Foldable hoisting device for confined spaces

Abstract

This utility model relates to a lifting tool, specifically a foldable lifting device for confined spaces. It includes a lifting bracket, a controller, and a winch. The winch comprises a motor, a roller, a traction rope, and a hook. The motor drives the roller, and the traction rope is wound around it, with one end connected to the hook. The winch is mounted on the lifting bracket, and the controller is electrically connected to the motor. The lifting bracket includes a crossbar for fixing the winch and four legs. The crossbar and legs are connected by two fixed plates. Both ends of the crossbar are fixedly connected to the fixed plates, and the legs are connected in pairs to the shafts of the two fixed plates, allowing them to be closed and folded in pairs on a 90-degree plane around the crossbar. The legs that can be closed and folded in pairs are connected by foldable support rods. The advantages of this utility model are low cost, ability to operate in confined spaces, ease of transport, and improved construction efficiency.

Description

Technical Field

[0001] This utility model relates to a hoisting tool, specifically a foldable hoisting device for confined spaces. Background Technology

[0002] During highway construction, especially when it involves the construction of viaducts, it is often necessary to lift objects from the bridge deck to the bridge. In daily construction operations, truck cranes are generally used to solve this problem. However, due to the limitations of the construction conditions and terrain, there are often situations where truck cranes cannot reach the work area. The traditional method of operation is to manually carry or use hinges to transport items, which is not only inefficient, but also prone to danger because the items to be moved are complex. Summary of the Invention

[0003] In view of the above-mentioned technical problems, this utility model provides a hoisting device that is easy to operate in confined spaces, and has high safety and work efficiency. Specifically, it is a foldable hoisting device for confined spaces, including a hoisting bracket, a controller, and a winch. The winch includes a motor, a roller, a traction rope, and a hook. The motor drives the roller, and the traction rope is wound around the roller. One end of the traction rope is connected to the hook. The winch is mounted on the hoisting bracket, and the controller is electrically connected to the motor. The hoisting bracket includes a crossbar for fixing the winch and four legs. The crossbar and the legs are connected by two fixed plates. The two ends of the crossbar are fixedly connected to the fixed plates, and the legs are connected in pairs to the shafts of the two fixed plates, so that the legs can be closed and stored in pairs on a 90-degree plane of the crossbar. The legs that can be closed and stored in pairs are connected by a foldable support rod.

[0004] As described above, its simple and compact design makes it suitable for sites with limited space where large hoisting equipment cannot access; the foldable legs allow for passage through confined spaces during transport. Furthermore, its practicality is not compromised by its low cost and compact design; like large hoisting equipment, it can significantly improve work efficiency.

[0005] Furthermore, each of the four legs has a support base at its free end.

[0006] The addition of outriggers significantly improves the stability of the entire device and makes it adaptable to most working conditions. Of course, in site-friendly environments, the outriggers can be replaced with pads, as long as holes for the outriggers to insert are pre-drilled in the pads. This can further improve stability and reduce damage to the construction surface.

[0007] Furthermore, the winch is mounted on the crossbar via bearings.

[0008] This connection method between the winch and the crossbar is to increase its stability. Other methods can also be used, such as fixing them together with mounting brackets, but when lifting heavy objects, the huge pulling force can easily cause the winch to fall off, affecting the construction progress.

[0009] Furthermore, the controller is equipped with control buttons for controlling the motor to rotate in both directions and to pause operation.

[0010] Furthermore, it also includes a protective cover, which is located on the outside of the winch and fixedly installed on the crossbar, with a channel below the protective cover for the winch traction rope to pass through.

[0011] The protective cover is added to prevent debris from entering the winch and affecting its operation, especially metal shavings, which could cause a short circuit in the motor and lead to danger.

[0012] The advantages of this utility model are: low design and use costs, strong applicability, convenient handling, and improved construction efficiency. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present invention.

[0014] Note: This diagram is for structural illustration only and does not impose any restrictions on proportions, dimensions, or shape. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings.

[0016] like Figure 1 As shown, a foldable hoisting device for confined spaces includes a hoisting bracket 1, a controller 2, and a winch 3. The winch 3 includes a motor 3-1, a roller 3-2, a traction rope 3-3, and a hook 3-4. The motor 3-1 drives the roller 3-2. The traction rope 3-3 is wound around the roller 3-2, and one end of the traction rope 3-3 is connected to the hook 3-4. The winch 3 is mounted on the hoisting bracket 1. The controller 2 is electrically connected to the motor 3-1. The hoisting bracket 1 includes a crossbar 1-1 for fixing the winch and four legs 1-2. The crossbar 1-1 and the legs 1-2 are connected by two fixed plates 1-3. The two ends of the crossbar 1-1 are fixedly connected to the fixed plates 1-3 respectively. The legs 1-2 are connected in pairs to the shafts of the two fixed plates 1-3 respectively, so that the legs can be closed and stored in pairs on a 90-degree plane of the crossbar. The legs that can be closed and stored in pairs are connected by foldable support rods 1-4.

[0017] Because of its foldable design, it is very convenient to transport and is almost unrestricted by narrow spaces; it can pass through any gap that the winch 3 can fit through. In situations where large hoisting equipment cannot access the site, only one or two people are needed to lift it to the site, unfold the four outriggers 1-2, and connect the power to begin construction. Similarly, when clearing the site after construction, simply disconnect the power connection, pry open the connecting support rods 1-4 between the outriggers, and close the outriggers in pairs for removal. Alternatively, a portable power supply can be used, or the motor 3-1 and the rollers 3-2 can be designed separately, requiring only on-site electrical connection.

[0018] To increase its stability, support feet 1-5 are respectively provided at the free ends of the four support legs. The winch 3 is mounted on the crossbar via bearings. The controller 2 is equipped with control buttons for controlling the motor to rotate forward and backward and to pause operation.

[0019] Because different equipment and materials are used for construction at the construction site, and the materials are of different materials, it is easy for material debris to be ejected during construction. Whether it is non-conductive non-conductive debris ejected into the rolling wheel 3-2 of the winch, or metallic conductive debris ejected into the motor 3-1 causing a short circuit, construction accidents will occur. Therefore, this utility model also includes a protective cover 1-6. The protective cover is set on the outside of the winch and fixedly installed on the crossbar. A channel for the winch traction rope to pass through is provided below the protective cover.

[0020] Of course, this utility model can also be replaced by other forms of components, such as: changes in the form of bracket 1, replacement of the form of protective cover 1-6, etc. Any simple means of replacement without creative labor should be included in the protection scope of this utility model.

Claims

1. A foldable hoisting device for confined spaces, comprising a hoisting bracket, a controller, and a winch, wherein the winch includes a motor, a roller, a traction rope, and a hook, the motor drives the roller, the traction rope is wound around the roller, one end of the traction rope is connected to the hook, the winch is mounted on the hoisting bracket, and the controller is electrically connected to the motor, characterized in that, The hoisting support includes a crossbar for fixing the winch and four legs. The crossbar and legs are connected by two fixed plates. The two ends of the crossbar are fixedly connected to the fixed plates respectively. The legs are connected to the shafts of the two fixed plates in pairs, so that the legs can be closed and stored in pairs on the plane of the crossbar at a 90-degree angle. The legs that can be closed and stored in pairs are connected by foldable support rods.

2. A collapsible hoisting device for use in confined spaces as claimed in claim 1 wherein, Each of the four legs has a support base at its free end.

3. A collapsible hoist arrangement for use in confined spaces according to either of claims 1 or 2, wherein, The winch is mounted on the crossbar via bearings.

4. A collapsible hoisting device for use in confined spaces as claimed in claim 3 wherein, The controller is equipped with control buttons for controlling the motor to rotate forward and backward and to pause operation.

5. A collapsible hoist for use in confined spaces as claimed in any one of claims 1, 2, 4, wherein, It also includes a protective cover, which is located on the outside of the winch and fixedly installed on the crossbar, with a channel below the protective cover for the winch traction rope to pass through.

6. A collapsible hoist device for use in confined spaces as claimed in claim 3 wherein, It also includes a protective cover, which is located on the outside of the winch and fixedly installed on the crossbar, with a channel below the protective cover for the winch traction rope to pass through.

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