CN115626191A - Radial precompression liquid rubber composite node - Google Patents
Radial precompression liquid rubber composite node Download PDFInfo
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- CN115626191A CN115626191A CN202211254359.2A CN202211254359A CN115626191A CN 115626191 A CN115626191 A CN 115626191A CN 202211254359 A CN202211254359 A CN 202211254359A CN 115626191 A CN115626191 A CN 115626191A
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- 239000007788 liquid Substances 0.000 title claims abstract description 95
- 239000002131 composite material Substances 0.000 title claims abstract description 36
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 238000004073 vulcanization Methods 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000000034 method Methods 0.000 description 30
- 230000008569 process Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 8
- 238000013016 damping Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000003292 glue Substances 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
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/32—Guides, e.g. plates, for axle-boxes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
The invention discloses a radial precompression liquid rubber composite node, which comprises a mandrel, an outer sleeve body positioned at the peripheral position of the mandrel and a rubber body vulcanized between the mandrel and the outer sleeve body, wherein a plurality of openings are formed on the peripheral surface of the outer sleeve body; the grooves are communicated with each other through the liquid flow passage. The radial precompression liquid rubber composite node can utilize the node mounting ring body of the rotating arm to directly contact with the outer sleeve body of the liquid rubber composite node, and the assembly between the node and the rotating arm is completed while a liquid cavity is formed, so that the radial precompression of the node and the connection between the node and the rotating arm component can be simply, conveniently and quickly realized.
Description
Technical Field
The invention relates to a node structure, in particular to a radial precompression liquid rubber composite node.
Background
In recent years, along with the rapid development of economy in China, urban rail transit faces a rapid development opportunity, and in order to solve the problems that the technical standard of a rail transit equipment system in cities in China is not perfect, the function is imperfect, the interfaces are not uniform, the interconnection and intercommunication among lines are realized, resources cannot be shared, the purchasing cost and the operation and maintenance cost are high, the high-quality development of urban rail transit in China is promoted, china starts to develop a series of Chinese standard subway trains, and the following domestic subway vehicles all adopt standard vehicle types.
Among the components of a standard subway train, a bogie is one of the most important components, and a bogie system is used as a core subsystem forming the railway train and plays key roles of bearing and transmitting various loads, damping, buffering, guiding and the like, so that the running safety of the train is directly influenced by whether the bogie system can normally and stably work.
In a bogie system, a node is an important connecting element of a shaft box rotating arm and a framework of a railway vehicle, and the node has important functions of transmitting longitudinal force of traction or braking, ensuring stable running of a train, having good guiding capacity and the like.
Regarding the existing assembly method:
as shown in fig. 1, a node mounting ring body 2 is welded at one end of a rotating arm body 1 of a rotating arm assembly, and in the prior art, a node is pressed into an inner hole of the node mounting ring body 2, so that radial pre-compression of the node and connection between the node and the rotating arm assembly are realized.
The Chinese utility model patent with the authorization notice number of CN 207326344U and the authorization notice date of 2018, 5.8.a discloses a press mounting and dismounting device for a rubber sleeve of a rotating arm node of a train bogie, which comprises a pressure head, a dismounting seat, a top plate, a transverse spring, a supporting block, a top annular electromagnet, a jacking table, a positioning blocking plate, a vertical spring and a bottom electromagnet; the pressure head is coaxially arranged right above the dismounting seat, and the height of the pressure head can be lifted; the jacking table is arranged on one side of the dismounting seat, and the height of the jacking table can be lifted; the center of the dismounting seat is provided with an accommodating cavity which can accommodate a plurality of rotating arm node rubber sleeves; the dismounting seat comprises a top plate and a bottom plate; the top plate is provided with a central through hole communicated with the accommodating cavity, the circumferential outer edge of the top plate is provided with a concentric top annular electromagnet, a plurality of strip-shaped grooves are uniformly distributed in the circumferential direction of the top plate, each strip-shaped groove is arranged in the radial direction of the top plate, and a transverse spring and a supporting block are arranged in each strip-shaped groove; one end of the transverse spring is connected with the top annular electromagnet, the other end of the transverse spring is connected with the supporting block, the supporting block can slide in the strip-shaped groove along with the expansion and contraction of the transverse spring, and the supporting block can be adsorbed with the top annular electromagnet; the bottom plate is coaxially provided with a bottom electromagnet and a vertical spring, the bottom end of the vertical spring is connected with the bottom plate or the bottom electromagnet, and the top end of the vertical spring is fixedly connected with the bottom of the positioning barrier plate; the outer diameter of the positioning blocking plate is smaller than the inner diameter of the knuckle hole of the rotating arm; the positioning blocking plate can be adsorbed with the bottom electromagnet box.
The above patent documents disclose the conventional press-fitting method of the pivot arm node into the pivot arm assembly, but the conventional press-fitting method has the following problems:
1. the press fitting process has multiple steps and is relatively complex, and places needing attention in the press fitting process are more to ensure the quality requirement after press fitting, so that the assembling time is prolonged, and the assembling difficulty is improved;
2. during the process of pressing the node in, the contact part between the node and the rotating arm assembly is easily abraded, thereby reducing the service life of the product.
Regarding the selection of the nodes: compared with the common rubber node, the liquid rubber composite node has certain advantages. The working principle of the liquid rubber composite node is that 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 one cavity in advance. Under the action of load, the volumes of 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. During low-frequency vibration, liquid flows up and down through the channel to play a role in large damping, liquid in a high-frequency section cannot flow in time, the damping value is small, vibration is effectively isolated, dynamic stiffness under high-frequency vibration is basically stable and unchanged, and the function of preventing dynamic hardening is played. The frequency ratio of the system is basically kept unchanged, and a good vibration reduction effect is still achieved. Therefore, in a standard subway train, the radial precompression node can adopt a liquid rubber composite node, and when the liquid rubber composite node runs at a high speed (high-frequency vibration) in a straight line, the liquid rubber composite node provides larger radial rigidity to ensure the running stability and improve the critical speed; when the curve is crossed (low frequency and large amplitude), the smaller rigidity performance is provided, the curve crossing performance is ensured, and the abrasion is reduced.
Therefore, the best improvement is: the liquid rubber composite node is applied to a bogie of a standard subway train and an assembling method between the liquid rubber composite node and a rotating arm is improved to avoid the problems of the existing assembling method described above.
Therefore, the applicant designs a new assembly method to solve the technical problems existing in the assembly method, but with the change of the assembly method, the structure of the liquid rubber composite node needs to be changed, otherwise the expected effect cannot be achieved.
In conclusion, how to design a radial precompression liquid rubber composite node, it is the technical problem that needs to solve to make it can be simple and fast realize being connected between node and the pivot subassembly after the assembly is accomplished.
Disclosure of Invention
The invention aims to solve the technical problem of providing a radial precompression liquid rubber composite node aiming at the defects in the prior art, and the connection between the node and a rotating arm component can be simply, conveniently and quickly realized after the assembly is finished.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a radial precompression liquid rubber composite node, includes the dabber and is located the outer cover of dabber peripheral position and vulcanizes rubber body between dabber and the outer cover, at the spindle still be provided with liquid runner and with the notes liquid hole that liquid runner is linked together opens on the global of the outer cover has a plurality of openings, and after the vulcanization, rubber body parcel is in form a plurality of recesses of mutual independence in a plurality of openings, the notch of recess can be blocked up by the node mounting ring body of rocking arm and form the liquid cavity, passes through between a plurality of recesses liquid runner is linked together.
Preferably, the axial section of the outer sleeve is saddle-shaped and axially symmetrical about the outer sleeve, the outer sleeve with the saddle-shaped axial section comprises a middle cylinder and end cones arranged at two end positions of the middle cylinder, the small ends of the end cones are connected with the middle cylinder, and the plurality of openings are formed in the middle cylinder.
Preferably, an included angle between the conical surface of the end cone and the vertical line is set as an angle θ, and a value range of the angle θ is as follows: theta is more than or equal to 15 degrees and less than or equal to 20 degrees.
Preferably, the rubber body is located at an opening of the middle cylinder of the outer sleeve body, wraps and extends from the opening to the outer peripheral surface of the middle cylinder, and a plurality of rubber bulges are formed on the outer peripheral surface of the middle cylinder.
Preferably, a cover plate used for sealing the notch of the groove is arranged at the opening of the outer sleeve body.
Preferably, a raised stop block is further provided on the inner surface of the cover plate.
Preferably, a first rubber wrapping layer is arranged at the end part of the large end of the end cone of the outer sleeve body, and the first rubber wrapping layer and the rubber body are of an integral structure.
Preferably, the mandrel comprises a shaft body and a shaft body flange arranged on the outer peripheral surface of the shaft body, a vulcanization groove is formed in the peripheral surface of the shaft body flange along the circumferential direction of the shaft body, and the rubber body is vulcanized and bonded in the vulcanization groove; and a second rubber wrapping layer is arranged at the end part of the groove edge of the vulcanization groove, and the second rubber wrapping layer and the rubber body are of an integral structure.
The invention has the beneficial effects that: the node structure can utilize the node mounting ring body of the rotating arm to directly contact with the outer sleeve body of the liquid rubber composite node in the assembling process, and the assembling between the node and the rotating arm is completed while a liquid cavity is formed, so that the connection between the node and the rotating arm component can be simply, conveniently and quickly realized. The outer sleeve body is designed into a saddle shape, so that the requirement of a small radial-axial ratio can be met. The axial section of the node mounting ring body is designed into a saddle shape matched with the axial section, so that the node mounting ring body can be better contacted and clamped with an outer sleeve body, the sealing of a liquid cavity is realized, and the radial pre-shrinkage of the node is realized. By forming a plurality of rubber projections on the outer peripheral surface of the intermediate cylinder, the liquid can be further prevented from flowing out of the liquid cavity, increasing the sealing performance at this point. Through set up rubber parcel layer one and set up rubber parcel layer two on the groove limit tip of vulcanizing the recess on the big head end tip of tip cone, can prevent to appear rubber in the operation process and open gluey (bonding inefficacy) phenomenon, guarantee good application effect. The sealing performance of the groove can be further improved by additionally arranging the cover plate on the notch of the groove.
Drawings
FIG. 1 is a schematic view of a partial front view of a transfer arm in the prior art;
FIG. 2 is a schematic view showing the first principle of assembling the liquid rubber compound node and the rotating arm by the assembling method of the present invention;
FIG. 3 is a schematic view of the principle structure of assembling the liquid rubber compound node and the rotating arm by the assembling method of the present invention;
FIG. 4 is an axial sectional structural view of a liquid rubber composite node according to a first embodiment of the present invention;
FIG. 5 is a schematic axial cross-sectional view of an outer casing according to a first embodiment of the present invention;
FIG. 6 is a schematic axial sectional view of the liquid rubber composite node and the rotor arm in accordance with the first embodiment of the present invention;
FIG. 7 is an enlarged view of portion A of FIG. 4;
FIG. 8 is an enlarged view of the portion B in FIG. 4;
FIG. 9 is an axial sectional structural view of a liquid rubber composite node in a second embodiment of the present invention;
FIG. 10 is an enlarged view of the portion C of FIG. 9;
in the figure: 1. the hinge comprises a hinge body, a node mounting ring body, a node mounting semi-circular body I, a node mounting semi-circular body II, a connection lug I, a connection lug II, a radial pre-compression node 5, a bolt 6, a core shaft 7, a mandrel 711, a shaft body 712, a shaft flange 713, a vulcanization groove 8, an outer sleeve body 811, a middle cylinder 812, an end cone 9, a rubber body 911, a rubber bulge 912, a rubber wrapping layer I, a rubber wrapping layer II, a rubber wrapping layer I10, an opening I11, an opening II, a groove I12, a groove II 13, a groove II 14, a liquid cavity I15, a liquid cavity II, a liquid channel 16, a liquid injection hole 17, a cover plate 18, a block 181, and a screw 19.
Detailed Description
The technical solution of the present invention is further explained in detail with reference to the accompanying drawings and specific embodiments.
Because the existing press-fitting assembling method has the problems, the applicant changes the existing press-fitting assembling method, and the method comprises the following steps: as shown in fig. 2 and 3, the swivel arm body 1 is horizontally placed, that is, the length direction of the swivel arm body 1 is placed along the horizontal direction X, the joint mounting ring body 2 at the end of the swivel arm body 1 is divided into two joint mounting semi-circular bodies along the vertical direction Y perpendicular to the horizontal direction X, a first joint mounting semi-circular body 211 and a second joint mounting semi-circular body 212 are respectively installed at the joint, connecting lugs are respectively arranged at two corresponding end portions of the two joint mounting semi-circular bodies, and a first connecting lug 3 arranged at two end portions of the first joint mounting semi-circular body 211 and a second connecting lug 4 arranged at two end portions of the second joint mounting semi-circular body 212 are respectively arranged at the two corresponding end portions of the two joint mounting semi-circular bodies; during assembly, the radial precompression node 5 is transversely placed between the first node mounting semi-circular body 211 and the second node mounting semi-circular body 212, the first node mounting semi-circular body 211 and the second node mounting semi-circular body 212 are locked and connected together by penetrating the first connecting lug 3 and the second connecting lug 4 through the bolt 6, so that the radial precompression node 5 is clamped by the first node mounting semi-circular body 211 and the second node mounting semi-circular body 212, and radial precompression and connection with the rotating arm body 1 are realized on the radial precompression node 5. The radial precompression of the precompression node 5 is realized by designing the precompression amount of the node in advance and utilizing the inner diameter R of the node installation ring body 2 to radially compress the node. The assembling method replaces the traditional press fitting assembling method, various problems in the press fitting process step do not need to be considered, the nodes can be conveniently and quickly installed, the radial pre-compression of the nodes is simply and quickly realized, and the connection between the nodes and the rotating arm component is realized, so that the assembling time is shortened, and the assembling difficulty is reduced; in addition, the problem of abrasion between the node and the rotating arm assembly in the press fitting process can be solved, and the service life of the product is prolonged.
After the new assembly method and the type of joint used in the assembly are determined, it is then necessary to modify the structure of the liquid rubber composite joint to better match the assembly method.
The first embodiment is as follows: as shown in fig. 4 and 5, the liquid rubber composite node adopted in this embodiment includes a mandrel 7, an outer sleeve 8 located at an outer peripheral position of the mandrel 7, and a rubber body 9 vulcanized between the mandrel 7 and the outer sleeve 8, wherein a plurality of openings are formed on a peripheral surface of the outer sleeve 8, in this embodiment, the openings are a first opening 10 and a second opening 11, respectively, after vulcanization, the rubber body 9 is wrapped in the plurality of openings to form a plurality of mutually independent grooves, in this embodiment, the grooves are a first groove 12 formed by the rubber body 9 wrapping the first opening 10 and a second groove 13 formed by the rubber body 9 wrapping the second opening 11, respectively, when the liquid rubber composite node is assembled on the node mounting ring 2 at the end of the rotating arm, as shown in fig. 6, the node mounting ring 2 is clamped on the outer sleeve 8 and located at a notch position of the groove to seal the groove, so that a plurality of mutually independent liquid cavities are formed between the plurality of grooves and the node mounting ring 2, and in this embodiment, a first liquid cavity 14 is formed between the first groove 12 and the node mounting ring 2, and a second groove 15 is formed between the node mounting ring 15. The mandrel 7 is further provided with a liquid flow channel 16 and a liquid injection hole 17 communicated with the liquid flow channel 16, and the liquid cavities are communicated with each other through the liquid flow channel 16, in the embodiment, the first liquid cavity 14 is communicated with the second liquid cavity 15 through the liquid flow channel 16. During assembly, the node mounting ring body 2 is clamped on the outer sleeve body 8 of the liquid rubber composite node, so that the liquid rubber composite node forms a liquid cavity, liquid is injected into the liquid cavity through the liquid injection hole 17, and finally the liquid injection hole 17 is sealed. The joint mounting ring body of the rotating arm is directly contacted with the outer sleeve body of the liquid rubber composite joint, so that the joint and the rotating arm are assembled while a liquid cavity is formed, and the radial precompression of the joint and the connection between the joint and the rotating arm component can be simply, conveniently and quickly realized.
As shown in fig. 5, in the liquid rubber composite node in the present embodiment, the axial cross section of the outer casing 8 is designed to be saddle-shaped (i.e., trapezoidal) axially symmetrical with respect to the outer casing, the outer casing 8 with the saddle-shaped axial cross section includes a middle cylinder 811 and end cones 812 disposed at both ends of the middle cylinder 811, a small end of the end cone 812 is connected to the middle cylinder 811, and a plurality of openings are disposed on the middle cylinder 811. Correspondingly, the axial section of the node mounting ring body in contact with the outer sleeve body is also designed into a saddle shape (namely, a trapezoidal shape) which is axially symmetrical about the node mounting ring body, the small head end of the node mounting ring body 2 with the saddle-shaped axial section is in contact with the middle cylinder 811 of the outer sleeve body 8, and the small head end of the node mounting ring body 2 is utilized to seal the notch of the groove to form a liquid cavity. Here, the axial cross section of the outer sleeve 8 is designed to be saddle-shaped, which can achieve the requirement of smaller radial-to-axial ratio. The axial section of the node installation ring body 2 is designed into a saddle shape matched with the axial section, so that the node installation ring body can be better contacted and clamped with an outer sleeve body, the sealing of a liquid cavity is realized, and the radial pre-shrinkage of the node is realized.
An included angle between the conical surface of the end cone 812 and the perpendicular line L is set as a θ angle, and the perpendicular line L is perpendicular to the central axis M of the outer sleeve, so that the value range of the θ angle is as follows: theta is more than or equal to 15 degrees and less than or equal to 20 degrees. By the arrangement, the requirement of smaller axial ratio can be better met.
As shown in fig. 7, the rubber body 9 is located at the opening of the middle cylinder 811 of the outer casing, and the rubber body is wrapped and extended from the opening to the outer circumferential surface of the middle cylinder 811, and a plurality of rubber protrusions 911 are formed on the outer circumferential surface of the middle cylinder 811, as shown in fig. 6, when the small end of the node mounting ring body 2 is in contact with the middle cylinder 811 of the outer casing 8 after assembly, the plurality of rubber protrusions 911 are pressed by the node mounting ring body 2 to deform and seal the opening, so that the liquid can be further prevented from flowing out of the liquid cavity, and the sealing performance is improved.
In addition, in the daily work process, the applicant finds that some places where rubber is vulcanized and bonded with the outer sleeve and the mandrel, particularly the places at the corner of the edge, are easy to have the phenomenon of glue failure, so that the service life of the product is shortened. In view of the above, the applicant has made a further improvement, as shown in fig. 8, at the end of the big end of the end cone 812 of the outer sleeve, a rubber wrapping layer 912 is formed by extending the rubber body 9 from the inside of the end cone 812 to the end of the big end of the end cone 812, and the rubber body forms an effect similar to a flanging bonding process during vulcanization bonding through the rubber wrapping layer 912, so that the bonding effect between the rubber and the outer sleeve is enhanced, the bonding quality between the outer sleeve and the rubber can be ensured, and the product reliability is improved.
As shown in fig. 4, the mandrel 7 includes a shaft body 711 and a shaft body flange 712 provided on an outer peripheral surface of the shaft body 711, a vulcanization groove 713 is formed on a peripheral surface of the shaft body flange 712 along a shaft body circumferential direction, and the rubber body 9 is vulcanization bonded in the vulcanization groove 713. As shown in fig. 8, at the end of the groove edge of the vulcanization groove 713, the rubber body 9 is wrapped and extended from the inside of the vulcanization groove 713 to the end of the groove edge of the vulcanization groove 713 to form a second rubber wrapping layer 913, the second rubber wrapping layer 913 is vulcanized and bonded to the end of the shaft body flange 712, the second rubber wrapping layer 913 enables the rubber body to form an effect similar to a flanging bonding process during vulcanization and bonding, the bonding effect between the rubber and the mandrel is also enhanced, better corrosion resistance can be realized, the phenomenon of rubber separation (bonding failure) in the operation process can be prevented, and a good application effect is ensured.
Example two: as shown in fig. 9, the present embodiment is different from the first embodiment in that: in order to further increase the tightness of the liquid cavity and prevent the liquid from flowing out of the liquid cavity, at the opening of the outer jacket body 8, a cover plate 18 is provided for sealing the notch of the groove.
To further increase the sealing performance, the rubber body 9 is wrapped and extended from the opening to the outer peripheral surface of the middle cylinder 811 and a plurality of rubber protrusions 911 are formed on the outer peripheral surface of the middle cylinder 811, as shown in fig. 10, the cover plate 18 is fastened to the middle cylinder 811 of the outer jacket 8 by screws 19, and the rubber body wrapped on the outer peripheral surface of the middle cylinder 811 and the rubber protrusions 911 are pressed to form a sealing structure.
In this embodiment, before the assembly, need earlier with apron 18 lock on the middle cylinder 811 of the outer cover body 8, utilize apron 18 earlier will the notch of recess seals, forms once sealed, then utilizes node installation ring body 2 to press from both sides tightly on the outer cover body 8 of the compound node of liquid rubber for node installation ring body 2 presss from both sides tight apron 18, forms the secondary and seals, and the rethread annotates liquid hole 17 and pours into liquid cavity into liquid, will annotate liquid hole 17 at last and seal.
As shown in fig. 9, a raised stop 181 is also provided on the inner surface of the cover plate 18 to perform the stop function.
In conclusion, the node structure of the invention can utilize the node mounting ring body of the rotating arm to directly contact with the outer sleeve body of the liquid rubber composite node in the assembling process, and the assembling between the node and the rotating arm is completed while the liquid cavity is formed, so that the connection between the node and the rotating arm component can be simply, conveniently and rapidly realized. The outer sleeve body is designed into a saddle shape, so that the requirement of a small radial-axial ratio can be met. The axial section of the node mounting ring body is designed into a saddle shape matched with the axial section, so that the node mounting ring body can be better contacted and clamped with an outer sleeve body, the sealing of a liquid cavity is realized, and the radial pre-shrinkage of the node is realized. By forming a plurality of rubber projections on the outer peripheral surface of the intermediate cylinder, the liquid can be further prevented from flowing out of the liquid cavity, increasing the sealing performance at this point. Through set up rubber parcel layer one on the stub end tip of tip cone and set up rubber parcel layer two on the groove limit tip of vulcanizing the recess, can prevent to appear rubber in the operation process and open gluey (bonding inefficacy) phenomenon, guarantee good application effect. The sealing performance of the groove can be further improved by additionally arranging the cover plate on the notch of the groove.
The term "plurality" as used in this embodiment means a number of "two or more". The above embodiments are provided for illustrative purposes only and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should fall within the scope of the present invention, and the scope of the present invention should be defined by the claims.
Claims (8)
1. The utility model provides a compound node of radial precompression liquid rubber, includes the dabber and is located the outer casing of dabber peripheral position and vulcanizes the rubber body between dabber and the outer casing, still be provided with liquid runner on the dabber and with the notes liquid hole that liquid runner is linked together, its characterized in that: the peripheral surface of the outer sleeve body is provided with a plurality of openings, after vulcanization, the rubber body is wrapped in a plurality of mutually independent grooves formed in the plurality of openings, the notches of the grooves can be blocked by the node mounting ring body of the rotating arm to form a liquid cavity, and the grooves are communicated with each other through the liquid flow channel.
2. A radial precompression liquid rubber composite node as claimed in claim 1, wherein: the axial section of the outer sleeve body is in a saddle shape which is axially symmetrical about the outer sleeve body, the outer sleeve body with the saddle-shaped axial section comprises a middle cylinder and end cones arranged at two end positions of the middle cylinder, the small ends of the end cones are connected with the middle cylinder, and a plurality of openings are formed in the middle cylinder.
3. A radially precompressed liquid rubber composite node according to claim 2, wherein: an included angle between the conical surface of the end cone and the vertical line is set as an angle theta, and the value range of the angle theta is as follows: theta is more than or equal to 15 degrees and less than or equal to 20 degrees.
4. A radial precompression liquid rubber composite node as claimed in claim 2, wherein: the rubber body is positioned at the opening of the middle cylinder of the outer sleeve body, wraps and extends to the peripheral surface of the middle cylinder from the opening and forms a plurality of rubber bulges on the peripheral surface of the middle cylinder.
5. A radially precompressed liquid rubber composite node according to claim 2, wherein: and a cover plate used for sealing the notch of the groove is arranged at the opening of the outer sleeve body.
6. A radially precompressed liquid rubber composite node according to claim 5, wherein: the inner surface of the cover plate is also provided with a raised stop block.
7. A radially precompressed liquid rubber composite node according to any of claims 2 to 6, wherein: the rubber wrapping layer I is arranged at the large end part of the end cone of the outer sleeve body, and the rubber wrapping layer I and the rubber body are of an integral structure.
8. A radially precompressed liquid rubber composite node according to any of claims 2 to 6, wherein: the core shaft comprises a shaft body and a shaft body flange arranged on the peripheral surface of the shaft body, a vulcanization groove is formed in the peripheral surface of the shaft body flange along the circumferential direction of the shaft body, and the rubber body is vulcanized and bonded in the vulcanization groove; and a second rubber wrapping layer is arranged at the end part of the groove edge of the vulcanization groove, and the second rubber wrapping layer and the rubber body are of an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211254359.2A CN115626191A (en) | 2022-10-13 | 2022-10-13 | Radial precompression liquid rubber composite node |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211254359.2A CN115626191A (en) | 2022-10-13 | 2022-10-13 | Radial precompression liquid rubber composite node |
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| CN115626191A true CN115626191A (en) | 2023-01-20 |
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| CN202211254359.2A Pending CN115626191A (en) | 2022-10-13 | 2022-10-13 | Radial precompression liquid rubber composite node |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| 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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