Reinforcing steel bar hoisting device for building construction

Abstract

The utility model discloses a reinforcing steel bar hoisting device for building construction, which belongs to the technical field of building construction and comprises a fixing frame with a U-shaped structure. The gear can rotate through rotation of the rotating shaft, force can be applied to the rack through rotation of the gear, the rack can move downwards on the inner wall of the tooth opening when stressed, the pressing rod can move downwards through downward movement of the rack, force can be applied to the connecting plate through downward movement of the pressing rod, and the clamping jaw can rotate after the connecting plate is stressed. The tops of the two connecting plates can be close to each other, at the moment, the two clamping jaws can be clamped, then a steel bar can be clamped, when the steel bar is loosened, a rack is moved upwards, after the steel bar is clamped, a limiting rod is rotated into a tooth groove of a gear, and a limiting spring can enable the position of the limiting rod to be placed stably; the gear can be fixed and prevented from rotating reversely, and therefore the effects that steel bars are prevented from falling off, and personnel safety is guaranteed can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to a steel bar lifting device for building construction. Background Art

[0002] In today's construction process, when building some high-rise buildings, some building materials need to be carried to the upper floors manually, which consumes a lot of manpower and has low efficiency, delaying the entire construction period. Therefore, a crane is generally used to lift the materials to a higher place. There are many kinds of building materials. For long-rod materials, such as steel bars, as commonly used building materials, they play a decisive role in the quality of construction. At present, there are often certain safety hazards in the lifting of steel bars during construction. They are generally placed horizontally, tied with ropes, and then hoisted up. Therefore, a steel bar lifting device for construction is needed.

[0003] At present, a Chinese patent with announcement number CN212151335U discloses a steel bar lifting device for construction, including a pneumatic seat, a first pneumatic column is welded and installed on the left and right end surfaces of the pneumatic seat, a pneumatic rod is inserted and installed in the first pneumatic column, a first rotating shaft is welded and installed on the outer end of the pneumatic rod, a first transmission rod is provided at the upper end of the first rotating shaft, the upper end of the first transmission rod is inserted in the second rotating shaft, a second transmission rod is inserted at the upper end of the second rotating shaft, the upper part of the second transmission rod is inserted in the third rotating shaft, a second pneumatic column is welded and installed on the inner side wall of the third rotating shaft, the second pneumatic column is inserted in the pneumatic block, the inner side of the pneumatic block is welded and installed on the left and right side walls of the fixed block, and the third pneumatic column is welded and installed on the lower end of the fixed block. This device can effectively prevent the binding rope of the steel bars from breaking and the steel bars from falling from the air, so that the personal safety of the workers is effectively guaranteed.

[0004] However, when the above device is in use, it completely relies on the movement of the piston rod of the third pneumatic column to enable the clamping jaws to clamp the steel bars. When the clamping jaws clamp the steel bars, the clamping jaws lack a locking mechanism. If the pneumatic column retracts at this time, it is easy to cause the steel bars to fall, affecting personnel safety. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a steel bar lifting device for construction. The utility model has the advantages of preventing steel bars from falling and ensuring the safety of personnel.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A steel bar lifting device for construction, including a fixed frame with a U-shaped structure, tooth openings are provided on both sides of the top of the fixed frame, and a rack is slidably connected to the inner wall of the tooth opening, and a rotating opening extending into the tooth opening is provided on the outer wall of both ends of the fixed frame, and a rotating mechanism is provided on the outer wall of the rotating opening, and a rotatable gear is provided in the rotating opening, and the gear is meshed with the rack, and a limit rod is hinged on the inner wall of one side of the rotating opening, and the limit rod forms a sliding fit with the inner wall of the tooth groove of the gear, and the same limit spring is fixedly connected between the limit rod and the inner wall of the rotating opening.

[0008] The rotating mechanism comprises a rotating motor fixedly connected to an inner wall of one side of the fixing frame, the output shaft of the rotating motor is fixedly connected to a rotating shaft, and the rotating shaft is fixedly connected to a gear.

[0009] The bottom of the rack is fixedly connected with a pressure rod, and both sides of the bottom of the pressure rod are provided with rotatable clamping claws.

[0010] The clamping jaws are in an arc-shaped structure, and the centers of the two clamping jaws coincide with each other.

[0011] The bottom corner of the fixing frame is fixedly connected with a mounting plate, and the opposite sides of two adjacent mounting plates located on the same side and the same end are rotatably connected with the same connecting shaft through a bearing, the connecting shaft is fixedly connected to the clamping claw, and the top of the connecting shaft is fixedly connected with a connecting plate.

[0012] Both ends of the bottom of the pressure rod are provided with a rotation groove, the inner wall of the rotation groove is rotatably connected with a rotating wheel through a bearing, and a rolling fit is formed between the rotating wheel and the connecting plate.

[0013] A connecting spring is fixedly connected to the top of the connecting plate, and the connecting spring is fixedly connected to the fixing frame.

[0014] One side of one of the clamping jaws is provided with a plurality of evenly distributed wedge grooves, and one side of the other clamping jaw is provided with wedge blocks corresponding to the wedge grooves one by one, and a sliding fit is formed between the wedge blocks and the inner wall of the wedge groove.

[0015] The beneficial effects of the utility model are:

[0016] 1. The steel bar lifting device for construction can rotate the gear by rotating the rotating shaft, and the rotation of the gear can apply force to the rack. The rack can move downward on the inner wall of the tooth mouth under force, and the downward movement of the rack can move the pressure rod downward, and the downward movement of the pressure rod can apply force to the connecting plate. After the connecting plate is subjected to force, the clamping claw will rotate. In actual use, the tops of the two connecting plates can be brought close to each other. At this time, the two clamping claws can be clamped to clamp the steel bar. When the steel bar is loosened, the rack can be moved up. When the steel bar is clamped, the limit rod is rotated into the tooth groove of the gear. The limit spring can make the position of the limit rod stable, so that the gear can be fixed and the gear can be prevented from reversing. Therefore, the steel bar can be prevented from falling and the safety of personnel can be ensured.

[0017] 2. The steel bar lifting device for construction can roll on the surface of the connecting plate when the pressure rod is pressed down by the rotating wheel. In actual use, the rotating wheel can also be set on the top of the connecting plate. At this time, the rotating wheel can be rotated, and pressure can be applied to the connecting plate through the connecting spring, which can facilitate the connecting plate to maintain the tendency of retraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural diagram of a steel bar lifting device for construction proposed by the utility model;

[0019] Figure 2 This is a structural schematic diagram of a steel bar lifting device for construction proposed by the utility model, highlighting the rotating motor;

[0020] Figure 3 This is a partial cross-sectional structural schematic diagram of a steel bar lifting device for construction proposed by the utility model;

[0021] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0022] In the figure: 1, fixed frame; 2, tooth mouth; 3, rack; 4, rotating mouth; 5, gear; 6, limit rod; 7, limit spring; 8, rotating motor; 9, rotating shaft; 10, pressure rod; 11, clamping claw; 12, connecting shaft; 13, connecting plate; 14, connecting spring; 15, rotating groove; 16, rotating wheel; 18, wedge block. DETAILED DESCRIPTION

[0023] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent 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 cannot be understood as a limitation on this patent.

[0026] Reference Figure 1-4 A steel bar lifting device for construction, comprising a fixed frame 1 with a U-shaped structure, tooth openings 2 are provided on both sides of the top of the fixed frame 1, and a rack 3 is slidably connected to the inner wall of the tooth opening 2, and a rotating opening 4 extending into the tooth opening 2 is provided on the outer wall of both ends of the fixed frame 1, and a rotating mechanism is provided on the outer wall of the rotating opening 4, and a rotatable gear 5 is provided in the rotating opening 4, and the gear 5 is meshed with the rack 3, and a limit rod 6 is hinged on the inner wall of one side of the rotating opening 4, and the limit rod 6 forms a sliding fit with the inner wall of the tooth groove of the gear 5, and the same limit spring 7 is fixedly connected between the limit rod 6 and the inner wall of the rotating opening 4, and the rotating mechanism comprises a rotating motor 8 fixedly connected to the inner wall of one side of the fixed frame 1, and the output shaft of the rotating motor 8 is fixedly connected to a rotating shaft 9, and the rotating shaft 9 is fixedly connected to the gear 5, and the rotating shaft 9 can rotate when the output shaft of the rotating motor 8 rotates, at this time, the gear 5 can be made to rotate. The bottom of the rack 3 is rotated, and a pressure rod 10 is fixedly connected to the bottom of the pressure rod 10. Both sides of the bottom of the pressure rod 10 are provided with rotatable clamping jaws 11. The pressure rod 10 can apply force to the connecting plate 13 when moving, so that the clamping jaws 11 can clamp or release the steel bars. The clamping jaws 11 are in an arc-shaped structure, and the centers of the two clamping jaws 11 coincide with each other. The arc-shaped structure can enable the clamping jaws 11 to clamp more steel bars, which can avoid the appearance of a large dead corner area on the rectangular inner wall. The bottom corner of the fixed frame 1 is fixedly connected to a mounting plate, and the opposite sides of two adjacent mounting plates located on the same side and the same end are rotatably connected to the same connecting shaft 12 through a bearing. The connecting shaft 12 is fixedly connected to the clamping jaw 11, and the top of the connecting shaft 12 is fixedly connected to a connecting plate 13, which can be rotated when the connecting plate 13 is subjected to force through the connecting shaft 12. The rotation of the connecting shaft 12 can cause the clamping jaws 11 to rotate.

[0027] Reference Figure 1 , Figure 3 and Figure 4, both ends of the bottom of the pressure rod 10 are provided with a rotating groove 15, and the inner wall of the rotating groove 15 is rotatably connected with a rotating wheel 16 through a bearing, and a rolling fit is formed between the rotating wheel 16 and the connecting plate 13. When the pressure rod 10 is pressed down, the rotating wheel 16 can roll on the surface of the connecting plate 13. In actual use, the rotating wheel 16 can also be set on the top of the connecting plate 13, and the rotating wheel 16 can be rotated at this time. A connecting spring 14 is fixedly connected to the top of the connecting plate 13, and the connecting spring 14 is fixedly connected to the fixed frame 1. The connecting spring 14 can apply pressure to the connecting plate 13, which can facilitate the connection plate 13 to maintain a tendency to retract. A plurality of evenly distributed wedge grooves are provided on one side of one of the clamping jaws 11, and a wedge block 18 corresponding to the wedge groove is provided on one side of the other clamping jaw 11. A sliding fit is formed between the wedge block 18 and the inner wall of the wedge groove. The contact area between the two opposing clamping jaws 11 can be increased by the wedge block 18, which can prevent the steel bar from leaking through the gap between the two clamping jaws 11, and can further protect the safety of personnel.

[0028] Working principle: when in use, starting the rotating motor 8 can make the rotating shaft 9 rotate, and the rotation of the rotating shaft 9 can make the gear 5 rotate. The rotation of the gear 5 can apply force to the rack 3, and the rack 3 can be forced to move downward on the inner wall of the tooth mouth 2. The downward movement of the rack 3 can make the pressure rod 10 move downward, and the downward movement of the pressure rod 10 can apply force to the connecting plate 13. After the connecting plate 13 is forced, the clamping claw 11 will rotate. In actual use, the tops of the two connecting plates 13 can be made close to each other. At this time, the two clamping claws 11 can be clamped, and the steel bar can be clamped. When the steel bar is loosened, the rack 3 can be moved up. When the steel bar is clamped, the limit rod 6 is rotated into the tooth groove of the gear 5. The limit spring 7 can make the position of the limit rod 6 stable, so that the gear 5 can be fixed and the gear 5 can be prevented from reversing. Therefore, the steel bar can be prevented from falling and the safety of personnel can be ensured.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel bar lifting device for construction, characterized in that: The invention comprises a fixed frame (1) with a U-shaped structure, wherein tooth openings (2) are provided on both sides of the top of the fixed frame (1), and the inner wall of the tooth opening (2) is slidably connected to a rack (3), and the outer walls of both ends of one end of the fixed frame (1) are provided with a rotating opening (4) extending into the tooth opening (2), and the outer wall of the rotating opening (4) is provided with a rotating mechanism, and a rotatable gear (5) is provided in the rotating opening (4), and the gear (5) is meshed with the rack (3), and a limiting rod (6) is hingedly connected to the inner wall of one side of the rotating opening (4), and the limiting rod (6) forms a sliding fit with the inner wall of the tooth groove of the gear (5), and a limiting spring (7) is fixedly connected between the limiting rod (6) and the inner wall of the rotating opening (4).

2. A steel bar lifting device for construction according to claim 1, characterized in that: The rotating mechanism comprises a rotating motor (8) fixedly connected to an inner wall of one side of the fixed frame (1); the output shaft of the rotating motor (8) is fixedly connected to a rotating shaft (9); and the rotating shaft (9) is fixedly connected to the gear (5).

3. A steel bar lifting device for construction according to claim 1, characterized in that: The bottom of the rack (3) is fixedly connected to a pressure rod (10), and rotatable clamping claws (11) are provided on both sides of the bottom of the pressure rod (10).

4. A steel bar lifting device for construction according to claim 3, characterized in that: The clamping jaws (11) are in an arc-shaped structure, and the centers of the two clamping jaws (11) coincide with each other.

5. A steel bar lifting device for construction according to claim 4, characterized in that: The bottom corner of the fixing frame (1) is fixedly connected to a mounting plate, and the opposite sides of two adjacent mounting plates located on the same side and the same end are rotatably connected to a same connecting shaft (12) via a bearing, the connecting shaft (12) is fixedly connected to the clamping jaw (11), and the top of the connecting shaft (12) is fixedly connected to a connecting plate (13).

6. A steel bar lifting device for construction according to claim 5, characterized in that: Both ends of the bottom of the pressure rod (10) are provided with a rotation groove (15), and the inner wall of the rotation groove (15) is rotatably connected to a rotating wheel (16) via a bearing, and a rolling fit is formed between the rotating wheel (16) and the connecting plate (13).

7. A steel bar lifting device for construction according to claim 6, characterized in that: A connecting spring (14) is fixedly connected to the top of the connecting plate (13), and the connecting spring (14) is fixedly connected to the fixing frame (1).

8. A steel bar lifting device for construction according to claim 5, characterized in that: One side of one of the clamping jaws (11) is provided with a plurality of evenly distributed wedge grooves, and one side of the other clamping jaw (11) is provided with wedge blocks (18) corresponding to the wedge grooves one by one, and a sliding fit is formed between the wedge blocks (18) and the inner wall of the wedge groove.

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