CN211202265U

CN211202265U - Hydraulic test device for working pump of diesel engine

Info

Publication number: CN211202265U
Application number: CN201922377763.9U
Authority: CN
Inventors: 丁剑; 陈月生; 葛明生
Original assignee: JIANGSU SIDA POWER MECHANICAL GROUP CO Ltd
Current assignee: JIANGSU SIDA POWER MECHANICAL GROUP CO Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-07
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to a diesel engine working pump hydraulic test device, which comprises a frame, shelf location main oil tank and bellytank, bellytank one side sets up the radiator, radiator one end sets up the oil feed and connects and the oil return connects, the first port of oil return joint is connected with diesel engine working pump oil outlet, the oil return connects the second port through first oil pipe connection the radiator oil inlet, set up first oil return control valve in the first oil pipe, the radiator oil-out passes through second oil pipe and connects the bellytank oil inlet, the bellytank oil-out passes through third oil pipe and connects main oil tank second oil inlet, main oil tank oil outlet end passes through fourth oil pipe and connects the oil feed connects the oil inlet, set up pressure sensor, oil temperature sensor and second oil return control valve on the fifth oil pipe. The utility model discloses, simple structure, in the engine test process, can regulate and control the temperature of oil circuit, pressure isoparametric makes the test result practicality high.

Description

Hydraulic test device for working pump of diesel engine

Technical Field

The utility model belongs to the technical field of the diesel engine hydraulic pressure, a diesel engine working pump hydraulic test device is related to.

Background

With the continuous improvement of the agricultural mechanization degree, the market reserves of agricultural tractors are continuously improved, and the requirements on the manufacturing level and the reliability of a diesel engine are higher and higher. The constant flow pump and the gear pump for the tractor are arranged on the diesel engine and are driven by gears, and because the load cannot be added when the diesel engine is manufactured and leaves a factory, whether faults exist or not and the influence on the reliability of the diesel engine cannot be judged.

The constant flow pump provides steering power for the tractor, and the gear pump provides power for the tractor hydraulic system. Taking a gear pump as an example, the flow rate is as follows: 16ml/r, pressure: 20MPa, 3000r/min of rotating speed and 85 percent of mechanical efficiency, and the input power required by the gear pump during full-load work reaches 17.8kW, so that the large power requirement is a great test for the performance and reliability of the diesel engine.

According to the current situation of the tractor, the mounting structure of the constant flow pump and the gear pump provides power by gear transmission, and the steering of the tractor and the burden of a moving part system of a hydraulic system are greatly increased. Because the pump is installed by a tractor factory, the influence of the pump on an engine is often ignored in the development of a diesel engine factory, and the failure rate of the diesel engine is increased.

Disclosure of Invention

An object of the utility model is to provide a diesel engine working pump hydraulic test device can solve the problem that constant flow pump and gear pump do not detect, and easy operation is convenient, through the required input power of control return pressure size simulation gear pump.

According to the utility model provides a technical scheme: the hydraulic test device for the working pump of the diesel engine comprises a frame, wherein a main oil tank and an auxiliary oil tank are arranged on the frame, a radiator is arranged on one side of the auxiliary oil tank, one end of the radiator is provided with an oil inlet joint and an oil return joint, the oil return joint is of a three-way structure, a first port of the oil return joint is connected with an oil outlet of the working pump of the diesel engine, a second port of the oil return joint is connected with an oil inlet of the radiator through a first oil pipe, a first oil return control valve is arranged in the first oil pipe, an oil outlet of the radiator is connected with the oil inlet of the auxiliary oil tank through a second oil pipe, an oil outlet of the auxiliary oil tank is connected with a second oil inlet of the main oil tank through a third oil pipe, an oil outlet end of the main oil tank is connected with the oil inlet of the oil inlet joint through a fourth oil pipe, a third port, An oil temperature sensor and a second oil return control valve.

As a further improvement of the utility model, pulleys are arranged at four corners of the bottom of the frame.

As a further improvement, the radiator is an air-cooled radiator.

As a further improvement of the utility model, a handle is arranged on the frame.

As a further improvement, the main oil tank is provided with an oil filler cover.

As a further improvement of the utility model, the oil drain bolt is installed at the bottom of the main oil tank.

Compared with the prior art, the utility model, have following advantage:

1. the utility model has simple structure and small occupied space; the operation is simple and convenient, and the input power required by the gear pump is simulated by controlling the size of the oil return pressure.

2. The utility model discloses save test cost, the whole car operating condition can be simulated to the application this test device, avoids the huge expense that the experiment caused on the tractor for a long time.

3. The utility model discloses shorten test time, utilize the device can verify the reliability of each spare part of engine fast and improve the feasibility of part.

4. The utility model discloses in time in the engine test process, can regulate and control the temperature of oil circuit, pressure isoparametric makes the test result practicality high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a side view of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings.

In fig. 1-3, the oil-saving device comprises an oil drain bolt 1, a pulley 2, an oil inlet joint 3, an oil return joint 4, a first oil return control valve 5, a radiator 6, a second oil return control valve 7, an oil temperature sensor 8, an oil filler cap 9, an auxiliary oil tank 10, a pressure sensor 11, a handle 12, a frame 13, a bottom plate 13-1, a main oil tank 14 and the like.

As shown in figures 1-3, the utility model relates to a diesel engine working pump hydraulic test device, including frame 13, frame 13 includes bottom plate 13-1, and bottom plate 13-1 bottom four corners sets up pulley 2, is convenient for the removal of device.

A main oil tank 14 is mounted on a bottom plate 13-1, an auxiliary oil tank 10 is arranged above the main oil tank 14, a radiator 6 is arranged on one side of the auxiliary oil tank 10, an oil inlet joint 3 and an oil return joint 4 are arranged at one end of the radiator 6, the oil return joint 4 is of a three-way structure, a first port of the oil return joint 4 is connected with an oil outlet of a working pump of the diesel engine, a second port of the oil return joint 4 is connected with an oil inlet of the radiator 6 through a first oil pipe, a first oil return control valve 5 is arranged in the first oil pipe, and the first oil return control valve 5 can regulate and control the flow entering the. An oil outlet of the radiator 6 is connected with an oil inlet of the auxiliary oil tank 10 through a second oil pipe, and an oil outlet of the auxiliary oil tank 10 is connected with a second oil inlet of the main oil tank 14 through a third oil pipe.

The oil outlet end of the main oil tank 14 is connected with the oil inlet of the oil inlet joint 3 through a fourth oil pipe. An oil filler cover 9 is arranged on the main oil tank 14, and an oil drainage bolt 1 is arranged at the bottom of the main oil tank 14 and used for draining oil for the device.

And a third port of the oil return joint 4 is connected with a first oil inlet of the main oil tank 14 through a fifth oil pipe. And a pressure sensor 11, an oil temperature sensor 8 and a second oil return control valve 7 are sequentially arranged on the fifth oil pipe. The second oil return control valve 7 is used for regulating and controlling oil return amount of an oil way, the pressure sensor 11 is used for reflecting pressure in the oil way, and the oil temperature sensor 8 can be used for monitoring temperature during testing.

The radiator 6 is an air-cooled radiator.

A handle 12 is mounted on the frame 13 to facilitate operator control of the direction of movement.

The working process of the utility model is as follows:

hydraulic oil of a working pump of the diesel engine enters from the oil return joint 4 and is divided into two parts, and one part flows into the main oil tank 14 through the auxiliary oil tank 10 after being controlled by the first oil return control valve 5 and radiated by the radiator 6. The other flow is regulated and controlled by the second oil return control valve 7 and flows into a main oil tank 14 after passing through a pressure sensor 11 and an oil temperature sensor 8. The hydraulic oil in the main oil tank 14 flows into the oil inlet of the working pump of the diesel engine through the oil inlet joint 3.

Claims

1. The utility model provides a diesel engine working pump hydraulic test device which characterized in that: the device comprises a frame (13), a main oil tank (14) and an auxiliary oil tank (10) are installed on the frame (13), a radiator (6) is arranged on one side of the auxiliary oil tank (10), an oil inlet joint (3) and an oil return joint (4) are arranged at one end of the radiator (6), the oil return joint (4) is of a three-way structure, a first port of the oil return joint (4) is connected with an oil outlet of a working pump of the diesel engine, a second port of the oil return joint (4) is connected with an oil inlet of the radiator (6) through a first oil pipe, a first oil return control valve (5) is arranged in the first oil pipe, an oil outlet of the radiator (6) is connected with an oil inlet of the auxiliary oil tank (10) through a second oil pipe, an oil outlet of the auxiliary oil tank (10) is connected with a second oil inlet of the main oil tank (14) through a third oil pipe, an oil outlet end of the main oil tank (, and a third port of the oil return joint (4) is connected with a first oil inlet of the main oil tank (14) through a fifth oil pipe, and the fifth oil pipe is provided with a pressure sensor (11), an oil temperature sensor (8) and a second oil return control valve (7).

2. The diesel engine working pump hydraulic test device of claim 1, characterized in that: and pulleys (2) are arranged at four corners of the bottom of the frame (13).

3. The diesel engine working pump hydraulic test device of claim 1, characterized in that: the radiator (6) is an air-cooled radiator.

4. The diesel engine working pump hydraulic test device of claim 1, characterized in that: the frame (13) is provided with a handle (12).

5. The diesel engine working pump hydraulic test device of claim 1, characterized in that: and the main oil tank (14) is provided with an oil filler cover (9).

6. The diesel engine working pump hydraulic test device of claim 1, characterized in that: and an oil drainage bolt (1) is arranged at the bottom of the main oil tank (14).