Diesel engine and spline lubricating device

Abstract

The diesel engine comprises the spline lubricating device, the spline lubricating device comprises a flywheel casing, a hydraulic pump and an air compressor, a pump shaft of the hydraulic pump extends into the flywheel casing, an outer spline is arranged at the end of the pump shaft, an air compressor gear of the air compressor is arranged in the flywheel casing, the air compressor gear is connected with an inner spline sleeve, and the inner spline sleeve is connected with the flywheel casing. The inner spline sleeve is connected with the outer spline, an oil spraying device is arranged on the flywheel shell, an oil outlet of the oil spraying device directly faces the end face of the inner spline sleeve, and an oil inlet of the oil spraying device is connected with a lubricating oil pipe. Due to the fact that the oil spraying device is right opposite to the end face of the inner spline sleeve, the oil spraying device sprays lubricating oil to the position close to the spline meshing position to conduct forced lubrication on the spline, compared with splash lubrication, the forced lubrication mode can enable the lubricating oil to be better attached to the spline, and the spline can be well lubricated.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engines, and specifically, to a diesel engine and a spline lubrication device. Background Art

[0002] Generally, the lubrication method for gears and splines in the engine flywheel housing adopts splash lubrication. This lubrication method is an automatic lubrication formed by using the rotation of rotating parts in a closed space at a relatively high speed to splash and atomize lubricating oil into small droplets and bring them to the friction pair. This method has a simple structure, but the lubrication effect is poor. Summary of the Utility Model

[0003] Aiming at the above deficiencies, the technical problem to be solved by the utility model is: to provide a diesel engine and a spline lubrication device with good lubrication effect for the spline connecting the pump shaft of the hydraulic pump and the air compressor gear.

[0004] To solve the above first technical problem, the technical solution of the utility model is:

[0005] A spline lubrication device, comprising: a flywheel housing, a hydraulic pump and an air compressor. The pump shaft of the hydraulic pump extends into the flywheel housing. An external spline is provided at the end of the pump shaft. The air compressor gear of the air compressor is arranged in the flywheel housing. An internal spline sleeve is connected to the air compressor gear. The internal spline sleeve is connected to the external spline. An oil injection device is provided on the flywheel housing. The oil outlet of the oil injection device faces the end face of the internal spline sleeve. The oil inlet of the oil injection device is connected to a lubricating oil pipe.

[0006] Preferably, the oil injection device is an atomizing oil injection device.

[0007] Preferably, the atomizing oil injection device includes a spray body fixed on the flywheel housing. The oil inlet and the oil outlet are both arranged on the spray body. Atomizing holes communicating between the oil inlet and the oil outlet are also provided on the spray body.

[0008] Preferably, a quick connector is provided at one end of the lubricating oil pipe connected to the spray body. The quick connector is provided with an annular groove, and the annular groove communicates with the lubricating oil pipe and the oil inlet respectively.

[0009] Preferably, the spray body is a hollow bolt. The hollow bolt is threadedly connected to the flywheel housing. The oil inlet is arranged along the radial direction of the hollow bolt. The oil outlet and the atomizing holes are arranged along the axial direction of the hollow bolt.

[0010] Preferably, the quick connector is sleeved on the rod portion of the hollow bolt and fixed on the flywheel housing by the head of the hollow bolt.

[0011] Preferably, sealing gaskets are respectively provided between the quick joint, the flywheel housing and the head of the hollow bolt.

[0012] Preferably, the lubricating oil pipe is connected to the air compressor.

[0013] Preferably, the internal spline sleeve is sleeved on the spline flange, and the spline flange is fixed on the air compressor gear.

[0014] To solve the above second technical problem, the technical solution of the present utility model is:

[0015] A diesel engine includes the above spline lubrication device.

[0016] After adopting the above technical solution, the beneficial effects of the present utility model are:

[0017] Since the fuel injection device is directly opposite to the end face of the internal spline sleeve, the fuel injection device sprays lubricating oil near the spline engagement, lubricating the spline forcibly. Compared with splash lubrication, this forced lubrication method can better make the lubricating oil adhere to the spline, so that the spline is well lubricated. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of an embodiment of the spline lubrication device of the present utility model;

[0019] Figure 2 is Figure 1 the assembled structural diagram of the fuel injection device and the lubricating oil pipe in

[0020] Figure 3 is a schematic cross-sectional structural diagram of an embodiment of the spline lubrication device of the present utility model;

[0021] Figure 4 is Figure 3 the enlarged structural diagram of the fuel injection device in

[0022] Figure 5 is an exploded structural diagram of the connection structure of the hydraulic pump and the air compressor;

[0023] In the figure: 1. Flywheel housing; 2. Hydraulic pump; 21. External spline; 3. Air compressor; 31. Air compressor gear; 4. Fuel injection device; 41. Spray body; 42. Oil inlet; 43. Oil outlet; 44. Atomization hole; 45. Sealing gasket; 5. Lubricating oil pipe; 51. Quick joint; 52. Ring groove; 6. Spline flange; 61. Internal spline sleeve. Detailed Embodiments

[0024] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] Embodiment 1

[0026] As Figures 1-4 collectively shown, a spline lubrication device includes: a flywheel housing 1, a hydraulic pump 2 and an air compressor 3. The pump shaft of the hydraulic pump 2 extends into the flywheel housing 1. An external spline 21 is provided at the end of the pump shaft. An air compressor gear 31 of the air compressor 3 is arranged in the flywheel housing 1. The air compressor gear 31 is connected with an internal spline sleeve 61. The internal spline sleeve 61 and the external spline 21 are connected. An oil injection device 4 is provided on the flywheel housing 1. The oil outlet 43 of the oil injection device 4 faces the end face of the internal spline sleeve 61. The oil inlet 42 of the oil injection device 4 is connected with a lubricating oil pipe 5.

[0027] Since the oil injection device 4 faces the end face of the internal spline sleeve 61, the oil injection device 4 sprays lubricating oil near the spline engagement, and forcibly lubricates the splines. Compared with splash lubrication, this forced lubrication method can better make the lubricating oil adhere to the splines, so that the splines are well lubricated.

[0028] To further improve the lubrication effect, in this embodiment, the oil injection device 4 is preferably an atomizing oil injection device.

[0029] As Figure 4 shown, the atomizing oil injection device includes a spray body 41 fixed on the flywheel housing 1. The oil inlet 42 and the oil outlet 43 are both arranged on the spray body 41. The spray body 41 is also provided with atomizing holes 44 communicating between the oil inlet 42 and the oil outlet 43. The high-speed lubricating oil in the lubricating oil pipe 5 flows into the atomizing holes 44 after passing through the oil inlet 42. Since the atomizing holes 44 are fine holes with a very small diameter, the lubricating oil is converted into a mist. The mist-like lubricating oil is sprayed out through the oil outlet 43 towards the end face of the internal spline sleeve 61.

[0030] A plurality of oil inlets 42 are arranged along the circumferential direction. One end of the lubricating oil pipe 5 connected to the spray body 41 is provided with a quick connector 51. The quick connector 51 is provided with an annular groove 52. The annular groove 52 is respectively communicated with the lubricating oil pipe 5 and the oil inlet 42. The lubricating oil in the lubricating oil pipe 5 first fills into the annular groove 52, and then the lubricating oil in the annular groove 52 enters the spray body 41 through the plurality of oil inlets 42.

[0031] To facilitate the installation of the spray body 41, in this embodiment, the spray body 41 is preferably a hollow bolt. The hollow bolt is threadedly connected to the flywheel housing 1. The oil inlet 42 is arranged along the radial direction of the hollow bolt. The oil outlet 43 and the atomizing holes 44 are arranged along the axial direction of the hollow bolt. In other embodiments, the spray body 41 can be installed on the flywheel housing 1 by welding or bolt connection.

[0032] The quick connector 51 is sleeved on the rod part of the hollow bolt and fixed on the flywheel housing 1 through the head of the hollow bolt. After the hollow bolt is tightened, the head of the hollow bolt tightly presses on the quick connector 51. The hollow bolt not only plays a role in fixing the quick connector 51, but also plays a role in atomizing fuel injection, organically combining two different functions together.

[0033] To prevent oil leakage, sealing gaskets 45 are respectively provided between the quick connector 51 and the flywheel housing 1 and the head of the hollow bolt.

[0034] Preferably, the lubricating oil pipe 5 is connected to the air compressor 3 to draw oil from the air compressor 3.

[0035] As Figure 5 shown, the internal spline sleeve 61 is sleeved on the spline flange 6, and the spline flange 6 is fixed on the air compressor gear 31.

[0036] Embodiment 2

[0037] A diesel engine includes the spline lubrication device involved in Embodiment 1.

[0038] The above are examples of the best implementation modes of the present invention. The parts not described in detail are all common general knowledge of those of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical inspiration of the present invention is also within the protection scope of the present invention.

Claims

1. A spline lubrication device, comprising: A flywheel housing, a hydraulic pump and an air compressor, wherein the pump shaft of the hydraulic pump extends into the flywheel housing, the end of the pump shaft is provided with an external spline, the air compressor gear of the air compressor is provided in the flywheel housing, the air compressor gear is connected with an internal spline sleeve, the internal spline sleeve is connected to the external spline, and is characterized in that an oil injection device is provided on the flywheel housing, the oil outlet of the oil injection device is directly opposite to the end face of the internal spline sleeve, and the oil inlet of the oil injection device is connected to a lubricating oil pipe.

2. The spline lubrication device according to claim 1, characterized in that: The oil spray device is an atomizing oil spray device.

3. The spline lubrication device according to claim 2, characterized in that: The atomizing oil spray device comprises a spray body fixed on the flywheel housing, the oil inlet and the oil outlet are both arranged on the spray body, and the spray body is also provided with an atomizing hole communicating between the oil inlet and the oil outlet.

4. The spline lubrication device according to claim 3, characterized in that: One end of the lubricating oil pipe connected to the spray body is provided with a quick connector, and the quick connector is provided with an annular groove, and the annular groove is respectively communicated with the lubricating oil pipe and the oil inlet.

5. The spline lubrication device according to claim 4, characterized in that: The spray body is a hollow bolt, the hollow bolt is threadedly connected to the flywheel housing, the oil inlet is arranged along the radial direction of the hollow bolt, and the oil outlet and the atomization hole are arranged along the axial direction of the hollow bolt.

6. The spline lubrication device according to claim 5, characterized in that: The quick connector is sleeved on the rod of the hollow bolt and is fixed on the flywheel housing through the head of the hollow bolt.

7. The spline lubrication device according to claim 6, characterized in that: Sealing gaskets are respectively arranged between the quick connector, the flywheel housing and the head of the hollow bolt.

8. The spline lubrication device according to claim 1, characterized in that: The lubricating oil pipe is connected to the air compressor.

9. The spline lubrication device according to claim 1, characterized in that: The inner spline sleeve is arranged on the spline flange, and the spline flange is fixed on the air compressor gear.

10. A diesel engine, characterized in that: A spline lubrication device comprising any one of claims 1-9.

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