Oil nozzle detection device

Abstract

The utility model discloses an oil nozzle detection device, and relates to the field of oil nozzle detection, the oil nozzle detection device comprises a base and a rotating base, the top surface of the base is provided with a servo motor used for driving the rotating base to rotate, the top surface of the base is fixedly connected with a shell fixedly connected and communicated with the servo motor, and one side of the servo motor is fixedly connected with a driving shaft. The outer surface of the driving shaft is fixedly connected with a worm, an auxiliary mechanism used for smearing lubricating oil on the outer surface of the worm is arranged in the shell, and the auxiliary mechanism comprises a roller used for smearing the lubricating oil. The precise worm and gear transmission mechanism is driven by the servo motor, rapid station switching and precise positioning are achieved, compared with traditional single-station detection, the detection efficiency is improved by more than four times through cooperation of an electric control system and mechanical transmission, and meanwhile the risk of manual misoperation is reduced.

Description

Technical Field

[0001] This application relates to the field of fuel injector testing, and in particular to a fuel injector testing device. Background Technology

[0002] As a core component of the modern internal combustion engine fuel system, the fuel injector's performance directly affects the engine's combustion efficiency, power output, fuel economy, and emission control levels. With the widespread application of electronically controlled high-pressure common rail technology, fuel injectors must maintain stable and reliable injection characteristics under extreme conditions of ultra-high injection pressure (above 200 MPa) and high-frequency operation (thousands of times per second). Therefore, their manufacturing precision and performance consistency have become key factors determining the overall engine performance. Key parameters of the fuel injector, such as nozzle size, fuel jet angle, dynamic flow characteristics, sealing performance, and atomization uniformity, must strictly comply with design standards. Any slight deviation can lead to incomplete combustion, reduced power, excessive emissions, and even affect the engine's reliability and lifespan.

[0003] Currently, fuel injector testing mainly relies on manual operation combined with semi-automatic equipment, such as using a manual pressure pump to adjust fuel pressure, a two-dimensional imager to measure geometric parameters, or using simple tooling for sealing tests. These methods are inefficient, with the measurement of a single parameter taking several minutes. In addition, traditional testing methods are greatly affected by the operator's experience, resulting in poor data consistency. The sampling inspection mode cannot cover all products, leading to a high risk of missed inspections. Utility Model Content

[0004] To address the issue of low efficiency in testing when combined with manual operation and semi-automatic equipment, this application provides a fuel injector testing device.

[0005] The fuel injector detection device provided in this application adopts the following technical solution:

[0006] A fuel injector detection device includes a base and a rotating base. A servo motor for driving the rotating base to rotate is provided on the top surface of the base. A housing that is fixedly connected to and communicates with the servo motor is fixedly connected to the top surface of the base. A drive shaft is fixedly connected to one side of the servo motor, and a worm gear is fixedly connected to the outer surface of the drive shaft.

[0007] The housing is equipped with an auxiliary mechanism for applying lubricating oil to the outer surface of the worm gear, the auxiliary mechanism including a roller for applying lubricating oil.

[0008] By adopting the above technical solution, the base serves as the basic support platform for the equipment, bearing all moving parts. The rotating base is a rotating platform for installing and testing the workstation, directly outputting indexing motion. The servo motor is the power source, and the start / stop / speed / angle are precisely controlled through the electronic control system. The drive shaft is a rigid transmission shaft that transmits motor torque to the worm gear. The worm gear is used to convert the rotational motion input from the drive shaft into the deceleration and torque-increasing motion of the worm wheel. The outer shell is used to seal and protect the transmission components and prevent foreign objects from entering. The auxiliary mechanism is used to automatically apply lubricating oil to the surface of the worm gear, and the roller is used to directly contact the worm gear tooth surface and roll to apply lubricating grease.

[0009] Preferably, the auxiliary mechanism further includes a gear one fixedly connected to the outer surface of the drive shaft, a gear two meshing with the gear one being rotatably connected inside the housing, and support blocks being symmetrically fixedly connected inside the housing.

[0010] By adopting the above technical solution, gear one is used to divert the motor power to the lubrication system, gear two is used to transmit the rotational motion to the lubrication actuator, and the support block is used to provide a rigid mounting reference for gear two and the rotating rod to ensure transmission stability.

[0011] Preferably, a rotating rod is fixedly connected to one side of the second gear and rotatably connected inside the support block. A wedge block is fixedly connected to the outer surface of the rotating rod. A telescopic rod is fixedly connected to the side of the support block away from the outer shell. An auxiliary frame is fixedly connected to the side of the telescopic rod away from the support block. A return spring is fixedly connected between the auxiliary frame and the support block.

[0012] By adopting the above technical solution, the rotating rod is used to transmit the rotational motion of gear two to the wedge block. When the wedge block rotates, it periodically pushes the push block to convert the rotation into linear reciprocating motion. The telescopic rod is a guide structure that limits the movement trajectory of the auxiliary frame. The auxiliary frame is a moving platform for installing rollers and scrapers. After the wedge block is disengaged, the reset spring pulls the auxiliary frame to reset, realizing intermittent application of lubricating oil.

[0013] Preferably, the roller is rotatably connected inside the auxiliary frame, and a bevel gear set one is fixedly connected to the side of the rotating rod away from the second gear. A connecting column is fixedly connected to the side of the first bevel gear set away from the rotating rod, and a bevel gear set two, which is fixedly connected to the roller, is fixedly connected to the side of the connecting column away from the first bevel gear set.

[0014] By adopting the above technical solution, the first bevel gear set is used to change the rotation direction to adapt to the spatial layout, the connecting column is the transmission shaft connecting the two bevel gear sets, and the second bevel gear set ultimately transmits the power to the roller to drive its rotation.

[0015] Preferably, a plurality of scraping columns are fixedly arranged in a linear array inside the auxiliary frame, a pusher block that abuts against the wedge block is fixedly connected to the side of the auxiliary frame away from the roller, and a collection box is fixedly connected to the bottom surface of the support block.

[0016] By adopting the above technical solution, the scraper is used to scrape off excess grease from the worm gear tooth surface to prevent the oil film from becoming too thick. The pusher is pushed by the wedge block, triggering the auxiliary frame to move towards the worm. The collection box is used to collect the scraped-off old grease and metal debris to keep the system clean.

[0017] Preferably, a gear three is fixedly connected to the outer surface of the rotating rod, a gear four that meshes with the gear three is rotatably connected to one side of the support block, and a reciprocating lead screw is fixedly connected to the side of the gear four away from the support block.

[0018] By adopting the above technical solution, gear three is fixed to the rotating rod and provides output power, while gear four is used to drive the reciprocating screw to rotate. The reciprocating screw converts the rotational motion into the linear reciprocating motion of the nut.

[0019] Preferably, a support plate is fixedly connected to the side of the support block near the gear four, a cylinder is fixedly connected to the outer surface of the support plate, and a nut is slidably connected to the outer surface of the reciprocating lead screw.

[0020] By adopting the above technical solution, the support plate is the mounting base plate for fixing the cylinder, the cylinder is a sealed chamber for storing lubricating oil, and the nut moves axially along the reciprocating screw to push the piston plate.

[0021] Preferably, a piston plate that is adapted to slide on the side of the nut near the support plate is fixedly connected to the nut, and a connecting pipe is fixedly connected and connected to the side of the cylinder away from the nut. The end of the connecting pipe away from the cylinder is rotatably connected and connected to the roller.

[0022] By adopting the above technical solution, the piston plate forms a sealed cavity inside the cylinder to squeeze out lubricating oil, and the connecting pipe is used to transport the lubricating grease from the cylinder to the inside of the roller.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Utilizing an integrated electrical control system for a four-station turntable, the rotation and positioning of the four-station turntable are centrally controlled by an electrical control box. A servo motor drives a precision worm gear transmission mechanism to achieve rapid station switching and precise positioning. Compared with traditional single-station inspection, this design improves inspection efficiency by more than 4 times through the synergy of the electrical control system and mechanical transmission, while reducing the risk of human error.

[0025] 2. By intermittently brushing lubricating oil onto the outer surface of the worm gear with rollers, the lubricating oil is ensured to accurately cover the meshing area. This reduces the friction coefficient of the worm gear, improves transmission efficiency, shortens the start-up and stop time of station switching, reduces lubricating oil waste and consumption through intermittent oil supply, and avoids oil churning losses caused by excessive lubrication. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this application;

[0027] Figure 2 This is a schematic diagram of the connection structure of the rotating base in this application;

[0028] Figure 3 This is a schematic diagram of the internal structure of the outer shell of this application;

[0029] Figure 4 This is a schematic diagram of the roller connection structure in this application;

[0030] Figure 5 This is a schematic diagram of the connection structure of the scraper columns in this application;

[0031] Figure 6 This is a schematic diagram of the internal structure of the cylinder in this application.

[0032] Reference numerals in the attached diagram: 1. Base; 2. Rotating base; 3. Servo motor; 4. Drive shaft; 5. Worm gear; 6. Worm wheel; 7. Rotating shaft; 8. Housing;

[0033] 91. Gear 1; 92. Gear 2; 93. Support block; 94. Rotating rod; 95. Wedge block; 96. Telescopic rod; 97. Return spring; 98. Auxiliary frame; 99. Roller;

[0034] 910. Bevel gear set one; 911. Connecting column; 912. Bevel gear set two; 913. Push block; 914. Scraper column; 915. Collection box;

[0035] 916. Gear 3; 917. Gear 4; 918. Reciprocating lead screw; 919. Nut; 920. Piston plate; 921. Cylinder; 922. Connecting pipe; 923. Support plate. Detailed Implementation

[0036] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0037] This application discloses a fuel injector detection device.

[0038] Reference Figure 1 , Figure 2A fuel injector detection device includes a base 1 and a rotating base 2. The top surface of the base 1 is fixedly connected to a servo motor 3, which is combined with a reducer. The servo motor 3 is of model ECMA-C10401GS. The top surface of the base 1 is fixedly connected to a housing 8, and the housing 8 is fixedly connected to and communicates with the servo motor 3. The output shaft of the servo motor 3 is fixedly connected to a drive shaft 4. The outer surface of the middle part of the drive shaft 4 is fixedly connected to a worm gear 5. A rotating shaft 7 is rotatably connected to the center of the inner wall of the housing 8. A worm wheel 6 is fixedly connected to the bottom of the outer surface of the rotating shaft 7, and the worm wheel 6 meshes with the worm gear 5. The top surface of the rotating shaft 7 is fixedly mounted to the center of the rotating base 2 through a flange.

[0039] In use, the servo motor 3 transmits torque to the worm 5 through the drive shaft 4. The worm 5 meshes with the worm wheel 6 to transmit motion to the rotating base 2, thereby causing it to rotate.

[0040] Reference Figure 3 , Figure 4 The outer casing 8 has an auxiliary mechanism inside, including a gear 91 fixedly connected to the outer surface of the drive shaft 4. Gear 91 is located on the side of the worm gear 5 near the inner wall of the outer casing 8. The inner wall of the outer casing 8 is rotatably connected to a gear 92. Gear 92 meshes with gear 91, and the diameter of gear 91 is larger than the diameter of gear 92 (gear ratio 1:3). That is, one rotation of gear 91 can drive gear 92 to rotate three times. The inner wall of the outer casing 8 is fixedly connected to two support blocks 93. The two support blocks 93 are symmetrical to each other and parallel to gear 92. The side of gear 92 near the support block 93 is fixedly connected to a rotating rod 94. The rotating rod 94 passes through and is rotatably connected inside the support block 93. The outer surface of the middle part of the rotating rod 94 is fixedly connected to a wedge block 95. One side of the telescopic rod 96 is fixedly connected to the telescopic rod 96, which is located on the side away from the outer casing 8. The telescopic rod 96 is made of a fixed cylinder and a sliding rod. The inner wall of the fixed cylinder can be provided with an annular groove. The end of the sliding rod can be fitted with a limit ring. When the sliding rod slides to the maximum stroke, the limit ring engages with the annular groove to limit the movement. One side of the telescopic rod 96 is fixedly connected to the auxiliary frame 98, which is located on the side away from the support block 93. A return spring 97 is fixedly connected to the side of the auxiliary frame 98 near the support block 93. The side of the return spring 97 away from the auxiliary frame 98 is fixedly connected to the support block 93. The inner wall of the auxiliary frame 98 is rotatably connected to the roller 99. The roller 99 is hollow inside and filled with lubricating oil. A brush made of synthetic fiber is fixedly provided on the outer surface of the roller 99. The surface of the brush can be treated with microgrooves to increase the oil storage microcavity.

[0041] In use, the rotation of the drive shaft 4 drives the gear 91 fixedly connected to the drive shaft 4 to rotate. The rotation of the gear 91 drives the gear 92 meshing with the gear 91 to rotate. The rotation of the gear 92 drives the rotating rod 94 fixedly connected to the gear 92 to rotate. The rotation of the rotating rod 94 drives the wedge block 95 to push the push block 913 to move closer to the worm 5. The movement of the push block 913 drives the auxiliary frame 98 fixedly connected to the push block 913 to move, and the roller 99 moves together. The roller 99 intermittently brushes the lubricating oil onto the outer surface of the worm 5 to ensure that the lubricating oil accurately covers the meshing area, and the roller 99 just contacts the worm 5 when it moves to its maximum extent.

[0042] Reference Figure 4 , Figure 5 One side of the rotating rod 94 is fixedly connected to the first bevel gear set 910, which is located on the side away from the second gear 92. One side of the first bevel gear set 910 is fixedly connected to the center point of the connecting column 911, which is located on the side away from the rotating rod 94 and is rotatably connected inside the auxiliary frame 98. One side of the connecting column 911 is fixedly connected to the second bevel gear set 912, which is located on the side away from the first bevel gear set 910 and is fixedly connected to the center of one side of the roller 99. The auxiliary frame 98 is internally fixed with a linear array of... There are several scraper columns 914 located at the bottom of the roller 99. They are used to scrape off impurities adhering to the outer surface of the roller 99. The scraper columns 914 are installed at an angle of 30° and their ends are guided to the groove of the collection box 915. The scraped impurities slide into the collection box 915 along the inclined surface. The center point of one side of the auxiliary frame 98 is fixedly connected to the push block 913. The push block 913 is located on the side away from the roller 99 and abuts against the wedge block 95. The bottom surface of the support block 93 is fixedly connected to the collection box 915 by bolts. The collection box 915 has a groove located below the scraper columns 914 for collecting impurities.

[0043] In use, the rotation of the rotating rod 94 drives the first bevel gear set 910, which is fixedly connected to the rotating rod 94, to rotate. The rotation of the first bevel gear set 910 drives the connecting column 911, which is fixedly connected to the first bevel gear set 910, to rotate. The rotation of the connecting column 911 drives the second bevel gear set 912, which is fixedly connected to the connecting column 911, to rotate. The rotation of the second bevel gear set 912 drives the roller 99 to rotate, thereby applying lubricating oil to the surface of the worm gear 5. The rotation of the roller 99 passes through the scraper column 914, which scrapes off the impurities adhering to the surface of the roller 99 and collects the impurities through the collection box 915.

[0044] Reference Figure 4 , Figure 6The outer surface of the rotating rod 94 is fixedly connected to the center of gear three 916. Gear three 916 is located on the side closer to gear two 92. One side of the support block 93 is rotatably connected to gear four 917. Gear four 917 is located on the side closer to gear three 916 and meshes with gear three 916. One side of gear four 917 is fixedly connected to reciprocating screw 918. Reciprocating screw 918 is located on the side away from support block 93 and includes balls and a reversing device. One side of support block 93 is fixedly connected to support plate 923. Support plate 923 is located on the side closer to gear four 917. The outer surface of support plate 923 is fixedly connected to cylinder 921. The interior of cylinder 921 is hollow and filled with lubricating oil. A one-way valve for oil inlet can be added to cylinder 921 and connected to an oil storage tank. When piston plate 920 returns, it draws in new oil. The outer surface of reciprocating screw 918 is threadedly connected to nut 919. One side of nut 919 is fixedly connected to piston plate 920. Piston plate 920 is located on the side close to support plate 923 and is slidably adapted to cylinder 921. One side of the arc surface of cylinder 921 is fixedly connected to and communicates with connecting pipe 922. Connecting pipe 922 is located on the side away from nut 919. One side of connecting pipe 922 is rotatably connected to roller 99 and communicates with it. A rotary sealing joint (model: SMC MQR01) is provided between connecting pipe 922 and roller 99 to allow roller 99 to rotate freely while maintaining oil circuit sealing. Connecting pipe 922 is located at the end away from cylinder 921. Connecting pipe 922 can be snapped onto the top surface of support plate 923 and has a certain length reserved.

[0045] In use, the rotation of the rotating rod 94 drives the gear three 916, which is fixedly connected to the rotating rod 94, to rotate. The rotation of the gear three 916 drives the gear four 917, which is meshed with the gear three 916, to rotate. The rotation of the gear four 917 drives the reciprocating screw 918, which is fixedly connected to the gear four 917, to rotate. This causes the nut 919 to reciprocate on the surface of the reciprocating screw 918, which in turn causes the piston plate 920 to reciprocate inside the cylinder 921. This allows the lubricating oil inside the cylinder 921 to be injected into the inside of the roller 99 through the connecting pipe 922.

[0046] In this device, the return spring 97 uses the calculation formula for alloy springs: F = kx, where F is the external force on the spring, k is the spring constant, N / m, and x is the deformation of the spring, m. The elastic force of the alloy spring is then calculated so that it can be used in this device.

[0047] The implementation principle of the fuel injector detection device in this application embodiment is as follows:

[0048] In use, the servo motor 3 drives the drive shaft 4, worm 5, and worm wheel 6 to rotate. The drive shaft 4 rotates the gear 1 91, gear 2 92, and rotating rod 94. The rotation of rotating rod 94 drives the gear 3 916, which is fixedly connected to the rotating rod 94, to rotate. The rotation of gear 3 916 drives the gear 4 917, which is meshed with gear 3 916, to rotate. The rotation of gear 4 917 drives the reciprocating screw 918, which is fixedly connected to gear 4 917, to rotate. This causes the nut 919 to reciprocate on the surface of the reciprocating screw 918, which in turn drives the piston plate 920 to reciprocate inside the cylinder 921. This allows the lubricating oil inside the cylinder 921 to be injected into the inside of the roller 99 through the connecting pipe 922.

[0049] The rotation of the rotating rod 94 drives the wedge block 95 to push the push block 913, the auxiliary frame 98, and the roller 99 together to move closer to the worm 5. The rotation of the rotating rod 94, the rotation of the first bevel gear set 910, the connecting column 911, and the second bevel gear set 912, in turn cause the roller 99 to rotate, thereby applying lubricating oil to the surface of the worm 5. The rotation of the roller 99 will pass through the scraper column 914, and the scraper column 914 will scrape off the impurities adhering to the surface of the roller 99, and collect the impurities through the collection box 915.

[0050] Furthermore, the rotation of the rotating shaft 7 drives the rotating base 2, which is fixedly connected to it, to rotate, thereby achieving rotation.

[0051] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fuel injector detection device, characterized in that: Includes a base (1) and a rotating base (2). The top surface of the base (1) is provided with a servo motor (3) for driving the rotating base (2) to rotate. The top surface of the base (1) is fixedly connected to a housing (8) which is fixedly connected to and communicates with the servo motor (3). A drive shaft (4) is fixedly connected to one side of the servo motor (3). A worm gear (5) is fixedly connected to the outer surface of the drive shaft (4). The housing (8) is provided with an auxiliary mechanism for applying lubricating oil to the outer surface of the worm (5), the auxiliary mechanism including a roller (99) for applying lubricating oil.

2. The fuel injector detection device according to claim 1, characterized in that: The auxiliary mechanism also includes a gear one (91) fixedly connected to the outer surface of the drive shaft (4), a gear two (92) that meshes with the gear one (91) is rotatably connected inside the housing (8), and a support block (93) is symmetrically fixedly connected inside the housing (8).

3. The fuel injector detection device according to claim 2, characterized in that: A rotating rod (94) is fixedly connected to one side of the gear (92) and is rotatably connected inside the support block (93). A wedge block (95) is fixedly connected to the outer surface of the rotating rod (94). A telescopic rod (96) is fixedly connected to the side of the support block (93) away from the outer shell (8). An auxiliary frame (98) is fixedly connected to the side of the telescopic rod (96) away from the support block (93). A return spring (97) is fixedly connected between the auxiliary frame (98) and the support block (93).

4. The fuel injector detection device according to claim 3, characterized in that: The roller (99) is rotatably connected inside the auxiliary frame (98). The rotating rod (94) is fixedly connected to the first bevel gear set (910) on the side away from the second gear (92). The first bevel gear set (910) is fixedly connected to the side away from the rotating rod (94) with a connecting column (911). The connecting column (911) is fixedly connected to the second bevel gear set (912) which is fixedly connected to the roller (99) on the side away from the first bevel gear set (910).

5. The fuel injector detection device according to claim 4, characterized in that: The auxiliary frame (98) has a linear array of scraping columns (914) fixed inside. The side of the auxiliary frame (98) away from the roller (99) is fixedly connected to a push block (913) that abuts against the wedge block (95). The bottom surface of the support block (93) is fixedly connected to a collection box (915).

6. The fuel injector detection device according to claim 3, characterized in that: Gear 3 (916) is fixedly connected to the outer surface of the rotating rod (94), and gear 4 (917) is rotatably connected to one side of the support block (93) and meshes with gear 3 (916). A reciprocating screw (918) is fixedly connected to the side of gear 4 (917) away from the support block (93).

7. The fuel injector detection device according to claim 6, characterized in that: The support block (93) is fixedly connected to a support plate (923) on the side near the gear four (917). A cylinder (921) is fixedly connected to the outer surface of the support plate (923). A nut (919) is slidably connected to the outer surface of the reciprocating screw (918).

8. The fuel injector detection device according to claim 7, characterized in that: The nut (919) is fixedly connected to a piston plate (920) that is slidably adapted to the cylinder (921) on the side near the support plate (923). The cylinder (921) is fixedly connected to and connected to a connecting pipe (922) on the side away from the nut (919). The end of the connecting pipe (922) away from the cylinder (921) is rotatably connected to and connected to the roller (99).

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