Performance test device for fuel injection pump speed regulator

Abstract

The invention discloses a performance testing device for a fuel injection pump speed governor, and relates to the technical field of diesel engine speed governor testing equipment. The following scheme is proposed, which includes a cabinet body, a stepping motor connected to the cabinet body, a fixed shell connected to the cabinet body, a sleeve movably connected to the fixed shell, a torque detection motor installed on the fixed shell, an oil tank connected to the cabinet body, a flow meter installed on the oil tank, and a recording card connected to the fixed shell; the invention can measure the movement distance of the clamping jaw by a laser shift sensor, so as to facilitate measuring the movement distance of the clamping jaw according to different rotation speeds and facilitate testing the performance of the sliding plate; the sliding end of the sliding plate pushes the shift fork to swing, and the insertion rod drives the torque detection motor to rotate, thereby detecting the torque and rotation amplitude of the shift fork; the flow meter can record the amount of oil pumped each time; when the recording card moves, the paintbrush will draw lines on the recording card, so as to facilitate recording the rotation amplitude of the shift fork at different time periods and different rotation speeds on the recording card by the paintbrush.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engine speed governor testing equipment, in particular to a performance testing device for a fuel injection pump speed governor. Background Art

[0002] The speed governor is an automatic regulating device that automatically increases or decreases the fuel supply of the injection pump according to changes in the diesel engine load, allowing the diesel engine to run at a stable speed. The sliding plate speed governor is a common speed governor for diesel engine injection pumps. A test device is required during the performance test of the injection pump speed governor.

[0003] After searching, a Chinese invention patent application with publication number CN119666335A discloses an electro-hydraulic governor test device and test method. The invention includes a governor test bench that drives the output shaft of the test piece to rotate. The governor test bench is provided with a torque-loading motor, the motor shaft of the torque-loading motor is opposite to the test piece, and the motor shaft of the torque-loading motor and the test piece are relatively connected via a torque connection assembly. The torque-loading motor loads the test piece, and a control assembly is provided on one side of the governor test bench. The control assembly is connected to the torque-loading motor and the test piece by signal. This application has the effect of shortening the time it takes to assemble it on a diesel engine for reliability testing, thereby saving costs; and can configure corresponding test parameters according to actual application conditions, so that the durability and reliability tests carried out are closer to actual application conditions.

[0004] However, in actual use, the above and similar technical solutions still have some problems:

[0005] 1. The aforementioned speed governor test device is designed specifically for testing the output torque of electro-hydraulic speed governors. Its functional architecture and detection mechanism are not suitable for testing sliding-disc speed governors. Specifically, the device lacks a dedicated mechanism for detecting the slip distance of sliding-disc speed governors, resulting in functional limitations in testing these types of governors.

[0006] 2. In the testing process of sliding-disc speed regulators, existing testing methods make it difficult to accurately record and test the shift fork swing amplitude and torque parameters. This is mainly due to the lack of corresponding measurement mechanisms and data acquisition systems, which makes it impossible to effectively obtain and quantify these key performance indicators.

[0007] 3. Regarding the data obtained during the test process, the current test equipment lacks an intuitive data visualization observation mechanism and an efficient data recording mechanism. This defect makes it difficult for testers to quickly conduct comprehensive analysis and evaluation of the measurement data, which in turn affects the test efficiency and the accuracy of the results. Summary of the Invention

[0008] In order to overcome the deficiencies in the prior art, the present invention provides a performance testing device for a fuel injection pump speed regulator, which is convenient for measuring the speed regulator slide plate, recording the rotation amplitude and torque of the shift fork, and recording data.

[0009] To achieve the above objectives, the present invention discloses a performance testing device for a fuel injection pump speed regulator, comprising a cabinet, a speed regulator mounting mechanism connected to the cabinet, the speed regulator mounting mechanism comprising a speed regulator housing, a speed regulator housing placed on the cabinet, a fuel injection pump and a shift fork mounted inside the speed regulator housing, the speed regulator housing being equipped with a sliding plate, and the cabinet being equipped with a controller;

[0010] The cabinet is connected to a stepper motor, an output shaft of the stepper motor is mounted with a control shaft, the slide plate is plugged into the control shaft, the cabinet is connected to a first cam that rotates synchronously with the slide plate, and the first cam abuts against the pressing end of the fuel injection pump;

[0011] The cabinet is connected to a torque detection mechanism, which includes a fixed shell. The cabinet is connected to the fixed shell. A sleeve is movably connected to the fixed shell. The sleeve is plugged into the top end of the rotating shaft of the shift fork. A torque detection motor is installed on the fixed shell. The top end of the sleeve is connected to the rotating shaft of the torque detection motor.

[0012] The cabinet is connected to an oil injection detection mechanism, which includes an oil tank. The cabinet is connected to an oil tank, an oil inlet pipe is installed between the oil filling end of the oil injection pump and the oil tank, a flow meter is installed on the oil tank, and an oil injection pipe is installed between the oil injection end of the oil injection pump and the flow meter.

[0013] Preferably, the cabinet is connected to a control component, the control component includes a push block, the cabinet is slidably connected to the push block, the stepper motor is installed on the push block, the cabinet is installed with a second electric push rod, and the end of the push block is installed on the telescopic end of the second electric push rod.

[0014] Preferably, a thrust detection mechanism is installed on the cabinet body, and the thrust detection mechanism includes a fourth electric push rod. The cabinet body is equipped with a fourth electric push rod, and an end block is installed on the telescopic end of the fourth electric push rod. A clamp is slidably connected to the end block, and a third spring is installed between the clamp and the end block. A laser shift sensor is installed at one end of the end block, and the clamp is used to contact one side of the sliding plate.

[0015] Preferably, a limiting assembly is connected to the cabinet, and the limiting assembly includes a first electric push rod. The first electric push rod is installed on the top of the cabinet, and a pull plate is installed on the telescopic end of the first electric push rod. The bottom end of the pull plate is provided with a pressure plate, and a fixing column is installed between the pull plate and the pressure plate. The bottom end of the pressure plate is in tight contact with the top of the speed regulator housing.

[0016] Preferably, the fixed shell is installed on the pressure plate, and a third electric push rod is installed on the fixed shell, the telescopic end of the third electric push rod is rotatably connected to the sleeve, and an insertion rod is installed on the output shaft of the torque detection motor, and the insertion rod is slidably connected to the sleeve, and the inner bottom end of the sleeve is rotatably connected to a clamping block, and the clamping block has an "L"-shaped structure, the top of the clamping block contacts the top of the rotating shaft of the fork, and the side end of the clamping block contacts the side wall of the rotating shaft of the fork.

[0017] Preferably, a second gear is installed on the output shaft of the torque detection motor, a first gear is rotatably connected to the fixed shell, the second gear is engaged with the first gear, the diameter of the second gear is larger than that of the first gear, and a pointer is installed on the rotating shaft of the first gear.

[0018] Preferably, the fixed shell is connected to a recording mechanism, and the recording mechanism includes a mounting box, the mounting box is installed on the fixed shell, a top block is slidably connected to the mounting box, a paintbrush is inserted into the top block, a second spring is installed between the top block and the mounting box, a second cam is installed on the rotating shaft of the first gear, the outer edge of the second cam is in contact with the top block, a recording card is movably inserted into the mounting box, the top surface of the recording card is in contact with the tip of the paintbrush, a rotating roller is rotatably connected to the mounting box, and the rotating roller is in contact with the surface of the recording card.

[0019] Preferably, the outer wall of the rotating roller is provided with a plurality of protrusions, the recording card is provided with a plurality of linearly arranged dot grooves, and the protrusions extend into the dot grooves.

[0020] Preferably, the mounting box is connected to a driving mechanism, the driving mechanism includes a protective shell, the mounting box is installed with a protective shell, the shaft end of the rotating roller extends into the interior of the protective shell and is installed with a third gear, the protective shell is slidably connected to a push plate, the push plate is slidably connected to a rack, the teeth of the rack are serrated, the rack is unidirectionally meshed with the third gear, and a fourth spring is installed between the rack and the protective shell.

[0021] Preferably, the oil tank is connected to a transmission assembly, and the transmission assembly includes a mounting block, the mounting block is installed on the oil tank, the end of the oil injection pipe is installed on the bottom end of the mounting block, the side wall of the mounting block is installed with a connecting pipe, the end of the connecting pipe is installed on the output end of the flow meter, a fixed pipe is installed on the mounting block, the oil injection pipe is connected with the connecting pipe through the bottom end of the fixed pipe, a first piston is installed at the inner bottom end of the fixed pipe, a first spring is installed between the first piston and the fixed pipe, a communicating air pipe is installed on the fixed pipe, one end of the air pipe is installed on a protective shell, a second piston is slidably connected to the inside of the air pipe, a push rod is installed at one end of the second piston, and one end of the push rod is fixedly connected to the push plate.

[0022] The present invention has the following technical effects:

[0023] 1. The performance test device of the fuel injection pump speed regulator will control the push block to slide toward the inside of the cabinet when testing the speed regulator, driving the sliding plate to move toward the inside of the cabinet, starting the fourth electric push rod, pushing the end block and the clamping claw close to the sliding plate, so that the clamping claw and the sliding end of the sliding plate come into contact with each other, and controlling the rotation speed of the stepping motor through the controller. The sliding plate is driven to rotate by the control shaft, and the balls inside the sliding plate slide outward under the centrifugal effect, thereby causing the sliding end of the sliding plate to move outward, pushing the clamping claw to slide. The laser displacement sensor can measure the moving distance of the clamping claw, thereby facilitating the measurement of the moving distance of the clamping claw according to different rotation speeds, and facilitating the testing of the performance of the sliding plate.

[0024] 2. The performance test device of the fuel injection pump speed regulator is as follows: the speed regulator is placed on the cabinet, the sleeve is plugged into the top end of the rotating shaft of the shift fork, the sliding plate is pushed out, the sliding side of the sliding plate contacts the shift fork, the sliding plate and the first cam are equipped with gears, the sliding plate and the first cam are driven by gears, when the stepper motor controls the rotation of the sliding plate and the first cam, the sliding end of the sliding plate pushes the shift fork to swing, the rotation amplitude of the shift fork is different when the speed of the sliding plate is different, the shift fork drives the sleeve to rotate, and the torque detection motor is driven to rotate through the plug rod, so as to detect the torque and rotation amplitude of the shift fork, when the rotating shaft of the torque detection motor rotates, it drives the second gear and the first gear to rotate, thereby driving the pointer to swing, so as to facilitate intuitive observation of the movement of the shift fork.

[0025] 3. The performance test device of the fuel injection pump speed regulator, the first cam drives the fuel injection pump to work, the oil is sprayed out through the fuel injection pipe, and enters the fuel tank through the flow meter. The flow meter can record the amount of oil pumped each time, so as to facilitate comparison with the sliding amount of the sliding plate. The oil enters the mounting block through the fuel injection pipe, pushing the first piston to slide upward. Under the action of air pressure, the third gear is pushed to rotate by pushing the push plate and the rack, thereby driving the rotating roller to rotate intermittently. The recording card is moved in one direction through the convex points and the dot grooves, and the paintbrush will draw lines on the recording card, so that it is convenient to use the paintbrush to record the rotation amplitude of the shift fork at different time periods and different speeds on the recording card, which is convenient for data comparison and analysis. The recording card can make the data more intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional view of a performance testing device for a fuel injection pump speed regulator proposed by the present invention;

[0027] Figure 2 A view of the governor housing connection structure of the present invention;

[0028] Figure 3 A view of the fuel injection pump connection structure of the present invention;

[0029] Figure 4 A view of a fixed shell connection structure of the present invention;

[0030] Figure 5 A view of the fuel tank connection structure of the present invention;

[0031] Figure 6 A view of a fixed pipe connection structure of the present invention;

[0032] Figure 7 A view of the push block connection structure of the present invention;

[0033] Figure 8 A view of an end block connection structure of the present invention;

[0034] Figure 9 A view of the sleeve connection structure of the present invention;

[0035] Figure 10 A view of a torque detection motor connection structure of the present invention;

[0036] Figure 11 A view of the clamp block connection structure of the present invention;

[0037] Figure 12 is a view of a second cam connection structure of the present invention;

[0038] Figure 13 is a view of a third gear connection structure of the present invention;

[0039] Figure 14 A diagram showing the structure of a record card according to the present invention.

[0040] In the figure, 1. cabinet; 2. speed regulating installation mechanism; 21. controller; 22. speed regulator housing; 23. limit assembly; 231. first electric push rod; 232. pull plate; 234. pressure plate; 235. fixed column; 24. fuel injection pump; 25. shift fork; 26. slide plate; 27. control assembly; 271. control shaft; 272. stepper motor; 273. second electric push rod; 274. push block; 275. first cam; 3. fuel injection detection mechanism; 31. fuel tank; 32. fuel injection pipe; 33. fuel inlet pipe; 34. flow meter; 4. recording mechanism; 41. recording card; 42. transmission assembly; 421. air pipe; 422. mounting block; 423. connecting pipe; 424. fixing pipe; 425. first spring; 42 6. First piston; 427. Rotating roller; 428. Push rod; 429. Second piston; 43. Mounting box; 44. Brush; 45. Second cam; 46. Push block; 47. Second spring; 5. Torque detection mechanism; 51. Fixed shell; 52. Torque detection motor; 53. Sleeve; 54. Pointer; 55. Third electric push rod; 56. Insert rod; 57. First gear; 58. Second gear; 59. Clamp; 6. Thrust detection mechanism; 61. Fourth electric push rod; 62. Clamp; 63. End block; 64. Third spring; 65. Laser shift sensor; 7. Driving mechanism; 71. Protective shell; 72. Third gear; 73. Fourth spring; 74. Rack; 75. Push plate; 76. Bump; 77. Dot groove. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1 To the attached Figure 14 The present invention is described in detail with reference to the embodiments. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] A performance testing device for a fuel injection pump speed regulator comprises a cabinet 1, to which a speed regulator mounting mechanism 2 is connected. The speed regulator mounting mechanism 2 comprises a speed regulator housing 22. The speed regulator housing 22 is placed on the cabinet 1, and a fuel injection pump 24 and a shift fork 25 are mounted inside the speed regulator housing 22. The speed regulator housing 22 is provided with a slide plate 26. The cabinet 1 is provided with a controller 21. A stepper motor 272 is connected to the cabinet 1, and a control shaft 271 is mounted on the output shaft of the stepper motor 272. The slide plate 26 is plugged into the control shaft 271. A first cam 275 that rotates synchronously with the slide plate 26 is connected to the cabinet 1. The first cam 275 contacts the pressing end of the fuel injection pump 24, thereby simulating the operation of the engine driving the slide plate 26 and controlling the rotation speed of the slide plate 26.

[0043] In the present invention, the cabinet 1 is connected to a control component 27, which includes a push block 274. The push block 274 is slidably connected to the cabinet 1, and the stepper motor 272 is installed on the push block 274. A second electric push rod 273 is installed on the cabinet 1, and the end of the push block 274 is installed on the telescopic end of the second electric push rod 273, thereby facilitating the docking of the sliding plate 26 and the fork 25.

[0044] In the present invention, a thrust detection mechanism 6 is installed on the cabinet body 1, and the thrust detection mechanism 6 includes a fourth electric push rod 61. The fourth electric push rod 61 is installed on the cabinet body 1, and an end block 63 is installed on the telescopic end of the fourth electric push rod 61. A clamping claw 62 is slidably connected to the end block 63, and a third spring 64 is installed between the clamping claw 62 and the end block 63. A laser shift sensor 65 is installed at one end of the end block 63, and the clamping claw 62 is used to contact one side of the sliding plate 26, so as to facilitate the detection of the distance that the sliding end of the sliding plate 26 slides out.

[0045] In the present invention, a limiting component 23 is connected to the cabinet body 1, and the limiting component 23 includes a first electric push rod 231. The first electric push rod 231 is installed on the top of the cabinet body 1, and a pull plate 232 is installed on the telescopic end of the first electric push rod 231. The bottom end of the pull plate 232 is provided with a pressure plate 234, and a fixing column 235 is installed between the pull plate 232 and the pressure plate 234. The bottom end of the pressure plate 234 is in close contact with the top of the speed regulator housing 22, thereby facilitating the limiting of the speed regulator.

[0046] A torque detection mechanism 5 is connected to the cabinet 1, and the torque detection mechanism 5 includes a fixed shell 51. The cabinet 1 is connected to the fixed shell 51, and a sleeve 53 is movably connected to the fixed shell 51. The sleeve 53 is plugged into the top end of the rotating shaft of the fork 25. A torque detection motor 52 is installed on the fixed shell 51, and the top end of the sleeve 53 is connected to the rotating shaft of the torque detection motor 52, so as to facilitate the detection of the rotation amplitude and torque of the fork 25.

[0047] In the present invention, the fixed shell 51 is installed on the pressure plate 234, and a third electric push rod 55 is installed on the fixed shell 51. The telescopic end of the third electric push rod 55 is rotatably connected to the sleeve 53. A plug rod 56 is installed on the output shaft of the torque detection motor 52. The plug rod 56 is slidably connected to the sleeve 53. The inner bottom end of the sleeve 53 is rotatably connected with a clamping block 59. The clamping block 59 has an "L"-shaped structure. The top end of the clamping block 59 contacts the top end of the rotating shaft of the fork 25, and the side end of the clamping block 59 contacts the side wall of the rotating shaft of the fork 25, thereby facilitating the docking of the sleeve 53 and the fork 25.

[0048] In the present invention, a second gear 58 is installed on the output shaft of the torque detection motor 52, and a first gear 57 is rotatably connected to the fixed housing 51. The second gear 58 is engaged with the first gear 57. The diameter of the second gear 58 is larger than that of the first gear 57. A pointer 54 is installed on the rotating shaft of the first gear 57, so that the movement of the shift fork 25 can be observed intuitively.

[0049] The cabinet 1 is also connected to a fuel injection detection mechanism 3, which includes a fuel tank 31. The cabinet 1 is connected to the fuel tank 31, and an oil inlet pipe 33 is installed between the fuel filling end of the fuel injection pump 24 and the fuel tank 31. A flow meter 34 is installed on the fuel tank 31, and a fuel injection pipe 32 is installed between the fuel injection end of the fuel injection pump 24 and the flow meter 34, so as to facilitate recording the fuel injection amount of the fuel injection pump 24.

[0050] In the present invention, a recording mechanism 4 is connected to the fixed shell 51, and the recording mechanism 4 includes a mounting box 43. The mounting box 43 is installed on the fixed shell 51, and a top block 46 is slidably connected to the mounting box 43. A paintbrush 44 is inserted into the top block 46. A second spring 47 is installed between the top block 46 and the mounting box 43. A second cam 45 is installed on the rotating shaft of the first gear 57. The outer edge of the second cam 45 contacts the top block 46. A recording card 41 is movably connected to the mounting box 43. The top surface of the recording card 41 contacts the tip of the paintbrush 44. A rotating roller 427 is rotatably connected to the mounting box 43. The rotating roller 427 contacts the surface of the recording card 41, so that the fuel injection amount of the injection pump 24 and the rotation amplitude of the shift fork 25 can be synchronously recorded through the recording card 41, thereby facilitating intuitive data analysis.

[0051] In the present invention, a plurality of protrusions 76 are installed on the outer wall of the rotating roller 427, and a plurality of linearly arranged dot grooves 77 are provided on the recording card 41. The protrusions 76 extend into the dot grooves 77, thereby facilitating the driving of the recording card 41 to move.

[0052] In the present invention, the mounting box 43 is connected to a driving mechanism 7, and the driving mechanism 7 includes a protective shell 71. The protective shell 71 is installed on the mounting box 43, and the shaft end of the rotating roller 427 extends into the interior of the protective shell 71 and is installed with a third gear 72. The protective shell 71 is slidably connected to a push plate 75, and the push plate 75 is slidably connected to a rack 74. The teeth of the rack 74 are serrated, and the rack 74 is unidirectionally meshed with the third gear 72. A fourth spring 73 is installed between the rack 74 and the protective shell 71, so as to facilitate driving the rotating roller 427 to rotate.

[0053] In the present invention, the oil tank 31 is connected to a transmission assembly 42, and the transmission assembly 42 includes a mounting block 422. The mounting block 422 is mounted on the oil tank 31, and the end of the fuel injection pipe 32 is mounted on the bottom end of the mounting block 422. A connecting pipe 423 is mounted on the side wall of the mounting block 422, and the end of the connecting pipe 423 is mounted on the output end of the flow meter 34. A fixed pipe 424 is mounted on the mounting block 422, and the fuel injection pipe 32 is connected to the connecting pipe 423 through the bottom end of the fixed pipe 424. A first piston 426 is installed at the bottom end of the interior, a first spring 425 is installed between the first piston 426 and the fixed tube 424, a connected air pipe 421 is installed on the fixed tube 424, one end of the air pipe 421 is installed on the protective shell 71, a second piston 429 is slidably connected to the interior of the air pipe 421, a push rod 428 is installed at one end of the second piston 429, and one end of the push rod 428 is fixedly connected to the push plate 75, so that the movement speed of the recording card 41 is controlled by the injection amount of the injection pump 24.

[0054] Working principle: When testing the speed regulator, the sliding plate 26 of the speed regulator is inserted into the control shaft 271, and the second electric push rod 273 is controlled to retract, thereby pulling the push block 274 to slide toward the inside of the cabinet 1, driving the sliding plate 26 to move toward the inside of the cabinet 1, and starting the fourth electric push rod 61. The fourth electric push rod 61 extends, pushing the end block 63 and the clamping claw 62 close to the sliding plate 26, so that the clamping claw 62 contacts the sliding end of the sliding plate 26. The rotation speed of the stepping motor 272 is controlled by the controller 21, and the sliding plate 26 is driven to rotate by the control shaft 271. Under the centrifugal action, the ball inside the sliding plate 26 slides outward, thereby causing the sliding end of the sliding plate 26 to move outward, pushing the clamping claw 62 to slide, and the third spring 64 is compressed. The moving distance of the clamping claw 62 can be measured by the laser displacement sensor 65, so that the moving distance of the clamping claw 62 can be measured according to different rotation speeds, which is convenient for testing the performance of the sliding plate 26.

[0055] The speed regulator is placed on the cabinet 1, and the first electric push rod 231 is started, and the pull plate 232 is pulled downward. The pressure plate 234 is driven to contact the speed regulator housing 22 through the fixed column 235, thereby limiting the speed regulator housing 22. The third electric push rod 55 is started, thereby pulling the sleeve 53 downward, so that the sleeve 53 is plugged into the top end of the rotating shaft of the shift fork 25. The rotating shaft of the shift fork 25 pushes the clamping block 59 to rotate. The side end of the clamping block 59 is tightly in contact with the outer wall of the rotating shaft of the shift fork 25, thereby completing the limiting, causing the fourth electric push rod 61 to retract, and the sliding plate 26 is pushed out. The sliding side of the sliding plate 26 contacts the shift fork 25, and the sliding plate 26 and the first cam 2 75 are all equipped with gears, and the sliding plate 26 and the first cam 275 are driven by gears. When the stepping motor 272 controls the sliding plate 26 and the first cam 275 to rotate, the sliding end of the sliding plate 26 pushes the shift fork 25 to swing. The rotational speed of the sliding plate 26 is different when the rotation amplitude of the shift fork 25 is different. The shift fork 25 drives the sleeve 53 to rotate, thereby driving the torque detection motor 52 to rotate through the insertion rod 56, so as to detect the torque and rotation amplitude of the shift fork 25. When the rotating shaft of the torque detection motor 52 rotates, it drives the second gear 58 and the first gear 57 to rotate, thereby driving the pointer 54 to swing, so as to facilitate the intuitive observation of the movement of the shift fork 25.

[0056] The first cam 275 drives the fuel injection pump 24 to work, and the fuel injection pump 24 continuously sprays oil. The oil inside the fuel tank 31 enters the fuel injection pump 24 through the oil inlet pipe 33, is sprayed out through the fuel injection pipe 32, and enters the fuel tank 31 through the flow meter 34, thereby circulating. The flow meter 34 can record the amount of oil pumped each time, which is convenient for comparison with the sliding amount of the sliding plate 26. Through long-term driving detection, the durability of the speed regulator can be analyzed through a large amount of data comparison. When the fuel injection pump 24 pumps out the oil, the oil enters the mounting block 422 through the fuel injection pipe 32, pushing the first piston 426 to slide upward, the first spring 425 is compressed, and when the connecting pipe 423 is exposed, the oil enters the flow meter 34 through the connecting pipe 423. The first spring 425 pushes the first piston 426 downward. The fuel injection pump 24 sprays oil intermittently when working, causing the first piston 426 to jump up and down continuously. The second spring 47 is used to reset the top block 46, so that it is convenient to record different time periods on the recording card 41 through the brush 41.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A performance test device for a fuel injection pump speed regulator, comprising a cabinet (1), characterized in that: The cabinet (1) is connected to a speed regulating installation mechanism (2), the speed regulating installation mechanism (2) includes a speed regulator housing (22), the speed regulator housing (22) is placed on the cabinet (1), an injection pump (24) and a shift fork (25) are installed inside the speed regulator housing (22), the speed regulator housing (22) is equipped with a sliding plate (26), and the cabinet (1) is equipped with a controller (21); The cabinet (1) is connected to a stepper motor (272), an output shaft of the stepper motor (272) is mounted with a control shaft (271), the slide plate (26) is plugged into the control shaft (271), and the cabinet (1) is connected to a first cam (275) that rotates synchronously with the slide plate (26), the first cam (275) abuts against the pressing end of the fuel injection pump (24); The cabinet (1) is connected to a torque detection mechanism (5), the torque detection mechanism (5) comprises a fixed shell (51), the cabinet (1) is connected to the fixed shell (51), a sleeve (53) is movably connected to the fixed shell (51), the sleeve (53) is plugged into the top end of the rotating shaft of the shift fork (25), a torque detection motor (52) is installed on the fixed shell (51), and the top end of the sleeve (53) is connected to the rotating shaft of the torque detection motor (52); The cabinet (1) is connected to an oil injection detection mechanism (3), the oil injection detection mechanism (3) includes an oil tank (31), the cabinet (1) is connected to the oil tank (31), an oil inlet pipe (33) is installed between the oil injection end of the oil injection pump (24) and the oil tank (31), a flow meter (34) is installed on the oil tank (31), and an oil injection pipe (32) is installed between the oil injection end of the oil injection pump (24) and the flow meter (34); The cabinet (1) is connected to a control assembly (27), the control assembly (27) includes a push block (274), the cabinet (1) is slidably connected to the push block (274), the stepping motor (272) is mounted on the push block (274), a second electric push rod (273) is mounted on the cabinet (1), and the end of the push block (274) is mounted on the telescopic end of the second electric push rod (273); The cabinet (1) is provided with a thrust detection mechanism (6), the thrust detection mechanism (6) comprising a fourth electric push rod (61), the cabinet (1) being provided with a fourth electric push rod (61), the telescopic end of the fourth electric push rod (61) being provided with an end block (63), the end block (63) being slidably connected with a clamping claw (62), a third spring (64) being provided between the clamping claw (62) and the end block (63), one end of the end block (63) being provided with a laser displacement sensor (65), and the clamping claw (62) being used to contact one side of the sliding plate (26).

2. The performance testing device for the fuel injection pump speed regulator according to claim 1, characterized in that: The cabinet (1) is connected to a limit assembly (23), the limit assembly (23) comprising a first electric push rod (231), the top of the cabinet (1) being mounted with the first electric push rod (231), the telescopic end of the first electric push rod (231) being mounted with a pull plate (232), the bottom end of the pull plate (232) being provided with a pressure plate (234), a fixing column (235) being mounted between the pull plate (232) and the pressure plate (234), the bottom end of the pressure plate (234) being in close contact with the top end of the speed regulator housing (22).

3. The performance testing device for the fuel injection pump speed regulator according to claim 2, characterized in that: The fixed shell (51) is mounted on the pressure plate (234), and a third electric push rod (55) is mounted on the fixed shell (51). The telescopic end of the third electric push rod (55) is rotatably connected to the sleeve (53). An insertion rod (56) is mounted on the output shaft of the torque detection motor (52), and the insertion rod (56) is slidably connected to the sleeve (53). The inner bottom end of the sleeve (53) is rotatably connected to a clamping block (59). The clamping block (59) is in an "L"-shaped structure. The top end of the clamping block (59) contacts the top end of the rotating shaft of the shift fork (25), and the side end of the clamping block (59) contacts the side wall of the rotating shaft of the shift fork (25).

4. The performance testing device for the fuel injection pump speed regulator according to claim 3, characterized in that: A second gear (58) is mounted on the output shaft of the torque detection motor (52), a first gear (57) is rotatably connected to the fixed housing (51), the second gear (58) is meshed with the first gear (57), the diameter of the second gear (58) is larger than that of the first gear (57), and a pointer (54) is mounted on the rotating shaft of the first gear (57).

5. The performance testing device for the fuel injection pump speed regulator according to claim 4, characterized in that: The fixed shell (51) is connected to a recording mechanism (4), and the recording mechanism (4) includes a mounting box (43). The fixed shell (51) is installed with a mounting box (43). A top block (46) is slidably connected to the mounting box (43), a paintbrush (44) is inserted into the top block (46), a second spring (47) is installed between the top block (46) and the mounting box (43), a second cam (45) is installed on the rotating shaft of the first gear (57), an outer edge of the second cam (45) contacts the top block (46), a recording card (41) is movably connected to the mounting box (43), a top surface of the recording card (41) contacts the tip of the paintbrush (44), a rotating roller (427) is rotatably connected to the mounting box (43), and the rotating roller (427) contacts the surface of the recording card (41).

6. The performance testing device for the fuel injection pump speed regulator according to claim 5, characterized in that: The outer wall of the rotating roller (427) is provided with a plurality of protrusions (76), and the recording card (41) is provided with a plurality of linearly arranged dot grooves (77), and the protrusions (76) extend into the dot grooves (77).

7. The performance testing device for the fuel injection pump speed regulator according to claim 6, characterized in that: The mounting box (43) is connected to a driving mechanism (7), the driving mechanism (7) includes a protective shell (71), the mounting box (43) is mounted with a protective shell (71), the shaft end of the rotating roller (427) extends into the interior of the protective shell (71) and is mounted with a third gear (72), the protective shell (71) is slidably connected to a push plate (75), the push plate (75) is slidably connected to a rack (74), the teeth of the rack (74) are sawtooth-shaped, the rack (74) is unidirectionally meshed with the third gear (72), and a fourth spring (73) is mounted between the rack (74) and the protective shell (71).

8. The performance testing device for the fuel injection pump speed regulator according to claim 7, characterized in that: The oil tank (31) is connected to a transmission assembly (42), the transmission assembly (42) includes a mounting block (422), the oil tank (31) is mounted with a mounting block (422), the end of the oil injection pipe (32) is mounted on the bottom end of the mounting block (422), a connecting pipe (423) is mounted on the side wall of the mounting block (422), the end of the connecting pipe (423) is mounted on the output end of the flow meter (34), a fixed pipe (424) is mounted on the mounting block (422), the oil injection pipe (32) is connected to the bottom end of the fixed pipe (424) and the connecting pipe ( 423), a first piston (426) is installed at the bottom end of the interior of the fixed tube (424), a first spring (425) is installed between the first piston (426) and the fixed tube (424), a connected air pipe (421) is installed on the fixed tube (424), one end of the air pipe (421) is installed on the protective shell (71), a second piston (429) is slidably connected to the interior of the air pipe (421), one end of the second piston (429) is installed with a push rod (428), and one end of the push rod (428) is fixedly connected to the push plate (75).

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