Hoisting equipment for beam construction of prefabricated box beam

Abstract

The invention relates to the technical field of hoisting equipment, in particular to hoisting equipment for prefabricated box beam frame beam construction, which comprises a bridge girder erection machine, the bridge girder erection machine comprises a support assembly, a main beam is arranged on the support assembly, a crown block cross beam is arranged on the main beam, a pulley block and a crown block are arranged on the crown block cross beam, and a winch is arranged on the crown block. A first steel wire rope is arranged on the winch, is wound on the pulley block and is connected with a hanging beam carrying pole through the pulley block. The hoisting device has the beneficial effects that when the prefabricated box girder is hoisted, the shaking amplitude generated when the prefabricated box girder is converted from a static state to a moving state at the hoisting moment is reduced, the stability of the prefabricated box girder at the hoisting moment is improved, and in the hoisting process of the prefabricated box girder, the hoisting efficiency is improved through the self-locking effect of transmission between the worm gear and the worm. And after the prefabricated box girder is hoisted, the stability of the prefabricated box girder in the hoisting process is further improved through the gravity of the prefabricated box girder.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment, and in particular to hoisting equipment for prefabricated box girder erection construction. Background Art

[0002] Box girder is a type of beam in bridge engineering. It is hollow inside and has flanges on both sides of the upper part, similar to a box, hence its name. In order to speed up the construction progress and ensure the efficiency of construction, the use of prefabricated box girders for bridge construction has become a relatively mature construction plan. During construction, prefabricated box girders are directly transported to the construction site by beam transporters and then hoisted to the designated bridge piers by bridge erection machines.

[0003] A lifting device for steel box girder bridge construction disclosed in Chinese patent CN118458567A includes an assembly box, which is arranged on the top of the steel box girder bridge. Positioning components for stabilizing the four corners of the steel box girder bridge are arranged around the bottom of the assembly box. A support component for fixing and supporting the steel box girder bridge is arranged at the bottom of the assembly box. A driving member for driving the support component to move is installed in the assembly box. The support component is sleeved on the surface of the steel box girder bridge. A pull ring is fixedly connected to the top of the assembly box, and a hook for connecting an external crane is sleeved in the pull ring.

[0004] However, compared with the existing technology and the comparative scheme, it can be seen that the hoisting equipment still has the following problems in actual use:

[0005] During the lifting of the prefabricated box girder, the change in position will cause the prefabricated box girder to generate inertia. When it reaches the unloading position, the lifting equipment stops moving. The inertia of the prefabricated box girder will cause the hoisted prefabricated box girder to shake, driving the wire rope for hoisting the prefabricated box girder to swing. Since the distance between the wire rope and the prefabricated box girder is fixed during the lifting process, during the shaking of the wire rope, the two ends of the hoisted prefabricated box girder will fluctuate with the swing of the wire rope, causing the prefabricated box girder to tilt and slide to the side with a lower horizontal height, affecting the stability of the prefabricated box girder lifting. Summary of the invention

[0006] The present invention provides a hoisting device for prefabricated box beam erection construction to solve the above technical problems.

[0007] The invention discloses a hoisting device for prefabricated box beam erection construction, which adopts the following technical scheme: comprising a bridge erection machine, the bridge erection machine comprising a support assembly, a main beam is arranged on the support assembly, a crane cross beam is arranged on the main beam, a pulley block and a crane are arranged on the crane cross beam, a winch is arranged on the crane, a first steel wire rope is arranged on the winch, the first steel wire rope is wound on the pulley block, and the first steel wire rope is connected to a beam hanging pole through the pulley block;

[0008] The hanging beam shoulder pole is provided with a second steel wire rope and a third steel wire rope, the end of the second steel wire rope away from the hanging beam shoulder pole is provided with a connecting frame, and the end of the third steel wire rope away from the hanging beam shoulder pole is provided with a connecting frame;

[0009] A worm and a worm wheel are arranged on the connecting frame, and the worm wheel is drivingly connected to the worm. There are multiple worm wheels, which are distributed in a circular array on the connecting frame.

[0010] An adjusting wheel is arranged at one end of the worm, a limit plate is arranged at the end of the worm away from the adjusting wheel, a rotating member is arranged at the end of the worm close to the adjusting wheel, and a second connecting ring is arranged on the rotating member;

[0011] The worm wheel is provided with a rotating shaft and an outer support rod, one end of the outer support rod away from the worm wheel is rotatably connected with a connecting piece, and the connecting piece is rotatably connected with a third contact piece.

[0012] Furthermore, a first connecting ring is provided on the connecting frame, and the end of the second steel wire rope away from the lifting beam shoulder pole is connected to the first connecting ring. A first screw is provided on the connecting frame, a first adjusting head is provided at one end of the first screw, and a first contact piece is provided at the end of the first screw away from the first adjusting head.

[0013] Furthermore, a guide wheel for steering the third steel wire rope is provided on the connecting frame, a connecting hole is opened on the connecting frame, a second screw is provided on the connecting frame, a second adjusting head is provided at one end of the second screw, and a second contact piece is provided at the end of the second screw away from the second adjusting head.

[0014] Furthermore, there are multiple second steel wire ropes, which are symmetrically distributed on the hanging beam pole, and there are two third steel wire ropes, which are symmetrically distributed at both ends of the hanging beam pole.

[0015] Furthermore, the connecting hole is adapted to the worm, and the worm is threadedly connected to the connecting frame through the connecting hole.

[0016] Furthermore, one end of the third steel wire rope away from the hanging beam shoulder pole is connected to the second connecting ring.

[0017] Furthermore, the worm gear is rotatably connected to the connecting frame via a rotating shaft.

[0018] Furthermore, the rotation axis of the third contact member and the rotation axis of the connecting member are perpendicular to each other.

[0019] Furthermore, the number of the support assemblies is two, which are symmetrically distributed at both ends of the main beam.

[0020] Furthermore, a first track is arranged at the bottom of the supporting assembly, a middle support assembly is arranged at the middle of the main beam, a second track is arranged at the bottom of the middle support assembly, and a temporary support leg is arranged at the bottom of the main beam.

[0021] The beneficial effects of the present invention are as follows: when the prefabricated box girder is hoisted, the shaking amplitude generated when the prefabricated box girder is changed from a static state to a moving state at the moment of hoisting is reduced, thereby improving the stability of the prefabricated box girder at the moment of hoisting; in the process of hoisting the prefabricated box girder, through the self-locking effect of the transmission between the worm gear and the worm gear, after the prefabricated box girder is hoisted, through the self-gravity of the prefabricated box girder, the stability of the prefabricated box girder during the hoisting process is further improved, and it is avoided that when the two ends of the hoisted prefabricated box girder rise and fall with the swing of the wire rope, the prefabricated box girder tilts and slides to the side with a lower horizontal height; at the same time, during the hoisting process, the second wire rope and the connecting frame assist the third wire rope and the connecting frame to fix the prefabricated box girder, thereby further ensuring the stability of the prefabricated box girder during the hoisting process.

[0022] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a front view structural schematic diagram of an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of a top view of the structure of an embodiment of the present invention;

[0026] Figure 3 It is a side structural schematic diagram of an embodiment of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the working state of the hanging beam shoulder pole of an embodiment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the carrying pole of the hanging beam of an embodiment of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the connection frame of an embodiment of the present invention;

[0030] Figure 7 It is a structural schematic diagram of a connecting frame in a first state according to an embodiment of the present invention;

[0031] Figure 8 It is a structural schematic diagram of a connecting frame in a second state from a first viewing angle according to an embodiment of the present invention;

[0032] Fig. 9It is a structural schematic diagram of a connecting frame in a second state and a second viewing angle according to an embodiment of the present invention;

[0033] Fig.10 It is a structural schematic diagram of a connecting frame according to an embodiment of the present invention;

[0034] Fig.11 It is a schematic structural diagram of a worm gear according to an embodiment of the present invention;

[0035] Fig.12 It is a schematic structural diagram of a worm gear according to an embodiment of the present invention.

[0036] In the figure: 1, support assembly; 2, main beam; 3, overhead crane beam; 4, pulley block; 5, overhead crane; 6, winch; 7, first wire rope; 8, hanging beam shoulder pole; 81, second wire rope; 82, third wire rope; 83, connecting frame; 831, first connecting ring; 832, first screw rod; 833, first adjusting head; 834, first contact piece; 84, connecting frame; 841, guide wheel; 842, connecting hole ; 843, second screw; 844, second adjusting head; 845, second contact piece; 85, worm; 851, adjusting wheel; 852, limit plate; 853, rotating piece; 854, second connecting ring; 86, worm wheel; 861, rotating shaft; 862, outer support rod; 863, connecting piece; 864, third contact piece; 9, first track; 10, middle support assembly; 11, second track; 12, temporary support leg. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] An embodiment of a hoisting device for prefabricated box beam erection construction of the present invention is as follows Figures 1 to 3 As shown, it includes a bridge erecting machine, which includes a supporting assembly 1, on which a main beam 2 is arranged, the number of the supporting assemblies 1 is two, and they are symmetrically distributed at both ends of the main beam 2, a crane crossbeam 3 is arranged on the main beam 2, a pulley block 4 and a crane 5 are arranged on the crane crossbeam 3, a winch 6 is arranged on the crane 5, a first steel wire rope 7 is arranged on the winch 6, the first steel wire rope 7 is wound around the pulley block 4, and the first steel wire rope 7 is connected to a hanging beam shoulder pole 8 through the pulley block 4, a first track 9 is arranged at the bottom of the supporting assembly 1, a middle support assembly 10 is arranged in the middle of the main beam 2, a second track 11 is arranged at the bottom of the middle support assembly 10, and a temporary support leg 12 is arranged at the bottom of the main beam 2.

[0039] like Figures 4 to 5As shown, a second steel wire rope 81 and a third steel wire rope 82 are provided on the hanging beam shoulder pole 8. There are multiple second steel wire ropes 81 which are symmetrically distributed on the hanging beam shoulder pole 8. There are two third steel wire ropes 82 which are symmetrically distributed at both ends of the hanging beam shoulder pole 8. A connecting frame 83 is provided at the end of the second steel wire rope 81 away from the hanging beam shoulder pole 8, and a connecting frame 84 is provided at the end of the third steel wire rope 82 away from the hanging beam shoulder pole 8.

[0040] like Figures 5 and 6 As shown, a first connecting ring 831 is provided on the connecting frame 83, and the end of the second steel wire rope 81 away from the lifting beam shoulder pole 8 is connected to the first connecting ring 831, a first screw 832 is provided on the connecting frame 83, a first adjusting head 833 is provided at one end of the first screw 832, and a first contact piece 834 is provided at the end of the first screw 832 away from the first adjusting head 833.

[0041] like Figures 7 to 9 As shown, a worm 85 and a worm wheel 86 are provided on the connecting frame 84, and the worm wheel 86 is drivingly connected to the worm 85. There are multiple worm wheels 86, which are distributed in a circular array on the connecting frame 84 (in this embodiment, there are three worm wheels 86, but the number is not limited, and the specific number of worm wheels 86 can be adjusted according to prefabricated box girders of different specifications).

[0042] like Fig.10 As shown, the connecting frame 84 is provided with a guide wheel 841 for steering the third steel wire rope 82, the connecting frame 84 is provided with a connecting hole 842, the connecting frame 84 is provided with a second screw 843, one end of the second screw 843 is provided with a second adjusting head 844, and the end of the second screw 843 away from the second adjusting head 844 is provided with a second contact piece 845.

[0043] like Figure 5 , Figure 7 , Fig. 9 , Fig.11 As shown, the connecting hole 842 is adapted to the worm 85, and the worm 85 is threadedly connected to the connecting frame 84 through the connecting hole 842. An adjusting wheel 851 is provided at one end of the worm 85, and a limiting plate 852 is provided at the end of the worm 85 away from the adjusting wheel 851. A rotating member 853 is provided at the end of the worm 85 close to the adjusting wheel 851, and a second connecting ring 854 is provided on the rotating member 853. The end of the third steel wire rope 82 away from the hanging beam shoulder pole 8 is connected to the second connecting ring 854.

[0044] like Figure 8 and Fig.12As shown, the worm wheel 86 is provided with a rotating shaft 861 and an outer support rod 862. The worm wheel 86 is rotatably connected to the connecting frame 84 via the rotating shaft 861. The end of the outer support rod 862 away from the worm wheel 86 is rotatably connected to a connecting member 863. The connecting member 863 is rotatably connected to a third contact member 864. The rotation axis of the third contact member 864 is perpendicular to the rotation axis of the connecting member 863.

[0045] The working process is as follows:

[0046] S1. When in use, the connecting frame 84 is placed into the cavity of the prefabricated box beam, and the second screw 843 is rotated by the second adjusting head 844. The second screw 843 drives the second contact member 845 to abut against the inner wall of the cavity of the prefabricated box beam, thereby fixing the connecting frame 84 in the cavity of the prefabricated box beam;

[0047] S2, then rotate the adjusting wheel 851, the adjusting wheel 851 drives the worm 85 to rotate, the worm 85 drives the worm wheel 86 to rotate, the worm wheel 86 drives the connecting piece 863 to move through the outer support rod 862, the connecting piece 863 drives the third contact piece 864 to abut against the inner wall of the cavity of the prefabricated box beam, the connecting piece 863 rotates on the outer support rod 862, and the third contact piece 864 rotates on the connecting piece 863, so that the third contact piece 864 can adaptively fit with the inner wall of the cavity of the prefabricated box beam;

[0048] S3, clamp the connection frame 83 on the flanges on both sides of the prefabricated box beam, and then rotate the first adjustment head 833, the first adjustment head 833 drives the first contact member 834 to press against the flanges on both sides of the prefabricated box beam through the first screw 832, and fix the connection frame 83 on the flanges on both sides of the prefabricated box beam;

[0049] S4. When the prefabricated box girder is hoisted, the hoisting machine 6 is started. The hoisting machine 6 drives the beam-hanging pole 8 through the first steel wire rope 7 and the pulley block 4. At the moment of hoisting, the motion state of the hoisted prefabricated box girder changes. When the beam-hanging pole 8 rises, it pulls the second steel wire rope 81 and the third steel wire rope 82 to be taut. The third steel wire rope 82 pulls the rotating member 853 through the second connecting ring 854. The rotating member 853 pulls the adjusting wheel 851. The adjusting wheel 851 drives the worm 85 to move outward. The worm 85 drives the worm wheel 86 to rotate. The worm wheel 86 drives the connecting member 863 to move through the outer support rod 862. The connecting member 863 drives the third contact member 864 to be close to the inner wall of the cavity of the prefabricated box girder, thereby improving the stability of the prefabricated box girder at the moment of hoisting.

[0050] S5. During the lifting of the prefabricated box girder, when the prefabricated box girder shakes due to inertia, the third steel wire rope 82 for hoisting the prefabricated box girder is driven to swing, so that the two ends of the hoisted prefabricated box girder rise and fall with the swing of the third steel wire rope 82. Since the transmission mode between the worm wheel 86 and the worm 85 has a self-locking effect (the worm 85 can drive the worm wheel 86 to rotate, while the worm wheel 86 cannot drive the worm 85 to rotate), and due to the gravity of the prefabricated box girder itself, during the lifting process, the third steel wire rope 82 is always in a taut state. Therefore, after the prefabricated box girder is lifted, it is ensured that the third contact piece 864 is always in close contact with the inner wall of the cavity of the prefabricated box girder, so that the fixing effect of the prefabricated box girder during the lifting process will only become stronger and not weaker, thereby ensuring the stability during the lifting process and preventing the two ends of the hoisted prefabricated box girder from rising and falling with the swing of the third steel wire rope 82, causing the prefabricated box girder to tilt and slide to the side with a lower horizontal height;

[0051] S6. At the same time, during the hoisting process, the second steel wire rope 81 and the connecting frame 83 assist the third steel wire rope 82 and the connecting frame 84 to assist in fixing the prefabricated box beam, further ensuring the stability of the prefabricated box beam during the hoisting process.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hoisting device for prefabricated box beam erection construction, comprising a bridge erection machine, characterized in that: The bridge erection machine includes a support assembly, a main beam is arranged on the support assembly, a crane cross beam is arranged on the main beam, a pulley block and a crane are arranged on the crane cross beam, a winch is arranged on the crane, a first steel wire rope is arranged on the winch, the first steel wire rope is wound around the pulley block, and the first steel wire rope is connected to a hanging beam shoulder pole through the pulley block; a second steel wire rope and a third steel wire rope are arranged on the hanging beam shoulder pole, a connecting frame is arranged at one end of the second steel wire rope away from the hanging beam shoulder pole, and a connecting frame is arranged at one end of the third steel wire rope away from the hanging beam shoulder pole; a worm and a worm wheel are arranged on the connecting frame, the worm wheel is drivingly connected to the worm, and the number of the worm wheels is multiple, and a circular array is distributed on the connecting frame; An adjusting wheel is arranged at one end of the worm, a limiting plate is arranged at one end of the worm away from the adjusting wheel, a rotating member is arranged at one end of the worm close to the adjusting wheel, and a second connecting ring is arranged on the rotating member; The worm wheel is provided with a rotating shaft and an outer support rod, one end of the outer support rod away from the worm wheel is rotatably connected to a connecting piece, and the connecting piece is rotatably connected to a third contact piece.

2. The hoisting equipment for prefabricated box beam erection construction according to claim 1 is characterized by: A first connecting ring is provided on the connecting frame, and the end of the second steel wire rope away from the hanging beam shoulder pole is connected to the first connecting ring. A first screw is provided on the connecting frame, a first adjusting head is provided at one end of the first screw, and a first contact piece is provided at the end of the first screw away from the first adjusting head.

3. The hoisting equipment for prefabricated box beam erection construction according to claim 1 is characterized in that: The connecting frame is provided with a guide wheel for steering the third steel wire rope, the connecting frame is provided with a connecting hole, the connecting frame is provided with a second screw, one end of the second screw is provided with a second adjusting head, and the end of the second screw away from the second adjusting head is provided with a second contact piece.

4. The hoisting equipment for prefabricated box beam erection construction according to claim 1 is characterized by: There are multiple second steel wire ropes, which are symmetrically distributed on the hanging beam pole. There are two third steel wire ropes, which are symmetrically distributed at both ends of the hanging beam pole.

5. The hoisting equipment for prefabricated box beam erection construction according to claim 3 is characterized by: The connecting hole is matched with the worm, and the worm is threadedly connected to the connecting frame through the connecting hole.

6. The hoisting equipment for prefabricated box beam erection construction according to claim 1, characterized in that: One end of the third steel wire rope away from the hanging beam shoulder pole is connected to the second connecting ring.

7. The hoisting equipment for prefabricated box beam erection construction according to claim 1, characterized in that: The worm gear is rotatably connected to the connecting frame via the rotating shaft.

8. The hoisting equipment for prefabricated box beam erection construction according to claim 1, characterized in that: The rotation axis of the third contact member and the rotation axis of the connecting member are perpendicular to each other.

9. The hoisting equipment for prefabricated box beam erection construction according to claim 1, characterized in that: The number of the support assemblies is two, which are symmetrically distributed at both ends of the main beam.

10. The hoisting equipment for prefabricated box beam erection construction according to claim 1, characterized in that: A first track is arranged at the bottom of the support assembly, a middle support assembly is arranged at the middle of the main beam, a second track is arranged at the bottom of the middle support assembly, and a temporary support leg is arranged at the bottom of the main beam.

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