Welding tool for welding spherical crown lining plate and spherical stainless steel plate

Abstract

The utility model relates to the technical field of spherical crown lining plate welding tools, in particular to a welding tool used for welding a spherical crown lining plate and a spherical stainless steel plate. The automatic welding machine comprises a pressing device, a rotating device, a welding device, a working platform and a frame, the rotating device is fixedly mounted on the working platform, the plane of the spherical crown lining plate is placed at the top of the rotating device, the spherical stainless steel plate is stacked on the spherical crown lining plate, and the rotating device can drive the spherical crown lining plate and the spherical stainless steel plate to rotate around the vertical center line of the rotating device; the abutting device is located above the spherical stainless steel plate, and the top of the abutting device is fixedly installed on the frame. According to the annular welding device, the abutting device, the rotating device and the welding device are arranged respectively, annular welding can be conducted on the spherical crown lining plate and the spherical stainless steel plate in the rotating process, welding errors are reduced, the qualified rate of products is increased, welding time is shortened, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs for spherical crown liners, in particular to a welding jig for welding spherical crown liners and spherical stainless steel plates. Background Art

[0002] A bridge bearing is an important structural component connecting the upper and lower structures of a bridge. It is located between the bridge and the cushion stone and can reliably transfer the load and deformation borne by the upper structure of the bridge to the lower structure of the bridge. It is an important force transmission device for the bridge.

[0003] Among various types of bridge bearings, spherical bridge bearings also occupy a very important position. Among them, a spherical bridge bearing is composed of an upper bearing plate, a stainless steel mirror plate, a planar slide plate, a spherical crown liner, a spherical stainless steel plate, etc. Before its installation, it is necessary to perform circumferential welding on the edge where the spherical crown liner and the spherical stainless steel plate are in contact to ensure a stable fixed connection between the spherical crown liner and the spherical stainless steel plate.

[0004] However, in the existing welding jigs, usually, the spherical crown liner and the spherical stainless steel plate are placed on the welding workbench. A welding worker holds a jack in one hand to press against the spherical crown liner and the spherical stainless steel plate to ensure that there is no relative movement between the spherical crown liner and the spherical stainless steel plate, and then holds a welding torch in the other hand to gradually perform circumferential welding on the edge where the spherical crown liner and the spherical stainless steel plate are in contact. However, this welding method will affect the non - coincidence of the central axes of the spherical crown liner and the spherical stainless steel plate, and the spherical crown liner and the spherical stainless steel plate are likely to have relative movement, which will lead to inaccurate welding of the spherical crown liner and the spherical stainless steel plate. When implementing the installation, it will also cause uneven stress, resulting in instability when the subsequent bridge bearing supports the upper structure of the bridge. At the same time, the welding worker holding the welding torch to perform gradual circumferential welding will also have a certain welding error, which will lead to unstable welding, reduce the qualified rate of products, and be time - consuming and laborious, reducing work efficiency. Summary of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the above - mentioned shortcomings and deficiencies of the prior art, the utility model provides a welding jig for welding spherical crown liners and spherical stainless steel plates, which solves the technical problems that manual welding will affect the non - coincidence of the central axes of the spherical crown liner and the spherical stainless steel plate, and the spherical crown liner and the spherical stainless steel plate are likely to have relative movement, resulting in inaccurate welding of the spherical crown liner and the spherical stainless steel plate. At the same time, there will also be a certain welding error when manually performing gradual circumferential welding, which will lead to unstable welding, reduce the qualified rate of products, and be time - consuming and laborious, reducing work efficiency.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the main technical solutions adopted by the present utility model include:

[0009] The present utility model provides a welding tooling for welding a spherical crown lining plate and a spherical stainless steel plate, including a pressing device, a rotating device, a welding device, a working platform and a frame; the rotating device is fixedly installed on the working platform, the plane of the spherical crown lining plate is placed on the top of the rotating device, the spherical stainless steel plate is stacked on the spherical crown lining plate and the central axis of the spherical stainless steel plate always coincides with the central axis of the spherical crown lining plate, and the rotating device can drive the spherical crown lining plate and the spherical stainless steel plate to rotate around the vertical center line of the rotating device; the pressing device is located above the spherical stainless steel plate and the top of the pressing device is fixedly installed on the frame, the bottom of the frame is fixedly connected to the top of the working platform, the pressing device can vertically extend to press the spherical stainless steel plate on the spherical crown lining plate and the bottom of the pressing device can rotate with the rotation of the rotating device; the welding device is installed on the working platform and there is a gap between the welding device and the rotating device for circularly welding the spherical crown lining plate and the spherical stainless steel plate.

[0010] Preferably, the pressing device includes a hydraulic cylinder and a pressing mechanism; the fixed end of the hydraulic cylinder is detachably installed on the bottom of the frame through a first mounting plate, the top of the pressing mechanism is fixedly installed on the extending end of the hydraulic cylinder, and the bottom of the pressing mechanism can be attached to the spherical surface of the spherical stainless steel plate through the extension of the hydraulic cylinder to press the spherical stainless steel plate on the spherical crown lining plate.

[0011] Preferably, the pressing mechanism includes a mounting member, a connecting member, a bearing, a connecting rod, a second mounting plate and a pressing plate; the top of the mounting member is fixedly connected to the extending end of the hydraulic cylinder, the top of the connecting member is threadedly connected to the bottom of the mounting member, the outer ring of the bearing is fixedly installed inside the bottom of the connecting member, the inner wall of the inner ring of the bearing is fixedly connected to the outer wall of the connecting rod, the bottom of the connecting rod is fixedly connected to the top of the second mounting plate, the bottom of the second mounting plate is fixedly connected to the top of the pressing plate, and the bottom of the pressing plate can press the spherical stainless steel plate on the spherical crown lining plate through the extension of the hydraulic cylinder; the vertical central axes of the mounting member, the connecting member, the bearing, the connecting rod, the second mounting plate and the pressing plate coincide with the vertical central axes of the spherical crown lining plate and the spherical stainless steel plate, and the inner ring of the bearing, the connecting rod, the second mounting plate and the pressing plate can rotate around the vertical central axis of the hydraulic cylinder with the rotation of the rotating device.

[0012] Preferably, the bottom of the pressing plate is a spherical concave surface.

[0013] Preferably, the pressing device further includes a plurality of guiding mechanisms; the tops of the plurality of guiding mechanisms are fixedly connected to the outer wall of the fixed cylinder of the hydraulic cylinder, the bottoms of the guiding mechanisms are rotatably connected to the top of the second mounting plate, and the plurality of guiding mechanisms are circumferentially arranged around the vertical central axis of the hydraulic cylinder, and the guiding mechanisms can guide the vertical telescopic direction of the hydraulic cylinder.

[0014] Preferably, the guiding mechanism includes a mounting block, a telescopic rod, and a roller; the side wall of the mounting block is fixedly connected to the outer wall of the fixed cylinder, one end of the telescopic rod is fixedly connected to the bottom of the mounting block, the other end of the telescopic rod is movably connected to the top of the roller, and the roller is arranged horizontally; a circular card slot is provided on the top of the second mounting plate, and the vertical cross-section of the circular card slot is an inverted T shape, the roller is placed in the circular card slot, and the rolling surface of the roller fits with the inner wall of the circular card slot, and the top wall and the bottom wall of the roller respectively fit with the top wall and the bottom wall of the circular card slot.

[0015] Preferably, the rotating device includes a reduction motor, a rotating seat, a placing table, and a shock-absorbing mechanism; the bottom of the rotating seat fits with the top of the working platform, a shock-absorbing space is provided inside the rotating seat, both ends of the shock-absorbing mechanism are fixedly connected to the bottom wall of the shock-absorbing space and the bottom of the placing table respectively, the flat surface of the spherical crown liner is placed on the top of the placing table, the reduction motor is fixedly installed on the bottom of the working platform, and the output shaft of the reduction motor passes through the working platform and is fixedly connected to the bottom of the rotating seat.

[0016] Preferably, a plurality of circular grooves are provided on the top of the placing table, and the diameters of the plurality of circular grooves decrease in sequence from outside to inside, and the plurality of circular grooves extend downward in a stepped shape from outside to inside; the top of the placing table is higher than the top of the rotating seat.

[0017] Preferably, the welding device includes a welding torch and a hinged leg; one end of the hinged leg is fixedly installed on the working platform, and the other end is hinged to the outer wall of the welding torch, and the welding torch can change the angle with the horizontal plane.

[0018] Preferably, the spherical crown liner and the spherical stainless steel plate are components of a spherical bearing for bridges.

[0019] (III) Advantageous Effects

[0020] The advantageous effects of the present utility model are as follows:

[0021] 1. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate according to the present utility model can, by respectively providing a pressing device, a rotating device and a welding device, press the spherical stainless steel plate against the spherical crown lining plate while making the rotating device drive the spherical crown lining plate and the spherical stainless steel plate to rotate simultaneously, and the welding device performs circular welding on the rotating spherical crown lining plate and spherical stainless steel plate, so that the central axes of the spherical crown lining plate and the spherical stainless steel plate always remain coincident, avoiding relative movement between the spherical crown lining plate and the spherical stainless steel plate, and enabling the spherical crown lining plate and the spherical stainless steel plate to be evenly stressed during installation. Moreover, through the rotation of the rotating device, manual welding is no longer required, thereby reducing welding errors, making welding more stable and accurate, improving the qualified rate of products, reducing welding time, improving work efficiency, and thus realizing automatic welding of the spherical crown lining plate and the spherical stainless steel plate.

[0022] 2. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate according to the present utility model can, by providing a hydraulic cylinder and a pressing mechanism, realize the vertical lifting of the pressing mechanism driven by the hydraulic cylinder, so as to press the spherical stainless steel plate against the spherical crown lining plate, and further make the vertical central axes of the spherical crown lining plate and the spherical stainless steel plate always remain coincident. By threadedly connecting the top of the connecting member to the bottom of the mounting member, it can be made detachable, that is, different-sized pressing plates can be replaced at any time, so as to adapt to the pressing of spherical crown lining plates and spherical stainless steel plates of different sizes, making the adaptability of this tool stronger. By fixedly connecting the outer ring of the bearing to the inside of the bottom of the connecting member and the inner ring to the outer wall of the connecting rod, it can be realized that the pressing plate can not only press the spherical crown lining plate and the spherical stainless steel plate, but also enable the connecting rod and the pressing plate to rotate with the rotation of the rotating device driving the spherical crown lining plate and the spherical stainless steel plate, so that the pressing plate can always press the spherical stainless steel plate against the spherical crown lining plate, and the vertical central axes of the spherical crown lining plate and the spherical stainless steel plate always remain coincident.

[0023] 3. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate according to the present utility model can, by setting the bottom of the pressing plate as a spherical concave surface, make the pressing plate more adaptable to the outer wall shape of the spherical stainless steel plate, so that the pressing plate fits more closely to the outer wall of the spherical stainless steel plate when pressing the spherical stainless steel plate.

[0024] 4. A welding tool for welding a spherical crown liner and a spherical stainless steel plate of the present utility model can guide and limit the telescopic direction of a hydraulic cylinder by arranging a plurality of guiding mechanisms, avoiding the deviation of the telescopic direction of the hydraulic cylinder. By arranging rollers and providing a circular card slot on the second mounting plate that cooperates with the rollers, it can limit the rollers so that the telescopic rod can be engaged with the circular card slot due to the rollers. Moreover, since the mounting block is fixedly installed on the outer wall of the fixed cylinder, the telescopic rod is fixed and immovable. Through the rollers and the circular card slot, the second mounting plate can rotate without being restricted by the telescopic rod, enabling the pressing plate to still rotate with the rotation of the spherical crown liner and the spherical stainless steel plate. Additionally, by arranging rollers, it can reduce the friction between the telescopic rod and the circular card slot and also make the rotation of the second mounting plate smoother.

[0025] 5. A welding tool for welding a spherical crown liner and a spherical stainless steel plate of the present utility model can drive the rotating seat to rotate by arranging a reduction motor, a rotating seat, a placing table, and a damping mechanism. Then, the spherical crown liner and the spherical stainless steel plate placed on the placing table can rotate with the rotation of the rotating seat. Moreover, by arranging the damping mechanism, when the pressing plate presses against the spherical crown liner and the spherical stainless steel plate, the damping mechanism can buffer the spherical crown liner, the spherical stainless steel plate, and the placing table, avoiding excessive rigid pressing of the pressing plate on the spherical crown liner and the spherical stainless steel plate and preventing damage to the spherical crown liner and the spherical stainless steel plate. By providing a plurality of circular grooves on the top of the placing table, it can place spherical crown liners with different diameters, facilitating the welding of spherical crown liners and spherical stainless steel plates with different diameters, thereby improving the adaptability of this tooling. By setting the top of the placing table higher than the top of the rotating seat, there can be a relatively large vertical moving distance between the placing table and the rotating seat, enabling the pressing plate to press more tightly and stably when pressing against the spherical crown liner and the spherical stainless steel plate.

[0026] 6. A welding tool for welding a spherical crown liner and a spherical stainless steel plate of the present utility model can change the angle between the welding torch and the horizontal plane by hinging the welding torch and the hinged leg, thereby adapting to the welding of spherical crown liners and spherical stainless steel plates with different diameters and making the welding device more adaptable. At the same time, through the hinged leg, the welding torch can also change the horizontal distance from the rotating device, making the welding device more suitable for welding spherical crown liners and spherical stainless steel plates with different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is an overall three - dimensional structural schematic diagram of a welding tool for welding a spherical crown liner and a spherical stainless steel plate of the present utility model;

[0028] Figure 2Front view schematic diagram of the overall structure of a welding tooling for welding a spherical crown lining plate and a spherical stainless steel plate of the present utility model;

[0029] Figure 3 Cross-sectional structure schematic diagram of a pressing device of a welding tooling for welding a spherical crown lining plate and a spherical stainless steel plate of the present utility model;

[0030] Figure 4 Overall three-dimensional structure schematic diagram of a second mounting plate of a welding tooling for welding a spherical crown lining plate and a spherical stainless steel plate of the present utility model;

[0031] Figure 5 Overall three-dimensional structure schematic diagram of a rotating device of a welding tooling for welding a spherical crown lining plate and a spherical stainless steel plate of the present utility model;

[0032] Figure 6 Overall cross-sectional structure schematic diagram of a rotating device of a welding tooling for welding a spherical crown lining plate and a spherical stainless steel plate of the present utility model;

[0033] Figure 7 Overall three-dimensional structure schematic diagram of a welding device of a welding tooling for welding a spherical crown lining plate and a spherical stainless steel plate of the present utility model.

[0034]

Explanation of reference numerals

[0035] 1: Spherical crown lining plate; 2: Spherical stainless steel plate; 3: Pressing device; 31: Hydraulic cylinder; 32: Pressing mechanism; 321: Mounting member; 322: Connecting member; 323: Bearing; 324: Connecting rod; 325: Second mounting plate; 3251: Circular card slot; 326: Pressing plate; 33: Guiding mechanism; 331: Mounting block; 332: Telescopic rod; 333: Roller; 4: Rotating device; 41: Reduction motor; 42: Rotating base; 43: Placing table; 431: Circular groove; 44: Shock-absorbing mechanism; 5: Welding device; 51: Welding torch; 52: Hinged leg; 6: Working platform; 7: Frame. Detailed implementation manners

[0036] In order to better understand the above technical solutions, the exemplary embodiments of the present utility model will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present utility model can be understood more clearly and thoroughly, and the scope of the present utility model can be completely conveyed to those skilled in the art.

[0037] Embodiment 1

[0038] As Figures 1 - 7As shown in the figure, a welding tooling for welding a spherical crown liner and a spherical stainless steel plate in this embodiment includes a pressing device 3, a rotating device 4, a welding device 5, a working platform 6, and a frame 7. Among them, the spherical crown liner 1 and the spherical stainless steel plate 2 are components of a spherical bridge bearing.

[0039] Specifically, the rotating device 4 is fixedly installed on the working platform 6. The plane of the spherical crown liner 1 is placed on the top of the rotating device 4. The spherical stainless steel plate 2 is stacked on the spherical crown liner 1, and the central axis of the spherical stainless steel plate 2 always coincides with the central axis of the spherical crown liner 1. The rotating device 4 can drive the spherical crown liner 1 and the spherical stainless steel plate 2 to rotate around the vertical center line of the rotating device 4. The pressing device 3 is located above the spherical stainless steel plate 2, and the top of the pressing device 3 is fixedly installed on the frame 7. The bottom of the frame 7 is fixedly connected to the top of the working platform 6. The pressing device 3 can vertically extend to press the spherical stainless steel plate 2 onto the spherical crown liner 1, and the bottom of the pressing device 3 can rotate along with the rotation of the rotating device 4. The welding device 5 is installed on the working platform 6, and there is a gap between the welding device 5 and the rotating device 4, which is used for circularly welding the spherical crown liner 1 and the spherical stainless steel plate 2. By respectively setting the pressing device 3, the rotating device 4, and the welding device 5, it is possible to press the spherical stainless steel plate 2 onto the spherical crown liner 1 while the rotating device 4 drives the spherical crown liner 1 and the spherical stainless steel plate 2 to rotate simultaneously. The welding device 5 circularly welds the rotating spherical crown liner 1 and spherical stainless steel plate 2, so that the central axes of the spherical crown liner 1 and the spherical stainless steel plate 2 always remain coincident, avoiding relative movement between the spherical crown liner 1 and the spherical stainless steel plate 2, so that the spherical crown liner 1 and the spherical stainless steel plate 2 can be evenly stressed during installation. Moreover, through the rotation of the rotating device 4, manual welding is no longer required, thereby reducing welding errors, making the welding more stable and accurate, improving the qualified rate of products, reducing welding time, improving work efficiency, and thus realizing automatic welding of the spherical crown liner 1 and the spherical stainless steel plate.

[0040] Further, the pressing device 3 includes a hydraulic cylinder 31 and a pressing mechanism 32. The fixed end of the hydraulic cylinder 31 is detachably installed at the bottom of the frame 7 through a first mounting plate. The top of the pressing mechanism 32 is fixedly installed at the extending end of the hydraulic cylinder 31. The bottom of the pressing mechanism 32 can be attached to the spherical surface of the spherical stainless steel plate 2 through the extension of the hydraulic cylinder 31 to press the spherical stainless steel plate 2 onto the spherical crown liner 1. By setting the hydraulic cylinder 31 and the pressing mechanism 32, the hydraulic cylinder 31 can drive the pressing mechanism 32 to vertically lift and lower, so as to realize the pressing mechanism 32 pressing the spherical stainless steel plate 2 onto the spherical crown liner 1, and further keep the vertical central axes of the spherical crown liner 1 and the spherical stainless steel plate 2 always coincident.

[0041] Further, the pressing mechanism 32 includes a mounting member 321, a connecting member 322, a bearing 323, a connecting rod 324, a second mounting plate 325, and a pressing plate 326.

[0042] Specifically, the top of the mounting member 321 is fixedly connected to the extending end of the hydraulic cylinder 31. The top of the connecting member 322 is threadedly connected to the bottom of the mounting member 321, enabling detachable connection, that is, different-sized pressing plates 326 can be replaced at any time, so as to adapt to the pressing of the spherical crown liner 1 and the spherical stainless steel plate 2 of different sizes, making the adaptability of this tooling stronger. The outer ring of the bearing 323 is fixedly installed inside the bottom of the connecting member 322, and the inner wall of the inner ring of the bearing 323 is fixedly connected to the outer wall of the connecting rod 324. The bottom of the connecting rod 324 is fixedly connected to the top of the second mounting plate 325, and the bottom of the second mounting plate 325 is fixedly connected to the top of the pressing plate 326. The bottom of the pressing plate 326 can press the spherical stainless steel plate 2 against the spherical crown liner 1 through the extension of the hydraulic cylinder 31. The vertical central axes of the mounting member 321, the connecting member 322, the bearing 323, the connecting rod 324, the second mounting plate 325, and the pressing plate 326 coincide with the vertical central axes of the spherical crown liner 1 and the spherical stainless steel plate 2, and the inner ring of the bearing 323, the connecting rod 324, the second mounting plate 325, and the pressing plate 326 can rotate around the vertical central axis of the hydraulic cylinder 31 as the rotating device 4 rotates. By fixedly connecting the outer ring of the bearing 323 to the inside of the bottom of the connecting member 322 and the inner ring to the outer wall of the connecting rod 324, the pressing plate 326 can not only press the spherical crown liner 1 and the spherical stainless steel plate 2, but also enable the connecting rod 324 and the pressing plate 326 to rotate as the rotating device 4 drives the spherical crown liner 1 and the spherical stainless steel plate 2 to rotate, so that the pressing plate 326 can always press the spherical stainless steel plate 2 against the spherical crown liner 1, keeping the vertical central axes of the spherical crown liner 1 and the spherical stainless steel plate 2 coincident at all times. Preferably, the bottom of the pressing plate 326 is a spherical concave surface, which can make the pressing plate 326 more adaptable to the outer wall shape of the spherical stainless steel plate 2, so that the pressing plate 326 fits more closely to the outer wall of the spherical stainless steel plate 2 when pressing the spherical stainless steel plate 2.

[0043] Further, the pressing device 3 further includes a plurality of guiding mechanisms 33. Among them, the tops of the plurality of guiding mechanisms 33 are all fixedly connected to the outer wall of the fixed cylinder of the hydraulic cylinder 31. The bottom of the guiding mechanism 33 is rotatably connected to the top of the second mounting plate 325, and the plurality of guiding mechanisms 33 are circumferentially arrayed around the vertical central axis of the hydraulic cylinder 31. The guiding mechanism 33 can guide the vertical telescopic direction of the hydraulic cylinder 31. By providing a plurality of guiding mechanisms 33, it can guide and limit the telescopic direction of the hydraulic cylinder 31, preventing the telescopic direction of the hydraulic cylinder 31 from deviating.

[0044] Specifically, the guiding mechanism 33 includes a mounting block 331, a telescopic rod 332, and a roller 333. The side wall of the mounting block 331 is fixedly connected to the outer wall of the fixed cylinder. One end of the telescopic rod 332 is fixedly connected to the bottom of the mounting block 331, and the other end of the telescopic rod 332 is movably connected to the top of the roller 333. The roller 333 is arranged horizontally. The top of the second mounting plate 325 is provided with a circular card slot 3251, and the vertical cross-section of the circular card slot 3251 is an inverted T shape. The roller 333 is placed in the circular card slot 3251, and the rolling surface of the roller 333 is attached to the inner wall of the circular card slot 3251. The top wall and the bottom wall of the roller 333 are respectively attached to the top wall and the bottom wall of the circular card slot 3251. The circular card slot 3251 can limit the roller 333, so that the telescopic rod 332 can be engaged with the circular card slot 3251 due to the roller 333. Moreover, since the mounting block 331 is fixedly installed on the outer wall of the fixed cylinder, the telescopic rod 332 is fixed and immovable. Through the roller 333 and the circular card slot 3251, the second mounting plate 325 can rotate without being restricted by the telescopic rod 332, so that the pressing plate 326 can still rotate along with the rotation of the spherical crown liner 1 and the spherical stainless steel plate 2. Moreover, by arranging the roller 333, the friction between the telescopic rod 332 and the circular card slot 3251 can be reduced, and the rotation of the second mounting plate 325 can be made smoother.

[0045] Furthermore, the rotating device 4 includes a reduction motor 41, a rotating seat 42, a placing table 43, and a shock-absorbing mechanism 44. The bottom of the rotating seat 42 is attached to the top of the working platform 6. There is a shock-absorbing space inside the rotating seat 42. Both ends of the shock-absorbing mechanism 44 are fixedly connected to the bottom wall of the shock-absorbing space and the bottom of the placing table 43 respectively. The flat surface of the spherical crown liner 1 is placed on the top of the placing table 43. The reduction motor 41 is fixedly installed at the bottom of the working platform 6, and the output shaft of the reduction motor 41 passes through the working platform 6 and is fixedly connected to the bottom of the rotating seat 42. By arranging the reduction motor 41, the rotating seat 42, the placing table 43, and the shock-absorbing mechanism 44, the reduction motor 41 can drive the rotating seat 42 to rotate, and then the spherical crown liner 1 and the spherical stainless steel plate 2 placed on the placing table 43 can rotate along with the rotation of the rotating seat 42. Moreover, by arranging the shock-absorbing mechanism 44, when the pressing plate 326 presses the spherical crown liner 1 and the spherical stainless steel plate 2, the shock-absorbing mechanism 44 can buffer the spherical crown liner 1, the spherical stainless steel plate 2, and the placing table 43, avoiding excessive rigid pressing of the pressing plate 326 on the spherical crown liner 1 and the spherical stainless steel plate 2 and preventing damage to the spherical crown liner 1 and the spherical stainless steel plate 2. Among them, the shock-absorbing mechanism 44 can be multiple springs, memory sponges, etc. The reduction motor 41 can make the rotating seat 42 rotate slowly, so that the spherical crown liner 1 and the spherical stainless steel plate 2 can be more uniform during welding and the welding quality is better.

[0046] Further, a plurality of circular grooves 431 are provided on the top of the placing table 43, and the diameters of the plurality of circular grooves 431 decrease sequentially from outside to inside. The plurality of circular grooves 431 extend downward in a stepped shape from outside to inside, which can accommodate the spherical crown liners 1 with different diameters, so as to weld the spherical crown liners 1 and the spherical stainless steel plates 2 with different diameters, thereby improving the adaptability of this tooling. Preferably, the top of the placing table 43 is higher than the top of the rotating seat 42, which can make there be a large vertical moving distance between the placing table 43 and the rotating seat 42, so that the pressing plate 326 can be more tightly pressed when pressing the spherical crown liner 1 and the spherical stainless steel plate 2, and thus be more stable.

[0047] Furthermore, the welding device 5 includes a welding torch 51 and a hinged leg 52. One end of the hinged leg 52 is fixedly installed on the working platform 6, and the other end is hinged to the outer wall of the welding torch 51. The welding torch 51 can change the angle with the horizontal plane, thereby adapting to welding the spherical crown liners 1 and the spherical stainless steel plates 2 with different diameters, making the adaptability of the welding device 5 stronger. At the same time, through the hinged leg 52, the welding torch 51 can also change the horizontal distance from the rotating device 4, so that the welding device 5 is more suitable for welding the spherical crown liners 1 and the spherical stainless steel plates 2 with different diameters.

[0048] Through the above structure, the working principle of a welding tooling for welding spherical crown liners and spherical stainless steel plates in this embodiment is as follows:

[0049] As Figures 1 - 7 shown, first, assemble and install this tooling. In the initial state, the hydraulic cylinder 31 is in the non-extended state. After installation, place the flat surface of the spherical crown liner 1 in the circular groove 431 of the placing table 43, then place the spherical stainless steel plate 2 above the spherical crown liner 1 and make the spherical concave surface of the spherical stainless steel plate 2 fit with the spherical convex surface of the spherical crown liner 1, so that the central axis of the spherical stainless steel plate 2 coincides with the central axis of the spherical crown liner 1. Drive the hydraulic cylinder 31 to make the hydraulic cylinder 31 extend, and make the spherical concave surface of the pressing plate 326 fit with the spherical convex surface at the top of the spherical stainless steel plate 2, so that the spherical stainless steel plate 2 and the spherical crown liner 1 are kept in close fit. In order to make the spherical stainless steel plate 2 and the spherical crown liner 1 in close fit, the hydraulic cylinder 31 needs to continue to extend to ensure the close fit of the spherical stainless steel plate 2 and the spherical crown liner 1, and thus make the central axis of the spherical stainless steel plate 2 coincide with the central axis of the spherical crown liner 1. (Here, it should be noted that when placing the spherical stainless steel plate 2 on the spherical crown liner 1, manual centering can be performed by hand, or centering can be achieved through a laser sensor and a centering mechanism. The centering mechanism is an existing centering mechanism. For example, a plurality of hydraulic rods are installed on the side wall of the frame 7. During centering, the plurality of hydraulic rods extend simultaneously to abut against the spherical stainless steel plate 2 and the spherical crown liner 1, so that the central axes of the spherical stainless steel plate 2 and the spherical crown liner 1 coincide, realizing the centering of the spherical stainless steel plate 2 and the spherical crown liner 1)

[0050] When there is no relative movement between the spherical crown liner 1 and the spherical stainless steel plate 2, the hydraulic cylinder 31 stops extending and remains fixed. When the hydraulic cylinder 31 continuously presses the spherical stainless steel plate 2 against the spherical crown liner 1, the shock absorption mechanism 44 compresses. Eventually, the shock absorption mechanism 44 provides an upward resilience force to the placement table 43, and the hydraulic cylinder 31 provides a pressure to the spherical stainless steel plate 2 and the spherical crown liner 1. The resilience force is equal to the pressure, so that the spherical stainless steel plate 2 and the spherical crown liner 1 remain fixed.

[0051] Immediately afterwards, according to the hinge of the articulated leg 52, the angle of the welding torch 51 and the distance between the welding torch 51 and the spherical crown liner 1 and the spherical stainless steel plate 2 are changed, so that the welding torch 51 can be aligned with the contact edge of the spherical crown liner 1 and the spherical stainless steel plate 2. Then, the reduction motor 41 is driven to drive the rotating seat 42 to rotate. At the same time, the spherical crown liner 1 and the spherical stainless steel plate 2 rotate with the rotation of the rotating seat 42. Due to the action of the bearing 323, the pressing plate 326 rotates with the rotation of the spherical crown liner 1 and the spherical stainless steel plate 2. At the same time, the welding torch 51 is driven to gradually weld the contact edge of the spherical crown liner 1 and the spherical stainless steel plate 2.

[0052] After the welding is completed, the welded spherical crown liner 1 and spherical stainless steel plate 2 are removed, and another spherical crown liner 1 and spherical stainless steel plate 2 to be welded are placed on the placement table 43. The welding is continued according to the above steps, which will not be elaborated here.

[0053] In the description of the present invention, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more, unless otherwise specifically defined.

[0054] In the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and defined, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.

[0056] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples", etc. refer to that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0057] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate, characterized in that: It comprises a pressing device (3), a rotating device (4), a welding device (5), a working platform (6) and a frame (7); The rotating device (4) is fixedly mounted on the working platform (6), the plane of the spherical crown lining plate (1) is placed on the top of the rotating device (4), the spherical stainless steel plate (2) is stacked on the spherical crown lining plate (1) and the central axis of the spherical stainless steel plate (2) always coincides with the central axis of the spherical crown lining plate (1), and the rotating device (4) can drive the spherical crown lining plate (1) and the spherical stainless steel plate (2) to rotate around the vertical center line of the rotating device (4); The pressing device (3) is located above the spherical stainless steel plate (2) and the top of the pressing device (3) is fixedly mounted on the frame (7), the bottom of the frame (7) is fixedly connected to the top of the working platform (6), the pressing device (3) can extend vertically to press the spherical stainless steel plate (2) on the spherical crown lining (1), and the bottom of the pressing device (3) can rotate with the rotation of the rotating device (4); The welding device (5) is installed on the working platform (6) and there is a gap between the welding device (5) and the rotating device (4), and is used for annularly welding the spherical crown lining plate (1) and the spherical stainless steel plate (2).

2. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate as claimed in claim 1, characterized in that: The pressing device (3) comprises a hydraulic cylinder (31) and a pressing mechanism (32); The fixed end of the hydraulic cylinder (31) is detachably mounted on the bottom of the frame (7) via a first mounting plate, the top of the pressing mechanism (32) is fixedly mounted on the protruding end of the hydraulic cylinder (31), and the bottom of the pressing mechanism (32) can be fitted with the spherical surface of the spherical stainless steel plate (2) through the extension of the hydraulic cylinder (31) to press the spherical stainless steel plate (2) onto the spherical crown lining (1).

3. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate as claimed in claim 2, characterized in that: The pressing mechanism (32) comprises a mounting member (321), a connecting member (322), a bearing (323), a connecting rod (324), a second mounting plate (325) and a pressing plate (326); The top of the mounting member (321) is fixedly connected to the protruding end of the hydraulic cylinder (31), the top of the connecting member (322) is threadedly connected to the bottom of the mounting member (321), the outer ring of the bearing (323) is fixedly mounted inside the bottom of the connecting member (322), the inner wall of the inner ring of the bearing (323) is fixedly connected to the outer wall of the connecting rod (324), the bottom of the connecting rod (324) is fixedly connected to the top of the second mounting plate (325), the bottom of the second mounting plate (325) is fixedly connected to the top of the pressing plate (326), and the bottom of the pressing plate (326) can press the spherical stainless steel plate (2) on the spherical crown lining plate (1) through the extension of the hydraulic cylinder (31); The vertical center axis of the mounting member (321), the connecting member (322), the bearing (323), the connecting rod (324), the second mounting plate (325) and the pressure plate (326) coincides with the vertical center axis of the spherical crown lining plate (1) and the spherical stainless steel plate (2), and the inner ring of the bearing (323), the connecting rod (324), the second mounting plate (325) and the pressure plate (326) can rotate around the vertical center axis of the hydraulic cylinder (31) as the rotating device (4) rotates.

4. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate as claimed in claim 3, characterized in that: The bottom of the pressing plate (326) is a spherical concave surface.

5. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate as claimed in claim 3, characterized in that: The pressing device (3) further comprises a plurality of guiding mechanisms (33); The tops of the multiple guide mechanisms (33) are fixedly connected to the outer wall of the fixed cylinder of the hydraulic cylinder (31), the bottoms of the guide mechanisms (33) are rotatably connected to the top of the second mounting plate (325), and the multiple guide mechanisms (33) are circumferentially arrayed around the vertical center axis of the hydraulic cylinder (31), and the guide mechanisms (33) are capable of guiding the vertical extension and contraction direction of the hydraulic cylinder (31).

6. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate as claimed in claim 5, characterized in that: The guiding mechanism (33) comprises a mounting block (331), a telescopic rod (332) and a roller (333); The side wall of the mounting block (331) is fixedly connected to the outer wall of the fixing cylinder, one end of the telescopic rod (332) is fixedly connected to the bottom of the mounting block (331), and the other end of the telescopic rod (332) is movably connected to the top of the roller (333), and the roller (333) is arranged horizontally; A circular groove (3251) is provided on the top of the second mounting plate (325) and the vertical cross-section of the circular groove (3251) is an inverted T-shape; the roller (333) is placed in the circular groove (3251) and the rolling surface of the roller (333) is in contact with the inner wall of the circular groove (3251); the top wall and the bottom wall of the roller (333) are respectively in contact with the top wall and the bottom wall of the circular groove (3251).

7. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate as claimed in claim 1, characterized in that: The rotating device (4) comprises a reduction motor (41), a rotating seat (42), a placement table (43) and a shock absorbing mechanism (44); The bottom of the rotating seat (42) is fitted with the top of the working platform (6), a shock-absorbing space is provided inside the rotating seat (42), two ends of the shock-absorbing mechanism (44) are respectively fixedly connected to the bottom wall of the shock-absorbing space and the bottom of the placement platform (43), the plane of the spherical crown lining (1) is placed on the top of the placement platform (43), the reduction motor (41) is fixedly installed on the bottom of the working platform (6), and the output shaft of the reduction motor (41) passes through the working platform (6) and is fixedly connected to the bottom of the rotating seat (42).

8. A welding tool for welding a spherical crown lining plate and a spherical stainless steel plate as claimed in claim 7, characterized in that: A plurality of circular grooves (431) are provided on the top of the placement platform (43), and the diameters of the plurality of circular grooves (431) decrease sequentially from the outside to the inside, and the plurality of circular grooves (431) are in a step-like shape extending downward from the outside to the inside; The top of the placement platform (43) is higher than the top of the rotating seat (42).

9. A welding tool for welding a spherical cap lining plate and a spherical stainless steel plate as claimed in claim 1, characterized in that: The welding device (5) comprises a welding gun (51) and an articulated leg (52); One end of the hinged leg (52) is fixedly mounted on the working platform (6), and the other end is hinged to the outer wall of the welding gun (51), and the welding gun (51) can change the angle between the welding gun (51) and the horizontal plane.

10. A welding tool for welding a spherical cap lining plate and a spherical stainless steel plate according to any one of claims 1 to 9, characterized in that: The spherical crown lining plate (1) and the spherical stainless steel plate (2) are components of a spherical bridge bearing.

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