Electro-hydraulic speed regulator testing device and testing method

Abstract

The invention relates to an electro-hydraulic speed regulator testing device, and relates to the field of diesel engine speed regulator testing equipment, the electro-hydraulic speed regulator testing device comprises a speed regulator testing table for driving an output shaft of a to-be-tested piece to rotate, the speed regulator testing table is provided with a torque loading motor, and a motor shaft of the torque loading motor is opposite to the to-be-tested piece. A motor shaft of the torque loading motor is oppositely connected with a to-be-tested piece through a torque connecting assembly, the torque loading motor loads the to-be-tested piece, one side of the speed regulator test bench is provided with a control assembly, and the control assembly is in signal connection with the torque loading motor and the to-be-tested piece. The device can shorten the time for assembling the device on a diesel engine to carry out a reliability test so as to save the cost; and corresponding test parameters can be configured according to actual application working conditions, so that the developed durability and reliability test is closer to the actual application working conditions.

Description

Technical Field

[0001] The present application relates to the field of diesel engine speed governor testing equipment, and in particular to an electro-hydraulic speed governor testing device and a testing method. Background Art

[0002] In the mechanical fuel injection system, it is used to adjust the amount of fuel injection, thereby controlling the speed and output power of the diesel engine. Although with the development of technology, electronic control systems are increasingly used in automobiles and mechanical equipment, electro-hydraulic speed governors are still widely used in some high-power medium-speed diesel engines to adjust the amount of fuel injection. The electro-hydraulic speed governor has the advantages of large output torque, fast response speed, and high adjustment accuracy, which makes it widely used in high-power medium-speed diesel engines. Through the electro-hydraulic speed governor, the speed of the diesel engine can be accurately controlled to meet the power requirements under complex working conditions. In these application scenarios, the mechanical fuel injection system combined with the electro-hydraulic speed governor can better adapt to the working requirements under harsh conditions such as high load, high power output and long-term operation.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the existing speed regulator test bench can only perform factory tests on the functionality of the electro-hydraulic speed regulator, but cannot carry out durability and reliability tests on the newly designed and developed electro-hydraulic speed regulator that meet actual application conditions. Summary of the invention

[0004] In order to shorten the time for assembling it on a diesel engine and conducting reliability tests to save costs; the corresponding test parameters can be configured according to the actual application conditions so that the durability and reliability tests carried out are closer to the actual application conditions. The present application provides an electro-hydraulic speed governor testing device and testing method.

[0005] The present application provides an electro-hydraulic speed regulator testing device, which adopts the following technical solution:

[0006] A test device for an electro-hydraulic speed regulator comprises a speed regulator test bench for driving an output shaft of a test piece to be tested to rotate, a torque loading motor is arranged on the speed regulator test bench, a motor shaft of the torque loading motor is opposite to the test piece to be tested, the motor shaft of the torque loading motor is relatively connected to the test piece to be tested through a torque connection component, the torque loading motor loads the test piece, a control component is arranged on one side of the speed regulator test bench, and the control component is connected to the torque loading motor and the signal of the test piece to be tested.

[0007] Optionally, the torque connection assembly includes a torque sensor, one end of which is fixedly connected to the output shaft of the test piece, and the other end of which is connected to the motor shaft of the torque loading motor.

[0008] Optionally, a connecting shaft is fixedly connected to one side of the torque sensor close to the test piece, the other end of the connecting shaft is fixedly connected to the output shaft of the test piece, and the connecting shaft, the torque sensor and the output shaft of the test piece are coaxially arranged.

[0009] Optionally, a transition shaft is fixedly connected to a side of the torque sensor close to the torque loading motor, a coupling is fixedly connected to a side of the transition shaft close to the torque loading motor, the coupling is fixedly connected to the motor shaft of the torque loading motor, and the torque sensor, the transition shaft, the coupling and the motor shaft of the torque loading motor are coaxially arranged.

[0010] Optionally, the speed regulator test bench includes a supporting base, a mounting platform is arranged on the supporting base, a first slide groove is horizontally opened on the supporting base, the mounting platform is fixedly connected with a first slider relative to the first slide groove, and the first slider slides inside the first slide groove.

[0011] Optionally, a mounting plate is fixedly connected to the mounting table, a mounting block is slidably connected to the mounting plate, the mounting block is fixedly connected to the test piece, and the sliding direction of the mounting block on the mounting plate is set along the direction of the motor shaft of the torque loading motor.

[0012] Optionally, a second slide groove is horizontally opened on the mounting plate, and the mounting tube is fixedly connected with a second slider relative to the second slide groove. The second slider slides inside the second slide groove, and the direction of the second slide groove is set along the motor shaft direction of the torque loading motor.

[0013] The present application also discloses a speed test method, which is applied to any of the above-mentioned electro-hydraulic speed regulator test devices, and the method comprises: controlling the speed of the test piece comprises:

[0014] S10: setting a speed given value in the control component, and the control component controls the speed of the test piece according to the speed given value;

[0015] S11: changing the output of the speed regulator test bench to the test object according to the actual output angle of the test object;

[0016] S12: the control component controls the rotation angle output of the test piece according to the difference between the rotation speed setting value and the actual rotation speed;

[0017] S13: Repeat the above S10-S12 until the actual speed is equal to the speed setting value.

[0018] The present application also discloses a torque testing method, which is applied to any of the above-mentioned electro-hydraulic speed regulator testing devices, and the method comprises: controlling the torque of the test piece comprises:

[0019] S20: setting a torque given value in the control component, and the control component controlling the torque loading motor to output a constant torque according to the torque given value;

[0020] S21: the control component collects the actual output torque value collected by the torque sensor;

[0021] S22: Controlling the torque loading motor according to the difference between the torque setting value and the torque actual value;

[0022] S23: Repeat the above S20-S22 until the actual torque is equal to the torque setting value.

[0023] The present application also discloses a configuration test method, which is applied to any of the above-mentioned electro-hydraulic speed regulator test devices, and the method comprises: configuring n steps, where n is a positive integer greater than or equal to 1; the steps comprise:

[0024] S30: given speed setting value;

[0025] S31: Given the rotation angle output value R1 and the torque setting value T1;

[0026] S32: Setting time setting value t1;

[0027] S33: loop the above steps S30-S32 until the number of loops is greater than the set number of loops n.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The test device can not only test mature electro-hydraulic speed governor products, but also be used for durability and reliability tests of newly developed electro-hydraulic speed governors, which can shorten the time for assembling them on diesel engines to carry out reliability tests, thus saving costs;

[0030] 2. The corresponding test parameters can be configured according to the actual application conditions, so that the durability and reliability tests carried out are closer to the actual application conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of an electro-hydraulic speed regulator testing device in an embodiment of the present application.

[0032] Figure 2 It is a structural schematic diagram of a speed regulator test bench of an electro-hydraulic speed regulator test device in an embodiment of the present application.

[0033] Figure 3 It is a flow chart of a torsion speed and torque testing method in an embodiment of the present application.

[0034] Figure 4 It is a step flow chart of a configuration test method in an embodiment of the present application.

[0035] Explanation of the reference numerals: 1. speed regulator test bench; 11. support base; 12. mounting table; 121. first slide groove; 2. test piece; 21. mounting plate; 211. second slide groove; 22. mounting block; 3. torque loading motor; 4. torque connection assembly; 41. torque sensor; 42. connecting shaft; 43. transition shaft; 44. coupling; 5. control assembly; 51. control console; 52. display. DETAILED DESCRIPTION

[0036] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0038] In the mechanical fuel injection system, it is used to adjust the amount of fuel injection, thereby controlling the speed and output power of the diesel engine. Although with the development of technology, electronic control systems are increasingly used in automobiles and mechanical equipment, electro-hydraulic speed governors are still widely used in some high-power medium-speed diesel engines to adjust the amount of fuel injection. The electro-hydraulic speed governor has the advantages of large output torque, fast response speed, and high adjustment accuracy, which makes it widely used in high-power medium-speed diesel engines. Through the electro-hydraulic speed governor, the speed of the diesel engine can be accurately controlled to meet the power requirements under complex working conditions. In these application scenarios, the mechanical fuel injection system combined with the electro-hydraulic speed governor can better adapt to the working requirements under harsh conditions such as high load, high power output and long-term operation.

[0039] With respect to the above-mentioned related technologies, the inventors believe that the existing speed regulator test bench can only perform factory tests on the functionality of the electro-hydraulic speed regulator, but cannot carry out durability and reliability tests on the newly designed and developed electro-hydraulic speed regulator that meet actual application conditions.

[0040] In order to shorten the time for assembling it on a diesel engine and conducting reliability tests to save costs; the corresponding test parameters can be configured according to the actual application conditions so that the durability and reliability tests carried out are closer to the actual application conditions. The present application provides an electro-hydraulic speed governor testing device and testing method.

[0041] The following is combined with Figure 1-4 This application is described in further detail.

[0042] The present application discloses a test device and a test method for an electro-hydraulic speed regulator. Figure 1 , Figure 2 An electro-hydraulic speed regulator testing device includes a speed regulator testing bench 1, on which a test piece 2 is arranged, an internal control system of the speed regulator testing bench 1 is connected to the test piece 2 by signals, and the speed regulator testing bench can drive the output shaft of the test piece 2 to rotate.

[0043] The speed regulator test bench 1 includes a horizontally arranged support base 11, a mounting platform 12 is arranged on the support base 11, and a first slide groove 121 is horizontally opened on the support base 11, and a plurality of first slide grooves 121 are arranged along the width direction. A first slider is fixedly connected to the mounting platform 12 at a position relative to the first slide groove 121, the first slider is located inside the first slide groove 121, and the first slider is relatively slidably connected to the first slide groove 121. The mounting platform 12 is relatively slidably connected to the support base 11 through the cooperation of the first slide groove 121 and the first slider.

[0044] The test piece 2 and the torque loading motor 3 are arranged relatively to each other on the mounting table 12, and the output shaft of the test piece 2 is coaxially arranged with the motor shaft of the torque loading motor 3. A mounting plate 21 is fixedly connected to the mounting table 12 at a position relative to the test piece 2, and a second slide groove 211 is horizontally opened on the upper surface of the mounting plate 21, and the opening direction of the second slide groove 211 is the same as the opening direction of the first slide groove 121. A mounting block 22 is fixedly connected to the bottom end of the test piece 2, and a second slider is fixedly connected to the bottom wall of the mounting block 22 at a position relative to the second slide groove 211, and the second slider is located inside the second slide groove 211 and is relatively slidably connected. The test piece 2 can be horizontally moved and adjusted on the mounting table 12 through the cooperation of the second slider and the second slide groove 211.

[0045] A torque connection assembly 4 is provided between the test piece 2 and the torque loading motor 3. The torque connection assembly 4 includes a torque sensor 41. A connecting shaft 42 is fixedly connected to the side of the torque sensor 41 close to the test piece 2. The end of the connecting shaft 42 close to the test piece 2 is coaxial with the test piece 2 and fixedly connected. The torque sensor 41 and the connecting shaft 42 are coaxially arranged, so that the output shaft of the test piece 2, the torque sensor 41 and the connecting shaft 42 are relatively coaxially arranged.

[0046] A transition shaft 43 is coaxially arranged on one side of the torque sensor 41 close to the torque loading motor 3, and the transition shaft 43 is fixedly connected to the torque sensor 41. A coupling 44 is coaxially arranged on one side of the transition shaft 43 close to the torque loading motor 3, and one end of the coupling 44 is fixedly connected to the transition shaft 43, and the other end of the coupling 44 is fixedly connected to the torque loading motor 3, so that the torque sensor 41, the transition shaft 43, the coupling 44 and the motor shaft of the torque loading motor 3 are coaxially arranged.

[0047] Furthermore, the output shaft of the test piece 2 , the torque sensor 41 , the connecting shaft 42 , the transition shaft 43 , the coupling 44 and the motor shaft of the torque loading motor 3 are coaxially arranged.

[0048] A control component 5 is also provided on one side of the speed regulator test bench 1. The control component 5 includes a console 51. A display 52 is provided on the console 51. The console 51 and the display 52 are connected by signal. The console 51 and the speed regulator test bench 1 exchange data through a cable bundle, and control the movement of the test piece 2, collect the pressure sensor signal on the test piece 2, the signal of the torque sensor 41, and control the torque loading motor 3.

[0049] Reference Figure 1 , Figure 3 The present application also provides a speed test method, which is applied to the above-mentioned electro-hydraulic speed regulator test device, and the method includes:

[0050] The speed control of the test piece 2 includes:

[0051] S10: setting a speed given value in the control component 5, and the control component 5 controls the speed of the test piece 2 according to the speed given value;

[0052] S11: changing the output of the speed regulator test bench 1 to the test piece 2 according to the actual output rotation angle of the test piece 2;

[0053] S12: the control component 5 controls the rotation angle output of the test piece 2 according to the difference between the rotation speed setting value and the actual rotation speed;

[0054] S13: Repeat the above S10-S12 until the actual speed is equal to the speed setting value.

[0055] A given speed value is set on the display 52 of the control console 51, and the speed regulator test bench 1 runs at this speed. The control console 51 controls the rotation angle output of the test piece 2. The speed regulator test bench 1 changes the rotation speed of the motor thereon according to the actual output rotation angle of the test piece 2, that is, the rotation speed of the test piece 2 also changes accordingly. The control console 51 controls the rotation angle output of the test piece 2 again according to the difference between the speed setting value and the actual speed until the speed reaches the set value.

[0056] The present application also provides a torque testing method, which is applied to the above-mentioned electro-hydraulic speed regulator testing device, and the method includes:

[0057] The torque control of the test piece 2 includes:

[0058] S20: setting a torque given value in the control component 5, and the control component 5 controls the torque loading motor 3 to output a constant torque according to the torque given value;

[0059] S21: the control component 5 collects the actual output torque value collected by the torque sensor 41;

[0060] S22: Controlling the torque loading motor 3 according to the difference between the torque setting value and the torque actual value;

[0061] S23: Repeat the above S20-S22 until the actual torque is equal to the torque setting value.

[0062] The torque setting value is set on the display 52 of the console 51. The console 51 controls the torque loading motor 3 to output a constant torque according to the torque setting value. The console 51 collects the actual output torque value through the torque sensor 41, and controls the torque loading motor 3 according to the difference between the torque setting value and the torque actual value until the torque reaches the setting value. The output torque acts on the output shaft of the test piece - the electro-hydraulic speed regulator.

[0063] Reference Figure 1 , Figure 4 The present application also provides a configuration test method, which is applied to the above-mentioned electro-hydraulic speed regulator test device, and the method comprises: configuring n steps, where n is a positive integer greater than or equal to 1; the steps comprise:

[0064] S30: given speed setting value;

[0065] S31: Given the rotation angle output value R1 and the torque setting value T1;

[0066] S32: Setting time setting value t1;

[0067] S33: loop the above steps S30-S32 until the number of loops is greater than the set number of loops n.

[0068] Multiple steps can be configured according to actual working conditions, and each step can set the speed setting value, the angle output setting, the torque setting value, the operating time setting, and the number of cycles. During operation, the console 51 monitors and records the pressure value, steady-state speed regulation, transient speed regulation, and stabilization time of the test piece 2 in real time.

[0069] In the present invention, the term "plurality" means at least two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0070] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. An electro-hydraulic speed governor testing device, characterized in that: The invention comprises a speed regulator test bench (1) for driving the output shaft of a test piece (2) to rotate, wherein a torque loading motor (3) is arranged on the speed regulator test bench (1), the motor shaft of the torque loading motor (3) is opposite to the test piece (2), the motor shaft of the torque loading motor (3) is relatively connected to the test piece (2) via a torque connection component (4), the torque loading motor (3) loads the test piece (2), and a control component (5) is arranged on one side of the speed regulator test bench (1), and the control component (5) is connected to the torque loading motor (3) and the test piece (2) by signal.

2. The electro-hydraulic speed governor testing device according to claim 1, characterized in that: The torque connection assembly (4) comprises a torque sensor (41), one end of the torque sensor (41) is fixedly connected to the output shaft of the test piece (2), and the other end of the torque sensor (41) is connected to the motor shaft of the torque loading motor (3).

3. The electro-hydraulic speed governor testing device according to claim 2, characterized in that: A coupling shaft (42) is fixedly connected to one side of the torque sensor (41) close to the test piece (2); the other end of the coupling shaft (42) is fixedly connected to the output shaft of the test piece (2); the coupling shaft (42), the torque sensor (41) and the output shaft of the test piece (2) are coaxially arranged.

4. The electro-hydraulic speed governor testing device according to claim 2, characterized in that: A transition shaft (43) is fixedly connected to one side of the torque sensor (41) close to the torque loading motor (3); a coupling (44) is fixedly connected to one side of the transition shaft (43) close to the torque loading motor (3); the coupling (44) is fixedly connected to the motor shaft of the torque loading motor (3); the torque sensor (41), the transition shaft (43), the coupling (44) and the motor shaft of the torque loading motor (3) are coaxially arranged.

5. The electro-hydraulic speed governor testing device according to claim 1, characterized in that: The speed regulator test bench (1) comprises a support base (11), a mounting platform (12) is arranged on the support base (11), a first slide groove (121) is horizontally opened on the support base (11), a first sliding block is fixedly connected to the mounting platform (12) relative to the first slide groove (121), and the first sliding block is located inside the first slide groove (121) and slides.

6. The electro-hydraulic speed governor testing device according to claim 5, characterized in that: A mounting plate (21) is fixedly connected to the mounting platform (12), a mounting block (22) is slidably connected to the mounting plate (21), the mounting block (22) is fixedly connected to the test piece (2), and the sliding direction of the mounting block (22) on the mounting plate (21) is arranged along the direction of the motor shaft of the torque loading motor (3).

7. The electro-hydraulic speed governor testing device according to claim 6, characterized in that: A second slide groove (211) is horizontally provided on the mounting plate (21), and a second slider is fixedly connected to the mounting tube relative to the second slide groove (211). The second slider slides inside the second slide groove (211), and the direction of the second slide groove (211) is arranged along the motor shaft direction of the torque loading motor (3).

8. A rotation speed testing method, characterized in that: The electro-hydraulic speed regulator testing device according to any one of claims 1 to 7, the method comprising: controlling the speed of the test piece (2) comprises: S10: setting a given speed value in the control component (5), and the control component (5) controls the speed of the test piece (2) according to the given speed value; S11: changing the output of the speed regulator test bench (1) to the test object (2) according to the actual output rotation angle of the test object (2); S12: the control component (5) controls the rotation angle output of the test piece (2) according to the difference between the rotation speed setting value and the actual rotation speed; S13: Repeat the above S10-S12 until the actual speed is equal to the speed setting value.

9. A torque testing method, characterized in that: The electro-hydraulic speed regulator testing device according to any one of claims 1 to 7, the method comprising: controlling the torque of the test piece (2) comprises: S20: setting a torque given value in the control component (5), and the control component (5) controls the torque loading motor (3) to output a constant torque according to the torque given value; S21: the control component (5) collects the actual output torque value collected by the torque sensor (41); S22: controlling the torque loading motor (3) according to the difference between the torque setting value and the torque actual value; S23: Repeat the above S20-S22 until the actual torque is equal to the torque setting value.

10. A configuration test method, characterized in that: Applicable to the electro-hydraulic speed regulator testing device according to any one of claims 1 to 7, the method comprising: configuring n steps, where n is a positive integer greater than or equal to 1; the steps include: S30: given speed setting value; S31: Given the rotation angle output value R1 and the torque setting value T1; S32: Setting time setting value t1; S33: loop the above steps S30-S32 until the number of loops is greater than the set number of loops n.

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