A prefabricated component hoisting device for assembled building

Abstract

The present invention relates to the field of hoisting technology, and specifically to a prefabricated component hoisting device for assembled buildings, including a hanging beam, a hanger, a hook and a limit assembly; the hanger is installed on the hanging beam, and a plurality of limit grooves distributed along the length direction of the hanging beam are arranged on the hanger; there are four hooks, which are distributed in a matrix, and are arranged in groups of two, and the two hooks in the same group are connected by the same steel cable passing through the hanger; the limit assembly includes a slider, a limit block and a first elastic member, the slider is slidably installed on the hanger, the limit block can be slidably installed on the slider up and down, and is connected to the midpoint position of the steel cable; the first elastic member is connected to the steel cable, and causes the limit block to be suspended above the limit groove. By setting the limit assembly, the length of the part of the steel cable connected to the hook outside the hanger can be adaptively adjusted, and there is no need to adjust the length of the steel cable in advance according to the width of the prefabricated component. The operation is simple and easy to use. When the steel cable is tensioned, the cooperation between the limit block and the limit groove prevents the steel cable from moving, and the safety is high.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting, and in particular to a prefabricated component hoisting device for assembled buildings. Background Art

[0002] In the construction process, in order to reduce the difficulty of on-site construction and improve construction efficiency, the structural components that appear and are used repeatedly in the building are prefabricated. At the construction or production site, a lifting device is needed to move the prefabricated components produced in batches.

[0003] When the existing prefabricated component lifting device is used to lift the plate, if the widths of the two ends of the prefabricated component are inconsistent, the two hooks corresponding to the wide end will open at a larger angle, while the two hooks corresponding to the narrow end will open at a smaller angle. It is usually necessary to adjust the length of the steel cable to ensure that multiple hooks are in the same plane during lifting, which complicates the operation and affects the lifting efficiency. Summary of the invention

[0004] The invention provides a prefabricated component hoisting device for assembled buildings, so as to solve the problem that the existing hoisting device needs to adjust the length of the steel cable to affect the hoisting efficiency.

[0005] The present invention provides a prefabricated component hoisting device for assembled buildings using the following technical solutions:

[0006] A prefabricated component hoisting device for assembled buildings, comprising a hanging beam, a hanger, a hook and a limit assembly; the hanger is installed on the hanging beam and moves up and down synchronously with the hanging beam, and two rows of limit grooves are arranged on the hanger, which are parallel to the length direction of the hanging beam and distributed along the length direction of the hanging beam; there are four hooks, which are distributed in a matrix, and are arranged in groups of two, respectively, on both sides of the hanging beam in its width direction, and the two hooks in the same group are distributed at intervals along the length direction of the hanging beam; the two hooks in the same group are connected by the same steel cable passing through the hanger; there are two limit assemblies, which correspond to the two groups of hooks respectively, and the limit assemblies include a slider, a limit block and a first spring The first elastic member is installed on the slider, and its two ends are respectively connected to the steel cable, and the connection position between the first elastic member and the slider is above the limit block, and the connection position between the first elastic member and the steel cable is respectively located on both sides of the limit block; the first elastic member causes the two positions where it is connected to the steel cable to move closer to the middle, so that the limit block is suspended above the limit slot; when the steel cable is tensioned, the elastic force of the first elastic member is overcome so that the limit block and the limit slot cooperate to limit the movement of the slider.

[0007] Optionally, a second elastic member is connected between the hanger and the steel cable. There are two second elastic members, which are located on both sides of the midpoint of the steel cable. The two second elastic members have the same elastic force, causing the steel cable to extend equal lengths between the hanger and the two hooks in the same group; the elastic force of the second elastic member is smaller than the elastic force of the first elastic member.

[0008] Optionally, the hook includes a base plate, a top pressure piece, a pressure-bearing piece and a connecting piece; the connecting piece is fixed to the upper side of the base plate, the top pressure piece is located above the base plate, is bent, and is hinged to the connecting piece at the bend; the pressure-bearing piece is connected to the connecting piece; the steel cable is connected to the top pressure piece after passing through the lower side of the pressure-bearing piece; the connection point between the steel cable and the top pressure piece is the first point, the position where the top pressure piece is used to abut against the base plate is the second point, the position where the top pressure piece and the connecting piece are hinged is the third point, and the point where the lower side of the pressure-bearing piece abuts against the steel cable is the fourth point; the first point is located on the side of the third point away from the suspension beam, the second point is located on the side of the third point close to the suspension beam, and the first point is higher than the second point; the fourth point is located on the side of the third point close to the suspension beam, and the fourth point is lower than the first point; when the steel cable is tightened, the bottom plate tends to move upward through the pressure-bearing piece, and drives the top pressure piece to rotate around the third point so that the second point of the top pressure piece tends to approach the bottom plate, thereby clamping the prefabricated component between the top pressure piece and the base plate.

[0009] Optionally, the hanger is installed on the beam by rotating around the length direction of the beam, and the angle of the pressure-bearing part relative to the connecting part is adjustable, so that the abutment position of the pressure-bearing part and the steel cable can be changed; the prefabricated component lifting device for assembled buildings also includes a unhooking assembly, which is used to change the angle of the pressure-bearing part when the hanger rotates relative to the beam, so that the steel cable and the pressure-bearing part are out of contact, and then the hook is separated from the prefabricated component when the beam drives the hook to lift upward.

[0010] Optionally, there are multiple unhooking assemblies, each unhooking assembly corresponds to a hook, and is located on the same side of the hinge axis of the hanger and the beam as the corresponding hook; the unhooking assembly includes a first telescopic cylinder, a second telescopic cylinder and a connecting pipeline, the first telescopic cylinder connects the hanger and the beam; the second telescopic cylinder connects the pressure-bearing part and the connecting part; the first telescopic cylinder and the second telescopic cylinder are both filled with hydraulic oil and are connected through a connecting pipeline; when the hanger is tilted, the hydraulic oil in the first telescopic cylinder is squeezed to flow to the second telescopic cylinder, and the second telescopic cylinder pushes the pressure-bearing part to rotate relative to the connecting part until it no longer abuts against the steel cable.

[0011] Optionally, a third telescopic cylinder and a pressing plate are provided on the lower side of the hanging beam, the third telescopic cylinder connects the hanging beam and the pressing plate, and the pressing plate is arranged horizontally to fit with the prefabricated component to reduce its shaking.

[0012] Optionally, a plurality of guide cylinders are arranged on the lower side of the hanger, the guide cylinders are arranged obliquely, and one end connected to the hanger is located on the side close to the hanging beam away from one end of the hanger; the steel cable extending from the hanger passes through the guide cylinders and is connected to the hook.

[0013] Optionally, the lower side surface of the limiting block is an arc surface, and the upper end of the limiting groove is provided with a chamfered corner.

[0014] Optionally, the upper side of the bottom plate is a friction surface.

[0015] Optionally, a lifting ring is provided on the lifting beam.

[0016] The beneficial effects of the present invention are as follows: the prefabricated component lifting device for assembled buildings of the present invention adaptively adjusts the length of the portion where the steel cable is connected to the hook outside the hanger by setting a limit assembly, and there is no need to adjust the length of the steel cable according to the width of the prefabricated component in advance. The operation is simple and the use is convenient. When the steel cable is tensioned, the cooperation of the limit block and the limit groove prevents the steel cable from moving in the length direction of the hanging beam, and the safety is high.

[0017] Furthermore, when the hook is connected to the prefabricated component, it is only necessary to place the bottom plate and the top pressure piece of the hook against the lower and upper sides of the prefabricated component respectively, and utilize the tightening of the steel cable to provide the hook with a clamping force for the prefabricated component. The operation is simple and does not require additional locking. When unhooking, it is only necessary to pull out the hook on one side, and utilize the unhooking assembly to detach the hook on the other side from the prefabricated component when the suspension beam rises. The operator does not need to go around to the other side of the prefabricated component to unhook, which can reduce the operator's operating steps, save unhooking time, and improve lifting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a prefabricated component hoisting device for assembled buildings of the present invention;

[0020] Figure 2 for Figure 1 The enlarged schematic diagram of the X in the middle;

[0021] Figure 3 for Figure 1 Side view of

[0022] Figure 4 for Figure 3 Schematic diagram of the section along the AA direction;

[0023] Figure 5 for Figure 4 The enlarged schematic diagram of the Y in the middle;

[0024] Figure 6It is a schematic diagram of the structure of a hook in an embodiment of a prefabricated component lifting device for assembled buildings of the present invention;

[0025] Figure 7 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0026] Figure 8 A top view of an embodiment of a prefabricated component hoisting device for assembled buildings of the present invention;

[0027] Fig. 9 for Figure 8 Schematic diagram of the cross section of CC;

[0028] Fig.10 for Fig. 9 The enlarged schematic diagram of point D in the middle;

[0029] Fig.11 The present invention is a schematic diagram of the connection between the limit assembly and the steel cable in an embodiment of a prefabricated component lifting device for assembled buildings of the present invention.

[0030] In the figure: 100, hanging beam; 110, hanger; 111, limiting groove; 120, hook; 121, bottom plate; 122, top pressure member; 123, pressure member; 124, connecting member; 126, first point; 127, second point; 128, third point; 129, fourth point; 130, second elastic member; 140, third telescopic cylinder; 150, pressure plate; 160, guide cylinder; 170, lifting ring; 200, limiting assembly; 210, slider; 211, rod; 212, block; 220, limiting block; 230, first elastic member; 300, steel cable; 410, first telescopic cylinder; 420, second telescopic cylinder; 430, connecting pipeline. DETAILED DESCRIPTION

[0031] 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.

[0032] An embodiment of a prefabricated component hoisting device for assembled buildings of the present invention is as follows Figures 1 to 11 As shown, it includes a hanging beam 100, a hanger 110, a hook 120 and a limiting assembly 200.

[0033] A lifting ring 170 is provided on the lifting beam 100, and an external lifting device drives the lifting beam 100 to move up and down through the lifting ring 170 to complete the lifting.

[0034] The hanger 110 is installed on the hanging beam 100 and moves up and down synchronously with the hanging beam 100. The hanger 110 is provided with two rows of multiple limiting grooves 111 parallel to the length direction of the hanging beam 100 and distributed along the length direction of the hanging beam 100.

[0035] There are four hooks 120 distributed in a matrix, and in groups of two, respectively located on both sides of the beam 100 in its width direction, and the two hooks 120 in the same group are spaced apart along the length direction of the beam 100; the two hooks 120 in the same group are connected by the same steel cable 300 passing through the hanger 110.

[0036] There are two limit assemblies 200, corresponding to the two groups of hooks 120 respectively. The limit assemblies 200 include a slider 210, a limit block 220 and a first elastic member 230. The slider 210 is slidably mounted on the hanger 110 along the length direction of the hanging beam 100. Specifically, the hanger 110 is provided with a slide groove along the length direction of the hanging beam 100. The slider 210 is slidably mounted on the slide groove, and the limit groove 111 is arranged below the slide groove. The limit block 220 is slidably mounted on the slider 210 up and down, and is located above the limit groove 111 and connected to the midpoint of the steel cable 300. The lower side surface of the limit block 220 is an arc surface, and the upper end of the limit groove 111 is provided with a rounded corner to facilitate the cooperation between the limit block 220 and the limit groove 111. The first elastic member 230 is mounted on the slider 210, and the two ends are connected to the steel cable 300 respectively. The connection position between the first elastic member 230 and the slider 210 is located above the limit block 220, and the connection positions between the first elastic member 230 and the steel cable 300 are located on both sides of the limit block 220 respectively. Specifically, the first elastic member 230 is a spring, the middle part of which is wound around the slider 210, and the two ends are connected to the steel cable 300 respectively. Specifically, the slider 210 is composed of a rod 211 and two blocks 212. The rod 211 is used to wrap the first elastic member 230. The two blocks 212 are respectively located at the two ends of the rod 211 and are fixedly connected to the rod 211. The blocks 212 are provided with matching grooves for matching with the limit block 220 for sliding up and down. The first elastic member 230 forces the two positions connected to the steel cable 300 to move closer to the middle, thereby causing the limit block 220 to be suspended above the limit groove 111; when the steel cable 300 is tensioned, the elastic force of the first elastic member 230 is overcome so that the limit block 220 cooperates with the limit groove 111 to limit the movement of the slider 210.

[0037] In the initial state, the slider 210 is in the middle position of the hanger 110, and the lengths of the parts of the steel cable 300 outside the hanger 110 and respectively connected to the two hooks 120 in the same group are equal, so that the two hooks 120 in the same group are of the same height. By making the lengths of the steel cables 300 corresponding to the two groups of hooks 120 consistent, the four hooks 120 can be at the same height in the initial state. When clamping the prefabricated component, if the width of the prefabricated component is inconsistent along the length direction of the suspension beam 100, such as one end is wide and the other end is narrow, during lifting, it is only necessary to lower the suspension beam 100 until the steel cable 300 connected to the hook 120 is in a relaxed state, connect the hook 120 and the prefabricated component, and then in the process of the suspension beam 100 rising, the steel cables 300 on the corresponding sides of the two hooks 120 connected to the wider end of the prefabricated component are tightened first, and the slider 210 is driven by the steel cable 300 to move toward the wider end of the prefabricated component until both ends of the steel cable 300 are tightened, and the hooks 120 at both ends of the steel cable 300 move upward with the hanger 110 at the same time, and the steel cable 300 is tensioned so that the limit block 220 cooperates with a limit groove 111 to prevent the steel cable 300 from moving in the length direction of the suspension beam 100 during lifting.

[0038] By setting the limit assembly 200, the length of the connection part of the steel cable 300 with the hook 120 outside the hanger 110 can be adaptively adjusted. There is no need to adjust the length of the steel cable 300 according to the width of the prefabricated component in advance. The operation is simple and easy to use. When the steel cable 300 is tensioned, the cooperation between the limit block 220 and the limit groove 111 prevents the steel cable 300 from moving in the length direction of the suspension beam 100, and the safety is high.

[0039] In this embodiment, a second elastic member 130 is connected between the hanger 110 and the steel cable 300. There are multiple second elastic members 130, and they are arranged in groups of two. The two second elastic members 130 in the same group are respectively located on both sides of the midpoint of the same steel cable 300. The two second elastic members 130 in the same group have the same elastic force, which causes the steel cable 300 to extend to the same length between the hanger 110 and the two hooks 120 in the same group. The elastic force of the second elastic member 130 is less than the elastic force of the first elastic member 230. By setting the second elastic member 130, the length of the connecting part of the steel cable 300 outside the hanger 110 and the two hooks 120 is equal in the initial state without force, ensuring that when the suspension beam 100 is lowered in the initial state, both ends of the steel cable 300 can be in a relaxed state. Among them, the first elastic member 230 and the second elastic member 130 are both springs.

[0040] In this embodiment, the hook 120 includes a bottom plate 121, a top pressure piece 122, a pressure piece 123 and a connecting piece 124; the connecting piece 124 is fixed to the upper side of the bottom plate 121, the top pressure piece 122 is located above the bottom plate 121, is bent, and is hinged to the connecting piece 124 at the bend. The pressure piece 123 is connected to the connecting piece 124; the steel cable 300 is connected to the top pressure piece 122 after passing through the lower side of the pressure piece 123. The connection point between the steel cable 300 and the top pressure piece 122 is the first point 126, the position where the top pressure piece 122 is used to abut against the bottom plate 121 or the prefabricated component is the second point 127, the position where the top pressure piece 122 and the connecting piece 124 are hinged is the third point 128, and the point where the lower side of the pressure piece 123 abuts against the steel cable 300 is the fourth point 129; the first point 126 is located on the side of the third point 128 away from the suspension beam 100, the second point 127 is located on the side of the third point 128 close to the suspension beam 100, and the first point 126 is higher than the second point 127; the fourth point 129 is located on the side of the third point 128 close to the suspension beam 100, and the fourth point 129 is lower than the first point 126. When the steel cable 300 is tightened, the bottom plate 121 tends to move upward through the pressure piece 123, and drives the top pressure piece 122 to rotate around the third point 128 so that the second point 127 of the top pressure piece 122 tends to approach the bottom plate 121, thereby clamping the prefabricated component between the top pressure piece 122 and the bottom plate 121. Among them, the upper side surface of the bottom plate 121 is a friction surface, which can increase the friction between it and the prefabricated component and improve the stability of the lifting process. Specifically, when in use, the prefabricated component is placed between the bottom plate 121 and the second point 127 of the top pressure piece 122. When the steel cable 300 is tightened, since the contact point between the steel cable 300 and the pressure piece 123 is located at the lower side of the pressure piece 123, an upward force is exerted on the pressure piece 123, and then an upward force is exerted on the connecting piece 124 and the bottom plate 121 connected to the pressure piece 123; at the same time, since the steel cable 300 bypasses the lower side of the pressure piece 123 and connects to the top pressure piece 122, the steel cable 300 is connected to the bottom plate 121. The first point 126 is connected, and the first point 126 is located on the side of the third point 128 away from the suspension beam 100, so that the steel cable 300 has a rotational force on the top pressure piece 122. The first point 126 rotates around the third point 128 to the side close to the suspension beam 100 under the drive of the steel cable 300, and then the second point 127 rotates downward around the third point 128 to press the prefabricated component; the bottom plate 121 moves upward and the second point 127 of the top pressure piece 122 moves downward, and the two work together to clamp the prefabricated component.

[0041] In some other embodiments, a third elastic member (not shown in the figure) is provided between the bottom plate 121 and the top pressure member 122. The third elastic member is a torsion spring, and when the steel cable 300 connected to the hook 120 is loosened, the bottom plate 121 and the top pressure member 122 are urged to move away from each other, making it easier for the operator to pull the hook 120 out from the side of the prefabricated component.

[0042] In this embodiment, the hanger 110 is rotatably mounted on the hanging beam 100 in the length direction of the hanging beam 100, and the angle of the pressure-bearing member 123 relative to the connecting member 124 is adjustable, so that the contact position between the pressure-bearing member 123 and the steel cable 300 is variable. The prefabricated component hoisting device for assembled buildings also includes a decoupling assembly, which is used to change the angle of the pressure-bearing member 123 when the hanger 110 rotates relative to the hanging beam 100, so that the steel cable 300 is out of contact with the pressure-bearing member 123, and then the hook 120 is separated from the prefabricated component when the hanging beam 100 drives the hook 120 to lift upward.

[0043] In this embodiment, a fourth elastic member (not shown in the figure) is provided between the hanger 110 and the suspension beam 100 to enable the hanger 110 to return to a horizontal state; specifically, the fourth elastic member is a compression spring, and a plurality of the fourth elastic members may be symmetrically provided on both sides of the hanger 110 . There are multiple unhooking assemblies, each of which corresponds to a hook 120, and is located on the same side of the hinge axis of the hanger 110 and the beam 100 as the corresponding hook 120; the unhooking assembly includes a first telescopic cylinder 410, a second telescopic cylinder 420 and a connecting pipe 430, the first telescopic cylinder 410 connects the hanger 110 and the beam 100; the second telescopic cylinder 420 connects the pressure-bearing member 123 and the connecting member 124; the first telescopic cylinder 410 and the second telescopic cylinder 420 are both filled with hydraulic oil, and are connected through the connecting pipe 430; when the hanger 110 is tilted, the hydraulic oil in the first telescopic cylinder 410 is squeezed to flow to the second telescopic cylinder 420, and the second telescopic cylinder 420 pushes the pressure-bearing member 123 to rotate relative to the connecting member 124 until it no longer abuts against the steel cable 300. Specifically, for ease of explanation, the length direction of the hanging beam 100 is set as the front-to-back direction, and the width direction is set as the left-to-right direction, one group of hooks 120 is located on the left side of the hanging beam 100, and the other group of hooks 120 is located on the right side of the hanging beam 100. The unhooking assembly and the corresponding hook 120 are located on the same side of the hanging beam 100. When lowering the prefabricated component, a plurality of support rods are usually placed on the table, and the prefabricated component is placed on the plurality of support rods, so that the prefabricated component is suspended in the air, which facilitates the hook 120 to be detached from the prefabricated component. After the prefabricated component is placed on the support rod, the hanging beam 100 is moved down further until the steel cable 300 connected to the hook 120 is loosened. The operator stands on the right side of the hanging beam 100 and pulls out the hook 120 on that side from the side of the prefabricated component. Then the hanging beam 100 is moved up. Since the hook 120 on the other side is not separated from the prefabricated component, the hanging bracket 110 is pulled to the left by the hook 120 on the left side when the hanging beam 100 rises. The hanging bracket 110 squeezes the first telescopic cylinder 410 on the left side, and the hydraulic oil in the first telescopic cylinder 410 is connected to the first telescopic cylinder 410 through the connecting pipe. 430 flows to the second telescopic cylinder 420, so that the second telescopic cylinder 420 on the left hook 120 extends, pushing the pressure piece 123 on the left hook 120 to rotate until it is no longer in contact with the steel cable 300. When the hanging beam 100 continues to rise, the steel cable 300 drives the first point 126 of the top pressure piece 122 of the left hook 120 to move upward. Since the bottom plate 121 has no upward power, the hook 120 is driven by the top pressure piece 122 to rotate upward around the second point 127 of the top pressure piece 122 that contacts the prefabricated component and detaches from the prefabricated component. Afterwards, the hanger 110 returns to the horizontal state under the action of the fourth elastic member, thereby driving the first telescopic cylinder 410 to return to the initial state, and the pressure piece 123 returns to the initial position. The hanging beam 100 continues to move upward to lift other prefabricated components.With this unhooking method, the operator only needs to unhook the hook 120 on one side, and the hook 120 on the other side will automatically detach as the suspension beam 100 rises. The operator does not need to go around to the other side of the prefabricated component to unhook, which can reduce the operator's operating steps, save unhooking time, and improve lifting efficiency.

[0044] In this embodiment, a third telescopic cylinder 140 and a pressing plate 150 are arranged on the lower side of the hanging beam 100. The third telescopic cylinder 140 connects the hanging beam 100 and the pressing plate 150. The pressing plate 150 is arranged horizontally to fit with the prefabricated components and reduce their shaking during the process of lifting the prefabricated components.

[0045] In this embodiment, a plurality of guide cylinders 160 are provided at the lower side of the hanger 110. The guide cylinders 160 are arranged obliquely, and one end connected to the hanger 110 is located at a side close to the hanging beam 100 and away from the end of the hanger 110; the steel cable 300 extending from the hanger 110 passes through the guide cylinders 160 and is connected to the hook 120. The guide cylinders 160 guide the steel cables 300 on both sides of the hanging beam 100 away from each other, so as to prevent the steel cables 300 and the hook 120 on both sides of the hanging beam 100 from being entangled with each other. Optionally, the second elastic member 130 is located in the guide cylinder 160.

[0046] In the initial state of the prefabricated component hoisting device for assembled buildings of the present invention, the parts of the hanging beam 100 from the lowering to the connection between the steel cable 300 and the hook 120 are in a relaxed state, the hanger 110 is in a horizontal state under the action of the fourth elastic member, and the length of the steel cable 300 located outside the hanger 110 and connected to the two hooks 120 is equal under the action of the second elastic member 130; and under the action of the first elastic member 230, the midpoint of the steel cable 300 is located above the limit groove 111 along with the limit block 220. During hoisting, the hanging beam 100 moves to the position just above the central axis of the prefabricated component, and the operator buckles the hook 120 on both sides of the prefabricated component, and the bottom plate 121 and the top pressure piece 122 of the hook 120 are located at the lower side and the upper side of the prefabricated component respectively. After that, the hanging beam 100 moves upward. If the width of the prefabricated component along the length direction of the hanging beam 100 is inconsistent, such as one end is wide and the other end is narrow, during the rising process of the hanging beam 100, the steel cables 300 on the corresponding sides of the two hooks 120 connected to the wider end of the prefabricated component are tightened first, and the sliding block 210 is driven by the steel cables 300 to move toward the wider end of the prefabricated component until both ends of the steel cables 300 are tightened, and the hooks 120 at both ends of the steel cables 300 move upward with the hanger 110 at the same time. At this time, the hooks 120 at both ends of the steel cables 300 are in the same horizontal plane. And the steel cables 300 are tensioned so that the limit block 220 cooperates with a limit slot 111 to prevent the steel cables 300 from moving in the length direction of the hanging beam 100 during the hoisting process.

[0047] When the steel cable 300 is tightened, since the contact point between the steel cable 300 and the pressure-bearing member 123 is located at the lower side of the pressure-bearing member 123, an upward force is exerted on the pressure-bearing member 123, and then an upward force is exerted on the connecting member 124 and the bottom plate 121 connected to the pressure-bearing member 123; at the same time, since the steel cable 300 bypasses the lower side of the pressure-bearing member 123 and is connected to the top pressure member 122, and the first point 126 is located on the side of the third point 128 away from the suspension beam 100, the steel cable 300 has a rotational force on the top pressure member 122, and the first point 126 rotates around the third point 128 toward the side close to the suspension beam 100 under the drive of the steel cable 300, and then the second point 127 rotates downward around the third point 128 to press the prefabricated component; the bottom plate 121 moves upward and the second point 127 of the top pressure member 122 moves downward, and the two work together to clamp the prefabricated component. Therefore, when the hook 120 is initially placed, there is no need to lock the hook 120 and the prefabricated component. During the lifting process, tightening the steel cable 300 can automatically lock the hook 120 and the prefabricated component, which is easy to operate.

[0048] When the hanging beam 100 drives the prefabricated component to move to the specified position, it moves downward to place the prefabricated component on multiple support rods on the table, so that the prefabricated component is suspended in the air, and then the hanging beam 100 continues to move downward until the steel cable 300 connected to the hook 120 is loosened, and the operator stands on one side of the hanging beam 100 to pull out the hook 120 on that side from the side of the prefabricated component (because when the steel cable 300 is loose, the clamping force between the hook 120 and the prefabricated component is small, it can be directly pulled out), and then the hanging beam 100 is moved up. Since the hook 120 on the other side is not separated from the prefabricated component, when the hanging beam 100 rises, the hanger 110 will be pulled toward that side by the hook 120 on that side. , the hanger 110 squeezes the first telescopic cylinder 410 on this side, and the hydraulic oil in the first telescopic cylinder 410 flows to the second telescopic cylinder 420 through the connecting pipe 430, so that the second telescopic cylinder 420 on the hook 120 on this side extends, pushing the pressure piece 123 on the hook 120 on this side to rotate until it is no longer in contact with the steel cable 300. When the hanging beam 100 continues to rise, the first point 126 of the top pressure piece 122 of the left hook 120 is driven by the steel cable 300 to move upward. Since the bottom plate 121 has no upward power, the hook 120 is driven by the top pressure piece 122 to rotate upward around the second point 127 of the top pressure piece 122 that contacts the prefabricated component and separates from the prefabricated component. After that, the hanger 110 is restored to the horizontal state under the action of the fourth elastic member, and then drives the first telescopic cylinder 410 to return to the initial state, and the pressure piece 123 returns to the initial position. The hanging beam 100 continues to move upward and reaches the next prefabricated component position to continue lifting. With this unhooking method, the operator only needs to unhook the hook 120 on one side, and the hook 120 on the other side will automatically detach as the suspension beam 100 rises. The operator does not need to go around to the other side of the prefabricated component to unhook, which can reduce the operator's operating steps, save unhooking time, and improve lifting efficiency.

[0049] 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 prefabricated component hoisting device for assembled buildings, characterized in that: It includes a hanging beam, a hanger, a hook and a limiter assembly; The hanger is installed on the hanging beam and moves up and down synchronously with the hanging beam. The hanger is provided with two rows of multiple limit grooves parallel to the length direction of the hanging beam and distributed along the length direction of the hanging beam; There are four hooks, which are arranged in a matrix and in groups of two, respectively, on both sides of the beam in the width direction, and the two hooks in the same group are spaced apart along the length direction of the beam; the two hooks in the same group are connected by the same steel cable passing through the hanger; There are two limit assemblies, corresponding to the two groups of hooks respectively. The limit assemblies include a slider, a limit block and a first elastic member. The slider is slidably installed on the hanger along the length direction of the hanging beam. The limit block can be slidably installed on the slider up and down, and is located above the limit slot and connected to the midpoint of the steel cable; the first elastic member is installed on the slider, and the two ends are respectively connected to the steel cable, and the connection position of the first elastic member and the slider is located above the limit block, and the connection position of the first elastic member and the steel cable is respectively located on both sides of the limit block; the first elastic member causes the two positions where it is connected to the steel cable to move closer to the middle, so that the limit block is suspended above the limit slot; when the steel cable is tensioned, the elastic force of the first elastic member is overcome so that the limit block and the limit slot cooperate to limit the movement of the slider.

2. The prefabricated component hoisting device for assembled buildings according to claim 1, characterized in that: A second elastic member is connected between the hanger and the steel cable. There are two second elastic members, which are located on both sides of the midpoint of the steel cable. The two second elastic members have the same elastic force, which causes the steel cable to extend an equal length between the hanger and the two hooks in the same group. The elastic force of the second elastic member is smaller than the elastic force of the first elastic member.

3. The prefabricated component hoisting device for assembled buildings according to claim 1, characterized in that: The hook comprises a bottom plate, a top pressure piece, a pressure bearing piece and a connecting piece; the connecting piece is fixed to the upper side of the bottom plate, the top pressure piece is located above the bottom plate, is bent, and is hinged to the connecting piece at the bend; the pressure bearing piece is connected to the connecting piece; the steel cable is connected to the top pressure piece after passing through the lower side of the pressure bearing piece; the connection point between the steel cable and the top pressure piece is the first point, the position where the top pressure piece is used to abut against the bottom plate is the second point, the position where the top pressure piece is hinged to the connecting piece is the third point, and the point where the lower side of the pressure bearing piece abuts against the steel cable is the fourth point; the first point is located on the side of the third point away from the suspension beam, the second point is located on the side of the third point close to the suspension beam, and the first point is higher than the second point; The fourth point is located on the side of the third point close to the suspension beam, and the fourth point is lower than the first point; when the steel cable is tightened, the bottom plate tends to move upward through the pressure-bearing member, and drives the top pressure member to rotate around the third point so that the second point of the top pressure member tends to approach the bottom plate, thereby clamping the prefabricated component between the top pressure member and the bottom plate.

4. The prefabricated component hoisting device for assembled buildings according to claim 3, characterized in that: The hanger is installed on the beam and rotates around the length direction of the beam. The angle of the pressure-bearing part relative to the connecting part is adjustable, so that the abutment position of the pressure-bearing part and the steel cable can be changed. The prefabricated component lifting device for assembled buildings also includes a unhooking assembly, which is used to change the angle of the pressure-bearing part when the hanger rotates relative to the beam, so that the steel cable and the pressure-bearing part are out of contact, and then the hook is separated from the prefabricated component when the beam drives the hook to lift upward.

5. The prefabricated component hoisting device for assembled buildings according to claim 4, characterized in that: There are multiple unhooking assemblies, each unhooking assembly corresponds to a hook, and is located on the same side of the hinge axis of the hanger and the hanging beam as the corresponding hook; the unhooking assembly includes a first telescopic cylinder, a second telescopic cylinder and a connecting pipeline, the first telescopic cylinder connects the hanger and the hanging beam; the second telescopic cylinder connects the pressure-bearing member and the connecting member; the first telescopic cylinder and the second telescopic cylinder are both filled with hydraulic oil and are connected through a connecting pipeline; when the hanger is tilted, the hydraulic oil in the first telescopic cylinder is squeezed to flow to the second telescopic cylinder, and the second telescopic cylinder pushes the pressure-bearing member to rotate relative to the connecting member until it no longer abuts against the steel cable.

6. The prefabricated component hoisting device for assembled buildings according to claim 1, characterized in that: A third telescopic cylinder and a pressing plate are arranged at the lower side of the hanging beam. The third telescopic cylinder connects the hanging beam and the pressing plate. The pressing plate is arranged horizontally to fit with the prefabricated component to reduce its shaking.

7. The prefabricated component hoisting device for assembled buildings according to claim 1, characterized in that: A plurality of guide cylinders are arranged at the lower side of the hanger. The guide cylinders are arranged obliquely, and one end connected with the hanger is located at a side close to the hanging beam away from one end of the hanger; the steel cable extending from the hanger passes through the guide cylinder and is connected with the hook.

8. The prefabricated component hoisting device for assembled buildings according to claim 1, characterized in that: The lower side surface of the limiting block is an arc surface, and the upper end of the limiting groove is provided with a chamfered corner.

9. The prefabricated component hoisting device for assembled buildings according to claim 3, characterized in that: The upper side of the bottom plate is the friction surface.

10. The prefabricated component hoisting device for assembled buildings according to claim 1, characterized in that: A lifting ring is arranged on the lifting beam.

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