A material lifting device for construction

Abstract

This utility model relates to the field of construction technology and solves the problem that during material lifting, as the lifting height increases, the material swings back and forth, leading to unstable lifting and potential falls. Specifically, it is a material lifting device for construction, including a crossbeam. Hooks are slidably connected to flanges on the top and bottom edges of the crossbeam. An electric hoist body is located at the bottom of the hooks. One end of a rope wound around the surface of the electric hoist body is connected to a rectangular frame. A crossbar is slidably connected inside the rectangular frame, with fixing blocks at both ends of the crossbar. Guide wheels are located at the four corners of the fixing blocks. Barbs are slidably connected to both sides of the crossbeam on the electric hoist body. A longitudinal square groove is formed on the side plate at the bottom of the barb, and a longitudinal limiting strip is provided on the inner wall of the longitudinal square groove. The guide wheels are slidably connected to the surface of the limiting strip.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a material lifting device for building construction. Background Technology

[0002] The authorization announcement number CN210795576U discloses a material lifting device for construction, which includes a fixed base, a support rod fixed to the top of the fixed base by bolts, a top plate fixed to the top of the support rod by bolts, a first motor fixed to the bottom of the top plate by bolts, and a winding roller provided at the output end of the first motor, with a rope wound around the winding roller. A fixed column is welded to the bottom of the top plate, and a gear column is rotatably connected to one side of the fixed column. A through hole is opened on one side of the gear column, and an installation groove is opened on one side of the gear column. A fixed rod is welded to one side of the installation groove, and a rotating rod is rotatably connected to one side of the fixed rod.

[0003] It can apply a repulsive force to the rotating rod, ensuring that it is under stress and can jump at any time. It is flexible, can provide lighting when working at night, facilitates the lifting of materials, and improves the applicability of the device.

[0004] However, during material lifting, as the lifting height increases, the material swings back and forth, which can cause the material to fall and cause a safety accident. This solution does not provide high stability and safety protection for material lifting. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a material lifting device for construction, which solves the problem that during material lifting, as the lifting height increases, the material swings back and forth, causing the material to fall and potentially leading to a safety accident.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a material lifting device for construction, comprising a crossbeam, on which hooks are slidably connected to flanges on the top and bottom edges of the crossbeam, and an electric hoist body is provided at the bottom of the hooks. One end of a rope wound around the surface of the electric hoist body is connected to a rectangular frame; a crossbar is slidably connected inside the rectangular frame, and fixing blocks are provided at both ends of the crossbar, with guide wheels provided at the four corners of the surface of the fixing blocks.

[0007] The crossbeam surface is slidably connected to the two sides of the electric hoist body with barbs. The side plate at the bottom of the barb has a longitudinal square groove. The inner side wall of the longitudinal square groove is provided with a longitudinal limiting strip. The guide wheel is slidably connected to the surface of the limiting strip.

[0008] In one specific embodiment, a connecting plate is rotatably connected to the bottom of the rectangular frame, and a hook is provided at the bottom of the connecting plate.

[0009] In one specific embodiment, the cross-section of the beam is I-shaped, and the flanges are symmetrically distributed at the top and bottom edges of the beam.

[0010] In one specific embodiment, the wheel surface of the guide wheel makes rolling contact with the surface of the longitudinal limiting strip, and the longitudinal square groove forms an enclosing limiting effect on the guide wheel.

[0011] In one specific embodiment, the sliding connection direction between the barb and the crossbeam is parallel to the extension direction of the crossbeam, and the side plate is perpendicularly fixedly connected to the barb.

[0012] In one specific embodiment, the connecting plate and the rectangular frame are rotatably connected by a bearing, and the hook remains in a free-rotating state when suspending materials.

[0013] Compared with the prior art, this utility model provides a material lifting device for construction, which has the following beneficial effects:

[0014] The technical solution disclosed in this utility model achieves anti-sway function during material lifting by setting a mechanical constraint structure of guide wheels, longitudinal square grooves, and longitudinal limiting strips. This solves the problem of falling risk caused by material swaying at high altitudes. When the material is lifted, the guide wheels at the four corners of the fixed block roll along the longitudinal limiting strips of the side plate. The longitudinal square grooves form a three-dimensional spatial enclosure of the guide wheels, forcibly constraining the lateral displacement of the crossbar and the rectangular frame, eliminating the sway transmission of the rope, and significantly improving the safety and stability of material lifting at high altitudes. Through the sliding cooperation between the hook and the flange and the adjustable connection between the barb and the crossbeam, the flexible adaptability of the working position of the electric hoist body is achieved. The hook slides horizontally along the flange of the I-shaped crossbeam, and the barb moves synchronously to keep the side plate and the guide wheel always aligned. This allows the anti-sway mechanism to match the needs of different lifting points, solving the problem of low work efficiency caused by fixed work positions and greatly improving the flexibility of construction deployment and equipment utilization. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the electric hoist body structure of this utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A;

[0019] Figure 4 This utility model Figure 2 Enlarged view of the structure at point B.

[0020] In the diagram: 1. Crossbeam; 2. Flange; 3. Hook; 4. Electric hoist body; 5. Rope; 6. Rectangular frame; 7. Crossbar; 8. Fixing block; 9. Guide wheel; 10. Backhook; 11. Side plate; 12. Longitudinal square groove; 13. Limiting strip; 14. Connecting plate; 15. Hook. Detailed Implementation

[0021] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Figures 1-4 In one embodiment of this utility model, a material lifting device for construction includes a crossbeam 1. A grab hook 3 is slidably connected to flanges 2 on both the top and bottom edges of the crossbeam 1. An electric hoist body 4 is located at the bottom of the grab hook 3. One end of a rope 5 wound around the surface of the electric hoist body 4 is connected to a rectangular frame 6. A crossbar 7 is slidably connected inside the rectangular frame 6. Fixing blocks 8 are located at both ends of the crossbar 7, and guide wheels 9 are located at the four corners of the surface of each fixing block 8.

[0023] The specific problem addressed in this embodiment is to solve the safety accident caused by the material swinging back and forth as the lifting height increases during the material lifting process, which leads to the material falling and becoming unstable during lifting. This utility model achieves anti-sway function during material lifting by setting a mechanical constraint structure of guide wheels 9, longitudinal square grooves 12 and longitudinal limiting strips 13, solving the problem of falling risk caused by material swaying at high altitudes. When the material is lifted, the guide wheels 9 at the four corners of the fixed block 8 roll along the longitudinal limiting strips 13 of the side plate 11. The longitudinal square grooves 12 form a three-dimensional spatial enclosure of the guide wheels 9, forcibly constraining the lateral displacement of the crossbar 7 and the rectangular frame 6, eliminating the sway transmission of the rope 5, and significantly improving the safety and stability of material lifting at high altitudes. Through the sliding cooperation between the hook 3 and the flange 2 and the adjustable connection between the barb 10 and the crossbeam 1, the flexible adaptability of the working position of the electric hoist body 4 is realized. The hook 3 slides horizontally along the flange 2 of the I-shaped crossbeam 1, and the barb 10 moves synchronously to keep the side plate 11 and the guide wheels 9 always aligned, so that the anti-sway mechanism can match the needs of different lifting points, solving the problem of low work efficiency caused by fixed work positions, and greatly improving the flexibility of construction deployment and equipment utilization.

[0024] The surface of the crossbeam 1 is slidably connected to the two sides of the electric hoist body 4. The side plate 11 at the bottom of the hook 10 has a longitudinal square groove 12. The inner wall of the longitudinal square groove 12 has a longitudinal limiting strip 13. The guide wheel 9 is slidably connected to the surface of the limiting strip 13. In this specific embodiment, the grab hook 3 is slidably installed on the flange 2 of the I-shaped crossbeam 1. The bottom of the grab hook 3 is suspended from the electric hoist body 4 to control the lifting of the rope 5. The end of the rope 5 is connected to the rectangular frame 6. The four corners of the fixing blocks 8 at both ends of the crossbar 7 inside the frame are equipped with guide wheels 9. The hooks 10 on both sides of the crossbeam 1 are fixed to the longitudinal square groove 12 through the bottom side plate 11. The longitudinal limiting strip 13 in the groove is in rolling contact with the guide wheel 9. When the material is lifted, the guide wheel 9 slides up and down in the longitudinal square groove 12 along the limiting strip 13. The three-dimensional spatial constraint of the guide wheel 9 by the groove wall forces the swaying to be eliminated.

[0025] In this specific embodiment, a connecting plate 14 is rotatably connected to the bottom of the rectangular frame 6, and a hook 15 is provided at the bottom of the connecting plate 14;

[0026] The bottom of the rectangular frame 6 is connected to the connecting plate 14 via a bearing, and the hook 15 is fixed below the connecting plate 14; when the material is suspended, the connecting plate 14 can rotate freely to eliminate torsional force.

[0027] In this specific embodiment, the cross-section of the beam 1 is I-shaped, and the flanges 2 are symmetrically distributed at the top and bottom edges of the beam 1;

[0028] The I-shaped cross-section of the beam 1 provides a double flange 2 support structure, and the top and bottom flanges 2 are symmetrically distributed to enhance the sliding stability of the hook 3.

[0029] In this specific embodiment, the wheel surface of the guide wheel 9 rolls into contact with the surface of the longitudinal limiting strip 13, and the longitudinal square groove 12 forms a surrounding limiting on the guide wheel 9;

[0030] The guide wheel 9 rolls in close contact with the surface of the longitudinal limiting strip 13, and the U-shaped surrounding structure of the longitudinal square groove 12 restricts the horizontal displacement of the guide wheel 9.

[0031] In this specific embodiment, the sliding connection direction between the barb 10 and the crossbeam 1 is parallel to the extension direction of the crossbeam 1, and the side plate 11 is perpendicularly fixedly connected to the barb 10.

[0032] The barb 10 slides horizontally along the extension direction of the crossbeam 1, and the vertically fixed side plate 11 ensures that the longitudinal square groove 12 is always aligned with the guide wheel 9.

[0033] In this specific embodiment, the connecting plate 14 and the rectangular frame 6 are rotatably connected by bearings, and the hook 15 remains in a free rotation state when suspending materials;

[0034] The connecting plate 14 forms a rotating pair with the rectangular frame 6 through the bearing, and the hook 15 rotates freely in the direction of gravity when the material is suspended.

[0035] Working principle: When the electric hoist body 4 drives the rope 5 to lift and lower, the guide wheels 9 at the four corners of the fixed block 8 roll inside the longitudinal square groove 12 along the longitudinal limiting strip 13 of the side plate 11. The three-dimensional surrounding limiting of the guide wheels 9 through the square groove wall forcibly constrains the lateral displacement of the crossbar 7 and the rectangular frame 6. At the same time, when the hook 3 slides along the flange 2 of the crossbeam 1 to adjust the lifting position, the synchronously moving hook 10 keeps the longitudinal square groove 12 of the side plate 11 always aligned with the guide wheel 9, eliminating the risk of material swing. The connecting plate 14 drives the hook 15 to rotate freely through the bearing, and the gravity adaptive balance improves the stability of the process.

[0036] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material lifting device for construction, comprising a crossbeam (1), characterized in that: The top and bottom edges of the crossbeam (1) are provided with flanges (2) on which hooks (3) are slidably connected. The bottom of the hooks (3) is provided with an electric hoist body (4). One end of the rope (5) wrapped around the surface of the electric hoist body (4) is connected to a rectangular frame (6). A crossbar (7) is slidably connected inside the rectangular frame (6). Fixed blocks (8) are provided at both ends of the crossbar (7). Guide wheels (9) are provided at the four corners of the surface of the fixed blocks (8). The surface of the crossbeam (1) is slidably connected to the two sides of the electric hoist body (4) with barbs (10). The side plate (11) at the bottom of the barb (10) has a longitudinal square groove (12) on its side. The inner wall of the longitudinal square groove (12) is provided with a longitudinal limiting strip (13). The guide wheel (9) is slidably connected to the surface of the limiting strip (13).

2. The material lifting device for construction as described in claim 1, characterized in that: The bottom of the rectangular frame (6) is rotatably connected to a connecting plate (14), and the bottom of the connecting plate (14) is provided with a hook (15).

3. The material lifting device for construction as described in claim 1, characterized in that: The cross-section of the beam (1) is I-shaped, and the flanges (2) are symmetrically distributed at the top and bottom edges of the beam (1).

4. A material lifting device for construction as described in claim 1, characterized in that: The wheel surface of the guide wheel (9) rolls in contact with the surface of the longitudinal limiting strip (13), and the longitudinal square groove (12) forms an encircling limiting on the guide wheel (9).

5. A material lifting device for construction as described in claim 1, characterized in that: The sliding connection direction between the barb (10) and the crossbeam (1) is parallel to the extension direction of the crossbeam (1), and the side plate (11) is vertically fixedly connected to the barb (10).

6. A material lifting device for construction according to claim 2, characterized in that: The connecting disc (14) and the rectangular frame (6) are rotatably connected by bearings, and the hook (15) remains in a free rotation state when suspending materials.

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