A portable construction material lifting device

Abstract

The present invention discloses a portable lifting device for building materials, including a fixed frame. Two clamping plates are slidably arranged on the left side of the fixed frame. A clamping mechanism is arranged between the two clamping plates and the fixed frame. Arc-shaped clamping grooves are formed on the side walls of the opposite sides of the two clamping plates. The lower side wall of the fixed frame is hinged with a telescopic rod. A fixing mechanism is arranged between the telescopic rod and the fixed frame. A fixed pulley is installed at the upper end of the telescopic rod. A fixed block is fixedly connected to the lower end of the telescopic rod, and a movable pulley is installed on the outer wall of the fixed block. The present invention can fold and store the device, reducing the volume and facilitating carrying and handling. At the same time, the cooperation of the movable pulley and the fixed pulley is used to realize the lifting of building materials, and the convenience of lifting building materials is also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction material lifting, and particularly relates to a portable construction material lifting device. Background Art

[0002] During the construction process of a construction site, construction materials need to be lifted from the ground plane to a specified height to facilitate the completion of the construction process of the construction part. In this process, relevant lifting equipment needs to be borrowed for handling. Large-scale material lifting equipment needs to be installed in advance and is suitable for handling a large amount or large-sized materials. For small-sized materials or materials with a small handling volume during short-distance lifting and handling work, traditional lifting equipment has certain disadvantages in use:

[0003] 1. Traditional equipment occupies a large space during handling, and resource waste is easily caused during handling;

[0004] 2. When performing short-distance lifting in some areas, it is impossible to rely on large-sized equipment, which easily causes inconvenience in material lifting;

[0005] 3. When the device is not in use, traditional handling equipment is not convenient to carry due to its large volume, resulting in inconvenient use. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems in the background art, and a portable construction material lifting device is proposed.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A portable construction material lifting device includes a fixed frame. Two clamping plates are slidably arranged on the left side of the fixed frame. A clamping mechanism is arranged between the two clamping plates and the fixed frame. Arc-shaped clamping grooves are formed on the side walls of the two clamping plates facing each other. The lower side wall of the fixed frame is hinged with a telescopic rod. A fixing mechanism is arranged between the telescopic rod and the fixed frame. A fixed pulley is installed at the upper end of the telescopic rod. The lower end of the telescopic rod is fixedly connected with a fixed block. A movable pulley is installed on the outer wall of the fixed block. A hook and a hanging ring are respectively fixedly connected to the upper side wall and the lower side wall of the fixed block. Two brackets are fixedly connected to the upper side wall of the fixed frame. A rotating shaft penetrates through the outer walls of the two brackets together. A rotating handle is fixedly connected to the end of the rotating shaft. A positioning mechanism is arranged between the rotating shaft and the brackets. A winding reel is fixedly sleeved on the outer wall of the rotating shaft. A connecting rope is fixedly connected to the winding reel and sequentially bypasses the outer walls of the movable pulley and the fixed pulley and is fixedly connected to the hook.

[0009] Preferably, the clamping mechanism includes a cavity opened in the fixed frame. A bidirectional threaded rod penetrates through the inner top wall of the cavity. Sliders threadedly connected to the outer wall of the bidirectional threaded rod penetrate through the inner walls of the cavity and are respectively fixedly connected to two clamping plates. The upper end of the bidirectional threaded rod is fixedly connected to a turntable.

[0010] Preferably, the positioning mechanism includes a gear fixedly sleeved on the outer wall of the rotating shaft. A toothed plate is engaged below the gear. A dial rod fixedly connected to the outer wall of the toothed plate penetrates through the outer wall of the rear bracket. A chute matching the dial rod is opened on the outer wall of the rear bracket. The lower side wall of the toothed plate is fixedly connected to a female rod. The lower end of the female rod is slidably inserted and fixedly connected to a male rod on the upper side wall of the fixed frame. A spring is fixedly connected between the female rod and the fixed frame.

[0011] Preferably, the fixing mechanism includes a first magnet fixedly connected to the front wall of the fixed frame. A rotating rod rotatably connected to the front wall of the telescopic rod is engaged with the first magnet. A card slot matching the first magnet is opened on the side wall of the rotating rod. A second magnet is fixedly connected in the card slot.

[0012] Preferably, a wire wheel fitting the inner side of the connecting rope is installed on the right side of the fixed frame.

[0013] Preferably, the telescopic rod includes a first sleeve rod, a second sleeve rod, and a third sleeve rod that are sequentially slidably inserted. Limiting blocks are fixedly connected to the upper ends of the second sleeve rod and the third sleeve rod. Limiting rings located below the limiting blocks on the same side are fixedly connected to the inner walls of the first sleeve rod and the second sleeve rod.

[0014] Preferably, a frosted layer is provided on the inner wall of each arc-shaped clamping groove.

[0015] Compared with the existing technology, the advantages of this portable building material lifting device are as follows:

[0016] 1. A movable pulley and a fixed pulley are provided. The winding wire wheel is rotated by using the rotating handle to pull the connecting rope. Then the connecting rope moves along the winding route between the fixed pulley and the movable pulley. Combining with the telescopic characteristics of the telescopic rod, the height of the movable pulley is raised, realizing the lifting of building materials. And using the labor-saving characteristic of the movable pulley, the convenience of lifting building materials is improved;

[0017] 2. The rotating rod and the first magnet are provided. Rotate the rotating rod counterclockwise to disengage from the first magnet, then rotate the telescopic rod counterclockwise by 90 degrees, and finally rotate the rotating rod clockwise until the second magnet and the third magnet are adsorbed and engaged to limit the telescopic rod to keep it in a vertical state, and the device is unfolded for use. After use, reverse the operation to fold and store the device, reducing the volume and facilitating carrying and handling;

[0018] 3. Set up the clamping plates. Clamp the two arc-shaped clamping grooves on the two clamping plates onto the rod-shaped object of the scaffolding. Then rotate the turntable to make the bidirectional threaded rod rotate, thereby driving the two clamping plates to move towards each other until the two arc-shaped clamping grooves are tightly clamped on the scaffolding to complete the fixation of the device.

[0019] In summary, the present invention can fold and store the device, reducing its volume, facilitating carrying and handling. At the same time, by using the cooperation of movable pulleys and fixed pulleys, the lifting of building materials is realized, and the convenience of lifting building materials is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of a portable building material lifting device proposed by the present invention;

[0021] Figure 2 is an unfolded view of a portable building material lifting device proposed by the present invention;

[0022] Figure 3 is a rear view sectional view of the unfolded view of a portable building material lifting device proposed by the present invention;

[0023] Figure 4 is a side view of the positioning mechanism in a portable building material lifting device proposed by the present invention;

[0024] Figure 5 is Figure 3 an enlarged structural view of A in;

[0025] Figure 6 is Figure 1 an enlarged structural view of B in;

[0026] Figure 7 is a sectional view of the telescopic rod in a portable building material lifting device proposed by the present invention.

[0027] In the figure: 1 fixing frame, 2 clamping plate, 3 arc-shaped clamping groove, 4 telescopic rod, 401 outer sleeve rod one, 402 outer sleeve rod two, 403 outer sleeve rod three, 5 fixed pulley, 6 fixing block, 7 movable pulley, 8 hook, 9 hanging ring, 10 bracket, 11 rotating shaft, 12 rotating handle, 13 winding reel, 14 connecting rope, 15 wire guiding pulley, 16 cavity, 17 bidirectional threaded rod, 18 slider, 19 turntable, 20 gear, 21 toothed plate, 22 lever, 23 mother rod, 24 spring, 25 magnetic block one, 26 rotating rod, 27 clamping groove, 28 limiting block, 29 limiting ring, 30 magnetic block two, 31 abrasive layer, 32 magnetic block three. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It 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 therefore should not be construed as a limitation of the present invention.

[0030] Refer to Figure 1-7 , a portable building material lifting device, including a fixed frame 1. Two clamping plates 2 are slidably arranged on the left side of the fixed frame 1. A clamping mechanism is arranged between the two clamping plates 2 and the fixed frame 1. Arc-shaped clamping grooves 3 are opened on the side walls of the two clamping plates 2 facing each other. A frosting layer 31 is arranged on the inner wall of each arc-shaped clamping groove 3, which increases the friction between the arc-shaped clamping groove 3 and the fixed object. The clamping mechanism includes a cavity 16 opened in the fixed frame 1. A bidirectional threaded rod 17 penetrates through the inner top wall of the cavity 16. Sliders 18 threaded on the outer wall of the bidirectional threaded rod 17 and fixedly connected to the two clamping plates 2 respectively penetrate through the inner wall of the cavity 16. The upper end of the bidirectional threaded rod 17 is fixedly connected with a turntable 19. When in use, the two arc-shaped clamping grooves 3 on the two clamping plates 2 are clamped on the rod-shaped object on the scaffolding, and then the turntable 19 is rotated to make the bidirectional threaded rod 17 rotate, thereby driving the two clamping plates 2 to move towards each other until the two arc-shaped clamping grooves 3 are clamped tightly on the scaffolding to complete the fixation of the device.

[0031] An expansion rod 4 is hinged to the lower side wall of the fixed frame 1. The expansion rod 4 includes a sleeve rod one 401, a sleeve rod two 402 and a sleeve rod three 403 that are sequentially slidably inserted. Limit blocks 28 are fixedly connected to the upper ends of the sleeve rod two 402 and the sleeve rod three 403. Limit rings 29 are fixedly connected to the inner walls of the sleeve rod one 401 and the sleeve rod two 402 and are located below the limit blocks 28 on the same side. By using the engagement of the limit rings 29 with the limit blocks 28, the expansion rod 4 can be limited, thereby avoiding the internal detachment and separation of the expansion rod 4.

[0032] A fixing mechanism is provided between the telescopic rod 4 and the fixed frame 1. The fixing mechanism includes a first magnet 25 fixedly connected to the front wall of the fixed frame 1. A rotating rod 26 that engages with the first magnet 25 is rotatably connected to the front wall of the telescopic rod 4. A card slot 27 matching the first magnet 25 is formed in the side wall of the rotating rod 26. A second magnet 30 is fixedly connected in the card slot 27. A third magnet 32 is fixedly connected to the outer wall of the fixed frame 1. After the device is fixed on the scaffolding, rotate the rotating rod 26 counterclockwise to disengage from the first magnet 25, then rotate the telescopic rod 4 counterclockwise by 90 degrees, and finally rotate the rotating rod 26 clockwise until the second magnet 30 and the third magnet 32 are adsorbed and engaged to limit the telescopic rod 4 and keep it in a vertical state. When the device is unfolded and used, after use, operate in the reverse to fold and store the device, reducing its volume and facilitating carrying and handling.

[0033] A fixed pulley 5 is installed at the upper end of the telescopic rod 4. A fixed block 6 is fixedly connected to the lower end of the telescopic rod 4. A movable pulley 7 is installed on the outer wall of the fixed block 6. A hook 8 and a hanging ring 9 are respectively fixedly connected to the upper side wall and the lower side wall of the fixed block 6. After the telescopic rod 4 is limited, first unreel the connecting rope 14 so that the telescopic rod 4 automatically extends until the movable pulley 7 is in the corresponding position, and then bind the building materials to be lifted to the hanging ring 9 to complete the fixation of the building materials.

[0034] Two brackets 10 are fixedly connected to the upper side wall of the fixed frame 1. A rotating shaft 11 penetrates through the outer walls of the two brackets 10. A rotating handle 12 is fixedly connected to the end of the rotating shaft 11. A positioning mechanism is provided between the rotating shaft 11 and the bracket 10. The positioning mechanism includes a gear 20 fixedly sleeved on the outer wall of the rotating shaft 11. A toothed plate 21 is engaged below the gear 20. A dial rod 22 penetrating through the outer wall of the rear bracket 10 is fixedly connected to the outer wall of the toothed plate 21. A sliding groove matching the dial rod 22 is formed in the outer wall of the rear bracket 10. A female rod 23 is fixedly connected to the lower side wall of the toothed plate 21. The lower end of the female rod 23 is slidably inserted and fixedly connected to a male rod on the upper side wall of the fixed frame 1. A spring 24 is fixedly connected between the female rod 23 and the fixed frame 1. When unreeling and reeling the connecting rope 14, the dial rod 22 can be pressed downward to drive the toothed plate 21 to move downward until it disengages from the engagement with the gear 20, so that the rotating shaft 11 and the winding reel 13 can rotate freely.

[0035] A winding reel 13 is fixedly sleeved on the outer wall of the rotating shaft 11. A connecting rope 14 is fixedly connected to the winding reel 13 and sequentially winds around the outer walls of the movable pulley 7 and the fixed pulley 5 and is fixedly connected to the hook 8. A wire guiding wheel 15 that fits against the inner side of the connecting rope 14 is installed on the right side of the fixing frame 1. When the building materials are tied to the hanging ring 9, the winding reel 13 is rotated by using the rotating handle 12 to pull the connecting rope 14. Then, the connecting rope 14 moves along the winding path between the fixed pulley 5 and the movable pulley 7, and in cooperation with the telescopic property of the telescopic rod 4, the height of the movable pulley 7 is raised to realize the lifting of the building materials. By utilizing the labor-saving property of the movable pulley 7, the convenience of lifting the building materials is improved. When the building materials are lifted to the specified height, the lever 22 is released. Then, under the action of the spring 24, the toothed plate 21 moves upward to engage with the gear 20, clamping and limiting the gear 20, thereby preventing the winding reel 13 from continuing to rotate, that is, fixing the height of the building materials for the convenience of the workers to take.

[0036] Further explanation, the above-mentioned fixed connection, unless otherwise clearly stipulated and limited, should be understood in a broad sense. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0037] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A portable lifting device for building materials, comprising a fixing frame (1), characterized in that, On the left side of the fixing frame (1), two clamping plates (2) are slidably arranged. A clamping mechanism is arranged between the two clamping plates (2) and the fixing frame (1). Arc-shaped clamping grooves (3) are formed on the opposite side walls of the two clamping plates (2). The lower side wall of the fixing frame (1) is hinged with a telescopic rod (4). A fixing mechanism is arranged between the telescopic rod (4) and the fixing frame (1). A fixed pulley (5) is installed at the upper end of the telescopic rod (4). The lower end of the telescopic rod (4) is fixedly connected with a fixed block (6). A movable pulley (7) is installed on the outer wall of the fixed block (6). The upper side wall and the lower side wall of the fixed block (6) are respectively fixedly connected with a hook (8) and a hanging ring (9). Two brackets (10) are fixedly connected to the upper side wall of the fixing frame (1). A rotating shaft (11) penetrates through the outer walls of the two brackets (10) together. A rotating handle (12) is fixedly connected to the end of the rotating shaft (11). A positioning mechanism is arranged between the rotating shaft (11) and the bracket (10). A winding reel (13) is fixedly sleeved on the outer wall of the rotating shaft (11). A connecting rope (14) which is fixedly connected with the hook (8) after sequentially bypassing the outer walls of the movable pulley (7) and the fixed pulley (5) is fixedly connected to the winding reel (13); The fixing mechanism includes a first magnet (25) fixedly connected to the front wall of the fixing frame (1). A rotating rod (26) which is engaged with the first magnet (25) is rotatably connected to the front wall of the telescopic rod (4). A clamping groove (27) which is matched with the first magnet (25) is formed on the side wall of the rotating rod (26). A second magnet (30) is fixedly connected in the clamping groove (27); A third magnet (32) is fixedly connected to the outer wall of the fixing frame (1). After the device is fixed on the scaffolding, rotate the rotating rod counterclockwise to disengage from the first magnet (25), then rotate the telescopic rod (4) counterclockwise by 90 degrees, and finally rotate the rotating rod (26) clockwise until the second magnet (30) and the third magnet (32) are adsorbed and engaged to limit the telescopic rod (4) to keep it in a vertical state, so as to deploy and use the device. After use, operate in the reverse way to fold and store the device for transportation.

2. The portable building material lifting device according to claim 1, characterized in that, The clamping mechanism includes a cavity (16) formed in the fixing frame (1). A bidirectional threaded rod (17) penetrates through the inner top wall of the cavity (16). Sliders (18) which are respectively fixedly connected with the two clamping plates (2) after threading through the inner wall of the cavity (16) are threadedly connected to the outer wall of the bidirectional threaded rod (17). A turntable (19) is fixedly connected to the upper end of the bidirectional threaded rod (17).

3. A portable building material lifting device according to claim 1, characterized in that The positioning mechanism includes a gear (20) fixedly sleeved on the outer wall of the rotating shaft (11). A toothed plate (21) is meshed below the gear (20). A dial rod (22) fixedly connected to the outer wall of the toothed plate (21) penetrates through the outer wall of the rear bracket (10). A chute matching the dial rod (22) is formed on the outer wall of the rear bracket (10). A female rod (23) is fixedly connected to the lower side wall of the toothed plate (21). The lower end of the female rod (23) is slidably inserted and fixedly connected to a male rod on the upper side wall of the fixed frame (1). A spring (24) is fixedly connected between the female rod (23) and the fixed frame (1).

4. A portable building material lifting device according to claim 1, characterized in that, A wire wheel (15) fitting the inner side of the connecting rope (14) is installed on the right side of the fixed frame (1).

5. A portable building material lifting device according to claim 1, wherein, The telescopic rod (4) includes a sleeve rod one (401), a sleeve rod two (402) and a sleeve rod three (403) which are sequentially slidably inserted. Limit blocks (28) are fixedly connected to the upper ends of the sleeve rod two (402) and the sleeve rod three (403). Limit rings (29) are fixedly connected to the inner walls of the sleeve rod one (401) and the sleeve rod two (402) and are located below the limit blocks (28) on the same side.

6. The portable building material lifting device according to claim 1, characterized in that, A frosted layer (31) is provided on the inner wall of each arc-shaped clamping groove (3).

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