CN213479028U

CN213479028U - Novel torsional vibration damper of oil feed mode

Info

Publication number: CN213479028U
Application number: CN202022621284.XU
Authority: CN
Inventors: 刘刚; 孔德禄; 王友兵; 吴姗珊; 李思佳
Original assignee: Chongqing Gearbox Co Ltd
Current assignee: Chongqing Gearbox Co Ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-06-18
Anticipated expiration: 2030-11-13

Abstract

The utility model relates to the technical field of shock absorbers, in particular to a torsional vibration shock absorber with a novel oil feeding mode, which comprises a spline shaft and a bearing, wherein the bearing is sleeved at one end of the spline shaft, a side plate is arranged outside the other end of the spline shaft, an oil return hole is arranged on the side plate, an oil inlet hole is arranged on the bearing, a first oil hole and a second oil hole are arranged on the spline shaft, the oil inlet hole is communicated with the first oil hole, and the first oil hole is communicated with the second oil hole; and a plug is arranged at one end of the first oil hole, which is far away from the oil inlet hole. Inside the damping was just directly entered into through inlet port, first oilhole and second oilhole to the lubricating oil of damping, whole oil circuit in-process did not have the part that needs use lubricating oil, and the loss of lubricating oil is less, and consequently the oil pressure that enters into in the shock absorber is great, and the oil mass of lubricating oil is also enough sufficient to the guarantee shock absorber is in good operating condition, reduces the risk that the damping that leads to because of the oil pressure is not enough is low, frequency modulation damping effect reduces by a wide margin.

Description

Novel torsional vibration damper of oil feed mode

Technical Field

The utility model relates to a shock absorber technical field, concretely relates to torsional vibration shock absorber of novel oil feed mode.

Background

The torsional vibration problem of a diesel engine power device is solved by a reed type torsional vibration damper, and the torsional vibration damper ensures that the damper can transfer the main critical rotating speed to the outside of the working rotating speed range of a diesel engine through the combination of the high elasticity of a reed of the damper and the ideal viscous damping through oil flow, so that the whole shafting can safely operate in the working rotating speed range of the diesel engine. Therefore, the oil inlet pressure and the oil quantity of the shock absorber meet the normal operation requirement and are of great importance.

As shown in fig. 1, in the oil passage of the conventional shock absorber, first, lubricating oil enters the inside of the shock absorber from the oil passage inside the crankshaft 1 through the oil hole 3 on the spline shaft 2, and fills the whole shock absorber; then, under the working state, under the action of oil pressure, oil is ejected out of the shock absorber through an oil return hole 5 on a side plate 4 of the shock absorber, is blocked by a housing 6 on the periphery of the diesel engine and returns to the diesel engine, and finally returns to the whole oil circuit for circulation, so that the whole oil circuit of the shock absorber is completed. The lubricating oil of the shock absorber is supplied by the main lubricating oil circuit through the crankshaft 1, as the number of parts needing lubricating oil in the crankshaft 1 is large, the oil pressure of the main lubricating oil circuit is more lost by each oil-needing part of the shafting, and finally the oil pressure entering the shock absorber is low, so that the damping effect and the frequency modulation vibration reduction can not meet the design requirements, and the safe operation of the shafting of the diesel engine is influenced.

Disclosure of Invention

The utility model discloses lubricating oil to in the shock absorber of present diesel engine is in getting into the shock absorber through the lubricated oil circuit of bent axle at last, because the part that needs use lubricating oil in the bent axle is more, consequently the oil pressure reduction that gets into in the shock absorber leads to the effect of damping not very good, and the damping can not reach the problem of requirement, provides a torsional vibration shock absorber of novel oil feed mode.

In order to achieve the above purpose, the invention provides the following technical scheme:

a torsional vibration damper with a novel oil feeding mode comprises a spline shaft and a bearing, wherein the bearing is sleeved at one end of the spline shaft, a side plate is arranged outside the other end of the spline shaft, an oil return hole is formed in the side plate, an oil inlet hole is formed in the bearing, a first oil hole is formed in the spline shaft along the length direction of the spline shaft, a second oil hole is formed in the circumferential direction of the spline shaft, the oil inlet hole is communicated with the first oil hole, and the first oil hole is communicated with the second oil hole; and a plug is arranged at one end of the first oil hole, which is far away from the oil inlet hole.

Preferably, the second oil hole is disposed perpendicular to the first oil hole. The first oil hole is arranged in parallel with the axis of the spline shaft, and the second oil hole is arranged perpendicular to the axis of the spline shaft, so that the flow path of lubricating oil in the spline shaft can be shortened as much as possible, and the oil pressure in the shock absorber is ensured to be sufficient.

Preferably, the spline shaft is provided with an annular groove, and the annular groove is communicated with the oil inlet hole. Because the spline shaft and the bearing can rotate relatively, in order to ensure sufficient oil quantity, a circle of annular groove is designed on the circumference of the spline shaft, so that lubricating oil can enter the first oil hole through the annular groove after entering the oil inlet hole.

Preferably, the length of the spline shaft is greater than the thickness of the side plate, and the direction of the oil inlet is perpendicular to the axis of the bearing. The spline shaft in the prior art is short, the bearing is located on the inner side of the side plate, and if the oil inlet hole is to be formed in the axial direction of the bearing, the entry of lubricating oil is not facilitated, so that the spline shaft is prolonged, the effect of supporting the bearing is achieved, and the oil inlet hole can be formed in the direction perpendicular to the axial direction of the bearing, so that the lubricating oil can enter conveniently.

Compared with the prior art, the invention has the beneficial effects that: this application is through offering the inlet port on the bearing with spline shaft connection, and set up first oilhole and second oilhole on the spline shaft, the lubricating oil of damping just directly passes through the inlet port like this, inside first oilhole and second oilhole enter into the shock absorber, the part that whole oil circuit in-process need use lubricating oil is less, the loss of lubricating oil is less, consequently, the oil pressure ratio that enters into in the shock absorber is great, the oil mass of lubricating oil is enough also, thereby guarantee shock absorber is in good operating condition, it is low to reduce the damping that leads to because of the oil pressure is not enough, the risk that frequency modulation damping effect reduces by a wide margin.

Description of the drawings:

fig. 1 is a schematic structural view of a conventional shock absorber.

Fig. 2 is the structural schematic diagram of the torsional vibration damper of the novel oil feed mode that this application provided.

FIG. 3 is a schematic structural view of the spline shaft provided by the present application.

The labels in the figure are: 1-crankshaft, 2-spline shaft, 3-oil hole, 4-side plate, 5-oil return hole, 6-housing, 7-oil inlet hole, 8-first oil hole, 9-second oil hole, 10-plug, 11-ring groove and 12-bearing.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

As shown in FIG. 2, the application provides a torsional vibration damper of novel oil feed mode, including integral key shaft 2 and bearing 12, bearing 12 cover is established the one end of integral key shaft 2, the other end of integral key shaft 2 installs curb plate 4 outward. An oil return hole 5 is installed on the side plate 4, an oil inlet hole 7 is formed in the bearing 12, and the oil inlet hole 7 is perpendicular to the axis of the bearing 12.

Spline shaft 2 is compared some that want to be longer in this application compared with prior art's spline shaft 2, and outside the curb plate 4 had been stretched out to the one end of the spline shaft 2 of this application, bearing 12 also was located the outside of curb plate 4, and prior art's spline shaft 2 is than short, and bearing 12 is embedded into in the curb plate 4. After the spline shaft 2 is lengthened, the oil inlet 7 can be formed in the position perpendicular to the axis of the bearing 12, and therefore lubricating oil can enter the oil inlet 7 more easily.

The spline shaft 2 is provided with a first oil hole 8 along the length direction of the spline shaft 2, a second oil hole 9 along the circumferential direction of the spline shaft 2, the oil inlet 7 is communicated with the first oil hole 8, and the first oil hole 8 is communicated with the second oil hole 9. First oilhole 8 and the axis parallel arrangement of integral key shaft 2, second oilhole 9 sets up with the axis of integral key shaft 2 is perpendicular, and second oilhole 9 sets up with first oilhole 8 is perpendicular promptly, and the other end and the inside intercommunication of shock absorber of second oilhole 9 because first oilhole 8 is in integral key shaft 2, for convenient processing, is processed to bearing 12 one side from one side that bearing 12 was kept away from to integral key shaft 2, consequently first oilhole 8 is kept away from the one end of inlet port 7 is installed plug 10, blocks up lubricating oil through plug 10, guarantees the oil pressure and the oil mass of the lubricating oil that gets into in the shock absorber.

During operation, the spline shaft 2 and the bearing 12 may be displaced relative to each other, so that in order to ensure the amount and pressure of the lubricating oil entering the damper, a ring of annular grooves 11 are formed on the circumference of the spline shaft 2, so that the lubricating oil can enter the first oil hole 8 through the annular grooves 11 even if the positions of the spline shaft 2 and the bearing 12 are displaced relative to each other.

The working process is as follows: lubricating oil enters the annular groove 11 on the spline shaft 2 through the oil inlet hole 7 on the bearing 12, then enters the shock absorber through the first oil hole 8 and the second oil hole 9, and finally flows out through the oil outlet hole 3 on the side plate 4 and flows back to the diesel engine to realize oil circuit circulation.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The novel torsional vibration damper with the oil inlet mode is characterized by comprising a spline shaft (2) and a bearing (12), wherein the bearing (12) is sleeved at one end of the spline shaft (2), a side plate (4) is installed outside the other end of the spline shaft (2), an oil return hole (5) is installed on the side plate (4), an oil inlet hole (7) is formed in the bearing (12), a first oil hole (8) is formed in the spline shaft (2) along the length direction of the spline shaft (2), a second oil hole (9) is formed in the spline shaft (2) along the circumferential direction, the oil inlet hole (7) is communicated with the first oil hole (8), and the first oil hole (8) is communicated with the second oil hole (9); and a plug (10) is arranged at one end of the first oil hole (8) far away from the oil inlet hole (7).

2. The novel oil-feeding type torsional vibration damper according to claim 1, wherein the second oil hole (9) is arranged perpendicular to the first oil hole (8).

3. The novel oil-feeding type torsional vibration damper as claimed in claim 1, wherein an annular groove (11) is formed in the spline shaft (2), and the annular groove (11) is communicated with the oil inlet hole (7).

4. The novel oil-feeding type torsional vibration damper as claimed in claim 1, wherein the length of the spline shaft (2) is greater than the thickness of the side plate (4), and the direction of the oil inlet hole (7) is perpendicular to the axis of the bearing (12).