Test bench for engine brake rocker arm function test

Abstract

The utility model relates to the technical field of function test, and discloses a test bench for function test of an engine brake rocker arm, which comprises a connecting base body, the top end of the connecting base body is fixedly connected with a shell, and the top end of the connecting base body is provided with a special fixture for the engine brake rocker arm. A rocker arm to be detected is clamped to the outer side of the special clamp for the engine brake rocker arm, the top end of the connecting base body is fixedly connected with an adjusting frame located on the inner side of the shell, the top end of the adjusting frame is fixedly connected with an upper pressing plate stabilizing assembly, and the lower side of the connecting base body is fixedly connected with a lower push rod assembly. The outer side of the upper pressing plate stabilizing assembly is fixedly connected with a displacement monitoring assembly. The test bed for testing the engine brake rocker arm function has the advantages that the engine brake rocker arm function can be tested, and the test process is simple and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field of function testing, in particular to a test bench for function testing of an engine brake rocker arm. Background Art

[0002] The engine brake rocker arm is a technical device designed to effectively control vehicle speed through the resistance generated when the engine is running. This technology is mainly used in automobile engines. Through a specific rocker arm design, the internal mechanical movement of the engine is used to produce a braking effect, thereby achieving the purpose of slowing down or controlling vehicle speed.

[0003] Existing medium and heavy-duty engines are equipped with rocker arms with engine braking functions, which have the function of assisting the braking of the vehicle. It is a structure related to the driving safety of the vehicle. There are higher requirements for the functional testing of the rocker arms. Factory testing is very necessary to ensure the pass rate of the engine brake rocker arms and prevent defective engine brake rocker arms from entering the market. Therefore, a test bench for the functional testing of engine brake rocker arms is proposed to solve the above problems. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a test bench for testing the function of an engine brake rocker arm, which has the advantages of being able to test the function of the engine brake rocker arm and having a simple and quick testing process. It solves the problem that existing medium and heavy-duty engines are all equipped with rocker arms with engine braking functions, and has the function of assisting braking of the vehicle. It is a structure that involves the safety of vehicle driving, and has higher requirements for the functional testing of the rocker arm. Factory testing is very necessary to ensure the pass rate of the engine brake rocker arm and prevent defective engine brake rocker arms from entering the market.

[0006] (2) Technical solution

[0007] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: A test bench for functional testing of an engine brake rocker arm comprises a connecting base, the top end of the connecting base is fixedly connected to an outer shell, the top end of the connecting base is provided with a special clamp for the engine brake rocker arm, the outer side of the special clamp for the engine brake rocker arm is clamped with the rocker arm to be tested, the top end of the connecting base is fixedly connected to an adjustment frame located on the inner side of the outer shell, the top end of the adjustment frame is fixedly connected to an upper pressure plate stabilizing assembly, the lower side of the connecting base is fixedly connected to a lower push rod assembly, and the outer side of the upper pressure plate stabilizing assembly is fixedly connected to a displacement monitoring assembly.

[0008] The beneficial effects of the utility model are:

[0009] The test bench for testing the function of the engine brake rocker arm has the advantages of being able to test the function of the engine brake rocker arm and having a simple and quick testing process.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, a numerical control module is fixedly connected to the outer side of the connection base, a display screen is fixedly connected to the outer side of the shell, and a three-color prompt light is fixedly connected to the outer side of the shell.

[0012] The beneficial effect of adopting the above further solution is that the numerical control module can control the overall operation of the device.

[0013] Furthermore, the upper pressure plate stabilizing assembly includes an upper pressure cylinder fixedly connected to the top of the adjusting frame, the bottom end of the telescopic end of the upper pressure cylinder is fixedly connected to the movable plate, and the bottom end of the movable plate is fixedly connected to the upper pressure plate body.

[0014] The beneficial effect of adopting the above further solution is that the upper pressure plate stabilizing assembly can limit the top end of the special clamp for the engine brake rocker arm.

[0015] Furthermore, the lower push rod assembly includes a servo electric cylinder fixing plate fixedly connected to the outside of the connecting base, a servo electric cylinder is fixedly connected to the outside of the servo electric cylinder fixing plate, a pressure sensor is fixedly connected to the top side of the servo electric cylinder, and the upper end of the pressure sensor is connected to the lower push rod body, and the lower push rod body can be moved to the top of the connecting base.

[0016] The beneficial effect of adopting the above further solution is that the lower push rod assembly can apply force to the bottom end of the piston of the rocker arm to be tested on the special fixture for the engine brake rocker arm, simulating the operating condition of the brake rocker arm.

[0017] Furthermore, the displacement monitoring assembly includes a movable cylinder fixedly connected to the outer side of the upper pressure plate stabilization assembly, a movable rod fixedly connected to the outer side of the movable cylinder, and a displacement sensor fixedly connected to the outer side of the movable rod.

[0018] The beneficial effect of adopting the above further solution is that the displacement monitoring component can monitor the displacement of the rocker arm to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a side view of the structure of the utility model;

[0021] Figure 3 This is the connection diagram of the mobile rod and displacement sensor of the utility model.

[0022] In the figure: 1. Connecting base; 2. Outer shell; 3. Special fixture for engine brake rocker arm; 4. Rocker arm to be tested; 5. Adjusting frame; 6. Upper pressure plate stabilizing assembly; 61. Upper pressure cylinder; 62. Moving plate; 63. Upper pressure plate body; 7. Lower push rod assembly; 71. Servo electric cylinder fixing plate; 72. Servo electric cylinder; 73. Pressure sensor; 74. Lower push rod body; 8. Three-color warning light; 9. Displacement monitoring assembly; 91. Moving cylinder; 92. Moving rod; 93. Displacement sensor; 10. CNC module; 11. Display screen. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the embodiment, Figure 1-3 A test bench for functional testing of an engine brake rocker arm is provided. The utility model includes a connecting base 1, the top of the connecting base 1 is fixedly connected to an outer shell 2, the top of the connecting base 1 is provided with a special clamp 3 for an engine brake rocker arm, the outer side of the special clamp 3 for the engine brake rocker arm is clamped with a rocker arm 4 to be tested, the top of the connecting base 1 is fixedly connected to an adjusting frame 5 located on the inner side of the outer shell 2, the top of the adjusting frame 5 is fixedly connected to an upper pressure plate stabilizing assembly 6, the lower side of the connecting base 1 is fixedly connected to a lower push rod assembly 7, and the outer side of the upper pressure plate stabilizing assembly 6 is fixedly connected to a displacement monitoring assembly 9.

[0025] The outer side of the connection base 1 is fixedly connected to a numerical control module 10 , the outer side of the shell 2 is fixedly connected to a display screen 11 , and the outer side of the shell 2 is fixedly connected to a three-color prompt light 8 .

[0026] Among them, it also includes a hydraulic system and an oil cooling system. The CNC module 10 is electrically connected to the hydraulic system and the oil cooling system. The CNC module 10 is responsible for connecting, transmitting and controlling the entire equipment, specifically involving oil pressure control, oil temperature control, lower push rod assembly 7, upper pressure plate stabilization assembly 6, displacement monitoring assembly 9 and displacement and final data processing and display. At the same time, the hydraulic system is connected to the special fixture 3 for the engine brake rocker arm, and oil supply operation can be performed to the inside of the special fixture 3 for the engine brake rocker arm.

[0027] The display screen 11 can display data changes.

[0028] Among them, the upper pressure plate stabilizing assembly 6 includes an upper pressure cylinder 61 fixedly connected to the top of the adjustment frame 5, the bottom end of the telescopic end of the upper pressure cylinder 61 is fixedly connected to a movable plate 62, and the bottom end of the movable plate 62 is fixedly connected to the upper pressure plate body 63.

[0029] Activating the upper pressure cylinder 61 can move the movable plate 62 downward, and then the upper pressure plate body 63 can restrict the top end of the engine brake rocker arm special clamp 3.

[0030] Among them, the lower push rod assembly 7 includes a servo electric cylinder fixing plate 71 fixedly connected to the outside of the connecting base 1, a servo electric cylinder 72 is fixedly connected to the outside of the servo electric cylinder fixing plate 71, a pressure sensor 73 is fixedly connected to the top side of the servo electric cylinder 72, and the upper end of the pressure sensor 73 is connected to the lower push rod body 74, and the lower push rod body 74 can be moved to the top of the connecting base 1.

[0031] The pressure sensor 73 can detect the pressure used by the servo electric cylinder 72 to push the push rod body 74.

[0032] The lower push rod assembly 7 can apply force to the bottom end of the piston of the rocker arm to be tested 4 on the engine brake rocker arm special fixture 3 to simulate the working condition of the brake rocker arm.

[0033] The displacement monitoring assembly 9 includes a movable cylinder 91 fixedly connected to the outer side of the upper pressure plate stabilizing assembly 6 , a movable rod 92 fixedly connected to the outer side of the movable cylinder 91 , and a displacement sensor 93 fixedly connected to the outer side of the movable rod 92 .

[0034] The displacement monitoring component 9 can monitor the displacement of the rocker arm 4 to be detected, and there are two displacement monitoring components 9, which can improve the piston displacement of the rocker arm 4 to be detected.

[0035] Working principle:

[0036] During the test, the rocker arm 4 to be tested is placed on the special fixture 3 for the engine brake rocker arm. The upper pressure cylinder 61 is activated to move the movable plate 62 downward, and then the upper pressure plate body 63 can limit the top of the special fixture 3 for the engine brake rocker arm, and stabilize the pressure to keep the special fixture 3 for the engine brake rocker arm from moving under the force. The displacement monitoring component 9 moves to the lower end of the piston of the rocker arm 4 to be tested, and the lower push rod body 74 moves upward to the lower end of the piston of the rocker arm 4 to be tested; the equipment is tested under the program set in the numerical control module 10, and the numerical control module 10 controls The hydraulic system operates to supply hydraulic oil of a set pressure to the interior of the connecting base 1, which is transmitted to the rocker arm 4 to be tested through the engine brake rocker arm special fixture 3, braking the piston movement of the rocker arm 4 to be tested, generating displacement, and transmitted to the CNC module 10 through the displacement monitoring component 9. The CNC module 10 controls the lower push rod body 74 to apply pressure upward, and transmits it to the CNC module 10 through the pressure sensor 73. At this time, the piston of the rocker arm 4 to be tested moves upward under the pressure applied upward by the lower push rod body 74, and is transmitted to the CNC module 10 again through the displacement monitoring component 9.

[0037] The numerical control module 10 calculates the data and displays the result on the display 11. The display result is used to determine whether the rocker arm 4 to be tested is qualified.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test bench for testing the function of an engine brake rocker arm, comprising a connecting base (1), characterized in that: The top of the connecting base (1) is fixedly connected to the housing (2); the top of the connecting base (1) is provided with a special clamp (3) for an engine brake rocker arm; the outer side of the special clamp (3) for the engine brake rocker arm is clamped with a rocker arm (4) to be detected; the top of the connecting base (1) is fixedly connected to an adjustment frame (5) located on the inner side of the housing (2); the top of the adjustment frame (5) is fixedly connected to an upper pressure plate stabilizing assembly (6); the lower side of the connecting base (1) is fixedly connected to a lower push rod assembly (7); and the outer side of the upper pressure plate stabilizing assembly (6) is fixedly connected to a displacement monitoring assembly (9).

2. The test bench for engine brake rocker arm function test according to claim 1, characterized in that: A numerical control module (10) is fixedly connected to the lower side of the connection base (1), a display screen (11) is fixedly connected to the outer side of the housing (2), and a three-color prompt light (8) is fixedly connected to the outer side of the housing (2).

3. The test bench for engine brake rocker arm function test according to claim 1, characterized in that: The upper pressure plate stabilizing assembly (6) comprises an upper pressure cylinder (61) fixedly connected to the top of the regulating frame (5); the bottom end of the telescopic end of the upper pressure cylinder (61) is fixedly connected to a movable plate (62); and the bottom end of the movable plate (62) is fixedly connected to an upper pressure plate body (63).

4. The test bench for engine brake rocker arm function test according to claim 1, characterized in that: The lower push rod assembly (7) includes a servo electric cylinder fixing plate (71) fixedly connected to the outside of the connecting base (1), a servo electric cylinder (72) fixedly connected to the outside of the servo electric cylinder fixing plate (71), a pressure sensor (73) fixedly connected to the top side of the servo electric cylinder (72), and a lower push rod body (74) connected to the upper end of the pressure sensor. The lower push rod body (74) can be moved to the top of the connecting base (1).

5. The test bench for engine brake rocker arm function test according to claim 1, characterized in that: The displacement monitoring assembly (9) comprises a movable cylinder (91) fixedly connected to the outside of the upper pressure plate stabilizing assembly (6), a movable rod (92) fixedly connected to the outside of the movable cylinder (91), and a displacement sensor (93) fixedly connected to the outside of the movable rod (92).

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