Automatic welding equipment and welding method for slewing bearing on tower crane

Abstract

The invention discloses automatic welding equipment and a welding method for a slewing bearing on a tower crane, and particularly relates to the technical field of automatic welding of the slewing bearing on the tower crane. The automatic welding equipment comprises a welding mechanical arm, an upper overturning supporting plate is installed below the welding mechanical arm, and a linkage overturning assembly is arranged below the upper overturning supporting plate; the linkage overturning assembly comprises a lower overturning supporting plate arranged below the upper overturning supporting plate, two linkage rotating blocks are fixed to one side of the lower overturning supporting plate, and a fixed lantern ring support is welded to one side of the upper overturning supporting plate. The linkage overturning assembly is adopted, the included angle formed by the upper overturning supporting plate and the lower overturning supporting plate is 90 degrees, in this way, attached limiting overturning is achieved during overturning, shaking is not prone to being caused, stability is better, after overturning, the lower overturning supporting plate automatically overturns by 90 degrees, and the upper surface of an upper slewing bearing of the tower crane is not limited any more; therefore, the turning and welding operation of the slewing bearing on the tower crane can be completed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and more specifically, to automatic welding equipment and a welding method for a slewing support on a tower crane. Background Art

[0002] Tower cranes are important equipment in construction. Their upper slewing bearings are key components that connect the tower body and the slewing system. They not only bear the rotating load of the crane, but also affect the stability and safety of the entire machine. Traditional upper slewing bearing welding usually relies on manual operation, which has problems such as low welding efficiency, poor quality stability, and high labor intensity. In addition, unevenness and welding defects during the welding process may also lead to a decrease in bearing performance, affecting the service life and safety of the crane.

[0003] The invention patent with the patent application publication number CN104588951B in the prior art discloses a tower top ear plate positioning tool and welding device for the upper support of a tower crane, which belongs to the technical field of tower cranes. The invention includes a platform-type tool base, a support, a threaded mandrel, a threaded platform, a crossbeam, a positioning seat, an upper support box and an ear plate, wherein the support is arranged on the platform-type tool base, the threaded mandrel is arranged on the support, the threaded platform is connected to the threaded mandrel, the crossbeam is connected to the threaded mandrel, the positioning seat is connected to the crossbeam, the upper support box is arranged on the platform-type tool base, and the ear plate is connected to the upper support box. The invention has a reasonable structure, which can make the ear plate quickly positioned during loading, easy to weld and highly stable. However, there are certain defects in the use of the welding device. Since the slewing support on the tower crane is heavy, after the upper surface of the slewing support on the tower crane is welded, it is necessary to use a crane hoisting equipment to flip it to the other side to continue welding. In this way, the slewing support on the tower crane will shake greatly when the crane is lifted, which poses certain safety hazards and is not conducive to stable flipping and switching of different welding surfaces, resulting in low welding efficiency. Summary of the invention

[0004] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. In order to overcome the above-mentioned defects of the prior art, the present invention provides an automatic welding device and a welding method for the slewing support on a tower crane, so as to solve the problem mentioned in the above-mentioned background technology that the slewing support on the tower crane will cause a large shaking amplitude when the crane is hoisted, there are certain safety hazards, and it is not conducive to stable flipping and switching between different welding surfaces, and the welding efficiency is low.

[0005] To achieve the above object, the present invention provides the following technical solution: an automatic welding device for an upper slewing support of a tower crane, comprising a welding mechanical arm, an upper flip support plate is installed below the welding mechanical arm, and a linkage flip assembly is provided below the upper flip support plate; The linkage flip assembly includes a lower flip support plate arranged below the upper flip support plate, and two linkage rotating blocks are fixed to one side of the lower flip support plate, a fixed collar bracket is welded to one side of the upper flip support plate, a hydraulic cylinder is fixed to the bottom end of the fixed collar bracket, a driving disk is provided on one side of the hydraulic cylinder, a reduction drive motor for providing rotational force to the fixed collar bracket is provided cocentrically with one end face of the driving disk, a rotating shaft is provided inside the hydraulic cylinder and near its bottom end, a reduction motor is fixed cocentrically with one end of the rotating shaft, and a plurality of limit support blocks are equidistantly distributed in a circular ring on the outer wall of the rotating shaft and near its two ends.

[0006] Preferably, the two end surfaces of the driving disk are fixedly connected to the hydraulic cylinder and the output end of the reduction driving motor respectively, the fixed collar bracket is made of stainless steel, the rotating shaft and the hydraulic cylinder are movably connected through a bearing, and the outer wall of the rotating shaft is polished.

[0007] Preferably, a limit ring is provided on the outside of the rotating shaft and on both sides of the hydraulic cylinder, the two limit rings are welded and fixed to the rotating shaft, and the two limit rings are symmetrically arranged about the fixed ring bracket, a fixed bracket is installed on the outer wall of the reduction motor and on one side of the hydraulic cylinder, and the two ends of the fixed bracket are respectively welded and fixed to the reduction motor and the hydraulic cylinder, a fence is installed on one side of the welding robot arm, a PLC control cabinet is provided on the inner wall of the fence, and an external control button is provided on one side of the outer wall of the fence.

[0008] Preferably, a first bidirectional transmission screw is installed inside the lower flip support plate, and a first servo drive motor is installed at one end of the first bidirectional transmission screw and at the outer wall position of the lower flip support plate, a second bidirectional transmission screw is provided inside the upper flip support plate, and a second servo drive motor is fixed cocentrically at one end of the second bidirectional transmission screw, and a locking assembly is provided on the outside of the first bidirectional transmission screw and the second bidirectional transmission screw, and the locking assembly includes a first threaded collar support plate and a second threaded collar support plate arranged on the outer wall of the first bidirectional transmission screw, and both sides of the first threaded collar support plate and the second threaded collar support plate are integrally formed with side brackets by die-casting, a pushing cylinder is provided on one side of the side bracket, and a pushing support plate for supporting the side of the upper slewing support of the tower crane is fixed at the pushing end of the pushing cylinder, and a plurality of sliding blocks are provided in the gap formed between the lower flip support plate and the second threaded collar support plate, and the inner wall of the sliding block contacts and is slidably connected with a sliding track arranged on the lower flip support plate.

[0009] Preferably, a sleeve rotating plate is provided at the outer wall of the upper flip support plate and at a position away from the fixed sleeve ring bracket, and a guide support assembly is welded on the top of the sleeve rotating plate, and the guide support assembly comprises a first inner ring bracket fixedly connected to the top of the sleeve rotating plate, and a first semicircular rotating ring is provided on the top of the first inner ring bracket, and a linkage sleeve rotating plate is installed vertically below the sleeve rotating plate, and a second semicircular rotating ring with the same shape as the first semicircular rotating ring is welded at the bottom of the linkage sleeve rotating plate, and a second semicircular rotating ring with the same shape as the first semicircular rotating ring is provided below the outer wall of the second inner ring bracket, and limiting semicircular rings are provided on both sides of the second semicircular rotating ring for limiting the second semicircular rotating ring front and rear, and a supporting semicircular ring is welded on the bottom end of the outer wall of the limiting semicircular ring, and a concave support plate with a vertical cross-section shape set to be concave is installed at the bottom end of the supporting semicircular ring, and a plurality of sleeve rolling balls are provided in the semicircular gap formed between the second semicircular rotating ring and the supporting semicircular ring.

[0010] A welding method for automatic welding equipment of a slewing support on a tower crane, the specific use steps are as follows: Step 1: When welding the upper surface of the upper slewing support of the tower crane, the fixed collar bracket can be pushed upward through the hydraulic pump station, and the fixed collar bracket drives the upper flip support plate to move upward, so that the upper flip support plate can be moved upward, so that a gap is formed between the upper surface of the upper slewing support of the tower crane and the upper flip support plate, so that the edge of the upper surface of the upper slewing support of the tower crane can be welded, and the welding robot arm is controlled by the external control button, so that the PLC control cabinet is automatically operated to realize the welding of the edge of the upper surface of the upper slewing support of the tower crane by the welding robot arm; When the bottom end of the fixed collar bracket is completely in contact with the upper surface of the hydraulic cylinder, the first servo drive motor is started to drive the first bidirectional transmission screw to rotate forward, and the second servo drive motor drives the second bidirectional transmission screw to rotate forward, so that the first threaded collar bracket and the second threaded collar bracket on the lower flip support plate move relatively, and the first threaded collar bracket and the second threaded collar bracket on the upper flip support plate also move relatively, and the second threaded collar bracket drives the two side brackets to move, so that the two second threaded collar brackets can be squeezed at the left and right sides of the slewing support on the tower crane, and then the two pushing cylinders are started to drive the pushing support plates to push, and the two pushing support plates can be squeezed at the front and rear positions of the slewing support on the tower crane respectively, so that the slewing support on the tower crane can be fully double-fitted, squeezed and locked; Step three, when flipping, you can start the drive disk to rotate 180 degrees, the drive disk drives the hydraulic cylinder to realize the rotation operation, the hydraulic cylinder drives the rotating shaft to rotate the two linked rotating blocks, and the linked rotating blocks drive the lower flip support plate to rotate, the hydraulic cylinder drives the fixed collar bracket to rotate the upper flip support plate, so that the upper slewing support of the tower crane located between the upper flip support plate and the lower flip support plate can be rotated 180 degrees, so that the upper flip support plate and the lower flip support plate can firmly fit the upper slewing support of the tower crane to limit the flip, so that the flipping stability is better, when the lower flip support plate is located above the upper flip support plate, start the first servo drive motor to drive the first bidirectional transmission screw to reverse, and at the same time the lower flip support plate The four pushing cylinders on the upper part are contracted, and the first threaded collar support plate and the second threaded collar support plate move in opposite directions, so that the second threaded collar support plate and the first threaded collar support plate on the lower flip support plate no longer play a locking operation on the upper slewing support of the tower crane, while the second servo drive motor on the upper flip support plate remains stationary, and the reduction motor is started to drive the rotating shaft to rotate, and the rotating shaft drives multiple limit support blocks to rotate, and the fixed collar bracket drives the linkage rotating block to rotate upward, and the linkage rotating block drives the lower flip support plate to flip upward, so that the angle formed by the upper flip support plate and the lower flip support plate is ninety degrees, and the internal and edge parts of the flip surface of the upper slewing support of the tower crane can be automatically welded by the welding robot arm; Step 4. During the stable limited flipping, the concave support plate plays a role of vertical support for the supporting semicircular ring, and the supporting semicircular ring plays a supporting role for the two limited semicircular rings. When the upper flipping support plate drives the sleeve rotating plate to rotate, the sleeve rotating plate drives the first inner ring bracket to rotate the first semicircular rotating ring, and the lower flipping support plate drives the linkage sleeve rotating plate to rotate the second inner ring bracket, and the second inner ring bracket drives the second semicircular rotating ring to rotate one hundred and eighty degrees. The second semicircular rotating ring can rotate at the position between the two limited semicircular rings, and the second semicircular rotating ring contacts multiple sleeve balls to realize rotation, and multiple sleeve balls can roll on the supporting semicircular ring, and the first semicircular rotating ring can enter the position between the two limited semicircular rings. In this way, during the flipping process, the gravity on the first semicircular rotating ring and the second semicircular rotating ring can be completely directed to the supporting semicircular ring.

[0011] Technical effects and advantages of the present invention: 1. The present invention adopts a linkage flip assembly to start the driving disk to rotate 180 degrees, the driving disk drives the hydraulic cylinder to realize the rotation operation, the hydraulic cylinder drives the rotating shaft to rotate the two linkage rotating blocks, the hydraulic cylinder drives the rotating shaft to rotate the two linkage rotating blocks, and the upper slewing support of the tower crane located between the upper flip support plate and the lower flip support plate is rotated 180 degrees, the upper flip support plate and the lower flip support plate can firmly fit the upper slewing support of the tower crane to limit the flip, and when the lower flip support plate is located above the upper flip support plate, the reduction motor is started to drive the rotating shaft to rotate, and the fixed collar bracket drives the linkage rotating block to rotate upward, and the angle formed by the upper flip support plate and the lower flip support plate is 90 degrees. In this way, the fit-limited flipping is realized during flipping, and it is not easy to cause shaking and has better stability. After flipping, the lower flip support plate automatically flips 90 degrees and no longer limits the upper surface of the upper slewing support of the tower crane, and the flip welding operation of the upper slewing support of the tower crane can be completed; 2. The present invention uses a locking assembly to start the first servo drive motor to drive the first bidirectional transmission screw to rotate forward, and the second servo drive motor drives the second bidirectional transmission screw to rotate forward, and the first threaded collar support plate and the second threaded collar support plate on the lower flip support plate move relatively, and the first threaded collar support plate and the second threaded collar support plate on the upper flip support plate also move relatively, and the two second threaded collar support plates are squeezed at the left and right sides of the slewing support on the tower crane, and the two push support plates can be squeezed at the front and rear positions of the slewing support on the tower crane respectively, to achieve multi-point limit operation, to ensure that the slewing support on the tower crane achieves multi-directional limit locking, and to achieve double locking, and better stability during flipping and welding; 3. The present invention adopts a guide support assembly to make the concave support plate play a role of vertical support for the supporting semicircular ring, and the supporting semicircular ring plays a supporting role for the two limiting semicircular rings. The sleeve rotating plate drives the first inner ring bracket to rotate the first semicircular rotating ring, and the lower flip support plate drives the linkage sleeve rotating plate to rotate the second inner ring bracket. The second semicircular rotating ring can rotate at the position between the two limiting semicircular rings, and the second semicircular rotating ring contacts a plurality of sleeve balls to realize rotation. During the flipping process, the gravity on the first semicircular rotating ring and the second semicircular rotating ring can be completely guided to the supporting semicircular ring, so as to realize the stable rotation operation of the circular ring and ensure that it is not easy to shake during the flipping process; In summary, through the mutual influence of the above-mentioned multiple effects, the lower flip support plate automatically flips 90 degrees after flipping and no longer limits the upper surface of the slewing support on the tower crane. The flipping welding operation of the slewing support on the tower crane can be completed, and multi-point limit operation can be realized to ensure that the slewing support on the tower crane can achieve multi-directional limit locking and double locking. The stability during flipping and welding is better. During the flipping process, the gravity on the first semicircular rotating ring and the second semicircular rotating ring can be completely directed to the supporting semicircular ring. In summary, the high stability of the flip welding can be effectively improved, and the slewing support on the tower crane can be quickly flipped to reach the specified welding surface position, with better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The present invention is a schematic structural diagram of the automatic welding equipment for the upper slewing support of a tower crane.

[0013] Figure 2 It is a schematic diagram of the structure of the connection between the upward flip support plate and the fixed collar bracket of the present invention.

[0014] Figure 3 It is a schematic diagram of the vertical cross-section structure of the fixed collar bracket of the present invention.

[0015] Figure 4 It is a schematic diagram of the split structure between the rotating shaft and the reduction motor of the present invention.

[0016] Figure 5 It is a schematic diagram of the top view of the downward flip support plate of the present invention.

[0017] Figure 6 It is a bottom view structural schematic diagram of the fixed collar bracket of the present invention.

[0018] Figure 7 It is a schematic diagram of the structure of the connection between the supporting semicircular ring and the concave support plate of the present invention.

[0019] Figure 8 It is a schematic diagram of the vertical cross-section structure of the second semicircular rotating ring and the supporting semicircular ring of the present invention.

[0020] The accompanying drawings are marked as follows: 1, welding robot arm; 2, upper flip support plate; 3, lower flip support plate; 4, fixed collar bracket; 5, linkage rotating block; 6, driving disk; 7, reduction drive motor; 8, rotating shaft; 9, reduction motor; 10, limit support block; 11, limit ring; 12, fixed bracket; 13, fence; 14, PLC control cabinet; 15, external control button; 16, first two-way transmission screw; 17, first servo drive motor; 18, second two-way transmission screw; 19, second servo drive driving motor; 20, first threaded sleeve support plate; 21, second threaded sleeve support plate; 22, side bracket; 23, pushing cylinder; 24, pushing support plate; 25, sliding block; 26, sliding track; 27, sleeve rotating plate; 28, first inner ring bracket; 29, first semicircular rotating ring; 30, linkage sleeve rotating plate; 31, second inner ring bracket; 32, second semicircular rotating ring; 33, limiting semicircular ring; 34, supporting semicircular ring; 35, concave support plate; 36, sleeve ball; 37, hydraulic cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] As attached Figure 1-8 The automatic welding equipment for the slewing support on a tower crane is shown. The mobile base is provided with a linkage flip assembly, a locking assembly, and a guide support assembly. The arrangement of each assembly can play a double-sided fitting limit flipping role for the slewing support on the tower crane, with better stability, less prone to shaking, and higher flip line efficiency. The specific structural arrangement of each assembly is as follows: In some embodiments, Figure 1-4 As shown, the linkage flip assembly includes a lower flip support plate 3 arranged below the upper flip support plate 2, and two linkage rotating blocks 5 are fixed on one side of the lower flip support plate 3, a fixed collar bracket 4 is welded on one side of the upper flip support plate 2, a hydraulic cylinder 37 is fixed on the bottom end of the fixed collar bracket 4, a driving disk 6 is provided on one side of the hydraulic cylinder 37, a reduction driving motor 7 for providing a rotating force to the fixed collar bracket 4 is provided on one end surface of the driving disk 6 and cocentrically, and a rotating shaft 8 is provided inside the hydraulic cylinder 37 and near its bottom end; When the present embodiment is used, the driving plate 6 can be started to rotate 180 degrees, the driving plate 6 drives the hydraulic cylinder 37 to realize the rotation operation, the hydraulic cylinder 37 drives the rotating shaft 8 to rotate the two linked rotating blocks 5, the lower flip support plate 3 rotates, the hydraulic cylinder 37 drives the fixed collar bracket 4 to rotate the upper flip support plate 2, the upper flip support plate 2 and the lower flip support plate 3 can firmly fit the upper slewing support of the tower crane and flip in a limited position. When the lower flip support plate 3 is located above the upper flip support plate 2, the second The threaded collar support plate 21 and the first threaded collar support plate 20 no longer play a locking role on the upper slewing support of the tower crane, and the second servo drive motor 19 on the upper flip support plate 2 remains stationary. The reduction motor 9 is started to drive the rotating shaft 8 to rotate the multiple limit support blocks 10. The fixed collar bracket 4 drives the linkage rotating block 5 to rotate upward. The angle formed by the upper flip support plate 2 and the lower flip support plate 3 is ninety degrees. The internal and edge parts of the flip surface of the upper slewing support of the tower crane can be automatically welded by the welding robot arm 1.

[0023] In some embodiments, Figure 1-3 As shown, a limiting ring 11 is provided on the outside of the rotating shaft 8 and at both sides of the hydraulic cylinder 37. The two limiting rings 11 are welded and fixed to the rotating shaft 8, and the two limiting rings 11 are symmetrically arranged about the fixed collar bracket 4, so that the limiting rings 11 can limit the two sides of the hydraulic cylinder 37 to ensure that the rotating shaft 8 rotates stably inside the hydraulic cylinder 37 and is not easy to cause deviation. A fixing bracket 12 is installed on the outer wall of the reduction motor 9 and at one side of the hydraulic cylinder 37. The two ends of the fixing bracket 12 are respectively connected to the reduction motor 9 and the hydraulic cylinder 37. They are welded and fixed between them so that the fixed bracket 12 can support the reduction motor 9 and the hydraulic cylinder 37, thereby increasing the high stability of the reduction motor 9 and the hydraulic cylinder 37 when in use. A fence 13 is installed on one side of the welding robot arm 1, and a PLC control cabinet 14 is provided on the inner wall of the fence 13, and an external control button 15 is provided on one side of the outer wall of the fence 13, so that the welding robot arm 1 can be controlled to operate by the external control button 15 on the outside of the fence 13, and the PLC control cabinet 14 can automatically control the welding robot arm 1 to perform welding according to the coordinate points.

[0024] In some embodiments, Figure 5-6As shown, a first bidirectional transmission screw 16 is installed inside the lower flip support plate 3, and a first servo drive motor 17 is installed at one end of the first bidirectional transmission screw 16 and located at the outer wall position of the lower flip support plate 3, a second bidirectional transmission screw 18 is provided inside the upper flip support plate 2, and a second servo drive motor 19 is fixed cocentrically at one end of the second bidirectional transmission screw 18, and a locking assembly is provided outside the first bidirectional transmission screw 16 and the second bidirectional transmission screw 18, and the locking assembly includes a first threaded collar provided on the outer wall of the first bidirectional transmission screw 16 and the support plate 2 0 and the second threaded collar support plate 21, both sides of the first threaded collar support plate 20 and the second threaded collar support plate 21 are integrally formed with a side bracket 22 by die-casting, a push cylinder 23 is provided on one side of the side bracket 22, and a push support plate 24 for supporting the side of the upper slewing support of the tower crane is fixed at the push end of the push cylinder 23, and a plurality of sliding blocks 25 are provided in the gap formed between the lower flip support plate 3 and the second threaded collar support plate 21, and the inner wall of the sliding block 25 is in contact with and slidably connected to the sliding track 26 provided on the lower flip support plate 3; When the present embodiment is used, when the bottom end of the fixed collar bracket 4 completely contacts the upper surface position of the hydraulic cylinder 37, the first servo drive motor 17 is started to drive the first bidirectional transmission screw 16 to rotate forward, and the second servo drive motor 19 drives the second bidirectional transmission screw 18 to rotate forward, and the first threaded collar support plate 20 and the second threaded collar support plate 21 on the lower flip support plate 3 move relatively, and the first threaded collar support plate 20 and the second threaded collar support plate 21 on the upper flip support plate 2 also move relatively, so that the two second threaded collar support plates 21 are squeezed at the left and right sides of the slewing support on the tower crane, and at the same time, the second threaded collar support plate 21 drives the sliding block 25 to slide along the outer wall of the sliding track 26 to achieve stable sliding, and the two push cylinders 23 drive the push support plates 24 to push, and the two push support plates 24 can be squeezed at the front and rear positions of the slewing support on the tower crane respectively, so that the slewing support on the tower crane can be fully double-fitted, squeezed and locked.

[0025] In some embodiments, Figure 2 and 7As shown in -8, a sleeve rotating plate 27 is provided on the outer wall of the upper flip support plate 2 and at a position on one side away from the fixed sleeve ring bracket 4, and a guide support assembly is welded at the top of the sleeve rotating plate 27. The guide support assembly includes a first inner ring bracket 28 fixedly connected to the top of the sleeve rotating plate 27, and a first semicircular rotating ring 29 is provided at the top of the first inner ring bracket 28. A linkage sleeve rotating plate 30 is installed vertically below the sleeve rotating plate 27, and a second inner ring bracket 31 is welded at the bottom end of the linkage sleeve rotating plate 30, and the second inner ring bracket 31 A second semicircular rotating ring 32 having the same shape as the first semicircular rotating ring 29 is provided below the outer wall, and limiting semicircular rings 33 for limiting the second semicircular rotating ring 32 are provided on both sides thereof, and a supporting semicircular ring 34 is welded to the bottom end of the outer wall of the limiting semicircular ring 33, and a concave support plate 35 having a concave vertical cross-section is installed at the bottom end of the supporting semicircular ring 34, and a plurality of sleeve balls 36 are provided in the semicircular gap formed between the second semicircular rotating ring 32 and the supporting semicircular ring 34; When the present embodiment is used, the concave support plate 35 plays a role of vertical support for the supporting semicircular ring 34, and the supporting semicircular ring 34 plays a role of supporting the two limiting semicircular rings 33. The upper flip support plate 2 drives the sleeve rotating plate 27 to rotate, and the first inner ring bracket 28 causes the first semicircular rotating ring 29 to rotate. The lower flip support plate 3 drives the linkage sleeve rotating plate 30 to cause the second inner ring bracket 31 to rotate. The second semicircular rotating ring 32 can rotate at the position between the two limiting semicircular rings 33, and the second semicircular rotating ring 32 contacts multiple sleeve balls 36 to realize rotation. Multiple sleeve balls 36 can roll on the supporting semicircular ring 34, and the first semicircular rotating ring 29 can enter the position between the two limiting semicircular rings 33. During the flipping process, the gravity on the first semicircular rotating ring 29 and the second semicircular rotating ring 32 can be completely directed to the supporting semicircular ring 34.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change; Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic welding device for an upper slewing support of a tower crane, comprising a welding mechanical arm (1), an upper flip support plate (2) being installed below the welding mechanical arm (1), characterized in that: A linkage flip assembly is provided below the upper flip support plate (2); The linkage flip assembly comprises a lower flip support plate (3) arranged below the upper flip support plate (2), and two linkage rotating blocks (5) are fixed on one side of the lower flip support plate (3); a fixed collar bracket (4) is welded on one side of the upper flip support plate (2); a hydraulic cylinder (37) is fixed on the bottom end of the fixed collar bracket (4); a driving disk (6) is provided on one side of the hydraulic cylinder (37); a reduction drive motor (7) for providing a rotational force to the fixed collar bracket (4) is provided cocentrically with one end surface of the driving disk (6); a rotating shaft (8) is provided inside the hydraulic cylinder (37) and near its bottom end; a reduction motor (9) is fixed cocentrically with one end of the rotating shaft (8); and a plurality of limit support blocks (10) are equidistantly distributed in a circular ring on the outer wall of the rotating shaft (8) and near its two ends.

2. The automatic welding equipment for the upper slewing support of a tower crane according to claim 1 is characterized in that: The two end surfaces of the driving disk (6) are respectively fixedly connected to the hydraulic cylinder (37) and the output end of the reduction driving motor (7), and the fixed collar bracket (4) is made of stainless steel.

3. The automatic welding equipment for the upper slewing support of a tower crane according to claim 1 is characterized in that: The rotating shaft (8) and the hydraulic cylinder (37) are movably connected via a bearing, and the outer wall of the rotating shaft (8) is polished.

4. The automatic welding equipment for the upper slewing support of a tower crane according to claim 1 is characterized in that: Limiting rings (11) are provided outside the rotating shaft (8) and at positions on both sides of the hydraulic cylinder (37); the two limiting rings (11) are fixed to the rotating shaft (8) by welding, and the two limiting rings (11) are symmetrically arranged with respect to the fixed collar bracket (4).

5. The automatic welding equipment for the upper slewing support of a tower crane according to claim 1 is characterized in that: A fixing bracket (12) is installed on the outer wall of the reduction motor (9) and at a position on one side of the hydraulic cylinder (37), and two ends of the fixing bracket (12) are respectively welded and fixed to the reduction motor (9) and the hydraulic cylinder (37).

6. The automatic welding equipment for the upper slewing support of a tower crane according to claim 1 is characterized in that: A fence (13) is installed on one side of the welding robot arm (1), a PLC control cabinet (14) is provided on the inner wall of the fence (13), and an external control button (15) is provided on one side of the outer wall of the fence (13).

7. The automatic welding equipment for the upper slewing support of a tower crane according to claim 1 is characterized in that: A first bidirectional transmission screw (16) is installed inside the lower flip support plate (3), and a first servo drive motor (17) is installed at one end of the first bidirectional transmission screw (16) and located at an outer wall position of the lower flip support plate (3). A second bidirectional transmission screw (18) is installed inside the upper flip support plate (2), and a second servo drive motor (19) is fixed coaxially to one end of the second bidirectional transmission screw (18). The first bidirectional transmission screw (16) and the second bidirectional transmission screw (18) are both provided with locking members on their exteriors. The locking assembly comprises a first threaded collar support plate (20) and a second threaded collar support plate (21) which are arranged on the outer wall of a first bidirectional transmission screw rod (16); both sides of the first threaded collar support plate (20) and the second threaded collar support plate (21) are integrally formed with a side bracket (22) by die-casting; a push cylinder (23) is provided on one side of the side bracket (22); a push support plate (24) for supporting the side of a slewing support on a tower crane is fixed at the push end of the push cylinder (23).

8. The automatic welding equipment for the upper slewing support of a tower crane according to claim 7 is characterized in that: A plurality of sliding blocks (25) are provided in a gap formed between the lower flip support plate (3) and the second threaded collar support plate (21), and inner walls of the sliding blocks (25) are in contact with and slidably connected to sliding rails (26) provided on the lower flip support plate (3).

9. The automatic welding equipment for the upper slewing support of a tower crane according to claim 1 is characterized in that: A sleeve rotating plate (27) is provided on the outer wall of the upper flip support plate (2) and at a position on one side away from the fixed sleeve ring bracket (4). A guide support assembly is welded at the top of the sleeve rotating plate (27). The guide support assembly comprises a first inner ring bracket (28) fixedly connected to the top of the sleeve rotating plate (27). A first semicircular rotating ring (29) is provided at the top of the first inner ring bracket (28). A linkage sleeve rotating plate (30) is installed vertically below the sleeve rotating plate (27). A second inner ring bracket (31) is welded at the bottom of the linkage sleeve rotating plate (30). The second inner ring bracket (31) is ) is provided below the outer wall of the first semicircular rotating ring (29), and limiting semicircular rings (33) for limiting the second semicircular rotating ring (32) in the front and rear directions are provided on both sides of the second semicircular rotating ring (32), and a supporting semicircular ring (34) is welded to the bottom end of the outer wall of the limiting semicircular ring (33), and a concave support plate (35) having a concave vertical cross-section is installed at the bottom end of the supporting semicircular ring (34), and a plurality of sleeve balls (36) are provided in a semicircular gap formed between the second semicircular rotating ring (32) and the supporting semicircular ring (34).

10. A welding method using the automatic welding equipment for the slewing support on a tower crane according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: When welding the upper surface of the upper slewing support of the tower crane, the fixed collar bracket (4) can be pushed upward by the hydraulic pump station, and the fixed collar bracket (4) drives the upper flip support plate (2) to move upward, so that the upper flip support plate (2) can be moved upward, so that a gap is formed between the upper surface of the upper slewing support of the tower crane and the upper flip support plate (2), and the edge of the upper surface of the upper slewing support of the tower crane can be welded. The welding robot arm (1) is controlled by the external control button (15), so that the PLC control cabinet (14) is automatically operated to realize that the welding robot arm (1) completes the welding of the edge of the upper surface of the upper slewing support of the tower crane; Step 2: When locking and fixing, the hydraulic cylinder (37) can be started to drive the fixed collar bracket (4) to move downward, and the fixed collar bracket (4) drives the upper flip support plate (2) to move downward. When the bottom end of the fixed collar bracket (4) completely contacts the upper surface of the hydraulic cylinder (37), the first servo drive motor (17) is started to drive the first bidirectional transmission screw (16) to rotate forward, and the second servo drive motor (19) drives the second bidirectional transmission screw (18) to rotate forward, and the first threaded collar support plate (20) and the second threaded collar support plate (21) on the lower flip support plate (3) move relative to each other. The first threaded collar support plate (20) and the second threaded collar support plate (21) on the upper flip support plate (2) also move relative to each other, and the second threaded collar support plate (21) drives the two side brackets (22) to move, so that the two second threaded collar support plates (21) are pressed on the left and right sides of the slewing support on the tower crane, and then the two pushing cylinders (23) are started to drive the pushing support plates (24) to push, and the two pushing support plates (24) can be pressed on the front and rear positions of the slewing support on the tower crane respectively, so that the slewing support on the tower crane can be fully double-fitted, squeezed and locked; Step 3: When flipping, the drive plate (6) can be started to rotate 180 degrees, and the drive plate (6) drives the hydraulic cylinder (37) to realize the rotation operation. The hydraulic cylinder (37) drives the rotating shaft (8) to rotate the two linked rotating blocks (5), and the linked rotating blocks (5) drive the lower flip support plate (3) to rotate. The hydraulic cylinder (37) drives the fixed collar bracket (4) to rotate the upper flip support plate (2), so that the upper slewing support of the tower crane located between the upper flip support plate (2) and the lower flip support plate (3) can be rotated 180 degrees. In this way, the upper flip support plate (2) and the lower flip support plate (3) can be firmly fitted to the upper slewing support of the tower crane to flip, so that the flipping stability is better. When the lower flip support plate (3) is located at the upper position of the upper flip support plate (2), the first servo drive motor (17) is started to drive the first bidirectional transmission screw (16) to reverse, and at the same time, the lower flip support plate (3 ) are contracted, and the first threaded collar support plate (20) and the second threaded collar support plate (21) are moved in opposite directions, so that the second threaded collar support plate (21) and the first threaded collar support plate (20) on the lower flip support plate (3) no longer play a locking operation on the upper slewing support of the tower crane, while the second servo drive motor (19) on the upper flip support plate (2) remains stationary, the reduction motor (9) is started to drive the rotating shaft (8) to rotate, the rotating shaft (8) drives the plurality of limit support blocks (10) to rotate, the fixed collar support (4) drives the linkage rotating block (5) to rotate upward, and the linkage rotating block (5) drives the lower flip support plate (3) to flip upward, so that the angle formed by the upper flip support plate (2) and the lower flip support plate (3) is ninety degrees, and the internal and edge parts of the flip surface of the upper slewing support of the tower crane can be automatically welded by the welding robot arm (1); Step 4: When the stable limited position is turned over, the concave support plate (35) plays a role of vertical support for the supporting semicircular ring (34), and the supporting semicircular ring (34) plays a supporting role for the two limited semicircular rings (33). When the upper turning support plate (2) drives the sleeve rotating plate (27) to rotate, the sleeve rotating plate (27) drives the first inner ring bracket (28) to rotate the first semicircular rotating ring (29), and the lower turning support plate (3) drives the linkage sleeve rotating plate (30) to rotate the second inner ring bracket (31), and the second inner ring bracket (31) drives the second semicircular rotating ring (32) to rotate. After rotating one hundred and eighty degrees, the second semicircular rotating ring (32) can rotate at a position between the two limiting semicircular rings (33), and the second semicircular rotating ring (32) contacts a plurality of sleeve balls (36) to achieve rotation, and the plurality of sleeve balls (36) can roll on the supporting semicircular ring (34), and the first semicircular rotating ring (29) can enter a position between the two limiting semicircular rings (33), so that during the flipping process, the gravity on the first semicircular rotating ring (29) and the second semicircular rotating ring (32) can be completely directed to the supporting semicircular ring (34).

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