CN102644693B - Adjustment method for dynamic stiffness of rubber joint with liquid damping, and rubber joint - Google Patents
Adjustment method for dynamic stiffness of rubber joint with liquid damping, and rubber joint Download PDFInfo
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- CN102644693B CN102644693B CN201210145647.4A CN201210145647A CN102644693B CN 102644693 B CN102644693 B CN 102644693B CN 201210145647 A CN201210145647 A CN 201210145647A CN 102644693 B CN102644693 B CN 102644693B
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- mandrel
- rubber arthrosis
- rubber
- throttling passage
- damping
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Abstract
An adjustment method for the dynamic stiffness of a rubber joint with liquid damping, and the rubber joint, and the rubber joint comprises metal outer sleeves, a rubber joint body, a throttling channel adjustment device and other parts, wherein the specific structure is as follows: proper holes are arranged on the outer surface of the rubber joint body and pressed-installed with the metal outer sleeves on the outer surfaces thereof to form closed cavities, the cavities are arranged in the relative movement directions of the mandrel and the outer sleeve of the rubber joint body, and symmetrically distributed at the both sides of the axis of the rubber joint body, and the two cavities are connected via a throttling channel; and in this way, when the mandrel and the outer sleeve of the rubber joint perform a relative movement, the volume of one side of each of the cavities at the both sides of the mandrel is reduced, and the volume of the other side is increased, so that a liquid damping medium at the side with the reduced volume flows to the side with the increased volume via pores, and the liquid damping medium generates a damping force while passing through the throttling channel due to damping action. The size of the throttling channel can be changed via the adjustment device, so as to achieve the purposes of adjusting the damping force and obtaining the needed dynamic stiffness.
Description
Technical field
The present invention relates to property regulation method and the device of the rubber absorber of a kind of rail vehicle and automobile, is a kind of springrate ratio regulating method and device for rail vehicle and automobile belt liquid damping rubber arthrosis specifically; The method and device, by rubber arthrosis assembly inside, liquid container and adjustable passage being set, change the effect of rubber arthrosis assembly dynamic stiffness to play.
Technical background
Rubber arthrosis is a kind of rubber absorber that is widely used in rail vehicle and automobile, in some cases, require the quiet rigidity of rubber absorber little, dynamic stiffness is large, be that springrate ratio is large, the pivoted arm node that the rail vehicle truck of take is used is example, when bogie moves in straight line section, in order to guarantee operation stability, require pivoted arm node that large location dynamic stiffness can be provided, and when by bend, in order to guarantee the passing ability of bogie, require again rubber arthrosis to have little static stiffness, but the inherent characteristic due to rubber material itself, the springrate ratio that rubber arthrosis can provide does not reach requirement, often need to be by other component to reach usage requirement, make system architecture become complicated.
It is a kind of rubber absorber that is applied to rail vehicle and automobile that carrying liqs damping rubber joint forms, have the advantages that springrate ratio is large, but current product is after entrucking, its properties is fixing, in running, dynamic stiffness is to change along with the variation of running environment, and in actual moving process, by situation under require rubber arthrosis to form will to reduce its dynamic rate in some specific situations, this point is not accomplished in existing carrying liqs damping rubber joint.
Therefore in order to meet the needs of rail vehicle and automobilism, being necessary to develop a kind of sound rigidity can regulate as required, to reach the carrying liqs damping rubber joint of rail vehicle and automobile usage requirement.
Summary of the invention
The object of the invention is to can not change under specific circumstances for existing carrying liqs damping rubber joint the deficiency of its dynamic rate, propose a kind of adjustable carrying liqs damping rubber joint springrate ratio regulating method and device of sound stiffness variation that can make carrying liqs damping rubber joint.
The implementer's case proposing according to the object of invention is: a kind of carrying liqs damping rubber joint dynamic stiffness regulating method and rubber arthrosis, in rubber arthrosis, be provided with plural enclosed cavity, between enclosed cavity and enclosed cavity, by throttling passage, be interconnected, and the controlling device of controlling throttling passage area of passage is set on throttling passage, by the size of controlling device adjusting joint circulation road, to reach the size of damping adjusting power, obtain required rubber arthrosis dynamic stiffness.
Further implementer's case is: described enclosed cavity is, at rubber arthrosis overcoat intermediate portion outer surface, two breach are set, at two breach outer surfaces, be pressed with again metal-coating outside one deck, make outer surface two breach in rubber arthrosis overcoat intermediate portion form the cavity of two sealings, and the cavity of two sealings is arranged in rubber arthrosis mandrel radial motion direction relative to overcoat, between the cavity of two sealings, by throttling passage, be connected, like this when the mandrel of rubber arthrosis and rubber arthrosis overcoat do relative motion, cavity one Side Volume of mandrel both sides reduces, opposite side volume increases, impel the liquid resisting medium of the side that volume reduces to flow to by throttling passage the side that volume increases, liquid resisting medium during by throttling passage due to damping function, produce damping force, and axially have a center hole at rubber arthrosis mandrel core, center hole is through throttling passage, intersect with throttling passage is vertical, the controlling device of adjusting joint circulation road area of passage is installed in center hole, throttling passage can change its size by controlling device, to reach damping adjusting power, obtain required dynamic stiffness.
Further implementer's case is: the cavity of two described sealings is to be symmetrically distributed in rubber arthrosis axis both sides.
The rubber arthrosis of a kind of carrying liqs damping rubber joint stiffness controlling device proposing according to said method, comprises metal-coating, rubber body and mandrel; Rubber arthrosis is enclosed within on mandrel, and metal-coating is enclosed within again in rubber body, is combined to form a kind of rubber arthrosis, it is characterized in that, in rubber arthrosis inside, is provided with a rigidity adjuster; Described rigidity adjuster comprises that plural liquid container, liquid container and liquid container couple together by adjustable passage, in adjustable passage, be provided with throttle regulator, by adjusting joint flow modulation device, can change the throttling size of adjustable passage, realize variable resistance Buddhist nun, thereby reach the object that regulates required rubber arthrosis dynamic stiffness.
The invention has the advantages that: by the liquid damping device that can regulate is set in rubber arthrosis, the inside rigidity of rubber arthrosis is adjusted, realized rubber arthrosis dynamic stiffness adjustable, can meet the service condition of vehicle completely, and simple in structure, easy to adjust, realize easily.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention;
Fig. 2 is rubber arthrosis part-structure schematic diagram in accompanying drawing 1;
Fig. 3 is controlling device core shaft structure schematic diagram in accompanying drawing 1;
Fig. 4 is that accompanying drawing 1 regulates area of passage schematic diagram;
Fig. 5 is the structural representation of another embodiment of the present invention;
Fig. 6 is the structural representation of another embodiment of the present invention;
Fig. 7 is the structural representation of another embodiment of the present invention;
Fig. 8 is the structural representation side view of another embodiment of the present invention;
Fig. 9 is rubber arthrosis part-structure schematic diagram in accompanying drawing 8
Figure 10 is controlling device core shaft structure schematic diagram in accompanying drawing 8.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
By accompanying drawing, can find out and the present invention relates to a kind of carrying liqs damping rubber joint dynamic stiffness regulating method and rubber arthrosis, in rubber arthrosis, be provided with plural enclosed cavity, between enclosed cavity and enclosed cavity, by throttling passage, be interconnected, and the controlling device of controlling throttling passage area of passage is set on throttling passage, by the size of controlling device adjusting joint circulation road, to reach the size of damping adjusting power, obtain required rubber arthrosis dynamic stiffness.
Further implementer's case is: described enclosed cavity is, at rubber arthrosis overcoat intermediate portion outer surface, two breach are set, at two breach outer surfaces, be pressed with again metal-coating outside one deck, make outer surface two breach in rubber arthrosis overcoat intermediate portion form the cavity of two sealings, and the cavity of two sealings is arranged in rubber arthrosis mandrel radial motion direction relative to overcoat, between the cavity of two sealings, by throttling passage, be connected, like this when the mandrel of rubber arthrosis and rubber arthrosis overcoat do relative motion, cavity one Side Volume of mandrel both sides reduces, opposite side volume increases, impel the liquid resisting medium of the side that volume reduces to flow to by throttling passage the side that volume increases, liquid resisting medium during by throttling passage due to damping function, produce damping force, and axially have a center hole at rubber arthrosis mandrel core, center hole is through throttling passage, intersect with throttling passage is vertical, the controlling device of adjusting joint circulation road area of passage is installed in center hole, throttling passage can change its size by controlling device, to reach damping adjusting power, obtain required dynamic stiffness.
Further implementer's case is: the cavity of two described sealings is to be symmetrically distributed in rubber arthrosis axis both sides.
The rubber arthrosis of a kind of carrying liqs damping rubber joint stiffness controlling device proposing according to said method, comprises metal-coating, rubber body and mandrel; Rubber arthrosis is enclosed within on mandrel, and metal-coating is enclosed within again in rubber body, is combined to form a kind of rubber arthrosis, it is characterized in that, in rubber arthrosis inside, is provided with a rigidity adjuster; Described rigidity adjuster comprises that plural liquid container, liquid container and liquid container couple together by adjustable passage, in adjustable passage, be provided with throttle regulator, by adjusting joint flow modulation device, can change the throttling size of adjustable passage, realize variable resistance Buddhist nun, thereby reach the object that regulates required rubber arthrosis dynamic stiffness.
Embodiment one
Accompanying drawing 1 has provided one embodiment of the present of invention, by accompanying drawing, can find out, a kind of rubber arthrosis assembly that liquid container and adjustable passage are set in inside, comprises rubber arthrosis overcoat 1, mandrel 2, elastic caoutchouc 3; Elastic caoutchouc 3 is enclosed within on mandrel 2; Its feature is: at rubber arthrosis overcoat 1 overcoat, have a metal-coating 4, rubber arthrosis press-fits in metal-coating; On rubber arthrosis overcoat 1, take axis as symmetry axis symmetrical position is provided with plural independent liquid container 5, each independent liquid container 5 is interconnected by the throttling passage 6 being arranged on mandrel, throttling passage adjusting axle 7 is located at mandrel 2 inside of rubber arthrosis, and is fixed by Cock screw 8; Between each several part, by O-ring seals 9, seal with anti-leak.The concrete structure of metal-coating 4 is simple cylindricality tubular, and portion press-fits rubber arthrosis within it.
The concrete structure that accompanying drawing 2 is rubber arthrosis, mainly comprises rubber arthrosis overcoat 1, mandrel 2, elastic caoutchouc 3, has 2 for filling the circular groove 10 of O-ring seals at the surperficial two ends of rubber arthrosis overcoat 1; On rubber arthrosis overcoat 1, the axis of take was provided with two with last independent liquid container 5 as symmetry axis symmetrical position, on mandrel 2, being provided with throttling passage 6 is communicated with independent liquid container 5 each other, throttling passage 6 communicates with mandrel endoporus 11 simultaneously, mandrel endoporus 11 is axial step shape blind hole, hole step 12 is positioned at mandrel endoporus 11 and throttling passage 6 intersections, mandrel endoporus 11 port part have screw thread 14, be used for assembling throttling passage adjusting axle 7, at screw thread, 14 places radially have set screw hole 15, for Cock screw 8 is installed.
Accompanying drawing 3 is the concrete structure of throttling passage adjusting axle 7, being shaped as of adjusting axle 7 is step-like, each several part diameter is identical with corresponding mandrel endoporus 11, its pillow block rank 16 coordinate with the hole step 12 of mandrel endoporus 11, form throttling passage, circular groove 17 is for filling O-ring seals, and outside thread 19 coordinates with the internal thread 14 of endoporus.
Accompanying drawing 4 throttling passages form principle, ring-shaped throttling passage is by the internal surface 20 at hole step 12 places of mandrel endoporus 11, the outer surface 22 at 16 places, pillow block rank of hole end surface 21 and adjusting axle 7, axial end 23 coordinates the annular pass 53 that forms rectangular cross-sections, and the size in this throttling passage cross section is along with adjusting axle 7 axial moving left and right and changing in hole.
working principle:rubber arthrosis assembly in the course of the work, overcoat and mandrel are done radially relative movement, see shown in accompanying drawing 1, resisting medium in the liquid container of a side flows to the liquid container of the side that stretches by compression, its flow path is that independent liquid container 5 flows into lower independent liquid container 24 through throttling passage 6, when resisting medium is flowed through the upper part of throttling passage 6 and lower part 18, because hole is enough large, do not produce effective damping force, damping force mainly produces when flowing through throttling passage 25, and the large I of damping force regulates by the size of adjusting joint circulation road 25.In order to make the product of same model be applicable to different operating modes, the large I of throttling passage 25, by swivel circulation road adjusting axle 7, under screw-thread fit effect, axially moves adjusting axle 7, thereby obtains the throttling passage sectional area of required damping force.
Embodiment two
Embodiment two is throttling passage constituted mode different (as shown in Figure 5) from embodiment one difference, embodiment one throttling passage is formed the passage of a square-section by the step in hole and the step of axle, embodiment two throttling passage is comprised of the gap 26 between the ball-shaped end of core axle hole 28 and the ball-shaped end of adjusting axle 27, the spherical diameter of core axle hole 28 ends is identical with the spherical diameter of adjusting axle 27 ends, by adjusting axle 27, in core axle hole 28, axially move, can make the gap between axle and hole change, reach the object that damping regulates.
Embodiment three
Embodiment three is that with embodiment one difference providing of damping force is not to be provided by throttling passage, but is provided by the restriction of adjusting axle upper channel, and the size of this restriction is adjustable simultaneously.
Accompanying drawing 6 has provided the enforcement figure of another scheme implementation example three of the present invention, and structure and embodiment one are similar, and difference is, adjusting axle 29 is the optical axis in core axle hole, and shaft end is not threaded; 29 of adjusting axles, increased a throttle orifice 30 with it, in the end of adjusting axle 29, increased a spring 31, on mandrel 2, increased a locating stud 32, prevented that adjusting axle from swinging in core axle hole; Throttle orifice 30 on adjusting axle 29 is combined to form restriction with the throttling passage hole 32 on mandrel 2, increases axial stop 54 in the outer end of adjusting axle 29 simultaneously, stops adjusting axle 29 to skid off core axle hole.
Embodiment's three working principles: resisting medium by independent liquid container by the throttling passage 55 on mandrel and 56 and the downward independent liquid container of throttle orifice 30 of adjusting axle 29 itself flow, wherein, by restriction 33 and 34 positions for generation damping force, the size of its damping force is regulated by the size of restriction.The Principles of Regulation of restriction: adjusting axle is pressed on axial stop by spring, make the throttle orifice 30 on adjusting axle by dislocation, form restriction with the throttling passage hole 32 on mandrel 2, axial stop is to be arranged in the tapped hole of 32 ends, throttling passage hole on mandrel 2 by screw thread, therefore restriction can axially move along with the axial motion of axial stop, the size of adjusting joint head piece.Locating stud 32 coordinates with axial groove 35 on restriction adjusting axle, can guarantee the circumferential position of the throttle orifice 30 on adjusting axle.
Embodiment four
Accompanying drawing 7 has provided an alternative embodiment of the invention enforcement figure, by accompanying drawing, can find out, the present invention is a kind of rubber arthrosis assembly that liquid container and adjustable passage are set in inside, comprises rubber arthrosis overcoat 36, mandrel 37, elastic caoutchouc 38; Elastic caoutchouc 38 is enclosed within on mandrel 37; Its feature is: at rubber arthrosis overcoat 38 overcoats, have a metal-coating 39, rubber arthrosis press-fits in metal-coating 39; On rubber arthrosis overcoat 36, take axis as symmetry axis symmetrical position is provided with plural independent liquid container 40, each independent liquid container 40 is interconnected by the throttling passage 41 being arranged on mandrel; Adjusting axle 42 is located at mandrel 37 inside of rubber arthrosis, and adjusting axle 42 two ends are pressed with respectively spring 43, and spring is at one end circumscribed with an adjustable stops 44; Adjustable stops 44 slides in a guide pad 45, and can be under external force along moving axially in the hole of guide pad; Guide pad 45 is fixed in the tapped hole of throttling passage 41 ends on mandrel by screw thread.Between each several part, by O-ring seals, seal with anti-leak.
Accompanying drawing 8 is the side sectional view of accompanying drawing 7.
Accompanying drawing 9, for being the concrete structure of rubber arthrosis, mainly comprises rubber arthrosis overcoat 36, mandrel 37, elastic caoutchouc 38; Elastic caoutchouc 38 is enclosed within on mandrel 37, at the surperficial two ends of rubber arthrosis overcoat 36, have 2 for filling the circular groove 46 of O-ring seals, the axis of take is provided with several liquid container 47 as symmetry axis symmetrical position, on mandrel 37, by perforate, liquid container 47 is communicated with mandrel endoporus 48, mandrel endoporus 48 is axial step shape blind hole, there is screw thread 49 mandrel endoporus 48 ends, for assembling the guide pad of adjustable dog.Open liquid container position, along rubber arthrosis outer surface, having an annular sulculus 50, under the cooperation of metal-coating, forming an annular damp channel.
Accompanying drawing 10 is the concrete structure of embodiment's four adjusting axles, and little step-like in shape two broad in the middle of axle, has O shape seal groove 51 in part broad in the middle, and be provided with oil groove 52.
working principle:rubber arthrosis assembly in the course of the work, overcoat and mandrel are done radially relative movement, resisting medium in the liquid container of a side flows to the liquid container of the side that stretches by compression, in needs dynamic antivibration power, be that dynamic rate is when large, mandrel endoporus 48 and excessively oil groove 52 stagger, resisting medium cannot pass through from here, its flow path can only be for passing through annular sulculus 50, resisting medium produces dynamic antivibration power while flowing through annular sulculus 50, do not needing dynamic antivibration power, it is dynamic rate hour, throttling passage adjusting axle is under the effect of external force, axially move, make mandrel endoporus 48 and cross the oil groove 52 formation passage that aligns, because mandrel endoporus 48 is enough large with the sectional area of crossing oil groove 52, resisting medium thus passage through not producing damping force.After external force disappears, under the effect of spring, dynamic adjustments axle is got back to again initial position, by mandrel endoporus 48 and the passage of crossing oil groove 52, again closes, and realizes thus the automatic adjusting of dynamic antivibration power.
Claims (5)
1. a carrying liqs damping rubber joint dynamic stiffness regulating method, in rubber arthrosis, be provided with plural enclosed cavity, between enclosed cavity and enclosed cavity, by throttling passage, be interconnected, it is characterized in that: the controlling device of controlling throttling passage area of passage is set on throttling passage, by the size of controlling device adjusting joint circulation road, to reach the size of damping adjusting power, obtain required rubber arthrosis dynamic stiffness, at rubber arthrosis mandrel core, axially have a center hole, center hole is through throttling passage, intersect with throttling passage is vertical, the controlling device of adjusting joint circulation road area of passage is installed in center hole, throttling passage can change its size by controlling device, to reach damping adjusting power, obtain required dynamic stiffness, described throttling passage is comprised of the gap between the ball-shaped end of mandrel endoporus and the ball-shaped end of adjusting axle, in mandrel, the spherical diameter of bore ends is identical with the spherical diameter of adjusting axle end, by adjusting axle, in mandrel endoporus, axially move, can make the gap between axle and hole change, reach the object that damping regulates.
2. carrying liqs damping rubber as claimed in claim 1 joint dynamic stiffness regulating method, it is characterized in that: described enclosed cavity is, at rubber arthrosis overcoat intermediate portion outer surface, two breach are set, at two breach outer surfaces, be pressed with again metal-coating outside one deck, make outer surface two breach in rubber arthrosis overcoat intermediate portion form two enclosed cavities, and two enclosed cavities are arranged in rubber arthrosis mandrel radial motion direction relative to overcoat, between two enclosed cavities, by throttling passage, be connected, like this when the mandrel of rubber arthrosis and rubber arthrosis overcoat do relative motion, cavity one Side Volume of mandrel both sides reduces, opposite side volume increases, impel the liquid resisting medium of the side that volume reduces to flow to by throttling passage the side that volume increases, liquid resisting medium during by throttling passage due to damping function, produce damping force.
3. carrying liqs damping rubber as claimed in claim 2 joint dynamic stiffness regulating method, is characterized in that: described enclosed cavity is to be symmetrically distributed in rubber arthrosis axis both sides.
4. a rubber arthrosis for carrying liqs damping rubber joint dynamic stiffness controlling device, comprises rubber arthrosis overcoat, mandrel, elastic caoutchouc, elastic caoutchouc is enclosed within on mandrel, at rubber arthrosis overcoat overcoat, have a metal-coating, rubber arthrosis press-fits in metal-coating, is combined to form a kind of rubber arthrosis, it is characterized in that, in rubber arthrosis inside, is provided with a rigidity adjuster, described rigidity adjuster comprises that plural liquid container, liquid container and liquid container couple together by throttling passage, in throttling passage, be provided with throttle regulator, by adjusting joint flow modulation device, change the throttling size of throttling passage, realize variable resistance Buddhist nun, thereby reach the object that regulates required rubber arthrosis dynamic stiffness, at rubber arthrosis mandrel core, axially have a center hole, center hole is through throttling passage, intersect with throttling passage is vertical, the controlling device of adjusting joint circulation road area of passage is installed in center hole, throttling passage can change its size by controlling device, to reach damping adjusting power, obtain required dynamic stiffness, described throttling passage is comprised of the gap between the ball-shaped end of mandrel endoporus and the ball-shaped end of adjusting axle, in mandrel, the spherical diameter of bore ends is identical with the spherical diameter of adjusting axle end, by adjusting axle, in mandrel endoporus, axially move, can make the gap between axle and hole change, reach the object that damping regulates.
5. rubber arthrosis as claimed in claim 4, is characterized in that, is opening liquid container position, along rubber arthrosis outer surface, has an annular sulculus, under the cooperation of metal-coating, forms an annular damp channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210145647.4A CN102644693B (en) | 2012-05-11 | 2012-05-11 | Adjustment method for dynamic stiffness of rubber joint with liquid damping, and rubber joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210145647.4A CN102644693B (en) | 2012-05-11 | 2012-05-11 | Adjustment method for dynamic stiffness of rubber joint with liquid damping, and rubber joint |
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| CN102644693A CN102644693A (en) | 2012-08-22 |
| CN102644693B true CN102644693B (en) | 2014-10-22 |
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| CN201210145647.4A Active CN102644693B (en) | 2012-05-11 | 2012-05-11 | Adjustment method for dynamic stiffness of rubber joint with liquid damping, and rubber joint |
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| CN103925326A (en) * | 2013-01-15 | 2014-07-16 | 成业兴 | Piston available for adjusting soft and hard characteristics of damper |
| DE102013013092A1 (en) * | 2013-03-25 | 2014-09-25 | Carl Freudenberg Kg | camp |
| CN106347403A (en) * | 2015-07-21 | 2017-01-25 | 上海申通地铁集团有限公司 | Axle box node |
| CN105501242B (en) * | 2015-12-01 | 2018-05-08 | 中车唐山机车车辆有限公司 | Rubber nodal point, power truck and rail vehicle |
| CN105370783B (en) * | 2015-12-01 | 2018-06-26 | 中车唐山机车车辆有限公司 | Resist snakelike damper, non-powered bogie and rail vehicle |
| CN108116440A (en) * | 2016-11-28 | 2018-06-05 | 中车大同电力机车有限公司 | A kind of hydraulic device of controlled elasticity connection stiffness |
| CN108116439A (en) * | 2016-11-28 | 2018-06-05 | 中车大同电力机车有限公司 | A kind of hydraulic device of controlled elasticity connection stiffness |
| CN108343700B (en) * | 2017-01-23 | 2020-09-22 | 株洲时代瑞唯减振装备有限公司 | Hydraulic bushing |
| CN109094579B (en) * | 2018-10-08 | 2020-12-15 | 株洲时代瑞唯减振装备有限公司 | Method for hanging motor through axial precompression combined elastic element |
| CN110397700A (en) * | 2019-08-30 | 2019-11-01 | 株洲时代新材料科技股份有限公司 | The method and cavity structure of liquid cavity are formed by adding spacer sleeve in fFour piece type |
| CN110469623B (en) * | 2019-08-30 | 2021-10-26 | 株洲时代瑞唯减振装备有限公司 | Forming method of liquid rubber composite node with damping through hole and node |
| CN110388401A (en) | 2019-08-30 | 2019-10-29 | 株洲时代新材料科技股份有限公司 | A kind of forming method and node with tube body runner liquid rubber composite node |
| CN110425248B (en) * | 2019-08-30 | 2021-10-26 | 株洲时代瑞唯减振装备有限公司 | Forming method of liquid rubber composite node with internal groove runner and node |
| CN112065908B (en) * | 2020-08-24 | 2022-03-18 | 株洲时代瑞唯减振装备有限公司 | Self-locking anti-loosening sealing method of sealing bolt and self-locking anti-loosening sealing bolt |
| CN113815668B (en) * | 2021-09-26 | 2022-09-27 | 中车唐山机车车辆有限公司 | Bogie axle box rubber damping spring and bogie |
| CN114251409A (en) * | 2021-12-01 | 2022-03-29 | 株洲时代新材料科技股份有限公司 | Saddle-shaped rubber hydraulic composite node and assembling method thereof |
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