CN105329054B - A kind of towing pin - Google Patents
A kind of towing pin Download PDFInfo
- Publication number
- CN105329054B CN105329054B CN201510847684.3A CN201510847684A CN105329054B CN 105329054 B CN105329054 B CN 105329054B CN 201510847684 A CN201510847684 A CN 201510847684A CN 105329054 B CN105329054 B CN 105329054B
- Authority
- CN
- China
- Prior art keywords
- hole
- shaft
- shaft part
- buckling groove
- bearing pin
- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/24—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
- B60D1/28—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for preventing unwanted disengagement, e.g. safety appliances
Abstract
The present invention provides a kind of towing pin, including open up the bearing pin of elongated hole, in insertion elongated hole and relative pin slide control shaft；The top of bearing pin is with first through hole, bottom with the second through hole；Control shaft has thin shaft part, thick shaft part and the bevel phase for connecting thin shaft part and thick shaft part；Thick shaft part also has the first buckling groove and the second buckling groove；Stop collar, inner side with fixed installation in second through hole is with limit shaft and the first compression elastic piece；Stop collar outer end also has the via that limit shaft passes through；When shackle member and the first buckling groove coordinate, limit shaft pushes against thin shaft part and is entirely located in the second through hole；When shackle member and the second buckling groove coordinate, limit shaft pushes against thick shaft part or bevel phase and bearing pin is stretched out in free end through via.When shackle member changes cooperation between the first buckling groove and the second buckling groove, control shaft makes thick shaft part and thin shaft part relative to pin slide, and limited location axle coordinates, realizes the spacing and spacing releasing of limit shaft respectively, convenient to use.
Description
Technical field
The present invention relates to drawbar trailer technical field, more particularly to a kind of towing pin.
Background technology
Towing pin is the bolt device of the draw bar and trailer that connect tractor.According to insertion traction seat after whether pass through limit
Position device is spacing (can not extracting towing pin from traction seat if not untiing stopping means after installation), and towing pin is divided into spacing
Type towing pin and not spacing-type towing pin.To ensure the security in distraction procedure, existing towing pin is drawn using spacing-type more
Pin.
ZL20142072039.1 describes a kind of anti-explosion towing vehicle and its explosion-proof draw-gear, is wherein set on towing pin
One small spacer pin, spacing pipe is set on traction seat, spacing pipe is provided with Z-type guide groove；When towing pin inserts by leading
Insert spacing pipe above introduction, at the same Z-type guide groove of the small spacer pin on pipe realize on earth it is spacing.Such as disconnection is needed to lead
Draw the connection of car and trailer, opposite direction rotates Z-type guide groove while lifting towing pin.This towing pin has preferable
Anti-drop function, occupancy traction seat underlying space are small, but its needs welds pipe stop collar on tractor and trailer.By
May not be same manufacturer's production in tractor and trailer, the supporting difficulty of towing pin is larger, and actual use is restricted.
ZL201120113857.6 describes another self-locking safety anti-explosion traction pin, and bullet is set below this towing pin
Spring, small spacing bearing pin and limited block；When towing pin inserts traction seat, limited block is parallel with small spacer pin direction of principal axis；It is fully-inserted
The limited block of lower section is overturn to level afterwards, played spacing due to that can remain horizontal in the position-limiting action limited block of spring
Effect；Need to disconnect tractor and during trailer, external force effect makes limited block overturn to vertically again extracting towing pin upwards.
The towing pin of this structure is spacing also more reliable, but due to needing to overturn limited block to occupancy traction vertically when extracting
Seat space required below is larger, causes some tractors not use；Operator is also needed to when such towing pin is extracted in addition
Member, which squats down, releases the spacing of limited block, and operation is inconvenient.
In summary, a kind of simple in construction, but spacing reliable, installation plug convenience towing pin how is designed, is mesh
Preceding those skilled in the art's urgent problem.
The content of the invention
This uses a kind of towing pin of new construction of new offer, can realize and quickly and easily plug spacing operation.
The present invention provides a kind of towing pin, including opens up the bearing pin of elongated hole vertically, in the insertion elongated hole and relative institute
State the control shaft of pin slide；
First through hole that the top of the bearing pin connects with positive stop lug boss and with the elongated hole, bottom with the length
Second through hole of hole connection；
The control shaft has thin shaft part, thick shaft part and the bevel phase of the connection thin shaft part and the thick shaft part；It is described
Thick shaft part also has the first buckling groove and the second buckling groove；
There is shackle member at the first through hole；The outer end of second through hole has the stop collar being fixedly mounted, inner side
With the limit shaft along the second through hole axial direction activity and positioned at the stop collar and the spacing between centers and make institute
State the first compression elastic piece that limit shaft pushes against the control shaft；The stop collar outer end also has the mistake that the limit shaft passes through
Hole；
When the shackle member and first buckling groove coordinate, the limit shaft pushes against the thin shaft part and is entirely located in
In second through hole；When the shackle member and the second buckling groove coordinate, the limit shaft pushes against the thick shaft part or described
The bearing pin is stretched out in bevel phase and free end through the via.
Optionally, the shackle member include be fixed on the first through hole outer end plug, along the first through hole axial direction
The spacing ball of direction activity, positioned at the second pressure stated between spacing ball and the plug and make the spacing ball push against the control shaft
Contracting elastic component；The spacing ball is absorbed in first buckling groove and the depth of second buckling groove is respectively less than its radius.
Optionally, the end face that the limit shaft pushes against the control shaft is taper surface.
Optionally, along the axial direction of the bearing pin, the first through hole is located at the positive stop lug boss and described second and led to
Between hole；The plug is located in the first through hole.
Optionally, the free end of the thin shaft part also has the limiting plate that sectional dimension is less than the bearing pin sectional dimension.
Optionally, there are two second through holes on the bearing pin；Be respectively provided with two second through holes it is corresponding into
The limit shaft, the stop collar and first compression elastic piece of set.
Optionally, the spacing ball is spacing ball made of metal material.
Optionally, the free end of the thick shaft part also has the drop handle being fixedly connected.
Optionally, the drop handle and the thick shaft part threaded connection.
Optionally, the upper end of the bearing pin also has the rotation ear being fixedly connected.
Towing pin provided by the invention is divided into bearing pin and control shaft, and the upper end of bearing pin has spacing first through hole, lower end tool
There is the second through hole, control shaft lower end is with thin shaft part and thick shaft part and thick shaft part with fixing it relative to the of bearing pin position
One buckling groove and the second buckling groove, the second through hole are interior spacing with that can be moved in the presence of a tensile force relative to the second through hole
Axle；When the shackle member in first through hole changes cooperation between the first buckling groove and the second buckling groove, control shaft is relative to pin
Axle slides and makes thick shaft part and thin shaft part limited location axle coordinates, realizes the spacing and spacing releasing of limit shaft respectively.Due to this
It is spacing to be realized by towing pin internal structure, and position limiting structure is located on the upside of towing pin, it is convenient to use.
In the embodiment of the invention, shackle member is the spacing ball and corresponding second compression positioned at thick shaft part
Elastic component, and the radius of spacing ball is more than the depth that can be deep into the first buckling groove and the second buckling groove, is controlled by axially pulling
Axle processed achieves that the replacing of the spacing state of towing pin, even more convenient actual use.
In the embodiment of the invention, the thin shaft part free end in control shaft sets limiting plate, can prevent from drawing
Control shaft is pulled off bearing pin when dynamic control shaft releases spacing.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the schematic cross-section of the spacing releasing state of specific embodiment of the invention towing pin；
Fig. 2 is the schematic cross-section of the spacing state of specific embodiment of the invention towing pin；
Wherein：1- bearing pins, 11- positive stop lug boss, 12- first through hole, the through holes of 13- second, 2- control shafts, the thin shaft parts of 21-,
The thick shaft parts of 22-, 23- bevel phases, the buckling grooves of 24- first, the buckling grooves of 25- second, 3- stop collars, 4- limit shafts, 5- first compress
Elastic component, 6- plugs, 7- spacing balls, the compression elastic pieces of 8- second, 9- limiting plates, 10- drop handles, 11- rotations ear, 13- traction seats.
Embodiment
Towing pin provided by the invention, spacing clamping of the towing pin on traction seat is achieved that by top push-and-pull operation
With release it is spacing, reduce towing pin lower length, greatly improve ease of use and property swift to operate.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1 is the schematic cross-section of the spacing releasing state of specific embodiment of the invention towing pin, and Fig. 2 is specific for the present invention
The schematic cross-section of the spacing state of embodiment towing pin；It can be seen that with reference to Fig. 1 and Fig. 2, in the specific embodiment of the invention
Towing pin includes bearing pin 1,2 liang of big main parts of control shaft and other counterparts.
Wherein bearing pin 1 offers elongated hole in the axial direction, and control shaft 2 can be plugged into elongated hole；The top tool of another bearing pin 1
Limited location boss 11 and the first through hole 12 connected with elongated hole, bottom have the second through hole 13 connected with elongated hole.Inserting
Exactly positive stop lug boss 11 plays the corresponding effect guarantee bearing pin 1 that connects and fixes and can be arranged on traction seat 13 after on to traction seat 13
Through hole in.First through hole 12 is used to install the shackle member for being relatively fixed bearing pin 1 and control shaft 2, and the second through hole 13 is used to install
Produce the locating part of position-limiting action.
Control shaft 2 has the thin shaft part 21 positioned at downside, the thick shaft part 22 positioned at upside and connects thin shaft part 21 and thick axle
The bevel phase 23 of section 22, another thick shaft part 22 also have the first buckling groove 24 and the second buckling groove 25；Shackle member is connected to the first card
Towing pin is set to be in spacing releasing state and spacing state when in the buckling groove 25 of access slot 24 and second respectively.
It is specifically, logical with pressure second with the stop collar 3, inner side being fixedly mounted in the outer end of the second through hole 13 of bearing pin 1
The limit shaft 4 of the axial movement of hole 13, both ends connect stop collar 3 and limit shaft 4 and the medial extremity of limit shaft 4 is pushed against control respectively
First compression elastic piece 5 of axle 2；Also there is the via that may pass through limit shaft 4 in the outer end of stop collar 3；
When shackle member and the first buckling groove 24 are engaged by clamping, elastic recoil power of the limit shaft 4 in the first compression elastic piece 5
The thin shaft part 21 of control shaft 2 is pushed against under effect；Now, the free end of limit shaft 4 does not have the outside for reaching bearing pin 1, because
This whole bearing pin 1 is in released state；
And when control shaft 2 moves down relative to bearing pin 1 and shackle member is engaged by clamping with the second buckling groove 25, it is corresponding thick
Shaft part 22 or bevel phase 23, which push against with limit shaft 4 and extrude the first compression elastic piece 5, to be compressed so that limit shaft 4 passes through stop collar 3
Via stretch out bearing pin 1；As shown in Fig. 2 because the sectional dimension of general bearing pin 1 is identical with the sectional dimension of traction seat 13, limit
Position axle 4 can play corresponding spacing clamping effect after stretching out.
Such as Fig. 1 and Fig. 2, the mode that the embodiment of the invention employs elastic component compression spacing ball 7 realizes clamping.
Specifically, shackle member includes being fixedly mounted on the plug 6 of the outer end of first through hole 12, positioned at the inner side of first through hole 12
Spacing ball 7 and the second compression elastic piece 8 between spacing ball 7 and plug 6；First compression elastic piece 5 pushes against spacing ball 7
In control shaft 2, and spacing ball 7 is absorbed in the first buckling groove 24 and the depth of the second buckling groove 25 is respectively less than its radius.
After towing pin is arranged on traction seat 13, control shaft 2 is pressed under exerting oneself, the first buckling groove 24 extruding spacing ball 7 moves
Move to control shaft 2 can be moved down in first through hole 12, subsequent bevel phase 23 and the extruding limit shaft 4 of thick shaft part 22 and
So that the first compression elastic piece 5 compresses, limit shaft 4 moves axially outward along the second through hole 13 and stretches out bearing pin 1；When the second clamping
When groove 25 is directed at first through hole 12, recoils in the second buckling groove 25 in the second compression elastic piece 8 effect lower limit ball 7 and limit again
The fixed control shaft 2 in position；It is spacing that such towing pin by limit shaft 4 realizes clamping；Such as without sufficiently large external force driving bearing pin 1
It is entirely spacing to be released from the disengaging campaign of control shaft 2.
It is opposite, during if desired for releasing spacing, ensure bearing pin 1 it is motionless and it is relatively outer draw control shaft 2, due to the second buckling groove
25 extruding spacing balls 7 be moved in first through hole 12 move and so that control shaft 2 can move up, the control contacted with limit shaft 2
Axle processed is changed into thin shaft part from thick shaft part 22 or changeover portion 23, and is recoiled in the elastic reaction limit shaft 4 of the first compression elastic piece 5
Released spacing in two through holes 13；Subsequent first buckling groove 24 is directed at first through hole 12, and lower limit is acted in the second compression elastic piece 8
Position ball 7 recoils in the first buckling groove 24 and fixed control shaft 2.
It should be noted that in being operated more than, formal spacing ball 2 is absorbed in the depth of the first buckling groove 24 and the second buckling groove 25
Radius less than spacing ball 7 just enables two grooves to promote spacing ball 7 to be moved along first through hole 12；In processing, two grooves
Width can be more than the diameter of spacing ball, also be smaller than the diameter of spacing ball；Separately it should be noted that above-mentioned first compression bullet
The property compression elastic piece 8 of part 5 and second can be relatively conventional extension spring, or the other types spring such as disc spring, as long as it can
Enough elasticity of compression power is provided.In addition, to ensure the service life of spacing ball 7, it is preferably made of metal material
Spacing ball 7.
In the specific embodiment of the invention, plug 6 can be arranged on the realization of the outer end of first through hole 12 by thread fiting mode and be squeezed
The function of the second compression elastic piece 8 and spacing ball 7 is pressed, such connected mode has dismountable advantage；Certainly have at other
In body embodiment, can also it use welding etc. is non-removable to be fixedly connected with mode.
It can be seen that from Fig. 1 and Fig. 2, because first through hole 12 is located between the through hole 13 of positive stop lug boss 11 and second of bearing pin 1,
First through hole 12 is blocked by traction seat 13 after towing pin namely is arranged on into traction seat 13, to ensure that towing pin can be preferable
Pick and place without interfering with traction seat 13, plug 6 should be located in first through hole 12；Certainly, as first through hole 12 is arranged on limit convex
First through hole 12 is not blocked by traction seat 13 behind the upside of platform 11, that is, towing pin and the cooperation installation of traction seat 13, and plug 6 also may be used
Protrude from first through hole 12；It is contemplated that such as first through hole 12 is located at the upside of positive stop lug boss 11, other kinds of card can be also used
Fitting coordinates with the first buckling groove 24 and the second buckling groove 25, however it is not limited to the card that foregoing plug 6 and spacing ball 7 coordinate
Connect position limiting structure.
In the specific embodiment of the invention, stop collar 3 can be arranged in the second through hole 13 by the way of interference fit,
It can be arranged on by the way of welding or threaded connection in the second through hole 13；The end face that limit shaft 4 coordinates with control shaft 2 can be set
Tapered face, ensure between limit shaft 4 and control shaft 2 relative to slip and the two moved along corresponding axial direction；Certainly, exist
Also the shaft part of limit shaft 4 can be arranged to spherical or other shapes in other concrete applications.
In practical application, to prevent from the pull of control shaft 2 departing from bearing pin 1, it can also be installed in the free end of control shaft 2 spacing
Plate 9；The sectional dimension of limiting plate 9 at least should be greater than the sectional dimension of thin shaft part 21, and guarantee can be limited axle 4 and block；It is more excellent
Choosing, the sectional dimension of limiting plate 9 can be more than the sectional dimension of via, and such limiting plate 9 is just directly clamped among the lower end of bearing pin 1；
It should be noted that the largest cross-sectional sized of limiting plate 9 can not be more than the sectional dimension of bearing pin 1, prevent from influenceing towing pin in traction seat
Normal plug on 13.
Such as accompanying drawing, the bearing pin 1 in accompanying drawing embodiment of the present invention has two the second through holes 13, two the second through holes 13
In on same straight line and respectively with corresponding limit shaft 4, the compression elastic piece 5 of stop collar 3 and first.In the manufacturing process of bearing pin 1,
Two directly disposable drillings of the second through hole 13 form more convenient.Certainly, also can be according to actual need in other concrete applications
Seek the second through hole 13 that other quantity is set.
For convenience of the plug of control shaft 2, in the embodiment that accompanying drawing provides, the upper end of control shaft 2 is (namely thick
The free end of shaft part 22) drop handle 10 being fixedly connected is also set up, drop handle 10 can be threadedly coupled, also directly weld with control shaft 2
Connect.It is contemplated that the dismounting of whole control shaft 2 and bearing pin 1 can be facilitated using thread connecting mode, to change spacing ball 7,
The operation of one compression elastic piece 5, the second compression elastic piece 8.Equally, it is also solid in the upper end of bearing pin 1 for convenience of the plug of towing pin
Surely it is connected with rotation ear 11.
The towing pin in the embodiment of the present invention is described in detail above.Specific case is applied herein to the present invention
Principle and embodiment be set forth, the explanation of above example is only intended to help the core concept for understanding the present invention,
Without departing from the principles of the present invention, some improvement and modification can be also carried out to the present invention, these are improved and modification also falls
Enter in protection scope of the present invention.
Claims (9)
- A kind of 1. towing pin, it is characterised in that：Bearing pin (1), the insertion elongated hole including opening up elongated hole vertically are interior and relative The control shaft (2) that the bearing pin (1) is slided；The top of the bearing pin (1) with positive stop lug boss (11) and the first through hole (12) connected with the elongated hole, bottom with The second through hole (13) connected with the elongated hole；The control shaft (2) has thin shaft part (21), thick shaft part (22) and the connection thin shaft part (21) and the thick shaft part (22) bevel phase (23)；The thick shaft part (22) also has the first buckling groove (24) and the second buckling groove (25)；First through hole (12) place has shackle member；The outer end of second through hole (13) has the stop collar being fixedly mounted (3), inner side have along the limit shaft (4) of the second through hole (13) axial direction activity and positioned at the stop collar (3) and Between the limit shaft (4) and the limit shaft (4) is set to push against the first compression elastic piece (5) of the control shaft (2)；It is described spacing Set (3) outer end also has the via that the limit shaft (4) passes through；Along the axial direction of the bearing pin (1), the first through hole (12) between the positive stop lug boss (11) and second through hole (13)；The free end of the thin shaft part (21), which also has, to be cut Face size is less than the limiting plate (9) of the bearing pin (1) sectional dimension；When the shackle member and first buckling groove (24) coordinate, the limit shaft (4) pushes against the thin shaft part (21) simultaneously It is entirely located in second through hole (13)；When the shackle member and the second buckling groove (25) coordinate, the limit shaft (4) is supported The tight thick shaft part (22) or the bevel phase (23) and the bearing pin (1) is stretched out in free end through the via.
- 2. towing pin according to claim 1, it is characterised in that：The shackle member includes being fixed on the first through hole (12) plug (6) of outer end, along the first through hole (12) axial direction activity spacing ball (7), positioned at state spacing ball (7) and Between the plug (6) and the spacing ball (7) is set to push against the second compression elastic piece (8) of the control shaft (2)；The spacing ball (7) depth for being absorbed in first buckling groove (24) and second buckling groove (25) is respectively less than its radius.
- 3. towing pin according to claim 1 or 2, it is characterised in that：The limit shaft (4) pushes against the control shaft (2) End face be taper surface.
- 4. towing pin according to claim 3, it is characterised in that：The plug (6) is located in the first through hole (12).
- 5. towing pin according to claim 4, it is characterised in that：There are two second through holes on the bearing pin (1) (13)；The corresponding set of limit shaft (4), the stop collar (3) and described are respectively provided with two second through holes (13) First compression elastic piece (5).
- 6. towing pin according to claim 5, it is characterised in that：The spacing ball (7) is spacing made of metal material Ball (7).
- 7. towing pin according to claim 6, it is characterised in that：The free end of the thick shaft part (22) also has fixed connect The drop handle (10) connect.
- 8. towing pin according to claim 7, it is characterised in that：The drop handle (10) and described thick shaft part (22) screw thread connect Connect.
- 9. towing pin according to claim 8, it is characterised in that：The upper end of the bearing pin (1) also has what is be fixedly connected Revolve ear (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847684.3A CN105329054B (en) | 2015-11-27 | 2015-11-27 | A kind of towing pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847684.3A CN105329054B (en) | 2015-11-27 | 2015-11-27 | A kind of towing pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105329054A CN105329054A (en) | 2016-02-17 |
| CN105329054B true CN105329054B (en) | 2018-01-19 |
Family
ID=55279910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510847684.3A Active CN105329054B (en) | 2015-11-27 | 2015-11-27 | A kind of towing pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105329054B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733785B (en) * | 2018-12-26 | 2021-09-07 | 亚杰科技（江苏）有限公司 | Logistics trolley tractor |
| CN109733784B (en) * | 2018-12-26 | 2020-12-22 | 亚杰科技（江苏）有限公司 | Double-hook logistics mover |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1630585B2 (en) * | 1967-04-22 | 1975-04-24 | Kloeckner-Humboldt-Deutz Ag, 5000 Koeln | Securing device for the coupling pin of a trailer coupling |
| EP0499908B1 (en) * | 1991-02-16 | 1995-09-06 | DIEHL GMBH & CO. | Anti-coupling device for the king pin of a semi-trailer coupling |
| US6193261B1 (en) * | 1999-09-22 | 2001-02-27 | Duane E. Hahka | Quick release hitch pin |
| CN2447198Y (en) * | 2000-04-16 | 2001-09-12 | 张国学 | Self-locking traction pin |
| EP1197357A1 (en) * | 2000-10-12 | 2002-04-17 | ORIS FAHRZEUGTEILE HANS RIEHLE GmbH | Trailer coupling |
| RU2293661C1 (en) * | 2005-12-12 | 2007-02-20 | Государственное образовательное учреждение высшего профессионального образования "Елецкий государственный университет им. И.А. Бунина" | Trailer-train draw-and-coupled gear |
| CN201872552U (en) * | 2010-12-08 | 2011-06-22 | 陕西重型汽车有限公司 | Locking device for traction pin of vehicle |
| CN205220250U (en) * | 2015-11-27 | 2016-05-11 | 衡阳合力工业车辆有限公司 | Towing pin |
-
2015
- 2015-11-27 CN CN201510847684.3A patent/CN105329054B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1630585B2 (en) * | 1967-04-22 | 1975-04-24 | Kloeckner-Humboldt-Deutz Ag, 5000 Koeln | Securing device for the coupling pin of a trailer coupling |
| EP0499908B1 (en) * | 1991-02-16 | 1995-09-06 | DIEHL GMBH & CO. | Anti-coupling device for the king pin of a semi-trailer coupling |
| US6193261B1 (en) * | 1999-09-22 | 2001-02-27 | Duane E. Hahka | Quick release hitch pin |
| CN2447198Y (en) * | 2000-04-16 | 2001-09-12 | 张国学 | Self-locking traction pin |
| EP1197357A1 (en) * | 2000-10-12 | 2002-04-17 | ORIS FAHRZEUGTEILE HANS RIEHLE GmbH | Trailer coupling |
| RU2293661C1 (en) * | 2005-12-12 | 2007-02-20 | Государственное образовательное учреждение высшего профессионального образования "Елецкий государственный университет им. И.А. Бунина" | Trailer-train draw-and-coupled gear |
| CN201872552U (en) * | 2010-12-08 | 2011-06-22 | 陕西重型汽车有限公司 | Locking device for traction pin of vehicle |
| CN205220250U (en) * | 2015-11-27 | 2016-05-11 | 衡阳合力工业车辆有限公司 | Towing pin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105329054A (en) | 2016-02-17 |
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