CN206485327U - Draw-gear - Google Patents
Draw-gear Download PDFInfo
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- CN206485327U CN206485327U CN201720148052.2U CN201720148052U CN206485327U CN 206485327 U CN206485327 U CN 206485327U CN 201720148052 U CN201720148052 U CN 201720148052U CN 206485327 U CN206485327 U CN 206485327U
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Abstract
The utility model is related to a kind of draw-gear for being used to pull vehicle.Draw-gear includes supporting chassis；Swing arm, one end of swing arm is rotated with supporting chassis by rotating shaft and is connected, enable swing arm the other end closer or far from supporting chassis, when the other end is away from supporting chassis, swing arm is in deployed condition, when the other end is close to supporting chassis, swing arm is in retracted state, swing arm during in deployed condition is used for the vehicle wheel rotation for driving vehicle, pulls vehicle；Drive mechanism, is connected with swing arm driving, and drive mechanism can drive swing arm to horizontally rotate that swing arm is switched between retracted state and deployed condition around rotating shaft；Rolling assembly, is arranged on the sidepiece on supporting chassis, when pulling vehicle, and rolling assembly can stop that wheel is contacted with supporting the sidepiece on chassis.Draw-gear of the present utility model, can rotate to pull vehicle, it is not necessary to which draw-gear is connected with vehicle, operating process is simple, time saving and energy saving by swing arm direct drive of wheel.
Description
Technical field
The utility model is related to pulling equipment technical field, and in particular to a kind of draw-gear.
Background technology
It is general when vehicle losing power or operational capacity or in carwash field, field of automobile repair or safety inspection field
Vehicle is drawn to predetermined position all over using draw-gear.At present, the draw-gear generally used typically uses " people " font
The rigid tow bar of structure either the hard mode of traction such as straight rod type draw bar or, using steel wire cable of the one end with hook
Soft mode of traction.These draw-gears are required for artificial operation, and free-hand the anterior of vehicle that be articulated to of draw-gear is drawn
On part, the process operation for installing draw-gear is complicated, wastes time and energy.
Utility model content
The utility model embodiment provides a kind of draw-gear for being used to pull vehicle, can directly drive car by swing arm
Wheel rotates to pull vehicle, it is not necessary to which draw-gear is connected with vehicle, and operating process is simple, time saving and energy saving.
On the one hand the utility model embodiment proposes a kind of draw-gear for being used to pull vehicle, including supporting chassis；
Swing arm, one end of above-mentioned swing arm is rotated by rotating shaft with above-mentioned supporting chassis to be connected so that the other end of above-mentioned swing arm can be leaned on
Close or remote from above-mentioned supporting chassis, when the above-mentioned other end is away from above-mentioned supporting chassis, above-mentioned swing arm is in deployed condition, when upper
Above-mentioned swing arm is in retracted state when stating the other end close to above-mentioned supporting chassis, above-mentioned swing arm during in deployed condition be used for
The wheel peripheral surface of above-mentioned vehicle contacts to drive the vehicle wheel rotation of above-mentioned vehicle, pulls above-mentioned vehicle；Drive mechanism, it is and upper
Swing arm driving connection is stated, above-mentioned drive mechanism can drive above-mentioned swing arm to horizontally rotate to cause above-mentioned swing arm around above-mentioned rotating shaft
Switch between retracted state and deployed condition；Rolling assembly, is arranged on the sidepiece on above-mentioned supporting chassis, is pulling above-mentioned vehicle
When, above-mentioned rolling assembly can stop that above-mentioned wheel and the sidepiece on above-mentioned supporting chassis are contacted.
According to the one side of the utility model embodiment, above-mentioned rolling assembly includes being arranged on above-mentioned supporting chassis
Fixing axle and the roller being articulated in above-mentioned fixing axle.
According to the one side of the utility model embodiment, above-mentioned swing arm includes front swing arm and rear-swing arm, and to be pulled is upper
When the wheel for stating vehicle is between the above-mentioned front swing arm of deployed condition and above-mentioned rear-swing arm, above-mentioned rear-swing arm is above-mentioned for driving
The vehicle wheel rotation of vehicle.
According to the one side of the utility model embodiment, above-mentioned drive mechanism is used for after driving above-mentioned front swing arm and being above-mentioned
Swing arm is rotated simultaneously, or, above-mentioned drive mechanism is used to drive above-mentioned front swing arm or above-mentioned rear-swing arm individually to rotate.
According to the one side of the utility model embodiment, above-mentioned drive mechanism is telescoping mechanism, and above-mentioned telescoping mechanism leads to
Above-mentioned horizontal revolving motion is made in the above-mentioned swing arm of telescopic drive for crossing itself.
According to the one side of the utility model embodiment, above-mentioned telescoping mechanism is hydraulic cylinder or electric pushrod.
According to the one side of the utility model embodiment, the sidepiece on above-mentioned supporting chassis is provided with withdrawal limiting section, on
When stating swing arm in retracted state, above-mentioned withdrawal limiting section is located between above-mentioned swing arm and above-mentioned supporting chassis to separate above-mentioned pendulum
Arm and above-mentioned supporting chassis.
According to the one side of the utility model embodiment, above-mentioned withdrawal limiting section includes taking turns with the outer surface of above-mentioned swing arm
The receiving slit that exterior feature matches.
According to the one side of the utility model embodiment, the sidepiece on above-mentioned supporting chassis is provided with expansion limiting section, on
State expansion limiting section to be arranged on the mobile route of above-mentioned swing arm, for limiting position when above-mentioned swing arm is in above-mentioned deployed condition
Put.
According to the one side of the utility model embodiment, above-mentioned expansion limiting section includes setting in wedge-shaped slot, above-mentioned swing arm
It is equipped with the wedge matched with above-mentioned wedge-shaped slot.
According to the one side of the utility model embodiment, above-mentioned swing arm includes armed lever and covered along the axial direction of above-mentioned armed lever
The tumbler on above-mentioned armed lever is located at, above-mentioned tumbler can be rotated around the axis of above-mentioned armed lever, energy during above-mentioned vehicle wheel rotation
Above-mentioned tumbler is enough actuated to rotate.
According to the one side of the utility model embodiment, above-mentioned tumbler is bearing or nylon sleeve.
According to the one side of the utility model embodiment, the front end on above-mentioned supporting chassis is provided with tractive unit.
According to the one side of the utility model embodiment, the rear end on above-mentioned supporting chassis is provided with walking wheel assembly.
The draw-gear provided according to the utility model embodiment, it includes being capable of the swing arm of direct drive of wheel.Swing arm
It is arranged on supporting chassis, can deploys in the presence of drive mechanism and be in contact automatically with wheel, and in treating towing truck
State, it is not necessary to human assistance attended operation, it is easy to operate, it is time saving and energy saving.In vehicle wheel rotation traveling process, rolling assembly can
To stop that wheel is directly contacted with supporting chassis, it is to avoid wheel directly contacts generation friction with supporting chassis and causes wheel to shake
Pendulum, the situation for causing towing work not smoothly complete.
Brief description of the drawings
The feature, advantage and technique effect of the utility model exemplary embodiment described below with reference to the accompanying drawings.
Fig. 1 is the draw-gear driving moment view of the utility model embodiment.
Fig. 2 is the axonometric schematic diagram of the draw-gear of the utility model embodiment.
Fig. 3 is the partial enlarged drawing at A in Fig. 2.
Fig. 4 is the front swing arm structural representation of the draw-gear of the utility model embodiment.
Fig. 5 is the schematic top plan view of the draw-gear of the utility model embodiment.
Fig. 6 is B-B view enlarged diagrams in Fig. 5.
Fig. 7 is C-C view enlarged diagrams in Fig. 5.
Fig. 8 is D-D view enlarged diagrams in Fig. 5.
Fig. 9 is the use state schematic diagram of the draw-gear of the utility model embodiment.
Figure 10 is E-E view enlarged diagrams in Fig. 9.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to actual ratio.
Embodiment
Embodiment of the present utility model is described in further detail with reference to the accompanying drawings and examples.Following examples
The detailed description and the accompanying drawings be used to exemplarily illustrate principle of the present utility model, but can not be used for limiting model of the present utility model
Enclose, i.e., the utility model is not limited to described embodiment.
In description of the present utility model, it is necessary to explanation, unless otherwise indicated, " some " be meant that one or
Person more than one；" multiple " are meant that two or more；Term " on ", " under ", "left", "right", " interior ", " outer ", " preceding
End ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be based on orientation shown in the drawings or position relationship,
It is for only for ease of description the utility model and simplifies description, rather than indicates or imply that the device or element of meaning must have
Specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
As shown in figure 1, the vehicle that the draw-gear 1 of the utility model embodiment is used to pull under non-power state advances.
When pulling vehicle using draw-gear 1, first draw-gear 1 is positioned on the ground of the lower section of vehicle chassis, draw-gear 1
Swing arm 2 is contacted after deploying with the peripheral surface of wheel 99.Then the drive device for draw-gear 1 being connected into outside (is for example drawn
Car).Drive device drives the wheel 99 of vehicle to roll by the swing arm 2 of draw-gear 1, so that whole vehicle is in support surface
Advanced on (such as ground).
As shown in Fig. 2 the draw-gear 1 of the utility model embodiment includes supporting chassis 3.Support chassis 3 include front end,
Rear end and interlude.The front end on supporting chassis 3 is provided with tractive unit 4, and rear end is provided with walking wheel assembly 5.External drive is filled
Put and driving force is applied to draw-gear 1 by tractive unit 4.Walking wheel assembly 5 can support draw-gear 1, and reduce traction dress
Put 1 moving resistance so that dragging draw-gear 1 move when it is more laborsaving, lifted ease of use.
The tractive unit 4 of the present embodiment includes what is be arranged on the connecting shaft 41 supported on chassis 3 and be pivotally connected with connecting shaft 41
Guiding piece 42.The front end on supporting chassis 3 is provided with the two pairs of supporting plates 31 stretched out.Supporting plate 31 is arc.Two pairs of supports
Plate 31 is symmetrical arranged with the axis 32 for supporting chassis 3.A connecting shaft 41 is provided with each supporting plate 31.Guiding piece 42 is wrapped
Two protuberances for including connecting portion and being disposed side by side on connecting portion.Connecting portion is used to be connected with external driver device.It is prominent
Go out portion to be pivotally connected with connecting shaft 41 so that guiding piece 42 can be rotated around connecting shaft 41 on the whole, facilitate operating personnel's adjustment company
The position of socket part, is connected with facilitating with external driver device.
In one embodiment, the front end on supporting chassis 3 sets more than three pairs of supporting plate 31.Set in each pair supporting plate 31
A connecting shaft 41 is equipped with, or connecting shaft 41 can be one whole axle, while being punctured into all supporting plates 31, so as to be lifted
The rigidity of tractive unit 4, so that draw-gear 1 bears bigger tractive force, draw-gear 1 can drive bigger car of conducting oneself with dignity
.
The walking wheel assembly 5 of the present embodiment includes two roller frames 51 with the supporting rear end of chassis 3 by mode connects for screw.
Two roller frames 51 are symmetrical arranged with the axis 32 for supporting chassis 3, so that the stress equalization in 1 use state of draw-gear,
Ensure that the position on supporting chassis 3 is stable.Two disk rollers 52 are provided with each roller frame 51, the fulcrum with support surface is added
Number, lifts the positional stability and bearing capacity of whole draw-gear 1.When draw-gear 1 is in use state, only
The outer surface of disk roller 52 is directly contacted with support surface, reduces the frictional resistance between draw-gear 1 and support surface.
In one embodiment, the rear end on supporting chassis 3 can only set and install one on a roller frame 51, roller frame 51
The individual disk roller 52 being relatively large in diameter.The rear end on supporting chassis 3 can also be set on the roller frame 51 more than two, each roller frame 51
Disk roller 52 more than one or two is set.
The swing arm 2 of the draw-gear 1 of the present embodiment also includes two front swing arms 21 for being arranged on the interlude on supporting chassis 3
With two rear-swing arms 22.Two front swing arms 21 or two rear-swing arms 22 are symmetrical arranged with the axis 32 for supporting chassis 3.Two
Front swing arm 21 and two rear-swing arms 22 are connected by rotating shaft 98 with supporting chassis 3.The axis vertical support chassis of rotating shaft 98
3.Two front swing arms 21 and two rear-swing arms 22 can rotate around rotating shaft 98 and make horizontal revolving motion, to cause front swing arm
21 or rear-swing arm 22 can switch between retracted state (as illustrated in fig. 2 or fig. 5) and deployed condition (as shown in Figure 9).Before
Swing arm 21 or rear-swing arm 22 from deployed condition switch to retracted state when, front swing arm 21 or rear-swing arm 22 are transported close to supporting chassis 3
It is dynamic, on the contrary, from retracted state switch to deployed condition when, front swing arm 21 or rear-swing arm 22 are moved away from supporting chassis 3.Forward swing
When arm 21 and rear-swing arm 22 are in retracted state, the axis 32 of the axis of front swing arm 21 and rear-swing arm 22 with supporting chassis 3
It is parallel.When front swing arm 21 and rear-swing arm 22 are in deployed condition, the axis of front swing arm 21 and rear-swing arm 22 is with supporting chassis 3
Axis 32 is vertical.
When pulling vehicle using the draw-gear 1 of the utility model embodiment, draw-gear 1 is being placed into vehicle bottom
After on support surface below disk, operation front swing arm 21 and rear-swing arm 22 are transitioned into deployed condition from retracted state, so that forward swing
The wheel 99 of vehicle is clipped between the two by arm 21 and rear-swing arm 22.When driving draw-gear 1 to move, rear-swing arm 22 is pointed to
The wheel 99 of vehicle between front swing arm 21 and rear-swing arm 22 applies driving force and rotated with actuating wheel 99, and then pulls whole car
Advance.The wheel 99 of vehicle between front swing arm 21 and rear-swing arm 22 is limited by front swing arm 21 and rear-swing arm 22, no
Easily occur unexpected turn to, it is ensured that vehicle is moved along projected route, smoothly completes towing work.It is drawn to when by towed vehicle
Behind precalculated position, front swing arm 21 can buffer the inertia of vehicle so that vehicle stops at pre-position, it is to avoid occur car slipping
Situation.After vehicle comes to a complete stop, front swing arm 21 and rear-swing arm 22 are transitioned into retracted state to discharge wheel 99 from deployed condition.Finally
Draw-gear 1 is pulled away from under-vehicle, then goes to pull next vehicle.
The front swing arm 21 of the present embodiment is identical with the structure of rear-swing arm 22, therefore only describes the knot of front swing arm 21 herein
Structure.As shown in Fig. 4, Fig. 6, front swing arm 21 include be connected with rotating shaft 98 connection end 6, with being connected the arm that end 6 is connected
Bar 7 and the tumbler 8 being set on armed lever 7.Connection end 6 is tabular.Counterbore is provided with the connection end 6 of tabular.Branch
Hold and be provided with pin-and-hole on chassis 3.Axle sleeve letter is provided with pin-and-hole.Rotating shaft 98 is inserted in counterbore and shaft sleeve with by the He of front swing arm 21
Supporting chassis 3 is connected.Shaft sleeve is protected to pin-and-hole formation, it is to avoid rotating shaft 98 is directly contacted and the pin-and-hole that weares and teares with pin-and-hole.Arm
Bar 7 is direct rod shape.Tumbler 8 is bearing or nylon sleeve.At least one bearing or nylon sleeve set are connected to the arm of direct rod shape
After on bar 7, the screw with back-up ring is installed in the free end of armed lever 7, urgent screw is to cause back-up ring by bearing or nylon
Sleeve is compressed, it is to avoid bearing or nylon sleeve come off away from armed lever 7.
In addition, when the driving moment 99 of rear-swing arm 22 is rotated, the wheel 99 of rotation can drive pacifies on the armed lever 7 of rear-swing arm 22
The bearing or nylon sleeve of dress are rotated, so as to reduce resistance when wheel 99 is rotated.Because if between wheel 99 and armed lever 7
When the component of the vertical support surface of frictional force is excessive, the component can cause the vertical support surface of armed lever 7 to move and bend
Deformation, or even depart from the connection status on supporting chassis 3, so bearing or nylon sleeve can avoid wheel 99 directly and armed lever
7 rub, so as to be played a protective role to armed lever 7, it is to avoid occur above-mentioned unfavorable condition, extend the service life of armed lever 7.
As shown in Fig. 2 the draw-gear 1 of the present embodiment also includes drive mechanism 9.The drive mechanism 9 of the present embodiment is liquid
Cylinder pressure.Connection end 6 of the two ends of hydraulic cylinder respectively with front swing arm 21 and rear-swing arm 22 is connected by pin.Front swing arm 21 is with after
When swing arm 22 is in retracted state, the axis of front swing arm 21 and rear-swing arm 22 is substantially parallel with the axis of hydraulic cylinder, such hydraulic pressure
Cylinder synchronous respectively can drive front swing arm 21 and rear-swing arm 22, to cause front swing arm 21 and rear-swing arm 22 synchronous in final exhibition
Open state or retracted state.By external hydraulic pumping plant driving hydraulic cylinder stretching motion to control front swing arm 21 and rear-swing arm 22
Take down the exhibits.When front swing arm 21 and rear-swing arm 22 are in deployed condition, hydraulic cylinder is that rear-swing arm 22 provides support force to overcome car
The active force of 99 pairs of rear-swing arms 22 is taken turns, while also avoiding rear-swing arm 22 from surprisingly being withdrawn under the reaction force acts of wheel 99.
In one embodiment, two connecting for front swing arm 21 are divided between end 6 or the connection end 6 of two rear-swing arms 22
Hydraulic cylinder is not provided with it.Two independent hydraulic cylinders can each work independently, it is ensured that be put after two front swing arms 21 and/or two
The synchronous expansion of arm 22 or withdrawal.
The hydraulic cylinder of the present embodiment is oil cylinder.Supporting is provided with oil piping system on chassis 3, to facilitate outside oil pump station to oil
Oil supply cylinder.
In one embodiment, drive mechanism 9 can also be electric pushrod or other can realize the flexible of identical function
Mechanism.
As shown in Figure 5, Figure 7, the supporting chassis 3 of the present embodiment is provided with withdrawal on the sidepiece of front end and rear end
Limiting section 10.When front swing arm 21 and rear-swing arm 22 are in retracted state, withdraw limiting section 10 and be located at front swing arm 21 and supporting bottom
Chassis 3 and front swing arm 21 or rear-swing arm 22 are supported to separate, it is to avoid front swing arm 21 between disk 3 or rear-swing arm 22 and supporting chassis 3
Or rear-swing arm 22 is crossed optimal retrieving position and collided friction with supporting chassis 3, protection supports chassis 3, the and of front swing arm 21
Rear-swing arm 22.The receiving slit that limiting section 10 includes matching with the outer surface of front swing arm 21 or rear-swing arm 22 is withdrawn, so as to protect
The contact area of front swing arm 21 or rear-swing arm 22 and receiving slit of the card in retracted state is bigger, and laminating is more preferable so that in receipts
Front swing arm 21 and the position of rear-swing arm 22 under the state of returning is more stable.The opening size for withdrawing the receiving slit of limiting section 10 is less than or equal to
The maximum radial dimension of front swing arm 21 or rear-swing arm 22.Withdrawing limiting section 10 can be extended by the sidepiece for supporting chassis 3
Convex to form or the individual components being fixedly connected are installed with the sidepiece for supporting chassis 3.The He of front swing arm 21 of the present embodiment
The armed lever 7 of rear-swing arm 22 and the section of tumbler 8 are circle, and the cross section of receiving slit is less than or equal to 1/2nd circumference
Circular arc.
As shown in Fig. 3, Fig. 5, expansion limiting section 11 is provided with the sidepiece of the interlude on the supporting chassis 3 of the present embodiment.
Expansion limiting section 11 is arranged on the mobile route of front swing arm 21 or rear-swing arm 22.When front swing arm 21 or rear-swing arm 22 are from withdrawal
State to deployed condition transition and touch expansion limiting section 11 when, expansion limiting section 11 can limit front swing arm 21 or rear-swing arm
22 continue to deploy, to cause front swing arm 21 and rear-swing arm 22 to be in predetermined expanded position, it is to avoid front swing arm 21 or rear-swing arm 22 are opened up
Cross predetermined expanded position and cause that the wheel 99 of vehicle can not be accommodated between front swing arm 21 and rear-swing arm 22 or lead in open position
Cause rear-swing arm 22 can not and outer surface that cause tumbler 8 rear-swing arm 22 on vertical with supporting the axis 32 on chassis 3 not
It can in the axial direction completely attach to, but occur between the part of part contact wheel 99 and wheel 99 with the outer surface of wheel 99
Gap.When the outer surface of the tumbler 8 on rear-swing arm 22 can not in the axial direction be completely attached to the outer surface of wheel 99,
Rear-swing arm 22 power that wheel 99 applies occurs skew or stress concentration.The power that wheel 99 applies occurs partially rear-swing arm 22
During shifting, in the rotation process of driving moment 99, wheel 99 can be turned to, it is impossible to along straight line moving, and then cause towing work not
It is smooth, or even towing work can not be carried out.When there is stress concentration to the power that wheel 99 applies on tumbler 8 in rear-swing arm 22,
It may result in rear-swing arm 22 to occur bending and deformation, damage rear-swing arm 22.Therefore, expansion limiting section 11 ensures that rear-swing arm 22 deploys
To expansion is stopped during predetermined expanded position, now rear-swing arm 22 and the axis 32 for supporting chassis 3 are perpendicular, it is ensured that tumbler 8
Outer surface and wheel 99 is completely attached on the axial direction of wheel 99 so that the driving moment 99 of rear-swing arm 22 is substantially along before straight line
Enter, the stress equalization of rear-swing arm 22, it is to avoid above-mentioned harmful effect.
As shown in Fig. 3, Figure 10, the expansion limiting section 11 of the present embodiment includes wedge-shaped slot 111.The axis of wedge-shaped slot 111 with
The axis 32 on chassis 3 is supported vertically and in horizontal plane.Wedge 12 is provided with front swing arm 21 or rear-swing arm 22.In forward swing
During arm 21 or rear-swing arm 22 deploy, the wedge 12 on front swing arm 21 or rear-swing arm 22 can be docked gradually with wedge-shaped slot 111,
And finally fitted completely with wedge-shaped slot 111.Wedge 12 with wedge-shaped slot 111 during gradually coordinating, the meeting pair of wedge-shaped slot 111
Wedge 12 forms spacing, and guiding wedge 12 is docked with wedge-shaped slot 111, can be by wedge 12 so as to deploy limiting section 11
To adjust the expanded position of front swing arm 21 or rear-swing arm 22, front swing arm 21 or rear-swing arm 22 is set to be in horizontal position in deployed condition
Put.When front swing arm 21 or rear-swing arm 22 deform, for example, connect end 6 and tilt, when the free end of armed lever 7 is sagging, front swing arm 21
Or rear-swing arm 22 is not in the horizontal plane, but by the cooperation of wedge 12 and wedge-shaped slot 111, can most at last front swing arm 21 or after
Swing arm 22 is adjusted to horizontal level.In addition, expansion limiting section 11 can be formed to the front swing arm 21 or rear-swing arm 22 of deployed condition
Support, it is ensured that the position of front swing arm 21 or rear-swing arm 22 under deployed condition is stable.
The expansion limiting section 11 of the present embodiment can support the protuberance that the sidepiece on chassis 3 extends, in protuberance
Top wedge-shaped slot 111 or individual components are set, be connected by screw and the sidepiece on supporting chassis 3, in independence
Wedge-shaped slot 111 is set on part.
As shown in Fig. 3, Fig. 8, rolling assembly 13 is additionally provided with the sidepiece on the supporting chassis 3 of the present embodiment.Rolling assembly
13 are arranged between the expansion limiting section 11 of front swing arm 21 and the expansion limiting section 11 of rear-swing arm 22.Rolling assembly 13 includes fixing
Axle 131 and the roller 132 being articulated in fixing axle 131.In the present embodiment, four rolling 132 is set, increases overlay area,
Ensure that roller 132 can be in contact with wheel 99.When the driving moment 99 of rear-swing arm 22, which is rotated, advances, wheel 99 occurs once in a while
Turn to, now, the wheel 99 of steering can be in contact with roller 132 and drive roller 132 to rotate.The roller 132 of rotation can draw
Guide-car wheel 99 so that avoid wheel 99 with supporting chassis 3 directly occur hard friction, it is ensured that wheel 99 advance it is smooth, protection supporting
The sidepiece on chassis 3 is injury-free.
The width on the supporting chassis 3 of the present embodiment be less than between the inner side of the relative wheel in left and right vehicle wheel both sides 99 away from
From so as to be successfully moved in or out from under-vehicle.When front swing arm 21 and rear-swing arm 22 are in deployed condition, before two
The distance of the free end of swing arm 21 or two rear-swing arms 22 be greater than or the outside of the wheel relative equal to both sides 99 between away from
From, it is ensured that front swing arm 21 or rear-swing arm 22 can be contacted with wheel 99 completely.
When pulling vehicle using the draw-gear 1 of the utility model embodiment, first vehicle to be pulled is parked in predetermined
Region.Then the supporting chassis 3 of draw-gear 1 is shifted onto below the vehicle chassis of vehicle to be pulled.Start drive mechanism 9 so that
Obtain front swing arm 21 and rear-swing arm 22 deploys so that front swing arm 21 and rear-swing arm 22 limit wheel 99 therebetween.Treat forward swing
Arm 21 and rear-swing arm 22 are deployed into after predetermined expanded position, and tractive unit 4 and the tractor of draw-gear 1 are connected.Start
Tractor drag draw-gear 1, the driving moment 99 of rear-swing arm 22 rotate with drive vehicle advance and most at last vehicle be drawn to it is pre-
Positioning is put.Vehicle is arrived at behind precalculated position, tractor parking, under the cushioning effect of front swing arm 21, and vehicle inertia will not be made again
Moved under so that vehicle to be pulled is docked in precalculated position exactly.
After vehicle comes to a complete stop, start drive mechanism 9 front swing arm 21 and rear-swing arm 22 are withdrawn, discharge wheel 99.Treat
Front swing arm 21 and rear-swing arm 22 are completely returned to after retracted state, are started tractor and are pulled away draw-gear 1 from under-vehicle,
Then re-move to presumptive area, draw next vehicle.
In one embodiment, vehicle to be pulled first is parked in presumptive area, then by the tractive unit 4 of draw-gear 1 with
Tractor is connected, and then tractor drives draw-gear 1 and shift draw-gear 1 below the chassis of vehicle to be pulled onto,
Then the expansion operation of front swing arm 21 and rear-swing arm 22 is carried out again.
The draw-gear 1 of the present embodiment drives vehicle front-drive to pull vehicle by rear-swing arm 22.The present embodiment
Draw-gear 1 can also drive vehicle rear wheel to rotate by rear-swing arm 22, or, the draw-gear 1 of the present embodiment sets two groups
Front swing arm 21 and two groups of rear-swing arms 22, while driving the front wheels and rear wheels of vehicle to rotate.The draw-gear 1 of the present embodiment can be with
Rear-swing arm 22 is only set, can equally be rotated by rear-swing arm 22 with driving moment 99 to pull vehicle.
Although the utility model is described by reference to preferred embodiment, model of the present utility model is not being departed from
In the case of enclosing, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as not depositing
The every technical characteristic being previously mentioned in structural hazard, each embodiment can combine in any way.The utility model
It is not limited to specific embodiment disclosed herein, but all technical schemes including falling within the scope of the appended claims.
Claims (14)
1. a kind of draw-gear for being used to pull vehicle, it is characterised in that including：
Support chassis；
Swing arm, one end of the swing arm is rotated by rotating shaft with the supporting chassis to be connected so that the other end energy of the swing arm
It is enough that closer or far from the supporting chassis, when the other end is away from the supporting chassis, the swing arm is in deployed condition,
When the other end is close to the supporting chassis, the swing arm is in retracted state, and swing arm during in deployed condition is used
Contact to drive the vehicle wheel rotation of the vehicle in the wheel peripheral surface with the vehicle, pull the vehicle；
Drive mechanism, is connected with the swing arm driving, and the drive mechanism can drive the swing arm to surround the rotating shaft level
The swing arm is rotated so that between retracted state and deployed condition to switch；
Rolling assembly, is arranged on the sidepiece on the supporting chassis, and when pulling the vehicle, the rolling assembly can stop institute
The sidepiece that wheel is stated with the supporting chassis is contacted.
2. draw-gear according to claim 1, it is characterised in that the rolling assembly includes being arranged on the supporting bottom
Fixing axle on disk and the roller being articulated in the fixing axle.
3. draw-gear according to claim 1, it is characterised in that the swing arm includes front swing arm and rear-swing arm, waits to drag
When the wheel of the vehicle draged is between the front swing arm of deployed condition and the rear-swing arm, the rear-swing arm is used to drive
Move the vehicle wheel rotation of the vehicle.
4. draw-gear according to claim 3, it is characterised in that the drive mechanism be used to driving the front swing arm and
The rear-swing arm is rotated simultaneously, or, the drive mechanism is used to drive the front swing arm or the rear-swing arm individually to rotate.
5. draw-gear according to any one of claim 1 to 4, it is characterised in that the drive mechanism is telescopic machine
Structure, the telescoping mechanism makees the horizontal revolving motion by swing arm described in the telescopic drive of itself.
6. draw-gear according to claim 5, it is characterised in that the telescoping mechanism is hydraulic cylinder or electric pushrod.
7. draw-gear according to claim 1, it is characterised in that it is spacing that the sidepiece on the supporting chassis is provided with withdrawal
Portion, when the swing arm is in retracted state, the withdrawal limiting section is located between the swing arm and the supporting chassis to separate
The swing arm and the supporting chassis.
8. draw-gear according to claim 7, it is characterised in that the withdrawal limiting section includes outer with the swing arm
The receiving slit that surface profile matches.
9. draw-gear according to claim 1, it is characterised in that it is spacing that the sidepiece on the supporting chassis is provided with expansion
Portion, the expansion limiting section is arranged on the mobile route of the swing arm, and the deployed condition is in for limiting the swing arm
When position.
10. draw-gear according to claim 9, it is characterised in that the expansion limiting section includes wedge-shaped slot, the pendulum
The wedge matched with the wedge-shaped slot is provided with arm.
11. draw-gear according to claim 1, it is characterised in that the swing arm includes armed lever and along the armed lever
Axial direction be set in tumbler on the armed lever, the tumbler can be rotated around the axis of the armed lever, the wheel
The tumbler can be actuated during rotation to rotate.
12. draw-gear according to claim 11, it is characterised in that the tumbler is bearing or nylon sleeve.
13. draw-gear according to claim 1, it is characterised in that the front end on the supporting chassis is provided with tractive unit.
14. draw-gear according to claim 1, it is characterised in that the rear end on the supporting chassis is provided with road wheel
Component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720148052.2U CN206485327U (en) | 2017-02-17 | 2017-02-17 | Draw-gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720148052.2U CN206485327U (en) | 2017-02-17 | 2017-02-17 | Draw-gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206485327U true CN206485327U (en) | 2017-09-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106965635A (en) * | 2017-02-17 | 2017-07-21 | 同方威视技术股份有限公司 | Draw-gear and traction method |
| CN108725408A (en) * | 2018-07-05 | 2018-11-02 | 中山市翔实机械设备有限公司 | A kind of portable road trailer device |
-
2017
- 2017-02-17 CN CN201720148052.2U patent/CN206485327U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106965635A (en) * | 2017-02-17 | 2017-07-21 | 同方威视技术股份有限公司 | Draw-gear and traction method |
| CN108725408A (en) * | 2018-07-05 | 2018-11-02 | 中山市翔实机械设备有限公司 | A kind of portable road trailer device |
| CN108725408B (en) * | 2018-07-05 | 2021-07-23 | 中山市翔实机械设备有限公司 | Portable road trailer |
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Effective date of registration: 20181115 Address after: 101500 No. 18 Garden Road, Miyun Economic Development Zone, Beijing Co-patentee after: Nuctech Company Limited Patentee after: Tongfang Weishi Technology (Beijing) Co., Ltd. Address before: 100084 Beijing city Haidian District Shuangqing Road with Party building A block 2 layer Patentee before: Nuctech Company Limited |