A hoisting device for construction engineering beams

Abstract

The application discloses a hoisting device for a construction engineering beam, which comprises hoisting mechanisms and steel bar binding supports which are arranged in parallel and at intervals on the ground; wherein the steel bar binding support comprises a height-adjustable support frame and a support crossbar which is laid on the support frame and used for supporting a steel reinforcement cage; the hoisting mechanism comprises a plurality of square tube supporting legs one which are supported on the ground, a top cover which is hinged to the top ends of all the square tube supporting legs one, a lifting ring which is arranged on the top cover, and a hand chain block which is hung on the lifting ring and used for hoisting the steel reinforcement cage; and the steel bar binding support is independently arranged directly below the hoisting mechanism. The application provides an integrated and adjustable device and operation method, which is simple in structure, reliable in operation method, high in safety and stable in movement; the beam steel bar binding can be more convenient and efficient, the support can be easily and quickly removed, the hoisting and beam falling process is safe and accurate, and thus the overall construction quality and engineering durability are improved.

Description

Technical Field

[0001] This application belongs to the technical field of beam reinforcement binding and installation in building engineering, specifically relating to an adjustable rebar cage lifting device, which is particularly suitable for the construction of bottom-mounted foundation beam reinforcement binding, and can also be used in conventional working conditions where the reinforcement cage is placed at the bottom of the beam after the reinforcement is bound at the top of the beam. Background Technology

[0002] High-rise building foundations often employ a combination of foundation beams and waterproofing slabs. The foundation beams are typically of a down-facing design, meaning their top surface is flush with the top surface of the waterproofing slab, and their cross-sectional dimensions are relatively large. Construction of the foundation beams involves first completing the foundation trench, brick formwork, and bedding layer, followed by the binding of the foundation beam reinforcement. Because the foundation beams are down-facing, traditional construction methods typically use timber or steel pipes as temporary supports to hold the reinforcement bars in place before binding them. Once the reinforcement is bound, a tower crane or other lifting equipment is used to temporarily lift the entire reinforcement cage to remove the timber or steel pipes underneath. Finally, the reinforcement cage is placed back into position at the bottom of the beam.

[0003] This traditional construction method has many drawbacks, such as being cumbersome and difficult to operate, requiring the use of large lifting equipment, which increases equipment scheduling and operation time. When removing supports, improper operation can easily cause deformation or displacement of the reinforcing cage, affecting the quality of the reinforcing bar binding. At the same time, there are safety hazards during lifting and lowering of the beams, such as unstable hoisting, tilting or falling of the reinforcing cage.

[0004] Furthermore, traditional support materials such as timber or steel pipes require frequent disassembly and replacement, resulting in low construction efficiency, significant material waste, and difficulty in adapting to varying ground flatness and tying height requirements at different construction sites. Therefore, there is an urgent need for a specialized device and method that can simplify the operation process, improve construction efficiency, and ensure safe and accurate tying and lowering of beams to solve the practical problems in the tying and installation of reinforcing bars for down-supported foundation beams. Summary of the Invention

[0005] This application provides a lifting device for building beams, which solves the technical problems of inconvenience, low efficiency, many safety hazards and large material loss caused by the reliance on temporary supports and large lifting equipment in the traditional bottom-mounted foundation beam reinforcement binding construction.

[0006] To solve at least one of the above-mentioned technical problems, the technical solution adopted in this application is:

[0007] A lifting device for beams in building construction includes lifting mechanisms and rebar tying supports arranged in parallel at intervals on the ground; wherein...

[0008] The rebar tying support includes a height-adjustable support frame and support crossbars laid on the support frame to support the rebar cage.

[0009] The lifting mechanism includes several square tube legs supported on the ground, a top cover hinged to the top of all the square tube legs, a lifting ring set on the top cover, and a hand chain hoist suspended on the lifting ring for lifting the steel cage.

[0010] The rebar tying bracket is independently installed directly below the lifting mechanism.

[0011] Furthermore, the support frame includes multiple height-adjustable square tube legs and connecting rods connecting the square tube legs. The support crossbar is fixed to the root of the square tube legs by a connecting plate, and the support crossbar is arranged along the width direction of the base groove.

[0012] Furthermore, the square tube support leg 2 is provided with a plurality of bolt holes 2 along its length direction, and the connecting rod cooperates with the bolt holes 2 at different heights through the height adjustment bolt 2 to realize the height adjustment of the support frame; the connecting rods are arranged in parallel along the length direction of the base groove.

[0013] Furthermore, the square tube support leg is hinged to the top cover via an ear plate, and the square tube support leg is a pull-out, height-adjustable structure.

[0014] Furthermore, the height of the square tube support leg is achieved through multiple bolt holes provided thereon and a height adjustment bolt that mates with the bolt holes.

[0015] Furthermore, adjacent square tube legs are connected by a fixed chain, and the two ends of the fixed chain are connected and fixed by a connecting ring welded to the square tube leg.

[0016] Furthermore, the fixed chain arranged along the width direction of the foundation trench is positioned higher than the fixed chain arranged along the length direction of the foundation trench; and the fixed chains arranged in alignment are at the same height.

[0017] Furthermore, the lifting end of the hand chain hoist is connected to a hook.

[0018] Furthermore, both the rebar binding bracket and the lifting mechanism have rubber bases on their contact surfaces with the ground.

[0019] The beam lifting device for building engineering designed in this application provides an integrated and adjustable device and operation method. It is not only simple in structure and reliable in operation, but also highly safe and stable in movement. It can make beam reinforcement binding more convenient and efficient, support dismantling simple and fast, and beam lifting and lowering process safe and precise, thereby improving the overall construction quality and project durability.

[0020] The adjustable rebar tying bracket and lifting mechanism enable convenient and quick rebar tying for beams. The bracket height can be flexibly adjusted according to site conditions, providing a stable working platform and ensuring high tying quality. The lifting mechanism is controlled by a hand-operated hoist, which is easy to operate and does not require reliance on large equipment such as tower cranes, thus reducing construction costs and equipment dependence and improving efficiency.

[0021] The lifting device design in this application features a fixed chain to enhance spatial stability, a spring-loaded hook to prevent disengagement, and a rubber base for anti-slip cushioning, effectively avoiding the risks of displacement, tilting, or overturning during the lifting process and ensuring construction safety.

[0022] Furthermore, the lifting device components of this application can be reused multiple times, reducing the consumption of traditional materials and being economical and environmentally friendly; they are applicable to various working conditions, such as the binding of reinforcing bars for down-reverse foundation beams or conventional beams, and have strong versatility. Moreover, by precisely controlling the beam drop position, the installation of the reinforcing cage is ensured to be accurate, without deviation or deformation, thereby improving the overall quality and durability of the foundation project. Attached Figure Description

[0023] Figure 1 This is a three-dimensional drawing of the lifting mechanism in this application;

[0024] Figure 2 This is a three-dimensional view of the rebar tying support in this application;

[0025] Figure 3 This is a three-dimensional drawing of the hoisting construction of the foundation beam reinforcement cage in this application;

[0026] Figure 4 This is a partial example drawing of the hoisting of the foundation beam reinforcement cage in this application;

[0027] Figure 5 This is a side view of the foundation beam reinforcement cage hoisting construction in this application;

[0028] Figure 6 This is a 3D model of the hoisting of the foundation beam reinforcement cage after the reinforcement binding support was removed;

[0029] Figure 7 This is a three-dimensional view of the foundation beam reinforcement cage in this application after it has been lowered into the foundation trench.

[0030] In the picture:

[0031] 1. Lifting mechanism; 101. Top cover; 102. Ear plate; 103. Lifting ring; 104. Hand chain hoist; 105. Square tube support leg; 106. Bolt hole; 107. Height adjustment bolt; 108. Lifting gear; 109. Hand chain; 110. Sling; 111. Fixed chain; 112. Linking ring; 113. Hook; 114. Rubber base;

[0032] 2. Rebar binding support; 201. Bolt hole 2; 202. Connecting rod; 203. Height adjustment bolt 2; 204. Square tube support leg 2; 205. Support crossbar; 206. Connecting plate; 207. Rubber base 2;

[0033] 3. Reinforcing cage; 4. Foundation trench. Detailed Implementation

[0034] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0035] This embodiment proposes a lifting device for beams in building construction, such as... Figure 3 As shown, the system includes a lifting mechanism 1 and a rebar tying support 2 arranged in parallel on the ground. The rebar tying support 2 includes a height-adjustable support frame and crossbars 205 laid on the support frame to support the rebar cage 3. The lifting mechanism 1 includes several square tube legs 105 supported on the ground, a top cover 101 hinged to the top of all the square tube legs 105, lifting rings 103 mounted on the top cover 101, and a hand-operated hoist 104 suspended from the lifting rings 103 for hoisting the rebar cage 3; the rebar tying support 2 is independently positioned directly below the lifting mechanism 1.

[0036] like Figure 1 As shown, the lifting mechanism 1 includes four pull-out, height-adjustable square tube legs 105. Each square tube leg 105 comprises two stacked square tubes, which can be square or rectangular in cross-section and are made of high-strength steel. A rubber base 114 is provided on the bottom surface of each square tube leg 105, i.e., the end face in contact with the ground. The rubber base 114 is made of wear-resistant rubber and has anti-slip textures on the bottom.

[0037] Four square tube legs 105 are hinged to the top cover 101 via ear plates 102; the top cover 101 is a circular steel plate, and the lifting ring 103 is located at the center of the top cover 101. The hand chain hoist 104 is connected to the lifting ring 103. The hand chain hoist 104 is equipped with a hand chain 109, and a hook 113 is connected to the end of the lifting device 108 of the hand chain hoist 104.

[0038] The height of the square tube support leg 105 is achieved through multiple bolt holes 106 and height adjustment bolts 107 that cooperate with the bolt holes 106. The adjustment positions of all square tube support legs 105 and the positions of the adjustment bolt holes 106 are the same, in order to ensure the consistency of height adjustment.

[0039] To ensure the safety and operability of the installation position of the reinforcing cage 3, adjacent square tube legs 105 are required to be connected by a fixing chain 111, and the two ends of the fixing chain 111 are connected and fixed by connecting rings 112 welded to the square tube legs 105. The height difference design allows the fixing chain 111 to bear the tensile force in different directions in the width and length directions, more effectively resisting the lateral force generated during hoisting.

[0040] The fixed chains 111 installed along the width of the foundation trench 4 are positioned higher than those installed along the length of the foundation trench 4; and the fixed chains 111 installed in alignment are at the same height. By installing chains at different heights along the width and length of the foundation trench 4, the overall stability is enhanced, preventing the lifting mechanism 1 from tilting or deforming during lifting. If the fixed chains 111 along the width of the foundation trench 4 are too low, they will conflict with the reinforcing cage 3, interfering with its lifting. Since the reinforcing cage 3 extends along the length of the foundation trench, the fixed chains 111 along the length of the foundation trench can be positioned close to the ground. This not only avoids affecting the lifting or lowering of the reinforcing cage 3 but also further improves the stability and safety of the square tube support leg 105 installation.

[0041] like Figure 2 As shown, the support frame includes multiple height-adjustable square tube legs 204 and connecting rods 202 connecting the square tube legs 204. The support crossbar 205 is fixed to the root of the square tube legs 204 by connecting plates 206, and the support crossbar 205 is set along the width direction of the foundation trench 4, that is, the support crossbar 205 is set across the width direction of the foundation trench 4, and is used to support the binding of the beam reinforcement on it.

[0042] Multiple bolt holes 201 are provided along the length of the square tube support leg 204. The connecting rod 202 is engaged with bolt holes 201 at different heights via height adjusting bolts 203 to adjust the height of the support frame. The connecting rods 202 are arranged in parallel along the length of the base groove 4, and the position of the connecting rods 202 is higher than the position of the support crossbar 205. A rubber base 207 is provided on the bottom surface of each square tube support leg 204.

[0043] An operating method for a lifting device for beams in building construction, employing the device described above, such as... Figure 3-7 As shown, the steps include:

[0044] S1. Foundation trench construction;

[0045] Throughout the construction process, the base layer treatment is carried out first, that is, the construction treatment of the foundation beam trench, brick formwork, foundation waterproofing membrane and protective layer is completed first, to ensure that the size and depth of the trench 4 meet the design requirements, and the bottom of the trench 4 is flat, solid and free of debris and water accumulation.

[0046] S2. Assemble the rebar binding support;

[0047] When installing the rebar tying bracket 2, first process the square tube support leg 204 and the connecting plate 206. The square tube support leg 204 is made of high-strength rectangular steel. The connecting plate 206 is made of steel plate with pre-drilled bolt holes 201 in the middle to match the square tube support leg 204. The connecting rod 202 is made of the same steel as the square tube support leg 204 to ensure effective connection and enhance the stability of the bracket. The bracket crossbar 205 consists of two square tubes, with the same material and specifications as the square tube support leg 204. Its length is determined according to the width of the foundation beam to ensure a stable support surface for the beam rebar.

[0048] The pre-processed square tube support legs 204 are connected to the connecting rods 202 using height adjusting bolts 203 to assemble a support frame. Simultaneously, the support crossbars 205 are fixed to the base of the square tube support legs 204 using connecting plates 206. The connecting rods 202 are used to connect the individual square tube support legs 204 to form a stable three-dimensional structure.

[0049] Based on the flatness of the ground at the construction site and the requirements for the height of the rebar tying, screw the height adjustment bolt 203 into the appropriate bolt hole 201 on the square tube support leg 204. By rotating the height adjustment bolt 203, adjust the extension length of the square tube support leg 204 so that the rebar tying bracket 2 reaches the required height, ensuring that the crossbar 205 of the bracket is horizontal and at a suitable height for the rebar tying operation.

[0050] Install rubber base 207 at the bottom of square tube support leg 204 to ensure that rubber base 207 is in close contact with the ground, increase the friction between the support and the ground, and prevent the support from sliding during construction.

[0051] S3. Tie the reinforcing cage on the reinforcing bar tying support;

[0052] The foundation beam reinforcement bars are moved to the crossbar 205 of the reinforcement binding support 2, and the bars are placed according to the design drawings to ensure accurate spacing and position. Construction workers then bind the reinforcement bars on the crossbar 205, using wire and other binding materials to securely connect the bars, forming a reinforcement cage 3. The binding process is carried out according to the construction drawings to ensure quality.

[0053] S4. Set up the lifting mechanism;

[0054] The square tube support leg 105 is hinged to the top cover 101 via the ear plate 102. The square tube support leg 105 is then unfolded, and its direction is adjusted via the ear plate 102 to adapt to the ground conditions of the construction site and achieve a stable support state.

[0055] Adjust the length of each square tube support leg 105 by engaging the height adjustment bolt 107 with the bolt hole 106 to keep the top cover 101 level. Install rubber bases 114 at the bottom of the square tube support legs 105 to ensure tight contact with the ground and prevent the support from sliding.

[0056] Using a fixed chain 111 to connect the adjacent square tube support leg 105 via a link ring 112 enhances the spatial stability of the lifting mechanism 1.

[0057] S5. Install lifting components;

[0058] like Figure 3 As shown, the hand chain hoist 104 is suspended on the lifting ring 103; the sling 110 is passed through the lifting device 108 and connected to the hand chain hoist 104; the lifting device 108 is connected to the sling 110; ensure that the position of the lifting ring 103 is convenient for installing the hand chain hoist 104.

[0059] S6. Lifting preparation;

[0060] like Figure 4-5 As shown, hook 113 is hooked onto the preset lifting point of the steel cage, and the square tube support leg 204 is positioned in the gap between the steel cage 3 and the fixed chain 111, ensuring that the spring return device at the opening of hook 113 is closed, forming a closed structure and reliably connected to the steel cage 3; check whether the sling 110, the hand chain hoist 104 and each connection point are secure.

[0061] S7. Lifting operation;

[0062] like Figure 6 As shown, the operator slowly pulls the hand chain 109 to drive the internal transmission mechanism of the hand chain hoist 104, raising the sling 110 to lift the steel cage 3 smoothly. The lifting height of the sling 110 should be such that the steel binding bracket 2 can be removed. During the lifting process, observe the status of the lifting mechanism 1 and the steel cage 3, and stop immediately if any abnormality is found.

[0063] S8, Beam lowering operation;

[0064] like Figure 7 As shown, after the reinforcing cage 3 is lifted and stabilized, remove the height adjustment bolt 203 of the reinforcing bar binding bracket 2, remove the reinforcing bar binding bracket 2, and move it to a safe location for storage. Then, slowly release the hand chain 109 and control the descent speed of the sling 110 to ensure that the reinforcing cage 3 is accurately lowered to the designed position of the foundation trench 4. During the beam lowering process, arrange for a dedicated person to observe the position of the reinforcing cage 3 to ensure that the reinforcing cage 3 does not deviate or tilt. When there are multiple points for simultaneous lifting and lowering, ensure that the lifting at each point is stable and the lowering speed of the beam is uniform.

[0065] The lifting device and operating method for building beams designed in this application provide an integrated and adjustable device and operating method. It is not only simple in structure but also reliable in operation, highly safe and stable in movement. It can make beam reinforcement binding more convenient and efficient, support dismantling simple and fast, and lifting and lowering beams safe and precise, thereby improving the overall construction quality and project durability.

[0066] The adjustable rebar tying bracket and lifting mechanism enable convenient and quick rebar tying for beams. The bracket height can be flexibly adjusted according to site conditions, providing a stable working platform and ensuring high tying quality. The lifting mechanism is controlled by a hand-operated hoist, which is easy to operate and does not require reliance on large equipment such as tower cranes, thus reducing construction costs and equipment dependence and improving efficiency.

[0067] The lifting device design in this application features a fixed chain to enhance spatial stability, a spring-loaded hook to prevent disengagement, and a rubber base for anti-slip cushioning, effectively avoiding the risks of displacement, tilting, or overturning during the lifting process and ensuring construction safety.

[0068] Furthermore, the lifting device components of this application can be reused multiple times, reducing the consumption of traditional materials and being economical and environmentally friendly; they are applicable to various working conditions, such as the binding of reinforcing bars for down-reverse foundation beams or conventional beams, and have strong versatility. Moreover, by precisely controlling the beam drop position, the installation of the reinforcing cage is ensured to be accurate, without deviation or deformation, thereby improving the overall quality and durability of the foundation project.

[0069] The embodiments of this application have been described in detail above. These descriptions are merely preferred embodiments and should not be construed as limiting the scope of this application. All equivalent variations and modifications made within the scope of this application should still fall within the patent coverage of this application.

Claims

1. A lifting device for beams in building construction, characterized in that, This includes lifting mechanisms and rebar tying supports arranged in parallel at intervals on the ground; among which, The rebar tying support includes a height-adjustable support frame and support crossbars laid on the support frame to support the rebar cage. The lifting mechanism includes several square tube legs supported on the ground, a top cover hinged to the top of all the square tube legs, a lifting ring set on the top cover, and a hand chain hoist suspended on the lifting ring for lifting the steel cage. The rebar tying bracket is independently installed directly below the lifting mechanism.

2. The lifting device for beams in building construction according to claim 1, characterized in that, The support frame includes multiple height-adjustable square tube legs and connecting rods connecting the square tube legs. The support crossbar is fixed to the root of the square tube legs by a connecting plate, and the support crossbar is arranged along the width direction of the base groove.

3. A lifting device for beams in building construction according to claim 2, characterized in that, The square tube support leg 2 has multiple bolt holes 2 along its length direction. The connecting rod cooperates with the bolt holes 2 at different heights through the height adjustment bolt 2 to realize the height adjustment of the support frame. The connecting rods are arranged in parallel along the length direction of the base groove.

4. A lifting device for beams in building construction according to any one of claims 1-3, characterized in that, The square tube support leg is hinged to the top cover via an ear plate, and the square tube support leg is a pull-out, height-adjustable structure.

5. A lifting device for beams in building construction according to claim 4, characterized in that, The height of the square tube support leg is achieved by multiple bolt holes and height adjustment bolts that mate with the bolt holes.

6. A lifting device for beams in building construction according to claim 4, characterized in that, The adjacent square tube legs are connected by a fixed chain, and the two ends of the fixed chain are connected and fixed by a connecting ring welded to the square tube leg.

7. A lifting device for beams in building construction according to claim 6, characterized in that, The fixed chain arranged along the width of the foundation trench is positioned higher than the fixed chain arranged along the length of the foundation trench; and the fixed chains arranged in alignment are at the same height.

8. A lifting device for beams in building construction according to claim 6, characterized in that, The lifting device of the hand chain hoist is connected to a hook at the end.

9. A lifting device for beams in building construction according to any one of claims 1-3 and 5-8, characterized in that, Both the rebar tying bracket and the lifting mechanism have rubber bases on their contact surfaces with the ground.

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