CN112279165B - Lower chord stiffening steel truss inspection vehicle lifting platform - Google Patents
Lower chord stiffening steel truss inspection vehicle lifting platform Download PDFInfo
- Publication number
- CN112279165B CN112279165B CN202011197151.2A CN202011197151A CN112279165B CN 112279165 B CN112279165 B CN 112279165B CN 202011197151 A CN202011197151 A CN 202011197151A CN 112279165 B CN112279165 B CN 112279165B
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- China
- Prior art keywords
- inspection vehicle
- gripper
- platform
- installation shaft
- steel truss
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a lifting platform of a lower chord stiffening steel truss inspection vehicle, which comprises a gripper platform, a lifting mechanism, a hanging basket and a base, wherein the base is movably arranged on the inspection vehicle, the lifting mechanism is used for driving the gripper platform to lift, the gripper platform comprises a connecting plate, a first installation shaft, a pair of gripper arms and a second installation shaft, the first installation shaft is horizontally arranged on the connecting plate, the second installation shaft is vertically arranged on the connecting plate, the pair of gripper arms is movably arranged on the first installation shaft and is respectively arranged at two sides of the second installation shaft, a second sliding sleeve is arranged on the second installation shaft, a magnet adsorption piece is arranged at the top of the second sliding sleeve, the second sliding sleeve is connected with the two gripper arms through connecting pieces, the gripper arms are arranged on the gripper arms, the gripper arms are arranged inwards, the gripper arms are positioned above the magnet adsorption piece, a hanging point is arranged on the connecting plate, and the hanging basket is hung on the hanging point. The invention realizes connection through the magnetic adsorption effect, has firm and reliable connection, good safety, double protection functions and small self weight of the lifting mechanism.
Description
Technical Field
The invention relates to bridge inspection equipment, in particular to a lifting platform of a lower chord stiffening steel truss inspection vehicle.
Background
Along with the improvement of materials and construction technology and the requirement of certain areas on the height limit of bridges, the application of the variable-section lower-chord stiffening steel truss girder is wider and wider. The stiffening part of the structure has complex structure and much interference, is not suitable for being inspected by an inspection vehicle for directly laying the track and needs to be inspected by a lifting platform. The existing steel truss girder lower chord inspection vehicle generally adopts a scissor mechanism or a mast lifting mechanism to inspect the internal structure of the steel truss girder, and the height of a stiffening part of the variable cross-section lower chord stiffening continuous steel truss girder exceeds the working limit of the scissor mechanism or the mast lifting mechanism.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a lifting platform of a lower chord stiffening steel truss girder inspection vehicle, which realizes connection through the magnetic adsorption effect, has firm and reliable connection and good safety, has double protection functions and has small self weight of a lifting mechanism.
In order to solve the technical problems, the invention adopts the following technical scheme:
a lifting platform of a lower chord stiffening steel truss inspection vehicle comprises a gripper platform, a lifting mechanism, a hanging basket and a base, wherein the base is movably arranged on the inspection vehicle, the lifting mechanism is used for driving the gripper platform to lift, the gripper platform comprises a connecting plate, a first installation shaft, a pair of gripper arms and a second installation shaft, the first installation shaft is horizontally arranged on the connecting plate, the second installation shaft is vertically arranged on the connecting plate, the pair of gripper arms is movably arranged on the first installation shaft and is respectively arranged at two sides of the second installation shaft, a second sliding sleeve is arranged on the second installation shaft, a magnet adsorption piece is arranged at the top of the second sliding sleeve, the second sliding sleeve is connected with the two gripper arms through a connecting piece, the gripper arms are provided with grippers which are arranged inwards, the grippers are positioned above the magnet adsorption piece, and the connecting plate is provided with a lifting point, the hanging basket is hung on the hanging point.
As a further improvement of the above technical solution, the magnet attracting member is an electromagnet.
As a further improvement of the technical scheme, the hand grip is provided with a friction pad.
As a further improvement of the above technical solution, the connecting member is a connecting rod, one end of the connecting rod is hinged to the first mounting shaft, and the other end of the connecting rod is hinged to the second sliding sleeve.
As a further improvement of the technical scheme, the grabbing arms are vertically arranged, and the grabbers are horizontally arranged.
As a further improvement of the technical scheme, a first sliding sleeve is arranged on the first installation shaft, and the grabbing arm is connected with the first sliding sleeve.
As a further improvement of the technical scheme, the lifting point is a lifting lug, and a steel wire rope for hanging the hanging basket is arranged on the lifting lug.
As a further improvement of the above technical solution, the lifting mechanism is a mast lift.
As a further improvement of the technical scheme, the base is provided with a limiting hook for positioning the base.
As a further improvement of the technical scheme, the base is provided with a traveling wheel.
Compared with the prior art, the invention has the advantages that:
(1) according to the lifting platform of the lower chord stiffening steel truss inspection vehicle, the gripper platform is connected with the bottom cross beam of the steel truss through the magnet adsorption effect, the connection structure is firm and reliable, the safety is good, and the gripper platform has a dual protection function. Due to the adsorption structure, the gripper platform is simple in structure, the lifting mechanism only lifts the gripper platform, the self weight is small, and the gripper platform is suitable for an inspection vehicle.
(2) The lifting platform of the lower chord stiffening steel truss inspection vehicle can lift in a larger height range by a mast-basket two-step lifting mode, the gripper platform plays a main bearing role in the lifting process of the basket, and the mast can be used as a guide rod to keep the lifting process of the basket stable.
Drawings
Fig. 1 is a schematic structural view of the elevating platform of the present invention.
Fig. 2 is a schematic view of the installation position of the elevating platform of the present invention.
Fig. 3 is a structural view illustrating an initial state of the gripper platform according to the present invention.
Fig. 4 is a schematic structural diagram of the hand grip retracting process of the hand grip platform in the invention.
Fig. 5 is a schematic view of the structure of the gripping platform after the gripping is fastened.
Fig. 6 is a schematic structural view of a lifting point of the gripper platform of the present invention.
The reference numerals in the figures denote:
1. a gripper platform; 11. a connecting plate; 12. a first mounting shaft; 13. a grasping arm; 14. a second mounting shaft; 15. a second sliding sleeve; 16. a gripper; 17. a friction pad; 18. a connecting rod; 19. a first sliding sleeve; 2. a lifting mechanism; 21. a mast; 3. a hanging basket; 31. a guide wheel; 4. a base; 41. a limiting hook; 42. a traveling wheel; 5. inspecting the vehicle; 6. a magnet adsorbing member; 61. an electromagnet; 7. lifting lugs; 71. a pin shaft; 8. a lower chord stiffening steel truss girder; 81. a bottom cross member; 82. contacting the flat plate; 9. a steel cord.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
As shown in fig. 1 to 6, the lifting platform of the lower chord stiffening steel truss inspection vehicle of the embodiment includes a gripper platform 1, a lifting mechanism 2, a hanging basket 3 and a base 4, the base 4 is movably disposed on the inspection vehicle 5, the gripper platform 1 includes a connecting plate 11, a first mounting shaft 12, a pair of gripper arms 13 and a second mounting shaft 14, the first mounting shaft 12 is horizontally mounted on the connecting plate 11, the second mounting shaft 14 is erected on the connecting plate 11, the pair of gripper arms 13 is movably mounted on the first mounting shaft 12 and respectively disposed at two sides of the second mounting shaft 14, a second sliding sleeve 15 is disposed on the second mounting shaft 14, a magnet adsorbing member 6 is disposed at the top of the second sliding sleeve 15, the second sliding sleeve 15 is connected with the two gripper arms 13 through a connecting member, the gripper arms 13 are provided with gripper arms 16, the gripper arms 16 of the two gripper arms 13 are disposed inward, the gripper arms 16 are disposed above the magnet adsorbing member 6, the connecting plate 11 is provided with a hanging point, the gondola 3 is suspended from a lifting point. The lifting mechanism 2 is used for lifting the gripper platform 1, specifically, the lifting mechanism 2 can act on the connecting plate 11, and the connecting plate 11 is used as an integral support for lifting the gripper platform 1.
The lifting platform is arranged on an inspection vehicle 5 of a lower chord stiffening steel truss girder 8, the base 4 is movably arranged on the inspection vehicle 5 and can move in the transverse bridge direction in the inspection vehicle 5, and when the inspection vehicle 5 needs to inspect the stiffening part of the lower chord stiffening steel truss girder 8, the lifting platform is used for inspection. When the lifting platform is used, the gripper platform 1 is firstly lifted to the bottom cross beam 81 of the bridge floor of the lower chord stiffening steel truss girder 8 through the lifting mechanism 2, then the magnet adsorption piece 6 at the top of the second mounting shaft 14 tightly adsorbs the bottom cross beam 81, the bottom cross beam 81 is provided with a contact flat plate 82 capable of adsorbing the magnet adsorption piece 6, the magnet adsorption piece 6 can drive the second sliding sleeve 15 to ascend when adsorbing the contact flat plate 82 upwards, the second sliding sleeve 15 ascends to pull the gripping arms 13 at two sides to draw close inwards through the connecting piece, the two grippers 16 are tightened inwards, clamped to the bottom cross beam 81 and tightly fastened on the contact flat plate 82 of the bottom cross beam 81, then the lifting mechanism 2 descends away from the gripper platform 1, and at the moment, the gripper platform 1 descends due to the absence of the support of the lifting mechanism 2, but the magnet adsorption piece 6 still adsorbs the bottom cross beam 81, so as to drive the grippers 16 of the gripping arms 13 to further contract, the gripper 16 will be pressed tightly against the contact plate 82 as shown in fig. 5, thereby achieving a tight connection of the gripper platform 1 with the bottom cross member 81. After the grippers 16 are fastened, due to the adsorption effect of the magnet adsorption piece 6, the two grippers 16 cannot be loosened and are firmly fastened on the contact flat plate 82, and even if the grippers 16 are damaged, the magnet adsorption piece 6 still can adsorb the bottom cross beam 81, so that the gripper platform 1 has a dual protection function and is firmly and reliably connected.
After the gripper platform 1 is fixed, the hanging basket 3 is lifted to a proper position through a lifting point on the gripper platform 1, and an operator checks the internal stiffening part of the lower chord stiffening steel truss girder 8 in the hanging basket 3. The magnet attraction member 6 which is brought into contact with the contact plate 82 after being raised is always positioned below the hand grip 16 so that the hand grip 16 can be snapped onto the contact plate 82 after being retracted. In the initial position, the distance between the two fingers 16 is greater than the length of the contact plate 82.
In this embodiment, two sets of gripper platforms 1 are provided, and as shown in fig. 6, the two sets of gripper platforms 1 share one connecting plate 11. Two groups of gripper platforms 1 are used for being connected with the bottom cross beam 81, two groups of lifting mechanisms 2 are arranged and act on two sides of the connecting plate 11, and the two gripper platforms 1 support a hanging basket 3.
In this embodiment, the magnet attracting member 6 is an electromagnet 61. After the power is on, the electromagnet 61 is electrified to generate adsorption, and the adsorption capacity disappears after the power is off. The electromagnet 61 has a large adsorption capacity, and even if the gripping action of the gripper 16 is not provided, the whole gripper platform 1 can be supported by the adsorption action of the electromagnet 61 and the bottom cross beam 81 alone. In this embodiment, it is preferable that a friction pad 17 is provided on the surface of the hand grip 16 contacting the contact plate 82, and the hand grip 16 is fastened to the contact plate 82 via the friction pad 17, so that the hand grip 16 is prevented from sliding off the contact plate 82 by increasing the friction force. After the gripper of the electromagnet 61 is fastened, even if the electromagnet 61 is powered off due to a reason, the friction force provided by the friction pad 17 on the gripper 16 can enable the gripper arm 13 to be in a tightened state, and the gripper 16 can still fasten the bottom cross beam 81, so that the dual protection function of the gripper platform 1 is further improved.
In this embodiment, the connecting member is a connecting rod 18, one end of the connecting rod 18 is hinged on the first mounting shaft 12, and the other end is hinged on the second sliding sleeve 15. When the electromagnet 61 adsorbs the bottom cross beam 81, the adsorption force drives the electromagnet 61 to ascend, so as to drive the second sliding sleeve 15 to ascend, and the second sliding sleeve 15 pulls the gripping arm 13 to approach the second installation shaft 14 through the connecting rod 18, so as to drive the two grippers 16 to tighten.
In this embodiment, the gripping arm 13 and the gripper 16 form an inverted L-shaped structure, the gripping arm 13 is vertically arranged, and the gripper 16 is horizontally arranged.
In this embodiment, the first mounting shaft 12 is provided with a first sliding sleeve 19, and the grasping arm 13 is slidably disposed on the first mounting shaft 12 through the first sliding sleeve 19. It should be noted that in other embodiments, the gripping arm 13 can be moved along the first mounting shaft 12 by means of a rail and a roller.
In this embodiment, the lifting points are two lifting lugs 7, the lifting lugs 7 are provided with a pin 71 in a lifting hole of the lifting lug 7, and a steel wire rope 9 is wound on the pin 71 and used for hanging the hanging basket 3. The lifting mechanism 2 is a mast lift. After the gripper platform 1 is lifted to the right position by the mast lifter, the hanging basket 3 is supported by the lifting lugs 7, the hanging basket 3 is lifted by the hanging basket lifter (not shown) retracting the steel wire rope 9, the mast 21 of the mast lifter is used as a hanging basket guide rail in the lifting process of the hanging basket 3, and the guide wheel 31 of the hanging basket 3 moves along the hanging basket guide rail, so that the hanging basket 3 is kept stable in lifting.
In this embodiment, the base 4 is provided with a traveling wheel 42. The base 4 is moved laterally inside the inspection vehicle 5 by means of road wheels 42, the road wheels 42 preferably being universal wheels. Be equipped with the spacing couple 41 that advances line location to base 4 on base 4, after base 4 adjusted suitable position, fix spacing couple 41 on base 4 on the automobile body of inspection car 5, carry on spacingly to base 4. It should be noted that in other embodiments, the base 4 may move in a rail manner.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a lower chord steel longeron inspection vehicle lift platform that puts more energy into which characterized in that: the lifting device comprises a gripper platform (1), a lifting mechanism (2), a hanging basket (3) and a base (4), wherein the base (4) is movably arranged on an inspection vehicle (5), the lifting mechanism (2) is used for driving the gripper platform (1) to lift, the gripper platform (1) comprises a connecting plate (11), a first installation shaft (12), a pair of gripper arms (13) and a second installation shaft (14), the first installation shaft (12) is horizontally arranged on the connecting plate (11), the second installation shaft (14) is vertically arranged on the connecting plate (11), the pair of gripper arms (13) are movably arranged on the first installation shaft (12) and are respectively arranged on two sides of the second installation shaft (14), a second sliding sleeve (15) is arranged on the second installation shaft (14), a magnet adsorption piece (6) is arranged at the top of the second sliding sleeve (15), and the second sliding sleeve (15) is connected with the two gripper arms (13) through a connecting piece, be equipped with tongs (16) on grabbing arm (13), tongs (16) of two grabbing arms (13) inwards set up, tongs (16) are located the top of magnet adsorption piece (6), be equipped with the hoisting point on connecting plate (11), hanging flower basket (3) hang in on the hoisting point.
2. The lower chord stiffening steel truss inspection vehicle lifting platform of claim 1, wherein: the magnet adsorption piece (6) is an electromagnet (61).
3. The lower chord stiffening steel truss inspection vehicle lifting platform of claim 1, wherein: the friction pad (17) is arranged on the handle (16).
4. The lower-chord stiffening steel truss inspection vehicle lifting platform as claimed in any one of claims 1 to 3, wherein: the connecting piece is a connecting rod (18), one end of the connecting rod (18) is hinged on the first mounting shaft (12), and the other end of the connecting rod (18) is hinged on the second sliding sleeve (15).
5. The lower-chord stiffening steel truss inspection vehicle lifting platform as claimed in any one of claims 1 to 3, wherein: the grabbing arm (13) is vertically arranged, and the grabbing hand (16) is horizontally arranged.
6. The lower-chord stiffening steel truss inspection vehicle lifting platform as claimed in any one of claims 1 to 3, wherein: the first mounting shaft (12) is provided with a first sliding sleeve (19), and the grabbing arm (13) is connected with the first sliding sleeve (19).
7. The lower-chord stiffening steel truss inspection vehicle lifting platform as claimed in any one of claims 1 to 3, wherein: the lifting point is a lifting lug (7), and a steel wire rope (9) for hanging the hanging basket (3) is arranged on the lifting lug (7).
8. The lower-chord stiffening steel truss inspection vehicle lifting platform as claimed in any one of claims 1 to 3, wherein: the lifting mechanism (2) is a mast lifter.
9. The lower-chord stiffening steel truss inspection vehicle lifting platform as claimed in any one of claims 1 to 3, wherein: and the base (4) is provided with a limiting hook (41) for positioning the base (4).
10. The lower-chord stiffening steel truss inspection vehicle lifting platform as claimed in any one of claims 1 to 3, wherein: and a travelling wheel (42) is arranged on the base (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197151.2A CN112279165B (en) | 2020-10-30 | 2020-10-30 | Lower chord stiffening steel truss inspection vehicle lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011197151.2A CN112279165B (en) | 2020-10-30 | 2020-10-30 | Lower chord stiffening steel truss inspection vehicle lifting platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112279165A CN112279165A (en) | 2021-01-29 |
| CN112279165B true CN112279165B (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011197151.2A Active CN112279165B (en) | 2020-10-30 | 2020-10-30 | Lower chord stiffening steel truss inspection vehicle lifting platform |
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| CN (1) | CN112279165B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204282207U (en) * | 2014-11-24 | 2015-04-22 | 武汉武桥交通装备技术有限公司 | The anti-sway Lifting basket device of a kind of column type wind resistance for bridge inspection vehicle |
| CN104894967B (en) * | 2015-06-29 | 2016-09-14 | 浙江峰邦机械科技有限公司 | A kind of bridge maintenance is from jacking equipment |
| CN205688343U (en) * | 2016-05-31 | 2016-11-16 | 北京市政建设集团有限责任公司 | A kind of steel truss girder tool car |
| CN206352259U (en) * | 2016-12-06 | 2017-07-25 | 湖南首创路桥装备制造有限公司 | Emergency brake latch mechanism on bridge inspection vehicle |
| CN207362692U (en) * | 2017-09-14 | 2018-05-15 | 中铁四局集团钢结构建筑有限公司 | A kind of heavy grade lower edge becomes the high steel truss beam inspection car in purlin |
| CN108103932A (en) * | 2017-12-22 | 2018-06-01 | 中铁第四勘察设计院集团有限公司 | It turns round closed type Flexible arch bridge with steel truss beam and checks vehicle |
| CN208310741U (en) * | 2018-05-15 | 2019-01-01 | 西安石油大学 | A kind of vertical purely mechanic drilling rod mud scraping device |
| CN210633690U (en) * | 2019-05-17 | 2020-05-29 | 太仓王纪自动化科技有限公司 | Lifting magnetic suction clamping device used on mechanical arm |
| CN111809519A (en) * | 2020-08-18 | 2020-10-23 | 为天(深圳)检测科技有限公司 | Bridge detects carrier loader and delivery platform system |
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2020
- 2020-10-30 CN CN202011197151.2A patent/CN112279165B/en active Active
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| CN112279165A (en) | 2021-01-29 |
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