CN113503309B - Method for reducing deflection torsional rigidity of multilayer rod end spherical hinge and multilayer rod end spherical hinge - Google Patents
Method for reducing deflection torsional rigidity of multilayer rod end spherical hinge and multilayer rod end spherical hinge Download PDFInfo
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- CN113503309B CN113503309B CN202110789937.1A CN202110789937A CN113503309B CN 113503309 B CN113503309 B CN 113503309B CN 202110789937 A CN202110789937 A CN 202110789937A CN 113503309 B CN113503309 B CN 113503309B
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 125000006850 spacer group Chemical group 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims description 53
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004073 vulcanization Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004636 vulcanized rubber Substances 0.000 description 2
- 238000005096 rolling process 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/12—Pivotal connections incorporating flexible connections, e.g. leaf springs
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0614—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part of the joint being open on two sides
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0661—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the two co-operative parts each having both convex and concave interfaces
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0685—Manufacture of ball-joints and parts thereof, e.g. assembly of ball-joints
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0695—Mounting of ball-joints, e.g. fixing them to a connecting rod
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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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Springs (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
The invention relates to the field of elastic rubber part shock absorption, in particular to a method for reducing the partial torsional rigidity of a multilayer rod end spherical hinge. According to the scheme, the plurality of long and narrow small grooves are formed in the groove bottom of the groove, rubber is vulcanized in the small grooves, and the bonding area between the outermost spacer bush and the outer sleeve can be increased through the groove and the small grooves so as to prevent the outermost rubber from being stripped from the outer sleeve and the outermost spacer bush when the ball hinge bears large deflection load. The invention also provides a structure for reducing the deflection torsional rigidity of the spherical hinge at the end of the multilayer rod.
Description
Technical Field
The invention relates to the technical field of elastic rubber part damping, in particular to a method for reducing deflection torsional rigidity of a multilayer rod end spherical hinge and the multilayer rod end spherical hinge.
Background
The rod end spherical hinge is an important damping connecting element, is mainly used on trains, high-speed rails, automobiles, ships or airplanes, and bears the deflection angle and the radial load through the deformation of the rod end spherical hinge when a machine body bears the complex load working conditions of radial load, torsion load, deflection load and the like, so that the machine body is prevented from rolling over during operation. In order to increase the radial rigidity of the rubber body and enable the machine body to bear larger radial load, under many working conditions, the spacer bush is added in the rubber layer and divides the rubber layer into a plurality of layers, and in the high-speed operation process of the machine body, in order to improve the safety and the comfort of the machine body, a multi-layer rod end spherical hinge which can provide large deflection freedom degree, namely small deflection rigidity is needed.
Disclosure of Invention
The invention aims to provide a method for reducing the partial torsional rigidity of a multi-layer rod end spherical hinge, which reduces the partial torsional rigidity of the rod end spherical hinge by increasing the rubber stress release range between an outermost spacer bush and an outer sleeve on the inner peripheral surface of the outer sleeve. The invention also provides a multilayer rod end spherical hinge for reducing the partial torsional rigidity.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for reducing the partial torsional rigidity of a multi-layer rod end spherical hinge is characterized in that a groove is formed in the inner side of the inner peripheral surface of an outer sleeve, rubber is vulcanized in the groove, and the partial torsional rigidity of the rod end spherical hinge is reduced by increasing the rubber stress release range between an outermost spacer bush and the outer sleeve on the inner peripheral surface of the outer sleeve.
Preferably, a reinforcing block is additionally arranged on the outer peripheral surface of the outer sleeve, and the groove and the reinforcing block are oppositely arranged on the inner side and the outer side of the outer sleeve in the circumferential direction; the grooves and the main bearing direction of the rod end spherical hinge are arranged in a staggered mode.
Preferably, the groove is a curved surface groove, and the size of the opening of the curved surface groove is larger than the size of the bottom of the curved surface groove.
Preferably, a plurality of long and narrow small grooves are formed in the bottom of the curved groove, rubber is vulcanized in the small grooves, and the bonding area between the outermost spacer bush and the outer sleeve is increased through the curved groove and the small grooves so as to prevent the outermost rubber from being stripped from the outer sleeve and the outermost spacer bush when the spherical hinge bears a large deflection load.
Preferably, the cross section of the inner circumferential surface of the arc-shaped outer sleeve between the two end surfaces of the outer sleeve, namely the inner side surface of the arc-shaped outer sleeve is arranged at the position close to the end surface of the outer sleeve to be a horizontal straight surface parallel to the horizontal central axis S of the mandrel, an inclined straight surface outwards inclined from the outer end part of the horizontal straight surface to the outer side surface of the outer sleeve is arranged between the horizontal straight surface and the end surface of the outer sleeve, the outer side surface of the outer sleeve is the cross section of the outer circumferential surface of the arc-shaped outer sleeve between the two end surfaces of the outer sleeve, so that the sizes of openings at the end parts of the outer sleeve and the end part of the outermost spacer sleeve are increased, the stress release space of the rubber layers at the end parts of the outer sleeve and the end part of the outermost spacer sleeve when the spherical hinge bears large deflection load, and the deflection torsional rigidity is reduced.
Preferably, the width M of the outermost spacer is set to be greater than the width N of the outer jacket to enhance the radial stiffness of the ball joint at the outermost rubber while reducing the yaw stiffness.
Preferably, the end face rubber bag is vulcanized on the outer side of the end face of the outer sleeve, and the end face rubber bag is wrapped below the middle part of the end face of the outer sleeve; the rubber profile I connected with the end face of the outer sleeve is arranged into a cambered surface, the rubber profile II of the end face rubber bag far away from the end face of the outer sleeve is arranged into a straight surface perpendicular to the horizontal central axis S of the mandrel, and the lower end of the rubber profile I is connected with the upper end of the rubber profile II.
A multilayer rod end spherical hinge for reducing deflection torsional rigidity comprises an outer sleeve, a mandrel and a rubber layer positioned between the outer sleeve and the mandrel, wherein a plurality of layers of spacer bushes are arranged in the rubber layer, and one layer of spacer bush adjacent to the outer sleeve is an outermost layer of spacer bush; the outer sleeve comprises an outer sleeve peripheral surface and an outer sleeve inner peripheral surface, and the outer sleeve inner peripheral surface and the outer sleeve peripheral surface are inner and outer circumferential surfaces in the circumferential direction of the outer sleeve respectively; the outer peripheral surface of the outer sleeve and the inner peripheral surface of the outer sleeve are connected by two outer sleeve end surfaces, and the sections of the outer peripheral surface of the outer sleeve and the inner peripheral surface of the outer sleeve between the two outer sleeve end surfaces are arc-shaped surfaces which are respectively an arc-shaped inner side surface of the outer sleeve and an outer side surface of the outer sleeve; the arc-shaped inner side surface of the outer sleeve is a horizontal straight surface which is parallel to the horizontal central axis S of the mandrel at the position close to the end surface of the outer sleeve, and the horizontal straight surface is connected through an inclined straight surface which inclines outwards from the end part of the horizontal straight surface to the outer side surface of the outer sleeve.
Preferably, the outer side of the end face of the outer sleeve is vulcanized with an end face rubber bag wrapped below the middle part of the end face of the outer sleeve, the joint of the end face rubber bag and the end face of the outer sleeve is a first rubber profile of the cambered surface profile, a second rubber profile of the end face rubber bag, which is far away from the end face of the outer sleeve, is a second rubber profile, the second rubber profile is a straight surface perpendicular to the horizontal central axis S of the mandrel, and the lower end of the first rubber profile is connected with the upper end of the second rubber profile.
Preferably, the inner side of the inner peripheral surface of the outer sleeve is provided with a curved surface groove, the opening size of the curved surface groove is larger than the size of the bottom of the curved surface groove, the bottom of the curved surface groove is provided with a plurality of elongated small grooves, the outer peripheral surface of the outer sleeve is provided with a reinforcing block, and the grooves and the reinforcing block are oppositely arranged on the inner side and the outer side of the outer sleeve in the circumferential direction.
The invention has the technical effects that:
1. the invention arranges a curved surface groove on the inner peripheral surface of the outer sleeve of the multi-layer rod end spherical hinge, and arranges a plurality of long and narrow grooves in the curved surface groove, and vulcanizes rubber in the curved surface groove and the long and narrow grooves, thereby increasing the rubber stress release range between the outermost spacer bush and the outer sleeve on the inner peripheral surface of the outer sleeve to reduce the deflection torsion rigidity of the rod end spherical hinge, and simultaneously increasing the bonding area between the outermost spacer bush and the outer sleeve through the curved surface groove and the long and narrow grooves to prevent the outermost rubber from being stripped from the outer sleeve and the outermost spacer bush when the spherical hinge bears large deflection load.
2. The reinforcing block is additionally arranged on the outer peripheral surface of the outer sleeve, the groove and the main bearing direction of the rod end spherical hinge are arranged in a staggered mode, and the radial rigidity of the rod end spherical hinge can be guaranteed while the deflection torsional rigidity of the rod end spherical hinge is reduced.
3. According to the invention, by increasing the sizes of the openings at the end parts of the outer sleeve and the outermost spacer bush, the stress release space of the rubber layers at the openings at the end parts of the outer sleeve and the outermost spacer bush can be increased when the rod end spherical hinge bears a large unbalanced torsional load, and the unbalanced torsional rigidity is reduced.
4. And an end face rubber bag wrapped below the middle part of the end face of the outer sleeve is vulcanized on the outer side of the end face of the outer sleeve, so that the deflection torsional rigidity of the rod end is reduced, and the radial rigidity of the spherical hinge of the rod end is improved.
Drawings
Fig. 1 is a schematic view of an overall structure of a rod end ball joint according to an embodiment.
Fig. 2 is a schematic perspective view of a ball hinge housing at a rod end according to an embodiment of the invention.
FIG. 3 is a front view of the rod end ball hinge housing of one embodiment.
Fig. 4 is a sectional view taken in the direction B-B in fig. 3.
Fig. 5 is a partial enlarged view of fig. 1 at D.
Fig. 6 is a partially enlarged view of a portion a in fig. 1.
FIG. 7 is a front view of the ball pivot housing of the rod end of the second embodiment.
The reference numerals include: 1. a jacket; 2. an outermost spacer sleeve; 3. a mandrel; 4. an outermost rubber layer; 5. the outer peripheral surface of the outer sleeve; 6. the inner peripheral surface of the outer sleeve; 7. the outer side surface of the outer sleeve; 8. the inner side surface of the outer sleeve; 9. the end surface of the outer sleeve; 10. a horizontal straight surface; 11. an oblique straight surface; 12. a first rubber molded surface; 13. a rubber molded surface II; 14. an end face rubber bag; 15. a groove; 16. a small groove; 17. a reinforcing block; 18. a threaded handle.
Detailed Description
The invention is described in further detail below with reference to figures 1-7.
Example one
In this embodiment, as shown in fig. 1 to 6, a method for reducing the biased torsional stiffness of a multilayer rod end spherical hinge is disclosed, where as shown in fig. 1, the rod end spherical hinge includes an outer sleeve 1, a mandrel 3, and a rubber layer, and a threaded handle 18 is disposed on the outer sleeve 1, so as to facilitate use and operation of the rod end spherical hinge; the rubber layer is positioned between the outer sleeve 1 and the mandrel 3, a plurality of layers of spacer bushes are arranged in the rubber layer, the rubber layer is divided into a plurality of layers by the plurality of layers of spacer bushes, one layer of spacer bush adjacent to the outer sleeve 1 is an outermost layer spacer bush 2, and the rubber layer between the outermost layer spacer bush 2 and the outer sleeve 1 is an outermost layer rubber 4; as shown in fig. 2, the outer sleeve 1 includes an outer sleeve peripheral surface 5 and an outer sleeve inner peripheral surface 6, a groove 15 is formed inside the outer sleeve peripheral surface 6, vulcanized rubber is disposed in the groove 15, the number of the grooves 15 may be one, or two grooves 15 are symmetrically disposed on two sides of a vertical central axis L of the rod end ball hinge, and the number of the grooves 15 in this embodiment is two. The groove 15 and the vulcanized rubber in the groove 15 can increase the rubber stress release range of the outermost rubber 4 between the outermost spacer bush 2 and the outer sleeve 1 on the inner peripheral surface 6 of the outer sleeve to reduce the partial torsional rigidity of the rod end spherical hinge.
Wherein, add reinforcement piece 17 on overcoat periphery 5, set up recess 15 and reinforcement piece 17 relative in overcoat 1 circumferencial direction's inside and outside both sides, reinforcement piece 17 is totally 2, corresponds relative setting with two recesses 15 respectively. The grooves 15 and the main bearing direction of the rod end spherical hinge are arranged in a staggered mode so as to ensure the radial rigidity of the spherical hinge; the main bearing direction of the spherical hinge is the direction shown by the vertical middle axis L of the spherical hinge, and the two grooves 15 are symmetrically arranged on two sides of the vertical middle axis L of the spherical hinge relatively, namely the main bearing direction is staggered, so that the radial rigidity of the spherical hinge is not influenced.
The groove 15 is set to be a curved groove 15, and the opening size of the curved groove 15 is larger than the groove bottom size of the curved groove 15. After the rubber is vulcanized in the groove 15, the size of the opening of the curved surface groove 15 is larger than the size of the bottom of the curved surface groove 15, so that on one hand, the rubber can be prevented from being accumulated and broken in the groove 15 when bearing load, on the other hand, the rubber stress release range of the rubber at the opening of the curved surface groove 15 can be increased when bearing deflection torsion pressure, and the deflection torsion rigidity is reduced. And the grooves 15 can also increase the bonding area between the outermost rubber 4 between the outermost spacer 2 and the outer sleeve 1 so as to prevent the outermost rubber 4 from being stripped from between the outer sleeve 1 and the outermost spacer 2 when the ball hinge bears large unbalanced torsion load.
As shown in fig. 4 and 6, the cross section of the arc-shaped inner circumferential surface 6 of the outer sleeve between the two end surfaces of the outer sleeve 1, namely the arc-shaped inner side surface 8 of the outer sleeve is arranged to be a horizontal straight surface 10 parallel to the horizontal central axis S of the mandrel 3 at a position close to the end surface 9 of the outer sleeve, an inclined straight surface 11 which is inclined outwards from the outer end part of the horizontal straight surface 10 to the outer side surface of the outer sleeve 1 is arranged between the horizontal straight surface 10 and the end surface 9 of the outer sleeve, and rubber is vulcanized at the inclined straight surface 11, so that the bonding area between the outermost rubber 4 and the outer sleeve 1 can be further increased, and the outermost rubber 4 is prevented from being peeled from the outer sleeve 1 and the outermost spacer 2 in the process of bearing load; the outer side surface 7 of the outer sleeve, namely the section of the arc-shaped outer peripheral surface 5 of the outer sleeve between the two end surfaces of the outer sleeve 1, is specifically as follows: as shown in fig. 2, the outer peripheral surface 5 of the outer sleeve is an arc-shaped surface structure; as shown in fig. 4, the jacket end faces 9 on both end faces of the jacket 1, i.e., on both sides of the jacket outer peripheral surface 5; as shown in fig. 6, the jacket outer side surface 7 is a cross section on the jacket outer peripheral surface 5 formed by a vertical cross section perpendicular to the jacket end surface 9; therefore, the sizes of the openings at the end surfaces of the outer sleeve 9 and the outermost spacer bush 2 are increased, the stress release space of the rubber layers at the openings at the end parts of the outer sleeve and the outermost spacer bush 2 is increased when the spherical hinge bears large unbalanced torsional load, and the unbalanced torsional rigidity is reduced.
Wherein, as shown in fig. 1 and 5, the width M of the outermost spacer 2 is set to be greater than the width N of the outer sleeve 1 to increase the radial rigidity of the ball joint. As shown in fig. 6, the end face rubber packet 14 is vulcanized outside the end face 9 of the outer sleeve, and the end face rubber packet 14 is wrapped below the middle part of the end face 9 of the outer sleeve; if the end face rubber bag completely wraps the end face 9 of the outer sleeve, the outer sleeve 1 cannot be stably positioned in the mold before vulcanization, and the outer sleeve 1 can shake in the mold in the vulcanization process to influence the vulcanization effect and the glue sealing effect; the end face rubber bag 14 can also be wrapped to the middle part of the outer sleeve end face 9 and is preferably wrapped below the middle part of the outer sleeve end face 9, so that the radial rigidity of the spherical hinge can be improved, and the sealing glue cannot be influenced; the rubber profile I12 of the end face rubber packet 14 connected with the end face 9 of the outer sleeve is designed into an arc surface, and compared with a straight surface, the rubber profile I12 is designed into the arc surface, so that the phenomenon that rubber is accumulated at the end face 9 of the outer sleeve to cause folding and breaking when a spherical hinge bears load can be avoided; the rubber molded surface II 13 of the end face rubber packet 14 far away from the end face of the outer sleeve is arranged to be a straight face perpendicular to the horizontal central axis S of the mandrel 3, the lower end of the rubber molded surface I12 is connected with the upper end of the rubber molded surface II 13, and the rubber molded surface II 13 perpendicular to the straight face of the horizontal central axis S of the mandrel 3 can reduce the partial torsional rigidity and meanwhile enhance the radial rigidity of the spherical hinge at the outermost rubber 4.
Example two
As shown in fig. 7, the difference between this embodiment and the first embodiment is that a plurality of elongated small grooves 16 are provided at the bottom of the curved groove 15, rubber is vulcanized in the small grooves 16, and the bonding area between the outermost spacer 2 and the outer jacket 1 is further increased by the curved groove 15 and the small grooves 16 to prevent the outermost rubber 4 from being peeled off from between the outer jacket 1 and the outermost spacer 2 when the ball hinge is subjected to a large unbalanced load.
The invention also provides a multilayer rod end spherical hinge for reducing the deflection torsional rigidity of the multilayer rod end spherical hinge, which comprises an outer sleeve 1, a mandrel 3 and a rubber layer positioned between the outer sleeve 1 and the mandrel 3, wherein a plurality of layers of spacer bushes are arranged in the rubber layer, and one layer of spacer bush adjacent to the outer sleeve 1 is an outermost layer spacer bush 2; the outer sleeve 1 comprises an outer sleeve peripheral surface 5 and an outer sleeve inner peripheral surface 6, and the outer sleeve inner peripheral surface 6 and the outer sleeve peripheral surface 5 are inner and outer circumferential surfaces in the circumferential direction of the outer sleeve 1 respectively; the outer peripheral surface 5 and the inner peripheral surface 6 of the outer sleeve are connected by two outer sleeve end surfaces 9, the sections of the outer peripheral surface 5 and the inner peripheral surface 6 of the outer sleeve between the two outer sleeve end surfaces 9 are arc surfaces which are respectively an arc inner side surface 8 of the outer sleeve and an outer side surface 1 of the outer sleeve; the arc-shaped inner side surface 8 of the outer sleeve is a horizontal straight surface 10 which is parallel to the horizontal central axis S of the mandrel 3 at the position close to the end surface 9 of the outer sleeve, and the horizontal straight surfaces 10 are connected through an inclined straight surface 11 which inclines outwards from the end part of the horizontal straight surface 10 to the outer side surface of the outer sleeve 1. An end face rubber bag 14 wrapped below the middle of the outer sleeve end face 9 is vulcanized on the outer side of the outer sleeve end face 9, a rubber profile I12 of the cambered surface profile is arranged at the joint of the end face rubber bag 14 and the outer sleeve end face 9, a rubber profile II 13 is arranged at the position, far away from the outer sleeve end face 9, of the end face rubber bag 14, the rubber profile II 13 is a straight surface perpendicular to the horizontal central axis S of the mandrel 3, and the lower end of the rubber profile I12 is connected with the upper end of the rubber profile II 13. The inner side of the inner peripheral surface 6 of the outer sleeve is provided with a curved surface groove 15, the opening size of the curved surface groove 15 is larger than the size of the bottom of the curved surface groove 15, the bottom of the curved surface groove 15 is provided with a plurality of elongated small grooves 16, the outer peripheral surface 5 of the outer sleeve is provided with a reinforcing block 17, and the grooves 15 and the reinforcing block 17 are oppositely arranged on the inner side and the outer side of the outer sleeve 1 in the circumferential direction.
The above examples are only illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments of the present invention as required without any inventive contribution thereto after reading the present specification, but all such modifications are intended to be protected by the following claims.
Claims (7)
1. A method for reducing the biased torsional rigidity of a multilayer rod end spherical hinge comprises an outer sleeve (1), a mandrel (3) and a rubber layer positioned between the outer sleeve (1) and the mandrel (3), wherein a plurality of spacer bushes are arranged in the rubber layer, and one layer of spacer bush adjacent to the outer sleeve (1) is an outermost layer spacer bush (2), and is characterized in that a groove (15) is formed in the inner side of the inner peripheral surface (6) of the outer sleeve, rubber is vulcanized in the groove (15), and the biased torsional rigidity of the rod end spherical hinge is reduced by increasing the rubber stress release range between the outermost layer spacer bush (2) and the outer sleeve (1) on the inner peripheral surface (6) of the outer sleeve;
the cross section of an arc-shaped outer sleeve inner peripheral surface (6) between two end surfaces of an outer sleeve (1), namely an arc-shaped outer sleeve inner side surface (8) is arranged to be a horizontal straight surface (10) which is parallel to a horizontal central axis S of a mandrel (3) at a position close to an outer sleeve end surface (9), an inclined straight surface (11) which is inclined outwards from the outer end part of the horizontal straight surface (10) to an outer sleeve outer side surface (7) is arranged between the horizontal straight surface (10) and the outer sleeve end surface (9), and the outer sleeve outer side surface (7), namely the cross section of the arc-shaped outer sleeve outer peripheral surface (5) between the two end surfaces of the outer sleeve (1), so that the sizes of openings at the outer sleeve end part and the outermost spacer sleeve (2) end part are increased, the stress release space of the outer sleeve end part and the rubber layer at the end part opening of the outermost spacer sleeve (2) when a ball hinge bears large eccentric torsion load is increased, and the eccentric torsion rigidity is reduced;
an end face rubber bag (14) is vulcanized on the outer side of the outer sleeve end face (9), and the end face rubber bag (14) is wrapped below the middle part of the outer sleeve end face (9); a rubber profile I (12) connecting the end face rubber bag (14) and the outer sleeve end face (9) is arranged into an arc face, a rubber profile II (13) keeping the end face rubber bag (14) away from the outer sleeve end face (9) is arranged into a straight face perpendicular to a horizontal central axis S of the mandrel (3), and the lower end of the rubber profile I (12) is connected with the upper end of the rubber profile II (13).
2. The method for reducing the eccentric torsional rigidity of the spherical hinge at the end of the multilayer rod according to claim 1, characterized in that a reinforcing block (17) is additionally arranged on the outer peripheral surface (5) of the outer sleeve, and the grooves (15) and the reinforcing block (17) are oppositely arranged at the inner side and the outer side of the outer sleeve (1) in the circumferential direction; the grooves (15) and the main bearing direction of the rod end spherical hinge are arranged in a staggered mode.
3. A method for reducing the off-set torsional stiffness of a spherical hinge at a rod end of a multi-layer rod according to claim 2, wherein the groove (15) is configured as a curved groove (15), and the opening of the curved groove (15) has a size larger than the bottom of the curved groove (15).
4. A method for reducing the off-set torsional stiffness of a ball hinge at a rod end of a multi-layer according to claim 3, characterized in that a plurality of elongated small grooves (16) are formed at the bottom of the curved groove (15), rubber is vulcanized in the plurality of small grooves (16), and the bonding area between the outermost spacer (2) and the outer sleeve (1) is increased by the curved groove (15) and the plurality of small grooves (16) to prevent the outermost rubber (4) from being peeled off from between the outer sleeve (1) and the outermost spacer (2) when the ball hinge is subjected to a large off-set torsional load.
5. A method for reducing the off-set torsional stiffness of a multi-layer rod end ball hinge according to claim 4, characterized in that the width M of the outermost spacer (2) is set to be larger than the width N of the outer sleeve (1) to enhance the radial stiffness of the ball hinge at the outermost rubber (4) while reducing the off-set torsional stiffness.
6. A multilayer rod end spherical hinge for reducing partial torsional rigidity is characterized by comprising an outer sleeve (1), a mandrel (3) and a rubber layer positioned between the outer sleeve (1) and the mandrel (3), wherein a plurality of layers of spacer bushes are arranged in the rubber layer, and one layer of spacer bush adjacent to the outer sleeve (1) is an outermost layer of spacer bush (2); the outer sleeve (1) comprises an outer sleeve peripheral surface (5) and an outer sleeve inner peripheral surface (6), and the outer sleeve inner peripheral surface (6) and the outer sleeve peripheral surface (5) are respectively the inner and outer peripheral surfaces of the outer sleeve (1) in the circumferential direction; the outer peripheral surface (5) and the inner peripheral surface (6) of the outer sleeve are connected by two outer sleeve end surfaces (9), the sections of the outer peripheral surface (5) and the inner peripheral surface (6) of the outer sleeve between the two outer sleeve end surfaces (9) are arc surfaces which are respectively an arc inner side surface (8) and an outer side surface (7) of the outer sleeve; the arc-shaped inner side surface (8) of the outer sleeve is a horizontal straight surface (10) which is parallel to the horizontal central axis S of the mandrel (3) at the position close to the end surface (9) of the outer sleeve, and the horizontal straight surface (10) is connected through an inclined straight surface (11) which inclines outwards from the end part of the horizontal straight surface (10) to the outer side surface (7) of the outer sleeve;
the outer side of the outer sleeve end face (9) is vulcanized with an end face rubber bag (14) wrapped below the middle of the outer sleeve end face (9), the joint of the end face rubber bag (14) and the outer sleeve end face (9) is a rubber profile I (12) of the cambered surface profile, the rubber profile of the position, far away from the outer sleeve end face (9), of the end face rubber bag (14) is a rubber profile II (13), the rubber profile II (13) is a straight surface perpendicular to the horizontal central axis S of the mandrel (3), and the lower end of the rubber profile I (12) is connected with the upper end of the rubber profile II (13).
7. The multi-layer rod end spherical hinge capable of reducing the partial torsional rigidity according to claim 6, wherein a curved groove (15) is formed inside the inner peripheral surface (6) of the outer sleeve, the opening size of the curved groove (15) is larger than the size of the bottom of the curved groove (15), a plurality of elongated small grooves (16) are formed in the bottom of the curved groove (15), a reinforcing block (17) is arranged on the outer peripheral surface (5) of the outer sleeve, and the grooves (15) and the reinforcing block (17) are oppositely arranged on the inner side and the outer side of the outer sleeve (1) in the circumferential direction.
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| CN202110789937.1A CN113503309B (en) | 2021-07-13 | 2021-07-13 | Method for reducing deflection torsional rigidity of multilayer rod end spherical hinge and multilayer rod end spherical hinge |
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| CN114922929A (en) * | 2022-05-06 | 2022-08-19 | 广州市威来材料科技有限公司 | Straight-cylinder-shaped multilayer rubber thin-wall joint, installation assembly and installation method |
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| EP0306027A2 (en) * | 1987-09-04 | 1989-03-08 | Barry Wright Corporation | Laminated bearing |
| US7201367B2 (en) * | 2002-12-12 | 2007-04-10 | Caterpillar Inc | Load-bearing resilient mount |
| CN101435481A (en) * | 2008-12-15 | 2009-05-20 | 株洲时代新材料科技股份有限公司 | Ball hinge series rubber elastic element rigidity-changing method and ball hinge series rubber elastic element |
| CN202274034U (en) * | 2011-09-21 | 2012-06-13 | 浙江吉利汽车研究院有限公司 | Automobile vibration damper |
| CN103244589B (en) * | 2013-05-29 | 2014-11-05 | 株洲时代新材料科技股份有限公司 | Method for controlling inflexion point position and upward trend of stopper stiffness and stopper |
| CN103883612B (en) * | 2014-04-09 | 2017-01-04 | 株洲时代新材料科技股份有限公司 | A kind of deep camber sphere multilamellar split-type rubber-metal joint |
| CN104675896B (en) * | 2015-03-17 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | Volute spring rubber bodies lower surface and the method for preventing fold and cracking |
| CN106032831B (en) * | 2015-03-17 | 2018-07-17 | 株洲时代新材料科技股份有限公司 | A kind of volute spring variation rigidity and the method and product for preventing fold and cracking |
| JP6867138B2 (en) * | 2016-10-31 | 2021-04-28 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Anti-vibration bush |
| CN208764209U (en) * | 2018-09-11 | 2019-04-19 | 南京文斯特新材料有限公司 | A kind of rubber spring for small car single trailing arm rear suspension |
| CN110329300B (en) * | 2019-07-25 | 2020-08-14 | 株洲时代新材料科技股份有限公司 | Shaft box pull rod rubber joint and method for improving fatigue resistance |
| CN211778697U (en) * | 2019-11-11 | 2020-10-27 | 江苏铁科新材料股份有限公司 | Large-load elastic supporting device for fan gear box |
| CN211314835U (en) * | 2019-12-25 | 2020-08-21 | 扬州润发橡塑有限公司 | Anti-fatigue rubber joint |
| CN112158223B (en) * | 2020-10-16 | 2022-07-05 | 株洲时代新材料科技股份有限公司 | Method for preventing inclined rubber pile of locomotive from being torn and rubber pile of locomotive |
| CN112268067B (en) * | 2020-10-16 | 2022-07-01 | 中国直升机设计研究所 | Elastic rod end bearing of helicopter rotor damper |
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