An automatic auxiliary platform for internal inspection in periodic inspection of spherical tanks

Abstract

The invention relates to the technical field of spherical tanks, and specifically to an automatic auxiliary platform for internal inspection in periodic inspection of spherical tanks, comprising an inspection hanger, which is installed in the spherical tank, a spherical top opening is arranged on the top of the spherical tank, the inside of the spherical top opening is connected with a supporting plate through a traction frame, a lap plate is arranged above the supporting plate, a servo motor 1 is arranged above the lap plate, and the shaft of the servo motor 1 is connected with a central rotating shaft through a coupling; a base is arranged at the bottom end of the central rotating shaft; the beneficial effects are as follows: the automatic auxiliary platform for internal inspection in periodic inspection of spherical tanks proposed by the invention is overlapped on the supporting plate through the lap plate to hoist the central rotating shaft into the spherical tank, a swing arm swings against the inner wall of the spherical tank, the inspection hanger is towed by a traction rope, and the swing arm is adjusted in position in coordination with the rotation of the central rotating shaft, so that maintenance personnel can stand on the inspection hanger to inspect any position inside the spherical tank.

Description

Technical Field

[0001] The invention relates to the technical field of spherical tanks, in particular to an automatic auxiliary platform for internal inspection in periodic inspection of spherical tanks. Background Art

[0002] The spherical tank is composed of a spherical tank body, a support (or pillar) and accessories. The spherical tank body is a spherical container welded together by spherical shell plates, which is the pressure-bearing part of the spherical tank. The support of the spherical tank is often a column support made of multiple steel pipes, with the equatorial tangent column being the most common.

[0003] In the prior art, spherical tanks contain relatively high-pressure gas or liquefied gas, most of which are flammable and explosive media, which are highly dangerous, difficult to install and construct, and have high quality requirements.

[0004] However, there is a lack of auxiliary platforms for regular inspection and maintenance of the interior of the spherical tank. Due to the large size of the spherical tank, it is difficult to inspect and maintain any position of the inner wall of the spherical tank, and there is a lack of auxiliary platforms for maintenance personnel to stand on. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic auxiliary platform for internal inspection during periodic inspection of spherical tanks to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: an automatic auxiliary platform for internal inspection in periodic inspection of a spherical tank, comprising an inspection hanger, the inspection hanger is installed in the spherical tank, a spherical top opening is arranged on the top of the spherical tank, a support plate is connected to the inside of the spherical top opening through a traction frame, a lap plate is arranged above the support plate, a servo motor 1 is arranged above the lap plate, and a shaft of the servo motor 1 is connected to a central rotating shaft through a coupling;

[0007] A base is arranged at the bottom end of the central rotating shaft, the top surface of the base is rotatably connected to a swing arm, an extension arm is movably inserted inside the swing arm, and a top seat is integrally formed at the top of the extension arm; and

[0008] The second mounting frame is arranged at the top of the top seat, and the interior of the second mounting frame is rotatably connected with a winding drum, and the traction rope wound on the surface of the winding drum pulls the maintenance hanger.

[0009] Preferably, the support plate is an annular plate structure, and a plurality of traction frames are provided, and the plurality of traction frames are arranged and distributed along the outer annular surface of the support plate. A plurality of positioning holes are opened on the surface of the support plate, and positioning pins are movably inserted inside the positioning holes, and the positioning pins are fixed to the bottom surface of the lap plate.

[0010] Preferably, a plurality of support rods are provided on the top surface of the lap plate, the top ends of the support rods are fixed on the bottom surface of the mounting plate, servo motor 1 is mounted on the top surface of the mounting plate, and the shaft of servo motor 1 passes through the inner ring openings of the mounting plate, the lap plate and the supporting plate.

[0011] Preferably, a plurality of support columns are provided on the bottom surface of the base, and rubber ball heads are provided on the bottom surfaces of the support columns. When the lapping plate is lapped above the supporting plate, the rubber ball heads at the bottom ends of the support columns are in contact with the inner wall of the bottom end of the spherical tank, and the top surface size of the base is smaller than the inner ring opening size of the supporting plate.

[0012] Preferably, the first mounting frame is in a "C"-shaped plate-like structure. A second servo motor is mounted on one side plate of the first mounting frame. The driving shaft of the second servo motor penetrates through one side plate of the first mounting frame and is fixed on the surface of the swing arm. The other side of the swing arm is rotatably connected to the other side plate of the first mounting frame through a limiting shaft, and the swing arm is in a "C"-shaped frame.

[0013] Preferably, a third servo motor is provided on the top surface of the bottom plate of the swing arm. The power output end of the third servo motor is drivingly connected to a lead screw. The lead screw penetrates through the bottom plate of the extension arm and is screwed to the bottom plate of the extension arm. The extension arm is in a "C"-shaped frame. Limiting plates are provided on both side plates of the extension arm, and the limiting plates are slidably connected in corresponding guiding grooves. The guiding grooves are opened on the side plates of the swing arm, and the guiding grooves on the two side plates of the swing arm are symmetrically opposite.

[0014] Preferably, the second mounting frame is in a "C"-shaped plate-like structure. A fourth servo motor is mounted on one side plate of the second mounting frame. The shaft body of the fourth servo motor penetrates through one side plate of the second mounting frame and is fixed to one end of the winding drum. The winding drum is in an "I"-shaped cylindrical structure, and the other end of the winding drum is rotatably connected to the other side plate of the second mounting frame through a pin shaft.

[0015] Preferably, a third mounting frame is provided on the top surface of the top seat. The third mounting frame is in a "C"-shaped plate-like structure. A guide wheel is rotatably connected between the two side plates of the third mounting frame. The towing rope bypasses the guide wheel and is divided into two sections and respectively bolted to two sets of bolt rings. The bolt rings are fixed on the top surface of the maintenance hanging frame.

[0016] Preferably, a buckle plate is provided on the surface of the maintenance hanging frame. The buckle plate is in a "C"-shaped frame structure. The buckle plate is buckled on one side of the top seat. A rubber gasket ring is provided on the side of the maintenance hanging frame away from the buckle plate.

[0017] Preferably, two groups of electric cylinders are symmetrically installed inside the maintenance hanging frame. The piston rods of the electric cylinders penetrate through the side plates of the maintenance hanging frame, and a vacuum chuck is provided at one end of the piston rods of the electric cylinders.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The automatic auxiliary platform for internal inspection during the periodic inspection of the spherical tank proposed by the present invention is overlapped on the supporting plate through the overlap plate, and the central rotating shaft is hoisted and extended into the spherical tank. The swing arm swings against the inner wall of the spherical tank, and the maintenance hanger is towed by the traction rope, and the position of the swing arm is adjusted in coordination with the rotation of the central rotating shaft, so that the maintenance personnel can stand on the maintenance hanger to realize maintenance at any position inside the spherical tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the spherical tank body of the present invention;

[0022] Figure 3 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 4 for Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 5 for Figure 2 A magnified schematic diagram of the structure at C in the middle;

[0025] Figure 6 for Figure 5 A magnified schematic diagram of the structure at D in the middle;

[0026] Figure 7 This is a bottom view of the internal structure of the spherical tank body of the present invention;

[0027] Figure 8 for Figure 7 The enlarged schematic diagram of the structure at E in the middle;

[0028] Fig. 9 This is a schematic diagram of the structure of the extension arm of the present invention after extension;

[0029] Fig.10 It is a schematic diagram of the structure after the extension arm of the present invention is retracted into the swing arm.

[0030] In the figure: spherical tank 1, spherical top mouth 2, traction frame 3, supporting plate 4, lap plate 5, positioning column 6, positioning socket 7, support rod 8, mounting plate 9, servo motor one 10, central shaft 11, base 12, support column 13, mounting frame one 14, servo motor two 15, swing arm 16, servo motor three 17, screw 18, extension arm 19, limit plate 20, guide groove 21, top seat 22, mounting frame two 23, servo motor four 24, reel 25, traction rope 26, guide wheel 27, mounting frame three 28, bolting ring 29, maintenance hanger 30, buckle plate 31, rubber gasket 32, electric cylinder 33, vacuum suction cup 34. DETAILED DESCRIPTION

[0031] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0035] Embodiment 1

[0036] See also Figure 1 , Figure 2 , Fig. 9 as well as Fig.10The present invention provides a technical solution: an automatic auxiliary platform for internal inspection in periodic inspection of a spherical tank, comprising an inspection hanger 30, the inspection hanger 30 is installed in the spherical tank 1, a spherical top opening 2 is arranged on the top of the spherical tank 1, the inside of the spherical top opening 2 is connected with a supporting plate 4 through a traction frame 3, a lap plate 5 is arranged above the supporting plate 4, a servo motor 10 is arranged above the lap plate 5, and the shaft of the servo motor 10 is connected with a central rotating shaft 11 through a coupling; a base 12 is arranged at the bottom end of the central rotating shaft 11, the top surface of the base 12 is rotatably connected with a swing arm 16, an extension arm 19 is movably inserted inside the swing arm 16, and a top seat 22 is integrally formed at the top of the extension arm 19; a mounting frame 23 is arranged at the top end of the top seat 22, the inside of the mounting frame 23 is rotatably connected with a winding drum 25, and the traction rope 26 wound on the surface of the winding drum 25 pulls the inspection hanger 30;

[0037] The central shaft 11 is hoisted and extended into the spherical tank 1 by overlapping the lap plate 5 on the supporting plate 4, and the swing arm 16 is swung against the inner wall of the spherical tank 1. The maintenance hanger 30 is towed by the traction rope 26, and the position of the swing arm 16 is adjusted in coordination with the rotation of the central shaft 11, so that the maintenance personnel can stand on the maintenance hanger 30 to perform maintenance at any position inside the spherical tank 1.

[0038] Embodiment 2

[0039] See attached Figure 7 and Figure 8 On the basis of the first embodiment, in order to realize the limiting of the lap plate 5, the support plate 4 is an annular plate structure, and a plurality of traction frames 3 are provided. The plurality of traction frames 3 are arranged and distributed along the outer ring surface of the support plate 4. The surface of the support plate 4 is provided with a plurality of positioning holes 7, and the internal movably inserted positioning pins 6 of the positioning holes 7 are fixed to the bottom surface of the lap plate 5; a plurality of support rods 8 are provided on the top surface of the lap plate 5, and the top ends of the support rods 8 are fixed to the bottom surface of the mounting plate 9. The servo motor 10 is installed on the top surface of the mounting plate 9, and the shaft of the servo motor 10 passes through the mounting plate 9, the lap plate 5 and the inner ring of the support plate 4. The bottom surface of the base 12 is provided with a plurality of support columns 13, and the bottom surface of the support column 13 is provided with a rubber ball head. When the lap plate 5 is overlapped above the support plate 4, the rubber ball head at the bottom end of the support column 13 contacts the inner wall of the bottom end of the spherical tank 1, and the top surface size of the base 12 is smaller than the inner ring size of the support plate 4.

[0040] When hoisting the lap plate 5, push the base 12 into the inner ring of the supporting plate 4, hoist the lap plate 5 and slowly lower it, insert the positioning plug 6 into the corresponding positioning socket 7 until the lap plate 5 is overlapped on the supporting plate 4. At this time, the rubber ball head at the bottom end of the support column 13 is overlapped on the bottom plate of the spherical tank 1, and the central rotating shaft 11 is at the mid-vertical line position of the spherical tank 1.

[0041] Embodiment 3

[0042] On the basis of the second embodiment, in order to realize the swinging of the swing arm 16 and the transformation of the position of the swing arm 16 towards the inner wall of the spherical tank 1, the first mounting frame 14 has a "C"-shaped plate structure. A second servo motor 15 is installed on one side plate of the first mounting frame 14. The drive shaft of the second servo motor 15 penetrates through one side plate of the first mounting frame 14 and is fixed on the surface of the swing arm 16. The other side of the swing arm 16 is rotatably connected to the other side plate of the first mounting frame 14 through a limiting shaft, and the swing arm 16 has a "C"-shaped frame;

[0043] After the first servo motor 10 drives the base 12 to rotate, the position transformation of the swing arm 16 towards the inner wall of the spherical tank 1 is realized. The second servo motor 15 drives the swing arm 16 to rotate, and the inclination angle transformation of the swing arm 16 is realized. When the swing arm 16 is inclined, it leans against the inner wall of the spherical tank 1, which is convenient for cooperating with the maintenance hanging frame 30 to descend.

[0044] Embodiment Four

[0045] Refer to the appendix Figure 4 Based on the third embodiment, in order to realize the telescopic adjustment of the extension arm 19, a third servo motor 17 is arranged on the top surface of the bottom plate of the swing arm 16. The power output end of the third servo motor 17 is drivingly connected with a lead screw 18. The lead screw 18 penetrates through the bottom plate of the extension arm 19 and is screwed to the bottom plate of the extension arm 19. The extension arm 19 has a "C"-shaped frame. Limiting plates 20 are arranged on both side plates of the extension arm 19. The limiting plates 20 are slidably connected in corresponding guide grooves 21. The guide grooves 21 are opened on the side plates of the swing arm 16, and the guide grooves 21 on both side plates of the swing arm 16 are symmetrically opposite;

[0046] When the third servo motor 17 is started to drive the lead screw 18 to rotate forward, the lead screw 18 drives the extension arm 19 to descend along the swing arm 16. When the third servo motor 17 drives the lead screw 18 to rotate reversely, it drives the extension arm 19 to ascend along the swing arm 16. During this process, the limiting plates 20 slide along the guide grooves 21 to prevent the extension arm 19 from deflecting.

[0047] Embodiment Five

[0048] Refer to the appendix Figure 5 and Figure 6, on the basis of Embodiment 4, in order to realize the lifting traction of the maintenance hanger 30, the mounting frame II 23 is in a "C"-shaped plate structure. A servo motor IV 24 is installed on one side plate of the mounting frame II 23. The shaft body of the servo motor IV 24 penetrates through one side plate of the mounting frame II 23 and is fixed at one end of the winding drum 25. The winding drum 25 is in an "I"-shaped cylindrical structure. The other end of the winding drum 25 is rotatably connected to the other side plate of the mounting frame II 23 through a pin shaft; on the top surface of the top seat 22, there is a mounting frame III 28. The mounting frame III 28 is in a "C"-shaped plate structure. A guide wheel 27 is rotatably connected between the two side plates of the mounting frame III 28. The traction rope 26 is divided into two sections after passing around the guide wheel 27 and is respectively bolted to two groups of bolt rings 29. The bolt rings 29 are fixed on the top surface of the maintenance hanger 30;

[0049] When the servo motor IV 24 drives the winding drum 25 to rotate forward, the winding drum 25 is below the traction rope 26, that is, the traction rope 26 pulls the maintenance hanger 30. After the extension arm 19 extends and leans against the inner wall of the spherical tank 1, the traction rope 26 pulls the maintenance hanger 30 vertically downward below, which is convenient for realizing the maintenance of different heights of the inner wall of the spherical tank 1 by the maintenance personnel standing on the maintenance hanger 30. In cooperation with the rotation of the central rotating shaft 11, the maintenance of the entire circumference of the inner wall of the spherical tank 1 is realized. When the servo motor IV 24 drives the winding drum 25 to rotate in reverse, the traction rope 26 can be pulled to lift the maintenance hanger 30.

[0050] Embodiment 6

[0051] On the basis of Embodiment 5, in order to realize the connection and limit between the maintenance hanger 30 and the inner wall of the spherical tank 1, a buckle plate 31 is arranged on the surface of the maintenance hanger 30. The buckle plate 31 is in a "C"-shaped frame structure. The buckle plate 31 is buckled on one side of the top seat 22. A rubber gasket ring 32 is arranged on the side of the maintenance hanger 30 away from the buckle plate 31. Two groups of electric cylinders 33 are symmetrically installed inside the maintenance hanger 30. The piston rod of the electric cylinder 33 penetrates through the side plate of the maintenance hanger 30, and a vacuum suction cup 34 is arranged at one end of the piston rod of the electric cylinder 33;

[0052] After the maintenance hanger 30 is vertically below, there is a gap between the maintenance hanger 30 and the inner wall of the spherical tank 1. Through the swing of the traction rope 26 and the extension of the piston rod of the electric cylinder 33, the vacuum suction cup 34 is adsorbed on the inner wall of the buckle plate 31, and then the piston rod of the electric cylinder 33 retracts to pull the maintenance hanger 30 closer to the inner wall of the spherical tank 1, which is convenient for the maintenance personnel standing on the maintenance hanger 30 to carry out maintenance work on the inner wall of the spherical tank 1.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic auxiliary platform for internal inspection in periodic inspection of a spherical tank, comprising an inspection hanger (30), the inspection hanger (30) being installed in the spherical tank (1), the top of the spherical tank (1) being provided with a spherical top opening (2), characterized in that: Inside the spherical top opening (2), a support plate (4) is connected through a traction frame (3). Above the support plate (4), a lapping plate (5) is arranged. Above the lapping plate (5), a first servo motor (10) is arranged. The shaft of the first servo motor (10) is connected to a central rotating shaft (11) through a coupling. A base (12) is arranged at the bottom end of the central rotating shaft (11). The top surface of the base (12) is rotatably connected to a swing arm (16). An extension arm (19) is movably inserted into the swing arm (16). A top seat (22) is integrally formed at the top end of the extension arm (19); and A second mounting frame (23) is arranged at the top end of the top seat (22). A winding drum (25) is rotatably connected inside the second mounting frame (23). A traction rope (26) wound on the surface of the winding drum (25) pulls the maintenance hanging frame (30). The support plate (4) has an annular plate structure. There are multiple traction frames (3). The multiple traction frames (3) are arranged and distributed along the outer ring surface of the support plate (4). A plurality of positioning jacks (7) are formed on the surface of the support plate (4). A positioning plug (6) is movably inserted into the positioning jack (7). The positioning plug (6) is fixed to the bottom surface of the lapping plate (5). A plurality of support rods (8) are arranged on the top surface of the lapping plate (5). The top ends of the support rods (8) are fixed to the bottom surface of the mounting plate (9). The first servo motor (10) is mounted on the top surface of the mounting plate (9). The shaft of the first servo motor (10) penetrates through the mounting plate (9), the lapping plate (5) and the inner ring opening of the support plate (4). The first mounting frame (14) has a "C"-shaped plate structure. A second servo motor (15) is mounted on one side plate of the first mounting frame (14). The driving shaft of the second servo motor (15) penetrates through one side plate of the first mounting frame (14) and is fixed to the surface of the swing arm (16). The other side of the swing arm (16) is rotatably connected to the other side plate of the first mounting frame (14) through a limiting shaft, and the swing arm (16) has a "C"-shaped frame. A third servo motor (17) is arranged on the top surface of the bottom plate of the swing arm (16). The power output end of the third servo motor (17) is drivingly connected to a lead screw (18). The lead screw (18) penetrates through the bottom plate of the extension arm (19) and is screwed to the bottom plate of the extension arm (19). The extension arm (19) has a "C"-shaped frame. Limiting plates (20) are arranged on both side plates of the extension arm (19). The limiting plates (20) are slidably connected in corresponding guide grooves (21). The guide grooves (21) are formed in the side plates of the swing arm (16). The guide grooves (21) on both side plates of the swing arm (16) are symmetrically opposite. A third mounting frame (28) is arranged on the top surface of the top seat (22). The third mounting frame (28) has a "C"-shaped plate structure. A guide wheel (27) is rotatably connected between the two side plates of the third mounting frame (28). The traction rope (26) is divided into two sections after passing around the guide wheel (27) and is respectively bolted to two sets of bolt rings (29). The bolt rings (29) are fixed to the top surface of the maintenance hanging frame (30).

2. The automatic auxiliary platform for internal inspection of spherical tanks during periodic inspection according to claim 1 is characterized by: The bottom surface of the base (12) is provided with a plurality of support columns (13). The bottom surface of the support column (13) is provided with a rubber ball head. When the lap joint plate (5) is lapped above the support plate (4), the rubber ball head at the bottom end of the support column (13) contacts the inner wall of the bottom end of the spherical tank (1). The top surface size of the base (12) is smaller than the inner ring opening size of the support plate (4).

3. The automatic auxiliary platform for internal inspection of spherical tanks during periodic inspection according to claim 1 is characterized by: The second mounting frame (23) is in a "C"-shaped plate structure. A fourth servo motor (24) is installed on one side plate of the second mounting frame (23). The shaft body of the fourth servo motor (24) penetrates through one side plate of the second mounting frame (23) and is fixed to one end of the winding drum (25). The winding drum (25) is in an "I"-shaped cylindrical structure. The other end of the winding drum (25) is rotatably connected to the other side plate of the second mounting frame (23) through a pin shaft.

4. The automatic auxiliary platform for internal inspection of spherical tanks during periodic inspection according to claim 1 is characterized by: The surface of the maintenance hanging frame (30) is provided with a buckle plate (31). The buckle plate (31) is in a "C"-shaped frame structure. The buckle plate (31) is buckled on one side of the top seat (22). A rubber gasket ring (32) is arranged on the side of the maintenance hanging frame (30) away from the buckle plate (31).

5. The automatic auxiliary platform for internal inspection of spherical tanks during periodic inspection according to claim 4 is characterized by: Two groups of electric cylinders (33) are symmetrically installed inside the maintenance hanging frame (30). The piston rod of the electric cylinder (33) penetrates through the side plate of the maintenance hanging frame (30), and a vacuum chuck (34) is arranged at one end of the piston rod of the electric cylinder (33).

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