Device for lifting reinforcing bars in vertical concrete structures

Abstract

Device for lifting reinforcing bars in vertical concrete structures, characterized in that the device comprises a lifting frame (1), wherein a lifting component for lifting the reinforcing bar and a clamping component for clamping the reinforcing bar are arranged on the lifting frame (1).

Description

Technical area

[0001] The present utility model application relates to the technical field of the lifting device, in particular a device for lifting reinforcing bars in vertical concrete structures. State of the art

[0002] As the span of bridges such as cable-stayed and suspension bridges increases, the height of the pylons also varies. With these structural changes, the diameter of the rebar is increased, the number of rebars is increased, the spacing between the rebars is reduced, and positioning accuracy is improved. Therefore, the aforementioned requirements for rebar installation must be met when working at height. The speed of rebar lifting is a crucial factor for the further progress of construction.

[0003] Traditional working methods: When lifting large-format, densely packed rebar at high altitudes, each bar is either lifted individually, resulting in frequent lifting operations, long machine utilization, and low efficiency. Alternatively, it is lifted in bundles. However, due to the limited working platforms at high altitudes, large quantities cannot be stored, resulting in secondary relocation and additional work steps. Neither method is beneficial for managing construction progress or cost control.

[0004] The published patent application number CN212174220U, published on December 18, 2020, describes a rebar lifting device and a support component for rebar lifting, and relates to the technical field of the lifting device. The rebar lifting device includes first, second, and third positioning plates. The first and second positioning plates are spaced apart on the third positioning plate, and the three positioning plates together form a receiving channel for receiving rebar. The first and second positioning plates can move relative to the third positioning plate. In the rebar lifting device disclosed above, the rebar is prone to swaying during movement, thus preventing stable lifting and moving of the rebar and limiting its practical application. Contents of this utility model

[0005] The object of the present utility model is to provide a device for lifting reinforcing bars in vertical concrete structures that enables stable movement of the reinforcing bars. The present utility model places the reinforcing bar on the lifting frame using a lifting component and prevents the reinforcing bar from swaying during movement using a clamping component, thereby achieving stable movement of the reinforcing bar.

[0006] In order to solve the above-mentioned problem, the technical solution of the present utility model provides the following for solving the technical problem: A device for lifting reinforcing bars in vertical concrete structures, comprising a lifting frame, wherein a lifting component for lifting the reinforcing bar and a clamping component for clamping the reinforcing bar are provided on the lifting frame.

[0007] As a further embodiment of the present utility model, the lifting frame comprises an upper cross member, center bars and a lower cross member, wherein one end of the center bar is connected to the upper cross member, the other end of the center bar is connected to the lower cross member, the lifting component is connected to the upper cross member and the clamping component is connected to the lower cross member.

[0008] As a further embodiment of the present utility model, the lifting component comprises a hook and a lifting strap, wherein the hook is connected to the upper cross member and the lifting strap is connected to the hook.

[0009] As a further embodiment of the present utility model, threaded rods are provided on the hook, wherein the threaded rod is connected to the upper cross member and a locking nut is arranged on the threaded rod.

[0010] As a further embodiment of the present utility model, a washer is arranged between the locking nut and the upper cross member.

[0011] As a further embodiment of the present utility model, the clamping component comprises springs and contact blocks, wherein through grooves are provided on the lower cross member, the springs are connected to the groove wall of the through groove and the springs are connected to the contact block.

[0012] As a further embodiment of the present utility model, the upper cross member is designed as a double-T beam, and the center bar and the lower cross member are designed as U-profile steel.

[0013] As a further embodiment of the present utility model, lifting rings are provided on the lifting frame.

[0014] The advantageous effects of the present utility model are: The rebar is connected to the lifting frame via the lifting component and the clamping component. Moving the lifting frame moves the rebar on the lifting frame. Under the action of the lifting component and the clamping component, swaying of the rebar during transport is largely prevented. This ensures a stable and even lifting process of the rebar, increasing its practicality. Furthermore, the entire device is capable of lifting multiple rebars simultaneously, enabling precise positioning and installation in a single lifting operation, thus optimizing working time for reinforcement work at height.

[0015] The rebar is conveniently connected to the lifting frame via the hooks and lifting straps on the upper crossbeam, while the rebar is easily clamped by the spring and contact block in the through-grooves of the lower crossbeam to prevent the rebar from swaying in the through-groove. The hook is connected to the upper crossbeam via a threaded rod, with a locking nut mounted on the threaded rod to prevent the hook from falling off during movement, thus ensuring the safe movement of the rebar. Brief description of the characters Fig. 1 shows a schematic structural view of the device for lifting reinforcing bars in vertical concrete structures according to the present utility model. Fig. Figure 2 shows a schematic connection view of the upper cross member, the hook, the locking nut and the washer according to Fig. 1. Fig. 3 shows the top view of Fig. 1. Fig. 4 shows the bottom view of Fig. 1. Fig. 5 shows an enlarged partial view of Fig. 4.

[0016] In the drawings: 1 - lifting frame, 101 - upper cross member, 102 - central rod, 103 - lower cross member, 2 - lifting ring, 3 - hook, 4 - lifting strap, 5 - threaded rod, 6 - locking nut, 7 - washer, 8 - spring, 9 - contact block, 10 - through groove. Detailed embodiments

[0017] To make the problem, the technical solutions, and the advantages of the present utility model clearer and more understandable, the utility model is explained in more detail below with reference to the attached drawings and exemplary embodiments. It should be understood that the specific exemplary embodiments described here serve only to illustrate the present utility model and do not limit it.

[0018] The concrete implementation of the present utility model is described in detail below using specific examples.

[0019] As in Fig. As shown in Figure 1, the device for lifting reinforcing bars in vertical concrete structures comprises a lifting frame 1 on which a lifting component for lifting the reinforcing bar is arranged. A clamping component for clamping the reinforcing bar is also provided on the lifting frame 1. In particular, the lifting component and the clamping component perform lifting and clamping operations, respectively, at the two ends of the reinforcing bar.

[0020] During use, one end of the rebar is connected to the lifting component of the lifting frame 1, while the other end is held by the clamping component. This allows the lifting frame 1 to move, causing the rebar on it to move with it. The interaction of the lifting component and the clamping component prevents the rebar from swaying slightly during transport, ensuring smooth and stable lifting and moving of the rebar. This significantly increases its practicality.

[0021] Referring to the Fig. 1-5, the lifting frame 1 comprises an upper cross member 101, two center bars 102 and a lower cross member 103. One end of each center bar 102 is connected to the upper cross member 101, the other end to the lower cross member 103. The lifting component is connected to the upper cross member 101, the clamping component to the lower cross member 103. One end of the reinforcing bar is connected to the lifting component on the upper cross member 101, the other end to the clamping component on the lower cross member 103. The lifting frame 1 is designed as a rectangular frame, with the upper cross member 101 being welded to the center bars 102 and the center bars 102 being welded to the lower cross member 103.

[0022] The lifting component comprises a hook 3 and a lifting strap 4, wherein the hook 3 is connected to the upper cross member 101 and the lifting strap 4 is connected to the hook 3. One end of the lifting strap 4 is connected to the hook 3, the other end is wrapped around the reinforcing bar, ensuring easy assembly and disassembly of the reinforcing bar.

[0023] Referring to Fig.2, threaded rods 5 are provided on the hook 3, which are connected to the upper cross member 101. The threaded rod 5 enables easy assembly and disassembly of the hook 3 on the upper cross member 101. In this exemplary embodiment, sixteen threaded rods 5 are provided on the upper cross member 101. A locking nut 6 is attached to the threaded rod 5. The arrangement of the locking nut 6 prevents the threaded rod 5 from falling off the upper cross member 101, thereby ensuring safe transport of the reinforcing bar. In this exemplary embodiment, two locking nuts 6 are provided, and an elongated hole for moving the threaded rod 5 is provided on the upper cross member 101.

[0024] A washer 7 is arranged between the locking nut 6 and the upper cross member 101, which protects the upper cross member 101 and prevents the locking nut 6 from compressing the upper cross member 101 or damaging its surface when turning.

[0025] The clamping component comprises springs 8 and contact blocks 9. A through-groove 10 is provided on the lower cross member 103. The spring 8 is connected to the groove wall of the through-groove 10 and coupled to the contact block 9. One end of the reinforcing bar is guided through the through-groove 10, so that the contact block 9 clamps the reinforcing bar in the through-groove 10 under the action of the spring 8, thus preventing the reinforcing bar from swaying during movement. In this embodiment, sixteen through-grooves 10 are provided, with two springs 8 arranged symmetrically in each through-groove 10, so that the contact blocks 9 on the two springs 8 securely clamp the end of the reinforcing bar.

[0026] In particular, the upper cross member 101 is designed as a double T-beam, the center bar 102 and the lower cross member 103 are designed as U-profile steel.

[0027] Lifting rings 2 are attached to the lifting frame 1, facilitating the movement of the entire lifting frame 1 and the reinforcement bar. In this embodiment, two lifting rings 2 are provided, which are welded to the upper cross member 101.

[0028] The specific steps for use are as follows: (1) The entire lifting frame 1 is placed flat on the ground; (2) The end of a single reinforcement bar is tied manually with the lifting strap 4; (3) The rear end of a single reinforcing bar is manually inserted into the through groove 10 and fixed by the spring 8 and the contact block 9; (4) After positioning the reinforcement bar, the device is hooked onto the lifting ring 2 and transported to the assembly work area; (5) The lifting strap 4 is removed manually and the reinforcement bar is installed directly in the through groove 10.

[0029] The above statements represent merely preferred embodiments of the present utility model and are not intended to limit the invention. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present utility model are to be included within the scope of protection of the present utility model. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 212174220U

[0004]

Claims

[1] Device for lifting reinforcing bars in vertical concrete structures, characterized by that the device comprises a lifting frame (1), wherein a lifting component for lifting the reinforcing bar and a clamping component for clamping the reinforcing bar are arranged on the lifting frame (1). [2] Device for lifting reinforcing bars in vertical concrete structures according to claim 1, characterized by that the lifting frame (1) comprises an upper cross member (101), center bars (102) and a lower cross member (103), wherein one end of the center bar (102) is connected to the upper cross member (101), the other end of the center bar (102) is connected to the lower cross member (103), the lifting component is connected to the upper cross member (101) and the clamping component is connected to the lower cross member (103). [3] Device for lifting reinforcing bars in vertical concrete structures according to claim 2, characterized bythat the lifting component comprises a hook (3) and a lifting strap (4), wherein the hook (3) is connected to the upper cross member (101) and the lifting strap (4) is connected to the hook (3). [4] Device for lifting reinforcing bars in vertical concrete structures according to claim 3, characterized by that threaded rods (5) are provided on the hook (3), wherein the threaded rod (5) is connected to the upper cross member (101) and a locking nut (6) is arranged on the threaded rod (5). [5] Device for lifting reinforcing bars in vertical concrete structures according to claim 4, characterized by that a washer (7) is arranged between the locking nut (6) and the upper cross member (101). [6] Device for lifting reinforcing bars in vertical concrete structures according to one of claims 2 to 5, characterized bythat the clamping component comprises springs (8) and contact blocks (9), wherein through grooves (10) are provided on the lower cross member (103), the springs (8) are connected to the groove wall of the through groove (10) and the springs (8) are connected to the contact block (9). [7] Device for lifting reinforcing bars in vertical concrete structures according to claim 6, characterized by that the upper cross member (101) is designed as a double T-beam and the central bar (102) and the lower cross member (103) are designed as U-profile steel. [8] Device for lifting reinforcing bars in vertical concrete structures according to claim 7, characterized by that lifting rings (2) are provided on the lifting frame (1).

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