CN105439013B - Leg adjusting device, telescopic leg and mobilecrane - Google Patents
Leg adjusting device, telescopic leg and mobilecrane Download PDFInfo
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- CN105439013B CN105439013B CN201510047548.6A CN201510047548A CN105439013B CN 105439013 B CN105439013 B CN 105439013B CN 201510047548 A CN201510047548 A CN 201510047548A CN 105439013 B CN105439013 B CN 105439013B
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- leg
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Abstract
The present invention relates to a kind of leg adjusting device, telescopic leg and mobilecrane, wherein, leg adjusting device includes：Hold-down support, nylon block, regulation stud and connecting bolt, hold-down support is provided with tapped through hole and is fixedly connected on fixed supporting leg lower shoe, regulation stud is arranged on hold-down support by tapped through hole, connecting bolt is threadedly coupled through regulation stud with nylon block, realizes that movable supporting legs bearing height is adjusted by rotating regulation stud.By with the connecting bolt through regulation stud be threadedly coupled the nylon block for setting by the leg adjusting device, nylon block is removably secured in regulation stud, after part is damaged, the part of damage need to only be changed, this substitute mode has been saved replacement cost and has changed convenient, with reliability higher.
Description
Technical field
The present invention relates to engineering machinery field, more particularly to a kind of leg adjusting device, telescopic leg and portable
Heavy-duty machine.
Background technology
Mobilecrane can be used for raising weight and with the equipment of voluntarily walking function as a kind of, in engineering machinery
It is widely used in field, wherein, mobilecrane leg portion is made up of fixed supporting leg and movable supporting legs, fixed branch
Leg is welded into one with vehicle frame, and movable supporting legs can back and forth stretch according to working condition in fixed supporting leg square chest.For the ease of activity
Supporting leg is assembled with fixed supporting leg, and fit-up gap must be left therebetween, therefore in movable supporting legs telescopic process, due to work
Dynamic supporting leg center of gravity is relatively fixed supporting leg movement, causes to be equipped with Vertical Cylinders side having certain angle of inclination, easily blocks
Stagnant, interference, makes motion not smooth, the drawback such as moment impact is big during folding and unfolding vertical leg.This is accomplished by a kind of adjusting means supporting leg
Between movement clearance reduce, it is ensured that movable supporting legs can stretch safe and reliable, freely.
Adjusting means on existing movable supporting legs is as shown in figure 1, movable supporting legs a1 is first loaded fixed supporting leg square chest a2 by it
In, then nylon column a3 is formed regulation stud component on regulation stud a4, then regulating bolt component is loaded and is fixed
In the two screwed hole a6 processed on the lower shoe a5 of supporting leg square chest a2, finally adjusting regulation stud a4 stretches movable supporting legs a1
Inclination angle after going out meets and requires, then by the locked regulation stud a4 of locking nut a7.
Due to being limited by vehicle layout and fixed supporting leg structure type, nylon column a3 and Vertical Cylinders fixing bolt a8
Preset clearance is limited, if welding deformation (such as square chest rhombus) occur in movable supporting legs a1, fixed supporting leg, the two easily produces fortune
Dynamic interference, is come off so as to cause adjusting means during telescopic outrigger to be squeezed, and the screwed hole a6 stripped threads of lower shoe a5 are caused when serious, is needed
Change the lower shoe a5 of fixed supporting leg.
Existing adjusting means in order to avoid during crane running nylon column a3 come off, typically by nylon column a3 with regulation
Stud a4 is made of one shaping or is installed by the way of interference fit, needs to change whole regulation after causing nylon column serious wear
Device, replacement cost is high and changes inconvenience.
The content of the invention
To overcome above technological deficiency, present invention solves the technical problem that a kind of leg adjusting device is to provide, the supporting leg
Adjusting means need to only change the part of damage in Renewal process, it is to avoid the mode that existing whole adjusting means is changed, and save
Replacement cost and change convenient, with reliability higher.
In order to solve the above technical problems, the invention provides a kind of leg adjusting device, the leg adjusting device includes：Gu
Determine bearing, nylon block, regulation stud and connecting bolt, hold-down support is provided with tapped through hole and is fixedly connected under fixed supporting leg
On base plate, regulation stud is arranged on hold-down support by tapped through hole, and connecting bolt passes through regulation stud and nylon block screw thread
Connection, realizes that movable supporting legs bearing height is adjusted by rotating regulation stud.
In the basic technical scheme, nylon block is threadedly coupled by with the connecting bolt through regulation stud, nylon
Block is removably secured in regulation stud, after nylon block is damaged, only need to change nylon block, when regulation stud is damaged
Afterwards, regulation stud also need to be only changed, this substitute mode has saved maintenance cost compared to existing whole substitute mode
And change convenient, the reliability of leg adjusting device can also be guaranteed.
Further, hold-down support is stepped with fixed supporting leg lower shoe junction.
In the improved technical scheme, hold-down support is stepped with fixed supporting leg lower shoe junction, increased
The connection contact area of hold-down support and fixed supporting leg, improves the reliability of hold-down support, and tapped through hole can be
Processed on the hold-down support of single-piece, simplify the processing technology of leg adjusting device.
Further, hold-down support is securely removably connected on fixed supporting leg lower shoe.
In the improved technical scheme, hold-down support is securely removably connected on fixed supporting leg lower shoe, when solid
After determining bearing damage, only hold-down support need to be changed, it is not necessary to related replacing fixed supporting leg lower shoe, saved replacement cost.
Further, leg adjusting device also include be arranged between connecting bolt and regulation stud for holding out against connection
The spring washer of bolt.
In the improved technical scheme, by setting spring washer between connecting bolt and regulation stud, spring washer can be pushed up
It is close to connecting bolt, it is to avoid connecting bolt relatively rotates with nylon block, improves the stable connection of connecting bolt and nylon block
Reliability.
Preferably, regulation stud outer surface is provided with the external screw thread coordinated with tapped through hole, regulation stud from top to bottom
The first shoulder hole, the second shoulder hole, the 3rd shoulder hole are provided with, the internal diameter of the second shoulder hole is respectively less than the first shoulder hole and the 3rd rank
The internal diameter in terraced hole, connecting bolt is threadedly coupled through the second shoulder hole with nylon block, and the first shoulder hole and the 3rd shoulder hole are distinguished
Bolt head with nylon block and connecting bolt is adapted to.
In the preferred technical scheme, regulation stud is connected by external screw thread and tapped through hole and is arranged on fixed branch
On seat, movable supporting legs bearing height is changed by rotating regulation stud.Shoulder hole structure, first are set inside regulation stud
The bolt head of shoulder hole and the 3rd shoulder hole respectively with nylon block and connecting bolt is adapted to, connecting bolt through the second shoulder hole with
Nylon block is threadedly coupled, and not only increases the contact connection area of nylon block and connecting bolt with regulation stud, improves connection
Reliability, also optimizes regulation stud structure, has saved manufacturing cost.
Preferably, nylon block includes the cylindrical portion coordinated with the first shoulder hole and the square for supporting movable supporting legs
Portion, is provided with the blind screw hole coordinated with connecting bolt in cylindrical portion, square portion turns with fixed supporting leg box-shaped into limitation nylon block
Dynamic structure.
In the preferred technical scheme, the cylindrical portion of nylon block is stably sleeved in the first shoulder hole, connecting bolt
It is threadedly coupled with blind screw hole through the second shoulder hole, nylon block is firmly secured in regulation stud.Square portion and fixation
The side plane contact of outrigger box, nylon block rotates when preventing telescopic movable supporting leg, improves contact stabilization.
Further, cylindrical portion and square portion are in eccentric structure.
In the improved technical scheme, the area in the square portion of the nylon block of eccentric structure increases, and it is propped up with activity
The contact area of leg increases, and extends the service life of nylon block, improves the stability of strutting system of nylon block.
Preferably, regulation stud bottom is provided with the keyway for rotating regulation stud.
In the preferred technical scheme, keyway is set in regulation stud bottom, is easy to rotate regulation spiral shell by keyway
Post is changing the bearing height of movable supporting legs.
Preferably, the 3rd shoulder hole is hex hole.
In the preferred technical scheme, the 3rd shoulder hole is processed into hex hole, is easy to turn by hex hole
Regulation stud is moved to change the bearing height of movable supporting legs.
Present invention also offers a kind of telescopic leg, the telescopic leg has above-mentioned leg adjusting device.
In the basic technical scheme, the telescopic leg with above-mentioned leg adjusting device correspondingly has above-mentioned
Beneficial technique effect.
The present invention has further related to a kind of mobilecrane, and the mobilecrane has above-mentioned telescopic
Supporting leg.
In the basic technical scheme, the mobilecrane with above-mentioned telescopic leg correspondingly also has upper
State beneficial technique effect.
Thus, based on above-mentioned technical proposal, the invention provides a kind of leg adjusting device, the leg adjusting device will set
The nylon block put is threadedly coupled by with the connecting bolt through regulation stud, and nylon block is removably secured installed in regulation spiral shell
On post, after part is damaged, the part of damage need to be only changed, this substitute mode has saved replacement cost and replacing side
Just, with reliability higher, the telescopic leg and mobilecrane that the present invention is provided correspondingly also have above-mentioned beneficial
Technique effect.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is only used for the explanation present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of existing leg adjusting device；
Fig. 2 is the structural representation of leg adjusting device embodiment of the present invention；
Fig. 3 is the structural representation of hold-down support embodiment in leg adjusting device of the present invention；
Fig. 4 is the dimensional structure diagram of regulation stud in leg adjusting device of the present invention；
Fig. 5 is the positive structure diagram of regulation stud in leg adjusting device of the present invention；
Fig. 6 is the schematic cross-section at A-A positions in Fig. 5；
Fig. 7 is the dimensional structure diagram of nylon block in leg adjusting device of the present invention；
Fig. 8 is the positive structure diagram of nylon block in leg adjusting device of the present invention；
Fig. 9 is the schematic cross-section at B-B positions in Fig. 8.
Specific embodiment
Below by drawings and Examples, technical scheme is described in further detail.
Specific embodiment of the invention is for the ease of to design of the invention, the technical problem for being solved, composition skill
The technical characteristic of art scheme and the technique effect for bringing have further description.It should be noted that for these embodiment party
The explanation of formula does not constitute limitation of the invention.Additionally, the technology being related in the implementation method of present invention described below is special
Can be just mutually combined as long as levying and do not constitute each other conflict.
Because existing leg adjusting device needs to change whole adjusting means after component wear is serious, replacement cost it is high and
Change inconvenience, the present invention devises a kind of leg adjusting device, the leg adjusting device by the nylon block of setting by with pass through
The connecting bolt threaded connection of regulation stud, nylon block is removably secured in regulation stud, when part is damaged
Afterwards, the part of damage need to be only changed, this substitute mode has been saved replacement cost and changed convenient, with reliability higher.
Fig. 2 is the structural representation of leg adjusting device embodiment of the present invention, and leg adjusting device includes：Hold-down support 1,
Nylon block 3, regulation stud 4, connecting bolt 5 and the locking nut 7 for locking regulation stud 4, hold-down support 1 are provided with screw thread
Through hole 2 and it is fixedly connected on fixed supporting leg lower shoe 8, regulation stud 4 is arranged on hold-down support 1 by tapped through hole 2, even
Connecting bolt 5 is threadedly coupled through regulation stud 4 with nylon block 3, by rotating regulation stud 4 to realize movable supporting legs bearing height
Regulation.
In the schematical embodiment, hold-down support 1 is the carrier of leg adjusting device, and regulation stud 4 is led to screw thread
The threaded connection of hole 2 is arranged on hold-down support 1, and connecting bolt 5 is threadedly coupled through regulation stud 4 with nylon block 3, nylon block 3
It is removably secured in regulation stud 4, when nylon block 3 during support after being damaged, only need to changes nylon block 3
；After regulation stud 4 is damaged such as stripped thread, regulation stud 4 also need to be only changed, compared to existing whole replacing
Mode, the substitute mode has been saved maintenance cost and has changed convenient, and the reliability of leg adjusting device can also be protected
Card.Further, as shown in Fig. 2 leg adjusting device is also preferably included is arranged between connecting bolt 5 and regulation stud 4
Spring washer 6 for holding out against connecting bolt 5, spring washer 6 can hold out against connecting bolt 5, it is to avoid connecting bolt 5 is with nylon block 3 in support
During relatively rotate, improve the stable connection reliability of connecting bolt 5 and nylon block 3.
Fig. 3 is the structural representation of hold-down support embodiment in leg adjusting device of the present invention, and hold-down support 1 is added by steel plate
Work is molded, and the tapped through hole 2, ladder and groove of fine thread can be first processed on hold-down support 1, is then propped up with fixation again
Leg lower shoe 8 is fixedly connected, and is so avoided that and processes tapped through hole in fixed supporting leg component, simplifies leg adjusting device
Processing technology.The width size of hold-down support 1 is determined according to the diameter of Vertical Cylinders, to ensure that movable supporting legs are smoothly stretched
Contracting.Hold-down support 1 is stepped with the junction of fixed supporting leg lower shoe 8, and stairstepping causes that hold-down support 1 is gone to the bottom with fixed supporting leg
The bottom surface of plate 8 and side connect, and hold-down support 1 is also connected with the side plate of fixed supporting leg case and contacts, and increases connection contact area,
Improve the reliability of hold-down support 1.Hold-down support 1 can be fixed on fixed supporting leg lower shoe 8 by way of welding
On, it is also possible to preferably removably it is fixedly connected on fixed supporting leg lower shoe 8, when hold-down support 1 is sent out during support
After raw stripped thread etc. is damaged, only hold-down support 1 need to be changed, it is not necessary to related replacing fixed supporting leg lower shoe 8, saved and be replaced with
This.
In a preferred illustrative examples, as shown in Fig. 4~Fig. 6, the outer surface of regulation stud 4 is provided with logical with screw thread
The external screw thread 41 that hole 2 coordinates, regulation stud 4 is connected with tapped through hole 2 by external screw thread 41 and is arranged on hold-down support 1,
Change the bearing height of movable supporting legs by rotating regulation stud 4.The first shoulder hole from top to bottom is provided with regulation stud 4
42nd, the second shoulder hole 43, the 3rd shoulder hole 44, the internal diameter of the second shoulder hole 43 are respectively less than the first shoulder hole 42 and the 3rd shoulder hole
44 internal diameter, connecting bolt 5 is threadedly coupled through the second shoulder hole 43 with nylon block 3, the first shoulder hole 42 and the 3rd shoulder hole
44 bolt head respectively with nylon block 3 and connecting bolt 5 is adapted to, by setting shoulder hole structure inside regulation stud, not only
Nylon block 3 and connecting bolt 5 connection area of the contact with regulation stud 4 are increased, stable connection reliability is improve, also optimized
The structure of regulation stud 4, has saved manufacturing cost.Connecting bolt 5 is preferably hexagon socket head cap screw, the bolt bolt of hexagon socket head cap screw
Head area is larger, further increases stable connection reliability.For how to rotate regulation stud 4 to change the branch of movable supporting legs
Support height, can set keyway 45 by the bottom of regulation stud 4, be easy to rotate regulation stud 4 by keyway 45, it is also possible to
Hex hole preferably is processed as by by the 3rd shoulder hole 44, hex wrench acts on hex hole to rotate regulation spiral shell
Post 4.
Used as the improvement to above-mentioned preferred illustrative examples, as shown in Fig. 7~Fig. 9, nylon block 3 includes and the first rank
Cylindrical portion 31 and the square portion 32 for supporting movable supporting legs that terraced hole 42 coordinates, are provided with and connecting bolt 5 in cylindrical portion 31
The blind screw hole 33 of cooperation, the structure that square portion 32 rotates with fixed supporting leg box-shaped into limitation nylon block 3.The circle of nylon block 3
Post portion 31 is stably sleeved in the first shoulder hole 42, and connecting bolt 5 passes through the second shoulder hole 43 and the screw thread of blind screw hole 33
Connection, nylon block 3 is firmly secured in regulation stud 4.Square portion 32 and the side plane contact of fixed supporting leg case, form limitation
The structure that nylon block 3 is rotated, nylon block 3 rotates when preventing telescopic movable supporting leg, improves contact stabilization.More preferably
Ground, cylindrical portion 31 is in eccentric structure with square portion 32, and the area in the square portion 32 of the nylon block 3 of eccentric structure increases, remaining
The contact area of movable supporting legs increases (such as 30%), and this kind of structure extends the service life of nylon block 3, and also improves Buddhist nun
The stability of strutting system of imperial block 3.
Thus, the installation process of leg adjusting device of the present invention is as follows：
As shown in Fig. 2 the hold-down support 1 that will process tapped through hole 2 first is fixedly mounted on fixed supporting leg lower shoe 8
On, each one of left and right after supporting leg of living loads fixed supporting leg square chest, regulation stud 4 is screwed into hold-down support 1, then by Buddhist nun
Imperial block 3 is put into regulation stud 4, and nylon block 3 is fixed in regulation stud 4 with spring washer 6 and connecting bolt 5, is finally rotated and is adjusted
Inclination angle after section stud 4 stretches out movable supporting legs meets requirement, and last locking nut 7 is locked by regulation stud 4.
Present invention also offers a kind of telescopic leg, the telescopic leg has above-mentioned leg adjusting device.Due to
Leg adjusting device of the present invention need to only change the part of damage in Renewal process, saved replacement cost and changed convenient, tool
There is reliability higher, correspondingly, the telescopic leg that the present invention is provided also has above-mentioned beneficial effect, will not be repeated here.
The present invention has further related to a kind of mobilecrane, and the mobilecrane has above-mentioned telescopic
Supporting leg, the part of damage need to be only changed due to telescopic leg of the present invention in leg adjusting device Renewal process, saved more
It is convenient to change into originally and change, and with reliability higher, correspondingly, the mobilecrane that the present invention is provided also has with above-mentioned
Beneficial effect, also repeats no more herein.
Above in association with embodiment be described in detail for embodiments of the present invention, but the present invention is not limited to be retouched
The implementation method stated.For a person skilled in the art, in the case where principle of the invention and connotation is not departed from
Various changes, modification, equivalence replacement and modification are carried out to these implementation methods to still fall within protection scope of the present invention.
Claims (11)
1. a kind of leg adjusting device, on fixed supporting leg lower shoe (8), it is characterised in that including：Hold-down support (1),
Nylon block (3), regulation stud (4) and connecting bolt (5), the hold-down support (1) are provided with tapped through hole (2) and are fixedly connected
On the fixed supporting leg lower shoe (8), the regulation stud (4) is by the tapped through hole (2) installed in the fixed branch
On seat (1), the connecting bolt (5) is threadedly coupled through the regulation stud (4) with the nylon block (3), the nylon block
(3) including the square portion (32) for supporting movable supporting legs, the square portion (32) and fixed supporting leg box-shaped are into limiting the Buddhist nun
The structure that imperial block (3) rotates, realizes that movable supporting legs bearing height is adjusted by rotating the regulation stud (4).
2. leg adjusting device according to claim 1, it is characterised in that the hold-down support (1) and the fixed branch
Leg lower shoe (8) junction is stepped.
3. leg adjusting device according to claim 2, it is characterised in that the hold-down support (1) is removably secured
It is connected on the fixed supporting leg lower shoe (8).
4. leg adjusting device according to claim 1, it is characterised in that also including being arranged on the connecting bolt (5)
The spring washer (6) for holding out against the connecting bolt (5) and the regulation stud (4) between.
5. the leg adjusting device according to any one of Claims 1 to 4, it is characterised in that regulation stud (4) appearance
Face is provided with the external screw thread (41) coordinated with the tapped through hole (2), the regulation stud (4) and from top to bottom is provided with the first rank
Terraced hole (42), the second shoulder hole (43), the 3rd shoulder hole (44), the internal diameter of second shoulder hole (43) are respectively less than described first
Shoulder hole (42) and the internal diameter of the 3rd shoulder hole (44), the connecting bolt (5) through second shoulder hole (43) with
The nylon block (3) threaded connection, first shoulder hole (42) and the 3rd shoulder hole (44) respectively with the nylon block
(3) and the connecting bolt (5) bolt head adaptation.
6. leg adjusting device according to claim 5, it is characterised in that the nylon block (3) also includes and described the
The interior spiral shell coordinated with the connecting bolt (5) is provided with the cylindrical portion (31) that one shoulder hole (42) coordinates, the cylindrical portion (31)
Line blind hole (33).
7. leg adjusting device according to claim 6, it is characterised in that the cylindrical portion (31) and the square portion
(32) in eccentric structure.
8. the leg adjusting device according to any one of Claims 1 to 4, it is characterised in that regulation stud (4) bottom
It is provided with the keyway (45) for rotating the regulation stud (4).
9. leg adjusting device according to claim 5, it is characterised in that the 3rd shoulder hole (44) is hexagon
Hole.
10. a kind of telescopic leg, it is characterised in that with the leg adjusting device described in any one of claim 1~9.
11. a kind of mobilecranes, it is characterised in that with the telescopic leg described in claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047548.6A CN105439013B (en) | 2015-01-21 | 2015-01-21 | Leg adjusting device, telescopic leg and mobilecrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510047548.6A CN105439013B (en) | 2015-01-21 | 2015-01-21 | Leg adjusting device, telescopic leg and mobilecrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105439013A CN105439013A (en) | 2016-03-30 |
| CN105439013B true CN105439013B (en) | 2017-06-20 |
Family
ID=55549738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510047548.6A Active CN105439013B (en) | 2015-01-21 | 2015-01-21 | Leg adjusting device, telescopic leg and mobilecrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105439013B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201390612Y (en) * | 2009-03-20 | 2010-01-27 | 湖南运想重工科技有限公司 | Sliding block assembly |
| CN101670977A (en) * | 2009-09-30 | 2010-03-17 | 长沙中联重工科技发展股份有限公司 | Landing-lag gap adjusting device |
| CN202098993U (en) * | 2011-05-26 | 2012-01-04 | 徐州重型机械有限公司 | Crane supporting leg and combined-type adjusting device thereof |
| CN202320242U (en) * | 2011-12-06 | 2012-07-11 | 中联重科股份有限公司 | Landing leg gap adjusting device and engineering machinery |
| CN202358852U (en) * | 2011-05-24 | 2012-08-01 | 安徽星马汽车股份有限公司 | Device for adjusting spacing between horizontal supporting legs of crane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3350230B2 (en) * | 1994-06-28 | 2002-11-25 | 株式会社タダノ | Telescopic box support device |
-
2015
- 2015-01-21 CN CN201510047548.6A patent/CN105439013B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201390612Y (en) * | 2009-03-20 | 2010-01-27 | 湖南运想重工科技有限公司 | Sliding block assembly |
| CN101670977A (en) * | 2009-09-30 | 2010-03-17 | 长沙中联重工科技发展股份有限公司 | Landing-lag gap adjusting device |
| CN202358852U (en) * | 2011-05-24 | 2012-08-01 | 安徽星马汽车股份有限公司 | Device for adjusting spacing between horizontal supporting legs of crane |
| CN202098993U (en) * | 2011-05-26 | 2012-01-04 | 徐州重型机械有限公司 | Crane supporting leg and combined-type adjusting device thereof |
| CN202320242U (en) * | 2011-12-06 | 2012-07-11 | 中联重科股份有限公司 | Landing leg gap adjusting device and engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105439013A (en) | 2016-03-30 |
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