Stable type auxiliary load-bearing hoisting long arm

Abstract

The invention relates to the technical field of buildings, in particular to a stable type auxiliary load-bearing hoisting long arm which comprises a trapezoid supporting reaction frame and a balance adjusting assembly installed on the trapezoid supporting reaction frame, and the balance adjusting assembly comprises a balance adjusting operation rod, a control module, a triangular supporting assembly and an adjusting cylinder connected with the triangular supporting assembly. The balance adjusting operation rod is installed in the adjusting cylinder, a supporting plate is arranged at the end, penetrating through the adjusting cylinder, of the balance adjusting operation rod, and a control transverse rod is arranged at the other end. A movable counterweight assembly capable of sliding on the balance adjustment operating rod is arranged on the balance adjustment operating rod between the control cross rod and the adjusting cylinder; the movable counterweight assembly comprises a counterweight box inserted in the balance adjusting operation rod in a penetrating mode, a stepping motor located in the balance adjusting operation rod and a lead screw connected with the stepping motor. The sliding weight box is simple in structure, visual, simple and convenient to operate and flexible to apply, the position of the sliding weight box can be automatically adjusted, and it is ensured that heavy objects can be moved with small force.

Description

Technical Field

[0001] The present invention relates to the field of construction technology, and particularly to a stable auxiliary load-bearing lifting long arm. Background Art

[0002] PC buildings, also known as precast concrete buildings, are composed of precast concrete components such as wall panels, composite floor slabs, stairs, and balconies. After hoisting at the construction site, a structural form is formed by casting the vertical connection joints between the wall panels in situ, connecting the main vertical stressed steel bars between the upper and lower wall panels with grouting sleeves, and casting the composite floor slabs and beams in situ to form a whole.

[0003] When the concrete component is hoisted to the predetermined position, the construction workers need to check whether the anchoring steel bars are aligned with the reserved holes under the component between the component and the joint surface, and at the same time manually adjust the position of the suspended component to straighten the component. During the process, the construction workers need to repeatedly lie on the ground to check whether the anchoring steel bars are aligned with the reserved holes under the component between the component and the joint surface, or hold a plane mirror to check whether the anchoring steel bars are aligned with the reserved holes under the component. At the same time, when hoisting a component with a large weight, a single lifting long arm requires the operator to use a greater force to achieve the transfer. Therefore, each hoisting and positioning of the component is a high-risk construction operation, especially the safety problem of the construction workers is more prominent. How to achieve high-quality and stable component hoisting during the operation is the key to ensuring the safety of construction workers and concrete components. Summary of the Invention

[0004] The purpose of the present invention is to provide a stable auxiliary load-bearing lifting long arm, which has a simple structure, intuitive and convenient operation, flexible application, and can realize the auxiliary accurate hoisting and positioning of large concrete precast components, ensuring the safety of construction workers. At the same time, by adding an automatic control device, the present invention can automatically adjust the position of the sliding counterweight box, ensuring that heavier objects can be moved with less force, further improving the convenience and safety of the operation.

[0005] The technical solution adopted to achieve the above object is a stable auxiliary load-bearing lifting long arm, which includes a trapezoidal support reaction frame and a balance adjustment component installed on the trapezoidal support reaction frame. The balance adjustment component includes a balance adjustment operating rod, a control module, a triangular support component, and an adjustment cylinder connecting the triangular support component. The balance adjustment operating rod is installed in 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 a control crossbar. A pressure sensor is provided on the support plate. An adjustable counterweight component that can slide on the balance adjustment operating rod is provided on the balance adjustment operating rod between the control crossbar and the adjustment cylinder. The adjustable counterweight component includes a counterweight box inserted on the balance adjustment operating rod, a stepping motor located inside the balance adjustment operating rod, and a lead screw connected to the stepping motor. A sliding component is provided on the upper part of the counterweight box, and the sliding component is sleeved on 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 component is installed on the rotating tray. The control module is located at the bottom of the support plate, and a grip sensor is provided on the control crossbar. The control module is electrically connected to the stepping motor, the grip sensor, and the pressure sensor.

[0006] Further, in order to accurately control the displacement distance of the counterweight box, the sliding component includes two groups of sliders adapted to the balance adjustment operating rod, sliding bearings installed in the sliders, and a lead screw connecting column extending downward into the balance adjustment operating rod. A lead screw threaded hole is provided on the lead screw connecting column, and the lead screw penetrates into the lead screw threaded hole. A plug hole is provided on the slider, and the counterweight box is connected to the slider through the plug hole. A plug hole is provided on the slider, and the counterweight box is connected to the slider through the plug hole.

[0007] Further, the stepping motor is installed inside the balance adjustment operating rod and fixed by screws.

[0008] Further, in order to implement the lever principle, a bearing is provided at the top of the triangular support component, and the adjustment cylinder is installed on the bearing. Multiple groups of pin holes are arranged in the middle of the balance adjustment operating rod, and a pin is provided on the adjustment cylinder.

[0009] Further, in order to achieve the balance between the trapezoidal support reaction frame and the ground and ensure that the support plate at the top of the trapezoidal support reaction frame remains horizontal, adjustable height screw supports are provided at the four corners of the bottom of the trapezoidal support reaction frame.

[0010] Further, in order to facilitate the construction workers to observe the alignment state between the bottom of the component to be lifted and the joint surface, a mirror with adjustable angle is provided at the bottom of the trapezoidal support reaction frame.

[0011] Further, standard scales are provided on the balance adjustment operating rod between the support plate and the adjustment cylinder.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention relates to a safe load-bearing, stable displacement and positioning auxiliary support long arm, which has a simple structure, intuitive and convenient operation, and can be operated by non-professionals, with flexible application; through the automatic control device, the position of the sliding counterweight box can be automatically adjusted to ensure that heavier objects can be moved with less force, improving the convenience and safety of operation; effectively solving the problem of accurately hoisting and positioning large traditional concrete prefabricated components and ensuring the safety of construction workers, and realizing that during the hoisting operation, the construction workers and the hoisted components can maintain an effective safety distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below with reference to the accompanying drawings.

[0014] Figure 1 FIG. is a schematic diagram of the overall structure of a stable type auxiliary load-bearing hoisting long arm of the present invention;

[0015] Figure 2 FIG. is a schematic diagram of the balance adjustment assembly in a stable type auxiliary load-bearing hoisting long arm of the present invention Figure 1 ;

[0016] Figure 3 FIG. is a schematic diagram of the balance adjustment assembly in a stable type auxiliary load-bearing hoisting long arm of the present invention Figure 2 ;

[0017] Figure 4 FIG. is a schematic diagram of the balance adjustment assembly in a stable type auxiliary load-bearing hoisting long arm of the present invention Figure 3 ;

[0018] Figure 5 FIG. is a schematic diagram of the balance adjustment assembly in a stable type auxiliary load-bearing hoisting long arm of the present invention Figure 4 ;

[0019] Figure 6 FIG. is a sectional view of the slider installed on the balance adjustment operating rod in a stable type auxiliary load-bearing hoisting long arm of the present invention;

[0020] Figure 7 FIG. is a schematic diagram of the balance adjustment assembly in a stable type auxiliary load-bearing hoisting long arm of the present invention Figure 5 .

[0021] In the figure: trapezoidal support reaction frame 1, balance adjustment component 2, balance adjustment operating rod 3, control module 4, triangular support component 5, adjustment cylinder 6, support plate 31, control cross bar 32, movable counterweight component 33, counterweight box 331, stepping motor 332, lead screw 333, sliding component 334, supporting plate 11, rotating tray 12, grip force sensor 321, slider 3341, sliding bearing 3342, insertion hole 3343, screw 34, bearing 51, pin hole 35, pin 61, adjustable height screw support 13, reflector 14, standard scale 36, pressure sensor 311, lead screw connection column 3344, lead screw threaded hole 3345. Detailed implementation manners

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0024] The following further describes a stable auxiliary load-bearing hoisting long arm according to the present invention with reference to the drawings:

[0025] As Figures 1-7A stable auxiliary load-bearing hoisting long arm shown in the figure includes a trapezoidal support reaction frame 1 and a balance adjustment component 2 installed on the trapezoidal support reaction frame 1. The balance adjustment component 2 includes a balance adjustment operating rod 3, a control module 4, a triangular support component 5, and an adjustment cylinder 6 connecting the triangular support component 5. The balance adjustment operating rod 3 is installed in the adjustment cylinder 6. One end of the balance adjustment operating rod 3 passing through the adjustment cylinder 6 is provided with a support plate 31, and the other end is provided with a control crossbar 32. A pressure sensor 311 is provided on the support plate 31. An adjustable counterweight component 33 that can slide on the balance adjustment operating rod 3 is provided on the balance adjustment operating rod 3 between the control crossbar 32 and the adjustment cylinder 6. The adjustable counterweight component 33 includes a counterweight box 331 inserted on the balance adjustment operating rod 3, a stepping motor 332 located inside the balance adjustment operating rod 3, and a lead screw 333 connected to the stepping motor 332. The stepping motor 332 is installed inside the balance adjustment operating rod 3 and fixed from the outside by screws 34. A sliding component 334 is provided on the upper part of the counterweight box 331. The sliding component 334 is sleeved on the lead screw 333. The sliding component 334 includes two groups 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 before and after. A sliding bearing 3342 is provided inside the slider 3341. The sliding bearing contacts the balance adjustment operating rod to provide displacement lubrication characteristics. It also includes a lead screw connection column 3344 extending downward into the balance adjustment operating rod. A lead screw threaded hole 3345 is provided on the lead screw connection column. The lead screw penetrates into the lead screw threaded hole 3345. When the lead screw rotates in the lead screw threaded hole 3345, it will drive the sliding component to displace, and the front and back displacement is realized according to the forward or reverse rotation of the lead screw. A plug hole 3343 is provided on the slider 3341. The counterweight box 331 is connected to the slider 3341 through the plug hole 3343 to drive the counterweight box 331 to displace on the balance adjustment operating rod.

[0026] In this embodiment, a supporting plate 11 is provided at the top of the trapezoidal support reaction frame 1, and a rotating tray 12 is provided in the middle of the supporting plate 11. Its function is to swing horizontally to adjust the position when adjusting the position between the large hoisted concrete prefabricated component and the joint surface. The triangular support assembly 5 is installed on the rotating tray 12. A bearing 51 is provided at the top of the triangular support assembly 5, and the adjusting cylinder 6 is installed on the bearing 51. The balance adjusting operating rod is sleeved in the adjusting cylinder 6. After installation, it is ensured that the balance adjusting operating rod can use the lever principle to pry up and down with the bearing as the point in the triangular support assembly, and its function is to swing vertically to adjust the position when adjusting the position between the large hoisted concrete prefabricated component and the joint surface; A plurality of groups of pin holes 35 are arranged in the middle of the balance adjusting operating rod 3, and a pin 61 is provided on the adjusting cylinder 6. The balance adjusting operating rod 3 and the adjusting cylinder 6 can be fixed to each other through the pin; The control module 4 is located at the bottom of the supporting plate 11, and a grip force sensor 321 is provided on the operating cross bar 32; The control module 4 is electrically connected to the stepping motor 332, the grip force sensor 321, and the pressure sensor 311. The control module also includes a controller (not labeled). The controller (not labeled) has a built-in algorithm. According to the data of the force on the pallet and the position of the counterweight box detected in real time, combined with the lever principle, the target position of the counterweight box is dynamically calculated, and precise adjustment is achieved through PID control. Through the coordinated work of the pressure sensor, the grip force sensor, the controller (not labeled), and the stepping motor, it has a dynamic balance function, real-time monitors the stress state of the hoisted component, and automatically adjusts the position of the counterweight box to ensure that the balance adjusting operating rod is always in the optimal moment balance state. The operator only needs to make fine adjustments through the operating cross bar to easily control the hoisting posture of the heavy component, greatly reducing the operating intensity and improving safety and operation efficiency.

[0027] In this embodiment, adjustable height screw supports 13 are provided at the four corners of the bottom of the trapezoidal support reaction frame 1 to balance the trapezoidal support reaction frame with the ground and ensure that the supporting plate at the top of the trapezoidal support reaction frame remains horizontal.

[0028] In this embodiment, a mirror 14 with an adjustable angle is provided at the bottom of the trapezoidal support reaction frame 1. Through the mirror, construction workers can use the reflection principle to observe the alignment position and distance between the bottom of the component to be hoisted and the joint surface, especially to check whether the anchoring steel bars are aligned with the reserved holes below the component. The reflection angle of the mirror can be adjusted according to actual needs.

[0029] In this embodiment, in order to improve efficiency, the weight of the hoisted object is estimated in the early stage of use, and then according to the lever principle, the lengths of the front and rear ends of the balance adjusting operating rod 3 sleeved in the adjusting cylinder 6 are adjusted in advance. A standard scale 36 is provided on the balance adjusting operating rod 3 between the pallet 31 and the adjusting cylinder 6, and quick adjustment can be achieved through the standard scale.

[0030] Working principle: Place the present invention on a relatively flat ground on one side of the joint surface of the component to be hoisted, and reserve a certain operating distance. The construction workers perform various operations on the side of the balance adjustment operating rod with the operating crossbar. First, adjust the adjustable-height screw supports at the four corners of the bottom of the trapezoidal support reaction frame to keep the whole trapezoidal support reaction frame horizontal, especially to keep the supporting plate at the top of the trapezoidal support reaction frame horizontal, so as to ensure that the balance adjustment operating rod of the present invention operates on a stable horizontal plane. Next, when the crane at the construction site hoists the component to be hoisted to a height not greater than 0.5 meters above the joint surface, the construction workers use the operating crossbar to swing the balance adjustment operating rod so that the L-shaped support plate holds the bottom edge of the hoisting component. While fitting the bottom edge of the hoisting component, the pressure sensor detects the weight borne by the L-shaped support plate and transmits the signal to the controller. The controller controls the stepping motor to drive the counterweight box to slide on the balance adjustment operating rod according to the feedback signal of the sensor, automatically adjusts the position of the counterweight box to ensure the balance of the balance adjustment operating rod. Counterweight materials such as sandbags and concrete blocks are added to the counterweight box according to the weight of the hoisting component. The crane slowly lowers the component to be hoisted, and at the same time, the construction workers hold the operating crossbar and swing the balance adjustment operating rod appropriately to keep the component to be hoisted aligned with the joint surface and the overall posture stable during the slow descent. When the bottom of the component to be hoisted is less than 0.05 meters away from the joint surface, the construction workers hold the operating crossbar to make the L-shaped support plate of the balance adjustment operating rod disengage from the component. At this time, the component is safely hoisted and positioned, and the construction workers can approach for temporary fixing of the component and subsequent processes. In addition, in order to facilitate the construction workers to hold the operating crossbar and swing the balance adjustment operating rod to adjust the position of the component to be hoisted and the joint surface and the overall posture, a mirror with adjustable angle is provided at the bottom of the trapezoidal support reaction frame. Through the mirror with adjustable angle, the construction workers can use the reflection principle to observe the alignment position and distance between the bottom of the component to be hoisted and the joint surface, especially to check whether the anchor bars are aligned with the reserved holes below the component, improving the installation efficiency and construction safety.

[0031] The present invention relates to a safe load-bearing, stable displacement and positioning auxiliary support long arm, which has a simple structure, intuitive and simple operation, and can be operated by non-professionals, with flexible application. Through the automatic control device, it can automatically adjust the position of the sliding counterweight box to ensure that heavier objects can be moved with less force, improving the convenience and safety of operation. It effectively solves the problem of accurately hoisting and positioning traditional large concrete prefabricated components and ensuring the safety of construction workers, and realizes that during the hoisting operation, the construction workers and the hoisted component can maintain an effective safe distance. And through automatic adjustment, it significantly reduces the manual operation intensity, improves the hoisting accuracy and efficiency. The dynamic balance function can adapt to the weight change of the component during the hoisting process, reducing sudden risks.

[0032] The above has described an embodiment of the present invention in detail, but the above content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made in accordance with the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A stable auxiliary load-bearing and hoisting long arm, characterized in that It includes a trapezoidal support reaction frame and a balance adjustment component installed on the trapezoidal support reaction frame. The balance adjustment component includes a balance adjustment operating rod, a control module, a triangular support component, and an adjustment cylinder connecting the triangular support component. The balance adjustment operating rod is installed in 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 a control crossbar; a pressure sensor is provided on the support plate; an adjustable weight component that can slide on the balance adjustment operating rod is provided on the balance adjustment operating rod between the control crossbar and the adjustment cylinder; the adjustable weight component includes a weight box inserted on the balance adjustment operating rod, a stepping motor located inside the balance adjustment operating rod, and a lead screw connected to the stepping motor; a sliding component is provided on the upper part of the weight box, and the sliding component is sleeved on the lead screw; a support plate is provided at the top of the trapezoidal support reaction frame, a rotating tray is provided in the middle of the support plate, and the triangular support component 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 control crossbar; the control module is electrically connected to the stepping motor, the grip force sensor, and the pressure sensor respectively.

2. The stable auxiliary load-bearing hoisting long arm according to claim 1, characterized in that: The sliding component includes two groups of sliders adapted to the balance adjustment operating rod, sliding bearings installed in the sliders, and a lead screw connecting column extending downward into the balance adjustment operating rod. A lead screw threaded hole is provided on the lead screw connecting column, and the lead screw penetrates into the lead screw threaded hole; a plug hole is provided on the slider, and the weight box is connected to the slider through the plug hole.

3. A stable auxiliary load-bearing hoisting long arm according to claim 1, characterized in that: The stepping motor is installed inside the balance adjustment operating rod and fixed by screws.

4. A stable auxiliary load-bearing lifting long arm according to claim 1, characterized in that: A bearing is provided at the top of the triangular support component, and the adjustment cylinder is installed on the bearing; a plurality of groups of pin holes are arranged in the middle of the balance adjustment operating rod, and a pin is provided on the adjustment cylinder.

5. A stable auxiliary load-bearing lifting long arm according to claim 1, characterized in that: Adjustable height screw supports are provided at the four corners of the bottom of the trapezoidal support reaction frame.

6. A stable auxiliary load-bearing lifting long arm according to claim 1, characterized in that: A mirror with an adjustable angle is provided at the bottom of the trapezoidal support reaction frame.

7. The stable auxiliary load-bearing hoisting long arm according to claim 1, characterized in that: Standard scales are provided on the balance adjustment operating rod between the support plate and the adjustment cylinder.

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