Simple lifting appliance for building construction

Abstract

The utility model discloses a simple lifting appliance for building construction, and belongs to the technical field of lifting devices. The lifting appliance comprises a front supporting leg and a rear supporting leg which are oppositely arranged, and the tops of the front supporting leg and the rear supporting leg are detachably connected through a first cross rod; a mounting frame with a winch is mounted on the first cross rod, the end, away from the rear supporting leg, of the first cross rod is coaxially connected with a telescopic second cross rod, and the second cross rod is sleeved with a U-shaped frame with a pulley. The front supporting leg adopts two stand columns, a guide rod is arranged between the stand columns to guide a steel rope path, and a triangular reinforcing structure is formed by an inclined rod and a supporting rod; the guide rod cooperates with the first falling protector and the second falling protector, the steel rope is driven by the winch to slide along the guide rod, abnormity is monitored in real time through the falling protectors, and the steel rope is prevented from being out of control and falling. Through modular design, multiple safety protection and an adjustable structure, the problems of high equipment cost, complex disassembly and assembly and poor stability in material transportation of low floors are solved, and the device has the advantages of being rapid in deployment, stable in bearing, safe, reliable and the like.

Description

Technical Field

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

[0002] Vertical transportation equipment is essential in building construction. Tower cranes are typically used for transporting construction materials in high-rise buildings, but they are often dismantled after the main structure is completed. In such cases, materials cannot be effectively transported to the required locations during the construction of inter-floor roof steel structures and curtain walls because the tower cranes have been removed. When the main building has many floors, such as existing buildings with more than 10 floors, construction hoists can be installed outside the building for material transportation. However, when the main building has fewer floors, such as existing residential buildings with 2-4 floors, building construction hoists increases costs, and the fixed location of the hoist makes it inconvenient to change the material transfer location. For lower-rise buildings, truck cranes can also be used for material transportation, but this requires clearing a large work area, and truck cranes have requirements for the hardness of the work area; if the hardness is insufficient, the work area needs to be hardened beforehand. Sometimes, manual handling is also necessary. Manually moving heavy items or equipment is very strenuous and carries the risk of falling, which can damage the items being moved and injure the workers. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a simple lifting tool for construction that is easy to assemble and disassemble, for transporting materials in low-rise buildings.

[0004] The technical solution adopted by this utility model to solve its technical problem is a simple lifting tool for construction, including a front support leg and a rear support leg arranged opposite to each other. The tops of the front support leg and the rear support leg are detachably connected by a first crossbar. A mounting frame is detachably connected to the first crossbar. A winch is installed in the mounting frame. A second crossbar is coaxially arranged at the end of the first crossbar away from the rear support leg. A U-shaped frame is sleeved on the second crossbar. A pulley is rotatably arranged at the bottom of the U-shaped frame.

[0005] The front outrigger includes two opposing columns. A guide rod is provided below the first crossbar, located between the two columns. One end of the guide rod is fixedly connected to a U-shaped frame, and the other end is fixedly connected to a mounting bracket. A steel rope is wound on the winch and extends along the guide rod to a pulley. The lower end of each column is connected by a first support rod. Each column is provided with an inclined rod, one end of which is connected to the column, and the other end is connected to the first support rod. A connecting lug is provided at the bottom of the first support rod. A mounting base is provided at the bottom of the rear outrigger, and a counterweight is provided on the mounting base.

[0006] Furthermore, a balance bar is provided at the top of the front outrigger, and a first inclined rope and a second inclined rope are provided at the top of the balance bar. One end of the first inclined rope is connected to the balance bar, and the other end is connected to the end of the second crossbar away from the first crossbar. One end of the second inclined rope is connected to the balance bar, and the other end is connected to the end of the first crossbar away from the second crossbar.

[0007] Furthermore, the first crossbar is provided with mounting holes, the second crossbar is inserted into the mounting holes, the first crossbar is provided with a plurality of first connecting holes spaced apart along its axial direction, the second crossbar is provided with second connecting holes that cooperate with the first connecting holes, and the first connecting holes and the second connecting holes are connected by a first fastening bolt assembly.

[0008] Furthermore, the mounting bracket is provided with mounting plates located on both sides of the first crossbar, and the mounting plates are provided with third connecting holes that cooperate with the first connecting holes. The first connecting holes and the third connecting holes are connected by a second fastening bolt assembly.

[0009] Furthermore, a roller is bolted between the two mounting plates, and the roller is located above the first crossbar.

[0010] Furthermore, a guide tube is provided on the mounting frame, a first fall arrestor is provided inside the mounting frame, a second fall arrestor is provided on the guide rod, and the steel rope passes through the guide tube, the first fall arrestor, and the second fall arrestor in sequence.

[0011] Furthermore, casters are provided at the bottom of the mounting bracket.

[0012] The beneficial effects of this utility model are:

[0013] Quick assembly and disassembly and flexible deployment: The front outriggers, rear outriggers and crossbars are connected by bolts, eliminating the need for welding. This facilitates transportation and on-site assembly, making it especially suitable for low-rise buildings or temporary construction scenarios.

[0014] Stability and load-bearing capacity optimization: The columns of the front outriggers form a triangular support structure through diagonal braces and the first support rod. Combined with the counterweight design of the rear outriggers, the overall anti-overturning capacity is significantly improved, ensuring stability during the hoisting process.

[0015] Precise guidance and safety protection: The guide rod works in conjunction with the first and second fall arrestors. The steel rope slides along the guide rod under the drive of the winch, and the fall arrestors monitor for abnormalities in real time to prevent the steel rope from falling out of control. Attached Figure Description

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

[0017] Figure 2 yes Figure 1 A diagram from another perspective.

[0018] Reference numerals: 1-Front outrigger; 101-Column; 102-First support rod; 103-Diagonal rod; 104-Connecting lug; 2-Rear outrigger; 201-Mounting base; 202-Counterweight; 3-First crossbar; 4-Mounting frame; 5-Winder; 6-Second crossbar; 7-U-shaped frame; 8-Pulley; 9-Guide rod; 10-Steel rope; 11-Balance bar; 12-First diagonal rope; 13-Second diagonal rope; 14-First connecting hole; 15-First fastening bolt assembly; 16-Mounting plate; 17-Second fastening bolt assembly; 18-Roller; 19-Guide tube; 20-First fall arrestor; 21-Second fall arrestor; 22-Universal wheel. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] like Figure 1 and Figure 2 As shown, this utility model discloses a simple lifting tool for construction, including a front support leg 1 and a rear support leg 2 arranged opposite to each other. The tops of the front support leg 1 and the rear support leg 2 are detachably connected by a first crossbar 3. A mounting frame 4 is detachably connected to the first crossbar 3. A winch 5 is installed inside the mounting frame 4. A second crossbar 6 is coaxially arranged at the end of the first crossbar 3 away from the rear support leg 2. A U-shaped frame 7 is sleeved on the second crossbar 6. A pulley 8 is rotatably arranged at the bottom of the U-shaped frame 7.

[0021] The front support leg 1 includes two opposing columns 101. A guide rod 9 is provided below the first crossbar 3, located between the two columns 101. One end of the guide rod 9 is fixedly connected to the U-shaped frame 7, and the other end is fixedly connected to the mounting bracket 4. A steel rope 10 is wound on the winch 5, extending along the guide rod 9 to the pulley 8. The lower end of each column 101 is connected by a first support rod 102. Each column 101 is provided with a diagonal rod 103, one end of which is connected to the column 101, and the other end is connected to the first support rod 102. A connecting ear plate 104 is provided at the bottom of the first support rod 102. A mounting base 201 is provided at the bottom of the rear support leg 2, and a counterweight 202 is provided on the mounting base 201.

[0022] The front outrigger 1 and the rear outrigger 2 are welded from steel square tubes. The first crossbar 3 is a rectangular cross-section steel tube, and both ends are fixed to the flange plates at the top of the front outrigger 1 and the rear outrigger 2 by high-strength bolts to achieve quick assembly and disassembly. Mounting frame 4 is a cube or cuboid frame. The interior of mounting frame 4 serves as the installation space for winch 5 and can be connected to the first crossbar 3 by bolts. The second crossbar 6 can be integrally formed with the first crossbar 3 and extends outward to the outside of the front support leg 1. A U-shaped frame 7 is fitted on the second crossbar 6. The U-shaped frame 7 includes a first steel plate located above the second crossbar 6, and vertical second steel plates are welded to both sides of the first steel plate. The second crossbar 6 is located between the two second steel plates, and the pulley 8 can be rotatably connected between the two second steel plates through bearings. The guide rod 9 is a square steel bar, horizontally fixed between the two columns 101 of the front support leg 1. It can be fixedly connected to the side wall of the U-shaped frame 7 by steel plates, or it can be bolted to the side wall of the U-shaped frame 7 by U-shaped clamps. This allows one end of the guide rod to be welded to the side wall of the U-shaped frame 7, and the other end to be connected to the mounting frame 4 by bolts. The guide rod provides a straight guiding path for the steel rope 10, reducing friction loss. The diagonal brace 103 is made of angle steel, with both ends welded to the middle of the column 101 and the middle of the first support rod 102, forming a triangular reinforcement structure to enhance the lateral force resistance of the front outrigger 1. The bottom of the first support rod 102 is welded to the connecting ear plate 104, which can be fixed to the ground by anchor bolts. The mounting base 201 is an H-shaped frame formed by welding rectangular steel pipes, which is fixed to the bottom of the rear outrigger 2 by welding. The counterweight 202 can be made of concrete or steel blocks and is placed on the mounting base 201 to balance the forward tilting moment during hoisting.

[0023] To balance the moments of the second crossbar 6 and the first crossbar 3, further see... Figure 1 and Figure 2 The front outrigger 1 is equipped with a balance bar 11 at its top. The balance bar 11 has a first inclined rope 12 and a second inclined rope 13 at its top. One end of the first inclined rope 12 is connected to the balance bar 11, and the other end is connected to the end of the second crossbar 6 away from the first crossbar 3. One end of the second inclined rope 13 is connected to the balance bar 11, and the other end is connected to the end of the first crossbar 3 away from the second crossbar 6. The balance bar 11 is made of channel steel and is vertically welded or bolted to the top of the front outrigger 1. The first inclined rope 12 and the second inclined rope 13 are made of steel wire rope and connect the top of the balance bar 11 to the ends of the second crossbar 6 and the first crossbar 3, respectively, forming a symmetrical tensioning structure to prevent the first crossbar 3 and the second crossbar 6 from bending and deforming due to load eccentricity.

[0024] To adjust the extension length of the second crossbar 6, thereby changing the contact position between the U-shaped frame 7 and the second crossbar 6, and thus the force point, further refer to... Figure 1 and Figure 2The first crossbar 3 has mounting holes, and the second crossbar 6 is inserted into the mounting holes. The first crossbar 3 has multiple first connecting holes 14 spaced apart along its axial direction. The second crossbar 6 has second connecting holes that mate with the first connecting holes 14. The first connecting holes 14 and the second connecting holes are connected by a first fastening bolt assembly 15. The second crossbar 6 is a rectangular tube with a diameter smaller than the mounting holes of the first crossbar 3. The first fastening bolt assembly 15 includes a first bolt and a first nut. After being inserted into the mounting hole, the first bolt passes through the aligned first connecting holes 14 and second connecting holes, and is locked by the first nut, achieving telescopic adjustment. The multiple first connecting holes 14 are equidistantly distributed along the axial direction of the first crossbar 3, providing multiple length options.

[0025] To adjust the extension length of guide rod 9, i.e., to adjust the hoisting position, further refer to... Figure 1 and Figure 2 The mounting frame 4 is provided with mounting plates 16 located on both sides of the first crossbar 3. The mounting plates 16 are provided with third connecting holes that cooperate with the first connecting holes 14. The first connecting holes 14 and the third connecting holes are connected by a second fastening bolt assembly 17. The mounting plates 16 are symmetrically welded or bolted to both sides of the mounting frame 4. The third connecting holes are coaxial with the first connecting holes 14. The second fastening bolt assembly 17 includes a second bolt and a second nut. The second bolt 17 passes through the third connecting hole and the first connecting hole 14 and then the second nut is installed. This allows adjustment of the relative position of the mounting frame 4 and the first crossbar 3, thereby adjusting the extension length of the guide rod 9. After adjustment, the mounting frame 4 and the first crossbar 3 will not shift during hoisting.

[0026] To facilitate adjustment of the relative position of the mounting bracket 4 and the first crossbar 3, further refer to... Figure 1 and Figure 2 A roller 18 is rotatably connected between the two mounting plates 16, and the roller 18 is located above the first crossbar 3. This arrangement allows the mounting bracket 4 to move on the first crossbar 3, thereby adjusting its relative position.

[0027] To further improve safety during hoisting, see [link to relevant documentation]. Figure 1 and Figure 2The mounting frame 4 is equipped with a guide tube 19, and a first fall arrester 20 is installed inside the mounting frame 4. A second fall arrester 21 is installed on the guide rod 9. The steel rope 10 passes through the guide tube 19, the first fall arrester 20, and the second fall arrester 21 in sequence. The guide tube 19 is a circular steel pipe with an arc, and the steel rope 10 is passed through the guide tube 19 to avoid excessive bending. The first fall arrester 20 is integrated inside the mounting frame 4, and the second fall arrester 21 is fixed to the end of the guide rod 9. The steel rope 10 passes through the guide tube 19, the locking mechanism of the first fall arrester 20, and the locking mechanism of the second fall arrester 21 in sequence. When the speed of the steel rope 10 is abnormal, the first fall arrester 20 and the second fall arrester 21 instantly lock the steel rope 10, achieving double fall protection.

[0028] Because the hoist 5 is installed inside the mounting frame 4, the overall weight is relatively heavy. In order to facilitate moving the mounting frame 4 to the installation position during the disassembly and assembly of the lifting equipment, casters 22 are further provided on the bottom of the mounting frame 4.

[0029] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A simple lifting device for construction, comprising a front support leg (1) and a rear support leg (2) arranged opposite to each other, characterized in that: The tops of the front support leg (1) and the rear support leg (2) are detachably connected by a first crossbar (3). A mounting bracket (4) is detachably connected to the first crossbar (3). A winch (5) is installed inside the mounting bracket (4). A second crossbar (6) is coaxially provided at the end of the first crossbar (3) away from the rear support leg (2). A U-shaped frame (7) is sleeved on the second crossbar (6). A pulley (8) is rolled at the bottom of the U-shaped frame (7). The front support leg (1) includes two opposing columns (101). A guide rod (9) is provided below the first crossbar (3). The guide rod (9) is located between the two columns (101). One end of the guide rod (9) is fixedly connected to the U-shaped frame (7), and the other end is fixedly connected to the mounting bracket (4). A steel rope (10) is wound on the winch (5). The steel rope (10) extends along the guide rod (9) to the pulley (8). The lower end of 01) is connected by the first support rod (102). Each column (101) is provided with a diagonal rod (103). One end of the diagonal rod (103) is connected to the column (101) and the other end is connected to the first support rod (102). The bottom of the first support rod (102) is provided with a connecting ear plate (104). The bottom of the rear support leg (2) is provided with a mounting base (201) and a counterweight (202) is provided on the mounting base (201).

2. The simple lifting tool for construction as described in claim 1, characterized in that: The front outrigger (1) is provided with a balance bar (11) at its top. The balance bar (11) is provided with a first inclined rope (12) and a second inclined rope (13) at its top. One end of the first inclined rope (12) is connected to the balance bar (11), and the other end is connected to the end of the second crossbar (6) away from the first crossbar (3). One end of the second inclined rope (13) is connected to the balance bar (11), and the other end is connected to the end of the first crossbar (3) away from the second crossbar (6).

3. The simple lifting tool for construction as described in claim 1, characterized in that: The first crossbar (3) is provided with mounting holes, and the second crossbar (6) is inserted into the mounting holes. The first crossbar (3) is provided with a plurality of first connecting holes (14) spaced apart along its axial direction. The second crossbar (6) is provided with a second connecting hole that cooperates with the first connecting hole (14). The first connecting hole (14) and the second connecting hole are connected by a first fastening bolt assembly (15).

4. The simple lifting tool for construction as described in claim 3, characterized in that: The mounting bracket (4) is provided with mounting plates (16) located on both sides of the first crossbar (3). The mounting plates (16) are provided with third connecting holes that cooperate with the first connecting hole (14). The first connecting hole (14) and the third connecting hole are connected by a second fastening bolt assembly (17).

5. A simple lifting tool for construction as described in claim 4, characterized in that: A roller (18) is rotatably connected between the two mounting plates (16), and the roller (18) is located above the first crossbar (3).

6. A simple lifting tool for construction as described in claim 1, characterized in that: The mounting frame (4) is provided with a guide tube (19), the mounting frame (4) is provided with a first fall arrestor (20), the guide rod (9) is provided with a second fall arrestor (21), and the steel rope (10) passes through the guide tube (19), the first fall arrestor (20) and the second fall arrestor (21) in sequence.

7. A simple lifting tool for construction as described in claim 1, characterized in that: The mounting bracket (4) is provided with casters (22) at its bottom.

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