CN213013940U - High-low supporting leg bridge girder erection machine suitable for aviation height-limiting area - Google Patents
High-low supporting leg bridge girder erection machine suitable for aviation height-limiting area Download PDFInfo
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- CN213013940U CN213013940U CN202021180449.8U CN202021180449U CN213013940U CN 213013940 U CN213013940 U CN 213013940U CN 202021180449 U CN202021180449 U CN 202021180449U CN 213013940 U CN213013940 U CN 213013940U
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Abstract
The utility model discloses a height landing leg bridging machine suitable for aviation limit for height district, include: the main beam is provided with a crown block track and a hoisting crown block; the guide beam is connected to one end of the main beam; the front auxiliary supporting leg is arranged below the guide beam; at least two groups of middle supporting legs are arranged at the front end and the rear end of the main beam; wherein, well landing leg includes: the upper end surface of the first supporting beam is provided with an anchoring device, and the anchoring device is provided with a horizontal adjusting mechanism which is connected with the main beam and used for adjusting the main beam to move front and back and left and right; and the jacking mechanism is connected below the first supporting beam and used for adjusting the first supporting beam to move up and down. The utility model discloses can be between high low mound with the swift conversion of height gesture.
Description
Technical Field
The utility model relates to a bridge girder erection machine field. More specifically, the utility model relates to a height landing leg bridging machine suitable for aviation limit for height district.
Background
Along with the requirement of city rapid construction in China, the prefabricated segment assembling process is increasingly applied to city bridges because of the great advantages of easy quality control, small influence on traffic and environment in construction, high construction speed, less manpower input, capability of greatly reducing shrinkage and creep of concrete after installation and bridge formation and the like. The bridge girder erection machine which is a special device matched with the process is also greatly developed, a descending bridge girder erection machine is often needed in some regions with aviation height limitation, and along with the extension of a longitudinal slope, after the region with the height limitation is crossed, a pier can be changed from a low pier to a high pier, the descending bridge girder erection machine before is not practical any more, and the ascending bridge girder erection machine needs to be disassembled again, so that the construction period is often greatly limited. Meanwhile, the height cannot be increased by adopting the under-bridge vertical hoisting process, and the tail part beam feeding mode needs to be changed, so that high requirements are put forward on the applicability of the equipment.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a height landing leg bridging machine suitable for aviation limit for height district can be with the swift conversion of height gesture between the height mound.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a high-low leg bridge crane suitable for an aviation height limiting area, comprising:
the main beam is provided with a crown block track and a hoisting crown block;
the guide beam is connected to one end of the main beam;
the front auxiliary supporting leg is arranged below the guide beam;
at least two groups of middle supporting legs are arranged at the front end and the rear end of the main beam;
wherein, well landing leg includes:
the upper end surface of the first supporting beam is provided with an anchoring device, and the anchoring device is provided with a horizontal adjusting mechanism which is connected with the main beam and used for adjusting the main beam to move front and back and left and right;
and the jacking mechanism is connected below the first supporting beam and used for adjusting the first supporting beam to move up and down.
Preferably, the overhead traveling crane track sets up in the girder inboard, the overhead traveling crane landing leg has been arranged on the overhead traveling crane track, be provided with on the overhead traveling crane landing leg the jack-up overhead traveling crane, be equipped with actuating mechanism and hoist mechanism on the jack-up overhead traveling crane.
Preferably, the front auxiliary leg includes:
an upper support beam anchored with the guide beam;
a pair of scalable bearing structure, it sets up in last supporting beam lower extreme left and right sides, connects through connecting frame between a pair of scalable bearing structure, connecting frame pass through fixed pull rod with go up the supporting beam and connect, through fixed pull rod adjusts connecting frame and reciprocates to drive scalable support and stretch out and draw back
Preferably, the telescopic support structure further comprises an extension bar which is detachably arranged at the lower end of the telescopic support structure.
Preferably, the upper supporting beam is provided with a lifting platform.
Preferably, the first support beam and the upper support beam are both box-type frame structures.
Preferably, a plurality of detachable cushion blocks are arranged below the jacking mechanism.
Preferably, the main beam is composed of two bearing steel box girders arranged in parallel, and the guide girder is composed of two steel truss girders arranged in parallel.
The utility model discloses at least, include following beneficial effect:
1. the method is suitable for erecting the prefabricated section beam in the complicated and changeable area of the geographical environment such as the aviation limit.
2. The bridge girder erection machine is prevented from being refitted and repeatedly installed and dismantled, the application range and the utilization rate of equipment are improved, and the site construction efficiency is improved.
3. The method for adjusting the height posture of the bridge girder erection machine is simple, practical, convenient and quick and low in cost.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a high-low leg bridge girder erection machine suitable for an aviation height-limiting area;
FIG. 2a is a schematic view of a low profile configuration of the middle leg;
FIG. 2b is a schematic structural view of a high posture of the middle leg;
FIG. 3a is a schematic view of a low profile configuration of the front auxiliary leg;
FIG. 3b is a high-profile schematic view of the front auxiliary leg;
FIG. 4a is a schematic view of the process of adjusting the high and low postures of the bridge girder erection machine in step one;
FIG. 4b is a schematic view of the process of adjusting the high and low postures of the bridge girder erection machine in step two;
FIG. 4c is a schematic view of the adjustment process of the height attitude of the bridge girder erection machine in step four.
The crane comprises a main beam 1, a crown block track 2, a hoisting crown block 3, a guide beam 4, auxiliary support legs 5, middle support legs 6, first support beams 7, anchoring devices 8, a horizontal adjusting mechanism 9, a jacking mechanism 10, crown block support legs 11, upper support beams 12, a telescopic support structure 13, a connecting frame 14, a fixed pull rod 15, an extension rod 16, a lifting platform 17, a cushion block 18, an installed beam section 19 and a pin shaft hole 21.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1, the utility model provides a height landing leg bridging machine suitable for aviation limit for height district, include:
the main beam 1 is provided with a crown block track 2 and a hoisting crown block 3;
a guide beam 4 connected to one end of the main beam 1;
a front auxiliary leg 5 disposed under the guide beam 4;
at least two groups of middle supporting legs 6 are arranged at the front end and the rear end of the main beam 1;
as shown in fig. 2a to 2b, the middle leg 6 includes:
the left side and the right side of the upper end surface of the first supporting beam 7 are respectively provided with an anchoring device 8, and the anchoring devices 8 are provided with horizontal adjusting mechanisms 9 which are connected with the main beam 1 and used for adjusting the main beam 1 to move front and back and left and right; the horizontal adjusting mechanism 9 is composed of a plurality of hydraulic oil cylinders, can adjust the adaptive curve of the bridge girder erection machine left and right, and can adjust the main girder 1 of the bridge girder erection machine to move back and forth;
the jacking mechanism 10 is connected below the first supporting beam 7 and used for adjusting the first supporting beam 7 to move up and down, the jacking mechanism 10 is a hydraulic oil cylinder and is respectively arranged on the left side and the right side below the first supporting beam 7, and the bridge girder erection machine can be adjusted up and down within a certain height range.
In another kind of technical scheme, overhead traveling crane track 2 sets up in girder 1 inboard, overhead traveling crane landing leg 11 has been arranged on overhead traveling crane track 2, be provided with on the overhead traveling crane landing leg 11 jack-up overhead traveling crane 3, be equipped with actuating mechanism and hoist mechanism on the jack-up overhead traveling crane 3, the overhead traveling crane can hide between two girders 1 when the limit for height requires, reduces whole height.
In the technical scheme, the bridge girder erection machine is in an ultralow attitude when the bridge girder erection machine is positioned in an aviation height-limiting area, the crown block is hidden between the two main girders 1, the overall height is low, and the bridge girder erection is vertically lifted under the bridge; when the bridge girder arrives at a high pier area, the bridge girder erection machine is adjusted to be in a high posture by the aid of the jacking mechanism 10 and the cushion block 18, and a girder is erected in a tail girder feeding mode. The whole bridge girder erection machine equipment is flexible and quick in high-low posture conversion and strong in applicability.
In another solution, as shown in fig. 3a to 3b, the front auxiliary leg 5 comprises:
the upper supporting beam 12 is of a box-type frame structure, and the left side and the right side of the upper end of the upper supporting beam 12 are respectively anchored with the guide beam 4 through stud bolts;
the pair of telescopic supporting structures 13 are arranged on the left side and the right side of the lower end of the upper supporting beam 12, the telescopic supporting structures 13 can be of a type that two sleeves are sleeved to realize stretching and fixing through a bearing pin shaft, a plurality of pin shaft holes 21 are uniformly formed in the telescopic supports along the length direction of the telescopic supports, the pair of telescopic supporting structures 13 are connected through a connecting frame 14, the connecting frame 14 is connected with the upper supporting beam 12 through a fixed pull rod 15, and the connecting frame 14 is adjusted to move up and down through the fixed pull rod 15 so as to drive the telescopic supporting structures 13 to stretch; when the front auxiliary leg 5 is adjusted to a proper position, the bearing pin shaft is inserted into the pin shaft hole 21 of the telescopic supporting structure 13 to lock the height of the front auxiliary leg 5.
In another technical scheme, the device further comprises an extension bar 16 which is detachably arranged at the lower end of the telescopic supporting structure 13 and used for increasing the height of the bridge erecting machine.
In another technical scheme, a lifting platform 17 is arranged on the upper supporting beam 12, so that workers can go up and down conveniently.
In another solution, the first support beam 7 and the upper support beam 12 are both box frame structures.
In another technical scheme, a plurality of detachable cushion blocks 18 are arranged below the jacking mechanism 10 and between the installed beam section 19 and the main beam 1, and when the height needs to be adjusted to be too large, the cushion blocks 18 can be added.
In another technical scheme, the main beam 1 is composed of two bearing steel box girders arranged in parallel, and the guide beam 4 is composed of two steel truss girders arranged in parallel.
As shown in fig. 4a to 4c, the steps of applying the height-adjustable leg bridge girder erection machine adjustment suitable for the aviation height-limited area are as follows:
the method comprises the following steps: when the bridge girder erection machine is in an initial state, the bridge girder erection machine is in a lowest state, and the requirement of aviation height limitation is met;
step two: the whole bridge girder erection machine structure is jacked for 500mm through hydraulic cylinders of jacking mechanisms 10 of two middle supporting legs 6, and then 500mm cushion blocks 18 are added on beam sections 19 which are installed near the middle supporting legs 6;
step three: the hydraulic oil cylinders of the jacking mechanisms 10 of the two middle supporting legs 6 are contracted by 500mm through the added cushion blocks 18 for bearing force, and then the 500mm cushion blocks 18 are plugged into the lower parts of the two middle supporting legs 6;
step four: and the relay is alternated until the main beam 1 of the bridge girder erection machine reaches the required height from the beam surface, so that the height posture of the bridge girder erection machine is adjusted.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (8)
1. A height landing leg bridging machine suitable for aviation limit for height district, its characterized in that includes:
the main beam is provided with a crown block track and a hoisting crown block;
the guide beam is connected to one end of the main beam;
the front auxiliary supporting leg is arranged below the guide beam;
at least two groups of middle supporting legs are arranged at the front end and the rear end of the main beam;
wherein, well landing leg includes:
the upper end surface of the first supporting beam is provided with an anchoring device, and the anchoring device is provided with a horizontal adjusting mechanism which is connected with the main beam and used for adjusting the main beam to move front and back and left and right;
and the jacking mechanism is connected below the first supporting beam and used for adjusting the first supporting beam to move up and down.
2. The high-low leg bridge girder erection machine suitable for the aviation height limited area of claim 1, wherein the crown block track is arranged inside the main girder, crown block legs are arranged on the crown block track, the crown block is arranged on the crown block legs, and the crown block is provided with a driving mechanism and a lifting mechanism.
3. The high-low leg bridge girder erection machine suitable for aviation limited height areas as claimed in claim 1, wherein said front auxiliary leg comprises:
an upper support beam anchored with the guide beam;
the pair of telescopic supporting structures are arranged on the left side and the right side of the lower end of the upper supporting beam, the pair of telescopic supporting structures are connected through the connecting frame, the connecting frame is connected with the upper supporting beam through the fixed pull rod, and the connecting frame is adjusted to move up and down through the fixed pull rod so as to drive the telescopic supporting to stretch.
4. The high-low leg bridge girder erection machine suitable for the aviation height limited area of claim 3, further comprising an extension bar detachably provided at a lower end of the retractable support structure.
5. The high-low leg bridge girder erection machine suitable for the aviation height-limited area as claimed in claim 3 or 4, wherein a lifting platform is provided on the upper support beam.
6. The high-low leg bridge girder erection machine suitable for aviation limited height areas of claim 3, wherein the first support beam and the upper support beam are both box-type frame structures.
7. The high-low leg bridge girder erection machine suitable for the aviation height-limited area of claim 6, wherein a plurality of detachable cushion blocks are arranged below the jacking mechanism.
8. The high-low leg bridge girder erection machine suitable for the aviation height-limited area of claim 1, wherein the main girder is composed of two load-bearing steel box girders arranged in parallel, and the pilot girder is composed of two parallel steel truss girders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021180449.8U CN213013940U (en) | 2020-06-23 | 2020-06-23 | High-low supporting leg bridge girder erection machine suitable for aviation height-limiting area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021180449.8U CN213013940U (en) | 2020-06-23 | 2020-06-23 | High-low supporting leg bridge girder erection machine suitable for aviation height-limiting area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213013940U true CN213013940U (en) | 2021-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021180449.8U Active CN213013940U (en) | 2020-06-23 | 2020-06-23 | High-low supporting leg bridge girder erection machine suitable for aviation height-limiting area |
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| Country | Link |
|---|---|
| CN (1) | CN213013940U (en) |
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2020
- 2020-06-23 CN CN202021180449.8U patent/CN213013940U/en active Active
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