CN114060450A - Small-diameter-to-axis-ratio integral liquid rubber composite joint and rigidity adjusting method - Google Patents
Small-diameter-to-axis-ratio integral liquid rubber composite joint and rigidity adjusting method Download PDFInfo
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- CN114060450A CN114060450A CN202111296764.6A CN202111296764A CN114060450A CN 114060450 A CN114060450 A CN 114060450A CN 202111296764 A CN202111296764 A CN 202111296764A CN 114060450 A CN114060450 A CN 114060450A
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- 239000007788 liquid Substances 0.000 title claims abstract description 74
- 239000002131 composite material Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000010008 shearing Methods 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000004636 vulcanized rubber Substances 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000013016 damping Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
- F16F13/108—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like characterised by features of plastics springs, e.g. attachment arrangements
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
An integral liquid rubber composite node with a small axial ratio and an adjusting method thereof are disclosed, wherein the liquid rubber composite node comprises a core shaft, a rubber body, a vulcanizing body outer sleeve, a stop block and an integral outer sleeve; vulcanizing the rubber body between the outer sleeve of the vulcanized body and the core shaft, so that the rubber body generates shearing and extruding composite deformation when bearing radial pressure, thereby reducing the radial rigidity of the liquid rubber composite node; the concave pit which is concave towards the inner side of the mandrel is formed in the mandrel, bosses are arranged on two sides of the concave pit, the stopping block is arranged at the concave pit, the maximum outer diameter of the boss of the mandrel is set to be larger than the minimum inner diameter of the stopping block, and when the stopping block and the mandrel move in the axial direction relatively, the boss of the mandrel can block the axial movement of the stopping block, so that the axial rigidity of the liquid rubber composite node is increased, and the small diameter-to-axis ratio of the rigidity of the liquid rubber composite node is realized. The abrasion of wheels and rails of the vehicle can be reduced, and meanwhile, the high axial rigidity is provided, and the running stability of the vehicle is ensured.
Description
Technical Field
The invention relates to the field of rail transit, in particular to a small-diameter axial ratio adjusting method and structure of a liquid rubber composite node.
Background
According to the dynamic requirement, when the rotating arm node is in linear high-speed operation (high-frequency vibration), larger radial rigidity is provided to ensure the operation stability, and the critical speed is improved; when passing a curve (low frequency and large amplitude), smaller radial rigidity performance is provided to ensure the performance of passing the curve, and abrasion is reduced; the common node is difficult to realize the characteristics, and particularly for old lines, large abrasion of wheel rails and lines and high maintenance cost, a new product is required to be used, and the liquid rubber composite node with the characteristics is also required to be used.
The working principle of the liquid rubber composite node is as follows: two hollow cavity structures are designed in the rubber part, the two cavities are communicated through a flow passage design, and a sealed incompressible (viscous) liquid is filled in a cavity in advance. Under the action of load, the volumes in the two cavities change, and liquid flows between the two cavities to generate damping, so that vibration energy is consumed, and the aim of damping vibration is fulfilled. When the vibration is carried out at low frequency, liquid flows up and down through the channel, the small rigidity plays a role in large damping, and the liquid in the high-frequency section cannot flow in time, so that the characteristic of large rigidity is realized.
When the rubber body of the existing liquid rubber composite node bears radial pressure, the rubber body generates extrusion deformation. Due to the limitation of the volume of the liquid rubber composite node, the radial rigidity of the liquid rubber composite node is difficult to reduce by increasing the thickness of the rubber body. Therefore, it is difficult to achieve a small diameter-to-axis ratio of liquid rubber composite node stiffness, namely: the ratio of radial stiffness to axial stiffness is small.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: when the vehicle passes through a curve, the performance of smaller radial rigidity is provided to ensure the performance of passing the curve, the abrasion of the wheel rail is reduced, meanwhile, the larger axial rigidity is provided to ensure the stability of the vehicle operation.
In order to solve the problems, the technical scheme provided by the invention is as follows: a small diameter-to-axis ratio adjusting method for an integral liquid rubber composite node comprises a core shaft, a rubber body, a vulcanized body outer sleeve, a stop block and an integral outer sleeve; vulcanizing the rubber body between the outer sleeve of the vulcanized body and the core shaft, so that the rubber body generates shearing and extruding composite deformation when bearing radial pressure, thereby reducing the radial rigidity of the liquid rubber composite node; the concave pit which is concave towards the inner side of the mandrel is formed in the mandrel, bosses are arranged on two sides of the concave pit, the stopping block is arranged at the concave pit, the maximum outer diameter of the boss of the mandrel is set to be larger than the minimum inner diameter of the stopping block, and when the stopping block and the mandrel move in the axial direction relatively, the boss of the mandrel can block the axial movement of the stopping block, so that the axial rigidity of the liquid rubber composite node is increased, and the small diameter-to-axis ratio of the rigidity of the liquid rubber composite node is realized.
Preferably, an outer inclined plane is arranged on the outer side of the boss, a spacer inclined plane is arranged on the inner side of the outer sleeve of the vulcanizing body, and the rubber body vulcanized between the outer inclined plane of the boss and the spacer inclined plane of the outer sleeve of the vulcanizing body is an inclined rubber layer; the shear deformation of the oblique rubber layer is increased when the oblique rubber layer bears radial pressure by increasing the inclination angle of the outer inclined plane of the boss and the inclination angle of the spacer sleeve inclined plane of the outer sleeve of the vulcanized body, so that the radial rigidity of the liquid rubber composite node is reduced.
Preferably, the inner side of the oblique rubber layer is provided with an inner groove sunken towards the inner side of the oblique rubber layer, and the outer side of the oblique rubber layer is provided with an outer groove sunken towards the inner side of the oblique rubber layer, so that the radial rigidity of the liquid rubber composite node can be reduced when the oblique rubber layer bears radial pressure.
Preferably, the extrusion deformation of the inclined rubber layer is increased when the inclined rubber layer bears the axial load by increasing the inclination angle of the outer inclined surface of the boss and the inclination angle of the spacer inclined surface of the outer sleeve of the vulcanized body, so that the axial rigidity of the liquid rubber composite node is increased.
Preferably, the rubber body vulcanized on the inner side surface of the boss is an axial rubber layer, when the stop block and the mandrel move relatively in the axial direction and the stop block and the axial rubber layer are propped in the axial direction, the axial rubber layer can provide axial rigidity for the liquid rubber composite node; by reducing the thickness of the axial rubber layer, the axial stiffness of the liquid rubber composite node can be increased.
An integral liquid rubber composite node with a small axial ratio comprises a core shaft, a rubber body, a vulcanized body outer sleeve, a stop block and an integral outer sleeve, wherein the rubber body is vulcanized between the vulcanized body outer sleeve and the core shaft; the core shaft, the rubber body and the vulcanizing body outer sleeve are enclosed together to form a hydraulic cavity with an opening at the outer side, a stop block is arranged in the hydraulic cavity, the stop block covers the vulcanizing body outer sleeve, and an integral outer sleeve is sleeved outside the stop block and the vulcanizing body outer sleeve; the dabber is opened and is had the pit sunken to the dabber inboard, and the both sides of pit all are provided with the boss, and the backstop piece inboard inlays in the pit of dabber, and when backstop piece and dabber took place axial direction's relative movement, the axial displacement of backstop piece can be blockked to the boss of dabber.
Preferably, the inner side of the boss of the mandrel is provided with an inner blocking surface, the outer side of the boss is provided with an outer inclined surface, and the inner side of the outer sleeve of the vulcanizing body is provided with a spacer inclined surface.
Preferably, the rubber body vulcanized on the inner side surface of the boss is an axial rubber layer, the rubber body vulcanized between the outer inclined surface of the boss and the spacer inclined surface of the outer sleeve of the vulcanized body is an inclined rubber layer, and the thickness of the inclined rubber layer is greater than that of the axial rubber layer.
Preferably, the rubber body vulcanized at the bottom of the pit of the mandrel is a radial rubber layer; the inclined rubber layer, the axial rubber layer and the radial rubber layer are connected together in a seamless mode to form a rubber body, and a space is reserved between the rubber body and the stop block.
Preferably, the inner side of the oblique rubber layer is provided with an inner groove, the outer side of the oblique rubber layer is provided with an outer groove, and the inner groove and the outer groove are both arc-shaped grooves which are sunken towards the inner side of the oblique rubber layer.
The beneficial technical effects of the invention are as follows:
1. the existing liquid rubber composite node structure is changed, the rubber body is arranged to form a certain inclination angle with the axial direction of the mandrel, namely, the inclined rubber layer adopts an oblique angle design, so that when the inclined rubber layer bears radial pressure, the inclined rubber layer generates shearing and extruding composite deformation, the radial rigidity of the liquid rubber composite node is reduced, the rubber body fatigue resistance is facilitated, and the reliability of the liquid rubber composite node is improved.
2. The rubber body is vulcanized between the vulcanizing body outer sleeve and the core shaft to form a whole body without split, the stop block is covered on the vulcanizing body outer sleeve, and the whole outer sleeve is sleeved on the outer sides of the stop block and the vulcanizing body outer sleeve, so that an integral liquid rubber composite node structure is formed. Compared with the existing split liquid rubber composite node, the integral liquid rubber composite node is superior in the aspects of overall performance stability, reliability, fatigue resistance, sealing performance and the like.
3. The product rubber profile is designed to be of an inwards concave structure, namely, the outer groove and the inner groove of the inclined rubber layer are both inwards concave structures which are sunken towards the inner side of the inclined rubber layer, the inwards concave structures of the inclined rubber layer effectively reduce the radial rigidity of the product, reduce the stress strain of the rubber and improve the fatigue performance of the product. The concave surface design of the hydraulic cavity can also increase the volume of the hydraulic cavity, improve the dynamic rigidity characteristic of a product and ensure the stability and reliability of a vehicle in high-speed operation.
4. The middle section of the mandrel is provided with a structure combining a boss and a pit, the boss is used for improving the axial rigidity, and the pit is designed for reducing the radial rigidity, so that the small-diameter axial ratio is realized.
5. The three-dimensional structure of the inclined rubber layer is similar to a part of a hollow sphere, so that the deflection rigidity can be reduced, the deflection deformation capability can be improved, and the fatigue reliability can be improved.
Drawings
FIG. 1 is a schematic cross-sectional view of the overall structure of the first embodiment;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the carcass sleeve, stopper and monolith sleeve;
FIG. 4 is a schematic cross-sectional structural view of the mandrel;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1;
in the figure: the rubber vulcanization device comprises a mandrel 1, a pit 11, a boss 12, an inner side surface 121, an outer inclined surface 122, a rubber body 2, an inclined rubber layer 21, an inner side groove 211, an outer side groove 212, an axial rubber layer 22, a radial rubber layer 23, a vulcanized body outer sleeve 3, a spacer inclined surface 31, a stop block 4, an integral outer sleeve 5 and a hydraulic cavity 6.
Detailed Description
The invention is further described with reference to the following examples and figures:
example one
As shown in fig. 1, 4 and 5, the integral liquid rubber composite node is formed by vulcanizing a rubber body 2 between a vulcanized body outer sleeve 3 and a mandrel 1, so that the mandrel 1, the rubber body 2 and the vulcanized body outer sleeve 3 form an integral body. And the mandrel 1, the rubber body 2 and the vulcanizing body outer sleeve 3 enclose a hydraulic cavity 6 with an opening at the outer side, a stop block 4 is arranged in the hydraulic cavity 6, and the longitudinal section of the stop block 4 is T-shaped. The upper end of the stop block 4 is covered on the outer sleeve 3 of the vulcanizing body, the hydraulic cavity 6 is sealed into a closed cavity, and liquid can be injected into the closed hydraulic cavity 6, so that a node formed by compounding the liquid and the rubber is formed. The whole outer sleeve 5 is in a hollow round pipe shape, the stop block 4 and the vulcanizing body outer sleeve 3 are arranged in the whole outer sleeve 5 in a pre-compression mode, and the whole outer sleeve 5 restrains and compresses the stop block 4 and the vulcanizing body outer sleeve 3. The shaft is provided with a pit 11 which is sunken towards the inner side of the mandrel 1, the pit 11 is the lower end of the hydraulic cavity 6, and a part of the rubber body 2 is vulcanized in the pit 11. Bosses 12 are arranged on two sides of the concave pit 11, and the inner side of the stop block 4 is embedded in the concave pit 11 of the mandrel 1.
As shown in fig. 1, 2, 3 and 4, the mandrel 1 has an inner stop surface inside the boss 12, an outer inclined surface 122 outside the boss 12, and a spacer inclined surface 31 inside the vulcanized body jacket 3. The rubber body 2 vulcanized on the inner side surface 121 of the boss 12 is an axial rubber layer 22, the rubber body 2 vulcanized between the outer inclined surface 122 of the boss 12 and the spacer inclined surface 31 of the vulcanized body jacket 3 is an inclined rubber layer 21, and the thickness of the inclined rubber layer 21 is greater than that of the axial rubber layer 22. The rubber body 2 vulcanized at the bottom of the pit 11 of the mandrel 1 is a radial rubber layer 23, the inclined rubber layer 21, the axial rubber layer 22 and the radial rubber layer 23 are connected together in a seamless mode to form the rubber body 2, and a space is reserved between the rubber body 2 and the stop block 4.
In this embodiment, an included angle between the spacer inclined plane 31 of the outer jacket 3 of the vulcanized body and the axial direction of the mandrel 1, that is, an inclination angle of the spacer inclined plane 31 is an angle B, and the preferred angle of the angle B is 30 to 60 degrees; the angle between the outer bevel 122 of the boss 12 and the axial direction of the mandrel 1, i.e. the angle of inclination of the outer bevel 122, is angle C, which is also preferably 30-60 degrees. Since the oblique rubber layer 21 is vulcanized between the spacer inclined surface 31 and the outer inclined surface 122, the inclination angle between the spacer inclined surface 31 and the outer inclined surface 122 makes the oblique rubber layer 21 form an inclination angle with the axial direction of the mandrel 1, i.e. the oblique rubber layer 21 adopts an oblique angle design relative to the mandrel 1.
Compared with the mandrel 1, the rubber body 2 of the existing liquid rubber composite node adopts a parallel design, and when the rubber body 2 arranged in parallel bears radial pressure, the rubber body 2 generates extrusion deformation. In order to reduce the radial rigidity of the rubber body 2, the radial thickness of the rubber body 2 needs to be increased, and the radial thickness of the rubber body 2 is difficult to be greatly increased due to the volume of the liquid rubber composite node. This makes it very difficult to further reduce the radial stiffness of the existing liquid rubber composite node structure.
In this embodiment, the oblique rubber layer 21 and the axial direction of the mandrel 1 form a certain inclination angle, so that when the oblique rubber layer 21 bears radial pressure, the oblique rubber layer 21 can generate shearing and extrusion composite deformation. When the rubber generates shear deformation, the rigidity of the rubber is smaller than that of the rubber which generates extrusion deformation. Thus, the bias rubber layer 21 can reduce the radial stiffness of the liquid rubber composite node. When the inclination angles of the angle B and the angle C are increased, the oblique rubber layer 21 is subjected to radial pressure, and the shear deformation of the oblique rubber layer 21 becomes more remarkable. Thus, as the angles B and C described above increase in inclination, that is: the inclination angle of the inclined rubber layer 21 is increased, the radial rigidity of the liquid rubber composite node can be reduced, the fatigue resistance of the rubber body 2 is facilitated, and the reliability of the liquid rubber composite node is improved.
An inner groove is formed on the inner side of the oblique rubber layer 21, an outer groove is formed on the outer side of the oblique rubber layer 21, and the inner groove and the outer groove are both arc-shaped grooves which are sunken towards the inner side of the oblique rubber layer 21. The inner groove and the outer groove formed in the oblique rubber layer 21 reduce the width of the oblique rubber layer 21 in the axial direction, and the radial rigidity of the liquid rubber composite node can be further reduced. And both the inner groove and the outer groove are recessed toward the inner side of the bias rubber layer 21, not protruding toward the outer side of the bias rubber layer 21. Therefore, when the oblique rubber layer 21 is subjected to compression deformation in the radial direction, the oblique rubber layer 21 is not creased, the fatigue resistance of the oblique rubber layer 21 can be improved, and cracking is less likely to occur.
The stop block 4 is embedded in the hydraulic cavity 6, the inner side of the stop block 4 is embedded in the concave pit 11, and the minimum outer diameter of the stop block 4 is smaller than the maximum outer diameter of the boss 12 of the mandrel 1. When the stop block 4 and the mandrel 1 move relatively in the axial direction, the inner side of the stop block 4 is abutted against the outer side of the boss 12, so that the boss 12 of the mandrel 1 can block the axial movement of the stop block 4.
The stopper 4 is pushed in the axial direction, and the stopper 4 is displaced in the axial direction. When there is also a gap between the stopper 4 and the axial rubber layer 22, the axial stiffness of the liquid rubber compound node is mainly provided by the oblique rubber layer 21. When the inclination angle B of the spacer inclined surface 31 and the inclination angle C of the outer inclined surface 122 are increased, the inclined rubber layer 21 receives an axial thrust, and the extrusion deformation of the inclined rubber layer 21 becomes more remarkable. When the rubber generates extrusion deformation, the rigidity of the rubber is larger than that of the rubber generating shear deformation. Therefore, increasing the inclination angle of the oblique rubber layer 21 can increase the axial rigidity of the liquid rubber composite node.
When the stopper 4 is displaced in the axial direction and the stopper 4 is abutted against the axial rubber layer 22, the axial rigidity of the liquid rubber compound node is provided by the oblique rubber layer 21 and the axial rubber layer 22 together. Since the axial thickness of the axial rubber layer 22 is smaller than that of the bias rubber layer 21, and the axial rubber layer 22 is mainly deformed by extrusion to generate axial rigidity. Therefore, the maximum axial rigidity provided by the axial rubber layer 22 is larger than that provided by the oblique rubber layer 21, so that the axial rigidity of the liquid rubber composite node can be greatly improved.
As shown in fig. 1 to 5, the hydraulic chamber 6 is a closed cavity, the hydraulic chamber 6 is filled with liquid, and the recess 11 provided in the mandrel 1 and the inner groove 211 recessed inward in the bevel rubber layer 21 increase the volume of the hydraulic chamber 6. When the vehicle runs at a high speed (high-frequency vibration) in a straight line, the large-volume hydraulic cavity 6 can more effectively provide larger radial rigidity to ensure the running stability and improve the critical speed. When passing a curve (low frequency and large amplitude), the large-volume hydraulic cavity 6 can more effectively provide smaller rigidity performance to ensure the performance of passing the curve, and reduce abrasion. Therefore, the concave pit 11 arranged on the mandrel 1 and the inner side groove 211 arranged on the inclined rubber layer 21 increase the volume of the hydraulic cavity 6, so that more liquid can be contained in the hydraulic cavity 6, the dynamic rigidity characteristic of a product is improved, and the stability and the reliability of a vehicle in turning with a small curvature radius and high-speed running are ensured.
In this embodiment, the radial stiffness of the liquid rubber composite node is reduced by changing the structure of the liquid rubber composite node, and the axial stiffness of the liquid rubber composite node is increased by changing the structure of the liquid rubber composite node, so that the adjustment of the stiffness minor-axis ratio of the liquid rubber composite node is realized.
Obviously, several modifications and variations are possible without departing from the principles of the invention as described.
Claims (10)
1. A small-diameter axial ratio adjusting method of an integral liquid rubber composite node is characterized in that the liquid rubber composite node comprises a core shaft, a rubber body, a vulcanized body outer sleeve, a stop block and an integral outer sleeve; vulcanizing the rubber body between the vulcanizing body outer sleeve and the core shaft to form a whole, and sleeving the stopping block and the vulcanizing body outer sleeve with the whole outer sleeve; when the rubber body bears radial pressure, the rubber body generates shearing and extruding composite deformation, so that the radial rigidity of the liquid rubber composite node is reduced; the concave pit which is concave towards the inner side of the mandrel is formed in the mandrel, bosses are arranged on two sides of the concave pit, the stopping block is arranged at the concave pit, the maximum outer diameter of the boss of the mandrel is set to be larger than the minimum inner diameter of the stopping block, and when the stopping block and the mandrel move in the axial direction relatively, the boss of the mandrel can block the axial movement of the stopping block, so that the axial rigidity of the liquid rubber composite node is increased, and the small diameter-to-axis ratio of the rigidity of the liquid rubber composite node is realized.
2. The method for adjusting the minor-diameter axial ratio of the integral liquid rubber composite node as claimed in claim 1, wherein an outer inclined surface is provided on the outer side of the boss, a spacer inclined surface is provided on the inner side of the vulcanized body sleeve, and the rubber body vulcanized between the outer inclined surface of the boss and the spacer inclined surface of the vulcanized body sleeve is an inclined rubber layer; the shear deformation of the oblique rubber layer is increased when the oblique rubber layer bears radial pressure by increasing the inclination angle of the outer inclined plane of the boss and the inclination angle of the spacer sleeve inclined plane of the outer sleeve of the vulcanized body, so that the radial rigidity of the liquid rubber composite node is reduced.
3. The method for adjusting the minor-axial ratio of the integral liquid rubber composite node as claimed in claim 2, wherein the inner side of the oblique rubber layer is provided with an inner groove recessed towards the inner side of the oblique rubber layer, and the outer side of the oblique rubber layer is provided with an outer groove recessed towards the inner side of the oblique rubber layer, so that the radial rigidity of the liquid rubber composite node can be reduced when the oblique rubber layer bears radial pressure.
4. The method for adjusting the minor-diameter-to-axial ratio of the integral liquid rubber composite node as claimed in claim 2, wherein the axial stiffness of the liquid rubber composite node is increased by increasing the inclination angle of the outer inclined surface of the boss and the inclination angle of the spacer inclined surface of the vulcanized body outer sleeve to increase the extrusion deformation of the inclined rubber layer when the inclined rubber layer bears the axial load.
5. The method for adjusting the minor-diameter-to-axis ratio of the integral liquid rubber composite node as claimed in claim 2, wherein the rubber body vulcanized on the inner side surface of the boss is an axial rubber layer, the axial rubber layer can provide axial rigidity for the liquid rubber composite node when the stop block and the mandrel are relatively moved in the axial direction and the stop block and the axial rubber layer are pushed against each other in the axial direction; by reducing the thickness of the axial rubber layer, the axial rigidity of the liquid rubber composite node is increased.
6. The integral liquid rubber composite node with the small axial ratio is characterized by comprising a mandrel, a rubber body, a vulcanized body outer sleeve, a stop block and an integral outer sleeve, wherein the rubber body is vulcanized between the vulcanized body outer sleeve and the mandrel; the core shaft, the rubber body and the vulcanizing body outer sleeve are enclosed together to form a hydraulic cavity with an opening at the outer side, a stop block is arranged in the hydraulic cavity, the stop block covers the vulcanizing body outer sleeve, and an integral outer sleeve is sleeved outside the stop block and the vulcanizing body outer sleeve; the dabber is opened and is had the pit sunken to the dabber inboard, and the both sides of pit all are provided with the boss, and the backstop piece inboard inlays in the pit of dabber, and when backstop piece and dabber took place axial direction's relative movement, the axial displacement of backstop piece can be blockked to the boss of dabber.
7. The small-diameter-to-axis-ratio integral liquid rubber composite joint as claimed in claim 6, wherein the boss of the mandrel is provided with an inner stop surface on the inner side, the boss is provided with an outer inclined surface on the outer side, and the vulcanized body sleeve is provided with a spacer inclined surface on the inner side.
8. The small-axial-ratio integral liquid rubber composite node as claimed in claim 7, wherein the rubber body vulcanized on the inner side surface of the boss is an axial rubber layer, the rubber body vulcanized between the outer inclined surface of the boss and the inclined surface of the spacer sleeve of the vulcanized body is an inclined rubber layer, and the thickness of the inclined rubber layer is greater than that of the axial rubber layer.
9. The small-diameter-to-axis-ratio integral liquid rubber composite node as claimed in claim 8, wherein the vulcanized rubber body at the bottom of the pit of the mandrel is a radial rubber layer; the inclined rubber layer, the axial rubber layer and the radial rubber layer are connected together in a seamless mode to form a rubber body, and a space is reserved between the rubber body and the stop block.
10. The small-diameter-to-axis-ratio integral liquid rubber composite joint as claimed in claim 9, wherein the oblique rubber layer is provided with an inner groove on the inner side, the oblique rubber layer is provided with an outer groove on the outer side, and the inner groove and the outer groove are both arc-shaped grooves which are recessed towards the inner side of the oblique rubber layer.
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| EP0332901A2 (en) * | 1988-03-15 | 1989-09-20 | Metzeler Gimetall Ag | Elastic and hydraulically damped sleeve |
| US20180156304A1 (en) * | 2016-12-02 | 2018-06-07 | Zhuzhou Times New Material Technology Co., Ltd. | Hydraulic bushing |
| CN108036000A (en) * | 2018-02-08 | 2018-05-15 | 株洲时代新材料科技股份有限公司 | A kind of rubber-metal complex class flexural pivot with axial nonlinear variable-stiffness |
| CN108999884A (en) * | 2018-08-23 | 2018-12-14 | 株洲时代新材料科技股份有限公司 | Variation rigidity flexural pivot and its variation rigidity design method |
| CN110469623A (en) * | 2019-08-30 | 2019-11-19 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node of the liquid rubber composite node of band damping through-hole |
| CN112065909A (en) * | 2020-08-18 | 2020-12-11 | 株洲时代瑞唯减振装备有限公司 | Dynamic stiffness characteristic adjusting method and liquid rubber composite node with auxiliary cavity |
| CN112096776A (en) * | 2020-08-18 | 2020-12-18 | 株洲时代瑞唯减振装备有限公司 | Integral liquid rubber composite node and rigidity adjusting method |
| CN112112923A (en) * | 2020-08-18 | 2020-12-22 | 株洲时代瑞唯减振装备有限公司 | Multistage sealing method for cavity of liquid rubber composite node |
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