Rotating device for a tank container and method for rotating a tank container

Abstract

The application provides a rotating device and a rotating method for a tank body of a tank. The tank comprises a tank body and connecting rings arranged at two axial ends of the tank body. The rotating device comprises two rotating members arranged at intervals along a longitudinal direction. Each rotating member comprises a roller frame, a rotating ring capable of rotating relative to the roller frame, and a plurality of claws arranged at intervals along a circumferential direction of the rotating ring. Each claw comprises a mounting portion and a connecting portion connected to each other. The mounting portion is detachably connected to the rotating ring, and the connecting portion is used for detachable connection with the connecting ring. The plurality of claws on each rotating ring are connected with one of the connecting rings. The two rotating rings are arranged at the two axial ends of the tank body. The two rotating rings jointly rotate to drive the tank body to rotate relative to the roller frame.

Description

Technical Field

[0001] This invention relates to the field of tank container manufacturing technology, and in particular to a rotating device and method for rotating a tank container. Background Technology

[0002] Currently, when performing automatic circumferential welding and other operations requiring rotation on tank containers, eight process positioning blocks are typically welded onto the tank container's head. These process blocks are then connected to the rotating ring. After the operation is completed, the process blocks need to be removed and the weld points need to be ground, which presents problems such as complex operation. Furthermore, because eight short welds are welded onto the head, welding deformation and discoloration occur inside the head, leading to a decrease in the quality of the tank container. Summary of the Invention

[0003] The purpose of this invention is to provide a rotating device and a rotating method for a tank container to solve the problems of the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a rotating device for a tank container, wherein the tank container includes a tank body and connecting rings arranged at both axial ends of the tank body, and the rotating device for the tank container includes two rotating components spaced apart longitudinally, the rotating components comprising:

[0005] Roller frame; A rotating ring that is rotatable relative to the roller frame; Multiple jaws are spaced apart along the circumference of the rotating ring; each jaw includes an interconnected mounting part and a connecting part, the mounting part being detachably connected to the rotating ring, and the connecting part being detachably connected to the connecting ring. In this configuration, multiple claws on each of the rotating rings are connected to one of the connecting rings. The two rotating rings are positioned at opposite ends of the axial direction of the tank body. The two rotating rings rotate together, causing the tank body to rotate relative to the roller frame.

[0006] In one embodiment, the mounting portion is perpendicular to the axis of the rotating ring, and the connecting portion extends along the axis of the rotating ring to fit against the outer periphery of the connecting ring.

[0007] In one embodiment, the rotating ring is provided with a mounting hole, the mounting hole is circular, and the mounting part is provided with a mounting hole, the length of which extends radially along the rotating ring, so that the radial distance between the connecting part and the rotating ring is adjustable; The connecting part is provided with a connecting hole, which is circular.

[0008] In one embodiment, the number of the claws is four sets, and the four sets of claws are evenly distributed along the circumference of the rotating ring. Each set of claws includes two claws that are spaced apart. The connecting part has an inclined surface to match the curvature of the connecting ring, and the two claws of each set of claws are arranged in a mirror symmetrical manner.

[0009] In one embodiment, the rotating member further includes an axial limiting member; The axial limiting member is disposed on the roller frame, and the axial limiting member passes through the rotating ring and abuts against the axial end of the tank.

[0010] In one embodiment, the axial limiting member includes a support fixed to the roller frame, a mounting rod disposed on the upper part of the support, and an abutment wheel disposed on the end of the mounting rod away from the support. The mounting rod extends axially along the rotating ring and passes through the rotating ring so that the abutment wheel can abut against the tank. The abutment wheel is rotatable and has elasticity.

[0011] In one embodiment, the mounting rod is screwed to the upper part of the support base, allowing the mounting rod to move axially along the rotating ring to approach or move away from the tank. The axis of the abutment wheel extends laterally, so that the outer periphery of the abutment wheel abuts against the tank body; The end of the mounting rod away from the abutment wheel is provided with a handle.

[0012] In one embodiment, the rotating ring includes an outer ring, an end plate disposed at one axial end of the outer ring, and a reinforcing member disposed within the outer ring. The end plate is perpendicular to the outer ring and is detachably connected to the mounting portion.

[0013] In one embodiment, the roller frame includes a base and rollers disposed on the base, the rollers being rotatable relative to the base; The ratio of the axial length of the outer ring to the axial length of the roller is 1.5 to 2. The outer diameter of the outer ring is 2000~2150mm.

[0014] In one embodiment, the reinforcing member includes an inner reinforcing ring, an outer reinforcing ring, and a plurality of reinforcing rods spaced circumferentially along the inner reinforcing ring. The reinforcing rods extend radially and connect the inner reinforcing ring and the outer reinforcing ring, and the outer reinforcing ring is fitted to the inner side of the outer ring.

[0015] The present invention also provides a method for rotating a tank body, comprising the following steps: Multiple jaws are mounted on a rotating ring; Connect the multiple claws to the connecting rings of the tank, and complete the separate connection of the two rotating rings to the connecting rings at both ends of the axial direction of the tank; Start the rollers on the roller frame to make the rotating ring rotate, thereby driving the tank to rotate.

[0016] In one embodiment, it further includes: When manufacturing the tank container, a through hole is first made on the connecting ring, and then the connecting ring is welded to the tank body of the tank container.

[0017] In one embodiment, a through hole is first made, then the ring is wound and welded to obtain the connecting ring; or, The connecting ring is first formed by winding and welding, and then through holes are made.

[0018] In one embodiment, the through hole is located 25-30 mm away from the axial end of the connecting ring away from the cylinder.

[0019] As can be seen from the above technical solution, the present invention has at least the following advantages and positive effects: The rotating device of this invention achieves rapid clamping of the tank container through the detachable connection between the jaws and the rotating ring, and the detachable connection between the jaws and the connecting ring. The rotation of the tank body is driven by the rotation of the rotating ring and the roller frame, thus realizing the rotation operation. This rotating device eliminates the traditional method of welding and installing on the end caps, removing subsequent cutting and grinding processes, thereby reducing production costs. The elimination of welds significantly improves product quality, simplifies the installation process, and increases production efficiency. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of a square and round tank container.

[0021] Figure 2 This is a top view of a square-shaped tank container.

[0022] Figure 3 This is a side view of a square-shaped tank container.

[0023] Figure 4 This is a front view schematic diagram of the rotating device and the square-round tank in this invention.

[0024] Figure 5 yes Figure 4 A partial schematic diagram.

[0025] Figure 6 This is a side view of the rotating device and the square-round tank in this invention.

[0026] Figure 7 This is a side view of the chuck in this invention.

[0027] Figure 8 This is a flowchart illustrating the method for rotating the square can of the present invention.

[0028] Figure 9 This is a schematic diagram of another container.

[0029] Figure 10 yes Figure 9 A schematic diagram of the cross-section of the tank.

[0030] Figure 11 This is a diagram of yet another can.

[0031] Figure 12 yes Figure 11 A schematic diagram of the cross-section of the tank.

[0032] The annotations in the attached figures are explained as follows: 1. Square and round tank box; 111. Cylinder body; 112. End cap; 12. Connecting ring; 121. Main arc; 122. Connecting arc; 21. Roller frame; 211. Base; 212. Roller; 22. Rotating ring; 221. Outer ring; 222. End plate; 226. Inner reinforcing ring; 227. Outer reinforcing ring; 228. Reinforcing rod; 23. Claw; 231. Mounting part; 232. Connecting part; 24. Axial limiting component; 241. Support seat; 242. Mounting rod; 243. Abutment wheel; 5. Tank body; 6. Tank body. Detailed Implementation

[0033] Although the invention can be readily embodied in various forms, only some specific embodiments are shown in the accompanying drawings and will be described in detail in this specification. It is understood that this specification should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to what is described herein.

[0034] Therefore, a feature pointed out in this specification is used to illustrate one feature of one embodiment of the invention, and does not imply that every embodiment of the invention must have the described feature. Furthermore, it should be noted that this specification describes many features. While certain features may be combined to illustrate possible system designs, these features may also be used in other combinations not explicitly stated. Therefore, unless otherwise stated, the described combinations are not intended to be limiting.

[0035] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various elements of the invention are relative rather than absolute. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the descriptions of the positions of these elements change, these directional indications also change accordingly.

[0036] This application provides a rotating device for a tank container, which is used to rotate the tank, taking into account both efficiency and quality of the tank rotation operation.

[0037] This rotating device is suitable not only for tanks with a circular cross-section, but also for tanks with a non-circular cross-section.

[0038] Non-circular shapes include square-circular, rectangular, or other irregular shapes.

[0039] This application uses a square-round tank, a type of non-circular tank, as an example to illustrate the rotating device.

[0040] Fangyuan Tank Container 1 optimizes the utilization of tank space while ensuring structural safety and transport compatibility. (See reference...) Figures 1-3 The square-round tank 1 includes a tank body and connecting rings 12 arranged at both ends of the tank body along its axial direction. The tank body includes a cylindrical body 111 and end caps 112 arranged at opposite ends of the cylindrical body 111.

[0041] The cross-section of cylinder 111 is a non-circular eight-segment arc structure, cleverly combining the advantages of both square and circular shapes. The cross-section of cylinder 111 is formed by eight smoothly connected arcs of different curvatures, creating a shape that is close to square but with rounded corners. This design not only increases volume and improves transportation efficiency but also allows for a more even distribution of internal pressure on the tank wall, avoiding stress concentration problems at corners common in square structures, thus ensuring structural strength and safety. Furthermore, the square-circle structure better adapts to the square internal space of standard containers, reducing wasted space.

[0042] Specifically, the cross-section of the cylinder 111 includes four main circular arcs 121 and a connecting arc 122 connecting any two adjacent main circular arcs 121. The cross-section of the end cap 112 is adapted to the cylinder 111. The cross-section of the connecting ring 12 is also adapted to the cross-section of the cylinder 111, that is, the cross-section of the connecting ring 12 includes four main circular arcs 121 and a connecting arc 122 connecting any two adjacent main circular arcs 121, and the connecting arc 122 is located at the corner of the square-circle structure.

[0043] The rotating device of the tank body (hereinafter referred to as the rotating device) realizes the rotation of the tank body by being detachably connected to the connecting ring 12 of the square and round tank body 1, which avoids welding deformation and discoloration caused by welding on the end cap 112, and ensures the quality of the square and round tank body 1.

[0044] The rotating device will be described in detail below.

[0045] See Figures 4-6The rotating device includes two rotating components spaced apart along the longitudinal direction. The two rotating components are located at the two ends of the tank's axial direction and together support the tank, which extends longitudinally, and drive the tank to rotate around its own axis.

[0046] The rotating component includes a roller frame 21, a rotating ring 22, and multiple claws 23.

[0047] The roller frame 21 includes a base 211 and rollers 212 disposed on the base 211. The distance between the two roller frames 21 is greater than the length of the tank, so that the roller frame 21 cooperates with the rotating ring 22 connected to the end of the tank.

[0048] The base 211 is provided with rollers 212 spaced laterally to support a rotating ring 22. The axis of the rollers 212 extends longitudinally. The rollers 212 are rotatable relative to the base 211.

[0049] The roller 212 has an elastic layer on its outer periphery, and the elastic layer is made of rubber or polyurethane. That is, the roller 212 includes a rigid inner core and an elastic layer disposed on the outer periphery of the rigid inner core. The design of the elastic layer provides sufficient friction to drive the rotating ring 22 to rotate, avoids idling, and ensures the rotation of the rotating ring 22.

[0050] The rotating ring 22 is rotatable relative to the roller frame 21. The rotating ring 22 has a circular cross-section, and its outer circumference is in contact with the outer circumference of the roller 212, so that the rotating ring 22 is driven to rotate when the roller 212 rotates.

[0051] Specifically, the rotating ring 22 includes an outer ring 221, an end plate 222 disposed at one axial end of the outer ring 221, and a reinforcing member disposed within the outer ring 221.

[0052] The outer ring 221 has a circular cross-section. Preferably, the ratio of the axial length of the outer ring 221 to the axial length of the roller 212 is 1.5 to 2, which ensures that the rotation of the rotating ring 22 is relatively stable and is beneficial to the quality of operation when the tank is rotating.

[0053] The outer diameter of the outer ring 221 is smaller than the outer diameter of the square / round tank 1 to ensure that there is no interference between the rotating ring 22 and the connecting ring 12 after they are connected. The outer diameter of the outer ring 221 is 80% to 90% of the outer diameter of the square / round tank 1. Specifically, the outer diameter of the outer ring 221 is 2000 to 2150 mm. Preferably, the outer diameter of the outer ring 221 is 2056 mm, which allows the rotating ring 22 to fit all sizes of square / round tanks 1 in the related art.

[0054] End plate 222 is perpendicular to outer ring 221. End plate 222 is used for detachable connection with mounting part 231. End plate 222 is annular, and the axis of end plate 222 is on the same straight line as the axis of outer ring 221. When rotating ring 22 is connected to connecting ring 12, end plate 222 is located at the end of outer ring 221 near connecting ring 12.

[0055] The rotating ring 22 has a circular mounting hole. Specifically, the end plate 222 has a mounting hole for detachable connection with the claw 23.

[0056] The reinforcing members include an inner reinforcing ring 226, an outer reinforcing ring 227, and a plurality of reinforcing rods 228 spaced circumferentially along the inner reinforcing ring 226. The reinforcing rods 228 extend radially and connect the reinforcing ring and the outer reinforcing ring 227, with the outer reinforcing ring 227 fitting against the inner side of the outer ring 221. In this embodiment, there are four reinforcing rods 228, corresponding to the positions of four sets of claws 23, so that the force on the rotating ring 22 in four directions can be well distributed.

[0057] Specifically, in this embodiment, the reinforcing member is connected to the outer ring 221 by welding the outer reinforcing ring 227 to the outer ring 221, and the end plate 222 is welded to the outer ring 221. The end plate 222 and the outer reinforcing ring 227 are not welded together. The outer reinforcing ring 227 is made of channel steel, and its opening faces the outer ring 221.

[0058] Multiple jaws 23 are spaced apart along the circumference of the rotating ring 22. Specifically, there are four sets of jaws 23, which are evenly distributed along the circumference of the rotating ring 22. Each set of jaws 23 includes two jaws 23 spaced apart. That is, each rotating ring 22 includes eight jaws 23. Each set of jaws 23 is set corresponding to the main arc 121.

[0059] Each rotating ring 22 has multiple claws 23 connected to one of the connecting rings 12, meaning that the two rotating rings 22 correspond one-to-one with the connecting rings 12 at both ends of the two tanks' axial direction. The two rotating rings 22 are positioned at both ends of the tank's axial direction, and their joint rotation causes the tank to rotate relative to the roller frame 21.

[0060] See Figure 7 Each claw 23 includes an interconnected mounting portion 231 and a connecting portion 232. The mounting portion 231 is detachably connected to the rotating ring 22, and the connecting portion 232 is detachably connected to the connecting ring 12. In this embodiment, the claw 23 is generally L-shaped.

[0061] Combination Figure 6 and Figure 7The connecting part 232 has an inclined surface to match the curvature of the connecting ring 12, and the two claws 23 of each set of claws 23 are arranged in a mirror image symmetrically. That is, it is sufficient to ensure that the inner surface of the connecting part 232 can fit against the outer periphery of the connecting ring 12. It can be understood that the inclined surface is the outer tangent surface of the connecting ring 12.

[0062] The mounting part 231 is provided with mounting holes. When the pawl is connected to the rotating ring 22, the length of the mounting holes extends radially along the rotating ring 22, making the radial distance between the connecting part 232 and the rotating ring 22 adjustable. In this embodiment, the mounting part 231 has two mounting holes arranged side by side, and the two mounting holes are arranged at intervals along the circumference of the rotating ring 22.

[0063] The mounting part 231 and the connecting ring 12 are detachably connected by fasteners that are simultaneously inserted. The fasteners are high-strength bolts.

[0064] The connecting part 232 has a circular connecting hole. The connecting ring 12 has a circular through hole. The connecting hole corresponds to the through hole on the connecting ring 12, and a detachable connection between the connecting part 232 and the connecting ring 12 is achieved by fasteners. High-strength bolts are used as fasteners.

[0065] Preferably, the length of the connecting part 232 meets the following requirements: after the connecting part 232 is connected to the connecting ring 12, there is a gap between the end of the connecting part 232 away from the mounting part 231 and the end of the connecting ring 12 away from the mounting part 231, so that the connecting part 232 does not reach the circumferential weld between the connecting ring 12 and the end cap 112, thus avoiding interference.

[0066] The chuck 23 is made of carbon steel to ensure its strength. The chuck 23 can be a one-piece molded structure or a welded structure.

[0067] The rotating component also includes axial limiting components 24, which restrict the movement of the tank along the axial direction during rotation by abutting against the tank body through two axial limiting components 24.

[0068] The axial limiting member 24 is disposed on the roller frame 21, and the axial limiting member 24 passes through the rotating ring 22 and abuts against the axial end of the tank.

[0069] Specifically, the axial limiting member 24 includes a support base 241 fixed to the roller frame 21, a mounting rod 242 disposed on the upper part of the support base 241, and an abutment wheel 243 disposed on the end of the mounting rod 242 away from the support base 241. The mounting rod 242 extends axially along the rotating ring 22, and passes through the rotating ring 22 so that the abutment wheel 243 can abut against the tank body. The abutment wheel 243 is rotatable. The abutment wheel 243 is elastic.

[0070] The abutment wheel 243 extends laterally along its axis, allowing its outer circumference to abut against the tank body. The abutment wheel 243 rotates around its own axis.

[0071] In this embodiment, the abutment wheel 243 is made of rubber or polyurethane to avoid damage to the tank.

[0072] Preferably, the axis of the mounting rod 242 is on the same straight line as the axis of the rotating ring 22.

[0073] The mounting rod 242 is screwed to the upper part of the support base 241, allowing the mounting rod 242 to move axially along the rotating ring 22 to approach or move away from the tank. Specifically, the support base 241 includes a fixed rod fixed to the top of the roller frame 21, two support rods disposed on the fixed rod, and a sleeve disposed on the top of the two support rods. The fixed rod extends longitudinally, and the two support rods are spaced apart longitudinally. A reinforcing rod 228 is provided between the two support rods. The number of reinforcing rods 228 can be set according to actual needs, and there is a gap between the reinforcing rods 228 and the sleeve.

[0074] The sleeve extends longitudinally. The sleeve is screwed to the mounting rod 242. Specifically, the sleeve is hollow, and the inner wall of the sleeve is circumferentially threaded. The outer circumference of the mounting rod 242 is threaded, and the external thread is adapted to the internal thread.

[0075] The end of the mounting rod 242 away from the abutment wheel 243 is provided with a handle (not shown in the figure). Exemplarily, the handle may be two operating levers protruding from the outer periphery of the mounting rod 242, extending radially along the mounting rod 242, and both operating levers being on the same diameter. An operator can rotate the mounting rod 242 by gripping the operating levers, thereby moving the mounting rod 242 longitudinally and causing the abutment wheel 243 to move closer to or away from the tank.

[0076] The rotating device in this invention achieves rapid clamping of the square and round tank 1 through the detachable connection between the jaw 23 and the rotating ring 22, and the detachable connection between the jaw 23 and the connecting ring 12. The rotation of the tank body is driven by the rotation of the rotating ring 22 and the roller frame 21, thus realizing the rotation operation. This rotating device eliminates the need for welding on the end cap 112, removing subsequent cutting and grinding processes, thereby reducing production costs. The elimination of welds significantly improves product quality, simplifies the installation process, and increases production efficiency.

[0077] See Figure 8 The present invention also provides a method for rotating a tank body, comprising the following steps: S1. Install multiple jaws 23 onto a rotating ring 22.

[0078] Specifically, multiple jaws 23 are mounted to the end plate 222 of the rotating ring 22 using fasteners. In this embodiment, the fasteners are high-strength bolts.

[0079] The fasteners pre-connect the claw 23 to the rotating ring 22, and do not need to be fully tightened.

[0080] S2. Connect the multiple claws 23 to the connecting rings 12 of the square and round tank box 1, and complete the connection of the two rotating rings 22 to the connecting rings 12 at both ends of the axial direction of the square and round tank box 1.

[0081] For example, the square and round tank container 1 is hoisted between two roller frames 21 by a hoisting device, and then connected to the rotating ring 22 by the claw 23, and then the hoisting device is disconnected from the square and round tank container 1.

[0082] Specifically, multiple claws 23 are connected to the connecting ring 12 by fasteners. In this embodiment, the fasteners are high-strength bolts.

[0083] In this process, the fastener first pre-connects the claw 23 to the connecting ring 12, without needing to be fully tightened.

[0084] After the claw 23 is pre-connected to the rotating ring 22 and the connecting ring 12, tighten all the fasteners to secure them.

[0085] Before the clamp 23 is connected to the connecting ring 12 of the square-round tank 1, the connecting ring 12 is already installed on the tank body. However, a through hole is first made in the connecting ring 12 before it is welded to the tank body. Specifically, when manufacturing the square-round tank 1, a through hole is first made in the connecting ring 12, and then the connecting ring 12 is welded to the tank body of the square-round tank 1. Making the hole in advance facilitates operation and improves the accuracy of the hole making. Furthermore, the connecting ring 12 is obtained by first making the through hole, then winding and welding it.

[0086] That is, the material is cut first, then through holes are made, and finally welded to form a connecting ring 12 with through holes.

[0087] In other embodiments, the connecting ring 12 can be obtained by first winding and welding, and then through holes can be opened.

[0088] Specifically, the through hole is located 25-30 mm away from the axial end of the connecting ring 12, away from the cylinder 111. This design ensures the strength of the connecting ring 12.

[0089] S3. Start the rollers 212 on the roller frame 21 to make the rotating ring 22 rotate, thereby driving the tank to rotate.

[0090] After the square-shaped tank 1 is connected to the rotating ring 22, the roller 212 is started to drive the rotating ring 22 to rotate, and the tank body rotates accordingly. While the tank body is rotating, welding or assembly can be performed on it, such as welding heating tubes, reinforcing rings, etc. on the tank body.

[0091] Furthermore, the steps included between activating roller 212 are as follows: The axial limiting member 24 abuts against the tank body.

[0092] Specifically, by rotating the mounting rod 242, the abutment wheel 243 is moved longitudinally to abut against the tank.

[0093] After the rotation operation is completed, the mounting rod 242 is rotated to move the abutment wheel 243 longitudinally away from the tank. It should be noted that the initial state of the axial limiting member 24 is that the abutment wheel 243 is away from the tank.

[0094] This rotation method, through the detachable connection between the claw 23 and the rotating ring 22, and the detachable connection between the claw 23 and the connecting ring 12, eliminates the need for welding, cutting, and grinding of process blocks, thereby improving work efficiency and product quality of the square and round tank box 1.

[0095] See Figure 9 and Figure 10 In other embodiments, the cross-section of the tank 5 is square and round, and its overall outer contour is roughly rectangular. The main body is composed of arc surfaces, forming a square and round structure with an outer square and an inner circle.

[0096] The rotating device of this application can be used in conjunction with the aforementioned tank 5 to drive it to rotate.

[0097] See Figure 11 and Figure 12 In other embodiments, the cross-section of the tank 6 is square-circular, and its overall outer contour is roughly square with a notch at the bottom, meaning that the cross-section of the tank 6 is not a closed square-circular shape.

[0098] The rotating device of this application can be used in conjunction with the aforementioned tank 6 to drive it to rotate.

[0099] Other non-circular, irregularly shaped tanks (not shown) can be rotated using the rotating device described in this application.

[0100] Although the invention has been described with reference to several typical embodiments, it should be understood that the terminology used is illustrative and exemplary, and not restrictive. Since the invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A rotating device for a tank container, the tank container comprising a tank body and connecting rings arranged at both axial ends of the tank body, characterized in that, The rotating device for the tank body includes two rotating components spaced apart longitudinally, each rotating component comprising: Roller frame; A rotating ring that is rotatable relative to the roller frame; Multiple jaws are spaced apart along the circumference of the rotating ring; each jaw includes an interconnected mounting part and a connecting part, the mounting part being detachably connected to the rotating ring, and the connecting part being detachably connected to the connecting ring. In this configuration, multiple claws on each of the rotating rings are connected to one of the connecting rings. The two rotating rings are positioned at opposite ends of the axial direction of the tank body. The two rotating rings rotate together, causing the tank body to rotate relative to the roller frame.

2. The rotating device for the tank body according to claim 1, characterized in that, The mounting portion is perpendicular to the axis of the rotating ring, and the connecting portion extends along the axis of the rotating ring to fit against the outer periphery of the connecting ring.

3. The rotating device for the tank body according to claim 2, characterized in that, The rotating ring is provided with a mounting hole, which is circular. The mounting part is provided with a mounting hole, the length of which extends radially along the rotating ring, so that the radial distance between the connecting part and the rotating ring is adjustable. The connecting part is provided with a connecting hole, which is circular.

4. The rotating device for the tank body according to claim 1, characterized in that, The number of the claws is four sets, and the four sets of claws are evenly distributed along the circumference of the rotating ring. Each set of claws includes two claws that are spaced apart. The connecting part has an inclined surface to match the curvature of the connecting ring, and the two claws of each set of claws are arranged in a mirror symmetrical manner.

5. The rotating device for the tank body according to claim 1, characterized in that, The rotating component also includes an axial limiting component; The axial limiting member is disposed on the roller frame, and the axial limiting member passes through the rotating ring and abuts against the axial end of the tank body.

6. The rotating device for the tank body according to claim 5, characterized in that, The axial limiting member includes a support base fixed to the roller frame, a mounting rod disposed on the upper part of the support base, and an abutment wheel disposed on the end of the mounting rod away from the support base. The mounting rod extends axially along the rotating ring and passes through the rotating ring so that the abutment wheel can abut against the tank body. The abutment wheel is rotatable and has elasticity.

7. The rotating device for the tank body according to claim 6, characterized in that, The mounting rod is screwed to the upper part of the support base, allowing the mounting rod to move along the axial direction of the rotating ring to approach or move away from the tank. The axis of the abutment wheel extends laterally, so that the outer periphery of the abutment wheel abuts against the tank body; The end of the mounting rod away from the abutment wheel is provided with a handle.

8. The rotating device for the tank body according to claim 1, characterized in that, The rotating ring includes an outer ring, an end plate disposed at one axial end of the outer ring, and a reinforcing member disposed within the outer ring. The end plate is perpendicular to the outer ring and is used for detachable connection with the mounting portion.

9. The rotating device for the tank body according to claim 8, characterized in that, The roller frame includes a base and rollers disposed on the base, the rollers being rotatable relative to the base; The ratio of the axial length of the outer ring to the axial length of the roller is 1.5 to 2. The outer diameter of the outer ring is 2000~2150mm.

10. The rotating device for the tank body according to claim 8, characterized in that, The reinforcing member includes an inner reinforcing ring, an outer reinforcing ring, and a plurality of reinforcing rods spaced circumferentially along the inner reinforcing ring. The reinforcing rods extend radially and connect the inner reinforcing ring and the outer reinforcing ring, and the outer reinforcing ring is fitted to the inner side of the outer ring.

11. A method for rotating a tank body, characterized in that, Includes the following steps: Multiple jaws are mounted on a rotating ring; Connect the multiple claws to the connecting rings of the tank, and complete the separate connection of the two rotating rings to the connecting rings at both ends of the axial direction of the tank; Start the rollers on the roller frame to make the rotating ring rotate, thereby driving the tank to rotate.

12. The method for rotating the tank body according to claim 11, characterized in that, Also includes: When manufacturing the tank container, a through hole is first made on the connecting ring, and then the connecting ring is welded to the tank body of the tank container.

13. The method for rotating the tank body according to claim 12, characterized in that, The connecting ring is obtained by first creating a through hole, then winding and welding it; or, The connecting ring is first formed by winding and welding, and then through holes are made.

14. The method for rotating the tank body according to claim 12, characterized in that, The through hole is located 25-30 mm away from the axial end of the connecting ring at the cylinder body.

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