CN102874696A - Two-stage synchronous extensible landing leg - Google Patents
Two-stage synchronous extensible landing leg Download PDFInfo
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- CN102874696A CN102874696A CN201210370163XA CN201210370163A CN102874696A CN 102874696 A CN102874696 A CN 102874696A CN 201210370163X A CN201210370163X A CN 201210370163XA CN 201210370163 A CN201210370163 A CN 201210370163A CN 102874696 A CN102874696 A CN 102874696A
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- leg
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- fixed
- convenient table
- retractive leg
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Abstract
A two-stage synchronous extensible landing leg comprises a horizontal landing leg, a horizontal extension driving device and a vertical landing leg. The horizontal landing leg comprises a fixed leg, a first extensible leg and a second extensible leg, the horizontal extension driving device comprises a horizontal oil cylinder, an extending rope and a retraction rope, the vertical landing leg comprises a vertical fixed leg, a vertical moving leg and a vertical oil cylinder, the vertical fixed leg is fixedly connected with an outer end of the second extensible leg, the vertical moving leg is sleeved in the vertical fixed leg, a cylinder barrel of the vertical oil cylinder is hinged with an upper end portion of the vertical fixed leg, and a piston rod of the vertical oil cylinder is fixed together with a lower end of the vertical moving leg. The horizontal extension driving mechanism formed by the double-acting hydraulic oil cylinder and a steel wire is adopted, so that quick and synchronous extension of the two-stage landing leg can be realized, extension is quick, and two sections of the extensible leg can be reliably fixed at any position according to supporting needs. The two-stage synchronous extensible landing leg is simple in structure, wide in horizontal extension range, capable of synchronously extending and high in reliability.
Description
Technical field
The present invention relates to a kind of supporting leg, especially a kind of two-stage synchronization telescope supporting leg that is applicable to various construction machinery and equipments.
Background technology
Supporting leg is the device that ensures band arm support construction machinery and equipment (such as aerial platform, concrete pump truck, lorry-mounted crane, Elevating platform fire truck etc.) job safety.Along with the increase of jib length, for guaranteeing job safety, then require supporting leg to have larger anti-tipping ability.At present, supporting leg generally adopts single-stage horizontal reach structure, and its horizontal span is little, has been not suitable with the operational security requirement of large-scale arm support type engineering machinery.
Summary of the invention
Technical matters: the objective of the invention is to overcome the weak point in the prior art, provide a kind of simple in structure, the horizontal extension scope is large, but synchronization telescope, the two-stage synchronization telescope supporting leg that reliability is high.
Technical scheme: two-stage synchronization telescope supporting leg of the present invention comprises an end and the horizontal support legs that is fixed together of vehicle frame that is supported machinery, is located at horizontal extension actuating device in the horizontal support legs, is connected to the vertical leg of the horizontal support legs other end; Described horizontal support legs comprises Convenient table, the first Retractive leg, the second Retractive leg; The first Retractive leg is sleeved in the Convenient table, and the two ends, bottom of the first Retractive leg are fixed with respectively II slide block and IV slide block, and the inner top cunning of the first Retractive leg is equipped with I and props up pulley, and the inner bottom cunning of the first Retractive leg is equipped with interior sheave; The second Retractive leg is sleeved in the first Retractive leg, and the two ends, bottom of the second Retractive leg are fixed with respectively I slide block and III slide block, and the inner top cunning of the second Retractive leg is equipped with II and props up pulley, and the inner bottom of the second Retractive leg is fixed with solid rope bearing;
Described horizontal extension actuating device comprises cross cylinder, overhanging rope, retraction rope; The piston rod of cross cylinder is fixed with bearing, bearing is hinged and connected by II bearing pin and Convenient table, the bottom, outer end of Convenient table is fixed with solid rope support, the cylinder barrel of cross cylinder is hinged on the first Retractive leg by the I bearing pin, the cylinder barrel afterbody of cross cylinder is fixed on the cylinder tail support that is comprised of two bent plates, slidingly on the cylinder tail support outer sheave is housed and III is propped up pulley; One end of overhanging rope is fixed on the bearing, and the other end is fixed on the solid rope bearing after walking around outer sheave; One end of retraction rope is fixed on the solid rope bearing, and the other end is fixed on the solid rope support after walking around interior sheave;
Described vertical leg comprises vertical Convenient table, vertical movable leg and Vertical Cylinders, wherein the outer end of vertical Convenient table and the second Retractive leg is fixedly linked, vertical movable leg is sleeved within the vertical Convenient table, the cylinder barrel of Vertical Cylinders is hinged and connected with the upper end of vertical Convenient table, and the piston rod of Vertical Cylinders is fixed together with the lower end of vertical movable leg.
It is polygonal box type construction that described Convenient table, the first Retractive leg and the second Retractive leg are the cross section;
The fixing solid rope support in the bottom, outer end of described Convenient table is L-shaped, and Convenient table each side is processed with a circular port Gu Shengjiachu's; Described cross cylinder and Vertical Cylinders are single pole two-way ram cylinder.
Beneficial effect: the present invention adopts two joint Retractive legs, and the support zone of machinery is obviously increased, and adding each supporting leg, all to adopt the cross section be polygonal box type construction, and rigidity is large, is out of shape littlely, can greatly improve the safety performance of large-scale Work machine; The horizontal extension driver train that adopts double-act-ing hydraulic J-Horner and steel rope to form can realize that the Fast synchronization of two-stage supporting leg is flexible, and expanding-contracting action is fast, and two joint Retractive legs can reliably be fixed on the optional position according to the supporting needs; Adopt the little slide block of friction drag and a pulley, make the flexible alerting ability of supporting leg good, friction durability is long.It is simple in structure, and the horizontal extension scope is large, but synchronization telescope, and reliability is high, has widely practicality.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: the 1-Convenient table; The 2-bearing; The 3-I is propped up pulley; 4-the first Retractive leg; The 5-II is propped up pulley; 6-the second Retractive leg; The 7-cross cylinder; The overhanging rope of 8-; The outer sheave of 9-; The vertical Convenient table of 10-; The vertical movable leg of 11-; The 12-Vertical Cylinders; 13-I slide block; 14-II slide block; The 15-III is propped up pulley; The solid rope support of 16-; 17-cylinder tail support; The 18-rope that bounces back; 19-III slide block; The 20-bearing of admittedly restricting; 21-IV slide block; 22-I bearing pin; Sheave in the 23-; 24-II bearing pin.
The specific embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
As shown in Figure 1, two-stage synchronization telescope supporting leg of the present invention comprises horizontal support legs, horizontal extension actuating device, vertical leg etc.Horizontal support legs comprises Convenient table 1, the first Retractive leg 4, the second Retractive leg 6 and each pulley and slide block etc., and it is polygonal box type construction that Convenient table 1, the first Retractive leg 4 and the second Retractive leg 6 are the cross section; Wherein Convenient table 1 is fixed together with the vehicle frame that is supported machinery, and the first Retractive leg 4 places in the Convenient table 1, and two ends, its underpart are fixed with respectively II slide block 14 and IV slide block 21, and its inner top cunning is equipped with I and props up pulley 3, and its inner bottom cunning is equipped with interior sheave 23; The second Retractive leg 6 places in the first Retractive leg 4, and two ends, its underpart are fixed with respectively I slide block 13 and III slide block 19, and its inner top cunning is equipped with II and props up pulley 5, and its inner bottom is fixed with solid rope bearing 20; The bottom, outer end of Convenient table 1 is fixed with L-shaped solid rope support 16, and each side is processed with a circular port at this place.
Described horizontal extension actuating device comprises cross cylinder 7, overhanging rope 8, retraction rope 18 and each sheave etc., cross cylinder 7 is single pole two-way ram cylinder, its piston rod is fixed with bearing 2, and be hinged and connected by II bearing pin 24 and Convenient table 1, cylinder barrel is hinged on the first Retractive leg 4 by I bearing pin 22, the cylinder barrel afterbody is fixed on the cylinder tail support 17 that is comprised of two bent plates, and outer sheave 9 is housed and III is propped up pulley 15 in that cylinder tail support 17 is sliding; One end of overhanging rope 8 is fixed on the bearing 2, and the other end is fixed on the solid rope bearing 20 after walking around outer sheave 9; One end of retraction rope 18 is fixed on the solid rope bearing 20, and the other end is fixed on the solid rope support 16 after walking around interior sheave 23.
Described vertical leg comprises vertical Convenient table 10, vertical movable leg 11 and Vertical Cylinders 12, wherein the outer end of vertical Convenient table 10 and the second Retractive leg 6 is fixedly linked, vertical movable leg 11 places within the vertical Convenient table 10, Vertical Cylinders 12 is single pole two-way ram cylinder, its cylinder barrel is hinged and connected with the upper end of vertical Convenient table 10, and its piston rod is fixed together with the lower end of vertical movable leg 11.
Principle of work is as follows:
When the large chamber of cross cylinder 7 entered pressure oil, it is protruding that cylinder barrel drives the first Retractive leg 4 by I bearing pin 22, and 8 in overhanging rope is protruding by the 20 pulling 6 liang of steps of the second Retractive leg of bearing of admittedly restricting.
When the loculus of cross cylinder 7 entered pressure oil, cylinder barrel drove the first Retractive leg 4 by I bearing pin 22 and inwardly bounces back, and 18 in retraction rope spurs the second Retractive leg 6 by the bearing 20 of admittedly restricting and inwardly bounces back.
When the large chamber of Vertical Cylinders 11 entered pressure oil, vertical movable leg 11 was stretched out downwards, and when the loculus of straight oil cylinder 11 entered pressure oil, vertical movable leg 11 is retraction upwards.
Claims (4)
1. two-stage synchronization telescope supporting leg is characterized in that: it comprises horizontal support legs that an end and the vehicle frame that is supported machinery be fixed together, be located at horizontal extension actuating device in the horizontal support legs, be connected to the vertical leg of the horizontal support legs other end; Described horizontal support legs comprises Convenient table (1), the first Retractive leg (4), the second Retractive leg (6); The first Retractive leg (4) is sleeved in the Convenient table (1), the two ends, bottom of the first Retractive leg (4) are fixed with respectively II slide block (14) and IV slide block (21), the inner top cunning of the first Retractive leg (4) is equipped with I and props up pulley (3), and the inner bottom cunning of the first Retractive leg (4) is equipped with interior sheave (23); The second Retractive leg (6) is sleeved in the first Retractive leg (4), the two ends, bottom of the second Retractive leg (6) are fixed with respectively I slide block (13) and III slide block (19), the inner top cunning of the second Retractive leg (6) is equipped with II and props up pulley (5), and the inner bottom of the second Retractive leg (6) is fixed with solid rope bearing (20);
Described horizontal extension actuating device comprises cross cylinder (7), overhanging rope (8), retraction rope (18); The piston rod of cross cylinder (7) is fixed with bearing (2), bearing (2) is hinged and connected by II bearing pin (24) and Convenient table (1), the bottom, outer end of Convenient table (1) is fixed with solid rope support (16), the cylinder barrel of cross cylinder (7) is hinged on the first Retractive leg (4) by I bearing pin (22), the cylinder barrel afterbody of cross cylinder (7) is fixed on the cylinder tail support (17) that is comprised of two bent plates, and outer sheave (9) is housed the upper cunning of cylinder tail support (17) and III is propped up pulley (15); One end of overhanging rope (8) is fixed on the bearing (2), and the other end is walked around outer sheave (9) and is fixed on afterwards on the solid rope bearing (20); One end of retraction rope (18) is fixed on the solid rope bearing (20), and the other end is walked around interior sheave (23) and is fixed on afterwards on the solid rope support (16);
Described vertical leg comprises vertical Convenient table (10), vertical movable leg (11) and Vertical Cylinders (12), wherein vertical Convenient table (10) is fixedly linked with the outer end of the second Retractive leg (6), vertical movable leg (11) is sleeved within the vertical Convenient table (10), the cylinder barrel of Vertical Cylinders (12) is hinged and connected with the upper end of vertical Convenient table (10), and the piston rod of Vertical Cylinders (12) is fixed together with the lower end of vertical movable leg (11).
2. two-stage synchronization telescope supporting leg according to claim 1, it is characterized in that: it is polygonal box type construction that described Convenient table (1), the first Retractive leg (4) and the second Retractive leg (6) are the cross section.
3. two-stage synchronization telescope supporting leg according to claim 1 is characterized in that: the fixing solid rope support (16) in described Convenient table (1) bottom, outer end is L-shaped, and Convenient table (1) each side is processed with a circular port what solid rope support (16) was located.
4. two-stage synchronization telescope supporting leg according to claim 1, it is characterized in that: described cross cylinder (7), Vertical Cylinders (12) are single pole two-way ram cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210370163XA CN102874696A (en) | 2012-09-27 | 2012-09-27 | Two-stage synchronous extensible landing leg |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210370163XA CN102874696A (en) | 2012-09-27 | 2012-09-27 | Two-stage synchronous extensible landing leg |
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| Publication Number | Publication Date |
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| CN102874696A true CN102874696A (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210370163XA Pending CN102874696A (en) | 2012-09-27 | 2012-09-27 | Two-stage synchronous extensible landing leg |
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| CN (1) | CN102874696A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935903A (en) * | 2014-04-17 | 2014-07-23 | 中国矿业大学 | Lifting device of material taking machine of mine car |
| KR101831315B1 (en) | 2016-11-07 | 2018-02-22 | 주식회사 에버다임 | a out-trigger |
| CN108298445A (en) * | 2017-12-12 | 2018-07-20 | 湖南百特随车起重机有限公司 | A kind of two-stage stretching formula leg system |
| CN110054098A (en) * | 2019-05-14 | 2019-07-26 | 姚运文 | Crane draws telescopic large span supporting leg |
| CN110655015A (en) * | 2019-10-12 | 2020-01-07 | 中国水利水电第七工程局有限公司 | Trackless self-propelled platform car for subway tunnel maintenance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3933218A (en) * | 1973-10-11 | 1976-01-20 | Ab Bofors | Container handling truck |
| US4142710A (en) * | 1976-12-01 | 1979-03-06 | Tadano Ltd. | Automatic extension control system for jacking device |
| CN201220896Y (en) * | 2008-03-11 | 2009-04-15 | 徐州徐工随车起重机有限公司 | Two-stage telescoping built-in oil conduit supporting leg |
| CN201980904U (en) * | 2010-12-21 | 2011-09-21 | 徐州重型机械有限公司 | Horizontal landing leg of crane and crane provided with same |
| CN102442617A (en) * | 2010-10-15 | 2012-05-09 | 北京京城重工机械有限责任公司 | Two-stage extending landing leg mechanism |
| CN202390122U (en) * | 2011-12-07 | 2012-08-22 | 愚公机械股份有限公司 | Horizontal supporting leg for portable push-pull crane |
-
2012
- 2012-09-27 CN CN201210370163XA patent/CN102874696A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3933218A (en) * | 1973-10-11 | 1976-01-20 | Ab Bofors | Container handling truck |
| US4142710A (en) * | 1976-12-01 | 1979-03-06 | Tadano Ltd. | Automatic extension control system for jacking device |
| CN201220896Y (en) * | 2008-03-11 | 2009-04-15 | 徐州徐工随车起重机有限公司 | Two-stage telescoping built-in oil conduit supporting leg |
| CN102442617A (en) * | 2010-10-15 | 2012-05-09 | 北京京城重工机械有限责任公司 | Two-stage extending landing leg mechanism |
| CN201980904U (en) * | 2010-12-21 | 2011-09-21 | 徐州重型机械有限公司 | Horizontal landing leg of crane and crane provided with same |
| CN202390122U (en) * | 2011-12-07 | 2012-08-22 | 愚公机械股份有限公司 | Horizontal supporting leg for portable push-pull crane |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103935903A (en) * | 2014-04-17 | 2014-07-23 | 中国矿业大学 | Lifting device of material taking machine of mine car |
| CN103935903B (en) * | 2014-04-17 | 2017-01-11 | 中国矿业大学 | Lifting device of material taking machine of mine car |
| KR101831315B1 (en) | 2016-11-07 | 2018-02-22 | 주식회사 에버다임 | a out-trigger |
| CN108298445A (en) * | 2017-12-12 | 2018-07-20 | 湖南百特随车起重机有限公司 | A kind of two-stage stretching formula leg system |
| CN110054098A (en) * | 2019-05-14 | 2019-07-26 | 姚运文 | Crane draws telescopic large span supporting leg |
| CN110655015A (en) * | 2019-10-12 | 2020-01-07 | 中国水利水电第七工程局有限公司 | Trackless self-propelled platform car for subway tunnel maintenance |
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| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: XUZHOU WOTU INVESTMENT MANAGEMENT CONSULTING CO., Free format text: FORMER OWNER: XUZHOU TIAND HEAVY-DUTY MACHINERY MANUFACTURING CO., LTD. Effective date: 20140313 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 221116 XUZHOU, JIANGSU PROVINCE TO: 221000 XUZHOU, JIANGSU PROVINCE |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20140313 Address after: 221000, Zhongshan North Road, Jiangsu, Xuzhou No. 8 to the international 1 -2-2204 Applicant after: Xuzhou fertile land investment management consulting Co., Ltd. Address before: 221116 No. 24, Mount Huangshan Road, Copper Mt. New District, Jiangsu, Xuzhou Applicant before: Xuzhou Tiand Heavy-Duty Machinery Manufacturing Co., Ltd. |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20130116 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |