Special lifting appliance for lifting metro prefabricated part

Abstract

The utility model relates to the technical field of cranes, in particular to a special lifting appliance for lifting metro prefabricated parts, which comprises a lifting frame arranged on a crane body, a hanging frame used for hanging the prefabricated parts is arranged at the lower part of the lifting frame, a plurality of mounting holes are arranged at the lower part of the hanging frame, lifting devices are arranged in the mounting holes, and the lifting devices are arranged on the lifting frame. The lower portion of the lifting device is provided with a hook used for being connected with a prefabricated part, the flexibility of lifting operation is improved, manual intervention can be reduced to a certain degree, the labor intensity is lowered, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a special hoisting device for hoisting subway prefabricated parts. Background Art

[0002] During the excavation of subway tunnels, precast concrete parts are used for lining or supporting operations. Generally, cranes are used to lift these precast parts. However, with the increase in urban subway lines, there will inevitably be intersections and transfer stations on the subway lines. Transfer stations are usually the intersection of two or even three lines. Sufficient safe operating distance must be reserved between each line. Therefore, the distribution of subway lines is not straight. Therefore, when using cranes, the angle of the precast parts needs to be changed during the lifting process in order to successfully lift the precast parts into place.

[0003] Most existing cranes use hoists to directly hoist prefabricated parts during hoisting. The prefabricated parts need to be hoisted according to the construction slope of the subway construction site. However, the existing prefabricated parts are hoisted with an inclined position by presetting the length of the steel cable. However, the accuracy is not high during the operation and it cannot be adjusted according to the on-site conditions. There are many limitations in use and the adjustment is inconvenient. Therefore, this technical solution is proposed for improvement. Utility Model Content

[0004] The utility model aims to overcome the shortcoming in the prior art that the angle of prefabricated parts cannot be adjusted according to the on-site conditions during the construction of subways, and provides a special hoisting device for hoisting subway prefabricated parts.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model specifically adopts the following technical scheme: a special hoisting device for subway prefabricated parts, including a hoisting frame arranged on a crane body, a hanging bracket for hanging prefabricated parts is arranged at the lower part of the hoisting frame, a plurality of mounting holes are arranged at the lower part of the hanging bracket, a lifting device is arranged inside the mounting holes, and a hook for connecting the prefabricated parts is arranged at the lower part of the lifting device.

[0006] Furthermore, the lifting device is one or a combination of a hydraulic cylinder, a pneumatic cylinder or an electric push rod.

[0007] Furthermore, a support frame connected to the crane body is provided on the upper part of the pylon, and the support frame is rotatably connected to the pylon.

[0008] Furthermore, both ends of the support frame are provided with lifting rings connected to the lifting hooks of the crane body.

[0009] Furthermore, a connecting pipe is provided at a middle position of the hanging bracket, a mounting seat is provided at a middle position of the supporting frame, and the connecting pipe is sleeved with the mounting seat.

[0010] Furthermore, a gear ring is provided on the upper portion of the mounting seat, a fixing plate is provided on the top of the connecting pipe, a driving motor is provided on the side of the fixing plate, and a driving wheel connected to the gear ring is provided at the output end of the driving motor.

[0011] The beneficial effects of the embodiments of the utility model are as follows: the connection between the connecting pipe and the mounting seat is achieved by means of a socket connection, and at the same time, the connecting pipe can rotate freely in the mounting seat, and the operation of the driving motor can drive the gear ring and the connecting pipe to rotate together, thereby realizing accurate control of the rotation angle of the hanger, and by controlling the telescopic amount of the lifting device, the precise adjustment of the hook height can be realized, and the lifting device can adjust the height of the hook according to actual needs, thereby realizing accurate control of the lifting angle of the prefabricated parts, which not only improves the flexibility of the lifting operation, but also can reduce manual intervention to a certain extent, reduce labor intensity and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0014] Figure 3 It is a cross-sectional structural schematic diagram of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the utility model in use state;

[0016] In the figure: 1. lifting frame; 2. supporting frame; 201. lifting ring; 202. gear ring; 3. hanging frame; 301. lifting device; 302. hook; 303. connecting pipe; 304. fixing plate; 305. driving motor; 306. slewing bearing. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0018] See also Figures 1 to 4The utility model embodiment discloses a special hoisting device for lifting subway prefabricated parts, which mainly includes a hoisting frame 1 connected to a crane body. The crane body serves as a power source and a control platform, and is responsible for providing the power and control instructions required for hoisting. The hoisting frame 1 is used to ensure that the entire hoisting frame 1 can be stably suspended under the crane. The hoisting frame 1 includes a support frame 2 arranged at the upper part, and a lifting ring 201 is respectively arranged at both ends of the support frame 2 to be connected to the hook of the crane body. The support frame 2 is made of high-strength steel to ensure sufficient bearing capacity and stability. The lifting ring 201 is connected by two detachable connecting rods, and the hook is a T-hook. The two connecting rods on the lifting ring 201 stably connect the hook to ensure stability during use.

[0019] A hanger 3 for mounting prefabricated parts is provided at the lower part of the support frame 2. The hanger 3 is rotatably connected to the support frame 2 through a connecting device. The connecting device allows the hanger 3 to rotate freely within a certain range relative to the support frame 2, so as to meet the hoisting requirements at different angles, especially under complex terrain conditions such as subway transfer stations, which can significantly improve the flexibility and efficiency of hoisting operations. The connecting device mainly includes a connecting pipe 303 and a mounting seat. The connecting pipe 303 is fixedly arranged in the middle position of the hanger 3, and the mounting seat is firmly welded to the middle position of the support frame 2. The connecting pipe 303 and the mounting seat are connected by a socket connection. At the same time, the connecting pipe 303 can rotate freely in the mounting seat. A gear ring 202 is provided on the upper part of the mounting seat, and the gear ring 202 is fixedly connected to the support frame 2 to ensure that it will not be displaced during the rotation process and provide a fulcrum for the rotation of the hanger 3. A fixing plate 304 is fixed to the top of the connecting pipe 303, and a driving motor 305 is installed on the side of the fixing plate 304. A driving wheel is provided at the output end of the driving motor 305, and the driving wheel is tightly meshed with the gear ring 202. Through the operation of the driving motor 305, the gear ring 202 and the connecting pipe 303 can be driven to rotate together, thereby realizing accurate control of the rotation angle of the hanger 3. In order to reduce the friction resistance during the rotation process and improve the smoothness and stability of the rotation, a slewing bearing 306 is also sleeved on the outer wall of the connecting pipe 303, and the slewing bearing 306 is tightly fitted with the inner wall of the mounting seat, which effectively reduces the friction and wear during the rotation process.

[0020] The hanger 3 is provided with a plurality of hooks 302 for connecting the prefabricated parts. The number and position of the hooks 302 are customized according to the shape and size of the prefabricated parts to ensure that the prefabricated parts can be firmly mounted. The hooks 302 are connected to the lifting device 301 arranged on the hanger 3. The specific structure of the lifting device 301 can adopt common lifting mechanisms such as hydraulic cylinders, air cylinders or electric push rods. By controlling the telescopic amount of the lifting device 301, the height of the hook 302 can be accurately adjusted. The lifting device 301 can adjust the height of the hook 302 according to the actual needs of the site, thereby realizing accurate control of the lifting angle of the prefabricated parts, so that the prefabricated parts can be tilted to a set angle during the lifting process, and can be manually adjusted, which not only improves the flexibility of the lifting operation, but also can reduce manual intervention to a certain extent, reduce labor intensity and improve work efficiency, realize accurate control of the lifting angle and height of the subway prefabricated parts, and effectively improve the efficiency and safety of the lifting operation, especially when encountering complex and narrow terrain conditions in subway construction, which can significantly improve the progress speed of the project and reduce the consumption of manpower and material resources.

[0021] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0024] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A special hoist for lifting subway prefabricated parts, characterized by: The invention comprises a hanging frame (1) arranged on a crane body, wherein a hanging frame (3) for hanging prefabricated parts is arranged at the lower part of the hanging frame (1), a plurality of mounting holes are arranged at the lower part of the hanging frame (3), a lifting device is arranged inside the mounting holes, and a hook for connecting the prefabricated parts is arranged at the lower part of the lifting device.

2. The special lifting device for lifting subway prefabricated parts according to claim 1 is characterized by: The lifting device is one of a hydraulic cylinder, a gas cylinder or an electric push rod or a combination thereof.

3. The special lifting device for lifting subway prefabricated parts according to claim 1 is characterized in that: A support frame (2) connected to the crane body is provided on the upper part of the hanging frame (3), and the support frame (2) is rotatably connected to the hanging frame (3).

4. The special lifting device for lifting subway prefabricated parts according to claim 3 is characterized in that: Both ends of the support frame (2) are provided with lifting rings (201) connected to the lifting hooks of the crane body (4).

5. The special lifting device for lifting subway prefabricated parts according to claim 3 is characterized by: A connecting pipe (303) is provided at the middle position of the hanging rack (3), a mounting seat is provided at the middle position of the supporting frame (2), and the connecting pipe (303) is sleeved with the mounting seat.

6. The special lifting device for lifting subway prefabricated parts according to claim 5 is characterized in that: A gear ring (202) is arranged on the upper part of the mounting seat, a fixing plate (304) is arranged on the top of the connecting pipe (303), a driving motor (305) is arranged on the side of the fixing plate (304), and a driving wheel is arranged at the output end of the driving motor (305) and connected to the gear ring (202).

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