CN201980860U - Supporting leg of crane - Google Patents
Supporting leg of crane Download PDFInfo
- Publication number
- CN201980860U CN201980860U CN2010206888714U CN201020688871U CN201980860U CN 201980860 U CN201980860 U CN 201980860U CN 2010206888714 U CN2010206888714 U CN 2010206888714U CN 201020688871 U CN201020688871 U CN 201020688871U CN 201980860 U CN201980860 U CN 201980860U
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- CN
- China
- Prior art keywords
- movable supporting
- supporting leg
- supporting legs
- parts
- hoisting crane
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a supporting leg of a crane, which comprises a first movable supporting leg, a second movable supporting leg for containing the first movable supporting leg, an adjusting device for adjusting the relative positions of the first movable supporting leg and the second movable supporting leg, wherein the adjusting device comprises a fixing component and an adjusting component, the fixing component is fixedly connected with the second movable supporting leg, the end part of the adjusting component is overlaid with the surface of the first movable supporting leg, and with the fixing component, the adjusting component has at least two fixed connection positions along the axial direction of the adjusting component. The adjusting component and the fixing component are connected at different positions, so that the relative positions of the first movable supporting leg and the second movable supporting leg are adjusted. The fixing component can increase the connection area of the adjusting component and the second movable supporting leg, so that the connection strength can be increased. When the supporting leg works, the stressed area is also increased, the probability that the adjusting component is crushed can be reduced, and the reliability of the supporting leg of the crane can be improved.
Description
Technical field
The utility model relates to the hoisting crane field, particularly relates to a kind of hoisting crane supporting leg.
Background technology
Supporting leg is the important composition parts of hoisting crane, supporting leg mainly be by with being connected of vehicle frame after be used for support frame.The supporting leg pattern of hoisting crane mainly is divided into two kinds at present, and a kind of is the H type, and when the hoisting crane hoisting operation, the supporting leg that is in vehicle frame leading portion and rear end stretches out to both sides respectively, is the H shape from overlooking; A kind of is the X type, and when crane job, the supporting leg that is in the vehicle frame both sides is swung sideward out respectively, is the X shape from overlooking.But no matter be the sort of leg structure form, the power with car load when the final effect of supporting leg all is crane job is delivered on the ground by supporting leg, support frame, the safety and the stability of car load when guaranteeing hoisting crane work.
The hoisting crane supporting leg comprises first movable supporting legs and second movable supporting legs, and first movable supporting legs stretches out and withdraws along the square chest of second movable supporting legs under the effect of hydraulic ram.Because action of gravity, first movable supporting legs stretches out in the process and changes with second the cooperating of movable supporting legs contact position, makes the movable supporting legs of winning stretch out the back and exists bigger saggingly, and stretches out jitter phenomenon is arranged in the process easily.The hoisting crane supporting leg generally takes to add the method that nylon is regulated bolt on the second movable supporting legs square chest cover plate and base plate in the market, regulate bolt in advance, jitter phenomenon is eliminated in cooperation when changing first movable supporting legs turnover square chest, and effectively reduces the sag of chain after first movable supporting legs stretches out.
Please refer to Fig. 1, Fig. 1 is the structural representation of a kind of typical crane supporting leg in the prior art.
When the state of stretching entirely transformed, first movable supporting legs, second movable supporting legs were protruding at fully compensated state for movable supporting legs.Because bigger gap between supporting leg self gravitation and two supporting leg box-shapeds, have certain sagging after supporting leg stretches out.The hoisting crane supporting leg generally adopts the method that two groups of adjusting parts are regulated in the market.As shown in Figure 1, by first adjusting part 11 base plate of jack-up first movable supporting legs 12 upwards, by second adjusting part 13 to the top board that presses down first movable supporting legs 12.By the mode of last depression, reach and regulate the purpose of first movable supporting legs 12 with respect to second movable supporting legs, 14 square chest positions, when being stretched out, supporting leg keeps horizontality substantially.
Please refer to Fig. 2, Fig. 2 is the partial enlarged drawing of A part among Fig. 1.
Second adjusting part 13 comprises two parts: regulate bolt 131 and lock nut 132, regulate bolt 131 and adopt nylon material, be connected by the upper cover plate of screw thread with second movable supporting legs 14, regulate bolt 131 lower surfaces and contact, regulate behind the gap usefulness lock nut 132 and will regulate bolt 131 and lock with the upper cover plate of first movable supporting legs 12.
The bolt that second adjusting part 13 is made for nylon is threaded with the movable supporting legs upper cover plate of ferrous material, has following defective:
A) second movable supporting legs, 14 upper cover plate thickness are limited, and effective tooth number of connecting thread is less, when single supporting leg weight is big, and the Joint strenght deficiency;
B) during crane job, vertical oil cylinder support ground, this moment, first movable supporting legs 12 did not contact with adjusting bolt 131; Vertical oil cylinder is packed up, first movable supporting legs 12 with regulate bolt 131 and begin contact, there is the impulsive force of sudden change in the adjusting bolt 131 of nylon system, cause the screw thread existence by the possibility of conquassation.
How to keep on the basis of supporting leg stress balance of hoisting crane supporting leg, the reliability of the control apparatus of improving the standard is the present technical issues that need to address of those skilled in the art.
The utility model content
The purpose of this utility model provides a kind of hoisting crane supporting leg, the stressed more balance of this supporting leg, and sound construction, and reliability is higher.
For realizing above-mentioned utility model purpose, the utility model provides a kind of hoisting crane supporting leg, comprise first movable supporting legs and second movable supporting legs that holds described first movable supporting legs, and the control apparatus of regulating the relative position of described first movable supporting legs and described second movable supporting legs, described control apparatus comprises fixed parts and regulates parts, described fixed parts is captiveed joint with described second movable supporting legs, the surface of the end of described adjusting parts and described first movable supporting legs overlap joint, described adjusting parts axially have at least two with described fixed parts along it and captive joint the position.
Preferably, described fixed parts is specially the threaded line pipe of captiveing joint with the upper cover plate of described second movable supporting legs, and described adjusting parts are the bolt that cooperates with described threaded line pipe.
Preferably, described threaded line pipe and described upper cover plate welding.
Preferably, the upper surface of described threaded line pipe and described upper cover plate and lower surface all weld.
Preferably, described adjusting parts comprise rigid bodies portion and wear-resisting portion, and described rigid bodies portion is connected with described fixed parts, described wear-resisting with described first movable supporting legs overlap joint.
Preferably, described rigid bodies portion and described wear-resisting one have tapped bore, and another person has the double-screw bolt that cooperates with described tapped bore.
Preferably, described rigid bodies portion and described wear-resisting one have groove, and another person has the projection with described groove fit.
Preferably, described groove is a T type groove.
Hoisting crane supporting leg provided by the utility model comprises first movable supporting legs and second movable supporting legs, and first movable supporting legs is flexible in the inside of second movable supporting legs.In order to keep first movable supporting legs and second movable supporting legs maintenance level as far as possible in the course of the work, the hoisting crane supporting leg also comprises the control apparatus of the relative position of regulating described first movable supporting legs and described second movable supporting legs.Unlike the prior art be, described control apparatus comprises fixed parts and regulates parts, described fixed parts is captiveed joint with described second movable supporting legs, the surface of the end of described adjusting parts and described first movable supporting legs overlap joint, described adjusting parts axially have at least two with described fixed parts along it and captive joint the position.When the adjusting parts were connected different positions with fixed parts, the relative position of first movable supporting legs and second movable supporting legs obtained adjusting.Though it is limited to form the thickness of side plate of second movable supporting legs, by increasing the area that is connected of regulating parts and second movable supporting legs, increase Joint strenght with the fixed parts of the second movable supporting legs captive joint.When supporting leg was worked, its area of thrust surface also increased, and had reduced and had regulated parts by the possibility of conquassation, had improved the reliability of hoisting crane supporting leg.
A kind of preferred embodiment in, described fixed parts is specially the threaded line pipe of captiveing joint with the upper cover plate of described second movable supporting legs, described adjusting parts are the bolt that cooperates with described threaded line pipe.When regulating the relative position between first movable supporting legs and second movable supporting legs, regulate the cooperation position of bolt and threaded line pipe, behind the desired location, use nut locked again, reach the purpose of adjusting.Because the length that threaded line pipe cooperates with bolt can be adjusted as required, is subjected to the influence of the second movable supporting legs side plate less, therefore, the reliability of supporting leg obtains bigger raising.And threaded line pipe and bolted connection are convenient, technology maturation, and reliable in structure is easy to realize, helps reducing the cost of control apparatus.
In another preferred embodiment, described adjusting parts comprise rigid bodies portion and wear-resisting portion, and described rigid bodies portion and described fixed parts are connected, described wear-resisting and described first movable supporting legs overlap joint.Regulating parts will cooperate with fixed parts, plays the effect that prevents that first movable supporting legs is sagging, therefore, needs the intensity of certain rigidity.Meanwhile, during the work of hoisting crane supporting leg, the upper cover plate of first movable supporting legs and the bottom surface friction of regulating parts need to regulate parts and have certain resistance to abrasion.Rigid bodies portion cooperates with wear-resisting, and rigid bodies portion cooperates with fixed parts, satisfies the requirement of strength of regulating parts, simultaneously, wear-resisting portion has good resistance to abrasion, can satisfy the wear-resisting demand of regulating parts, to prolong the service life of control apparatus, improve the reliability of hoisting crane supporting leg.
Description of drawings
Fig. 1 is the structural representation of a kind of typical crane supporting leg in the prior art;
Fig. 2 is the partial enlarged drawing of A part among Fig. 1;
Fig. 3 provides the structural representation of a kind of specific embodiment of hoisting crane supporting leg for the utility model;
Fig. 4 is the partial enlarged drawing of B part among Fig. 3;
Fig. 5 is provided a kind of specific embodiment of threaded line pipe and the second movable supporting legs bonded assembly structural representation by the utility model;
Fig. 6 provides the structural representation of regulating a kind of specific embodiment of parts for the utility model;
Fig. 7 provides the structural representation of regulating the another kind of specific embodiment of parts for the utility model.
The specific embodiment
Core of the present utility model provides a kind of hoisting crane supporting leg, the stressed more balance of this supporting leg, and reliability is higher, obtains its service life prolonging.
The left and right noun of locality that waits that this paper is related is that benchmark defines with the direction of stretching perpendicular to supporting leg; The inside and outside noun of locality that waits that this paper is related is to be that benchmark defines with each outrigger plate of forming supporting leg.The noun of locality that should be appreciated that herein to be adopted should not limit the protection domain of this patent.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3, Fig. 3 provides the structural representation of a kind of specific embodiment of hoisting crane supporting leg for the utility model, and direction shown in the arrow is the force direction of control apparatus to first movable supporting legs among the figure.
Hoisting crane supporting leg provided by the utility model comprises first movable supporting legs 2 and second movable supporting legs 3, and first movable supporting legs 2 is flexible in the inside of second movable supporting legs 3.In order to keep first movable supporting legs 2 and second movable supporting legs 3 maintenance level as far as possible in the course of the work, the hoisting crane supporting leg also comprises the control apparatus 4 of the relative position of regulating first movable supporting legs 2 and second movable supporting legs 3.Unlike the prior art be, control apparatus 4 comprises fixed parts 41 and regulates parts 42, fixed parts 41 is captiveed joint with second movable supporting legs 3, regulate the end of parts 42 and the surface overlap joint of first movable supporting legs 2, regulate parts 42 and have at least two along its axial and fixed parts 41 and captive joint the position.When adjusting parts 42 were connected different positions with fixed parts 41, the relative position of first movable supporting legs 2 and second movable supporting legs 3 obtained adjusting.Though it is limited to form the thickness of side plate of second movable supporting legs 3, can increase the area that is connected of regulating parts 42 and second movable supporting legs 3, increase Joint strenght by fixed parts 41 with second movable supporting legs, 3 captive joints.When supporting leg was worked, its area of thrust surface also increased, and had reduced and had regulated parts 42 by the possibility of conquassation, had improved the reliability of hoisting crane supporting leg.
Please refer to Fig. 4, Fig. 4 is the partial enlarged drawing of B part among Fig. 3.
In a kind of concrete embodiment, fixed parts 41 is specifically as follows the threaded line pipe of captiveing joint with the upper cover plate 31 of second movable supporting legs 3, regulates parts 42 and can be the bolt that cooperates with threaded line pipe.When regulating the relative position between first movable supporting legs 2 and second movable supporting legs 3, regulate the cooperation position of bolt and threaded line pipe, behind the desired location, use nut locked again, reach the purpose of adjusting.Because the length that threaded line pipe cooperates with bolt can be adjusted as required, is subjected to the influence of second movable supporting legs, 3 side plates less, therefore, the reliability of supporting leg obtains bigger raising.And threaded line pipe and bolted connection are convenient, technology maturation, and reliable in structure is easy to realize, helps reducing the cost of control apparatus 4.
Obviously, fixed parts 41 and adjusting parts 42 also can be other structures, such as being spring pin etc., captive joint with second movable supporting legs 3 as long as can satisfy fixed parts 41, have a plurality of connection locations between adjusting parts 42 and the fixed parts 41, just can satisfy requirement of the present utility model.
In addition, control apparatus 4 provided by the utility model is except being used in the top of supporting leg, regulate the horizontal relative position of first movable supporting legs 2 and second movable supporting legs 3, also can be used in other position, its central role be to improve fixed parts 41 with regulate parts 42 be connected area and Joint strenght.
Please refer to Fig. 5, Fig. 5 is provided a kind of specific embodiment of threaded line pipe and second movable supporting legs, 3 bonded assembly structural representations by the utility model.
Particularly, threaded line pipe can weld with upper cover plate 31.Welding is the captive joint mode of using always, and it is connected firmly, and can increase the reliability of supporting leg.Further, threaded line pipe can all weld with the upper surface and the lower surface of upper cover plate 31, to improve the bonding area of threaded line pipe and upper cover plate 31, increases weld strength.
Can do to improve further to above-mentioned hoisting crane supporting leg.
Please refer to Fig. 6, Fig. 6 provides the structural representation of regulating a kind of specific embodiment of parts for the utility model.
A kind of preferred embodiment in, regulate parts 42 and comprise rigid bodies portion 421 and wear-resisting 422, rigid bodies portion 421 is connected with fixed parts 41, wear-resisting 422 overlaps with first movable supporting legs 2.Regulating parts 42 will cooperate with fixed parts 41, plays the effect that prevents that first movable supporting legs 2 is sagging, therefore, and the intensity of the rigidity that needs are certain.Meanwhile, during the work of hoisting crane supporting leg, the upper cover plate of first movable supporting legs 2 and the bottom surface friction of regulating parts 42 need to regulate parts 42 and have certain resistance to abrasion.Rigid bodies portion 421 cooperates with wear-resisting 422, rigid bodies portion 421 cooperates with fixed parts 41, satisfy the requirement of strength of regulating parts 42, simultaneously, has good resistance to abrasion for wear-resisting 422, can satisfy the wear-resisting demand of regulating parts 42,, improve the reliability of hoisting crane supporting leg to prolong the service life of control apparatus 4.Wherein, rigid bodies portion 421 can be that metallic material forms, and wear-resisting 422 can be that nylon material forms.
Particularly, rigid bodies portion 421 and wear-resisting 422 can be by being threaded, and promptly rigid bodies portion 421 and wear-resisting 422 1 have tapped bore, and another person has the double-screw bolt that cooperates with tapped bore.After using a period of time, wear-resisting 422 generation wearing and tearing need to change, the easy installation and removal that is threaded, and also solid and reliable, can improve the maintainability of regulating parts 42.
Please refer to Fig. 7, Fig. 7 provides the structural representation of regulating the another kind of specific embodiment of parts for the utility model.
In the concrete embodiment of another kind, rigid bodies portion 421 can be connected with projection by groove with wear-resisting 422, and promptly two one have groove in all, and another person has the projection with groove fit, makes wear-resisting 422 can realize Assembly ﹠Disassembly by groove.
Particularly, groove can be T type groove, the projection of projection for matching with T type groove.T type groove structure is simple, is easy to processing and realizes, can reduce the tooling cost of regulating parts 42.
Obviously, above-mentioned adjusting parts 42 can be by above-mentioned rigid material and high-abrasive material cast molding, and on the single-piece outer wall of cast molding tapping, form and regulate parts 42.It is a little with respect to split type maintainability difference just to regulate parts 42 like this.Should be appreciated that such adjusting parts 42 also can realize the purpose of this utility model, also should belong to protection domain of the present utility model.
More than hoisting crane supporting leg provided by the utility model is described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. hoisting crane supporting leg, comprise first movable supporting legs and second movable supporting legs that holds described first movable supporting legs, and the control apparatus of regulating the relative position of described first movable supporting legs and described second movable supporting legs, it is characterized in that, described control apparatus comprises fixed parts and regulates parts, described fixed parts is captiveed joint with described second movable supporting legs, the surface of the end of described adjusting parts and described first movable supporting legs overlap joint, described adjusting parts axially have at least two with described fixed parts along it and captive joint the position.
2. hoisting crane supporting leg according to claim 1 is characterized in that described fixed parts is specially the threaded line pipe of captiveing joint with the upper cover plate of described second movable supporting legs, and described adjusting parts are the bolt that cooperates with described threaded line pipe.
3. hoisting crane supporting leg according to claim 2 is characterized in that, described threaded line pipe and the welding of described upper cover plate.
4. hoisting crane supporting leg according to claim 3 is characterized in that, the upper surface and the lower surface of described threaded line pipe and described upper cover plate all weld.
5. according to each described hoisting crane supporting leg of claim 1 to 4, it is characterized in that described adjusting parts comprise rigid bodies portion and wear-resisting portion, described rigid bodies portion is connected with described fixed parts, described wear-resisting with described first movable supporting legs overlap joint.
6. hoisting crane supporting leg according to claim 5 is characterized in that, described rigid bodies portion and described wear-resisting one have tapped bore, and another person has the double-screw bolt that cooperates with described tapped bore.
7. hoisting crane supporting leg according to claim 5 is characterized in that, described rigid bodies portion and described wear-resisting one have groove, and another person has the projection with described groove fit.
8. hoisting crane supporting leg according to claim 7 is characterized in that, described groove is a T type groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206888714U CN201980860U (en) | 2010-12-29 | 2010-12-29 | Supporting leg of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206888714U CN201980860U (en) | 2010-12-29 | 2010-12-29 | Supporting leg of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201980860U true CN201980860U (en) | 2011-09-21 |
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ID=44608324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206888714U Expired - Fee Related CN201980860U (en) | 2010-12-29 | 2010-12-29 | Supporting leg of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201980860U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128829A (en) * | 2015-09-09 | 2015-12-09 | 北汽福田汽车股份有限公司 | Supporting leg, supporting table and supporting leg gap adjusting mechanism and engineering machine |
| CN108357826A (en) * | 2018-03-07 | 2018-08-03 | 河南飞龙工程机械制造有限公司 | A kind of column clearance adjustable type garbage compression station |
-
2010
- 2010-12-29 CN CN2010206888714U patent/CN201980860U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105128829A (en) * | 2015-09-09 | 2015-12-09 | 北汽福田汽车股份有限公司 | Supporting leg, supporting table and supporting leg gap adjusting mechanism and engineering machine |
| CN108357826A (en) * | 2018-03-07 | 2018-08-03 | 河南飞龙工程机械制造有限公司 | A kind of column clearance adjustable type garbage compression station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20191229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |