Performance testing device of fuel injection pump speed regulator

Abstract

The invention discloses a performance testing device for a fuel injection pump speed regulator, relates to the technical field of diesel engine speed regulator testing equipment, and provides the following scheme that the performance testing device comprises a cabinet body, a stepping motor is connected to the cabinet body, a fixed shell is connected to the cabinet body, a sleeve is movably connected to the fixed shell, and a torque detection motor is installed on the fixed shell; the cabinet body is connected with an oil tank, the oil tank is provided with a flow meter, and the fixed shell is connected with a recording card; the moving distance of the clamping jaw can be measured through the laser displacement sensor, the moving distance of the clamping jaw can be conveniently measured according to different rotating speeds, the performance of the sliding disc can be conveniently detected, the sliding end of the sliding disc pushes the shifting fork to swing, the inserting rod drives the torque detection motor to rotate, and therefore the torque and the rotating amplitude of the shifting fork are detected; the flow meter can record the amount of pumped oil every time, when the recording card moves, the painting brush will draw lines on the recording card, and the rotation amplitude of the shifting fork can be conveniently recorded on the recording card through the painting brush at different time periods and different rotation speeds.

Description

Technical Field

[0001] The present invention relates to the technical field of diesel engine governor test equipment, and particularly to a performance test device for a fuel injection pump governor. Background Art

[0002] A governor is an automatic regulating device that automatically increases or decreases the fuel supply of a fuel injection pump according to the change of the load of a diesel engine, so that the diesel engine can operate at a stable speed. The sliding disk type governor is a common governor for a diesel engine fuel injection pump. During the performance test of the fuel injection pump governor, a test device is required.

[0003] After retrieval, a Chinese invention patent application with the publication number CN119666335A discloses an electro-hydraulic governor test device and a test method. The invention includes a governor test bench for driving the output shaft of a test piece to rotate. A torque loading motor is arranged on the governor test bench. The motor shaft of the torque loading motor faces the test piece. The motor shaft of the torque loading motor and the test piece are relatively connected through a torque connection component. The torque loading motor loads the test piece. A control component is arranged on one side of the governor test bench. The control component is signal-connected to the torque loading motor and the test piece. This application has the effects of shortening the time for assembling it onto a diesel engine to carry out reliability tests to save costs, and being able to configure corresponding test parameters according to actual application working conditions, making the carried-out durability and reliability tests closer to the actual application working conditions.

[0004] However, in the actual use process, the above and similar technical solutions still have some problems: 1. The above governor test device is designed specifically for detecting the output torque of an electro-hydraulic governor, and its functional architecture and detection mechanism are not adapted to the detection requirements of a sliding disk type governor. Specifically, the device is not equipped with a special mechanism for detecting the sliding distance of the sliding disk type governor. Therefore, there are functional limitations in the relevant tests of the sliding disk type governor. 2. In the detection process of the sliding disk type governor, the existing test means are difficult to accurately record and detect the swing amplitude of the fork and the torque parameters. This is mainly due to the lack of corresponding measuring mechanisms and data acquisition systems, resulting in the inability to effectively obtain and quantify these key performance indicators. 3. For the data obtained during the test, the current test device lacks an intuitive data visualization observation mechanism and an efficient data recording mechanism. This defect makes it difficult for test personnel to quickly comprehensively analyze and evaluate the measurement data, thereby affecting the test efficiency and the accuracy of the results. Summary of the Invention

[0005] To overcome the deficiencies in the prior art, the present invention provides a performance testing device for a fuel injection pump governor, which facilitates the measurement of the governor sliding disc, the recording of the rotation amplitude and torque of the fork, and the recording of data.

[0006] To achieve the above object, a performance testing device for a fuel injection pump governor disclosed by the present invention includes a cabinet body, a governor installation mechanism is connected to the cabinet body. The governor installation mechanism includes a governor housing, and the governor housing is placed on the cabinet body. A fuel injection pump and a fork are installed inside the governor housing. The governor housing is equipped with a sliding disc, and the cabinet body is equipped with a controller; A stepping motor is connected to the cabinet body, a control shaft is installed on the output shaft of the stepping motor, the sliding disc is inserted on the control shaft, a first cam that rotates synchronously with the sliding disc is connected to the cabinet body, and the first cam abuts against the pressing end of the fuel injection pump; A torque detection mechanism is connected to the cabinet body. The torque detection mechanism includes a fixed housing. The cabinet body is connected with the fixed housing. A sleeve is movably connected to the fixed housing. The sleeve is inserted into the top end of the rotating shaft of the fork. A torque detection motor is installed on the fixed housing, and the top end of the sleeve is connected to the rotating shaft of the torque detection motor; An oil injection detection mechanism is connected to the cabinet body. The oil injection detection mechanism includes a fuel tank. The fuel tank is connected to the cabinet body. An oil inlet pipe is installed between the oil injection end of the fuel injection pump and the fuel tank. A flow meter is installed on the fuel tank. An oil injection pipe is installed between the oil injection end of the fuel injection pump and the flow meter.

[0007] Preferably, the cabinet body is connected with a control component. The control component includes a push block. The push block is slidably connected to the cabinet body. The stepping motor is installed on the push block. A second electric push rod is installed on the cabinet body. The end of the push block is installed on the telescopic end of the second electric push rod.

[0008] Preferably, a thrust detection mechanism is installed on the cabinet body. The thrust detection mechanism includes a fourth electric push rod. The fourth electric push rod is installed on the cabinet body. An end block is installed on the telescopic end of the fourth electric push rod. A clamping jaw is slidably connected to the end block. A third spring is installed between the clamping jaw and the end block. A laser displacement sensor is installed at one end of the end block. The clamping jaw is used to abut against one side of the sliding disc.

[0009] Preferably, a limiting component is connected to the cabinet body. The limiting component includes a first electric push rod. The first electric push rod is installed at the top of the cabinet body. A pulling plate is installed on the telescopic end of the first electric push rod. A pressing plate is provided at the bottom end of the pulling plate. A fixing column is installed between the pulling plate and the pressing plate. The bottom end of the pressing plate is in close contact with the top end of the governor housing.

[0010] Preferably, the fixed shell is installed on the pressing plate. 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. A plug rod is installed on the output shaft of the torque detection motor. The plug rod is slidably connected to the sleeve. The inner bottom end of the sleeve is rotatably connected to a clamping block. The clamping block is in an "L" shape. The top end of the clamping block abuts against the top end of the rotating shaft of the fork. The side end of the clamping block abuts against the side wall of the rotating shaft of the fork.

[0011] 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 meshes with the first gear. The diameter of the second gear is larger than that of the first gear. A pointer is installed on the rotating shaft of the first gear.

[0012] Preferably, a recording mechanism is connected to the fixed shell. The recording mechanism includes an installation box. The installation box is installed on the fixed shell. A top block is slidably connected to the installation box. A paintbrush is inserted into the top block. A second spring is installed between the top block and the installation box. A second cam is installed on the rotating shaft of the first gear. The outer edge of the second cam abuts against the top block. A recording card is movably inserted into the installation box. The top surface of the recording card abuts against the tip of the paintbrush. A rotating roller is rotatably connected to the installation box. The rotating roller abuts against the surface of the recording card.

[0013] Preferably, a plurality of convex points are installed on the outer wall of the rotating roller. A plurality of linearly arranged dot grooves are provided on the recording card. The convex points extend into the dot grooves.

[0014] Preferably, a driving mechanism is connected to the installation box. The driving mechanism includes a protective shell. The protective shell is installed on the installation box. The shaft end of the rotating roller extends into the protective shell and is installed with a third gear. A push plate is slidably connected to the protective shell. A rack is slidably connected to the push plate. The teeth of the rack are serrated. The rack is unidirectionally meshed with the third gear. A fourth spring is installed between the rack and the protective shell.

[0015] Preferably, a transmission assembly is connected to the fuel tank. The transmission assembly includes an installation block. The installation block is installed on the fuel tank. The end of the fuel injection pipe is installed at the bottom end of the installation block. A connecting pipe is installed on the side wall of the installation block. The end of the connecting pipe is installed on the output end of the flowmeter. A fixed pipe is installed on the installation block. The fuel injection pipe communicates 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. An air pipe is installed on the fixed pipe and is communicated. One end of the air pipe is installed on the protective shell. A second piston is slidably connected to the inside of the air pipe. A top rod is installed at one end of the second piston. One end of the top rod is fixedly connected to the push plate.

[0016] The present invention has the following technical effects: 1. For the performance testing device of the fuel injection pump governor, when detecting the governor, it controls the sliding block to slide into the cabinet, drives the sliding plate to move into the cabinet, starts the fourth electric push rod, pushes the end block and the clamp jaw close to the sliding plate, makes the clamp jaw contact with the sliding end of the sliding plate, controls the rotation speed of the stepping motor through the controller, drives the sliding plate to rotate through the control shaft, and the balls inside the sliding plate slide outwards under the centrifugal force, so that the sliding end of the sliding plate moves outwards, pushes the clamp jaw to slide, and the moving distance of the clamp jaw can be measured by the laser displacement sensor, so as to facilitate measuring the moving distance of the clamp jaw according to different rotation speeds and facilitating the detection of the performance of the sliding plate.

[0017] 2. For the performance testing device of the fuel injection pump governor, place the governor on the cabinet, make the sleeve plug into the top of the rotating shaft of the fork, push out the sliding plate, the sliding side of the sliding plate contacts with the fork, gears are equipped on both the sliding plate and the first cam, the sliding plate and the first cam are driven by gears, when the stepping motor controls the rotation of the sliding plate and the first cam, the sliding end of the sliding plate pushes the fork to swing, and the rotation amplitude of the fork is different when the rotation speed of the sliding plate is different, the fork drives the sleeve to rotate, and then drives the torque detection motor to rotate through the inserting rod, so as to detect the torque and rotation amplitude of the fork. When the rotating shaft of the torque detection motor rotates, it drives the second gear and the first gear to rotate, and then drives the pointer to swing, facilitating the intuitive observation of the movement of the fork.

[0018] 3. For the performance testing device of the fuel injection pump governor, the first cam pushes the fuel injection pump to work, the oil is sprayed out through the fuel injection pipe, enters the fuel tank through the flow meter, and the flow meter can record the amount of oil pumped each time, so as to facilitate the comparison with the sliding amount of the sliding plate. The oil enters the installation block through the fuel injection pipe, pushes the first piston to slide upwards, and under the air pressure, drives the third gear to rotate by pushing the push plate and the rack, so as to drive the rotating roller to rotate intermittently. The recording card moves unidirectionally through the bumps and grooves, and the paintbrush will draw a line on the recording card, so as to facilitate recording the rotation amplitude of the fork at different time periods and different rotation speeds on the recording card through the paintbrush, facilitating data comparison and analysis, and the recording card can make the data more intuitive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of a performance testing device for a fuel injection pump governor proposed by the present invention; Figure 2 is a view of the connection structure of the governor housing of the present invention; Figure 3 is a view of the connection structure of the fuel injection pump of the present invention; Figure 4 is a view of the connection structure of the fixed housing of the present invention; Figure 5View of the fuel tank connection structure of the present invention; Figure 6 View of the fixed pipe connection structure of the present invention; Figure 7 View of the push block connection structure of the present invention; Figure 8 View of the end block connection structure of the present invention; Figure 9 View of the sleeve connection structure of the present invention; Figure 10 View of the torque detection motor connection structure of the present invention; Figure 11 View of the clamping block connection structure of the present invention; Figure 12 View of the second cam connection structure of the present invention; Figure 13 View of the third gear connection structure of the present invention; Figure 14 View of the record card structure of the present invention.

[0020] In the figure, 1, cabinet; 2, speed regulation installation mechanism; 21, controller; 22, speed governor housing; 23, limit component; 231, first electric push rod; 232, pull plate; 234, pressure plate; 235, fixed column; 24, fuel injection pump; 25, fork; 26, sliding disk; 27, control component; 271, control shaft; 272, stepping 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, inlet pipe; 34, flow meter; 4, recording mechanism; 41, record card; 42, transmission component; 421, air pipe; 422, mounting block; 423, connecting pipe; 424, fixed pipe; 425, first spring; 426, first piston; 427, rotating roller; 428, ejector rod; 429, second piston; 43, mounting box; 44, paintbrush; 45, second cam; 46, top 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, insertion rod; 57, first gear; 58, second gear; 59, clamping block; 6, thrust detection mechanism; 61, fourth electric push rod; 62, clamping jaw; 63, end block; 64, third spring; 65, laser displacement sensor; 7, driving mechanism; 71, protective shell; 72, third gear; 73, fourth spring; 74, rack; 75, push plate; 76, bump; 77, dot groove. Detailed implementation mode

[0021] The following is combined with the attached Figure 1 to the attached Figure 14The principles and features of the present invention are described in this embodiment; the examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0022] A performance testing device for a fuel injection pump governor, comprising a cabinet body 1, a governor installation mechanism 2 is connected to the cabinet body 1. The governor installation mechanism 2 includes a governor housing 22. The governor housing 22 is placed on the cabinet body 1. A fuel injection pump 24 and a fork 25 are installed inside the governor housing 22. The governor housing 22 is equipped with a sliding disk 26. The cabinet body 1 is equipped with a controller 21. A stepping motor 272 is connected to the cabinet body 1. A control shaft 271 is installed on the output shaft of the stepping motor 272. The sliding disk 26 is inserted on the control shaft 271. A first cam 275 that rotates synchronously with the sliding disk 26 is connected to the cabinet body 1. The first cam 275 abuts against the pressing end of the fuel injection pump 24, so as to facilitate imitating the engine to drive the sliding disk 26 to work and control the rotation speed of the sliding disk 26. In the present invention, the cabinet body 1 is connected with a control component 27. The control component 27 includes a push block 274. The push block 274 is slidably connected to the cabinet body 1. The stepping motor 272 is installed on the push block 274. A second electric push rod 273 is installed on the cabinet body 1. The end of the push block 274 is installed on the telescopic end of the second electric push rod 273, so as to facilitate the docking of the sliding disk 26 and the fork 25.

[0023] In the present invention, a thrust detection mechanism 6 is installed on the cabinet body 1. 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. An end block 63 is installed on the telescopic end of the fourth electric push rod 61. A jaw 62 is slidably connected to the end block 63. A third spring 64 is installed between the jaw 62 and the end block 63. A laser displacement sensor 65 is installed at one end of the end block 63. The jaw 62 is used to abut against one side of the sliding disk 26, so as to facilitate detecting the distance that the sliding end of the sliding disk 26 slides out.

[0024] In the present invention, a limiting component 23 is connected to the cabinet body 1. The limiting component 23 includes a first electric push rod 231. The first electric push rod 231 is installed at the top of the cabinet body 1. A pull plate 232 is installed on the telescopic end of the first electric push rod 231. A pressing plate 234 is provided at the bottom of the pull plate 232. A fixing column 235 is installed between the pull plate 232 and the pressing plate 234. The bottom of the pressing plate 234 is in close contact with the top of the governor housing 22, so as to facilitate limiting the governor. A torque detection mechanism 5 is connected to the cabinet body 1. The torque detection mechanism 5 includes a fixed housing 51. The cabinet body 1 is connected with the fixed housing 51. A sleeve 53 is movably connected to the fixed housing 51. The sleeve 53 is inserted into the top end of the rotating shaft of the fork 25. A torque detection motor 52 is installed on the fixed housing 51. The top end of the sleeve 53 is connected to the rotating shaft of the torque detection motor 52, so as to facilitate detecting the rotation amplitude and torque of the fork 25.

[0025] In the present invention, the fixed shell 51 is installed on the pressing plate 234. 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 to a clamping block 59. The clamping block 59 is in an "L" shape. The top end of the clamping block 59 abuts against the top end of the rotating shaft of the fork 25, and the side end of the clamping block 59 abuts against the side wall of the rotating shaft of the fork 25, thus facilitating the docking of the sleeve 53 and the fork 25. In the present invention, a second gear 58 is installed on the output shaft of the torque detection motor 52. A first gear 57 is rotatably connected to the fixed shell 51. The second gear 58 meshes 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, thus facilitating the intuitive observation of the movement of the fork 25.

[0026] An oil injection detection mechanism 3 is further connected to the cabinet body 1. The oil injection detection mechanism 3 includes an oil tank 31. The oil tank 31 is connected to the cabinet body 1. An oil inlet pipe 33 is installed between the oil injection end of the fuel injection pump 24 and the oil tank 31. A flow meter 34 is installed on the oil tank 31. An oil injection pipe 32 is installed between the oil injection end of the fuel injection pump 24 and the flow meter 34, thus facilitating the recording of the fuel injection volume of the fuel injection pump 24.

[0027] In the present invention, a recording mechanism 4 is connected to the fixed shell 51. The recording mechanism 4 includes an installation box 43. The installation box 43 is installed on the fixed shell 51. A top block 46 is slidably connected to the installation 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 installation 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 abuts against the top block 46. A recording card 41 is movably inserted into the installation box 43. The top surface of the recording card 41 abuts against the tip of the paintbrush 44. A rotating roller 427 is rotatably connected to the installation box 43. The rotating roller 427 abuts against the surface of the recording card 41, thus facilitating the synchronous recording of the fuel injection volume of the fuel injection pump 24 and the rotation amplitude of the fork 25 through the recording card 41, and thus facilitating the intuitive data analysis.

[0028] In the present invention, a plurality of convex points 76 are installed on the outer wall of the rotating roller 427. A plurality of dot grooves 77 arranged linearly are provided on the recording card 41. The convex points 76 extend into the dot grooves 77, thus facilitating the driving of the movement of the recording card 41.

[0029] In the present invention, a driving mechanism 7 is connected to the mounting box 43. The driving mechanism 7 includes a protective housing 71 which is mounted on the mounting box 43. The shaft end of the rotating roller 427 extends into the interior of the protective housing 71 and is provided with a third gear 72. A push plate 75 is slidably connected to the protective housing 71, and a rack 74 is slidably connected to the push plate 75. The teeth of the rack 74 are serrated, and the rack 74 is in one-way meshing with the third gear 72. A fourth spring 73 is installed between the rack 74 and the protective housing 71, thus facilitating the rotation of the rotating roller 427.

[0030] In the present invention, a transmission assembly 42 is connected to the fuel tank 31. The transmission assembly 42 includes a mounting block 422 which is mounted on the fuel tank 31. The end of the fuel injection pipe 32 is installed at the bottom end of the mounting block 422. A connecting pipe 423 is installed on the side wall of the mounting block 422, and the end of the connecting pipe 423 is installed on the output end of the flow meter 34. A fixed pipe 424 is installed on the mounting block 422, and the fuel injection pipe 32 communicates with the connecting pipe 423 through the bottom end of the fixed pipe 424. A first piston 426 is installed at the inner bottom end of the fixed pipe 424, and a first spring 425 is installed between the first piston 426 and the fixed pipe 424. A communicating air pipe 421 is installed on the fixed pipe 424, and one end of the air pipe 421 is installed on the protective housing 71. A second piston 429 is slidably connected to the interior of the air pipe 421, and a push rod 428 is installed at one end of the second piston 429. One end of the push rod 428 is fixedly connected to the push plate 75, thus controlling the movement speed of the recording card 41 by the fuel injection amount of the fuel injection pump 24.

[0031] Working principle: When detecting the governor, insert the sliding disk 26 of the governor onto the control shaft 271, control the second electric push rod 273 to contract, thereby pulling the push block 274 to slide into the cabinet body 1, driving the sliding disk 26 to move into the cabinet body 1. Start the fourth electric push rod 61, and the fourth electric push rod 61 extends, pushing the end block 63 and the clamping jaw 62 close to the sliding disk 26, so that the clamping jaw 62 abuts against the sliding end of the sliding disk 26. Control the rotation speed of the stepping motor 272 through the controller 21, drive the sliding disk 26 to rotate through the control shaft 271. Under the centrifugal action, the balls inside the sliding disk 26 slide outwards, so that the sliding end of the sliding disk 26 moves outwards, pushing the clamping jaw 62 to slide, and the third spring 64 is compressed. The moving distance of the clamping jaw 62 can be measured by the laser displacement sensor 65, thus facilitating the measurement of the moving distance of the clamping jaw 62 according to different rotation speeds and facilitating the detection of the performance of the sliding disk 26. Place the speed governor on the cabinet 1, start the first electric push rod 231, pull the pull plate 232 downward, drive the pressure plate 234 to contact the speed governor housing 22 through the fixed column 235, so as to limit the speed governor housing 22. Start the third electric push rod 55, and then pull the sleeve 53 downward to make the sleeve 53 inserted into the top end of the rotating shaft of the fork 25. The rotating shaft of the fork 25 pushes the clamping block 59 to rotate, and the side end of the clamping block 59 is in close contact with the outer wall of the rotating shaft of the fork 25, thus completing the limit. Make the fourth electric push rod 61 contract to push out the sliding disk 26. The sliding side of the sliding disk 26 contacts the fork 25. Both the sliding disk 26 and the first cam 275 are equipped with gears, and the sliding disk 26 and the first cam 275 are driven by gears. When the stepping motor 272 controls the rotation of the sliding disk 26 and the first cam 275, the sliding end of the sliding disk 26 pushes the fork 25 to swing. When the rotation speed of the sliding disk 26 is different, the rotation amplitude of the fork 25 is different. The fork 25 drives the sleeve 53 to rotate, and then drives the torque detection motor 52 to rotate through the insertion rod 56, so as to detect the torque and rotation amplitude of the 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, thus driving the pointer 54 to swing, which is convenient for intuitively observing the movement of the fork 25. The first cam 275 pushes the fuel injection pump 24 to work. The fuel injection pump 24 continuously injects fuel. The fuel in the fuel tank 31 enters the fuel injection pump 24 through the fuel inlet pipe 33, is sprayed out through the fuel injection pipe 32, and enters the fuel tank 31 through the flow meter 34, so as to circulate. The flow meter 34 can record the amount of fuel pumped each time, so as to facilitate comparison with the sliding amount of the sliding disk 26. Through long-term driving detection, the durability of the speed governor can be analyzed by comparing a large amount of data. When the fuel injection pump 24 pumps out the fuel, the fuel enters the installation block 422 through the fuel injection pipe 32, pushes the first piston 426 to slide upward, and the first spring 425 is compressed. When the connecting pipe 423 is exposed, the fuel enters the flow meter 34 through the connecting pipe 423, and the first spring 425 pushes the first piston 426 to move downward. When the fuel injection pump 24 works, it injects fuel intermittently, so that the first piston 426 continuously moves up and down. Under the action of air pressure, the air pressure in the air pipe 421 continuously pushes the second piston 429 back and forth, thus pushing the ejector rod 428, pushing the push plate 75 and the rack 74. The teeth of the rack 74 are serrated, so as to unidirectionally push the third gear 72 to rotate. The fourth spring 73 is used for the rack 74 to reset downward, thus driving the rotating roller 427 to rotate intermittently. Through the convex points 76 and the dot grooves 77, the recording card 41 is pushed to move unidirectionally, and the paintbrush 44 will draw a line on the recording card 41. When the first gear 57 rotates, it drives the second cam 45 to rotate, thus pushing the top block 46 to move back and forth, driving the paintbrush 44 to move back and forth. The second spring 47 is used for the top block 46 to reset, so as to facilitate recording the rotation amplitude of the fork 25 at different time periods and different rotation speeds on the recording card 41 through the paintbrush 44, which is convenient for data comparison and analysis, and the recording card 41 can make the data more intuitive. The above are only the preferred embodiments of the present invention; they are not intended to limit the present invention; any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A performance testing device for a fuel injection pump governor, comprising a cabinet body (1), characterized in that: A speed regulation installation mechanism (2) is connected to the cabinet body (1). The speed regulation installation mechanism (2) includes a speed governor housing (22). The speed governor housing (22) is placed on the cabinet body (1). A fuel injection pump (24) and a fork (25) are installed inside the speed governor housing (22). The speed governor housing (22) is equipped with a sliding disk (26), and the cabinet body (1) is equipped with a controller (21). A stepping motor (272) is connected to the cabinet body (1). A control shaft (271) is installed on the output shaft of the stepping motor (272). The sliding disk (26) is inserted on the control shaft (271). A first cam (275) that rotates synchronously with the sliding disk (26) is connected to the cabinet body (1). The first cam (275) abuts against the pressing end of the fuel injection pump (24). A torque detection mechanism (5) is connected to the cabinet body (1). The torque detection mechanism (5) includes a fixed housing (51). The fixed housing (51) is connected to the cabinet body (1). A sleeve (53) is movably connected to the fixed housing (51). The sleeve (53) is inserted into the top end of the rotating shaft of the fork (25). A torque detection motor (52) is installed on the fixed housing (51). The top end of the sleeve (53) is connected to the rotating shaft of the torque detection motor (52). An oil injection detection mechanism (3) is connected to the cabinet body (1). The oil injection detection mechanism (3) includes a fuel tank (31). The fuel tank (31) is connected to the cabinet body (1). An oil inlet pipe (33) is installed between the fuel injection end of the fuel injection pump (24) and the fuel tank (31). A flow meter (34) is installed on the fuel tank (31). An oil injection pipe (32) is installed between the oil injection end of the fuel injection pump (24) and the flow meter (34).

2. The performance testing device of the fuel injection pump governor according to claim 1, characterized in that, The cabinet body (1) is connected to a control component (27). The control component (27) includes a push block (274). The push block (274) is slidably connected to the cabinet body (1). The stepping motor (272) is installed on the push block (274). A second electric push rod (273) is installed on the cabinet body (1). The end of the push block (274) is installed on the telescopic end of the second electric push rod (273).

3. The performance testing device for the fuel injection pump governor according to claim 2, characterized in that, A thrust detection mechanism (6) is installed on the cabinet body (1). 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). An end block (63) is installed on the telescopic end of the fourth electric push rod (61). A clamping jaw (62) is slidably connected to the end block (63). A third spring (64) is installed between the clamping jaw (62) and the end block (63). A laser displacement sensor (65) is installed at one end of the end block (63). The clamping jaw (62) is used to abut against one side of the sliding disk (26).

4. The performance testing device for the fuel injection pump governor according to claim 3, characterized in that, A limiting component (23) is connected to the cabinet body (1). The limiting component (23) includes a first electric push rod (231). The first electric push rod (231) is installed at the top end of the cabinet body (1). A pulling plate (232) is installed on the telescopic end of the first electric push rod (231). A pressing plate (234) is provided at the bottom end of the pulling plate (232). A fixing column (235) is installed between the pulling plate (232) and the pressing plate (234). The bottom end of the pressing plate (234) is in close contact with the top end of the speed regulator housing (22).

5. The performance testing device for the fuel injection pump governor according to claim 4, characterized in that, The fixing shell (51) is installed on the pressing plate (234). A third electric push rod (55) is installed on the fixing 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). A clamping block (59) is rotatably connected to the inner bottom end of the sleeve (53). The clamping block (59) is in an "L" shape structure. The top end of the clamping block (59) is in contact with the top end of the rotating shaft of the fork (25). The side end of the clamping block (59) is in contact with the side wall of the rotating shaft of the fork (25).

6. The performance testing device for the fuel injection pump governor according to claim 5, characterized in that, A second gear (58) is installed on the output shaft of the torque detection motor (52). A first gear (57) is rotatably connected to the fixing shell (51). The second gear (58) meshes 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).

7. The performance testing device for the fuel injection pump governor according to claim 6, characterized in that, A recording mechanism (4) is connected to the fixing shell (51). The recording mechanism (4) includes an installation box (43). The installation box (43) is installed on the fixing shell (51). A top block (46) is slidably connected to the installation 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 installation 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) is in contact with the top block (46). A recording card (41) is movably inserted into the installation box (43). The top surface of the recording card (41) is in contact with the tip of the paintbrush (44). A rotating roller (427) is rotatably connected to the installation box (43). The rotating roller (427) is in contact with the surface of the recording card (41).

8. The performance testing device of the fuel injection pump governor according to claim 7, characterized in that, A plurality of convex points (76) are installed on the outer wall of the rotating roller (427). A plurality of dot grooves (77) arranged linearly are provided on the recording card (41). The convex points (76) extend into the dot grooves (77).

9. The performance testing device for the fuel injection pump governor according to claim 8, characterized in that, A driving mechanism (7) is connected to the installation box (43). The driving mechanism (7) includes a protective shell (71). The protective shell (71) is installed on the installation box (43). The shaft end of the rotating roller (427) extends into the protective shell (71) and a third gear (72) is installed. A push plate (75) is slidably connected to the protective shell (71). A rack (74) is slidably connected to the push plate (75). The teeth of the rack (74) are serrated. The rack (74) is unidirectionally engaged with the third gear (72). A fourth spring (73) is installed between the rack (74) and the protective shell (71).

10. The performance testing device for the fuel injection pump governor according to claim 9, characterized in that, A transmission component (42) is connected to the fuel tank (31). The transmission component (42) includes a mounting block (422). The mounting block (422) is installed on the fuel tank (31). The end of the fuel injection pipe (32) is installed at the bottom end of the mounting block (422). A connecting pipe (423) is installed on the side wall of the mounting block (422). The end of the connecting pipe (423) is installed on the output end of the flowmeter (34). A fixed pipe (424) is installed on the mounting block (422). The fuel injection pipe (32) is communicated with the connecting pipe (423) through the bottom end of the fixed pipe (424). A first piston (426) is installed at the inner bottom end of the fixed pipe (424). A first spring (425) is installed between the first piston (426) and the fixed pipe (424). A communicating air pipe (421) is installed on the fixed pipe (424). One end of the air pipe (421) is installed on the protective shell (71). A second piston (429) is slidably connected inside the air pipe (421). A push rod (428) is installed at one end of the second piston (429). One end of the push rod (428) is fixedly connected to the push plate (75).

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