Thresher roller welding auxiliary equipment

Abstract

The invention relates to the technical field of thresher processing, in particular to thresher roller welding auxiliary equipment which comprises a welding platform, a plurality of U-shaped supports, a locking mechanism, a limiting mechanism and a guiding mechanism. Through mutual cooperation of the locking mechanism, the limiting mechanism and the guiding mechanism, multi-point supporting and multi-direction limiting are carried out on the main shaft, centering clamping is carried out on the amplitude disc so as to ensure the relative stability between the amplitude disc and the main shaft, and a welding gun is guided and limited; the welding gun is accurately aligned to the welding position between the main shaft and the amplitude disc and keeps continuous relative stability with the amplitude disc, manual adjustment is not needed, the relative stability among the main shaft, the amplitude disc and the welding gun is automatically improved and kept, the welding precision is improved, and the welding efficiency is also improved.

Description

Technical Field

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

[0002] A thresher is an agricultural machine used to separate grains from straws. It can effectively remove grain particles while minimizing damage to the grains. The thresher drum is one of the core components of the thresher. The common thresher drum is mainly composed of a main shaft, a number of webs and a spike rake. The webs are generally installed on the main shaft by welding, and the spike rake is installed on the webs by bolting. When welding and assembling the existing thresher drum, it is necessary to first sleeve a number of webs on the main shaft at equal distances, and then place the main shaft on the welding frame and connect it to the motor on the welding frame; when welding, use an electric push rod to push the welding gun to align with the welding part between the main shaft and the webs for welding, and 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 width disc 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 width disc. Workers are required to adjust the position of the corresponding welding gun nozzle so that it can be accurately aligned 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 width disc and the main shaft, and the relative position stability between the width disc and the welding gun nozzle need to be improved. When the motor drives the main shaft and the width disc to rotate, the width disc 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, the U-shaped bracket is equipped with a locking mechanism for locking the main shaft and symmetrically distributed on the left and right, 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 clamping block slidably mounted on the support seat and used to clamp and limit the main shaft.

[0006] The limiting mechanism includes L-shaped push rods slidably installed on opposite sides of two support seats corresponding to the same U-shaped bracket. The support seat is also equipped with a propulsion assembly and a locking assembly for pushing the left and right L-shaped push rods to move toward each other to implement centering clamping of the web. The locking assembly includes an insertion rod that slides upward under the push of the L-shaped push rod to insert and lock the clamping block on the support seat.

[0007] The guiding mechanism includes a support rod with a V-shaped structure which is slidably installed on the top of the clamping block, a locking component 2 installed on the front end of the support rod, and a V-shaped limiter. The locking component 2 automatically locks the support rod on the clamping block. The support rod is provided with a clamping hoop for fixing the welding gun. A clamping rod is provided on the top of the clamping block. The V-shaped limiter cooperates with the clamping rod to implement an embracing limit on the welding gun nozzle.

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

[0009] In one possible implementation, the propulsion assembly includes a threaded sleeve that is rotatably installed inside a support seat and has a gear mounted on the outside. The internal thread of the threaded sleeve is connected to a threaded rod, and the threaded rod is slidably connected to the corresponding support seat left and right. The 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 top rod. A driving rod located below the threaded sleeve is slidably installed on the support seat back and forth, and a rack for driving the threaded sleeve to rotate is provided on the top of the driving rod, and the rack is meshed with the gear.

[0010] In one possible implementation, a baffle is fixedly connected to the insertion rod, and the insertion rod and the baffle are both slidably installed up and down inside the support seat, a return spring mounted on the outside of the insertion rod is fixedly connected between the top of the baffle and the inner wall of the support seat, a wedge block located below the insertion rod is fixedly connected to the top of the horizontal section of the L-shaped top rod, and the front end of the clamping block is fixedly connected to a plug plate with a through hole that is plug-fitted with the support seat, and the top of the insertion rod is plug-fitted with the through hole.

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

[0012] In one possible implementation, the support rod is vertically arranged with its opening facing forward, and there are two clamps on the support rod. When the welding gun is fixedly installed between the two corresponding clamps, the welding gun and the support rod form a triangular structure on the vertical plane.

[0013] In one possible implementation, a guide groove is provided on the top of the clamping block, the front end of the horizontal section of the support rod is slidably connected to the guide groove front and back, the V-shaped limiter is fixedly connected to one side of the horizontal section of the support rod close to the center of the U-shaped bracket, the clamping rod is fixedly installed on the top of the clamping block and is located on the front side of the guide groove, and both ends of the V-shaped limiter are plug-fitted with the clamping rod.

[0014] In one possible implementation, the second locking component includes a T-bar with a vertical section that is slidably connected to a horizontal section of a support rod up and down, the horizontal section of the T-bar is located above the horizontal section of the support rod, and a locking block is fixedly connected to the bottom of the vertical section of the T-bar, and a sliding groove is provided on the support rod for the locking block to slide up and down, and the locking block is slidably installed in the sliding groove and the left and right ends of the locking block protrude to the outside of the sliding groove, and a V-shaped limit piece is located below the locking block, and a return spring two that is sleeved on the outside of the T-bar is fixedly connected between the top of the locking block and the inner wall of the sliding groove, and a locking groove that is plug-in compatible with the locking block is provided at the top of the clamping block and at the front end of the guide groove.

[0015] In one possible implementation, an unlocking assembly is also installed on the horizontal section of the support rod, and the unlocking assembly includes a lever rotatably installed on the top of the horizontal section of the support rod, a movable groove is opened in the front half of the lever, and the horizontal section of the T-shaped rod is movably installed in the movable groove, and a reset spring three is fixedly connected between the bottom of the rear half of the lever and the top of the support rod.

[0016] In one possible implementation, the driving mechanism includes a guide rail fixedly mounted on the rear side of the welding platform and corresponding one-to-one to the U-shaped bracket, a slider is mounted on the guide rail for sliding back and forth, an electric push rod is fixedly connected to the rear side of the guide rail for pushing the slider to slide back and forth, the front end of the telescopic section of the electric push rod is fixedly connected to the slider, and the rear ends of the driving rod and the support rod are fixedly connected to the corresponding slider.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention implements multi-point support and multi-directional limitation on the main shaft through the mutual cooperation of the locking mechanism, the limiting mechanism and the guiding mechanism, implements centering clamping on the web to ensure the relative stability between the web and the main shaft, guides and limits the welding gun, so that the welding gun can be accurately aligned with the welding part between the main shaft and the web and maintain continuous relative stability with the web. No manual adjustment is required, and the relative stability among the main shaft, the web and the welding gun can be automatically improved and maintained, thereby improving both the accuracy and efficiency of welding.

[0018] 2. The present invention utilizes L-shaped push rods on the left and right sides of the width disc to clamp and limit the width disc to the left and right sides, thereby improving the accuracy of the width disc position and the stability of the width disc during rotation, making it easier for the subsequent welding gun to accurately align the welding position between the main shaft and the width disc, thereby improving the welding effect.

[0019] 3. In the process of the L-shaped push rod clamping the width disc, the L-shaped push rod and the wedge block cooperate to make the top end of the insertion rod be inserted into the through hole on the insertion plate, 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. In the present invention, on the basis of locking the clamping block and the support seat together, the locking assembly 2 is used 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 restricted in 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 three-dimensional structural schematic diagram of the present invention.

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

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

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

[0027] Figure 7 It is a cross-sectional view of the locking mechanism, the limiting mechanism and the 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 seat; 22, pressing block; 221, plug plate; 23, elastic telescopic rod; 24, push plate; 3, limit mechanism; 31, L-shaped push rod; 32, pushing assembly; 321, threaded sleeve; 322, threaded rod; 323, driving rod; 33, locking assembly 1; 331, plug rod; 332, baffle; 333, reset spring 1; 334, wedge block; 4, guide Guide mechanism; 41. Support rod; 411. Hoop; 42. Guide groove; 43. Locking assembly 2; 431. T-bar; 432. Locking block; 433. Return spring 2; 434. Locking groove; 44. Unlocking assembly; 441. Lever; 442. Movable groove; 443. Return spring 3; 444. Connecting rod; 45. V-shaped limiter; 46. Clamping rod; 5. Driving mechanism; 51. Guide rail; 52. Sliding block; 53. Electric push rod. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] See also Figure 1 and Figure 2 A thresher drum welding auxiliary equipment comprises a welding platform 1 and a plurality of U-shaped brackets 11 equidistantly installed on the welding platform 1, a locking mechanism 2 for locking the main shaft and symmetrically distributed on the left and right is installed on the U-shaped bracket 11, a limiting mechanism 3 for centering the width plate is installed between the left and right locking mechanisms 2, a guiding mechanism 4 for guiding the welding gun to align with the weld is installed on the locking mechanism 2, and a driving mechanism 5 is installed on the welding platform 1.

[0031] See also Figure 1 , Figure 2 and Figure 3 The locking mechanism 2 includes a support seat 21 fixedly mounted on the top of the vertical section of the U-shaped bracket 11 and used to support and limit the main shaft, and a clamping block 22 slidably mounted on the support seat 21 and used to clamp and limit the main shaft.

[0032] See also Figure 1 , Figure 2 , Figure 3 and Figure 7 The support seat 21 and the pressing block 22 are both provided with arc grooves adapted to the main shaft, and the two corresponding arc grooves above and below cooperate with each other, and a plurality of rollers are rotatably installed inside the arc grooves.

[0033] In the initial state, the clamping block 22 slides to the rear side of the support seat 21. Before welding, the main shaft with the width disk is placed in the arc groove on the lower side, and the width disk is located between the two opposite support seats 21 on the left and right of 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 clamping block 22 is driven to slide forward by the driving mechanism 5, so that the two corresponding arc grooves on the upper and lower sides are spliced ​​together to limit and support the main shaft, thereby improving the stability of the main shaft during rotation.

[0034] See also Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 The limiting mechanism 3 includes an L-shaped push rod 31 slidably installed on the opposite sides of the two support seats 21 corresponding to the same U-shaped bracket 11. The support seat 21 is also equipped with a propulsion component 32 and a locking component 33 for pushing the left and right L-shaped push rods 31 to move toward each other to implement centering and clamping of the width plate. The locking component 33 includes an insertion rod 331 that slides upward under the push of the L-shaped push rod 31 to implement plug-in locking of the clamping block 22. A baffle 332 is fixedly connected to the insertion rod 331. The insertion rod 331 and the baffle 332 are both installed to slide up and down. Inside the support seat 21, a return spring 333 sleeved on the outside of the plug rod 331 is fixedly connected between the top of the baffle 332 and the inner wall of the support seat 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 top 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. The front end of the clamping block 22 is fixedly connected to a plug plate 221 with a through hole that is plugged and matched with the support seat 21. The top of the plug rod 331 is plugged and matched with the through hole. It should be noted that a number of balls are rotatably installed on one side of the vertical section of the L-shaped top rod 31 close to the center of the corresponding U-shaped bracket 11. The balls reduce the friction between the L-shaped top rod 31 and the web disk to avoid affecting the rotation of the web disk during welding.

[0035] See also Figure 2 , Figure 4 and Figure 7 The propulsion assembly 32 includes a threaded sleeve 321 rotatably mounted inside the support seat 21 and with a gear mounted on the outside. The internal thread of the threaded sleeve 321 is connected to a threaded rod 322. The threaded rod 322 is slidably connected to the corresponding support seat 21 left and right. The end of the threaded rod 322 close to the center of the U-shaped bracket 11 passes through the outside of the support seat 21 and is fixedly connected to the vertical section of the corresponding L-shaped top rod 31. A driving rod 323 located below the threaded sleeve 321 is slidably mounted on the support seat 21 back and forth. A rack for driving the threaded sleeve 321 to rotate is provided on the top of the driving rod 323, and the rack is meshed with the gear.

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

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 In the initial state, the driving rod 323 is located at the rear side of the support seat 21, and the elastic telescopic rod 23 is in a naturally extended state (such as Figure 7 As shown). Place the main shaft with the web disc in the arc groove at the lower side, and the web disc is located between the two opposite support seats 21 on the left and right of the U-shaped bracket 11, and 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 is pressed on the main shaft. At this time, the rack is located at the rear side of the gear and the two are not engaged. At this time, when the pressing block 22 and the support seat 21 are assembled together, the plug plate 221 is completely inserted into the support seat 21 and the through hole on the plug plate 221 is located directly above the corresponding plug rod 331. At this time, the driving rod 323 just moves forward to the state where the rack and the gear are engaged.

[0038] Afterwards, as the driving mechanism 5 continues to push the driving rod 323 and the push plate 24 to move forward, the elastic telescopic rod 23 will be compressed and contracted, and the driving rod 323 will drive the threaded sleeve 321 to rotate, and then the threaded sleeve 321 drives the threaded rod 322 to move toward the center of the U-shaped bracket 11. The L-shaped push rods 31 located on the left and right sides of the web will move toward the center of the U-shaped bracket 11 under the push of the corresponding threaded rods 322 and clamp the web to the left and right to limit the web, thereby improving the accuracy of the web position and the stability of the web when it rotates, making it easier for the subsequent welding gun to accurately align with the welding part (i.e., the weld) between the main shaft and the web, thereby improving the welding effect.

[0039] When the L-shaped push rod 31 is used to clamp the web, the L-shaped push rod 31 will drive the wedge block 334 to move toward the center of the corresponding U-shaped bracket 11, and use the inclined surface of the wedge block 334 to push the insertion rod 331 upward. At this time, the 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 clamping block 22 and the support seat 21 together, thereby improving the relative stability between the clamping block 22 and the support seat 21, and then improving the firmness of the main shaft limit.

[0040] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 The guiding mechanism 4 includes a supporting rod 41 which is slidably mounted on the top of the clamping block 22 and is used to guide and support the welding gun, a locking assembly 43 which is mounted on the front end of the supporting rod 41 and is used to position the supporting rod 41, and a V-shaped limiting piece 45 and a clamping rod 46 which are used to calibrate and align the nozzle of the welding gun. The supporting 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 its 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 welding gun to the main shaft and the web.

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

[0044] See also Figure 4 , Figure 5 and Figure 6 The locking assembly 43 includes a T-bar 431 that is slidably connected to the horizontal section of the support rod 41 up and down. The horizontal section of the T-bar 431 is located above the horizontal section of the support rod 41. A locking block 432 is fixedly connected to the bottom of the vertical section of the T-bar 431. A sliding groove for the locking block 432 to slide up and down is provided on the support rod 41. The locking block 432 is slidably installed in the sliding groove up and down, and the left and right ends of the locking block 432 protrude to the outside of the sliding groove. The V-shaped limiter 45 is located below the locking block 432. A return spring 433 that is sleeved on the outside of the T-bar 431 is fixedly connected between the top of the locking block 432 and the inner wall of the sliding groove. A locking groove 434 that is plugged and matched 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 When the driving mechanism 5 pushes the driving rod 323 to move forward, the driving mechanism 5 will also push the support rod 41 to move forward together. In the initial state, the return spring 2 433 is in a compressed and contracted state. At this time, the locking block 432 is pressed on the top of the clamping block 22; before the clamping block 22 is assembled with the support seat 21, the support rod 41 moves forward synchronously with the clamping block 22. When the clamping block 22 is assembled with the support seat 21 and no longer moves forward, the support rod 41 continues to move forward together with the driving rod 323. At this time, the support rod 41 will slide along the guide groove 42, and the guide groove 42 is used to guide the support rod 41, thereby improving the stability of the movement of the support rod 41, which is conducive to accurately aligning the welding gun with the welding part.

[0046] In the process of moving forward, the V-shaped stopper 45 always limits the left and right positions of the nozzle of the welding gun (such as Figure 2 As shown in the figure, when the support rod 41 moves to the front end of the guide groove 42, it cannot move forward any further. At this time, the nozzle of the welding gun just moves to the top of the main shaft. At this time, the V-shaped limiter 45 and the clamping rod 46 are plugged together to form a horizontal triangle structure. The nozzle of the welding gun is restricted in the horizontal triangle structure, 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 welding accuracy. It should be noted that when the support rod 41 moves to the front end of the guide groove 42, the L-shaped push rod 31 simultaneously completes the clamping of the web.

[0047] When the support rod 41 moves to the front end of the guide groove 42, the locking block 432 moves to the locking groove 434. At this time, the rebound force of the reset spring 433 is used to push the locking block 432 to move downward and plug it into the locking groove 434. The locking block 432 is used to limit the support rod 41 to prevent the support rod 41 and the clamping block 22 from sliding relative to each other, thereby further improving the relative stability between the welding gun, the main shaft and the width plate, and ensuring the quality of welding.

[0048] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 An unlocking assembly 44 is also 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. A movable groove 442 is provided in the front half of the lever 441. The horizontal section of the T-bar 431 is movably installed in the movable groove 442. A return spring 443 is fixedly connected between the bottom of the rear half of the lever 441 and the top of the support rod 41. A connecting rod 444 is commonly provided at the rear ends of the plurality of levers 441. A pin is hinged on the connecting rod 444, and the pin is slidably connected to the lever 441.

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

[0050] After that, the support rod 41 is driven backward by the driving mechanism 5, so that the support rod 41 drives the welding gun to move backward and leave the welding position, and 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 is reduced. At the beginning, the clamping block 22 remains stationary under the plug-in locking of the plug rod 331 and the plug plate 221, and drives the threaded sleeve 321 to rotate in the opposite direction through the meshing transmission of the rack and the gear, thereby driving the threaded rod 322 to move in the direction away from the center of the corresponding U-shaped bracket 11, and then the threaded rod 322 drives the corresponding L-shaped push rod 31 to loosen the clamping of the width plate, and at the same time, the L-shaped push rod 31 drives the wedge block 334 to move in the direction away from the center of the corresponding U-shaped bracket 11, so that the wedge block 334 gradually moves away from the bottom of the plug rod 331. At this time, the resilience of the reset spring 333 is used to push the plug rod 331 to move downward, so that the plug rod 331 releases the lock on the plug 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 extension state, and then the driving mechanism 5 drives the support rod 41 and the driving rod 323 to continue to move backward. At this time, the support rod 41 and the driving rod 323 will drive the clamping block 22 to move backward, separating the upper and lower arc-shaped grooves, making it convenient to take out the welded main shaft and the web as a whole.

[0052] See also Figure 1 , Figure 2 , Figure 5 and Figure 7 The driving mechanism 5 includes a guide rail 51 fixedly installed on the rear side of the welding platform 1 and corresponding to the U-shaped bracket 11 one by one. A slider 52 is slidably installed on the guide rail 51. An electric push rod 53 is fixedly connected to the rear side of the guide rail 51 to push the slider 52 to slide forward and backward. The front end of the telescopic section of the electric push rod 53 is fixedly connected to the slider 52, and the rear ends of the driving rod 323 and the support rod 41 are fixedly connected to the corresponding slider 52.

[0053] Before welding, the slider 52 is pushed forward by the electric push rod 53, and the slider 52 pushes the driving rod 323 and the support rod 41 forward to achieve mutual locking and limiting of the main shaft, the web and the welding gun. After welding is completed, the slider 52 is driven backward by the electric push rod 53, and the slider 52 drives the driving rod 323 and the support rod 41 to move backward to achieve unlocking and resetting of the main shaft, the web and the welding gun.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A thresher drum welding auxiliary device, comprising a welding platform and a plurality of U-shaped brackets equidistantly installed on the welding platform, characterized in that: The auxiliary equipment also includes: 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 clamping block slidably mounted on the support seat and used to clamp and limit the main shaft; The limiting mechanism includes an L-shaped push rod slidably mounted on the support seat, and a pushing assembly and a locking assembly 1 for pushing the two L-shaped push rods on the U-shaped bracket to move toward each other to implement centering and clamping of the web, wherein the locking assembly 1 includes an inserting rod that slides upward under the push of the L-shaped push rod to insert and lock the clamping block on the support seat; A guiding mechanism for guiding the welding gun to align with the weld; the guiding mechanism comprises a support rod slidably mounted on the top of the clamping block, a second locking assembly and a V-shaped limiter; a clamp for fixing the welding gun is arranged on the support rod, and a clamping rod is arranged on the top of the clamping block; The support rod drives the welding gun forward. When the movement stops, the locking component 2 adaptively locks the support rod on the clamping block. At this time, the welding gun is aimed at the weld, and the V-shaped limiter and the clamping rod cooperate to implement an embracing limit on the welding gun nozzle.

2. The thresher drum welding auxiliary equipment according to claim 1 is characterized in that: The propulsion assembly includes a threaded sleeve which is rotatably installed inside a support seat and has a gear mounted on the outside. The internal thread of the threaded sleeve is connected to a threaded rod, which 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 the outside of the support seat and is fixedly connected to the vertical section of the L-shaped top rod. A driving rod located below the threaded sleeve is slidably installed on the support seat back and forth, and a rack for driving the threaded sleeve to rotate is provided on the top of the driving rod, and the rack is meshed with the gear.

3. The thresher drum welding auxiliary equipment according to claim 1 is characterized in that: A baffle is fixedly connected to the insertion rod, and the insertion rod and the baffle are both slidably installed up and down inside the support seat, a return spring sleeved on the outside of the insertion rod is fixedly connected between the top of the baffle and the inner wall of the support seat, a wedge block located below the insertion rod is fixedly connected to the top of the horizontal section of the L-shaped top rod, and a plug plate with a through hole that is plug-fitted with the support seat is fixedly connected to the front end of the clamping block, and the top of the insertion rod is plug-fitted with the through hole.

4. A thresher drum welding auxiliary device according to claim 3, characterized in that: The rear side of the pressing block is fixedly connected with an elastic telescopic rod, the rear side of the telescopic section of the elastic telescopic rod is fixedly connected with a push plate, and the bottom of the push plate is fixedly connected to the driving rod.

5. The thresher drum welding auxiliary equipment according to claim 1, characterized in that: The support rod is a V-shaped structure and is vertically arranged with the opening facing forward. There are two clamps on the support rod. When the welding gun is fixedly installed between the two corresponding clamps, the welding gun and the support rod form a triangular structure on the vertical plane.

6. A thresher drum welding auxiliary device according to claim 5, characterized in that: A guide groove is provided on the top of the clamping block, and the front end of the horizontal section of the support rod is slidably connected to the guide groove front and back. The V-shaped limiter is fixedly connected to one side of the horizontal section of the support rod close to the center of the U-shaped bracket. The clamping rod is fixedly installed on the top of the clamping block and is located on the front side of the guide groove. Both ends of the V-shaped limiter are plug-fitted with the clamping rod.

7. The thresher drum welding auxiliary equipment according to claim 5, characterized in that: The second locking component includes a T-bar connected to a vertical section and a horizontal section of a support rod for sliding up and down. The horizontal section of the T-bar 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-bar. The support rod is provided with a sliding groove for the locking block to slide up and down. The locking block is slidably installed in the sliding groove and the left and right ends of the locking block protrude to the outside of the sliding groove. The V-shaped limit piece is located below the locking block. A return spring two is fixedly connected between the top of the locking block and the inner wall of the sliding groove and is sleeved on the outside of the T-bar. A locking groove that is plug-in and cooperates with the locking block is provided at the top of the clamping block and at the front end of the guide groove.

8. The thresher drum welding auxiliary equipment according to claim 7, characterized in that: An unlocking assembly is also installed on the horizontal section of the support rod, and the unlocking assembly includes a lever rotatably installed on the top of the horizontal section of the support rod, the front half of the lever is provided with a movable groove, the horizontal section of the T-shaped rod is movably installed in the movable groove, and a reset spring three is fixedly connected between the bottom of the rear half of the lever and the top of the support rod.

9. The thresher drum welding auxiliary equipment according to claim 3, characterized in that: A driving mechanism is installed on the welding platform; the driving mechanism includes a guide rail fixedly installed on the rear side of the welding platform and corresponding to the U-shaped bracket one by one, a slider is installed on the guide rail for sliding back and forth, an electric push rod is fixedly connected to the rear side of the guide rail for pushing the slider to slide back and forth, the front end of the telescopic section of the electric push rod is fixedly connected to the slider, and the rear ends of the driving rod and the support rod are fixedly connected to the corresponding slider.

10. The thresher drum welding auxiliary equipment according to claim 1, characterized in that: The support seat and the pressing block are both provided with arc grooves adapted to the main shaft, and the upper and lower corresponding arc grooves are matched with each other, and a plurality of rollers are rotatably installed inside the arc grooves.

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