Automatic aligning vertical rotating mechanism for large metal barrel section

Abstract

The invention discloses a large metal cylinder section automatic aligning vertical rotating mechanism which comprises an adjusting driving device and a supporting rolling device which are arranged on a workbench, the supporting rolling device comprises a first supporting rolling mechanism and a second supporting rolling mechanism, the first supporting rolling mechanism is in rolling contact with the inner wall of a cylinder section workpiece, and the second supporting rolling mechanism is in rolling contact with the inner wall of the cylinder section workpiece. The first supporting and rolling mechanism comprises two vertical supporting and rolling pieces which are arranged in parallel, and the second supporting and rolling mechanism is used for being supported at the bottom of a cylinder section workpiece and comprises a plurality of rotary supporting seats; the adjusting driving device comprises a pre-tightening mechanism moving in the linear direction and a rotating mechanism connected with the pre-tightening mechanism, and the rotating mechanism is driven by the pre-tightening mechanism to abut against the inner wall of the barrel section workpiece. The automatic aligning vertical rotating mechanism for the large metal cylinder section comprises an adjusting driving device and a supporting rolling device, can automatically adjust the circle center, and has the characteristics of low power consumption, high efficiency, high stability and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of barrel segment processing, in particular to an automatic centering vertical rotating mechanism for a large metal barrel segment. Background Art

[0002] Large metal cylinders are widely used in aerospace, shipbuilding, wind power and other industries, and their processing and production are inseparable from the participation of rotating mechanisms. Large metal cylinders require a certain amount of rotational motion in the processes of coil welding, curvature correction, and special surface treatment.

[0003] However, the traditional metal barrel section rotation mechanism still has the following problems for high-efficiency and high-stability vertical rotation of large barrel sections: (1) Traditional metal cylinder segment rotating mechanisms are mostly horizontal structures, with fewer vertical rotating structures. The horizontal rotating structure has higher rotation stability, but the loading and unloading process is more complicated, and the workpiece surface is easily damaged during the rotation process; (2) The traditional vertical rotary mechanism usually rotates by rotating the base, and the base clamping device clamps the barrel section workpiece to drive it to rotate synchronously. This driving method has high energy consumption, and the loading and clamping process is time-consuming and labor-intensive, and also causes certain damage to the workpiece surface; (3) The traditional rotary mechanism has poor rotational position stability, the center position of the workpiece cannot be guaranteed, and it is not convenient to quickly adjust the center position of the workpiece, which leads to the inability to efficiently cooperate with the subsequent operation device, affecting the overall processing efficiency.

[0004] The above factors will make it difficult to achieve efficient and stable automatic rotation of metal barrel workpieces, and it is not convenient to quickly adjust the center of the circle. Therefore, in order to meet the application requirements, it is necessary to develop a vertical rotation mechanism with high efficiency and high stability for automatic centering of large metal barrels. Summary of the invention

[0005] Purpose of the invention: To provide a large metal cylinder segment automatic centering vertical rotating mechanism to solve the problems in the prior art that efficient and high-stability automatic rotation of metal cylinder segment workpieces is difficult to achieve and the center of the circle is not easy to adjust quickly.

[0006] Technical solution:

[0007] A large metal barrel section automatic centering vertical rotating mechanism, comprising an adjustment drive device and a supporting rolling device arranged on a workbench, wherein the supporting rolling device comprises a first supporting rolling mechanism and a second supporting rolling mechanism, wherein the first supporting rolling mechanism is in rolling contact with the inner wall of the barrel section workpiece, wherein the first supporting rolling mechanism comprises two supporting rolling members arranged vertically and in parallel, wherein the second supporting rolling mechanism is used to support the bottom of the barrel section workpiece, and wherein the second supporting rolling mechanism comprises a plurality of rotating supporting seats; The adjustment drive device includes a pre-tightening mechanism that moves in a linear direction and a rotating mechanism connected to the pre-tightening mechanism. When working, the rotating mechanism abuts against the inner wall of the barrel section workpiece under the drive of the pre-tightening mechanism and drives the barrel section workpiece to rotate. Taking the movement direction of the pre-tightening mechanism as the symmetry axis, the two supporting rolling elements and a plurality of the rotating supporting seats are symmetrically distributed on both sides of the symmetry axis on the workbench; When the barrel section workpiece is placed on the vertical rotating mechanism for centering, the bottom of the barrel section workpiece is first placed on the rotating support seat, and the preload mechanism drives the rotating mechanism to move in the direction away from the first supporting rolling mechanism until the two supporting rolling elements abut against the inner wall of the barrel section workpiece in a line contact manner, and the rotating mechanism abuts against the inner wall of the barrel section workpiece in a surface contact manner, and the above three contact positions are projected onto the workbench in the vertical direction to form a triangular structure, and the barrel section workpiece rotates around the geometric center axis of the barrel section workpiece under the rotational drive of the rotating mechanism.

[0008] In a further embodiment, the supporting rolling element includes a supporting column and a plurality of tapered roller bearings, the plurality of tapered roller bearings are rotatably sleeved on the supporting column along the height direction of the supporting column, and a bearing gasket is provided between two adjacent tapered roller bearings.

[0009] In a further embodiment, the support column is a cylindrical structure, two of the support columns are symmetrically arranged on both sides of the symmetry axis, the distance between the two parallel support columns is 450-500 mm, and the height of the support column is 1500-2500 mm.

[0010] In a further embodiment, a plurality of the rotating support seats are arranged on the workbench according to the diameter of the barrel section workpiece and are located outside the first supporting rolling mechanism; Several rotating support seats are respectively arranged in the first supporting area and the second supporting area on the workbench. Several rotating support seats arranged in the first supporting area are close to the two supporting columns, and several rotating support seats arranged in the second supporting area are located in the extension direction of the pre-tightening mechanism.

[0011] In a further embodiment, the number of the plurality of rotating support seats is an odd number, an odd number of the rotating support seats are provided in the first supporting area, and an even number of the rotating support seats are provided in the second supporting area; Wherein, one of the rotating support seats in the first supporting area is distributed on the axis of the symmetry axis and is arranged parallel to the axis of the symmetry axis; An even number of the rotating support seats in the first supporting area and the second supporting area are symmetrically distributed on both sides of the axis of the symmetry axis.

[0012] In a further embodiment, the rotating support seat includes a roller shell, the roller shell is mounted on the roller shaft through a deep groove ball bearing sleeve, the roller shaft is mounted on the roller bracket through an end cover, and the roller bracket is detachably mounted on the workbench through a mounting flange.

[0013] In a further embodiment, projections of the axes of the roller shafts included in an even number of the rotating support seats in the first support area and the second support area on the workbench form an angle with the axis of the symmetry axis.

[0014] In a further embodiment, the pre-tightening mechanism comprises a pre-tightening electric cylinder, a fixed end of the pre-tightening electric cylinder is mounted on the workbench via a connecting member, and a telescopic end of the pre-tightening electric cylinder is connected to the rotating mechanism.

[0015] In a further embodiment, the rotating mechanism includes a hub motor, and the hub motor is connected to the telescopic end of the preload electric cylinder via a motor adapter plate and a fixing pin.

[0016] In a further embodiment, a sliding mechanism is further provided between the rotating mechanism and the workbench, the sliding mechanism comprising a slider and a guide rail for linear sliding of the slider, the slider is mounted on the motor adapter plate, and the guide rail is provided on the workbench via a guide rail adapter plate.

[0017] The beneficial effects of the present invention include adjusting the driving device and supporting the rolling device, which can automatically adjust the center of the circle and has the characteristics of low power consumption, high efficiency, high stability, etc. The mechanism can realize the automatic rotation movement of the cylinder section with a height of 1000-1500mm, a wall thickness of 20-40mm, and a diameter of 1000-1700mm. The specific effects are as follows: (1) The rotary drive method uses a wheel hub motor and a pre-tightening electric cylinder to drive the large metal cylinder workpiece through static friction. The drive method is novel, causes less damage to the workpiece surface, and has low overall power consumption, which is in line with the current trend of energy conservation and emission reduction; (2) The support column is equipped with a plurality of tapered roller bearings and a plurality of rotating support seats, which not only reduces the friction resistance during the rotation process, but also can bear a large load force; (3) The vertical rotating mechanism is convenient for loading and unloading. There is no need to strictly control the position of the workpiece. The preload electric cylinder automatically adjusts the center of the circle and can maintain the stability of the workpiece position during the movement. The adjustment of the center of the circle is fast and convenient, so that the subsequent processing operations of the barrel section workpiece can be coordinated quickly and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of a large metal cylinder segment automatic centering vertical rotating mechanism of the present invention.

[0019] Figure 2 It is a schematic diagram of the composition of the adjusting rotating device of the present invention.

[0020] Figure 3 It is a schematic diagram of the composition of the supporting rolling device of the present invention.

[0021] Figure 4 It is a two-dimensional cross-sectional schematic diagram of the rotary support seat of the present invention.

[0022] Figure 5 It is a flow chart of the rotational motion control of the present invention.

[0023] Figure 6 It is a top view schematic diagram of the placement of a large metal cylinder section workpiece of the present invention.

[0024] Figure 7 It is a front view schematic diagram of the placement of a large metal cylinder section workpiece of the present invention.

[0025] The accompanying drawings are marked as: adjustment drive device 1, preloaded electric cylinder 1-1, electric cylinder driver 1-2, hub motor 1-3, motor driver 1-4, motor adapter plate 1-5, guide rail adapter plate 1-6, electric cylinder front adapter plate 1-7, electric cylinder rear adapter plate 1-8, rotation drive adapter plate 1-9, fixed pin shaft 1-10, slider 1-11, guide rail 1-12, support rolling device 2, support column 2-1, tapered roller bearing 2-2, bearing gasket 2-3, rotation support seat 2-4, roller bracket 2-4-1, roller shaft 2-4-2, roller housing 2-4-3, end cover 2-4-4, deep groove ball bearing 2-4-5, control system 3. DETAILED DESCRIPTION

[0026] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0028] Reference Figure 1-7, is a large-scale metal barrel automatic centering vertical rotating mechanism disclosed by the present invention, comprising an adjusting driving device 1 and a supporting rolling device 2 arranged on a workbench, wherein the supporting rolling device 2 comprises a first supporting rolling mechanism and a second supporting rolling mechanism, wherein the first supporting rolling mechanism is in rolling contact with the inner wall of the barrel workpiece, the first supporting rolling mechanism comprises two vertically and parallelly arranged supporting rolling members, the two supporting rolling members are arranged in parallel on both sides of the adjusting driving device 1 on the workbench, the second supporting rolling mechanism is used to support the bottom of the barrel workpiece, and the second supporting rolling mechanism comprises a plurality of rotating supporting seats 2-4; the adjusting driving device 1 comprises a pre-tightening mechanism moving in a linear direction and a rotating mechanism connected to the pre-tightening mechanism, and when working, the rotating mechanism abuts against the inner wall of the barrel workpiece under the drive of the pre-tightening mechanism and drives the barrel workpiece to rotate; with the movement direction of the pre-tightening mechanism as the axis of symmetry, the two supporting rolling members and the plurality of rotating supporting seats 2-4 are symmetrically arranged on the workbench respectively. Distributed on both sides of the symmetry axis; when the barrel section workpiece is placed on the vertical rotating mechanism for centering, the bottom of the barrel section workpiece is first placed on the rotating support seat 2-4, and the pre-tightening mechanism drives the rotating mechanism to move in the direction away from the first supporting rolling mechanism until the two supporting rolling elements abut against the inner wall of the barrel section workpiece in a line contact manner, and the rotating mechanism abuts against the inner wall of the barrel section workpiece in a surface contact manner, and the above three contact positions are projected onto the workbench in the vertical direction to form a triangular structure, and under the rotational driving action of the rotating mechanism, the barrel section workpiece rotates around the geometric center axis of the barrel section workpiece, and the thrust of the pre-tightening mechanism and the driving force of the rotating mechanism itself act on the barrel section workpiece together, and the static friction force formed between the two acts as a rotary driving force to drive the barrel section workpiece to rotate. The mechanism can realize the automatic rotation movement of barrel sections with a height of 1000-1500mm, a wall thickness of 20-40mm, and a diameter of 1000-1700mm.

[0029] The supporting rolling element includes a supporting column 2-1 and a plurality of tapered roller bearings 2-2. The plurality of tapered roller bearings 2-2 are rotatably sleeved on the supporting column 2-1 along the height direction of the supporting column 2-1. A bearing gasket 2-3 is arranged between two adjacent tapered roller bearings 2-2. The bottom of the supporting column 2-1 is fixed on the workbench. Through the pre-tightening thrust of the two supporting columns 2-1 and the pre-tightening mechanism, the rotating mechanism and the two supporting columns 2-1 are distributed in a triangular shape on the workbench. The three contact points determine the barrel section workpiece. The position of the center of the circle, in order to reduce the friction between the inner wall of the barrel workpiece and the supporting column 2-1, a plurality of tapered roller bearings 2-2 are evenly installed on the two supporting columns 2-1, and the larger sliding friction between the barrel workpiece and the supporting column 2-1 during the rotation process is converted into smaller rolling friction. At the same time, bearing gaskets 2-3 are added between the tapered roller bearings 2-2 to separate them, so as to prevent the tapered roller bearing 2-2 at the lower end from rotating and getting stuck due to the effect of gravity. The tapered roller bearing 2-2 has a large radial bearing capacity, and a long service life can also be guaranteed.

[0030] The support column 2-1 is a cylindrical structure, and the two support columns 2-1 are symmetrically arranged on both sides of the symmetry axis. The spacing between the two parallel support columns 2-1 is 450-500mm. Within this spacing range, the barrel section workpiece can be supported more stably, and the accuracy of the centering operation is improved. Preferably, the spacing between the two support column 2-1 brackets is 480mm, and the height of the support column 2-1 is 1500-2500mm. The height setting of the support column 2-1 can also better adapt to the barrel section workpiece with a height of 1000-1500mm without affecting the loading and unloading of the barrel section workpiece. Preferably, the height of the support column 2-1 is 2000mm.

[0031] Several of the rotating support seats 2-4 are arranged on the workbench according to the diameter size of the barrel section workpiece and are located on the outside of the first supporting rolling mechanism; several of the rotating support seats 2-4 are respectively arranged in the first supporting area and the second supporting area on the workbench, and several of the rotating support seats 2-4 arranged in the first supporting area are close to the two supporting columns 2-1, and several of the rotating support seats 2-4 arranged in the second supporting area are located in the extension direction of the pre-tightening mechanism. The rotating support seats 2-4 arranged in different position distributions can more comprehensively play an effective supporting role at the bottom of the barrel section workpiece.

[0032] The number of the rotating support seats 2-4 is an odd number, an odd number of the rotating support seats 2-4 are arranged in the first supporting area, and an even number of the rotating support seats 2-4 are arranged in the second supporting area; wherein, one of the rotating support seats 2-4 in the first supporting area is distributed on the axis of the symmetry axis and is arranged parallel to the axis of the symmetry axis, and the rotating support seat 2-4 is located at the center position between the two supporting columns 2-1; the even number of the rotating support seats 2-4 in the first supporting area and the second supporting area are symmetrically distributed on both sides of the axis of the symmetry axis, and the symmetrically distributed even number of rotating support seats 2-4 can support the bottom of the barrel section workpiece more stably and balancedly.

[0033] The rotating support seat 2-4 includes a roller shell 2-4-3, and the roller shell 2-4-3 is sleeved on the roller shaft 2-4-2 through a deep groove ball bearing 2-4-5. The roller shaft 2-4-2 is arranged on the roller bracket 2-4-1 through an end cover 2-4-4. The roller bracket 2-4-1 is detachably arranged on the workbench through a mounting flange, and the mounting flange is connected to the workbench. The bottom of the barrel section workpiece is placed on the roller shell 2-4-3. When the pre-tightening mechanism pushes the barrel section workpiece to adjust the center of the circle, the barrel section workpiece slides horizontally on the roller shell 2-4-3. When the rotating mechanism drives the barrel section workpiece to rotate, the rotation process of the barrel section workpiece and the rotating support seat 2-4 are also rolling frictions. In order to adapt to barrel section workpieces of different sizes, a plurality of mounting holes for facilitating the installation of the rotating support seat 2-4 can be pre-opened on the workbench. When adapting to barrel section workpieces of different sizes, by adjusting the position of the rotating support seat 2-4 to point to different centers of circles, the rotation movement of barrel section workpieces of different specifications and diameters can be achieved.

[0034] The projection of the axis of the roller shaft 2-4-2 included in the even number of the rotating support seats 2-4 in the first supporting area and the second supporting area on the workbench forms an angle with the axis of the symmetry axis. When the angle needs to be adjusted, the roller bracket 2-4-1 and the mounting flange can be disassembled first. Since a number of screw holes that can match the mounting holes of the roller bracket 2-4-1 are opened around the center of the mounting flange on the mounting flange, when the angle adjustment requirement is met to adapt to the placed barrel section workpiece, the mounting holes on the disassembled roller bracket 2-4-1 can be connected to the screw holes at appropriate positions on the mounting flange. This can not only fix the roller bracket 2-4-1, but also change the angle of the angle.

[0035] The pre-tightening mechanism includes a pre-tightening electric cylinder 1-1, the fixed end of the pre-tightening electric cylinder 1-1 is installed on the workbench through a connecting piece, the telescopic end of the pre-tightening electric cylinder 1-1 is connected to the rotating mechanism, the connecting piece includes an electric cylinder rear adapter plate 1-8 and an electric cylinder front adapter plate 1-7, the electric cylinder rear adapter plate 1-8 and the electric cylinder front adapter plate 1-7 are both arranged on the workbench, and electrical limit switches are arranged at the front and rear of the pre-tightening electric cylinder 1-1 to ensure that the electric cylinder stroke is within a certain range. The pre-tightening electric cylinder 1-1 mainly plays the role of pushing the workpiece to translate, and then adjusts the center position of the workpiece. After reaching the specified position, the pre-tightening electric cylinder 1-1 switches the operating mode to maintain a certain thrust output so that the workpiece is in a tight state.

[0036] The rotating mechanism includes a hub motor 1-3, which is connected to the telescopic end of the pre-tightening electric cylinder 1-1 through a motor adapter plate 1-5 and a fixed pin shaft 1-10. The pre-tightening mechanism drives the hub motor 1-3 to reciprocate linearly to ensure that the wheel is close to the inner wall of the barrel section workpiece. The wheel material of the hub motor 1-3 is made of highly wear-resistant and high-friction polyurethane material. The thrust of the pre-tightening electric cylinder 1-1 and the driving force of the hub motor 1-3 act on the barrel section workpiece together, and the static friction force formed between the two acts as a rotary driving force to drive the workpiece to rotate; A sliding mechanism is also provided between the rotating mechanism and the workbench, and the sliding mechanism includes a slider 1-11 and a guide rail 1-12 for linear sliding of the slider 1-11. The slider 1-11 is installed on the motor adapter plate 1-5, and the guide rail 1-12 is provided on the workbench through the guide rail adapter plate 1-6. The sliding range and sliding direction of the slider 1-11 in the guide rail 1-12 are consistent with the telescopic range and telescopic direction of the preload electric cylinder 1-1. The cooperation of the slider 1-11 and the guide rail 1-12 ensures that the telescopic process of the preload electric cylinder 1-1 is In order to meet the straightness requirements, the guide rail adapter plate 1-6, the electric cylinder front adapter plate 1-7 and the electric cylinder rear adapter plate 1-8 mainly play the role of transfer and support. The installation contact surface has a high processing accuracy to ensure that the preloaded electric cylinder 1-1 is not stuck during the extension and retraction process. A rotary drive adapter plate 1-9 is also provided on the workbench. The electric cylinder driver 1-2 and the motor driver 1-4 are integrated on the rotary drive adapter plate 1-9. The electric cylinder driver 1-2 and the motor driver 1-4 are electrically connected to the preloaded electric cylinder 1-1 and the hub motor 1-3 respectively, which makes the structure more compact and convenient for debugging and maintenance.

[0037] The large metal cylinder segment automatic centering vertical rotating mechanism also includes a control system 3, which includes a circle center adjustment module and a rotation module. The circle center adjustment module is used to control the operation of the preload mechanism, and the rotation module is used to control the operation of the rotation mechanism. The operation process of the control system 3 is as follows: Figure 5As shown, the barrel section workpiece is placed on the rotating support seat 2-4, and the preload electric cylinder 1-1 starts to run, driving the hub motor 1-3 to move so that the wheel pushes the barrel section workpiece to move. When the electric cylinder driver 1-2 detects that the preload motor current is greater than or equal to the target preload current value, the workpiece is in the specified position, that is, the three-point stuck position. At this time, the preload electric cylinder 1-1 torque mode is switched to maintain a suitable constant thrust output, thereby ensuring the stability of the center position of the barrel section workpiece. After that, the hub motor 1-3 starts to run, and the barrel section workpiece is driven to rotate through the static friction between the wheel surface and the inner wall of the barrel section workpiece. The barrel section workpiece can only rotate normally if the static friction f between the hub motor 1-3 is greater than the rolling friction it is subjected to. During the rotation of the barrel section workpiece, it is necessary to overcome the rolling friction f1 between the barrel section workpiece and the rotating support seat 2-4, the rolling friction f2 between the barrel section workpiece and the tapered roller bearing 2-2, and the rolling friction f3 between the wheel surface and the inner wall of the barrel section workpiece.

[0038] Among them, the thrust of the preload electric cylinder 1-1 has a greater influence in adjusting the position of the barrel section workpiece and driving the barrel section workpiece to rotate. When adjusting the position of the barrel section workpiece, the thrust fd1 needs to overcome the sliding friction between the barrel section workpiece and the rotating support seat 2-4. After it is in place, the magnitude of the thrust fd2 will directly affect the magnitude of the static friction. Only the appropriate magnitude of fd2 can ensure that the hub motor 1-3 drives the workpiece to rotate without slipping.

[0039] 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.

[0040] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical scheme of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A large metal cylinder segment automatic self-aligning vertical rotating mechanism, characterized in that: It includes an adjustment drive device and a support rolling device arranged on a workbench, the support rolling device includes a first support rolling mechanism and a second support rolling mechanism, the first support rolling mechanism is in rolling contact with the inner wall of the barrel section workpiece, the first support rolling mechanism includes two support rolling members arranged vertically and in parallel, the second support rolling mechanism is used to support the bottom of the barrel section workpiece, and the second support rolling mechanism includes a plurality of rotating support seats; The adjustment drive device includes a pre-tightening mechanism that moves in a linear direction and a rotating mechanism connected to the pre-tightening mechanism. When working, the rotating mechanism abuts against the inner wall of the barrel section workpiece under the drive of the pre-tightening mechanism and drives the barrel section workpiece to rotate. Taking the movement direction of the pre-tightening mechanism as the symmetry axis, the two supporting rolling elements and a plurality of the rotating supporting seats are symmetrically distributed on both sides of the symmetry axis on the workbench; When the barrel section workpiece is placed on the vertical rotating mechanism for centering, the bottom of the barrel section workpiece is first placed on the rotating support seat, and the preload mechanism drives the rotating mechanism to move in the direction away from the first supporting rolling mechanism until the two supporting rolling elements abut against the inner wall of the barrel section workpiece in a line contact manner, and the rotating mechanism abuts against the inner wall of the barrel section workpiece in a surface contact manner, and the above three contact positions are projected onto the workbench in the vertical direction to form a triangular structure, and the barrel section workpiece rotates around the geometric center axis of the barrel section workpiece under the rotational drive of the rotating mechanism.

2. According to claim 1, a large metal cylinder segment automatic centering vertical rotating mechanism is characterized by: The supporting rolling element comprises a supporting column and a plurality of tapered roller bearings. The plurality of tapered roller bearings are rotatably sleeved on the supporting column along the height direction of the supporting column. A bearing gasket is arranged between two adjacent tapered roller bearings.

3. According to claim 2, a large metal cylinder segment automatic centering vertical rotating mechanism is characterized in that: The support column is a cylindrical structure, and two support columns are symmetrically arranged on both sides of the symmetry axis. The distance between the two parallel support columns is 450-500mm, and the height of the support column is 1500-2500mm.

4. According to claim 3, a large metal cylinder segment automatic centering vertical rotating mechanism is characterized in that: A plurality of the rotating support seats are arranged on the workbench according to the diameter of the barrel section workpiece and are located outside the first supporting rolling mechanism; Several rotating support seats are respectively arranged in the first supporting area and the second supporting area on the workbench. Several rotating support seats arranged in the first supporting area are close to the two supporting columns, and several rotating support seats arranged in the second supporting area are located in the extension direction of the pre-tightening mechanism.

5. According to claim 4, a large metal cylinder segment automatic centering vertical rotating mechanism is characterized in that: The number of the plurality of rotating support seats is an odd number, an odd number of the rotating support seats are arranged in the first supporting area, and an even number of the rotating support seats are arranged in the second supporting area; Wherein, one of the rotating support seats in the first supporting area is distributed on the axis of the symmetry axis and is arranged parallel to the axis of the symmetry axis; An even number of the rotating support seats in the first supporting area and the second supporting area are symmetrically distributed on both sides of the axis of the symmetry axis.

6. According to claim 5, a large metal cylinder segment automatic centering vertical rotating mechanism is characterized in that: The rotating support seat comprises a roller housing, the roller housing is mounted on a roller shaft via a deep groove ball bearing sleeve, the roller shaft is mounted on a roller bracket via an end cover, and the roller bracket is detachably mounted on the workbench via a mounting flange.

7. The large metal cylinder segment automatic centering vertical rotating mechanism according to claim 6 is characterized by: The projections of the axes of the roller shafts included in the even number of the rotating support seats in the first supporting area and the second supporting area on the workbench form an angle with the axis of the symmetry axis.

8. According to claim 1, a large metal cylinder segment automatic centering vertical rotating mechanism is characterized by: The pre-tightening mechanism comprises a pre-tightening electric cylinder, a fixed end of the pre-tightening electric cylinder is mounted on the workbench through a connecting piece, and a telescopic end of the pre-tightening electric cylinder is connected to the rotating mechanism.

9. The large metal cylinder segment automatic centering vertical rotating mechanism according to claim 8, characterized in that: The rotating mechanism comprises a wheel hub motor, and the wheel hub motor is connected to the telescopic end of the preload electric cylinder through a motor adapter plate and a fixed pin shaft.

10. The large metal cylinder segment automatic centering vertical rotating mechanism according to claim 9, characterized in that: A sliding mechanism is also provided between the rotating mechanism and the workbench. The sliding mechanism comprises a slider and a guide rail for linear sliding of the slider. The slider is mounted on the motor adapter plate, and the guide rail is arranged on the workbench through the guide rail adapter plate.

Images