CN104444172A - Cross rod protection device - Google Patents
Cross rod protection device Download PDFInfo
- Publication number
- CN104444172A CN104444172A CN201410698208.5A CN201410698208A CN104444172A CN 104444172 A CN104444172 A CN 104444172A CN 201410698208 A CN201410698208 A CN 201410698208A CN 104444172 A CN104444172 A CN 104444172A
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- Prior art keywords
- crossbar
- over cap
- nut
- stud
- face
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Abstract
A cross rod protection device comprises a disc-shaped protection cover, a nut is arranged on the upper end face of the protection cover, a bolt is arranged on the lower end face of the protection cover, the nut, the protection cover and the bolt are coaxially arranged and are of an integral structure, the protection cover, the nut and the bolt are made of nylon, the diameter of the protection cover is equal to the outer diameter of the end face of a cross rod, the bolt is located inside the cross rod and is in threaded connection with the cross rod, and the lower surface of the protection cover makes close contact with the end face of the cross rod to form a sealing structure. When shot blasting maintaining is carried out on the cross rod, the protection device is installed and can well play a role in protecting the internal thread and the end face of the cross rod, the connection firmness of the bolt and the cross rod and the contact effect of the end face of the cross rod and a rubber cushion cannot be affected when the cross rod is used again, the diamond resistant rigidity of a cross supporting device under side frame elasticity cannot be affected, the number of repeated using times of the cross rod is increased, and the service life of the cross rod is prolonged.
Description
Technical field
The invention belongs to parts technical field used for rail vehicle, relate to a kind of crossbar fender guard, be applied in the ball blast maintenance of crossbar.
Background technology
Bogie truck is one of parts of paramount importance in guideway vehicle structure, side frame elasticity lower cross-braced bogie device in three-piece bogie in order to improve the diamond resistant rigidity of bogie truck, thus improves the Snakes model critical speed of bogie truck, improves the stability of lorry linear running.Meanwhile, side frame elasticity lower cross-braced bogie device effectively can keep the normotopia state of bogie truck, thus reduces the angle of attack of vehicle at straight line and curve motion hour wheel pair and rail, improves the curving performance of bogie truck, significantly reduces wheel-rail wear.
Side frame elasticity lower cross-braced bogie device comprises crossbar, rubber pad and firm bolt, and after using a period of time, crossbar meeting corrosion, so need to carry out ball blast to crossbar to safeguard process, processing rear crossbar can also repeated usage.Prior art is when carrying out ball blast and safeguarding process, do not take any safeguard procedures, so surrounding throws the negative thread that next steel sand can damage crossbar and the end face contacted with rubber pad, what can affect impregnability when bolt is connected with crossbar and crossbar end face and rubber pad when crossbar reuses contacts effect, reduce the diamond resistant rigidity of side frame elasticity lower cross-braced bogie device, thus decrease the repeated usage number of times of crossbar, make the service life of crossbar shorter.Some people first blocks with the end of thing by crossbar, although can reduce the damage of internal threads, the end face of crossbar still can be damaged.
Summary of the invention
The present invention is in order to overcome the defect of prior art, devise a kind of crossbar fender guard, when carrying out ball blast maintenance process to crossbar, this fender guard is threaded with crossbar, the protection negative thread of crossbar and the effect of end face can be played well, the negative thread of crossbar and end face is avoided to be damaged, what can not affect impregnability when bolt is connected with crossbar and crossbar end face and rubber pad when crossbar reuses contacts effect, the diamond resistant rigidity of side frame elasticity lower cross-braced bogie device can not be affected, thus increase the repeated usage number of times of crossbar, extend the service life of crossbar.
The concrete technical scheme that the present invention takes is: a kind of crossbar fender guard, be applied on the crossbar of tubulose, crossbar end is provided with negative thread, key is: described fender guard comprises disc shaped over cap, the upper surface of over cap is provided with nut, the lower surface of over cap is provided with stud, nut, over cap and stud coaxially arrange and are structure as a whole, over cap, the material of nut and stud is all polymer composite, the diameter of over cap is equal with the external diameter of crossbar end face, stud is positioned at crossbar inside and is threaded with crossbar, the lower surface of over cap and the end face close contact of crossbar form hermetically-sealed construction.
Described polymer composite is nylon, polyurethane or polyethylene.
The diameter ratio of described over cap diameter, the circumscribed circle diameter of nut, stud is (3 ~ 15): (2 ~ 9): (1 ~ 7).
The diameter of described over cap is 4 ~ 12cm, and the circumscribed circle diameter of nut is 2 ~ 6cm, and the diameter of stud is 1.5 ~ 4cm.
The diameter of described over cap is 10.5cm, and the circumscribed circle diameter of nut is 4.2cm, and the diameter of stud is 2.4cm.
The thickness of described over cap is 0.5 ~ 4cm, and the thickness of nut is 0.5 ~ 4cm, and the length of stud is 1 ~ 10cm.
The thickness of described over cap is 1cm, and the thickness of nut is 2cm, and the length of stud is 4cm.
Described nut is hexagonal (hexagon)nut.
The invention has the beneficial effects as follows: when carrying out ball blast maintenance process to crossbar, the stud of this fender guard is threaded with crossbar, make the lower surface of over cap and the end face close contact of crossbar form hermetically-sealed construction simultaneously, can effectively prevent steel sand from entering crossbar inside and damaging negative thread, steel sand can be avoided to get on crossbar end face simultaneously and damage is caused to end face, the effect of protection crossbar negative thread and end face can be played well, the negative thread of crossbar and end face is avoided to be damaged, what make crossbar can not affect impregnability when bolt is connected with crossbar and crossbar end face and rubber pad when reusing contacts effect, the diamond resistant rigidity of side frame elasticity lower cross-braced bogie device can not be affected, thus increase the repeated usage number of times of crossbar, extend the service life of crossbar.
Nut, over cap and stud are formed in one structure, decrease the number of assembling, make fender guard more simple and convenient when dismounting, can save work-hours, increase work efficiency.
Stud is made up of polymer composite, has elasticity, so can not produce any rigid friction with the negative thread of crossbar and cause damage to the negative thread of crossbar when stud is threaded with crossbar.
Over cap is also made up of polymer composite; there is elasticity; so good airproof performance when over cap and crossbar end contact form hermetically-sealed construction, and over cap can not produce any rigid friction with the end face of crossbar and cause damage to the end face of crossbar.
Nut is also made up of polymer composite; there is elasticity; compared with the nut of other metal material; longer service life in ball blast process; and polymer composite can be recycled, so when fender guard uses a period of time to re-use, reuse after processing can be reclaimed; cost-saving, recycling rate of waterused is high.
Containing glass fibre in polymer composite, can toughness be increased, extend the service life of fender guard.
Be provided with seal ring between the lower surface of over cap and the end face of crossbar, utilize seal ring can improve leak tightness between over cap and crossbar end face, prevent steel sand from getting to crossbar end face and negative thread further, play a protective role better.
Nut is hexagonal (hexagon)nut, compared with the nut of other shape, can ensure its in-use performance, and hexagonal (hexagon)nut stability in force process is also best while saving material.The anglec of rotation of hexagonal (hexagon)nut is 60 °, namely twists 60 ° and changes hand, also easily twist so work in small space, easy to use.
The diameter of over cap is 4 ~ 12cm; the diameter of over cap is selected according to the end face size of crossbar; the diameter of over cap is too large waste material; too little crossbar end face can not to be covered completely; the effect of protection crossbar end face can not be played well, so the diameter of over cap should be equal with the diameter of crossbar end face.
The diameter of stud is 1.5 ~ 4cm; the diameter of stud is selected according to the internal diameter size of crossbar; the diameter of stud is too large not only wastes material; and all can compare effort when to be threaded with crossbar or to dismantle; too little then firmly can not to lock with crossbar; the effect of protection crossbar negative thread can not be played well, so the diameter of stud should be equal with the diameter of crossbar internal diameter.
According to the nut that the diameter of over cap and the diameter selection circumscribed circle diameter of stud are the suitable size of 2 ~ 6cm; more time saving and energy saving when can make dismounting; because nut is too large waste material; and entirety also unsightly; nut is too little; fast and effeciently rotational force can not be passed to stud during dismounting, so waste time and energy.
After increasing protection edge, after by fender guard and crossbar screw-threaded coupling, protection, along enclosing therein by crossbar end face, further reduces the probability that steel sand touches crossbar end face, enhances protected effect.
Crossbar is very long very heavy, in handling process, will cause damage slightly because of carelessness to the end face of crossbar, is first loaded onto by this fender guard before carrying now, just can effectively avoid causing damage to crossbar end face during carrying.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the present invention and crossbar exploded view when assembling.
In accompanying drawing, 1 represents over cap, and 2 represent nut, and 3 represent stud, and 4 represent crossbar.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
As shown in Figure 1 and Figure 2; a kind of crossbar fender guard; be applied on the crossbar 4 of tubulose; crossbar 4 end is provided with negative thread; key is: described fender guard comprises disc shaped over cap 1, the upper surface of over cap 1 is provided with nut 2; be preferably hexagonal (hexagon)nut; the lower surface of over cap 1 is provided with stud 3; the diameter of over cap 1 is 4 ~ 12cm; be preferably 10.5cm, the circumscribed circle diameter of nut 2 is 2 ~ 6cm, is preferably 4.2cm; the diameter of stud 3 is 1.5 ~ 4cm, is preferably 2.4cm.The thickness of over cap 1 is 0.5 ~ 4cm, and be preferably 1cm, the thickness of nut 2 is 0.5 ~ 4cm, and be preferably 2cm, the length of stud 3 is 1 ~ 10cm, is preferably 4cm.Nut 2, over cap 1 and stud 3 coaxially arrange and are structure as a whole; the material of over cap 1, nut 2 and stud 3 is all polymer composite; be preferably nylon, polyurethane or polyethylene; the diameter of over cap 1 is equal with the external diameter of crossbar 4 end face; stud 3 is positioned at crossbar 4 inside and is threaded with crossbar 4; seal ring is provided with between the lower surface of over cap 1 and the end face of crossbar 4; ring set is on stud 3, and the lower surface of over cap 1 and the end face of crossbar 4 form hermetically-sealed construction.
Before crossbar 4 being carried out to ball blast and safeguarding process, being enclosed within by hex spanner nut 2 rotates clockwise makes stud 3 be threaded with crossbar 4, make the lower surface of over cap 1 and the end face close contact of crossbar 4 form hermetically-sealed construction simultaneously, like this when carrying out Shot Blasting, can effectively prevent steel sand from entering crossbar 4 inside and damaging negative thread, steel sand can be avoided to get on crossbar 4 end face simultaneously and damage is caused to end face, the effect of protection crossbar 4 negative thread and end face can be played well, what make crossbar 4 can not affect impregnability when bolt is connected with crossbar 4 and crossbar 4 end face and rubber pad when reusing contacts effect, the diamond resistant rigidity of side frame elasticity lower cross-braced bogie device can not be affected, thus increase the repeated usage number of times of crossbar 4, extend the service life of crossbar 4.After ball blast has been safeguarded, pull down fender guard, structure is simple, easy accessibility.
Provide one group of observed data below, as shown in table 1:
Table 1
From the data in table 1; carry out ball blast after crossbar adds fender guard of the present invention again and safeguard process, the repeated usage number of times of crossbar is maximum, and service life is the longest; average minimum to each use cost, so fender guard protection effect of the present invention is best.
Claims (10)
1. a crossbar fender guard, be applied on the crossbar (4) of tubulose, crossbar (4) end is provided with negative thread, it is characterized in that: described fender guard comprises disc shaped over cap (1), the upper surface of over cap (1) is provided with nut (2), the lower surface of over cap (1) is provided with stud (3), nut (2), over cap (1) and stud (3) coaxially arrange and are structure as a whole, over cap (1), the material of nut (2) and stud (3) is all polymer composite, the diameter of over cap (1) is equal with the external diameter of crossbar (4) end face, stud (3) is positioned at crossbar (4) inside and is threaded with crossbar (4), the lower surface of over cap (1) and the end face close contact of crossbar (4) form hermetically-sealed construction.
2. a kind of crossbar fender guard according to claim 1, is characterized in that: described polymer composite is nylon, polyurethane or polyethylene.
3. a kind of crossbar fender guard according to claim 1, is characterized in that: be provided with seal ring between the lower surface of described over cap (1) and the end face of crossbar (4), ring set is on stud (3).
4. a kind of crossbar fender guard according to claim 1, is characterized in that: the diameter ratio of described over cap (1) diameter, the circumscribed circle diameter of nut (2), stud (3) is (3 ~ 15): (2 ~ 9): (1 ~ 7).
5. a kind of crossbar fender guard according to claim 4; it is characterized in that: the diameter of described over cap (1) is 4 ~ 12cm; the circumscribed circle diameter of nut (2) is 2 ~ 6cm, and the diameter of stud (3) is 1.5 ~ 4cm.
6. a kind of crossbar fender guard according to claim 5, is characterized in that: the diameter of described over cap (1) is 10.5cm, and the circumscribed circle diameter of nut (2) is 4.2cm, and the diameter of stud (3) is 2.4cm.
7. a kind of crossbar fender guard according to claim 1, is characterized in that: the thickness of described over cap (1) is 0.5 ~ 4cm, and the thickness of nut (2) is 0.5 ~ 4cm, and the length of stud (3) is 1 ~ 10cm.
8. a kind of crossbar fender guard according to claim 7, is characterized in that: the thickness of described over cap (1) is 1cm, and the thickness of nut (2) is 2cm, and the length of stud (3) is 4cm.
9. a kind of crossbar fender guard according to claim 1, is characterized in that: described nut (2) is hexagonal (hexagon)nut.
10. a kind of crossbar fender guard according to claim 1; it is characterized in that: set up protection edge; protection is along the convex edge being the annular arrangement be fixedly connected with over cap (1) sidewall, and protection is 0.2 ~ 0.5cm along the height protruded in over cap (1) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410698208.5A CN104444172A (en) | 2014-11-27 | 2014-11-27 | Cross rod protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410698208.5A CN104444172A (en) | 2014-11-27 | 2014-11-27 | Cross rod protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104444172A true CN104444172A (en) | 2015-03-25 |
Family
ID=52891066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410698208.5A Pending CN104444172A (en) | 2014-11-27 | 2014-11-27 | Cross rod protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104444172A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259554A (en) * | 1991-09-13 | 1993-03-17 | Security Fasteners And Fixings | Anti-tamper cover for nut or bolthead |
| JP2000257623A (en) * | 1999-03-08 | 2000-09-19 | Mts Kk | Bolt removal preventing structure |
| CN200955544Y (en) * | 2006-08-10 | 2007-10-03 | 王有刚 | Screw cap protective sleeve |
| CN102353191A (en) * | 2011-09-02 | 2012-02-15 | 陈聪 | Dust-proof cover of liquid storage drier |
| CN104085419A (en) * | 2014-07-17 | 2014-10-08 | 南车二七车辆有限公司 | Cross rod end socket for railway wagon x-bracing bogie |
| CN203946108U (en) * | 2014-06-18 | 2014-11-19 | 南车二七车辆有限公司 | A kind of crossbar termination protective device |
| CN204341886U (en) * | 2014-11-27 | 2015-05-20 | 河北南车环保科技有限公司 | A kind of crossbar fender guard |
-
2014
- 2014-11-27 CN CN201410698208.5A patent/CN104444172A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2259554A (en) * | 1991-09-13 | 1993-03-17 | Security Fasteners And Fixings | Anti-tamper cover for nut or bolthead |
| JP2000257623A (en) * | 1999-03-08 | 2000-09-19 | Mts Kk | Bolt removal preventing structure |
| CN200955544Y (en) * | 2006-08-10 | 2007-10-03 | 王有刚 | Screw cap protective sleeve |
| CN102353191A (en) * | 2011-09-02 | 2012-02-15 | 陈聪 | Dust-proof cover of liquid storage drier |
| CN203946108U (en) * | 2014-06-18 | 2014-11-19 | 南车二七车辆有限公司 | A kind of crossbar termination protective device |
| CN104085419A (en) * | 2014-07-17 | 2014-10-08 | 南车二七车辆有限公司 | Cross rod end socket for railway wagon x-bracing bogie |
| CN204341886U (en) * | 2014-11-27 | 2015-05-20 | 河北南车环保科技有限公司 | A kind of crossbar fender guard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |