Engine cylinder cover valve flapping driving device
Through the dual cam structure of the engine cylinder head valve slap drive device and the independent drive rocker arm mechanism, the problems of excessive load and high noise of the Z14 cylinder head assembly line slap machine are solved, and the reliability and sealing of the equipment are improved, and the working environment and production efficiency are improved.
Patent Information
- Application Number
- CN202422548886.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-22
AI Technical Summary
In the prior art, the load of the Z14 cylinder head assembly line is too high, resulting in frequent damage to the transmission components such as cam mechanism, drive link mechanism, bearings, pulleys, etc., the equipment failure recovery time is long, the noise is high, the maintenance workload is large, and the valve leakage detection failure rate is high, which affects the health of production and operators.
The engine cylinder head valve slap driving device is adopted, which includes a slap box, a drive motor, a transmission device and a slap device. The slap load is reduced through the dual cam structure, and multiple rocker arm mechanisms are independently driven to improve the slap impact force between the valve and the race, reduce noise and enhance sealing.
It effectively reduces the potential for fatigue damage of the slap device, reduces equipment maintenance costs, reduces noise level, improves product sealing quality and employee working environment comfort, and reduces the rate of valve leakage failure.
Smart Images
Figure CN223136271U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine power and operation, and particularly relates to a valve flapping driving device for an engine cylinder head. Background Art
[0002] The original mechanism of the flapping machine on the Z14 cylinder head subassembly line adopted a single cam profiling flapping (24 sets of valves) driving mode, which was decomposed into cylinders 1 and 4, cylinders 2 and 5, and cylinders 3 and 6, with 8 valves flapping simultaneously by profiling each time.
[0003] Due to the fact that the load of the existing technology greatly exceeds 50%, the transmission components such as the cam mechanism, the driving connecting rod mechanism, the bearings, and the belt pulleys are frequently damaged, thus causing the following problems:
[0004] 1. After the equipment fails, the recovery time each time is long, exceeding 72 hours, which directly affects production delivery.
[0005] 2. The noise generated during the valve flapping process is relatively high. The noise test results show that it is 92 - 95 decibels instantaneously, and the on-site noise requirement is ≤ 80 decibels, which will cause damage to the hearing of the operators.
[0006] 3. The maintenance work is troubled by regular preventive maintenance, PM planned targeted regular replacement of transmission components and related repair and replacement work of cam rollers, resulting in a large amount of maintenance work, labor costs, and cost expenses.
[0007] 4. The unqualified rate of the cylinder head valve leakage detection is 1 / 5. The operators need to re-detect or perform repair and rework, which poses a quality risk. Summary of the Invention
[0008] In view of the above problems, the utility model provides a valve flapping driving device for an engine cylinder head, aiming to eliminate the hidden danger of fatigue damage of the flapping device, avoid the maintenance cost of abnormal damage of the equipment, improve the sealing quality of the product, and improve the comfort of the working environment of the employees.
[0009] To solve the above problems, the technical solution provided by the utility model is as follows:
[0010] A valve flapping driving device for an engine cylinder head, which comprises a flapping box body, a driving motor, a transmission device, and a flapping device, wherein:
[0011] The driving motor is fixedly arranged at the top end inside the flapping box body; the flapping device is fixedly arranged on the bottom surface inside the flapping box body; the driving motor is in transmission connection with the transmission device; the transmission device is in transmission connection with the flapping device; the number of the flapping devices matches the number of the corresponding engine cylinder head valves, and the arrangement positions of the flapping devices correspond to the arrangement positions of the engine cylinder head valves.
[0012] Preferably, the transmission device includes a transmission chain, a transmission sprocket, and a transmission shaft, where:
[0013] The output shaft sprocket of the drive motor is drivingly connected to the transmission chain; the transmission chain is drivingly connected to the transmission sprocket disposed below the output shaft sprocket; the transmission sprocket is rotationally connected to the transmission shaft; a cam support seat is fixedly provided on the bottom surface inside the flapping box body; the cam support seat is disposed at both ends of the transmission shaft, and the transmission shaft passes through the cam support seat and is movably connected to the cam support seat.
[0014] Preferably, a support rod for strengthening the rigidity of the flapping device is provided at the middle position of the transmission shaft; the transmission shaft is movably connected to the support rod; the bottom end of the support rod is fixedly connected to the bottom surface inside the flapping box body.
[0015] Preferably, the flapping device includes a rocker arm device, a flapping rod, and a cam device, where:
[0016] The transmission shaft is connected to the cam device by screw limit; the cam device is slidably connected to the rocker arm device; the rocker arm device is fixedly connected to the flapping rod and drives the flapping rod to move up and down.
[0017] Preferably, a directional angle limit hole is provided inside the cam device; a directional angle limit pin is correspondingly provided at the connection between the transmission shaft and the cam device; the directional angle limit hole and the directional angle limit pin cooperate to fix the cam device on the transmission shaft.
[0018] Preferably, a counting device for preventing the valve from being missed in flapping is provided at one end of the transmission shaft; the counting device is fixedly connected to the flapping box body.
[0019] Preferably, a safety protective cover for blocking foreign objects from entering is provided at the top of the flapping box body.
[0020] Preferably, an oil window for observing the oil level of the lubricating oil of the internal mechanical components of the flapping device is provided at the bottom of the flapping device.
[0021] Preferably, the engine cylinder head valve flapping drive device is applicable to the cylinder head of an L-type engine; the flapping device includes a first row of flapping devices for flapping the intake valve and a second row of flapping devices for flapping the exhaust valve; the first row of flapping devices and the second row of flapping devices are horizontally parallel, vertically staggered and evenly distributed on two parallel transmission shafts; the position of each first row of flapping devices corresponds to the position of the intake valve of the engine cylinder head; the position of each second row of flapping devices corresponds to the position of the exhaust valve of the engine cylinder head.
[0022] Preferably, the valve tapping drive device of the engine cylinder head is applicable to the cylinder heads of V-type engines and W-type engines.
[0023] Compared with the prior art, the present utility model has the following advantages:
[0024] 1. Since the present utility model performs tapping in the order from the base circle to the cam high point and then instantaneously drops to the bottom of the base circle, the double-cam structure can reduce the tapping load by 75%, thereby eliminating the hidden danger of fatigue damage of the tapping device and avoiding the maintenance cost of abnormal damage of the equipment.
[0025] 2. Since the tapping device of the present utility model improves the tapping impact between the valve and the seat ring, the airtightness of the cylinder head is improved, the unqualified rate of part leakage is reduced by 20%, and the sealing quality of the product is improved.
[0026] 3. Since multiple rocker mechanisms of the present utility model independently drive to tap the valves, and the driving motor rotates one circle to complete all valve tapping operations, the on-site noise is reduced to 77 decibels, thereby improving the comfort of the employee working environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1a A side view schematic diagram of the valve tapping drive device of the engine cylinder head according to a specific embodiment of the present utility model;
[0028] Figure 1b A front view schematic diagram of the valve tapping drive device of the engine cylinder head according to a specific embodiment of the present utility model;
[0029] Figure 2 A top view schematic diagram of the valve tapping drive device of the engine cylinder head according to a specific embodiment of the present utility model;
[0030] Figure 3 A structural schematic diagram of the tapping device according to a specific embodiment of the present utility model;
[0031] Figure 4a A structural schematic diagram of the transmission shaft according to a specific embodiment of the present utility model;
[0032] Figure 4b A schematic diagram of the circumferential cross-section of the transmission shaft according to a specific embodiment of the present utility model;
[0033] Figure 5a A front view schematic diagram of the cam device according to a specific embodiment of the present utility model;
[0034] Figure 5b For this Figure 5a A schematic diagram of the sectional view in the A-A direction;
[0035] Figure 5cTop view schematic diagram of the cam device of the specific embodiment of the present utility model;
[0036] Figure 5d Design parameter schematic diagram of the cam device of the specific embodiment of the present utility model;
[0037] Figure 6a Arrangement schematic diagram of the flapping device when applied to Z14, Z15, and Z15N engines in the specific embodiment of the present utility model;
[0038] Figure 6b Top view schematic diagram of the corresponding Z14, Z15, and Z15N engines in the specific embodiment of the present utility model.
[0039] Wherein: 100. Driving motor, 200. Transmission device, 300. Flapping device, 400. Flapping box body, 500. Counting device, 110. Output shaft sprocket, 210. Transmission chain, 220. Transmission sprocket, 230. Transmission shaft, 231. Support rod, 310. First row of flapping devices, 320. Second row of flapping devices, 301. Rocker arm device, 302. Flapping rod, 303. Cam device, 304. Oil window, 331. Oriented angle limit hole, 410. Cam support seat, 420. Safety protective cover Detailed implementation manners
[0040] The following further clarifies the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. After reading the present utility model, various equivalent modifications made by those skilled in the art to the present utility model all fall within the scope defined by the appended claims of this application.
[0041] As Figure 1a 、 1b shown, the engine cylinder head valve flapping drive device includes a flapping box body 400, a driving motor 100, a transmission device 200, and a flapping device 300, wherein:
[0042] The driving motor 100 is fixedly arranged at the top inside the flapping box body 400; the flapping device 300 is fixedly arranged on the bottom surface inside the flapping box body 400; the driving motor 100 is in transmission connection with the transmission device 200; the transmission device 200 is in transmission connection with the flapping device 300; the number of the flapping devices 300 matches the number of the corresponding engine cylinder head valves, and the arrangement positions of the flapping devices 300 correspond to the arrangement positions of the engine cylinder head valves.
[0043] It should be noted that the transmission device 200 includes a transmission chain 210, a transmission sprocket 220, and a transmission shaft 230, wherein:
[0044] The output shaft sprocket 110 of the drive motor 100 is in transmission connection with the drive chain 210; the drive chain 210 is in transmission connection with the drive sprocket 220 arranged below the output shaft sprocket 110 and transmits power to the drive sprocket 220; the drive sprocket 220 is rotatably connected to the drive shaft 230; a cam support seat 410 is fixedly arranged on the inner bottom surface of the flapping box body 400; the cam support seat 410 is arranged at both ends of the drive shaft 230, and the drive shaft 230 penetrates through the cam support seat 410 and is movably connected to the cam support seat 410.
[0045] It should be further noted that a support rod 231 for strengthening the rigidity of the flapping device 300 is arranged at the middle position of the drive shaft 230; the drive shaft 230 is movably connected to the support rod 231; the bottom end of the support rod 231 is fixedly connected to the inner bottom surface of the flapping box body 400.
[0046] As Figure 3 shown, it should be noted that the flapping device 300 includes a rocker arm device 301, a flapping rod 302, and a cam device 303, where:
[0047] The drive shaft 230 is in screw limit connection with the cam device 303; the cam device 303 is in sliding connection with the rocker arm device 301; the rocker arm device 301 is fixedly connected to the flapping rod 302 and drives the flapping rod 302 to move up and down.
[0048] As Figure 4a 、 4b 、5a, 5b, 5c shown, it should be further noted that a directional angle limit hole 331 is arranged inside the cam device 303; a directional angle limit pin is correspondingly arranged at the connection position of the drive shaft 230 and the cam device 303; the directional angle limit hole 331 and the directional angle limit pin cooperate to fix the cam device 303 on the drive shaft 230.
[0049] It should be further noted that, as Figure 4a shown, reference holes for limiting the cam indexing angle of the cam device 303 are uniformly arranged on the drive shaft 230.
[0050] In this specific embodiment, as Figure 4b shown, the cam device 303 is installed on the drive shaft 230 through the directional angle limit hole 331 and is equally divided at 60° on the circumference of the drive shaft 230.
[0051] As Figure 5d shown, in this specific embodiment, the key dimensions of the cam base circle coordinates of the cam device 303 are designed according to the parameters in Figure 5; where α° is used to represent the rotation angle of the equipment for machining the cam; X is used to represent the X coordinate parameter of the equipment for machining the cam; Y is used to represent the Y coordinate parameter of the equipment for machining the cam.
[0052] It should be noted that one end of the transmission shaft 230 is provided with a counting device 500 for checking the number of rotations of the transmission shaft 230 to prevent the valve from missing beats; the counting device 500 is fixedly connected to the flapping box body 400.
[0053] It should be noted that a safety protection cover 420 for blocking foreign objects from entering is provided at the top of the flapping box body 400.
[0054] It should be noted that an oil window 304 for observing the oil level of the lubricating oil of the internal mechanical components of the flapping device 300 is provided at the bottom of the flapping device 300.
[0055] It should be noted that the valve flapping drive device for the engine cylinder head of the present utility model is applicable to the cylinder head of an L-type engine; the flapping device 300 includes a first row of flapping devices 310 for flapping the intake valve and a second row of flapping devices 320 for flapping the exhaust valve; the first row of flapping devices 310 and the second row of flapping devices 320 are horizontally parallel, longitudinally staggered and evenly distributed on two parallel transmission shafts 230; the position of each first row of flapping devices 310 corresponds to the position of the intake valve of the engine cylinder head; the position of each second row of flapping devices 320 corresponds to the position of the exhaust valve of the engine cylinder head.
[0056] Such as Figure 6a 、 6b As shown, in this specific embodiment, the valve flapping drive device for the engine cylinder head of the present utility model is applicable to the flapping operation of the cylinder heads of Z14, Z15, and Z15N engines.
[0057] It should be further noted that the working principle of the valve flapping drive device for the engine cylinder head of the present utility model specifically includes the following steps:
[0058] S100. The drive motor 100 is started, and the output shaft sprocket 110 drives the first row of flapping devices 310 and the second row of flapping devices 320 to operate.
[0059] S200. The first row of flapping devices 310 can complete the flapping operation of the intake valve respectively when the drive motor 100 rotates to 60°, 120°, 180°, 240°, 300°, and 360° from left to right.
[0060] S300. The second row of flapping devices 320 can complete the flapping operation of the exhaust valve respectively when the drive motor 100 rotates to 30°, 90°, 150°, 210°, 270°, and 330° from left to right.
[0061] It should be noted that the valve flapping drive device for the engine cylinder head is applicable to the cylinder heads of V-type engines and W-type engines.
[0062] In the above detailed description, various features are combined together in a single embodiment to simplify the present disclosure. This method of disclosure should not be construed as reflecting an intention that the embodiments of the claimed subject matter require more features than those stated in each claim clearly. On the contrary, as reflected by the appended claims, the present utility model is in a state with fewer features than all the features of the disclosed single embodiment. Therefore, the appended claims are hereby clearly incorporated into the detailed description, where each claim alone serves as a separate preferred embodiment of the present utility model.
[0063] To enable any person skilled in the art to implement or use the present utility model, the disclosed embodiments have been described above. For those skilled in the art, various modification methods of these embodiments are obvious, and the general principles defined herein can also be applied to other embodiments without departing from the spirit and scope of the present disclosure. Therefore, the present disclosure is not limited to the embodiments given herein, but is consistent with the broadest scope of the principles and novel features disclosed in this application.
[0064] The above description includes examples of one or more embodiments. Of course, it is impossible to describe all possible combinations of components or methods for describing the above embodiments, but those of ordinary skill in the art should recognize that each embodiment can be further combined and arranged. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. In addition, with respect to the term "comprising" used in the specification or claims, the coverage of this term is similar to the term "including", as explained when "including" is used as a connecting word in the claims. In addition, any term "or" used in the claims or the specification is to mean "non-exclusive or".
[0065] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present utility model. It should be understood that the above description is only the specific embodiments of the present utility model and is not used to limit the protection scope of the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. An engine cylinder head valve tapping drive device, characterized in that: It includes a flapping box body (400), a driving motor (100), a transmission device (200), and a flapping device (300), where: The driving motor (100) is fixedly arranged at the top inside the flapping box body (400); the flapping device (300) is fixedly arranged on the bottom surface inside the flapping box body (400); the driving motor (100) is in transmission connection with the transmission device (200); the transmission device (200) is in transmission connection with the flapping device (300); the number of the flapping devices (300) matches the number of the engine cylinder head valves, and the arrangement positions of the flapping devices (300) correspond to the arrangement positions of the engine cylinder head valves.
2. The valve tapping drive device for an engine cylinder head according to claim 1, characterized in that: The transmission device (200) includes a transmission chain (210), a transmission sprocket (220), and a transmission shaft (230), where: The output shaft sprocket (110) of the driving motor (100) is in transmission connection with the transmission chain (210); the transmission chain (210) is in transmission connection with the transmission sprocket (220) arranged below the output shaft sprocket (110); the transmission sprocket (220) is rotatably connected to the transmission shaft (230); a cam support seat (410) is fixedly arranged on the bottom surface inside the flapping box body (400); the cam support seat (410) is arranged at both ends of the transmission shaft (230), and the transmission shaft (230) penetrates through the cam support seat (410) and is movably connected to the cam support seat (410).
3. The valve tapping drive device for an engine cylinder head according to claim 2, wherein: A support rod (231) for strengthening the rigidity of the flapping device (300) is arranged at the middle position of the transmission shaft (230); the transmission shaft (230) is movably connected to the support rod (231); the bottom end of the support rod (231) is fixedly connected to the bottom surface inside the flapping box body (400).
4. The valve tapping drive device for an engine cylinder head according to claim 3, wherein: The flapping device (300) includes a rocker arm device (301), a flapping rod (302), and a cam device (303), where: The transmission shaft (230) is in screw limit connection with the cam device (303); the cam device (303) is in sliding connection with the rocker arm device (301); the rocker arm device (301) is fixedly connected to the flapping rod (302) and drives the flapping rod (302) to move up and down.
5. The valve tapping drive device for an engine cylinder head according to claim 4, wherein: A directional angle limit hole (331) is arranged inside the cam device (303); a directional angle limit pin is correspondingly arranged at the connection position between the transmission shaft (230) and the cam device (303); the directional angle limit hole (331) and the directional angle limit pin cooperate to fix the cam device (303) on the transmission shaft (230).
6. The valve tapping drive device for an engine cylinder head according to claim 5, characterized in that: A counting device (500) for preventing the valves from being missed in flapping is arranged at one end of the transmission shaft (230); the counting device (500) is fixedly connected to the flapping box body (400).
7. The valve tapping drive device for an engine cylinder head according to claim 6, characterized in that: A safety protection cover (420) for blocking foreign objects from entering is arranged at the top of the flapping box body (400).
8. The valve tapping drive device for an engine cylinder head according to claim 7, wherein: An oil window (304) for observing the oil level of the lubricating oil of the internal mechanical components of the flapping device (300) is provided at the bottom of the flapping device (300).
9. The valve tapping drive device for an engine cylinder head according to claim 8, characterized in that: The engine cylinder head valve flapping drive device is applicable to the cylinder head of an L-type engine; the flapping device (300) includes a first row of flapping devices (310) for flapping the intake valves and a second row of flapping devices (320) for flapping the exhaust valves; the first row of flapping devices (310) and the second row of flapping devices (320) are horizontally parallel, longitudinally staggered and evenly distributed on the two parallel transmission shafts (230); the position of each of the first row of flapping devices (310) corresponds to the position of the intake valve of the engine cylinder head; the position of each of the second row of flapping devices (320) corresponds to the position of the exhaust valve of the engine cylinder head.
10. The valve tapping drive device for an engine cylinder head according to claim 8, wherein: The engine cylinder head valve flapping drive device is applicable to the cylinder heads of V-type engines and W-type engines.