CN211895841U - Movable door type lifting frame - Google Patents
Movable door type lifting frame Download PDFInfo
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- CN211895841U CN211895841U CN201921353257.XU CN201921353257U CN211895841U CN 211895841 U CN211895841 U CN 211895841U CN 201921353257 U CN201921353257 U CN 201921353257U CN 211895841 U CN211895841 U CN 211895841U
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- beams
- steel pipe
- lifting frame
- pipe column
- rod
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Abstract
The utility model discloses a movable door type lifting frame, which comprises four top beams, wherein the four top beams are rectangular, four vertical column rods are arranged at the joints of the four top beams, two bottom beams are arranged at the bottoms of the four column rods and are parallel to each other, and rollers are arranged at the two ends of the two bottom beams; the top beam is provided with a top rod, and the top rod is provided with a hoisting mechanism. The utility model solves the problems of low work efficiency, multiple adjustment of the position of the lifting frame and the need of disassembling and transporting the lifting frame to the position of the next steel pipe column for re-assembling after the installation of a single steel pipe column in the traditional PBA construction method of the subway station steel pipe column; the construction period is long, and the labor input cost is high; slow progress and low efficiency.
Description
Technical Field
The utility model relates to a subway construction field particularly, relates to a portable gate-type hoisting frame.
Background
The steel pipe column is an important component for connecting an upper bearing structure and a lower foundation in a subway station, and the installation of the steel pipe column is an important construction link no matter an open cut method, a cover cut method or a PBA construction method is adopted. The PBA construction method is limited by the narrow space in the main guide hole in the installation process of the steel pipe column of the subway station, the construction operation surface is difficult to meet the construction requirement of large machinery, and the installation can only be carried out through a simple lifting device, so that the construction efficiency is difficult to lift.
The traditional steel pipe column installation method comprises the following steps: and (3) installing and fixing a lifting frame in the pilot tunnel by using steel pipes/square steel, conveying the steel pipe columns into the pilot tunnel, hoisting by using the lifting frame, disassembling the lifting frame after each steel pipe column is installed, and immediately transferring to the position of the next steel pipe column for assembling.
The traditional steel pipe column mounting method has the following defects: 1) the lifting frame needs to be disassembled and transported for many times; 2) the hoisting frame is difficult to fix after being installed; 3) the position of the lifting frame cannot be adjusted after the assembly; 4) the construction period is long.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a portable gate-type hoisting frame can solve above-mentioned problem.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
a movable door type lifting frame comprises four top beams, wherein the four top beams are rectangular, four vertical column rods are arranged at the joints of the four top beams, two bottom beams are arranged at the bottoms of the four column rods and are parallel to each other, and rollers are arranged at two ends of the two bottom beams; the top beam is provided with a top rod, and the top rod is provided with a hoisting mechanism.
Further, the hoisting mechanism is an electric hoist.
Furthermore, a vertical rod is arranged between the bottom beam and the corresponding top beam.
Furthermore, an inclined rod is arranged between the top beam and the post rod.
Furthermore, cross rods are arranged between every two adjacent posts, and the number of the cross rods is three.
Further, the length of the bottom beam is 4 m.
Further, the height of the pole is 3.8 m.
Further, the distance between the two bottom beams is 2.2 m.
The utility model has the advantages that: the utility model solves the problems of low work efficiency, multiple adjustment of the position of the hoisting frame and multiple disassembly and transportation of the hoisting frame after the installation of a single steel pipe column in the traditional subway station steel pipe column installation method; the construction period is long, and the labor input cost is high; slow progress and low efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a side view of a moveable door lift;
FIG. 2 is a front view of the movable door lift;
figure 3 is a top view of the moveable door lift.
In the figure: 1. the lifting device comprises a top beam, 2 column rods, 3 bottom beams, 4 rollers, 5 ejector rods, 6 lifting mechanisms, 7 vertical rods, 8 inclined rods and 9 transverse rods.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1, the movable door type lifting frame according to the embodiment of the present invention comprises four top beams 1, wherein four top beams 1 are rectangular, four vertical posts 2 are arranged at the joints of the four top beams 1, two bottom beams 3 are arranged at the bottoms of the four posts 2, the two bottom beams 3 are parallel to each other, and two ends of each of the two bottom beams 3 are provided with a roller 4; the top beam 1 is provided with a top rod 5, and the top rod 5 is provided with a hoisting mechanism 6.
In a specific embodiment of the present invention, the hoisting mechanism 6 is an electric hoist.
In a specific embodiment of the present invention, a vertical rod 7 is disposed between the bottom beam 3 and the corresponding top beam 1.
In a specific embodiment of the present invention, a diagonal bar 8 is disposed between the top beam 1 and the post 2.
In a specific embodiment of the present invention, cross bars 9 are disposed between adjacent posts 2, and the number of the cross bars 9 is three.
In a specific embodiment of the present invention, the length of the bottom beam 3 is 4 m.
In a specific embodiment of the present invention, the height of the mast 2 is 3.8 m.
In a specific embodiment of the present invention, the distance between two bottom beams 3 is 2.2 m.
For the convenience of understanding the above technical solutions of the present invention, the above technical solutions of the present invention are explained in detail through specific use modes below.
1. Structural design of lifting frame
According to the size of the steel pipe column, the inner clearance of the pilot tunnel and the design of the width, the height, the inner clearance and the section form of the movable door type lifting frame by considering the operation space of reserved personnel around the lifting frame in the installation process of the steel pipe column, the structural size of the lifting frame is finally determined to be 4m in length, 2.2m in width and 3.8m in height.
2. Calculation and material selection of bearing capacity of hoisting frame structure
And (4) according to the load of the steel pipe column and other loads, considering the influence of the factors such as unevenness of the ground on the stress of the lifting frame, carrying out structural bearing capacity calculation on the lifting frame, selecting materials for the lifting frame and determining the lifting weight of the electric hoist. The control is mainly as follows: firstly, selecting a top beam 1 square steel model according to a method for calculating the maximum deflection of the top beam under the action of a load by using a section characteristic and a mechanical model; secondly, selecting the type of the square steel of the column rod 2 according to the method for calculating the structural stability coefficient and the axial center compressive strength of the vertical rod according to the cross section characteristics of the vertical rod and a mechanical model; and thirdly, determining the section area of the wheel shaft by calculating the shearing strength of the wheel shaft so as to select the type of the wheel shaft. And fourthly, finally determining that the material selection of the top beam and the upright of the lifting frame is Q235 less than 100 square steel through calculation, and the wheel axle is a prefabricated axle with the diameter of 300 mm.
3. Manufacturing and trial run of hoisting frame
The lifting frame is manufactured according to a lifting frame design drawing, the models and the sizes of all parts are guaranteed, and the welding quality of all welding nodes is guaranteed. And performing trial operation after the installation of the hoisting frame is finished, wherein the weight of the hoisting frame in the trial operation is not less than 1.1 times of the weight of the whole steel pipe column, and the moving distance is not less than one steel pipe column span. After the test operation is qualified, the steel pipe can be transferred to a construction position.
4. Steel pipe column installation
Putting a steel pipe in place: when the movable door type lifting frame is lifted, the lifting point of the movable door type lifting frame is close to the center of the steel pipe column, and impurities around the lifting point are cleaned, so that the mounting joint surface of the steel pipe column is prevented from being damaged by the impurities. Secondly, hoisting and overturning: the movable door type lifting frame is required to be moved at any time in the overturning process, so that the lifting point of the movable door type lifting frame is close to the center of the steel pipe column, and when the movable door type lifting frame is close to the vertical position, the four-wheel wedge of the mounting frame is required to be dead, and the mounting frame is prevented from being driven to be unstable when the steel pipe column swings. Thirdly, hanging the steel pipe column into the hole by using a special fixture: when in hoisting, after every section is hoisted, the installed steel pipe is erected on the top plane of the steel pipe column protecting wall by using a 'well' -shaped support, the fixture is made into a 'well' -shaped support by adopting I22a I-steel, the ground is guaranteed to be flat and tamped when the fixture is placed, and the steel pipe column is prevented from deflecting after the hook is removed. Hoisting the upper section of steel pipe: when the bolt is threaded, the bolt cannot be forcibly hammered in by a hammer, and only can be inserted after being aligned by a crowbar or a punching nail. After penetrating, a bolt is sleeved with a flat pad, a mounting hole is penetrated from bottom to top, the flat pad and a nut are sleeved, the nut is symmetrically screwed by a fixed torque wrench, and the screw torque reaches 390N.m by spot check 1/10. During construction, the screws are screwed down one by one according to symmetrical positions by using a fixed torque wrench, and the position marks of the nuts are coated by using paint. The 10% screw is spot-checked by using a torque measuring wrench, during checking, the nut is reversely screwed for 60 degrees, and then the nut is positively screwed to a mark, so that a torque reading is measured. The reading should pass in the 390+20 N.M range. Connecting the sections of steel pipe columns one by one until the whole steel pipe column is combined: when the combined type vertical welding line is combined, the combined type vertical welding line is tightly connected with a first section of flange through high-strength bolts, and meanwhile, the vertical welding lines cannot be aligned on one line and should be staggered by more than 90 degrees. Sixthly, hoisting the steel pipe column and connecting the steel pipe column with the embedded screws on the bottom longitudinal beam: when the bolt is threaded, the bolt cannot be forcibly hammered in by a hammer, and only can be aligned by a crowbar and then threaded. After penetrating, a flat pad and a nut are sleeved on the rear sleeve, the nut is symmetrically tightened by a fixed-torque wrench, and the screw torque reaches 390N.m by spot check 1/10. For the situation that the screw thread is damaged unintentionally, the screw die is used for screwing, and the nut can be screwed down after being sleeved into the bolt smoothly.
5. Transfer of hoisting frame
And transferring the lifting frame to the next steel pipe column construction position through the pulley block, and repeating the steps to install the next steel pipe column.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A movable door type lifting frame comprises four top beams (1), and is characterized in that the four top beams (1) are rectangular, four vertical posts (2) are arranged at the joints of the four top beams (1), two bottom beams (3) are arranged at the bottoms of the four posts (2), the two bottom beams (3) are parallel to each other, and rollers (4) are arranged at the two ends of the two bottom beams (3); a top rod (5) is arranged on the top beam (1), and a hoisting mechanism (6) is arranged on the top rod (5); a vertical rod (7) is arranged between the bottom beam (3) and the corresponding top beam (1).
2. The movable gantry lift of claim 1, wherein: the hoisting mechanism (6) is an electric hoist.
3. The movable gantry lift of claim 1, wherein: an inclined rod (8) is arranged between the top beam (1) and the post rod (2).
4. The movable gantry lift of claim 1, wherein: cross rods (9) are arranged between the adjacent post rods (2), and the number of the cross rods (9) is three.
5. The movable gantry lift of claim 1, wherein: the length of the bottom beam (3) is 4 m.
6. The movable gantry lift of claim 1, wherein: the height of the pole (2) is 3.8 m.
7. The movable gantry lift of claim 1, wherein: the distance between the two bottom beams (3) is 2.2 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921353257.XU CN211895841U (en) | 2019-08-20 | 2019-08-20 | Movable door type lifting frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921353257.XU CN211895841U (en) | 2019-08-20 | 2019-08-20 | Movable door type lifting frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211895841U true CN211895841U (en) | 2020-11-10 |
Family
ID=73282291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921353257.XU Active CN211895841U (en) | 2019-08-20 | 2019-08-20 | Movable door type lifting frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211895841U (en) |
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2019
- 2019-08-20 CN CN201921353257.XU patent/CN211895841U/en active Active
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