Stable type auxiliary load-bearing hoisting long arm
By designing a stable auxiliary load-bearing lifting boom and using an automatic control device to adjust the position of the sliding counterweight box, the high-risk problem in the lifting process of concrete components was solved, achieving safe and convenient lifting operations and improving construction safety and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU FANGSHI CONSTR ENG SUPERVISION
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-28
AI Technical Summary
During the hoisting of concrete components, existing technologies present challenges in achieving high-quality and stable operation with high risks, particularly highlighting the safety of construction workers and requiring considerable strength to operate heavy components.
A stable auxiliary load-bearing lifting boom was designed, which includes a trapezoidal support reaction frame, a balance adjustment component and an automatic control device. The position of the sliding counterweight box is automatically adjusted through pressure sensors, stepper motors and control modules, so as to ensure that heavy objects can be moved with less force, thereby improving the convenience and safety of operation.
It enables accurate hoisting and positioning of concrete components, reduces operational intensity, improves construction safety and efficiency, ensures that construction workers maintain a safe distance from the components, and the dynamic balancing function adapts to weight changes, reducing unexpected risks.
Smart Images
Figure CN224172349U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building technology, and in particular to a stable auxiliary load-bearing hoisting boom. Background Technology
[0002] PC buildings, also known as prefabricated concrete buildings, are composed of precast concrete components such as wall panels, composite floor slabs, stairs, and balconies. After being hoisted and installed on the construction site, they are integrated into a whole by casting vertical joints between wall panels, grouting sleeves connecting the main vertical reinforcing bars between upper and lower wall panels, and casting composite floor beams and slabs.
[0003] When concrete components are hoisted to their designated positions, construction workers need to double-check the alignment of the anchoring reinforcement bars with the pre-drilled holes on the bottom of the component and the mating surface. Simultaneously, they must manually adjust the suspended component to ensure it is upright. This process requires workers to repeatedly lie prone to check the alignment of the anchoring reinforcement bars with the pre-drilled holes, or use a flat mirror to inspect the alignment. Furthermore, hoisting heavy components requires significant effort from the operator using a single long hoisting arm. Therefore, each component hoisting operation is a high-risk task, with particular emphasis on worker safety. Achieving high-quality, smooth component hoisting is crucial to ensuring the safety of both construction workers and the concrete components. Summary of the Invention
[0004] The purpose of this invention is to provide a stable auxiliary load-bearing hoisting boom with a simple structure, intuitive and convenient operation, and flexible application. It enables the accurate and assisted hoisting and positioning of large prefabricated concrete components, ensuring the safety of construction workers. Furthermore, by adding an automatic control device, this invention can automatically adjust the position of the sliding counterweight box, ensuring that heavier objects can be moved with less force, further improving operational convenience and safety.
[0005] The technical solution adopted to achieve the above objectives is a stable auxiliary load-bearing hoisting boom, including a trapezoidal support reaction frame and a balance adjustment assembly installed on the trapezoidal support reaction frame. The balance adjustment assembly includes a balance adjustment operating rod, a control module, a triangular support assembly, and an adjustment cylinder connected to the triangular support assembly. The balance adjustment operating rod is installed inside the adjustment cylinder. One end of the balance adjustment operating rod passing through the adjustment cylinder is provided with a support plate, and the other end is provided with an operating crossbar. A pressure sensor is provided on the support plate. A sliding mechanism is provided on the balance adjustment operating rod between the operating crossbar and the adjustment cylinder. A movable counterweight assembly is provided; the movable counterweight assembly includes a counterweight box inserted on a balance adjustment lever, a stepper motor located inside the balance adjustment lever, and a lead screw connected to the stepper motor; a sliding assembly is provided on the upper part of the counterweight box, and the sliding assembly is fitted onto the lead screw; a support plate is provided on the top of the trapezoidal support reaction frame, and a rotating tray is provided in the middle of the support plate, and the triangular support assembly is installed on the rotating tray; the control module is located at the bottom of the support plate, and a grip force sensor is provided on the operating crossbar; the control module is electrically connected to the stepper motor, the grip force sensor, and the pressure sensor.
[0006] Furthermore, in order to precisely control the displacement distance of the counterweight box, the sliding assembly includes two sets of sliders adapted to the balance adjustment operating rod, a sliding bearing installed in the slider, and a lead screw connecting column extending downward into the balance adjustment operating rod. The lead screw connecting column is provided with a lead screw threaded hole, and the lead screw passes through the lead screw threaded hole. The slider is provided with a plug-in hole, and the counterweight box is connected to the slider through the plug-in hole.
[0007] Furthermore, the stepper motor is installed inside the balance adjustment lever and fixed with screws.
[0008] Furthermore, in order to realize the lever principle, the top of the triangular support assembly is provided with a bearing, and the adjusting cylinder is mounted on the bearing; the middle of the balance adjustment operating rod is provided with multiple sets of pin holes, and the adjusting cylinder is provided with pins.
[0009] Furthermore, in order to achieve balance between the trapezoidal support reaction frame and the ground, and to ensure that the top support plate of the trapezoidal support reaction frame remains horizontal, adjustable height spiral supports are provided at the four corners of the bottom of the trapezoidal support reaction frame.
[0010] Furthermore, to facilitate construction workers' observation of the alignment between the bottom of the component to be hoisted and the mating surface, the bottom of the trapezoidal support reaction frame is equipped with an adjustable-angle reflector.
[0011] Furthermore, the balance adjustment lever between the tray and the adjusting cylinder is equipped with a standard scale.
[0012] Compared with the prior art, this utility model has the following advantages: This utility model provides a safe load-bearing, stable displacement and positioning auxiliary support long arm with a simple structure, intuitive and easy operation, which can be operated by non-professionals and is flexible in application; through an automatic control device, it can automatically adjust the position of the sliding counterweight box, ensuring that heavy objects can be moved with less force, improving the convenience and safety of operation; it effectively solves the problem of accurately hoisting and positioning large prefabricated concrete components and ensuring the safety of construction workers, and ensures that construction workers and the hoisted components can maintain an effective safe distance during the hoisting operation. Attached Figure Description
[0013] The present invention will now be described in further detail with reference to the accompanying drawings.
[0014] Figure 1 This is a schematic diagram of the overall structure of a stable auxiliary load-bearing hoisting boom according to this utility model;
[0015] Figure 2 This is a schematic diagram of a stable auxiliary load-bearing hoisting boom balance adjustment component according to this utility model. Figure 1 ;
[0016] Figure 3 This is a schematic diagram of a stable auxiliary load-bearing hoisting boom balance adjustment component according to this utility model. Figure 2 ;
[0017] Figure 4 This is a schematic diagram of a stable auxiliary load-bearing hoisting boom balance adjustment component according to this utility model. Figure 3 ;
[0018] Figure 5 This is a schematic diagram of a stable auxiliary load-bearing hoisting boom balance adjustment component according to this utility model. Figure 4 ;
[0019] Figure 6 This is a cross-sectional view of a stable auxiliary load-bearing hoisting boom according to this utility model, showing the slider installed on the balance adjustment operating rod;
[0020] Figure 7 This is a schematic diagram of a stable auxiliary load-bearing hoisting boom balance adjustment component according to this utility model. Figure 5 .
[0021] In the diagram: 1. Trapezoidal support reaction frame; 2. Balance adjustment assembly; 3. Balance adjustment operating lever; 4. Control module; 5. Triangular support assembly; 6. Adjustment cylinder; 7. Support plate; 8. Operating crossbar; 9. Movable counterweight assembly; 10. Counterweight box; 11. Stepper motor; 12. Lead screw; 13. Sliding assembly; 14. Support plate; 15. Rotating tray; 16. Grip force sensor; 17. Slider; 18. Sliding bearing; 19. Insertion hole; 10. Screw; 11. Bearing; 12. Pin hole; 13. Pin; 14. Adjustable height spiral support; 15. Reflector; 16. Standard scale; 17. Pressure sensor; 18. Lead screw connecting column; 19. Lead screw threaded hole; 10. Detailed Implementation
[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0024] The following description, with reference to the accompanying drawings, further illustrates a stable auxiliary load-bearing hoisting boom according to this utility model:
[0025] like Figure 1-7The diagram shows a stable auxiliary load-bearing lifting boom, comprising a trapezoidal support reaction frame 1 and a balance adjustment assembly 2 mounted on the trapezoidal support reaction frame 1. The balance adjustment assembly 2 includes a balance adjustment operating rod 3, a control module 4, a triangular support assembly 5, and an adjustment cylinder 6 connected to the triangular support assembly 5. The balance adjustment operating rod 3 is installed inside the adjustment cylinder 6. One end of the balance adjustment operating rod 3 passes through the adjustment cylinder 6 and is provided with a support plate 31, while the other end is provided with an operating crossbar 32. A pressure sensor 311 is provided on the support plate 31. A movable counterweight assembly 33, which can slide on the balance adjustment operating rod 3, is provided between the operating crossbar 32 and the adjustment cylinder 6. The movable counterweight assembly 33 includes a counterweight box 331 inserted on the balance adjustment operating rod 3, a stepper motor 332 located inside the balance adjustment operating rod 3, and a lead screw 333 connected to the stepper motor 332. The stepper motor 332 is installed inside the balance adjustment operating rod 3 and communicates with the outside. The counterweight box 331 is fixed with screws 34. A sliding assembly 334 is provided on the upper part of the counterweight box 331. The sliding assembly 334 is fitted onto the lead screw 333. The sliding assembly 334 includes two sets of sliders 3341 adapted to the balance adjustment operating rod 3. The sliders are installed on the balance adjustment operating rod at a certain distance from each other. A sliding bearing 3342 is provided inside the slider 3341. The sliding bearing contacts the balance adjustment operating rod, providing displacement lubrication. It also includes a lead screw connecting post 3344 extending downward into the balance adjustment operating rod. The lead screw connecting post has a lead screw threaded hole 3345. The lead screw passes through the lead screw threaded hole 3345. When the lead screw rotates within the lead screw threaded hole 3345, it will displace the sliding assembly. The forward or reverse rotation of the lead screw achieves forward or reverse displacement. The slider 3341 has a insertion hole 3343. The counterweight box 331 is connected to the slider 3341 through the insertion hole 3343, thereby driving the counterweight box 331 to move on the balance adjustment operating rod.
[0026] In this embodiment, the trapezoidal support reaction frame 1 has a support plate 11 at the top, and a rotating tray 12 in the middle of the support plate 11. Its function is to allow horizontal swinging to adjust the position between the hoisted large concrete prefabricated component and the joint table. The triangular support assembly 5 is mounted on the rotating tray 12, and a bearing 51 is provided at the top of the triangular support assembly 5. An adjusting cylinder 6 is mounted on the bearing 51, and a balance adjustment rod is fitted into the adjusting cylinder 6. After installation, the balance adjustment rod can be moved up and down using the bearing as a point, leveraging the principle of leverage. This allows vertical swinging to adjust the position between the hoisted large concrete prefabricated component and the joint table. The balance adjustment rod 3 has multiple sets of pin holes 35 arranged in the middle, and a pin 61 is provided on the adjusting cylinder 6. The balance adjustment rod 3 and the adjusting cylinder 6 can be fixed together by the pins. The control module 4 is located at the bottom of the support plate 11, and the control lever 32 is equipped with a grip force sensor 321. The control module 4 is electrically connected to the stepper motor 332, the grip force sensor 321, and the pressure sensor 311. The control module also includes a controller (not shown). The controller (not shown) has a built-in algorithm that dynamically calculates the target position of the counterweight box based on the real-time detected force on the support plate and the position data of the counterweight box, combined with the lever principle. It achieves precise adjustment through PID control. Through the coordinated work of the pressure sensor, grip force sensor, controller (not shown), and stepper motor, it has a dynamic balancing function. It monitors the force state of the hoisting component in real time and automatically adjusts the position of the counterweight box to ensure that the balance adjustment lever is always in the optimal torque balance state. The operator only needs to make fine adjustments by operating the lever to easily control the hoisting posture of the heavy component, which greatly reduces the operation intensity and improves safety and work efficiency.
[0027] In this embodiment, adjustable height spiral supports 13 are provided at the four corners of the bottom of the trapezoidal support reaction frame 1 to achieve balance between the trapezoidal support reaction frame and the ground, and to ensure that the top support plate of the trapezoidal support reaction frame remains horizontal.
[0028] In this embodiment, an adjustable-angle reflector 14 is provided at the bottom of the trapezoidal support reaction frame 1. Through the reflector, construction workers can use the principle of reflection to observe the alignment position and distance between the bottom of the component to be hoisted and the joint surface, especially to verify whether the anchoring steel bar and the reserved hole below the component are aligned. The reflection angle of the reflector can be adjusted according to actual needs.
[0029] In this embodiment, in order to improve efficiency, the weight of the object to be lifted is estimated in the early stage of use. Then, according to the lever principle, the length of the balance adjustment rod 3 inserted into the front and rear ends of the adjustment cylinder 6 is adjusted in advance. The balance adjustment rod 3 between the support plate 31 and the adjustment cylinder 6 is provided with a standard scale 36, which can be used to achieve quick adjustment.
[0030] Working Principle: This utility model is placed on a relatively flat surface on one side of the mating surface of the component to be hoisted, with a certain operating distance reserved. Construction workers perform various operations on the side of the balance adjustment operating rod with the operating crossbar. First, the adjustable height spiral supports at the four corners of the bottom of the trapezoidal support reaction frame are adjusted to keep the entire trapezoidal support reaction frame horizontal, especially ensuring the top support plate of the trapezoidal support reaction frame is horizontal. This ensures that the balance adjustment operating rod of this utility model is on a stable horizontal plane for operation. Next, when the component to be hoisted is lifted by a crane to a distance of no more than 0.5 meters above the mating surface, the construction workers use the operating crossbar to swing the balance adjustment operating rod so that the L-shaped support plate supports the bottom edge of the hoisted component. While the L-shaped support plate is in contact with the bottom edge of the hoisted component, the pressure sensor detects the weight borne by the L-shaped support plate and transmits the signal to the controller. Based on the feedback signal from the sensor, the controller controls the stepper motor to drive the counterweight box to slide on the balance adjustment operating rod, automatically adjusting the position of the counterweight box to ensure the balance adjustment operating rod is level. In the hoisting process, counterweight materials such as sandbags and concrete blocks are added to the counterweight box according to the weight of the component being hoisted. The crane slowly lowers the component to be hoisted, while the construction workers hold the operating bar and swing the balance adjustment rod appropriately to keep the component aligned with the mating surface and maintain overall stability during the slow descent. When the bottom of the component is less than 0.05 meters from the mating surface, the construction workers hold the operating bar to detach the L-shaped support plate of the balance adjustment rod from the component. At this point, the component is safely hoisted and positioned, and the construction workers can approach to temporarily fix the component and carry out subsequent procedures. In addition, to facilitate the construction workers in adjusting the position and overall posture of the component and the mating surface by holding the operating bar and swinging the balance adjustment rod, an adjustable-angle reflector is installed at the bottom of the trapezoidal support reaction frame. Through the adjustable-angle reflector, the construction workers can use the principle of reflection to observe the alignment and distance between the bottom of the component and the mating surface, especially to verify whether the anchoring steel bars are aligned with the reserved holes below the component, thereby improving installation efficiency and construction safety.
[0031] This utility model discloses a long-arm support for safe load-bearing, stable displacement, and positioning. It features a simple structure, intuitive and easy operation, allowing even non-professionals to operate it, and flexible applications. Through an automatic control device, it can automatically adjust the position of the sliding counterweight box, ensuring that heavier objects can be moved with less force, improving operational convenience and safety. It effectively solves the problem of accurately hoisting and positioning large prefabricated concrete components while ensuring the safety of construction workers, ensuring an effective safe distance between workers and the hoisted components during the hoisting process. Furthermore, through automated adjustment, it significantly reduces manual labor intensity and improves hoisting accuracy and efficiency. The dynamic balancing function adapts to weight changes in the components during hoisting, reducing unexpected risks.
[0032] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A stable auxiliary load-bearing lifting boom, characterized in that, The system includes a trapezoidal support reaction frame and a balance adjustment assembly mounted on the trapezoidal support reaction frame. The balance adjustment assembly includes a balance adjustment operating rod, a control module, a triangular support assembly, and an adjustment cylinder connected to the triangular support assembly. The balance adjustment operating rod is installed inside the adjustment cylinder, with a support plate at one end and an operating crossbar at the other end. A pressure sensor is installed on the support plate. A movable counterweight assembly that can slide on the balance adjustment operating rod is provided between the operating crossbar and the adjustment cylinder. The movable counterweight assembly includes a counterweight box inserted on the balance adjustment operating rod, a stepper motor located inside the balance adjustment operating rod, and a lead screw connected to the stepper motor. A sliding assembly is provided on the upper part of the counterweight box, and the sliding assembly is fitted onto the lead screw. A support plate is provided at the top of the trapezoidal support reaction frame, and a rotating tray is provided in the middle of the support plate. The triangular support assembly is mounted on the rotating tray. The control module is located at the bottom of the support plate, and a grip force sensor is provided on the operating crossbar. The control module is electrically connected to the stepper motor, grip force sensor, and pressure sensor.
2. The stable auxiliary load-bearing hoisting boom according to claim 1, characterized in that: The sliding assembly includes two sets of sliders adapted to the balance adjustment lever, a sliding bearing installed in the slider, and a lead screw connecting post extending downward into the balance adjustment lever. The lead screw connecting post is provided with a lead screw threaded hole, and the lead screw passes through the lead screw threaded hole. The slider is provided with a plug-in hole, and the counterweight box is connected to the slider through the plug-in hole.
3. The stable auxiliary load-bearing hoisting boom according to claim 1, characterized in that: The stepper motor is installed inside the balance adjustment lever and fixed with screws.
4. The stable auxiliary load-bearing hoisting boom according to claim 1, characterized in that: The triangular support assembly is provided with a bearing at the top, and the adjusting cylinder is mounted on the bearing; the balance adjustment operating rod is provided with multiple sets of pin holes in the middle, and the adjusting cylinder is provided with pins.
5. The stable auxiliary load-bearing hoisting boom according to claim 1, characterized in that: The trapezoidal support reaction frame is equipped with adjustable height spiral supports at its four bottom corners.
6. The stable auxiliary load-bearing hoisting boom according to claim 1, characterized in that: The trapezoidal support reaction frame is equipped with an adjustable-angle reflector at its bottom.
7. The stable auxiliary load-bearing hoisting boom according to claim 1, characterized in that: The balance adjustment lever between the pallet and the adjusting cylinder is equipped with a standard scale.