CN207243311U - Supporting leg connection structure and wheeled crane - Google Patents
Supporting leg connection structure and wheeled crane Download PDFInfo
- Publication number
- CN207243311U CN207243311U CN201721164667.0U CN201721164667U CN207243311U CN 207243311 U CN207243311 U CN 207243311U CN 201721164667 U CN201721164667 U CN 201721164667U CN 207243311 U CN207243311 U CN 207243311U
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- axis pin
- supporting leg
- cylinder
- connection structure
- connector sleeve
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Abstract
It the utility model is related to a kind of supporting leg connection structure and wheeled crane, wherein, supporting leg connection structure, it includes axis pin, connector sleeve and latch cylinder, the connector sleeve is arranged on the end of the axis pin, the end of the cylinder rod of the latch cylinder wears and is limited in the connector sleeve, and the latch cylinder can drive the axis pin to act, to realize the connection of supporting leg and vehicle frame and dismounting.Axis pin in the utility model is connected with latch cylinder by connector sleeve, and the end of axis pin is without thread mill drilling, and therefore, the diameter of axis pin can reduce, and the weight of axis pin and latch cylinder mitigates accordingly, and assembling is light.
Description
Technical field
It the utility model is related to engineering machinery field, more particularly to a kind of supporting leg connection structure and wheeled crane.
Background technology
Wheeled crane is using tire device, can be moved under band load or no-load condition along trackless road surface, by dead weight
Keep stable crane.Vehicle frame is the major bearing structures and walking matrix of crane descending, to place and support connection
Each parts of crane, and bear from the inside and outside various load of car.Meanwhile in order to increase Wheel Crane's Weight Lifting Operation
When elevating capacity and job stability, it is necessary to support leg mechanism is set.Support leg mechanism requires firm reliable, flexible convenient, driving
When withdraw or dismantle, when work overhanging support ground, whole crane is erected.
As shown in Figure 1, the wheeled crane chassis structure of existing oscillating support leg form generally comprises articulated frame 1 ', pendulum
Dynamic supporting leg 2 ', movable supporting legs 3 ' and oscillating oil cylinder 4 ' etc., four oscillating support legs 2 ' are hinged by axis pin 5 ' and vehicle frame 1 '.
As shown in Fig. 2, oscillating support leg respectively has an axis pin 5 ' at hinge above and below 2 ', axis pin 5 ' and car at upper and lower hinge
Frame 1 ' is fitted close, and axis pin 5 ', which by plugging pin oil cylinder 6 ' provides power, to be realized and be hinged with vehicle frame 1 ', makes oscillating support leg 2 ' can be with
Relative frame 1 ' is swung under the auxiliary of oscillating oil cylinder 4 '.
There are problems with for the type of attachment of above-mentioned oscillating support leg：
Axis pin 5 ' at upper and lower hinge is with vehicle frame 1 ' to be fitted close, and in hoisting operation, vehicle frame 1 ' passes through pivoting support
The load born is passed into four oscillating support legs 2 ' by axis pin 5 ', the axis pin 5 ' at upper and lower hinge bears supporting leg biography
The shearing force passed, the upper arc surface of axis pin 5 ' bear extruding force, cause arc surface not play one's part to the full, connecting bracket exists
Bear easily to deform in the state of big load for a long time.In vehicle running state, after oscillating support leg 2 ' is withdrawn, upper and lower axis pin 5 '
It is connected with vehicle frame 1 ', ensures that oscillating support leg 2 ' is not fallen out, the axis pin 5 ' at upper and lower hinge bears the shearing that supporting leg dead weight produces
Power.
As shown in Fig. 3 (a), Fig. 3 (b), the end face of axis pin 5 ' is equipped with axis pin ball-and-socket 51 ', plugging pin oil cylinder 6 ' include cylinder rod and
Arranged on the bulb 61 ' of cylinder rod, pressing plate 7 ' is split structure, including two pressing plate splits, is each provided with two pressing plate splits
Semicircle orifice 71 ', after two pressing plate split synthesis, two semicircle orifices 71 ' form through hole, and the diameter of through hole is more than the diameter of cylinder rod,
Less than the diameter of bulb 61 '.The through hole that two pressing plate splits are synthetically formed clamps cylinder rod, and by bolt 8 ' that pressing plate 7 ' is fixed
Corresponding in axis pin 5 ', bulb 61 ' is limited in axis pin ball-and-socket 51 ', and bulb 61 ' is engaged with axis pin ball-and-socket 51 ', so that
Plugging pin oil cylinder 6 ' is set to be directly connected to axis pin 5 ', when expanding-contracting action of plugging pin oil cylinder 6 ' can drive axis pin 5 ' to move up and down.
The connection mode of above-mentioned axis pin 5 ' and plugging pin oil cylinder 6 ' requires axis pin 5 ' to be equipped with the assembling use of pressing plate 7 ' in end face
Threaded hole, while require endface to have axis pin ball-and-socket 51 ', therefore, axis pin 5 ' needs to set larger diameter, in turn results in pin
The heavier-weight of axis 5 ', dismounting need larger space, and time-consuming and laborious.
The explanation of technical terms that the utility model is related to is as follows：
Movable supporting legs：Shaped by plate welding, can back and forth stretch relative to oscillating support leg, be used to support the box of crane
Structure.
Oscillating support leg：Shaped by plate welding, can be around the box that hinge freely swings for connecting movable supporting legs and vehicle frame
Structure.
Plugging pin oil cylinder：For connecting axis pin, drive axis pin to plug by stretching, realize the connection of oscillating support leg and vehicle frame
Dismounting.
Oscillating oil cylinder：For connecting the hydraulic cylinder of oscillating support leg and vehicle frame, the pendulum of oscillating support leg is realized by stretching
Go out and withdraw.
Utility model content
The purpose of this utility model is to propose a kind of supporting leg connection structure and wheeled crane, wherein, supporting leg connection structure
Assembling it is light.
To achieve the above object, the utility model provides a kind of supporting leg connection structure, it includes axis pin, connector sleeve and inserts
Cylinder is sold, the connector sleeve is arranged on the end of the axis pin, and the end of the cylinder rod of the latch cylinder wears and is limited in the connection
In set, the latch cylinder can drive the axis pin to act, to realize the connection of supporting leg and vehicle frame and dismounting.
It is clearance fit between the cylinder rod of connector sleeve and the latch cylinder preferably or in alternative embodiment one.
One preferably or in alternative embodiment, the axis pin is threadedly coupled with the connector sleeve.
One preferably or in alternative embodiment, the end of the cylinder rod of the latch cylinder is equipped with bulb, and the connector sleeve is equipped with
Allow the cylinder rod to pass through and limit the through hole that the bulb passes through.
One preferably or in alternative embodiment, the through hole is circumferentially with and the matched ball-and-socket of the sphere of the bulb
Face.
One preferably or in alternative embodiment, the end that the axis pin is arranged in the connector sleeve is equipped with and the bulb phase
The ball-and-socket of cooperation.
One preferably or in alternative embodiment, the vehicle frame is equipped with the bar hole for allowing the axis pin to pass through.
One preferably or in alternative embodiment, the axis pin is in the state of the bar hole is penetrated, the axis pin and institute
Bar hole is stated close to one end of the supporting leg to be fitted close, the axis pin is with the one end of the bar hole away from the supporting leg
Clearance fit.
One preferably or in alternative embodiment, the latch cylinder is arranged on the supporting leg.
To achieve the above object, the utility model additionally provides a kind of wheeled crane, it includes any of the above-described embodiment
In supporting leg connection structure.
Based on above-mentioned technical proposal, the utility model at least has the advantages that：
Axis pin in the utility model is connected with latch cylinder by connector sleeve, axis pin can stretch with the cylinder rod of latch cylinder and
Mobile, the cylinder rod of latch cylinder is stretched out, and axis pin can be driven to realize slotting action, supporting leg is connected with vehicle frame, the cylinder rod of latch cylinder
Retract, axis pin can be driven to realize the action pulled out, supporting leg and vehicle frame are released and connected.The end of the axis pin of the utility model need not
Thread mill drilling, therefore, the diameter of axis pin can reduce, and the weight of axis pin mitigates accordingly, and assembling is light.
Brief description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms the part of the application,
The schematic description and description of the utility model is used to explain the utility model, does not form to the improper of the utility model
Limit.In the accompanying drawings：
Fig. 1 is the attachment structure schematic diagram of existing vehicle frame, oscillating support leg and movable supporting legs；
Fig. 2 is the attachment structure schematic diagram of existing oscillating support leg and vehicle frame；
Fig. 3 (a) is the schematic diagram after existing plugging pin oil cylinder is connected with axis pin；
Fig. 3 (b) is the decomposition diagram that existing plugging pin oil cylinder is connected with axis pin；
Fig. 4 (a) is force analysis schematic diagram of the supporting leg connection structure provided by the utility model in hoisting operation；
Fig. 4 (b) is the local overlooking schematic diagram of Fig. 4 (a)；
Fig. 5 (a) is the force analysis schematic diagram of supporting leg connection structure provided by the utility model in motion；
Fig. 5 (b) is the local overlooking schematic diagram of Fig. 5 (a)；
Fig. 6 is the connection diagram of latch cylinder provided by the utility model and axis pin；
Fig. 7 is the schematic cross-sectional view that latch cylinder provided by the utility model is connected with axis pin；
Fig. 8 is the partial schematic sectional view of supporting leg connection structure provided by the utility model.
Attached figure label：
1 '-vehicle frame；2 '-oscillating support leg；3 '-movable supporting legs；4 '-oscillating oil cylinder；5 '-axis pin；51 '-axis pin ball-and-socket；6’-
Plugging pin oil cylinder；61 '-bulb；7 '-pressing plate；71 '-semicircle orifice；8 '-bolt；
1- axis pins；2- connector sleeves；3- latch cylinders；31- cylinder barrels；32- cylinder rods；33- bulbs；4- supporting legs；5- vehicle frames；51- bars
Shape hole.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, the technical solution in embodiment is carried out clear, complete
Ground describes.Obviously, described embodiment is only the part of the embodiment of the utility model, instead of all the embodiments.
Embodiment based on the utility model, the institute that those of ordinary skill in the art are obtained without creative efforts
There is other embodiment, shall fall within the protection scope of the present invention.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on attached drawing institutes
The orientation or position relationship shown, is for only for ease of description the utility model and simplifies description, rather than indicates or imply and is signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
The limitation of novel protected scope.
As shown in Fig. 4 (a), Fig. 4 (b), Fig. 5 (a), Fig. 5 (b), for showing for supporting leg connection structure provided by the utility model
Meaning property embodiment, in the illustrative examples, supporting leg connection structure includes axis pin 1, connector sleeve 2, latch cylinder 3, supporting leg 4 and car
Frame 5.
As shown in Fig. 6, Fig. 7, Fig. 8, connector sleeve 2 is arranged on the end of axis pin 1, and latch cylinder 3 includes cylinder barrel 31 and cylinder rod 32, cylinder
The end of bar 32 wears and is limited in connector sleeve 2, latch cylinder 3 can driving bearing pin 1 act, to realize supporting leg 4 and vehicle frame 5
Connection and dismounting.
Above-mentioned axis pin 1 is connected with latch cylinder 3 by connector sleeve 2, and axis pin 1 can stretch and move with the cylinder rod 32 of latch cylinder 3
Dynamic, the cylinder rod 32 of latch cylinder 3 is stretched out, and axis pin 1 can be driven to realize slotting action, supporting leg 4 is connected with vehicle frame 5, latch cylinder 3
Cylinder rod 32 is retracted, and axis pin 1 can be driven to realize the action pulled out, supporting leg 4 is released with vehicle frame 5 and is connected.
In above-described embodiment, axis pin 1 is connected with latch cylinder 3 by connector sleeve 2, relative to the prior art, the utility model
Axis pin 1 end without thread mill drilling, therefore, the diameter of axis pin 1 can reduce, and the weight of axis pin 1 mitigates accordingly, dress
With light.
In supporting leg connection structure provided by the utility model, between being between the cylinder rod 32 of connector sleeve 2 and latch cylinder 3
Gap coordinates, as shown in figure 8, when axis pin 1 bears the shearing force of the application of vehicle frame 5, since connector sleeve 2 and cylinder rod 32 are matched somebody with somebody for gap
Close, axis pin 1 can relatively rotate with latch cylinder 3, therefore, it is possible to avoid latch cylinder 3 from bearing the shearing force of the transmission of axis pin 1, together
When, the weight saving of axis pin 1 is, it is necessary to which the power that latch cylinder 3 provides reduces, and the size of latch cylinder 3 can reduce, and weight can subtract
Gently, the lightweight of supporting leg connection structure is realized.
It can use and be threadedly coupled in above-described embodiment, between axis pin 1 and connector sleeve 2.The end of axis pin 1 can be equipped with outer
Screw thread, corresponding, connector sleeve 2 can be equipped with internal thread, and the end insertion connector sleeve 2 of axis pin 1 is interior and passes through screw thread and connector sleeve 2
Connection, it is convenient and fast connection.
In supporting leg connection structure provided by the utility model, the end of the cylinder rod 32 of latch cylinder 3 can be equipped with bulb 33,
Connector sleeve 2, which can be equipped with, allows cylinder rod 32 to pass through and limit the through hole that bulb 33 passes through.The aperture of through hole is more than the straight of cylinder rod 32
Footpath is less than the diameter of bulb 33.
One preferably or in alternative embodiment, the circumferential direction of through hole can be equipped with the matched ball-and-socket of sphere with bulb 33
Face.Through hole is seam allowance, and the internal diameter of through hole is less than the diameter of bulb 33, slightly larger than the diameter of cylinder rod 32, can prevent connector sleeve 2 with
Cylinder rod 32 departs from, while micro relative rotation and movement can occur with cylinder rod 32.
Further, the end that axis pin 1 is arranged in connector sleeve 2 can be equipped with and 33 matched ball-and-socket of bulb.Latch cylinder 3
The bulb 33 at 32 end of cylinder rod is contacted with the ball-and-socket of 1 end of axis pin.
By the description of above-described embodiment, latch cylinder 3 is connected by connector sleeve 2 with axis pin 1,1 outer surface of axis pin processing one
Section external screw thread, be connected with the internal thread of connector sleeve 2, make axis pin 1 can be flexible with latch cylinder 3 and move up and down, due to connector sleeve 2 and
It is clearance fit between cylinder rod 32, and the ball-and-socket of 1 end set of axis pin and the bulb 33 at 3 cylinder rod of latch cylinder, 32 end are engaged,
Axis pin 1 can relatively rotate with latch cylinder 3, and therefore, axis pin 1 is fastened with latch cylinder 3 using above-mentioned flexural pivot and thread fitting, energy
Enough avoid latch cylinder 3 from bearing shearing force, 3 size of latch cylinder can be reduced, realize that lightweight, assembling are light.
On the basis of above-mentioned each embodiment, vehicle frame 5 can be equipped with the bar hole 51 for allowing axis pin 1 to pass through.Bar hole
51 width is identical with the diameter of axis pin 1, and the length of bar hole 51 is more than the diameter of axis pin 1.
One preferably or in alternative embodiment, vehicle frame 5 can be equipped with connecting bracket, and bar hole 51 can be arranged on connection branch
Frame.
As shown in Fig. 4 (b), Fig. 5 (b), Fig. 8, in the state of bar hole 51 is penetrated, axis pin 1 leans on axis pin 1 with bar hole 51
One end of nearly supporting leg 4 can limit supporting leg 4 and sink to be fitted close；Between the one end of axis pin 1 and bar hole 51 away from supporting leg 4 is
Gap coordinate, can to avoid in hoisting operation axis pin 1 bear shearing force.
As shown in Fig. 4 (a), Fig. 4 (b), in crane job, supporting leg 4 is subject to power straight up, support zone deformation
Shown in such as Fig. 4 (a) of direction straight up, axis pin 1 with leg structure to the right i.e. to the Direction distortion away from supporting leg 4 close to vehicle frame 5,
Since vehicle frame 5 and axis pin 1 close to one end of vehicle frame 5 be clearance fit away from supporting leg 4,1 deformation direction of axis pin freedom, therefore not
It can bear shearing force.
As shown in Fig. 5 (a), Fig. 5 (b), supporting leg 4 is by effect of weight, and deformation direction is such as in crane band supporting leg 4 when driving
Shown in Fig. 5 (a) straight down, axis pin 1 is close to Direction distortion of the supporting leg 4 away from vehicle frame 5, due to vehicle frame to the left with leg structure
5 with axis pin 1 close to supporting leg 4 away from 5 end of vehicle frame for be fitted close, 1 deformation direction of axis pin is constrained, therefore, bear supporting leg 4 from
Shearing force caused by weight, but the shearing force is much smaller than the shearing force that hoisting operation state can produce in prior art, therefore,
Relatively current 1 diameter of axis pin of 1 diameter of axis pin in the utility model can greatly reduce.
In above-described embodiment, vehicle frame 5 and axis pin 1 are arranged to clearance fit, the stress side preset clearance of hoisting operation, OK
The stress side for sailing state is in close contact, and can be ensured that axis pin 1 only bears the shearing force of the dead weight generation of supporting leg 4 in transport condition, be kept away
Exempt from the stress in crane job of axis pin 1.
One preferably or in alternative embodiment, latch cylinder 3 is arranged on supporting leg 4.Supporting leg 4 is hinged by axis pin 1 and vehicle frame 5.
The utility model additionally provides a kind of wheeled crane, it includes the supporting leg connection knot in any of the above-described embodiment
Structure.
By the description of above-mentioned each embodiment, supporting leg connection structure provided by the utility model and use can be derived
The wheeled crane of the supporting leg connection structure also at least has the following advantages：
1) axis pin 1 in the utility model is connected with latch cylinder 3 by connector sleeve 2, wherein, the external screw thread that axis pin 1 is set
Fastened with the internal thread that connector sleeve 2 is set, compact-sized, assembling is simply.
2) axis pin 1 in the utility model is engaged with latch cylinder 3 using flexural pivot, the bulb 33 of axis pin 1 and latch cylinder 3
It can relatively rotate, latch cylinder 3 can be avoided to bear the shearing force of the transmission of axis pin 1, reduce the size of latch cylinder 3, mitigate and insert
The weight of cylinder 3 is sold, realizes lightweight.
3) vehicle frame 5 in the utility model is provided with bar hole, axis pin 1 and 5 clearance fit of vehicle frame, when ensureing hoisting operation
The stress side of axis pin 1 is not contacted with vehicle frame 5, can make not stressing during 1 hoisting operation of axis pin, reduces the size of axis pin 1, mitigates pin
The weight of axis 1；Shearing force when avoiding the axis pin 1 from bearing lifting, only cuts what crane running state bore that the dead weight of supporting leg 4 produces
Shear force.
In the description of the utility model, it is to be understood that limited using the word such as " first ", " second ", " the 3rd "
Determine parts, it is only for easy to be distinguished to above-mentioned parts, such as there is no Stated otherwise, above-mentioned word is not special
Implication, therefore it is not intended that limitation to scope of protection of the utility model.
Finally it should be noted that:Above example is only illustrating the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Modify to specific embodiment of the present utility model or to some technical characteristics carry out equivalent substitution without departing from
The spirit of technical solutions of the utility model, it should all cover among the claimed technical solution scope of the utility model.
Claims (10)
- A kind of 1. supporting leg connection structure, it is characterised in that：Including axis pin (1), connector sleeve (2) and latch cylinder (3), the connector sleeve (2) end of the axis pin (1) is arranged on, the end of the cylinder rod (32) of the latch cylinder (3) wears and is limited in the connector sleeve (2) in, the latch cylinder (3) can drive the axis pin (1) to act, to realize the connection of supporting leg (4) and vehicle frame (5) and tear open Unload.
- 2. supporting leg connection structure as claimed in claim 1, it is characterised in that：The connector sleeve (2) and the cylinder rod of latch cylinder (3) (32) it is clearance fit between.
- 3. supporting leg connection structure as claimed in claim 1, it is characterised in that：The axis pin (1) and the connector sleeve (2) screw thread Connection.
- 4. supporting leg connection structure as claimed in claim 1, it is characterised in that：The end of the cylinder rod (32) of the latch cylinder (3) Equipped with bulb (33), the connector sleeve (2) be equipped with allow the cylinder rod (32) to pass through and limit the bulb (33) pass through it is logical Hole.
- 5. supporting leg connection structure as claimed in claim 4, it is characterised in that：The through hole is circumferentially with and the bulb (33) The matched ball-and-socket face of sphere.
- 6. supporting leg connection structure as claimed in claim 4, it is characterised in that：The axis pin (1) is arranged in the connector sleeve (2) End be equipped with and the bulb (33) matched ball-and-socket.
- 7. supporting leg connection structure as claimed in claim 1, it is characterised in that：The vehicle frame (5), which is equipped with, allows the axis pin (1) The bar hole (51) passed through.
- 8. supporting leg connection structure as claimed in claim 7, it is characterised in that：The axis pin (1) is penetrating the bar hole (51) in the state of, the axis pin (1) is tight fit close to one end of the supporting leg (4) with the bar hole (51), described Axis pin (1) is clearance fit with the one end of the bar hole (51) away from the supporting leg (4).
- 9. supporting leg connection structure as claimed in claim 1, it is characterised in that：The latch cylinder (3) is arranged on the supporting leg (4).
- A kind of 10. wheeled crane, it is characterised in that：Including such as claim 1~9 any one of them supporting leg connection structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164667.0U CN207243311U (en) | 2017-09-12 | 2017-09-12 | Supporting leg connection structure and wheeled crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721164667.0U CN207243311U (en) | 2017-09-12 | 2017-09-12 | Supporting leg connection structure and wheeled crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207243311U true CN207243311U (en) | 2018-04-17 |
Family
ID=61888033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721164667.0U Active CN207243311U (en) | 2017-09-12 | 2017-09-12 | Supporting leg connection structure and wheeled crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207243311U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502491A (en) * | 2018-12-30 | 2019-03-22 | 浙江三装备有限公司 | Just cocked support leg mechanism and crawler crane |
| CN110294426A (en) * | 2019-04-02 | 2019-10-01 | 三一汽车起重机械有限公司 | Plug connection structure, supporting leg and vehicle frame connection component and crane |
-
2017
- 2017-09-12 CN CN201721164667.0U patent/CN207243311U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109502491A (en) * | 2018-12-30 | 2019-03-22 | 浙江三装备有限公司 | Just cocked support leg mechanism and crawler crane |
| CN110294426A (en) * | 2019-04-02 | 2019-10-01 | 三一汽车起重机械有限公司 | Plug connection structure, supporting leg and vehicle frame connection component and crane |
| CN110294426B (en) * | 2019-04-02 | 2021-07-13 | 三一汽车起重机械有限公司 | Plug connection structure and crane |
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