CN212863900U - Landing leg small side door type portal crane - Google Patents
Landing leg small side door type portal crane Download PDFInfo
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- CN212863900U CN212863900U CN202021631902.2U CN202021631902U CN212863900U CN 212863900 U CN212863900 U CN 212863900U CN 202021631902 U CN202021631902 U CN 202021631902U CN 212863900 U CN212863900 U CN 212863900U
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Abstract
The utility model provides a landing leg small side door formula gantry crane, includes the crane span structure that the end beam of being connected the girder by the girder, and the crane span structure both ends set up the landing leg respectively, and every end symmetry sets up two landing legs, sets up the middle part crossbeam between two landing legs, the middle part crossbeam respectively to a pillar respectively stretches out in the outside of two landing legs, and the pillar of homonymy, the landing leg outside constitute triangle-shaped truss bearing structure, and the middle part crossbeam, the space that two landing legs formed constitute the small side door, solved the inboard headroom of rigidity landing leg not enough to lead to fortune roof beam car and precast beam can't pass through shortcoming, fortune roof beam car and precast beam get into appointed hoist and mount position from the small side door, can show the hoist and mount size length scope that increases the hoist, improve equipment utilization ratio, the small side door that sets up on the landing leg small.
Description
Technical Field
The utility model belongs to the technical field of gantry crane, concretely relates to landing leg side door formula gantry crane.
Background
A gantry crane (also called a gantry crane) is a bridge crane in which a bridge is supported on a ground rail by legs at both sides. Structurally, the crane consists of a portal frame, a cart running mechanism, a hoisting trolley, an electric part and the like. Some gantry cranes have legs on one side only, and the other side is supported on a factory or a trestle to run, and are called semi-gantry cranes. The gantry crane comprises a gantry upper bridge (comprising a main beam and an end beam), supporting legs, a middle cross beam and the like. In order to enlarge the operation range of the crane, the main beam can extend out of the supporting legs to one side or two sides to form a cantilever. The crane can also adopt a crane trolley with an arm support, and the operation range of the crane is expanded through the pitching and the rotating of the arm support.
The gantry crane has the characteristics of high site utilization rate, large operation range, wide application range, strong universality and the like, and is widely used in storage logistics, precision machining, metal manufacturing, wind power, automobile manufacturing, rail transit and engineering machinery. The metal structure of the device is like a door-shaped frame, two support legs are arranged under a bearing main beam, and the device can directly walk on a track on the ground. Gantry cranes generally have three mechanisms: namely, hoisting mechanisms (with large hoisting capacity, two sets of hoisting mechanisms, namely a main hoisting mechanism and an auxiliary hoisting mechanism), a trolley running mechanism and a cart running mechanism. According to a normal working procedure, starting a hoisting mechanism from a hoisting action, descending an empty hook, hoisting an object to a certain height, and then starting a trolley running mechanism and a cart running mechanism to a specified position to stop; after the lifting mechanism is started to lower the articles, the empty hook is lifted to a certain height, and the crane with the trolley running mechanism and the crane with the cart running mechanism are started to return to the original positions for second lifting operation. The components are usually first transported by a transport vehicle to a hoisting position and hoisted by moving or adjusting a gantry crane. Due to the span limitations of the gantry cranes, the sum of the lengths of the transport vehicle and the hoisted objects is usually smaller than the span of the gantry cranes. In the construction process of hoisting bridge engineering, sometimes a precast beam longer than the span of a portal crane needs to be hoisted, and the prior art is difficult to realize hoisting the precast beam with longer length or even length larger than the span of the portal crane.
Disclosure of Invention
In order to solve the work progress of hoist and mount bridge engineering, need hoist and mount the precast beam long than gantry crane's span, and prior art is difficult to realize lifting by crane the problem to the longer precast beam that even length is greater than this gantry crane span of length, the utility model provides a landing leg little side door formula gantry crane.
The utility model provides a its technical problem adopt following technical scheme to realize:
the utility model provides a landing leg small side door formula gantry crane, includes the crane span structure that constitutes by the end beam of girder and connection girder, and the crane span structure both ends set up the landing leg respectively, and every end symmetry sets up two landing legs, set up the middle part crossbeam between two landing legs, the middle part crossbeam respectively to a pillar respectively stretches out in the outside of two landing legs, and the pillar, the landing leg outside of homonymy constitute triangle-shaped truss bearing structure, and the space that middle part crossbeam, two landing legs formed constitutes the small side door.
The middle parts of the two support legs are fixedly provided with steel structure connecting plates E, one ends of the two steel structure connecting plates E are fixedly connected with the middle cross beam, the other ends of the two steel structure connecting plates E are respectively and fixedly connected with the support columns, the end part of each support column is fixedly connected with a steel structure connecting plate D, one end of each steel structure connecting plate D is fixedly connected with one end of a connecting rod B, the other end of each connecting rod B is fixedly connected with a steel structure connecting plate A, the steel structure connecting plates A are fixed on the upper; steel construction connecting plate D other end fixedly connected with connecting rod A's one end, connecting rod A's other end fixedly connected with steel construction connecting plate C, steel construction connecting plate C fixed connection is in the landing leg lower part, and steel construction connecting plate C stretches out to the landing leg outside.
The inboard fixedly connected with in landing leg top is to the steel construction connecting plate B that stretches out to the inboard, steel construction connecting plate B fixed connection connecting rod C's one end, connecting rod C's other end fixed connection steel construction connecting plate F, steel construction connecting plate F fixed connection end roof beam.
The middle parts of the two support legs are fixedly welded with the steel structure connecting plates E, the end part of each support leg is fixedly connected with the steel structure connecting plate D and is welded with the steel structure connecting plate A, the steel structure connecting plate A is fixed on the upper parts of the support legs and is welded with the upper parts of the support legs, and the steel structure connecting plate C is fixedly connected on the lower parts of the support legs and is welded with the lower parts; one end of each of the two steel structure connecting plates E is fixedly connected with the middle cross beam, the other end of each of the two steel structure connecting plates E is respectively fixedly connected with the support column, one end of each of the two steel structure connecting plates E is fixedly connected with the middle cross beam through a bolt or a rivet or a welding fixture, the other end of each of the two steel structure connecting plates E is respectively fixedly connected with the support column through a bolt or a rivet or a welding fixture, one end of each of the steel structure connecting plates D is fixedly connected with one end of a connecting rod B, the other end of each of the steel structure connecting plates B is fixedly connected with one end of a connecting rod A through a bolt or a rivet or a welding fixture, the other end of each of the steel structure connecting plates D is fixedly connected with one end of a connecting rod, the other end of the steel structure connecting plate D is fixedly connected with one end of a connecting rod A through a bolt or a rivet or welding, and the other end of the connecting rod A is fixedly connected with a steel structure connecting plate C through a bolt or a rivet or welding.
The inner side of the top of the support leg is fixedly connected with a steel structure connecting plate B which extends inwards, the inner side of the top of the support leg is fixedly connected with the steel structure connecting plate B which extends inwards in a welding mode, and the steel structure connecting plate F is fixedly connected with an end beam which is fixedly connected with the steel structure connecting plate F in a welding mode; the steel structure connecting plate B is fixedly connected with one end of a connecting rod C, the other end of the connecting rod C is fixedly connected with a steel structure connecting plate F, the steel structure connecting plate B is fixedly connected with one end of the connecting rod C through a bolt or a rivet or a welding, and the other end of the connecting rod C is fixedly connected with the steel structure connecting plate F through a bolt or a rivet or a welding.
Compared with the prior art, the utility model discloses an improve the structure of gantry crane landing leg, set up triangular truss bearing structure on the landing leg, the space in middle part crossbeam and two landing legs forms the little side door, the inboard headroom of rigidity landing leg has been solved and the shortcoming that leads to fortune roof beam car and precast beam to pass through inadequately, fortune roof beam car and precast beam get into appointed hoist and mount position from the little side door, can show the hoist and mount size length scope that increases the hoist, improve equipment utilization ratio, the little side door that sets up on the landing leg little side door gantry crane adopts articulated frame construction, high strength, wholeness and anti-seismic performance are good.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of a conventional gantry crane.
Fig. 3 is a schematic view of the hoisting of the present invention.
Wherein, 1 is a crane trolley; 2 is a bridge frame; 3 is a support leg; 31 is a steel structure connecting plate A; 32 is a steel structural connecting plate B; 33 is a steel structural connecting plate C; 34 is a steel structure connecting plate D; 35 is a steel structural connecting plate E; 4 is a middle cross beam; 41 is a pillar; 5 is a guide wheel; 61 is connecting rod A; 62 is connecting rod B; 63 is connecting rod C; 7 is an end beam; 8 is a truss support structure; and 9 is a small side door.
Detailed Description
As shown in fig. 1-3, the utility model relates to a landing leg small side door formula gantry crane, including trolley 1, crane span structure 2, trolley 1 sets up on crane span structure 2, and crane span structure 2 includes girder and connects the end beam 7 of girder, and the below symmetry of end beam 7 sets up landing leg 3, and 3 bottoms of landing leg are provided with leading wheel 5, can make landing leg small side door formula gantry crane along rail mobility.
The middle parts of the two supporting legs 3 of one side end beam are provided with a middle cross beam 4, two ends of the middle cross beam 4 respectively extend out of a supporting column 41 towards the outer sides of the two supporting legs 3, and the two supporting columns 41 are respectively fixed with the two supporting legs 3 through steel structure connecting plates E35.
In order to ensure the stress condition of the landing legs 3 of the small-side door type crane, truss support structures 8 on the outer sides of the landing legs are arranged on the outer sides of the two landing legs 3. For convenience of explanation of the structure of the truss support mechanism 8, the following description will be made specifically by taking the right leg 3 in fig. 1 as an example:
specifically, the middle part of the supporting leg 3 is fixedly connected with a steel structure connecting plate E35, the steel structure connecting plate E35 is preferably fixed on the supporting leg 3 through welding, so that the supporting leg is most stable and convenient to transport, one end of the steel structure connecting plate E35 is fixedly connected with the end part of the middle cross beam 4, the other end of the steel structure connecting plate E35 is fixedly connected with a supporting column 41, and the supporting column 41 extends out of the outer side of the supporting leg 3 and is fixedly connected with a steel structure connecting plate D34; the fixed connection between the pillar 41 and the steel structure connecting plate E35 is preferably fixed by welding, the fixed connection between the steel structure connecting plate E35 and the middle cross beam 4 is preferably fixed by bolts convenient to detach, the bolts are convenient to detach, transition and transport, and the bolts can also be fixedly connected by riveting and welding.
Steel construction connecting plate D34 one end fixed connection pole A61, connecting rod A61 fixed connection steel construction connecting plate C33, steel construction connecting plate C33 fixed connection is in the lower part of landing leg 3, and steel construction connecting plate C33 stretches out to the landing leg 3 outside. Specifically, one end of the steel structure connecting plate D34 is fixed to one end of the connecting rod a61 through bolts or riveting or welding, the other end of the connecting rod B62 is fixed to one end of the steel structure connecting plate C33 extending out of the outer side of the supporting leg 3 through bolts or riveting or welding, and the other end of the steel structure connecting plate C33 is fixed to the lower portion of the supporting leg 3 through welding.
The other end of steel structure connecting plate D34 fixed connection pole B62, connecting rod B62 fixed steel structure connecting plate A31, steel structure connecting plate A31 is through welded fastening in landing leg 3 upper portion, and steel structure connecting plate A31 stretches out to the landing leg 3 outside. Specifically, the other end of the steel structure connecting plate D34 is fixed to one end of the connecting rod B62 by bolts or riveting or welding, and the other end of the connecting rod B62 is fixed to one end of the steel structure connecting plate a31 extending out of the outer side of the leg 3 by bolts or riveting or welding.
The upper portion of landing leg 3 welds the one end of steel construction connecting plate B32, and the other end of steel construction connecting plate B32 stretches out to landing leg 3 inboard, and the one end of the steel construction connecting plate B32 that stretches out to landing leg 3 inboard is through bolt or riveting or welded connection pole C63, and the other end of connecting pole C63 is through bolt or riveting or welded steel construction connecting plate F (not drawn in the figure) one end, and the other end welded fastening of steel construction connecting plate F is in the bottom of end beam 7.
The pillar 42 and the outer side of the leg 3 on the same side form a triangular truss supporting structure, and under the node load uniformly distributed along the span, the axial force of the upper chord and the lower chord is maximum at the end points and gradually decreases towards the midspan.
The middle cross beam 4, the middle lower parts of the two support legs 3 and the two steel structure connecting plates D34 form a small side door 9, and the small side door 9 is of a trapezoidal truss structure. The middle cross beam 4 and the steel structure connecting plate E35 are fixed in a rivet or bolt or welding mode and bear the load of the inside horizontal direction of the small side door 9, the upper parts of the middle cross beam 4, the end beam 7 and the two supporting legs 3 form a trapezoidal truss structure, compared with a triangular truss, the stress condition of the rod piece is improved to some extent, and the stress condition of the triangular truss rod piece is slightly worse than that of a trapezoid.
The steel structure connecting plate E35, the strut 41, the connecting rod A61 and the middle lower part of the support leg 3 form a triangular truss, and similarly, the middle lower part of the other steel structure connecting plate 41, the other strut 41, the other connecting rod A61 and the other support leg 3 form another triangular truss, so that the axial stress is uniformly distributed on the two support legs 3.
A large triangular truss is formed among the connecting rod A61, the connecting rod B62 and the leg 3.
The small side door 9 of the small side door type crane and the truss support structure 8 outside the supporting legs 3 are fixedly connected or hinged, so that the whole portal crane is good in integrity and anti-seismic performance.
Traditional portal crane is at the hoist and mount in-process, and the transport vechicle will wait to lift by crane the prefab and transport to the assigned position, and the total length of transport vechicle and precast beam is less than portal crane's span, then portal crane's leading wheel 5 along the hoist and mount position of track adjustment portal crane.
The working process of the utility model is as follows:
the transport vehicle enters a specified hoisting position at a small side door 10 of the landing leg small side door type crane, and when the precast beam with longer length is transported, the other end of the transport vehicle can extend out of the outer side of the end beam 7. The crane trolley 1 moves on the bridge frame 2 to lift the precast beam, so that the length of the lifted precast beam is not limited by the span of the small-side door type portal crane.
What has been described above is only the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, without departing from the overall concept of the present invention, a plurality of changes and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the utility of the patent.
Claims (5)
1. The utility model provides a landing leg small side door formula gantry crane, includes the crane span structure that constitutes by girder and the end beam of connecting the girder, and the crane span structure both ends set up the landing leg respectively, and every end symmetry sets up two landing legs, its characterized in that: the middle cross beam is arranged between the two supporting legs, the middle cross beam respectively extends out of a supporting column to the outer sides of the two supporting legs, the supporting columns and the outer sides of the supporting legs on the same side form a triangular truss supporting structure, and a space formed by the middle cross beam and the two supporting legs forms a small side door.
2. A leg small side door gantry crane according to claim 1, characterized in that: the middle parts of the two support legs are fixedly provided with steel structure connecting plates E, one ends of the two steel structure connecting plates E are fixedly connected with the middle cross beam, the other ends of the two steel structure connecting plates E are respectively and fixedly connected with the support columns, the end part of each support column is fixedly connected with a steel structure connecting plate D, one end of each steel structure connecting plate D is fixedly connected with one end of a connecting rod B, the other end of each connecting rod B is fixedly connected with a steel structure connecting plate A, the steel structure connecting plates A are fixed on the upper; steel construction connecting plate D other end fixedly connected with connecting rod A's one end, connecting rod A's other end fixedly connected with steel construction connecting plate C, steel construction connecting plate C fixed connection is in the landing leg lower part, and steel construction connecting plate C stretches out to the landing leg outside.
3. A leg small side door gantry crane according to claim 2, characterized in that: the inboard fixedly connected with in landing leg top is to the steel construction connecting plate B that stretches out to the inboard, steel construction connecting plate B fixed connection connecting rod C's one end, connecting rod C's other end fixed connection steel construction connecting plate F, steel construction connecting plate F fixed connection end roof beam.
4. A leg small side door gantry crane according to claim 2, characterized in that: the middle parts of the two support legs are fixedly welded with the steel structure connecting plates E, the end part of each support leg is fixedly connected with the steel structure connecting plate D and is welded with the steel structure connecting plate A, the steel structure connecting plate A is fixed on the upper parts of the support legs and is welded with the upper parts of the support legs, and the steel structure connecting plate C is fixedly connected on the lower parts of the support legs and is welded with the lower parts; one end of each of the two steel structure connecting plates E is fixedly connected with the middle cross beam, the other end of each of the two steel structure connecting plates E is respectively fixedly connected with the support column, one end of each of the two steel structure connecting plates E is fixedly connected with the middle cross beam through a bolt or a rivet or a welding fixture, the other end of each of the two steel structure connecting plates E is respectively fixedly connected with the support column through a bolt or a rivet or a welding fixture, one end of each of the steel structure connecting plates D is fixedly connected with one end of a connecting rod B, the other end of each of the steel structure connecting plates B is fixedly connected with one end of a connecting rod A through a bolt or a rivet or a welding fixture, the other end of each of the steel structure connecting plates D is fixedly connected with one end of a connecting rod, the other end of the steel structure connecting plate D is fixedly connected with one end of a connecting rod A through a bolt or a rivet or welding, and the other end of the connecting rod A is fixedly connected with a steel structure connecting plate C through a bolt or a rivet or welding.
5. A leg small side door gantry crane according to claim 3, characterized in that: the inner side of the top of the support leg is fixedly connected with a steel structure connecting plate B which extends inwards, the inner side of the top of the support leg is fixedly connected with the steel structure connecting plate B which extends inwards in a welding mode, and the steel structure connecting plate F is fixedly connected with an end beam which is fixedly connected with the steel structure connecting plate F in a welding mode; the steel structure connecting plate B is fixedly connected with one end of a connecting rod C, the other end of the connecting rod C is fixedly connected with a steel structure connecting plate F, the steel structure connecting plate B is fixedly connected with one end of the connecting rod C through a bolt or a rivet or a welding, and the other end of the connecting rod C is fixedly connected with the steel structure connecting plate F through a bolt or a rivet or a welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021631902.2U CN212863900U (en) | 2020-08-07 | 2020-08-07 | Landing leg small side door type portal crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021631902.2U CN212863900U (en) | 2020-08-07 | 2020-08-07 | Landing leg small side door type portal crane |
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| Publication Number | Publication Date |
|---|---|
| CN212863900U true CN212863900U (en) | 2021-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021631902.2U Active CN212863900U (en) | 2020-08-07 | 2020-08-07 | Landing leg small side door type portal crane |
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|---|---|
| CN (1) | CN212863900U (en) |
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- 2020-08-07 CN CN202021631902.2U patent/CN212863900U/en active Active
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