Special crane for hoisting metro prefabricated part

Abstract

The utility model relates to the technical field of cranes, in particular to a special crane for hoisting metro prefabricated parts, which comprises a crane body, a hoisting frame is arranged at the output end of the crane body and comprises a support frame connected with the crane body, and a hanging frame for hanging the prefabricated parts is arranged on the lower portion of the support frame. The hanging frame is rotationally connected with the supporting frame through the connecting device, accurate control over the hoisting angle and height of the subway prefabricated part is achieved, and the efficiency and safety of hoisting operation are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a special crane 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 slings to directly hoist prefabricated parts during hoisting. The position and angle of the prefabricated parts are manually adjusted by pulling ropes during the hoisting process. Due to the large mass of the prefabricated parts, they are often not well controlled during the process of changing their positions. Therefore, a lot of time is often consumed in the hoisting process, especially in areas with small spaces. It often consumes huge manpower and material resources, affecting the progress of the project. Therefore, this technical solution is proposed for improvement. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art in which the hoisting position of prefabricated parts in the process of hoisting the subway construction is inaccurate and consumes much manpower and material resources, and provides a special crane for hoisting the 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 crane for lifting subway prefabricated parts, including a crane body, a lifting frame is arranged at the output end of the crane body, the lifting frame includes a supporting frame connected to the crane body, a hanging frame for hanging prefabricated parts is arranged at the lower part of the supporting frame, and the hanging frame is rotatably connected to the supporting frame through a connecting device.

[0006] Furthermore, both ends of the support frame are provided with lifting rings connected to the lifting hooks of the crane body, and the connecting device is arranged in the middle position of the support frame.

[0007] Furthermore, the connecting device comprises a connecting pipe arranged at a middle position of the hanging bracket, a mounting seat is arranged at a middle position of the supporting frame, and the connecting pipe is sleeved with the mounting seat.

[0008] 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 tube, 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.

[0009] Furthermore, the hanger is provided with a plurality of hooks for connecting the prefabricated parts, and the hooks are connected to a lifting device provided on the hanger.

[0010] The beneficial effects of the embodiments of the utility model are as follows: a lifting ring is provided at each end of the support frame and is connected to the lifting hook of the crane body. The support frame is made of high-strength steel to ensure sufficient load-bearing capacity and stability. The lifting ring is connected by two detachable connecting rods, and the hook is a T-hook. The two connecting rods on the lifting ring stably connect the hook to ensure stability during use. The connecting pipe and the mounting seat are connected by a sleeve connection. At the same time, the connecting pipe can rotate freely in the mounting seat. Through the operation of the driving motor, the gear ring and the connecting pipe can be driven to rotate together, thereby realizing accurate control of the rotation angle of the bracket. By controlling the telescopic amount of the lifting device, the height of the hook can be accurately adjusted. 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 part, 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

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the hanging frame of the utility model;

[0013] Figure 3 This is a schematic diagram of the top view of the structure of the hanging frame of the utility model;

[0014] Figure 4 This is a schematic diagram of the position structure of the hoisting frame of the utility model after the angle is adjusted;

[0015] Figure 5 It is a cross-sectional structural schematic diagram of the hanging frame of the utility model;

[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; 4. crane body. 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 5The utility model embodiment discloses a special crane for lifting subway prefabricated parts, which mainly includes a crane body 4 and a lifting frame 1. The crane body 4 serves as a power source and a control platform, and is responsible for providing the power and control instructions required for lifting. The lifting frame 1 is used to ensure that the entire lifting frame 1 can be stably suspended under the crane. The lifting frame 1 includes a support frame 2 arranged on the upper part, and a lifting ring 201 is respectively arranged at both ends of the support frame 2 to be connected with the hook of the crane body 4. 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 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, 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 crane for lifting subway prefabricated parts, comprising a crane body (4), characterized in that: The output end of the crane body (4) is provided with a hoisting frame (1), the hoisting frame (1) comprising a support frame (2) connected to the crane body (4), a hanging frame (3) for hanging prefabricated parts is provided at the lower part of the support frame (2), and the hanging frame (3) is rotatably connected to the support frame (2) via a connecting device.

2. The special crane for lifting subway prefabricated parts according to claim 1 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), and the connecting device is arranged in the middle of the support frame (2).

3. The special crane for lifting subway prefabricated parts according to claim 1 is characterized in that: The connecting device comprises a connecting pipe (303) arranged at a middle position of the hanging frame (3); a mounting seat is arranged at a middle position of the supporting frame (2); and the connecting pipe (303) is sleeved with the mounting seat.

4. The special crane for lifting subway prefabricated parts according to claim 3 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).

5. The special crane for lifting subway prefabricated parts according to claim 1 is characterized in that: The hanger (3) is provided with a plurality of hooks (302) for connecting prefabricated parts, and the hooks (302) are connected to a lifting device (301) provided on the hanger (3).

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