CN106739883A - Draw hook and draw-gear - Google Patents
Draw hook and draw-gear Download PDFInfo
- Publication number
- CN106739883A CN106739883A CN201611170835.7A CN201611170835A CN106739883A CN 106739883 A CN106739883 A CN 106739883A CN 201611170835 A CN201611170835 A CN 201611170835A CN 106739883 A CN106739883 A CN 106739883A
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- China
- Prior art keywords
- axis
- traction
- hole
- bail
- lock 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.)
- Pending
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- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 230000004308 accommodation Effects 0.000 claims abstract description 21
- 239000000872 buffer Substances 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60D—VEHICLE CONNECTIONS
- B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
- B60D1/01—Traction couplings or hitches characterised by their type
- B60D1/02—Bolt or shackle-type couplings
- B60D1/025—Bolt or shackle-type couplings comprising release or locking lever pins
-
- 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
-
- 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
- B60D1/30—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for sway control, e.g. stabilising or anti-fishtail devices; Sway alarm means
- B60D1/34—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for sway control, e.g. stabilising or anti-fishtail devices; Sway alarm means involving springs
- B60D1/345—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for sway control, e.g. stabilising or anti-fishtail devices; Sway alarm means involving springs the springs being of the bar or leaf type
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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
- B60D1/42—Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The invention provides a kind of draw hook and draw-gear, draw hook is connected through a bail with through hole by a lock pin with the bail, and draw hook includes：Axis of traction；Horn mouth, is connected with axis of traction；Drive mechanism, drive mechanism shell with drive device and the receiving drive device, drive mechanism shell forms an accommodation space connected with lock space, drive device control lock pin is moved between the accommodation space and lock space, wherein, drive mechanism also sets up a tappet, tappet extends to the lock space, when bail enters lock space, the tappet pivoting, tappet rotation are promoted so that drive device controls the lock pin to be moved to lock space from accommodation space.The draw hook that the present invention is provided can realize the de- extension and upper extension of bail special angle.
Description
Technical field
The present invention relates to trailer connection area, more particularly, to a kind of draw hook and draw-gear.
Background technology
In the prior art, draw hook is the instrument used when trailer is needed, and towing pad is located at the front portion of car, first uses screwdriver
Deng the cover plate of tamper tool towing pad, then draw hook is inserted and is tightened in towing pad, typically in order to ensure firm, tire can be used
Spanner is tightened in being inserted in draw hook.Also have other kinds of hookup have been widely used for being pulled by tractor it is various
The field of trailer, most of traditional hookup include the first pontes being linked with a vehicle and one with it is another
The combining structure of the second connecting portion part that vehicle is connected.For reality is connected, vehicle should accomplish the right of connecting portion in connection
The combination of standard, the again firm connection of trailer connecting portion, thus connecting portion is key point.
A kind of connected mode of prior art is, the lock pin of draw hook by draw hook and leads through the through hole of bail
Draw ring to link together.But existing structure, it is more difficult to realize the de- extension and upper extension of bail special angle.Additionally, existing knot
Can also be present lock pin due to being touched by bail in structure, and move down, now bail through hole misalignment lock pin, and lock pin cannot be worn
Crossing the through hole of bail causes draw hook and the bail cannot to connect.
The content of the invention
It is an object of the invention to provide a kind of draw hook and draw-gear, the difficulty of prior art, Neng Goushi are overcome
The de- extension and upper extension of existing bail special angle.
According to an aspect of the present invention, there is provided a kind of draw hook, the draw hook has logical by a lock pin through one
The bail in hole is connected with the bail, and the draw hook includes：
Axis of traction；
Horn mouth, the opening size that the horn mouth has openend and closing in end, the openend is more than the closing in
The opening size at end, the closing in end is connected with the axis of traction, and the closing in end has two relative end faces, two phases
To end face between form a lock space, dorsad the axis of traction is set for the openend；
Drive mechanism, the drive mechanism has drive device and accommodates the drive mechanism shell of the drive device, institute
State drive mechanism shell and form an accommodation space connected with the lock space, the drive device controls the lock pin in institute
State and moved between accommodation space and the lock space, wherein,
The drive mechanism also sets up a tappet, and the tappet extends to the lock space, and the bail enters institute
When stating lock space, promote the tappet pivoting, the tappet rotation so that the drive device control the lock pin from
The accommodation space is moved to the lock space.
Alternatively, when being hung on the bail, the bail promotes the rotational angle of the tappet bigger, the lock pin
Displacement it is bigger；The bail is taken off when hanging, and the tappet moves to initial position with the removal of the bail.
Alternatively, the axis of traction connects described bell-mouthed one end and is provided with two relative the first extensions and second
Extension, first extension and second extension are connected by side wall, first extension and the second extension
On be respectively equipped with a first through hole, two first through hole with one heart, and two lines of centres of first through hole perpendicular to
The first axle of the axis of traction.
Alternatively, the horn mouth can be rotatably mounted on the axis of traction around the line of centres of the first through hole,
The closing in end is connected with two extensions of the axis of traction, and one is respectively arranged with two end faces at the closing in end
Three through holes, two third through-holes are concentric with the first through hole,
Wherein, the first through hole is used to connect the lock space and the accommodation space with the third through-hole.
Alternatively, the draw hook also includes：Base assembly, the base assembly is used to lead the horn mouth with described
Draw the second extension connection of axle, and the horn mouth rotated around the line of centres of first through hole can be made to be reset to initial shape
State.
Alternatively, the second through hole is additionally provided with first extension, second through hole is located at the first through hole
And the other end of the axis of traction between.
Alternatively, the tappet passes through second through hole, and can be rotatably mounted at the driving around a second axis
In mechanism, first extending part is between the second axis and second extension.
Alternatively, the second axis perpendicular to the first through hole the line of centres, and perpendicular to the first axle.
Alternatively, the drive mechanism is additionally provided with the indicator for indicating lock pin connection status, is opened when draw hook is in
During state, lock pin is promoted in the indicator to accommodation space movement, the recess of lock pin and the indicator horizontal alignment
Indicating arm it is protruding；When draw hook is in closure state, indicating arm is returned in the indicator in the indicator
Portion.
Alternatively, the other end of the axis of traction installs the bearing assembly with bearing block.
Alternatively, on the basis of the axis perpendicular to plane where the bearing block, parallel to the lock pin movement side
To and perpendicular in the plane of plane where the bearing block, the maximum angle between the axis of bail and the datum axis
It is 20 degree to 30 degree；On the basis of the axis perpendicular to plane where the bearing block, perpendicular to the lock pin moving direction
Plane in, maximum angle between the axis of bail and the datum axis is 90 degree to 95 degree.
Alternatively, the other end of the axis of traction sets fifth hole, and the bearing assembly includes bearing block, buffering group
Part, the first locking member, rod-like members and the second latch assembly, wherein,
There is through hole so that axis of traction is passed through on the bearing block, the Buffer Unit, first locking member, it is described
First locking member is located between fifth hole and the side wall of the axis of traction, and the Buffer Unit is located at first tight lock part
Between part and the side wall of the axis of traction, the bearing seat is between the Buffer Unit and the side wall of the axis of traction；
The rod-like members are through the fifth hole and abut first locking member；
Be locked at the rod-like members at the fifth hole by second latch assembly.
Alternatively, the other end of the axis of traction, between the fifth hole and the horn mouth, be close to the described 5th
External screw thread is set at the position of through hole, and first locking member is with the first locking that internal thread is adapted with the external screw thread
Nut.
Alternatively, the rod-like members for one end has externally threaded second bolt, the second latch assembly include with it is described
The second adaptable locking nut of second bolt.
Alternatively, second latch assembly also include two shelves sets, respectively positioned at second bolt nut and lead
Draw between axle, between the second locking nut and axis of traction, the other end of the axis of traction also sets up two grooves, the groove position
In two ends of the fifth hole, the external diameter of the external diameter more than the fifth hole of the groove.The shelves set is located at institute
State in groove.
Alternatively, the bearing assembly includes bearing block, the first cushion pad, the second cushion pad and latch assembly, described the
There is through hole to pass through for the axis of traction on one cushion pad, the bearing block, second cushion pad, the bearing seat in
Between first cushion pad and the second cushion pad, the latch assembly delays first cushion pad, the bearing block, described second
Pad is rushed to be locked on the axis of traction, and first cushion pad and second cushion pad are in its pre-compressed state.
Alternatively, retaining ring is also set up between first cushion pad and the bearing block, is had in the retaining ring logical
Hole passes through for axis of traction；Taper washer, the taper washer are also set up between second cushion pad and the latch assembly
It is upper that there is through hole so that the axis of traction is passed through.
Alternatively, first cushion pad and second cushion pad are any one in rubber blanket, spring, bellows.
Alternatively, the axis of traction includes the first round flange, the second round flange, bearing block, the first installing plate and the
Two installing plates, the side of the first round flange is connected with the horn mouth, the opposite side of the first round flange
It is connected with first installing plate by flexible shaft sleeve；The direction bell-mouthed side of the second round flange is by soft
Property axle sleeve is connected with second installing plate；First installing plate and second installing plate are located at the bearing block both sides,
And connected by the bearing block.
Alternatively, the lock pin includes curved portions and cylindrical portion, and the external diameter of the curved portions is more than the cylindrical portion
External diameter, wherein, the lock pin enters the lock space and through the bail, and the bail is perpendicular to the lock
During pin axial direction, the outer wall of the curved portions is outer less than the cylindrical portion with the minimum range t1 of the bail inwall
Wall is with the bail inwall apart from t.
According to another aspect of the invention, a kind of draw-gear is also provided, including：Draw hook as described above；And lead
Draw ring, with a through hole, the lock pin for the draw hook is passed through, with the traction hook connects, wherein, the draw hook and institute
State bail and be respectively installed to the rear portion of tractor and the front end of trailer.
There is following advantage compared to existing technology due to having used above technology, the present invention：
1) by setting tappet in horn mouth lock space, tappet is promoted the present invention by the end of bail, around an axle
Rotate and then control lock pin to be moved between accommodation space and lock space, due to the displacement and the angle of rotation of tappet of lock pin
Degree is relevant, it is thereby achieved that the upper extension of bail special angle and de- extension, and is also prevented from lock pin and is surprisingly touched by bail
Move and fall；
2) present invention installs the bearing assembly with latch assembly by the other end of axis of traction, so by bearing block and
Associated components are locked on axis of traction, improve the bonding strength of axis of traction and bearing block；
3) present invention installs the bearing assembly with two cushion pads by the other end in axis of traction, and then in draw hook
During the traveling after the connection of automobile, there is provided cushioning effect, during alleviating bearing assembly and axis of traction due to traveling
Mechanical failure caused by clashing into, improves the service life and reliability of draw hook；
4) present invention by axis of traction the other end set circular flange and flexible shaft sleeve, it is possible to achieve draw hook with lead
Draw the wide-angle connection of ring, improve the flexibility after draw hook is connected with bail, so that installation draw hook and bail lead
The relative position relation for drawing car and trailer is more flexible；
5) present invention is by setting the shape of lock pin so that the gap between lock pin and bail through-hole wall is relatively
It is small, the impulsive force between lock pin and bail is reduced with this, and under bail angle of inclination, can increase in bail through hole
The contact area of the lock pin of wall, and then enable that draw hook bears bigger tractive force so that draw hook has longer use
Life-span.
Brief description of the drawings
Technical scheme is described in detail below in conjunction with the drawings and specific embodiments, so that of the invention
Characteristic and advantage become apparent.
Fig. 1 is the stereogram of the draw-gear according to one embodiment of the invention；
Fig. 2 is the right view of the draw-gear according to one embodiment of the invention；
Fig. 3 is the right pseudosection of the draw-gear according to one embodiment of the invention；
Fig. 4 A are the right view of another state of the draw hook according to one embodiment of the invention；
Fig. 4 B are the right view of the another state of the draw-gear according to one embodiment of the invention；
Fig. 5 A are the right view of another state of the draw hook according to one embodiment of the invention；
Fig. 5 B are the main view fragmentary cross-sectional view of another state of the draw hook according to one embodiment of the invention；
Fig. 5 C are the partial perspective view of another state of the draw hook according to one embodiment of the invention；
Fig. 6 is the exploded view of the draw hook according to one embodiment of the invention；
Fig. 7 is the stereogram of the axis of traction according to one embodiment of the invention；
Fig. 8 is the bell-mouthed stereogram according to one embodiment of the invention；
Fig. 9 is the stereogram of the drive mechanism according to one embodiment of the invention；
Figure 10 is the optical cable of the bearing assembly according to one embodiment of the invention；
Figure 11 is the profile of the bearing assembly according to one embodiment of the invention；
Figure 12 is the exploded view of the bearing assembly according to another embodiment of the present invention；
Figure 13 is the schematic diagram of the bearing assembly according to another embodiment of the present invention；
Figure 14 is the profile of the bearing assembly according to another embodiment of the present invention；
Figure 15 is a kind of schematic diagram of connection angle of draw hook and bail according to further embodiment of this invention；
Figure 16 is the schematic diagram of the axis of traction according to further embodiment of this invention；
Figure 17 is the schematic diagram of draw hook and bail the another kind connection angle according to further embodiment of this invention；
Figure 18 is the schematic diagram of the draw hook with cylindricality lock pin according to the embodiment of the present invention；
Figure 19 is the schematic diagram of the draw hook with arc lock pin according to the embodiment of the present invention；
Figure 20 is the schematic diagram of the draw hook of another state with arc lock pin according to the embodiment of the present invention.
Reference
The cylindrical portion of 1 axis of traction 42
The recess of 11 first extension 43
The bearing assembly of 111 first through hole 5
The bearing block of 112 second through hole 51
The Buffer Unit of 12 second extension 52
The rubber blanket of 121 first through hole 521
The taper washer of 13 first axle 522
The locking member of the other end 53 first of 14 axis of traction
The rod-like members of 141 fifth hole 54
The latch assembly of 142 groove 55 second
The locking nut of 2 horn mouth 551 second
21 552 grades of openends cover
The cushion pad of 22 closing in end 561 first
The cushion pad of 221 end face 562 second
The retaining ring of 222 third through-hole 57
The taper washer of 23 lock space 58
The round flange of 3 drive mechanism 691 first
The round flange of 31 drive mechanism shell 692 second
The bearing block of 311 accommodation space 61
The installing plate of 32 tappet 693 first
The installing plate of 321 second axis 694 second
The axle sleeve of 33 handle 695 first
The axle sleeve of 35 spring 696 second
The base assembly of 37 control stick 7
The 38 connection bails of hole position 9
The through hole of 39 indicator 91
4 lock pins
41 curved portions
Specific embodiment
Hereinafter will embodiments of the invention be given with detailed description.Although the present invention will be with reference to some specific embodiments
It is illustrated and illustrates, but should be noted that the present invention is not merely confined to these implementation methods.Conversely, to the present invention
The modification for carrying out or equivalent, all should cover in the middle of scope of the presently claimed invention.
In addition, in order to better illustrate the present invention, numerous details are given in specific embodiment below.
It will be understood by those skilled in the art that without these details, the present invention can equally be implemented.It is right in other example
It is not described in detail in known structure and part, in order to highlight purport of the invention.
With reference to Fig. 1 to Fig. 9, the draw-gear of one embodiment of the invention and the structure of draw hook are described.Fig. 1 is according to this hair
The stereogram of the draw-gear of a bright embodiment；Fig. 2 is the right view of the draw-gear according to one embodiment of the invention；Fig. 3 is
The right pseudosection of draw-gear according to an embodiment of the invention；Fig. 4 A are the another of the draw hook according to one embodiment of the invention
The right view of one state；Fig. 4 B are the right view of the another state of the draw-gear according to one embodiment of the invention；Fig. 5 A are root
According to the right view of another state of the draw hook of one embodiment of the invention；Fig. 5 B are the draw hook according to one embodiment of the invention
The main view fragmentary cross-sectional view of another state；Fig. 5 C are the part isometric of another state of the draw hook according to one embodiment of the invention
Figure；Fig. 6 is the exploded view of the draw hook according to one embodiment of the invention；Fig. 7 is the axis of traction according to one embodiment of the invention
Stereogram；Fig. 8 is the bell-mouthed stereogram according to one embodiment of the invention；Fig. 9 is the driving according to one embodiment of the invention
The stereogram of mechanism.
As shown in Figure 1 to 9, the invention provides a kind of draw-gear, draw-gear includes draw hook and with through hole 91
Bail 9.Draw hook includes axis of traction 1, horn mouth 2, drive mechanism 3 and lock pin 4.
The structure of axis of traction 1 can be found in Fig. 7, and one end of axis of traction 1 is provided with two the first relative extensions 11 and
Two extensions 12.First extension 11 and the second extension 12 are connected by side wall 17.First extension 11 and second prolongs
A first through hole 111,121 is respectively equipped with extending portion 12.Two first through hole 111,121 are concentric, and two first through hole
111st, first axle 13 of 121 line of centres perpendicular to axis of traction 1.The first axle 13 of axis of traction 1 is the extension of axis of traction 1
Direction.The second through hole 112 is additionally provided with first extension 11 of axis of traction 1.Second through hole 112 is located at the He of first through hole 111
Between the other end 14 of axis of traction 1.
The concrete structure of horn mouth 2 can be found in Fig. 8, with reference to Fig. 1 to Fig. 7, horn mouth 2 can around the first through hole 111,
121 line of centres is rotatably mounted on axis of traction 1.Horn mouth 2 has openend 21 and closing in end 22.Openend 21 and receipts
Insertion between mouth end 22.Opening size of the opening size of openend 21 more than closing in end 22.Dorsad axis of traction 1 sets for openend 21
Put, and dorsad axis of traction 1 is open for openend 21.Closing in end 22 is connected with two extensions 11,12 of axis of traction 1.Closing in end 22
With two relative end faces 221.Alternatively, this two relative end faces 221 are by the attachment structures such as bolt and axis of traction 1
Two extensions 11,12 are connected.Alternatively, this two relative end faces 221 be located at axis of traction 1 two extensions 11,12 it
Between.A third through-hole 222 is respectively arranged with this two relative end faces 221.Two third through-holes 222 and first through hole
111st, 121 with one heart, and a lock space 23 is formed between two third through-holes 222 (or two relative end faces 221).
Drive mechanism 3 is installed on the first extension 11 of axis of traction 1.Drive mechanism 3 has drive device and accommodates drives
The drive mechanism shell 31 of dynamic device.Drive mechanism shell 31 also forms an accommodation space 311.The accommodation space 311 is by the
One through hole 111,121 and third through-hole 222 are connected with the lock space 23 of horn mouth 2.Drive device is used to control lock pin 4 holding
Moved between 31 and lock space 23 between being empty.
Drive mechanism 3 also sets up a tappet 32.Tappet 32 extends to locking through the second through hole 112 of the first extension 11
Space 23, and can be rotatably mounted in drive mechanism 3 around a second axis 321.First extension 11 is located at second axis 321
And second between extension 12.Second axis 321 perpendicular to first through hole 111,121 the line of centres, and perpendicular to first axle
Line 13.
The drive device of such as rotating mechanism is optionally provided with drive mechanism 3, tappet 32 rotates triggering drive device,
To apply to the lock pin 4 positioned at accommodation space 31 power towards lock space 23, so that lock pin 4 is moved to lock space 23, wear
Cross the through hole 91 of bail 9.Drive mechanism 3 is additionally provided with handle 33, control panel and spring 35.In a specific embodiment,
The axle portion that control panel has hexagon through hole, handle 33 has the profile of hexagon, and the axle portion of handle 33 passes through six sides of control panel
Shape through hole is engaged with control panel.Spring 35 is socketed in the axle portion of handle 33.Control panel is used for as the part of drive device
Control the movement of lock pin 4.When handle 33 is rotated, drive device is also can trigger, applied with to the lock pin 4 positioned at accommodation space 31
Towards the power of lock space 23, so that lock pin 4 is moved to lock space 23, through the through hole 91 of bail 9.Drive mechanism 3 is also
The control stick 37 from its internal drive of peripheral operation is provided with, control stick is used for and control panel, spring 35 and drive device
Miscellaneous part is engaged, to control lock pin to move.In there are some embodiments, attachment device is provided with drive mechanism shell 31
Connection hole position 38, the product of the upgrading model for increasing annex.
In having some embodiments, referring to Fig. 5 A to Fig. 5 C, drive mechanism 3 is additionally provided with and indicates the connection status of lock pin 4
Indicator 39, when draw hook be in open mode when, lock pin 4 is moved up, lock pin 4 be recessed portion 43 (such as in Fig. 3, lock pin 4
Arcs of recesses part 43, recess 43 is located at lock pin 4 near one end of drive mechanism 3) with the horizontal alignment of indicator 39, and promote
Indicating arm in indicator 39 is protruding, can clearly know that lock pin 4 is in open mode from outside.Draw hook is in and closes
During conjunction state (lock pin 4 is passed through and pins bail 9), indicating arm is returned to inside indicator 39 in indicator 39, can from outside
Clearly to know that lock pin 4 has been moved down into ad-hoc location and has locked lock pin 4.
Draw hook can also include base assembly 7, and base assembly 7 is used for the second extension by horn mouth 2 and axis of traction 1
12 connections, and the line of centres rotation horn mouth 2 around first through hole 111,121 can be allow to be reset to original state.
Further, the other end 14 of axis of traction 1 also installs bearing block (such as Figure 10 labels 51), with perpendicular to bearing block
On the basis of the axis of 51 place planes, parallel to the moving direction of lock pin 4 and perpendicular to the flat of the place plane of the bearing block 51
In face, the maximum angle between the axis of bail 9 and the datum axis is 20 degree to 30 degree.With where bearing block 51
On the basis of the axis of plane, in the plane perpendicular to the moving direction of lock pin 4, between the axis of bail 9 and the datum axis
Maximum angle be 90 degree to 95 degree.
Specifically, referring to Fig. 4 A, draw hook is not connected the original state of draw hook with bail.Tappet 32 is moved with lock pin
The dynamic angled B1 in direction.When being hung on bail 9, bail 9 enters lock space 23, and towards the other end 14 of axis of traction 1
Promote tappet 32, make tappet 32 towards the axis of traction 1 the other end 14 around the second axis 321 turn an angle when,
The drive device for triggering drive mechanism 3 controls lock pin 4 to pass through first through hole 111,121, third through-hole 222 from accommodation space 311
And the through hole 91 of bail is moved and is locked to lock space 23.In the present embodiment, the rotational angle of tappet 32 is bigger, lock pin
4 displacement is bigger.Specifically, can be by setting gear, the link gear such as connecting rod in drive device, and by setting
Radius, length of connecting rod of gear etc. is put to adjust the pass of the ratio between the rotational angle of tappet 32 and the displacement of lock pin 4
System, will not be described here.When rotational angle B1 and the moving direction parallel to lock pin 4, lock pin 4 is moved down apart from S, lock pin 4
Lower end be located in the through hole (or groove) of horn mouth 2 and the second extension 12 of axis of traction 1.Can be with drive mechanism 3
Latch-up structure is set, and can be locked in lock pin 4 in lock space by latch-up structure.On bail 9 hang after can be found in Fig. 1-Fig. 3 and
Fig. 4 B.When bail 9 is de- to be hung, during rotatable handles 33, drive device is triggered, move the lock pin 4 for being located at lock space 23
To accommodation space 311, so that lock pin 4 deviates from the through hole 91 of bail 9.Further, when taking off extension, lock pin 4 is moved from bail 9
Go out, as bail 9 is outwards removed, tappet 32 is subject to the effect of contained spring as bail 9 moves to initial position (rotation
To special angle, in other words, tappet 32 is at an angle of B1 with lock pin moving direction).
Because the displacement of lock pin 4 is relevant with the rotational angle of tappet 32, therefore, it can solve bail in such as Fig. 4 B
When being hung on shown special angle C1 (axis direction of bail 9 and the angle between the moving direction of lock pin 4), due to
The end of bail 9 is blocked in the position of lock pin 4, and then is difficult to the problem of the upper extension of completion bail 9.Similarly, the present invention is provided
Pintle hook construction can also realize the de- extension of the special angle of bail 9.Special angle described herein is represented when bail 9
Axis direction and the angle between the moving direction of lock pin 4 are more than an angle (such as 30 degree).Meanwhile, the setting of tappet 32
Lock pin 4 is also prevented to be fallen by unexpected shake-up of bail 9.
The bearing assembly 5 of one embodiment of the invention is described with reference to Figure 10 and Figure 11.Figure 10 is real according to the present invention one
Apply the optical cable of the bearing assembly 5 of example.Figure 11 is the profile of the bearing assembly 5 according to one embodiment of the invention.
Horn mouth 2, drive mechanism 3 are installed in one end of axis of traction 1, and the other end 14 of axis of traction 1 installs bearing assembly 5.And
The other end 14 of axis of traction 1 sets fifth hole 141.
Bearing assembly 5 includes that bearing block 51, Buffer Unit 52, the first locking member 53, rod-like members 54 and second are locked
Component 55.There is through hole so that axis of traction 1 is passed through on bearing block 51, Buffer Unit 52, the first locking member 53.Bearing block 51,
Buffer Unit 52, the first locking member 53 are mutually close to.Specifically, bearing block 51, Buffer Unit 52, the first locking member 53
Axis of traction 1 is sequentially passed through from the other end 14 of axis of traction 1.First locking member 53 is located at the side of fifth hole 141 and axis of traction 1
Between wall 17.Buffer Unit 52 is located between the first locking member 53 and the side wall 17 of axis of traction 1.Bearing block 51 is located at buffering group
Between part 52 and the side wall 17 of axis of traction 1.
Rod-like members 54 are through fifth hole 141 and abut the first locking member 53.Second latch assembly 55 is by stem
Part 54 is locked at fifth hole 141.Buffer Unit 52 can include rubber blanket 521 and/or taper washer 522.It is excellent at one
In selection of land embodiment, Buffer Unit 52 can include rubber blanket 521 and taper washer 522, and rubber blanket 521 and taper washer
522 sequentially pass through axis of traction 1, and rubber blanket 521 is located between bearing block 51 and taper washer 522.Second latch assembly 55 is by bar
Shape part 54 is locked at when at fifth hole 141, bearing block 51, rubber blanket 521, taper washer 522, the phase of the first locking member 53
Mutually it is close to.
In a specific embodiment, the other end 14 of axis of traction 1, fifth hole 141 and axis of traction 1 side wall 17 it
Between, be close at the position of fifth hole 141 set external screw thread, the first locking member 53 be with the external screw thread be adapted in spiral shell
First locking nut of line.Externally threaded second bolt for one end has of rod-like members 54, the second latch assembly 55 includes and the
The second adaptable locking nut 551 of two bolts.Alternatively, the second latch assembly 55 also includes two shelves sets 552, is located at respectively
Between the nut and axis of traction 1 of the second bolt, between the second locking nut 551 and axis of traction 1.Correspondingly, axis of traction 1 is another
End 14 also sets up two grooves 142.Groove 142 is located at two ends of fifth hole 141.The external diameter of groove 142 is more than the 5th
The internal diameter of through hole 141.Shelves set 552 is located in groove 142, and is coordinated with groove 142.In the present embodiment, draw hook is by leading
The other end 14 for drawing axle 1 installs the bearing assembly 5 with latch assembly, and then bearing block 51 and associated components are locked at into traction
On axle 1, the bonding strength of axis of traction and bearing block is improved.
The bearing assembly 5 of another embodiment of the present invention is described with reference to Figure 12 and Figure 14.Figure 12 is according to of the invention another
The exploded view of the bearing assembly 5 of one embodiment；Figure 13 is the schematic diagram of the bearing assembly 5 according to another embodiment of the present invention；Figure
14 is the profile of the bearing assembly 5 according to another embodiment of the present invention.
Horn mouth 2 and drive mechanism 3 are installed in one end of axis of traction 1, and the other end 14 of axis of traction 1 installs bearing assembly 5.
Bearing assembly 5 includes bearing block 51, the first cushion pad 561, the second cushion pad 562 and latch assembly (for example, bag
Include the first locking member 53, the latch assembly 55 of rod-like members 54 and second of Figure 10 and Figure 11).Bearing block 51 is used to connect traction
Axle 1 and trailer.First cushion pad 561 and the second cushion pad 562 can be rubber buffers, and the first cushion pad 561 and
The size of two cushion pad 562, coefficient of elasticity can be with identical.First cushion pad 561 and the second cushion pad 562 can be rubber blankets,
Can be spring, the structure with identical function and effect such as bellows.
There is through hole so that axis of traction 1 is passed through on first cushion pad 561, bearing block 51, the second cushion pad 562.It is specific and
Speech, the first cushion pad 561, bearing block 51, the second cushion pad 562 sequentially pass through axis of traction 1 from the other end 14 of axis of traction 1.Axle
Bearing 51 is located between the first cushion pad 561 and the second cushion pad 562.Latch assembly by the first cushion pad 561, bearing block 51,
Second cushion pad 562 is locked on axis of traction 1.And first cushion pad 561 and the second cushion pad 562 be in its pre-compressed state.
Alternatively, retaining ring 57 is also set up between the first cushion pad 561 and bearing block 51, in retaining ring 57 have through hole with
Passed through for axis of traction 1.Retaining ring 57 is used for the first cushion pad 561 of prevention, and dorsad horn mouth 2 is moved vertically, and it is kept pre-
Compressive state.
Alternatively, taper washer (for example, tapered cap 58), taper are also set up between the second cushion pad 562 and latch assembly
There is through hole so that axis of traction 1 is passed through on packing ring 58.Taper washer 58 is used to prevent the second cushion pad 562 dorsad loudspeaker vertically
Mouth 2 is moved, and its is kept its pre-compressed state.
In the present embodiment, the bearing assembly 5 with two cushion pads is installed by the other end 14 of axis of traction 1, and then
During traveling after the connection of draw hook and automobile, two cushion pads cooperate, there is provided cushioning effect, alleviate bearing group
Mechanical failure caused by the shock of part 5 and axis of traction 1 during traveling, improves the service life and reliability of draw hook
Property.Meanwhile, the present embodiment passes through, and retaining ring 57 and taper washer 58 make two cushion pads keep its pre-compressed state, further carry
Buffering effect high.
The axis of traction 1 of another embodiment of the present invention is described with reference to Figure 15 to Figure 17.Figure 15 is another according to the present invention
The draw hook of embodiment and a kind of schematic diagram of the connection angle of bail 9；Figure 16 is the traction according to further embodiment of this invention
The schematic diagram of axle 1；Figure 17 is the signal of another connection angle of draw hook and bail 9 according to further embodiment of this invention
Figure.
In the present embodiment, horn mouth 2 and drive mechanism 3 are installed in one end of axis of traction 1.The other end of axis of traction 6 includes
First round flange 691, the second round flange 692, bearing block 61, the first installing plate 693 and the second installing plate 694.
First round flange 691 and the second round flange 692 have cyclic structure.The side of the first round flange 691 with
Horn mouth 2 is connected, and the opposite side of the first round flange 691 is connected by flexible shaft sleeve 695 with the first installing plate 693.The
The side towards horn mouth 2 of two round flanges 692 is connected by flexible shaft sleeve 696 with the second installing plate 694.Alternatively,
One installing plate 693 has and the corresponding annular via of the first round flange 691.Second installing plate 694 has and the second round method
Blue 692 corresponding annular vias.The side of flexible shaft sleeve 695 is connected to the inwall of the first round flange 691, flexible shaft sleeve 695
Opposite side be connected to the annular via inwall of the first installing plate 693.The side of flexible shaft sleeve 696 is connected to the second round flange
692 inwall, the opposite side of flexible shaft sleeve 696 is connected to the annular via inwall of the second installing plate 694.First installing plate 693
The both sides of bearing block 61 are located at the second installing plate 694, and are connected by bearing block 61.Bearing block 61 is used to connect the He of axis of traction 1
Tractor.
Flexible shaft sleeve 695,696 is a kind of material of special high intensity, ensure that the first round flange 691 and first
Connection between installing plate 693, between the second round flange 692 and the second installing plate 694, while having good toughness.The
Can be bolted between one installing plate 693 and bearing block 61, between the second installing plate 694 and bearing block 61.
By the axis of traction 1 of the present embodiment, the maximum connection angle of draw hook and bail 9 may refer to Figure 15 and Tu
17.In fig .15, on the basis of the axis perpendicular to the place plane of bearing block 61, in the plane perpendicular to lock pin moving direction
Interior, the accessible maximum angle A1 between the axis of bail 9 and the datum axis is 90 degree to 100 degree.In fig. 17, with
On the basis of the axis of the place plane of bearing block 61, parallel to lock pin moving direction and where bearing block 61
In the plane of plane, the accessible maximum angle A2 between the axis of bail 9 and the datum axis is 30 degree to 45 degree.
The present embodiment by axis of traction 1 the other end set circular flange and flexible shaft sleeve, it is possible to achieve draw hook with
The wide-angle connection of bail 9, improves the flexibility after draw hook is connected with bail 9, so as to install draw hook and bail 9
Trailer and tractor relative position relation it is more flexible.For example, when trailer and tractor install draw hook and bail 9
When position height difference is larger, it is also possible to realize the connection (such as Figure 17) of draw hook and bail 9.Again for example, trailer and tractor
Can realize that wide-angle turns (such as Figure 15) in motion.
The lock pin of the embodiment of the present invention is described with reference to Figure 18 to Figure 20.Figure 18 is having according to the embodiment of the present invention
The schematic diagram of the draw hook of cylindricality lock pin；Figure 19 is the signal of the draw hook with arc lock pin according to the embodiment of the present invention
Figure；Figure 20 is the schematic diagram of the draw hook of another state with arc lock pin according to the embodiment of the present invention.
Referring first to Figure 19 and Figure 20.Draw hook includes axis of traction 1, horn mouth 2, drive mechanism 3 and lock pin 4.Axis of traction 1
Connected with horn mouth 2, horn mouth 2 has lock space 23.After bail 9 enters lock space 23, the control lock pin of drive mechanism 3
4 enter lock spaces 23, and through the through hole 91 of bail 9.
Lock pin 4 includes first (such as curved portions 41) and second (such as cylindrical portion 42), the external diameter of first 41
External diameter more than second 42.Lock pin 4 enters lock space 23 and through the through hole 91 of bail 9, and bail 9 is perpendicular to lock
During axial direction (or the moving direction) of pin 4, the outer wall of first 41 is less than with the minimum range t1 of the inwall of through hole 91 of bail 9
The outer wall of second 42 is with the inwall of through hole 91 of bail 9 apart from t.Alternatively, the axial height of first 41 is equal to traction
The axial height of ring 9.
Contrasted with the cylindrical lock pin 4 shown in Figure 18, cylindrical lock pin 4 through bail 9 through hole 91 when, and lead
The gap drawn between the inwall of through hole 91 of ring 9 is larger, in use, due to the presence and the change of car speed in gap
Change, larger impulsive force can be produced between bail 9 and lock pin 4.And the curved portions 41 of the lock pin 4 shown in Figure 19 and Figure 20 with lead
The gap for drawing the inwall of through hole 91 of ring 9 is relatively small, can reduce the impulsive force between lock pin 4 and bail 9.
Further contrasted with the cylindrical lock pin 4 shown in Figure 18, using general cylindrical lock pin, in such as Figure 18 and
Under the heeling condition of Figure 20, the contact between bail 9 and lock pin 4 is linear contact, and contact area very little, contact point bears very
Big power, lock pin 4 is easy to damage at contact point, and the life-span is shorter.And the curved portions 41 of the lock pin 4 shown in Figure 19 and Figure 20 exist
Under the heeling condition of Figure 18 and Figure 20, can keep contacting well with the inwall of through hole 91 of bail 9, be connect with larger
Contacting surface, can bear bigger tractive force, lock pin 4 and bail 9 is had longer service life.
There is following advantage compared to existing technology due to having used above technology, the present invention：
1) by setting tappet in horn mouth lock space, tappet is promoted the present invention by the end of bail, around an axle
Rotate and then control lock pin to be moved between accommodation space and lock space, due to the displacement and the angle of rotation of tappet of lock pin
Degree is relevant, it is thereby achieved that the upper extension of bail special angle and de- extension, and is also prevented from lock pin and is surprisingly touched by bail
Move and fall；
2) present invention installs the bearing assembly with latch assembly by the other end of axis of traction, so by bearing block and
Associated components are locked on axis of traction, improve the bonding strength of axis of traction and bearing block；
3) present invention installs the bearing assembly with cushion pad by the other end in axis of traction, and then in draw hook and vapour
During traveling after the connection of car, there is provided cushioning effect, alleviate bearing assembly and axis of traction due to the shock during traveling
Caused mechanical failure, improves the service life and reliability of draw hook；
4) present invention by axis of traction the other end set circular flange and flexible shaft sleeve, it is possible to achieve draw hook with lead
Draw the wide-angle connection of ring, improve the flexibility after draw hook is connected with bail, so that installation draw hook and bail lead
The relative position relation for drawing car and trailer is more flexible；
5) present invention is by setting the shape of lock pin so that the gap between lock pin and bail through-hole wall is relatively
It is small, the impulsive force between lock pin and bail is reduced with this, and under bail angle of inclination, can increase in bail through hole
The contact area of the lock pin of wall, and then enable that draw hook bears bigger tractive force so that draw hook has longer use
Life-span.
The above is only concrete application example of the invention, protection scope of the present invention is not limited in any way.Except above-mentioned
Implement exception, the present invention there can also be other embodiment.The technical scheme that all use equivalents or equivalent transformation are formed,
Fall within scope of the present invention.
Claims (21)
1. a kind of draw hook, it is characterised in that the draw hook is by a lock pin (4) a through bail with through hole (91)
(9) it is connected with the bail (9), the draw hook includes：
Axis of traction (1)；
Horn mouth (2), the horn mouth (2) is with openend (21) and closing in end (22), the open-mouth ruler of the openend (21)
The very little opening size more than the closing in end (22), the closing in end (22) is connected with the axis of traction (1), the closing in end
(22) with two relative end faces (221), a lock space (23) is formed between this two relative end faces (221), it is described
Dorsad the axis of traction (1) is set for openend (21)；
Drive mechanism (3), drive mechanism shell of the drive mechanism (3) with drive device and the receiving drive device
(31), the drive mechanism shell (31) forms an accommodation space (311) connected with the lock space (23), the driving
Device controls the lock pin (4) to be moved between the accommodation space (311) and the lock space (23), wherein,
The drive mechanism (3) also sets up a tappet (32), and the tappet (32) extends to the lock space (23), described to lead
When drawing ring (9) into the lock space (23), the tappet (32) is promoted to be rotated around axle (321), the tappet (32) rotates
So that the drive device controls the lock pin (4) to be moved to the lock space (23) from the accommodation space (311), and wear
Cross the through hole (91) of the bail (9).
2. draw hook as claimed in claim 1, it is characterised in that when being hung on the bail (9), the bail (9) pushes away
The rotational angle for moving the tappet (32) is bigger, and the displacement of the lock pin (4) is bigger；
The bail (9) is taken off when hanging, and the tappet (32) moves to initial position with the removal of the bail (9).
3. draw hook as claimed in claim 1, it is characterised in that the axis of traction (1) connects one end of the horn mouth (2)
Two relative the first extensions (11) and the second extension (12) are provided with, first extension (11) and described second is prolonged
Extending portion (12) is connected by side wall (17), one first is respectively equipped with first extension (11) and the second extension (12) and is led to
Hole (111,121), two first through hole (111,121) with one heart, and two first through hole (111,121) the line of centres
Perpendicular to the first axle (13) of the axis of traction (1).
4. draw hook as claimed in claim 3, it is characterised in that the horn mouth (2) can around the first through hole (111,
121) the line of centres is rotatably mounted on the axis of traction (1), two of the closing in end (22) and the axis of traction (1)
Extension (11,12) is connected, and a third through-hole (222) is respectively arranged with two end faces (221) of the closing in end (22),
Two third through-holes (222) are concentric with the first through hole (12),
Wherein, the first through hole (12) with the third through-hole (222) for connecting the lock space (23) and the appearance
Between being empty (311).
5. draw hook as claimed in claim 4, it is characterised in that the draw hook also includes：
Base assembly (7), the base assembly (7) is for by the second extension of the horn mouth (2) and the axis of traction (1)
(12) connect, and the horn mouth (2) rotated around the line of centres of first through hole (111,121) is reset to original state.
6. draw hook as claimed in claim 3, it is characterised in that be additionally provided with the second through hole on first extension (11)
(112), second through hole (112) is between the first through hole (111) and the other end (14) of the axis of traction (1).
7. draw hook as claimed in claim 6, it is characterised in that the tappet (32) through second through hole (112), and
Can be rotatably mounted in the drive mechanism (3) around a second axis (321), the second axis (321) are positioned at described
One extension (11) dorsad second extension (12) side set.
8. draw hook as claimed in claim 7, it is characterised in that the second axis (321) are perpendicular to the first through hole
The line of centres of (111,121), and perpendicular to the first axle (13).
9. draw hook as claimed in claim 1, it is characterised in that the drive mechanism (3) is additionally provided with instruction lock pin (4) even
The indicator (39) of state is connect,
When draw hook is in open mode, lock pin (4) is to accommodation space (331) movement, the recess (43) of lock pin (4) and institute
Indicator (39) horizontal alignment is stated, and promotes the indicating arm in the indicator (39) protruding；
When draw hook is in closure state, it is internal that the interior indicating arm of the indicator (39) returns to the indicator (39).
10. draw hook as claimed in claim 1, it is characterised in that the other end (14) of the axis of traction (1) is installed has axle
The bearing assembly (5) of bearing (51).
11. draw hooks as claimed in claim 10, it is characterised in that with perpendicular to the axle of plane where the bearing block (51)
On the basis of line, parallel to the lock pin (4) moving direction and in the plane of plane where the bearing block (51),
Maximum angle between the axis and the datum axis of bail (9) is 20 degree to 30 degree；
On the basis of the axis perpendicular to plane where the bearing block (51), perpendicular to the lock pin (4) moving direction
In plane, the maximum angle between the axis and the datum axis of bail (9) is 90 degree to 95 degree.
12. draw hooks as claimed in claim 10, it is characterised in that the other end (14) of the axis of traction (1) sets the 5th
Through hole (141),
The bearing assembly (5) includes bearing block (51), Buffer Unit (52), the first locking member (53), rod-like members (54)
And second latch assembly (55), wherein,
The bearing block (51), the Buffer Unit (52), there is through hole for axis of traction on first locking member (53)
(1) pass through, first locking member (53) between fifth hole (141) and the side wall (17) of the axis of traction (1), institute
Buffer Unit (52) is stated between first locking member (53) and the side wall (17) of the axis of traction (1), the bearing
Seat (51) is between the Buffer Unit (52) and the side wall (17) of the axis of traction (1)；
The rod-like members (54) are through the fifth hole (141) and abut first locking member (53)；
The rod-like members (54) are locked at the fifth hole (141) place by second latch assembly (55).
13. draw hooks as claimed in claim 12, it is characterised in that the other end (14) of the axis of traction (1), described
Between five through holes (141) and the side wall (17) of the axis of traction (1), it is close to set outer at the position of the fifth hole (141)
Screw thread, first locking member (53) is with the first locking nut that internal thread is adapted with the external screw thread.
14. draw hooks as claimed in claim 12, it is characterised in that the rod-like members (54) are externally threaded for one end has
Second bolt, the second latch assembly (55) includes second locking nut (551) adaptable with second bolt.
15. draw hooks as claimed in claim 14, it is characterised in that second latch assembly (55) also includes two shelves sets
(552), respectively between the nut and axis of traction (1) of second bolt, the second locking nut (551) and axis of traction (1)
Between,
The other end (14) of the axis of traction (1) also sets up two grooves (142), and the groove (142) is logical positioned at the described 5th
Two ends in hole (141), the external diameter of the external diameter more than the fifth hole (141) of the groove (142), the shelves set
(552) in the groove (142).
16. draw hooks as claimed in claim 10, it is characterised in that the bearing assembly (5) includes bearing block (51), first
Cushion pad (561), the second cushion pad (562) and latch assembly, first cushion pad (561), the bearing block (51), institute
Stating on the second cushion pad (562) has through hole so that the axis of traction (1) is passed through, and the bearing block (51) is positioned at the first cushion pad
(561) and the second cushion pad (562) between, the latch assembly by first cushion pad (561), the bearing block (51),
Second cushion pad (562) is locked on the axis of traction (1), and first cushion pad (561) and second buffering
Pad (562) is in its pre-compressed state.
17. draw hooks as claimed in claim 16, it is characterised in that first cushion pad (561) and the bearing block
(51) retaining ring (57) is also set up between, there is through hole so that axis of traction (1) is passed through on the retaining ring (57)；
Taper washer (58), the taper washer (58) are also set up between second cushion pad (562) and the latch assembly
It is upper that there is through hole so that the axis of traction (1) is passed through.
18. draw hooks as claimed in claim 16, it is characterised in that first cushion pad (561) and second buffering
Pad (562) is rubber blanket, any one in spring, bellows.
19. draw hooks as claimed in claim 1, it is characterised in that the axis of traction (1) including the first round flange (691),
Second round flange (692), bearing block (61), the first installing plate (693) and the second installing plate (694),
The side of the first round flange (691) is connected with the horn mouth (2), the first round flange (691)
Opposite side be connected with first installing plate (693) by flexible shaft sleeve (695)；
The side of the direction horn mouth (2) of the second round flange (692) passes through flexible shaft sleeve (696) and described second
Installing plate (694) is connected；
First installing plate (693) and second installing plate (694) positioned at the bearing block (61) both sides, and by described
Bearing block (61) is connected.
20. draw hook as described in any one of claim 1 to 19, it is characterised in that
The lock pin (4) includes curved portions (41) and cylindrical portion (42), and the external diameter of the curved portions (41) is more than the cylinder
The external diameter in shape portion (42), wherein,
The lock pin (4) enters the lock space (23) and through the bail (9), and the bail (9) perpendicular to
During lock pin (4) axial direction, the minimum of the outer wall of the curved portions (41) and through hole (91) inwall of the bail (9)
Outer wall apart from t1 less than the cylindrical portion (42) is with through hole (91) inwall of the bail (9) apart from t.
A kind of 21. draw-gears, it is characterised in that including：
Draw hook as described in any one of claim 1 to 20；And
Bail (9), with a through hole (91), the lock pin (4) for the draw hook is passed through, with the traction hook connects, its
In,
The draw hook and the bail (9) are respectively installed to the rear portion of tractor and the front end of trailer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170835.7A CN106739883A (en) | 2016-12-16 | 2016-12-16 | Draw hook and draw-gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611170835.7A CN106739883A (en) | 2016-12-16 | 2016-12-16 | Draw hook and draw-gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106739883A true CN106739883A (en) | 2017-05-31 |
Family
ID=58892152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611170835.7A Pending CN106739883A (en) | 2016-12-16 | 2016-12-16 | Draw hook and draw-gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106739883A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323190A (en) * | 2017-07-05 | 2017-11-07 | 天津市博瑞特旅游观光火车有限公司 | A kind of dome car rotation traction traction device |
| CN110831790A (en) * | 2017-06-21 | 2020-02-21 | Vbg集团公司 | Selective locking of guide funnel |
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|---|---|---|---|---|
| DE3540641A1 (en) * | 1985-11-15 | 1987-05-21 | Rockinger Spezial Fab Joh | Trailer coupling - keyword: centring of the coupling jaw on the automatic housing |
| DE3738351A1 (en) * | 1987-11-11 | 1989-05-24 | Rockinger Spezial Fab Joh | TRAILER HITCH |
| EP0457249A2 (en) * | 1990-05-14 | 1991-11-21 | ROCKINGER Spezialfabrik für Anhängerkupplungen GmbH & Co. | Trailer coupling key word: securing device with mechanical play |
| WO1994022683A1 (en) * | 1993-03-30 | 1994-10-13 | Rockinger Spezialfabrik für Anhängerkupplungen GmbH & Co | Trailer hitch |
| EP1495883A1 (en) * | 2003-07-09 | 2005-01-12 | Schnabl, Peter | Trailer coupling |
| CN202752901U (en) * | 2012-07-03 | 2013-02-27 | 安徽省辉煌机械制造有限公司 | Clamping device special for lathe |
| CN202896189U (en) * | 2012-10-22 | 2013-04-24 | 安徽江淮汽车股份有限公司 | Anti-loose drive shaft locking structure |
| CN206633734U (en) * | 2016-12-16 | 2017-11-14 | 约斯特（中国）汽车部件有限公司 | Draw hook and draw-gear |
-
2016
- 2016-12-16 CN CN201611170835.7A patent/CN106739883A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3540641A1 (en) * | 1985-11-15 | 1987-05-21 | Rockinger Spezial Fab Joh | Trailer coupling - keyword: centring of the coupling jaw on the automatic housing |
| DE3738351A1 (en) * | 1987-11-11 | 1989-05-24 | Rockinger Spezial Fab Joh | TRAILER HITCH |
| EP0457249A2 (en) * | 1990-05-14 | 1991-11-21 | ROCKINGER Spezialfabrik für Anhängerkupplungen GmbH & Co. | Trailer coupling key word: securing device with mechanical play |
| WO1994022683A1 (en) * | 1993-03-30 | 1994-10-13 | Rockinger Spezialfabrik für Anhängerkupplungen GmbH & Co | Trailer hitch |
| EP1495883A1 (en) * | 2003-07-09 | 2005-01-12 | Schnabl, Peter | Trailer coupling |
| CN202752901U (en) * | 2012-07-03 | 2013-02-27 | 安徽省辉煌机械制造有限公司 | Clamping device special for lathe |
| CN202896189U (en) * | 2012-10-22 | 2013-04-24 | 安徽江淮汽车股份有限公司 | Anti-loose drive shaft locking structure |
| CN206633734U (en) * | 2016-12-16 | 2017-11-14 | 约斯特（中国）汽车部件有限公司 | Draw hook and draw-gear |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110831790A (en) * | 2017-06-21 | 2020-02-21 | Vbg集团公司 | Selective locking of guide funnel |
| CN107323190A (en) * | 2017-07-05 | 2017-11-07 | 天津市博瑞特旅游观光火车有限公司 | A kind of dome car rotation traction traction device |
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Application publication date: 20170531 |