CN216864855U - Turnover middle support leg of bridge girder erection machine and bridge girder erection machine - Google Patents
Turnover middle support leg of bridge girder erection machine and bridge girder erection machine Download PDFInfo
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- CN216864855U CN216864855U CN202220312371.3U CN202220312371U CN216864855U CN 216864855 U CN216864855 U CN 216864855U CN 202220312371 U CN202220312371 U CN 202220312371U CN 216864855 U CN216864855 U CN 216864855U
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Abstract
The utility model provides a turnover middle support leg of a bridge girder erection machine and the bridge girder erection machine, which at least comprise a saddle beam positioned at the top, wherein two sides below the saddle beam are connected with a main girder of the bridge girder erection machine; the supporting leg unit is movably connected with the overturning unit and comprises an outer stand column and an inner stand column, and the inner stand column can stretch out and draw back from the bottom of the outer stand column so as to adjust the height of the supporting leg unit; the folding unit is used for driving the supporting leg unit to rotate around the overturning unit; the utility model solves the problem that the auxiliary supporting legs need to be detached and installed for multiple times when the bridge girder erection machine is actually used, avoids the condition that high-altitude operation is needed when a beam is erected, increases the application range of the bridge girder erection machine, and improves the construction efficiency and the safety.
Description
Technical Field
The utility model belongs to the field of bridge erecting equipment, and particularly relates to a reversible middle support leg of a bridge erecting machine and the bridge erecting machine.
Background
At present, the railway construction is developed at a high speed, the occupied ratio of bridges in a line is larger and larger, a bridge girder erection machine is one of main equipment for safe and quick construction of railway bridges, and the bridge girder erection machine has the main function of lifting beam pieces and then conveying the beam pieces to a beam girder erection position for putting down. In order to ensure the safe and stable via hole of the bridge girder erection machine, the bridge girder erection machine needs the assistance of a support leg during the via hole, so the support leg is a key factor for ensuring the safety and the reliability of a girder erection machine, the support leg system of the bridge girder erection machine generally comprises an auxiliary support leg, a front support leg and a rear support leg, the front support leg comprises a transverse moving unit, a support leg unit, an adjusting frame unit, a turntable and a longitudinal moving mechanism, the support leg unit consists of a standard knot and an adjusting knot, the auxiliary support leg is mainly used for matching with the front support leg and the rear support leg to complete the via hole in the via hole process of the bridge girder erection machine, however, most construction operations of the auxiliary support leg of the existing bridge girder erection machine need workers to climb onto a pier along the auxiliary support leg for operation construction, the high-altitude operation amount is large, and the existing auxiliary support leg does not have the function of directly meeting the construction operation of a tail-hole bridge after being overturned or stretched, the operation flow is complicated, and the construction efficiency is low, The safety risk is high, and when the bridge girder erection machine needs to move to pass through a tunnel, a tied arch bridge, the lower part of an existing line bridge, a gate pier and other working conditions or other conditions needing height adjustment, the auxiliary supporting legs need to be disassembled and then reassembled, so that the workload is increased, and the working efficiency is reduced. Therefore, it is necessary to develop an automatic-overturning type bridge erecting machine with a support leg instead of the conventional auxiliary support leg.
Disclosure of Invention
The utility model provides a reversible support leg in a bridge erecting machine and the bridge erecting machine, which overcome the defects of the prior art, solve the problem that an auxiliary support leg needs to be detached and installed for multiple times when the bridge erecting machine is actually used, realize automatic operation by electro-hydraulic control, avoid the condition that high-altitude operation is needed when a beam is erected, increase the application range of the bridge erecting machine and improve the construction efficiency and safety.
The technical scheme adopted for realizing the above purpose of the utility model is as follows:
the utility model provides a landing leg in frame bridge crane that can overturn, includes the saddle beam that is located the top at least, and saddle beam below both sides are connected with the girder of frame bridge crane, still include:
the overturning unit is movably connected with the main beam and can overturn to change an included angle between the overturning unit and the main beam in the vertical direction;
the supporting leg unit is movably connected with the overturning unit and comprises an outer upright column and an inner upright column, and the inner upright column can stretch out and draw back from the bottom of the outer upright column so as to adjust the height of the supporting leg unit;
and the folding unit is used for driving the leg unit to rotate around the overturning unit.
Pin holes are formed in the outer stand column and the inner stand column, and the bolt oil cylinder penetrates through the pin holes in the outer stand column and the inner stand column to lock the outer stand column and the inner stand column.
The pinhole on the outer column is provided with two horizontal rows, and the pinhole on the inner column is provided with and is no less than four horizontal rows, and the pinhole on every horizontal row in outer column and the inner column is 1 ~ 2, and the interval between the adjacent horizontal row equals.
The landing leg unit still includes jacking cylinder, and jacking cylinder is located the inside of outer column and inner column, and jacking cylinder's top is connected with the top of outer column, and jacking cylinder's bottom is connected with the bottom of inner column.
The overturning unit comprises an overturning seat connected below the main beam and an overturning oil cylinder used for overturning the overturning seat.
The turnover seat is movably connected with the main beam through a positioning pin oil cylinder.
The folding unit comprises a folding oil cylinder, the top end of the folding oil cylinder is connected to the bottom of the turnover seat, the bottom of the folding oil cylinder is connected to the side edge of the outer stand column, and the folding oil cylinder is used for driving the supporting leg unit to rotate around the turnover seat.
The supporting leg unit further comprises an adjusting joint and a hinged support, the top of the adjusting joint is connected with the bottom of the inner upright post, and the bottom of the adjusting joint is connected with the hinged support.
The bottom of the adjusting joint is connected with the hinged support through a fine adjustment screw rod.
A bridge girder erection machine comprises the middle supporting leg of the bridge girder erection machine.
Compared with the prior art, the utility model has the beneficial effects that: the middle supporting leg can assist a bridge girder erection machine to pass through holes, the middle supporting leg can control the overturning oil cylinder to overturn the overturning seat through an electro-hydraulic control system on the bridge girder erection machine during girder erection, control the overturning oil cylinder to overturn the supporting leg unit, control the jacking oil cylinder to stretch and further adjust the height of the supporting leg unit, and position the height of the middle supporting leg through the bolt oil cylinder to keep the structure of the middle supporting leg stable. The construction efficiency and the safety are improved.
Drawings
FIG. 1 is a schematic structural view of a middle leg provided by the present invention;
FIG. 2 is a side view of FIG. 1 provided by the present invention;
FIG. 3 is a schematic structural view of the flipping base provided in the present invention;
FIG. 4 is a first schematic structural diagram of an outer column and an inner column provided by the present invention;
FIG. 5 is a schematic structural diagram II of an outer column and an inner column provided by the present invention;
FIG. 6 is a schematic diagram of a leg unit according to the present invention shown in a rear-turning configuration;
FIG. 7 is a side view of FIG. 6 provided by the present invention;
FIG. 8 is a schematic structural view of the turnover seat provided by the present invention turning outwards;
FIG. 9 is a side view of FIG. 8 provided with the present invention;
in the figure: 1-saddle beam, 2-pin shaft, 3-main beam, 4-overturning seat, 5-supporting leg unit, 6-positioning pin cylinder, 7-overturning cylinder, 8-outer column, 9-inner column, 10-jacking cylinder, 11-bolt cylinder, 12-turning cylinder, 13-adjusting joint, 14-hinged seat, 15-fine adjusting screw rod, 16-mounting seat, 17-lug plate and 18-pin hole.
Detailed Description
The utility model is further illustrated by the following figures and examples.
With reference to fig. 1 to 3, the reversible middle support leg of the bridge girder erection machine at least comprises a saddle beam 1 positioned at the top, two sides below the saddle beam 1 are connected with a main beam 3 of the bridge girder erection machine, the middle support leg further comprises a turnover unit, a support leg unit 5 and a turning unit, the turnover unit comprises a turnover seat 4 movably connected with the main beam 3 and a turnover cylinder 7 connected to the side edge of the main beam 3, the main beam 3 is connected with the turnover seat 4 through a positioning pin cylinder 6, the side edge of the main beam 3 is provided with 2 mounting seats 16, the top of the turnover seat 4 is provided with an ear plate 17, the ear plate 17 at the top is provided with two connecting holes, two ends of the turnover cylinder 7 are respectively connected with the connecting holes at the bottoms of the mounting seats 16 and the ear plates 17 through pin shafts, and the mounting seat positioned at the lower part of the main beam 3 is connected with the connecting holes at the tops of the ear plates 17 through pin shafts;
the supporting leg unit 5 is movably connected with the overturning unit and comprises an outer stand column 8 and an inner stand column 9, the bottom of the overturning seat 4 is connected with the outer stand column 8 through a pin shaft 2, openings are formed in the bottom of the outer stand column 8 and the top of the inner stand column 9, the supporting leg unit further comprises a jacking oil cylinder 10, the jacking oil cylinder 10 is located inside the outer stand column and the inner stand column, the top of the jacking oil cylinder 10 is connected with the top of the outer stand column 8, the bottom of the jacking oil cylinder 10 is connected with the bottom of the inner stand column 9, and the inner stand column stretches out and draws back at the bottom of the outer stand column through the jacking oil cylinder; the outer column 8 and the inner column 9 are provided with pin holes 18 corresponding in position, the outer column 8 is provided with four pin holes in two transverse rows, the inner column 9 is provided with twelve pin holes in six transverse rows, and the distance between the adjacent transverse rows is equal. Sockets are arranged in the overlapped areas of the outer upright column and the inner upright column, and the bolt oil cylinder 11 penetrates through the pin hole 18 and the sockets to fix the outer upright column 8 and the inner upright column 9, as shown in fig. 4 and 5; the supporting leg unit 5 further comprises an adjusting joint 13 and a hinged support 14, the top of the adjusting joint 13 is connected with the bottom of the inner upright post 9, and the bottom of the adjusting joint 13 is connected with the hinged support 14 through a fine adjustment screw 15;
the turning unit comprises a turning oil cylinder 12, the top end of the turning oil cylinder 12 is connected with an ear plate arranged at the bottom of the turning seat 4, the bottom end of the turning oil cylinder 12 is connected with an ear plate arranged at the side edge of the outer upright post 8, and the turning oil cylinder is used for driving the supporting leg unit to rotate around the turning seat.
The middle supporting leg provided by the embodiment completes the installation of each component on the bridge girder erection machine before supporting and overturning operations, and ensures that each component runs well, and the overturning oil cylinder 7, the turning oil cylinder 12 and the jacking oil cylinder 10 are all controlled by an electro-hydraulic control system on the bridge girder erection machine in the operation process.
As shown in fig. 6 and 7, the supporting operation steps of the middle leg provided by this embodiment are as follows:
(1) loosening a pin shaft at the joint of the mounting seat at the lower part of the side edge of the main beam 3 and the lug plate 17 of the turnover seat 4, operating the turnover oil cylinder 7 to push the turnover seat 4 outwards, driving the supporting leg unit 5 and other components mounted on the supporting leg unit 5 to turn from the outer side of the main beam 3 to the bottom of the main beam 3 (parallel to the bottom of the main beam 3) by the turnover seat 4 until the turnover seat 4 is attached to the bottom of the main beam 3, locking the mounting seat at the lower part of the side edge of the main beam 3 and the lug plate 17 of the turnover seat 4 through the pin shaft, and operating the positioning pin oil cylinder 6 to insert into a positioning hole so as to position and lock the turnover seat 4 and the bottom of the main beam 3;
(2) loosening the pin shaft 2 in the pin hole at the joint of the bottom of the turnover seat 4 and the top of the outer upright post 8, operating the turning oil cylinder 12 to enable the supporting leg unit 5 to rotate 90 degrees on the turnover seat 4, turning the supporting leg unit from being parallel to the main beam 3 to being vertical to the main beam 3 to achieve a plumb state, and inserting the pin shaft 2 into the pin hole at the joint of the bottom of the turnover seat 4 and the top of the outer upright post 8 for locking;
(3) the bolt oil cylinder 11 is operated to ensure that the upright column bolt of the bolt oil cylinder 11 is completely pulled out from the pin hole 18 and the socket, and the vertical locking of the supporting leg unit 5 is released;
(4) operating the jacking oil cylinder 10 to enable the inner upright post 9 to extend out and be supported on the ground through a hinged support 14 connected with the bottom of the inner upright post 9;
(5) and operating the bolt oil cylinder 11 to push the upright post bolt of the bolt oil cylinder 11 into the socket and the pin hole 18, so that the outer upright post 8 and the inner upright post 9 are vertically locked, the supporting operation of the middle supporting leg is finished, the middle supporting leg in a supporting state is shown in figure 1, and the pin hole position is shown in figure 2.
If the slope needs to be adjusted in the supporting process, the jacking oil cylinder 10 can be operated to stretch the inner upright post 9 or the adjusting joint 13 and the fine adjustment bolt are increased or decreased for height adjustment.
As shown in fig. 8 and 9, the turning operation steps of the middle support leg provided by the utility model are as follows:
(1) operating the bolt oil cylinder 11 to completely pull out the upright bolt of the bolt oil cylinder 11 from the socket and the pin hole 18, and releasing the vertical locking of the supporting leg unit 5;
(2) the jacking oil cylinder 10 is operated to retract, so that the inner upright post 9 retracts into the outer upright post 8, the supporting leg unit 5 is shortened to the shortest state, and the middle supporting leg is separated from the ground and is suspended below the main beam 3;
(3) loosening the pin shaft 2 at the joint of the top of the outer stand column 8 and the bottom of the turnover seat 4, operating the turnover oil cylinder 12 to enable the support leg unit 5 to turn over backwards by 90 degrees on the turnover seat 4 to the bottom of the main beam 3 and be parallel to the bottom surface of the main beam 3, then inserting the pin shaft at the top of the outer stand column 8 of the pin shaft, and locking the outer stand column and the turnover seat;
(4) the positioning pin oil cylinder 6 is operated to be pulled out from the positioning hole, a pin shaft at the joint of the mounting seat at the lower part of the side edge of the main beam 3 and the lug plate 17 of the turnover seat 4 is loosened, and the positioning locking between the turnover seat 4 and the main beam 3 is released;
(5) and the overturning oil cylinder 7 is contracted, so that the overturning seat 4 drives the supporting leg unit 5 and other structures installed on the supporting leg unit 5 to overturn towards the outer side of the main beam 3, the installation seat at the lower part of the side edge of the main beam and the lug plate 17 of the overturning seat 4 are locked through a pin shaft, and the overturning operation is finished.
Claims (10)
1. The utility model provides a landing leg in frame bridge crane that can overturn, is at least including the saddle roof beam that is located the top, and saddle roof beam below both sides are connected with the girder of frame bridge crane, its characterized in that still includes:
the overturning unit is movably connected with the main beam and can overturn to change an included angle between the overturning unit and the main beam in the vertical direction;
the supporting leg unit is movably connected with the overturning unit and comprises an outer upright column and an inner upright column, and the inner upright column can stretch out and draw back from the bottom of the outer upright column so as to adjust the height of the supporting leg unit;
and the folding unit is used for driving the leg unit to rotate around the overturning unit.
2. The reversible middle leg of a bridge girder erection machine according to claim 1, wherein: pin holes are formed in the outer stand column and the inner stand column, and the bolt oil cylinder penetrates through the pin holes in the outer stand column and the inner stand column to lock the outer stand column and the inner stand column.
3. The reversible middle leg of a bridge girder erection machine according to claim 2, wherein: the pinhole on the outer column is provided with two horizontal rows, and the pinhole on the inner column is provided with and is no less than four horizontal rows, and the pinhole on every horizontal row in outer column and the inner column is 1 ~ 2, and the interval between the adjacent horizontal row equals.
4. The reversible middle leg of a bridge girder erection machine according to claim 1, wherein: the landing leg unit still includes jacking cylinder, and jacking cylinder is located the inside of outer column and inner column, and jacking cylinder's top is connected with the top of outer column, and jacking cylinder's bottom is connected with the bottom of inner column.
5. A reversible bridge girder erection machine center leg as claimed in claim 1, wherein: the overturning unit comprises an overturning seat connected below the main beam and an overturning oil cylinder used for overturning the overturning seat.
6. The reversible middle leg of a bridge girder erection machine according to claim 5, wherein: the turnover seat is movably connected with the main beam through a positioning pin oil cylinder.
7. The reversible middle leg of a bridge girder erection machine according to claim 5, wherein: the folding unit comprises a folding oil cylinder, the top end of the folding oil cylinder is connected to the bottom of the turnover seat, the bottom of the folding oil cylinder is connected to the side edge of the outer stand column, and the folding oil cylinder is used for driving the supporting leg unit to rotate around the turnover seat.
8. The reversible middle leg of a bridge girder erection machine according to claim 1, wherein: the supporting leg unit further comprises an adjusting joint and a hinged support, the top of the adjusting joint is connected with the bottom of the inner upright post, and the bottom of the adjusting joint is connected with the hinged support.
9. The reversible middle leg of a bridge girder erection machine according to claim 8, wherein: the bottom of the adjusting joint is connected with the hinged support through a fine adjustment screw rod.
10. A bridge girder erection machine, comprising the middle support leg of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220312371.3U CN216864855U (en) | 2022-02-16 | 2022-02-16 | Turnover middle support leg of bridge girder erection machine and bridge girder erection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220312371.3U CN216864855U (en) | 2022-02-16 | 2022-02-16 | Turnover middle support leg of bridge girder erection machine and bridge girder erection machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216864855U true CN216864855U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220312371.3U Active CN216864855U (en) | 2022-02-16 | 2022-02-16 | Turnover middle support leg of bridge girder erection machine and bridge girder erection machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216864855U (en) |
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2022
- 2022-02-16 CN CN202220312371.3U patent/CN216864855U/en active Active
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