008-08-27
Anticipated expiration: 2017-11-05

Abstract

The utility model relates to an oil source system assembly used for a hydraulic actuator, and belongs to an oil source system of the hydraulic actuator. A motor (1) is mutually connected with a gear pump (4) through a resilient coupling, and a retaining valve (12) is arranged in an installation hole of an oil source installation block (3) and is respectively connected with a buffer cavity (9) and an accumulator (11) through oil ways. The oil ways after passing through the retaining valve (12) are provided with a temperature sensor (10), an overflow valve (16), and a pressure sensor (13). The accumulator (11) is communicated with the oil ways in the oil source installation block (3) through a high-pressure oil tube (14), the buffer cavity (9) and a high pressure oil screen (15) are arranged between an oil outlet (8) of the gear pump and the retaining valve (12), an oil return pipe (5) is arranged on the oil source installation block, the outlet of the oil return pipe deeply penetrates an oil tank (7), and a clapboard (6) is arranged in the oil tank. The oil source system assembly has the functions that the motor in the oil source system assembly drives the gear pump to change oil in the oil tank into pressure oil through the retaining valve for injecting the hydraulic actuator according to the work requirement of an actuating part in the hydraulic actuator, so the work requirement of the hydraulic actuator is realized, and the assembly is applicable to the hydraulic actuator of a car.

Description

A kind of oil supply system assembly that is used for hydraulic actuator

Technical field: the utility model relates to the hydraulic actuator oil supply system, particularly a kind of oil supply system assembly that is used for hydraulic actuator.

Background technique: motor adopts rigidity to be connected with the connection of gear pump in common oil supply system, and position of mounting hole requires tight, and technology capability is poor, and is serious to the damage of gear pump when high pressure uses.Not nationwide examination for graduation qualification filter electric motor starting moment in common oil supply system, because cavity volume is too little between gear pump and the one-way valve, thereby the instantaneous pressure that causes impacts the wearing and tearing to gear pump.Do not have high pressure oil filter structure in common oil supply system, the turbidity test of system can not effectively guarantee.Not nationwide examination for graduation qualification filter high pressure oil transfers low pressure oil to and flows back to the influence to gear pump oil suction efficient of the bubble that produces in the fuel tank process in common oil supply system.

Summary of the invention: the purpose of this utility model is to provide a kind of oil supply system assembly that is used for hydraulic actuator, and this oil supply system processing cost is low, reduces the machining accuracy of processing technology difficulty and part, improves reliability of products.

Formation of the present utility model: by motor, elastic coupling flexible coupling, gear pump, return tube, dividing plate, fuel tank, accumulator, one-way valve, the high pressure oil filter, the oil sources mounting blocks, relief valve, pressure transducer and temperature transducer are formed, motor 1 and gear pump 4 are installed on the oil sources mounting blocks 3, interconnect by elastic coupling flexible coupling 2, one-way valve 12 is installed in oil sources mounting blocks 3 mounting holes, be connected with accumulator 11 with buffer volume 9 respectively by oil circuit, through mounting temperature sensor 10 on the oil circuit behind the one-way valve 12, relief valve 16, pressure transducer 13, these parts all are installed in the oil sources mounting blocks 3 corresponding mounting holes, and accumulator 11 is communicated with oil circuit in the oil sources mounting blocks 3 by high-pressure oil pipe 14; Buffer volume 9 and high pressure oil filter 15 is arranged between gear pump oil outlet 8 and one-way valve 12, high pressure oil filter one-way valve 17 is set in high pressure oil filter import, install back oil pipe 5 on oil sources mounting blocks 3, the outlet of return tube is goed deep in the fuel tank 7, and fuel tank internal is provided with dividing plate 6.

Compared with the prior art, the utility model coupling adopts elastic coupling flexible coupling, reduces the processing cost of part, improve the working life of part, in this oil supply system assembly, increase the buffer volume structure, reduced the hydraulic shock that motor and gear pump bear, improved the working life of part; Increased high pressure oil filter structure, system's turbidity test have been improved greatly, guaranteed the functional reliability of actuator, increased the high pressure oil filter on the buffer volume position, filter precision is at 30 μ m, and is provided with one-way valve in an import, the restriction cavity volume produces high pressure, damage gear pump, prevented that effectively the wear and tear impurity that gets off and gear pump import oil of gear pump gear from filtering the not high impurity that flows to gear pump of filter precision and enter system and cause pollution to control valve, improved reliability of products.In system, increased return line structure, can suppress the bubble generation and prevent that bubble from entering the gear pump entry zone, guaranteed the volumetric efficiency of gear pump; Fuel tank adopts the dividing plate partitioned organization, will inhale, oil extraction separates; The dividing plate height is set to 3/4 of liquid level height, is used for contamination precipitation and circulating heat conduction; Two structures are used in combination, and have effectively controlled the turbidity test and the bubbles volume of gear pump inlet fluid, have improved the product functional reliability.

Description of drawings: Fig. 1 is the utility model structural representation, and Fig. 2 is the plan view of Fig. 1, and Fig. 3 is the H-H sectional view of Fig. 1.

1. motors among the figure, 2. elastic coupling flexible coupling, 3. oil sources mounting blocks, 4. gear pump, 5. return tube, 6. dividing plate, 7. fuel tank, 8. gear pump oil outlet, 9. buffer volume, 10. temperature transducer, 11. accumulators, 12. one-way valves, 13. pressure transducer, 14. high-pressure oil pipes, the filter of 15. high pressure oils, 16. relief valve, 17. high pressure oils filter one-way valve.

Embodiment: as Fig. 1, Fig. 2, shown in Figure 3, motor 1 and gear pump 4 are installed on the oil sources mounting blocks 3, interconnect by elastic coupling flexible coupling 2, one-way valve 12 is installed in oil sources mounting blocks 3 mounting holes, be connected with accumulator 11 with buffer volume 9 respectively by oil circuit, through mounting temperature sensor 10, relief valve 16, pressure transducer 13 on the oil circuit behind the one-way valve 12, these parts all are installed in the oil sources mounting blocks 3 corresponding mounting holes, and accumulator 11 is communicated with oil circuit in the oil sources mounting blocks 3 by high-pressure oil pipe 14; Buffer volume 9 and high pressure oil filter 15 is arranged between gear pump oil outlet 8 and one-way valve 12, high pressure oil filter one-way valve 17 is set in high pressure oil filter import, install back oil pipe 5 on oil sources mounting blocks 3, the outlet of return tube is goed deep in the fuel tank 7, and fuel tank internal is provided with dividing plate 6.

Its function is according to power unit need of work in the hydraulic mechanism, by motor driven gear pump in the oil supply system assembly oil in the fuel tank is become pressure oil by one-way valve and injects hydraulic actuator, realizes the need of work of actuator.

Working principle: gear pump 4 pumps into oil circuit at the hydraulic oil of 7 li of the following fuel tanks of the drive of direct current generator 1, through one-way valve 12, one the tunnel sends into pressure oil in the hydraulic actuator, another road is stored in the accumulator 11 unnecessary pressure oil standby, pressure transducer 13 is experienced system pressure, and pressure signal is fed back to the ECU control unit, when system pressure during greater than set upper limit pressure, ECU control motor shuts down, and system is provided by accumulator with oil; When system pressure is lower than the regulation threshold pression, the entry into service of ECU control motor, the driven gear pump is to systems pumps oil.Engine gear pump is interrupter duty, and the length of operating time changes according to the hydraulic actuator frequency of utilization, the saving system energy that can try one's best like this; 16 pairs of system pressures of relief valve play stable protective action.

Claims

1. oil supply system assembly that is used for hydraulic actuator, by motor, elastic coupling flexible coupling, gear pump, return tube, dividing plate, fuel tank, accumulator, one-way valve, the high pressure oil filter, the oil sources mounting blocks, relief valve, pressure transducer and temperature transducer are formed, it is characterized in that: motor (1) and gear pump (4) are installed on the oil sources mounting blocks (3), interconnect by elastic coupling flexible coupling (2), one-way valve (12) is installed in oil sources mounting blocks (3) mounting hole, be connected with accumulator (11) with buffer volume (9) respectively by oil circuit, through mounting temperature sensor (10) on the oil circuit behind the one-way valve (12), relief valve (16), pressure transducer (13), these parts all are installed in the corresponding mounting hole of oil sources mounting blocks (3), and accumulator (11) is communicated with oil circuit in the oil sources mounting blocks (3) by high-pressure oil pipe (14); Buffer volume (9) and high pressure oil filter (15) is arranged between gear pump oil outlet (8) and one-way valve (12), high pressure oil filter one-way valve (17) is set in high pressure oil filter import, on oil sources mounting blocks (3), install back oil pipe (5), the outlet of return tube is goed deep in the fuel tank (7), and fuel tank internal is provided with dividing plate (6).