Gas engine transmission chamber cover assembly

Abstract

The utility model discloses a gas engine transmission chamber cover assembly which comprises a transmission chamber, a chamber cover, a cam shaft, a cam shaft gear and a flange shaft assembled between the inner side of the chamber cover and the end of the cam shaft. The bearing seat is assembled on the chamber cover, a cam shaft lining is assembled in the bearing seat, and the outer end of the flange shaft is assembled in the cam shaft lining; the axial wheel is assembled on the bearing seat, and the outer end of the flange shaft extends into the axial wheel; an upper cover plate is also assembled on the bearing seat; lubricating channels communicated with each other are arranged in the cam shaft and the flange shaft, and the lubricating channels are communicated between the inner circumferential face of the cam shaft lining and the outer circumferential face of the outer end of the flange shaft. The flange shaft is in butt joint with the end of the cam shaft to form rotating support, and assembly between the flange shaft and the cam shaft is facilitated. And an upper cover plate is arranged on the chamber cover, so that the axial wheel is convenient to mount. The lubricating channel can guarantee lubrication at the position of the cam shaft bush, the service life of the cam shaft bush is prolonged, a lubricating source comes from the transmission chamber, and a lubricating structure does not need to be additionally arranged.

Description

Technical Field

[0001] The utility model belongs to the technical field of generators, and particularly relates to a gas engine transmission chamber cover assembly. Background Art

[0002] A gas generator is a new type of high-efficiency new energy generator that uses combustible gases such as liquefied gas and natural gas as fuel to replace gasoline and diesel as the power of the engine; it includes a gas engine body, a transmission chamber is formed inside the gas engine body, and a camshaft, a crankshaft and corresponding gears are assembled in the transmission chamber, and then a chamber cover is used to seal the end of the transmission chamber to make the transmission chamber in a relatively closed state; currently, the chamber cover mainly considers how to better seal the transmission chamber and prevent the lubricating fluid in the transmission chamber from leaking; little consideration is given to how to design the docking relationship with the camshaft on the chamber cover and the problem of convenient installation and disassembly; based on this, further research can be carried out on the structure of the transmission chamber cover to solve the above-related problems. Summary of the Utility Model

[0003] Aiming at the above technical problems, the purpose of the utility model is to provide a gas engine transmission chamber cover assembly that can be conveniently installed and disassembled.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A gas engine transmission chamber cover assembly includes a transmission chamber and a chamber cover assembled outside the transmission chamber, and a camshaft is assembled in the transmission chamber; a camshaft gear is assembled at the end of the camshaft, and further includes: a flange shaft assembled between the inner side of the chamber cover and the end of the camshaft, and the inner end of the flange shaft is docked with the end of the camshaft;

[0006] And a bearing seat assembled on the chamber cover, a camshaft bushing is assembled in the bearing seat, and the outer end of the flange shaft is assembled in the camshaft bushing;

[0007] And an axial wheel assembled on the bearing seat, and the outer end of the flange shaft extends into the axial wheel;

[0008] An upper cover plate for covering the axial wheel and the outer end of the flange shaft is further assembled on the bearing seat;

[0009] An intercommunicating lubrication channel is provided between the inside of the camshaft and the inside of the flange shaft, and the lubrication channel communicates between the inner peripheral surface of the camshaft bushing and the outer peripheral surface of the outer end of the flange shaft.

[0010] As a further solution, the lubrication channel includes an axial hole formed axially along the center line position of the camshaft and the center line position of the flange shaft, and a radial hole formed radially along the camshaft and the flange shaft and communicating with the axial hole;

[0011] The radial hole of the flange shaft communicates with the inner peripheral surface of the camshaft bushing and the outer peripheral surface of the outer end of the flange shaft.

[0012] As a further solution, a positioning post extending towards the inner side of the upper cover plate is fixedly arranged at the center of the upper cover plate, a positioning hole adapted to the positioning post is formed on the outer end face of the flange shaft, and the front end of the positioning post extends into the positioning hole.

[0013] The lubrication channel communicates with the gap formed between the inner wall of the positioning hole and the outer wall of the front end of the positioning post.

[0014] As a further solution, one end of the bearing seat close to the upper cover plate has a first radial step surface and a second radial step surface;

[0015] The periphery of the inner side of the upper cover plate fits with the first radial step surface, a thrust ring is arranged at the second radial step surface, the thrust ring is sleeved on the flange shaft, the thrust ring is located between the inner side surface of the axial wheel and the second radial step surface, and an axial pin is assembled between the thrust ring and the bearing seat.

[0016] As a further solution, a third radial step surface is arranged in the bearing seat between the first radial step surface and the second radial step surface, an annular extension sleeve extends from the middle part of the inner side of the upper cover plate, and a first seal is arranged between the inner side surface of the upper cover plate, the outer peripheral surface of the extension sleeve and the third radial step surface.

[0017] As a further solution, the front end of the extension sleeve extends into the bearing seat to form an installation hole section between the second radial step surface and the third radial step surface, and the front end of the extension sleeve abuts against the outer side of the axial wheel.

[0018] As a further solution, a connection is formed between the axial wheel, the flange shaft and the camshaft through axially arranged connecting parts.

[0019] As a further solution, a second seal is arranged between the outer periphery of the bearing seat and the chamber cover.

[0020] As a further solution, a crankshaft is further assembled in the transmission chamber below the camshaft, and a crankshaft gear is assembled at the end of the crankshaft;

[0021] A middle assembly hole is formed in the middle of the chamber cover, a retaining collar is assembled in the middle assembly hole, the inner end of the retaining collar is clamped with the end of the crankshaft, and the axis of the retaining collar coincides with the axis of the crankshaft;

[0022] A middle cover plate for sealing the middle assembly hole is assembled by screws on the middle part of the outer side of the chamber cover.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] 1. By assembling a bearing seat on the chamber cover, a flange shaft is rotatably arranged in the bearing seat, and the flange shaft is docked with the end of the camshaft to form a rotational support, which facilitates the assembly between the flange shaft and the camshaft.

[0025] 2. By arranging an upper cover plate on the chamber cover, it is convenient to install the axial wheel.

[0026] 3. By arranging a lubrication channel, the lubrication at the camshaft bushing can be ensured, the service life of the camshaft bushing can be extended, and the lubrication source comes from the transmission chamber, without additionally arranging a lubrication structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0028] Figure 1 is a schematic side structure view of the present invention;

[0029] Figure 2 is Figure 1 a schematic cross-sectional structure view along the A-A direction in

[0030] Figure 3 is Figure 2 a schematic structure view after removing the transmission chamber;

[0031] Figure 4 is Figure 3 an enlarged schematic view of part B in

[0032] In the figures:

[0033] 10. Transmission chamber, 11. Chamber cover, 12. Camshaft, 13. Camshaft gear, 14. Flange shaft, 15. Card sleeve, 16. Positioning pin, 17. Bearing seat, 18. Camshaft bushing, 19. Assembly through hole;

[0034] 20. Connecting ring, 21. Axial wheel, 22. Upper cover plate, 23. Axial hole passage, 24. Radial hole passage, 25. Positioning column, 26. Positioning hole, 27. Oil passage hole, 28. First radial step surface, 29. Second radial step surface;

[0035] 30. Thrust ring, 31. Axial pin, 32. Third radial step surface, 33. Extension sleeve, 34. First seal, 35. Installation hole section, 36. Connector, 37. Second seal, 38. Crankshaft, 39. Crankshaft gear;

[0036] 40. Intermediate assembly hole, 41. Retaining collar, 42. Intermediate cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] Please refer to Figures 1-4 As shown, the gas engine transmission chamber cover assembly includes a transmission chamber 10 and a chamber cover 11 assembled outside the transmission chamber 10. A camshaft 12 is assembled in the transmission chamber 10; a camshaft gear 13 is assembled at the end of the camshaft 12. The transmission chamber 10 is formed within the engine body and is used to assemble the gear shaft and corresponding gears; the chamber cover 11 is used to seal the end of the transmission chamber 10.

[0039] A flange shaft 14 is assembled between the inner side of the chamber cover 11 and the end of the camshaft 12. The inner end of the flange shaft 14 is butted against the end of the camshaft 12; the flange shaft 14 supports the end of the camshaft 12. A clamping sleeve 15 is provided at the inner end of the flange shaft 14 for the insertion of the end of the camshaft 12. After the camshaft 12 is inserted, the axis of the camshaft 12 coincides with the axis of the flange shaft 14; a positioning pin 16 is used for butt joint and positioning between the end face of the camshaft 12 and the bottom of the clamping sleeve 15 of the flange shaft 14 to ensure stable assembly and accuracy between the two. Among them, the end face of the camshaft 12 fits with the inner bottom surface of the clamping sleeve 15.

[0040] And a bearing seat 17 assembled on the chamber cover 11. A camshaft bushing 18 is assembled in the bearing seat 17. The outer end of the flange shaft 14 is assembled in the camshaft bushing 18; an assembly through hole 19 for the bearing seat 17 to be inserted is provided on the chamber cover 11. The assembly through hole 19 communicates with the outside and the inside of the chamber cover 11. The inside of the bearing seat 17 is hollow. A connecting ring 20 for connection with the chamber cover 11 is formed at the edge of the bearing seat 17 on the outside of the chamber cover 11. The connecting ring 20 and the chamber cover 11 are fixedly connected by screws, so as to assemble the bearing seat 17 and the chamber cover 11. The inner end of the bearing seat 17 extends into the assembly through hole 19 and is butted against the flange shaft 14.

[0041] And an axial wheel 21 assembled on the bearing seat 17. The outer end of the flange shaft 14 extends into the axial wheel 21; an upper cover plate 22 for sealing the axial wheel 21 and the outer end of the flange shaft 14 is also assembled on the bearing seat 17 for protection and position constraint.

[0042] There are interconnected lubrication channels inside the camshaft 12 and inside the flange shaft 14. The lubrication channels are connected between the inner peripheral surface of the camshaft bushing 18 and the outer peripheral surface of the outer end of the flange shaft 14. The lubricating fluid in the transmission chamber 10 is drained through the lubrication channels so that it is drained between the camshaft bushing 18 and the flange shaft 14 to lubricate the rotating surface between the flange shaft 14 and the camshaft bushing 18.

[0043] In some embodiments, the lubrication channels include axial channels 23 arranged axially along the center line position of the camshaft 12 and the center line position of the flange shaft 14, and radial channels 24 that are connected to the axial channels 23 along the radial direction of the camshaft 12, the radial direction of the flange shaft 14; the radial channels of the flange shaft 14 are connected to the inner peripheral surface of the camshaft bushing 18 and the outer peripheral surface of the outer end of the flange shaft 14. That is, the lubricating fluid in the transmission chamber 10 is introduced into the axial channels through the radial channels on the camshaft 12, then flows through the axial channels of the flange shaft 14 to its radial channels, and finally flows to the inner peripheral surface of the camshaft bushing 18 to achieve lubrication.

[0044] In some embodiments, a positioning post 25 extending toward the inside of the upper cover plate 22 is fixedly provided in the center of the upper cover plate 22. A positioning hole 26 adapted to the positioning post 25 is provided on the outer end surface of the flange shaft 14, and the front end of the positioning post 25 extends into the positioning hole 26. After the positioning post 25 is inserted into the positioning hole 26, the axis of the positioning post 25 is collinear with the axis of the flange, thereby ensuring the stable assembly of the flange shaft 14. There is a certain rotational clearance between the outer wall of the front end of the positioning post 25 and the inner wall of the positioning hole 26.

[0045] In some embodiments, the lubrication channels are connected to the gap formed between the inner wall of the positioning hole 26 and the outer wall of the front end of the positioning post 25, so that the lubricating fluid can enter the gap for lubrication; in actual use, that is, an oil passage 27 smaller than the diameter of the axial channel 23 is axially opened at the bottom of the positioning hole 26, so that the lubricating fluid in the lubrication channels enters the positioning hole 26 through the oil passage 27 to achieve lubrication. The design of the small diameter of the oil passage 27 is to prevent too much lubricating fluid from flowing into the gap and finally accumulating in the space between the upper cover plate 22 and the axial wheel 21.

[0046] In some embodiments, the end of the bearing seat 17 close to the upper cover plate 22 has a first radial step surface 28 and a second radial step surface 29; the periphery of the inner side of the upper cover plate 22 is attached to the first radial step surface 28, and a thrust ring 30 is provided at the second radial step surface 29. The thrust ring 30 is sleeved on the flange shaft 14. The thrust ring 30 is between the inner side surface of the axial wheel 21 and the second radial step surface 29. An axial pin 31 is assembled between the thrust ring 30 and the bearing seat 17 for restraint.

[0047] In some embodiments, a third radial step surface 32 is provided in the bearing housing 17 between the first radial step surface 28 and the second radial step surface 29. An annular extension sleeve 33 extends from the middle part of the inner side of the upper cover plate 22. A first seal 34 is arranged between the inner side surface of the upper cover plate 22, the outer peripheral surface of the extension sleeve 33, and the third radial step surface 32. The first seal 34 can be an O-ring seal to seal between the upper cover plate 22 and the bearing housing 17.

[0048] In some embodiments, the front end of the extension sleeve 33 extends into the bearing housing 17 to form a mounting hole section 35 between the second radial step surface 29 and the third radial step surface 32. The front end of the extension sleeve abuts against the outer side of the axial wheel 21 to constrain the axial wheel 21.

[0049] In some embodiments, the axial wheel 21, the flange shaft 14, and the camshaft 12 are connected by axially arranged connecting members 36; the connecting members 36 can be hexagon socket head cap screws to connect the three in a detachable manner, facilitating assembly and disassembly.

[0050] In some embodiments, a second seal 37 is provided between the outer periphery of the bearing housing 17 and the chamber cover 11. The second seal 37 can also be an O-ring seal to seal the assembly position between the bearing housing 17 and the chamber cover 11.

[0051] In some embodiments, a crankshaft 38 is further assembled in the transmission chamber 10 below the camshaft 12. A crankshaft gear 39 is assembled at the end of the crankshaft 38. A middle assembly hole 40 is provided in the middle of the chamber cover 11. A retaining collar 41 is assembled in the middle assembly hole 40. The inner end of the retaining collar 41 is clamped with the end of the crankshaft 38. The axis of the retaining collar 41 coincides with the axis of the crankshaft 38. The outer end of the retaining collar 41 is rotatably assembled in the middle assembly hole 40 to facilitate the docking between the retaining collar 41 and the crankshaft 38; a middle cover plate 42 that seals the middle assembly hole 40 is assembled with screws on the outer middle part of the chamber cover 11 to facilitate the assembly protection and inspection of the retaining collar 41.

[0052] Finally, it should be noted that: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Gas engine transmission chamber cover assembly, including a transmission chamber and a chamber cover assembled on the outside of the transmission chamber, with a camshaft assembled in the transmission chamber; a camshaft gear is assembled at the end of the camshaft, characterized in that, It further includes: A flange shaft assembled between the inner side of the chamber cover and the end of the camshaft, with the inner end of the flange shaft butting against the end of the camshaft; And a bearing seat assembled on the chamber cover, with a camshaft bushing assembled inside the bearing seat, and the outer end of the flange shaft assembled inside the camshaft bushing; And an axial wheel assembled on the bearing seat, with the outer end of the flange shaft extending into the axial wheel; An upper cover plate for covering the axial wheel and the outer end of the flange shaft is also assembled on the bearing seat; A lubrication passage communicating with each other is provided inside the camshaft and the flange shaft, and the lubrication passage communicates between the inner peripheral surface of the camshaft bushing and the outer peripheral surface of the outer end of the flange shaft.

2. The gas engine transmission chamber cover assembly according to claim 1, characterized in that The lubrication passage includes an axial passage axially arranged along the center line position of the camshaft and the center line position of the flange shaft, and a radial passage communicating with the axial passage along the radial direction of the camshaft and the radial direction of the flange shaft; The radial passage of the flange shaft communicates with the space between the inner peripheral surface of the camshaft bushing and the outer peripheral surface of the outer end of the flange shaft.

3. The gas engine transmission chamber cover assembly according to claim 1, wherein, A positioning post extending towards the inner side of the upper cover plate is fixedly arranged at the center of the upper cover plate, and a positioning hole adapted to the positioning post is provided on the outer end surface of the flange shaft, and the front end of the positioning post extends into the positioning hole.

4. The gas engine transmission chamber cover assembly according to claim 3, characterized in that, The lubrication passage communicates with the gap formed between the inner wall of the positioning hole and the outer wall of the front end of the positioning post.

5. The gas engine transmission chamber cover assembly according to claim 1, characterized in that, One end of the bearing seat close to the upper cover plate has a first radial step surface and a second radial step surface; The periphery of the inner side of the upper cover plate fits with the first radial step surface, a thrust ring is arranged at the second radial step surface, the thrust ring is sleeved on the flange shaft, the thrust ring is located between the inner side surface of the axial wheel and the second radial step surface, and an axial pin is assembled between the thrust ring and the bearing seat.

6. The gas engine transmission chamber cover assembly according to claim 5, characterized in that, A third radial step surface is provided inside the bearing seat between the first radial step surface and the second radial step surface, an annular extension sleeve extends from the middle part of the inner side of the upper cover plate, and a first seal is arranged between the inner side surface of the upper cover plate, the outer peripheral surface of the extension sleeve, and the third radial step surface.

7. The gas engine transmission chamber cover assembly according to claim 6, characterized in that, The front end of the extension sleeve extends into the bearing seat to form an installation hole section between the second radial step surface and the third radial step surface, and the front end of the extension sleeve abuts against the outer side of the axial wheel.

8. The gas engine transmission chamber cover assembly according to claim 1, wherein, The axial wheel, the flange shaft, and the camshaft are connected by axially arranged connecting parts.

9. The gas engine transmission chamber cover assembly according to claim 1, characterized in that, A second seal is provided between the outer periphery of the bearing seat and the chamber cover.

10. The gas engine transmission chamber cover assembly according to claim 1, characterized in that, A crankshaft is also assembled in the transmission chamber below the camshaft, and a crankshaft gear is assembled at the end of the crankshaft; A middle assembly hole is provided in the middle of the chamber cover, a retaining collar is assembled in the middle assembly hole, the inner end of the retaining collar is clamped with the end of the crankshaft, and the axis of the retaining collar coincides with the axis of the crankshaft; A middle cover plate for covering the middle assembly hole is assembled by screws on the middle part of the outer side of the chamber cover.

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