阅读说明：本技术 多液室环状液压扭振减振器 (Multi-liquid chamber annular hydraulic torsional vibration damper ) 是由 陈志勇 高鑫 拱超凡 赵路洋 郑鹏 于 2019-10-29 设计创作，主要内容包括：本发明公开了一种多液室环状液压扭振减振器,满足汽车传动系复杂扭振工况下的减振要求,包括与左侧发动机曲轴轴端通过法兰盘连接的橡胶固定板,与橡胶固定板连接的左侧橡胶液室,与橡胶液室另一端连接的壳体,与壳体另一端连接的右侧橡胶液室,与右侧橡胶液室另一端连接的橡胶固定板,橡胶固定板通过法兰盘与右侧发动机曲轴轴端连接；壳体两端与左右两侧橡胶液室之间均设置有惯性通道,壳体内设置有与对应侧的惯性通道连通的两块橡胶膜；橡胶液室内部以其回转轴线为轴心,均布设置有多个橡胶小液室,每个橡胶小液室均与惯性通道连通；橡胶小液室与惯性通道及橡胶膜形成多个流体循环系统；橡胶固定板、橡胶液室、惯性通道以及壳体共旋转轴线。(The invention discloses a multi-fluid-chamber annular hydraulic torsional vibration damper, which meets the damping requirement of an automobile transmission system under the complex torsional vibration working condition and comprises a rubber fixing plate, a left rubber fluid chamber, a shell, a right rubber fluid chamber and a rubber fixing plate, wherein the rubber fixing plate is connected with the shaft end of a crankshaft of a left engine through a flange plate; inertia channels are arranged between the two ends of the shell and the left and right rubber liquid chambers, and two rubber membranes communicated with the inertia channels on the corresponding sides are arranged in the shell; the inside of the rubber liquid chamber takes the rotation axis as the axis, a plurality of small rubber liquid chambers are uniformly distributed and arranged, and each small rubber liquid chamber is communicated with the inertia channel; the small rubber liquid chamber, the inertia channel and the rubber film form a plurality of fluid circulating systems; the rubber fixing plate, the rubber liquid chamber, the inertia channel and the shell share the rotation axis.)

1. A multi-chamber annular hydraulic torsional vibration damper comprising: the rubber fixing plate is connected with the shaft end of the crankshaft of the left engine through a flange plate, the left rubber liquid chamber is connected with the rubber fixing plate, the shell is connected with the other end of the rubber liquid chamber, the right rubber liquid chamber is connected with the other end of the shell, the rubber fixing plate is connected with the other end of the right rubber liquid chamber, and the rubber fixing plate is connected with the shaft end of the crankshaft of the right engine through a flange plate; inertia channels are arranged between the two ends of the shell and the left and right rubber liquid chambers, and two rubber membranes communicated with the inertia channels on the corresponding sides are arranged in the shell; the inside of the rubber liquid chamber takes the rotation axis as the axis, a plurality of small rubber liquid chambers are uniformly distributed and arranged, and each small rubber liquid chamber is communicated with the inertia channel; the small rubber liquid chamber, the inertia channel and the rubber film form a plurality of fluid circulating systems; the rubber fixing plate, the rubber liquid chamber, the inertia channel and the shell share the rotation axis.

2. The multi-fluid chamber annular hydraulic torsional vibration damper of claim 1 wherein said rubber fluid chambers are connected to the rubber mounting plate by a vulcanization process; the rubber liquid chamber is of a rubber filling structure, the rubber liquid chambers are internally provided with cavities at intervals of 120 degrees along the circumferential direction by taking a rotation axis as an axis, the space shape of each rubber liquid chamber is in a propeller blade shape, propeller blade-shaped through holes in the same form as the rubber liquid chambers are arranged on the inertia channel, and the propeller blade-shaped through holes are communicated with the corresponding rubber liquid chambers.

3. A multi-chamber annular hydraulic torsional vibration damper of claim 1 in which said small rubber chambers and rubber membranes are filled with hydraulic oil.

4. The multi-chamber annular hydraulic torsional vibration damper of claim 1 in which three vent holes are uniformly formed in the outer circumference of said housing.

5. The multi-chamber annular hydraulic torsional vibration damper of claim 1, wherein a retainer plate is connected between said rubber retainer plate and said housing.

6. The multi-chamber annular hydraulic torsional vibration damper of claim 5, wherein the middle of the outer end of the housing is provided with a limiting groove, one end of the limiting plate is connected with the limiting groove, and the other end of the limiting plate is connected with the rear end of the rubber fixing plate.

Technical Field

The invention relates to a transmission damping part on an automobile, in particular to a multi-liquid-chamber annular hydraulic torsional vibration damper.

Background

During operation of the piston engine, vibrations due to the explosion are transmitted to the crankshaft via the piston connecting rod, causing instantaneous angular velocity changes in the crankshaft revolutions, which changes affect the vibrations of the engine crankshaft and the subsequent parts connected to the crankshaft.

In order to reduce vibration and enable the vibration to reach a reasonable range, the conventional engine is provided with a torsional vibration damper at the free end of a crankshaft. Generally, the existing torsional vibration damper mostly adopts a rubber type torsional vibration damper or a silicone oil torsional vibration damper, and the damper can be applied to some vehicle engines with low power and cannot be applied to heavy-load engines such as low-speed diesel engines. The existing low-speed diesel engine adopts engine oil as a torsional vibration damper of a damping medium, and absorbs crankshaft vibration through the damping action of the engine oil and the action of a matched spring. In order to supply engine oil to the torsional vibration damper, the existing oil supply device of the torsional vibration damper is directly externally connected with an oil supply pipe of the engine; however, the oil pressure of the engine directly determines the oil amount entering the torsional vibration damper, and the torsional vibration damper cannot be guaranteed to work according to the set power, so that the damper cannot achieve the set damping effect.

Disclosure of Invention

The invention provides a multi-liquid-chamber annular hydraulic torsional vibration damper, which aims to solve the problems that the conventional torsional vibration damper has insufficient damping performance, a complex structure and high cost and cannot meet the requirement of a transmission system under a complex working condition of damping vibration.

The purpose of the invention is realized by the following technical scheme:

a multi-chamber annular hydraulic torsional vibration damper comprising: the rubber fixing plate is connected with the shaft end of the crankshaft of the left engine through a flange plate, the left rubber liquid chamber is connected with the rubber fixing plate, the shell is connected with the other end of the rubber liquid chamber, the right rubber liquid chamber is connected with the other end of the shell, the rubber fixing plate is connected with the other end of the right rubber liquid chamber, and the rubber fixing plate is connected with the shaft end of the crankshaft of the right engine through a flange plate; the rubber liquid chambers on the left side and the right side are connected with the shell to form a whole, and the whole is in a mirror symmetry structure relative to the axial center plane of the shell; inertia channels are arranged between the two ends of the shell and the left and right rubber liquid chambers, and two rubber membranes communicated with the inertia channels on the corresponding sides are arranged in the shell; the inside of the rubber liquid chamber takes the rotation axis as the axis, a plurality of small rubber liquid chambers are uniformly distributed and arranged, and each small rubber liquid chamber is communicated with the inertia channel; the small rubber liquid chamber, the inertia channel and the rubber film form a plurality of fluid circulating systems; the rubber fixing plate, the rubber liquid chamber, the inertia channel and the shell share the rotation axis.

Further, the rubber liquid chamber is connected with the rubber fixing plate by adopting a vulcanization process; the rubber liquid chamber is of a rubber filling structure, the rubber liquid chambers are internally provided with cavities at intervals of 120 degrees along the circumferential direction by taking a rotation axis as an axis, the space shape of each rubber liquid chamber is in a propeller blade shape, propeller blade-shaped through holes in the same form as the rubber liquid chambers are arranged on the inertia channel, and the propeller blade-shaped through holes are communicated with the corresponding rubber liquid chambers.

Further, the small rubber liquid chamber and the rubber membrane are filled with hydraulic oil.

Furthermore, three vent holes are uniformly distributed on the outer circumference of the shell.

Furthermore, a limiting plate is connected between the rubber fixing plate and the shell.

Furthermore, a limiting groove is formed in the middle of the outer end of the shell, one end of the limiting plate is connected with the limiting groove, and the other end of the limiting plate is connected to the rear end of the rubber fixing plate.

The technical scheme of the invention brings beneficial results:

1. the invention can meet the requirement of the transmission system under the complex working condition of vibration reduction, when the transmission system is excited by high frequency and small amplitude, the liquid hardly flows due to inertia, and the liquid in the explaining channel vibrates at high speed along with the rubber membrane by utilizing the low rigidity characteristic of the rubber membrane, thereby eliminating dynamic hardening. When the liquid is excited by low frequency and large amplitude, when the liquid flows through the inertia channel, the shock absorber generates a large damping effect due to large on-way energy loss generated in the inertia channel and local energy loss generated at the inlet and the outlet for overcoming the inertia of the liquid column, so that the vibration energy is dissipated as soon as possible, and the vibration is effectively attenuated.

2. The damping force inside the damping liquid chamber can be changed by changing the number and the space size of the rubber liquid chambers and the width of the corresponding inertia channel port, so that the speed of the fluid in the damping liquid chamber is changed, and torsional vibration can be effectively attenuated; meanwhile, the rubber liquid chamber is connected with the rubber fixing plate, the shell and the like through a vulcanization process, so that the rubber sealing device is excellent in sealing property and low in overall cost.

3. The rubber membrane 6 is connected with the atmosphere through a vent hole 10, and when the rubber membrane is excited to change, the pressure of the liquid chamber is promoted to be balanced towards the atmospheric pressure, so that the device is automatically adjusted to be in a more ideal pressure working range.

Drawings

FIG. 1 is an assembled view, partially in elevation, of a multi-fluid chamber annular hydraulic torsional vibration damper of the present invention;

FIG. 2 is an assembled view, in top full section, of the multi-fluid chamber annular hydraulic torsional vibration damper of the present invention;

FIG. 3 is a left side elevational view of an assembled multi-chamber annular hydraulic torsional vibration damper of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 1;

FIG. 5 is a sectional view taken along line B-B of FIG. 1;

FIG. 6 is an isometric view of an assembled multi-chamber annular hydraulic torsional vibration damper of the present invention;

FIG. 7(a) is a front view of the inertial channel of the present invention;

FIG. 7(b) is a rear view of the inertial channel of the present invention;

FIG. 8 is a cross-sectional view of the inertia track of the present invention;

FIG. 9 is an isometric view of the housing of the present invention;

FIG. 10 is a front view of the housing of the present invention;

FIG. 11 is an isometric view of a stop plate according to the present invention;

FIG. 12 is a front view of a rubber retaining plate according to the present invention;

FIG. 13 is a cross-sectional view of a rubber membrane according to the present invention;

FIG. 14 is a cross-sectional view of the rubber liquid chamber according to the present invention;

FIG. 15 is an isometric view of a rubberized fluid chamber according to the invention.

FIG. 16 is a front view of the rubber liquid chamber of the present invention;

fig. 17 is an isometric view of an axial end connection flange disk of the present invention.

In the figure: 1-an engine crankshaft; 2-a nut; 3-a flange plate; 4-rubber fixing plate; 5-a rubber liquid chamber; 6-rubber membrane; 7-a limiting plate; 8-rubber small liquid chamber; 9-an inertial channel; 10-a vent hole; 11-a housing; 12-a limiting groove; 13-stud.

Detailed Description

The technical scheme of the invention is described in detail in the following with reference to the attached drawings:

as shown in fig. 1 to 6, a multiple fluid chamber annular hydraulic torsional vibration damper includes: the engine crankshaft end sealing device comprises a rubber fixing plate 4 connected with the shaft end of a left engine crankshaft 1 through a flange 3, a left rubber liquid chamber 5 connected with the rubber fixing plate 4, a shell 11 connected with the other end of the rubber liquid chamber 5, a right rubber liquid chamber connected with the other end of the shell, and a rubber fixing plate connected with the other end of the right rubber liquid chamber, wherein the rubber fixing plate is connected with the shaft end of a right engine crankshaft through a flange. The left and right rubber liquid chambers 5 are connected with the shell 11 to form a whole body, and the whole body is in a mirror symmetry structure relative to the axial center plane of the shell 11. Inertia passages 9 are arranged between the two ends of the shell 11 and the left and right rubber liquid chambers 5, and two rubber membranes 6 communicated with the inertia passages 9 on the corresponding sides are arranged in the shell 11. The inside of the rubber liquid chamber 5 takes the rotation axis thereof as the axis, a plurality of rubber small liquid chambers 8 are uniformly distributed and arranged, and each rubber small liquid chamber 8 is communicated with the inertia channel 9. The rubber fixing plate 4, the rubber liquid chamber 5, the inertia path 9 and the housing 11 are coaxial. The small rubber liquid chamber 8, the inertia channel 9 and the rubber membrane 6 form a plurality of fluid circulating systems, and the maximum adjustable damping range of the torsional vibration damper is greatly increased in a limited space through the hydraulic damping channel.

As shown in fig. 1, 6, 12 and 17, the rubber fixing plate 4 is of a ring-like disc structure, and the rubber fixing plate 4 is provided with uniformly distributed threaded holes which are coaxial with the bolt through holes of the flange 3, have the same size and number, and are parallel to and equidistant from the rotation axis of the rubber liquid chamber 5. Holes in the flange 3 and the rubber fixing plate 4 are completely and symmetrically distributed, and the rubber fixing plate 4 is fixed on the flange 3 through the stud 13 and the nut 2.

As shown in fig. 8 to 16, the rubber liquid chamber 5 is connected with the rubber fixing plate 4 by a vulcanization process, the rubber liquid chamber 5 is a rubber filling structure as a whole, a part of blade-shaped independent cavities are dug out at intervals of 120 degrees along the circumferential direction by taking the rotation axis as the axis inside the rubber liquid chamber 5 to form the rubber small liquid chambers 8, the space shape of each rubber small liquid chamber 8 is similar to that of a propeller blade, and a larger area of liquid can be squeezed when the rubber is twisted. The inertia channel 9 fixed at the end of the shell 11 is provided with a propeller blade-shaped through hole with the same form as the rubber small liquid chamber 8, the inertia channel 9 and the rubber membrane 6 positioned in the shell form a plurality of fluid circulating systems, and the maximum adjustable damping range of the torsional vibration damper is greatly increased in a limited space. The rubber fixing plate 4, the rubber liquid chamber 5, the inertia path 9 and the housing 11 are coaxial.

The small rubber liquid chambers 8 and the rubber membrane 6 are filled with hydraulic oil, when the engine crankshaft 1 transmits power, because the instantaneous speeds of two shafts cannot be kept synchronous, the generated differential speed can enable the small rubber liquid chambers 5 to deform, the rubber fixing plate 4 drives the small rubber liquid chambers 5 to twist, the small rubber liquid chambers 8 are extruded and deformed, the hydraulic oil enters the inertia channels 9 from the small rubber liquid chambers 8, each small rubber liquid chamber 8 is correspondingly communicated with one inertia channel 9 through hole, and fluid enters the rubber membrane under the damping action in the inertia channels. When the rubber liquid chamber is excited by low frequency and large amplitude, the liquid will flow back and forth between the rubber small liquid chamber 8 and the liquid chamber formed by the rubber membrane 6 through the inertia channel. When liquid flows through the inertia channel, the vibration absorber generates a large damping effect due to large on-way energy loss generated by the movement of a liquid column in the inertia channel and local energy loss generated by overcoming the inertia of the liquid column at the inlet and the outlet of the inertia channel, so that the vibration energy is dissipated as soon as possible, and the aim of damping vibration is fulfilled. When the inertia is excited by high frequency and small amplitude, the liquid in the inertia channel 9 has large inertia and hardly flows in time, and meanwhile, the liquid in the inertia channel vibrates at high speed along with the rubber membrane due to the low rigidity characteristic of the rubber membrane during small deformation, so that the high frequency dynamic rigidity is reduced, and the effect of dynamic hardening is eliminated.

The main material of the shock absorber is rubber, and the shock absorber achieves the design purpose of shock absorption by utilizing the characteristic of high elasticity state at normal temperature. Rubber is mainly filled between the rubber membrane 6 and the rubber fixing plate 4 on both sides (rubber liquid chamber 5). As shown in fig. 9, the casing is made of metal or other materials with certain rigidity, three vent holes 10 are uniformly distributed on the outer circumference of the casing 11, the three vent holes are located at the axial middle position of the outer circumference, and when the rubber membrane is excited by high frequency and small amplitude and deforms by virtue of the low rigidity characteristic of small deformation, the liquid pressure in the rubber liquid chamber is balanced by atmospheric pressure, so that the rubber membrane 6 is limited from being damaged due to too large deformation.

As shown in fig. 1 and 11, a limiting plate 7 is connected between the rubber fixing plate 4 and the casing, a limiting groove 12 is formed in the middle of the outer end of the casing 11, one end of the limiting plate 7 is connected with the limiting groove 12, the other end of the limiting plate is connected to the rear end of the rubber fixing plate 4, the limiting plate 7 provides a twisting track for rubber filling outside the small rubber liquid chamber 8 in the rubber liquid chamber 5 when twisting, the arc length of the limiting groove 12 limits the maximum twisting angle, and the phenomenon that the twisting angle is too large to cause irreversible damage to the device is prevented. The whole device is provided with the two limiting plates 7 which are symmetrically arranged in a three-quadrant manner, namely the two limiting plates 7 are axially symmetrical and are also radially symmetrically distributed, so that the overall strength and the durability of the device are improved.

The above description is a preferred embodiment of the present invention, but the present invention should not be limited to the disclosure of the embodiment and the drawings. Therefore, it is intended that all equivalents and modifications which do not depart from the spirit of the invention disclosed herein are deemed to be within the scope of the invention.