Wear simulation device for heavy-duty diesel engine valve wear resistance strength detection

Abstract

The utility model relates to an abrasion simulation device for heavy-duty diesel engine valve abrasion resistance strength detection, which comprises an operation table and a box body arranged on the operation table, a valve is horizontally and slidably arranged in the box body, a support is slidably arranged on the operation table, and the operation table is provided with a horizontal reciprocating assembly connected with the support. An electric heater is installed in the box body, a gear switch is arranged on the electric heater, a self-adaptive adjusting structure is further arranged on the operation table, and the self-adaptive adjusting structure is respectively connected with the horizontal reciprocating assembly and the gear switch. The horizontal reciprocating assembly drives the support to horizontally slide in a reciprocating mode, and therefore abrasion resistance detection on the air valve is achieved. And the self-adaptive adjusting structure generates a corresponding centrifugal force according to the running speed of the horizontal reciprocating assembly, and performs adaptive adjustment on a gear switch on the electric heater by using the centrifugal force so as to simulate the heated environment in the use process of the air valve.

Description

Technical Field

[0001] The utility model relates to the technical field of valve detection, in particular to a wear simulation device for detecting the wear resistance strength of valves of heavy diesel engines. Background Art

[0002] As actuators in the valve trains of gasoline and diesel engines, valves are crucial components for ensuring the engine's power, fuel economy, reliability, and durability. In diesel engines, valves operate under harsh conditions, often at high temperatures and high pressures. They must withstand not only frequent high-speed impacts, alternating tension and compression, and thermal stresses, but also the erosion of high-speed combustion gases. This requires that intake and exhaust valves possess not only high-temperature strength but also crack and wear resistance. With the continued advancement of diesel engines, valve wear and failure are becoming increasingly prominent, drawing significant attention from diesel engine manufacturers.

[0003] If the valve is worn, the valve will sink, the valve clearance will disappear, the valve cannot be seated, the gas will leak out, the engine power will drop, and the use will be affected; at the same time, the leaked gas may cause the valve to overheat or even burn.

[0004] Currently, the more common way to evaluate valve wear characteristics is to use a standard sliding device. This test method only considers the wear resistance of the material and does not take into account the actual working conditions of the diesel engine valve. For example, since the diesel engine generates heat when it is running, this heat may play a certain role in the wear of the valve, so it cannot be ignored. During the valve wear test, it is necessary to place it in an appropriate thermal environment to simulate the scenario of normal valve operation. Therefore, the existing wear simulation device does not match the actual diesel engine operating conditions, and the simulation guidance is of low significance. Utility Model Content

[0005] The purpose of the utility model is to provide a wear simulation device for testing the wear resistance strength of valves of heavy-duty diesel engines, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A wear simulation device for testing the wear resistance strength of heavy-duty diesel engine valves, comprising an operating table and a box body arranged on the operating table, a valve being horizontally slidably arranged in the box body, a bracket being slidably arranged on the operating table, and a clamping assembly being arranged on the bracket for fixing one end of the valve;

[0008] The operating table is provided with a horizontal reciprocating assembly, which is connected to the bracket. When the horizontal reciprocating assembly is in operation, the valve will follow the bracket to move back and forth through the clamping assembly;

[0009] An electric heater is installed in the box, and a gear switch is provided on the electric heater;

[0010] The operating table is also provided with an adaptive adjustment structure, which is respectively connected to the horizontal reciprocating component and the gear switch. When the horizontal reciprocating component is running, the adaptive adjustment structure will generate corresponding centrifugal force according to the operating speed of the horizontal reciprocating component, thereby adaptively adjusting the gear switch.

[0011] As a further solution of the utility model:

[0012] The horizontal reciprocating assembly includes a fixed frame arranged on the operating table and a rotating rod horizontally rotatably arranged on the fixed frame;

[0013] A sleeve is provided on the bracket, and the sleeve is slidably sleeved on the outer wall of the rotating rod.

[0014] As a further solution of the utility model:

[0015] A DC motor is fixedly mounted horizontally on the operating table, and an output end of the DC motor is fixedly connected to one end of the rotating rod;

[0016] A limiting slide groove is provided on the operating table, and the bottom end of the bracket is located inside the limiting slide groove and slides with each other;

[0017] The outer wall of the rotating rod is provided with a track groove, and a ball is rollingly embedded in the interior of the sleeve, and the ball is also rollingly embedded in the track groove.

[0018] As a further solution of the utility model:

[0019] The adaptive adjustment structure includes a support base provided on the operating table and a transmission rod horizontally rotatably provided on the support base;

[0020] The transmission rod is provided with a disc, and an I-shaped sliding groove is opened on the disc along the diameter direction thereof. There are multiple I-shaped sliding grooves, and I-shaped sliding blocks are slidingly provided inside the multiple I-shaped sliding grooves.

[0021] As a further solution of the utility model:

[0022] The outer wall of the transmission rod is movably sleeved with a sleeve seat, the outer wall of the sleeve seat is rotatably provided with a rotating frame, and the rotating frame and the multiple I-shaped sliding blocks are rotatably connected through multiple connecting rods.

[0023] As a further solution of the utility model:

[0024] A limit plate is provided on the transmission rod, and a spring is movably sleeved on the outer wall of the transmission rod, with both ends of the spring respectively abutting against a side of the sleeve away from the disc and the limit plate;

[0025] An L-shaped rod is provided on the outer wall of the sleeve, and one end of the L-shaped rod is fixedly connected to the gear switch.

[0026] As a further solution of the utility model:

[0027] A first pulley is provided on the rotating rod, a second pulley is provided on the transmission rod, and the first pulley and the second pulley are connected by a belt.

[0028] As a further solution of the utility model:

[0029] The clamping assembly includes a fixing seat provided on the bracket and a threaded rod threadably engaged with the fixing seat;

[0030] One end of the valve passes through the bracket horizontally, and one end of the valve is provided with an annular groove;

[0031] One end of the threaded rod is provided with a knob, and the other end of the threaded rod extends into the annular groove and is locked with each other.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] One end of the valve installed in the box for horizontal sliding is fixed by the clamping assembly on the bracket, and the horizontal reciprocating assembly is used to drive the bracket to slide horizontally back and forth on the operating table, thereby realizing the wear resistance testing of the valve; and in the process of the operation of the horizontal reciprocating assembly, the adaptive adjustment structure will follow the action, and at the same time generate corresponding centrifugal force according to the operating speed of the horizontal reciprocating assembly, and use the centrifugal force to adjust the gear switch on the electric heater accordingly to simulate the heating environment during the use of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the overall structure.

[0035] Figure 2 It is a cross-sectional view of the box, bracket, fixing seat and sleeve structure.

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0037] Figure 4 It is a cross-sectional view of the box structure.

[0038] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0039] Figure 6 for Figure 2 Enlarged view of point C in the middle.

[0040] Figure 7 This is a schematic diagram of the overall structure from another perspective.

[0041] Figure 8 This is a disassembled diagram of the rotating rod and sleeve structure.

[0042] In the figure: 1. operating table; 101. limit slide; 2. box; 3. valve; 301. annular groove; 4. bracket; 5. electric heater; 6. gear switch; 7. fixing frame; 8. rotating rod; 801. track groove; 9. sleeve; 10. ball; 11. DC motor; 12. support seat; 13. transmission rod; 14. disc; 1401. I-shaped slide; 15. sleeve; 16. rotating frame; 17. I-shaped slider; 18. connecting rod; 19. limit plate; 20. spring; 21. L-shaped rod; 22. Pulley No. 1; 23. Pulley No. 2; 24. belt; 25. fixing seat; 26. threaded rod; 27. knob. DETAILED DESCRIPTION

[0043] 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.

[0044] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only embodiment.

[0045] See also Figures 1 to 8 In an embodiment of the present invention, a wear simulation device for testing the wear resistance strength of a heavy-duty diesel engine valve comprises an operating table 1 and a box body 2 disposed on the operating table 1, a valve 3 being horizontally slidably disposed in the box body 2, a bracket 4 being slidably disposed on the operating table 1, and a clamping assembly being disposed on the bracket 4 for fixing one end of the valve 3;

[0046] The operating platform 1 is provided with a horizontal reciprocating assembly, which is connected to the bracket 4. When the horizontal reciprocating assembly is in operation, the valve 3 will reciprocate following the bracket 4 through the clamping assembly;

[0047] An electric heater 5 is installed in the box 2, and a gear switch 6 is provided on the electric heater 5;

[0048] The operating platform 1 is also provided with an adaptive adjustment structure, which is respectively connected to the horizontal reciprocating component and the gear switch 6. When the horizontal reciprocating component is running, the adaptive adjustment structure will generate corresponding centrifugal force according to the operating speed of the horizontal reciprocating component, thereby adaptively adjusting the gear switch 6.

[0049] In this solution, one end of the valve 3 horizontally slidably installed in the box body 2 is fixed by the clamping assembly on the bracket 4, and the horizontal reciprocating assembly is used to drive the bracket 4 to slide horizontally back and forth on the operating table 1, thereby realizing the wear resistance test of the valve 3; and in the process of the operation of the horizontal reciprocating assembly, the adaptive adjustment structure will follow the action, and at the same time generate corresponding centrifugal force according to the speed of the horizontal reciprocating assembly, and use the centrifugal force to adjust the gear switch 6 on the electric heater 5 accordingly to simulate the heat environment to which the valve 3 is subjected during use.

[0050] As a further solution of the present invention, the horizontal reciprocating assembly includes a fixed frame 7 provided on the operating table 1 and a rotating rod 8 horizontally rotating on the fixed frame 7;

[0051] The bracket 4 is provided with a sleeve 9, and the sleeve 9 is slidably sleeved on the outer wall of the rotating rod 8;

[0052] A DC motor 11 is fixedly mounted horizontally on the operating table 1, and the output end of the DC motor 11 is fixedly connected to one end of the rotating rod 8;

[0053] The operating table 1 is provided with a limiting slide groove 101, and the bottom end of the bracket 4 is located inside the limiting slide groove 101 and slides with each other;

[0054] The outer wall of the rotating rod 8 is provided with a track groove 801 , and a ball 10 is rollingly engaged inside the sleeve 9 , and the ball 10 is also rollingly engaged in the track groove 801 .

[0055] In this embodiment, since the output end of the DC motor 11 is fixedly connected to the rotating rod 8, when the DC motor 11 is started, the output end of the DC motor 11 will drive the rotating rod 8 to rotate;

[0056] Because the ball 10 rolling and engaging inside the sleeve 9 also rolling and engaging in the track groove 801 on the outer wall of the rotating rod 8, and the sleeve 9 is arranged on the bracket 4, the bottom end of the bracket 4 is located inside the limiting slide groove 101 and slides with each other, therefore, during the rotation of the rotating rod 8, the sleeve 9 will drive the bracket 4 to move horizontally back and forth under the action of the limiting slide groove 101 through the mutual cooperation between the ball 10 and the track groove 801.

[0057] As a further solution of the present invention, the adaptive adjustment structure includes a support base 12 provided on the operating table 1 and a transmission rod 13 horizontally rotatably provided on the support base 12;

[0058] The transmission rod 13 is provided with a disk 14, and an I-shaped chute 1401 is provided on the disk 14 along its diameter direction. There are multiple I-shaped chute 1401, and I-shaped sliders 17 are slidably provided inside the multiple I-shaped chute 1401.

[0059] The outer wall of the transmission rod 13 is movably provided with a sleeve 15, and the outer wall of the sleeve 15 is rotatably provided with a rotating frame 16, and the rotating frame 16 and the multiple I-shaped sliders 17 are rotatably connected through multiple connecting rods 18;

[0060] A limit plate 19 is provided on the transmission rod 13, and a spring 20 is movably sleeved on the outer wall of the transmission rod 13. The two ends of the spring 20 respectively abut against the side of the sleeve 15 away from the disc 14 and the limit plate 19;

[0061] An L-shaped rod 21 is provided on the outer wall of the sleeve 15 , and one end of the L-shaped rod 21 is fixedly connected to the gear switch 6 .

[0062] In this embodiment, due to the presence of the spring 20 and the fact that it remains in a compressed state, the sleeve 15, under the action of the spring 20, causes the plurality of I-shaped slide blocks 17 to be located at one end of the plurality of I-shaped chute 1401 close to the center of the disk 14 via the rotating frame 16 and the plurality of connecting rods 18;

[0063] When the transmission rod 13 starts to rotate, the disc 14 will rotate along with the transmission rod 13. At the same time, the rotating frame 16 will also rotate synchronously by interacting with the multiple I-shaped sliders 17 and the multiple I-shaped chutes 1401 through the multiple connecting rods 18. In addition, when the disc 14 reaches a certain rotation speed, the multiple I-shaped sliders 17 will slide in the multiple I-shaped chutes 1401 in a direction away from the center of the disc 14 under the action of centrifugal force. During this process, the I-shaped sliders 17 will push the rotating frame 16 and the sleeve 15 to move away from the disc 14 through the multiple connecting rods 18, and the spring 20 will be further compressed.

[0064] When the sleeve 15 moves away from the disc 14 , the L-shaped rod 21 moves synchronously with the sleeve 15 and adjusts the shift switch 6 to increase the power of the electric heater 5 , that is, the heating intensity of the valve 3 is increased.

[0065] As a further solution of the present invention, a first pulley 22 is provided on the rotating rod 8 , a second pulley 23 is provided on the transmission rod 13 , and the first pulley 22 and the second pulley 23 are connected by a belt 24 .

[0066] In this embodiment, since the No. 1 pulley 22 and the No. 2 pulley 23 are connected by the belt 24, and the No. 1 pulley 22 and the No. 2 pulley 23 are respectively arranged on the rotating rod 8 and the transmission rod 13, during the rotation of the rotating rod 8, the transmission rod 13 will follow and rotate synchronously.

[0067] As a further solution of the present invention, the clamping assembly includes a fixing seat 25 provided on the bracket 4 and a threaded rod 26 threadedly engaged with the fixing seat 25;

[0068] One end of the valve 3 passes through the bracket 4 horizontally, and an annular groove 301 is provided at one end of the valve 3;

[0069] A knob 27 is provided at one end of the threaded rod 26 , and the other end of the threaded rod 26 extends into the annular groove 301 and is locked with each other.

[0070] In this embodiment, when used, one end of the valve 3 provided with an annular groove 301 passes through the box body 2 and the bracket 4 respectively, and the annular groove 301 corresponds to the position of the threaded rod 26; since the threaded rod 26 is threadedly matched with the fixing seat 25, when the threaded rod 26 is driven to rotate by the knob 27, one end of the threaded rod 26 will extend into the annular groove 301 and interlock with each other, thereby fixing one end of the valve 3 to the bracket 4.

[0071] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0072] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A wear simulation device for testing the wear resistance strength of a heavy-duty diesel engine valve, comprising an operating table (1) and a box (2) arranged on the operating table (1), characterized in that: A valve (3) is horizontally slidably provided in the box (2), a bracket (4) is slidably provided on the operating table (1), and a clamping assembly capable of fixing one end of the valve (3) is provided on the bracket (4); The operating table (1) is provided with a horizontal reciprocating assembly, and the horizontal reciprocating assembly is connected to the bracket (4). When the horizontal reciprocating assembly is in operation, the valve (3) will follow the bracket (4) to move back and forth through the clamping assembly; An electric heater (5) is installed in the box (2), and a gear switch (6) is provided on the electric heater (5); The operating table (1) is also provided with an adaptive adjustment structure, which is connected to the horizontal reciprocating component and the gear switch (6) respectively. When the horizontal reciprocating component is in operation, the adaptive adjustment structure will generate a corresponding centrifugal force according to the operating speed of the horizontal reciprocating component, thereby adaptively adjusting the gear switch (6).

2. A wear simulation device for testing the wear resistance strength of heavy-duty diesel engine valves according to claim 1, characterized in that: The horizontal reciprocating assembly comprises a fixed frame (7) arranged on the operating table (1) and a rotating rod (8) arranged on the fixed frame (7) for horizontal rotation; A sleeve (9) is provided on the bracket (4), and the sleeve (9) is slidably sleeved on the outer wall of the rotating rod (8).

3. A wear simulation device for testing the wear resistance strength of valves in heavy-duty diesel engines according to claim 2, characterized in that: A DC motor (11) is fixedly mounted horizontally on the operating table (1), and an output end of the DC motor (11) is fixedly connected to one end of the rotating rod (8); A limiting slide groove (101) is provided on the operating table (1), and the bottom end of the bracket (4) is located inside the limiting slide groove (101) and slides with each other; The outer wall of the rotating rod (8) is provided with a track groove (801), and a ball (10) is rollingly engaged inside the sleeve (9), and the ball (10) is also rollingly engaged in the track groove (801).

4. A wear simulation device for testing the wear resistance strength of valves in heavy-duty diesel engines according to claim 2, characterized in that: The adaptive adjustment structure comprises a support base (12) arranged on the operating table (1) and a transmission rod (13) arranged on the support base (12) for horizontal rotation; A disc (14) is provided on the transmission rod (13), and an I-shaped chute (1401) is provided on the disc (14) along its diameter direction. The I-shaped chute (1401) is provided in plurality, and I-shaped sliding blocks (17) are provided inside the plurality of I-shaped chute (1401) for sliding movement.

5. A wear simulation device for testing the wear resistance strength of valves in heavy-duty diesel engines according to claim 4, characterized in that: The outer wall of the transmission rod (13) is movably sleeved with a sleeve seat (15), and the outer wall of the sleeve seat (15) is rotatably provided with a rotating frame (16). The rotating frame (16) and the plurality of I-shaped slide blocks (17) are rotatably connected via a plurality of connecting rods (18).

6. A wear simulation device for testing the wear resistance strength of valves in heavy-duty diesel engines according to claim 5, characterized in that: A limit plate (19) is provided on the transmission rod (13), and a spring (20) is movably sleeved on the outer wall of the transmission rod (13), with both ends of the spring (20) respectively abutting against a side of the sleeve (15) away from the disc (14) and the limit plate (19); An L-shaped rod (21) is provided on the outer wall of the sleeve (15), and one end of the L-shaped rod (21) is fixedly connected to the gear switch (6).

7. A wear simulation device for testing the wear resistance strength of valves in heavy-duty diesel engines according to claim 4, characterized in that: A first pulley (22) is provided on the rotating rod (8), a second pulley (23) is provided on the transmission rod (13), and the first pulley (22) and the second pulley (23) are connected via a belt (24).

8. A wear simulation device for testing the wear resistance strength of valves in heavy-duty diesel engines according to claim 1, characterized in that: The clamping assembly comprises a fixing seat (25) provided on the bracket (4) and a threaded rod (26) threadably engaged with the fixing seat (25); One end of the valve (3) passes through the bracket (4) horizontally, and one end of the valve (3) is provided with an annular groove (301); One end of the threaded rod (26) is provided with a knob (27), and the other end of the threaded rod (26) extends into the annular groove (301) and is locked with each other.

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