CN221500558U - A lifting device for opening a manhole cover - Google Patents

Abstract

The utility model discloses a lifting device for opening a manhole cover, comprising a lifting frame, on which a pulley block is arranged; the pulley block comprises a fixed pulley fixedly mounted on the lifting frame and a movable pulley capable of lifting and lowering, the movable pulley is provided with a plurality of steel chains, and hooks are arranged at the ends of the steel chains; the lifting frame comprises a plurality of lifting columns and steel pipes, the lifting columns are in a vertical state, and the plurality of lifting columns are fixedly installed through a plurality of steel pipes. The beneficial effect is that the lifting device is connected with the old manhole cover to be replaced through a plurality of hooks, and by pulling the pulley block, the movable pulley drives the hook and the old manhole cover to move upward until the old manhole cover is separated from the wellhead, and at the same time, the height of the lifting frame can be adjusted, and the height of the old manhole cover can be further adjusted so as to replace the manhole cover, and by using the lifting device, the construction process of replacing the manhole cover can be standardized, the labor cost can be reduced, the construction efficiency can be improved, and the construction safety risk can be reduced.

Description

A lifting device for opening a manhole cover

Technical Field

The utility model belongs to the technical field of municipal construction, and in particular relates to a hanging device for opening a manhole cover.

Background Art

The existing replacement of old manhole covers or maintenance of underground pipelines is mainly carried out by workers using crowbars to open the manhole covers, which is often limited by the workers' strength and quality conditions, and it is impossible to effectively carry out standardized operations with the cooperation of multiple people. As a result, the time for opening the manhole covers is greatly increased, and some larger manhole covers cannot be opened. At the same time, it is also easy to cause bumps, damages and other accidents during the construction process, which greatly affects the construction efficiency and economic benefits.

Summary of the invention

In order to solve the above problems, the purpose of the present utility model is to provide a lifting device for opening a manhole cover, as described below.

In order to achieve the above purpose, the utility model provides the following technical solutions:

The utility model provides a lifting device for opening a manhole cover, comprising a lifting frame, on which a pulley block is arranged;

The pulley block comprises a fixed pulley fixedly mounted on the lifting frame and a movable pulley capable of being raised and lowered, wherein a plurality of steel chains are arranged on the movable pulley, and hook claws are arranged at the ends of the steel chains;

The lifting frame comprises a plurality of lifting columns and steel pipes, the lifting columns are in a vertical state, and the plurality of lifting columns are fixedly installed through a plurality of steel pipes.

By using the above-mentioned lifting device for opening a manhole cover, the lifting frame can be assembled on site, and the assembled lifting frame is placed directly above the manhole. The pulley block is then hung at the center of the lifting frame, and a number of hooks are hung on the old manhole cover that needs to be replaced. The pulley block is then pulled to make the movable pulley drive the hook and the old manhole cover to move upward through the steel chain. At the same time, the height of the lifting frame can be adjusted, and the lifting range of the pulley block can be supplemented by the lifting frame.

Preferably, there are three lifting columns and three steel pipes, and the three steel pipes are arranged in a triangle, and both ends of the steel pipe are fixed to the corresponding two lifting columns by bolts.

Preferably, the lifting column comprises a threaded barrel, the threaded barrel is fixed to the end of the steel pipe by bolts, and a stud is connected to the inner thread of the threaded barrel.

Preferably, a base is rotatably provided at the lower end of the stud, and a turntable is fixed on the surface of the stud.

Preferably, the pulley block comprises a plurality of steel ropes, the fixed pulley is fixed to the lifting frame via the plurality of steel ropes, a pull rope is fixed to the fixed pulley, and the other end of the pull rope passes through the movable pulley and the fixed pulley in sequence.

Preferably, a handle is fixed to one end of the pull rope away from the fixed pulley.

Preferably, one end of the steel rope away from the fixed pulley is fixedly mounted on the lifting column.

Preferably, the pulley block is located at the center of the lifting frame.

The beneficial effects are:

1. Connect the old manhole cover to be replaced through several hooks, and pull the pulley block to make the movable pulley drive the hook and the old manhole cover to move upward until the old manhole cover is separated from the wellhead. At the same time, the height of the lifting frame can be adjusted to further adjust the height of the old manhole cover so as to replace the manhole cover. By using the lifting device, the construction process of manhole cover replacement can be standardized, labor costs can be reduced, construction efficiency can be improved, and construction safety risks can be reduced;

2. The lifting frame adopts a split design, which makes the device easier to store and transport, reduces transportation costs, and facilitates the maintenance of various parts. The corresponding accessories can be replaced in time according to the construction environment and construction requirements to adapt to more diverse construction scenarios.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

Fig. 1 is a front view of the structure of the utility model;

FIG. 2 is a schematic diagram of the three-dimensional structure of the utility model.

The following are the descriptions of the reference numerals:

1. Lifting frame; 2. Pulley block; 3. Steel chain; 4. Hook; 5. Lifting column; 6. Steel pipe; 7. Steel rope; 8. Fixed pulley; 9. Pull rope; 10. Movable pulley; 11. Handle; 12. Threaded barrel; 13. Stud; 14. Turntable; 15. Base.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Referring to FIGS. 1 and 2 , the utility model provides a lifting device for opening a manhole cover, comprising a lifting frame 1, on which a pulley block 2 is arranged, and the lifting frame 1 is used to support the pulley block 2 and can adjust the height of the pulley block 2, thereby increasing the lifting range of a movable pulley 10 of the pulley block 2;

The pulley block 2 includes a fixed pulley 8 fixedly mounted on the lifting frame 1 and a movable pulley 10 capable of being raised and lowered. A plurality of steel chains 3 are arranged on the movable pulley 10, and hooks 4 are arranged at the ends of the steel chains 3. The hooks 4 can be hung on the lifting ring of the manhole cover. If the manhole cover does not have a lifting ring, the hooks 4 can also be stuck in the gap between the manhole cover and the wellhead.

The number of hooks 4 and steel chains 3 as well as the length of the steel chains 3 can be adjusted accordingly according to the site conditions and the size of the manhole cover;

The lifting frame 1 includes a plurality of lifting columns 5 and steel pipes 6. The lifting columns 5 are in a vertical state, and the plurality of lifting columns 5 are fixedly installed by means of a plurality of steel pipes 6.

The lifting frame 1 can be assembled and disassembled quickly, so it is convenient to transport and carry.

As an optional implementation, there are three lifting columns 5 and three steel pipes 6 , and the three steel pipes 6 are arranged in a triangle. Both ends of the steel pipes 6 are fixed to the corresponding two lifting columns 5 by bolts, which minimizes the manufacturing cost while ensuring the stability of the lifting columns 5 .

The lifting column 5 includes a threaded barrel 12 , which is fixed to the end of the steel pipe 6 by bolts. A stud 13 is connected to the inner thread of the threaded barrel 12 , and the height of the lifting frame 1 can be adjusted by rotating the stud 13 .

A base 15 is rotatably provided at the lower end of the stud 13 , and a turntable 14 is fixed on the surface of the stud 13 . The stud 13 can be rotated more easily by providing the base 15 and the turntable 14 .

The pulley block 2 includes a plurality of steel ropes 7, a fixed pulley 8 is fixed to the lifting frame 1 through the plurality of steel ropes 7, a pull rope 9 is fixed to the fixed pulley 8, the other end of the pull rope 9 passes through the movable pulley 10 and the fixed pulley 8 in sequence, and a handle 11 is fixed to the end of the pull rope 9 away from the fixed pulley 8;

By pulling the pull rope 9 through the handle 11, the movable pulley 10 can be driven to rise. Providing the handle 11 makes it easier to pull the pull rope 9 and also facilitates fixing the end of the pull rope 9. For example, after the manhole cover is lifted, the handle 11 can be stepped on the ground to make the manhole cover suspended.

One end of the steel rope 7 away from the fixed pulley 8 is fixedly mounted on the lifting column 5 .

The pulley block 2 is located at the center of the lifting frame 1, and this arrangement can ensure that the device is balanced in force.

With the above structure, the lifting frame 1 can be assembled on site. The assembled lifting frame 1 is placed directly above the manhole, and then the pulley block 2 is hung at the center of the lifting frame 1. A number of hooks 4 are hung on the old manhole cover that needs to be replaced. Then, the pulley block 2 is pulled to make the movable pulley 10 drive the hook 4 and the old manhole cover to move upward through the steel chain 3. At the same time, the height of the lifting frame 1 can be adjusted, and the lifting range of the pulley block 2 can be supplemented by the lifting frame 1.

The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims (8)

1. A lifting device for opening a manhole cover, characterized in that it comprises a lifting frame (1), and a pulley block (2) is arranged on the lifting frame (1); The pulley block (2) comprises a fixed pulley (8) fixedly mounted on the lifting frame (1) and a movable pulley (10) capable of being raised and lowered, wherein a plurality of steel chains (3) are arranged on the movable pulley (10), and hook claws (4) are arranged at the ends of the steel chains (3); The lifting frame (1) comprises a plurality of lifting columns (5) and steel pipes (6); the lifting columns (5) are in a vertical state, and the plurality of lifting columns (5) are fixedly installed via a plurality of steel pipes (6). 2. A lifting device for opening a manhole cover according to claim 1, characterized in that: there are three lifting columns (5) and three steel pipes (6), and the three steel pipes (6) are arranged in a triangle, and both ends of the steel pipe (6) are fixed to the corresponding two lifting columns (5) by bolts. 3. A lifting device for opening a manhole cover according to claim 2, characterized in that: the lifting column (5) comprises a threaded barrel (12), the threaded barrel (12) is fixed to the end of the steel pipe (6) by bolts, and the threaded barrel (12) is internally threaded with a stud (13). 4. A lifting device for opening a manhole cover according to claim 3, characterized in that a base (15) is rotatably provided at the lower end of the stud (13), and a turntable (14) is fixed on the surface of the stud (13). 5. A lifting device for opening a manhole cover according to claim 1, characterized in that: the pulley block (2) comprises a plurality of steel ropes (7), the fixed pulley (8) is fixed to the lifting frame (1) through the plurality of steel ropes (7), a pull rope (9) is fixed to the fixed pulley (8), and the other end of the pull rope (9) passes through the movable pulley (10) and the fixed pulley (8) in sequence. 6. A lifting device for opening a manhole cover according to claim 5, characterized in that a handle (11) is fixed to the end of the pull rope (9) away from the fixed pulley (8). 7. A lifting device for opening a manhole cover according to claim 5, characterized in that one end of the steel rope (7) away from the fixed pulley (8) is fixedly mounted on the lifting column (5). 8. A lifting device for opening a manhole cover according to claim 1, characterized in that the pulley block (2) is located at the center of the lifting frame (1).