Folding arm lifting device for construction site

Abstract

The utility model provides a folding arm hoisting device for a construction site, which comprises a bottom plate, the top surface of the bottom plate is welded with the bottom surface of a stand column, the top of the stand column is movably connected with one end of a folding arm I, the other end of the folding arm I is movably connected with one end of a folding arm II, and the other end of the folding arm II is connected with an electric hoist; a second rotation assembly is arranged at the joint of the first folding arm and the second folding arm, the first rotation assembly and the second rotation assembly are used for adjusting the rotation angle of the first folding arm and the rotation angle of the second folding arm respectively, and the limiting assembly is used for limiting the rotation angle of the first folding arm. The device can be remotely controlled, the labor intensity is low, and the construction safety is improved; the folding arm II can be folded towards the folding arm I, so that the folding arm II can adapt to different working environments, the working radius is increased, the lifting operation is carried out in a narrow space or a space with obstacles, and the working efficiency and the flexibility are improved; the rotary assembly enables the folding arm to have 360-degree rotation capability, and is high in precision and convenient to install and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a folding arm lifting device for construction sites. Background Art

[0002] Lifting equipment is needed to carry building materials or tools to designated locations at construction sites, to load and unload lifting containers or other cargoes at docks and ports, and to move parts from one workbench to another in workshops and factories.

[0003] Patent document CN213651671U discloses a lifting frame for construction sites, belonging to the technical field of lifting frames. The lifting frame for construction sites includes a frame and a body. The utility model provides a lifting frame for construction sites including a frame and a body. The body includes a lifting part and a lifting part, and the lifting part includes a jack, a lifting rod, a sleeve, a hydraulic rod and a lifting plate. When in use, the hydraulic rod fixes the lifting frame legs, and the hoist fixes the objects to be lifted. The jack is started, and the lifting plate fixedly connected to the output end of the jack drives the lifting rod to lift, and the lifting frame legs connected to the lifting rod are lifted at the same time. The lifting handwheel drives the worm to rotate, and the worm wheel meshing with the worm starts to rotate, the steel rope is tightened, and the steel rope is wound around the first pulley and the second pulley. The end of the steel rope is connected to the hoist, and the object begins to lift. The utility model is small and flexible, easy to move, does not require electricity, and avoids the difficulty of lifting objects caused by the inconvenience of power supply at the construction site.

[0004] In the above scheme, the lifting frame is not used by electricity, but needs to be operated by manual pressure rod, lifting hand wheel and rotating hand wheel. Each use consumes a lot of labor, has high work intensity, low safety, is not flexible enough, and has a low working radius. Therefore, it is necessary to provide a folding arm lifting device for construction sites to solve the shortcomings of the existing technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and provide a folding arm lifting device for construction sites.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A folding arm lifting device for construction sites comprises a base plate, the top surface of the base plate is welded to the bottom surface of a column, the top of the column is movably connected to one end of a folding arm one, the other end of the folding arm one is movably connected to one end of a folding arm two, the other end of the folding arm two is connected to an electric hoist, a slewing assembly one and a limiting assembly are provided at the connection between the folding arm one and the column, a slewing assembly two is provided at the connection between the folding arm one and the folding arm two, the slewing assembly one and the slewing assembly two are respectively used to adjust the rotation angles of the folding arm one and the folding arm two, and the limiting assembly is used to limit the rotation angle of the folding arm one.

[0008] The utility model is further configured as follows: a fixed plate 1 and a fixed plate 2 are provided on the top of the column, and a pair of rotating component 1 and a limiting component are provided. The bottom surface of the fixed plate 1 is connected to the top surface of the limiting component, the bottom surface of the limiting component is connected to the top surface of the rotating component 1, the top surface of the fixed plate 2 is connected to the bottom surface of the limiting component, the top surface of the limiting component is connected to the bottom surface of the rotating component 1, and the end of the folding arm 1 close to the column is movably connected to the two rotating components 1 respectively.

[0009] The utility model is further configured that a connecting plate 1 and a connecting plate 2 are welded to one end of the folding arm 1 away from the column, a pair of connecting plates 1 and 2 are provided for the rotating component 2, the top surface of the connecting plate 1 is connected to the bottom surface of the rotating component 2, the bottom surface of the connecting plate 2 is connected to the top surface of the rotating component 2, and the end of the folding arm 2 connected to the folding arm 1 is welded to a connecting plate 3 and a connecting plate 4, the bottom surface of the connecting plate 3 is connected to the top surface of the rotating component 2, and the top surface of the connecting plate 4 is connected to the bottom surface of the rotating component 2.

[0010] The utility model is further configured that a connecting plate five and a connecting plate six are welded to one end of the folding arm two away from the folding arm one, two ends of the connecting shaft respectively pass through the connecting plate five and the connecting plate six and extend to both sides, and the electric hoist is hung on the connecting shaft.

[0011] The utility model is further configured that the rotary assembly 1 and the rotary assembly 2 are the same and are both rotary driven.

[0012] The utility model is further configured that the positioning component comprises a positioning plate and a positioning pin, the positioning plate is evenly distributed with positioning holes, and the positioning pin is inserted in the positioning holes.

[0013] The utility model is further configured that a reinforcement member 1 is provided at the bottom of the column, a reinforcement member 2 is provided at the top of the column, and a reinforcement member 3 is provided at the folding arm 1. The reinforcement member 1, the reinforcement member 2 and the reinforcement member 3 can enhance the structural stability and structural strength of the components connected thereto.

[0014] Beneficial effects of the utility model:

[0015] 1. The utility model does not require manpower to operate the equipment, has low labor intensity, and can be remotely controlled, thereby improving construction safety.

[0016] 2. The folding arm 2 of the utility model can be folded toward the folding arm 1, so that it can adapt to different working environments and space limitations, increase the working radius, and perform lifting operations in a narrow space or a space with obstacles, thereby improving work efficiency and flexibility.

[0017] 3. The swivel assembly of the utility model enables the folding arm to have the ability to rotate 360 ​​degrees with high precision, compact structure, saving installation space, and easy installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is the front view of the utility model.

[0020] Figure 3 It is a schematic diagram of the pre-buried foundation of the utility model.

[0021] Figure 4 It is a schematic diagram of the utility model with additional movable components.

[0022] In the figure, 1. bottom plate, 2. column, 21. fixed plate 1, 22. fixed plate 2, 23. reinforcement 1, 24. reinforcement 2, 3. folding arm 1, 31. connecting plate 1, 32. connecting plate 2, 33. reinforcement 3, 4. folding arm 2, 41. connecting plate 3, 42. connecting plate 4, 43. connecting plate 5, 44. connecting plate 6, 5. electric hoist, 6. slewing component 1, 7. limit component, 8. slewing component 2, 9. connecting shaft. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0024] Embodiment 1:

[0025] In this embodiment, if Figure 1-3 As shown, the utility model proposes a folding arm lifting device for construction sites, including a base plate 1, the top surface of the base plate is welded to the bottom surface of a column 2, the top of the column is movably connected to one end of a folding arm 3, the other end of the folding arm 1 is movably connected to one end of a folding arm 2 4, the other end of the folding arm 2 is connected to an electric hoist 5, a swivel assembly 6 and a limit assembly 7 are provided at the connection between the folding arm 1 and the column, a swivel assembly 2 8 is provided at the connection between the folding arm 1 and the folding arm 2, the swivel assembly 1 and the swivel assembly 2 are respectively used for adjusting the rotation angles of the folding arm 1 and the folding arm 2, the limit assembly is used for limiting the rotation angle of the folding arm 1, the electric hoist is an existing product and existing technology, can be replaced according to the hoisting object, and will not be elaborated here.

[0026] In this example, when the foundation quality is good, the base plate can be directly fixed to the concrete foundation by anchor bolts. At the same time, since it does not need to be moved, it is convenient to maintain the folding arm lifting device. When the foundation quality is poor, it is necessary to embed the foundation in advance, and then connect the base plate to the embedded foundation through anchor bolts to enhance stability.

[0027] In this embodiment, it is further configured that a fixed plate 1 21 and a fixed plate 22 are provided on the top of the column, and a pair of rotating component 1 and a limiting component are provided. The bottom surface of the fixed plate 1 is connected to the top surface of the limiting component, the bottom surface of the limiting component is connected to the top surface of the rotating component 1, the top surface of the fixed plate 2 is connected to the bottom surface of the limiting component, the top surface of the limiting component is connected to the bottom surface of the rotating component 1, and the end of the folding arm 1 close to the column is movably connected to the two rotating components 1 respectively.

[0028] In this embodiment, it is further configured that a connecting plate 1 31 and a connecting plate 2 32 are welded to one end of the folding arm 1 away from the column, and a pair of connecting plates 1 and 31 are provided at the rotating component 2. The top surface of the connecting plate 1 is connected to the bottom surface of the rotating component 2, and the bottom surface of the connecting plate 2 is connected to the top surface of the rotating component 2. A connecting plate 3 41 and a connecting plate 4 42 are welded to the end of the folding arm 2 connected to the folding arm 1, and the bottom surface of the connecting plate 3 is connected to the top surface of the rotating component 2, and the top surface of the connecting plate 4 is connected to the bottom surface of the rotating component 2.

[0029] In this embodiment, it is further configured that a connecting plate 5 43 and a connecting plate 6 44 are welded to one end of the folding arm 2 away from the folding arm 1, and two ends of the connecting shaft respectively pass through the connecting plate 5 and the connecting plate 6 to extend to both sides, and the electric hoist is hung on the connecting shaft.

[0030] In this embodiment, it is further configured that the slewing assembly 1 and the slewing assembly 2 are the same, and both are slewing drives. The slewing drive enables the folding arm to have the ability to rotate 360 ​​degrees. The core component of the slewing drive adopts a slewing bearing, which makes its installation process relatively simple and easy to maintain. At the same time, the rotary reducer adopts a slewing bearing as the driven part of the reducer, which can achieve unlimited circular rotation and deceleration. It has the advantages of high precision, compact structure, and large load-bearing capacity. It can be used in harsh working conditions. The slewing drive is an existing product and existing technology, which will not be described in detail here.

[0031] In the present embodiment, it is further configured that the positioning component includes a positioning plate and a positioning pin, the positioning plate has positioning holes evenly distributed thereon, the positioning pin is inserted in the positioning holes, the positioning pin is not drawn in the figure, the two positioning plates are respectively arranged on the bottom surface of the fixed plate one and the top surface of the fixed plate two, and the positioning pin is inserted in the positioning holes of the positioning plate to limit the rotation angle of the folding arm one, and two positioning plates are set. If the positioning holes of the two positioning plates are set correspondingly, the limiting function thereof can be enhanced; if the positioning holes of the two positioning plates are staggered, the limiting rotation angle of the folding arm one can be increased, avoiding too many positioning holes on a single positioning plate, thereby affecting its structural strength and limiting effect.

[0032] In this embodiment, it is further configured that a reinforcement member 23 is provided at the bottom of the column, and the side and bottom surfaces of the reinforcement member 1 are respectively welded to the bottom of the column and the bottom plate, which can strengthen the connection strength between the bottom of the column and the bottom plate; a reinforcement member 24 is provided at the top of the column, and the top and side surfaces of the reinforcement member 2 are respectively welded to the fixed plate 1 or the fixed plate 2 and the column, which can strengthen the connection strength between the fixed plate 1 or the fixed plate 2 and the column; a reinforcement member 3 33 is provided at the folding arm 1, and the top and side surfaces of the reinforcement member 3 are respectively welded to the lateral end and the vertical section of the folding arm 1, which can strengthen the connection strength between the lateral end and the vertical section of the folding arm 1; the reinforcement members 1, 2 and 3 can enhance the structural stability and structural strength of the components connected thereto.

[0033] Embodiment 2:

[0034] In this embodiment, if Figure 4 As shown, a moving component can be set at the bottom of the base plate, and the moving component includes a universal wheel and a mounting plate. The universal wheel is installed at the four corners of the bottom of the mounting plate. The universal wheel has a locking function. The mounting plate is bolted to the base plate. The mounting plate is counterweighted according to the lifting weight and arm length of the folding arm crane to prevent the folding arm crane from overturning, and at the same time, the folding arm crane has moving and locking functions.

[0035] Hydraulic components can also be set at the four corners of the bottom of the moving component. When the folding arm crane moves to the specified position, the hydraulic component extends so that its end contacts the ground or the support, especially in an inclined environment, to provide auxiliary support and level the column.

[0036] The working principle of the folding arm lifting device is as follows: fix the object to be lifted on the electric hoist, control the electric hoist to rise, and if the object transportation position is within the range of folding arm two as the center and folding arm one as the radius, only folding arm two can be controlled to rotate, and then folding arm one is fine-tuned; if the object transportation position is within the range of folding arm one as the center and the sum of the lengths of folding arm one and folding arm two as the radius, then folding arm one is controlled to rotate, and then folding arm two is fine-tuned; when there is an obstacle within the range of the radius of folding arm one with the column as the center, folding arm one can be limited by a limiting component to prevent folding arm one from hitting the obstacle when the rotation angle is too large.

[0037] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "connection" and the like should be understood in a broad sense, for example, "connection" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

Claims

1. A folding arm lifting device for construction sites, comprising a bottom plate, the top surface of the bottom plate being welded to the bottom surface of a column, characterized in that: The top of the column is movably connected to one end of folding arm one, the other end of folding arm one is movably connected to one end of folding arm two, the other end of folding arm two is connected to the electric hoist, a swivel assembly one and a limit assembly are provided at the connection between folding arm one and the column, a swivel assembly two is provided at the connection between folding arm one and folding arm two, the swivel assembly one and the swivel assembly two are used for adjusting the rotation angles of folding arm one and folding arm two respectively, and the limit assembly is used for limiting the rotation angle of folding arm one.

2. A folding arm lifting device for construction sites according to claim 1, characterized in that: A fixed plate 1 and a fixed plate 2 are provided on the top of the column, and a pair of rotating component 1 and a limiting component are provided. The bottom surface of the fixed plate 1 is connected to the top surface of the limiting component, the bottom surface of the limiting component is connected to the top surface of the rotating component 1, the top surface of the fixed plate 2 is connected to the bottom surface of the limiting component, the top surface of the limiting component is connected to the bottom surface of the rotating component 1, and the end of the folding arm 1 close to the column is movably connected to the two rotating components 1 respectively.

3. A folding arm lifting device for construction sites according to claim 1, characterized in that: A connecting plate 1 and a connecting plate 2 are welded to one end of the folding arm 1 away from the column, and a pair of connecting plates are provided for the rotating component 2. The top surface of the connecting plate 1 is connected to the bottom surface of the rotating component 2, and the bottom surface of the connecting plate 2 is connected to the top surface of the rotating component 2. A connecting plate 3 and a connecting plate 4 are welded to the end of the folding arm 2 connected to the folding arm 1, and the bottom surface of the connecting plate 3 is connected to the top surface of the rotating component 2, and the top surface of the connecting plate 4 is connected to the bottom surface of the rotating component 2.

4. A folding arm lifting device for construction sites according to claim 1, characterized in that: A connecting plate five and a connecting plate six are welded to one end of the folding arm two away from the folding arm one, two ends of the connecting shaft respectively pass through the connecting plate five and the connecting plate six and extend to both sides, and the electric hoist is hung on the connecting shaft.

5. A folding arm lifting device for construction sites according to claim 1, characterized in that: The rotary assembly 1 is the same as the rotary assembly 2, and both are rotary drives.

6. A folding arm lifting device for construction sites according to claim 1, characterized in that: The positioning component comprises a positioning plate and a positioning pin. The positioning plate is evenly provided with positioning holes, and the positioning pin is inserted into the positioning holes.

7. A folding arm lifting device for construction sites according to claim 1, characterized in that: A reinforcement member 1 is provided at the bottom of the column, a reinforcement member 2 is provided at the top of the column, and a reinforcement member 3 is provided at the folding arm 1. The reinforcement members 1, 2 and 3 can enhance the structural stability and strength of the components connected thereto.

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