A basement floor construction steel bar welded mesh adjustable spacing special lifting appliance

Abstract

The utility model provides a basement bottom plate construction steel bar welded net adjustable interval special hoist relates to building construction hoist technical field, including hoist crossbeam, the inside of hoist crossbeam and the outside of hoist crossbeam are commonly provided with small size adjusting mechanism, small size adjusting mechanism includes extension frame, the inner wall of extension frame is fixedly connected with the outer surface of hoist crossbeam, the inside of hoist crossbeam and the inside of extension frame are commonly connected with positive and negative screw rod rotation. This one basement bottom plate construction steel bar welded net adjustable interval special hoist, utilizes extension frame to make two mobile sleeves along the direction of far away or close together, the position of two guide slide rails under two mobile sleeves is adjusted conveniently, and because the sliding movement slider in guide slide rail is adjusted, the lifting point position of this hoist is adjusted, the sliding movement slider in guide slide rail is positioned using first positioning pin, to make the hoist convenient for hoisting the steel bar welded net of smaller different size.

Description

Technical Field

[0001] This utility model relates to a special lifting tool with adjustable spacing, specifically a special lifting tool with adjustable spacing for welded steel mesh for basement floor construction, belonging to the field of building construction lifting tool technology. Background Technology

[0002] Lifting equipment is a device used in lifting machinery to lift heavy objects. The most commonly used lifting equipment for lifting packaged items is the hook. Other types include lifting rings, lifting suction cups, clamps, and forks. In the construction of basement floor slabs, the welded steel mesh needs to be laid precisely according to the design spacing, which requires the use of special lifting equipment to lift the welded steel mesh.

[0003] A rebar mesh lifting device disclosed in Chinese Patent Application Publication CN216863413U includes a gantry crane and an electric winch slidably mounted on the gantry crane. Two positioning components for positioning the rebar mesh are slidably and symmetrically mounted on the side of the gantry crane, and a driving component for driving the positioning components is provided on the outside of the positioning components. A lubrication component for lubricating the driving components is also provided on the gantry crane. Using this technical solution, the rebar mesh is limited by the cooperation of the above devices, preventing it from swinging in any direction during the lifting process, thus eliminating accidents caused by the swinging of the rebar mesh. However, the lifting point spacing of this device is fixed, only suitable for a single specification of rebar mesh. When different specifications of rebar mesh need to be lifted, different sizes of lifting devices need to be used, increasing equipment investment costs and reducing the ease of use of the device.

[0004] Therefore, a special lifting tool with adjustable spacing for welded steel mesh used in basement floor slab construction is proposed here. Utility Model Content

[0005] This utility model proposes a special lifting tool for adjustable spacing of welded steel mesh for basement floor construction, in order to solve the problem of fixed spacing and poor adaptability in the existing technology.

[0006] This utility model is achieved through the following technical solution: a special lifting tool for adjustable spacing of welded wire mesh for basement floor construction, including a lifting tool beam, wherein a small-size adjustment mechanism is provided both inside and outside the lifting tool beam; The small-size adjustment mechanism includes an extension frame. The inner wall of the extension frame is fixedly connected to the outer surface of the lifting beam. The interior of the lifting beam and the interior of the extension frame are rotatably connected to a positive and negative threaded rod. The outer surface of the positive and negative threaded rod is threaded with two movable sleeves. Each movable sleeve is slidably connected to the interior of the extension frame. The bottom surface of each movable sleeve is fixedly connected to a guide rail. One side and the other side of each guide rail are provided with equidistantly arranged limiting holes. The interior of each guide rail is slidably connected with two movable sliders. The interior of each set of movable sliders is engaged with a first positioning pin. The ends of the two sets of first positioning pins that are close to each other pass through the two limiting holes and the movable sliders respectively and extend to the bottom of the extension frame. A large-size adjustment component is provided on the outside of the lifting beam, and a lifting clamping component is provided below the small-size adjustment mechanism and below the large-size adjustment component.

[0007] The large-size adjustment assembly includes two sets of extension crossbars, which are slidably connected to the interior of two movable sleeves. Each movable sleeve has a fixing hole on its upper surface and bottom surface. Each set of extension crossbars has equidistant movable holes on its upper surface. A second positioning pin is engaged inside one set of movable holes. The bottom ends of the two sets of second positioning pins pass through two fixing holes and one set of movable holes in sequence and extend to the bottom of the two movable sleeves.

[0008] The hoisting clamping assembly includes two sets of extension steel cables. The top ends of the two sets of extension steel cables are fixedly connected to the bottom surfaces of the two sets of movable sliders and the bottom surfaces of the two sets of extension crossbars, respectively. The bottom end of each set of extension steel cables is fixedly connected to an upper anti-slip clamping plate.

[0009] Below each set of upper anti-slip clamping plates, there is a lower anti-slip clamping plate. The interior of each set of upper anti-slip clamping plates and the interior of each set of lower anti-slip clamping plates are threaded with clamping bolts. The bottom ends of the two sets of clamping bolts pass through the two sets of upper anti-slip clamping plates and the two sets of lower anti-slip clamping plates in sequence and extend to the bottom of the two sets of lower anti-slip clamping plates.

[0010] The end of the positive and negative threaded rod away from the lifting beam is fixedly connected to a torsion disc, and a torsion lug is fixedly connected to one side of the torsion disc.

[0011] Two baffles are fixedly connected to the outer surface of each movable sleeve, and the two baffles are respectively in contact with the two sides of the extension frame.

[0012] This utility model provides a special lifting tool for adjustable spacing of welded wire mesh for basement floor construction, which has the following beneficial effects: This is a special lifting tool for adjustable spacing of welded wire mesh for basement floor construction. It utilizes an extension frame fixed to the outside of the lifting beam to allow two movable sleeves to slide inside. By manually twisting the positive and negative threaded rods, the rods can be rotated within the two movable sleeves, facilitating their movement together in opposite directions. This allows for easy adjustment of the positions of the two guide rails beneath the sleeves. The lifting point position of the lifting tool can be adjusted by sliding a slider within the guide rails. A first positioning pin positions the slider within the guide rails, making it convenient to lift welded wire mesh of different sizes.

[0013] This is a special lifting tool for adjustable spacing of welded wire mesh for basement floor construction. It can use two extension crossbars that slide within a movable sleeve to easily adjust the position of the lifting point. The second positioning pin positions the extension crossbars that slide within the movable sleeve, making it convenient to use the lifting tool to lift welded wire mesh of different sizes. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the lifting beam of this utility model; Figure 2 This is a bottom view of the extension frame of this utility model. Figure 3 This is a schematic diagram of the structure of the guide rail of this utility model; Figure 4 This is a schematic diagram of the structure of the extension crossbar of this utility model; Figure 5 This is a schematic diagram of the movable slider of this utility model.

[0015] Explanation of reference numerals in the attached figures 1. Lifting beam; 2. Small size adjustment mechanism; 201. Extension frame; 202. Positive and negative threaded rod; 203. Moving sleeve; 204. Guide slide rail; 205. Limiting hole; 206. Moving slider; 207. First positioning pin; 3. Large-size adjustment assembly; 301. Extension crossbar; 302. Moving locking hole; 303. Fixing locking hole; 304. Second positioning pin; 4. Lifting and clamping assembly; 401. Extension steel cable; 402. Upper anti-slip clamping plate; 403. Clamping bolts; 404. Lower anti-slip clamping plate; 5. Torque disc; 6. Torque lug; 7. Baffle frame. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0017] Please see Figures 1-5 This utility model embodiment provides a special lifting tool for adjustable spacing of welded wire mesh for basement floor construction, including a lifting tool beam 1, and a small-size adjustment mechanism 2 is provided both inside and outside the lifting tool beam 1; Please refer to this carefully. Figure 1 and Figure 2 The small-size adjustment mechanism 2 includes an extension frame 201. The inner wall of the extension frame 201 is fixedly connected to the outer surface of the lifting beam 1. The inside of the lifting beam 1 and the inside of the extension frame 201 are rotatably connected to a positive and negative threaded rod 202. A torsion disc 5 is fixedly connected to one end of the positive and negative threaded rod 202 away from the lifting beam 1. A torsion lug 6 is fixedly connected to one side of the torsion disc 5. By manually pinching the torsion lug 6, the positive and negative threaded rod 202 can be rotated through the torsion disc 5, thereby enabling the positive and negative threaded rod 202 to rotate stably inside the lifting beam 1 and the extension frame 201.

[0018] Please refer to this carefully. Figure 1 and Figure 3 Two movable sleeves 203 are threadedly connected to the outer surface of the positive and negative threaded rod 202. Each movable sleeve 203 is slidably connected to the inside of the extension frame 201. Two retaining frames 7 are fixedly connected to the outer surface of each movable sleeve 203. The side of the two sets of retaining frames 7 that are close to each other are in contact with the two sides of the extension frame 201. By using the two retaining frames 7 fixed to the outside of the movable sleeve 203, the movable sleeve 203 sliding inside the extension frame 201 can be limited, thereby improving the movement stability of the movable sleeve 203.

[0019] Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 and Figure 5 Each movable sleeve 203 has a guide rail 204 fixedly connected to its bottom surface. Each guide rail 204 has equidistantly arranged limiting holes 205 on one side and the other side. Each guide rail 204 has two movable sliders 206 slidably connected inside. Each set of movable sliders 206 has a first positioning pin 207 locked inside. The two sets of first positioning pins 207 pass through the two limiting holes 205 and the movable sliders 206 respectively and extend to the bottom of the extension frame 201. Please refer to this carefully. Figure 1 , Figure 2 , Figure 3 and Figure 4 A large-size adjustment assembly 3 is provided on the outside of the lifting beam 1. A lifting clamping assembly 4 is provided below both the small-size adjustment mechanism 2 and the large-size adjustment assembly 3. The large-size adjustment assembly 3 includes two sets of extension crossbars 301, which are slidably connected to the interiors of two movable sleeves 203. Each movable sleeve 203 has a fixing hole 303 on its upper and bottom surfaces. Each set of extension crossbars 301 has equally spaced movable locking holes 302 on its upper surface. A second positioning pin 304 is engaged inside a set of movable locking holes 302. The bottom ends of the two sets of second positioning pins 304 pass through two fixed locking holes 303 and one set of movable locking holes 302 respectively and extend to the bottom of the two movable sleeves 203. The extension crossbar 301 slides inside the movable sleeve 203 to facilitate the adjustment of the extension length of the lifting device. The second positioning pins 304 pass through the fixed locking holes 303 and the movable locking holes 302 to facilitate the positioning of the extension crossbar 301 sliding inside the movable sleeve 203.

[0020] Please refer to this carefully. Figure 1 , Figure 2 , Figure 4 and Figure 5 The hoisting clamping assembly 4 includes two sets of extension steel cables 401. The top ends of the two sets of extension steel cables 401 are fixedly connected to the bottom surfaces of the two sets of movable sliders 206 and the two sets of extension crossbars 301, respectively. Each set of extension steel cables 401 has an upper anti-slip clamping plate 402 fixedly connected to its bottom end. The upper anti-slip clamping plate 402 can be installed on the bottom surfaces of the two sets of movable sliders 206 and the two sets of extension crossbars 301 through the extension steel cables 401.

[0021] Please refer to this carefully. Figure 1 , Figure 2 , Figure 4 and Figure 5 Each set of upper anti-slip clamping plates 402 is provided with a lower anti-slip clamping plate 404 below it. Each set of upper anti-slip clamping plates 402 and each set of lower anti-slip clamping plates 404 are threaded with clamping bolts 403. The bottom ends of the two sets of clamping bolts 403 pass through the two sets of upper anti-slip clamping plates 402 and the two sets of lower anti-slip clamping plates 404 respectively and extend to the bottom of the two sets of lower anti-slip clamping plates 404. The four corners of the welded wire mesh are placed below the upper anti-slip clamping plate 402 and above the lower anti-slip clamping plate 404 by hand. The clamping bolts 403 are twisted to stabilize the welded wire mesh by using the upper anti-slip clamping plates 402 and the lower anti-slip clamping plates 404.

[0022] In use, when the adjustable-spacing special lifting tool is needed to lift the welded wire mesh for the basement floor slab, the rope on the lifting beam 1 and the extension frame 201 of the special lifting tool is first manually connected to the hook of the gantry crane, thus facilitating the lifting of the welded wire mesh for the basement floor slab. By controlling the gantry crane to lower the hook, the special lifting tool can be lowered to a suitable position. Then, the size of the welded wire mesh for the basement floor slab to be lifted is manually determined to determine which of the two sets of clamps should be used. The clamps include an upper anti-slip clamping plate 402, clamping bolts 403 and a lower anti-slip clamping plate 404, so as to facilitate the clamping and connection of the welded wire mesh for the basement floor slab using one set of clamps. When the welded wire mesh for the basement floor slab is of a small size, the torsion lug 6 is manually squeezed to rotate the positive and negative threaded rods 202 inside the lifting beam 1 and extension frame 201 via the torsion disc 5. Since the positive and negative threaded rods 202 have two threads in different directions, two movable sleeves 203 can be installed inside the extension frame 201. Because the two movable sleeves 203 are threadedly connected to the positive and negative threaded rods 202, the rotating positive and negative threaded rods 202 can drive the two movable sleeves 203 to move closer or further apart until the lateral distance of the two sets of movable sliders 206 below the two movable sleeves 203 can be adjusted to suit the welded wire mesh. The mesh is installed by manually pulling the first positioning pin 207, which pulls it out from the limiting hole 205 and the movable slider 206, allowing the movable slider 206 to slide to the appropriate position in the guide rail 204. The first positioning pin 207 positions the movable slider 206 in the guide rail 204. The four corners of the welded wire mesh are manually clamped into the two sets of upper anti-slip clamping plates 402 and lower anti-slip clamping plates 404, and the clamping bolts 403 are manually twisted to bring the upper anti-slip clamping plates 402 and lower anti-slip clamping plates 404 closer together to clamp the welded wire mesh. This makes it convenient to use the special lifting tool to lift the welded wire mesh for the basement floor construction. When the welded wire mesh for the basement floor slab is large, the second positioning pin 304 can be manually pulled out from the moving clip 302 and the fixed clip 303 of the extension crossbar 301. This allows the extension crossbar 301 to slide within the moving sleeve 203 until the bottom surface of the extension crossbar 301 is extended to the appropriate position by a set of clamps fixed by the extension cable 401. The distance between the two moving sleeves 203 can be adjusted by manually twisting the positive and negative threaded rod 202. After adjusting the position, the above steps are repeated to clamp and lift the welded wire mesh. This special lifting tool can be used to lift welded wire mesh of different sizes for the basement floor slab.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A special lifting tool for adjustable spacing of welded wire mesh for basement floor slab construction, comprising a lifting tool beam (1), characterized in that: A small-size adjustment mechanism (2) is provided both inside and outside the lifting beam (1); The small-size adjustment mechanism (2) includes an extension frame (201). The inner wall of the extension frame (201) is fixedly connected to the outer surface of the lifting beam (1). The interior of the lifting beam (1) and the interior of the extension frame (201) are rotatably connected to a positive and negative threaded rod (202). The outer surface of the positive and negative threaded rod (202) is threadedly connected to two movable sleeves (203). Each movable sleeve (203) is slidably connected to the interior of the extension frame (201). The bottom surface of each movable sleeve (203) is fixedly connected to a guide rail. Each guide rail (204) has equidistantly arranged limiting holes (205) on one side and the other side. Each guide rail (204) has two sliding blocks (206) slidably connected inside. Each set of sliding blocks (206) has a first positioning pin (207) locked inside. The two sets of first positioning pins (207) pass close to each other through the two limiting holes (205) and the sliding blocks (206) respectively and extend to the bottom of the extension frame (201). A large-size adjustment component (3) is provided on the outside of the lifting beam (1), and a lifting clamping component (4) is provided below the small-size adjustment mechanism (2) and below the large-size adjustment component (3).

2. The special lifting tool for adjustable spacing of welded wire mesh for basement floor slab construction according to claim 1, characterized in that: The large-size adjustment component (3) includes two sets of extension crossbars (301). The two sets of extension crossbars (301) are slidably connected to the inside of two movable sleeves (203). Each movable sleeve (203) has a fixed locking hole (303) on its upper surface and a fixed locking hole (303) on its bottom surface. Each set of extension crossbars (301) has movable locking holes (302) arranged at equal intervals on its upper surface. A second positioning pin (304) is engaged inside one set of movable locking holes (302). The bottom ends of the two sets of second positioning pins (304) pass through the two fixed locking holes (303) and one set of movable locking holes (302) in sequence and extend to the bottom of the two movable sleeves (203).

3. A special lifting tool for adjustable spacing of welded wire mesh for basement floor slab construction according to claim 2, characterized in that: The hoisting clamping assembly (4) includes two sets of extension steel cables (401). The top ends of the two sets of extension steel cables (401) are fixedly connected to the bottom surfaces of the two sets of movable sliders (206) and the two sets of extension crossbars (301), respectively. Each set of extension steel cables (401) has an upper anti-slip clamping plate (402) fixedly connected to its bottom end.

4. A special lifting tool for adjustable spacing of welded wire mesh for basement floor slab construction according to claim 3, characterized in that: Each set of upper anti-slip clamping plates (402) is provided with a lower anti-slip clamping plate (404) below it. Each set of upper anti-slip clamping plates (402) and each set of lower anti-slip clamping plates (404) are threaded with clamping bolts (403). The bottom ends of the two sets of clamping bolts (403) pass through the two sets of upper anti-slip clamping plates (402) and the two sets of lower anti-slip clamping plates (404) respectively and extend to the bottom of the two sets of lower anti-slip clamping plates (404).

5. A special lifting tool for adjustable spacing of welded wire mesh for basement floor slab construction according to claim 1, characterized in that: The positive and negative threaded rod (202) is fixedly connected to a torsion disc (5) at one end away from the lifting beam (1), and a torsion lug (6) is fixedly connected to one side of the torsion disc (5).

6. A special lifting tool for adjustable spacing of welded wire mesh for basement floor slab construction according to claim 1, characterized in that: Two baffles (7) are fixedly connected to the outer surface of each movable sleeve (203), and the two baffles (7) are respectively in contact with the two sides of the extension frame (201) on their respective sides.

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