CN108045395B - A kind of overload protection method and pivoted arm node of pivoted arm panel load - Google Patents
A kind of overload protection method and pivoted arm node of pivoted arm panel load Download PDFInfo
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- CN108045395B CN108045395B CN201711440779.9A CN201711440779A CN108045395B CN 108045395 B CN108045395 B CN 108045395B CN 201711440779 A CN201711440779 A CN 201711440779A CN 108045395 B CN108045395 B CN 108045395B
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- pivoted arm
- mandrel
- arm node
- face
- vulcanization
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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
- B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
Abstract
A kind of method and pivoted arm node of the protection of pivoted arm node overload; according to pivoted arm node present position; pivoted arm node is divided into two vulcanization bodies and mandrel is pressed fabricated structure; two of them vulcanize the mutual on the mandrel of body, and the end face that is connected of two housings is the step structure that three-stage convex-concave rim of the mouth matches；Wherein the external set of a vulcanization is female structure; another external set of vulcanization is outer male structure; together by the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference; realize that pivoted arm node vulcanizes the precommpression of body rubber body by the relative position of housing and inner sleeve; radial limiting device is set in pivoted arm node; the overload in pivoted arm node operational process is prevented by radial limiting device, plays overload protective function.Itself setting overload protection arrangement in pivoted arm node, the contact by pivoted arm node housing with mandrel is formed protects rubber bodies not to be damaged the overload protection of vulcanization body rubber body when pivoted arm node is radially absorbed impact or overloaded to adapt to load change.
Description
Technical field
The present invention relates to a kind of method and device for overload protection of the system unit of vehicle, and in particular to arrives a kind of high speed
The pivoted arm node overload guard method of EMU and device are mainly used for the bogie primary vibration damping system of China's standard EMU
System.Belong to rail traffic vehicles critical component manufacturing technology field.
Background technique
In order to really form our the autonomous unified high-speed rail standard techniques of country, China started just to propose to want in 2012
Establish the standard EMU of China.So-called Chinese Industrial Standards (CIS) EMU: it referred to as marks and moves, refer to that Chinese Industrial Standards (CIS) system is occupied an leading position
EMU (in 254 major criterions, 84%) various Chinese Industrial Standards (CIS)s account for, the construction reference of profile and mating track
All it is higher than European standard and Nippon Standard, there is distinct and comprehensive Chinese feature；This also refers in the environment for facing diversification CRH
In (including the four big CRH6 for introducing types and Chinese autonomous Design), to Chinese EMU carry out standardization it is (unitized) design with
It interconnects.This novel EMU newly developed increases compatibility, large quantities of features such as do not derail again, thus form it is distinct and
Comprehensive China's feature represents the advanced standard body of current world's EMU technology by using names EMU Chinese Industrial Standards (CIS) (China marks)
System.
The main purpose for developing Chinese Industrial Standards (CIS) EMU is:
1, the needs of scientific research and innovation, research of technique.The scientific research and research of technique for reinforcing high-speed railway key technology, make
Chinese high-speed rail technology keeps world lead level.
2, it seeks unity of standard, reduces the needs of cost.For the EMU of different model, unified technical standard body is established
System, realize EMU in service function, with the unification in maintenance, improve efficiency, reduce cost.
In order to adapt to the requirement of Chinese Industrial Standards (CIS) EMU, to being permitted including bogie and bogie integral vibration damping system
More important component requires to re-start design and research；Wherein, being installed on one is to connect among pivoted arm for pivoted arm positioning flexible
It connects, the pivoted arm node for transmitting longitudinal force is exactly one of them.Pivoted arm node is also referred to as axle box guidance joint, is train A class key portion
Part, performance directly affect vehicle movement stability, and pivoted arm node is because of longitudinal rigidity and deflection stiffness is excessive easilys lead to vehicle
Wheel is to, bearing and train line rail abrasion.According to the position of journal box spring, swing arm type positioning can be divided into axis top bullet again
Spring formula positions two kinds with spring is ridden on.What standard motor train unit bogie used is exactly the positioning of axis top spring, the journal box spring
For seat at the top of axle box, center line and wheel in one plane, play main vertical carrying to center line.Pivoted arm section
For point when to be installed on one be among pivoted arm, positioning arm one end and columnar axle box are affixed, and the other end passes through caoutchouc elasticity system
The pivoted arm node of work is connected with the mounting base of weldering architecturally.Pivoted arm node allows axle box to have biggish vertical position with respect to framework
It moves, but the rubber in pivoted arm node can be supplied to the different horizontal and vertical locating stiffness of axle-box locating system, to adapt to iron
The requirement of the flexibly positioned rigidity of difference for the longitudinal and transverse two directions that road vehicle positions a system.But existing EMU is in height
Very big axial impact can be generated in speed traveling, and existing pivoted arm node is there are longitudinal rigidity and deflection stiffness are excessive, pivoted arm
Node is easy to appear the phenomenon that overload in normal operation, causes pivoted arm node rubber bodies to be damaged, will hold very much in this way
It is easier that pivoted arm node premature deterioration, influences the performance of bogie entirety, therefore suddenly need to be solved.
By patent retrieval do not find have with the patent literature report of same technique of the present invention, have certain relationship with the present invention
Patent mainly have it is following:
1, Patent No. CN200510031727.7, entitled " a kind of combined ball hinged rubber elastic element is axially pre-
The patent of invention of compression method and product ", which disclose a kind of combined ball hinged rubber elastic element axial direction precommpression
Method and product belong to a kind of ball hinged rubber elastic element, including metal-coating, elastic rubbery body, inner metal sleeve and mandrel,
It is characterized in that the metal-coating of ball hinged rubber elastic element, elastic rubbery body and inner metal sleeve are mutually independent two-period form
Composite structure, entire ball hinged rubber elastic element are combined by two independent metal-coatings, elastic rubbery body, inner metal sleeves
What the elastomer of composition axially combined on mandrel, the elastic rubbery body precompressed stress under compression of ball hinged rubber elastic element is
It is realized by adjusting metal-coating and the mutual axial position of inner metal sleeve.Elastic rubbery body precompressed stress under compression can be metal
Inner sleeve is two sections of axial separation, by being compressed axially inner metal sleeve, adjusts axial position of the inner metal sleeve on mandrel and generates
Elastic rubbery body precompressed stress under compression.
2, number of patent application CN200520051167.7, it is entitled " a kind of combined ball hinged rubber elastic element "
Utility model patent, which disclose a kind of combined ball hinged rubber elastic elements, belong to a kind of ball hinged rubber elastic
Element, including metal-coating, elastic rubbery body, inner metal sleeve and mandrel, it is characterized in that the gold of ball hinged rubber elastic element
Belonging to housing, elastic rubbery body and inner metal sleeve is mutually independent two-period form composite structure, entire ball hinged rubber elastic element
It is axially to be combined on mandrel by two independent metal-coatings, elastic rubbery body, inner metal sleeve assembly, flexural pivot class
The elastic rubbery body precompressed stress under compression of rubber elastic element is by adjusting metal-coating and the mutual axial position of inner metal sleeve
It realizes.Elastic rubbery body precompressed stress under compression can be two sections that inner metal sleeve is axial separation, by being compressed axially in metal
Set adjusts axial position of the inner metal sleeve on mandrel and generates elastic rubbery body precompressed stress under compression.
3, Patent No. CN201510707088.5, entitled " adjustment rubber layer pre compressed magnitude changes pivoted arm connection stiffness
Method and pivoted arm node " patent of invention, which disclose a kind of adjustment rubber layer pre compressed magnitude change pivoted arm node it is rigid
The method of degree is the method for preventing axle box bearing from wearing by adjusting pivoted arm node rubber layer pre compressed magnitude, using two pitch cone shapes
Inner hole pivoted arm combination of nodes structure has changed the different axial direction of pivoted arm node by increasing pivoted arm node rubber layer pre compressed magnitude just
Performance is spent, and improves pivoted arm node axial rigidity by increasing pivoted arm node rubber layer pre compressed magnitude, so that axial rigidity control
System avoids deflection stiffness and torsion stiffness from declining in 6-8KN.mm-1, and axle bearing abrasion is effectively reduced.
4, Patent No. CN201510706982.0, it is entitled " by changing pivoted arm node structure size adjusting rigidity
The patent of invention of method and pivoted arm node ", which disclose a kind of by changing pivoted arm node structure size adjusting rigidity
Method, the method to improve pivoted arm connection stiffness matching performance by adjusting pivoted arm node structure size, using in two pitch cone shapes
Hole pivoted arm combination of nodes structure, and the diameter ruler by changing pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and housing
The very little rigidity property to change pivoted arm node, so that the longitudinal rigidity of pivoted arm node and deflection stiffness decline.Pass through rubber-type face
The rigidity of the Matching and modification pivoted arm node of the diameter dimension of size and pivoted arm node inner sleeve and housing, so that the longitudinal direction of pivoted arm node
Rigidity and deflection stiffness decline guarantee that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, and longitudinal rigid by control
Degree reduces deflection stiffness, while by increasing axial rigidity, guaranteeing that the axial rigidity of pivoted arm node is controlled in 6-8KN.mm-1 model
Within enclosing, guarantee that torsion stiffness does not decline.
Although these above-mentioned patents have been directed to pivoted arm node, wherein also specially propose improve pivoted arm node it is pre-
Decrement changes the technical solution of pivoted arm connection stiffness, but proposed Technological improvement plan does not propose how to move for Chinese Industrial Standards (CIS)
The requirement of vehicle group improves pivoted arm node, therefore pivoted arm node longitudinal rigidity and deflection stiffness are excessive, and pivoted arm node is working normally
It is easy to appear overload under state, pivoted arm node is caused to damage, so that the problem of vehicle wheel aggravates, bearing and rail abrasion is still
In the presence of needing further to be studied.
Summary of the invention
It is an object of the invention to cannot be suitable for Highs-speed motor train unit bogie dynamics very well for existing pivoted arm node
The demand of performance, there is longitudinal rigidity in product and deflection stiffness is excessive in normal operation, and pivoted arm node is working normally
It is easy to appear overload under state, pivoted arm node is caused to damage, so that the problem of vehicle wheel aggravates, bearing and rail abrasion, mentions
A kind of method and pivoted arm node of new pivoted arm node overload protection out, the method and pivoted arm of the new pivoted arm node overload protection
Node improves the overload protection performance of pivoted arm node by changing the structure of pivoted arm node, improves the overload protection of pivoted arm node
Situation, so that pivoted arm node reaches the requirement of standard motor train unit bogie vibration damping driving force performance.
In order to reach this purpose, the present invention provides a kind of methods of pivoted arm node overload protection, according to pivoted arm node
Pivoted arm node is divided into two vulcanization bodies and mandrel is pressed fabricated structure by present position, and two of them vulcanize the mutual right of body
On mandrel, and the end face that is connected of two housings is the step structure that three-stage convex-concave rim of the mouth matches；A wherein vulcanization body
Housing is female structure, and another external set of vulcanization is outer male structure, passes through the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference
Together, realize that pivoted arm node vulcanizes the precommpression of body rubber body by the relative position of housing and inner sleeve, it is characterized in that, turning
Radial limiting device is set in arm joint point, the overload in pivoted arm node operational process is prevented by radial limiting device, was played
Carry protective effect.
Further, the radial limiting device is that two radial backstops are arranged on mandrel, and it is past to block inner sleeve respectively
It is mobile among mandrel, and an annular groove is radially dug out on the mandrel between two radial backstops, so that in mandrel and vulcanization
A space is formed between body component, while two vulcanizations are covered with the end face being connected in vitro toward between mandrel and vulcanization body component
It is formed in a space and is extended, the end face being connected is radial to be turned with the distance between mandrel control so that two vulcanizations cover in vitro
The radial deformation moving distance that can bear before arm node overload；When the overload occurs, by making the external set phase of two vulcanizations
The end face of connection radially contacts to form overload protection with mandrel.
Further, described two vulcanizations cover the end face radial direction being connected in vitro and are turning with the distance between mandrel control
The radial deformation moving distance that can bear before arm node overload controls between 3mm-8mm.
Further, described two vulcanizations cover the end face that is connected toward mandrel in vitro and vulcanize and form one between body component
The width of an annular groove is radially dug out on mandrel in a space between less than two radial backstops of the width of extension, and
Two vulcanizations cover the both ends that the end face being connected forms extension in a space between mandrel and vulcanization body component in vitro
Outside carries out chamfering respectively and prevents interference, and protects the rubber bodies of vulcanization body component.
Further, the trough rim mouth difference chamfering that an annular groove is radially dug out on the mandrel, when two vulcanization bodies
The end face that housing is connected toward mandrel and vulcanization body component between formed a space in extension extend into annular groove when,
Wedge angle collision is avoided the occurrence of, while protecting the rubber bodies of vulcanization body component.
A kind of pivoted arm node for realizing above-mentioned overload protection, including pivoted arm node housing, pivoted arm node inner sleeve vulcanize body rubber
Colloid and mandrel, wherein the pivoted arm node housing of pivoted arm node, pivoted arm node inner sleeve, vulcanization body rubber body are divided into two vulcanization bodies
Assembly, then combined with mandrel press fitting, two vulcanization assemblys it is mutual on the mandrel, it is characterized in that, In
Radial limiting device is set in pivoted arm node, the overload in pivoted arm node operational process is prevented by radial limiting device, is played
Overload protective function.
Further, the radial limiting device is that two radial backstops are arranged on mandrel, and it is past to block inner sleeve respectively
It is mobile among mandrel, and an annular groove is radially dug out on the mandrel between two radial backstops, so that in mandrel and vulcanization
A space is formed between body component, while two vulcanizations are covered with the end face being connected in vitro toward between mandrel and vulcanization body component
It is formed in a space and is extended, the end face being connected is radial to be turned with the distance between mandrel control so that two vulcanizations cover in vitro
The radial deformation moving distance that can bear before arm node overload；When the overload occurs, by making the external set phase of two vulcanizations
The end face of connection radially contacts to form overload protection with mandrel.
Further, described two vulcanizations cover the end face radial direction being connected in vitro and are turning with the distance between mandrel control
The radial deformation moving distance that can bear before arm node overload controls between 3mm-8mm.
Further, described two vulcanizations cover the end face that is connected toward mandrel in vitro and vulcanize and form one between body component
The width of an annular groove is radially dug out on mandrel in a space between less than two radial backstops of the width of extension, and
Two vulcanizations cover the both ends that the end face being connected forms extension in a space between mandrel and vulcanization body component in vitro
Outside carries out chamfering respectively and prevents interference, and protects the rubber bodies of vulcanization body component.
Further, the trough rim mouth difference chamfering that an annular groove is radially dug out on the mandrel, when two vulcanization bodies
The end face that housing is connected toward mandrel and vulcanization body component between formed a space in extension extend into annular groove when,
Wedge angle collision is avoided the occurrence of, while protecting the rubber bodies of vulcanization body component.
The present invention has the advantages that
The present invention passes through connecing for pivoted arm node housing and mandrel by itself setting overload protection arrangement in pivoted arm node
Touching forms the overload protection to vulcanization body rubber body, and after pivoted arm node population, certain gap H is formed between mandrel and housing,
When pivoted arm node is radially absorbed impact or overloaded, rubber bodies are protected not to be damaged to adapt to load change.Have so such as
Under some advantages:
1, after pivoted arm node population, certain gap H is formed between mandrel and housing, absorb impact in products radial or
When overload, rubber bodies are protected not to be damaged to adapt to load change；
2, it by adjusting the width of H, realizes the hard backstop function of different distance, while realizing that the overload of different loads is protected
Shield；
3, contacting under by Dynamic Loading with sharp edge metal in order to avoid rubber causes to destroy, and the metal contacted is sharp
Border region has carried out rounded corner design；
4, ring channel structures are formed by by controlling mandrel, effectively overload protection arrangement are avoided interference phenomenon occur.
Detailed description of the invention
Fig. 1 is the pivoted arm node general structure schematic diagram of one embodiment of the invention；
Fig. 2 is one embodiment of the invention pivoted arm node overload protective device structural schematic diagram.
Specific embodiment
It is next in the following with reference to the drawings and specific embodiments that the present invention is further explained.
Embodiment one
Attached drawing gives one embodiment of the invention, it can be seen in the drawings that the present invention relates to a kind of overload protections
Pivoted arm node, including pivoted arm node housing 1, pivoted arm node inner sleeve 2 vulcanize body rubber body 3 and mandrel 4, wherein pivoted arm node
Pivoted arm node housing 1, pivoted arm node inner sleeve 2, vulcanization body rubber body 3 is divided into two vulcanization body assemblys 5 and 6, then presses with mandrel 4
Dress is combined, two vulcanization assemblys 5 and 6 mutually on the mandrel, it is characterized in that, be provided in pivoted arm node
Radial limiting device 7 prevents the radial overload in pivoted arm node operational process by radial limiting device 7, plays radial overload
Protective effect.
The radial limiting device 7 is that two radial backstops 8 are arranged on mandrel, blocks inner sleeve respectively among mandrel
It is mobile, and radially dig out an annular groove 9 on the mandrel between two radial backstops so that mandrel and vulcanization body component it
Between form a space, while the end face that is connected cover toward mandrel to two vulcanizations in vitro and vulcanizes formation one between body component
Extend in space, so that two vulcanizations cover the control of the distance between the end face radial direction being connected and mandrel in pivoted arm node mistake in vitro
The radial deformation moving distance that can bear before load；When the overload occurs, by making two vulcanizations cover the end being connected in vitro
Face diameter contacts to form overload protection to mandrel.
Two vulcanizations cover the end face radial direction being connected in vitro and control with the distance between mandrel H in pivoted arm node mistake
The radial deformation moving distance that can bear before load；Distance H is controlled between 3mm-6mm.
Two vulcanizations cover the end face being connected in vitro and are formed in a space between mandrel and vulcanization body component
The width of an annular groove, and two vulcanizations are radially dug out on mandrel between less than two radial backstops of the width of extension
The end face being connected is covered in vitro, and the both ends outside of extension in a space is formed between mandrel and vulcanization body component respectively
Outside chamfering 10 is carried out, prevents interference, and protect the rubber bodies of vulcanization body component.Outside chamfering 10 is 30-45 degree bevel edge
Chamfering or rounded corner.
There is chamfering 11 on the trough rim mouth both sides that an annular groove is radially dug out on the mandrel 4 respectively, when two vulcanization bodies
The end face that housing is connected toward mandrel and vulcanization body component between formed a space in extension extend into annular groove when,
Wedge angle collision is avoided the occurrence of, while protecting the rubber bodies of vulcanization body component.Chamfering 11 is 30-45 degree bevel edge chamfering or rounding
Angle.
The two housing matching end face of pivoted arm node in three-stage step structure that the three-stage convex-concave rim of the mouth matches
It contacts with each other together after fit on face grouping dress outside housing, and after the interior mating surface part assembling in housing mutually
End face does not contact, and there are gaps, and by rim of the mouth position be positioned close to the lower one third position of the entire faying face of mandrel with
Interior, when to guarantee that housing is matched together, the three-stage fit on face part of housing is very close to each other, and three-stage fit on
Face part has contact surface longer than interior mating surface part, facilitates the length of control housing and prevents mutual interference,
And soil is avoided to remain in the gap of housing.
By above-mentioned design, so that the pivoted arm node of the present embodiment at runtime can when pivoted arm node overloads,
Contact by pivoted arm node housing with mandrel forms the overload protection to vulcanization body rubber body, after pivoted arm node population, mandrel
Certain gap H is formed between housing, when pivoted arm node is radially absorbed impact or overloaded, to adapt to load change protection
Rubber bodies are not damaged.By adjusting the width of H, the hard backstop function of different distance is realized, while realizing the mistake of different loads
Carry protection.
Embodiment two
Embodiment two and the structure of embodiment one are essentially the same, and the gap H only controlled is different, a kind of overload guarantor
The pivoted arm node of shield, including pivoted arm node housing, pivoted arm node inner sleeve vulcanize body rubber body and mandrel, wherein pivoted arm node
Pivoted arm node housing, pivoted arm node inner sleeve, vulcanization body rubber body is divided into two vulcanization body assemblys, then combines with mandrel press fitting
Together, two vulcanization assemblys is mutual on the mandrel, it is characterized in that, radial limit dress is set in pivoted arm node
It sets, the overload in pivoted arm node operational process is prevented by radial limiting device, plays overload protective function.
The radial limiting device is that two radial backstops are arranged on mandrel, blocks inner sleeve respectively and moves among mandrel
It is dynamic, and an annular groove is radially dug out on the mandrel between two radial backstops, so that between mandrel and vulcanization body component
A space is formed, while two vulcanizations are covered with the end face being connected in vitro and forms a sky toward between mandrel and vulcanization body component
Interior extension, so that two vulcanizations cover the control of the distance between the end face radial direction being connected and mandrel in pivoted arm node overload in vitro
Before the radial deformation moving distance that can bear；When the overload occurs, by making two vulcanizations cover the end face being connected in vitro
It is radial to contact to form overload protection with mandrel.
Two vulcanizations cover the control of the distance between the end face radial direction being connected and mandrel in pivoted arm node mistake in vitro
The radial deformation moving distance that can bear before load controls between 6mm-8mm.
Two vulcanizations cover the end face being connected in vitro and are formed in a space between mandrel and vulcanization body component
The width of an annular groove, and two vulcanizations are radially dug out on mandrel between less than two radial backstops of the width of extension
The end face being connected is covered in vitro, and the both ends outside of extension in a space is formed between mandrel and vulcanization body component respectively
It carries out chamfering and prevents interference, and protect the rubber bodies of vulcanization body component.Outside chamfering is that the circular arc that radius is R=3-6mm falls
Angle
The trough rim mouth difference chamfering that an annular groove is radially dug out on the mandrel, when the external set of two vulcanizations is connected
End face toward mandrel and vulcanization body component between formed a space in extension extend into annular groove when, avoid the occurrence of point
Corner impact, while protecting the rubber bodies of vulcanization body component.Chamfering is circular arc chamfering that radius is R=3-6mm to trough rim mouth respectively.
The two housing matching end face of pivoted arm node in three-stage step structure that the three-stage convex-concave rim of the mouth matches
It contacts with each other together after fit on face grouping dress outside housing, and after the interior mating surface part assembling in housing mutually
End face does not contact, and there are gaps, and by rim of the mouth position be positioned close to the lower one third position of the entire faying face of mandrel with
Interior, when to guarantee that housing is matched together, the three-stage fit on face part of housing is very close to each other, and three-stage fit on
Face part has contact surface longer than interior mating surface part, facilitates the length of control housing and prevents mutual interference,
And soil is avoided to remain in the gap of housing.
Above-mentioned listed embodiment, only carries out clear, complete description to technical solution of the present invention in conjunction with attached drawing；It is aobvious
So, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
Through the foregoing embodiment it can be seen that the invention further relates to a kind of methods of pivoted arm node overload protection, according to pivoted arm
Pivoted arm node is divided into two vulcanization bodies and mandrel is pressed fabricated structure by node present position, and two of them vulcanize the phase of body
Mutually on the mandrel, and the end face that is connected of two housings is the step structure that three-stage convex-concave rim of the mouth matches；A wherein sulphur
Changing external set is female structure, and another external set of vulcanization is outer male structure, is assembled by the cooperation of three-stage convex-concave rim of the mouth interference
It links together, realizes that pivoted arm node vulcanizes the precommpression of body rubber body by the relative position of housing and inner sleeve, it is characterized in that,
Radial limiting device is set in pivoted arm node, the overload in pivoted arm node operational process is prevented by radial limiting device, is risen
To overload protective function.
Further, the radial limiting device is that two radial backstops are arranged on mandrel, and it is past to block inner sleeve respectively
It is mobile among mandrel, and an annular groove is radially dug out on the mandrel between two radial backstops, so that in mandrel and vulcanization
A space is formed between body component, while two vulcanizations are covered with the end face being connected in vitro toward between mandrel and vulcanization body component
It is formed in a space and is extended, the end face being connected is radial to be turned with the distance between mandrel control so that two vulcanizations cover in vitro
The radial deformation moving distance that can bear before arm node overload；When the overload occurs, by making the external set phase of two vulcanizations
The end face of connection radially contacts to form overload protection with mandrel.
Further, described two vulcanizations cover the end face radial direction being connected in vitro and are turning with the distance between mandrel control
The radial deformation moving distance that can bear before arm node overload controls between 3mm-8mm.
Further, described two vulcanizations cover the end face that is connected toward mandrel in vitro and vulcanize and form one between body component
The width of an annular groove is radially dug out on mandrel in a space between less than two radial backstops of the width of extension, and
Two vulcanizations cover the both ends that the end face being connected forms extension in a space between mandrel and vulcanization body component in vitro
Outside carries out chamfering respectively and prevents interference, and protects the rubber bodies of vulcanization body component.
Further, the trough rim mouth difference chamfering that an annular groove is radially dug out on the mandrel, when two vulcanization bodies
The end face that housing is connected toward mandrel and vulcanization body component between formed a space in extension extend into annular groove when,
Wedge angle collision is avoided the occurrence of, while protecting the rubber bodies of vulcanization body component.
The present invention has the advantages that
The present invention passes through connecing for pivoted arm node housing and mandrel by itself setting overload protection arrangement in pivoted arm node
Touching forms the overload protection to vulcanization body rubber body, and after pivoted arm node population, certain gap H is formed between mandrel and housing,
When pivoted arm node is radially absorbed impact or overloaded, rubber bodies are protected not to be damaged to adapt to load change.Have so such as
Under some advantages:
1, after pivoted arm node population, certain gap H is formed between mandrel and housing, absorb impact in products radial or
When overload, rubber bodies are protected not to be damaged to adapt to load change；
2, it by adjusting the width of H, realizes the hard backstop function of different distance, while realizing that the overload of different loads is protected
Shield；
3, contacting under by Dynamic Loading with sharp edge metal in order to avoid rubber causes to destroy, and the metal contacted is sharp
Border region has carried out rounded corner design；
4, ring channel structures are formed by by controlling mandrel, effectively overload protection arrangement are avoided interference phenomenon occur.
Claims (4)
1. pivoted arm node is divided into two vulcanizations according to pivoted arm node present position by a kind of method of pivoted arm node overload protection
Body and mandrel are pressed fabricated structure, and two of them vulcanize body mutually on mandrel, and the end face that two housings are connected
The step structure to match for three-stage convex-concave rim of the mouth；Wherein the external set of a vulcanization is female structure, and another external set of vulcanization is outer
It is real together by the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference to pass through the relative position of housing and inner sleeve for male structure
Existing pivoted arm node vulcanizes the precommpression of body rubber body, it is characterised in that: radial limiting device is arranged in pivoted arm node, passes through radial direction
Limiting device prevents the overload in pivoted arm node operational process, plays overload protective function；The radial limiting device be
Two radial backstops are set on mandrel, block inner sleeve movement among mandrel, and the mandrel between two radial backstops respectively
Upper radial direction digs out an annular groove, so that forming a space between mandrel and vulcanization body component, while to two vulcanization bodies
Extend in the space that the end face that housing is connected is formed between mandrel and vulcanization body component, so that the external set of two vulcanizations
The radial radial deformation that can bear before pivoted arm node overload with the distance between mandrel control in the end face that is connected it is mobile away from
From；When the overload occurs, by covering two vulcanizations in vitro, the end face being connected is radial to be contacted to form overload protection with mandrel；
Two vulcanizations cover extension in the space that the end face being connected is formed between mandrel and vulcanization body component in vitro
The width of the annular groove radially dug out on mandrel between less than two radial backstops of the width being divided to, and two vulcanizations are external
Cover in the space that the end face that is connected is formed between mandrel and vulcanization body component on the outside of the both ends of extension respectively into
Row chamfering prevents interference, and protects the rubber bodies of vulcanization body component；The Step-edge Junction that the three-stage convex-concave rim of the mouth matches
It contacts with each other together, and leans on after the fit on face grouping dress outside housing of two housing matching end face of pivoted arm node in structure
Mutually end face does not contact after interior mating surface part assembling in housing, and there are gaps, and rim of the mouth position is positioned close to mandrel
Entire faying face lower one third position within, when to guarantee that housing is matched together, match outside the three-stage of housing
Conjunction face part is very close to each other, and three-stage fit on face part has contact surface longer than interior mating surface part, facilitates control
The length of housing and mutual interference is prevented, and soil is avoided to remain in the gap of housing；Two vulcanizations
The radial radial deformation that can bear before pivoted arm node overload with the distance between mandrel control in the end face being connected is covered in vitro
Moving distance controls between 3mm-8mm.
2. the method for pivoted arm node overload protection as described in claim 1, it is characterised in that: radially dug out on the mandrel
The trough rim mouth of one annular groove distinguishes chamfering, when two vulcanizations cover the end face being connected toward between mandrel and vulcanization body component in vitro
When extension is extend into annular groove in the space formed, wedge angle collision is avoided the occurrence of, while protecting vulcanization body component
Rubber bodies.
3. a kind of pivoted arm node that the method using the protection of pivoted arm node overload described in claim 1 obtains, including pivoted arm node
Housing, pivoted arm node inner sleeve, vulcanization body rubber body and mandrel, wherein the pivoted arm node housing of pivoted arm node, pivoted arm node inner sleeve,
Vulcanization body rubber body is divided into two vulcanization body assemblys, then combines with mandrel press fitting, and two vulcanization body assemblys are mutual
To on mandrel, which is characterized in that radial limiting device is arranged in pivoted arm node, prevents pivoted arm by radial limiting device
Overload in node operational process, plays overload protective function；The radial limiting device is two diameters of setting on mandrel
To backstop, inner sleeve movement among mandrel is blocked respectively, and radially dig out a ring on the mandrel between two radial backstops
Shape slot so that forming a space between mandrel and vulcanization body component, while covering the end face being connected to two vulcanizations in vitro
Extend in the space formed between mandrel and vulcanization body component, so that two vulcanizations cover the end face radial direction being connected in vitro
The distance between mandrel controls the radial deformation moving distance that can bear before pivoted arm node overload；When the overload occurs,
By covering two vulcanizations in vitro, the end face being connected is radial to be contacted to form overload protection with mandrel；Two vulcanization bodies
The width of extension is less than two in the space that the end face that housing is connected is formed between mandrel and vulcanization body component
The width of the annular groove radially dug out on mandrel between radial backstop, and to cover the end face that is connected in vitro past for two vulcanizations
Chamfering is carried out respectively on the outside of the both ends of extension in the space formed between mandrel and vulcanization body component, is prevented dry
It relates to, and protects the rubber bodies of vulcanization body component；The pivoted arm node two in step structure that the three-stage convex-concave rim of the mouth matches
It contacts with each other together after the fit on face grouping dress outside housing of housing matching end face, and the interior mating surface in housing
Mutually end face does not contact after part assembles, and there are gaps, and rim of the mouth position is positioned close under the entire faying face of mandrel
Within one third position, when to guarantee that housing is matched together, the three-stage fit on face part of housing is very close to each other,
And three-stage fit on face part has contact surface longer than interior mating surface part, facilitates the length of control housing and prevents phase
Interference between mutually, and soil is avoided to remain in the gap of housing；Two vulcanizations cover the end face being connected in vitro
The radial radial deformation moving distance that can bear before pivoted arm node overload with the distance between mandrel control is controlled in 3mm-
Between 8mm.
4. pivoted arm node as claimed in claim 3, it is characterised in that: radially dig out the slot of an annular groove on the mandrel
Side mouthful difference chamfering, when two vulcanizations cover the end face being connected toward the space formed between mandrel and vulcanization body component in vitro
When interior extension is extend into annular groove, wedge angle collision is avoided the occurrence of, while protecting the rubber bodies of vulcanization body component.
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| CN201711440779.9A CN108045395B (en) | 2017-12-27 | 2017-12-27 | A kind of overload protection method and pivoted arm node of pivoted arm panel load |
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| CN108045395B true CN108045395B (en) | 2019-11-08 |
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| CN112678011B (en) * | 2021-01-13 | 2022-07-05 | 株洲时代瑞唯减振装备有限公司 | Method and structure for maintaining insulation between rotating arm node outer sleeve and core shaft |
| CN113770683B (en) * | 2021-09-30 | 2022-09-27 | 株洲时代瑞唯减振装备有限公司 | Method for assembling axle box pull rod rubber joint for locomotive |
| 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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Effective date of registration: 20200610 Address after: 412007 No.301, physical and chemical building, Liyu Industrial Park, no.639, Heilongjiang Road, Tianyuan District, Zhuzhou City, Hunan Province Patentee after: Zhuzhou Times Ruiwei damping equipment Co., Ltd Address before: 412007 No. 18 Haitian Road, Tianyuan District, Hunan, Zhuzhou Patentee before: Zhuzhou Times New Material Technology Co.,Ltd. |
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