Novel aluminum alloy positioning and welding device for bridge

Abstract

The invention discloses a novel aluminum alloy positioning and welding device for a bridge, and relates to the technical field of metal welding. Comprising a welding rack, a supporting frame is fixedly installed on the rear side of the welding rack, a multi-axis moving mechanism is connected to the supporting frame, a welding head is connected to the front end of the multi-axis moving mechanism through a welding assembly, and a welding platform is arranged in a groove in the upper end of the welding rack in a nested mode; the device comprises a welding platform, left-right symmetrical rail grooves are formed in the front side and the rear side of the welding platform, a moving frame is slidably mounted in the rail grooves formed in the welding platform, a connecting frame is fixedly mounted at the upper end of the moving frame, a threaded rod is rotatably mounted in the rail groove of the connecting frame, and a grinding assembly is mounted on the outer side of the threaded rod. The plates with different thicknesses are extruded through the abutting plate, then angle deflection of the grinding assembly is driven through movement of the abutting plate, and meanwhile the swing amplitude of the welding head during surfacing is changed through movement of the abutting plate, so that the welding efficiency of the device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal welding, and particularly to a positioning welding device for a new type of aluminum alloy used in bridges. Background Art

[0002] Aluminum alloy plates are often used to replace the corroded components of old steel bridges or bridge facilities such as pedestrian bridges, park landscape bridges, and bicycle lane bridges due to their high strength and light weight. Aluminum alloy welding is a common metal processing technology, and aluminum alloy is also widely used in aerospace, automotive manufacturing, construction, and other fields due to its corrosion resistance and electrical conductivity. Welding aluminum alloy has some unique features compared to welding other metals because aluminum alloy has a low melting point and high thermal conductivity. Common aluminum alloy welding methods include tungsten inert gas welding, laser welding, friction stir welding, etc. The aluminum alloy material is heated to a molten state through high temperature, and then the weld seam is filled with a filler metal wire to form a connection.

[0003] However, when welding plates, the thickness and width of different plates vary, so weld seams with different angles and sizes need to be opened. However, when opening the seam, an oxide film may form on the surface of the aluminum plate weld seam due to high temperature, which will affect the subsequent welding effect. At the same time, some existing welding devices can only perform welding operations on plates of one specification during operation and cannot adjust the grinding angle in real time for different plates. Also, when welding plates of different thicknesses, the width of the weld seam will change, and the welding swing amplitude of the welding head of some existing welding devices cannot be adjusted in real time according to different plates, thus affecting the grinding efficiency.

[0004] In view of the above problems, there is an urgent need for innovative design on the original basis. Summary of the Invention

[0005] The purpose of the present invention is to provide a positioning welding device for a new type of aluminum alloy used in bridges to solve the problems raised in the above background art. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solutions are too single.

[0006] To achieve the above object, the present invention provides the following technical solution: A positioning welding device for a new type of aluminum alloy used in bridges, including a welding frame. A support frame is fixedly installed at the rear side of the welding frame. A multi-axis moving mechanism is connected to the support frame. The front end of the multi-axis moving mechanism is connected to a welding head through a welding component. A welding platform is nested inside the upper groove of the welding frame. Symmetric left and right track grooves are opened on the front and rear sides of the welding platform. A driving roller for transporting materials is rotationally arranged in the top cavity of the welding platform. A moving frame is slidably installed in the track groove opened on the welding platform. A connecting frame is fixedly installed at the upper end of the moving frame. A threaded rod is rotationally installed in the track groove of the connecting frame. A grinding component is installed outside the threaded rod. A contact plate is slidably installed inside the front moving frame through a hydraulic pressure component.

[0007] Preferably, the welding component includes a connecting block. The connecting block is fixedly installed at the lower side of the front end of the multi-axis moving mechanism. The front end of the connecting block is rotationally installed with a connecting plate through a rod. The welding head is connected to the front side of the connecting plate. A contact block is slidably connected inside the hole opened above the connecting plate. The rear end of the contact block is connected to an electric push rod. The electric push rod is fixed in the inner cavity of the rotating disk. The rear end of the rotating disk is rotationally installed inside the top end of the front side of the multi-axis moving mechanism through a driving motor.

[0008] Preferably, the length of the hole opened above the connecting plate corresponds to the diameter of the rotating disk, and the size of the contact block corresponds to the width of the hole opened above the connecting plate.

[0009] Preferably, the maximum stroke of the electric push rod corresponds to the radius of the rotating disk, and the electric push rod is used to adjust the position of the contact block on the rotating disk.

[0010] Preferably, the hydraulic pressure component includes a first hydraulic cylinder. The first hydraulic cylinder is installed in the inner cavity of the moving frame. A first push rod is slidably arranged inside the first hydraulic cylinder. A displacement sensor is fixed at the lower end of the first push rod. The first push rod is connected to the contact plate through a connecting rod.

[0011] Preferably, one side of the contact plate is designed as an inclined surface structure, and the inclined surface structure of one side of the contact plate faces the feeding end.

[0012] Preferably, the grinding component includes a threaded block. The threaded block is fixedly sleeved outside the threaded rod in a sliding manner. A second hydraulic cylinder is fixed inside the inclined hole of the threaded block. A second push rod is slidably installed inside the second hydraulic cylinder. The lower end of the second push rod is rotationally installed with a movable rod. The movable rod is rotationally installed in the lower groove of the threaded block. The front end of the movable rod is connected to a grinding head through a motor.

[0013] Preferably, the inner cavity of the second hydraulic cylinder is connected to the inner cavity of the first hydraulic cylinder through a hose. The volume of the inner cavity of the first hydraulic cylinder is in a proportional relationship with that of the second hydraulic cylinder. The threads on the left and right threaded blocks are oppositely arranged.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the present invention, the trapezoidal abutting plate is provided to facilitate the input of materials. At the same time, the elastic force of the compression spring enables the abutting plate to obtain a downward pressure for squeezing and limiting the materials. An adsorbent is arranged below the abutting plate, so that the abutting plate can be fixed on the materials. As the materials enter the device, the position of the abutting plate will change with the change in the thickness of the aluminum alloy plate. At the same time, the change in the position of the abutting plate will drive the position of the first push rod to change synchronously, causing the amount of oil in the first hydraulic cylinder to change. Thus, the change in the amount of oil is transmitted to the second hydraulic cylinder through the hose. Furthermore, the second hydraulic cylinder drives the grinding head to deflect through the second push rod, enabling the grinding head to adapt to the welding grooves of plates with different thicknesses, thereby improving the grinding effect of the grinding head on the welds of the plates and reducing the influence of the oxide film on welding. 2. In the present invention, the displacement sensor is connected to the first push rod, so that the change amount of the first push rod can be transmitted to the external controller through the displacement sensor. Thus, the telescopic amount of the electric push rod inside the rotating disk is adjusted through the change amount, and the changed electric push rod drives the abutting block to move, causing the deflection angle of the connecting plate to change synchronously. Furthermore, the deflection angle of the welding head can be adjusted according to the interval of different welding grooves, increasing the overall applicability of the device. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structure schematic diagram of the present invention; Figure 2 It is a three-dimensional structure schematic diagram of the welding assembly of the present invention; Figure 3 It is an exploded structure schematic diagram of the welding assembly of the present invention; Figure 4 It is a schematic diagram of the internal structure of the rotating disk of the present invention; Figure 5 It is a schematic diagram of the internal sectional structure of the moving frame of the present invention; Figure 6 It is a schematic diagram of the structure of the moving frame and the connecting frame of the present invention; Figure 7 It is a three-dimensional structure schematic diagram of the grinding assembly of the present invention; Figure 8 It is a schematic diagram of the top view structure of the welding machine frame of the present invention.

[0016] In the figure: 1, welding frame; 2, support frame; 3, multi-axis moving mechanism; 4, welding head; 401, connecting block; 402, connecting plate; 403, rotating disk; 4041, electric push rod; 4042, abutting block; 5, welding platform; 501, driving roller; 6, moving frame; 601, hydraulic cylinder 1; 602, pushing rod 1; 603, displacement sensor; 604, connecting rod; 7, connecting frame; 701, threaded rod; 801, threaded block; 802, hydraulic cylinder 2; 803, pushing rod 2; 804, movable rod; 805, grinding head; 9, abutting plate. Detailed implementation manners

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Please refer to Figure 1 - FIG. 8, the present invention provides a technical solution: a positioning welding device for a new type of aluminum alloy used in bridges, including a welding frame 1. A support frame 2 is fixedly installed at the rear side of the welding frame 1. A multi-axis moving mechanism 3 is connected to the support frame 2. The front end of the multi-axis moving mechanism 3 is connected with a welding head 4 through a welding assembly. A welding platform 5 is nested inside the upper groove of the welding frame 1. Symmetrically arranged track grooves are opened on the front and rear sides of the welding platform 5. Driving rollers 501 for transporting materials are rotationally arranged in the top cavity of the welding platform 5. A moving frame 6 is slidably installed in the track grooves opened on the welding platform 5. A connecting frame 7 is fixedly installed at the upper end of the moving frame 6. A threaded rod 701 is rotationally installed in the track groove of the connecting frame 7. A grinding assembly is installed on the outer side of the threaded rod 701. An abutting plate 9 is slidably installed inside the front moving frame 6 through a hydraulic pressure assembly.

[0019] As an implementation manner of the present invention, the welding assembly includes a connecting block 401. The connecting block 401 is fixedly installed at the lower side of the front end of the multi-axis moving mechanism 3. The front end of the connecting block 401 is rotationally installed with a connecting plate 402 through a rod. The welding head 4 is connected to the front side of the connecting plate 402. An abutting block 4042 is slidably connected inside the opening above the connecting plate 402. The electric push rod 4041 is connected to the rear end of the abutting block 4042. The electric push rod 4041 is fixed in the inner cavity of the rotating disk 403. The rear end of the rotating disk 403 is rotationally installed inside the top end of the front side of the multi-axis moving mechanism 3 through a driving motor.

[0020] As an implementation manner of the present invention, the length of the opening above the connecting plate 402 corresponds to the diameter of the rotating disk 403, and the size of the abutting block 4042 corresponds to the width of the opening above the connecting plate 402.

[0021] As an embodiment of the present invention, the maximum stroke of the electric push rod 4041 corresponds to the radius of the rotating disk 403, and the electric push rod 4041 is used to adjust the position of the abutting block 4042 on the rotating disk 403.

[0022] As an embodiment of the present invention, the hydraulic pressure assembly includes a first hydraulic cylinder 601, the first hydraulic cylinder 601 is installed in the inner cavity of the moving frame 6, a first push rod 602 is slidably arranged inside the first hydraulic cylinder 601, a displacement sensor 603 is fixed at the lower end of the first push rod 602, and the first push rod 602 is connected to an abutting plate 9 through a connecting rod 604.

[0023] As an embodiment of the present invention, one side of the abutting plate 9 is designed as an inclined surface structure, and the inclined surface structure on one side of the abutting plate 9 faces the feeding end.

[0024] After placing the plate on the welding platform 5, the plate will push the abutting plate 9 to move upward. The upward movement of the abutting plate 9 drives the first push rod 602 through the connecting rod 604 to squeeze the first hydraulic cylinder 601, so that the second push rod 803 inside the second hydraulic cylinder 802 pushes the grinding head 805 to deflect at an angle under the oil conduction. Subsequently, the driving roller 501 is started, and the welded plate is transported to the middle position of the welding platform 5 for abutting, and the aluminum alloy plate is welded by the welding assembly.

[0025] As an embodiment of the present invention, the grinding assembly includes a threaded block 801, the threaded block 801 is fixedly sleeved outside the threaded rod 701 in a sliding manner, a second hydraulic cylinder 802 is fixed in the inclined opening of the threaded block 801, a second push rod 803 is slidably installed inside the second hydraulic cylinder 802, the lower end of the second push rod 803 is rotatably installed with a movable rod 804, the movable rod 804 is rotatably installed in the lower groove of the threaded block 801, and the front end of the movable rod 804 is connected with a grinding head 805 through a motor.

[0026] As an embodiment of the present invention, the inner cavity of the second hydraulic cylinder 802 is connected to the inner cavity of the first hydraulic cylinder 601 through a hose, the inner cavity volume of the first hydraulic cylinder 601 is in a proportional relationship with the second hydraulic cylinder 802, and the threads on the threaded blocks 801 on the left and right sides are oppositely arranged.

[0027] As the abutting plate 9 moves, it drives the displacement sensor 603 to synchronously adjust the position. At the same time, the displacement sensor 603 transmits the displacement amount to the controller through an electrical signal, and the controller changes the extension amount of the electric push rod 4041. Then, the electric push rod 4041 and the abutting block 4042 drive the deflection angle of the connecting plate 402 to change. At the same time, the connecting plate 402 drives the welding head 4 to offset synchronously to adapt to different welding grooves.

[0028] Working principle: Nest the welding platform 5 into the welding frame 1, and place the aluminum alloy plate with the weld seam opened on the welding platform 5. As the aluminum alloy plate enters, the abutting plate 9 moves upward, and under the action of the internal compression spring and the bottom adsorption assembly, the aluminum alloy plate is limited and fixed. During the upward movement of the abutting plate 9, the push rod 602 is driven to move by the connecting rod 604, squeezing the hydraulic oil inside the hydraulic cylinder 601, and the hydraulic oil is transmitted to the hydraulic cylinder 802 through a hose. At this time, the increase in the hydraulic oil inside the hydraulic cylinder 802 causes the push rod 803 to move outward, and then the movable rod 804 drives the grinding head 805 to deflect in angle. At the same time, align the weld seam with the grinding head 805 whose angle has been adjusted. Start the motor to drive the threaded rod 701 to rotate, and drive the grinding assembly 8 to move on the connecting frame 7 through the threaded movement with the threaded block 801 to grind the weld seam of the plate, preventing the oxide film from affecting the welding effect between the plates. At the same time, start the driving roller 501 to drive the plate to move inward to the welding frame 1 until the plates are butted; As the abutting plate 9 moves upward, the push rod 602 drives the displacement sensor 603 to move synchronously. Then the displacement sensor 603 transmits the movement stroke of the push rod 602 to the controller through an electrical signal. Subsequently, the controller converts the signal and transmits it to the electric push rod 4041, changing the stroke of the electric push rod 4041. As the thickness of the plate increases, the ejection amount of the electric push rod 4041 decreases, driving the abutting block 4042 to move inward toward the inner side of the track groove opened on the connecting plate 402, and driving the rotating disk 403 to rotate through the rotating motor. Then the abutting block 4042 moves up and down in the track groove, driving the connecting plate 402 to deflect, so that the connecting plate 402 can drive the welding assembly to deflect in angle, improving the welding efficiency and welding effect.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A positioning welding device for a new type of aluminum alloy used in bridges, comprising a welding frame (1), characterized in that: A support frame (2) is fixedly installed at the rear side of the welding frame (1). A multi-axis moving mechanism (3) is connected to the support frame (2). The front end of the multi-axis moving mechanism (3) is connected with a welding head (4) through a welding assembly. A welding platform (5) is nested inside a groove at the upper end of the welding frame (1). Symmetrically arranged track grooves are formed on the front and rear sides of the welding platform (5). A driving roller (501) for material transportation is rotatably arranged in an orderly manner in a cavity at the top of the welding platform (5). A moving frame (6) is slidably installed in the track grooves formed in the welding platform (5). A connecting frame (7) is fixedly installed at the upper end of the moving frame (6). A threaded rod (701) is rotatably installed in a track groove of the connecting frame (7). A grinding assembly is installed on the outer side of the threaded rod (701). A contact plate (9) is slidably installed inside the inner side of the front moving frame (6) through a hydraulic pressure assembly.

2. The positioning and welding device for a new type of aluminum alloy used in bridges according to claim 1, characterized in that: The welding assembly includes a connecting block (401). The connecting block (401) is fixedly installed at the lower side of the front end of the multi-axis moving mechanism (3). The front end of the connecting block (401) is rotatably installed with a connecting plate (402) through a rod. The welding head (4) is connected to the front side of the connecting plate (402). A contact block (4042) is slidably connected in an opening above the connecting plate (402). An electric push rod (4041) is connected to the rear end of the contact block (4042). The electric push rod (4041) is fixed in an inner cavity of a rotating disc (403). The rear end of the rotating disc (403) is rotatably installed inside the front top end of the multi-axis moving mechanism (3) through a driving motor.

3. A positioning welding device for a new type of aluminum alloy used in bridges according to claim 2, characterized in that: The length of the opening above the connecting plate (402) corresponds to the diameter of the rotating disc (403). The size of the contact block (4042) corresponds to the width of the opening above the connecting plate (402).

4. A positioning and welding device for a new type of aluminum alloy used in bridges according to claim 3, characterized in that: The maximum stroke of the electric push rod (4041) corresponds to the radius of the rotating disc (403). The electric push rod (4041) is used to adjust the position of the contact block (4042) on the rotating disc (403).

5. The positioning and welding device for a new type of aluminum alloy used in bridges according to claim 4, wherein: The hydraulic pressure assembly includes a first hydraulic cylinder (601). The first hydraulic cylinder (601) is installed in an inner cavity of the moving frame (6). A push rod one (602) is slidably arranged inside the first hydraulic cylinder (601). A displacement sensor (603) is fixed at the lower end of the push rod one (602). The push rod one (602) is connected with the contact plate (9) through a connecting rod (604).

6. The positioning and welding device for a novel aluminum alloy used in bridges according to claim 5, characterized in that: One side of the contact plate (9) is designed as an inclined surface structure. The inclined surface structure on one side of the contact plate (9) faces the feeding end.

7. A positioning and welding device for a new type of aluminum alloy used in bridges according to claim 6, characterized in that: The grinding assembly includes a threaded block (801) which is fixedly sleeved on the outer side of the threaded rod (701) in a sliding manner. An oil cylinder II (802) is fixedly installed in an inclined opening of the threaded block (801). A push rod II (803) is slidably installed inside the oil cylinder II (802). A movable rod (804) is rotatably installed at the lower end of the push rod II (803). The movable rod (804) is rotatably installed in a groove at the lower end of the threaded block (801). The front end of the movable rod (804) is connected with a grinding head (805) through a motor.

8. A positioning welding device for a new type of aluminum alloy used in bridges according to claim 7, characterized in that: The inner cavity of the oil cylinder II (802) is connected with the inner cavity of the oil cylinder I (601) through a hose. The inner cavity volume of the oil cylinder I (601) is in a proportional relationship with that of the oil cylinder II (802). The threads on the threaded blocks (801) on the left and right sides of the threaded blocks (801) are oppositely arranged.

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