High-pressure fuel injection pump testing device

Abstract

A high-pressure fuel injection pump testing device comprises a machine table, a motor capable of moving left and right is installed on the machine table, a supporting plate capable of being adjusted up and down is arranged on one side of the motor, a fuel injection pump is placed on the supporting plate, a pressing plate is arranged on the supporting plate, the fuel injection pump is pressed by the pressing plate, and a first connector is connected to a shaft extension of the motor. A first connector is connected to a cam shaft of the fuel injection pump, a second connector is connected to a cam shaft of the fuel injection pump, the first connector and the second connector are detachably connected, supporting baffles are connected to the two sides of the supporting plate, an adjusting base is connected to the supporting baffles, a thermosensitive probe and a displacement sensor are installed on the adjusting base, and the thermosensitive probe and the displacement sensor face the position of a plunger in the fuel injection pump. Compared with the prior art, according to the testing device for the high-pressure fuel injection pump, the fuel injection pump is quickly connected with the motor through the connector, the thermosensitive probe and the displacement sensor on the supporting plate are used for measuring temperature change and deformation and providing testing data, and support is provided for improvement of materials of a shell of the high-pressure fuel injection pump.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injection pumps, in particular to a high-pressure fuel injection pump testing device. Background Art

[0002] The high-pressure fuel injection pump is equipped with a camshaft, a tappet and a plunger. During the operation of the fuel injection pump, the camshaft pushes the plunger through the tappet, and the plunger moves at high speed to pump oil. During this process, the fuel injection pump housing will generate heat and even deform. Therefore, the faster the fuel injection pump housing dissipates heat, the smaller the deformation will be. The heat dissipation efficiency of the fuel injection pump housing is related to the housing material. Therefore, testing the temperature and deformation of the fuel injection pump housing during the manufacturing process will help improve the material. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-pressure fuel injection pump testing device in view of the deficiencies of the above-mentioned prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0005] A high-pressure fuel injection pump testing device comprises a machine platform, a motor which can be moved left and right is installed on the machine platform, a support plate which can be adjusted up and down is arranged on one side of the motor, a fuel injection pump is placed on the support plate, a pressure plate is arranged on the support plate, the pressure plate presses the fuel injection pump, a joint 1 is connected to the shaft extension of the motor, a joint 2 is connected to the camshaft of the fuel injection pump, the joint 1 and the joint 2 are detachably connected, support baffles are connected to the two sides of the support plate, an adjustment seat is connected to the support baffle, a thermal probe and a displacement sensor are installed on the adjustment seat, and the thermal probe and the displacement sensor face the position of the plunger in the fuel injection pump.

[0006] Furthermore, a guide rail is installed on the surface of the machine platform, a slider is arranged on the guide rail, a motor mounting plate is connected to the slider, and the motor is fixed on the motor mounting plate.

[0007] Furthermore, the connector 1 is connected to the shaft extension of the motor through a key block 1, and a connecting groove is processed on the connector 1. The connector 2 is connected to the camshaft of the injection pump through a key block 2, and a shaft head is provided on the connector 2, which is inserted into the connecting groove and locked by a screw.

[0008] Furthermore, the machine is provided with a plurality of adjusting screws, the adjusting screws pass through the support plate, and the adjusting screws are provided with adjusting nuts, which are located on the upper and lower sides of the support plate to lock the support plate.

[0009] Furthermore, a clamping screw is connected to the support plate, the upper end of the clamping screw passes through the pressure plate, one end of the pressure plate is supported by a pad, and the other end clamps the fuel injection pump. A clamping nut is connected to the clamping screw, and the clamping nut locks the pressure plate.

[0010] Furthermore, a sliding sleeve and a sensor mounting seat are respectively connected above the adjustment seat, a telescopic sleeve is arranged in the sliding sleeve, a thermistor is installed at the head of the telescopic sleeve, an annular baffle is arranged at the head of the telescopic sleeve, a spring is arranged between the baffle and the adjustment seat, the displacement sensor is installed on the sensor mounting seat, and the tail of the displacement sensor is locked by a sensor nut.

[0011] Furthermore, the adjustment seat is processed with a vertical waist-shaped groove connected to the support baffle, and the support baffle is processed with a horizontal waist-shaped groove connected to the support plate.

[0012] Compared with the prior art, the utility model provides a high-pressure fuel injection pump testing device, which quickly connects the fuel injection pump to the motor through a joint. The thermistor and displacement sensor on the support plate measure temperature changes and deformations, and provide test data to provide support for the improvement of the shell material of the high-pressure fuel injection pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0015] Figure 3 This is a schematic diagram of the structure of the installation of the thermal probe and the displacement sensor of the utility model;

[0016] Among them, 1. machine table, 2. guide rail, 3. motor mounting plate, 4. motor, 5. support plate, 6. fuel injection pump, 7. adjusting screw, 8. adjusting nut, 9. pressure plate, 10. clamping screw, 11. spacer, 12. clamping nut, 13. connector one, 14. connector two, 15. square connecting groove, 16. flat shaft head, 17. support baffle, 18. adjusting seat one, 19. adjusting seat two, 20. thermal probe, 21. displacement sensor, 22. sliding sleeve, 23. telescopic sleeve, 24. spring, 25. sensor mounting seat. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present utility model will be described clearly and completely below.

[0018] like Figure 1 to Figure 3As shown, a high-pressure fuel injection pump testing device includes a machine platform 1, a guide rail 2 is installed on the surface of the machine platform 1, a slider is arranged on the guide rail 2, a motor mounting plate 3 is connected to the slider, a motor 4 is installed on the motor mounting plate 3, the motor 4 slides left and right on the machine platform 1 through the guide rail 2, a support plate 5 that can be adjusted up and down is arranged on one side of the motor 4, a fuel injection pump 6 is placed on the support plate 5, wherein four adjusting screws 7 are symmetrically arranged on the machine platform 1, the adjusting screws 7 pass through the support plate 5, and the adjusting nuts 8 are arranged on the adjusting screws 7, and the adjusting nuts 8 is located on the upper and lower sides of the support plate. The position of the support plate 5 is adjusted so that the camshaft in the fuel injection pump and the shaft extension of the motor 4 are on the same horizontal mounting surface, and then the adjusting nut 8 is tightened to lock the support plate 5. A pressure plate 9 is provided on the support plate 5, and the pressure plate 9 presses the fuel injection pump 6. A clamping screw 10 is connected to the support plate 5, and the upper end of the clamping screw 10 passes through the pressure plate 9. One end of the pressure plate 9 is supported by a gasket 11, and the other end presses the fuel injection pump 6. A clamping nut 12 is connected to the clamping screw 10, and the clamping nut 12 is tightened to lock the pressure plate 11.

[0019] A connector 13 is connected to the shaft extension of the motor 4, and the connector 13 is sleeved on the shaft extension of the motor 4. The connector 13 is connected to the shaft extension of the motor through a key block 1. A connector 2 14 is connected to the camshaft of the fuel injection pump 6, and the connector 2 14 is sleeved on the camshaft of the fuel injection pump. The connector 2 is connected to the camshaft of the fuel injection pump through a key block 2. The connector 13 and the connector 2 14 are detachably connected, which is convenient for connecting the motor 4 to the fuel injection pump on the one hand, and convenient for replacing the connectors and testing fuel injection pumps of different models on the other hand. In this embodiment, a square connecting groove 15 is processed on the connector 13, and a flat shaft head 16 is provided on the connector 2 14. The flat shaft head 16 is snapped into the square connecting groove 15 and then locked by screws, so that the camshaft is driven during the driving process of the motor 4 to make the plunger in the fuel injection pump work.

[0020] Support baffles 17 are connected to both sides of the support plate 5, wherein an adjustment seat 18 is connected to the support baffle 17 on one side, and an adjustment seat 2 19 is connected to the support baffle 17 on the other side. A thermal probe 20 is installed on the adjustment seat 18, and a displacement sensor 21 is installed on the adjustment seat 2 19. The thermal probe 20 and the displacement sensor 21 are facing the plunger position in the fuel injection pump to test the temperature change and deformation of the fuel injection pump.

[0021] In this embodiment, a sliding sleeve 22 is connected above the adjustment seat 18, a telescopic sleeve 23 is arranged in the sliding sleeve 22, the thermal probe 20 is installed at the head of the telescopic sleeve 23, an annular baffle is arranged at the head of the telescopic sleeve 23, a spring 24 is arranged between the baffle and the adjustment seat 18, and the elastic force of the spring 24 is used to make the thermal probe 20 contact with the side of the fuel injection pump housing, a sensor mounting seat 25 is connected above the adjustment seat 2 19, and the displacement sensor 21 is installed on the sensor mounting seat 25, the tail of the displacement sensor 21 is locked by a sensor nut, and the head of the displacement sensor 21 fits the side of the fuel injection pump housing.

[0022] In order to make the thermal probe 20 and the displacement sensor 21 adapt to the test of injection pumps of different specifications, the adjustment seat 1 18 and the adjustment seat 2 19 are processed with vertical waist-shaped grooves connected to the support baffle 17, and the support baffle 17 is processed with a horizontal waist-shaped groove connected to the support plate 5. The vertical waist-shaped groove and the horizontal waist-shaped groove can be used to adjust the up and down and left and right positions of the thermal probe 20 and the displacement sensor 21.

[0023] The present invention is not limited to the described embodiments. Those skilled in the art may make some modifications or changes without departing from the spirit and scope of the present invention, that is, within the scope of disclosure. Therefore, the scope of protection of the present invention shall be subject to the scope defined in the claims.

Claims

1. A high-pressure fuel injection pump testing device, characterized in that: The machine platform comprises a motor which can move left and right, a support plate which can be adjusted up and down is arranged on one side of the motor, a fuel injection pump is placed on the support plate, a pressure plate is arranged on the support plate, the pressure plate presses the fuel injection pump, a joint 1 is connected to the shaft extension of the motor, a joint 2 is connected to the camshaft of the fuel injection pump, the joint 1 and the joint 2 are detachably connected, support baffles are connected to the two sides of the support plate, an adjustment seat is connected to the support baffle, a thermistor and a displacement sensor are installed on the adjustment seat, the thermistor and the displacement sensor are oriented toward the plunger position in the fuel injection pump.

2. A high pressure fuel injection pump testing device according to claim 1, characterized in that: A guide rail is installed on the surface of the machine platform, a slider is arranged on the guide rail, a motor mounting plate is connected to the slider, and the motor is fixed on the motor mounting plate.

3. A high pressure fuel injection pump testing device according to claim 1, characterized in that: The connector one is connected to the shaft extension of the motor through a key block one, and a connecting groove is processed on the connector one. The connector two is connected to the camshaft of the injection pump through a key block two, and a shaft head is arranged on the connector two, and the shaft head is inserted into the connecting groove and locked by a screw.

4. A high pressure fuel injection pump testing device according to claim 1, characterized in that: The machine platform is provided with a plurality of adjusting screws, the adjusting screws pass through the support plate, and the adjusting screws are provided with adjusting nuts, which are located on the upper and lower sides of the support plate to lock the support plate.

5. A high pressure fuel injection pump testing device according to claim 1, characterized in that: The support plate is connected with a clamping screw, the upper end of which passes through a pressure plate, one end of the pressure plate is supported by a cushion block, and the other end clamps the fuel injection pump. The clamping screw is connected with a clamping nut, which locks the pressure plate.

6. A high pressure fuel injection pump testing device according to claim 1, characterized in that: A sliding sleeve and a sensor mounting seat are respectively connected above the adjustment seat, a telescopic sleeve is arranged in the sliding sleeve, a thermal probe is installed on the head of the telescopic sleeve, an annular baffle is arranged on the head of the telescopic sleeve, a spring is arranged between the baffle and the adjustment seat, the displacement sensor is installed on the sensor mounting seat, and the tail of the displacement sensor is locked by a sensor nut.

7. A high pressure fuel injection pump testing device according to claim 1, characterized in that: The adjusting seat is processed with a vertical waist-shaped groove connected to the supporting baffle, and the supporting baffle is processed with a horizontal waist-shaped groove connected to the supporting plate.

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