Turning and positioning device and method for large ring pieces

Abstract

The application discloses a large ring piece overturning and position changing device and method, wherein during the overturning and position changing process, the terminal platform is first driven to rotate more than 90 degrees and then kept still, then the initial platform is driven to rotate to butt against the terminal platform, then the terminal platform and the initial platform are driven to rotate together, during the process of rotating together, the center of gravity of the large ring piece is smoothly transferred from the initial platform to the terminal platform, after the large ring piece is stably supported and positioned on the terminal platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the terminal platform continues to rotate in the opposite direction to complete 180-degree overturning and position changing. The whole overturning and position changing process does not need to clamp and position the large ring piece, the overturning and position changing are realized through the smooth transfer of the center of gravity of the workpiece during the process of rotating together of the two supporting platforms, the operation is simple, convenient and reliable, the risk of the inclined draw crane is completely eliminated, the deformation risk caused by clamping during the overturning process is avoided, and therefore the large ring piece can be smoothly overturned and changed in position without clamping and deformation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of turning over operation of large ring pieces, in particular to a turning over and position changing device for large ring pieces, and also relates to a turning over and position changing method using the above-mentioned turning over and position changing device. BACKGROUND

[0002] In the engineering field, large ring pieces are increasingly widely used, and the demand for turning over and position changing in production and application is growing. Large ring pieces have the characteristics of super large size and super large weight, and the turning over and position changing schemes in the industry are mainly through overhead turning over and position changing, ground rolling turning over and position changing, or mechanical turning over. Among them, overhead turning over is to lift the workpiece as a whole and suspend it, and the attitude of the workpiece is changed in the air through the cooperation between the main hook and the auxiliary hook of the crane or between multiple cranes, which involves the conversion of multiple crane lifting points, has the risk of inclined crane, and the crane control is complex and slow, and part of the large size ring pieces have the risk of deformation in the lifting process. Ground rolling turning is to install the workpiece itself or the corresponding special tooling on the workpiece as a fulcrum, and the workpiece rotates around the fulcrum under the action of the crane to realize the turning over and position changing of the workpiece, which also involves the inclination of the crane, and has the disadvantages of complex and slow control, workpiece deformation, and the risk of damaging the workpiece and the ground. The existing mechanical turning over can realize the turning over operation, but it can only adapt to single variety, small diameter and poor precision parts.

[0003] Therefore, how to improve the turning over and position changing operation of large ring pieces to make it more convenient and fast, and more safe and reliable to realize the turning over and position changing of large ring pieces has become a problem to be solved. SUMMARY

[0004] The present application provides a turning over and position changing device and method for large ring pieces to solve the technical problems of easy deformation of ring pieces and complex and slow operation when turning over and position changing large ring pieces in the prior art.

[0005] According to one aspect of the present application, a turning over and position changing device for large ring pieces is provided, which comprises a base, a first support platform, a second support platform, a first driving mechanism and a second driving mechanism. The first support platform and the second support platform are both hinged to the base and used for supporting and positioning the large ring pieces during the turning over and position changing, and the distance between the two hinged axes is kept at a preset distance. The first driving mechanism is used for driving the first support platform to rotate, and the second driving mechanism is used for driving the second support platform to rotate.

[0006] When the large ring is turned over and displaced, one of the first support platform and the second support platform is selected as an initial platform and the other is selected as a terminal platform, after the large ring is hoisted to the initial platform and positioned, the terminal platform is first driven to rotate more than 90 degrees and then kept still, then the initial platform is driven to rotate, after the initial platform is rotated to be connected with the terminal platform, the terminal platform is driven to rotate in the opposite direction to realize rotation with the initial platform, during the rotation, the center of gravity of the large ring is transferred from the initial platform to the terminal platform, after the large ring is positioned on the terminal platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the terminal platform is driven to continue to rotate in the opposite direction to the initial position to complete the 180° turning over and displacement of the large ring.

[0007] Further, the first support platform is provided with a first rotating support assembly, a second rotating support assembly, a third rotating support assembly and a fourth rotating support assembly for axially supporting and radially limiting the large ring, the four rotating support assemblies are the same in structure and are diagonally distributed, each rotating support assembly is rotatably installed on the first support platform, and each rotating support assembly comprises at least two working surfaces, each working surface is used for supporting and limiting at least one specification and size of the large ring, and different specification and size of the large ring can be adapted to the supporting and positioning requirements by controlling the rotation of the rotating support assembly.

[0008] Further, the rotating support assembly comprises a bearing seat, a rotating support piece, a mounting seat and a rotating driving piece, shaft holes are formed at two ends of the rotating support piece, shafts are fixedly installed in the shaft holes, one end of the shaft is rotatably installed on the bearing seat, and the other end of the shaft is fixedly connected with the output end of the rotating driving piece, the rotating driving piece is installed on the mounting seat, and the rotating support piece is driven to rotate by the rotating driving piece to realize selection and adaptation of the working surface according to the workpiece to be turned over.

[0009] Further, the rotating support piece comprises three working surfaces and an adaptation surface, different diameter and height stepped surfaces are arranged on each working surface, the stepped surfaces are used for axially supporting the large ring and radially limiting the large ring by the bottom surface, and the adaptation surface is used for supporting and positioning the large ring of different diameter and thickness, the adaptation surface is used for ensuring that the center of gravity of each rotating support piece is located on the rotation axis to prevent the large ring from being subjected to eccentric load during the turning over and displacement.

[0010] Further, the first support platform is further provided with a fifth rotating support assembly, the fifth rotating support assembly is arranged between the center of the first support platform and the rotation axis and is perpendicular to the rotation axis in the arrangement direction, and is used for improving the stability of radial limitation when the turning over angle of the first support platform exceeds a preset value.

[0011] Further, the second support platform is provided with a first fixed support assembly, a second fixed support assembly, a first adjustable support assembly and a second adjustable support assembly for axially supporting the large ring, the four support assemblies are diagonally distributed and fixedly installed on the second support platform, wherein the first adjustable support assembly and the second adjustable support assembly are arranged close to the rotation axis, and the support surfaces of the two are provided with a fixed limiting piece and at least two telescopic limiting pieces, the fixed limiting piece is arranged at one end of the first adjustable support assembly and the second adjustable support assembly away from the center of the second support platform, and the at least two telescopic limiting pieces are arranged at intervals, and the fixed limiting piece or the corresponding telescopic limiting piece can be selected to protrude according to the size of the large ring, and the large ring is radially limited by the fixed limiting piece or the telescopic limiting piece.

[0012] Further, the second support platform is further provided with a third adjustable support assembly, the third adjustable support assembly is arranged between the center of the second support platform and the rotation axis, and the arrangement direction is perpendicular to the rotation axis, and the structure of the third adjustable support assembly is the same as that of the first adjustable support assembly and the second adjustable support assembly, for improving the stability of radial limiting when the overturning angle of the second support platform exceeds the preset value.

[0013] Further, a controller, a first detection element and a second detection element are further included, the first detection element is used for detecting the rotation angle of the first support platform, the second detection element is used for detecting the rotation angle of the second support platform, and the controller is electrically connected with the first detection element, the second detection element, the first driving mechanism and the second driving mechanism, and is used for controlling the first driving mechanism and the second driving mechanism to stop working when the first detection element and / or the second detection element detects that the rotation angle of the corresponding support platform is abnormal.

[0014] In addition, the application also provides a large ring overturning and position changing method, which adopts the overturning and position changing device as described above, and includes the following contents.

[0015] One of the first support platform and the second support platform is selected as an initial platform, and the other is selected as a terminal platform, and the large ring is hoisted to the initial platform to complete the support positioning;

[0016] The terminal platform is driven to rotate more than 90° and then remains stationary;

[0017] The initial platform is driven to rotate, and after the initial platform rotates to butt joint with the terminal platform, the terminal platform is driven to rotate in the opposite direction to realize the rotation accompanying with the initial platform, and in the process of the accompanying rotation, the center of gravity of the large ring is transferred from the initial platform to the terminal platform;

[0018] After the large ring is stably supported and positioned on the termination platform, the initial platform is driven to rotate in the reverse direction to the initial position, and the termination platform is continuously driven to rotate in the reverse direction to the initial position to complete the 180° overturning and position changing of the large ring.

[0019] Further, before hoisting the large ring, the following is included:

[0020] According to the size of the large ring to be overturned, the four rotating support assemblies on the first support platform are controlled to rotate, and the corresponding telescopic limiters on the second support platform are controlled to extend, so as to adjust the first support platform and the second support platform to a state suitable for the support and positioning requirements of the large ring to be overturned.

[0021] The present application has the following effects:

[0022] The overturning and position changing device for the large ring can randomly select one of the two support platforms as the initial platform and the other as the termination platform during the 180° overturning and position changing of the large ring, so that ±180° overturning and position changing can be achieved. During the overturning and position changing process, the termination platform is first driven to rotate more than 90° and then remains stationary, and then the initial platform is driven to rotate. After the initial platform is rotated to be connected with the termination platform, the termination platform is driven to rotate in the reverse direction to realize rotation with the initial platform. During the rotation with the initial platform, the center of gravity of the large ring is smoothly transferred from the initial platform to the termination platform. After the large ring is stably supported and positioned on the termination platform, the initial platform is driven to rotate in the reverse direction to the initial position, and the termination platform is continuously driven to rotate in the reverse direction to the initial position to complete the 180° overturning and position changing of the large ring. The entire overturning and positioning process does not require clamping and positioning of the large ring. Only the large ring needs to be hoisted onto one of the support platforms using a crane. The subsequent overturning and position changing process no longer involves crane operations, but realizes overturning and position changing through the smooth transfer of the center of gravity of the workpiece during the rotation with the two support platforms. The overturning and position changing operation is simple, convenient and reliable, completely eliminates the risk of the inclined draw-in crane, and avoids the risk of deformation during overturning due to clamping, thereby achieving smooth overturning and position changing of the large ring without clamping and deformation.

[0023] In addition, the positioning stability and reliability of the large ring during the overturning and position changing process can be ensured by arranging four rotating support assemblies in a diagonal distribution on the first support platform to axially support and radially limit the large ring, and each rotating support assembly comprises at least two working surfaces, and each working surface can axially support and radially limit at least one specification size of the large ring, so that the versatility of the overturning and position changing device is greatly improved, and the adjustment operation is very convenient.

[0024] In addition, the versatility of the overturning and position changing device is further improved by arranging three working surfaces and an adaptive surface on the rotating support, and each working surface is provided with stepped surfaces of different diameters and different heights, which can be adapted to large rings of different diameters and different thicknesses, and by reserving one surface as an adaptive surface, the specific structure design of the adaptive surface is determined after the three working surfaces are machined to dynamically balance the rotating support, so that the center of gravity of the rotating support is located on the rotation axis, preventing the rotating support from deflecting due to the center of gravity deviating from the rotation axis, thereby causing the large ring to be subjected to eccentric load and affecting the positioning stability of the large ring during the overturning and position changing process, and further ensuring that the large ring overturning operation is stable.

[0025] In addition, the versatility of the overturning and position changing device is greatly improved by adopting the cooperation of fixed limiting and telescopic limiting on the second support platform to radially limit the large ring, and the fixed limiting piece or the telescopic limiting piece can be flexibly selected according to different specifications and sizes of the large ring, which can be adapted to the support and positioning of large rings of various specifications and sizes.

[0026] In addition, the overturning and position changing method of the large ring of the present application also has the above advantages.

[0027] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate the preferred embodiments of the application and assist in the explanation of the application. In the drawings:

[0029] Figure 1 is a structural schematic view of the overturning and position changing device of the large ring of the preferred embodiment of the present application.

[0030] Figure 2 is a structural schematic view of the base of the preferred embodiment of the present application.

[0031] Figure 3 is a structural schematic diagram of a first support platform of a preferred embodiment of the present application.

[0032] Figure 4 is a structural schematic diagram of a second support platform of a preferred embodiment of the present application.

[0033] Figure 5 is a structural schematic diagram of a rotating support of a preferred embodiment of the present application.

[0034] Figure 6 is a cross-sectional schematic diagram of a rotating support of a preferred embodiment of the present application from a first perspective.

[0035] Figure 7 is a cross-sectional schematic diagram of a rotating support of a preferred embodiment of the present application from a second perspective.

[0036] Figure 8 is a cross-sectional schematic diagram of a support surface of a fixed support assembly of a preferred embodiment of the present application with a groove laid thereon.

[0037] Figure 9 is a schematic diagram of a 180° overturning and position changing of a large ring in a preferred embodiment of the present application, wherein a represents a state schematic diagram when the rotating support assembly and the adjustable support assembly are adjusted according to the workpiece to be overturned, b represents a state schematic diagram when the workpiece to be overturned is hoisted to the first support platform, c represents a state schematic diagram when the second support platform is driven to rotate to a receiving position, d represents a state schematic diagram when the first support platform is driven to rotate to the receiving position and rotates with the second support platform and completes the center of gravity transfer, e represents a state schematic diagram when the first support platform stops rotating and the second support platform supports the workpiece to fall back, f represents a state schematic diagram when the second support platform supports the workpiece to fall back to the initial position, and g represents a state schematic diagram when the first support platform falls back to the initial position. BRIEF DESCRIPTION OF DRAWINGS

[0039] 1, base; 2, first support platform; 3, second support platform; 11, hinged seat; 21, first rotating support assembly; 22, second rotating support assembly; 23, third rotating support assembly; 24, fourth rotating support assembly; 25, bearing seat; 26, rotating support; 27, mounting seat; 28, rotating driving member; 29, fifth rotating support assembly; 31, first fixed support assembly; 32, second fixed support assembly; 33, first adjustable support assembly; 34, second adjustable support assembly; 35, fixed limiting member; 36, telescopic limiting member; 37, third adjustable support assembly. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below with reference to the accompanying drawings, but the present application can be implemented in various different manners as defined and covered by the following.

[0041] It can be understood that, as shown in Figures 1 to 9 The preferred embodiment of the present application provides a large ring piece overturning and positioning device for 180° overturning and positioning of a large ring piece, which specifically comprises a base 1, a first support platform 2, a second support platform 3, a first driving mechanism and a second driving mechanism. The first support platform 2 and the second support platform 3 are both hinged to the base 1, specifically connected to the base 1 through fixed hinge shafts, for supporting and positioning the large ring piece during overturning and positioning, and the distance L between the two hinge shafts is fixed. The first driving mechanism is used to drive the first support platform 2 to rotate, and the second driving mechanism is used to drive the second support platform 3 to rotate. Specifically, the fixed ends of the first driving mechanism and the second driving mechanism are hinged to the base 1, and the movable ends are hinged to the first support platform 2 and the second support platform 3, respectively. The first support platform 2 and the second support platform 3 can be driven to rotate through the extension and retraction of the first driving mechanism and the second driving mechanism. The first driving mechanism and the second driving mechanism can be hydraulic cylinders, electric telescopic rods or linear motors, and preferably hydraulic cylinders. In the initial state, the first support platform 2 and the second support platform 3 are both in a horizontal state. It can be understood that, when overturning and positioning the large ring piece, one of the first support platform 2 and the second support platform 3 can be selected as the initial platform, and the other as the termination platform, so that ±180° overturning and positioning can be achieved. After the large ring piece is hoisted onto the initial platform and is supported and positioned, the termination platform is first driven to rotate more than 90° and then remains stationary, i.e., it is rotated to a receiving position, which is generally between 91° and 120°, such as 95°, 100°, 110°, etc. Then the initial platform is driven to rotate, and after the initial platform is rotated to be in abutment with the termination platform, the termination platform is driven to rotate in the opposite direction to achieve rotation with the initial platform. During the rotation, the center of gravity of the large ring piece is transferred from the initial platform to the termination platform. After the large ring piece is stably supported and positioned on the termination platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the termination platform is driven to continue rotating in the opposite direction to the initial position to complete the 180° overturning and positioning of the large ring piece. The opposite direction refers to the direction opposite to the initial rotation direction, for example, if the initial rotation direction of the first support platform 2 is clockwise rotation, then the opposite direction is counterclockwise rotation. In addition, for ease of explanation, the left first support platform 2 is selected as the initial platform, and the right second support platform 3 is selected as the termination platform, and the specific selection is not limited.

[0042] It can be understood that the overturning and positioning device of the large ring piece in the embodiment can realize ±180° overturning and positioning by setting two rotatable support platforms on the base 1 and driving the two support platforms to rotate by two driving mechanisms, and randomly selecting one of the two support platforms as an initial platform and the other as a terminal platform. In the overturning and positioning process, the terminal platform is first driven to rotate more than 90° and then remains stationary, and then the initial platform is driven to rotate. When the initial platform rotates to the interface with the terminal platform, the terminal platform is driven to rotate in the opposite direction to realize rotation with the initial platform. In the process of rotation with the initial platform, the center of gravity of the large ring piece is smoothly transferred from the initial platform to the terminal platform. After the large ring piece is stably supported and positioned on the terminal platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the terminal platform is driven to continue to rotate in the opposite direction to the initial position to complete the 180° overturning and positioning of the large ring piece. The entire overturning and positioning process does not require clamping and positioning of the large ring piece. Only the large ring piece needs to be hoisted onto one of the support platforms by a crane. The subsequent overturning and positioning process no longer involves crane operation, but realizes overturning and positioning through the smooth transfer of the center of gravity of the workpiece in the process of rotation with the two support platforms. The overturning and positioning operation is simple, convenient and reliable, completely eliminates the risk of the inclined draw-in crane, and avoids the risk of deformation caused by clamping during overturning, thereby realizing the smooth overturning and positioning of the large ring piece without clamping and deformation.

[0043] It can be understood that the base 1 is a frame structure, which is beneficial to reduce the weight for easy transportation. The middle part of the base 1 is provided with two hinge seats 11 spaced apart along the width direction. Two shaft holes are arranged side by side on each hinge seat 11, and the distance between the shaft holes is L. The right end of the first support platform 2 is connected to the left shaft holes of the two hinge seats 11 through a hinge shaft, and the left end of the second support platform 3 is connected to the right shaft holes of the two hinge seats 11 through a hinge shaft. The two support platforms can rotate relative to the base 1. Of course, in other embodiments of the application, only one hinge seat 11 can be provided on the base 1.

[0044] Optionally, the first support platform 2 is provided with a first rotating support assembly 21, a second rotating support assembly 22, a third rotating support assembly 23 and a fourth rotating support assembly 24 for axially supporting and radially limiting the large ring, the four rotating support assemblies are the same in structure and diagonally distributed, so that the large ring can be stably and reliably axially supported and radially limited. For example, a plane coordinate system is established at the center of the upper surface of the first support platform 2, the first rotating support assembly 21 is located in the first quadrant, the second rotating support assembly 22 is located in the second quadrant, the third rotating support assembly 23 is located in the third quadrant, and the fourth rotating support assembly 24 is located in the fourth quadrant, and the first rotating support assembly 21 is collinear with the third rotating support assembly 23, and the second rotating support assembly 22 is collinear with the fourth rotating support assembly 24. Each rotating support assembly is rotatably mounted on the first support platform 2, and each rotating support assembly comprises at least two working surfaces, each working surface being used for axially supporting and radially limiting at least one size of large ring, and by controlling the rotation of the rotating support assembly, the support and positioning requirements of large rings of different sizes can be adapted.

[0045] It can be understood that, by providing four rotating support assemblies diagonally distributed on the first support platform 2 for axially supporting and radially limiting the large ring, the positioning stability and reliability of the large ring during the turning and positioning process can be ensured, and each rotating support assembly comprises at least two working surfaces, and each working surface can axially support and radially limit at least one size of large ring, so that the rotating support assembly only needs to be driven to rotate to the corresponding working surface according to the size of the large ring to be turned, greatly improving the versatility of the turning and positioning device, and the adjustment operation is very convenient.

[0046] Each rotating support assembly comprises a bearing seat 25, a rotating support 26, a mounting seat 27 and a rotating drive 28, both ends of the rotating support 26 are provided with shaft holes, and shafts are fixedly installed in the shaft holes, one end of the shaft is rotatably installed on the bearing seat 25, and the other end of the shaft is fixedly connected with the output end of the rotating drive 28, the rotating drive 28 is installed on the mounting seat 27, and the rotating support 26 is driven to rotate by the rotating drive 28, so as to select and adapt the working surface according to the workpiece to be turned. The rotating drive 28 can be a motor or a hydraulic motor, and a motor is preferably used for easy control and installation.

[0047] Optionally, the rotating support 26 comprises three working surfaces and an adapting surface, each working surface is provided with stepped surfaces with different diameters and different heights, the bottom surface of the stepped surface axially supports the large ring, and the side surface of the stepped surface radially limits the large ring, so as to adapt to the support and positioning of large rings with different diameters and different thicknesses. The adapting surface is used to ensure that the center of gravity of each rotating support 26 is located on its rotation axis, preventing the large ring from being subjected to eccentric load during the overturning and positioning process. The specific structure of the adapting surface is determined after the three working surfaces are machined, and the rotating support 26 is dynamically balanced. The diameter of the stepped surface refers to the distance from the center of the first support platform 2, which matches the diameter of the large ring to be overturned.

[0048] It can be understood that, by providing three working surfaces and an adapting surface on the rotating support 26, each working surface is provided with stepped surfaces with different diameters and different heights, which can adapt to large rings with different diameters and different thicknesses, thereby further improving the versatility of the overturning and positioning device. In addition, by reserving one surface as an adapting surface, the specific structure of the adapting surface is determined after the three working surfaces are machined, and the rotating support 26 is dynamically balanced to ensure that the center of gravity of the rotating support 26 is located on its rotation axis, preventing the rotating support 26 from being subjected to eccentric load due to the center of gravity deviating from the rotation axis, thereby causing the large ring to be subjected to eccentric load, affecting the positioning stability of the large ring during the overturning and positioning process, and further ensuring that the large ring overturning operation is stable.

[0049] As preferred, the first supporting platform 2 is further provided with a fifth rotating supporting assembly 29, which has substantially the same structure as the other four rotating supporting assemblies, is arranged between the center of the first supporting platform 2 and the rotating axis thereof, and is arranged in a direction perpendicular to the rotating axis, i.e. on the central axis of the first supporting platform 2 in the length direction, between the first rotating supporting assembly 21 and the fourth rotating supporting assembly 24, and is used to improve the stability of the radial limiting when the turning angle of the first supporting platform 2 exceeds a preset value. Since the large ring is not clamped and positioned, and in order to avoid the deformation of the large ring, the stepped surface only plays a role of radial limiting, but not radial clamping and fixing. When the first supporting platform 2 is turned to a large angle, for example, 60°, 70° or 80°, the large ring tends to slide towards the rotating axis direction of the first supporting platform 2 under the action of its own gravity, i.e. tends to slide to the right. The weight of the large ring is mostly borne by the first rotating supporting assembly 21 in the first quadrant and the fourth rotating supporting assembly 24 in the fourth quadrant. At this time, by adding a fifth rotating supporting assembly 29 between the first rotating supporting assembly 21 and the fourth rotating supporting assembly 24, the outer ring of the large ring can be supported by three points. Especially when the first supporting platform 2 is turned to 90°, the weight of the large ring is mostly borne by the fifth rotating supporting assembly 29, and the first rotating supporting assembly 21 and the fourth rotating supporting assembly 24 play a role of auxiliary bearing, further improving the stability of the radial limiting, preventing the large ring from being subjected to eccentric load when being turned to a vertical state, and ensuring that the center of gravity of the large ring can be smoothly transferred from the first supporting platform 2 to the second supporting platform 3 during the turning process of the two supporting platforms.

[0050] Optionally, the second support platform 3 is provided with a first fixed support assembly 31, a second fixed support assembly 32, a first adjustable support assembly 33 and a second adjustable support assembly 34 for axially supporting the large ring, the four support assemblies are diagonally distributed and fixedly installed on the second support platform 3, wherein the first adjustable support assembly 33 and the second adjustable support assembly 34 are arranged close to the rotation axis, and the first fixed support assembly 31 and the second fixed support assembly 32 are arranged away from the rotation axis. For example, a plane coordinate system is constructed at the center of the upper surface of the second support platform 3, the first fixed support assembly 31 is located in the first quadrant, the first adjustable support assembly 33 is located in the second quadrant, the second adjustable support assembly 34 is located in the third quadrant, the second fixed support assembly 32 is located in the fourth quadrant, and the first fixed support assembly 31 is collinear with the second adjustable support assembly 34, and the first adjustable support assembly 33 is collinear with the second fixed support assembly 32. The support surface of the first adjustable support assembly 33 and the second adjustable support assembly 34 is provided with a fixed limiting piece 35 and at least two telescopic limiting pieces 36, wherein a hydraulic cylinder, a linear motor or an electric telescopic rod is arranged below each telescopic limiting piece 36, preferably a hydraulic cylinder, the telescopic limiting piece 36 is driven to extend or retract by the hydraulic cylinder, the fixed limiting piece 35 is arranged at the distal end of the first adjustable support assembly 33 and the second adjustable support assembly 34, i.e. the end away from the center of the second support platform 3, and the at least two telescopic limiting pieces 36 are arranged at intervals along the length direction of the support assembly, i.e. from the distal end to the proximal end, the position of the fixed limiting piece 35 is adapted to the large ring with the largest size, and the telescopic limiting pieces 36 at different positions are adapted to large rings with different specifications, so that the fixed limiting piece 35 or the corresponding telescopic limiting piece 36 can be selected to extend according to the specification of the large ring to be turned over, and the large ring is radially limited by the fixed limiting piece 35 or the telescopic limiting piece 36.

[0051] It can be understood that the present application can radially limit the large ring by cooperating the fixed limiting piece 35 and the telescopic limiting piece 36 on the second support platform 3, and the fixed limiting piece 35 or the corresponding telescopic limiting piece 36 can be selected to extend according to the large ring with different specifications, which can be adapted to the support and positioning of large rings with multiple specifications, greatly improving the versatility of the turning and shifting device.

[0052] Optionally, the second support platform 3 is also provided with a third adjustable support assembly 37, which is arranged between the center of the second support platform 3 and the rotation axis thereof, and the arrangement direction is perpendicular to the rotation axis, i.e. on the central axis of the second support platform 3 in the length direction, between the first adjustable support assembly 33 and the second adjustable support assembly 34. The structure of the third adjustable support assembly 37 is the same as that of the first adjustable support assembly 33 and the second adjustable support assembly 34, which is used to improve the stability of the radial limiting when the rotation angle of the second support platform 3 exceeds the preset value. Since the large ring is not clamped and positioned, and in order to avoid deformation of the large ring, the fixed limiting piece 35 and the telescopic limiting piece 36 only play a role in radial limiting, but not in radial clamping and fixing. When the large ring is smoothly transferred from the first support platform 2 to the second support platform 3, at this time the rotation angle of the second support platform 3 is close to 90°, the large ring tends to slide close to the rotation axis direction of the second support platform 3 under the action of its own gravity, i.e. tends to slide to the left. At this time, the weight of the large ring is mostly borne by the first adjustable support assembly 33 in the second quadrant and the second adjustable support assembly 34 in the third quadrant. At this time, by increasing a third adjustable support assembly 37 between the first adjustable support assembly 33 and the second adjustable support assembly 34, three-point support of the outer ring of the large ring can be realized. The weight of the large ring is mostly borne by the fixed limiting piece 35 of the third adjustable support assembly 37, and the fixed limiting pieces 35 of the first adjustable support assembly 33 and the second adjustable support assembly 34 play a role in auxiliary bearing, further improving the stability of the radial limiting, preventing the large ring from being subjected to eccentric load when rotating to a near-vertical state, and ensuring that the center of gravity of the large ring can be smoothly transferred from the first support platform 2 to the second support platform 3 during the rotation of the two support platforms.

[0053] Optionally, a plurality of grooves of different sizes are machined on the support surface of the support assembly of the second support platform 3, so as to match the protruding features on the surface of some large rings. When the large ring is placed on the support assembly, the protruding features are matched with the grooves, so as to ensure that large-area contact is realized when the workpiece is supported, and the reliability of the axial support and the radial limiting is further improved.

[0054] Optionally, the turnover displacement device further comprises a controller, a first detection element and a second detection element, the first detection element is used for detecting the rotation angle of the first support platform 2, the second detection element is used for detecting the rotation angle of the second support platform 3, and the controller is electrically connected with the first detection element, the second detection element, the first driving mechanism and the second driving mechanism respectively, and is used for controlling the first driving mechanism and the second driving mechanism to stop working when the first detection element and / or the second detection element detects that the rotation angle of the corresponding support platform is abnormal. The first detection element and the second detection element can adopt a rotary encoder installed on the hinge shaft of the support platform, or an inclination sensor installed on the support platform, or a displacement sensor installed on the driving mechanism, so as to indirectly detect the rotation angle of the support platform by detecting the telescopic displacement of the driving mechanism. During the turnover operation, when the first detection element and / or the second detection element detects that the rotation angle of the corresponding support platform is abnormal, for example, the second support platform 3 is kept stationary without exceeding 90° at the beginning of rotation, or the rotation angle of the first support platform 2 accompanying the rotation of the second support platform 3 is not within the preset range, that is, the accompanying rotation angle is too small or too large, the controller controls the first driving mechanism and the second driving mechanism to stop working, so as to prevent the large ring from being subjected to large amplitude offloading or even falling during the turnover displacement process, and the safety of the turnover displacement operation of the large ring is ensured by monitoring the turnover operation state through the first detection element and the second detection element. In addition, the controller is electrically connected with the rotary driving piece 28 and the driving piece of the telescopic limiting piece 36, so as to control the rotation operation of the rotary support assembly and the telescopic action of the telescopic limiting piece 36, and the rotary support assembly can be rotated to the adaptive working surface according to the size of the large ring to be turned over, and the corresponding telescopic limiting piece 36 is controlled to extend, so as to realize one-key turnover displacement operation.

[0055] It can be understood that the turnover displacement process of the large ring of the present application is as follows: first, the rotary support assembly and the adjustable support assembly are automatically adjusted according to the size of the workpiece to be turned over, so as to adapt the two support platforms to the workpiece to be turned over, thereby realizing axial support and radial limiting. Then, the workpiece to be turned over is hoisted to the first support platform 2, and then the second support platform 3 is driven to rotate more than 90° and then kept stationary, waiting for the workpiece to be turned over. Then, the first support platform 2 is driven to rotate to the receiving position, at this time, the second support platform 3 is driven to rotate in the opposite direction, and the first support platform 2 is driven to rotate in the opposite direction, thereby completing the workpiece gravity transfer. Then, the first support platform 2 is controlled to stop rotating, and the second support platform 3 continues to rotate in the opposite direction to the initial position, thereby completing the 180° turnover displacement of the workpiece to be turned over, and then the first support platform 2 is controlled to rotate in the opposite direction to the initial position. After completion, the turned-over workpiece is hoisted away.

[0056] In addition, another embodiment of the present application also provides a method for overturning and repositioning a large ring, preferably using the overturning and repositioning device described above, which comprises the following steps:

[0057] One of the first support platform 2 and the second support platform 3 is selected as an initial platform, and the other is selected as a terminal platform, and the large ring is hoisted to the initial platform to complete the support positioning;

[0058] The terminal platform is driven to rotate more than 90° and then remains stationary;

[0059] The initial platform is driven to rotate, and after the initial platform is rotated to be in abutment with the terminal platform, the terminal platform is driven to rotate in the opposite direction to realize the accompanied rotation with the initial platform, and during the accompanied rotation, the center of gravity of the large ring is smoothly transferred from the initial platform to the terminal platform;

[0060] After the large ring is stably supported and positioned on the terminal platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the terminal platform is continuously driven to rotate in the opposite direction to the initial position to complete the 180° overturning and repositioning of the large ring.

[0061] It can be understood that the overturning and repositioning method of the large ring in the present embodiment comprises the following steps: two support platforms that can rotate relative to each other are arranged on the base 1, and two driving mechanisms are arranged to drive the two support platforms to rotate, and during the 180° overturning and repositioning of the large ring, one of the two support platforms can be selected as an initial platform, and the other is selected as a terminal platform, so that ±180° overturning and repositioning can be realized. During the overturning and repositioning, the terminal platform is first driven to rotate more than 90° and then remains stationary, and then the initial platform is driven to rotate, and after the initial platform is rotated to be in abutment with the terminal platform, the terminal platform is driven to rotate in the opposite direction to realize the accompanied rotation with the initial platform, and during the accompanied rotation, the center of gravity of the large ring is smoothly transferred from the initial platform to the terminal platform, and after the large ring is stably supported and positioned on the terminal platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the terminal platform is continuously driven to rotate in the opposite direction to the initial position to complete the 180° overturning and repositioning of the large ring. The entire overturning and positioning process does not require clamping and positioning of the large ring, and only needs to use a crane to hoist the large ring to one of the support platforms, and the subsequent overturning and repositioning process no longer involves crane operation, but realizes overturning and repositioning through the smooth transfer of the center of gravity of the workpiece during the accompanied rotation of the two support platforms. The overturning and repositioning operation is simple, convenient and reliable, completely eliminates the risk of the inclined draw-in crane, and because the large ring is not clamped and positioned during the overturning and repositioning process, the risk of deformation during overturning is avoided, so that the large ring can be smoothly overturned and repositioned without clamping and deformation.

[0062] Optionally, before hoisting the large ring, the following steps are further included:

[0063] According to the size of the large ring to be turned over, the four rotating support assemblies on the first support platform 2 are controlled to rotate, and the corresponding telescopic limiters 36 on the second support platform 3 are controlled to extend, so that the first support platform 2 and the second support platform 3 are adjusted to a state suitable for the support and positioning requirements of the large ring to be turned over.

[0064] Optionally, during the turning operation, the following is further included:

[0065] The rotation angles of the two support platforms are detected, and when it is detected that the rotation angle of at least one support platform is abnormal, the first driving mechanism and the second driving mechanism are controlled to stop working.

[0066] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for turning and displacing a large ring, characterized in that The device comprises a base (1), a first support platform (2), a second support platform (3), a first driving mechanism and a second driving mechanism, the first support platform (2) and the second support platform (3) are hinged to the base (1) and used for supporting and positioning a large ring during turnover repositioning, and a preset distance is kept between the two hinged axes, the first driving mechanism is used for driving the first support platform (2) to rotate, and the second driving mechanism is used for driving the second support platform (3) to rotate. During turnover repositioning of the large ring, one of the first support platform (2) and the second support platform (3) is selected as an initial platform, and the other is selected as a terminal platform, after the large ring is hoisted to the initial platform to complete the supporting and positioning, the terminal platform is first driven to rotate more than 90° and then kept stationary, and then the initial platform is driven to rotate, after the initial platform is rotated to be connected with the terminal platform, the terminal platform is driven to rotate in the opposite direction to realize the rotation with the initial platform, during the rotation, the center of gravity of the large ring is transferred from the initial platform to the terminal platform, after the large ring is stably supported and positioned on the terminal platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the terminal platform is driven to continue rotating in the opposite direction to the initial position to complete the 180° turnover repositioning of the large ring. The first support platform (2) is provided with a first rotating support assembly (21), a second rotating support assembly (22), a third rotating support assembly (23) and a fourth rotating support assembly (24) for axially supporting and radially limiting the large ring, the four rotating support assemblies are the same in structure and are diagonally distributed to stably and reliably axially support and radially limit the large ring, each rotating support assembly is rotatably installed on the first support platform (2), and each rotating support assembly comprises at least two working surfaces, each working surface is used for supporting and limiting at least one large ring of different specifications and sizes, and the rotating support assembly is controlled to rotate to adapt to the supporting and positioning requirements of large rings of different specifications and sizes.

2. A device for turning and displacing large rings according to claim 1, characterised in that The rotating support assembly comprises a bearing seat (25), a rotating support piece (26), a mounting seat (27) and a rotating driving piece (28), shaft holes are formed in both ends of the rotating support piece (26), shafts are fixedly installed in the shaft holes, one end of the shaft is rotatably installed on the bearing seat (25), the other end of the shaft is fixedly connected with the output end of the rotating driving piece (28), the rotating driving piece (28) is installed on the mounting seat (27), and the rotating support piece (26) is driven to rotate by the rotating driving piece (28) to realize selection and adaptation of the working surface according to the workpiece to be turned over.

3. A device for turning and displacing large rings according to claim 2, characterised in that The rotating support (26) comprises three working surfaces and an adapting surface, each working surface is provided with stepped surfaces with different diameters and different heights, the bottom surface of the stepped surface axially supports the large ring, and the side surface radially limits the large ring, and the adapting surface is adapted to the support and positioning of large rings with different diameters and different thicknesses, and the adapting surface is used to ensure that the center of gravity of each rotating support (26) is located on its rotating axis, preventing the large ring from being subjected to eccentric load during the turning and positioning process.

4. A device for turning and displacing large rings according to claim 3, characterised in that The first support platform (2) is also provided with a fifth rotating support assembly (29), which is arranged between the center of the first support platform (2) and its rotating axis and is perpendicular to the rotating axis, and is used to improve the stability of radial limitation when the turning angle of the first support platform (2) exceeds the preset value.

5. The device for turning and displacing large rings according to claim 1, characterized in that, The second support platform (3) is provided with a first fixed support assembly (31), a second fixed support assembly (32), a first adjustable support assembly (33) and a second adjustable support assembly (34) for axially supporting the large ring, the four support assemblies are diagonally distributed and fixedly installed on the second support platform (3), wherein the first adjustable support assembly (33) and the second adjustable support assembly (34) are arranged close to the rotating axis, and the support surfaces of the two are provided with a fixed limiting piece (35) and at least two telescopic limiting pieces (36), the fixed limiting piece (35) is arranged at one end of the first adjustable support assembly (33) and the second adjustable support assembly (34) away from the center of the second support platform (3), and the at least two telescopic limiting pieces (36) are arranged at intervals, and the fixed limiting piece (35) or the corresponding telescopic limiting piece (36) can be selected to protrude according to the specifications and sizes of the large ring, and the large ring is radially limited by the fixed limiting piece (35) or the protruding telescopic limiting piece (36).

6. A device for turning and displacing large rings according to claim 5, characterised in that The second support platform (3) is also provided with a third adjustable support assembly (37), which is arranged between the center of the second support platform (3) and its rotating axis and is perpendicular to the rotating axis, and the structure of the third adjustable support assembly (37) is the same as that of the first adjustable support assembly (33) and the second adjustable support assembly (34), which is used to improve the stability of radial limitation when the turning angle of the second support platform (3) exceeds the preset value.

7. The device for turning over and displacing large rings according to claim 1, characterized in that, It also includes a controller, a first detection element and a second detection element, the first detection element is used to detect the turning angle of the first support platform (2), the second detection element is used to detect the turning angle of the second support platform (3), and the controller is electrically connected with the first detection element, the second detection element, the first driving mechanism and the second driving mechanism, and is used to control the first driving mechanism and the second driving mechanism to stop working when the first detection element and / or the second detection element detects that the turning angle of the corresponding support platform is abnormal.

8. A method of turning over and displacing a large ring member using the turning over and displacing device according to any one of claims 1 to 7, characterized by, The following is included: One of the first support platform (2) and the second support platform (3) is selected as an initial platform, and the other is selected as a termination platform, and the large ring is hoisted to the initial platform to complete the support positioning; After the termination platform is driven to rotate more than 90 degrees, it is kept stationary; The initial platform is driven to rotate, and after the initial platform is rotated to be in butt joint with the termination platform, the termination platform is driven to rotate in the opposite direction to realize the rotation accompanying with the initial platform, and in the process of the accompanying rotation, the center of gravity of the large ring is transferred from the initial platform to the termination platform; After the large ring is stably supported and positioned on the termination platform, the initial platform is driven to rotate in the opposite direction to the initial position, and the termination platform is continuously driven to rotate in the opposite direction to the initial position to complete the 180° overturning of the large ring.

9. A method of roll positioning for a large ring as defined in claim 8, wherein Before hoisting the large ring, the following contents are further included: According to the size of the large ring to be overturned, the four rotating support assemblies on the first support platform (2) are controlled to rotate, and the corresponding telescopic limiters (36) on the second support platform (3) are controlled to extend, so as to adjust the first support platform (2) and the second support platform (3) to a state suitable for the support positioning requirements of the large ring to be overturned.

Images