Welding device and method for hydraulic support connecting rod

Abstract

The invention relates to the technical field of hydraulic support welding, in particular to a hydraulic support connecting rod welding device and method.The hydraulic support connecting rod welding device comprises a base and a welding head installed above the base, and a fixing mechanism is arranged at the top end of the base and comprises an installation plate installed at the top end of the base; a mounting frame is rotatably arranged on one side of the mounting plate, fixing plates are mounted on the two sides of the mounting frame, and air cylinders B are mounted on the side walls of the fixing plates. The push rod drives the top plate to move in the direction close to the rib plate and the inner wall of the through hole of the connecting rod, so that the rib plate is precisely aligned with the through hole of the connecting rod, the alignment precision of the rib plate and the connecting rod is ensured, and the welding defects such as uneven welding seams and insufficient welding strength caused by position deviation of the rib plate and the connecting rod are effectively avoided; and the stability and the reliability of the welding quality are improved.

Description

Technical Field

[0001] This invention relates to the field of hydraulic support welding technology, and in particular to a welding device and method for hydraulic support connecting rods. Background Technology

[0002] As a key piece of equipment in fully mechanized coal mining faces, hydraulic supports play a crucial role in supporting, guiding, and transmitting loads through their connecting rod components, directly affecting the overall stability and service life of the hydraulic supports. Currently, the industry generally adopts a production method that combines manual-assisted positioning with automated welding equipment. First, the connecting rod body and accessories such as stiffening plates are initially fixed by clamps, and then the welding head is driven by a robotic arm to complete the welding operation.

[0003] However, the positioning methods of transmission often rely on manual visual inspection or simple mechanical limiters, which makes it difficult to ensure the precise alignment of the stiffener plate and the connecting rod through hole. Assembly errors can easily lead to the workpiece dimensions exceeding tolerances after welding, thereby affecting the assembly accuracy and load-bearing performance of the hydraulic support.

[0004] In view of this, this paper studies and improves upon existing problems, and provides a welding device and method for hydraulic support connecting rods, aiming to solve the problems and improve practical value through this technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to propose a welding device and method for hydraulic support connecting rods.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a welding device for a hydraulic support link, comprising a base and a welding head mounted on the base, wherein a fixing mechanism is provided at the top of the base, the fixing mechanism includes a mounting plate mounted on the top of the base, a mounting bracket is rotatably provided on one side of the mounting plate, fixing plates are mounted on both sides of the mounting bracket, a cylinder B is mounted on the side wall of the fixing plate, and a drive assembly is mounted on the top of the base. One side of the mounting frame is provided with an alignment mechanism. The alignment mechanism includes a hollow tube installed on the side wall of the mounting frame. A sleeve is embedded in the surface of the hollow tube. A push rod slides inside the sleeve. A top plate is installed at the top of the push rod. A spring A is sleeved on the outer wall of the push rod. A circular plate slides inside the hollow tube. A detection mechanism is provided on one side of the mounting frame. The detection mechanism includes a connecting pipe connected to the side wall of the hollow tube. An air cylinder is installed on one side of the mounting frame. A detection plate slides inside the air cylinder. An air supply pipe A is connected between the connecting pipe and the air cylinder. An air bladder is provided inside the connecting pipe. A connecting pipe A is connected between the air cylinder and the air bladder. The outer side of the welding head is equipped with a protective mechanism.

[0007] Preferably, a cylinder A is mounted on the surface of the mounting bracket, a clamp is mounted on the output end of the cylinder A, and a magnet is mounted on the output end of the cylinder B.

[0008] Preferably, the drive assembly includes a linear motor A mounted on the top of the base, a linear motor B mounted on the moving end of the linear motor A, a linear motor C mounted on the moving end of the linear motor B, and a welding head mounted on the moving end of the linear motor C.

[0009] Preferably, a limit rod is installed inside the hollow tube, the circular plate slides on the outer wall of the limit rod, and the hollow tube is filled with hydraulic oil.

[0010] Preferably, the protective mechanism includes protective covers installed on the outer walls of two sets of welding heads, a collection shell installed between the two sets of protective covers, an exchange cylinder provided above the welding head, a connecting pipe B connecting the protective cover and the exchange cylinder, a copper pipe installed inside the protective cover, a collection pipe connecting the copper pipe and the collection shell, an air pump installed at the top of the exchange cylinder, an air supply pipe B connecting the connecting pipe and the exchange cylinder, and a compression assembly for intermittently compressing the connecting pipe B provided inside the collection pipe.

[0011] Preferably, the extrusion assembly includes a rotating shaft that rotates inside the collection tube, the outer wall of the rotating shaft is fitted with blades, one end of the blades that extends through the collection tube is fitted with a cam, and a baffle is installed at the top of the collection shell.

[0012] Preferably, the opening end of the protective cover is arc-shaped, and the copper tube is spiral-shaped.

[0013] Preferably, a filter plate is installed inside the collection shell, and filter holes are formed on the surface of the filter plate, with the diameter of the filter holes gradually decreasing from left to right.

[0014] A welding method for a hydraulic support connecting rod, the welding method comprising the following steps: S1: Place the stiffener on the side of the magnet and use magnetic force for initial positioning; start cylinder A to clamp the connecting rod with the clamping plate and make it stable in the mounting frame; S2: Protective gas is introduced into the hollow tube, pushing the circular plate to squeeze the hydraulic oil. The hydraulic oil pushes the push rod through the sleeve, causing the top plate to move and calibrating the through holes of the stiffener and connecting rod to ensure precise alignment. S3: After the protective gas enters the connecting pipe, it pushes the detection plate to fit the rib plate through the gas supply pipe A; when the rib plate is not bent, the airbag is fully inflated and blocks the connecting pipe; when the rib plate is bent, the airbag is not fully inflated, and gas leakage will occur and need to be adjusted; after the docking is correct, the protective gas enters the protective cover through the gas supply pipe B, the exchange cylinder, etc. and is sprayed out to form convection. S4: Welding is carried out in a protective gas convection environment. After the fumes are blown away, they flow into the collection shell. The gas pump is started to absorb the gas and heat. The heat is used to heat the auxiliary gas in the exchange cylinder through the collection pipe. The gas impacts the blades and drives the cam to squeeze the connecting pipe B, generating a pulse airflow for auxiliary treatment.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, after an external protective gas is introduced into the hollow tube, the internal air pressure of the hollow tube gradually increases. The protective gas pushes the circular plate to move, and the circular plate squeezes the hydraulic oil in the hollow tube, causing the hydraulic oil to enter the inside of the sleeve through the through hole at the bottom of the sleeve. This, in turn, pushes the push rod to move. The push rod drives the top plate to move closer to the inner wall of the through hole of the stiffener and the connecting rod. After the top plate contacts the inner wall of the through hole, it will generate a calibration thrust on the stiffener and the connecting rod, forcing the through holes of the two to be precisely aligned. This ensures the alignment accuracy of the stiffener and the connecting rod, effectively avoiding welding defects caused by deviations in their positions, such as uneven welds and insufficient welding strength, thus improving the stability and reliability of welding quality. 2. This invention utilizes protective gas entering the connecting pipe through a vent, and then flowing into the air cylinder through the gas supply pipe A, increasing the pressure inside the air cylinder. The increased pressure pushes the detection plate towards the surface of the rib plate until the detection plate is in contact with the rib plate. Since the rib plate may be bent at both ends, the gas inside the air cylinder is simultaneously squeezed when the detection plate is in contact with the rib plate. The squeezed gas enters the air bladder through the connecting pipe A, causing the air bladder to expand. If the rib plate is bent, the squeezing force of the detection plate is insufficient, and the air bladder cannot fully expand, leaving a gap inside the connecting pipe. At this time, when the protective gas passes through the connecting pipe, it will spray out from the gap between the air bladder and the inner wall of the connecting pipe. Because the gap is narrow, the airflow will make a sound when it passes through, thus detecting deformation in advance. This can prevent unqualified workpieces from being used for welding, reduce welding errors caused by workpiece deformation, and ensure that the welded bracket meets the design standards. 3. This invention continuously accumulates protective gas inside the connecting pipe. When the pressure reaches a set threshold, the pressure valve inside the gas supply pipe B opens to release pressure. The protective gas then enters the exchange cylinder through the gas supply pipe B, and then enters the protective cover through the connecting pipe B. Finally, it is ejected from the opening at the bottom of the protective cover, preventing the metal in the welding area from reacting with oxygen, nitrogen, etc. at high temperatures, avoiding defects such as porosity and oxide scale, and ensuring the mechanical properties of the welded joint. At the same time, because the openings of the two sets of protective covers are arc-shaped, the ejected protective gas forms convection, and the convective gas rises to the inside of the collection shell for collection. By starting the air pump, a portion of the gas and heat inside the collection shell can be absorbed. By recovering the welding heat and heating the auxiliary gas, the weld seam near the welding area can be preheated during welding. The gas is then transported to the inside of the collection pipe by the air pump. The collection pipe is connected to the waste gas collection box, where the collected gas can be stored. After processing, the protective gas is separated again, thereby reducing the waste of auxiliary gas during continuous welding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a schematic diagram of the fixing mechanism structure of the present invention; Figure 4 This is a schematic diagram of the alignment and detection mechanism of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of section A; Figure 6 This is a schematic diagram of the protective mechanism structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram of section B; Figure 8 This is a schematic diagram of the bottom structure of the collection shell of the present invention.

[0017] Legend: 1. Base; 2. Welding head; 3. Fixing mechanism; 31. Mounting plate; 32. Mounting bracket; 33. Cylinder A; 34. Clamping plate; 35. Fixing plate; 36. Cylinder B; 37. Magnet; 4. Alignment mechanism; 41. Hollow tube; 42. Sleeve; 43. Push rod; 44. Top plate; 45. Spring A; 46. Limiting rod; 47. Circular plate; 5. Detection mechanism; 51. Connecting pipe; 52. Air cylinder; 53. Detection plate; 54. Air supply pipe A; 56. Connecting pipe A; 57. Airbag; 6. Protective mechanism; 61. Protective cover; 62. Collection shell; 63. Exchange cylinder; 64. Collection pipe; 65. Connecting pipe B; 66. Air pump; 67. Copper pipe; 71. Rotating shaft; 72. Blade; 73. Cam; 74. Baffle; 8. Air supply pipe B. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] See Figures 1 to 8 As shown, the present invention provides a welding device for a hydraulic support link, including a base 1 and a welding head 2 installed on the base 1. A fixing mechanism 3 is provided at the top of the base 1. The fixing mechanism 3 includes a mounting plate 31 installed on the top of the base 1. A mounting bracket 32 ​​is rotatably provided on one side of the mounting plate 31. Fixing plates 35 are installed on both sides of the mounting bracket 32. A cylinder B36 is installed on the side wall of the fixing plate 35. A drive assembly is installed on the top of the base 1. One side of the mounting bracket 32 ​​is provided with an alignment mechanism 4. The alignment mechanism 4 includes a hollow tube 41 installed on the side wall of the mounting bracket 32. A sleeve 42 is embedded in the surface of the hollow tube 41. A push rod 43 slides inside the sleeve 42. A top plate 44 is installed at the top of the push rod 43. A spring A45 is sleeved on the outer wall of the push rod 43. A circular plate 47 slides inside the hollow tube 41. It should be noted that when the staff places the stiffener plate on the side of the magnet 37, the magnet 37 will quickly attract the stiffener plate by its own magnetic force, initially fixing the stiffener plate in place and effectively preventing it from sliding randomly in subsequent operations. Then, the cylinder A33 is activated, and its output end drives the clamping plate 34 to move. The clamping plate 34 applies clamping force to the connecting rod, making the connecting rod stable in the mounting bracket 32. This ensures that the connecting rod and stiffener plate remain stable during the welding process, avoiding welding position displacement caused by loose parts. When the external protective gas is injected into the hollow tube 41, the internal pressure of the hollow tube 41 gradually increases. The protective gas pushes the circular plate 47 to move, and the circular plate 47 squeezes the hydraulic oil in the hollow tube 41, causing the hydraulic oil to enter the interior of the sleeve 42 through the through hole at the bottom of the sleeve 42. This, in turn, pushes the push rod 43 to move. The push rod 43 drives the top plate 44 to move closer to the inner wall of the through hole of the stiffener and the connecting rod. After the top plate 44 contacts the inner wall of the through hole, it will generate a calibration thrust on the stiffener and the connecting rod, forcing the through holes of the two to be precisely aligned. This ensures the alignment accuracy of the stiffener and the connecting rod, effectively avoiding welding defects caused by deviations in their positions, such as uneven welds and insufficient welding strength, thus improving the stability and reliability of the welding quality.

[0020] A detection mechanism 5 is provided on one side of the mounting frame 32. The detection mechanism 5 includes a connecting pipe 51 connected to the side wall of the hollow tube 41. An air cylinder 52 is installed on one side of the mounting frame 32. A detection plate 53 slides inside the air cylinder 52. An air supply pipe A54 is connected between the connecting pipe 51 and the air cylinder 52. An air bag 57 is provided inside the connecting pipe 51. A connecting pipe A56 is connected between the air cylinder 52 and the air bag 57. It should be noted that after the circular plate 47 moves a certain distance inside the hollow tube 41, the protective gas enters the connecting pipe 51 through the air hole, and then flows into the air cylinder 52 through the air supply pipe A54, increasing the pressure inside the air cylinder 52. The increased air pressure pushes the detection plate 53 towards the surface of the rib plate until the detection plate 53 is in contact with the surface of the rib plate. Since the rib plate may be bent at both ends, the detection plate 53 will simultaneously compress the gas inside the air cylinder 52 when it is in contact with the rib plate. The compressed gas enters the air bladder 57 through the connecting pipe A56, causing the air bladder 57 to inflate. If the rib plate is not bent, the detection plate... If the pressure of the gas in the air cylinder 52 is sufficient, the air bladder 57 can fully expand and block the inside of the connecting pipe 51. If the rib is bent, the pressure of the detection plate 53 is insufficient, the air bladder 57 cannot fully expand, and a gap will remain inside the connecting pipe 51. At this time, when the protective gas passes through the connecting pipe 51, it will be ejected from the gap between the air bladder 57 and the inner wall of the connecting pipe 51. Because the gap is narrow, the airflow will make a sound when it passes through, thus detecting the deformation in advance and avoiding the use of unqualified workpieces for welding, reducing welding errors caused by workpiece deformation, and ensuring that the welded bracket meets the design standards.

[0021] A protective mechanism 6 is provided on the outside of the welding head 2.

[0022] See Figure 3 As shown, cylinder A33 is mounted on the surface of mounting bracket 32, clamping plate 34 is mounted on the output end of cylinder A33, and magnet 37 is mounted on the output end of cylinder B36.

[0023] See Figure 1As shown, the drive assembly includes a linear motor A mounted on the top of the base 1, a linear motor B mounted on the moving end of the linear motor A, a linear motor C mounted on the moving end of the linear motor B, and a welding head 2 mounted on the moving end of the linear motor C.

[0024] See Figures 3 to 4 As shown, a limit rod 46 is installed inside the hollow tube 41, and a circular plate 47 slides on the outer wall of the limit rod 46. The hollow tube 41 is filled with hydraulic oil.

[0025] See Figures 6 to 7 As shown, the protective mechanism 6 includes a protective cover 61 installed on the outer wall of two sets of welding heads 2, a collection shell 62 installed between the two sets of protective covers 61, an exchange cylinder 63 provided above the welding head 2, a connecting pipe B65 connecting the protective cover 61 and the exchange cylinder 63, a copper pipe 67 installed inside the protective cover 61, a collection pipe 64 connecting the copper pipe 67 and the collection shell 62, an air pump 66 installed at the top of the exchange cylinder 63, an air supply pipe B8 connecting the connecting pipe 51 and the exchange cylinder 63, and a compression assembly for intermittently compressing the connecting pipe B65 provided inside the collection pipe 64.

[0026] See Figure 7 As shown, the extrusion assembly includes a rotating shaft 71 that rotates inside the collection tube 64. A blade 72 is fitted on the outer wall of the rotating shaft 71. A cam 73 is fitted on one end of the blade 72 that extends through the collection tube 64. A baffle 74 is installed on the top of the collection shell 62.

[0027] See Figure 6 As shown, the opening end of the protective cover 61 is arc-shaped, and the copper tube 67 is spiral-shaped.

[0028] It should be noted that after the stiffener and connecting rod are correctly connected, the protective gas inside the connecting pipe 51 continuously accumulates. When the pressure reaches the set threshold, the pressure valve inside the gas supply pipe B8 opens to release the pressure. The protective gas enters the exchange cylinder 63 through the gas supply pipe B8, and then enters the protective cover 61 through the connecting pipe B65. Finally, it is sprayed out from the opening at the bottom of the protective cover 61 to prevent the metal in the welding area from reacting with oxygen, nitrogen and other gases at high temperature, avoid the generation of defects such as pores and oxide scale, and ensure the mechanical properties of the welded joint. Furthermore, since the openings of the two sets of protective covers 61 are arc-shaped, the ejected protective gas forms convection, which can blow away the fumes generated during welding. The convective gas rises to the inside of the collection shell 62 and is collected. By starting the air pump 66, a portion of the gas and heat inside the collection shell 62 can be absorbed. The absorbed heat enters the copper pipe 67 inside the exchange cylinder 63 through the collection pipe 64 and carries the heat into the exchange cylinder 63. At this time, the auxiliary gas transported through the exchange cylinder 63 will be heated, thereby heating the gas discharged from the protective cover 61 to a certain temperature. By recovering the welding heat and heating the auxiliary gas, the weld seam near the welding area can be preheated during welding. The gas is transported to the inside of the collection pipe 64 by the air pump 66. The collection pipe 64 is connected to the waste gas collection box, which can store the collected gas. After processing, the protective gas is separated again, thereby reducing the waste of auxiliary gas during continuous welding. Simultaneously, when the gas passes through the inside of the collecting pipe 64, it impacts the blade 72, which then drives the blade 72 to rotate. This causes the blade 72 to drive the rotating shaft 71 to rotate synchronously, which in turn drives the cam 73 to intermittently squeeze the connecting pipe B65. Under the action of the baffle 74, a pulsed airflow is generated. The periodic pressure fluctuations formed by the pulsed airflow can cause the liquid metal in the molten pool to oscillate regularly, reducing defects such as porosity and slag inclusions, and improving the weld density. The instantaneous high pressure of the pulsed airflow can more effectively peel the slag from the welding area. Combined with the airflow recovery during the intermittent period, the secondary adhesion of slag can be reduced.

[0029] See Figure 8 As shown, a filter plate is installed inside the collection shell 62, and filter holes are opened on the surface of the filter plate. The diameter of the filter holes gradually decreases from left to right.

[0030] A welding method for a hydraulic support connecting rod, the welding method comprising the following steps: S1: Place the stiffener plate on the side of the magnet 37 and use magnetic force for initial positioning; start the cylinder A33 to clamp the connecting rod through the clamping plate 34 and make it stable in the mounting bracket 32; S2: Protective gas is injected into the hollow tube 41, pushing the circular plate 47 to squeeze the hydraulic oil. The hydraulic oil pushes the push rod 43 through the sleeve 42, causing the top plate 44 to move and calibrate the through holes of the rib plate and the connecting rod to ensure precise alignment. S3: After the protective gas enters the connecting pipe 51, it pushes the detection plate 53 to fit the rib plate through the gas supply pipe A54. When the rib plate is not bent, the air bag 57 fully expands and blocks the connecting pipe 51. After the connection is correct, the protective gas enters the protective cover 61 through the gas supply pipe B8 and the exchange cylinder 63 and is ejected to form convection. S4: Welding is carried out in a protective gas convection environment. After the fumes are blown away, they flow into the collection shell 62. The air pump 66 is started to absorb the gas and heat. The heat is used to heat the auxiliary gas in the exchange cylinder 63 through the collection pipe 64. The gas impacts the blades 72, which drive the cam 73 to squeeze the connecting pipe B65, generating a pulse airflow for auxiliary treatment.

[0031] Working principle: When the staff places the stiffener plate on the side of the magnet 37, the magnet 37 will quickly attract the stiffener plate by its own magnetic force, initially achieving the positioning and fixing of the stiffener plate, effectively preventing the stiffener plate from sliding randomly in subsequent operations. Then, the cylinder A33 is started, and its output end drives the clamping plate 34 to move. The clamping plate 34 applies clamping force to the connecting rod, making the connecting rod stable in the mounting frame 32. When the external protective gas is filled into the hollow tube 41, the internal air pressure of the hollow tube 41 gradually increases. The protective gas pushes the circular plate 47 to move. The circular plate 47 squeezes the hydraulic oil in the hollow tube 41, causing the hydraulic oil to enter the sleeve 42 through the through hole at the bottom of the sleeve 42. This pushes the push rod 43 to move. The push rod 43 drives the top plate 44 to move towards the inner wall of the through hole of the stiffener and the connecting rod. After the top plate 44 contacts the inner wall of the through hole, it will generate a calibration thrust on the stiffener and the connecting rod, forcing the through holes of the two to be precisely aligned. After the circular plate 47 moves a certain distance inside the hollow tube 41, the protective gas enters the connecting tube 51 through the air hole, and then flows into the air cylinder 52 through the air supply pipe A54, increasing the pressure inside the air cylinder 52. The increased air pressure pushes the detection plate 53 towards the surface of the rib plate until the detection plate 53 is in contact with the surface of the rib plate. Since the rib plate may be bent at both ends, the detection plate 53 will simultaneously squeeze the gas inside the air cylinder 52 when it is in contact with the rib plate. The squeezed gas enters the air bag 57 through the connecting pipe A56, causing the air bag 57 to expand. If the rib plate is not bent, the squeezing force of the detection plate 53 on the gas inside the air cylinder 52 is sufficient, and the air bag 57 can fully expand and block the inside of the connecting tube 51. If the rib plate is bent, the squeezing force of the detection plate 53 is insufficient, and the air bag 57 cannot fully expand. A gap will remain inside the connecting tube 51. At this time, when the protective gas passes through the connecting tube 51, it will be ejected from the gap between the air bag 57 and the inner wall of the connecting tube 51. Because the gap is narrow, the airflow will make a sound when it passes through. Once the stiffener and connecting rod are properly aligned, the protective gas inside the connecting pipe 51 continuously accumulates. When the pressure reaches the set threshold, the pressure valve inside the gas supply pipe B8 opens to release the pressure. The protective gas enters the exchange cylinder 63 through the gas supply pipe B8, then enters the protective cover 61 through the connecting pipe B65, and finally sprays out from the opening at the bottom of the protective cover 61. Furthermore, since the openings of the two sets of protective covers 61 are arc-shaped, the ejected protective gas forms convection, which can blow away the fumes generated during welding. The convective gas rises into the collection shell 62 and is collected. By starting the air pump 66, a portion of the gas and heat inside the collection shell 62 can be absorbed. The absorbed heat enters the copper tube 67 inside the exchange cylinder 63 through the collection pipe 64 and carries the heat into the exchange cylinder 63. At this time, the auxiliary gas transported through the exchange cylinder 63 will be heated, thereby heating the gas discharged from the protective cover 61 to a certain temperature, thus recovering the welding heat. Meanwhile, when the gas passes through the inside of the collecting pipe 64, it impacts the blade 72, which then drives the blade 72 to rotate. This causes the blade 72 to drive the rotating shaft 71 to rotate synchronously, which in turn drives the cam 73 to intermittently squeeze the connecting pipe B65. Under the action of the baffle 74, a pulsed airflow is generated.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for a hydraulic support link, comprising a base (1) and a welding head (2) mounted above the base (1), characterized in that: The base (1) has a fixing mechanism (3) at its top. The fixing mechanism (3) includes a mounting plate (31) installed at the top of the base (1). A mounting bracket (32) is rotatably provided on one side of the mounting plate (31). Fixing plates (35) are installed on both sides of the mounting bracket (32). A cylinder B (36) is installed on the side wall of the fixing plate (35). A drive assembly is installed above the base (1). The mounting bracket (32) has an alignment mechanism (4) on one side. The alignment mechanism (4) includes a hollow tube (41) installed on the side wall of the mounting bracket (32). A sleeve (42) is embedded in the surface of the hollow tube (41). A push rod (43) slides inside the sleeve (42). A top plate (44) is installed at the top of the push rod (43). A spring A (45) is sleeved on the outer wall of the push rod (43). A circular plate (47) slides inside the hollow tube (41). The mounting bracket (32) has a detection mechanism (5) on one side. The detection mechanism (5) includes a connecting pipe (51) connected to the side wall of the hollow tube (41). An air cylinder (52) is installed on one side of the mounting bracket (32). A detection plate (53) slides inside the air cylinder (52). An air supply pipe A (54) is connected between the connecting pipe (51) and the air cylinder (52). An air bag (57) is provided inside the connecting pipe (51). A connecting pipe A (56) is connected between the air cylinder (52) and the air bag (57). The outer side of the welding head (2) is provided with a protective mechanism (6).

2. The welding device for a hydraulic support connecting rod according to claim 1, characterized in that: The mounting bracket (32) has a cylinder A (33) mounted on its surface. The output end of the cylinder A (33) has a clamp (34) mounted on it, and the output end of the cylinder B (36) has a magnet (37) mounted on it.

3. The welding device for a hydraulic support connecting rod according to claim 1, characterized in that: The drive assembly includes a linear motor A mounted on the top of the base (1), a linear motor B mounted on the moving end of the linear motor A, a linear motor C mounted on the moving end of the linear motor B, and a welding head (2) mounted on the moving end of the linear motor C.

4. The welding device for a hydraulic support connecting rod according to claim 1, characterized in that: The hollow tube (41) is equipped with a limiting rod (46) inside, the circular plate (47) slides on the outer wall of the limiting rod (46), and the hollow tube (41) is filled with hydraulic oil.

5. The welding device for a hydraulic support connecting rod according to claim 1, characterized in that: The protective mechanism (6) includes a protective cover (61) installed on the outer wall of two sets of welding heads (2), a collection shell (62) installed between the two sets of protective covers (61), an exchange cylinder (63) provided above the welding head (2), a connecting pipe B (65) connecting the protective cover (61) and the exchange cylinder (63), a copper pipe (67) installed inside the protective cover (61), a collection pipe (64) connecting the copper pipe (67) and the collection shell (62), an air pump (66) installed at the top of the exchange cylinder (63), an air supply pipe B (8) connecting the connecting pipe (51) and the exchange cylinder (63), and an extrusion assembly for intermittently extruding the connecting pipe B (65) provided inside the collection pipe (64).

6. The welding device for a hydraulic support connecting rod according to claim 5, characterized in that: The extrusion assembly includes a rotating shaft (71) that rotates inside the collection tube (64), with blades (72) sleeved on the outer wall of the rotating shaft (71), and a cam (73) sleeved on one end of the blades (72) that extends through the collection tube (64). A baffle (74) is installed at the top of the collection shell (62).

7. The welding device for a hydraulic support connecting rod according to claim 5, characterized in that: The protective cover (61) has an arc-shaped opening and the copper tube (67) is spiral-shaped.

8. The welding device for a hydraulic support connecting rod according to claim 5, characterized in that: The inside of the collection shell (62) is equipped with a filter plate, and the surface of the filter plate is provided with filter holes, the diameter of which gradually decreases from left to right.

9. A welding method for a hydraulic support connecting rod, applied to the welding apparatus for a hydraulic support connecting rod as described in any one of claims 1-8, characterized in that: The welding method includes the following steps: S1: Place the stiffener on the side of the magnet (37) and use the magnetic force to initially position it; start the cylinder A (33) and clamp the connecting rod through the clamping plate (34) to make it stable in the mounting bracket (32); S2: Protective gas is injected into the hollow tube (41), pushing the circular plate (47) to squeeze the hydraulic oil. The hydraulic oil pushes the push rod (43) through the sleeve (42), causing the top plate (44) to move and calibrate the through holes of the rib plate and the connecting rod to ensure precise alignment. S3: After the protective gas enters the connecting pipe (51), it pushes the detection plate (53) to fit the rib plate through the gas supply pipe A (54). When the rib plate is not bent, the air bag (57) fully expands and blocks the connecting pipe (51). After the connection is correct, the protective gas enters the protective cover (61) through the gas supply pipe B (8) and the exchange cylinder (63) and is sprayed out to form convection. S4: Welding is carried out in a protective gas convection environment. After the flue gas is blown away, it flows into the collection shell (62). The gas pump (66) is started to absorb the gas and heat. The heat is heated by the collection pipe (64) to heat the auxiliary gas in the exchange cylinder (63). The gas impacts the blade (72) and drives the cam (73) to squeeze the connecting pipe B (65), generating a pulse airflow for auxiliary processing.

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