Working platform for inner wall of spherical tank

Abstract

The utility model discloses an operation platform for the inner wall of a spherical tank, relates to the technical field of spherical tank operation, and aims to solve the problem that the use range is limited due to the fact that a detection pipeline in the spherical tank cannot be avoided in the prior art. The rotary frame comprises a rotary disc, balls are arranged between the rotary disc and the track, the rotary disc and the track are rotationally connected through the balls, a telescopic platform is arranged on the rotary disc, supporting frames are symmetrically arranged on the front side and the rear side of the rotary disc, and steel cables are arranged between the supporting frames and the ends of the telescopic platform. The stand column module is a square frame composed of the sliding stand columns and the supporting beams and used for opening the middle portion, the occupied space is reduced, and therefore pipelines such as a liquid level detection pipe and a temperature detection pipe are avoided to the middle portion of the stand column guide frame.

Description

Technical Field

[0001] The utility model relates to the technical field of spherical tank operations, in particular to a spherical tank inner wall operation platform. Background Art

[0002] Spherical tanks are large-capacity, pressure-bearing spherical storage containers, widely used in petroleum, chemical, metallurgy and other sectors. They can be used as storage containers for liquefied petroleum gas, liquefied natural gas, and other media, and can also be used as storage tanks for compressed gas. Compared with vertical cylindrical storage tanks, spherical tanks have the smallest surface area under the same volume and the same pressure, so the required steel area is small. Under the same diameter, the stress in the spherical tank wall is the smallest and uniform, and its bearing capacity is 1 times greater than that of cylindrical containers. Therefore, the plate thickness of the spherical tank only needs half the thickness of the wall plate of the corresponding cylindrical container. In order to facilitate observation of the situation inside the tank, the existing spherical tanks will be equipped with multiple detection tubes such as a level detection tube and a temperature detection tube that go straight from the top of the tank to the bottom of the tank. Figure 1 shown.

[0003] Chinese patent CN201821475259.1 discloses a large spherical tank internal inspection platform, with a fixed shaft in the middle of the spherical tank, a rotating sleeve rotatably connected on the fixed shaft, and cabins symmetrically arranged at both ends of the rotating sleeve. The cabin can rotate, rise or fall around the center of the spherical tank inside the spherical tank, so as to detect the inside of the spherical tank. The prior art also has the following shortcomings: since the platform rotates around the fixed shaft, it is impossible to avoid the detection pipeline in the spherical tank, so that the scope of use is limited. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a working platform for the inner wall of a spherical tank, which can effectively solve the problems in the background technology.

[0005] The spherical tank inner wall working platform is provided with a column guide frame, the upper and lower ends of the column guide frame are provided with fixing devices, which are respectively supported on the top and bottom of the spherical tank, the column guide frame is a frame composed of sliding columns and support beams, the column guide frame is slidably connected to the sliding frame, the inner side of the sliding frame is rotatably connected to the guide wheel, the guide wheel is tangent to the sliding column, a lifting mechanism is symmetrically arranged on the outer side of the sliding frame, the outer side of the sliding frame is fixedly connected to the track, the track is rotatably connected to the revolving frame, the revolving frame comprises a turntable, a ball is arranged between the turntable and the track, the turntable and the track are rotatably connected through the ball, the telescopic platforms are symmetrically arranged on the left and right sides of the turntable, the support frames are symmetrically arranged on the front and rear sides of the turntable, a steel cable is arranged between the support frame and the end of the telescopic platform, and the column guide frame above the telescopic platform is fixedly connected to the fixed platform.

[0006] As a preferred technical solution of the utility model, the column guide frame is composed of multiple column modules spliced ​​end to end, and the column module is a square frame composed of the sliding column and the support beam, which is used to leave the middle part open to reduce the occupied space, so that pipes such as liquid level detection tubes and temperature detection tubes can be avoided to the middle part of the column guide frame.

[0007] As a preferred technical solution of the utility model, the guide wheel includes a first guide wheel and a second guide wheel, the first guide wheel and the second guide wheel are rotatably connected to the sliding frame corresponding to the position of the sliding column, the first guide wheel and the second guide wheel are arranged up and down, and there is a 90-degree angle between the first guide wheel and the second guide wheel, the first guide wheel and the second guide wheel are slidably connected to the sliding column for guiding, and at the same time, leave an avoidance space in the middle of the sliding frame.

[0008] As a preferred technical solution of the utility model, the lifting mechanism includes a hoist, a movable pulley, a fixed pulley and a fixed point, the hoist is fixed to the outside of the sliding frame, the sliding frame above the hoist is rotatably connected to the movable pulley, the fixed pulley is rotatably connected to both sides of the fixed platform, and a fixed point is provided on the fixed platform on the right side of the fixed pulley, the output shaft of the hoist is wrapped with a steel wire rope, one end of the steel wire rope is fixed to the fixed point after passing through the fixed pulley and the movable pulley, and the sliding frame is controlled to move up and down through the forward and reverse rotation of the hoist.

[0009] As a preferred technical solution of the utility model, rolling grooves are provided on the opposite surfaces of the turntable and the track, the balls are located in the rolling grooves and roll, the turntable is rotatably connected to an anti-roll wheel, a plurality of anti-roll wheels are provided, and an annular array is arranged on the turntable, the balls enable the turntable to have position limiting and reduce friction when rotating on the track, and the anti-roll wheel is used for position limiting.

[0010] As a preferred technical solution of the utility model, the telescopic platform includes a fixed frame and a movable frame, one end of the fixed frame is fixed to the turntable, and the other end is connected to the support frame through the steel cable, the bottom of the movable frame is rotatably connected to the roller, and the movable frame is slidably connected to the fixed frame through the roller, so that the telescopic platform can meet the diameter of the spherical tank at any position.

[0011] Compared with the prior art, the beneficial effect of the utility model is as follows: the utility model uses the column module to form a square frame composed of the sliding column and the support beam, which is used to leave the middle part open to reduce the occupied space, so that pipelines such as the liquid level detection tube and the temperature detection tube are avoided to the middle part of the column guide frame, and the first guide wheel and the second guide wheel are rotatably connected to the sliding frame corresponding to the position of the sliding column, and there is a 90-degree angle between the first guide wheel and the second guide wheel. The sliding column is slidably connected between the first guide wheel and the second guide wheel for guidance, while leaving an avoidance space in the middle of the sliding frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the internal structure of a spherical tank in the prior art;

[0013] Figure 2 This is the front view of the structure of the utility model;

[0014] Figure 3 This is the right side view of the structure of the utility model;

[0015] Figure 4 It is an enlarged view of point B of the utility model;

[0016] Figure 5 This is a schematic diagram of the rotary frame structure of the utility model Figure 1 ;

[0017] Figure 6 This is an enlarged view of point A of the utility model;

[0018] Figure 7 This is a schematic diagram of the rotary frame structure of the utility model Figure 2 ;

[0019] Figure 8 This is a schematic diagram of the structure of the column guide frame of the utility model;

[0020] Fig. 9 This is a schematic diagram of the turntable structure of the utility model;

[0021] Fig.10 This is a schematic diagram of the anti-tilt wheel structure of the utility model;

[0022] Fig.11 This is a schematic diagram of the guide wheel structure of the utility model Figure 1 ;

[0023] Fig.12 This is a schematic diagram of the guide wheel structure of the utility model Figure 2 ;

[0024] Fig.13 This is a schematic diagram of the telescopic platform structure of the utility model.

[0025] In the figure: 1. spherical tank; 101. liquid level detection tube; 102. temperature detection tube; 2. column guide frame; 201. column module; 202. sliding column; 203. support beam; 204. fixing device; 3. rotating frame; 301. turntable; 302. ball bearing; 303. anti-tilt wheel; 304. support frame; 4. telescopic platform; 401. steel cable; 402. fixed frame; 403. movable frame; 404. roller; 5. escalator; 6. sliding frame; 601. first guide wheel; 602. second guide wheel; 603. support block; 604. track; 605. hoist; 606. movable pulley; 7. fixed platform; 701. fixed pulley; 702. fixed point; 8. steel wire rope. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example 1

[0027] like Figures 1 to 13 As shown, the utility model discloses a working platform for the inner wall of a spherical tank, and the technical solution adopted is that it includes a column guide frame 2, and the column guide frame 2 is formed by splicing a plurality of column modules 201 end to end. The column guide frame 2 has fixing devices 204 at the upper and lower ends, and the fixing devices 204 are used to support the column guide frame 2 inside the spherical tank 1. Figure 2 As shown, the column module 201 is a square frame composed of sliding columns 202 and support beams 203. Figure 8 As shown, it is used to avoid the liquid level detection tube 101 and the temperature detection tube 102 inside the spherical tank 1. The column guide frame 2 is slidably connected to the sliding frame 6. The sliding frame 6 is a square frame slightly larger than the column guide frame 2. The upper and lower ends of the inner sides of the four sides of the sliding frame 6 are rotatably connected to guide wheels. The guide wheels include a first guide wheel 601 and a second guide wheel 602. The first guide wheel 601 is located above the second guide wheel 602. The first guide wheel 601 and the second guide wheel 602 directly have an angle of 90 degrees. The sliding column 202 slides between the first guide wheel 601 and the second guide wheel 602 as shown in FIG. Fig.12As shown, the sliding frame 6 cannot be separated from the sliding column 202 when sliding, a support block 603 is provided on the outer side of the sliding frame 6 above the guide wheel, a track 604 is provided above the support block 603, and the track 604 is rotatably connected to the rotating frame 3, and the rotating frame 3 includes a turntable 301, and the turntable 301 is provided on the track 604. Rolling grooves are provided on the opposite surfaces of the track 604 and the turntable 301, and a plurality of balls 302 roll in the rolling grooves. The turntable 301 is rotatably connected to the track 604 through the balls 302. Fig. 9 As shown, the rotating disk 301 is provided with a plurality of anti-tilt wheels 303 as shown in FIG. Fig.10 As shown, the anti-tilt wheel 303 limits the turntable 301 and the track 604 to each other to prevent tilting or deviation, support frames 304 are symmetrically arranged on the front and rear sides of the turntable 301, and telescopic platforms 4 are symmetrically arranged on the left and right sides of the turntable 301. The telescopic platform 4 includes a fixed frame 402 and a movable frame 403. One end of the fixed frame 402 is fixed to the turntable 301, and the other end of the fixed frame 402 is connected to the support frame 304 through a steel cable 401. A plurality of rollers 404 are rotatably connected to the bottom of the movable frame 403 on both sides, and the movable frame 403 is slidably connected to the fixed frame 402 through the rollers 404. The column guide frame 2 above the rotating frame 3 is fixedly connected to the fixed frame 402. Platform 7, lifting mechanisms are symmetrically arranged on both sides of the fixed platform 7, the lifting mechanisms include a hoist 605, a movable pulley 606, a fixed pulley 701 and a fixed point 702, the fixed platform 7 is rotatably connected to the fixed pulley 701, a fixed point 702 is arranged on the fixed platform 7 on the right side of the fixed pulley 701, the hoist 605 is arranged on the sliding frame 6 at the corresponding position of the fixed pulley 701, a steel wire rope 8 is wound around the output shaft of the hoist 605, the movable pulley 606 is rotatably connected on the sliding frame 6 above the hoist 605, the steel wire rope 8 extends from the hoist 605, passes through the fixed pulley 701 and the movable pulley 606, and then is fixed to the fixed point 702 as shown in FIG. Figure 4 shown.

[0028] The working principle of the utility model is as follows: when installing the column guide frame 2 inside the spherical tank 1, the size of the column guide frame 2 is controlled, and the pipelines such as the liquid level detection tube 101 and the temperature detection tube 102 inside the spherical tank 1 are avoided to the inside of the column guide frame 2. The workers enter the fixed platform 7 through the escalator 5 at the entrance of the spherical tank 1, and the telescopic platform 4 is controlled to move upward by controlling the rotation of the hoist 605, so that the telescopic platform 4 moves to the same plane as the fixed platform 7. The workers move from the fixed platform 7 to the telescopic platform 4, and the workers can reach any height of the spherical tank 1 by the up and down movement of the sliding frame 6, and can reach any angle of the spherical tank 1 by the rotation of the rotating frame 3, and can reach the edge of the spherical tank 1 with any diameter by the telescopic platform 4.

[0029] The circuits and mechanical connections involved in the present utility model are conventional means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belong to common knowledge.

[0030] Components not described in detail herein are prior art.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A working platform for the inner wall of a spherical tank, characterized by: The invention comprises a column guide frame (2), wherein the upper and lower ends of the column guide frame (2) are provided with fixing devices (204), which are supported on the top and bottom of the spherical tank (1) respectively; the column guide frame (2) is a frame composed of a sliding column (202) and a support beam (203); the column guide frame (2) is slidably connected to a sliding frame (6); the inner side of the sliding frame (6) is rotatably connected to a guide wheel; the guide wheel is tangent to the sliding column (202); a lifting mechanism is symmetrically arranged on the outer side of the sliding frame (6); the outer side of the sliding frame (6) is fixedly connected to a track (604); the track (604) is rotatably connected to a revolving frame ( 3), the rotating frame (3) comprises a rotating disk (301), a ball bearing (302) is arranged between the rotating disk (301) and the track (604), the rotating disk (301) and the track (604) are rotatably connected via the ball bearing (302), telescopic platforms (4) are symmetrically arranged on the left and right sides of the rotating disk (301), support frames (304) are symmetrically arranged on the front and rear sides of the rotating disk (301), a steel cable (401) is arranged between the support frame (304) and the end of the telescopic platform (4), and a fixed platform (7) is fixedly connected to the column guide frame (2) above the telescopic platform (4).

2. The working platform for the inner wall of a spherical tank according to claim 1, characterized in that: The column guide frame (2) is composed of a plurality of column modules (201) spliced ​​end to end, and the column module (201) is a square frame composed of the sliding column (202) and the support beam (203).

3. The working platform for the inner wall of a spherical tank according to claim 2 is characterized in that: The guide wheel comprises a first guide wheel (601) and a second guide wheel (602); the first guide wheel (601) and the second guide wheel (602) are rotatably connected to the sliding frame (6) corresponding to the position of the sliding column (202); the first guide wheel (601) and the second guide wheel (602) are arranged up and down, and there is an angle of 90 degrees between the first guide wheel (601) and the second guide wheel (602); the first guide wheel (601) and the second guide wheel (602) are slidably connected to the sliding column (202).

4. The working platform for the inner wall of a spherical tank according to claim 3 is characterized in that: The lifting mechanism comprises a hoist (605), a movable pulley (606), a fixed pulley (701) and a fixed point (702); the hoist (605) is fixed to the outside of the sliding frame (6); the sliding frame (6) above the hoist (605) is rotatably connected to the movable pulley (606); the fixed pulley (701) is rotatably connected to both sides of the fixed platform (7); a fixed point (702) is provided on the fixed platform (7) on the right side of the fixed pulley (701); a steel wire rope (8) is wound around the output shaft of the hoist (605); one end of the steel wire rope (8) passes through the fixed pulley (701) and the movable pulley (606) and is then fixed to the fixed point (702).

5. The working platform for the inner wall of a spherical tank according to claim 1 is characterized in that: Rolling grooves are provided on the opposite surfaces of the turntable (301) and the track (604), the balls (302) are located in the rolling grooves and roll, and the turntable (301) is rotatably connected to an anti-tilt wheel (303), wherein a plurality of anti-tilt wheels (303) are provided and arranged in a circular array on the turntable (301).

6. The working platform for the inner wall of a spherical tank according to claim 1 is characterized in that: The telescopic platform (4) comprises a fixed frame (402) and a movable frame (403); one end of the fixed frame (402) is fixed to the turntable (301), and the other end is connected to the support frame (304) via the steel cable (401); the bottom of the movable frame (403) is rotatably connected to a roller (404), and the movable frame (403) is slidably connected to the fixed frame (402) via the roller (404).

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