Oil nozzle sealing test bench

Abstract

The utility model discloses an oil nozzle sealing test bench, which belongs to the technical field of oil nozzle processing and comprises a rack, an air cylinder is fixedly mounted on the upper surface of the rack, a mounting rack is fixedly mounted at the end of a piston rod of the air cylinder, the mounting rack is provided with a plurality of protruding ends, and supporting plates are fixedly mounted at the positions of the protruding ends; an air cylinder is arranged to be matched with a mounting frame for use, the mounting frame is matched with a plurality of supporting plates and a water storage tank for use, an oil nozzle penetrates through two oil nozzle placing rings on the supporting plates and is matched with an extrusion bolt to achieve locking, and the air cylinder drives the mounting frame and the supporting plates to drive the fixed oil nozzle to move up and down; the oil nozzle workpieces are communicated with the first telescopic hose and the second telescopic hose through the sealing connecting plugs and used in cooperation with an air pump, simultaneous detection of multiple oil nozzle workpieces is achieved, multiple oil nozzle workpieces can be detected at a time, efficiency is high, the oil nozzles in detection can be fixed, accidental movement is prevented, and the detection operation precision is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel injection nozzle processing, and in particular relates to a fuel injection nozzle sealing test bench. Background Art

[0002] The fuel injector used in automobiles is actually a simple solenoid valve. When the electromagnetic coil is energized, suction is generated, the needle valve is sucked up, the spray hole is opened, and the fuel is sprayed out at high speed through the annular gap between the needle at the head of the needle valve and the spray hole, forming a mist, which is conducive to full combustion. In the past, the fuel injector used in diesel engines was mechanically controlled. The mechanical diesel nozzle works by controlling precision parts. The nozzle part is one of the three major precision parts of traditional diesel engines. The three major precision parts are: plunger, plunger sleeve, needle valve, needle valve body, oil outlet valve, and oil outlet valve seat. The gasoline engine nozzle is part of the gasoline engine electronic control system, replacing the carburetor of the carburetor gasoline engine.

[0003] During the production and processing of fuel injectors, multiple tests need to be carried out, among which sealing test is indispensable. The purpose of sealing test is to ensure the normal operation of the fuel injectors without leakage. The usual test is carried out using water. The existing sealing detection device can only detect one fuel injector at a time, and the detection efficiency is low. Moreover, during the test, the workpiece to be tested is directly placed in the water storage tank, which will cause the workpiece to be tested to move during ventilation, thereby causing water flow disturbance and making it difficult to distinguish whether there is a leak or not. The detection accuracy is low. Utility Model Content

[0004] The purpose of the utility model is to provide a fuel injector sealing test bench to solve the problem that the existing sealing detection device proposed in the above background technology can only detect one fuel injector at a time, the detection efficiency is low, and during the detection, the workpiece to be detected is directly placed in a water storage tank, which will cause the workpiece to be detected to move during ventilation, thereby causing water flow disturbance and making it difficult to distinguish whether there is a leak or not, and the detection accuracy is low.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fuel injector sealing test bench, comprising a stand, a cylinder is fixedly mounted on the upper surface of the stand, a mounting frame is fixedly mounted on the end of the piston rod of the cylinder, the mounting frame has a plurality of protruding ends and a support plate is fixedly mounted at the position of the protruding ends, an adjustment mechanism is provided on the support plate and two fuel injector placement rings are provided through the adjustment mechanism, two fixed sleeves are fixedly mounted on both sides of the lower surface of the support plate, a telescopic hose 1 and a telescopic hose 2 are movably penetrated on the two fixed sleeves, a sealing plug joint is fixedly mounted on the opposite ends of the telescopic hose 1 and the telescopic hose 2, an air pump is fixedly mounted on the stand, an air outlet of the air pump is connected to four telescopic hoses 1, and a plurality of water storage tanks are fixedly mounted on the surface of the stand.

[0006] The above scheme is adopted, by setting a cylinder to be used in conjunction with a mounting frame, and the mounting frame is used in conjunction with multiple support plates and water tanks. The fuel injector passes through two fuel injector placement rings on the support plate and is locked in conjunction with extrusion bolts. The cylinder drives the mounting frame and the support plate to drive the fixed fuel injector to move up and down. The fuel injector workpiece is connected to telescopic hose one and telescopic hose two through a sealing plug joint and is used in conjunction with an air pump to achieve simultaneous inspection of multiple fuel injector workpieces. Multiple workpieces can be inspected at one time with high efficiency, and the fuel injectors being inspected can be fixed to prevent accidental movement, effectively improving the accuracy of the inspection operation. By setting an adjustment mechanism, the position of the two fuel injector placement rings can be adjusted. It is suitable for inspection operations of fuel injector workpieces of different specifications and lengths, thereby improving universality.

[0007] In the above solution, it should be noted that the cylinder, the motor and the air pump are all electrically connected to an external power source.

[0008] As a preferred embodiment, a plurality of guide rods 1 are fixedly mounted on the upper surface of the stand, and the mounting frame is slidably mounted on the outer surfaces of the plurality of guide rods 1.

[0009] With the above solution, when the cylinder piston rod is extended and retracted to drive the mounting frame to move up and down, the mounting frame slides on a surface of the guide rod, thereby ensuring good stability of the mounting frame's up and down movement.

[0010] As a preferred embodiment, the adjusting mechanism includes two fixed plates fixedly mounted on the upper surface of the support plate, a rotating shaft is rotatably mounted on the fixed plate, a bidirectional lead screw is fixedly mounted between the two rotating shafts, a motor is fixedly mounted on the upper surface of the support plate, the output shaft of the motor is fixedly connected to the rotating shaft at the corresponding position, threaded plates are threadedly mounted on the two sections of the threaded outer surfaces of the bidirectional lead screw, the threaded plate passes through a channel opened on the upper surface of the support plate and is fixedly connected to the injector placement ring at the same side position.

[0011] By adopting the above scheme, a motor is used to drive the rotating shaft to rotate, and the rotating shaft drives the bidirectional lead screw to rotate, thereby driving the two fuel injector placement rings to move relative to each other, which is suitable for detecting fuel injectors of different specifications and lengths.

[0012] As a preferred implementation, a plurality of guide rods 2 are fixedly mounted between the two fixing plates, and the threaded plate is slidably mounted on the outer surfaces of the plurality of guide rods 2.

[0013] By adopting the above scheme, the threaded plate will slide on the surface of the second guide rod when it moves under the rotation of the bidirectional lead screw, and then the second guide rod will be used to achieve a good supporting and guiding effect.

[0014] As a preferred embodiment, a squeeze bolt is threadedly mounted on the lower surface of the injector placement ring, and the tail end of the squeeze bolt extends to the interior of the injector placement ring.

[0015] By adopting the above scheme, the fuel injector inserted into the fuel injector placement ring can be squeezed and fixed by utilizing the setting of the squeezing bolt, and the fixing effect is good.

[0016] As a preferred implementation, the plurality of water storage tanks and the plurality of support plates are arranged relatively one above the other.

[0017] By adopting the above solution, the upper and lower opposing support plates and water storage tanks are used in combination, which can ensure that when the support plate moves downward, it will drive the fuel injection nozzle into the water storage tank.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The fuel injector sealing test bench is used by arranging a cylinder to cooperate with a mounting frame, and the mounting frame is used in conjunction with multiple support plates and a water tank. The fuel injector passes through two fuel injector placement rings on the support plate and is locked in conjunction with an extrusion bolt. The cylinder drives the mounting frame and the support plate to drive the fixed fuel injector to move up and down. The fuel injector workpiece is connected to the telescopic hose 1 and the telescopic hose 2 through a sealing plug joint, and is used in conjunction with an air pump to achieve simultaneous detection of multiple fuel injector workpieces, and multiple can be detected at one time, which is highly efficient. The fuel injector under detection can be fixed to prevent accidental movement, and the detection accuracy can be effectively improved.

[0020] The fuel injector sealing test bench is equipped with an adjustment mechanism to adjust the positions of the two fuel injector placement rings. It is suitable for the inspection of fuel injector workpieces of different specifications and lengths, thus improving its universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the support plate, the telescopic hose 1 and the telescopic hose 2 of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the support plate of the utility model.

[0024] In the figure: 1. stand; 2. cylinder; 3. mounting frame; 4. support plate; 5. injector nozzle placement ring; 6. fixing ring; 7. telescopic hose 1; 8. telescopic hose 2; 9. sealing plug joint; 10. air pump; 11. water storage tank; 12. guide rod 1; 13. fixing plate; 14. rotating shaft; 15. motor; 16. bidirectional screw; 17. threaded plate; 18. guide rod 2; 19. extrusion bolt. DETAILED DESCRIPTION

[0025] See also Figure 1-3The utility model provides a fuel injector sealing test bench, including a bench 1, a cylinder 2 is fixedly installed on the upper surface of the bench 1, a mounting frame 3 is fixedly installed on the piston rod end of the cylinder 2, the mounting frame 3 has a plurality of protruding ends and a supporting plate 4 is fixedly installed at the position of the protruding ends, an adjusting mechanism is provided on the supporting plate 4 and two fuel injector placement rings 5 ​​are provided through the adjusting mechanism, two fixed sleeve rings 6 are fixedly installed on both sides of the lower surface of the supporting plate 4, a telescopic hose 1 7 and a telescopic hose 2 8 are movably penetrated on the two fixed sleeve rings 6, and a sealing plug joint 9 is fixedly installed on the opposite end of the telescopic hose 1 7 and the telescopic hose 2 8, an air pump 10 is fixedly installed on the bench 1, and the air outlet of the air pump 10 is connected with four telescopic hoses 1 7, and a plurality of water storage tanks 11 are fixedly installed on the surface of the bench 1.

[0026] A plurality of guide rods 12 are fixedly mounted on the upper surface of the stand 1, and the mounting frame 3 is slidably mounted on the outer surfaces of the plurality of guide rods 12. When the piston rod of the cylinder 2 is extended and retracted to drive the mounting frame 3 to move up and down, the mounting frame 3 slides on the surface of the guide rods 12, thereby ensuring that the mounting frame 3 has good stability in its up and down movement.

[0027] The adjusting mechanism includes two fixed plates 13 fixedly mounted on the upper surface of the support plate 4, a rotating shaft 14 is rotatably mounted on the fixed plate 13, a bidirectional lead screw 16 is fixedly mounted between the two rotating shafts 14, a motor 15 is fixedly mounted on the upper surface of the support plate 4, the output shaft of the motor 15 is fixedly connected to the rotating shaft 14 at the corresponding position, threaded plates 17 are threadedly mounted on the two sections of the threaded outer surface of the bidirectional lead screw 16, the threaded plate 17 passes through the channel opened on the upper surface of the support plate 4 and is fixedly connected to the injector placement ring 5 at the same side position, the motor 15 is used to drive the rotating shaft 14 to rotate, the rotating shaft 14 drives the bidirectional lead screw 16 to rotate, thereby driving the two injector placement rings 5 ​​to move relative to each other, which is suitable for the detection of injectors of different specifications and lengths.

[0028] A plurality of guide rods 18 are fixedly installed between the two fixed plates 13, and the threaded plate 17 is slidably installed on the outer surface of the plurality of guide rods 18. When the threaded plate 17 moves under the rotation of the bidirectional lead screw 16, it will slide on the surface of the guide rods 18, thereby utilizing the guide rods 18 to achieve a good supporting and guiding effect.

[0029] The lower surface of the nozzle placement ring 5 is threadedly installed with an extrusion bolt 19, and the tail end of the extrusion bolt 19 extends to the inside of the nozzle placement ring 5. The setting of the extrusion bolt 19 can be used to squeeze and fix the nozzle inserted into the nozzle placement ring 5, and the fixing effect is good.

[0030] The plurality of water tanks 11 and the plurality of support plates 4 are arranged relatively to each other one above the other. The support plates 4 and the water tanks 11 that are relatively to each other are used in conjunction with each other to ensure that the support plates 4 will drive the fuel injectors to enter the water tanks 11 when they move downward.

[0031] When in use, the two nozzle placement rings 5 ​​on the support plate 4 are adjusted according to the length specifications of the nozzle workpiece to be tested. During the adjustment, the motor 15 is started, the motor 15 drives the rotating shaft 14 to rotate, and the rotating shaft 14 drives the bidirectional screw 16 to rotate, thereby driving the two nozzle placement rings 5 ​​to move relative to each other. After adjusting to the appropriate position, the motor 15 is stopped, the nozzle workpiece to be tested is transferred into the nozzle placement ring 5, the extrusion bolt 19 is screwed in for extrusion and fixation, the telescopic hose 1 7 and the telescopic hose 2 8 are pulled, and the telescopic hose 1 7, the nozzle workpiece and the telescopic hose 2 8 are connected by the sealing plug joint 9, water is added to the water tank 11, the cylinder 2 is started to drive the mounting frame 3 to drive the support plate 4 to move downward, and the support plate 4 drives the fixed nozzle workpiece to move downward into the water, the cylinder 2 is stopped, and the air pump 10 is started. The gas is input through the telescopic hose 1 7, and is discharged from the telescopic hose 2 8 after being transmitted through the nozzle workpiece. If there is a leakage, disturbed bubbles will appear in the water in the water tank 11. If no bubbles are generated, it means that the seal is not leaking.

Claims

1. A fuel injection nozzle sealing test bench, characterized in that: The invention comprises a stand (1), wherein a cylinder (2) is fixedly mounted on the upper surface of the stand (1), a mounting frame (3) is fixedly mounted on the piston rod end of the cylinder (2), the mounting frame (3) has a plurality of protruding ends and a support plate (4) is fixedly mounted at the position of the protruding ends, an adjustment mechanism is arranged on the support plate (4) and two fuel injection nozzle placement rings (5) are arranged through the adjustment mechanism, two fixed sleeves (6) are fixedly mounted on both sides of the lower surface of the support plate (4), a telescopic hose 1 (7) and a telescopic hose 2 (8) are movably penetrated on the two fixed sleeves (6), and a sealing plug joint (9) is fixedly mounted on the opposite ends of the telescopic hose 1 (7) and the telescopic hose 2 (8), and an air pump (10) is fixedly mounted on the stand (1), and the air outlet of the air pump (10) is The mouth is connected to four telescopic hoses (7); a plurality of water storage tanks (11) are fixedly mounted on the surface of the platform (1); a plurality of guide rods (12) are fixedly mounted on the upper surface of the platform (1); the mounting frame (3) is slidably mounted on the outer surface of the plurality of guide rods (12); the adjustment mechanism comprises two fixed plates (13) fixedly mounted on the upper surface of the support plate (4); a rotating shaft (14) is rotatably mounted on the fixed plate (13); a bidirectional lead screw (16) is fixedly mounted between the two rotating shafts (14); a motor (15) is fixedly mounted on the upper surface of the support plate (4); the output shaft of the motor (15) is fixedly connected to the rotating shaft (14) at a corresponding position; and threaded plates (17) are threadedly mounted on the outer surfaces of two sections of the thread of the bidirectional lead screw (16).

2. The fuel injection nozzle sealing test bench according to claim 1, characterized in that: The threaded plate (17) passes through a channel opened on the upper surface of the support plate (4) and is fixedly connected to the fuel injection nozzle placement ring (5) at the same side position.

3. The fuel injection nozzle sealing test bench according to claim 1, characterized in that: A plurality of guide rods (18) are fixedly mounted between the two fixing plates (13), and the threaded plate (17) is slidably mounted on the outer surfaces of the plurality of guide rods (18).

4. The fuel injection nozzle sealing test bench according to claim 1 is characterized in that: The lower surface of the fuel injector placement ring (5) is threadedly mounted with an extrusion bolt (19), and the tail end of the extrusion bolt (19) extends into the interior of the fuel injector placement ring (5).

5. The fuel injection nozzle sealing test bench according to claim 1 is characterized in that: A plurality of water storage tanks (11) and a plurality of support plates (4) are arranged opposite to each other one above the other.

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