CN208515318U - Traction mechanism and handling device with it - Google Patents

Abstract

The utility model provides a kind of traction mechanism and the handling device with it.Traction mechanism includes the first mounting rack, and the first mounting rack with the first installation foundation for being connected；Draw bar, the first end of draw bar is rotationally connected with the first mounting rack, the second end of draw bar and the second installation foundation are detachably connectable, reception position when draw bar is with towards distracted position when first direction traction and with towards second direction, first direction and second direction have angle；Footrest component, footrest component are connected with the first mounting rack and are disposed adjacently with the first end of draw bar, and when draw bar is located at reception position, operation footrest component can make draw bar turn to distracted position from reception position.It is not necessarily to significantly reduce the security risk of operator by manually bending over draw bar being placed in distracted position using the traction device.The structure is simple, easy to operate, using reliable.

Description

Traction mechanism and handling device with it

Technical field

The utility model relates to pulling equipment technical fields, in particular to a kind of traction mechanism and removing with it Shipping unit.

Background technique

The mechanism that existing logistics tooling vehicle generally uses front and back to draw meets fixture vehicle transhipment, but actual mechanical process needs people Work bends over, it is comparatively laborious and inconvenient to take.

Traction, which need to have, before and after fixture vehicle is connected and disconnected from function, to facilitate fixture vehicle between working condition and transition state Switching, and traction mechanism should have the ability of packing up, and can pack up when not needed, not interfere the use of fixture vehicle.Traction mechanism The extruding force when tractive force being subjected to when fixture vehicle transition accelerates in the process and deceleration, traction mechanism need to be connected using thick stick, bar class It connects, prevents fixture vehicle from advancing, forward and backward vehicle bumps against in moderating process.Traction mechanism is needed with horizontal direction steering capability, with full Cornering ability when sufficient fixture vehicle is advanced.Traction mechanism length should be greater than the 1/2 of fixture vehicle width of the carbody, prevent turning process In, the corner of forward and backward fixture vehicle is collided.Fixture vehicle is chiefly used in the transition of indoor ground grading, can have in vertical direction certain Angle, for coping with the slight out-of-flatness of flooring.

Mode of traction is cumbersome in structure before and after existing fixture vehicle and people is needed to bend over to operate, and operator directly with it is dynamic Make mechanism contacts, personal safety hidden danger is caused to operator.

Utility model content

It is existing to solve the main purpose of the utility model is to provide a kind of traction mechanism and with its handling device Traction mechanism in technology be easy to cause the problem of operator's personal safety hidden danger.

To achieve the goals above, one aspect according to the present utility model provides a kind of traction mechanism, comprising: the One mounting rack, the first mounting rack with the first installation foundation for being connected；Draw bar, the first end of draw bar and the first mounting rack Rotationally it is connected, the second end of draw bar and the second installation foundation are detachably connectable, and draw bar has towards first Distracted position when direction is drawn and reception position when with towards second direction, first direction and second direction have folder Angle；Footrest component, footrest component is connected with the first mounting rack and is disposed adjacently with the first end of draw bar, when draw bar position When reception position, operation footrest component can make draw bar turn to distracted position from reception position.

Further, the first mounting rack includes: bottom plate；First side plate, the first side plate are connected with bottom plate；Second side plate, Second side plate is connected with bottom plate and is oppositely disposed with the first side plate, and the first end of draw bar extends to the first side plate and second It is movably connected between side plate and with the first side plate and the second side plate, footrest component is connected with the first side plate and the second side plate It connects.

Further, footrest component includes: the first foot-driven lever, and the first foot-driven lever is rotatably penetrated and arranged in the first side plate and On two side plates；First block, the first block are connected with the first foot-driven lever and are located between the first side plate and the second side plate；First Reset spring, first back-moving spring are set on the first foot-driven lever, and first back-moving spring is used to apply to the first foot-driven lever and pre-tighten Power.

Further, it is provided with convex block on the surface of draw bar, when draw bar is located at reception position, the lower surface of convex block It is abutted against with the first block, operation the first foot-driven lever rotation can make the first block lift convex block up to the gravity in draw bar Effect lower protruding block is mutually separated with the first block.

Further, the end of draw bar is provided with limit plate, and the limiting slot matched with limit plate is provided on bottom plate, When convex block is mutually separated with the first block, limit plate is exited from limiting slot so that draw bar turns to distracted position.

Further, the second end of draw bar is provided with lantern ring.

Further, traction mechanism further includes locking assembly, and locking assembly includes: the second mounting rack, the second mounting rack with Second installation foundation is connected；Pendulum pin, pendulum pin are rotationally connected with the second mounting rack；Locking part, locking part and the second peace It shelves and is connected, locking part is disposed adjacently with pendulum pin, and locking part is matched with pendulum pin sells so as to put with by the of draw bar The lock position of two end lockings, and the unlocked position that operation locking part can make pendulum pin unlock the second end of draw bar.

Further, the second mounting rack includes: third side plate；4th side plate, the 4th side plate are relatively set with third side plate It sets, pendulum pin is rotatablely arranged between third side plate and the 4th side plate；5th side plate, the first end of the 5th side plate is respectively with Three side plates and the 4th side plate are connected, and have distance between the 5th side plate of part and third side plate and the lower edge of the 4th side plate Ground setting, to form the accommodation space for accommodating the second end of draw bar.

Further, the bottom of the 5th side plate offers limit hole, when pendulum pins position when lock position, the pendulum pins position of part In in limit hole.

Further, locking part includes: the second foot-driven lever, and the second foot-driven lever is rotatably penetrated and arranged in third side plate and the 4th On side plate, the second foot-driven lever is located at the inside of pendulum pin；Second block, the second block are connected with the second foot-driven lever, operation second Foot-driven lever can make the second block that there is backstop pendulum pin to continue the lock position inwardly rotated, alternatively, the second foot-driven lever of operation can make Second block, which has to put to sell, lets pass so that pendulum pin can continue the unlocked position swung.

Further, the second block is disposed adjacently with pendulum pin, and the second end of draw bar is provided with lantern ring, when draw bar It deflects when second end is inserted into the second mounting rack along first direction with movable pendulum pin and is located in lantern ring until putting the one end sold, second gear Block is as the yaw rotation of pendulum pin is to lock position.

Further, locking part further include: second back-moving spring, second back-moving spring are connected with the second foot-driven lever, the Two reset springs are used to that the second block to be made to apply pretightning force towards the outside of pendulum pin.

Further, the end of the second block offers the groove for accommodating pendulum pin.

Another aspect according to the present utility model, provides a kind of handling device, including traction mechanism, and traction mechanism is upper The traction mechanism stated, handling device include multiple barrows, and the first installation foundation includes one in two neighboring barrow Frame structure, the second installation foundation include the frame structure of another barrow.

Using the technical solution of the utility model, using the traction mechanism, operator can directly operate footrest component i.e. It may make draw bar to be located at distracted position, then realize towage.I.e. using the traction device be not necessarily to by manually bend over by Draw bar is placed in distracted position, significantly reduces the security risk of operator.The structure is simple, easy to operate, using can It leans on.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the structural schematic diagram of the first embodiment of traction mechanism according to the present utility model；

Fig. 2 shows the structural schematic diagrams of the second embodiment of traction mechanism according to the present utility model；

Fig. 3 shows the structural schematic diagram of the embodiment of draw bar according to the present utility model；

Fig. 4 shows the structural schematic diagram of the first embodiment of locking assembly according to the present utility model；

Fig. 5 shows the structural schematic diagram of the second embodiment of locking assembly according to the present utility model；

Fig. 6 shows the structural schematic diagram of the first embodiment of handling device according to the present utility model；

Fig. 7 shows the structural schematic diagram of the second embodiment of handling device according to the present utility model；

Fig. 8 shows the structural representation at the first visual angle that draw bar according to the present utility model is matched with latch assembly Figure；

Fig. 9 shows the structural representation at the second visual angle that draw bar according to the present utility model is matched with latch assembly Figure.

Wherein, the above drawings include the following reference numerals:

10, the first mounting rack；11, bottom plate；12, the first side plate；13, the second side plate；

20, draw bar；21, convex block；22, limit plate；23, lantern ring；

30, footrest component；31, the first foot-driven lever；32, the first block；33, first back-moving spring；

40, the second mounting rack；41, third side plate；42, the 4th side plate；43, the 5th side plate；431, limit hole；

50, pendulum pin；

60, locking part；61, the second foot-driven lever；62, the second block；621, groove；63, second back-moving spring；

70, barrow.

Specific embodiment

It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

It should be noted that term " first ", " second " etc. in the description and claims of this application and attached drawing It is to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that the art used in this way Language is interchangeable under appropriate circumstances, so that presently filed embodiment described herein for example can be in addition to illustrating herein Or the sequence other than those of description is implemented.In addition, term " includes " and " having " and their any deformation, it is intended that Cover it is non-exclusive include, for example, containing the process, method, system, product or equipment of a series of steps or units need not limit In step or unit those of is clearly listed, but may include be not clearly listed or for these process, methods, produce The other step or units of product or equipment inherently.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary Embodiment can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein Formula.It should be understood that it is thoroughly and complete to these embodiments are provided so that disclosure herein, and these are shown The design of example property embodiment is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand The big thickness of layer and region, and make that identical device is presented with like reference characters, thus omission retouches them It states.

In conjunction with shown in Fig. 1 to Fig. 9, embodiment according to the present utility model provides a kind of traction mechanism.

Specifically, as shown in Figure 1 to Figure 3, which includes the first mounting rack 10, draw bar 20 and footrest component 30.First mounting rack 10 with the first installation foundation for being connected.The first end of draw bar 20 and the first mounting rack 10 can be rotated Ground is connected, and the second end of draw bar 20 and the second installation foundation are detachably connectable, and draw bar 20 has towards first party Reception position when to distracted position when traction and with towards second direction, first direction and second direction have angle. Footrest component 30 is connected with the first mounting rack 10 and is disposed adjacently with the first end of draw bar 20, receives when draw bar 20 is located at Receive position when, operation footrest component 30 draw bar 20 can be made to turn to distracted position from reception position.

In the present embodiment, using the traction mechanism, operator, which can directly operate footrest component, may make draw bar Positioned at distracted position, towage is then realized.It is not necessarily to using the traction device by manually bending over for draw bar to be placed in Distracted position significantly reduces the security risk of operator.The structure is simple, easy to operate, using reliable.Wherein, first Direction can be horizontally oriented, and second direction can be vertical direction, and setting without using draw bar so that when being led in this way When drawing, the space occupied of draw bar can reduce.

Specifically, the first mounting rack 10 includes bottom plate 11, the first side plate 12 and the second side plate 13.First side plate 12 and bottom plate 11 are connected.Second side plate 13 is connected with bottom plate 11 and is oppositely disposed with the first side plate 12, and the first end of draw bar 20 is prolonged It extends between the first side plate 12 and the second side plate 13 and is movably connected with the first side plate 12 and the second side plate 13, footrest component 30 are connected with the first side plate 12 and the second side plate 13.Setting can effectively improve the connection reliability of draw bar 20 in this way.

Footrest component 30 includes the first foot-driven lever 31, the first block 32 and first back-moving spring 33.First foot-driven lever 31 can It is rotationally arranged on the first side plate 12 and the second side plate 13.First block 32 is connected with the first foot-driven lever 31 and is located at first Between side plate 12 and the second side plate 13.First back-moving spring 33 is set on the first foot-driven lever 31, and first back-moving spring 33 is used for Apply pretightning force to the first foot-driven lever 31.The practicability and reliability that can be improved footrest component are set in this way.

Further, it is provided with convex block 21 on the surface of draw bar 20, when draw bar 20 is located at reception position, convex block 21 Lower surface abutted against with the first block 32, operation the first foot-driven lever 31 rotation, the first block 32 can be made to lift convex block 21 directly It is separated to the gravity lower protruding block 21 in draw bar 20 with 32 phase of the first block.I.e. in the present embodiment, in the first block 32 During convex block 21 is lifted, due to the gravity of draw bar 20 itself, it is increasingly towards and leads as draw bar 20 rises Draw direction offset, until the convex block 21 and the first block 32 on draw bar 20 are detached from rear haulage bar 20 and just stop rising.

As shown in figure 3, being provided with to improve stability of the draw bar 20 in reception position in the end of draw bar 20 Limit plate 22.The limiting slot matched with limit plate 22 is provided on bottom plate 11, when convex block 21 is separated with 32 phase of the first block, Limit plate 22 is exited from limiting slot so that draw bar 20 turns to distracted position.In order to facilitate draw bar 20 and other component phase Connection, can be provided with lantern ring 23 in the second end of draw bar 20.

Further, as shown in Figure 4 and Figure 5, traction mechanism further includes locking assembly.Locking assembly includes the second mounting rack 40, pin 50 and locking part 60 are put.Second mounting rack 40 is connected with the second installation foundation.Pin 50 is put rotationally to install with second Frame 40 is connected.Locking part 60 is connected with the second mounting rack 40, locking part 60 with pendulum pin 50 be disposed adjacently, locking part 60 with Pendulum pin 50 matches so that putting pin 50 has the lock position of the second end locking of draw bar 20, and operation locking part 60 can Make to put the unlocked position that pin 50 unlocks the second end of draw bar 20.Using the traction mechanism of the structure, so that being drawn realizing It bends over to carry out operation without operating personnel during the unlock of bar 20 and locking, improves people's safety of operating personnel, mention The high usage experience of user.It is highly reliable using structure operation simplicity.

Specifically, the second mounting rack 40 includes third side plate 41, the 4th side plate 42 and the 5th side plate 43.4th side plate 42 with Third side plate 41 is oppositely disposed, and pendulum pin 50 is rotatablely arranged between third side plate 41 and the 4th side plate 42.5th side plate 43 first end is connected with third side plate 41 and the 4th side plate 42 respectively, the 5th side plate 43 of part and third side plate 41 and the There is the setting of distance ground, to form the accommodation space for accommodating the second end of draw bar 20 between the lower edge of four side plates 42.

Wherein, the bottom of the 5th side plate 43 offers limit hole 431, when pendulum pin 50 is located at lock position, the pendulum of part Pin 50 is located in limit hole 431.Setting can be by the locking securely of draw bar 20 in this way.

Locking part 60 includes the second foot-driven lever 61 and the second block 62.Second foot-driven lever 61 is rotatably penetrated and arranged in third side On plate 41 and the 4th side plate 42, the second foot-driven lever 61 is located at the inside of pendulum pin 50.Second block 62 is connected with the second foot-driven lever 61 It connects, the second foot-driven lever 61 of operation can make the second block 62 that there is backstop pendulum pin 50 to continue the lock position inwardly rotated, alternatively, behaviour Making the second foot-driven lever 61 can make the second block 62 let pass with that will put pin 50 so that pendulum pin 50 can continue the unlocked position swung.

Further, the second block 62 is disposed adjacently with pendulum pin 50, and the second end of draw bar 20 is provided with lantern ring 23, when It is deflected with movable pendulum pin 50 until putting one end of pin 50 when the second end of draw bar 20 is inserted into the second mounting rack 40 along first direction In lantern ring 23, the second block 62 is as the yaw rotation of pendulum pin 50 is to lock position.Locking part 60 further includes the second reset Spring 63.Second back-moving spring 63 is connected with the second foot-driven lever 61, and second back-moving spring 63 is for making 62 direction of the second block The outside for putting pin 50 applies pretightning force.

In order to further limit pendulum pin 50, offer in the end of the second block 62 for accommodating pendulum pin 50 Groove 621.When pendulum pin 50 is located at lock position, pendulum pin 50 is located in groove 621, and puts the axis of pin 50 at this time along vertical Direction setting.

Traction mechanism in above-described embodiment can be also used for haulage equipment technical field, i.e., according to the present utility model another On the one hand, a kind of handling device, including traction mechanism are provided, traction mechanism is the traction mechanism in above-described embodiment, is carried Device includes multiple barrows 70, and the first installation foundation includes one frame structure in two neighboring barrow 70, and second Installation foundation includes the frame structure of another barrow 70.

Specifically, which can be a kind of fixture vehicle, solves the forward and backward vehicle of fixture vehicle using the traction mechanism and connects It need to be bent over, manual problem of squatting down, connection procedure be automated, key operations are by having ridden by operator in termination process At not needing operator and directly contact.

Compared to original fixture vehicle traction mechanism, operating procedure is reduced when the forward and backward fixture vehicle of fixture vehicle draw bar connects, even Connect speed raising.The movements such as operator's movement range reduces, and reduction bends over, squats down.Operator's hand no longer with dragger The actuating mechanism of structure contacts, and reduces injured probability.

Connection, the disconnection movement of the hitch structure are complete with the draw bar of head band annular using having strong market potential for can swinging around axis At the position by limiting pendulum pin achievees the purpose that connection to be latched draw bar.Cancel the limitation of pendulum pin, unlock draw bar, It can then disconnect.When operation, it is only necessary to complete limitation/cancellation limitation movement by foot-operated movement, complete to be connected and disconnected from Process.

That draws bar packs up/release movement: in the state of not using, draw bar should have withdrawal energy since length is longer Power reduces occupied area, convenient to use in the venue, while draw bar release and the process withdrawn simplify as far as possible, in this regard, traction The tail portion of bar has carried out new design, has reserved position limiting structure, and reserved limiting slot on the pedestal of draw bar connection, so that When draw bar is in vertical direction, position limiting structure can be fallen into the limiting slot of pedestal, reach fixed traction bar on vertical direction Effect.

When discharging draw bar, being rotated by foot-driven lever connection block, block rotation drives draw bar to move upwards, thus So that the position limiting structure of draw bar is detached from limiting slot, be then towed bar self gravity, draw bar falls around axis automatically, draws simultaneously The position limiting structure of bar tail portion plays a role again, contacts with the limited block of attachment base, ensure that the horizontality of draw bar.

Put locking/unlocking motion of pin: in terms of pendulum sells locking, lead is usually horizontal direction, locks draw bar Structure be typically designed to the bolt of vertical direction, the bolt of vertical direction can with the draw bar of operative constraint horizontal direction, and It can guarantee that draw bar can be in the case where restrained, rotation, makes fixture vehicle have steering capability in horizontal direction.Draw bar Based on this principle, new design has been carried out, by the bolt of vertical direction vertical motion, has been changed to the pendulum pin swung around axis, has been sold in pendulum It when falling into draw bar iron hoop, then is latched with block, swings pendulum pin no longer, to achieve the purpose that locking, in the shape of locking It is still with the draw bar in the pin bound level direction of vertical direction when state.The block of pendulum pin connects foot-driven lever, can be by operator It is directly trampled with foot and achievees the purpose that locking and unlocking, foot-driven lever installs spring structure additional, after guaranteeing the foot-operated unlocking of operator, block It automatically resets to blocking.

The structure that latches automatically when draw bar and pendulum pin connection: when fixture vehicle prepares to connect, the draw bar of front truck is horizontal It puts down, is remained about point-blank with rear car, allow a certain range of error.Pendulum pin is in wait state in unidirectional Blocking, pendulum pin top are limited by block, are only capable of inwardly swinging, can not swing out, control fixture vehicle and draw bar Close to the rear portion hitch structure of front truck, pendulum pin is inwardly opened with the iron hoop structure on draw bar, continues to control fixture vehicle and traction Forward, until pendulum pin is fallen from the iron hoop center of draw bar, at this point, connecting moves is completed, pendulum pin is in iron hoop and is kept off for bar The locking of block, iron hoop can not be deviate from backward, since iron hoop central diameter is larger, can not also touch pendulum pin again forward, can not also deviate from, To reach connection purpose.

When disconnecting, block can be connected by operator is foot-operated according in locking/unlocking structure narration of above-mentioned pendulum pin Foot-driven lever, so that pendulum pin is detached from the limitation of block, at this point, pendulum pin is in two-way swingable state, the iron hoop of draw bar removed The range for putting pin, can be disconnected.The block of pin is put by the effect of spring, automatically reset the state to connection, draw bar It can pack up at this time.

Traction mechanism bears fixture vehicle and advances, turning, slows down as the important composition structure during fixture vehicle transition The transmitting in the direction of power and power in the process should have higher intensity first, can bear to generate in fixture vehicle motion process Impact force and drawing force, and guarantee to use for a long time, structure does not generate deformation.Due to that can not hold at traditional structure draw bar docking By biggish impact force and drawing force, easily generation deformation is not available so as to cause traction mechanism.For such situation, lead Draw bar to reinforce the intensity of draw bar, draw bar forced contact point, using diameter of section 20mm, central diameter is 140mm's Iron hoop, and with the pin of 25mm for being latched.When the iron hoop of biggish central diameter can guarantee fixture vehicle connection, the pin of locking is fallen into Probability in iron hoop.

Than that described above, it is also necessary to which explanation is " one embodiment " spoken of in the present specification, " another implementation Example ", " embodiment " etc. refer to that specific features, structure or the feature of embodiment description is combined to be included in the application summary Property description at least one embodiment in.It is not centainly to refer to the same reality that statement of the same race, which occur, in multiple places in the description Apply example.Furthermore, it is understood that is advocated is knot when describing a specific features, structure or feature in conjunction with any embodiment Other embodiments are closed to realize that this feature, structure or feature are also fallen in the scope of the utility model.

In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment Point, reference can be made to the related descriptions of other embodiments.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (14)

1. a kind of traction mechanism characterized by comprising

First mounting rack (10), first mounting rack (10) with the first installation foundation for being connected；

Draw bar (20), the first end of the draw bar (20) is rotationally connected with first mounting rack (10), described The second end of draw bar (20) and the second installation foundation are detachably connectable, and the draw bar (20) has towards first direction Distracted position when traction and reception position when with towards second direction, the first direction have with the second direction Angle；

Footrest component (30), the footrest component (30) be connected with first mounting rack (10) and with the draw bar (20) First end be disposed adjacently, when the draw bar (20) is located at the reception position, operating the footrest component (30) can The draw bar (20) is set to turn to the distracted position from the reception position.

2. traction mechanism according to claim 1, which is characterized in that first mounting rack (10) includes:

Bottom plate (11)；

First side plate (12), first side plate (12) are connected with the bottom plate (11)；

Second side plate (13), second side plate (13) are connected and opposite with first side plate (12) with the bottom plate (11) Ground setting, the first end of the draw bar (20) extend between first side plate (12) and second side plate (13) and with First side plate (12) and second side plate (13) are movably connected, the footrest component (30) and first side plate (12) it is connected with second side plate (13).

3. traction mechanism according to claim 2, which is characterized in that the footrest component (30) includes:

First foot-driven lever (31), first foot-driven lever (31) are rotatably penetrated and arranged in first side plate (12) and described second On side plate (13)；

First block (32), first block (32) are connected with first foot-driven lever (31) and are located at first side plate (12) between second side plate (13)；

First back-moving spring (33), the first back-moving spring (33) are set on first foot-driven lever (31), and described first Reset spring (33) is used to apply pretightning force to first foot-driven lever (31).

4. traction mechanism according to claim 3, which is characterized in that be provided with convex block on the surface of the draw bar (20) (21), when the draw bar (20) is located at the reception position, the lower surface of the convex block (21) and first block (32) it abuts against, operates the first foot-driven lever (31) rotation, first block (32) can be made to lift the convex block (21) Until the convex block (21) mutually separates with first block (32) under the gravity of the draw bar (20).

5. traction mechanism according to claim 4, which is characterized in that the end of the draw bar (20) is provided with limit plate (22), be provided with the limiting slot matched with the limit plate (22) on the bottom plate (11), when the convex block (21) with it is described When first block (32) mutually separates, the limit plate (22) is exited from the limiting slot so that the draw bar (20) turns to The distracted position.

6. traction mechanism according to any one of claim 1 to 5, which is characterized in that the second of the draw bar (20) End is provided with lantern ring (23).

7. traction mechanism according to claim 1, which is characterized in that the traction mechanism further includes locking assembly, described Locking assembly includes:

Second mounting rack (40), second mounting rack (40) are connected with second installation foundation；

Pendulum pin (50), the pendulum pin (50) are rotationally connected with second mounting rack (40)；

Locking part (60), the locking part (60) are connected with second mounting rack (40), the locking part (60) with it is described Pendulum pin (50) is disposed adjacently, and the locking part (60) is sold (50) with the pendulum and matched so that pendulum pin (50) has institute The lock position of the second end locking of draw bar (20) is stated, and the operation locking part (60) can make the pendulum pin (50) by institute State the unlocked position of the second end unlock of draw bar (20).

8. traction mechanism according to claim 7, which is characterized in that second mounting rack (40) includes:

Third side plate (41)；

4th side plate (42), the 4th side plate (42) are oppositely disposed with the third side plate (41), and the pendulum pin (50) can It is rotatably arranged between the third side plate (41) and the 4th side plate (42)；

5th side plate (43), the first end of the 5th side plate (43) respectively with the third side plate (41) and the 4th side plate (42) it is connected, the 5th side plate (43) of part and the lower edge of the third side plate (41) and the 4th side plate (42) Between have distance ground setting, to form the accommodation space for accommodating the second end of the draw bar (20).

9. traction mechanism according to claim 8, which is characterized in that the bottom of the 5th side plate (43) offers limit Hole (431), when pendulum pin (50) is located at the lock position, the pendulum pin (50) of part is located at the limit hole (431) in.

10. traction mechanism according to claim 8, which is characterized in that the locking part (60) includes:

Second foot-driven lever (61), second foot-driven lever (61) are rotatably penetrated and arranged in the third side plate (41) and the described 4th On side plate (42), second foot-driven lever (61) is located at the inside of the pendulum pin (50)；

Second block (62), second block (62) are connected with second foot-driven lever (61), and it is foot-operated to operate described second Bar (61) can make second block (62) that there is pendulum pin (50) described in backstop to continue the lock position inwardly rotated, or Person, operating second foot-driven lever (61) can be such that second block (62) has pendulum pin (50) clearance so that the pendulum Pin (50) can continue the unlocked position swung.

11. traction mechanism according to claim 10, which is characterized in that second block (62) and pendulum pin (50) It is disposed adjacently, the second end of the draw bar (20) is provided with lantern ring (23), when the second end of the draw bar (20) is along institute State first direction be inserted into second mounting rack (40) it is interior when drive pendulum pin (50) deflection until the pendulum pin (50) one End is located in the lantern ring (23), and second block (62) is with the yaw rotation for putting pin (50) to the locking position It sets.

12. traction mechanism according to claim 10, which is characterized in that the locking part (60) further include:

Second back-moving spring (63), the second back-moving spring (63) are connected with second foot-driven lever (61), and described second Reset spring (63) is used to that second block (62) to be made to apply pretightning force towards the outside of the pendulum pin (50).

13. traction mechanism according to claim 10, which is characterized in that the end of second block (62) opens up useful In the groove (621) for accommodating the pendulum pin (50).

14. a kind of handling device, which is characterized in that including traction mechanism, the traction mechanism is any in claim 1 to 13 Traction mechanism described in, the handling device includes multiple barrows, and first installation foundation includes two neighboring described One frame structure in barrow, second installation foundation include the frame structure of another barrow.