Large-size bolt welding machining device and method

Abstract

The invention relates to the technical field of bolt machining, and discloses a large-size bolt welding machining device and method.The welding machining device comprises a steel plate, a bolt and a spot welding machine, the spot welding machine comprises a welding head, and a welding table used for containing the steel plate is rotationally arranged on the side portion of the spot welding machine; a first rack and a first gear which are meshed with each other are arranged on the outer wall of the spot welding machine, a first bevel gear is arranged on the outer side of the first gear, a second bevel gear meshed with the first bevel gear is arranged on the outer side of the spot welding machine, and a second gear meshed with the second bevel gear is arranged on the outer side of the spot welding machine. The welding table is sleeved with a gear ring meshed with the second gear, and a driving assembly is arranged between the welding head and the first rack. The spot welding machine welds one bolt on the steel plate through the welding head, the welding head moves upwards and resets to drive the welding table to rotate, the welding table drives the steel plate to rotate, the other bolt is rotated to the position below the welding head, the other bolt is welded conveniently, and therefore the welding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bolt processing, and in particular to a large-size bolt welding processing device and a method thereof. Background Art

[0002] The welding process of large-size bolts is a complex process, which mainly involves the construction field. The welding between large-size bolts and steel plates is one of the common connection methods in engineering construction.

[0003] Spot welding machines are mostly used on the market to weld large-size bolts to steel plates. Spot welding machines use the principle of double-sided double-point overcurrent welding. When working, two electrodes pressurize the workpiece so that the two layers of metal form a certain contact resistance under the pressure of the two electrodes. When the welding current flows from one electrode through the other electrode, an instantaneous heat weld is formed at the two contact resistance points, and the welding current instantly flows from the other electrode along the two workpieces to this electrode to form a loop without damaging the internal structure of the workpiece being welded. Before welding, it is generally necessary to drill a hole in the steel plate and insert the bolt into the hole.

[0004] At present, spot welding machines are usually used to weld large-size bolts and steel plates. The steel plates with bolts are placed on a welding table, and the welding is completed by the automatic lifting welding head. However, when welding different bolts on the steel plate, workers are required to manually pick up the steel plate to adjust the angle and align the bolts to be welded under the welding head, which not only reduces the safety of welding, but also is time-consuming and labor-intensive, thus easily affecting the welding efficiency. Therefore, it does not meet the existing needs. In this regard, we propose a large-size bolt welding processing device and method. Summary of the invention

[0005] The present invention provides a large-size bolt welding processing device and method, which has the beneficial effect of improving welding efficiency, and solves the problem mentioned in the above background technology that large-size bolts and steel plates are usually welded using a spot welding machine, the steel plate with the bolts inserted is placed on a welding table, and the welding is completed by an automatically lifting welding head. However, when welding different bolts on the steel plate, workers are required to manually pick up the steel plate to adjust the angle and align the bolts to be welded under the welding head, which not only reduces the safety of welding, but also is time-consuming and labor-intensive, thereby easily affecting the welding efficiency.

[0006] The present invention provides the following technical solution: a large-size bolt welding processing device, comprising a steel plate, a bolt inserted into the side of the steel plate, and a spot welding machine, the spot welding machine also comprising a welding head, a welding table is rotatably arranged on the side of the spot welding machine, a first rack is slidably arranged on the outer wall of the spot welding machine, a first gear meshing with the first rack is arranged outside the spot welding machine, a first bevel gear is connected to the middle of the first gear, a second bevel gear meshing with the first bevel gear is arranged outside the spot welding machine, a second gear meshing with the second bevel gear is also rotatably arranged outside the spot welding machine, a gear ring meshing with the second gear is sleeved on the outer side of the welding table, and a driving assembly is arranged between the welding head and the first rack.

[0007] As an optional solution for a large-size bolt welding processing device described in the present invention, the lower end of the welding table is rotatably inserted on the upper side of the spot welding machine, and balls are rollingly inserted at the bottom of the welding table. The number of balls is set to several, and the balls are all in rolling contact with the inner wall of the spot welding machine.

[0008] As an optional solution of a large-size bolt welding processing device described in the present invention, the number of bolts is set to two, and the two bolts are symmetrically inserted into the side of the steel plate, a groove is opened on the upper side of the welding table, and the number of the grooves is also set to two, the two grooves are used in conjunction with two bolts respectively, the steel plate is placed on the upper side of the welding table, and the bolts are respectively inserted into the grooves, and the center of one of the grooves is on the same vertical line as the center of the welding head.

[0009] As an optional solution of a large-size bolt welding processing device described in the present invention, wherein: the outer wall of the spot welding machine is also rotatably provided with a rotating shaft, the side wall of the spot welding machine is installed with a damping bearing, the rotating shaft is inserted in the damping bearing, the outer ring of the damping bearing is in contact with the inner wall of the spot welding machine, the inner ring of the damping bearing is in contact with the rotating shaft, a one-way bearing is sleeved in the middle of the rotating shaft, a first gear is installed outside the one-way bearing, and the first bevel gear is installed at the end of the rotating shaft;

[0010] When the first rack moves downward: the inner ring and the outer ring of the one-way bearing rotate relative to each other, so that the first gear rotates, while the rotating shaft remains stationary;

[0011] When the first rack moves upward, the inner ring and the outer ring of the one-way bearing rotate synchronously, so that the first gear drives the rotating shaft to rotate together.

[0012] As an optional solution of a large-size bolt welding processing device described in the present invention, a connecting rod is installed on the outside of the welding head, a driving assembly is arranged between the connecting rod and the first rack, and the driving assembly includes a slide plate slidably arranged on the side wall of the spot welding machine, a third gear and a fourth gear respectively rotatably arranged on the outside of the slide plate, and a second rack installed on the side wall of the electric welding machine.

[0013] As an optional solution of a large-size bolt welding processing device described in the present invention, the slide plate is connected to the connecting rod, the third gear and the fourth gear are longitudinally and vertically arranged on the same side of the slide plate, the first rack and the second rack are respectively arranged on both sides of the third gear and the fourth gear, one side of the third gear and the fourth gear are jointly meshed with the first rack, and the other side of the third gear and the fourth gear are jointly meshed with the second rack.

[0014] As an optional solution of a large-size bolt welding processing device described in the present invention, a circular ring is rotatably arranged on the inner side of the welding table, a clamp is rotatably arranged on the inner side of the welding table, the number of the clamps is set to be several, several of the clamps are evenly arranged circumferentially inside the circular ring, and the clamps surround the outside of the bolt, the inner ring of the circular ring is provided with a first tooth groove, and a tooth segment is arranged on the outer side of the clamp, and the tooth segment is meshed with the first tooth groove.

[0015] As an optional solution for a large-size bolt welding processing device described in the present invention, the outer ring of the circular ring is provided with a second tooth groove, a fifth gear is rotatably installed on the inner side of the welding table, the fifth gear is meshed with the second tooth groove, and a third rack meshed with the fifth gear is also slidably arranged on the inner side of the welding table.

[0016] As an optional solution for a large-size bolt welding processing device described in the present invention, a first wedge block and a second wedge block are slidably arranged on the inner side of the welding table, the first wedge block and the second wedge block are used in combination, the second wedge block is connected to the third rack, a straight rod is installed on the upper side of the first wedge block, the straight rod is slidably inserted on the upper side of the welding table, a spring is sleeved on the outer side of the straight rod, the two ends of the spring are respectively connected to the first wedge block and the inner wall of the welding table, a push rod is installed on the outer side of the welding head, and the push rod intermittently conflicts with the straight rod.

[0017] The present invention also provides a large-size bolt welding method, comprising the following specific steps:

[0018] S1. Clamping of bolts: When the welding head descends, the clamping piece rotates to clamp and fix the middle of the bolt to avoid shaking during welding;

[0019] S2. Welding of bolts: The lowered welding head contacts the steel plate and the bolt, and the spot welding machine welds the bolt to the steel plate through the welding head to complete the welding of a bolt;

[0020] S3. Welding of another bolt: the welding head moves up and resets, driving the welding table to rotate, so that the welding table drives the steel plate to rotate, and the other bolt is rotated to the bottom of the welding head, so as to facilitate welding of the other bolt, thereby improving the welding efficiency of the bolt and the steel plate.

[0021] The present invention has the following beneficial effects:

[0022] 1. The large-size bolt welding processing device and method thereof, the welding head descends to contact the steel plate and the bolt, so that the spot welding machine welds the bolt on the steel plate through the welding head, and at the same time, the descending welding head drives the first rack to descend through the driving assembly, and the first rack is meshed with the first gear to drive the first gear to rotate, and the one-way bearing is set to keep the rotating shaft stationary;

[0023] After completing one welding, the welding head rises and resets. During this process, the rising welding head drives the first rack to move upward through the driving assembly. Through the meshing of the first rack and the first gear, and the limiting effect of the one-way bearing, the first gear drives the first bevel gear to rotate through the rotating shaft, and then through the meshing of the first bevel gear and the second bevel gear, the meshing of the second bevel gear and the second gear, and the meshing of the second gear and the gear ring, the welding table is driven to rotate, so that the welding table drives the steel plate and bolts thereon to rotate, so that the bolts that have not been welded are transferred to the bottom of the welding head, which is convenient for welding them, thereby improving the welding efficiency.

[0024] 2. The large-size bolt welding processing device and method thereof, the welding head drives the slide plate to move downward through the connecting rod, so that the third gear and the fourth gear drive the first rack to move downward, so that the first rack can be controlled to move up and down by the lifting and lowering of the welding head, thereby moving the bolt to the bottom of the welding head, so as to facilitate welding of the bolt;

[0025] Moreover, through the meshing of the third gear and the fourth gear with the second rack, the third gear and the fourth gear rotate while descending, and then through the meshing of the third gear and the fourth gear with the first rack, the first rack, which is moving downward, is driven to move downward again, so that the downward movement distance of the first rack is greater than the downward movement distance of the welding head, so that when the distance between the welding head and the welding table is small, the lifting distance of the first rack can be made large enough, so that the welding table can drive the steel plate and the bolt to rotate at a large enough angle, so that the bolt rotates to the bottom of the welding head, which is convenient for welding the bolt, thereby shortening the lifting height of the welding head as much as possible, thereby further improving the welding efficiency.

[0026] 3. The large-size bolt welding processing device and method thereof, the descending welding head drives the push rod to press the straight rod downward, so that the first wedge block slides down and the spring is compressed, and the first wedge block and the second wedge block are used in coordination, so that the second wedge block drives the third rack to move, and the meshing of the third rack with the fifth gear, and the meshing of the fifth gear with the second tooth groove, drives the ring to rotate, and then the meshing of the first tooth groove with the tooth segment drives the clamp to rotate, so that the ends of the clamp are in contact with the outside of the bolt, thereby clamping and positioning the bolt, so that when the welding head welds the bolt, the bolt is not easily touched and shaken, thereby improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the cutaway structure of the present invention.

[0029] Figure 3 It is a schematic diagram of the partial cutaway structure of the present invention.

[0030] Figure 4 It is a schematic diagram of the local three-dimensional structure of the present invention.

[0031] Figure 5 It is a schematic diagram of the structure of the clip in the first state of the present invention.

[0032] Figure 6 It is a schematic diagram of the structure of the clip in the second state of the present invention.

[0033] Figure 7 For the present invention Figure 1 Enlarged structural diagram at A in the middle.

[0034] Figure 8 It is a schematic diagram of the bottom structure of the welding platform of the present invention.

[0035] In the figure: 10, steel plate; 100, spot welding machine; 110, welding head; 120, welding table; 121, ball bearing; 122, groove; 123, first rack; 130, rotating shaft; 131, damping bearing; 132, one-way bearing; 133, first gear; 134, first bevel gear; 135, second bevel gear; 140, second gear; 141, gear ring; 142, connecting rod; 150 , drive assembly; 151, slide plate; 152, third gear; 153, fourth gear; 154, second rack; 160, ring; 161, clip; 162, first tooth groove; 163, tooth segment; 164, second tooth groove; 165, fifth gear; 166, third rack; 170, first wedge block; 171, second wedge block; 172, straight rod; 173, spring; 174, push rod. DETAILED DESCRIPTION

[0036] 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.

[0037] Embodiment 1: This embodiment is intended to promote the solution of the problem that a spot welding machine is usually used to weld large-sized bolts and steel plates. The steel plate with bolts inserted is placed on a welding table, and the welding is completed by the automatic lifting welding head. However, when welding different bolts on the steel plate, workers need to manually pick up the steel plate to adjust the angle and align the bolts to be welded under the welding head, which not only reduces the safety of welding, but also wastes time and effort, thus easily affecting the welding efficiency. Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 8 A large-size bolt welding processing device includes a steel plate 10, a bolt inserted into the side of the steel plate 10, and a spot welding machine 100. The spot welding machine 100 also includes a welding head 110, and the welding head 110 can be automatically raised and lowered.

[0038] A welding table 120 is rotatably arranged on the upper side of the spot welding machine 100. A groove body is opened on the upper side of the spot welding machine 100. The lower end of the welding table 120 is rotatably inserted in the groove body of the spot welding machine 100. Balls 121 are rollingly inserted at the bottom of the welding table 120. The number of balls 121 is set to be several, and the balls 121 are all in rolling contact with the inner wall of the spot welding machine 100, thereby reducing the friction between the welding table 120 and the spot welding machine 100. The steel plate 10 is arranged on the upper side of the welding table 120.

[0039] The number of bolts is set to two, and the two bolts are symmetrically inserted into the side of the steel plate 10. A groove 122 is opened on the upper side of the welding table 120, and the number of the grooves 122 is also set to two. The two grooves 122 are used in conjunction with two bolts respectively. The steel plate 10 is placed on the upper side of the welding table 120, and the lower ends of the bolts are respectively inserted into the grooves 122, wherein the center of one of the grooves 122 is on the same vertical line as the center of the welding head 110.

[0040] A first rack 123 is slidably arranged on the outer wall of the spot welding machine 100, and a rotating shaft 130 is also rotatably arranged on the outer wall of the spot welding machine 100. A damping bearing 131 is fixedly installed on the side wall of the spot welding machine 100, and the rotating shaft 130 is inserted in the damping bearing 131. The outer ring of the damping bearing 131 is fixedly fitted with the inner wall of the spot welding machine 100, and the inner ring of the damping bearing 131 is fixedly fitted with the rotating shaft 130. A one-way bearing 132 is fixedly sleeved in the middle of the rotating shaft 130, and a ratchet structure is arranged inside the one-way bearing 132, so that the inner ring and outer ring of the one-way bearing 132 can only rotate relative to each other in one direction. The one-way bearing 132 is a technical means well known to technicians in this field and will not be described in detail here.

[0041] A first gear 133 is fixedly installed on the outside of the one-way bearing 132, and the first gear 133 is meshed with the first rack 123. When the first rack 123 moves downward, the inner ring and the outer ring of the one-way bearing 132 rotate relatively, so that the first gear 133 rotates, while the rotating shaft 130 remains stationary. When the first rack 123 moves upward, the inner ring and the outer ring of the one-way bearing 132 rotate synchronously, so that the first gear 133 drives the rotating shaft 130 to rotate together.

[0042] A first bevel gear 134 is fixedly installed at the end of the rotating shaft 130, a second bevel gear 135 is rotatably arranged on the outer side of the spot welding machine 100, the second bevel gear 135 is meshed with the first bevel gear 134, a second gear 140 meshed with the second bevel gear 135 is also rotatably arranged on the outer side of the spot welding machine 100, a gear ring 141 is fixedly sleeved on the outer side of the welding table 120, the gear ring 141 is meshed with the second gear 140, a connecting rod 142 is fixedly installed on the outer side of the welding head 110, a driving assembly 150 is arranged between the connecting rod 142 and the first rack 123, and the driving assembly 150 drives the first rack 123 to move up and down.

[0043] This embodiment also includes a large-size bolt welding method, including the following specific steps:

[0044] S1. Clamping of the bolt: When the welding head 110 descends, the clamp 161 rotates to clamp and fix the middle of the bolt to avoid shaking during welding;

[0045] S2. Welding of bolts: The descending welding head 110 contacts the steel plate 10 and the bolt, and the spot welding machine 100 welds the bolt to the steel plate 10 through the welding head 110, completing the welding of a bolt;

[0046] S3. Welding of another bolt: The welding head 110 is moved up and reset, driving the welding table 120 to rotate, so that the welding table 120 drives the steel plate 10 to rotate, and another bolt is rotated to the bottom of the welding head 110, so as to facilitate welding of another bolt, thereby improving the welding efficiency of the bolt and the steel plate 10.

[0047] In this embodiment: the welding head 110 descends to contact the steel plate 10 and the bolt, so that the spot welding machine 100 welds the bolt on the steel plate 10 through the welding head 110. At the same time, the descending welding head 110 drives the first rack 123 to descend through the driving assembly 150, and the first rack 123 is meshed with the first gear 133 to drive the first gear 133 to rotate, and the one-way bearing 132 is set to keep the rotating shaft 130 stationary;

[0048] After completing one welding, the welding head 110 rises and resets. During this process, the rising welding head 110 drives the first rack 123 to move upward through the driving assembly 150. Through the meshing of the first rack 123 and the first gear 133, and the limiting effect of the one-way bearing 132, the first gear 133 drives the first bevel gear 134 to rotate through the rotating shaft 130, and then through the meshing of the first bevel gear 134 and the second bevel gear 135, the meshing of the second bevel gear 135 and the second gear 140, and the meshing of the second gear 140 and the gear ring 141, the welding table 120 is driven to rotate, so that the welding The connecting platform 120 drives the steel plate 10 and the bolts thereon to rotate, so that the unwelded bolts are transferred to the bottom of the welding head 110, which is convenient for welding them, thereby improving the welding efficiency and solving the problem of usually using spot welding machines to weld large-sized bolts and steel plates. The steel plate with bolts inserted is placed on the welding platform, and the welding is completed by the automatic lifting welding head. However, when welding different bolts on the steel plate, workers are required to manually pick up the steel plate to adjust the angle and align the bolts to be welded under the welding head, which not only reduces the safety of welding, but also is time-consuming and labor-intensive, thus easily affecting the welding efficiency.

[0049] Embodiment 2: This embodiment is intended to solve the problem that it is inconvenient to control the up and down movement of the first rack 123 by lifting the welding head 110, and it is inconvenient to move the bolt to the bottom of the welding head 110, so that it is inconvenient to weld the bolt. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 and Figure 7 The driving assembly 150 includes a slide plate 151 slidably arranged on the side wall of the spot welding machine 100, a third gear 152 and a fourth gear 153 rotatably arranged on the outer side of the slide plate 151, and a second rack 154 fixedly installed on the side wall of the electric welding machine. The slide plate 151 is fixedly connected to the connecting rod 142, the third gear 152 and the fourth gear 153 are vertically arranged on the same side of the slide plate 151, the first rack 123 and the second rack 154 are respectively arranged on both sides of the third gear 152 and the fourth gear 153, one side of the third gear 152 and the fourth gear 153 are meshed with the first rack 123, and the other side of the third gear 152 and the fourth gear 153 are meshed with the second rack 154.

[0050] In this embodiment: the welding head 110 drives the slide plate 151 to move downward through the connecting rod 142, so that the third gear 152 and the fourth gear 153 drive the first rack 123 to move downward, so that the first rack 123 can be controlled to move up and down by lifting and lowering the welding head 110, thereby moving the bolt to the bottom of the welding head 110, so as to facilitate welding of the bolt;

[0051] Moreover, through the meshing of the third gear 152 and the fourth gear 153 with the second rack 154, the third gear 152 and the fourth gear 153 descend and rotate at the same time, and then through the meshing of the third gear 152 and the fourth gear 153 with the first rack 123, the first rack 123 in the process of moving downward is driven to move downward again, so that the downward moving distance of the first rack 123 is greater than the downward moving distance of the welding head 110, so that when the distance between the welding head 110 and the welding table 120 is small, the lifting and lowering distance of the first rack 123 can be made large enough, so that the welding table 120 drives the steel plate 10 and the bolt to rotate at a large enough angle, so that the bolt rotates to the bottom of the welding head 110, which is convenient for welding the bolt, thereby shortening the lifting and lowering height of the welding head 110 as much as possible, thereby further improving the welding efficiency.

[0052] Embodiment 3: This embodiment is intended to solve the problem that when the welding head 110 is welding the bolt, the bolt is easily touched and shaken, causing the bolt to deviate, thereby easily affecting the welding effect. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 A circular ring 160 is rotatably provided on the inner side of the welding table 120, and a clip 161 is also rotatably provided on the inner side of the welding table 120. The number of clips 161 is set to be several, and the several clips 161 are evenly arranged in the inner side of the circular ring 160 in an annular direction, and the clips 161 surround the outside of the bolt, and there is a gap between the ends of the clips 161 and the bolt, and the inner ring of the circular ring 160 is provided with a first tooth groove 162, and a tooth segment 163 is fixedly provided on the outer side of the clip 161, and the tooth segment 163 is meshed with the first tooth groove 162.

[0053] The outer ring of the circular ring 160 is provided with a second tooth groove 164 , a fifth gear 165 is rotatably mounted inside the welding platform 120 , the fifth gear 165 meshes with the second tooth groove 164 , and a third rack 166 meshing with the fifth gear 165 is slidably arranged inside the welding platform 120 .

[0054] A first wedge block 170 and a second wedge block 171 are slidably arranged on the inner side of the welding table 120, respectively. The first wedge block 170 and the second wedge block 171 are used in conjunction with each other, and a limit block is installed on the inclined surface of the first wedge block 170, and a limit groove used in conjunction with the limit block is opened on the inclined surface of the second wedge block 171. The limit block is slidably inserted in the limit groove, so that the inclined surfaces of the first wedge block 170 and the second wedge block 171 always maintain sliding contact, and the second wedge block 171 is fixedly connected to the third rack 166. A straight rod 172 is fixedly installed on the upper side of the first wedge block 170, and the straight rod 172 is slidably inserted on the upper side of the welding table 120. A spring 173 is sleeved on the outer side of the straight rod 172, and the two ends of the spring 173 are respectively fixedly connected to the first wedge block 170 and the inner wall of the welding table 120, and a push rod 174 is fixedly installed on the outer side of the welding head 110, and the push rod 174 intermittently conflicts with the straight rod 172.

[0055] In this embodiment: the descending welding head 110 drives the push rod 174 to press the straight rod 172 downward, so that the first wedge block 170 slides down, and the spring 173 is compressed. Through the cooperation of the first wedge block 170 and the second wedge block 171, the second wedge block 171 drives the third rack 166 to move, and the engagement of the third rack 166 with the fifth gear 165 and the engagement of the fifth gear 165 with the second tooth groove 164 drives the ring 160 to rotate, and then the engagement of the first tooth groove 162 with the tooth segment 163 drives the clip 161 to rotate, so that the ends of the clip 161 are all against the outside of the bolt, so as to clamp and position the bolt, so that when the welding head 110 welds the bolt, the bolt is not easily touched and shaken, thereby improving the welding effect;

[0056] When the welding head 110 moves upward and resets, the push rod 174 moves away from the straight rod 172, releasing the resistance to the straight rod 172, and the straight rod 172 slides upward through the rebound force of the spring 173, thereby resetting the clamping piece 161 and releasing the clamping of the bolt.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A large-size bolt welding processing device, comprising a steel plate (10), a bolt inserted into the side of the steel plate (10), and a spot welding machine (100), wherein the spot welding machine (100) further comprises a welding head (110), characterized in that: A welding table (120) is rotatably arranged on the side of the spot welding machine (100); a first rack (123) is slidably arranged on the outer wall of the spot welding machine (100); a first gear (133) meshing with the first rack (123) is arranged outside the spot welding machine (100); a first bevel gear (134) is connected to the middle of the first gear (133); a second bevel gear (135) meshing with the first bevel gear (134) is arranged outside the spot welding machine (100); a second gear (140) meshing with the second bevel gear (135) is also rotatably arranged outside the spot welding machine (100); a gear ring (141) meshing with the second gear (140) is sleeved on the outer side of the welding table (120); and a driving assembly (150) is arranged between the welding head (110) and the first rack (123).

2. A large-size bolt welding processing device according to claim 1, characterized in that: The lower end of the welding table (120) is rotatably inserted on the upper side of the spot welding machine (100), and a ball (121) is rollingly inserted at the bottom of the welding table (120). The number of the ball (121) is set to be a plurality, and the ball (121) is in rolling contact with the inner wall of the spot welding machine (100).

3. The large-size bolt welding processing device according to claim 1 is characterized in that: The number of bolts is set to two, and the two bolts are symmetrically inserted into the side of the steel plate (10). A groove (122) is opened on the upper side of the welding platform (120), and the number of the grooves (122) is also set to two. The two grooves (122) are used in conjunction with two bolts respectively. The steel plate (10) is placed on the upper side of the welding platform (120), and the bolts are respectively inserted into the grooves (122), and the center of one of the grooves (122) is on the same vertical line as the center of the welding head (110).

4. The large-size bolt welding processing device according to claim 1 is characterized in that: The outer wall of the spot welding machine (100) is also rotatably provided with a rotating shaft (130), the side wall of the spot welding machine (100) is installed with a damping bearing (131), the rotating shaft (130) is inserted into the damping bearing (131), the outer ring of the damping bearing (131) is in contact with the inner wall of the spot welding machine (100), the inner ring of the damping bearing (131) is in contact with the rotating shaft (130), a one-way bearing (132) is sleeved in the middle of the rotating shaft (130), a first gear (133) is installed outside the one-way bearing (132), and the first bevel gear (134) is installed at the end of the rotating shaft (130); When the first rack (123) moves downward, the inner ring and the outer ring of the one-way bearing (132) rotate relative to each other, so that the first gear (133) rotates, while the rotating shaft (130) remains stationary; When the first rack (123) moves upward, the inner ring and the outer ring of the one-way bearing (132) rotate synchronously, so that the first gear (133) drives the rotating shaft (130) to rotate together.

5. The large-size bolt welding processing device according to claim 1 is characterized in that: A connecting rod (142) is installed on the outside of the welding head (110), and a driving assembly (150) is arranged between the connecting rod (142) and the first rack (123). The driving assembly (150) includes a slide plate (151) slidably arranged on the side wall of the spot welding machine (100), a third gear (152) and a fourth gear (153) rotatably arranged on the outside of the slide plate (151), and a second rack (154) installed on the side wall of the electric welding machine.

6. A large-size bolt welding processing device according to claim 5, characterized in that: The slide plate (151) is connected to the connecting rod (142); the third gear (152) and the fourth gear (153) are longitudinally and vertically arranged on the same side of the slide plate (151); the first rack (123) and the second rack (154) are respectively arranged on both sides of the third gear (152) and the fourth gear (153); one side of the third gear (152) and the fourth gear (153) are jointly meshed with the first rack (123); the other side of the third gear (152) and the fourth gear (153) are jointly meshed with the second rack (154).

7. The large-size bolt welding processing device according to claim 1 is characterized in that: A circular ring (160) is rotatably arranged on the inner side of the welding table (120), and a clip (161) is rotatably arranged on the inner side of the welding table (120). The number of the clips (161) is set to be a plurality, and the plurality of clips (161) are evenly arranged in an annular direction inside the circular ring (160), and the clips (161) surround the outside of the bolt. The inner ring of the circular ring (160) is provided with a first tooth groove (162), and a tooth segment (163) is arranged on the outer side of the clip (161), and the tooth segment (163) is meshed with the first tooth groove (162).

8. The large-size bolt welding processing device according to claim 7 is characterized in that: The outer ring of the circular ring (160) is provided with a second tooth groove (164); a fifth gear (165) is rotatably mounted on the inner side of the welding platform (120); the fifth gear (165) is meshed with the second tooth groove (164); and a third rack (166) is slidably arranged on the inner side of the welding platform (120) and is meshed with the fifth gear (165).

9. A large-size bolt welding processing device according to claim 8, characterized in that: A first wedge block (170) and a second wedge block (171) are slidably arranged on the inner side of the welding platform (120); the first wedge block (170) and the second wedge block (171) are used in combination; the second wedge block (171) is connected to the third rack (166); a straight rod (172) is installed on the upper side of the first wedge block (170); the straight rod (172) is slidably inserted on the upper side of the welding platform (120); a spring (173) is sleeved on the outer side of the straight rod (172); two ends of the spring (173) are respectively connected to the first wedge block (170) and the inner wall of the welding platform (120); a push rod (174) is installed on the outer side of the welding head (110); the push rod (174) intermittently contacts the straight rod (172).

10. A large-size bolt welding method, according to a large-size bolt welding device according to any one of claims 1 to 9, characterized in that: The specific steps include: S1. Clamping of the bolt: When the welding head (110) is lowered, the clamp (161) is rotated to clamp and fix the middle of the bolt to prevent shaking during welding; S2. Welding of bolts: The descending welding head (110) contacts the steel plate (10) and the bolts, and the spot welding machine (100) welds the bolts to the steel plate (10) through the welding head (110), thereby completing the welding of one bolt; S3. Welding of another bolt: the welding head (110) is moved upward and reset, driving the welding table (120) to rotate, so that the welding table (120) drives the steel plate (10) to rotate, and the other bolt is rotated to the bottom of the welding head (110), so as to facilitate welding of the other bolt, thereby improving the welding efficiency of the bolt and the steel plate (10).

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