CN108045395A - A kind of overload protection method of pivoted arm panel load and pivoted arm node - Google Patents
A kind of overload protection method of pivoted arm panel load and pivoted arm node Download PDFInfo
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- CN108045395A CN108045395A CN201711440779.9A CN201711440779A CN108045395A CN 108045395 A CN108045395 A CN 108045395A CN 201711440779 A CN201711440779 A CN 201711440779A CN 108045395 A CN108045395 A CN 108045395A
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- Prior art keywords
- pivoted arm
- mandrel
- arm node
- vulcanization
- face
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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 is pressed fabricated structure with mandrel; two of which vulcanization body it is mutual to being mounted 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；The external set of wherein one vulcanization is female structure; another external set of vulcanization is outer male structure; by the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference together; realize that pivoted arm node vulcanizes body rubber body precommpression by the relative position of housing and inner sleeve; radial limiting device is set in pivoted arm node; overload in pivoted arm node operational process is prevented by radial limiting device, plays overload protective function.Itself sets overload protection arrangement in pivoted arm node, forms the overload protection to vulcanizing body rubber body by contact of the pivoted arm node housing with mandrel, when pivoted arm node is radially absorbed impact or overloaded, to adapt to load change rubber bodies is protected not to be damaged.
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 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 technology
In order to really form our the autonomous unified high ferro standard techniques of country, China started just to propose in 2012 to want
Establish the standard EMU of China.So-called Chinese Industrial Standards (CIS) EMU：It referred to as marks and moves, refer to Chinese Industrial Standards (CIS) system and occupy an leading position
EMU（In 254 major criterions, various Chinese Industrial Standards (CIS)s account for 84%）, the construction reference of profile and mating track
All higher than European standard and Nippon Standard, there is distinct and comprehensive Chinese feature；This also refers in the environment in face of diversified CRH
In（Including the four big CRH6 for introducing type and Chinese autonomous Design）, Chinese EMU is carried out and is standardized（It is unitized）Design with
It interconnects.This new 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, by using names EMU Chinese Industrial Standards (CIS)（Hua Biao）, represent the advanced standard body of current world's EMU technology
System.
The main purpose for developing Chinese Industrial Standards (CIS) EMU is：
1st, the needs of scientific research and innovation, research of technique.Strengthen the scientific research and research of technique of high-speed railway key technology, make China
High ferro technology keeps world lead level.
2nd, seek unity of standard, reduce 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 is required for re-starting design and research；Wherein, it is among pivoted arm to be installed on one, is connected for pivoted arm positioning flexible
It connects, the pivoted arm node for transferring longitudinal force is exactly one of them.Pivoted arm node is also referred to as axle box guidance joint, is train A class keys 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 that axis top spring positions, the journal box spring
Seat plays main vertical carrying in the top of axle box, center line with taking turns to center line in one plane.Pivoted arm section
Point is installed on one when being among pivoted arm, and 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 welded architecturally.Pivoted arm node allows axle box to have larger 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 is positioned for 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 susceptible to the phenomenon that overload in normal operation, and pivoted arm node rubber bodies is caused to be damaged, will so be held very much
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 of same technique of the present invention, have certain relation with the present invention
Patent mainly have it is following：
1st, Patent No. CN200510031727.7, a kind of entitled " combined ball hinged rubber elastic element axial direction precommpression
The patent of invention of 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, it is special including metal-coating, elastic rubbery body, inner metal sleeve and mandrel
Point is that the metal-coating, elastic rubbery body and inner metal sleeve of ball hinged rubber elastic element combine for mutually independent two-period form
Structure, entire ball hinged rubber elastic element are to be combined to form by two independent metal-coatings, elastic rubbery body, inner metal sleeves
Elastomer axially combine on mandrel, the elastic rubbery body precompressed stress under compression of ball hinged rubber elastic element is to pass through
Adjust what metal-coating was realized with the mutual axial position of inner metal sleeve.Elastic rubbery body precompressed stress under compression can be inner metal sleeve
For two sections of axial separation, by being compressed axially inner metal sleeve, axial position of the adjustment inner metal sleeve on mandrel generates elasticity
Rubber bodies precompressed stress under compression.
2nd, number of patent application CN200520051167.7, entitled " a kind of combined ball hinged rubber elastic element "
Utility model patent which disclose a kind of combined ball hinged rubber elastic element, belong to a kind of ball hinged rubber elastic
Element, including metal-coating, elastic rubbery body, inner metal sleeve and mandrel, feature is the gold of ball hinged rubber elastic element
Belong to housing, elastic rubbery body and inner metal sleeve for mutually independent two-period form combining 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, axial position of the adjustment inner metal sleeve on mandrel generate elastic rubbery body precompressed stress under compression.
3rd, 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, to change pivoted arm node firm
The method of degree is the method that axle box bearing abrasion is prevented by adjusting pivoted arm node rubber layer pre compressed magnitude, using two pitch cone shapes
Endoporus pivoted arm combination of nodes structure has changed the different axial direction of pivoted arm node just by increasing pivoted arm node rubber layer pre compressed magnitude
Performance is spent, and pivoted arm node axial rigidity is improved by increasing pivoted arm node rubber layer pre compressed magnitude so that axial rigidity control
It makes in 6-8KN.mm-1, deflection stiffness and torsion stiffness is avoided to decline, effectively reduce axle bearing abrasion.
4th, 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 is the method for improving 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 pass through the diameter ruler for changing pivoted arm node rubber molding surface size and pivoted arm node inner sleeve and housing
It is very little to change the rigidity property of pivoted arm node so that the longitudinal rigidity and deflection stiffness of pivoted arm node decline.Pass through rubber-type face
The rigidity of the Matching and modification pivoted arm node of size and the diameter dimension of pivoted arm node inner sleeve and housing so that the longitudinal direction of pivoted arm node
Rigidity and deflection stiffness decline, and ensure that the longitudinal rigidity of pivoted arm node is controlled in 11-13KN.mm-1, and it is firm to pass through control longitudinal direction
Degree reduces deflection stiffness, while by increasing axial rigidity, ensures that the axial rigidity of pivoted arm node is controlled in 6-8KN.mm-1 models
Within enclosing, ensure that torsion stiffness does not decline.
Although these above-mentioned patents have been directed to pivoted arm node, wherein what is also had special proposes that improve pivoted arm node 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
Overload is susceptible under state, pivoted arm node is caused to damage so that the problem of car wheel-set, bearing and rail abrasion aggravate is still
In the presence of needing further to be studied.
The content of the invention
It is an object of the invention to be directed to existing pivoted arm node to be suitable for Highs-speed motor train unit bogie dynamics very well
The demand of performance, in normal operation there are longitudinal rigidity and deflection stiffness are excessive, pivoted arm node is working normally product
Overload is susceptible under state, pivoted arm node is caused to damage so that the problem of car wheel-set, bearing and rail abrasion aggravate carries
Go out a kind of method and pivoted arm node of new pivoted arm node overload protection, 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 method of pivoted arm node overload protection, according to pivoted arm node
Pivoted arm node is divided into two vulcanization bodies and is pressed fabricated structure with mandrel by present position, and two of which vulcanizes 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；Wherein one 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 body rubber body precommpression by the relative position of housing and inner sleeve, feature is, is turning
Radial limiting device in arm joint point is set, 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 two radial direction backstops of setting 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 direction backstop 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 extended so that two vulcanizations cover the end face being connected and radially turning with the distance between mandrel control in vitro
The radial deformation displacement distance that can bear before arm node overload；When the overload occurs, the external set phase of two vulcanizations is passed through
The end face of connection radially contacts to form overload protection with mandrel.
Further, described two vulcanizations cover the end face being connected and are radially turning with the distance between mandrel control in vitro
The radial deformation displacement distance that can bear before arm node overload is controlled between 3mm-8mm.
Further, described two vulcanizations cover the end face that is connected toward mandrel and vulcanize and form one between body component in vitro
The width of extension is less than the width that an annular groove is radially dug out on the mandrel between two radial direction backstops in a space, 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 and prevents interference respectively, and protects the rubber bodies of vulcanization body component.
Further, the trough rim mouth difference chamfering of an annular groove is radially dug out on the mandrel, vulcanizes body when two
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 protects 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 vulcanizes body rubber
The pivoted arm node housing of colloid and mandrel, wherein 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 vulcanize the mutual to being mounted on mandrel of assembly, and feature is,
Radial limiting device in pivoted arm node is set, 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 two radial direction backstops of setting 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 direction backstop 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 extended so that two vulcanizations cover the end face being connected and radially turning with the distance between mandrel control in vitro
The radial deformation displacement distance that can bear before arm node overload；When the overload occurs, the external set phase of two vulcanizations is passed through
The end face of connection radially contacts to form overload protection with mandrel.
Further, described two vulcanizations cover the end face being connected and are radially turning with the distance between mandrel control in vitro
The radial deformation displacement distance that can bear before arm node overload is controlled between 3mm-8mm.
Further, described two vulcanizations cover the end face that is connected toward mandrel and vulcanize and form one between body component in vitro
The width of extension is less than the width that an annular groove is radially dug out on the mandrel between two radial direction backstops in a space, 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 and prevents interference respectively, and protects the rubber bodies of vulcanization body component.
Further, the trough rim mouth difference chamfering of an annular groove is radially dug out on the mandrel, vulcanizes body when two
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 protects the rubber bodies of vulcanization body component.
The advantage of the invention is that：
The present invention passes through contact shape of the pivoted arm node housing with mandrel by itself setting overload protection arrangement in pivoted arm node
The overload protection of vulcanization body rubber body in pairs, after pivoted arm node population, forms certain gap H between mandrel and housing, turning
When arm joint point is radially absorbed impact or overloaded, to adapt to load change rubber bodies is protected not to be damaged.So have as next
A little advantages：
1st, after pivoted arm node population, certain gap H is formed between mandrel and housing, absorbs impact or overloads in products radial
When, to adapt to load change rubber bodies is protected not to be damaged；
2nd, by adjusting the width of H, realize the hard backstop function of different distance, while realize the overload protection of different loads；
3rd, cause to destroy in order to avoid rubber contacts under by Dynamic Loading with sharp edge metal, the metal sharp edge area contacted
Domain has carried out rounded corner design；
4th, by the ring channel structures that mandrel is controlled to be formed, effectively overload protection arrangement is avoided interference phenomenon occur.
Description of the drawings
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 structure 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 pivoted arms of overload protection
Node, including pivoted arm node housing 1, pivoted arm node inner sleeve 2, the pivoted arm of vulcanization body rubber body 3 and mandrel 4, wherein pivoted arm node
Node housing 1, pivoted arm node inner sleeve 2, vulcanization body rubber body 3 are divided into two vulcanization body assemblys 5 and 6, then with 4 press fitting group of mandrel
It is combined, mutually to being mounted on mandrel, feature is two vulcanization assemblys 5 and 6, is provided in pivoted arm node radially
Limiting device 7 is prevented the radial direction in pivoted arm node operational process from overloading by radial limiting device 7, plays radial direction overload protection
Effect.
The radial limiting device 7 is two radial direction backstops 8 of setting on mandrel, blocks inner sleeve respectively among mandrel
It is mobile, and an annular groove 9 is radially dug out on the mandrel between two radial direction backstop so that mandrel and vulcanization body component it
Between formed a space, while to two vulcanization cover in vitro the end face being connected toward mandrel and vulcanize body component between formation one
Extend in space so that two vulcanizations covers the end face radial direction being connected and controlled with the distance between mandrel in pivoted arm node mistake in vitro
The radial deformation displacement distance that can bear before load；When the overload occurs, the end being connected is covered in vitro by two vulcanizations
Face diameter contacts to form overload protection to mandrel.
Two vulcanizations cover the end face being connected and are radially controlled with the distance between mandrel H in pivoted arm node mistake in vitro
The radial deformation displacement distance that can bear before load；Distance H is controlled between 3mm-6mm.
Two vulcanizations cover the end face being connected and are formed between mandrel and vulcanization body component in a space in vitro
The width of extension is less than the width that an annular groove is radially dug out on the mandrel between two radial direction backstops, and two vulcanizations
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, interference is prevented, and protects the rubber bodies of vulcanization body component.Outside chamfering 10 is 30-45 degree bevel edges
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, vulcanize body when two
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 protects the rubber bodies of vulcanization body component.Chamfering 11 is 30-45 degree bevel edge chamferings or rounding
Angle.
Two housing matching end face of pivoted arm node in the 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 by housing, and after being assembled by the interior mating surface part in housing mutually
End face does not contact, and leaves gap, and rim of the mouth position is positioned close to lower 1/3rd position of the entire faying face of mandrel with
It is interior, with ensure housing match together when, the three-stage fit on face part of housing is very close to each other, and three-stage fit on
Face part has the 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.
Pass through above-mentioned design so that the pivoted arm node of the present embodiment operationally can when pivoted arm node overloads,
Overload protection to vulcanizing body rubber body is formed by contact of the pivoted arm node housing with mandrel, 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 realize the mistake of different loads
Carry protection.
Embodiment two
Embodiment two and the structure of embodiment one are essentially the same, and simply controlled gap H is different, a kind of overload protection
Pivoted arm node, including pivoted arm node housing, pivoted arm node inner sleeve vulcanizes the pivoted arm of body rubber body and mandrel, wherein pivoted arm node
Node housing, pivoted arm node inner sleeve, vulcanization body rubber body is divided into two vulcanization body assemblys, then is combined with mandrel press fitting one
It rises, two vulcanize the mutual to being mounted on mandrel of assembly, and feature is, radial limiting device is set in pivoted arm node,
Overload in pivoted arm node operational process is prevented by radial limiting device, plays overload protective function.
The radial limiting device is two radial direction backstops of setting on mandrel, blocks inner sleeve respectively and is moved among mandrel
It is dynamic, and an annular groove is radially dug out on the mandrel between two radial direction backstop so that between mandrel and vulcanization body component
A space is formed, while the end face being connected is covered in vitro to two vulcanizations and forms a sky toward between mandrel and vulcanization body component
Interior extension so that two vulcanizations covers the end face radial direction being connected and controlled with the distance between mandrel in pivoted arm node overload in vitro
Before the radial deformation displacement distance that can bear；When the overload occurs, the end face being connected is covered in vitro by two vulcanizations
Radially contact to form overload protection with mandrel.
Described two vulcanizations covers the distance between the end face radial direction that is connected and mandrel and control in pivoted arm node mistake in vitro
The radial deformation displacement distance that can bear before load is controlled between 6mm-8mm.
Two vulcanizations cover the end face being connected and are formed between mandrel and vulcanization body component in a space in vitro
The width of extension is less than the width that an annular groove is radially dug out on the mandrel between two radial direction backstops, and two vulcanizations
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 of an annular groove is radially dug out on the mandrel, when two vulcanizations cover the end being connected in vitro
Face toward mandrel and vulcanization body component between formed a space in extension extend into annular groove when, avoid the occurrence of wedge angle and touch
It hits, while protects the rubber bodies of vulcanization body component.Chamfering is circular arc chamfering that radius is R=3-6mm to trough rim mouth respectively.
Two housing matching end face of pivoted arm node in the 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 by housing, and after being assembled by the interior mating surface part in housing mutually
End face does not contact, and leaves gap, and rim of the mouth position is positioned close to lower 1/3rd position of the entire faying face of mandrel with
It is interior, with ensure housing match together when, the three-stage fit on face part of housing is very close to each other, and three-stage fit on
Face part has the 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, simply carries out technical scheme clear, complete description with reference to attached drawing；It is aobvious
So, described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, all other embodiment that those of ordinary skill in the art are obtained without making creative work, all
Belong to the scope of protection of the invention.
By above-described embodiment it can be seen that the invention further relates to a kind of method that pivoted arm node overload is protected, according to pivoted arm
Pivoted arm node is divided into two vulcanization bodies and is pressed fabricated structure with mandrel by node present position, and two of which vulcanizes the phase of body
Mutually to being mounted 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 sulphur
It is female structure to change external set, 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 linking together, realizes that pivoted arm node vulcanizes body rubber body precommpression by the relative position of housing and inner sleeve, feature is,
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 two radial direction backstops of setting 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 direction backstop 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 extended so that two vulcanizations cover the end face being connected and radially turning with the distance between mandrel control in vitro
The radial deformation displacement distance that can bear before arm node overload；When the overload occurs, the external set phase of two vulcanizations is passed through
The end face of connection radially contacts to form overload protection with mandrel.
Further, described two vulcanizations cover the end face being connected and are radially turning with the distance between mandrel control in vitro
The radial deformation displacement distance that can bear before arm node overload is controlled between 3mm-8mm.
Further, described two vulcanizations cover the end face that is connected toward mandrel and vulcanize and form one between body component in vitro
The width of extension is less than the width that an annular groove is radially dug out on the mandrel between two radial direction backstops in a space, 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 and prevents interference respectively, and protects the rubber bodies of vulcanization body component.
Further, the trough rim mouth difference chamfering of an annular groove is radially dug out on the mandrel, vulcanizes body when two
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 protects the rubber bodies of vulcanization body component.
The advantage of the invention is that：
The present invention passes through contact shape of the pivoted arm node housing with mandrel by itself setting overload protection arrangement in pivoted arm node
The overload protection of vulcanization body rubber body in pairs, after pivoted arm node population, forms certain gap H between mandrel and housing, turning
When arm joint point is radially absorbed impact or overloaded, to adapt to load change rubber bodies is protected not to be damaged.So have as next
A little advantages：
1st, after pivoted arm node population, certain gap H is formed between mandrel and housing, absorbs impact or overloads in products radial
When, to adapt to load change rubber bodies is protected not to be damaged；
2nd, by adjusting the width of H, realize the hard backstop function of different distance, while realize the overload protection of different loads；
3rd, cause to destroy in order to avoid rubber contacts under by Dynamic Loading with sharp edge metal, the metal sharp edge area contacted
Domain has carried out rounded corner design；
4th, by the ring channel structures that mandrel is controlled to be formed, effectively overload protection arrangement is avoided interference phenomenon occur.
Claims (10)
1. a kind of method of pivoted arm node overload protection, according to pivoted arm node present position, is divided into two vulcanizations by pivoted arm node
Body is pressed fabricated structure with mandrel, and two of which vulcanizes the mutual to being mounted on mandrel of body, and the end that two housings are connected
Face is the step structure that three-stage convex-concave rim of the mouth matches；The external set of wherein one vulcanization is female structure, and another external set of vulcanization is
Outer male structure, passes through housing and the relative position of inner sleeve by the cooperation assembly and connection of three-stage convex-concave rim of the mouth interference together
Realize the vulcanization body rubber body precommpression of pivoted arm node, it is characterised in that：Radial limiting device is set in pivoted arm node, passes through footpath
The overload in pivoted arm node operational process is prevented to limiting device, plays overload protective function.
2. the method for pivoted arm node overload protection as described in claim 1, it is characterised in that：The radial limiting device is
Two radial direction backstops on mandrel are set, block inner sleeve movement among mandrel, and the core between two radial direction backstop respectively
An annular groove is radially dug out on axis so that a space is formed between mandrel and vulcanization body component, while two are vulcanized
The end face being connected is covered in vitro and is formed between mandrel and vulcanization body component in a space and is extended so that two external sets of vulcanization
The end face that is connected radially with the radial deformation movement that the distance between mandrel control can bear before pivoted arm node overload away from
From；When the overload occurs, the end face being connected radial direction is covered in vitro by two vulcanizations to contact to form overload protection with mandrel.
3. the method for pivoted arm node overload protection as claimed in claim 2, it is characterised in that：The external set of two vulcanizations
The end face that is connected radially with the radial deformation movement that the distance between mandrel control can bear before pivoted arm node overload away from
From control between 3mm-8mm.
4. the method for pivoted arm node overload protection as described in claim 1, it is characterised in that：The external set of two vulcanizations
The width that the end face being connected forms extension in a space between mandrel and vulcanization body component stops less than two radial directions
Radially dig out the width of an annular groove on mandrel between gear, and two vulcanizations cover the end face that is connected toward mandrel and sulphur in vitro
It carries out chamfering between change body component in one space of formation on the outside of the both ends of extension respectively and prevents interference, and protect sulphur
Change the rubber bodies of body component.
5. the method for pivoted arm node overload protection as claimed in claim 4, it is characterised in that：It is radially dug out on the mandrel
The trough rim mouth difference chamfering of one annular groove, 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 one space of formation, wedge angle collision is avoided the occurrence of, while protects vulcanization body component
Rubber bodies.
6. a kind of pivoted arm node for realizing overload protection described in claim 1, including pivoted arm node housing, pivoted arm node inner sleeve,
Vulcanize the pivoted arm node housing of body rubber body and mandrel, wherein pivoted arm node, pivoted arm node inner sleeve, vulcanization body rubber body is divided into two
A vulcanization body assembly, then combined with mandrel press fitting, mutual to being mounted on mandrel, the feature of two vulcanization assemblys
It is, radial limiting device is set in pivoted arm node, the mistake in pivoted arm node operational process is prevented by radial limiting device
It carries, plays overload protective function.
7. the pivoted arm node of overload protection as claimed in claim 6, it is characterised in that：The radial limiting device is in mandrel
Two radial direction backstops of upper setting block inner sleeve movement among mandrel, and footpath on the mandrel between two radial direction backstop respectively
To digging out an annular groove so that a space is formed between mandrel and vulcanization body component, while to the external set of two vulcanizations
The end face being connected forms in a space between mandrel and vulcanization body component and extends so that two external sets of vulcanization are connected
The radial deformation displacement distance that radially can bear with the control of the distance between mandrel before pivoted arm node overload of end face；It has served as
When carrying generation, the end face being connected radial direction is covered in vitro by two vulcanizations and contacts to form overload protection with mandrel.
8. the pivoted arm node of overload protection as claimed in claim 7, it is characterised in that：The external set of two vulcanizations is connected
The radial deformation displacement distance that radially can bear with the control of the distance between mandrel before pivoted arm node overload of end face control
Between 3mm-8mm.
9. the pivoted arm node of overload protection as claimed in claim 6, it is characterised in that：The external set of two vulcanizations is connected
End face the width of extension in a space formed between mandrel and vulcanization body component be less than between two radial direction backstops
Mandrel on radially dig out the width of an annular groove, and two vulcanizations covers the end face being connected toward mandrel and vulcanize body group in vitro
It carries out chamfering between part in one space of formation on the outside of the both ends of extension respectively and prevents interference, and protect vulcanization body group
The rubber bodies of part.
10. the pivoted arm node of overload protection as claimed in claim 9, it is characterised in that：One is radially dug out on the mandrel
The trough rim mouth difference chamfering of annular groove is formed when two vulcanizations cover the end face being connected in vitro toward between mandrel and vulcanization body component
When extension is extend into annular groove in one space, wedge angle collision is avoided the occurrence of, while protects the rubber of vulcanization body component
Body.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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 CN108045395B (en) | 2019-11-08 |
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| Publication number | Publication date |
|---|---|
| CN108045395B (en) | 2019-11-08 |
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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. |