CN207079270U - Towing pin protection device - Google Patents
Towing pin protection device Download PDFInfo
- Publication number
- CN207079270U CN207079270U CN201721049127.8U CN201721049127U CN207079270U CN 207079270 U CN207079270 U CN 207079270U CN 201721049127 U CN201721049127 U CN 201721049127U CN 207079270 U CN207079270 U CN 207079270U
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- CN
- China
- Prior art keywords
- towing pin
- protection device
- protective cover
- internal protective
- towing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of towing pin protection device; including protective case; the inside of protective case is provided with interlayer; heat-insulating material is filled with the interlayer; protective case is removably set in the outside of the active section of towing pin; the inside of the protective case is provided with accommodation space, and the active section of towing pin is contained in the accommodation space, with the high temperature that isolation is extraneous.When towing pin protection device of the present utility model is set in the outside of towing pin active section; towing pin active section can be avoided to be contacted with galvanizing flux; ensure that towing pin will not be influenceed in vehicle galvanizing process by external high temperature; to ensure the overall structural strength of towing pin, and then ensure the bonding strength of trailer and tractor.
Description
Technical field
Technical field of vehicle is the utility model is related to, more particularly to a kind of towing pin protection device.
Background technology
Vehicle needs to carry out zinc-plated processing in car body surface in process of production, the oxidation of car body metal is prevented, to ensure
The stability of vehicle structure.The zinc-plated method that mainly uses in the surface of steel plate is galvanizing at present, caused height in galvanizing process
Temperature can reduce the intensity of vehicle towing pin.And towing pin is for connection to the important spare part of tractor and trailer, towing pin is strong
The reduction of degree can have a strong impact on the connection of tractor and trailer.
Utility model content
The intensity that the purpose of this utility model is to solve towing pin in the prior art is easily by zinc-plated caused high temperature shadow
The problem of ringing, and reducing tractor and trailer bonding strength.
In order to solve the above technical problems, the utility model provides a kind of towing pin protection device, including protective case, the guarantor
The inside of sheath is provided with interlayer, is filled with heat-insulating material in the interlayer, the protective case is removably set in the towing pin
Active section outside, the inside of the protective case is provided with accommodation space, and the active section of the towing pin is contained in the accommodation space
In, with the high temperature that isolation is extraneous.
Preferably, the protective case includes outer jointing jacket and internal protective cover, and the inside of the internal protective cover is provided with the appearance
Between being empty；The outer jointing jacket is set in the outside of the internal protective cover, and the interlayer is provided with the outer jointing jacket.
Preferably, the internal protective cover is with bottom face and top end opening, the tube structure of inner hollow, the interior guarantor
The hollow cavity of sheath forms the accommodation space, and the opening connects with the accommodation space.
Preferably, the pin-and-hole of supply and marketing axle insertion is offered in the side wall of the internal protective cover, the bearing pin inserts the pin
Hole is simultaneously connected on the active section of the towing pin.
Preferably, the outer jointing jacket includes shell body and the inner housing being arranged on inside the shell body, the shell
The interlayer is formed between body and the inner housing, the inside of the inner housing is provided with the accommodating cavity for disposing the internal protective cover.
Preferably, the shell body and the inner housing are the tube structure with bottom face and top end opening, described
The top of shell body is concordant with the top of the inner housing and inside and outside housing tip between be connected with top sealing plate.
Preferably, multiple leakage holes are offered on the top sealing plate.
Preferably, in addition to fastening bolt, the outer jointing jacket are screwed onto the internal protective cover by the fastening bolt
Outside, the axis of the fastening bolt are vertical with the top sealing plate.
Preferably, a circular hole, institute are opened up on the center of the shell body bottom face and the inner housing bottom face
The circular hole stated on shell body is connected with the circular hole on the inner housing by a connector drum；The bottom of the internal protective cover is provided with
The screwed hole connected with the connector drum, the fastening bolt are screwed onto the screw thread of the internal protective cover through the connector drum
Kong Zhong.
Preferably, the heat-insulating material is asbestos.
As shown from the above technical solution, the beneficial effects of the utility model are：
When towing pin protection device of the present utility model is set in the outside of towing pin active section, towing pin can be avoided to work
Section contacts with galvanizing flux, ensures that towing pin will not be influenceed in vehicle galvanizing process by external high temperature, to ensure towing pin
Overall structural strength, and then ensure the bonding strength of trailer and tractor.
Brief description of the drawings
Fig. 1 is the structural representation of towing pin in the prior art.
Fig. 2 is the structural representation of the utility model towing pin protection device embodiment.
Fig. 3 is the use state diagram of the utility model towing pin protection device embodiment.
Description of reference numerals is as follows：1st, towing pin；11st, cap body section；12nd, active section；121st, linkage section；122nd, path section；
123rd, convex cap section；124th, groove；2nd, towing plate；3rd, towing pin protection device；31st, protective case；311st, internal protective cover；312nd, outer guarantor
Sheath；3121st, shell body；3122nd, inner housing；3123rd, top sealing plate；3124th, leakage hole；3125th, connector drum；3126th, screw thread
Hole；32nd, interlayer；33rd, heat-insulating material；34th, accommodation space；35th, fastening bolt；4th, bearing pin.
Embodiment
Embodying the exemplary embodiment of the utility model features and advantages will describe in detail in the following description.It should be understood that
Be that the utility model can have various changes in different embodiments, it does not all depart from model of the present utility model
Enclose, and explanation therein and diagram are treated as purposes of discussion in itself, and be not used to limit the utility model.
In order to further illustrate principle and structure of the present utility model, it is preferable to carry out in conjunction with accompanying drawing to of the present utility model
Example is described in detail.
For needs described below, the structure of towing pin in the prior art is simply introduced first.Refering to Fig. 1, lead
Drawing pin 1 includes the cap body section 11 of upper end and is connected to the active section 12 of the lower end of cap body section 11.When towing pin 1 assembles with towing plate 2,
Cap body section 11 is located at the top of towing plate 2, and active section 12 is located at the lower section of towing plate 2.
The entirety of active section 12 is in I-shaped, and it includes linkage section 121, path section 122 and the convex cap section being sequentially connected
123.Its middle connecting segment 121 is fixedly connected on the bottom of cap body section 11, and path section 122 is used for and the connection component phase on tractor
Even.Linkage section 121 and the diameter of convex cap section 123 are all higher than the diameter of path section 122, thus can shape in the side wall of active section 12
Into a groove 124 circumferentially.
Refering to Fig. 2 and Fig. 3, the present embodiment provides a kind of towing pin protection device 3, and it is set in the active section 12 of towing pin 1
Outside, ensure that towing pin 1 will not be influenceed in vehicle galvanizing process by external high temperature, to ensure that towing pin 1 is overall
Structural strength, and then ensure the bonding strength of trailer and tractor.
Specifically, towing pin protection device 3 includes protective case 31, and the inside of protective case 31 is provided with interlayer 32, in interlayer 32
Filled with heat-insulating material 33, the heat-insulating material 33 in the present embodiment generally selects asbestos.The protective case 31 is removably set in
The outside of the active section 12 of towing pin 1, the inside of protective case 31 are provided with accommodation space 34, and the active section 12 of towing pin 1 is contained in
In the accommodation space 34.
When vehicle needs zinc-plated, protective case 31 can be socketed in the outside of active section 12, active section 12 is contained in guarantor
In the accommodation space 34 of sheath 31.The heat-barrier material in the interlayer 32 of protective case 31 can completely cut off the high temperature in the external world simultaneously, make towing pin 1
Active section 12 it is not affected by the high temperature.After the completion for the treatment of zinc-plated operation, under can directly protective case 31 be dismantled from towing pin 1
Come, the structure of towing pin 1 and vehicle in itself will not be destroyed.
Further, outer jointing jacket 312 and internal protective cover 311 are included refering to Fig. 2, the protective case 31 of the present embodiment.Interior guarantor
The inside of sheath 311 is provided with accommodation space 34, for the active section 12 of towing pin 1 is encased.In outer jointing jacket 312 is set in
The outside of protective case 311, contact of the galvanizing flux with internal protective cover 311 and towing pin 1 can be prevented.Set in the outer jointing jacket 312
There is the interlayer 32 filled with heat-insulating material 33, for the high temperature that isolation is extraneous.
Specifically, in the present embodiment, internal protective cover 311 is the tube structure with bottom face, the tube structure top
Opening and inner hollow.The hollow cavity of internal protective cover 311 forms the accommodation space 34 for housing the active section 12 of towing pin 1,
The opening on the top of internal protective cover 311 connects with the accommodation space 34.
When the internal protective cover 311 of the present embodiment is socketed with towing pin 1, the opening direction of internal protective cover 311 and alignment are led
Draw the bottom of pin 1, while promote internal protective cover 311 from bottom to top, until the active section 12 of towing pin 1 is contained in accommodation space 34
In.In the present embodiment, the outer surface of the inwall and the active section 12 of towing pin 1 of internal protective cover 311 fits.
In addition, the pin-and-hole of the insertion of supply and marketing axle 4 is offered in the side wall of the internal protective cover 311 of the present embodiment.Pin-and-hole cloth in groups
Put on internal protective cover 311, every group of pin-and-hole group includes two pin-and-holes being oppositely arranged.On the internal protective cover 311 of the present embodiment altogether
Provided with two groups of pin-and-hole groups, the corresponding bearing pin 4 of every group of pin-and-hole group.
When internal protective cover 311 is socketed on the active section 12 of towing pin 1, pin-and-hole alignment and traction on internal protective cover 311
The groove 124 of the periphery of path section 122 of the active section 12 of pin 1.When in two opposing pin bores of corresponding insertion of bearing pin 4, bearing pin 4 can simultaneously
By the groove 124 on the outer wall of active section 12 and it is connected in the convex cap section 123 of the bottom of towing pin 1, so that internal protective cover 311
Removably it is installed on the outside of the active section 12 of towing pin 1.When needing to remove internal protective cover 311 from towing pin 1, only need
Bearing pin 4 is exited from pin-and-hole.
Referring still to Fig. 2 and Fig. 3, the outer jointing jacket 312 of the present embodiment includes shell body 3121 and inner housing 3122, inner casing
Body 3122 is arranged on inside shell body 3121, and the inside of inner housing 3122 is provided with the accommodating cavity of placement internal protective cover 311.Wherein,
Shell body 3121 and inner housing 3122 are the tube structure with bottom face and top end opening, the top of shell body 3121 with it is interior
The top of housing 3122 is concordant and inside and outside housing (3122,3121) top between be connected with top sealing plate 3123.
When the outer jointing jacket 312 of the present embodiment is socketed with internal protective cover 311, by the opening direction of inner housing 3122 and it is aligned
The bottom of internal protective cover 311, while outer jointing jacket 312 is promoted from bottom to top, internal protective cover 311 is contained in inner housing 3122
In accommodating cavity, and top sealing plate 3123 is set to be connected to the lower surface of towing plate 2.In the present embodiment, the inwall of inner housing 3122 with
The outer surface of internal protective cover 311 fits.
Further, the interlayer 32 for filling heat insulator 33 is formed between shell body 3121 and inner housing 3122.Interior,
On the one hand the top sealing plate 3123 on shell body (3122,3121) top can prevent spilling for heat-insulating material 33, on the other hand can also keep off
Only galvanizing flux enters in interlayer 32, avoids it from destroying the heat-insulating property of interlayer 32.
It is preferred that multiple leakage holes 3124, the top sealing plate of outer jointing jacket 312 are offered on the top sealing plate 3123 of the present embodiment
3123 are connected to the lower surface of towing plate 2 in assembling so that and towing plate 2 can form certain closure to leakage hole 3124, from
And avoid having the galvanizing flux of liquid tension from being entered by leakage hole 3124 in interlayer 32.And the temperature in galvanizing process is higher,
High temperature can make to produce vapor in interlayer 32, although towing plate 2 can produce certain closure to leakage hole 3124, due to vapor
Pressure it is larger, remain able to escape through leakage hole 3124, so as to avoid the danger exploded.
In addition, as shown in Figures 2 and 3, the towing pin protection device 3 of the present embodiment also includes fastening bolt 35, outer protection
Set 312 is screwed onto the outside of internal protective cover 311 by the fastening bolt 35.
In the present embodiment, the axis of fastening bolt 35 is vertical with top sealing plate 3123.Thus can be by gradually tightening fastening
Bolt 35, outer jointing jacket 312 is set progressively mutually to boost, so as to ensure that the lower surface of top sealing plate 3123 and towing plate 2 is closely pasted
Close, it is ensured that interlayer 32 seals, and avoids galvanizing flux from entering interlayer 32 by leakage hole 3124 and damage heat-insulating material 33.
Specifically, a circular hole is opened up on the center of the bottom face of shell body 3121 and the bottom face of inner housing 3122, outside
Circular hole on housing 3121 is connected with the circular hole on inner housing 3122 by a connector drum 3125, to ensure inside and outside housing
Sealing at (3122,3121) circular hole, avoids heat-insulating material 33 from being corroded by galvanizing flux.
Further, the bottom of internal protective cover 311 is provided with the screwed hole 3126 connected with connector drum 3125, fastening bolt
35 are screwed onto in the screwed hole 3126 of internal protective cover 311 through connector drum 3125, so that outer jointing jacket 312 is fixed on interior protection
The outside of set 311.
When the car body of trailer needs zinc-plated, first internal protective cover 311 is set on the active section 12 of towing pin 1, is used in combination
Bearing pin 4 is fixed；Outer jointing jacket 312 is socketed in the outside of internal protective cover 311 again, and is spirally connected fixation with fastening bolt 35, so as to
The entirety of active section 12 of towing pin 1 is encased, with the high temperature that isolation is extraneous.After the completion for the treatment of zinc-plated operation, fastening bolt 35 is twisted
Descend and exit bearing pin 4, and towing pin protection device 3 can be disassembled.
In addition, in some other preferably embodiment, towing pin protection device is only included to be set in towing pin work
Make the outer jointing jacket outside section.Interlayer is provided with outer jointing jacket, heat-insulating material is filled with interlayer.The outer jointing jacket be provided with
Identical pin-and-hole on internal protective cover in above-described embodiment, coordinated by bearing pin and pin-and-hole to make outer jointing jacket be socketed in towing pin
On.When in use, pin-and-hole waterproof paster or mackintosh made of heat-insulating material touch the towing pin protection device of the present embodiment,
To prevent extraneous galvanizing flux from being penetrated into by pin-and-hole.
Although describing the utility model with reference to several exemplary embodiments, it is to be understood that, term used is to say
Bright and exemplary and nonrestrictive term.Because the utility model can be embodied without departing from practicality in a variety of forms
New is spiritual or substantive, it should therefore be appreciated that above-mentioned embodiment is not limited to any foregoing details, and should be in right of enclosing
It is required that widely explained in the spirit and scope limited, thus whole changes for falling into claim or its equivalent scope and
Remodeling all should be appended claims and be covered.
Claims (10)
1. a kind of towing pin protection device, it is characterised in that including protective case, the inside of the protective case is provided with interlayer, the folder
Heat-insulating material is filled with layer, the protective case is removably set in the outside of the active section of the towing pin, the protective case
Inside be provided with accommodation space, the active section of the towing pin is contained in the accommodation space, with the high temperature that isolation is extraneous.
2. towing pin protection device according to claim 1, it is characterised in that the protective case includes outer jointing jacket and interior
Protective case, the inside of the internal protective cover are provided with the accommodation space；The outer jointing jacket is set in the outer of the internal protective cover
Portion, the interlayer is provided with the outer jointing jacket.
3. towing pin protection device according to claim 2, it is characterised in that the internal protective cover be with bottom face and
The tube structure of top end opening, inner hollow, the hollow cavity of the internal protective cover form the accommodation space, the opening with
The accommodation space connection.
4. towing pin protection device according to claim 2, it is characterised in that offered in the side wall of the internal protective cover
The pin-and-hole of supply and marketing axle insertion, the bearing pin insert the pin-and-hole and are connected on the active section of the towing pin.
5. towing pin protection device according to claim 2, it is characterised in that the outer jointing jacket includes shell body and set
The inner housing inside the shell body is put, the interlayer, the inner housing are formed between the shell body and the inner housing
Inside be provided with the accommodating cavity for disposing the internal protective cover.
6. towing pin protection device according to claim 5, it is characterised in that the shell body and the inner housing are
Tube structure with bottom face and top end opening, the top of the shell body are concordant and inside and outside with the top of the inner housing
Top sealing plate is connected between housing tip.
7. towing pin protection device according to claim 6, it is characterised in that multiple gas leakage are offered on the top sealing plate
Hole.
8. towing pin protection device according to claim 6, it is characterised in that also including fastening bolt, the outer protection
Set is screwed onto the outside of the internal protective cover by the fastening bolt, and the axis of the fastening bolt is vertical with the top sealing plate.
9. towing pin protection device according to claim 8, it is characterised in that the shell body bottom face and the inner casing
Open up a circular hole on the center of body bottom face, the circular hole on the shell body passes through one with the circular hole on the inner housing
Connector drum is connected；The bottom of the internal protective cover is provided with the screwed hole connected with the connector drum, the fastening bolt warp
The connector drum is screwed onto in the screwed hole of the internal protective cover.
10. towing pin protection device according to claim 1, it is characterised in that the heat-insulating material is asbestos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721049127.8U CN207079270U (en) | 2017-08-18 | 2017-08-18 | Towing pin protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721049127.8U CN207079270U (en) | 2017-08-18 | 2017-08-18 | Towing pin protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207079270U true CN207079270U (en) | 2018-03-09 |
Family
ID=61420497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721049127.8U Active CN207079270U (en) | 2017-08-18 | 2017-08-18 | Towing pin protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207079270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402545A (en) * | 2017-08-18 | 2019-03-01 | 东莞中集专用车有限公司 | Towing pin protective device |
| CN112533779A (en) * | 2018-08-07 | 2021-03-19 | 汉堡专利锻造有限公司 | Dirt-repellent cover assembly and dirt-repellent cover device for such an assembly |
-
2017
- 2017-08-18 CN CN201721049127.8U patent/CN207079270U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109402545A (en) * | 2017-08-18 | 2019-03-01 | 东莞中集专用车有限公司 | Towing pin protective device |
| CN109402545B (en) * | 2017-08-18 | 2024-04-12 | 东莞中集专用车有限公司 | Traction pin protection device |
| CN112533779A (en) * | 2018-08-07 | 2021-03-19 | 汉堡专利锻造有限公司 | Dirt-repellent cover assembly and dirt-repellent cover device for such an assembly |
| CN112533779B (en) * | 2018-08-07 | 2023-07-07 | 汉堡专利锻造有限公司 | Antifouling cover assembly and antifouling cover device for the same |
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