Auxiliary device for hoisting precast concrete

Abstract

The utility model relates to the technical field of hoisting of precast concrete, in particular to an auxiliary hoisting device for precast concrete. The two lifting hooks are used for hanging a concrete prefabricated part, and the two lifting hooks are rotationally arranged on the lower portion of the hanging bracket; the balance mechanism is fixedly arranged in the middle of the hanging bracket, the balance mechanism comprises a balance box with a containing cavity, a balancing weight arranged in the balance box and a driving assembly used for driving the balancing weight to reciprocate in the length direction of the balance box, and the balance of the concrete prefabricated part is adjusted by changing the position of the balancing weight in the balance box. According to the utility model, the balance mechanism is arranged on the hanging bracket, so that when the precast concrete is inclined during hoisting, the relative position of the balancing weight in the balance box is adjusted through the driving assembly, the gravity center distribution is changed, the posture of the hanging bracket is corrected to be in a balanced state, the shaking amplitude is reduced, the stability in the hoisting process is ensured, and the damage risk of the precast concrete is reduced; and the security threats of construction site personnel and peripheral settings are also reduced.

Description

Technical Field

[0001] This utility model relates to the field of concrete precast component hoisting technology, and in particular to an auxiliary device for hoisting concrete precast components. Background Technology

[0002] In modern construction, precast concrete components are widely used because they can be prefabricated in factories and then transported to the construction site for assembly, greatly improving construction efficiency. However, precast concrete components are usually large and heavy, posing many challenges during hoisting.

[0003] Traditional hoisting methods often rely solely on the hook directly connecting to pre-set lifting points on the precast component. Because the center of gravity of the precast component is difficult to pinpoint, it is prone to swaying and tilting during hoisting. This can not only damage the precast component but also pose a serious safety threat to construction site personnel and surrounding facilities. In windy weather, this simple hoisting method is even more difficult to guarantee stability, increasing construction risks.

[0004] In addition, the lack of effective auxiliary positioning devices when hoisting prefabricated components to designated locations for assembly and installation requires construction workers to manually adjust them multiple times, which consumes a lot of manpower and time and further affects the construction progress. Utility Model Content

[0005] To address at least one of the aforementioned technical problems, this utility model proposes an auxiliary device for hoisting precast concrete components, thereby resolving the issue of inconvenient adjustment of the balance state during the hoisting process of precast concrete components.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An auxiliary device for hoisting precast concrete components, comprising:

[0008] Hanger;

[0009] Two hooks are used to suspend precast concrete components, and the two hooks are rotatably mounted on the lower part of the hanger.

[0010] A balancing mechanism is fixedly installed in the middle of the hanger. The balancing mechanism includes a balancing box with a accommodating cavity, a counterweight block disposed in the balancing box, and a driving component for driving the counterweight block to reciprocate along the length direction of the balancing box. The balance of the precast concrete component is adjusted by changing the position of the counterweight block in the balancing box.

[0011] Preferably, the driving component includes:

[0012] Two rolling bearings are symmetrically embedded and fixed in the mounting holes on both sides of the balance box;

[0013] A threaded rod rotatably passes through the balance box. The threaded rod includes a threaded section inside the balance box and unthreaded connecting sections at both ends of the threaded section. The counterweight has a threaded hole in the middle that mates with the threaded rod, and the counterweight is sleeved on the outside of the threaded rod. The connecting sections are fixed to the inner ring of the rolling bearing.

[0014] A guide rod is fixedly installed inside the balance box, and the guide rod is parallel to the threaded rod. The counterweight is slidably sleeved on the guide rod.

[0015] A handle is provided for the operator to rotate the threaded rod, and the handle is fixed to the connecting section.

[0016] Preferably, there are two counterweights, which are symmetrically arranged at intervals in the balance box. The counterweights and the inner walls at both ends of the balance box have an adjustment distance that allows the two counterweights to move in the same direction to adjust the balance.

[0017] Preferably, the balance box has a partition in the middle, and the two counterweights are symmetrically arranged on both sides of the partition. The partition has a through hole in the center to facilitate the threaded rod to pass through and rotate. The inner diameter of the through hole is not less than the outer diameter of the threaded rod.

[0018] Preferably, there are two guide rods, and each guide rod has a fixed section extending to the outside of the balance box at both ends. The fixed section is threaded and fixed with a nut.

[0019] Preferably, the counterweight is disc-shaped, the balance box is cuboid, and the diameter of the counterweight is smaller than the width and height of the accommodating cavity of the balance box.

[0020] Preferably, the counterweight is provided with annular anti-collision pads on both sides, and the annular anti-collision pads are made of rubber.

[0021] Preferably, the hanger includes:

[0022] Top beam;

[0023] Lifting rings are symmetrically arranged on the upper sides of both ends of the top beam;

[0024] Two fixing plates are symmetrically arranged on the lower sides of both ends of the top beam;

[0025] Two suspension rods are respectively vertically fixed to the lower side of the two fixed plates;

[0026] A lifting beam is fixed to the end of the lifting rod away from the top beam. The lifting beam is parallel to the top beam. The balance box is fixedly installed on the upper part of the lifting beam. Two hooks are symmetrically arranged on the lower part of the lifting rod.

[0027] Preferably, the hoisting auxiliary device further includes a mounting assembly for facilitating the fixing of the balance box, the mounting assembly comprising:

[0028] Mounting plates are symmetrically fixed to both sides of the lifting beam;

[0029] A reinforcing plate is fixed to the lower part of the mounting plate and the middle of both sides of the lifting beam to improve the firmness between the mounting plate and the lifting beam.

[0030] Preferably, the top beam, the lifting ring, the fixing plate, the lifting rod, the lifting beam, the mounting plate, and the reinforcing plate are all made of stainless steel.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] This invention features a balancing mechanism on the hoist. When the precast concrete component tilts during hoisting, the relative position of the counterweight within the balance box is adjusted by the drive assembly. This changes the center of gravity distribution, corrects the hoist's posture, restores it to a balanced state, reduces the amplitude of swaying, ensures the stability of the hoisting process, reduces the risk of damage to the precast concrete component, and also reduces safety threats to personnel and surrounding areas at the construction site.

[0033] This invention utilizes a balance box on a lifting frame, with the relative position of the counterweights within the balance box adjusted by rotating a screw thread. This allows the lifting frame to return to a balanced state from an inclined position, facilitating the hoisting of precast concrete components. Furthermore, when the precast concrete component is hoisted to the designated location, the balance box can be used to adjust its installation angle, enabling rapid positioning and installation. Attached Figure Description

[0034] Figure 1 This is a structural schematic diagram of an auxiliary device for hoisting precast concrete components.

[0035] Figure 2 This is a side view of an auxiliary device for hoisting precast concrete components;

[0036] Figure 3 This is a schematic diagram of the balancing mechanism in this utility model;

[0037] Figure 4 This is a side view of the balancing mechanism in this utility model;

[0038] In the diagram: 10. Hanger; 101. Top beam; 102. Lifting ring; 103. Fixing plate; 104. Hanging rod; 105. Lifting beam; 106. Mounting assembly; 1061. Mounting plate; 1062. Reinforcing plate;

[0039] 20. Lifting hook;

[0040] 30. Balancing mechanism; 301. Balancing box; 3011. Partition plate; 302. Counterweight; 3021. Annular anti-collision pad; 303. Drive assembly; 3031. Rolling bearing; 3032. Threaded rod; 30321. Threaded section; 30322. Connecting section; 3033. Guide rod; 30331. Fixed section; 3034. Handle. Detailed Implementation

[0041] To enable those skilled in the art to better understand the technical solutions in this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this utility model, and not all of the embodiments in this utility model.

[0042] Please refer to Figure 1-4 As shown, an auxiliary device for hoisting precast concrete components includes:

[0043] Hanger 10;

[0044] Two hooks 20 are used to hang precast concrete components, and the two hooks 20 are rotatably set at the lower part of the hanger 10;

[0045] The balancing mechanism 30 is fixedly installed in the middle of the hanger 10. The balancing mechanism 30 includes a balancing box 301 with a accommodating cavity, a counterweight 302 installed in the balancing box 301, and a driving component 303 for driving the counterweight 302 to reciprocate along the length of the balancing box 301. The balance of the precast concrete component is adjusted by changing the position of the counterweight 302 in the balancing box 301.

[0046] In this embodiment, a balancing mechanism 30 is installed on the hanger 10. When the precast concrete component tilts during hoisting, the drive component 303 adjusts the relative position of the counterweight 302 in the balance box 301, changes the center of gravity distribution, corrects the posture of the hanger 10 and restores it to a balanced state, reduces the amplitude of swaying, ensures the stability of the hoisting process, reduces the risk of damage to the precast concrete component, and also reduces the safety threat to construction site personnel and surrounding facilities.

[0047] Please refer to Figure 1 and Figure 2 As shown, in this embodiment, the hanger 10 includes a top beam 101 and lifting rings 102, which are symmetrically arranged on the upper sides of both ends of the top beam 101.

[0048] Two fixing plates 103 are symmetrically arranged on the lower side of both ends of the top beam 101; two suspension rods 104 are respectively vertically fixed to the lower side of the two fixing plates 103; a suspension beam 105 is fixed to the end of the suspension rod 104 away from the top beam 101, the suspension beam 105 is parallel to the top beam 101, the balance box 301 is fixedly arranged on the upper part of the suspension beam 105, and two hooks 20 are symmetrically arranged on the lower part of the suspension rod 104.

[0049] It should be noted that in this embodiment, the top beam 101, lifting ring 102, fixing plate 103, lifting rod 104, lifting beam 105, mounting plate 1061 and reinforcing plate 1062 are all made of stainless steel.

[0050] Specifically, in this embodiment, the top beam 101 is an I-beam. The lifting ring 102 is fixed to the upper flange of the I-beam. During hoisting, it can be connected to the lifting ring 102 via a lifting rope for easy lifting of the equipment. The fixing plate 103 is fixed to the lower flange of the I-beam with bolts and nuts. The lifting rod 104 can be fixed to the center of the fixing plate 103 by welding, thus forming a single installation unit with the fixing plate 103 and the lifting rod 104, reducing installation steps and improving efficiency. Similarly, the lifting beam 105 can be fixed to the lower end of the lifting rod 104 by welding or by other detachable fastening methods. The hook 20 has a rotatable hook to facilitate the lifting of precast concrete components. The upper part of the hook 20 can be fixed to the lower end of the lifting rod 104 by welding.

[0051] Please refer to Figure 1 and Figure 3 As shown, in this embodiment, the drive assembly 303 includes: two rolling bearings 3031, symmetrically embedded and fixed in mounting holes on both sides of the balance box 301; a threaded rod 3032, rotatably penetrating the balance box 301, the threaded rod 3032 including a threaded section 30321 located inside the balance box 301 and unthreaded connecting sections 30322 located at both ends of the threaded section 30321; a counterweight 302 with a threaded hole in the middle that mates with the threaded rod 3032, the counterweight 302 being sleeved on the outside of the threaded rod 3032; the connecting section 30322 being fixed to the inner ring of the rolling bearing 3031; a guide rod 3033, fixedly disposed inside the balance box 301, and parallel to the threaded rod 3032, the counterweight 302 being slidably sleeved on the guide rod 3033; and a handle 3034 for the operator to rotate the threaded rod 3032, the handle 3034 being fixed to the connecting section 30322.

[0052] In this embodiment, when the hanger 10 tilts, the handle 3034 is turned to drive the threaded rod 3032 to rotate. Through threaded transmission, guided by the guide rod 3033, the counterweight 302 is smoothly moved in the opposite direction of the tilt of the hanger 10 until the hanger 10 returns to balance, at which point the handle 3034 is stopped. By setting the rolling bearing 3031, the friction between the threaded rod 3032 and the balance box 301 is reduced, making the rotation smoother and reducing the difficulty and intensity of balance adjustment.

[0053] It should be noted that in this embodiment, there are two counterweights 302, which are symmetrically arranged in the balance box 301. The inner walls of the counterweights 302 and the balance box 301 at both ends have an adjustment distance that allows the two counterweights 302 to move in the same direction to adjust the balance.

[0054] In this embodiment, the counterweight 302 is disc-shaped, and the balance box 301 is cuboid. The diameter of the counterweight 302 is smaller than the width and height of the cavity in the balance box 301. This prevents the counterweight 302 from colliding with the balance box 301 during movement, which would hinder the adjustment of the counterweight 302. It also prevents collisions between the counterweight 302 and the balance box 301 from affecting the balance of the hanger 10.

[0055] Please refer to Figure 3 As shown, for ease of installation and disassembly, in this embodiment, the guide rod 3033 extends outward at both ends to the outside of the balance box 301 to form a fixed section 30331. The fixed section 30331 is threaded on the outside, and the guide rod 3033 is fixed to the balance box 301 by nuts.

[0056] Specifically, when the threaded rod 3032 rotates, it applies a certain axial rotational force to the counterweight 302. The presence of the guide rod 3033 prevents the counterweight 302 from rotating, allowing it to reciprocate along the threaded rod 3032 under its guidance. In this embodiment, there are two guide rods 3033, which are positioned at the same height as the threaded rod 3032. This prevents uneven force distribution on both sides of the counterweight 302 during movement, thus avoiding torsion of the counterweight 302 and increasing resistance to its movement.

[0057] Please refer to Figure 3 As shown, a partition 3011 is provided in the middle of the balance box 301, and two counterweights 302 are symmetrically arranged on both sides of the partition 3011. The partition 3011 has a through hole in the center to facilitate the threaded rod 3032 to pass through and rotate. The inner diameter of the through hole is not less than the outer diameter of the threaded rod 3032.

[0058] It should be noted that by setting the partition 3011 to divide the balance box 301 into two symmetrical spaces, the partition 3011 can be used as a reference when installing the counterweight 302, so that the balance box 301 itself is in a balanced state during installation, and the balance box 301 will not affect the overall balance of the hanger 10.

[0059] Please refer to Figure 3 and Figure 4 As shown, in order to avoid the counterweight 302 from colliding with the inner wall of the balance box 301 and / or the partition 3011 during the balance adjustment process, annular anti-collision pads 3021 are provided on both sides of the counterweight 302 in this embodiment. The annular anti-collision pads 3021 are made of rubber.

[0060] Please refer to Figure 2 As shown, in order to facilitate the fixed installation of the balance box 301, the hoisting auxiliary device in this embodiment also includes an installation component 106, including an installation plate 1061 symmetrically fixed on both sides of the hoisting beam 105 and a reinforcing plate 1062 fixed on the lower part of the installation plate 1061 and the middle of both sides of the hoisting beam 105 to improve the firmness between the installation plate 1061 and the hoisting beam 105.

[0061] It is understood that the purpose of the mounting component 106 in this embodiment is to increase the mounting area of ​​the lifting beam 105, so as to facilitate the fixing and installation of the balance box 301.

[0062] The working process of this device is as follows:

[0063] Based on the size and weight of the precast concrete components, the position of the center of gravity is estimated, and the position of the counterweight 302 inside the balance box 301 is initially adjusted to roughly balance the center of gravity of the hanger 10.

[0064] Connect the hook 20 to the lifting point of the precast concrete component and slowly lift the component. If the precast concrete component is found to be tilted after being lifted, the operator can move the counterweight 302 to the opposite side of the tilt by turning the handle 3034 until the precast concrete component returns to a balanced state.

[0065] When the precast concrete component is hoisted to the installation position, the installation angle of the precast concrete component can be adjusted by adjusting the counterweight 302 through the handle 3034, if necessary, according to the relative position of the splicing installation, so as to achieve rapid splicing.

[0066] This application utilizes a balance box 301 installed on the hanger 10, and adjusts the relative position of the counterweights 302 within the balance box 301 by rotating a screw thread. This allows the hanger 10 to return to a balanced state from an inclined state, facilitating the hoisting of precast concrete components. Simultaneously, when the precast concrete component is hoisted to the designated position, the installation angle can be adjusted via the balance box 301 to achieve rapid positioning and installation. This device features a simple structure and convenient operation, improving the efficiency of hoisting and assembling precast concrete components while reducing risks during hoisting and enhancing construction safety.

[0067] The above description is a specific implementation of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. An auxiliary device for hoisting precast concrete components, characterized in that, include: Hanger (10); Two hooks (20) are used to hang precast concrete components, and the two hooks (20) are rotatably mounted on the lower part of the hanger (10); A balancing mechanism (30) is fixedly installed in the middle of the hanger (10). The balancing mechanism (30) includes a balancing box (301) with a accommodating cavity, a counterweight (302) installed in the balancing box (301), and a driving assembly (303) for driving the counterweight (302) to reciprocate along the length direction of the balancing box (301). The balance of the precast concrete component is adjusted by changing the position of the counterweight (302) in the balancing box (301).

2. The concrete precast component hoisting auxiliary device according to claim 1, characterized in that, The drive component (303) includes: Two rolling bearings (3031) are symmetrically embedded and fixed in the mounting holes on both sides of the balance box (301); A threaded rod (3032) rotatably passes through the balance box (301). The threaded rod (3032) includes a threaded section (30321) located inside the balance box (301) and unthreaded connecting sections (30322) located at both ends of the threaded section (30321). The counterweight (302) has a threaded hole in the middle that mates with the threaded rod (3032), and the counterweight (302) is sleeved on the outside of the threaded rod (3032). The connecting section (30322) is fixed to the inner ring of the rolling bearing (3031). The guide rod (3033) is fixedly installed inside the balance box (301), and the guide rod (3033) is parallel to the threaded rod (3032). The counterweight (302) is slidably sleeved on the guide rod (3033). A handle (3034) is used by an operator to rotate the threaded rod (3032), and the handle (3034) is fixed to the connecting section (30322).

3. The concrete precast component hoisting auxiliary device according to claim 2, characterized in that, The number of counterweights (302) is two, and they are symmetrically arranged at intervals in the balance box (301). The inner walls of the two ends of the counterweights (302) and the balance box (301) have an adjustment distance that facilitates the two counterweights (302) to move in the same direction to adjust the balance.

4. The concrete precast component hoisting auxiliary device according to claim 2, characterized in that, The balance box (301) has a partition (3011) in the middle inside, and two counterweights (302) are symmetrically arranged on both sides of the partition (3011). The partition (3011) has a through hole in the center to facilitate the threaded rod (3032) to pass through and rotate. The inner diameter of the through hole is not less than the outer diameter of the threaded rod (3032).

5. The concrete precast component hoisting auxiliary device according to claim 2, characterized in that, There are two guide rods (3033). Both ends of the guide rods (3033) are provided with fixed sections (30331) extending to the outside of the balance box (301). The fixed sections (30331) are threaded and fixed by nuts.

6. The concrete precast component hoisting auxiliary device according to claim 1, characterized in that, The counterweight (302) is disc-shaped, and the balance box (301) is cuboid. The diameter of the counterweight (302) is smaller than the width and height of the accommodating cavity of the balance box (301).

7. The auxiliary device for hoisting precast concrete components according to claim 1, characterized in that, Both sides of the counterweight (302) are provided with annular anti-collision pads (3021), which are made of rubber.

8. The auxiliary device for hoisting precast concrete components according to any one of claims 1-7, characterized in that, The hanger (10) includes: Top beam (101); Lifting rings (102) are symmetrically arranged on the upper sides of both ends of the top beam (101); Two fixing plates (103) are symmetrically arranged on the lower side of both ends of the top beam (101); Two suspension rods (104) are respectively vertically fixed to the lower side of the two fixing plates (103); A lifting beam (105) is fixed to one end of the lifting rod (104) away from the top beam (101). The lifting beam (105) is parallel to the top beam (101). The balance box (301) is fixedly installed on the upper part of the lifting beam (105). Two hooks (20) are symmetrically arranged on the lower part of the lifting rod (104).

9. The concrete precast component hoisting auxiliary device according to claim 8, characterized in that, The hoisting auxiliary device also includes a mounting assembly (106) for facilitating the fixing of the balance box (301), the mounting assembly (106) comprising: Mounting plates (1061) are symmetrically fixed to both sides of the lifting beam (105); A reinforcing plate (1062) is fixed to the lower part of the mounting plate (1061) and the middle of both sides of the hanging beam (105) to improve the firmness between the mounting plate (1061) and the hanging beam (105).

10. The concrete precast component hoisting auxiliary device according to claim 9, characterized in that, The top beam (101), the lifting ring (102), the fixing plate (103), the lifting rod (104), the lifting beam (105), the mounting plate (1061), and the reinforcing plate (1062) are all made of stainless steel.

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