CN109231022B - Height-adjustable gantry crane with four hydraulic cylinders and double landing legs without rails - Google Patents
Height-adjustable gantry crane with four hydraulic cylinders and double landing legs without rails Download PDFInfo
- Publication number
- CN109231022B CN109231022B CN201811416255.0A CN201811416255A CN109231022B CN 109231022 B CN109231022 B CN 109231022B CN 201811416255 A CN201811416255 A CN 201811416255A CN 109231022 B CN109231022 B CN 109231022B
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- landing leg
- leg
- stand column
- ground
- landing
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Classifications
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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
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
- B66C19/005—Straddle carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
The utility model provides a four pneumatic cylinders of trackless double-support leg height-adjustable gantry crane, includes girder, floor beam, travelling car, remote controller, an electric block and two landing legs, is equipped with two pneumatic cylinders in the both sides of landing leg, and two pneumatic cylinders are about landing leg symmetric distribution, and the stiff end and the floor beam fixed connection of pneumatic cylinder, the free end and the girder fixed connection of pneumatic cylinder; the landing leg comprises a stand column landing leg and an inner landing leg with adjustable height, the top of the inner landing leg is fixedly connected with the main beam, the bottom of the inner landing leg is arranged in the stand column landing leg and can move up and down relative to the stand column landing leg, and the bottom of the stand column landing leg is fixed on the ground beam; wheels for driving the ground beam to move are arranged at the bottom of the ground beam. The inner support leg can move up and down relative to the upright post support leg, and the expansion and the contraction of the support leg are controlled through the hydraulic cylinder, so that the height of the support leg is adjusted; the wheels driving the ground beam to move are arranged at the bottom of the ground beam, the gantry crane can walk freely, no track is required to be paved, and the flexibility is high.
Description
Technical Field
The invention relates to the technical field of portal cranes, in particular to a trackless double-support-leg four-hydraulic-cylinder height-adjustable portal crane.
Background
The existing portal crane has the characteristics of large operation range, wide application range, strong universality and the like, is mainly used for loading and unloading operations of outdoor goods yards, stock yards and bulk cargos, and generally comprises a main beam, wherein an operation trolley is arranged on the main beam, an electric hoist is arranged on the operation trolley, a supporting leg is arranged at the bottom of the main beam, a ground beam is arranged at the bottom of the supporting leg, when the portal crane is used, an operation rail of the portal crane needs to be paved on the using site, the ground beam is in sliding connection with the operation rail, the portal crane is large in tonnage, and for places with small hoisting tonnage, such as transporting cargos in a factory building, the portal crane with small tonnage is used, if the portal crane with small tonnage throws away the structure adopting the portal crane, the following defects exist: firstly, the height of the landing leg of the portal crane cannot be adjusted, and when the carried goods do not need to be lifted to a too high height, the extending length of the steel wire rope is longer and is unstable; secondly, the gantry crane needs to walk along the paved track, and the flexibility is poor.
Disclosure of Invention
The invention aims at: the utility model provides a four pneumatic cylinders of no track double-support leg can adjust high-low gantry crane, solves the technical problem that the height of the landing leg of gantry crane can not be adjusted and gantry crane needs to walk along the track of laying, and the flexibility is relatively poor.
The technical scheme adopted by the invention is as follows:
the utility model provides a four pneumatic cylinders of trackless double-support leg height-adjustable gantry crane, includes girder, floor beam, travelling car, remote controller, an electric block and two landing legs, is equipped with two pneumatic cylinders in the both sides of landing leg, and two pneumatic cylinders are about landing leg symmetric distribution, and the stiff end and the floor beam fixed connection of pneumatic cylinder, the free end and the girder fixed connection of pneumatic cylinder; the landing leg comprises a stand column landing leg and an inner landing leg with adjustable height, the top of the inner landing leg is fixedly connected with the main beam, the bottom of the inner landing leg is arranged in the stand column landing leg and can move up and down relative to the stand column landing leg, and the bottom of the stand column landing leg is fixed on the ground beam; wheels for driving the ground beams to move are arranged at the bottoms of the ground beams, each ground beam corresponds to two wheels, a connecting rod is arranged between the two wheels, the two wheels are respectively connected with the connecting rod in a rotating mode, a steering pressure bearing is arranged between the connecting rod and the ground beams, and the connecting rod is connected with the ground beams through the steering pressure bearing.
The upright post support legs are uniformly provided with first pin shaft holes at intervals, the inner support legs are provided with second pin shaft holes corresponding to the first pin shaft holes, and pin shafts are arranged in the first pin shaft holes and the second pin shaft holes which are matched with each other.
A vertical rod is arranged in the middle of the connecting rod, a disc is fixed on the upper part of the vertical rod, a first annular groove is arranged at the top of the disc, and the bottom of the steering pressure bearing is arranged in the first annular groove; the bottom of the ground beam is provided with a second annular groove, and the top of the steering pressure bearing is arranged in the second annular groove.
Be equipped with supplementary movable landing leg on the girder, supplementary movable landing leg one end is articulated with the girder, is equipped with vertical screw pole at the other end of supplementary movable landing leg, screw pole and supplementary movable landing leg threaded connection are equipped with the crank at the top of screw pole.
The landing leg is vertical setting between girder and floor beam, and the pneumatic cylinder is parallel with the landing leg.
The hydraulic cylinders on two sides of the supporting leg are symmetrically distributed relative to the main beam.
Two support rods which are obliquely arranged are arranged on the side faces of the stand column support legs, the two support rods are symmetrically distributed about the stand column support legs, one end of each support rod is fixedly connected with the ground beam, and the other end of each support rod is fixedly connected with the stand column support leg.
The connecting rod is fixedly connected with a steering rod for pulling the crane.
The landing leg comprises the upright post landing leg and the inner landing leg with adjustable height, wherein the inner landing leg can move up and down relative to the upright post landing leg, each landing leg corresponds to two hydraulic cylinders, and the telescopic movement of the landing leg is controlled by the hydraulic cylinders, so that the height of the landing leg is adjusted; wheels for driving the ground beam to move are arranged at the bottom of the ground beam, the gantry crane can freely walk, no additional track is needed, and the flexibility is high; the wheels are connected with the ground beam through a steering pressure bearing, so that steering is facilitated; the auxiliary movable supporting leg is used for controlling the position of a screw rod, the screw rod is used for supporting the gantry crane when the gantry crane stops walking and lifting the goods, and the pressure of wheels is reduced; the steering rod is used for a worker to pull the gantry crane, so that the movement direction of the gantry crane can be controlled conveniently; the support rod supports the stand column support leg, so that the firmness and stability of the stand column support leg are improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a left side view of fig. 1.
Detailed Description
As shown in fig. 1 and 2, a trolley-free double-support-leg four-hydraulic-cylinder adjustable-height portal crane comprises a main beam 11, a ground beam 3, a running trolley 9, a remote controller 6, an electric hoist 8 and two support legs, wherein the running trolley 9 is arranged on the main beam 11, the electric hoist 8 is arranged on the running trolley 9, a steel wire rope is wound on the electric hoist, a lifting hook 10 is arranged at the free end of the steel wire rope, the support legs are arranged at the bottom of the main beam 11, the ground beams 3 are arranged at the bottoms of the support legs, each ground beam 3 corresponds to one support leg, the prior art is omitted, two hydraulic cylinders 5 are symmetrically distributed on two sides of each support leg, the telescopic stability is improved, the stress balance of the hydraulic cylinders 5 is ensured, the fixed ends of the hydraulic cylinders 5 are fixedly connected with the ground beam 3, and the free ends of the hydraulic cylinders 5 are fixedly connected with the main beam 11; the landing leg comprises a stand column landing leg 4 and an inner landing leg 7 with adjustable height, the top of the inner landing leg 7 is fixedly connected with a main beam 11, the bottom of the inner landing leg 7 is arranged in the stand column landing leg 4 and can move up and down relative to the stand column landing leg 4, the structure is more, in the embodiment, a slide rail is arranged in the stand column landing leg 4, the inner landing leg 7 slides along the slide rail, and the bottom of the stand column landing leg 4 is fixed on the ground beam 3; wheels 1 driving the ground beams 3 to move are arranged at the bottoms of the ground beams 3, each ground beam 3 corresponds to two wheels 1, a connecting rod 100 is arranged between the two wheels 1, the two wheels 1 are respectively connected with the connecting rod 100 in a rotating mode, a steering pressure bearing 2 is arranged between the connecting rod 100 and the ground beams 3, and the connecting rod 100 is connected with the ground beams 3 through the steering pressure bearing 2.
The upright post supporting legs 4 are uniformly provided with first pin holes 18 at intervals, the inner supporting legs 7 are provided with second pin holes 19 corresponding to the first pin holes 18, pins are arranged in the first pin holes 18 and the second pin holes 19 which are matched with each other, and the pins are inserted when the first pin holes 18 and the second pin holes 19 are aligned, so that the positioning effect is achieved.
A vertical rod 101 is arranged in the middle of the connecting rod 100, a disc 102 is fixed on the upper part of the vertical rod 101, a first annular groove is arranged at the top of the disc 102, and the bottom of the steering pressure bearing 2 is arranged in the first annular groove; a second annular groove is arranged at the bottom of the ground beam 3, and the top of the steering pressure bearing 2 is arranged in the second annular groove.
The steering pressure bearing 2 is respectively in threaded fit with the first annular groove and the second annular groove.
Be equipped with supplementary movable leg 13 on the floor beam 3, supplementary movable leg 13 one end is articulated with the floor beam 3, be equipped with vertical screw pole 15 at the other end of supplementary movable leg 13, screw pole 15 and supplementary movable leg 13 threaded connection are equipped with crank 14 at the top of screw pole 15, and crank 14 is used for controlling the height of screw pole 15, and supplementary movable leg 13 is used for controlling the position of screw pole 15, and screw pole 15 is used for stopping walking at gantry crane, supports it when lifting by crane goods, reduces the pressure of wheel 1.
The landing leg is vertically arranged between the main beam 11 and the ground beam 3, and the hydraulic cylinder 5 is parallel to the landing leg.
The hydraulic cylinders 5 on both sides of the leg are symmetrically distributed about the main beam 11.
The side of stand landing leg 4 is equipped with the bracing piece 12 that two slopes set up, and two bracing pieces 12 are about stand landing leg 4 symmetric distribution, and the one end and the floor beam 3 fixed connection of bracing piece 12, the other end and the stand landing leg 4 fixed connection of bracing piece 12, bracing piece 12 support stand landing leg 4, increase its fastness and stability.
The steering rod 17 for pulling the crane is fixedly connected to the connecting rod 100, and the steering rod 17 is used for a worker to pull the gantry crane, so that the movement direction of the gantry crane can be conveniently controlled.
The landing leg comprises upright post landing legs 4 and inner landing legs 7 with adjustable heights, wherein the inner landing legs 7 can move up and down relative to the upright post landing legs 4, each landing leg corresponds to two hydraulic cylinders 5, and the expansion and the contraction of the landing legs are controlled through the hydraulic cylinders 5, so that the height adjustment of the landing legs is realized; the wheels 1 driving the ground beam 3 to move are arranged at the bottom of the ground beam 3, the gantry crane can walk freely, no track is required to be paved, and the flexibility is high. When the crane is used, an operator holds the steering rod 17 and pulls the gantry crane to a destination, then the remote controller 6 is used for controlling the operation trolley 9 and the electric hoist 8 to work, so as to finish hoisting goods, and then holds the steering rod 17 and pulls the gantry crane to a transport destination; when the lifted goods do not need to be lifted to a higher height, the pins in the first pin shaft hole 18 and the second pin shaft hole 19 are disassembled, the remote controller 6 is used for controlling the hydraulic cylinder 5 to retract to a proper height, the position of the main beam 11 is reduced to the proper height, then the pins are inserted into the first pin shaft hole 18 and the second pin shaft hole 19 which are matched with each other, so that the overall height of the gantry crane is reduced, the extension length of a steel wire rope is reduced, the shaking of the steel wire rope is reduced, the lifting stability is improved, and when the lifted goods need to be lifted to the higher height, the height of the main beam 11 is adjusted through the hydraulic cylinder 5 until the proper position is reached; when it is desired to change the direction of the gantry crane, one operator holds one leg and the other operator holds the steering column 17, turning the gantry crane around that remaining stationary leg, thus changing the direction.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (4)
1. The utility model provides a four pneumatic cylinders of trackless double-support leg adjustable height gantry crane, includes girder, floor beam, operation dolly, remote controller, an electric block and two landing legs, its characterized in that: two hydraulic cylinders are arranged on two sides of the supporting leg, the two hydraulic cylinders are symmetrically distributed about the supporting leg, the fixed end of each hydraulic cylinder is fixedly connected with the ground beam, and the free end of each hydraulic cylinder is fixedly connected with the main beam; the landing leg comprises a stand column landing leg and an inner landing leg with adjustable height, the top of the inner landing leg is fixedly connected with the main beam, the bottom of the inner landing leg is arranged in the stand column landing leg and can move up and down relative to the stand column landing leg, and the bottom of the stand column landing leg is fixed on the ground beam; wheels for driving the ground beams to move are arranged at the bottoms of the ground beams, each ground beam corresponds to two wheels, a connecting rod is arranged between the two wheels, the two wheels are respectively and rotatably connected with the connecting rod, a steering pressure bearing is arranged between the connecting rod and the ground beams, and the connecting rod is connected with the ground beams through the steering pressure bearing;
the upright post support legs are uniformly provided with first pin shaft holes at intervals, the inner support legs are provided with second pin shaft holes corresponding to the first pin shaft holes, and pin shafts are arranged in the first pin shaft holes and the second pin shaft holes which are matched with each other;
the landing leg is vertically arranged between the main beam and the ground beam, and the hydraulic cylinder is parallel to the landing leg;
the hydraulic cylinders on two sides of the supporting leg are symmetrically distributed about the main beam;
two support rods which are obliquely arranged are arranged on the side faces of the stand column support legs, the two support rods are symmetrically distributed about the stand column support legs, one end of each support rod is fixedly connected with the ground beam, and the other end of each support rod is fixedly connected with the stand column support leg.
2. The trackless double-leg four-hydraulic-cylinder adjustable-height portal crane of claim 1, wherein: a vertical rod is arranged in the middle of the connecting rod, a disc is fixed on the upper part of the vertical rod, a first annular groove is arranged at the top of the disc, and the bottom of the steering pressure bearing is arranged in the first annular groove; the bottom of the ground beam is provided with a second annular groove, and the top of the steering pressure bearing is arranged in the second annular groove.
3. The trackless double-leg four-hydraulic-cylinder adjustable-height portal crane of claim 2, wherein: be equipped with supplementary movable landing leg on the girder, supplementary movable landing leg one end is articulated with the girder, is equipped with vertical screw pole at the other end of supplementary movable landing leg, screw pole and supplementary movable landing leg threaded connection are equipped with the crank at the top of screw pole.
4. A non-rail double-leg four-hydraulic cylinder adjustable height portal crane as claimed in any one of claims 2-3, wherein: the connecting rod is fixedly connected with a steering rod for pulling the crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416255.0A CN109231022B (en) | 2018-11-26 | 2018-11-26 | Height-adjustable gantry crane with four hydraulic cylinders and double landing legs without rails |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811416255.0A CN109231022B (en) | 2018-11-26 | 2018-11-26 | Height-adjustable gantry crane with four hydraulic cylinders and double landing legs without rails |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109231022A CN109231022A (en) | 2019-01-18 |
| CN109231022B true CN109231022B (en) | 2023-08-18 |
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ID=65074108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811416255.0A Active CN109231022B (en) | 2018-11-26 | 2018-11-26 | Height-adjustable gantry crane with four hydraulic cylinders and double landing legs without rails |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109231022B (en) |
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| CN111170149B (en) * | 2020-02-25 | 2021-10-22 | 万玉林 | Cable crane for hydraulic engineering construction |
| CN112723182B (en) * | 2021-01-12 | 2022-09-09 | 中铁十四局集团第一工程发展有限公司 | Hoisting equipment capable of walking in transverse rail transfer mode |
| CN113152474B (en) * | 2021-04-28 | 2024-09-06 | 山河智能装备股份有限公司 | Crawler walking leg mechanism adopting double-leg structure |
| CN114014168B (en) * | 2021-11-22 | 2024-01-16 | 江苏博鸿起重机械有限公司 | Portal crane |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH082874A (en) * | 1994-06-21 | 1996-01-09 | Ishikawajima Harima Heavy Ind Co Ltd | Transport device |
| JPH08245170A (en) * | 1995-03-10 | 1996-09-24 | Toshiba Eng & Constr Co Ltd | Carrying-in and setting installer of equipment |
| CN102092634A (en) * | 2011-03-31 | 2011-06-15 | 中国人民解放军军事交通学院 | Variable wheel tread universal wheel type crane for electrical control doors |
| CN102530734A (en) * | 2012-02-07 | 2012-07-04 | 张崇志 | Movable portal crane |
| CN102627225A (en) * | 2012-03-20 | 2012-08-08 | 无锡国电华新起重运输设备有限公司 | Bridge of bridge crane |
| CN202643148U (en) * | 2012-03-26 | 2013-01-02 | 中国有色金属工业第十四冶金建设公司 | Spiral crane with cantilever capable of horizontally hovering and positioning |
| CN105174070A (en) * | 2015-10-20 | 2015-12-23 | 广东南桂起重机械有限公司 | Special crane provided with hoisting trolleys and used for aluminum sectional material |
| CN106395616A (en) * | 2016-02-24 | 2017-02-15 | 王松涛 | Trackless intelligent gantry crane |
| CN107352421A (en) * | 2016-05-09 | 2017-11-17 | 卢统华 | A kind of semi portal bridge-type cantilever crane with running trolley and balance beam |
-
2018
- 2018-11-26 CN CN201811416255.0A patent/CN109231022B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH082874A (en) * | 1994-06-21 | 1996-01-09 | Ishikawajima Harima Heavy Ind Co Ltd | Transport device |
| JPH08245170A (en) * | 1995-03-10 | 1996-09-24 | Toshiba Eng & Constr Co Ltd | Carrying-in and setting installer of equipment |
| CN102092634A (en) * | 2011-03-31 | 2011-06-15 | 中国人民解放军军事交通学院 | Variable wheel tread universal wheel type crane for electrical control doors |
| CN102530734A (en) * | 2012-02-07 | 2012-07-04 | 张崇志 | Movable portal crane |
| CN102627225A (en) * | 2012-03-20 | 2012-08-08 | 无锡国电华新起重运输设备有限公司 | Bridge of bridge crane |
| CN202643148U (en) * | 2012-03-26 | 2013-01-02 | 中国有色金属工业第十四冶金建设公司 | Spiral crane with cantilever capable of horizontally hovering and positioning |
| CN105174070A (en) * | 2015-10-20 | 2015-12-23 | 广东南桂起重机械有限公司 | Special crane provided with hoisting trolleys and used for aluminum sectional material |
| CN106395616A (en) * | 2016-02-24 | 2017-02-15 | 王松涛 | Trackless intelligent gantry crane |
| CN107352421A (en) * | 2016-05-09 | 2017-11-17 | 卢统华 | A kind of semi portal bridge-type cantilever crane with running trolley and balance beam |
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| Publication number | Publication date |
|---|---|
| CN109231022A (en) | 2019-01-18 |
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