CN102602829A - engineering machinery and landing leg positioning and supporting device thereof - Google Patents
engineering machinery and landing leg positioning and supporting device thereof Download PDFInfo
- Publication number
- CN102602829A CN102602829A CN2012100888396A CN201210088839A CN102602829A CN 102602829 A CN102602829 A CN 102602829A CN 2012100888396 A CN2012100888396 A CN 2012100888396A CN 201210088839 A CN201210088839 A CN 201210088839A CN 102602829 A CN102602829 A CN 102602829A
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- Prior art keywords
- supporting
- supporting leg
- positioning
- oil cylinder
- strut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides engineering machinery and a landing leg positioning and supporting device of engineering machinery. The landing leg positioning and supporting device comprises an oil cylinder installed on a chassis of the engineering machinery; a supporting rod, wherein one end of the supporting rod is in pivoted connection with a piston rod of the oil cylinder while the other end of the supporting rod is in pivoted connection with a landing leg of the engineering machinery; and a locking piece that locks the piston rod in at least a position that is relatively fixed with the chassis. The landing leg positioning and supporting device drives the supporting rod through the landing leg to swing, position and support the landing leg, so that the oil cylinder only has the function of rotation so as to reduce the size of the oil cylinder and lower the cost. In addition, the over-positioning problem of the supporting rod and the oil cylinder is avoided, so that the length of the supporting rod does not need to be adjusted, and the landing leg positioning and supporting device has the advantages of convenience in operation and high work efficiency.
Description
Technical field
The present invention relates to engineering machinery field, more specifically, relate to a kind of construction machinery and equipment and supporting leg device for positioning and supporting thereof.
Background technology
A lot of engineering trucks all have supporting leg in the prior art, for example the wheel crane of large-tonnage, super-tonnage.With the wheel crane is example, and it mainly adopts big span radiant type supporting leg, big because of carrying; The leg structure Cross section Design increases; Thereby, can not as medium and small tonnage wheel crane, supporting leg be designed on vehicle frame, so extensively adopt radioactive leg structure form.This leg structure form at first need realize showing and regaining of supporting leg.
Fig. 1-Fig. 3 shows the structural representation of the device for positioning and supporting of three kinds of supporting legs of the prior art respectively.
In device for positioning and supporting shown in Figure 1, an end of oil cylinder 30 is installed on the chassis 10, and the other end is connected with supporting leg 20.Like this, need not increase other parts, only need the length of oil cylinder 30 be increased, can promptly realize swing location and support, and bear certain load supporting leg.But its shortcoming is to have increased cost.
The difference of Fig. 2 and Fig. 1 is, on the basis of Fig. 1, has increased strut 40.Wherein, an end of strut 40 is connected with chassis 10, and the other end is connected with supporting leg 20.Strut 40 is arranged on the outside of oil cylinder 30.Therefore, the length of strut 40 is longer, has the strut stability problem of elongate rod.The difference of Fig. 3 and Fig. 2 is that the strut 40 of Fig. 3 is positioned at the inboard of oil cylinder 30, and the length of oil cylinder 30 is compared with Fig. 2 and can be increased to some extent.Device for positioning and supporting among Fig. 2 and Fig. 3 makes the relative position between supporting leg 20 and the chassis 10 more fixing, and the moment of gyration of getting on the bus in starting revolution and turning course is delivered to ground through the stable triangle mechanism that chassis 10, strut 40 and supporting leg 20 constitute.Please refer to Fig. 2 and Fig. 3, when supporting leg is arranged and regain, need earlier the pin of four struts is unpluged, insert pin again after waiting the supporting leg motion to put in place.In this process, because of there were the problem of location in oil cylinder and strut, pin is difficult to contraposition, and more complicated operates.
In addition, in three kinds of modes of Fig. 1-shown in Figure 3, all need adopt four oil cylinders, could realize positioning supports, have the high shortcoming of cost four supporting legs as actuating device.
Summary of the invention
The present invention aims to provide a kind of construction machinery and equipment and supporting leg device for positioning and supporting thereof, and the prior art cost is high to solve, unhandy problem.
For solving the problems of the technologies described above, according to an aspect of the present invention, a kind of supporting leg device for positioning and supporting of construction machinery and equipment is provided, comprising: oil cylinder, oil cylinder are installed on the chassis of construction machinery and equipment; Strut, an end of strut is connected with the piston rod of oil cylinder pivotly, and the other end is connected with the supporting leg of construction machinery and equipment pivotly; Locking piece, locking piece with piston rod be locked in relatively-stationary at least one position, chassis on.
Further, the supporting leg device for positioning and supporting also comprises the guide rail that is arranged on the chassis, oil cylinder and guide rail sliding block joint.
Further, guide rail is provided with the lock hole that cooperates with locking piece.
Further, the position corresponding to the position of stretching out fully of oil cylinder and contraction fully of guide rail is respectively arranged with a lock hole.
Further, guide rail has the C tee section, and the opening of C tee section upwards.
Further, the both sides of oil cylinder are respectively arranged with one or more struts.
Further, the cross section of strut is rectangle, circle, annular or variable section.
Further, locking piece is a bearing pin.
Further, when supporting leg was opened fully, the angle of strut and supporting leg was 90 ° ± 15 °.
According to another aspect of the present invention, a kind of construction machinery and equipment is provided, has comprised supporting leg and the supporting leg device for positioning and supporting that is used for supporting leg is positioned and supports, this supporting leg device for positioning and supporting is above-mentioned supporting leg device for positioning and supporting.
The present invention drives strut through supporting leg supporting leg is shown, located and supports, and makes oil cylinder only play the effect of rotation, thereby has reduced the oil cylinder size, has reduced cost.In addition, there is not the mistake orientation problem of strut and oil cylinder in the present invention, and the length that need not to regulate strut has characteristics easy to operate, high efficiency.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of device for positioning and supporting of the supporting leg of first kind of form of the prior art;
Fig. 2 has schematically shown the structural representation of device for positioning and supporting of the supporting leg of second kind of form of the prior art;
Fig. 3 has schematically shown the structural representation of device for positioning and supporting of the supporting leg of the third form of the prior art;
Fig. 4 has schematically shown the structural representation of the device for positioning and supporting among the present invention when motoring condition;
Fig. 5 has schematically shown device for positioning and supporting among the present invention structural representation in working order the time;
Fig. 6 has schematically shown the sectional view of first kind of strut;
Fig. 7 has schematically shown the sectional view of second kind of strut;
Fig. 8 has schematically shown the sectional view of the third strut; And
Fig. 9 has schematically shown the schematic cross-section of guide rail.
Reference numeral among the figure: 10, chassis; 20, supporting leg; 30, oil cylinder; 40, strut; 50, locking piece; 60, guide rail.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As first aspect of the present invention, a kind of supporting leg device for positioning and supporting of construction machinery and equipment is provided.Like Fig. 4 and shown in Figure 5, supporting leg device for positioning and supporting of the present invention comprises: oil cylinder 30, oil cylinder 30 are installed on the chassis 10 of construction machinery and equipment; Strut 40, an end of strut 40 is connected with the piston rod of oil cylinder 30 pivotly, and the other end is connected with the supporting leg 20 of construction machinery and equipment pivotly; Locking piece 50, locking piece 50 with piston rod be locked in 10 relatively-stationary at least one position, chassis on.Preferably, oil cylinder 30 is along the direction setting of going of construction machinery and equipment.In a preferred embodiment; The both sides of oil cylinder 30 are respectively arranged with one or more struts 40; So just can use an oil cylinder to realize positioning supports to two supporting legs of its both sides; Also reduce needed valve of hydraulic pressure and corresponding electrical control equipment accordingly, thereby reduced cost, also improved reliability simultaneously.Preferably, locking piece 50 is bearing pins, and certainly, locking piece 50 also can be other form, for example bolt etc.
When motoring condition, the supporting leg device for positioning and supporting draws in position shown in Figure 4.At this moment, oil cylinder 30 is positioned at the state that stretches out fully, and the supporting leg 20 of both sides is in the state of gathering, and supporting leg 20 is in the lock state under the effect of locking piece 50, swings in the driving process of chassis to avoid supporting leg.
Please refer to Fig. 5, when needs are shown supporting leg 20, earlier with operational lock spare 50, to remove locking to piston rod.Then, oil cylinder 30 is shunk, and an end that drives strut 40 moves together, thereby supporting leg 20 is shown laterally.When oil cylinder 30 shrink fully put in place after, supporting leg 20 also moves and puts in place.At this moment, operational lock spare 50 locks piston rod again.The support of supporting leg relies on strut to carry out fully, makes oil cylinder add two effects of support bearing by rotation of the prior art, has become only to have the effect of rotation, thereby has reduced the oil cylinder size, has further reduced cost.In addition; Bear moment of gyration and the contrast of turning round force of inertia with increase strut of the prior art; There is not the mistake orientation problem of strut and oil cylinder in the present invention, need not to regulate the length (needing to regulate the length of strut in the prior art) of strut, thereby has improved work efficiency.
In a preferred embodiment, the supporting leg device for positioning and supporting also comprises the guide rail 60 that is arranged on the chassis 10, oil cylinder 30 and guide rail 60 sliding block joints.Preferably, guide rail 60 is provided with the lock hole that cooperates with locking piece 50.Further, the position corresponding to the position of stretching out fully of oil cylinder 30 and contraction fully of guide rail 60 is respectively arranged with a lock hole.Like this, when needs lock, only need lock hole on the locking piece 50 insertion guide rails 60 and the respective lock place on the piston rod be got final product.Because the length of the state that stretches out fully of piston rod and complete contraction state is relatively more fixing comparatively speaking, is easy to locking piece 50 is aimed at lock hole, thereby makes the operation of locking make no longer complicated.
As shown in Figure 5, when supporting leg 20 was opened fully, strut 40 was 90 ° ± 15 ° with the angle of supporting leg 20; Thereby changed that this angle is generally less than 45 ° problem in the prior art, and having improved the supporting effect of strut, the size that has reduced strut is (because when bearing revolution force of inertia and moment of gyration; Strut is similar to positive pressure; Thereby component is little, and its size also correspondingly reduces), alleviated the weight of strut.
Like Fig. 6, shown in 7 and 8, the cross section of strut 40 can be (for example, being different in the cross section of diverse location) of rectangle, circle (or other section form is bar-shaped), annular (or tubulose of other section form) or variable section, to be adapted to different needs.
As shown in Figure 9, guide rail 60 has the C tee section, and the opening of C tee section upwards.Lock hole is arranged on the two ends of guide rail 60.
As second aspect of the present invention, a kind of construction machinery and equipment is provided.Please refer again to Fig. 4 and Fig. 5, the construction machinery and equipment among the present invention comprises supporting leg and the supporting leg device for positioning and supporting that is used for supporting leg is positioned support, and this supporting leg device for positioning and supporting is the supporting leg device for positioning and supporting among above-mentioned each embodiment.Especially, construction machinery and equipment is a hoisting crane.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the supporting leg device for positioning and supporting of a construction machinery and equipment is characterized in that, comprising:
Oil cylinder (30), said oil cylinder (30) are installed on the chassis (10) of said construction machinery and equipment;
Strut (40), an end of said strut (40) is connected with the piston rod of said oil cylinder (30) pivotly, and the other end is connected with the supporting leg (20) of said construction machinery and equipment pivotly;
Locking piece (50), said locking piece (50) with said piston rod be locked in said chassis (10) relatively-stationary at least one position on.
2. supporting leg device for positioning and supporting according to claim 1 is characterized in that, said supporting leg device for positioning and supporting also comprises the guide rail (60) that is arranged on the said chassis (10), said oil cylinder (30) and said guide rail (60) sliding block joint.
3. supporting leg device for positioning and supporting according to claim 2 is characterized in that, said guide rail (60) is provided with the lock hole that cooperates with said locking piece (50).
4. supporting leg device for positioning and supporting according to claim 3 is characterized in that, the position corresponding to the position of stretching out fully of said oil cylinder (30) and contraction fully of said guide rail (60) is respectively arranged with a said lock hole.
5. supporting leg device for positioning and supporting according to claim 2 is characterized in that, said guide rail (60) has the C tee section, and the opening of said C tee section upwards.
6. according to each described supporting leg device for positioning and supporting among the claim 1-5, it is characterized in that the both sides of said oil cylinder (30) are respectively arranged with one or more described struts (40).
7. according to each described supporting leg device for positioning and supporting among the claim 1-5, it is characterized in that the cross section of said strut (40) is rectangle, circle, annular or variable section.
8. according to each described supporting leg device for positioning and supporting among the claim 1-5, it is characterized in that said locking piece (50) is a bearing pin.
9. according to each described supporting leg device for positioning and supporting among the claim 1-5, it is characterized in that when said supporting leg (20) when opening fully, said strut (40) is 90 ° ± 15 ° with the angle of said supporting leg (20).
10. a construction machinery and equipment comprises supporting leg and the supporting leg device for positioning and supporting that is used for said supporting leg is positioned and supports, and it is characterized in that said supporting leg device for positioning and supporting is each described supporting leg device for positioning and supporting among the claim 1-9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210088839.6A CN102602829B (en) | 2012-03-29 | 2012-03-29 | Engineering machinery and landing leg positioning and supporting device thereof |
| PCT/CN2012/082037 WO2013143264A1 (en) | 2012-03-29 | 2012-09-26 | Engineering machinery and landing leg positioning and supporting device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210088839.6A CN102602829B (en) | 2012-03-29 | 2012-03-29 | Engineering machinery and landing leg positioning and supporting device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102602829A true CN102602829A (en) | 2012-07-25 |
| CN102602829B CN102602829B (en) | 2014-02-19 |
Family
ID=46520707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210088839.6A Active CN102602829B (en) | 2012-03-29 | 2012-03-29 | Engineering machinery and landing leg positioning and supporting device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102602829B (en) |
| WO (1) | WO2013143264A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102849133A (en) * | 2012-09-27 | 2013-01-02 | 中联重科股份有限公司 | Hoisting equipment |
| WO2013143264A1 (en) * | 2012-03-29 | 2013-10-03 | 中联重科股份有限公司 | Engineering machinery and landing leg positioning and supporting device thereof |
| CN104389851A (en) * | 2014-11-20 | 2015-03-04 | 徐州徐工施维英机械有限公司 | Hydraulic limiting device and concrete pump truck |
| CN107500122A (en) * | 2017-08-25 | 2017-12-22 | 郑州新大方重工科技有限公司 | A kind of folding crane |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112754409B (en) * | 2021-01-13 | 2022-08-30 | 中南大学湘雅二医院 | Tissue retractor used in oral surgery |
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| CN202053998U (en) * | 2011-05-24 | 2011-11-30 | 长沙中联重工科技发展股份有限公司 | Engineering machinery and support device thereof |
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| FR1594609A (en) * | 1968-09-19 | 1970-06-08 | ||
| DE20305683U1 (en) * | 2003-04-08 | 2004-08-19 | Liebherr-Werk Ehingen Gmbh | Mobile crane |
| CN201598124U (en) * | 2009-09-25 | 2010-10-06 | 广东粤海汽车有限公司 | Underlying H-type front supporting device for hoisted vehicles |
| CN201686987U (en) * | 2010-05-10 | 2010-12-29 | 天津宏九地工程机械有限公司 | Walking type pile hammer chassis and walking type pile hammer comprising same |
| CN201825676U (en) * | 2010-10-20 | 2011-05-11 | 徐州重型机械有限公司 | Supporting leg supporting device and mobile crane |
| CN102602829B (en) * | 2012-03-29 | 2014-02-19 | 中联重科股份有限公司 | Engineering machinery and landing leg positioning and supporting device thereof |
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2012
- 2012-03-29 CN CN201210088839.6A patent/CN102602829B/en active Active
- 2012-09-26 WO PCT/CN2012/082037 patent/WO2013143264A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU574384A1 (en) * | 1975-12-15 | 1977-09-30 | Специальное Конструкторское Бюро По Стреловым Самоходным Кранам | Crane outriggers |
| DE2903363B1 (en) * | 1979-01-29 | 1980-05-29 | Demag Ag Mannesmann | Support device for mobile cranes |
| DE3329564C1 (en) * | 1983-08-16 | 1984-11-29 | Walter 8700 Würzburg Hunger | Hydraulically raisable, mobile platform |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013143264A1 (en) * | 2012-03-29 | 2013-10-03 | 中联重科股份有限公司 | Engineering machinery and landing leg positioning and supporting device thereof |
| CN102849133A (en) * | 2012-09-27 | 2013-01-02 | 中联重科股份有限公司 | Hoisting equipment |
| CN102849133B (en) * | 2012-09-27 | 2016-04-06 | 中联重科股份有限公司 | Weight-lifting equipment |
| CN104389851A (en) * | 2014-11-20 | 2015-03-04 | 徐州徐工施维英机械有限公司 | Hydraulic limiting device and concrete pump truck |
| CN104389851B (en) * | 2014-11-20 | 2017-04-26 | 徐州徐工施维英机械有限公司 | Hydraulic limiting device and concrete pump truck |
| CN107500122A (en) * | 2017-08-25 | 2017-12-22 | 郑州新大方重工科技有限公司 | A kind of folding crane |
| CN107500122B (en) * | 2017-08-25 | 2019-09-10 | 郑州新大方重工科技有限公司 | A kind of folding crane |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013143264A1 (en) | 2013-10-03 |
| CN102602829B (en) | 2014-02-19 |
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