Turnover device for curve plate unit

Abstract

The invention relates to the technical field of engineering machinery, and provides a curve plate unit turnover device which is characterized in that a clamping and limiting device is arranged on the front surface of a welding platform and is used for clamping a curve plate unit; a first connecting hole and a second connecting hole are formed in each of the two supporting seats; a first connecting hole and a second connecting hole are formed in the side wall, close to the supporting seat, of the welding platform; when the front face of the welding platform faces upwards, the first connecting holes are rotationally connected with the corresponding third connecting holes through first pin shafts correspondingly. When the welding platform rotates around the second pin shafts until the second connecting holes correspond to the fourth connecting holes, the second connecting holes are rotationally connected with the corresponding fourth connecting holes through the second pin shafts respectively; when the welding platform rotates around the second pin shaft till the front face of the welding platform faces downwards, the second supporting leg is supported on the welding platform. The device is higher in controllability, simpler to operate, safer and more efficient, two-side welding of the plate unit can be achieved only through one welding platform, and the manufacturing efficiency of the plate unit is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering machinery, and in particular to a curve plate unit turning device. Background Art

[0002] When manufacturing truss beam plate units, the plate units are usually fixed on an assembly platform for welding and assembly operations. However, since the butt plate units are relatively thick, after the single-sided welding of the butt weld of the plate unit is completed, the plate unit needs to be turned over, and the other side needs to be air-planed and cleaned before continuing the welding and assembly operations to ensure that the plate unit meets the penetration requirements.

[0003] In the prior art, plate clamps are usually used to clamp the plate unit to flip it, but the steel truss plate unit has a certain bending angle. After the plate unit is flipped, the plate unit does not match the welding platform, and the plate unit cannot be stably fixed on the welding platform. Forcible welding and assembly are likely to cause welding deformation, affecting the quality of the plate unit. Usually, the welding platform is re-erected according to the unwelded side of the plate unit, but the process of setting up the platform and moving the plate unit to position is increased, which reduces the manufacturing efficiency of the plate unit. Summary of the invention

[0004] The problem solved by the present invention is how to curve plate unit manufacturing efficiency.

[0005] In order to solve the above problems, the present invention provides a curved plate unit turning device.

[0006] In a first aspect, the present invention provides a curved plate unit turning device, comprising two support seats, a welding platform, a first leg, a second leg and a clamping and limiting device, wherein the two support seats are arranged at intervals along a first direction, the welding platform is arranged between the two support seats, and the clamping and limiting device is arranged on the front side of the welding platform for clamping the plate unit;

[0007] Each of the support seats is provided with a first connection hole and a second connection hole, and in the vertical direction of the support seat, the first connection hole is higher than the second connection hole;

[0008] The welding platform is provided with a third connection hole and a fourth connection hole on both side walls in the first direction, the third connection hole is located at the middle of the side wall of the welding platform, the fourth connection hole is located at the end of the side wall of the welding platform, and the distance between the third connection hole and the fourth connection hole on the same side wall is equal to the distance between the first connection hole and the second connection hole on the same support seat;

[0009] When the welding platform is facing upward and parallel to the ground, the two first connection holes are rotatably connected to the corresponding third connection holes through the first pin shafts, and the first leg is supported at one end of the welding platform away from the fourth connection hole in the second direction, and the second direction is perpendicular to the first direction;

[0010] When the welding platform rotates around the first pin shaft until the second connection hole corresponds to the fourth connection hole, the two second connection holes are rotatably connected to the corresponding fourth connection holes through the second pin shafts respectively;

[0011] When the welding platform rotates around the second pin shaft until the front side of the welding platform faces downward and is parallel to the ground, the second leg is supported on one end of the welding platform away from the fourth connecting hole in the second direction.

[0012] Optionally, a buffer platform is provided on the support seat, and the buffer platform is located between the first connecting hole and the second connecting hole. A buffer slope is provided on the buffer platform. When the welding platform rotates around the first pin shaft to the second connecting hole corresponding to the fourth connecting hole, the back side of the welding platform is used to abut against the buffer slope.

[0013] Optionally, a buffer pad is provided on the buffer slope.

[0014] Optionally, the curved plate unit turning device also includes a bracket and a jack, the bracket is arranged between the first leg and the support seat, the jack is arranged on the bracket, and the jack is used to drive the welding platform to rotate around the first pin shaft until the second connecting hole corresponds to the fourth connecting hole.

[0015] Optionally, a sliding groove is provided on the side wall of the welding platform connected to the support seat along the second direction, a sliding rod is provided in the sliding groove, the sliding rod is used to slide along the extension direction of the sliding groove, and the sliding rod is hinged to the telescopic end of the jack.

[0016] Optionally, a cushion seat is provided between the bracket and the jack, and the height of the cushion seat is adjustable.

[0017] Optionally, the welding platform is a rectangular frame structure, the rectangular frame structure includes two side plates arranged opposite to each other, and the third connecting hole and the fourth connecting hole are both opened on the side plates.

[0018] Optionally, a lifting lug is provided at one end of the side plate away from the fourth connecting hole.

[0019] Optionally, the distance between the second connecting hole and the second leg is less than or equal to the length of the side plate.

[0020] Optionally, rubber pads are respectively provided at ends of the first leg and the second leg for contacting the welding platform.

[0021] The clamping and limiting device of the turning device of the curved plate unit of the present invention is arranged on the front of the welding platform, and is used to clamp the plate unit to ensure the stability of the plate unit when the welding platform is turned over and welded. Two support seats are arranged at intervals along the first direction, and the two support seats are provided with a first connection hole and a second connection hole. In the vertical direction of the support seat, the first connection hole is higher than the second connection hole. The two side walls of the welding platform in the first direction are provided with a third connection hole and a fourth connection hole. The third connection hole is located at the middle position of the side wall of the welding platform, and the fourth connection hole is located at the end of the side wall of the welding platform. The distance between the third connection hole and the fourth connection hole on the same side wall is equal to the distance between the first connection hole and the second connection hole on the same support seat, so that when the welding platform is turned over, the second connection hole can overlap with the fourth connection hole. The first leg, the support seat, and the second leg are arranged in sequence along the second direction. When the welding platform is facing upward and parallel to the ground, the two first connection holes are rotatably connected to the corresponding third connection holes through the first pin shaft, so as to facilitate the flipping of the welding platform. The first leg is supported at one end of the welding platform away from the fourth connection hole in the second direction to maintain the stability of the welding platform in this state. When the welding platform rotates around the first pin shaft until the second connection hole corresponds to the fourth connection hole, the two second connection holes are rotatably connected to the corresponding fourth connection hole through the second pin shaft. When the welding platform rotates around the second pin shaft until the welding platform faces downward and is parallel to the ground, the second leg is supported at one end of the welding platform away from the fourth connection hole in the second direction to maintain the stability of the welding platform in this state. The embodiment of the present invention realizes the flipping of the welding platform by changing the rotation center from the first connecting hole and the third connecting hole connected by the first pin to the second connecting hole and the fourth connecting hole connected by the second pin, so as to perform double-sided welding on the plate unit fixed on the welding platform by the clamping limit device. The rotation process is completed in steps, and the single rotation workload is small. Compared with the prior art of using plate clamps to flip and move the curved plate unit to another welding platform, it is more controllable, simpler, safer and more efficient to operate, and the number of welding platforms and the space required for production are effectively reduced. Only one welding platform is required to achieve double-sided welding of the plate unit, which reduces production costs and effectively improves the manufacturing efficiency of the plate unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a curved plate unit turning device according to an embodiment of the present invention;

[0023] Figure 2It is a schematic diagram of the front view structure of the curved plate unit turning device in the second turning state according to an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of the front view structure of the curved plate unit turning device in the third turning state according to an embodiment of the present invention;

[0025] Figure 4 It is a schematic diagram of the front structural view of the curved plate unit turning over device in the first turning over state according to an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1-support seat; 11-first connecting hole; 12-second connecting hole; 13-buffer slope;

[0028] 2-welding platform; 21-third connecting hole; 22-fourth connecting hole; 23-slideway;

[0029] 3-First leg;

[0030] 4- Second leg;

[0031] 5-Clamping limit device;

[0032] 6- Bracket;

[0033] 7- Jack;

[0034] 8- hanging lug;

[0035] 100- Pedestal;

[0036] 200-plate unit. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0038] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0039] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0040] Moreover, the Z-axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction of the arrow of the Z-axis) represents the top, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the bottom; the X-axis in the accompanying drawings represents the horizontal direction, that is, the left and right position, and the positive direction of the X-axis (that is, the direction of the arrow of the X-axis) represents the right, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the left; the Y-axis in the accompanying drawings represents the longitudinal direction, that is, the front and back position, and the positive direction of the Y-axis (that is, the direction of the arrow of the Y-axis) represents the front, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the back.

[0041] It should also be noted that the aforementioned Z-axis, X-axis and Y-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0042] like Figure 1 As shown, in response to the problems existing in the above-mentioned related technologies, the present embodiment provides a curved plate unit turning device, comprising two support seats 1, a welding platform 2, a first leg 3, a second leg 4 and a clamping limit device 5, the two support seats 1 are arranged at intervals along a first direction, the welding platform 2 is arranged between the two support seats 1, and the clamping limit device 5 is arranged on the front side of the welding platform 2 for clamping the plate unit 200, wherein the first direction is the Y-axis direction.

[0043] Specifically, the clamping limit device 5 may include a plurality of spring clamps, magnetic clamping devices, clamping cylinders, electric clamping devices, etc., which can be used to clamp the edge of the plate unit 200, and each clamping limit device 5 can be set on the welding platform through a slide groove, and the position of the clamping limit device 5 can be adjusted according to the size of the plate unit 200 to adapt to plate units 200 of different sizes, thereby increasing versatility. The clamping limit device 5 may also include a limit device, such as a limit switch, a cylinder limit switch, etc. After adjusting the clamping limit device 5, the clamping limit device 5 is fixed in position by the limit device to avoid displacement during the welding and assembly process of the plate unit 200, thereby affecting the welding quality. The welding platform 2 may be a frame structure, and its platform surface is provided with a mesh structure, and the clamping limit device 5 may also be provided on the welding platform 2 through the mesh structure.

[0044] The first leg 3 , the support seat 1 and the second leg 4 are arranged in sequence along the second direction. Each support seat 1 is provided with a first connecting hole 11 and a second connecting hole 12 . In the vertical direction of the support seat 1 , the first connecting hole 11 is higher than the second connecting hole 12 .

[0045] The welding platform 2 is provided with a third connecting hole 21 and a fourth connecting hole 22 on both side walls in the first direction, the third connecting hole 21 is located in the middle of the side wall of the welding platform 2, and the fourth connecting hole 22 is located at the end of the side wall of the welding platform 2, and the distance between the third connecting hole 21 and the fourth connecting hole 22 on the same side wall is equal to the distance between the first connecting hole 11 and the second connecting hole 12 on the same support seat 1.

[0046] When the welding platform 2 is facing upward and parallel to the ground, the two first connection holes 11 are rotatably connected to the corresponding third connection holes 21 through the first pins, and the first leg 3 is supported at one end of the welding platform 2 away from the fourth connection hole 22 in the second direction, the second direction is perpendicular to the first direction, and the second direction is as shown in FIG. Figure 1 The X-axis direction is shown in .

[0047] When the welding platform 2 rotates around the first pin shaft until the second connection hole 12 corresponds to the fourth connection hole 22 , the two second connection holes 12 are rotatably connected to the corresponding fourth connection holes 22 through the second pin shafts.

[0048] When the welding platform 2 rotates around the second pin shaft until the front side of the welding platform 2 faces downward and is parallel to the ground, the second leg 4 is supported on one end of the welding platform 2 away from the fourth connecting hole 22 in the second direction.

[0049] Specifically, for each support seat 1, in the Z-axis direction (i.e., the vertical direction), the first connection hole 11 is always larger than the second connection hole 12, and in the X-axis direction (i.e., the second direction), the first connection hole 11 and the second connection hole 12 can be the same or the same. Figure 1 As shown, the position of the first connection hole 11 in the X-axis direction is always smaller than the position of the second connection hole 12 in the X-axis direction. A third connection hole 21 is provided at the middle position of each side wall of the welding platform 2 close to the support seat 1, and the two first connection holes 11 are rotatably connected to the corresponding third connection holes 21 through the first pin shaft, so that the welding platform 2 rotates around the first pin shaft; a fourth connection hole 22 is provided at the end of each side wall of the welding platform 2 close to the support seat 1, and the two second connection holes 12 are rotatably connected to the corresponding fourth connection holes 22 through the second pin shaft, so that the welding platform 2 rotates around the second pin shaft.

[0050] It should be noted that the welding platform 2 has three states on the support base 1. The first and third states are stable states during the welding and assembly of the plate unit 200. The second state is the device buffering state, which provides a certain buffer for the turning over of the welding platform, that is, the state change, and increases the safety of the device turning over.

[0051] The first flip state is Figure 4 As shown: when welding the first side of the plate unit 200, the front of the welding platform 2 faces upward (the front of the welding platform 2 is the end face provided with the clamping limit device 5), that is, facing the positive direction of the Z axis, and the two first connecting holes 11 are connected with the corresponding third connecting holes 21 through the first pin shaft to rotatably connect the welding platform 2 to the support seat 1. At this time, the end of the welding platform 2 with the fourth connecting hole 22 faces the direction of the second leg 4, that is, the positive direction of the X axis, and the first leg 1 abuts against the end of the welding platform 2 away from the fourth connecting hole 22 to support the welding platform 2. The second flip state is as shown in FIG. Figure 2 As shown: After the welding of the first side of the plate unit 200 is completed, the welding platform 2 needs to be rotated to weld the second side. First, the welding platform 2 is buffered and flipped, and the welding platform 2 is rotated around the first pin shaft until the two second connecting holes 12 correspond to the corresponding fourth connecting holes 22 respectively, and then the rotation is stopped. After the second pin shaft is installed, the first pin shaft is removed to connect the end of the welding platform 2 with the support seat 1. At this time, the welding platform 2 can be set perpendicular to the ground, that is, the end of the welding platform 2 away from the fourth connecting hole 22 is facing the positive direction of the Z axis, or the welding platform 2 is tilted, which is specifically determined according to the positions of the first connecting hole 11 and the second connecting hole 12 on the X axis; the third flipping state is as shown in FIG. Figure 3As shown: after the welding platform 2 is buffered and flipped, the final flip is performed, and the welding platform 2 is rotated around the second pin shaft until the front of the welding platform 2 faces downward, that is, toward the negative direction of the Z axis. At this time, the end of the welding platform 2 away from the fourth connecting hole 22 is toward the direction of the first leg 3, that is, the negative direction of the X axis, and the second leg 4 is in contact with the end of the welding platform 2 where the fourth connecting hole 22 is opened to support the welding platform 2.

[0052] It should be noted that the welding platform 2 is a mesh frame structure. When the welding platform 2 is in a first state, the first side of the plate unit 200 is welded. When the welding platform 2 is in a third state, the second side of the plate unit 200 can be welded through the welding platform 2.

[0053] The first leg 3, the support seat 1 and the second leg 4 are arranged in sequence along the positive direction of the X-axis. In order to ensure the welding stability of the welding platform 2 in the first flipping state and the third flipping state, the height of the first leg 3 in the Z-axis direction is the same as the height of the first connecting hole 11 in the Z-axis direction, so that the welding platform 2 is in a horizontal state in the first flipping state, that is, parallel to the X-axis, and the height of the second leg 4 in the Z-axis direction is the same as the height of the second connecting hole 12 in the Z-axis direction, so that the welding platform 2 is in a horizontal state in the third flipping state, that is, parallel to the X-axis.

[0054] In this embodiment, the clamping and limiting device 5 is arranged on the front of the welding platform 2, and is used to clamp the plate unit 200 to ensure the stability of the plate unit 200 when the welding platform is turned over and welded. The two support seats 1 are arranged at intervals along the first direction, and the two support seats 1 are provided with a first connection hole 11 and a second connection hole 12. In the vertical direction of the support seat 1, the first connection hole 11 is higher than the second connection hole 12. The welding platform 2 is provided with a third connection hole 21 and a fourth connection hole 22 on both side walls in the first direction. The third connection hole 21 is located in the middle of the side wall of the welding platform 2, and the fourth connection hole 22 is located at the end of the side wall of the welding platform 2. The distance between the third connection hole 21 and the fourth connection hole 22 on the same side wall is equal to the distance between the first connection hole 11 and the second connection hole 12 on the same support seat 1, so that when the welding platform 1 is turned over, the second connection hole 12 can overlap with the fourth connection hole 22. The first leg 3, the support seat 1 and the second leg 4 are arranged in sequence along the second direction. When the welding platform 2 is facing upward and parallel to the ground, the two first connection holes 11 are respectively rotatably connected with the corresponding third connection holes 21 through the first pin shaft, so as to facilitate the flipping of the welding platform 2. The first leg 3 is supported on the end of the welding platform 2 away from the fourth connection hole 22 in the second direction to maintain the stability of the welding platform 2 in this state. When the welding platform 2 rotates around the first pin shaft until the second connection hole 12 corresponds to the fourth connection hole 22, the two second connection holes 12 are respectively rotatably connected with the corresponding fourth connection hole 22 through the second pin shaft. When the welding platform 2 rotates around the second pin shaft until the front of the welding platform 2 is facing downward and parallel to the ground, the second leg 4 is supported on the end of the welding platform 2 away from the fourth connection hole 22 in the second direction. The second leg 4 is supported on the end of the welding platform 2 with the fourth connection hole 22 to maintain the stability of the welding platform 2 in this state. The embodiment of the present invention realizes the flipping of the welding platform 2 by changing the rotation center from the first connecting hole 11 and the third connecting hole 21 connected by the first pin to the second connecting hole 12 and the fourth connecting hole 22 connected by the second pin, so as to perform double-sided welding on the plate unit 200 fixed on the welding platform 2 by the clamping limit device 5. The rotation process is completed in steps, and the single rotation workload is small. Compared with the prior art of flipping and moving the plate unit 200200 to another welding platform by using a plate clamp, the controllability is stronger, the operation is simpler, safer, and more efficient, and the number of welding platforms 2 and the space required for production are effectively reduced. Only one welding platform is required to achieve double-sided welding of the plate unit 200, which reduces production costs and effectively improves the manufacturing efficiency of the plate unit 200.

[0055] Optionally, a buffer platform 13 is provided on the support seat 1, and the buffer platform 13 is located between the first connecting hole 11 and the second connecting hole 12. A buffer slope is provided on the buffer platform (13). When the welding platform 2 rotates around the first pin shaft to the second connecting hole 12 corresponding to the fourth connecting hole 22, the back side of the welding platform 2 abuts against the buffer slope.

[0056] Optionally, a buffer pad is provided on the buffer slope.

[0057] Specifically, when the welding platform 2 rotates around the first pin, the back side of the welding platform 2 may have a flip angle that is too large to make the two second connection holes 12 correspond to the corresponding fourth connection holes 22 respectively. Figure 2 As shown, a buffer platform 13 is arranged between the first connecting hole 11 and the second connecting hole 12, and a buffer pad is arranged on the buffer slope on the buffer platform 13, and the buffer pad can be a rubber pad, a sponge pad, etc. When the welding platform 2 rotates around the first pin shaft, it abuts against the buffer platform 13, and the welding platform 2 is placed in a flipping angle that is too large, and the buffer slope is parallel to the straight line connecting the first connecting hole 11 and the second connecting hole 12. When the back side of the welding platform 2 abuts against the buffer slope, it is ensured that the second connecting hole 12 coincides with the fourth connecting hole 22, and the buffer pad can effectively reduce the collision between the support seat 1 and the welding platform 2, thereby increasing the safety of the production and manufacturing of the plate unit 200.

[0058] Optionally, the curved plate unit turning device also includes a bracket 6 and a jack 7, the bracket 6 is arranged between the first leg 3 and the support seat 1, the jack 7 is arranged on the bracket 6, and the jack 7 is used to drive the welding platform 2 to rotate around the first pin shaft until the second connecting hole 12 corresponds to the fourth connecting hole 22.

[0059] Specifically, Figure 1 As shown, the jack is arranged on the bracket 6, and the telescopic end of the jack 7 is in contact with the welding platform 2. When the welding platform performs buffering rotation, the telescopic end of the jack 7 extends to drive the welding platform 2 to rotate around the first pin shaft, thereby reducing manual operation and improving the production efficiency of the plate unit 200.

[0060] Optionally, a sliding groove 23 is provided on the side wall of the welding platform 2 connected to the support seat 1 along the second direction, a sliding rod is provided in the sliding groove 23, the sliding rod is used to slide along the extension direction of the sliding groove 23, and the sliding rod is hinged to the telescopic end of the jack 7.

[0061] Specifically, in order to prevent the jack 7 from slipping when driving the welding platform 2 to rotate, a slide groove 23 of a certain length is opened along the second direction at the side wall position of the welding platform 2 corresponding to the telescopic end of the jack 7, and the telescopic end of the jack 7 is hinged to the slide groove 23 through a slide rod to prevent the jack 7 from slipping. It should be noted that before the third flipping state, that is, before the welding platform 2 rotates around the second pin shaft, the jack 7 needs to be separated from the slide rod.

[0062] Optionally, a cushion seat 100 is provided between the bracket 6 and the jack 7, and the height of the cushion seat 100 is adjustable.

[0063] Specifically, Figure 2-4 As shown, the cushion 100 can be used to support the jack 7 and to adjust the distance between the jack 7 and the welding platform 2. In a preferred embodiment, the cushion 100 can be a plurality of cushion blocks stacked together, and the distance between the jack 7 and the welding platform 2 can be adjusted by adjusting the number of cushion blocks to adapt to different working conditions, for example, the number of cushion blocks can be increased or decreased according to the height of the welding platform 2, the height of the bracket 6, and the height of the jack 7.

[0064] Optionally, the welding platform 2 is a rectangular frame structure, which includes two side plates arranged opposite to each other, and the third connection hole 21 and the fourth connection hole 22 are both opened on the side plates.

[0065] Specifically, Figure 1 As shown, the welding platform 2 is a rectangular frame structure, and the two side plates of the welding platform 2 can be rotatably connected between the two support seats 1 through two first pins or second pins respectively.

[0066] Optionally, a lifting lug 8 is provided at one end of the side plate away from the fourth connection hole 22. When the welding platform 2 is turned over, a crane can be used to lift the welding platform 2 through the lifting lug on the platform.

[0067] Optionally, the distance between the second connection hole 12 and the second leg 4 is less than or equal to the length of the side plate. So that when the welding platform 2 rotates around the second pin shaft provided on the second connection hole 12 and the fourth connection hole 22 to be parallel to the ground, the second leg 4 can stably support the welding platform 2. Similarly, since the third connection hole 21 is provided in the middle position of the side plate of the welding platform 2, the distance between the first connection hole 11 and the first leg 3 is less than or equal to half the length of the side plate, so that when the welding platform 2 rotates around the first pin shaft provided on the first connection hole 11 and the third connection hole 21 to be parallel to the ground, the first leg 3 can stably support the welding platform 2.

[0068] Optionally, rubber pads are provided at the ends of the first leg 3 and the second leg 4 for contacting the welding platform 2 , respectively, to reduce collision and friction between the welding platform 2 and the first leg 3 and the second leg 4 .

[0069] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A curved plate unit turning device, characterized in that: The device comprises two support seats (1), a welding platform (2), a first support leg (3), a second support leg (4) and a clamping and limiting device (5), wherein the two support seats (1) are arranged at intervals along a first direction, the welding platform (2) is arranged between the two support seats (1), and the clamping and limiting device (5) is arranged on the front side of the welding platform (2) and is used for clamping a plate unit (200); Each of the support seats (1) is provided with a first connection hole (11) and a second connection hole (12); in the vertical direction of the support seat (1), the first connection hole (11) is higher than the second connection hole (12); The welding platform (2) is provided with a third connection hole (21) and a fourth connection hole (22) on both side walls in the first direction, the third connection hole (21) is located at the middle of the side wall of the welding platform (2), and the fourth connection hole (22) is located at the end of the side wall of the welding platform (2), and the distance between the third connection hole (21) and the fourth connection hole (22) on the same side wall is equal to the distance between the first connection hole (11) and the second connection hole (12) on the same support seat (1); When the welding platform (2) is facing upward and arranged parallel to the ground, the two first connection holes (11) are rotatably connected to the corresponding third connection holes (21) via first pins, and the first leg (3) is supported on an end of the welding platform (2) away from the fourth connection hole (22) in a second direction, and the second direction is perpendicular to the first direction; When the welding platform (2) rotates around the first pin shaft until the second connection hole (12) corresponds to the fourth connection hole (22), the two second connection holes (12) are respectively rotatably connected to the corresponding fourth connection holes (22) via the second pin shaft; When the welding platform (2) rotates around the second pin shaft until the front side of the welding platform (2) faces downward and is parallel to the ground, the second leg (4) is supported on an end of the welding platform (2) away from the fourth connecting hole (22) in the second direction.

2. The curved plate unit turning device according to claim 1, characterized in that: The support seat (1) is provided with a buffer platform (13), the buffer platform (13) is located between the first connection hole (11) and the second connection hole (12), and the buffer platform (13) is provided with a buffer slope. When the welding platform (2) rotates around the first pin shaft until the second connection hole (12) corresponds to the fourth connection hole (22), the back side of the welding platform (2) is used to abut against the buffer slope.

3. The curved plate unit turning device according to claim 2, characterized in that: A buffer pad is arranged on the buffer slope.

4. The curved plate unit turning device according to claim 1, characterized in that: It also includes a bracket (6) and a jack (7), wherein the bracket (6) is arranged between the first leg (3) and the support seat (1), and the jack (7) is arranged on the bracket (6), and the jack (7) is used to drive the welding platform (2) to rotate around the first pin shaft until the second connecting hole (12) corresponds to the fourth connecting hole (22).

5. The curved plate unit turning device according to claim 4, characterized in that: The side wall of the welding platform (2) used for connecting with the support seat (1) is provided with a slide groove (23) along the second direction, and a slide rod is arranged in the slide groove (23). The slide rod is used for sliding along the extension direction of the slide groove (23), and the slide rod is hinged to the telescopic end of the jack (7).

6. The curved plate unit turning device according to claim 4, characterized in that: A cushion seat (100) is provided between the bracket (6) and the jack (7), and the height of the cushion seat (100) is adjustable.

7. The curved plate unit turning device according to claim 1, characterized in that: The welding platform (2) is a rectangular frame structure, which comprises two side plates arranged opposite to each other, and the third connection hole (21) and the fourth connection hole (22) are both opened on the side plates.

8. The curved plate unit turning device according to claim 7, characterized in that: A lifting lug (8) is provided at one end of the side plate away from the fourth connecting hole (22).

9. The curve plate unit turning device according to claim 7, characterized in that: The distance between the second connecting hole (12) and the second supporting leg (4) is less than or equal to the length of the side plate.

10. The curved plate unit turning device according to claim 1, characterized in that: The ends of the first supporting leg (3) and the second supporting leg (4) for contacting the welding platform (2) are respectively provided with rubber pads.

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