Lifting appliance for building construction

Abstract

The utility model relates to the technical field of lifting appliances, and discloses a lifting appliance for building construction, which comprises a cross beam, two sides of the cross beam are symmetrically and rotatably connected with lock chains, the lock chains are rotatably connected with lifting rings, the cross beam is internally provided with a notch, the notch is internally and slidably connected with two sliding frames, the cross beam is provided with an adjusting assembly, and the adjusting assembly is arranged on the cross beam. A guide rod is fixed to the sliding frame, a clamping assembly is installed on the sliding frame, the clamping assembly comprises lantern rings fixed to the two sides of the sliding frame, a protection assembly is installed at the bottom of each lantern ring, and each protection assembly comprises a connecting block fixed to the bottom face of the corresponding lantern ring. Potential safety hazards in the hoisting process can be reduced, the personal safety of constructors is guaranteed, damage to field equipment caused by falling of materials is avoided, building components of various specifications and shapes can be flexibly adapted, limitation of materials of a single type is avoided, the application scene of the device is greatly widened, and the device is worthy of popularization and application. And diversified hoisting requirements in building construction are met.

Description

Technical Field

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

[0002] Construction refers to the production activities during the implementation phase of a project. It is the process of building various types of buildings, or the process of turning the lines on the design drawings into physical objects at a designated location. It includes foundation construction, main structure construction, roof construction, decoration construction, etc. The place where construction work is carried out is called the construction site. Lifting equipment is indispensable in construction.

[0003] For example, a construction lifting device with application number CN202323120478.1 includes a load-bearing plate. A lifting ring is fixed to the upper surface of the load-bearing plate to facilitate lifting by a lifting mechanism. Two symmetrical mounting plates are slidably arranged on the lower surface of the load-bearing plate, and each mounting plate has a fixing mechanism on its lower surface for clamping and fixing construction steel pipes. This utility model, by setting a fixing mechanism, enables the lifting device to effectively clamp and fix the construction steel pipe using the arc-shaped clamps on the surfaces of the two movable plates during actual use. Simultaneously, after clamping and fixing, it can effectively press and brake the movable plates, thereby effectively ensuring the stability of the construction steel pipe after the movable plates are fixed. Furthermore, the arrangement of the two mounting plates facilitates clamping and fixing two symmetrical areas on the construction steel pipe, thus effectively solving the defect in the prior art that cannot stably clamp the lifted steel pipe, making it highly practical.

[0004] However, the aforementioned devices can only clamp building components of a single specification or regular shape, and cannot flexibly adapt to building components of different sizes and shapes, thus limiting their applicability. Furthermore, the lack of an effective bottom protection structure means that when the clamping components malfunction or the material surface slips, it can easily lead to material falling off, posing a significant safety hazard.

[0005] Therefore, we propose a construction hoisting tool to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a lifting device for building construction, which solves the problem mentioned in the background art that existing devices can only clamp building components of a single specification or regular shape, and cannot flexibly adapt to building components of different sizes and shapes, thus limiting their application scope. At the same time, they lack an effective bottom protection structure, which can easily lead to material falling off when the clamping components malfunction or the material surface slips, posing a significant safety hazard.

[0007] This utility model provides the following technical solution: a construction hoisting tool, including a crossbeam, with chains symmetrically and rotatably connected to both sides of the crossbeam, and lifting rings rotatably connected to the chains. A notch is provided in the crossbeam, and two slides are slidably connected in the notch. An adjustment assembly is provided on the crossbeam, and guide rods are fixed on the slides. A clamping assembly is installed on the slides, and the clamping assembly includes collars fixed to both sides of the slides. A protective assembly is installed at the bottom of the collars, and the protective assembly includes a connecting block fixed to the bottom surface of the collars.

[0008] Preferably, there are two connecting blocks symmetrically arranged about the slide, and a connecting rod is movably installed inside each of the two connecting blocks. There are two connecting rods, and a U-shaped frame is fixed between the two connecting rods.

[0009] Preferably, a circular plate is fixed to one end of one of the connecting rods, and a square block is fixed to the end of the other connecting rod. A square groove is formed on the side wall of one of the connecting blocks, and the square block engages with the square groove.

[0010] Preferably, the adjustment assembly includes a motor fixed to the side wall of the crossbeam, a rotating rod fixed to the output end of the motor, the rotating rod being rotatably connected to the crossbeam, a bidirectional screw fixedly sleeved on the outer ring of the rotating rod, and the slide being threadedly installed with the bidirectional screw.

[0011] Preferably, an electric actuator is fixed inside the collar, a clamping plate is fixed to the output end of the electric actuator, a plurality of abutment rings are fixed to the side wall of the clamping plate, a sliding rod is slidably connected to the center of each of the plurality of abutment rings, the sliding rod is slidably connected to the clamping plate, a clamping ball is fixed to one end of the sliding rod, and a boss is provided at the other end of the sliding rod.

[0012] Preferably, a spring is sleeved on the outer ring of the slide rod, one end of the spring is fixedly connected to the boss, and the other end of the spring is fixedly connected to the clamping plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. This lifting device, while improving clamping adaptability and stability, further strengthens the safety barrier for lifting operations. Addressing the issues of existing lifting devices lacking bottom protection and being prone to detachment accidents due to clamping malfunctions or material slippage, this device adds a flexibly switchable protective component to provide stable bottom support and protection for the clamped building components. This avoids the risk of material detachment from the outset, significantly reducing safety hazards during lifting. It ensures both the personal safety of construction personnel and prevents damage to on-site equipment caused by material detachment, achieving dual safety assurance.

[0015] 2. This lifting sling effectively enhances its ability to clamp and adapt to different building components, flexibly adapting to various specifications and shapes of building components. It is no longer limited to a single type of material, significantly expanding its applicable scenarios and meeting diverse lifting needs in construction. Simultaneously, through optimized clamping structure design, it enhances the stability of material clamping, preventing loosening and displacement during clamping. This ensures smooth lifting operations while also reducing damage to building components from clamping forces through buffering, protecting the integrity of the materials.

[0016] 3. This lifting device is convenient and efficient to operate, requiring no complicated procedures. Workers can quickly complete a series of steps, including installation, clamping, protective adjustment, and unloading. The structural improvements do not increase operational difficulty, thus improving overall construction efficiency. Furthermore, the protective structure can be flexibly switched, achieving protective functionality without affecting normal clamping and unloading operations. The structural design is reasonable, balancing practicality and ease of use.

[0017] 4. Through modular design improvements, this lifting device expands its protective functions on the basis of the original clamping function. The overall structure is compact and does not take up too much extra space, making it easy to operate in narrow construction sites. It also reduces the difficulty and cost of equipment maintenance. Long-term use can reduce construction investment, and it has good practicality and economy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 .

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 .

[0020] Figure 3 This is a schematic diagram of the adjustment component, clamping component, and protective component of this utility model.

[0021] Figure 4 This is a schematic diagram of the clamping component structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the protective component structure of this utility model. Figure 1 .

[0023] Figure 6 This is a schematic diagram of the protective component structure of this utility model. Figure 2 .

[0024] In the diagram: 1. Crossbeam; 2. Chain; 3. Lifting ring; 4. Notch; 5. Slide; 6. Adjustment assembly; 61. Motor; 62. Rotating rod; 63. Double-acting screw; 7. Guide rod; 8. Clamping assembly; 81. Collar; 82. Electric actuator; 83. Clamping plate; 84. Contact ring; 85. Slide rod; 86. Clamping ball; 87. Boss; 88. Spring; 9. Protective assembly; 91. Connecting block; 92. Square groove; 93. Connecting rod; 931. Round plate; 94. Square block; 95. U-shaped frame. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1: This example aims to address the problem of poor adaptability and insufficient clamping stability of lifting devices for building components of different specifications and shapes. Please refer to [link / reference]. Figure 1 - Figure 4 A type of hoisting tool for construction, including a crossbeam 1, please refer to [link / reference]. Figure 1 The crossbeam 1 has two chains 2 symmetrically rotatably connected to both sides, and lifting rings 3 are rotatably connected to the chains 2. It should be noted that, due to the symmetrical arrangement of the chains 2, there are two chains 2. The crossbeam 1 includes two connectors fixedly installed on the top surface. The connecting ends of the two chains 2 are rotatably connected to the connectors. The ends of the two chains 2 near the lifting rings 3 are connected by a disc in the middle. The lifting rings 3 are rotatably connected to the disc portion of the chains 2. This connection structure is a conventional connection method in the field of lifting equipment; therefore, only a concise description of the movement and limiting relationship between the components is provided, without excessive elaboration on its detailed structure. A recess 4 is provided inside the crossbeam 1, and two carriages 5 are slidably connected within the recess 4. An adjustment assembly 6 is provided on the crossbeam 1. The adjustment assembly 6 includes a motor 61 fixed to the side wall of the crossbeam 1. A rotating rod 62 is fixed to the output end of the motor 61. The rotating rod 62 is rotatably connected to the crossbeam 1. A double-ended screw 63 is fixedly sleeved on the outer ring of the rotating rod 62. The carriages 5 are threadedly installed with the double-ended screw 63.

[0027] A guide rod 7 is fixed on the slide 5, and a clamping assembly 8 is installed on the slide 5. The clamping assembly 8 includes a collar 81 fixed on both sides of the slide 5. An electric push rod 82 is fixed inside the collar 81. A clamping plate 83 is fixed to the output end of the electric push rod 82. Multiple abutment rings 84 are fixed to the side wall of the clamping plate 83. A slide rod 85 is slidably connected to the center of each of the multiple abutment rings 84. The slide rod 85 is slidably connected to the clamping plate 83. A clamping ball 86 is fixed to one end of the slide rod 85. A boss 87 is provided at the other end of the slide rod 85. A spring 88 is sleeved on the outer ring of the slide rod 85. One end of the spring 88 is fixedly connected to the boss 87, and the other end of the spring 88 is fixedly connected to the clamping plate 83.

[0028] In this embodiment: When using this lifting device, firstly, the lifting ring 3 is connected to the crane via ropes to ensure a secure and reliable connection, avoiding the risk of detachment during lifting. After installation, during use, the crane controls the lifting ring 3 to lower the entire lifting device to contact the building component to be lifted. Before contact, the electric actuator 82 is activated, which moves the clamping plate 83 outward, causing the two clamping plates 83 to separate and increase the distance between them, thus providing sufficient space for the placement of the building component.

[0029] Then, according to the width specifications of the building components, the motor 61 in the adjustment assembly 6 is started. The motor 61 drives the rotating rod 62 to rotate, and the rotating rod 62 synchronously drives the bidirectional screw 63 to rotate. Since the slide 5 is threadedly connected to the bidirectional screw 63 and slidably connected in the recess 4 of the crossbeam 1, when the bidirectional screw 63 rotates, it will drive the two slides 5 to move towards or away from each other along the recess 4, thereby adjusting the distance between the two slides 5 so that the clamping assembly 8 can adapt to the width of the building components.

[0030] After adjustment, turn off motor 61, fix the position of slide 5, and then start electric actuator 82. Electric actuator 82 drives clamping plate 83 to move inward, so that the two clamping plates 83 gradually approach the building component. As the clamping plates 83 approach, the clamping ball 86 first contacts the surface of the building component. Continue to push the clamping plates 83. The building component generates a resisting force on the clamping ball 86. The clamping ball 86 is resisted by the building component, which drives the slide rod 85 to slide outward away from the clamping plate 83. The boss 87 on the slide rod 85 moves outward and stretches the spring 88. The spring 88 generates a reverse pulling force to make the clamping ball 86 tightly press against the surface of the component.

[0031] Because the positions of multiple clamping balls 86 can be adjusted independently via the slide bar 85 and the spring 88, it is possible to clamp building components of different shapes. Whether the materials are regular rectangles or circles, or irregular shapes, the multiple clamping balls 86 can adaptively adjust to achieve a tight fit at multiple points. This not only adapts to building components of different widths but also to components of different shapes, improving clamping stability. At the same time, the buffering effect of the spring 88 can prevent excessive clamping force from damaging the building components.

[0032] Example 2: This example aims to address the problem of building components easily detaching from their clamping points and lacking bottom protection during hoisting. This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 and Figure 6 The bottom of the collar 81 is equipped with a protective component 9. The protective component 9 includes a connecting block 91 fixed to the bottom surface of the collar 81. There are two connecting blocks 91 symmetrically arranged about the slide 5. A connecting rod 93 is movably installed inside each of the two connecting blocks 91. There are two connecting rods 93, and a U-shaped frame 95 is fixed between the two connecting rods 93.

[0033] One of the connecting rods 93 has a circular plate 931 fixed to its end side, and the other connecting rod 93 has a square block 94 fixed to its end side. One of the connecting blocks 91 has a square groove 92 on its side wall, and the square block 94 is engaged with the square groove 92.

[0034] In this embodiment: When using the improved lifting device, first complete the connection between the lifting device and the crane and the initial adjustment of the position of the carriage 5 according to the operation steps of embodiment 1. Before clamping, the U-shaped frame 95 is located on both sides of the two carriages 5 and is in a horizontally unfolded state, which will not obstruct the lifting device when clamping building components, nor will it affect the opening and closing and position adjustment of the clamping plate 83.

[0035] After the building component is firmly clamped by the clamping assembly 8 in Embodiment 1, when it needs to be lifted and transported, the square block 94 is manually pulled out. Since the square block 94 is fixedly connected to a connecting rod 93, and the two connecting rods 93 are movably connected to the connecting block 91, and the two connecting rods 93 are connected as a whole by the U-shaped frame 95, when the square block 94 drives the connecting rod 93 connected to it to move outward and disengage from the square groove 92, the connecting rods 93 on both sides can rotate around the movable installation point of the connecting block 91. At this time, the U-shaped frame 95 is rotated. When the U-shaped frame 95 rotates, the connecting rods 93 on both sides will also move in sync and rotate within the connecting block 91, so that the U-shaped frame 95, which was originally in a horizontal lateral state, rotates downward by 90°, so that the U-shaped frame 95 rotates to the bottom of the clamped building component, forming a single-sided bottom support protection structure; then the other end of the U-shaped frame 95 is rotated in the same way to complete the layout of the bottom supports on both sides.

[0036] After rotating to the underside of the clamped building component, push the square block 94 to move the connecting rod 93 inward, accurately engaging the square block 94 into the square groove 92 of the connecting block 91. This engagement of the square block 94 and the square groove 92 fixes the connecting rod 93 in place, thus keeping the U-shaped frame 95 in a protective position under the building component. The U-shaped frame 95 provides bottom protection for the building component, preventing it from falling due to accidental malfunction of the clamping assembly 8 or slippage of the building component during hoisting and handling, effectively improving the safety of the hoisting operation. When hoisting is complete and the building component needs to be unloaded, pull the square block 94 out of the square groove 92 again, rotate the U-shaped frame 95 back to both sides of the slide 5, and then release the clamping assembly 8 to complete the unloading. The operation is convenient and does not affect the normal clamping and unloading process of the lifting equipment.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A hoisting tool for building construction, comprising a crossbeam (1), characterized in that: The crossbeam (1) is symmetrically connected to the two sides by chains (2), and the chains (2) are rotatably connected to the rings (3). The crossbeam (1) has a notch (4) inside, and two slides (5) are slidably connected inside the notch (4). The crossbeam (1) is provided with an adjustment component (6). The slides (5) are fixed with guide rods (7). The slides (5) are equipped with a clamping component (8). The clamping component (8) includes collars (81) fixed on both sides of the slides (5). The bottom of the collars (81) is equipped with a protective component (9). The protective component (9) includes a connecting block (91) fixed on the bottom surface of the collars (81).

2. The construction hoisting tool according to claim 1, characterized in that: There are two connecting blocks (91) symmetrically arranged about the slide (5). A connecting rod (93) is movably installed inside each of the two connecting blocks (91). There are two connecting rods (93), and a U-shaped frame (95) is fixed between the two connecting rods (93).

3. A construction hoisting tool according to claim 2, characterized in that: One of the connecting rods (93) has a circular plate (931) fixed to its end side, and the other connecting rod (93) has a square block (94) fixed to its end side. One of the connecting blocks (91) has a square groove (92) on its side wall, and the square block (94) engages with the square groove (92).

4. A construction hoisting tool according to claim 1, characterized in that: The adjustment assembly (6) includes a motor (61) fixed to the side wall of the crossbeam (1), a rotating rod (62) fixed to the output end of the motor (61), the rotating rod (62) being rotatably connected to the crossbeam (1), a bidirectional screw (63) being fixedly sleeved on the outer ring of the rotating rod (62), and the slide (5) being threadedly installed with the bidirectional screw (63).

5. A construction hoisting tool according to claim 1, characterized in that: An electric actuator (82) is fixed inside the collar (81). A clamping plate (83) is fixed to the output end of the electric actuator (82). Multiple abutment rings (84) are fixed to the side wall of the clamping plate (83). A sliding rod (85) is slidably connected to the center of each of the multiple abutment rings (84). The sliding rod (85) is slidably connected to the clamping plate (83). A clamping ball (86) is fixed to one end of the sliding rod (85). A boss (87) is provided at the other end of the sliding rod (85).

6. A construction hoisting tool according to claim 5, characterized in that: A spring (88) is fitted around the outer ring of the slide rod (85). One end of the spring (88) is fixedly connected to the boss (87), and the other end of the spring (88) is fixedly connected to the clamping plate (83).

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