Stability detection device for anti-friction tappet

Abstract

The utility model relates to the field of tappet performance detection, and discloses a stability detection device for an anti-friction tappet, which comprises an abrasion machine body, one side of the top of the abrasion machine body is fixedly connected with a control module, and the other side of the top of the abrasion machine body is fixedly connected with a test board. A mounting frame is fixedly connected to the outer wall of the side, away from the control module, of the abrasion machine body, a fixing rod is fixedly connected to the top of the mounting frame, and a limiting frame is rotationally connected to the middle of the mounting frame. The sliding block slides in the wave groove of the wave groove column, so that the V-shaped plates on the two sides slide in a reciprocating mode, the supporting plate can do periodic reciprocating micro movement in cooperation with the elastic force of the reset spring, then the load applied to the tappet above the test table by the abrasion block is synchronously and periodically changed, and the test accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of tappet performance testing, specifically a stability testing device for anti-friction tappets. Background Technology

[0002] The main function of tappets is to transmit the thrust of the camshaft to the pushrod (or valve stem) and to withstand the lateral force applied when the camshaft rotates. The anti-friction performance test is a key step in evaluating the durability and performance of tappets in a frictional environment.

[0003] In the existing technology, the wear test of the tappet often cannot fully simulate the actual working conditions inside the engine. For example, the load in the test is usually constant, while the load between the cam and tappet inside the engine is variable, which may be random or periodic. This difference may cause the experimental results to deviate from the actual situation, resulting in an incorrect assessment of the wear performance of the tappet.

[0004] Therefore, a stability testing device for anti-friction tappets is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a stability testing device for anti-friction tappets, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stability testing device for anti-friction tappets, comprising a wear-resistant machine body, a control module fixedly connected to one side of the top of the wear-resistant machine body, a test platform fixedly connected to the other side of the top of the wear-resistant machine body, a mounting frame fixedly connected to the outer wall of the side of the wear-resistant machine body away from the control module, a fixing rod fixedly connected to the top of the mounting frame, and a limit frame rotatably connected to the middle of the mounting frame, and further comprising:

[0007] A periodic variable mechanism is used to regularly change the load on the tappet;

[0008] The random variation mechanism is used to arbitrarily change the load on the tappet to achieve randomness.

[0009] Preferably, the periodic variation mechanism includes a dual-head motor fixedly connected to the edge of the mounting frame, a corrugated groove column fixedly connected to one output end of the dual-head motor, a slide rod slidably connected to the top of the mounting frame, a slider fixedly connected to the outer wall of the slide rod, and the outer wall of the slider slidably connected to the corrugated groove column.

[0010] Preferably, the periodic change mechanism further includes a pair of V-shaped plates fixedly connected to the middle of the return spring. The outer walls of the pair of V-shaped plates are slidably connected to the outer wall of the fixed rod. Support plates are provided on both sides of the fixed rod. A grinding block is fixedly connected to the top of the pair of support plates. The side of the support plates that are far apart from each other abuts against the V-shaped plates. The side of the support plates that are close to each other is fixedly connected to the return spring. The side of the pair of return springs that are close to each other is fixedly connected to the middle of the mounting frame.

[0011] Preferably, the random variation mechanism includes a turntable fixedly connected to the output end of the dual-head motor on the other side. The side of the turntable away from the dual-head motor is rotatably connected to the mounting bracket. A push rod is fixedly connected to the side of the slide rod near the turntable. Several threaded grooves are equally spaced on the side of the turntable near the push rod. A dome protrusion is threaded into the threaded groove of the turntable.

[0012] Preferably, the position and number of the dome protrusions within the threaded groove are random.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting up a periodic change mechanism, the slider slides in the wave groove of the wave groove column, so that the V-shaped plates on both sides make reciprocating sliding motion. With the elastic force of the return spring, the support plate can make periodic reciprocating slight movement, thereby making the load applied by the grinding block to the column above the test platform change synchronously and periodically, improving the test accuracy.

[0015] 2. By setting up a random variation mechanism, the dome protrusions on the turntable randomly and intermittently squeeze the push rod, causing the slide bar to move randomly in sync. Similarly, the load applied by the grinding block to the tappet can be randomly changed. Furthermore, the tester can randomly change the position distribution of the dome protrusions in the turntable's threaded groove and the length of the dome protrusions left on the outside, thereby increasing randomness and deeply simulating the actual working conditions inside the engine, thus allowing for an objective evaluation of the tappet's wear performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the V-shaped plate connection of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the fixing rod connection of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the corrugated groove column connection of this utility model;

[0020] Figure 5This is a schematic diagram of the structure of the dome protrusion connection of this utility model;

[0021] Figure 6 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0022] In the picture:

[0023] 1. Wearing machine body; 2. Control module; 3. Test bench; 4. Mounting bracket; 5. Limiting bracket; 6. Support plate; 7. Grinding block; 8. Return spring; 9. Slide rod; 10. V-shaped plate; 11. Dual-head motor; 12. Turntable; 14. Fixing rod; 15. Dome protrusion; 16. Push rod; 17. Wave groove column; 18. Slider. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 6 An embodiment of this utility model is provided: a stability testing device for anti-friction tappets, comprising a wear-resistant body 1, a control module 2 fixedly connected to one side of the top of the wear-resistant body 1, a test platform 3 fixedly connected to the other side of the top of the wear-resistant body 1, a mounting frame 4 fixedly connected to the outer wall of the side of the wear-resistant body 1 away from the control module 2, a fixing rod 14 fixedly connected to the top of the mounting frame 4, and a limit frame 5 rotatably connected to the middle of the mounting frame 4, and further comprising:

[0026] A periodic variable mechanism is used to regularly change the load on the tappet;

[0027] The random variation mechanism is used to arbitrarily change the load on the tappet to achieve randomness;

[0028] The periodic change mechanism includes a double-headed motor 11 fixedly connected to the edge of the mounting frame 4. A wave groove column 17 is fixedly connected to one output end of the double-headed motor 11. A slide rod 9 is also slidably connected to the top of the mounting frame 4. A slider 18 is fixedly connected to the outer wall of the slide rod 9. The outer wall of the slider 18 is slidably connected to the wave groove column 17.

[0029] The periodic change mechanism also includes a pair of V-shaped plates 10 fixedly connected to the middle of the return spring 8. The outer walls of the pair of V-shaped plates 10 are slidably connected to the outer wall of the fixed rod 14. Support plates 6 are provided on both sides of the fixed rod 14. A grinding block 7 is fixedly connected to the top of the pair of support plates 6. The side of the support plates 6 that is far apart from each other abuts against the V-shaped plates 10. The side of the support plates 6 that is close to each other is fixedly connected to the return spring 8. The side of the pair of return springs 8 that is close to each other is fixedly connected to the middle of the mounting frame 4.

[0030] Wherein: the slider 18 slides in the wave groove of the wave groove column 17, causing the V-shaped plates 10 on both sides to reciprocate and slide. With the elastic force of the reset spring 8, the support plate 6 can make periodic reciprocating slight movements, thereby causing the load applied by the grinding block 7 to the column above the test table 3 to change synchronously and periodically.

[0031] The random change mechanism includes a turntable 12 fixedly connected to the output end of the dual-head motor 11 on the other side. The side of the turntable 12 away from the dual-head motor 11 is rotatably connected to the mounting bracket 4. A push rod 16 is fixedly connected to the side of the slide rod 9 near the turntable 12. Several threaded grooves are equally spaced on the side of the turntable 12 near the push rod 16. A dome protrusion 15 is threaded into the threaded groove of the turntable 12.

[0032] The position and number of the dome-shaped protrusions 15 within the threaded groove are random;

[0033] Among them, the dome protrusion 15 on the turntable 12 randomly and intermittently squeezes the push rod 16, causing the slide rod 9 to move randomly in sync. Similarly, this can eventually cause the load applied by the grinding block 7 to the tappet to change randomly.

[0034] The working principle of the above implementation is as follows: Starting the dual-head motor 11 can drive the wave groove column 17 to rotate, thereby causing the slider 18 to slide in the wave groove of the wave groove column 17. Since the slide rod 9 slides on the mounting bracket 4, the slider 18 can drive the slide rod 9 to perform reciprocating sliding motion, thereby causing the V-shaped plates 10 on both sides to move back and forth synchronously. Through the V-shaped plates 10, the support plate 6 can be pushed back and forth inward continuously. With the elastic force of the return spring 8, the support plate 6 can perform periodic reciprocating slight movement, thereby causing the grinding block 7 to apply a load to the column above the test table 3. In addition, by switching the shaft of the dual-head motor 11, the turntable 12 can be rotated, which in turn causes the dome protrusion 15 on the turntable 12 to randomly and intermittently press the push rod 16, causing the slide rod 9 to move randomly in sync. Similarly, the load applied by the grinding block 7 to the tappet can be randomly changed. Furthermore, the tester can randomly change the position distribution of the dome protrusion 15 in the threaded groove of the turntable 12 and the length of the dome protrusion 15 left on the outside, thereby increasing randomness, deeply simulating the actual working conditions inside the engine, and improving the accuracy of the test.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stability testing device for anti-friction tappets, comprising a wear-resistant body (1), characterized in that, A control module (2) is fixedly connected to one side of the top of the wear machine body (1), and a test bench (3) is fixedly connected to the other side of the top of the wear machine body (1). A mounting bracket (4) is fixedly connected to the outer wall of the wear machine body (1) away from the control module (2). A fixing rod (14) is fixedly connected to the top of the mounting bracket (4). A limit bracket (5) is rotatably connected to the middle of the mounting bracket (4). The wear machine body (1) also includes: A periodic variable mechanism is used to regularly change the load on the tappet; The random variation mechanism is used to arbitrarily change the load on the tappet to achieve randomness.

2. The stability testing device for anti-friction tappets according to claim 1, characterized in that: The periodic change mechanism includes a double-headed motor (11) fixedly connected to the edge of the mounting frame (4). One output end of the double-headed motor (11) is fixedly connected to a wave groove column (17). A slide rod (9) is also slidably connected to the top of the mounting frame (4). A slider (18) is fixedly connected to the outer wall of the slide rod (9). The outer wall of the slider (18) is slidably connected to the wave groove column (17).

3. The stability testing device for anti-friction tappets according to claim 2, characterized in that: The periodic change mechanism also includes a pair of V-shaped plates (10) fixedly connected to the middle of the return spring (8). The outer walls of the pair of V-shaped plates (10) are slidably connected to the outer wall of the fixed rod (14). Support plates (6) are provided on both sides of the fixed rod (14). A grinding block (7) is fixedly connected to the top of the pair of support plates (6). The side of the support plates (6) that are far apart from each other abuts against the V-shaped plate (10). The side of the support plates (6) that are close to each other is fixedly connected to the return spring (8). The side of the pair of return springs (8) that are close to each other is fixedly connected to the middle of the mounting frame (4).

4. The stability testing device for anti-friction tappets according to claim 2, characterized in that: The random change mechanism includes a turntable (12) fixedly connected to the output end of the dual-head motor (11) on the other side. The turntable (12) is rotatably connected to the mounting bracket (4) on the side away from the dual-head motor (11). A push rod (16) is fixedly connected to the side of the slide rod (9) near the turntable (12). Several threaded grooves are equally spaced on the side of the turntable (12) near the push rod (16). A dome protrusion (15) is threaded into the threaded groove of the turntable (12).

5. The stability testing device for anti-friction tappets according to claim 4, characterized in that: The position and number of the dome protrusions (15) in the threaded groove are random.

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