Balanced steel beam with adjustable hanging points

Abstract

The present application discloses a balanced steel beam with adjustable lifting points, which relates to the field of building construction technology, and includes a main beam connected to the main lifting rope of a tower crane, a mobile lifting point assembly slidably connected to the main beam, and a driving assembly connected to the main beam and used to drive the mobile lifting point assembly to slide along the length direction of the main beam; the mobile lifting point assembly includes a connecting lifting rope for connecting and lifting prefabricated components. The present application has the effect of reducing the safety hazards of prefabricated building lifting construction and improving the lifting efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a balanced steel beam with adjustable hanging points. Background Art

[0002] Prefabricated building is the abbreviation of prefabricated concrete structure building, which is a concrete structure building with prefabricated components as the main load-bearing components and connected by assembly. Prefabricated building is one of the important directions of the development of building structure in my country. With its factory-based production characteristics and intensive construction mode, it greatly reduces the construction period in construction applications and the huge labor resources required for cast-in-place structures, which is conducive to the development of my country's building industrialization.

[0003] When installing prefabricated components, it is usually necessary to use a tower crane to lift the prefabricated components and transport them to the corresponding installation location. Generally, the lifting rope of the tower crane has only one connection point when connecting the prefabricated components, and the structural dimensions of the prefabricated components are different, and the positions of the embedded lifting points are also different. The connection between the lifting rope and the embedded lifting point cannot be adapted and converted, which can easily cause the prefabricated components to shake during lifting and transportation, creating a safety hazard for lifting. Summary of the invention

[0004] In order to improve the problem that when a tower crane is lifting prefabricated components, the connection between the lifting rope and the embedded lifting point cannot be adapted and converted, thereby posing a safety hazard after lifting, the present application provides a balancing steel beam with adjustable lifting points.

[0005] The present application provides a balanced steel beam with adjustable suspension points, which adopts the following technical solution:

[0006] A balanced steel beam with adjustable lifting points comprises a main beam connected to a main lifting rope of a tower crane, a mobile lifting point assembly slidably connected to the main beam, and a driving assembly connected to the main beam and used to drive the mobile lifting point assembly to slide along the length direction of the main beam; the mobile lifting point assembly comprises a connecting lifting rope for connecting to lift prefabricated components.

[0007] By adopting the above technical solution, the main beam is connected to the main lifting rope of the tower crane, and the driving assembly drives the mobile lifting point assembly to slide on the main beam, so that the lifting point position of the tower crane corresponds to the position of the embedded lifting point on the prefabricated component. The connecting lifting rope is always in a vertical state during the lifting process and is not affected by the horizontal force component. The connecting lifting rope can fully withstand the gravity of the prefabricated component, thereby improving the tensile strength utilization of the stressed connecting lifting rope and reducing the safety hazards of lifting construction.

[0008] Optionally, the driving assembly includes a first mounting seat and a second mounting seat fixedly connected to the main beam, a screw pair rotatably connected between the first mounting seat and the second mounting seat and connected to the movable suspension point assembly, a worm wheel fixedly connected to one end of the screw pair, a worm meshing with the worm wheel, and a power unit for driving the worm wheel to rotate.

[0009] By adopting the above technical solution, the power unit drives the worm to rotate, and the worm drives the mobile lifting point assembly to move and adjust along the length direction of the main beam through the transmission of the worm wheel and the screw pair. The driving assembly has a simple structure and reliable operation, which facilitates the adjustment of the connecting lifting rope to the position corresponding to the embedded lifting point on the prefabricated component, improves the construction efficiency, and speeds up the lifting speed.

[0010] Optionally, the power unit includes a wheel fixedly connected to one end of the worm gear, a connecting rod eccentrically fixed to the wheel, and a power chamber fixed to the main beam, the power chamber is provided with an annular groove, the connecting rod is inserted into the annular groove for sliding, the axis of the annular groove coincides with the axis of the worm gear, an outer spiral groove is provided on the outer wall of the annular groove, an inner spiral groove is provided on the inner wall of the annular groove, an air column is embedded in the outer spiral groove, one end of the air column is fixedly connected to a first slider, the first slider is slidably connected to the connecting rod; the other end of the air column is connected to a two-way air pump; an elastic rope is embedded in the inner spiral groove, one end of the elastic rope is slidably connected to the connecting rod.

[0011] By adopting the above technical scheme, when it is necessary to adjust the position of the connecting rope, the two-way air pump inflates the air column, and the air column expands along the rotation direction of the outer spiral groove and pushes the connecting rod. The connecting rod slides and rotates in the annular groove, causing the rotating wheel and the worm to rotate, thereby driving the connecting rope to move and adjust; when the connecting rod slides and rotates, it drives the elastic rope to lengthen, and the elastic rope is always embedded in the inner spiral groove, and generates a reverse pulling force on the connecting rod; when the connecting rope is adjusted to a suitable position, the air column no longer continues to expand, and the connecting rod reaches a balanced static state under the thrust of the air column and the tension of the elastic rope, so that the rotating wheel is in a locked state, thereby avoiding the rotating wheel rotation due to the inertia of the prefabricated components during transportation, and the prefabricated components shaking and unstable during the lifting process, thereby improving the safety and stability of the lifting.

[0012] Optionally, the mobile lifting point assembly includes a traveling trolley slidably connected to the main beam and a lifting point beam fixedly connected to the traveling trolley, and one end of the connecting lifting rope is fixedly connected to the lifting point beam.

[0013] By adopting the above technical solution, the walking trolley slides on the main beam, driving the connecting lifting rope to adjust its position. The setting of the lifting point beam strengthens the strength of the structure and improves the reliability of lifting. The mobile lifting point assembly has a simple structure and is easy to operate, which reduces the safety hazards of lifting construction.

[0014] Optionally, the main beam includes a steel plate connected to a main lifting rope of the tower crane and channel steels welded to both sides of the steel plate.

[0015] By adopting the above technical solution, the welding combination of steel plates and channel steels strengthens the structural strength of the balance steel beam itself, ensures the safety and stability of the lifting construction, and under the premise of meeting the tensile strength, the steel plates and channel steels are easy to obtain and convenient to process and manufacture.

[0016] Optionally, a connection hole group is opened on the upper side of the steel plate, and the first auxiliary lifting rope and the second auxiliary lifting rope are respectively connected to the through holes corresponding to the connection hole group, and the other ends of the first auxiliary lifting rope and the second auxiliary lifting rope are both fixedly connected to the lower end of the main lifting rope of the tower crane; the first auxiliary lifting rope and the second auxiliary lifting rope are arranged obliquely and symmetrically relative to the center point of the main beam.

[0017] By adopting the above technical solution, the first auxiliary lifting rope and the second auxiliary lifting rope are symmetrically arranged relative to the center point of the main beam, and are fixedly connected to the connection hole groups at two locations of the steel beam, thereby optimizing the force form of the lifting and improving the stability of the lifting.

[0018] Optionally, the connection hole group includes a plurality of through holes distributed in an array along the length direction of the main beam.

[0019] By adopting the above technical solution, the through holes of several connection hole groups are regularly distributed along the length direction of the main beam, so that the first and second lifting ropes can be adjusted to the corresponding spacing according to the different structural shapes of the prefabricated components to be hoisted, and the positions are reasonably distributed and arranged to improve the stability and strength of the hoisting.

[0020] Optionally, scale values ​​are provided on the main beam, and an observation plate is provided on the movable hanging point assembly.

[0021] By adopting the above technical solution, the scale value is set on the main beam, and the observation plate on the mobile lifting point assembly is set corresponding to the scale value, which is convenient for the operator to observe the moving position of the connecting lifting rope, ensure the matching of the lifting position of the balance steel beam and the embedded lifting point spacing of the prefabricated component, improve stability and ensure safe lifting.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By setting the main beam, mobile lifting point assembly and driving assembly, the lifting point position of the tower crane is matched with the position of the embedded lifting point on the prefabricated component. The connecting rope is always in a vertical state during the lifting process and is not affected by the horizontal force component. The connecting rope can fully bear the gravity of the prefabricated component, improves the tensile strength utilization of the load-bearing connecting rope, and reduces the safety hazards of lifting construction.

[0024] 2. By setting the connecting rod, power chamber, air column and elastic rope, when adjustment is needed, the connecting rod, pushed by the air column, drives the mobile lifting point assembly to shift and adjust. After adjusting to the appropriate position, the connecting rod reaches a balanced static state under the thrust of the air column and the tension of the elastic rope, so that the turntable is in a locked state, avoiding the rotation of the turntable due to the inertia of the prefabricated components during transportation, resulting in the prefabricated components shaking and being unstable during the lifting process, thereby further improving the safety and stability of the lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 2 is a schematic diagram of the structure of a balanced steel beam with adjustable suspension points in an embodiment of the present application;

[0026] Figure 2 is a structural cross-sectional view of a balanced steel beam with adjustable suspension points in an embodiment of the present application;

[0027] Figure 3 It is a structural schematic diagram of the power unit in the embodiment of the present application.

[0028] Description of reference numerals: 1, main beam; 11, steel plate; 111, connection hole group; 12, channel steel; 121, scale value; 2, mobile suspension point assembly; 21, walking trolley; 211, driving rubber wheel; 212, observation plate; 22, suspension point beam; 23, connecting suspension rope; 3, driving assembly; 31, first mounting seat; 32, second mounting seat; 33, screw pair; 34, worm gear; 35, worm; 36, moving Force unit; 361, rotating wheel; 362, connecting rod; 3621, first slide groove; 3622, second slide groove; 363, power chamber; 3631, annular slide groove; 3632, outer spiral groove; 3633, inner spiral groove; 364, air column; 365, two-way air pump; 366, first slider; 367, elastic rope; 368, second slider; 4, main lifting rope; 5, first auxiliary lifting rope; 6, second auxiliary lifting rope. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The present application embodiment discloses a balanced steel beam with adjustable suspension points. Figure 1 , including a main beam 1, a mobile lifting point assembly 2 and a driving assembly 3. The main beam 1 is connected to the main lifting rope 4 of the tower crane. The mobile lifting point assembly 2 is slidably connected to the main beam 1 and is used to adjust the position of the lifting point to correspond to the position of the embedded lifting point on the prefabricated component. The driving assembly 3 is installed on the main beam 1 and is used to drive the mobile lifting point assembly 2 to slide along the length direction of the main beam 1.

[0031] The main beam 1 includes a steel plate 11 and a channel steel 12. The steel plate 11 is a long strip structure. Two channel steels 12 are provided, and the two channel steels 12 are butt-welded to both sides of the steel plate 11 to provide a high structural strength installation force foundation. A connection hole group 111 is opened on the upper side of the steel plate 11. The connection hole group 111 is a plurality of through holes distributed in an array along the length direction of the steel plate 11.

[0032] The first auxiliary lifting rope 5 and the second auxiliary lifting rope 6 are respectively fixed to two through holes of the connection hole group 111, and the other ends of the first auxiliary lifting rope 5 and the second auxiliary lifting rope 6 are fixed to the lower end of the main lifting rope 4 of the tower crane. The first auxiliary lifting rope 5 and the second auxiliary lifting rope 6 are arranged obliquely and symmetrically distributed relative to the center of the main beam 1. The position of the connection point of the connection hole group 111 of the first auxiliary lifting rope 5, the second auxiliary lifting rope 6 and the main beam 1 can be adaptively adjusted according to the different shapes and structures of the corresponding prefabricated components, so as to reasonably distribute the spacing between the first auxiliary lifting rope 5 and the second auxiliary lifting rope 6 and optimize the lifting force form.

[0033] The mobile lifting point assembly 2 includes a traveling trolley 21, which is a frame welded part of a steel structure. The traveling trolley 21 is provided with traveling rubber wheels 211, which are respectively rollingly connected to the upper surfaces of the channel steels 12 on both sides, so that the traveling trolley 21 can stably perform linear reciprocating motion along the length direction of the main beam 1.

[0034] A suspension beam 22 is fixedly provided at the lower end of the traveling trolley 21. The suspension beam 22 is an I-beam structure and is welded to the traveling trolley 21. A connecting rope 23 is fixedly connected to the suspension beam 22. The connecting rope 23 hangs naturally and is vertically arranged. The end of the connecting rope 23 away from the suspension beam 22 is used to connect with the embedded suspension point of the prefabricated component for lifting. Two groups of mobile suspension point assemblies 2 are provided, and the two groups of mobile suspension point assemblies 2 are symmetrically distributed relative to the central axis of the main beam 1 to achieve left and right force balance of the main beam 1. The two groups of mobile suspension point assemblies 2 are driven to shift by two groups of driving assemblies 3 respectively.

[0035] Reference Figure 1 and Figure 2 The driving assembly 3 includes a first mounting seat 31 and a second mounting seat 32, both of which are fixedly connected to the main beam 1, and a lead screw pair 33 is rotatably connected between the first mounting seat 31 and the second mounting seat 32, and a nut seat on the lead screw pair 33 is fixedly connected to the traveling trolley 21. A cavity is provided inside the first mounting seat 31, one end of the lead screw pair 33 extends into the first mounting seat 31, and a worm wheel 34 is fixedly connected to the end extending into the first mounting seat 31, and a worm 35 is drivingly engaged with the worm wheel 34, and one end of the worm 35 extends out of the first mounting seat 31, and the end extending out of the first mounting seat 31 is drivingly connected to a power unit 36.

[0036] The power unit 36 ​​includes a rotating wheel 361, which is fixed to one end of the worm 35 extending out of the first mounting seat 31. A connecting rod 362 is eccentrically arranged on the rotating wheel 361, and the connecting rod 362 is inserted into a power cavity 363 on one side. The rotating wheel 361 is centrally provided with an external boss and is rotatably connected to the power cavity 363. The power cavity 363 is fixed to the main beam 1, and an annular groove 3631 is provided on the power cavity 363, the axis of which coincides with the axis of the worm 35, and the connecting rod 362 is inserted into the annular groove 3631 to slide and rotate, thereby driving the worm 35 to rotate.

[0037] Reference Figure 2 and Figure 3 , an outer spiral groove 3632 is provided on the outer side wall of the annular slide groove 3631, and an air column 364 is embedded in the outer spiral groove 3632. One end of the air column 364 is connected to a two-way air pump 365, and the two-way air pump 365 is fixedly connected to the main beam 1. After being inflated by the two-way air pump 365, the air column 364 will rotate along the spiral direction of the outer spiral groove 3632; the other end of the air column 364 is fixedly connected to a first slider 366, and the first slider 366 extends to the outside of the outer spiral groove 3632. A first slide groove 3621 is opened on the connecting rod 362 along its own axial direction, and the first slider 366 is slidably connected in the first slide groove 3621. When the air column 364 performs a circling motion in the outer spiral groove 3632, the first slider 366 is correspondingly slidably connected in the first slide groove 3621, and at the same time pushes the connecting rod 362 to slide and rotate along the annular slide groove 3631.

[0038] An inner spiral groove 3633 is provided on the inner wall of the annular groove 3631, and an elastic rope 367 is embedded in the inner spiral groove 3633. One end of the elastic rope 367 is fixedly connected to the second slider 368. The connecting rod 362 is provided with a second groove 3622 along the axial direction. The second slider 368 is embedded in the second groove 3622 for sliding connection. When the connecting rod 362 is pushed to move by the gas column 364, the elastic rope 367 is pulled by the second slider 368 for stretching. The elastic rope 367 is always embedded in the inner spiral groove 3633 and generates a reverse pulling force on the connecting rod 362.

[0039] The two-way air pump 365 inflates the air column 364, which spirals and expands in the outer spiral groove 3632, pushing the connecting rod 362 to slide and rotate in the annular groove 3631, and the connecting rod 362 drives the rotating wheel 361 to rotate, thereby driving the walking trolley 21 to slide along the length direction of the main beam 1 through the transmission of the worm 35, the worm wheel 34 and the screw pair 33, and adjusting the connecting rope 23 to the position of the embedded hanging point on the corresponding prefabricated component.

[0040] When the connecting rope 23 is adjusted to a suitable position, the two-way air pump 365 stops inflating the air column 364, and the connecting rod 362 is in a balanced static state under the thrust of the air column 364 and the tension of the elastic rope 367 in the opposite direction, so that the rotating wheel 361 is in a locked state, avoiding the loosening and rotation of the rotating wheel 361 due to the inertia force during the transportation of prefabricated components, thereby improving the safety and stability of the lifting.

[0041] When the walking trolley 21 needs to move in the opposite direction to adjust its position, the two-way air pump 365 exhausts the air column 364, the thrust of the air column 364 on the connecting rod 362 is reduced, and the elastic rope 367 pulls the connecting rod 362, causing the connecting rod 362 to slide and rotate in the annular groove 3631, thereby driving the screw pair 33 to reverse through the rotating wheel 361, causing the walking trolley 21 to slide in the opposite direction and adjust the connecting rope 23 to a suitable position.

[0042] Reference Figure 1 The channel steel 12 of the main beam 1 is provided with a scale value 121, and the scale value 121 is arranged along the length direction of the main beam 1. The walking trolley 21 is provided with an extended observation plate 212, and the observation plate 212 is extended to a position close to the scale value 121. As the walking trolley 21 slides, the corresponding position of the observation plate 212 and the scale value 121 on the main beam 1 is also gradually changed, which is convenient for the operator to locate the position of the connecting rope 23.

[0043] The implementation principle of the embodiment of the present application is as follows: when it is necessary to lift the prefabricated component, the tower crane lifts the balance steel beam to the top of the prefabricated component, measures the spacing of the pre-buried lifting points on the prefabricated component, controls the two-way air pump 365 to inflate the air column 364, and drives the walking trolley 21 to adjust the connecting rope 23 to a position directly opposite the pre-buried lifting point to ensure the vertical lifting of the connecting rope 23. The walking trolleys 21 at both ends of the main beam 1 maintain synchronous adjustment, and observe the corresponding positions of the observation plates 212 on the two sets of mobile lifting point assemblies 2 and the scale values ​​121 on the main beam 1, so that the two sets of mobile lifting point assemblies 2 are always guaranteed to be in a symmetrical position, and then one end of the connecting rope 23 is stably fixed to the pre-buried lifting point, and the tower crane performs lifting and lifting.

[0044] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A balanced steel beam with adjustable suspension points, characterized in that: A main beam (1) connected to a main lifting rope (4) of a tower crane, a mobile lifting point assembly (2) slidably connected to the main beam (1), and a driving assembly (3) connected to the main beam (1) and used to drive the mobile lifting point assembly (2) to slide along the length direction of the main beam (1); the mobile lifting point assembly (2) includes a connecting lifting rope (23) used to connect and lift prefabricated components; The driving assembly (3) comprises a first mounting seat (31) and a second mounting seat (32) fixedly connected to the main beam (1), a lead screw pair (33) rotatably connected between the first mounting seat (31) and the second mounting seat (32) and connected to the movable suspension point assembly (2), a worm wheel (34) fixedly connected to one end of the lead screw pair (33), a worm (35) meshing with the worm wheel (34) for transmission, and a power unit (36) for driving the worm (35) to rotate; The power unit (36) comprises a rotating wheel (361) fixedly connected to one end of the worm (35), a connecting rod (362) eccentrically fixedly connected to the rotating wheel (361), and a power chamber (363) fixedly connected to the main beam (1); an annular sliding groove (3631) is provided on the power chamber (363); the connecting rod (362) is inserted into the annular sliding groove (3631) for sliding; the axis of the annular sliding groove (3631) coincides with the axis of the worm (35); an outer spiral groove (3632) is provided on the outer side wall of the annular sliding groove (3631); An inner spiral groove (3633) is provided on the inner side wall of the annular sliding groove (3631); an air column (364) is embedded in the outer spiral groove (3632); one end of the air column (364) is fixedly connected to a first slider (366); the first slider (366) is slidably connected to the connecting rod (362); the other end of the air column (364) is connected to a two-way air pump (365); an elastic rope (367) is embedded in the inner spiral groove (3633); one end of the elastic rope (367) is slidably connected to the connecting rod (362); The movable suspension point assembly (2) comprises a trolley (21) slidably connected to the main beam (1) and a suspension point beam (22) fixedly connected to the trolley (21), and one end of the connecting suspension rope (23) is fixedly connected to the suspension point beam (22); The main beam (1) comprises a steel plate (11) connected to a main hoisting rope (4) of a tower crane, and channel steels (12) welded to both sides of the steel plate (11); A connection hole group (111) is provided on the upper side of the steel plate (11), and a first auxiliary lifting rope (5) and a second auxiliary lifting rope (6) are respectively connected to the through holes corresponding to the connection hole group (111), and the other ends of the first auxiliary lifting rope (5) and the second auxiliary lifting rope (6) are both fixedly connected to the lower end of the main lifting rope (4) of the tower crane; the first auxiliary lifting rope (5) and the second auxiliary lifting rope (6) are arranged obliquely and are symmetrically arranged relative to the center point of the main beam (1).

2. The balanced steel beam with adjustable suspension points according to claim 1, characterized in that: The connection hole group (111) comprises a plurality of through holes distributed in an array along the length direction of the main beam (1).

3. The balanced steel beam with adjustable suspension points according to claim 1, characterized in that: The main beam (1) is provided with a scale value (121), and the movable suspension point assembly (2) is provided with an observation plate (212).

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