A threshing machine drum welding auxiliary device

Abstract

The present invention relates to the technical field of thresher processing, and specifically relates to an auxiliary device for welding the drum of a thresher, which includes a welding platform, a number of U-shaped brackets equidistantly installed on the left and right of the welding platform, a locking mechanism, a limiting mechanism and a guiding mechanism. Through the mutual cooperation of the locking mechanism, the limiting mechanism and the guiding mechanism, the present invention implements multi-point support and multi-directional limitation on the main shaft, implements centering and clamping on the amplitude disc to ensure the relative stability between the amplitude disc and the main shaft, guides and limits the welding torch, so that the welding torch accurately aligns with the welding part between the main shaft and the amplitude disc and maintains continuous relative stability with the amplitude disc. Without manual adjustment, the relative stability among the main shaft, the amplitude disc and the welding torch is automatically improved and maintained, which not only improves the welding accuracy but also improves the welding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of thresher processing, in particular to thresher roller welding auxiliary equipment. Background Art

[0002] A thresher is an agricultural machine used to separate grains from straw. It can effectively remove grain particles while minimizing damage to the grains. The thresher drum is one of the core components of the thresher. Common thresher drums are mainly composed of a main shaft, several webs and rakes. The webs are generally installed on the main shaft by welding, and the rakes are installed on the webs by bolting. When welding and assembling the existing thresher drum, it is necessary to first equidistantly sleeve several webs on the main shaft, and then place the main shaft on the welding frame and connect it to the motor on the welding frame; during welding, an electric push rod is used to push the welding gun to align with the welding part between the main shaft and the webs for welding. At the same time, the motor drives the main shaft to rotate, so that the welding gun performs 360° welding on the welding part between the main shaft and the webs.

[0003] However, the above welding process still has the following shortcomings: 1. Since the web is manually mounted on the main shaft, when the electric push rod pushes the welding gun to the welding station, there will be a certain deviation between the nozzle of some welding guns and the welding part between the main shaft and the web. The worker needs to adjust the position of the corresponding welding gun nozzle so that it can accurately align with the welding part, which will affect the efficiency of roller welding. However, if no adjustment is made, it will directly affect the welding operation or welding effect; 2. The relative position stability between the web and the main shaft, and the relative position stability between the web and the welding gun nozzle need to be improved. When the motor drives the main shaft and the web to rotate, the web is more susceptible to vibration and undergoes a certain position change, resulting in a position deviation between the welding part and the welding gun nozzle, which in turn affects the welding quality. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a thresher drum welding auxiliary equipment, including a welding platform and a plurality of U-shaped brackets equidistantly installed on the welding platform on the left and right sides, the U-shaped brackets are installed with a locking mechanism for locking the main shaft and symmetrically distributed on the left and right sides, a limiting mechanism for centering the width plate is installed between the left and right locking mechanisms, a guiding mechanism for guiding the welding gun to align with the weld is installed on the locking mechanism, and a driving mechanism is installed on the welding platform.

[0005] The locking mechanism includes a support seat fixedly mounted on the top of the vertical section of the U-shaped bracket and used to support and limit the main shaft, and a pressing block slidably mounted on the support seat and used to press and limit the main shaft.

[0006] The limiting mechanism includes L-shaped ejector rods slidably installed on opposite sides of two support seats corresponding to the same U-shaped bracket. A propulsion assembly and a first locking assembly for pushing the left and right L-shaped ejector rods to move towards each other to center and clamp the amplitude disc are also installed on the support seats. The first locking assembly includes a plug rod that slides upward under the push of the L-shaped ejector rod to insert and lock the pressing block on the support seat.

[0007] The guiding mechanism includes a V-shaped support rod slidably installed back and forth on the top of the pressing block, a second locking assembly and a V-shaped limiting member installed at the front end of the support rod. The second locking assembly automatically locks the support rod on the pressing block. A hoop for fixing the welding torch is arranged on the support rod. A pressing rod is arranged on the top of the pressing block. The V-shaped limiting member cooperates with the pressing rod to perform a surrounding limit on the welding torch nozzle.

[0008] In a possible implementation manner, arc-shaped grooves adapted to the main shaft are provided on both the support seat and the pressing block, and the corresponding upper and lower arc-shaped grooves cooperate with each other. A plurality of rollers are rotatably installed inside the arc-shaped grooves.

[0009] In a possible implementation manner, the propulsion assembly includes a threaded sleeve rotatably installed inside the support seat and sleeved with a gear on the outside. A threaded rod is threadedly connected inside the threaded sleeve. The threaded rod is slidably connected to the left and right of the corresponding support seat. One end of the threaded rod close to the center of the U-shaped bracket slides through the outside of the support seat and is fixedly connected to the vertical section of the L-shaped ejector rod. A driving rod is slidably installed back and forth on the support seat below the threaded sleeve. A rack for driving the threaded sleeve to rotate is provided at the top of the driving rod. The rack meshes with the gear.

[0010] In a possible implementation manner, a baffle is fixedly connected to the plug rod. The plug rod and the baffle are both slidably installed inside the support seat. A first return spring sleeved on the outside of the plug rod is fixedly connected between the top of the baffle and the inner wall of the support seat. A wedge block is fixedly connected to the top of the horizontal section of the L-shaped ejector rod and is located below the plug rod. A plug plate fixedly connected to the front end of the pressing block and inserted and matched with the support seat and provided with a through hole is provided. The top of the plug rod is inserted and matched with the through hole.

[0011] In a possible implementation manner, an elastic telescopic rod is fixedly connected to the rear side of the pressing block. A push plate is fixedly connected to the rear side of the telescopic section of the elastic telescopic rod. The bottom of the push plate is fixedly connected to the driving rod.

[0012] In a possible implementation manner, the support rod is vertically arranged with the opening facing forward. The number of hoops on the support rod is two. When the welding torch is fixedly installed between the corresponding two hoops, the welding torch and the support rod form a triangular structure on the vertical plane.

[0013] In a possible implementation manner, a guiding groove is formed at the top of the pressing block. The front end of the horizontal section of the support rod is slidably connected to the guiding groove in the front-back direction. The V-shaped limiting member is fixedly connected to one side of the horizontal section of the support rod close to the center of the U-shaped bracket. The pressing rod is fixedly installed at the top of the pressing block and is located on the front side of the guiding groove. Both ends of the V-shaped limiting member are inserted and matched with the pressing rod.

[0014] In a possible implementation manner, the second locking assembly includes a T-shaped rod whose vertical section is slidably connected to the horizontal section of the support rod up and down. The horizontal section of the T-shaped rod is located above the horizontal section of the support rod. A locking block is fixedly connected to the bottom of the vertical section of the T-shaped rod. A sliding groove for the locking block to slide up and down is formed on the support rod. The locking block is slidably installed in the sliding groove up and down, and both the left and right ends of the locking block protrude to the outside of the sliding groove. The V-shaped limiting member is located below the locking block. A second return spring sleeved on the outside of the T-shaped rod is fixedly connected between the top of the locking block and the inner wall of the sliding groove. A locking groove for inserting and matching with the locking block is formed at the top of the pressing block and at the front end of the guiding groove.

[0015] In a possible implementation manner, an unlocking assembly is further installed on the horizontal section of the support rod. The unlocking assembly includes a lever rotatably installed at the top of the horizontal section of the support rod. An activity groove is formed in the first half section of the lever. The horizontal section of the T-shaped rod is movably installed in the activity groove. A third return spring is fixedly connected between the bottom of the second half section of the lever and the top of the support rod.

[0016] In a possible implementation manner, the driving mechanism includes guiding slide rails fixedly installed at the rear side of the welding platform and corresponding to the U-shaped brackets one by one. Sliders are slidably installed on the guiding slide rails in the front-back direction. An electric push rod for pushing the slider to slide back and forth is fixedly connected to the rear side of the guiding slide rail. The front end of the telescopic section of the electric push rod is fixedly connected to the slider. The rear ends of the driving rod and the support rod are both fixedly connected to the corresponding slider.

[0017] The beneficial effects of the present invention are as follows: 1. Through the mutual cooperation of the locking mechanism, the limiting mechanism and the guiding mechanism, the present invention implements multi-point support and multi-directional limitation on the main shaft, implements centering and clamping on the amplitude disc to ensure the relative stability between the amplitude disc and the main shaft, guides and limits the welding torch, so that the welding torch accurately aligns with the welding part between the main shaft and the amplitude disc and maintains continuous relative stability with the amplitude disc. Without manual adjustment, the relative stability between the main shaft, the amplitude disc and the welding torch is automatically improved and maintained, which not only improves the welding accuracy but also improves the welding efficiency.

[0018] 2. The present invention uses the L-shaped ejector rods located on the left and right sides of the amplitude disc to clamp and limit the amplitude disc left and right, so as to improve the accuracy of the amplitude disc position and the stability during the rotation of the amplitude disc, which is convenient for the subsequent welding torch to accurately align with the welding part between the main shaft and the amplitude disc and improves the welding effect.

[0019] 3. In the process of clamping the web by the L-shaped push rod of the present invention, the top end of the insertion rod is inserted into the through hole on the insertion plate through the cooperation of the L-shaped push rod and the wedge block, locking the clamping block and the support seat together, thereby improving the relative stability between the clamping block and the support seat, and then improving the firmness of the main shaft limit.

[0020] 4. Based on the locking of the clamping block and the support seat, the present invention uses the locking component 2 to adaptively lock the support rod on the clamping block. At this time, the nozzle of the welding gun just moves to the top of the main shaft, and the V-shaped limiter and the clamping rod are plugged together to form a horizontal triangular structure. The nozzle of the welding gun is confined within the horizontal triangular structure and is subject to an embracing limit, ensuring that the nozzle of the welding gun is continuously and stably aligned with the welding part between the main shaft and the web during the subsequent welding process, thereby improving the accuracy of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a three-dimensional structural diagram of the locking mechanism, limiting mechanism and driving mechanism of the present invention.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the locking mechanism of the present invention.

[0024] Figure 4 It is a partial cross-sectional view of the limiting mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the guiding mechanism of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the locking component 2 of the present invention.

[0027] Figure 7 It is a cross-sectional view of the locking mechanism, limiting mechanism and driving mechanism of the present invention in the initial state.

[0028] In the figure: 1, welding platform; 11, U-shaped bracket; 2, locking mechanism; 21, support base; 22, pressing block; 221, insertion plate; 23, elastic telescopic rod; 24, push plate; 3, limiting mechanism; 31, L-shaped ejector rod; 32, propulsion assembly; 321, threaded sleeve; 322, threaded rod; 323, drive rod; 33, first locking assembly; 331, insertion rod; 332, baffle; 333, first return spring; 334, wedge block; 4, guiding mechanism; 41, support rod; 411, hoop; 42, guiding groove; 43, second locking assembly; 431, T-shaped rod; 432, locking block; 433, second return spring; 434, locking groove; 44, unlocking assembly; 441, lever; 442, moving groove; 443, third return spring; 444, connecting rod; 45, V-shaped limiting member; 46, pressing rod; 5, driving mechanism; 51, guiding slide rail; 52, slider; 53, electric push rod. Detailed implementation manners

[0029] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific implementation manners disclosed below.

[0030] Please refer to Figure 1 and Figure 2 , a threshing machine drum welding auxiliary device, including a welding platform 1 and a plurality of U-shaped brackets 11 installed on the welding platform 1 at equal intervals left and right. A locking mechanism 2 for locking the main shaft and symmetrically distributed left and right is installed on the U-shaped bracket 11. A limiting mechanism 3 for centering and limiting the amplitude disc is installed between the two locking mechanisms 2 on the left and right. A guiding mechanism 4 for guiding the welding torch to align with the weld seam is installed on the locking mechanism 2. A driving mechanism 5 is installed on the welding platform 1.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 , the locking mechanism 2 includes a support base 21 fixedly installed at the top of the vertical section of the U-shaped bracket 11 and used for supporting and limiting the main shaft, and a pressing block 22 slidably installed front and back on the support base 21 and used for pressing and limiting the main shaft.

[0032] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 7 , arc-shaped grooves adapted to the main shaft are provided on both the support base 21 and the pressing block 22, and the two arc-shaped grooves corresponding up and down cooperate with each other. A plurality of rollers are rotatably installed inside the arc-shaped grooves.

[0033] In the initial state, the pressing block 22 slides to the rear side of the support base 21. Before welding, the main shaft sleeved with the amplitude disc is placed in the arc-shaped groove on the lower side, and the amplitude disc is located between the two relatively left and right support bases 21 on the U-shaped bracket 11. One end of the main shaft is connected to the existing motor through a coupling, and the other end is rotatably installed on the welding platform 1 through a coupling. Then, the driving mechanism 5 is used to drive the pressing block 22 to slide forward, so that the two corresponding arc-shaped grooves are joined together to limit and support the main shaft, improving the stability of the main shaft during rotation.

[0034] Please refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 , the limiting mechanism 3 includes L-shaped ejector rods 31 slidably installed on the opposite sides of the two support bases 21 corresponding to the same U-shaped bracket 11. A propulsion assembly 32 and a first locking assembly 33 for pushing the left and right L-shaped ejector rods 31 to move towards each other to clamp the amplitude disc in the center are also installed on the support base 21. The first locking assembly 33 includes a plug rod 331 that slides upward under the push of the L-shaped ejector rod 31 to insert and lock the pressing block 22. A baffle 332 is fixedly connected to the plug rod 331. The plug rod 331 and the baffle 332 are both slidably installed up and down inside the support base 21. A first return spring 333 sleeved outside the plug rod 331 is fixedly connected between the top of the baffle 332 and the inner wall of the support base 21. A wedge block 334 located below the plug rod 331 is fixedly connected to the top of the horizontal section of the L-shaped ejector rod 31. The inclined surface of the wedge block 334 close to the center of the corresponding U-shaped bracket 11 is slidably matched with the bottom end of the plug rod 331. A plug plate 221 that is inserted and matched with the support base 21 and has a through hole is fixedly connected to the front end of the pressing block 22. The top of the plug rod 331 is inserted and matched with the through hole. It should be noted that a number of balls are rotatably installed on the side of the vertical section of the L-shaped ejector rod 31 close to the center of the corresponding U-shaped bracket 11, and the friction between the L-shaped ejector rod 31 and the amplitude disc is reduced through the balls to avoid affecting the rotation of the amplitude disc during the welding process.

[0035] Please refer to Figure 2 , Figure 4 and Figure 7 , the propulsion assembly 32 includes a threaded sleeve 321 rotatably installed inside the support base 21 and sleeved with a gear on the outside. A threaded rod 322 is threadedly connected inside the threaded sleeve 321. The threaded rod 322 is slidably connected to the left and right of the corresponding support base 21. One end of the threaded rod 322 close to the center of the U-shaped bracket 11 penetrates to the outside of the support base 21 and is fixedly connected to the vertical section of the corresponding L-shaped ejector rod 31. A driving rod 323 is slidably installed back and forth on the support base 21 below the threaded sleeve 321. A rack for driving the threaded sleeve 321 to rotate is provided at the top of the driving rod 323, and the rack is meshed with the gear.

[0036] Please refer to Figure 2 、 Figure 3 、 Figure 5 and Figure 7 , a rear side of the pressing block 22 is fixedly connected with an elastic telescopic rod 23, a rear side of a telescopic section of the elastic telescopic rod 23 is fixedly connected with a push plate 24, and a bottom of the push plate 24 is fixedly connected to the driving rod 323.

[0037] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 7 , in an initial state, the driving rod 323 is located at a rear side of the support base 21, and the elastic telescopic rod 23 is in a natural extension state (as shown in Figure 7 ). The main shaft sleeved with the amplitude disc is placed in the lower arc-shaped groove, and the amplitude disc is located between two relatively left and right support bases 21 on the U-shaped bracket 11. The driving rod 323 is pushed forward by the driving mechanism 5. The driving rod 323 drives the pressing block 22 to move forward through the push plate 24 and the elastic telescopic rod 23 until the pressing block 22 presses on the main shaft. At this time, the rack is located at the rear side of the gear and the two are not engaged, and when the pressing block 22 and the support base 21 are joined together, the insertion plate 221 is completely inserted into the support base 21 and the through hole on the insertion plate 221 is located directly above the corresponding insertion rod 331. At this time, the driving rod 323 just moves forward to a state where the rack and the gear are engaged.

[0038] After that, as the driving mechanism 5 continues to push the driving rod 323 and the push plate 24 forward, the elastic telescopic rod 23 will be compressed and contracted. The driving rod 323 drives the threaded sleeve 321 to rotate, and then the threaded sleeve 321 drives the threaded rod 322 to move towards the center of the U-shaped bracket 11. The L-shaped ejector rods 31 on the left and right sides of the amplitude disc will move towards the center of the U-shaped bracket 11 under the push of the corresponding threaded rods 322 and clamp and limit the amplitude disc left and right, so as to improve the accuracy of the position of the amplitude disc and the stability during the rotation of the amplitude disc, which is convenient for the subsequent welding torch to accurately align with the welding part (i.e., the weld seam) between the main shaft and the amplitude disc and improve the welding effect.

[0039] During the process of the L-shaped ejector rod 31 clamping the amplitude disc, the L-shaped ejector rod 31 will drive the wedge block 334 to move towards the center of the corresponding U-shaped bracket 11. The inclined surface of the wedge block 334 is used to push the insertion rod 331 to move upward. At this time, the first return spring 333 will be compressed and contracted, and the top end of the insertion rod 331 will be inserted into the through hole on the insertion plate 221, locking the pressing block 22 and the support base 21 together, improving the relative stability between the pressing block 22 and the support base 21, and then improving the firmness of the limit on the main shaft.

[0040] See also Figure 1 、 Figure 2 、 Figure 5 and Figure 6 The guiding mechanism 4 includes a support rod 41 that is mounted on the top of the pressing block 22 for sliding back and forth and is used to guide and support the welding gun, a locking assembly 43 that is mounted on the front end of the support rod 41 and positions the support rod 41, and a V-shaped limiter 45 and a pressing rod 46 for calibrating and aligning the welding gun nozzle. The support rod 41 is a V-shaped structure.

[0041] See also Figure 2 、 Figure 5 and Figure 6 The front and rear ends of the support rod 41 are fixedly mounted with clamps 411 for fixing the welding gun. The support rod 41 is vertically arranged with the opening facing forward. When the welding gun is fixedly mounted between the two clamps 411, the welding gun and the support rod 41 form a triangular structure on the vertical plane.

[0042] By forming the support rod 41 and the welding gun into a triangular structure, the stability of the welding gun during movement and welding is improved, thereby improving the accuracy of welding the main shaft and the web by the welding gun.

[0043] See also Figure 2 、 Figure 3 、 Figure 5 and Figure 6 A guide groove 42 is provided on the top of the pressing block 22, and the front end of the horizontal section of the support rod 41 is connected to the guide groove 42 for front and rear sliding. The V-shaped limiter 45 is fixedly connected to the side of the horizontal section of the support rod 41 close to the center of the U-shaped bracket 11, and the pressing rod 46 is fixedly installed on the top of the pressing block 22 and is located in front of the guide groove 42. The V-shaped limiter 45 is arranged horizontally and both ends of the V-shaped limiter 45 are plugged into the pressing rod 46.

[0044] See also Figure 4 、 Figure 5 and Figure 6 The second locking assembly 43 includes a T-shaped rod 431 that is slidably connected to the horizontal section of the support rod 41 up and down. The horizontal section of the T-shaped rod 431 is located above the horizontal section of the support rod 41, and the bottom of the vertical section of the T-shaped rod 431 is fixedly connected to a locking block 432. A sliding groove is provided on the support rod 41 for the locking block 432 to slide up and down. The locking block 432 is slidably installed in the sliding groove and the left and right ends of the locking block 432 protrude to the outside of the sliding groove. The V-shaped limit piece 45 is located below the locking block 432. A return spring 233 is fixedly connected between the top of the locking block 432 and the inner wall of the sliding groove, which is sleeved on the outside of the T-shaped rod 431. A locking groove 434 that is plugged into and cooperated with the locking block 432 is provided at the top of the pressing block 22 and at the front end of the guide groove 42.

[0045] See also Figure 2 、Figure 3 , Figure 4 , Figure 5 and Figure 6 , while the driving mechanism 5 pushes the driving rod 323 forward, the driving mechanism 5 also pushes the support rod 41 forward together. In the initial state, the second reset spring 433 is in a compressed and contracted state, and at this time, the locking block 432 presses on the top of the pressing block 22; before the pressing block 22 is joined with the support seat 21, the support rod 41 and the pressing block 22 move forward synchronously. When the pressing block 22 is joined with the support seat 21 and stops moving forward, the support rod 41 and the driving rod 323 continue to move forward together. At this time, the support rod 41 slides along the guiding groove 42, and the guiding groove 42 is used to guide the support rod 41 to improve the stability of the movement of the support rod 41, which is beneficial for the welding torch to accurately align with the welding part.

[0046] During the forward movement, the V-shaped limiting member 45 always limits the nozzle of the welding torch left and right (as shown in Figure 2 ). When the support rod 41 moves to the front end of the guiding groove 42, it can no longer move forward. At this time, the nozzle of the welding torch just moves above the main shaft. At this time, the V-shaped limiting member 45 is inserted into the pressing rod 46 to form a horizontal triangular structure, and the nozzle of the welding torch is limited within this horizontal triangular structure to ensure that the nozzle of the welding torch continuously and stably aligns with the welding part between the main shaft and the web plate during the subsequent welding process, improving the welding accuracy. It should be noted that when the support rod 41 moves to the front end of the guiding groove 42, the L-shaped ejector rod 31 simultaneously completes the clamping of the web plate.

[0047] When the support rod 41 moves to the front end of the guiding groove 42, the locking block 432 moves to the locking groove 434. At this time, the resilience of the second reset spring 433 is used to push the locking block 432 downward and insert it into the locking groove 434, and the locking block 432 is used to limit the support rod 41 to prevent the relative sliding between the support rod 41 and the pressing block 22, further improving the relative stability between the welding torch and the main shaft and the web plate, and ensuring the welding quality.

[0048] Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 . An unlocking assembly 44 is further installed on the horizontal section of the support rod 41. The unlocking assembly 44 includes a lever 441 rotatably installed on the top of the horizontal section of the support rod 41. An activity groove 442 is provided on the front half section of the lever 441. The horizontal section of the T-shaped rod 431 is movably installed in the activity groove 442. A third reset spring 443 is fixedly connected between the bottom of the rear half section of the lever 441 and the top of the support rod 41. A connecting rod 444 is commonly provided at the rear ends of several levers 441. A pin shaft is hinged on the connecting rod 444, and the pin shaft is slidably connected with the lever 441.

[0049] Please refer to Figures 1 - 7 After welding is completed, an existing driving device (such as an electric push rod) drives the connecting rod 444 to move downward, relative sliding occurs between the connecting block and the lever 441, and the rear end of the lever 441 rotates downward. Subsequently, the front end of the lever 441 drives the T-shaped rod 431 to move upward, and the T-shaped rod 431 drives the locking block 432 to move upward and separate from the locking groove 434, thereby releasing the lock between the pressing block 22 and the support rod 41.

[0050] After that, the driving mechanism 5 drives the support rod 41 to move backward, causing the support rod 41 to drive the welding torch to move backward away from the welding position. At the same time, the driving mechanism 5 drives the driving rod 323 to move backward, and the compression amount of the elastic telescopic rod 23 decreases. Initially, the pressing block 22 remains stationary under the insertion and locking of the insertion rod 331 and the insertion plate 221. Through the meshing transmission of the rack and gear, the threaded sleeve 321 rotates in the reverse direction, thereby driving the threaded rod 322 to move away from the center of the corresponding U-shaped bracket 11. Then, the threaded rod 322 drives the corresponding L-shaped ejector rod 31 to loosen the clamping of the amplitude disc. At the same time, the L-shaped ejector rod 31 drives the wedge block 334 to move away from the center of the corresponding U-shaped bracket 11, causing the wedge block 334 to gradually move away from the bottom of the insertion rod 331. At this time, using the resilience of the first reset spring 333, the insertion rod 331 is pushed downward to release the lock on the insertion plate 221.

[0051] When the support rod 41 moves to the rear end of the guide groove 42, the elastic telescopic rod 23 returns to its natural elongation state. After that, the driving mechanism 5 drives the support rod 41 and the driving rod 323 to continue moving backward. At this time, the support rod 41 and the driving rod 323 will drive the pressing block 22 to move backward, separating the upper and lower arc-shaped grooves, which facilitates the subsequent removal of the welded main shaft and amplitude disc as a whole.

[0052] Please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 7 As shown in FIGS.

[0053] Before welding, the electric push rod 53 is used to push the slider 52 forward. The slider 52 drives the driving rod 323 and the support rod 41 to move forward, so as to realize the mutual locking and limiting of the main shaft, the amplitude disk and the welding torch. After welding, the electric push rod 53 drives the slider 52 to move backward. The slider 52 drives the driving rod 323 and the support rod 41 to move backward, so as to realize the unlocking and resetting of the main shaft, the amplitude disk and the welding torch.

[0054] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0055] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An auxiliary device for threshing cylinder welding, comprising a welding platform and a number of U-shaped brackets equidistantly installed on the left and right of the welding platform, characterized in that, The auxiliary device further includes: A locking mechanism; the locking mechanism includes a support seat fixedly installed at the top of the vertical section of the U-shaped bracket and used for supporting and limiting the main shaft, and a pressing block slidably installed on the support seat before and after and used for pressing and limiting the main shaft; A limiting mechanism; the limiting mechanism includes an L-shaped ejector rod slidably installed on the support seat, and a propulsion assembly and a first locking assembly for pushing the two L-shaped ejector rods on the U-shaped bracket to move towards each other to center and clamp the amplitude disc. The first locking assembly includes a plug rod that slides upward under the push of the L-shaped ejector rod to insert and lock the pressing block on the support seat; A guiding mechanism for guiding the welding torch to align with the weld seam; the guiding mechanism includes a support rod slidably installed before and after on the top of the pressing block, a second locking assembly and a V-shaped limiting member; a hoop for fixing the welding torch is provided on the support rod, and a pressing rod is fixedly installed on the top of the pressing block; When the support rod drives the welding torch to move forward and stops moving, the second locking assembly adaptively locks the support rod on the pressing block. At this time, the welding torch is aligned with the weld seam, and the V-shaped limiting member cooperates with the pressing rod to implement a surrounding limit on the welding torch nozzle; The propulsion assembly includes a threaded sleeve rotatably installed inside the support seat and sleeved with a gear on the outside. A threaded rod is threadedly connected inside the threaded sleeve. The threaded rod is slidably connected to the corresponding support seat left and right. One end of the threaded rod close to the center of the U-shaped bracket slides through to the outside of the support seat and is fixedly connected to the vertical section of the L-shaped ejector rod. A driving rod is slidably installed before and after on the support seat and located below the threaded sleeve. A rack for driving the threaded sleeve to rotate is provided at the top of the driving rod, and the rack meshes with the gear; A baffle is fixedly connected to the plug rod. The plug rod and the baffle are both slidably installed up and down inside the support seat. A first return spring sleeved on the outside of the plug rod is fixedly connected between the top of the baffle and the inner wall of the support seat. A wedge block located below the plug rod is fixedly connected to the top of the horizontal section of the L-shaped ejector rod. A plug plate that is inserted and matched with the support seat and has a through hole is fixedly connected to the front end of the pressing block. The top of the plug rod is inserted and matched with the through hole; An elastic telescopic rod is fixedly connected to the rear side of the pressing block. A push plate is fixedly connected to the rear side of the telescopic section of the elastic telescopic rod. The bottom of the push plate is fixedly connected to the driving rod.

2. The auxiliary equipment for threshing cylinder welding according to claim 1, characterized in that: The support rod is of a V-shaped structure and is vertically arranged with the opening facing forward. The number of hoops on the support rod is two. When the welding torch is fixedly installed between the corresponding two hoops, the welding torch and the support rod form a triangular structure on the vertical plane.

3. The auxiliary equipment for threshing cylinder welding according to claim 2, characterized in that: A guiding groove is opened at the top of the pressing block. The front end of the horizontal section of the support rod is slidably connected to the guiding groove before and after. The V-shaped limiting member is fixedly connected to one side of the horizontal section of the support rod close to the center of the U-shaped bracket. The pressing rod is fixedly installed on the top of the pressing block and located in front of the guiding groove. Both ends of the V-shaped limiting member are inserted and matched with the pressing rod.

4. An auxiliary device for threshing cylinder welding according to claim 2, characterized in that: The second locking component includes a T-shaped rod whose vertical section is slidably connected to the horizontal section of the support rod. The horizontal section of the T-shaped rod is located above the horizontal section of the support rod. A locking block is fixedly connected to the bottom of the vertical section of the T-shaped rod. A sliding groove for the locking block to slide up and down is formed on the support rod. The locking block is slidably installed up and down in the sliding groove, and both the left and right ends of the locking block protrude outside the sliding groove. The V-shaped limiting member is located below the locking block. A second return spring sleeved on the outside of the T-shaped rod is fixedly connected between the top of the locking block and the inner wall of the sliding groove. A locking groove for plugging and cooperating with the locking block is formed at the top of the pressing block and at the front end of the guiding groove.

5. An auxiliary equipment for threshing cylinder welding according to claim 4, characterized in that: An unlocking component is further installed on the horizontal section of the support rod. The unlocking component includes a lever rotatably installed on the top of the horizontal section of the support rod. An activity groove is formed in the front half section of the lever. The horizontal section of the T-shaped rod is movably installed in the activity groove. A third return spring is fixedly connected between the bottom of the rear half section of the lever and the top of the support rod.

6. An auxiliary equipment for threshing cylinder welding according to claim 1, characterized in that: A driving mechanism is installed on the welding platform; the driving mechanism includes guiding slide rails fixedly installed at the rear side of the welding platform and corresponding to the U-shaped brackets one by one. A slider is slidably installed back and forth on the guiding slide rail. An electric push rod for pushing the slider to slide back and forth is fixedly connected to the rear side of the guiding slide rail. The front end of the telescopic section of the electric push rod is fixedly connected to the slider. The rear ends of the driving rod and the support rod are both fixedly connected to the corresponding slider.

7. An auxiliary device for threshing cylinder welding according to claim 1, characterized in that: Arc-shaped grooves adapted to the main shaft are formed on both the support seat and the pressing block, and the upper and lower corresponding arc-shaped grooves cooperate with each other. A plurality of rollers are rotatably installed inside the arc-shaped grooves.

Images