Manufacturing method of integral bending type side guard plate of hydraulic support

Abstract

The application provides a manufacturing method of a hydraulic support overall bending type side guard, and specifically comprises the following steps: providing a special steel plate for a side guard; performing primary cutting on the special steel plate for the side guard according to a drawing to obtain two side guard to-be-bent pieces which are spliced together, wherein different cutting parameters are adopted for cutting a bending section and cutting an outer shape contour; respectively performing bending on the side guard to-be-bent pieces along different bending lines to obtain a bent piece, wherein a bending down process of the bent piece is divided into three stages, and each stage corresponds to different bending parameters; cutting the bent piece into two parts; and respectively welding a guide rod seat and a rib plate on each part. The method can avoid cracking of the hydraulic support side guard and improve processing efficiency.

Description

Technical Field

[0001] This invention relates to the field of hydraulic supports, and more specifically, to a method for manufacturing an integrally bent side guard plate for a hydraulic support. Background Technology

[0002] Hydraulic supports are a primary piece of equipment in coal mining, mainly responsible for mine shaft support. Side guard plates are a key component of hydraulic supports, primarily used to eliminate gaps between the top beams of adjacent supports and the shield beams, preventing rockfall from entering the support space. As guide plates during support relocation, they act as guides, preventing the supports from tipping over after lowering, and adjusting the distance between adjacent supports. Existing side guard plates are characterized by large component sizes and high bending requirements. Their specific structure consists of welded components such as side guard plates, top plates, guide rod seats, and stiffening plates. The side guard plates and top plates are the main components, typically made of Q460 steel plates with thicknesses of 16mm, 20mm, or 25mm. However, bending often results in cracking, poor precision, and low bending efficiency. Furthermore, preheating with a flame before bending the side guard plates reduces the probability of cracking, but this increases production costs and affects production efficiency. Meanwhile, the existing material utilization rate of the cutting and unloading method is low, the overall cutting speed is relatively fast, resulting in poor surface roughness, severe grooves, stress concentration at the bending edge, and easy cracking at the end of the side guard plate, which leads to low processing accuracy.

[0003] Patent application CN115945831A discloses a welding method for a hydraulic support side guard plate. The side guard plate is vertically positioned, and the top plate is horizontally positioned, with an angle greater than 90 degrees between them. The welding sequence is optimized, with welding proceeding sequentially from the first weld pass to the eighth weld pass. The first weld pass is the weld between the side guard plate and the inner side of the top plate. The second weld pass is the weld between the side guard plate and the outer side of the top plate. The outer side of the second weld pass, from the side guard plate to the top plate, consists of the third, fourth, and fifth weld passes. The outer side of the first weld pass, from the side guard plate to the top plate, consists of the sixth, seventh, and eighth weld passes. This welding method for the hydraulic support side guard plate ensures the perpendicularity of the side guard plate to the top plate through reverse deformation and guarantees welding continuity through optimized welding sequence, thereby improving welding quality, welding efficiency, and reducing costs. However, the welding method for the hydraulic support side guard plate only improved the welding steps and did not optimize the bending steps of the integral bending side guard plate of the hydraulic support. When applied to the processing of hydraulic support side guard plates, cracking and low processing efficiency will occur. Summary of the Invention

[0004] To avoid cracking of the hydraulic support side guard plate and improve processing efficiency, the technical solution adopted in this invention is: a method for manufacturing an integrally bent side guard plate for a hydraulic support, comprising the following steps:

[0005] The steel plate provided is a special steel plate for side guards. The chemical composition of this special steel plate, by mass percentage, mainly includes: C 0.06%~0.10%, Si 0.20%~0.60%, Mn 1.20%~1.60%, Nb 0.03%~0.05%, Als 0.015%~0.025%, Ceq≦0.45%, P≦0.020%, S≦0.010%, V≦0.12%, Ti≦0.06%, B≦0.0008%, and the balance Fe;

[0006] The side guard plate is cut into the drawing using a laser cutting machine to obtain the side guard plate to be bent. During laser cutting, two pieces are combined into one piece and the long side of the non-bending side that overlaps is not cut. When cutting the bending section, two different cutting parameters are used for cutting the outer contour.

[0007] The side guard plate to be bent is bent twice to obtain the bent part. The bending and pressing process is divided into three stages, each stage corresponding to different bending parameters.

[0008] The secondary cutting process involves cutting the bent part into two components along the cutting line on the non-bending side.

[0009] The assembly process involves welding the guide rod seat and stiffening plate onto the bent part after secondary cutting.

[0010] Based on the above, in the step of providing steel plates, the special steel plates for side guard plates are obtained by smelting in a converter, ladle refining, vacuum degassing, protective continuous casting, rough rolling, finish rolling, and water-controlled cooling at 800℃~500℃.

[0011] Based on the above, in the material cutting step, the shape of the side guard plate to be bent is rectangular, the center of the side guard plate to be bent is the non-bent side long side that is spliced ​​together and is to be cut a second time, the adjacent straight segments within the non-bent side long side are connected by an R100 mm arc transition, and the two ends of the long side perpendicular to the side side are connected by an R50 mm arc transition.

[0012] The side guard plate to be bent has bending lines on both sides, and there is a notch at each bending line. The inside of the notch is a 180° arc with a radius of 25 mm. The center of the arc is 20 mm away from the end face. There is a rounded corner with a radius of 20 mm between the notch and the end face.

[0013] Based on the above, in the material feeding step, the cutting parameters for the bending section are: laser power 10 kW, cutting speed 0.8 m / min, laser focal length +10 mm, cutting gas is oxygen, gas pressure 0.5 bar, and cutting height 0.3 mm.

[0014] The parameters for contour cutting are: laser power 12 kW, cutting speed 1.2 m / min, laser focal length +15 mm, cutting gas is oxygen, gas pressure 0.45 bar, and cutting height 0.5 mm.

[0015] Based on the above, before the bending step, a step of straightening the side guard plate to be bent is also included.

[0016] Based on the above, in the bending step, an automatic bending workstation is used to perform two bends on the side guard plate to be bent. After one long side is bent and formed, the position of the side guard plate to be bent is reversed, and the other long side is bent. Both bending and pressing processes are divided into three stages; wherein...

[0017] The parameters for the first stage of bending and pressing are: pressing speed 3.2 mm / s, bending angle 70°, and preset springback amount 0 mm;

[0018] The parameters for the two-stage bending and pressing are: pressing speed 1.6 mm / s, bending angle 80°, and preset springback amount 0 mm.

[0019] The parameters for the three stages of bending and pressing are: pressing speed 0.8 mm / s, bending angle 90°, and preset springback amount 2 mm.

[0020] Based on the above, the blanking step includes: during laser blanking and cutting, two parts are combined into one, with the long sides of the two non-bending sides touching each other. During cutting, the long sides of the non-bending sides of the two parts that overlap are not cut. Two different cutting parameters are used for cutting the bending section and the outer contour. The starting point is located on the extension line of the right angle at the top of the part. When cutting the outer contour at the bending point using the bending section cutting parameters, the cutting parameters are changed to the outer contour cutting parameters. When cutting to another bending section, the cutting parameters are changed back to the bending section cutting parameters. This process is repeated until the entire part is cut.

[0021] Based on the above, the assembly steps specifically include: marking the position lines of parts such as guide rod seats and stiffeners on the bent parts after secondary cutting; placing the guide rod seats and stiffeners on the bent parts after secondary cutting; adjusting the position of each part; marking the positioning welding positions and performing positioning welding to ensure that the assembly gap is less than 1mm; and then using a welding robot to perform root welding, filling welding, and cover welding on the weld seam after positioning welding.

[0022] This invention has substantial features and advancements compared to existing technologies. Specifically, the method for manufacturing an integrally bent side guard plate for hydraulic supports provided by this invention uses a Q460 grade special steel plate with low carbon and low manganese content and Nb composition. The carbon equivalent is controlled to be less than or equal to 0.45% and the carbon content is less than or equal to 0.10%. Various elements that increase the plasticity of the steel plate are added, and a special steel smelting and rolling process is used to solve the problem of surface cracking when the side guard plate is bent.

[0023] Meanwhile, the side guard plate arrangement method was optimized during material cutting, combining two parts into one. This reduces the need for one non-bending long side cut between each pair of parts, thus shortening the cutting time and improving material cutting efficiency.

[0024] Furthermore, by optimizing the cutting process parameters, stress concentration at the bending ends was avoided, thus solving the problem of cracking at the bending ends of the side guard plate. Specifically, regarding cutting parameters, dedicated cutting parameters for cutting irregular notches were developed. Compared to the parameters for cutting the overall outline, the laser power was reduced from 12kW to 10kW, the cutting speed was reduced from 1.2m / min to 0.8m / min, the laser focal length was changed from +15mm to +10mm, the gas pressure was increased from 0.45bar to 0.5bar, and the cutting height was reduced from 0.5mm to 0.3mm, thereby improving the flatness of the cut surface and avoiding stress concentration.

[0025] Furthermore, the manufacturing method of the integral bending side guard plate of the hydraulic support can eliminate the flame preheating process before bending due to the improved plasticity of the side guard plate and the reduction of stress concentration at the bending point. Even in a low-temperature environment without preheating, the bending will not crack.

[0026] Furthermore, the manufacturing method of the hydraulic support integral bending side guard plate optimizes the bending process into a three-stage pressing process with pressing speeds of 3.2mm / s, 1.6mm / s, and 0.8mm / s respectively. At the same time, two bends can be performed in one bending process cycle, reducing the bending process time from 300s to 200s, improving efficiency by more than 50%, thereby improving the production efficiency of the side guard bending process.

[0027] Therefore, the method for manufacturing an integrally bent side guard plate of a hydraulic support provided by the present invention can avoid cracking of the side guard plate of the hydraulic support and improve processing efficiency. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the blanking structure of the side guard plate to be bent in the method for manufacturing an integral bending side guard plate of a hydraulic support provided by the present invention.

[0029] Figure 2 This is a schematic diagram of the bending process in the manufacturing method of the integral bending side guard plate of the hydraulic support provided by the present invention.

[0030] Figure 3 This is a schematic diagram of the secondary bending working state in the manufacturing method of the integral bending side guard plate of the hydraulic support provided by the present invention.

[0031] Figure 4 This is a schematic diagram of the finished structure of the hydraulic support integral bending side guard plate obtained by the manufacturing method of the hydraulic support integral bending side guard plate provided by the present invention.

[0032] Figure 5 This is a schematic diagram of the cross-sectional structure of the hydraulic support integral bending side guard plate obtained by the manufacturing method of the hydraulic support integral bending side guard plate provided by the present invention.

[0033] Figure 6 The appearance of the hydraulic support integral bending side guard plate is obtained by the manufacturing method of the hydraulic support integral bending side guard plate provided by the present invention.

[0034] Figure 7 This is the appearance of the hydraulic support side guard plate obtained in Comparative Example 1.

[0035] In the diagram: 1. Side of the side guard plate to be bent; 2. Bending line; 3. Guide rod seat mounting hole; 4. Notch; 5. Side guard plate to be bent; 6. Long side of the non-bending side; 7. Starting point; 8. Upper punch; 9. First fold; 10. Lower die; 11. Second fold; 12. Guide rod seat; 13. Long side; 14. Rib plate; 15. Short side. Detailed Implementation

[0036] The technical solution of the present invention will be further described in detail below through specific embodiments.

[0037] Example 1

[0038] This embodiment provides a method for manufacturing an integrally bent side guard plate for a hydraulic support, specifically including the following steps:

[0039] Step 1: Providing a steel plate: A special steel plate for side guards is provided. The chemical composition of this special steel plate, by mass percentage, mainly includes: C 0.06%~0.10%, Si 0.20%~0.60%, Mn 1.20%~1.60%, Nb 0.03%~0.05%, Als 0.015%~0.025%, Ceq≦0.45%, P≦0.020%, S≦0.010%, V≦0.12%, Ti≦0.06%, B≦0.0008%, and the balance Fe;

[0040] Step 2: Material preparation: Use a laser cutting machine to cut the special steel plate for the side guard plate in one go according to the drawing. After the first cut is completed, transfer the part to the grinding station and manually grind off the oxide scale and slag on the surface of the part.

[0041] In the laser cutting of the side guard plate, two parts are combined into one during a single cut, with the two non-bent side long edges 6 tightly pressed together without gaps. Furthermore, the overlapping non-bent side long edges 6 of the two parts are not cut during the cutting process. The portion extending 50 mm outward from each end face of each side guard plate part along the bending line is defined as the bending section. Two different cutting parameters are used for cutting the bending sections and the remaining outer contour.

[0042] Specifically, such as Figure 1 , Figure 4 and Figure 5 As shown, in the blanking step, the side guard plate to be bent 5 is rectangular in shape. The center of the side guard plate to be bent 5 is the non-bent side long side 6 that is spliced ​​together and will be cut a second time. The non-bent side long side 6 is composed of three straight lines spliced ​​together, and the adjacent straight line segments are transitioned by an R100 mm arc. The two ends of the non-bent side long side 6 are perpendicular to the side edge 1 of the side guard plate to be bent 1 and are transitioned by an R50 mm arc.

[0043] The side guard plate to be bent 5 has bending lines 2 on both sides, and a notch 4 at each bending line 2. The notch 4 has a 180° arc with a radius of 25 mm inside. The center of the arc is 20 mm from the end face, and there is a rounded corner with a radius of 20 mm between the notch 4 and the end face. The starting point 7 is located on the extension line of the right angle at the upper end of the part. Guide rod seat mounting holes 3 are provided on both sides of the side guard plate to be bent 5.

[0044] like Figure 5 As shown, the inner arc bending radius of the side panel is R20 mm, and the bending angle is 90°.

[0045] When cutting the shape of the bend using the bending segment cutting parameters, the cutting parameters are automatically changed to the outline cutting parameters. When cutting to another bending segment, the cutting parameters are automatically changed back to the bending segment cutting parameters. This process is repeated until the entire part is cut.

[0046] The cutting parameters for the bending section are as follows: laser power 10 kW, cutting speed 0.8 m / min, laser focal length +10 mm, cutting gas is oxygen, gas pressure 0.5 bar, and cutting height 0.3 mm.

[0047] Other parameters for the outer contour cutting: laser power 12 kW, cutting speed 1.2 m / min, laser focal length +15 mm, cutting gas is oxygen, gas pressure 0.45 bar, cutting height 0.5 mm.

[0048] Specifically, the guide rod seat mounting hole 3 and the side edge 1 of the side guard plate to be bent are laser-cut using the outline cutting parameters. The notch 4 is cut using the bending section cutting parameters.

[0049] Step 3, bending:

[0050] like Figure 2 and Figure 3 As shown, the side guard plate is bent twice using an automatic bending workstation. The side guard plate to be bent is placed on the loading station of the bending worktable. The upper punch 8 with a diameter of 40 mm is manually replaced, and the opening size of the lower die 10 is adjusted to 130 mm. The automatic bending program is then programmed. The bending and pressing process is divided into three stages, each corresponding to different bending parameters. After the program is completed, automatic bending is performed.

[0051] The side guard plate parts are transferred to the loading position of the bending machine by the handling robot. The upper punch 8 descends to bend the part. After one long side is bent, the first fold 9 is formed. The handling robot adjusts the position of the side guard plate and performs the bending process on the other long side to form the second fold 11. After both ends are bent to 90° and pass the inspection, the handling robot unloads the part to obtain the bent part.

[0052] Step 4: Secondary cutting: Place the bent workpiece on the cutting platform and cut the side guard plate into two parts according to the cutting line on the non-bent side of the long side of the two guard plates. Use a grinding wheel to grind the parts with welds on each part to expose the metal luster, forming two parts composed of a long side 13 and a short side 15 bent at ninety degrees. The cutting equipment is a plasma or laser cutting robot.

[0053] Step 5 Assembly: Weld the guide rod seat and stiffener plate onto the bent part after secondary cutting.

[0054] Example 2

[0055] This embodiment provides a method for manufacturing an integrally bent side guard plate for a hydraulic support. The main difference from Embodiment 1 is that, in this embodiment, before the bending step, a step of leveling the side guard plate to be bent is included. Specifically, after the parts are cut and prepared, they are transferred to the leveling station, where a flatbed machine is used to level the side guard plate parts. Once the flatness meets the requirements, they are transferred to the automatic bending workstation.

[0056] Example 3

[0057] This embodiment provides a method for manufacturing an integral bending side guard plate for a hydraulic support. The main difference from Embodiment 1 is that in this embodiment, the bending and pressing process of the bending step is divided into three stages, specifically including the following parameters for the first stage of bending and pressing: pressing speed 3.2 mm / s, bending angle 70°, and preset springback amount 0 mm.

[0058] The parameters for the two-stage bending and pressing are: pressing speed 1.6 mm / s, bending angle 80°, and preset springback amount 0 mm.

[0059] The three-stage bending and pressing parameters are: pressing speed 0.8 mm / s, bending angle 90°, and preset springback amount 2 mm.

[0060] Example 4

[0061] This embodiment provides a method for manufacturing an integral bending side guard plate for a hydraulic support. The main difference from Embodiment 1 is that, in this embodiment, the assembly step further includes marking the position lines of parts such as the guide rod seat 12 and the stiffener plate 14 on the side guard plate, placing the guide rod seat 12, the stiffener plate 14 and other parts on the side guard plate, adjusting the position of each part, marking the locating welding position, and using ER50-6 φ1.4mm welding wire to manually perform locating welding to ensure that the assembly gap is less than 1 mm.

[0062] The side guard plate is placed on a robotic welding platform, and the welding robot sequentially performs root pass, fill pass, and cap pass welding on the side guard plate. The welding uses a mixed gas shielded by Ar and 20% CO2, with ER62-G solid wire with a diameter of φ1.4 mm. After welding, the weld bead and the surrounding 20mm area are ground to remove oxide scale and spatter. It is best to paint the push rod according to the process requirements.

[0063] Comparative Example 1

[0064] To compare with existing methods for manufacturing bending side guard plates of hydraulic supports, this comparative example provides a manufacturing method described in the background art, with specific materials and steps as follows:

[0065] Step (1) Material preparation:

[0066] The raw material is Q460 grade steel plate with a carbon content of 0.18% according to national standards. Each part of the side guard plate is cut into individual pieces using a laser cutting machine. The cutting gas is oxygen, the laser power is 12 kW, and the cutting speed is 1.2 m / min. After cutting, the parts are transferred to the grinding station, where the oxide scale and slag on the surface of the parts are manually ground.

[0067] Step (2) Leveling:

[0068] The side plate parts are leveled using a flatbed machine. Once the flatness meets the requirements, they are transferred to a preheating worktable.

[0069] Step (3) Preheating:

[0070] Use a flame gun to preheat the bent area and a 100 mm area on both sides to a preheating temperature of 150°C.

[0071] Step (4) Bending:

[0072] The side plate is bent using an automatic bending workstation. The side plate is placed on the bending worktable, and the special bending head for the side plate is manually replaced. The lower tire width and bending speed are set according to the process, with a bending speed of 0.8 mm / s. The bending is completed in one step. After passing the inspection, the welded areas on each part are ground with a grinding wheel to reveal the metallic luster.

[0073] Step (5) Assembly:

[0074] Draw position lines for parts such as guide rod seats and stiffeners on the side plate, place the guide rod seats and stiffeners on the side guard, adjust the position of each part, and use ER50-6 welding wire to perform single-layer single-pass manual positioning welding at the process requirement position.

[0075] Step (6) Welding:

[0076] The side guard plate is fixed on the welding platform, and the robot is used to perform filling and cover welding in sequence. After welding, the weld and the oxide scale and spatter within a 20 mm range around it are ground.

[0077] Step (7) Painting: Paint the side panels according to the process requirements.

[0078] Detection:

[0079] The hydraulic support side guard plate obtained in Comparative Example 1 and the integral bent side guard plate of the hydraulic support obtained in this case were tested respectively. The test results are detailed in [link to test results]. Figure 6 and Figure 7 As shown. Among them, Figure 6 The image shows the appearance of the bent section of the integral bent side guard plate of the hydraulic support obtained by the manufacturing method provided by the present invention. Figure 7 The appearance of the bending section of the hydraulic support side guard plate obtained by the manufacturing method provided in Comparative Example 1 is shown.

[0080] from Figure 6 It can be clearly seen that the hydraulic support integral bending side guard plate obtained by the manufacturing method provided in this case has a relatively smooth, continuous bending part without cracks, and a high yield.

[0081] And from Figure 7 It can be clearly seen that the hydraulic support side guard plate made from Comparative Example 1 showed obvious cracks and fractures at the bending part during the bending process, resulting in a low yield.

[0082] Meanwhile, by comparing the manufacturing time of the method provided in this case with that of the manufacturing method provided in Comparative Example 1, it can be clearly seen that the manufacturing method in this case can form two hydraulic support integral bending side guard plates at one time, which takes less time and has higher work efficiency.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A method for manufacturing an integrally bent side guard plate for a hydraulic support, comprising the following steps: The steel plate provided is a special steel plate for side guards. The chemical composition of the special steel plate for side guards, by mass percentage, includes: C 0.06%~0.10%, Si 0.20%~0.60%, Mn 1.20%~1.60%, Nb 0.03%~0.05%, Als 0.015%~0.025%, Ceq≦0.45%, P≦0.020%, S≦0.010%, V≦0.12%, Ti≦0.06%, B≦0.0008%, and the balance Fe; The side guard plate is initially cut according to the drawings to obtain two side guard plates to be bent together. The cutting and bending section and the cutting outline are cut with different cutting parameters. The side guard plate to be bent is bent along different bending lines to obtain a bent part. The bending and pressing process is divided into three stages, each stage corresponding to different bending parameters. The secondary cutting process divides the bent part into two components. The guide rod seat and stiffening plate are welded onto each part during assembly. The material feeding step specifically includes: When performing the initial laser cutting of the special steel plate for the side guard plate according to the drawings, the long sides of the two non-bending sides are attached together, and the long sides of the non-bending sides of the two parts that overlap are not cut during the cutting process. Two different cutting parameters are used for cutting the bending section and the outer contour. The starting point is located on the extension line of the right angle at the top of the part. When cutting the shape near the bending point using the bending section cutting parameters, the cutting parameters are changed to the outer contour cutting parameters. When cutting to another bending section, the cutting parameters are changed back to the bending section cutting parameters. This cycle is repeated until the cutting is completed. The bending section cutting parameters are: laser power 10 kW, cutting speed 0.8 m / min, laser focal length +10 mm, cutting gas is oxygen, gas pressure 0.5 bar, and cutting height 0.3 mm. The parameters for contour cutting are: laser power 12 kW, cutting speed 1.2 m / min, laser focal length +15 mm, cutting gas is oxygen, gas pressure 0.45 bar, and cutting height 0.5 mm. In the bending step, an automatic bending workstation is used to bend the side guard plate twice. After one side is bent and formed, the position of the side guard plate is reversed, and the other side is bent. Both bending and pressing processes are divided into three stages. The parameters for the first stage of bending and pressing are: pressing speed 3.2 mm / s, bending angle 70°, and preset springback amount 0 mm; The parameters for the two-stage bending and pressing are: pressing speed 1.6 mm / s, bending angle 80°, and preset springback amount 0 mm. The parameters for the three stages of bending and pressing are: pressing speed 0.8 mm / s, bending angle 90°, and preset springback amount 2 mm.

2. The hydraulic support overall bending type side shield plate manufacturing method according to claim 1, characterized by: In the step of providing steel plates, the special steel plates for side guard plates are obtained by smelting in a converter, ladle refining, vacuum degassing, protective continuous casting, rough rolling, finish rolling, and controlled cooling by water pouring at 800℃~500℃.

3. The hydraulic support integral bending type side shield manufacturing method according to claim 1 or 2, characterized by: In the drawing of the material cutting step, the shape of the side guard plate to be bent is rectangular, the center of the side guard plate to be bent is the non-bent side long side spliced ​​together, the adjacent straight segments within the non-bent side long side are connected by an R100 mm arc transition, and the two ends of the non-bent side long side perpendicular to the side are connected by an R50 mm arc transition. The side guard plate to be bent has bending lines on both sides, and there is a notch at the end of each bending line. The inside of the notch is a 180° arc with a radius of 25 mm. The center of the arc is 20 mm away from the end face. There is a rounded corner with a radius of 20 mm between the notch and the end face. The thickness of the side guard plate to be bent is 16 mm to 25 mm.

4. The hydraulic support integral bending type side shield manufacturing method according to claim 1, characterized by: Before the bending step, the method also includes a step of straightening the side guard plate to be bent.

5. The method for manufacturing the integral bending side guard plate of the hydraulic support according to claim 4, characterized in that: The assembly steps specifically include: marking the position lines of parts such as guide rod seats and stiffeners on the bent parts after secondary cutting; placing the guide rod seats and stiffeners on the bent parts after secondary cutting; adjusting the position of each part; marking the positioning welding positions and performing positioning welding to ensure that the assembly gap is less than 1mm; and then using a welding robot to perform root welding, filling welding, and cover welding on the weld seams after positioning welding.

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