A welding device for processing expansion joints of roads and bridges

Abstract

The present invention discloses a welding device for processing expansion joints of road bridges, including a processing seat, a steel body is arranged on the processing seat through a conveying device, a welding mechanism matching a welding plate is symmetrically arranged on the processing seat, horizontal plates are fixedly arranged on both sides of the processing seat, an adjustment mechanism is arranged on the horizontal plate through a driving mechanism, a first welding head is symmetrically arranged on the adjustment mechanism, a moving mechanism is arranged on the processing seat, a moving plate is arranged on the moving mechanism, and a clamping mechanism is symmetrically arranged under the moving plate. The present invention can conveniently move and adjust the first welding head when welding anchor bars, and thus can conveniently perform full welding operations on the welding points, and can not only weld the upper part, but also weld the lower part, to ensure the welding effect, and at the same time, when welding the upper part, the first welding head can be tilted downward, and when welding the lower part, it can be tilted upward, so that the welding operation can be better performed, and the welding efficiency and quality can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to welding equipment for processing expansion joints of roads and bridges. Background Art

[0002] Bridge expansion joints are expansion joints that are usually set between two beam ends, between beam ends and abutments, or at the hinged position of the bridge to meet the requirements of bridge deck deformation. The expansion joints are required to be able to freely expand and contract in both directions parallel and perpendicular to the bridge axis and to be firm and reliable. Existing bridge expansion joints are mostly divided into butt-jointed type or steel-supported type. Butt-jointed expansion joints are usually welded by a steel body and anchor bars. During the manufacturing process, workers are required to manually weld the anchor bars to the reserved steel plate at the bottom of the steel body. In order to improve the efficiency of welding, welding equipment for road bridge expansion joint processing is now used to complete the welding process.

[0003] After searching, a Chinese patent announcement number CN117817216B discloses a welding equipment for processing expansion joints of roads and bridges, including a material box, material boxes for filling anchor bars are arranged at both ends of the steel body, a lifting seat is slidably arranged on one side of the material box, a limit block is movably arranged on one side of the material box, and is used to limit the sliding of the reserved steel plate of the steel body, the rotatable welding gun arm can cooperate with the lifting seat and the pushing shell to move synchronously, and the loading ear plate on one side of the pushing shell can be used to drive the reserved steel plate to move. The present invention is provided with a pushing shell that can push material periodically and a material box that can automatically realize the loading and positioning of the anchor bars at the bottom of the steel body, thereby realizing automatic loading, positioning and welding of weldments, and at the same time, the contact state between the reserved steel plate and the anchor bars can be accurately detected before welding.

[0004] However, the existing welding equipment has certain defects in actual use. Since most of the anchor bars are U-shaped as a whole, welding operations are performed on the two ends of the U-shape to the steel body during welding. Therefore, when welding is performed through the equipment, not only the top of the contact needs to be welded, but also the bottom of the contact needs to be welded. The contact point cannot be fully welded, and the angle of the first welding head cannot be adjusted according to the different welding positions, which will affect the quality of welding. Summary of the invention

[0005] The object of the present invention is to provide a welding device for processing expansion joints of roads and bridges to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a welding device for processing expansion joints of road bridges, comprising a processing seat, a steel body is arranged on the processing seat through a conveying device, welding plates matching the anchor bars are equidistantly arranged on both side walls of the steel body, welding mechanisms matching the welding plates are symmetrically arranged on the processing seat, cross plates are fixedly arranged on both sides of the processing seat, an adjustment mechanism is arranged on the cross plate through a driving mechanism, a first welding head is symmetrically arranged on the adjustment mechanism, a moving mechanism is arranged on the processing seat, a moving plate is arranged on the moving mechanism, a clamping mechanism is symmetrically arranged under the moving plate, and the clamping mechanism matches the anchor bars.

[0007] Preferably, in order to facilitate the movement of the adjusting mechanism, and then facilitate the reciprocating movement of the first welding head, so as to facilitate the welding operation, the driving mechanism includes a fixed seat fixedly arranged on the horizontal plate, a driving motor is fixedly arranged in the middle of the fixed seat, a circular plate is fixedly arranged at the output end of the driving motor, and the circular plate is connected to the adjusting mechanism through a connecting assembly.

[0008] Preferably, in order to facilitate the movement with the adjustment mechanism, and then facilitate the reciprocating movement of the first welding head, so as to facilitate the welding operation, the adjustment mechanism includes a vertical plate fixedly set on the processing seat, the vertical plate is provided with a mounting plate through a sliding assembly, and an adjustment plate is provided in the mounting plate through a hub motor, and the adjustment plate is connected to the first welding head through a clamping seat.

[0009] Preferably, in order to ensure stability during the movement and facilitate the subsequent resetting operation, and thus facilitate the next welding use, the sliding assembly includes a sliding guide groove opened in the vertical plate, a sliding guide block is slidingly provided in the sliding guide groove, the sliding guide block is fixedly connected to the mounting plate, and balls are symmetrically provided at the top and bottom ends of the sliding guide block, guide grooves matching the balls are opened in the sliding guide groove, a rectangular block is fixedly provided on the side wall of the vertical plate, a winder is provided inside the rectangular block for rotation by a volute spring, a connecting rope is provided on the winder, the connecting rope passes through the vertical plate and extends to the inside of the sliding guide groove, and is connected to the sliding guide block.

[0010] Preferably, in order to facilitate the movement of the first welding head and facilitate welding operations, the connecting assembly includes a connecting piece arranged at the sliding guide block and the end of the circular plate, and a connecting rod is rotatably arranged between the two connecting pieces.

[0011] Preferably, in order to facilitate the reciprocating movement of the movable plate, the clamping and moving of the anchor bars, and the adjustment and positioning operations, the movable mechanism includes a hydraulic telescopic rod equidistantly arranged on the processing seat, a fixed block is fixed at the output end of the hydraulic telescopic rod, and a conveying assembly is provided between the two fixed blocks on the same side.

[0012] Preferably, in order to facilitate the reciprocating movement of the movable plate, the clamping and moving of the anchor bars, and the adjustment and positioning operations, the conveying assembly includes a linear guide device arranged between two fixed blocks on the same side, and a guide slider is provided on the linear guide device, and the two guide sliders are fixedly connected to the movable plate.

[0013] Preferably, in order to facilitate the clamping and fixing of the anchor bars to ensure stability during movement, and to position and fix them during welding to avoid slippage and ensure the quality of welding, the clamping mechanism includes a rectangular plate symmetrically arranged under the movable plate, a frame plate is provided under the rectangular plate through a fixed rod, clamping rods are rotatably provided at both ends of the frame plate, and a clamping assembly is provided at the bottom end of the clamping rod.

[0014] Preferably, in order to facilitate the movement of the clamping components towards and away from each other and to facilitate clamping operations, the clamping mechanism also includes a first electric push rod arranged in the middle of the bottom end of the rectangular plate, and the output end of the first electric push rod slides through the frame plate and extends to the bottom where a moving block is provided, and both ends of the moving block are connected to the clamping rod through a rotating rod.

[0015] Preferably, in order to facilitate the clamping and fixing of the anchor bar to ensure stability during movement, and to position and fix it during welding to avoid slipping and ensure the quality of welding, the clamping assembly includes a clamping plate fixed at the bottom end of the clamping rod, and rubber pads are provided on the side walls of the two clamping plates close to each other, and anti-slip protrusions are equidistantly provided on the rubber pads.

[0016] Preferably, in order to facilitate the transportation and positioning of the welding plate and facilitate the welding operation with the steel body, the welding mechanism includes an empty slot symmetrically opened on the processing seat, a bottom plate is fixedly provided at the bottom end of the empty slot, a second electric push rod is symmetrically provided on the bottom plate, a lifting block is provided at the output end of the second electric push rod, and second welding heads are symmetrically provided on the two side walls of the lifting block, and a moving device is also provided on one side of the empty slot, and a positioning seat matching the welding plate is provided on the moving device.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] By means of the driving mechanism and the adjusting mechanism, when the anchor bar is welded, the first welding head can be conveniently moved and adjusted, so that the welding position can be fully welded, and not only the upper part can be welded, but also the lower part can be welded to ensure the welding effect. At the same time, when welding the upper part, the first welding head can be tilted downward, and when welding the lower part, it can be tilted upward, so that the welding operation can be better performed, and the welding efficiency and quality can be improved. At the same time, the welding mechanism can be used to weld the welding plate and the steel body, and the two can be welded simultaneously, which shortens the time required for welding and improves the processing efficiency.

[0019] By means of the provided moving mechanism in cooperation with the clamping mechanism, the anchor bar can be conveniently clamped and moved, thereby facilitating automatic loading and unloading, and conveniently moving and positioning, thereby facilitating subsequent welding operations, making it more convenient. At the same time, it can be clamped and positioned during the welding process to ensure stability during the welding process, thereby avoiding sliding or displacement, thereby ensuring the quality of welding, and avoiding displacement that may cause welding tilt, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of a welding device for processing expansion joints of roads and bridges proposed by the present invention;

[0021] Figure 2 This is one of the structural schematic diagrams of the driving mechanism and the adjusting mechanism in a welding device for processing expansion joints of road bridges proposed by the present invention;

[0022] Figure 3 This is a second structural schematic diagram of a driving mechanism and an adjusting mechanism in a welding device for processing expansion joints of road bridges proposed by the present invention;

[0023] Figure 4 This is a structural schematic diagram of a fixing seat and a mounting plate in a welding device for processing expansion joints of a road and bridge proposed by the present invention;

[0024] Figure 5 This is a schematic diagram of the structure on the mounting plate of a welding device for processing expansion joints of roads and bridges proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of a vertical plate in a welding device for processing expansion joints of a road and bridge proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a guide rail slider and a moving plate in a welding device for processing expansion joints of a road bridge proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the structure under the rectangular plate in a welding device for processing expansion joints of roads and bridges proposed by the present invention;

[0028] Fig. 9 This is a schematic structural diagram of a rectangular block and a sliding guide rail in a welding device for processing expansion joints of a road bridge proposed by the present invention;

[0029] Fig.10 This is a structural schematic diagram of a welding mechanism in a welding device for processing expansion joints of roads and bridges proposed by the present invention;

[0030] Fig.11 This is a partial structural schematic diagram of the bottom of a processing seat in a welding device for processing expansion joints of road bridges proposed by the present invention.

[0031] In the figure: 1, processing seat; 2, conveying device; 3, steel body; 4, welding plate; 5, anchoring rib; 6, horizontal plate; 7, hydraulic telescopic rod; 8, fixing block; 9, linear guide device; 10, guide slider; 11, fixing seat; 12, vertical plate; 13, circular plate; 14, first welding head; 15, clamping seat; 16, driving motor; 17, connecting rod; 18, connecting piece; 19, sliding guide block; 20, mounting plate; 21, adjusting plate; 22, hub motor; 23, ball bearing; 24, sliding guide slot; 25, guide slot; 26, clamping rod; 27, rectangular plate; 28, frame plate; 29, fixing rod; 30, first electric push rod; 31, moving block; 32, rotating rod; 33, clamping plate; 34, rubber pad; 35, anti-skid protrusion; 36, moving plate; 37, rectangular block; 38, winder; 39, scroll spring; 40, connecting rope; 41, empty slot; 42, moving device; 43, positioning seat; 44, lifting block; 45, second welding head; 46, bottom plate; 47, second electric push rod. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1-Figure 11The present invention provides an embodiment: a welding device for processing expansion joints of road bridges, comprising a processing seat 1 for welding a steel body 3 and an anchor bar 5 in the expansion joint of the bridge, the four corners of the bottom end of which are welded with support legs to ensure the overall stability, a conveying device 2 (which can be a conveyor belt or other conveying equipment, which is a relatively mature technology and will not be described here) is arranged in the middle, which can facilitate the conveying of the steel body 3 to be processed, and then facilitate the welding processing thereof, and welding plates 4 for convenient welding with the anchor bar 5 are equidistantly installed on the two side walls of the steel body 3, which can be welded by The welding mechanism is used for welding and fixing. The welding mechanism includes an empty slot 41 symmetrically opened on the processing seat 1. A bottom plate 46 is fixedly provided at the bottom end of the empty slot 41. A second electric push rod 47 is symmetrically provided on the bottom plate 46. A lifting block 44 is provided at the output end of the second electric push rod 47. A second welding head 45 (which has the same structure as the first welding head 14 and is a relatively mature technology, which will not be described in detail here) is symmetrically provided on the two side walls of the lifting block 44. A moving device 42 is also provided on one side of the empty slot 41. A positioning seat 43 matching the welding plate 4 is provided on the moving device 42. A linear guide rail can be used to cooperate with a moving guide block, or other methods can be used to implement The positioning seat 43 is now movable, and the loading and unloading of the welding plate 4 can be achieved by means of clamps, etc., and placed in the positioning seat 43, which can be positioned, and then moved to contact and position with the steel body 3, thereby facilitating the welding operation. When the welding plate 4 is welded, its front end can be welded to the welded welding plate 4 and the anchor rib 5, and the two have the same time, so that synchronous operation can be performed. A cross plate 6 is welded on one side of the processing seat 1, and an adjustment mechanism is arranged on it through a driving mechanism, which can be moved and adjusted with the first welding head 14, thereby facilitating the anchor rib 5 is welded with the welding plate 4. As for the first welding head 14, only a part of it is shown in the figure. It is connected with the welding device (electric welding or gas welding can be used, and the more mature technology is not described here). The corresponding processing seat 1 is provided with a clamping mechanism through a moving mechanism, which can facilitate the clamping and transportation of the anchoring bar 5, and ensure that no displacement occurs during the welding process, thereby ensuring the welding effect. For the processing seat 1, a collecting device can be provided at its welding position (which can facilitate the collection and treatment of the fume generated during the welding process and then discharge it, which is a more mature technology and is not described here).

[0034] See also Figure 1-Figure 11In order to facilitate the movement of the first welding head 14, as well as the rotation and tilting, to better weld the anchor rib 5 and the welding plate 4, to avoid the existence of false welding or empty welding, and to ensure the welding effect and efficiency, a fixed seat 11 of the driving mechanism is vertically welded on the horizontal plate 6, a driving motor 16 is installed in the middle, and a circular plate 13 is fixedly installed on the output end of the driving motor 16 through a coupling. In order to facilitate the adjustment and movement, a vertical plate 12 is welded on the processing seat 1, and a sliding guide groove 24 (with a U-shaped cross section) of a sliding component is opened inside the processing seat 1, and a sliding guide block 19 is provided inside the sliding cooperation, in order to slide limit , the top and bottom ends thereof are symmetrically provided with ball bearings 23 for rolling, the corresponding sliding guide groove 24 is provided with a guide groove 25, and the ends of the sliding guide block 19 and the circular plate 13 are both welded with a connecting member 18 of a connecting assembly, and the two connecting members 18 are rotatably connected by a connecting rod 17, and the circular plate 13 can be conveniently rotated by a driving motor 16 (which can be reversible, and thus can be conveniently moved and reset) to drive the circular plate 13 to rotate, and then the sliding guide block 19 can slide in the sliding guide groove 24, and a rectangular block 37 is fixed on the side wall of the vertical plate 12, and a reel 38 is provided inside the rectangular block 37 for rotation through a volute spring 39, and a connecting rope 40 is provided on the reel 38 The connecting rope 40 passes through the vertical plate 12 and extends to the inside of the sliding guide groove 24, and is connected to the sliding guide block 19, which can facilitate the sliding reset under the potential energy of the spiral spring 39 during the subsequent reverse rotation. The sliding guide block 19 is fixedly connected to the mounting plate 20 of the adjustment mechanism, and a hub motor 22 (or other driving devices) is arranged inside it. The output end can be fixedly installed with an adjustment plate 21 through a coupling, and the adjustment plate 21 can be conveniently rotated and adjusted. It is a relatively mature technology and will not be described in detail here. Two sets of holders 15 are welded on the adjustment plate 21 to facilitate the fixing of the first welding head 14, so that it can be easily installed. The first welding head 14 can be rotated and tilted, so that the anchor rib 5 and the welding plate 4 can be better welded and fixed. Through the driving mechanism and the adjusting mechanism, the first welding head 14 can be conveniently moved and adjusted when the anchor rib 5 is welded, so that the welding point can be fully welded. Not only can welding be performed on the upper side, but also on the lower side to ensure the welding effect. At the same time, when welding on the upper side, the first welding head 14 can be tilted downward, and when welding on the lower side, it can be tilted upward, so that the welding operation can be better performed and the welding efficiency and quality can be improved.

[0035] See also Figure 1-Figure 11In order to facilitate the clamping and moving of the anchor bar 5, it is convenient for automatic loading and at the same time ensure that there will be no displacement during the welding process, ensure stability, and then ensure the welding effect and prevent offset. The processing seat 1 is equidistantly and vertically provided with a hydraulic telescopic rod 7 of a moving mechanism, and a fixed block 8 is fixedly installed at its output end (i.e., the top end). A linear guide device 9 with a conveying component can be installed between the two fixed blocks 8 on the same side by screws. A guide slider 10 is slidably provided on the linear guide device 9, which can be driven by a linear motor to achieve reciprocating movement. Other devices such as reciprocating screws can also be used. The relatively mature technology will not be repeated here. A moving plate 36 can be fixedly installed between the two guide sliders 10 by screws. Two sets of rectangular plates 27 of clamping mechanisms are symmetrically welded under the moving plate 36. A frame plate 28 is provided under the rectangular plate 27 through a fixed rod 29. Clamp rods 26 are rotatably provided at both ends of the frame plate 28. The bottom end of the clamping rod 26 is provided with a clamping plate 33 of a clamping assembly, and rubber pads 34 are bonded to the side walls of the two clamping plates 33 that are close to each other, and anti-slip protrusions 35 are equidistantly provided on the rubber pads 34 to ensure stability during the clamping process of the anchor bar 5. The clamping mechanism also includes a first electric push rod 30 arranged in the middle of the bottom end of the rectangular plate 27. The output end of the first electric push rod 30 slides through the frame plate 28 and extends to the bottom where a moving block 31 is provided. The two ends of the moving block 31 are connected to the clamping rod 26 through a rotating rod 32. The moving mechanism is provided in conjunction with the clamping mechanism, and the anchor bar 5 can be clamped and moved conveniently, so that it can be automatically loaded and unloaded, and it can be conveniently moved and positioned, so as to facilitate subsequent welding operations, which is more convenient. At the same time, it can be clamped and positioned during the welding process to ensure stability during the welding process, so as to avoid sliding or displacement, thereby ensuring the quality of welding and avoiding displacement that causes welding tilt and the like.

[0036] Working principle: When the present invention is in use, the main body 3 of the steel section can be transported by the conveying device 2, and the conveying is stopped after it is moved to the welding station. For the loading and unloading of the welding plate 4, the loading and unloading can be realized by means of clamps, etc., and it is placed in the positioning seat 43, which can be positioned, and then moved to contact and position with the main body 3 of the steel section, so as to facilitate the welding operation. Through the operation of the second welding head 45, the welding operation can be performed on the welding plate 4 and the main body 3 of the steel section, and then the conveying device 2 continues to transport, and after it is transported to the welding station of the anchor bar 5, the hydraulic telescopic rod 7 is contracted at this time, and the fixed block 8 is moved downward, and the clamping plate 33 under the movable plate 36 is close to the anchor bar 5 (a storage device for the anchor bar 5 is provided at one end of the processing seat 1 , which can be a storage box, etc., to facilitate subsequent clamping and movement), the first electric push rod 30 is contracted, the moving block 31 is moved, and then the rotating rod 32 is cooperated with, the clamping rod 26 is rotated on the frame plate 28, the clamping plates 33 are close to each other, and the anchoring bar 5 can be clamped in cooperation with the rubber pad 34 and the anti-slip protrusion 35, and then the hydraulic telescopic rod 7 is extended, and the whole is moved up and reset, and then the linear guide device 9 works, and the guide slider 10 and the moving plate 36 are moved, and when the anchoring bar 5 is moved to the top of the welding point with the welding plate 4, the hydraulic telescopic rod 7 is contracted, and the whole is moved down, and then the anchoring bar 5 can be moved down and contacted with the welding plate 4, and then the wheel hub motor 22 is rotated clockwise, and the adjustment plate 21 is rotated and tilted, and the adjustment plate 21 is rotated and tilted. The front of the first welding head 14 is tilted downward, and at this time, the driving motor 16 rotates forward, causing the circular plate 13 to rotate, and in cooperation with the connecting rod 17 and the connecting piece 18, the sliding guide block 19 can slide in the sliding guide groove 24, and the ball 23 slides in the guide groove 25, and moves with the connecting rope 40, and then the winder 38 releases the connecting rope 40, and the volute spring 39 is forced to shrink and store potential energy, and through the welding equipment, the first welding head 14 can work to weld the upper part of the contact between the anchor bar 5 and the welding plate 4, and when it moves to the arc section of the sliding guide groove 24, the hub motor 22 rotates counterclockwise, and can cause the adjustment plate 21 to rotate, and then the front of the first welding head 14 is tilted upward, and the driving motor 16 continues to work. The welding operation can be performed on the lower part where the anchor bar 5 and the welding plate 4 are in contact. After the welding is completed, the driving motor 16 rotates in the opposite direction, and can move and reset the sliding guide block 19 in the sliding guide groove 24, and stop rotating after moving to the middle of the arc section. The first electric push rod 30 extends, and resets the clamping plate 33, and loses the clamping of the anchor bar 5. The hydraulic telescopic rod 7 extends, and the linear guide device 9 works, and can clamp and move the next anchor bar 5. The conveying device 2 works, and moves the steel body 3, and can move the next welding plate 4 to be welded to the welding station. At the same time, the driving motor 16 continues to rotate in the opposite direction, and cooperates with the volute spring 39 to store potential energy, and can reset the whole body, so that the next welding process can be conveniently carried out.

[0037] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A welding device for processing expansion joints of roads and bridges, comprising a processing seat (1), characterized in that: The processing seat (1) is provided with a steel body (3) via a conveying device (2), and welding plates (4) matching the anchor bars (5) are equidistantly provided on both side walls of the steel body (3), and welding mechanisms matching the welding plates (4) are symmetrically provided on the processing seat (1), and transverse plates (6) are fixedly provided on both sides of the processing seat (1), and an adjustment mechanism is provided on the transverse plate (6) via a driving mechanism, and a first welding head (14) is symmetrically provided on the adjustment mechanism, and a moving mechanism is provided on the moving mechanism. A movable plate (36) is provided, and a clamping mechanism is symmetrically provided below the movable plate (36), and the clamping mechanism matches the anchoring rib (5); the driving mechanism comprises a fixing seat (11) fixedly arranged on the horizontal plate (6), a driving motor (16) is fixedly arranged in the middle of the fixing seat (11), and a circular plate (13) is fixedly arranged at the output end of the driving motor (16), and the circular plate (13) is connected to the adjusting mechanism through a connecting component; the adjusting mechanism comprises a vertical plate (12) fixedly arranged on the processing seat (1) The vertical plate (12) is provided with a mounting plate (20) through a sliding assembly, an adjustment plate (21) is provided in the mounting plate (20) through a wheel hub motor (22), and the adjustment plate (21) is connected to the first welding head (14) through a clamping seat (15); the sliding assembly comprises a sliding guide groove (24) provided in the vertical plate (12), a sliding guide block (19) is slidably provided in the sliding guide groove (24), the sliding guide block (19) is fixedly connected to the mounting plate (20), and the sliding guide block (19) is Ball bearings (23) are symmetrically arranged at the upper and lower ends, a guide groove (25) matching the ball bearings (23) is provided in the sliding guide groove (24), a rectangular block (37) is fixedly arranged on the side wall of the vertical plate (12), a reel (38) is arranged inside the rectangular block (37) for rotation via a spiral spring (39), a connecting rope (40) is arranged on the reel (38), the connecting rope (40) passes through the vertical plate (12) and extends into the sliding guide groove (24), and is connected to the sliding guide block (19).

2. A welding device for processing expansion joints of roads and bridges according to claim 1, characterized in that: The connection assembly comprises a connection piece (18) arranged at the end of the sliding guide block (19) and the circular plate (13), and a connecting rod (17) is rotatably arranged between the two connection pieces (18).

3. A welding device for processing expansion joints of roads and bridges according to claim 2, characterized in that: The moving mechanism comprises a hydraulic telescopic rod (7) equidistantly arranged on the processing seat (1); a fixed block (8) is fixedly provided at the output end of the hydraulic telescopic rod (7); a conveying assembly is provided between two fixed blocks (8) on the same side; the conveying assembly comprises a linear guide device (9) arranged between the two fixed blocks (8) on the same side; a guide slider (10) is provided on the linear guide device (9); and the two guide sliders (10) are fixedly connected to the moving plate (36).

4. The welding equipment for processing road and bridge expansion joints according to claim 1 is characterized in that: The clamping mechanism comprises a rectangular plate (27) symmetrically arranged under the movable plate (36); a frame plate (28) is arranged under the rectangular plate (27) via a fixed rod (29); clamping rods (26) are rotatably arranged at both ends of the frame plate (28); and a clamping assembly is arranged at the bottom end of the clamping rod (26).

5. A welding device for processing expansion joints of roads and bridges according to claim 4, characterized in that: The clamping mechanism further comprises a first electric push rod (30) arranged at the middle of the bottom end of the rectangular plate (27), the output end of the first electric push rod (30) slidingly passing through the frame plate (28) and extending to a moving block (31) provided below, the two ends of the moving block (31) being connected to the clamping rod (26) via a rotating rod (32).

6. The welding equipment for processing expansion joints of roads and bridges according to claim 4 is characterized by: The clamping assembly comprises a clamping plate (33) fixedly arranged at the bottom end of the clamping rod (26), and rubber pads (34) are provided on the side walls of the two clamping plates (33) close to each other, and anti-slip protrusions (35) are equidistantly provided on the rubber pads (34).

7. The welding equipment for processing expansion joints of roads and bridges according to claim 1 is characterized by: The welding mechanism comprises a hollow groove (41) symmetrically provided on the processing seat (1); a bottom plate (46) is fixedly provided at the bottom end of the hollow groove (41); a second electric push rod (47) is symmetrically provided on the bottom plate (46); a lifting block (44) is provided at the output end of the second electric push rod (47); second welding heads (45) are symmetrically provided on the two side walls of the lifting block (44); a moving device (42) is also provided on one side of the hollow groove (41); and a positioning seat (43) matching the welding plate (4) is provided on the moving device (42).

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