Temporary shelving platform for hoisting reinforcement cage

Abstract

The utility model provides a temporary shelving platform for hoisting a reinforcement cage, which comprises a shelving frame provided with a via hole for the reinforcement cage to pass through; the number of the movable shelving arms is at least three, the movable shelving arms are arranged on the shelving frame at intervals around the periphery of the reinforcement cage, one end of each movable shelving arm faces the axis of the reinforcement cage, a shelving part is arranged at the end of each movable shelving arm, and the shelving parts vertically abut against interval grooves in the reinforcement cage, so that axial supporting of the reinforcement cage is achieved; and the driving assembly is used for synchronously driving the multiple movable shelving arms, so that the shelving part can move between a first position abutting against the reinforcement cage spacing groove and a second position separating from the reinforcement cage spacing groove. The temporary shelving platform for hoisting the reinforcement cage solves the problems that an existing temporary shelving platform is poor in safety and inconvenient to operate during installation.

Description

Technical Field

[0001] This utility model relates to the field of construction equipment, specifically to a temporary support platform for hoisting steel cages. Background Technology

[0002] During the construction of bored pile reinforcement cages, due to the long length of the cages and limitations imposed by the limited space at the construction site and the capacity of lifting equipment, it is usually necessary to install the reinforcement cages in sections. In traditional construction methods, steel pipes, channel steel, or I-beams are commonly used as support beams to temporarily fix the reinforcement cage sections to the borehole opening. However, this approach has many drawbacks.

[0003] From a safety perspective, these temporary structures lack stability. Construction sites are complex environments with frequent personnel and equipment movement. Under repeated vibrations, collisions, and the weight of the reinforcing cages themselves, these temporary supporting beam structures are highly susceptible to displacement, deformation, and even collapse. If this happens, it will not only pose a direct threat to the lives of construction workers performing drilling operations, potentially leading to serious accidents such as injury or burial, but it may also damage surrounding construction equipment, delay construction progress, and cause significant economic losses. For example, in areas with poor geological conditions, even slight ground settlement can cause a seemingly stable supporting beam structure to lose its balance, leading to a safety accident.

[0004] From an operational perspective, to ensure the safety of the rebar cage, the steel pipes, channel steel, or I-beams used are typically large in size and heavy in weight. During installation, a significant amount of manpower and time is required to move and adjust these support beams. Construction workers need to use additional hoisting equipment to carefully place them in the designated positions and precisely adjust their positions to ensure the rebar cage is accurately placed. This process not only increases the complexity of construction but also makes it easy for improper operation to lead to inaccurate placement of the support beams, thus affecting the installation accuracy of the rebar cage. Moreover, after construction is completed, removing these heavy support beams also requires a significant amount of manpower and resources, further reducing construction efficiency. Summary of the Invention

[0005] The problem this utility model aims to solve is to provide a temporary support platform for hoisting steel cages, thereby addressing the issues of poor safety and inconvenience in the installation of existing temporary support platforms.

[0006] The technical solution adopted by this utility model to solve the above problems is: a temporary support platform for hoisting steel cages, comprising:

[0007] A support frame having through holes for the passage of a reinforcing cage;

[0008] The movable support arms, numbering at least three, are arranged at intervals on the support frame around the outer periphery of the reinforcing cage. One end of each movable support arm faces the axis of the reinforcing cage, and this end is provided with a support part. The support part abuts vertically against the interval groove on the reinforcing cage, thereby achieving axial support for the reinforcing cage.

[0009] A drive assembly for synchronously driving multiple movable support arms, enabling the support portion to move between a first position abutting against the rebar cage spacer and a second position disengaging from the rebar cage spacer.

[0010] Compared to traditional temporary rebar cage support structures built using steel pipes, channel steel, or I-beams, the new temporary rebar cage hoisting platform offers significant advantages in safety and ease of operation. In terms of safety, the support frame features through-holes for the rebar cage to pass through, providing a stable foundation. At least three movable support arms are spaced around the outer perimeter of the rebar cage, achieving multi-point support and evenly distributing the weight of the cage, effectively reducing the risk of structural deformation or collapse due to excessive stress at a single point. Simultaneously, the drive assembly precisely controls the position of the movable support arms, ensuring a tight vertical connection between the support arm and the rebar cage's spacing groove, forming a stable connection and reducing interference from external vibrations and collisions on the stability of the rebar cage, thus minimizing safety threats. In terms of ease of operation, the traditional heavy support beam is cumbersome to transport and install, while the new platform synchronously drives the movable support arm through the drive component. Construction personnel can easily switch the support part between working positions by operating the drive component, without the need for additional hoisting equipment for complicated handling and position adjustment, which greatly simplifies the installation process. When dismantling, the drive component makes the movable support arm detach from the steel cage slot, quickly completing the separation, saving a lot of manpower and time costs, and significantly improving the overall construction efficiency.

[0011] Furthermore, the movable support arm has a vertically upward protrusion at one end near the reinforcing cage to form an anti-slip protrusion, and the support part is located on the side of the anti-slip protrusion facing away from the reinforcing cage.

[0012] When the rebar cage is placed on the support, the anti-slip protrusions effectively prevent the cage from sliding or shifting horizontally. Especially under conditions such as vibrations at the construction site and slight swaying of lifting equipment, the anti-slip protrusions can greatly enhance the stability of the rebar cage placement, ensuring the safety and reliability of the construction process.

[0013] Furthermore, the drive assembly includes an output assembly and a power assembly. The output assembly includes a drive gear, a coaxial gear, a driven gear, and a rack. The rack is disposed opposite to each other on both sides of each movable support arm, and its opposite end face is provided with tooth surfaces arranged radially along the reinforcing cage. The coaxial gear and the driven gear are meshed between two tooth surfaces, each meshing with one of the tooth surfaces. The drive gear and the coaxial gear are coaxial and fixedly disposed with each other. The power assembly is used to synchronously drive multiple drive gears to rotate clockwise or counterclockwise and drive the coaxial gear to rotate with the drive gear. When the coaxial gear rotates clockwise, it drives the support part to move toward a first position. When the coaxial gear rotates counterclockwise, it drives the support part to move toward a second position.

[0014] This drive assembly, composed of multiple gears and racks, enables precise synchronous control of multiple movable support arms. The power unit drives the drive gear to rotate, which in turn drives the coaxial gear and driven gear to work together, allowing each movable support arm to move between the first and second positions at the same speed and in the same manner. This precise synchronization ensures the stability of the rebar cage during placement and detachment, preventing tilting or swaying of the rebar cage due to inconsistent movements of the movable support arms, thus improving construction safety and accuracy.

[0015] Furthermore, the power assembly includes a synchronous motor and a transmission chain. The synchronous motor is mounted on the support frame and has an output gear on its output end. The transmission chain is arranged around the periphery of the support frame and meshes with the output gear. The drive gear meshes with the transmission chain.

[0016] Synchronous motors, as power sources, provide stable and continuous power output. Through the meshing of the output gear and the drive chain, the motor's power is evenly transmitted to the various driving gears arranged around the support frame. The drive chain has a relatively simple structure, making installation and maintenance convenient. Compared to some complex hydraulic or pneumatic transmission systems, chain drives do not require complex piping and sealing devices, reducing the difficulty of equipment installation and maintenance costs.

[0017] Furthermore, the support frame is also provided with a support structure, which is located in the middle of the movable support arm. The support structure is used to generate a reaction force on the middle of the movable support arm to counteract the vertically downward pressure when the steel cage applies a vertically downward pressure to the support part of the movable support arm.

[0018] By providing support in the middle of the movable support arm, the support structure helps maintain the straightness and stability of the movable support arm.

[0019] Furthermore, the support structure includes a lower support rod and an upper pressure block. The lower support rod is fixedly connected to the support frame, with its middle portion abutting against the lower end face of the movable support arm. The upper pressure block is fixed above the abutting area between the lower support rod and the movable support arm, with both ends of the upper pressure block fixedly connected to the upper end face of the lower support rod, and the lower end face of its middle portion abutting against the upper end face of the movable support arm.

[0020] The combination of the lower support rod and the upper pressure block forms a comprehensive and stable support for the movable support arm. The lower support rod provides the main support force from below, bearing most of the pressure applied by the reinforcing cage; the upper pressure block restrains the movable support arm from above, preventing it from tilting upwards or displacing laterally under stress. This combined upper and lower support method allows the movable support arm to maintain a stable posture under pressure, improving the reliability of the entire support structure.

[0021] Furthermore, it also includes a sliding mechanism set at both ends of the upper pressure block. The sliding mechanism includes a plurality of sliding wheels arranged radially at intervals along the steel cage. The sliding surface of the sliding wheel rolls in cooperation with the two sides of the movable support arm to reduce the friction between the movable support arm and the two sides of the upper pressure block.

[0022] The sliding mechanism significantly reduces the resistance of the movable support arm during movement. When the drive assembly moves the movable support arm between the first and second positions, the rolling contact between the sliding wheels and the sides of the movable support arm replaces traditional sliding friction, greatly reducing friction. This makes the movement of the movable support arm smoother and reduces the workload of the drive assembly. Attached Figure Description

[0023] Figure 1 This is a top view of the present invention;

[0024] Figure 2 This is a perspective view of the present utility model;

[0025] Figure 3 for Figure 2 Enlarged view of the circled area;

[0026] Figure 4 This is an exploded view of the support structure and the movable support arm of this utility model.

[0027] Diagram: 1. Reinforcing cage; 2. Support frame; 3. Movable support arm; 3.1. Support part; 3.2. Anti-slip protrusion; 4. Drive assembly; 4.1. Output assembly; 4.1.1. Drive gear; 4.1.2. Coaxial gear; 4.1.3. Driven gear; 4.1.4. Spur rack; 4.1.4.1. Tooth surface; 4.2. Power assembly; 4.2.1. Synchronous motor; 4.2.2. Transmission chain; 4.2.3. Output gear; 5. Support structure; 5.1. Lower support rod; 5.2. Upper pressure block; 6. Sliding mechanism; 6.1. Sliding wheel. Detailed Implementation

[0028] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0029] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0030] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

[0031] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0032] Please see Figures 1 to 4 A temporary support platform for hoisting a reinforcing cage mainly consists of a support frame 2, movable support arms 3, a drive assembly 4, a support structure 5, and a sliding mechanism 6. The support frame 2 is rectangular and has through holes through which the reinforcing cage 1 can pass. Four movable support arms 3 are arranged at the four corners of the support frame 2, spaced apart around the outer perimeter of the reinforcing cage 1. Each movable support arm 3 has a support portion 3.1 at its end facing the axis of the reinforcing cage 1. This support portion 3.1 vertically abuts against the gap groove on the reinforcing cage 1 (the gap groove is formed by the vertical and axial reinforcing bars of the reinforcing cage), thereby achieving axial support for the reinforcing cage 1. To prevent the reinforcing cage 1 from sliding, the end of the movable support arm 3 closest to the reinforcing cage 1 protrudes vertically upward to form an anti-slip protrusion 3.2, and the support portion 3.1 is located on the side of the anti-slip protrusion 3.2 facing away from the reinforcing cage 1.

[0033] The drive assembly 4 is used to synchronously drive the four movable support arms 3, enabling the support part 3.1 to move between a first position abutting against the spacer groove of the reinforcing cage 1 and a second position disengaging from the spacer groove. The drive assembly 4 consists of an output assembly 4.1 and a power assembly 4.2. The output assembly 4.1 includes a drive gear 4.1.1, a coaxial gear 4.1.2, a driven gear 4.1.3, and a rack 4.1.4. The rack 4.1.4 is arranged opposite to each other on both sides of each movable support arm 3, and its opposite end face has a tooth surface 4.1.4.1 along the radial direction of the reinforcing cage 1. The coaxial gear 4.1.2 meshes with the driven gear 4.1.3 and each meshes with one tooth surface 4.1.4.1. The drive gear 4.1.1 is coaxially fixed with the coaxial gear 4.1.2. The power assembly 4.2 includes a synchronous motor 4.2.1, a transmission chain 4.2.2, and an output gear 4.2.3. The synchronous motor 4.2.1 is mounted on the support frame 2, and its output gear 4.2.3 meshes with the transmission chain 4.2.2 surrounding the support frame 2. The drive gear 4.1.1 then meshes with the transmission chain 4.2.2. When the synchronous motor 4.2.1 drives the drive gear 4.1.1 to rotate, the coaxial gear 4.1.2 rotates accordingly. Clockwise rotation moves the support part 3.1 to the first position, and counterclockwise rotation moves it to the second position.

[0034] In addition, a support structure 5 is provided on the support frame 2, which is located in the middle of the movable support arm 3. When the reinforcing cage 1 applies a vertical downward pressure to the support part 3.1, the support structure 5 can generate a reaction force to counteract the pressure. The support structure 5 is specifically composed of a lower support rod 5.1 and an upper pressure block 5.2. The lower support rod 5.1 is fixed to the support frame 2, and its middle part abuts against the lower end face of the movable support arm 3. The upper pressure block 5.2 is fixed above the abutment area between the lower support rod 5.1 and the movable support arm 3. The two ends of the upper pressure block 5.2 are fixedly connected to the upper end face of the lower support rod 5.1, and the lower end face of its middle part abuts against the upper end face of the movable support arm 3. In order to reduce the friction between the movable support arm 3 and the two sides of the upper pressure block 5.2, a sliding mechanism 6 is provided at both ends of the upper pressure block 5.2. It includes a number of sliding wheels 6.1 arranged radially at intervals along the reinforcing cage 1. The sliding surface of the sliding wheel 6.1 rolls in cooperation with the two sides of the movable support arm 3.

[0035] The above description only illustrates the preferred embodiment of this utility model and should not be construed as limiting the scope of the claims. This utility model is not limited to the above embodiments, and variations in its specific structure are permitted. All changes made within the scope of the independent claims of this utility model are also within the scope of protection of this utility model.

Claims

1. A steel cage hoisting temporary resting platform characterized by, The utility model relates to a kind of steel bar cage lifting device, including: Rest frame (2), the rest frame (2) is equipped with for steel bar cage (1) to pass through via-hole; Movable rest arm (3), the movable rest arm (3) is at least three, spaced arrangement is presented on rest frame (2) around the outer circumference of steel bar cage (1), the end of each movable rest arm (3) is towards steel bar cage (1) axle center, this end is equipped with rest part (3.1), rest part (3.1) is vertically contacted with the interval slot on steel bar cage (1), to realize the axial support of steel bar cage (1) in this way; Driving assembly (4), the driving assembly (4) is used for synchronously driving multiple movable rest arms (3), so that rest part (3.1) can be moved between the first position of interval slot of steel bar cage (1) and the second position of interval slot of steel bar cage (1); The end of the movable rest arm (3) close to steel bar cage (1) is vertically upward and forms anti-skid protrusion (3.2), and the rest part (3.1) is arranged on the side of anti-skid protrusion (3.2) away from steel bar cage (1); The driving assembly (4) includes output assembly (4.1) and power assembly (4.2), the output assembly (4.1) includes driving gear (4.1.1), coaxial gear (4.1.2), driven gear (4.1.3) and straight rack (4.1.4), the straight rack (4.1.4) is oppositely arranged on both sides of each movable rest arm (3), and the opposite end faces are provided with tooth surfaces (4.1.4.1) arranged along the radial direction of steel bar cage (1), the coaxial gear (4.1.2) and the driven gear (4.1.3) are arranged between the two tooth surfaces (4.1.4.1) and are in mesh with each other, and the two are respectively in mesh with one of the tooth surfaces (4.1.4.1), the driving gear (4.1.1) and the coaxial gear (4.1.2) are coaxial and fixedly arranged, the power assembly (4.2) is used for synchronously driving multiple driving gears (4.1.1) to rotate clockwise or counterclockwise and driving the coaxial gear (4.1.2) to rotate with the driving gear (4.1.1), when the coaxial gear (4.1.2) rotates clockwise, the rest part (3.1) is driven to move towards the first position, when the coaxial gear (4.1.2) rotates counterclockwise, the rest part (3.1) is driven to move towards the second position.

2. A temporary resting platform for hoisting reinforcement cages according to claim 1, characterized in that The power assembly (4.2) includes synchronous motor (4.2.1), transmission chain (4.2.2), the synchronous motor (4.2.1) is installed on rest frame (2), and the output gear (4.2.3) is arranged on the output end thereof, the transmission chain (4.2.2) is arranged around the periphery of rest frame (2), and is in mesh connection with the output gear (4.2.3), the driving gear (4.1.1) is in mesh connection with the transmission chain (4.2.2).

3. A temporary resting platform for hoisting reinforcement cages according to claim 1, characterized in that, The support structure (5) is arranged at the middle part of the movable resting arm (3), and is used to generate a counter force to offset the vertical downward pressure on the middle part of the movable resting arm (3) when the reinforcement cage (1) applies a vertical downward pressure on the resting part (3.1) of the movable resting arm (3).

4. A temporary resting platform for hoisting reinforcement cages according to claim 3, characterised in that, The support structure (5) comprises a lower support rod (5.1) and an upper pressing block (5.2), the lower support rod (5.1) is fixedly connected to the resting frame (2) and abuts against the lower end surface of the movable resting arm (3) at the middle part, and the upper pressing block (5.2) is fixed above the abutting area of the lower support rod (5.1) and the movable resting arm (3), and the two ends of the upper pressing block (5.2) are fixedly connected to the upper end surface of the lower support rod (5.1), and the lower end surface of the middle part abuts against the upper end surface of the movable resting arm (3).

5. The temporary resting platform for hoisting reinforcement cage according to claim 1, characterized in that, The sliding mechanism (6) arranged at the two ends of the upper pressing block (5.2) is further included, the sliding mechanism (6) comprises a plurality of sliding wheels (6.1) arranged at intervals in the radial direction of the reinforcement cage (1), and the sliding surfaces of the sliding wheels (6.1) roll with the two side surfaces of the movable resting arm (3) to reduce the friction between the movable resting arm (3) and the two sides of the upper pressing block (5.2).

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