CN206633733U - Draw hook and draw-gear - Google Patents
Draw hook and draw-gear Download PDFInfo
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- CN206633733U CN206633733U CN201621386985.7U CN201621386985U CN206633733U CN 206633733 U CN206633733 U CN 206633733U CN 201621386985 U CN201621386985 U CN 201621386985U CN 206633733 U CN206633733 U CN 206633733U
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- bail
- axis
- draw hook
- lock pin
- installing plate
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Abstract
The utility model provides a kind of draw hook and draw-gear, and draw hook has the bail of through hole to be connected with the bail by a lock pin through one, and draw hook includes：Axis of traction, the axis of traction includes the first round flange, the second round flange, bearing block, the first installing plate and the second installing plate, the side of the first round flange is connected with the horn mouth, and the opposite side of the first round flange is connected by flexible shaft sleeve with first installing plate；The direction bell-mouthed side of the second round flange is connected by flexible shaft sleeve with second installing plate；First installing plate and second installing plate are located at the bearing block both sides, and are connected by the bearing block.Draw hook provided by the utility model can improve the flexibility after draw hook is connected with bail.
Description
Technical field
Trailer connection area is the utility model is related to, more particularly, to a kind of draw hook and draw-gear.
Background technology
In the prior art, draw hook is the instrument used when needing trailer, 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 in towing pad and tightened, typically in order to ensure firm, tire can be used
Spanner, which is inserted in draw hook, to be tightened.Also have other kinds of hookup have been widely used for pulling by tractor it is a variety of
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 for the second connecting portion part that vehicle is connected.Connected for reality, vehicle should accomplish pair of connecting portion in connection
The firm connection of standard, again trailer connecting portion, thus the combination of connecting portion is key point.
A kind of connected mode of prior art is that the lock pin of draw hook passes through the through hole of bail, by draw hook and is led
Draw ring to link together.But existing structure, it is more difficult to realize that the wide-angle of draw hook and bail connects, trailer and tractor
Relative position can be limited by the connection of draw hook and bail.
The flexibility after draw hook is connected with bail is improved, so that the trailer and tractor of installation draw hook and bail
Relative position relation it is more flexible
Utility model content
The purpose of this utility model is to provide a kind of draw hook and draw-gear, overcomes the difficulty of prior art, energy
Enough improve the flexibility after draw hook is connected with bail.
According to one side of the present utility model, there is provided a kind of draw hook, the draw hook have by a lock pin through one
There is the bail of through hole to be connected with the bail, the draw hook includes：
Axis of traction, the axis of traction include 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 are connected with the horn mouth, the opposite side of the first round flange
It is connected by flexible shaft sleeve with first installing plate；The direction bell-mouthed side of the second round flange passes through 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, first installing plate has annular via corresponding with the described first round flange；Second peace
Loading board has annular via corresponding with the described second round flange
Alternatively, the side of the flexible shaft sleeve is connected to the inwall of the described first round flange, the flexible shaft sleeve
Opposite side is connected to the annular via inwall of first installing plate；It is round that the side of the flexible shaft sleeve is connected to described second
The inwall of flange, the opposite side of the flexible shaft sleeve are connected to the annular via inwall of second installing plate.
Alternatively, on the basis of the axis perpendicular to plane where the bearing block, perpendicular to the lock pin movement side
To plane in, maximum angle A1 between the axis of bail and the datum axis is 90 degree to 100 degree.
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
A2 is 30 degree to 45 degree.
Alternatively, the draw hook also includes：
Horn mouth, the horn mouth have openend and closing in end, and the opening size of the openend is more than the closing in
The opening size at end, the closing in end and the traction axis connection, the closing in end has two relative end faces, two phases
To end face between form a lock space, the openend is set backwards to the axis of traction；
Drive mechanism, the drive mechanism have drive device and accommodate 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, and when being hung on the bail, the bail promotes the rotation of the tappet
Angle is bigger, and the displacement of the lock pin is bigger；When the bail takes off extension, the tappet is with the removal of the bail
It is moved to initial position.
Alternatively, bell-mouthed one end described in the traction axis connection is provided with two relative the first extensions and second
Extension, first extension are connected with second extension by side wall, are divided on first extension and the second extension
Not She You a first through hole, two first through hole are concentric, and the line of centres of two first through hole is perpendicular to described
The first axle of axis of traction, the horn mouth can be rotatably mounted to the axis of traction around the line of centres of the first through hole
On, 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
Individual third through-hole, two third through-holes and the first through hole are concentric,
Wherein, the first through hole is used to connect the lock space and the accommodation space with the third through-hole.
Alternatively, the second through hole is additionally provided with first extension, second through hole is located at the first through hole
Between the other end of the axis of traction, the tappet passes through second through hole, and can rotationally be installed around a second axis
In the drive mechanism, first extending part is between the second axis and second extension, and described second
Axis perpendicular to the first through hole the line of centres, and perpendicular to the first axle.
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, which enters, the lock space and passes through the bail, and the bail is perpendicular to the lock
When selling axial direction, the minimum range t1 of the outer wall of the curved portions and the bail inwall is less than the outer of the cylindrical portion
The distance t of wall and the bail inwall.
According to another aspect of the present utility model, a kind of draw-gear is also provided, including：Draw hook as described above；With
And bail, there is a through hole, passed through for the lock pin of the draw hook, with the traction hook connects, wherein, the draw hook
And the bail is respectively installed to the rear portion of tractor and the front end of trailer.
Due to having used above technology, the utility model has following advantage compared with prior art：
1) the utility model sets circular flange and flexible shaft sleeve by the other end in axis of traction, it is possible to achieve draw hook
It is connected with the wide-angle of bail, improves the flexibility after draw hook is connected with bail, so that installation draw hook and bail
Tractor and trailer relative position relation it is more flexible；
2) by setting tappet in horn mouth lock space, tappet is promoted the utility model by the end of bail, around
One axle rotates and then controls lock pin to be moved between accommodation space and lock space, due to the displacement of lock pin and turning for tappet
Dynamic angle is relevant, it is thereby achieved that the upper extension of bail special angle is hung with de-, and is also prevented from lock pin and is anticipated by bail
It is outer shake-up and fall；
3) the utility model is by setting the shape of lock pin so that the gap phase between lock pin and bail through-hole wall
To smaller, impulsive force between lock pin and bail is reduced with this, and under bail angle of inclination, bail can be increased and led to
The contact area of the lock pin of hole inwall, and then enable draw hook to bear bigger tractive force so that draw hook has longer
Service life.
Brief description of the drawings
The technical solution of the utility model is described in detail below in conjunction with the drawings and specific embodiments, so that this reality
Become apparent with new characteristic and advantage.
Fig. 1 is the stereogram according to the draw-gear of the embodiment of the utility model one；
Fig. 2 is the right view according to the draw-gear of the embodiment of the utility model one；
Fig. 3 is the right pseudosection according to the draw-gear of the embodiment of the utility model one；
Fig. 4 A are the right view according to another state of the draw hook of the embodiment of the utility model one；
Fig. 4 B are the right view according to the another state of the draw-gear of the embodiment of the utility model one；
Fig. 5 A are the right view according to another state of the draw hook of the embodiment of the utility model one；
Fig. 5 B are the main view fragmentary cross-sectional view according to another state of the draw hook of the embodiment of the utility model one；
Fig. 5 C are the partial perspective view according to another state of the draw hook of the embodiment of the utility model one；
Fig. 6 is the exploded view according to the draw hook of the embodiment of the utility model one；
Fig. 7 is the stereogram according to the axis of traction of the embodiment of the utility model one；
Fig. 8 is the bell-mouthed stereogram according to the embodiment of the utility model one；
Fig. 9 is the stereogram according to the drive mechanism of the embodiment of the utility model one；
Figure 10 is a kind of schematic diagram of connection angle of draw hook and bail according to the embodiment of the utility model one；
Figure 11 is the schematic diagram according to the axis of traction of the embodiment of the utility model one；
Figure 12 is according to the draw hook of the embodiment of the utility model one and the schematic diagram of bail another kind connection angle；
Figure 13 is the schematic diagram according to the draw hook with cylindricality lock pin of the utility model embodiment；
Figure 14 is the schematic diagram according to the draw hook with arc lock pin of the utility model embodiment；
Figure 15 is the schematic diagram according to the draw hook of another state with arc lock pin of the utility model embodiment.
Reference
The cylindrical portion of 1 axis of traction 42
The recess of 11 first extension 43
111 first through hole, 691 first round flange
112 second through hole, 692 second round flange
The bearing block of 12 second extension 61
The installing plate of 121 first through hole 693 first
The installing plate of 13 first axle 694 second
The axle sleeve of the other end 695 first of 14 axis of traction
The axle sleeve of 141 fifth hole 696 second
The base assembly of 142 groove 7
The bail of 2 horn mouth 9
The through hole of 21 openend 91
The control stick of 22 closing in end 37
221 end faces 38 connect hole position
The indicator of 222 third through-hole 39
23 lock spaces
3 drive mechanisms
31 drive mechanism shells
311 accommodation spaces
32 tappets
321 second axis
33 handles
35 springs
4 lock pins
41 curved portions
Embodiment
Detailed description will be provided to embodiment of the present utility model below.It is specific that although the utility model will combine some
Embodiment is illustrated and illustrated, but should be noted that the utility model is not merely confined to these embodiments.
On the contrary, the modification carried out to the utility model or equivalent substitution, all should cover and work as in right of the present utility model
In.
In addition, in order to better illustrate the utility model, given in embodiment below numerous specific
Details.It will be understood by those skilled in the art that without these details, the utility model can equally be implemented.In other
In example, it is not described in detail for known structure and part, in order to highlight purport of the present utility model.
With reference to Fig. 1 to Fig. 9, the draw-gear of the embodiment of the utility model one and the structure of draw hook are described.According to Fig. 1
The stereogram of the draw-gear of the embodiment of the utility model one；Fig. 2 is the draw-gear according to the embodiment of the utility model one
Right view；Fig. 3 is the right pseudosection according to the draw-gear of the embodiment of the utility model one；Fig. 4 A are according to the utility model
The right view of another state of the draw hook of one embodiment；Fig. 4 B be according to the draw-gear of the embodiment of the utility model one again
The right view of one state；Fig. 5 A are the right view according to another state of the draw hook of the embodiment of the utility model one；Fig. 5 B are
According to the main view fragmentary cross-sectional view of another state of the draw hook of the embodiment of the utility model one；Fig. 5 C are according to the utility model
The partial perspective view of another state of the draw hook of one embodiment；Fig. 6 is the draw hook according to the embodiment of the utility model one
Exploded view；Fig. 7 is the stereogram according to the axis of traction of the embodiment of the utility model one；Fig. 8 is to be implemented according to the utility model one
The bell-mouthed stereogram of example；Fig. 9 is the stereogram according to the drive mechanism of the embodiment of the utility model one.
As shown in Figure 1 to 9, the utility model provides a kind of draw-gear, and draw-gear includes draw hook and with logical
The bail 9 in hole 91.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 a 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
Mouth penetrates between end 22.The opening size of openend 21 is more than the opening size at closing in end 22.Openend 21 is set backwards to axis of traction 1
Put, and openend 21 is open backwards to axis of traction 1.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 pass through the attachment structures such as bolt and axis of traction 1
Two extensions 11,12 connect.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, which has drive device and accommodated, drives
The drive mechanism shell 31 of dynamic device.Drive mechanism shell 31 also forms an accommodation space 311.The accommodation space 311 passes through
One through hole 111,121 and third through-hole 222 connect with the lock space 23 of horn mouth 2.Drive device is used to control lock pin 4 holding
Moved between being empty between 31 and lock space 23.
Drive mechanism 3 also sets up a tappet 32.Second through hole 112 of tappet 32 through the first extension 11 extends to locking
Space 23, and can be rotatably mounted at around a second axis 321 in drive mechanism 3.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 the power towards lock space 23 to the lock pin 4 positioned at accommodation space 31, 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,
Control panel has hexagon through hole, and the axle portion of handle 33 has the profile of hexagon, and the axle portion of handle 33 passes through six sides of control panel
Shape through hole with control panel to be engaged.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 rotates, drive device is also can trigger, to apply 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 the instruction connection status of lock pin 4
Indicator 39, when draw hook is in open mode, lock pin 4 moves 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 close to 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 closed
During conjunction state (lock pin 4 passes 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 locks 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 around first through hole 111,121 can be allow to rotate horn mouth 2 and be reset to original state.
Specifically, the original state of draw hook is not connected referring to Fig. 4 A, draw hook with bail.Tappet 32 moves with lock pin
Dynamic direction is at an angle of B1.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 moves 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
Length of the radius of gear, connecting rod etc. is put to close to adjust the ratio between the rotational angle of tappet 32 and the displacement of lock pin 4
System, will not be described here.Rotational angle B1 and during the moving direction parallel to lock pin 4, lock pin 4 moves down distance 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 lock pin 4 can be locked 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, moves the lock pin 4 positioned 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 moves from bail 9
Go out, as bail 9 outwards removes, tappet 32 (is rotated by the effect of contained spring as bail 9 is moved to initial position
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, 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, so be difficult to complete bail 9 upper extension the problem of.Similarly, the utility model
The pintle hook construction of offer can also realize the de- extension of the special angle of bail 9.Special angle described herein is represented when traction
The axis direction of ring 9 and the angle between the moving direction of lock pin 4 are more than an angle (such as 30 degree).Meanwhile tappet 32
Setting be also prevented from lock pin 4 and touched and fallen by bail 9 is unexpected.
The axis of traction 1 of another embodiment of the utility model is described with reference to Figure 10 to Figure 12.Figure 10 is according to this practicality
A kind of schematic diagram of 9 connection angle of draw hook and bail of a new embodiment；Figure 11 is to be implemented according to the utility model one
The schematic diagram of the axis of traction 1 of example；Figure 12 is the 9 another joint angle of draw hook and bail according to the embodiment of the utility model one
The schematic diagram of degree.
In the present embodiment, one end installation horn mouth 2 and drive mechanism 3 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 691 and second round flange 692 of flange has cyclic structure.The side of 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 first round 691 corresponding annular via of flange.Second installing plate 694 has and the second round method
Annular via corresponding to orchid 692.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 are connected to the annular via inwall of the second installing plate 694.First installing plate 693
It is located at the both sides of bearing block 61 with the second installing plate 694, and is connected by bearing block 61.Bearing block 61 is used to connect the He of axis of traction 1
Trailer.
Flexible shaft sleeve 695,696 is a kind of material of special high intensity, can ensure the first round flange 691 and first
Connection between installing plate 693, between the second round installing plate 694 of flange 692 and second, while there is good toughness.The
It 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 10 and figure
12.In Fig. 10, 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. 12, 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 other end that the present embodiment passes through in axis of traction 1 sets 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 that installation draw hook and bail 9
Trailer and tractor relative position relation it is more flexible.For example, when trailer and tractor installation draw hook and bail 9
When position height difference is larger, the connection (such as Figure 12) of draw hook and bail 9 can also be realized.In another example trailer and tractor
It can realize that wide-angle turns (such as Figure 10) in motion.
The lock pin of the utility model embodiment is described with reference to Figure 13 to Figure 15.Figure 13 is to be implemented according to the utility model
The schematic diagram of the draw hook with cylindricality lock pin of example；Figure 14 is to have leading for arc lock pin according to the utility model embodiment
Draw the schematic diagram of hook；Figure 15 is the signal according to the draw hook of another state with arc lock pin of the utility model embodiment
Figure.
Referring first to Figure 14 and Figure 15.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, drive mechanism 3 controls lock pin
4 enter lock space 23, and pass 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 the axial direction of pin 4 (or moving direction), the distance t1 of the outer wall of first 41 and the inwall of through hole 91 of bail 9 is less than second
The distance t of the outer wall in portion 42 and the inwall of through hole 91 of bail 9.Alternatively, the axial height of first 41 is equal to bail 9
Axial height.
Contrasted with the cylindrical lock pin 4 shown in Figure 13, when cylindrical lock pin 4 passes through the through hole 91 of bail 9, with leading
The gap drawn between the inwall of through hole 91 of ring 9 is larger, in use, due to the presence in gap and the change of car speed
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 14 and Figure 15 are with leading
It is relatively small to draw the gap of the inwall of through hole 91 of ring 9, the impulsive force between lock pin 4 and bail 9 can be reduced.
Further contrasted with the cylindrical lock pin 4 shown in Figure 13, using in general cylinder lock pin, in such as Figure 13 and
Under Figure 15 heeling condition, the contact between bail 9 and lock pin 4 is linear contact, contact area very little, and contact point is born very
Big power, lock pin 4 are 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 14 and Figure 15 exist
As Figure 13 and Figure 15 heeling condition under, can keep contacting well with the inwall of through hole 91 of bail 9, connect with larger
Contacting surface, bigger tractive force can be born, make lock pin 4 and bail 9 that there is longer service life.
Due to having used above technology, the utility model has following advantage compared with prior art：
1) the utility model sets circular flange and flexible shaft sleeve by the other end in axis of traction, it is possible to achieve draw hook
It is connected with the wide-angle of bail, improves the flexibility after draw hook is connected with bail, so that installation draw hook and bail
Trailer and trailer relative position relation it is more flexible；
2) by setting tappet in horn mouth lock space, tappet is promoted the utility model by the end of bail, around
One axle rotates and then controls lock pin to be moved between accommodation space and lock space, due to the displacement of lock pin and turning for tappet
Dynamic angle is relevant, it is thereby achieved that the upper extension of bail special angle is hung with de-, and is also prevented from lock pin and is anticipated by bail
It is outer shake-up and fall；
3) the utility model is by setting the shape of lock pin so that the gap phase between lock pin and bail through-hole wall
To smaller, impulsive force between lock pin and bail is reduced with this, and under bail angle of inclination, bail can be increased and led to
The contact area of the lock pin of hole inwall, and then enable draw hook to bear bigger tractive force so that draw hook has longer
Service life.
It the above is only concrete application example of the present utility model, do not form any limit to the scope of protection of the utility model
System.In addition to the implementation, the utility model can also have other embodiment.It is all to be formed using equivalent substitution or equivalent transformation
Technical scheme, all fall within the utility model it is claimed within the scope of.
Claims (6)
1. a kind of draw hook, it is characterised in that the draw hook passes through a bail with through hole (91) by a lock pin (4)
(9) to be connected with the bail (9), the draw hook includes：
Axis of traction (1), the axis of traction (1) include the first round flange (691), the 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 horn mouth (2), the first round flange (691) it is another
Side is connected by flexible shaft sleeve (695) with first installing plate (693)；
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) connects；
First installing plate (693) and second installing plate (694) are located at the bearing block (61) both sides, and by described
Bearing block (61) connects.
2. draw hook as claimed in claim 1, it is characterised in that first installing plate (693) has and the described first circle
Annular via corresponding to type flange (691)；Second installing plate (694) has corresponding with the described second round flange (692)
Annular via.
3. draw hook as claimed in claim 2, it is characterised in that
The side of the flexible shaft sleeve (695) is connected to the inwall of the described first round flange (691), the flexible shaft sleeve
(695) opposite side is connected to the annular via inwall of first installing plate (693)；
The side of the flexible shaft sleeve (696) is connected to the inwall of the described second round flange (692), the flexible shaft sleeve
(696) opposite side is connected to the annular via inwall of second installing plate (694).
4. draw hook as claimed in claim 1, it is characterised in that with perpendicular to the axis of plane where the bearing block (61)
On the basis of, in the plane perpendicular to the lock pin (4) moving direction, between the axis and the datum axis of bail (9)
Maximum angle A1 is 90 degree to 100 degree.
5. draw hook as claimed in claim 1, it is characterised in that with perpendicular to the axis of plane where the bearing block (61)
On the basis of, parallel to the lock pin (4) moving direction and in the plane of plane where the bearing block (61), lead
It is 30 degree to 45 degree to draw the maximum angle A2 between the axis and the datum axis of ring (9).
A kind of 6. draw-gear, it is characterised in that including：
Draw hook as described in any one of claim 1 to 5；And
Bail (9), there is a through hole (91), passed through for the lock pin (4) of the draw hook, 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 |
|---|---|---|---|
| CN201621386985.7U CN206633733U (en) | 2016-12-16 | 2016-12-16 | Draw hook and draw-gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621386985.7U CN206633733U (en) | 2016-12-16 | 2016-12-16 | Draw hook and draw-gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206633733U true CN206633733U (en) | 2017-11-14 |
Family
ID=60260320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621386985.7U Active CN206633733U (en) | 2016-12-16 | 2016-12-16 | Draw hook and draw-gear |
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| Country | Link |
|---|---|
| CN (1) | CN206633733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739882A (en) * | 2016-12-16 | 2017-05-31 | 约斯特（中国）汽车部件有限公司 | Draw hook and draw-gear |
-
2016
- 2016-12-16 CN CN201621386985.7U patent/CN206633733U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739882A (en) * | 2016-12-16 | 2017-05-31 | 约斯特（中国）汽车部件有限公司 | Draw hook and draw-gear |
| CN106739882B (en) * | 2016-12-16 | 2023-10-03 | 约斯特（中国）汽车部件有限公司 | Traction hook and traction device |
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