Corn straw pulverizer assembly tool

Abstract

A corn stalk crusher assembly fixture includes a plasma welding head with a plasma nozzle connecting pipe at the bottom. A plasma welding mechanism is located at the bottom of the plasma nozzle connecting pipe, comprising a plasma welding device and an auxiliary cooling device. The plasma welding device is connected to the bottom of the plasma nozzle connecting pipe and performs plasma welding on the corn stalk crusher. An auxiliary cooling device is installed inside the plasma welding device to provide cooling and protection. An auxiliary mechanism connecting platform is located on the side of the plasma nozzle connecting pipe, and a ring laser auxiliary mechanism is located at the end of the auxiliary mechanism connecting platform. The ring laser auxiliary mechanism includes a ring laser auxiliary device and an auxiliary vibration device.

Description

Technical Field

[0001] This invention relates to the field of corn stalk crushers, and more particularly to an assembly fixture for a corn stalk crusher. Background Technology

[0002] Straw crushers are subjected to continuous high-speed rotational impact, material friction, and severe vibration during operation. The weld seams are the weakest points most prone to failure. Traditional plasma welding, due to the large temperature difference in the molten pool, is prone to weld hardening and embrittlement, which can lead to potential hazards such as weld cracking and component detachment with long-term use. An existing patent (publication number: CN103480957A) proposes an assembly fixture for a corn straw crusher. This fixture uses a non-consumable electrode generated by a plasma arc between the electrode and the base material, and a nozzle that sprays plasma gas and protective gas onto the base material. However, this device's "control unit controls the voltage between the non-consumable electrode and the base material." During electrode welding, when facing parts with lower temperatures, the large temperature difference between the molten pool and its surroundings can lead to post-weld hardening, embrittlement, and even cracking, affecting the overall weld quality. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a corn stalk crusher assembly fixture in which a ring laser surrounds the molten pool during plasma welding, thereby assisting in heating the surrounding area, reducing the temperature gradient around the molten pool, preventing excessive temperature differences between the molten pool and its surroundings during welding, which could lead to post-weld hardening, embrittlement, or even cracking, and ensuring welding quality.

[0004] The objective of this invention is achieved through the following technical solution: A corn stalk crusher assembly fixture includes a plasma welding head with a plasma nozzle connecting pipe at the bottom. A plasma welding mechanism is located at the bottom of the plasma nozzle connecting pipe, comprising a plasma welding device and an auxiliary cooling device. The plasma welding device is connected to the bottom of the plasma nozzle connecting pipe and performs plasma welding on the corn stalk crusher. The auxiliary cooling device is internally located to provide cooling protection for the plasma welding device. An auxiliary mechanism connecting platform is located on the side of the plasma nozzle connecting pipe, and a ring laser auxiliary mechanism is located at the end of the auxiliary mechanism connecting platform. The ring laser auxiliary mechanism includes a ring laser auxiliary device and an auxiliary vibration device. The ring laser auxiliary device is connected to the end of the auxiliary mechanism connecting platform. The ring laser auxiliary device generates a ring laser to provide auxiliary heating around the weld joint, reducing the temperature gradient around the weld. The auxiliary vibration device is internally located within the ring laser auxiliary device and drives the laser ring to vibrate left and right to expand the auxiliary heating range.

[0005] The plasma welding device includes a conductive nozzle, a tungsten electrode, an outer protective gas nozzle, an inner plasma gas nozzle, and an inert gas input pipe. The plasma nozzle connecting pipe has an inner gas nozzle connecting groove inside, and a conductive nozzle connecting cylinder is located inside the inner gas nozzle connecting groove. The conductive nozzle is inserted into the conductive nozzle connecting cylinder and fixed, and the tungsten electrode is inserted into the conductive nozzle and fixed.

[0006] On the side opposite to the auxiliary mechanism connection platform, there is a plasma tube connection platform. The plasma gas injection pipe is inserted into the plasma tube connection platform and fixed. The bottom of the inner gas nozzle connection groove is connected to the inner plasma gas nozzle. The bottom of the plasma nozzle connection pipe is connected to the outer protective gas nozzle. The outer protective gas nozzle covers the outside of the inner plasma gas nozzle. The side of the outer protective gas nozzle has an inert gas pipe connection platform. The inert gas input pipe is inserted into the inert gas pipe connection platform and fixed.

[0007] Beneficial effects: 1. The cooling grooves of this invention are arranged in a uniform ring around the central axis of the inner plasma nozzle, which makes the cooling effect on the inner plasma nozzle more uniform during the plasma welding process. This avoids uneven deformation of the inner plasma nozzle due to uneven cooling effect, thereby preventing the uneven deformation of the inner plasma nozzle from affecting the alignment between the inner plasma nozzle and the tungsten electrode, thus ensuring welding accuracy and avoiding uneven arc and energy dispersion.

[0008] 2. In the plasma welding process of this invention, a ring laser surrounds the molten pool to perform auxiliary heating of the molten pool, reduce the temperature gradient around the molten pool, and avoid excessive temperature difference between the molten pool and the surrounding area during the welding process, which may cause post-weld hardening, embrittlement or even cracking, thus ensuring welding quality.

[0009] 3. In the plasma welding process of this invention, the ring laser surrounds the molten pool. The portion of the laser located behind the welding path can slow down the cooling rate of the weld, alleviate the stress concentration generated during weld cooling, and at the same time allow the residual gas inside the weld to have more time to diffuse and escape, further reducing residual stress and further reducing the probability of crack formation.

[0010] 4. The laser ring of this invention can assist in heating the molten pool during the welding process, improve the fluidity of the metal, and thus facilitate metallurgical bonding.

[0011] 5. In this invention, the center of gravity of the connecting body of the focusing lens and the middle lens support stage and the center of gravity of the outer vibration support frame are both located on the central axis of the vibration motor. The connecting body formed by the middle focusing lens and the middle lens support stage has the same mass as the outer vibration support frame, so that the outer vibration support frame vibrates in opposite directions during the vibration of the middle focusing lens and the middle lens support stage. This causes the vibrations of the connecting body formed by the middle focusing lens and the middle lens support stage and the outer vibration support frame to cancel each other out, thereby reducing the impact of the conical lens vibration on plasma welding.

[0012] 6. The ring laser of this application can continuously assist in heating the weld pool, effectively reducing the temperature gradient between the weld pool and the surrounding base material, avoiding cold cracking and embrittlement caused by rapid cooling of the weld; at the same time, it slows down the overall cooling rate of the weld, allowing residual gas in the weld pool to fully escape, eliminating porosity and slag inclusion defects at the source. Actual measurements show that the tensile strength of the weld of the crusher components welded using this tooling is more than 20% higher than that of traditional processes, the metallographic structure is finer and more uniform, and the impact resistance and fatigue resistance are significantly enhanced. The internal surrounding cooling tank adopts a partitioned unidirectional circulation structure, ensuring uniform cooling of the plasma welding torch and internal plasma nozzle, eliminating local deformation of the welding torch, ensuring precise alignment of the tungsten electrode and the nozzle, and enabling stable plasma arc output. The weld width and height are uniform, with no local stress concentration. When the crusher operates continuously for a long time, the weld will not deform or crack due to continuous vibration and alternating loads, significantly improving the overall structural robustness. Furthermore, straw crushers are high-speed agricultural machinery, and welding defects leading to component breakage and slag detachment are major safety hazards. Cracks in the weld can cause high-speed rotating blades and hammers to fly off, and detached slag can mix into the straw material or damage internal components, easily causing equipment damage and personnel injuries. This application utilizes high-strength, high-toughness welds to firmly secure the crushing moving parts. Even when the equipment is running at high speed and encounters impacts from hard debris, components will not break or fly off, protecting the safety of on-site operators. The welds are free of slag inclusions and spatter, preventing slag from falling off and mixing into the straw material. This avoids metal impurities damaging subsequent conveying and processing equipment and also prevents impurities from scratching the internal blades and liners of the crusher, extending the service life of the entire system. High-precision welding ensures accurate installation of core crushing components such as the blades and hammers, resulting in minimal oscillation during operation. This ensures uniform impact and shearing force on the straw, producing consistent particle size after crushing, eliminating issues such as uneven lengths and large residues. This meets the requirements for various subsequent uses, including straw return to the field, feed processing, and biomass fuel production, while also preventing large pieces of straw from clogging the discharge port. Simultaneously, reduced component wear extends the replacement cycle for vulnerable parts such as blades and the frame, further lowering maintenance costs for farmers and cooperatives during equipment use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the assembly fixture structure for a corn stalk crusher according to the present invention.

[0014] Figure 2 This is a front cross-sectional view of the assembly fixture for a corn stalk crusher according to the present invention.

[0015] Figure 3 As described in this invention Figure 2 Enlarged view of a specific area.

[0016] Figure 4 This is a diagram showing the internal structure of the assembly fixture for a corn stalk crusher according to the present invention.

[0017] Figure 5 This is a schematic diagram of the auxiliary cooling device described in this invention.

[0018] Figure 6 This is a schematic diagram of the ring laser-assisted mechanism described in this invention.

[0019] Figure 7 This is a schematic diagram of the auxiliary vibration device described in this invention.

[0020] Figure 8 This is a partial cross-sectional view of the auxiliary vibration device described in this invention.

[0021] Figure 9 This is a schematic diagram of the internal plasma nozzle structure described in this invention.

[0022] Figure 10 This is a schematic diagram of the coolant outflow converging ring structure described in this invention. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments: Example 1: A corn stalk crusher assembly fixture includes a plasma welding head 1. The bottom of the plasma welding head 1 has a plasma nozzle connecting pipe 11. A plasma welding mechanism 2 is installed at the bottom of the plasma nozzle connecting pipe 11. The plasma welding mechanism 2 includes a plasma welding device 201 and an auxiliary cooling device 202. The bottom of the plasma nozzle connecting pipe 11 is connected to the plasma welding device 201. The plasma welding device 201 performs plasma welding operations on the corn stalk crusher. The auxiliary cooling device 202 is installed inside the plasma welding device 201 to cool and protect the plasma welding device 201. The plasma nozzle connecting pipe 11 has an auxiliary mechanism connecting platform 15 on its side. The end of the auxiliary mechanism connecting platform 15 is provided with a ring laser auxiliary mechanism 3. The ring laser auxiliary mechanism 3 includes a ring laser auxiliary device 301 and an auxiliary vibration device 302. The end of the auxiliary mechanism connecting platform 15 is connected to the ring laser auxiliary device 301. The ring laser auxiliary device 301 generates a ring laser to perform auxiliary heating around the weld joint, reducing the temperature gradient around the weld. The ring laser auxiliary device 301 is provided with an auxiliary vibration device 302 inside. The auxiliary vibration device 302 drives the laser ring to vibrate left and right to expand the auxiliary heating range.

[0024] Example 2: The plasma welding apparatus 201 of the present invention includes a conductive nozzle 13, a tungsten electrode 14, an outer protective gas nozzle 16, an inner plasma gas nozzle 17, and an inert gas input pipe 28. The plasma nozzle connecting pipe 11 has an inner gas nozzle connecting groove 55 inside, and a conductive nozzle connecting cylinder 12 inside the inner gas nozzle connecting groove 55. The conductive nozzle 13 is inserted into the conductive nozzle connecting cylinder 12 and fixed. The tungsten electrode 14 is inserted into the conductive nozzle 13 and fixed. On the side opposite to the auxiliary mechanism connecting platform 15, the plasma nozzle connecting pipe 11 has a plasma tube connecting platform 30. The plasma gas injection pipe 31 is inserted into the plasma tube connecting platform 30 and fixed. The bottom of the inner gas nozzle connecting groove 55 is connected to the inner plasma gas nozzle 17. The bottom of the plasma nozzle connecting pipe 11 is connected to the outer protective gas nozzle 16. The outer protective gas nozzle 16 covers the outside of the inner plasma gas nozzle 17. The side of the outer protective gas nozzle 16 has an inert gas pipe connecting platform 29. The inert gas input pipe 28 is inserted into the inert gas pipe connecting platform 29 and fixed.

[0025] Example 3: The auxiliary cooling device 202 of this invention includes a coolant outflow converging ring 22, a coolant inflow converging ring 25, a main coolant outflow pipe 24, and a main coolant inflow pipe 27. The outer protective nozzle 16 housing has a cooling groove 18 inside, with multiple sets of cooling grooves 18 evenly arranged around the central axis of the inner plasma nozzle 17. The cooling groove 18 has a cooling partition plate 19 inside, dividing it into a coolant inflow groove 181 and a coolant outflow groove 182. The coolant inflow groove 181 and the coolant outflow groove 182 are only connected at their bottoms. The inner plasma nozzle 17 has a coolant outflow docking hole 20 on its side and a coolant inflow docking hole 20. The coolant outlet connection hole 20 and coolant inlet connection hole 36 are all evenly arranged around the central axis of the inner plasma nozzle 17. The array of coolant outlet connection holes 20 is located at the bottom of the array of coolant inlet connection holes 36. The coolant outlet connection holes 20 correspond to the coolant outlet groove 182 and are connected to it. The coolant inlet connection holes 36 correspond to the coolant inlet groove 181 and are connected to it. The coolant outlet converging ring 22 surrounds the outside of the array of coolant outlet connection holes 20. The inner side of the coolant outflow connector 22 has a coolant outflow connector 21, the number and position of which correspond to the coolant outflow docking hole 20. The coolant outflow connector 21 is inserted into the coolant outflow docking hole 20. The side of the coolant outflow converging ring 22 is connected to the main coolant outflow pipe 24. The coolant inflow converging ring 25 surrounds the outer side of the coolant inflow docking hole 36 array. The inner side of the coolant inflow converging ring 25 has a coolant inflow connector 35, the number and position of which correspond to the coolant inflow docking hole 36. The coolant inflow connector 35 is inserted into the coolant inflow docking hole 36. The liquid inflow converging ring 25 is connected to the main coolant inflow pipe 27 on its side. The outer protective gas nozzle 16 has an outflow pipe connection hole 23 and an inflow pipe connection hole 26 on its side. The inflow pipe connection hole 26 is located below the inert gas pipe connection platform 29. The main coolant inflow pipe 27 is adapted to the inflow pipe connection hole 26. The main coolant inflow pipe 27 is connected to the inflow pipe connection hole 26. The main coolant inflow pipe 27 passes through the inflow pipe connection hole 26 and is connected to the cooling mechanism. The main coolant outflow pipe 24 is adapted to the outflow pipe connection hole 23. The main coolant outflow pipe 24 passes through the outflow pipe connection hole 23 and is connected to the cooling mechanism.

[0026] It should be noted that the cooling tank 18 is arranged in a uniform ring around the central axis of the inner plasma nozzle 17, ensuring a more uniform cooling effect on the inner plasma nozzle 17 during plasma welding. This prevents uneven cooling from causing localized uneven deformation of the inner plasma nozzle 17, thus avoiding any impact on the alignment between the inner plasma nozzle 17 and the tungsten electrode 14, thereby ensuring welding accuracy and preventing uneven arc and energy dispersion. The cooling tank of this invention is divided into a coolant inflow tank and an outflow tank, with a unidirectional circulation design connected only at the bottom. This design ensures that the coolant always flows in a fixed direction, resulting in a smooth cooling process for the torch head without sudden temperature changes. The stable torch head temperature keeps the plasma arc stable, ensuring no fluctuations in welding current and voltage, and maintaining consistent weld width and height. This significantly improves the aesthetic appearance of the weld, eliminating the need for subsequent manual grinding and finishing, further reducing processing steps and labor costs.

[0027] Example 4: The ring laser-assisted device 301 of the present invention includes a laser-assisted stage 32, a laser transmission fiber 34, an upper lens connecting stage 37, an upper conical lens 38, and a lower lens connecting stage 41. The auxiliary mechanism connecting stage 15 is connected to the side of the laser-assisted stage 32. The bottom of the laser-assisted stage 32 has a bottom laser outlet 43, and the top of the laser-assisted stage 32 has a fiber optic connecting stage 33. One end of the laser transmission fiber 34 is inserted into and fixed inside the fiber optic connecting stage 33, and the other end of the laser transmission fiber 34 is connected to a laser source. The middle of the laser-assisted stage 32 has a vibration mechanism connecting stage 44. The upper lens connecting platform 37 and the lower lens connecting platform 41 are connected inside the platform 32. The upper lens connecting platform 37 is located on the upper part of the vibration mechanism connecting platform 44. The upper conical lens 38 is inserted into the upper lens connecting platform 37 and fixed. The tip of the upper conical lens 38 faces the laser transmission fiber 34. The lower lens connecting platform 41 is located at the bottom of the vibration mechanism connecting platform 44. The lower conical lens 42 is inserted into the lower lens connecting platform 41 and fixed. The tip of the lower conical lens 42 faces the bottom laser outlet 43. The central axes of the lower conical lens 42, the upper conical lens 38, and the fiber optic connecting platform 33 coincide. The continuous auxiliary heating of the ring laser improves the metallographic structure of the weld, enhancing its tensile strength and wear resistance. The continuous, gentle heating of the molten pool and its surroundings by the ring laser results in a finer, more uniform metallographic structure during solidification, avoiding the problems of coarse metallographic structure and grain boundary defects caused by rapid cooling in traditional plasma welding. Simultaneously, the laser-assisted heating ensures more complete metallurgical bonding in the molten pool, significantly increasing the weld density. Tests show that the tensile strength of the welds in corn stalk crusher components welded using this equipment is more than 20% higher than that of traditional plasma welding, and the wear resistance of the weld surface is significantly enhanced. This perfectly adapts to the high-speed operation and material friction scenarios encountered during the corn stalk crusher's operation, greatly improving the structural stability and service life of the finished crusher. This improvement in weld performance exceeds design expectations.

[0028] Example 5: The auxiliary vibration device 302 of the present invention includes a middle lens support platform 39, a middle focusing lens 40, an outer vibration support frame 45, an outer vibration drive roller 49, and an inner vibration drive roller 50. The vibration mechanism connecting platform 44 is adapted to the outer vibration support frame 45 and is connected to the outer vibration support frame 45. The outer vibration support frame 45 slides inside the vibration mechanism connecting platform 44. The outer vibration support frame 45 has an inner lens stage connecting groove 46 inside, which is adapted to the middle lens support platform 39. The middle lens support platform 39 is connected to the inner lens stage. The connecting groove 46, the middle lens support platform 39 slides inside the inner lens stage connecting groove 46, the middle focusing lens 40 is inserted into the middle lens support platform 39 and fixed, the connecting body formed by the middle focusing lens 40 and the middle lens support platform 39 has the same mass as the outer vibration support frame 45, the side of the middle lens support platform 39 has an inner vibration roller docking hole 56, the inner vibration drive roller 50 is rotatably connected to the inner vibration roller docking hole 56, the inner vibration driven ball 54 is inside the inner vibration driven ball 56, the side of the inner vibration drive roller 50 has an inner vibration drive groove 53, the inner vibration drive groove 54... The groove 53 is adapted to the inner vibration driven ball 54. The inner vibration driving groove 53 is connected to the inner vibration driven ball 54, and the inner vibration driven ball 54 slides inside the inner vibration driving groove 53. The outer vibration support frame 45 has an outer vibration roller docking hole 57 on its side. The outer vibration roller docking hole 57 is rotatably connected to the outer vibration driving roller 49. The outer vibration driven ball 52 is located inside the outer vibration roller docking hole 57. The outer vibration driving roller 49 has an outer vibration driving groove 51 on its side. The outer vibration driving groove 51 is adapted to the outer vibration driven ball 52 and is connected to the outer vibration drive roller 49. The driven ball 52 slides inside the external vibration drive groove 51. The external vibration drive groove 51 and the internal vibration drive groove 53 face opposite directions. The vibration mechanism connecting platform 44 has a vibration motor connecting platform 47 on its side. The vibration motor 48 is inserted into the vibration motor connecting platform 47 and fixed. The transmission shaft of the vibration motor 48 is connected to the external vibration drive roller 49 and the internal vibration drive roller 50 in sequence. The center of gravity of the connecting body of the central focusing lens 40 and the central lens support platform 39 and the center of gravity of the external vibration support frame 45 are both on the central axis of the vibration motor 48.

[0029] An operation method for assembling a corn stalk crusher fixture includes the following steps: First, cooling inert protective gas is injected into the outer protective nozzle 16 through the inert gas input pipe 28, causing the cooling inert protective gas to spray out from the bottom of the outer protective nozzle 16. Simultaneously, coolant enters the coolant inflow tank 181 through the main coolant inflow pipe 27, the coolant inflow converging ring 25, and the coolant inflow connecting pipe 35. The coolant flows out through the coolant inflow tank 181, the coolant outflow tank 182, the coolant outflow connecting pipe 21, and the coolant outflow converging ring 22 in sequence, and then flows out through the main coolant outflow pipe 24, ensuring the cooling effect of the inner plasma nozzle 17. Simultaneously, arc-igniting gas is injected into the inner plasma nozzle 17 through the plasma gas injection pipe 31. The arc-igniting power supply connected to the tungsten electrode 14 is activated, and an electric arc is generated between the tungsten electrode 14 and the workpiece to perform plasma welding. In the second step, during plasma welding, the laser beam generated by the laser source passes through the laser transmission fiber 34 and enters the laser auxiliary stage 32. After passing through the upper conical lens 38, the laser beam gradually disperses into a ring laser circle. This dispersed ring then passes through the middle focusing lens 40 and the lower conical lens 42, gradually converging until it falls around the weld point, providing auxiliary heating to the weld joint and reducing the temperature gradient around the weld. Simultaneously, the vibration motor 48 drives the lower conical lens 42 to vibrate continuously, increasing the coverage of the laser circle. The reverse vibration cancellation design of the auxiliary vibration device ensures that the lens remains dynamically balanced during vibration. The laser beam does not shift or defocus due to equipment vibration when passing through the lens, achieving dynamic heating without deviation. Compared to traditional fixed laser-assisted heating equipment, this invention expands the heating range without affecting the focusing accuracy of the laser ring. Even when welding irregular welds or during moving welding processes, the laser can accurately surround the molten pool, avoiding localized underheating or overheating caused by laser deviation, further ensuring consistent welding quality.

[0030] It should be noted that during plasma welding, the ring laser surrounds the molten pool, providing auxiliary heating to the surrounding area. This reduces the temperature gradient around the molten pool, preventing excessive temperature differences between the molten pool and its surroundings that could lead to post-weld hardening, embrittlement, or even cracking, thus ensuring weld quality. The portion of the laser behind the welding path slows down the cooling rate of the weld, alleviating stress concentration during cooling. It also allows more time for residual gases inside the weld to diffuse and escape, further reducing residual stress and the probability of crack formation. The laser ring also assists in heating the molten pool during welding, improving metal fluidity and facilitating metal-metal bonding.

[0031] It should be noted that the center of gravity of the connecting body of the central focusing lens 40 and the central lens support platform 39 and the center of gravity of the external vibration support frame 45 are both located on the central axis of the vibration motor 48. The connecting body formed by the central focusing lens 40 and the central lens support platform 39 has the same mass as the external vibration support frame 45, so that the external vibration support frame 45 vibrates in opposite directions during the vibration of the central focusing lens 40 and the central lens support platform 39. This causes the vibrations of the connecting body formed by the central focusing lens 40 and the central lens support platform 39 and the external vibration support frame 45 to cancel each other out, thereby reducing the impact of the conical lens 42 vibration on plasma welding.

[0032] This invention utilizes a ring laser, which not only reduces the temperature gradient but also improves metal fluidity, allowing the molten pool metal to quickly and uniformly fill the weld. Simultaneously, the laser slows down the weld cooling rate, giving residual gas in the molten pool sufficient time to escape, thus eliminating welding defects such as slag inclusions and porosity at their source. Combined with a cooling device and inert gas protection, the weld is smooth and uniform, requiring no subsequent grinding or repair welding. This achieves one-time welding of corn stalk crusher components without the need for repair welding. Compared to traditional processing methods, the assembly and welding efficiency of a single crusher is increased by more than 40%, significantly shortening the production cycle.

[0033] This corn stalk crusher assembly fixture uses a combination of plasma welding and ring laser technology to solve the core pain points of traditional straw crushers, such as poor welding quality, low structural strength, and insufficient assembly precision, from the manufacturing end. On the one hand, it extends the service life of the equipment, reduces the probability of failure, reduces maintenance costs, and improves the overall quality of the crusher itself. On the other hand, it optimizes the crushing operation effect, ensures continuous production, and enhances the safety of use, fully meeting the needs of large-scale and high-efficiency processing of agricultural straw.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An assembly fixture for a corn stalk crusher, characterized in that: The system includes a plasma welding head (1), a plasma nozzle connecting pipe (11) at the bottom of the plasma welding head (1), a plasma welding mechanism (2) at the bottom of the plasma nozzle connecting pipe (11), a plasma welding device (201) and an auxiliary cooling device (202) are provided in the plasma welding device (201) at the bottom of the plasma nozzle connecting pipe (11), an auxiliary cooling device (202) is provided inside the plasma welding device (201), an auxiliary mechanism connecting platform (15) is provided on the side of the plasma nozzle connecting pipe (11), an annular laser auxiliary mechanism (3) is provided at the end of the auxiliary mechanism connecting platform (15), an annular laser auxiliary mechanism (3) is provided in the annular laser auxiliary device (301) and an auxiliary vibration device (302), an annular laser auxiliary device (301) is connected at the end of the auxiliary mechanism connecting platform (15), the annular laser auxiliary device (301) generates an annular laser to perform auxiliary heating operations around the weld joint, reducing the temperature gradient around the weld, and an auxiliary vibration device (302) is provided inside the annular laser auxiliary device (301).

2. The assembly fixture for a corn stalk crusher according to claim 1, characterized in that: The plasma welding device (201) includes a conductive nozzle (13) and a tungsten electrode (14). The plasma nozzle connecting pipe (11) has an inner gas nozzle connecting groove (55) inside. The inner gas nozzle connecting groove (55) has a conductive nozzle connecting cylinder (12) inside. The conductive nozzle (13) is inserted into the conductive nozzle connecting cylinder (12) and fixed. The tungsten electrode (14) is inserted into the conductive nozzle (13) and fixed.

3. The assembly fixture for a corn stalk crusher according to claim 2, characterized in that: The plasma nozzle connecting pipe (11) has a plasma tube connecting platform (30) on the opposite side of the auxiliary mechanism connecting platform (15). The plasma gas injection pipe (31) is inserted into the plasma tube connecting platform (30) and fixed. The bottom of the inner gas nozzle connecting groove (55) is connected to the inner plasma gas nozzle (17). The bottom of the plasma nozzle connecting pipe (11) is connected to the outer protective gas nozzle (16). The outer protective gas nozzle (16) covers the outside of the inner plasma gas nozzle (17). The side of the outer protective gas nozzle (16) has an inert gas pipe connecting platform (29). The inert gas input pipe (28) is inserted into the inert gas pipe connecting platform (29) and fixed.

4. The assembly fixture for a corn stalk crusher according to claim 1, characterized in that: The auxiliary cooling device (202) includes a coolant outflow docking hole (20), a coolant outflow converging ring (22), a coolant inflow converging ring (25), a main coolant outflow pipe (24), and a main coolant inflow pipe (27). The outer protective nozzle (16) housing has a cooling tank (18). Multiple sets of cooling tanks (18) are evenly arranged around the central axis of the inner plasma nozzle (17). The cooling tank (18) has a cooling partition plate (19) inside. The cooling partition plate (19) divides the cooling tank (18) into a coolant inflow tank (181) and a coolant outflow tank (182). The coolant inflow tank (181) and the coolant outflow tank (182) are connected by a cooling partition plate (182) and a cooling partition plate (183). 182) Only the bottom is connected. The inner plasma nozzle (17) has a coolant outflow docking hole (20) and a coolant inflow docking hole (36) on its side. The coolant outflow docking hole (20) and the coolant inflow docking hole (36) are evenly arranged around the central axis of the inner plasma nozzle (17). The array group of coolant outflow docking holes (20) is located at the bottom of the array group of coolant inflow docking holes (36). The coolant outflow docking hole (20) corresponds to the position of the coolant outflow groove (182). The coolant outflow docking hole (20) is connected to the coolant outflow groove (182). The coolant inflow docking hole (36) corresponds to the position of the coolant inflow groove (181).

5. The assembly fixture for a corn stalk crusher according to claim 4, characterized in that: The coolant inlet docking hole (36) is connected to the coolant inlet groove (181). The coolant outlet converging ring (22) surrounds the outside of the coolant outlet docking hole (20) array. The coolant outlet converging ring (22) has a coolant outlet connecting pipe (21) inside. The number and position of the coolant outlet connecting pipes (21) correspond to the coolant outlet docking holes (20). The coolant outlet connecting pipes (21) are inserted into the coolant outlet docking holes (20). The coolant outlet converging ring (22) is located on the side. The main coolant outlet pipe (24) is connected. The coolant inflow converging ring (25) surrounds the outside of the array of coolant inflow docking holes (36). The coolant inflow converging ring (25) has a coolant inflow connecting pipe (35) inside. The number and position of the coolant inflow connecting pipes (35) correspond to the coolant inflow docking holes (36). The coolant inflow connecting pipes (35) are inserted into the coolant inflow docking holes (36). The side of the coolant inflow converging ring (25) is connected to the main coolant inflow pipe (27).

6. The assembly fixture for a corn stalk crusher according to claim 5, characterized in that: The outer protective gas nozzle (16) has an outflow pipe connection hole (23) and an inflow pipe connection hole (26) on its side. The inflow pipe connection hole (26) is located below the inert gas pipe connection platform (29). The main coolant inflow pipe (27) is adapted to the inflow pipe connection hole (26). The main coolant inflow pipe (27) is connected to the inflow pipe connection hole (26). The main coolant inflow pipe (27) passes through the inflow pipe connection hole (26) and connects to the cooling mechanism. The main coolant outflow pipe (24) is adapted to the outflow pipe connection hole (23). The main coolant outflow pipe (24) is connected to the outflow pipe connection hole (23). The main coolant outflow pipe (24) passes through the outflow pipe connection hole (23) and connects to the cooling mechanism.

7. The assembly fixture for a corn stalk crusher according to claim 1, characterized in that: The ring-shaped laser-assisted device (301) includes a laser-assisted stage (32), a laser transmission fiber (34), an upper lens connecting stage (37), an upper conical lens (38), and a lower lens connecting stage (41). The auxiliary mechanism connecting stage (15) is connected to the side of the laser-assisted stage (32). The bottom of the laser-assisted stage (32) has a bottom laser outlet (43), and the top of the laser-assisted stage (32) has a fiber optic connecting stage (33). One end of the laser transmission fiber (34) is inserted into the fiber optic connecting stage (33) and fixed, and the other end of the laser transmission fiber (34) is connected to a laser source. The middle of the laser-assisted stage (32) has a vibration mechanism connecting stage (44). 32) The upper lens connecting platform (37) and the lower lens connecting platform (41) are internally connected. The upper lens connecting platform (37) is located above the vibration mechanism connecting platform (44). The upper conical lens (38) is inserted into the upper lens connecting platform (37) and fixed. The tip of the upper conical lens (38) faces the laser transmission fiber (34). The lower lens connecting platform (41) is located at the bottom of the vibration mechanism connecting platform (44). The lower conical lens (42) is inserted into the lower lens connecting platform (41) and fixed. The tip of the lower conical lens (42) faces the bottom laser outlet (43). The central axes of the lower conical lens (42), the upper conical lens (38), and the fiber connecting platform (33) coincide.

8. The assembly fixture for a corn stalk crusher according to claim 1, characterized in that: The auxiliary vibration device (302) includes a middle lens support platform (39), a middle focusing lens (40), an outer vibration support frame (45), an outer vibration drive roller (49), and an inner vibration drive roller (50). The vibration mechanism connecting platform (44) is adapted to the outer vibration support frame (45). The vibration mechanism connecting platform (44) is connected to the outer vibration support frame (45). The outer vibration support frame (45) slides inside the vibration mechanism connecting platform (44). The outer vibration support frame (45) has an inner lens stage connecting groove (46) inside. The inner lens stage connecting groove (46) is adapted to the middle lens support platform (39). The middle lens support platform (39) is connected to the inner lens stage connecting groove (46). The middle lens support platform (39) slides inside the inner lens stage connecting groove (46). The middle focusing lens (40) is inserted into the middle lens support platform (39) and fixed. The connecting body formed by the middle focusing lens (40) and the middle lens support platform (39) has the same mass as the outer vibration support frame (45).

9. The assembly fixture for a corn stalk crusher according to claim 8, characterized in that: The inner lens support platform (39) has an inner vibration roller docking hole (56) on its side. The inner vibration drive roller (50) is rotatably connected to the inner vibration roller docking hole (56). The inner vibration driven ball (54) is inside the inner vibration roller docking hole (56). The inner vibration drive roller (50) has an inner vibration drive groove (53) on its side. The inner vibration drive groove (53) is adapted to the inner vibration driven ball (54). The inner vibration drive groove (53) is connected to the inner vibration driven ball (54). The inner vibration driven ball (54) slides inside the inner vibration drive groove (53). The outer vibration support frame (45) has an outer vibration roller docking hole (57) on its side. The outer vibration roller docking hole (57) is rotatably connected to the outer vibration drive roller (49). The outer vibration roller docking hole (57) has an outer vibration driven ball (52) inside it.

10. The assembly fixture for a corn stalk crusher according to claim 9, characterized in that: The outer vibration drive roller (49) has an outer vibration drive groove (51) on its side. The outer vibration drive groove (51) is adapted to the outer vibration driven ball (52). The outer vibration drive groove (51) is connected to the outer vibration driven ball (52). The outer vibration driven ball (52) slides inside the outer vibration drive groove (51). The outer vibration drive groove (51) and the inner vibration drive groove (53) face opposite directions. The vibration mechanism connecting platform (44) has a vibration motor connecting platform (47) on its side. The vibration motor (48) is inserted into the vibration motor connecting platform (47) and fixed. The transmission shaft of the vibration motor (48) is connected to the outer vibration drive roller (49) and the inner vibration drive roller (50) in sequence. The center of gravity of the connecting body of the middle focusing lens (40) and the middle lens support platform (39) and the center of gravity of the outer vibration support frame (45) are both on the central axis of the vibration motor (48).

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