Manufacturing device for crane parts

Abstract

The invention relates to the technical field of steel plate cutting, in particular to a manufacturing device for crane parts. The device comprises a workbench and a cutting table, a first air cylinder is arranged in a moving frame, a base plate is arranged at the end of the first air cylinder, racks are arranged on the two sides of the base plate, and blocking assemblies are arranged on the two sides of the racks. A first air cylinder is controlled to drive a base plate to move downwards in the vertical direction, the base plate drives a gear rod to rotate in the process of driving a rack to move downwards, when the gear rod rotates, a pull rope wound around the surface of a winding roller is loosened, and sliding columns arranged at the ends of baffles relatively move in the horizontal direction under the acting force of compression springs till the baffles surround the two sides of the cutting machine; slag generated by cutting is automatically blocked, operators are protected, the other part of the slag falls to a cutting path, the other part of the slag is matched with a moving grinding wheel roller, the slag can be quickly ground and removed, secondary grinding on a cut steel plate in the later period is avoided, and therefore the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel plate cutting, in particular to a manufacturing device for crane parts. Background Art

[0002] In the manufacture and use of cranes, the boom is a key component, and its quality and performance directly affect the overall working efficiency and safety of the crane. The manufacture of the boom is inseparable from high-quality steel plate cutting.

[0003] There are many existing technologies for steel plate cutting devices, such as: Chinese patent publication number CN113953686A discloses a steel plate cutting device, including an equipment platform, a bridge, a protective device, a propulsion device and a collection device. A drain groove is provided on the upper surface of the equipment platform, a collection device is provided below the drain groove, a support plate is provided above the drain groove, a propulsion device is provided on one side of the support plate, a bridge is provided above the support plate, and a protective device is provided on one side of the bridge. The patent is provided with a propulsion device, a support plate, a sliding rod and a fixing plate, so that when cutting a steel plate, the propulsion device can push the support plate with the cooperation of the sliding rod, place the steel plate on the upper surface of the support plate, so that the support plate carries the steel plate forward, and the bridge is provided to push the laser cutting machine to slide horizontally along the bridge.

[0004] During use, the current steel plate cutting device uses a cutting machine to cut the steel plate. During the cutting process, burrs are easily generated at the cutting site, which poses a safety hazard when unloading the material after cutting is completed. In addition, a large amount of heat energy is generated during the cutting process of the cutting machine, causing the cutting residue to form molten material that splashes onto the surface of the steel plate, resulting in the need for secondary grinding of the processed steel plate, affecting production efficiency.

[0005] In view of this, we propose a manufacturing device for crane parts. Summary of the invention

[0006] The object of the present invention is to provide a manufacturing device for crane parts to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention aims to provide a manufacturing device for crane parts, comprising a workbench and a cutting table, the cutting tables are symmetrically arranged with a gap reserved therebetween, a sliding frame is arranged above the workbench, a moving frame is arranged at the end of the sliding frame, a first cylinder is arranged inside the moving frame, a base plate is arranged at the end of the first cylinder, racks are arranged on both sides of the base plate, blocking components are arranged on both sides of the rack, the blocking components are used to block the slag in the cutting so that the slag is gathered between the blocking components, a cutting machine is arranged at the center of the bottom of the base plate, the cutting machine is used to cut the steel plate placed on the surface of the cutting table, support rods are arranged inside the base plate, the support rods are symmetrically arranged on both sides of the cutting machine, and the surfaces of the support rods are provided with edge pressing components, the edge pressing components are used to press and limit the cut steel plate and grind the slag at the cutting position, a through groove is opened on the surface of the cutting table, a moving component is arranged in the through groove, and the moving component is used to move and place the steel plate placed on the surface of the cutting table.

[0008] As a further improvement of the present technical solution, the moving component includes a sliding plate provided with a through groove on the surface of the cutting table, a plurality of groups of rotating rollers are provided on the surface of the sliding plate, a hollow column is provided under the sliding plate, a support column is provided on the inner wall of the hollow column for sliding, the support column is fixed at the bottom of the sliding plate, and an elastic member is provided between the hollow column and the support column.

[0009] As a further improvement of the present technical solution, a second cylinder is provided on both sides of the workbench, and a wedge plate is provided at the piston rod at the end of the second cylinder. When the wedge plate is moved to the bottom of the sliding plate, the sliding plate is moved to the outside of the cutting table to support the steel plate by the supporting force of the wedge plate. When the second cylinder drives the wedge plate to move away from the sliding plate, the sliding plate is moved into the through groove by the pressure of the steel plate.

[0010] As a further improvement of the present technical solution, the edge pressing assembly includes a symmetrical fixed plate arranged on the surface of the first cylinder, an elastic telescopic rod is provided at the bottom of the fixed plate, a fixed frame is provided at the bottom of the elastic telescopic rod, a pressing wheel is provided at the bottom of the fixed frame, and the bottom of the pressing wheel is lower than the cutting blade of the cutting machine.

[0011] As a further improvement of the technical solution, a grinding wheel roller is provided between the fixed frames at the rear end of the cutting machine. The bottom of the grinding wheel roller is at the same level as the pressure wheel. When the pressure wheel moves, it drives the grinding wheel roller to grind the burrs on the surface of the steel plate at the cutting location.

[0012] As a further improvement of the present technical solution, an extension gear is provided on one side of the pressure wheel at the front end of the cutting machine, the extension gear passes through the fixed frame and a meshing gear is vertically engaged at the end, a clamping plate is provided under the meshing gear, a cleaning brush is provided at the bottom of the clamping plate, and the cleaning brush is used to sweep away impurity particles on the surface of the steel plate.

[0013] As a further improvement of the technical solution, an air bag is provided between the clamping plates, and the cleaning brush is tightly fitted to the surface of the steel plate under the force of the air bag.

[0014] As a further improvement of the present technical solution, the barrier assembly includes a gear rod arranged on one side of the rack, a winding roller is arranged on the surface of the gear rod, the gear rod and the winding roller rotate coaxially, column tubes are arranged on both sides of the bottom of the movable frame, a sliding column is slidingly arranged on the inner wall of the column tube, a compression spring is connected between the sliding column and the column tube, a baffle is arranged at the end of the sliding column, and a pull rope is arranged between the baffle plate and the winding roller.

[0015] As a further improvement of the technical solution, a fixed pulley is provided under the gear rod, and the pull rope moves in contact with the bottom of the fixed pulley. When the rack moves downward, it drives the gear rod to engage and rotate, and the pull rope on the winding roller loosens, causing the baffle to move relatively to surround both sides of the cutting machine.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the manufacturing device for crane parts, the first cylinder is controlled to drive the base plate to move downward in the vertical direction. The base plate drives the rack to move downward, thereby driving the gear rod to rotate. When the gear rod rotates, the pull rope wrapped around the surface of the winding roller is loosened, and the sliding column provided at the end of the baffle is relatively moved in the horizontal direction by the force of the compression spring until the baffle surrounds both sides of the cutting machine, automatically blocking the slag generated by the cutting, so that the slag falls on the cutting path, protecting the operator, and cooperating with the moving grinding wheel roller, the slag can be quickly polished and removed, avoiding the secondary polishing of the cut steel plate in the later stage, thereby improving production efficiency.

[0017] 2. In the manufacturing device for crane parts, during the mobile cutting process, an extension gear is provided on one side of the pressure wheel at the front end of the cutting machine. When the pressure wheel rotates, the extension gear is driven to rotate. A meshing gear is vertically meshed above the extension gear, so that the clamping plate below the meshing gear drives the cleaning brush to rotate quickly, and the sand and gravel particles attached to the cutting path are swept away. By arranging air bags between the clamping plates, the cleaning brush fits tightly to the steel plate surface during the sweeping process, thereby improving the service life of the cutting knife of the cutting machine.

[0018] 3. In the manufacturing device for crane parts, the piston rod at the end of the second cylinder is controlled to drive the wedge plate to move relative to each other in the horizontal direction, thereby supporting the bottom of the sliding plate. When the end of the steel plate is placed on the surface of the sliding plate, the operator pushes the steel plate to move. After the movement is completed, the piston rod at the end of the second cylinder is controlled to drive the wedge plates to move apart. At this time, the surface of the sliding plate is pressed against the support column by the pressure of the steel plate. The support column slides on the inner wall of the elastic part to drive the sliding plate downward, so that the sliding plate moves into the through groove, so that the bottom of the steel plate is closely fitted with the surface of the cutting table, thereby facilitating the rapid placement of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of a moving assembly of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of point A; Figure 4 This is one of the schematic diagrams of the edge pressing assembly structure of the present invention; Figure 5 This is the second schematic diagram of the structure of the edge pressing assembly of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of point B; Figure 7 It is a front view of the overall structure of the moving frame of the present invention; Figure 8 It is a schematic diagram of the substrate structure of the present invention; Fig. 9 It is a cross-sectional view of the barrier component of the present invention.

[0020] The meaning of each number in the figure is: 100, workbench; 101, sliding frame; 102, cutting table; 200, moving frame; 201, first cylinder; 202, base plate; 203, rack; 204, cutting machine; 205, support rod; 300, moving assembly; 301, sliding plate; 302, hollow column; 303, supporting column; 304, elastic member; 305, second cylinder; 306, wedge plate; 400, edge pressing assembly; 401, fixing plate; 402, elastic telescopic rod; 403, fixing frame; 404, pressing wheel; 405, grinding wheel roller; 406, extension gear; 407, meshing gear; 408, clamping plate; 409, air bag; 410, cleaning brush; 500, barrier assembly; 501, gear rod; 502, winding roller; 503, fixed pulley; 504, baffle; 505, column; 506, slide column; 507, compression spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] The purpose of this embodiment is to provide a manufacturing device for crane parts, referring to Figure 1-Figure 9 As shown, it includes a workbench 100 and a cutting table 102. The cutting tables 102 are symmetrically arranged with a gap reserved therebetween. A sliding frame 101 is arranged above the workbench 100. A moving frame 200 is arranged at the end of the sliding frame 101. A first cylinder 201 is arranged inside the moving frame 200. A base plate 202 is arranged at the end of the first cylinder 201. Racks 203 are arranged on both sides of the base plate 202. Blocking components 500 are arranged on both sides of the racks 203. The blocking components 500 are used to block the slag in cutting so that the slag accumulates between the blocking components 500. The center of the bottom of the base plate 202 A cutting machine 204 is provided, and the cutting machine 204 is used to cut the steel plate placed on the surface of the cutting table 102. A support rod 205 is provided inside the base plate 202, and the support rods 205 are symmetrically arranged on both sides of the cutting machine 204. The surfaces of the support rods 205 are provided with edge clamping components 400, and the edge clamping components 400 are used to press and limit the cut steel plate and grind the slag at the cutting position. A through groove is opened on the surface of the cutting table 102, and a moving component 300 is provided in the through groove. The moving component 300 is used to move and place the steel plate placed on the surface of the cutting table 102.

[0024] Considering that when cutting the steel plate, it is inconvenient to adjust and move the position of the steel plate due to the friction when the steel plate is moved to the surface of the cutting table 102, which results in a waste of time when placing the steel plate. Therefore, the moving component 300 includes a sliding plate 301 arranged at the through groove on the surface of the cutting table 102, and a plurality of rotating rollers are arranged on the surface of the sliding plate 301. A hollow column 302 is arranged below the sliding plate 301, and a support column 303 is slidably arranged on the inner wall of the hollow column 302. The support column 303 is fixed to the bottom of the sliding plate 301, and an elastic member 304 is arranged between the hollow column 302 and the support column 303. Second cylinders 305 are arranged on both sides of the workbench 100, and a piston rod at the end of the second cylinder 305 is provided with a wedge plate 306. When the wedge plate 306 is moved below the sliding plate 301, the sliding plate 301 is supported by the wedge plate 306 and moves to the outside of the cutting table 102 To support the steel plate, when the second cylinder 305 drives the wedge plate 306 to move away from the sliding plate 301, the sliding plate 301 is moved into the through groove by the pressure of the steel plate. When placing the steel plate, the piston rod at the end of the second cylinder 305 is controlled to drive the wedge plate 306 to move relative to the horizontal direction, so as to support the bottom of the sliding plate 301. When the end of the steel plate is placed on the surface of the sliding plate 301, the operator pushes the steel plate to move. After the movement is completed, the piston rod at the end of the second cylinder 305 is controlled to drive the wedge plate 306 to move away. At this time, the surface of the sliding plate 301 is squeezed by the pressure of the steel plate to squeeze the support column 303. The support column 303 slides on the inner wall of the elastic member 304 to drive the sliding plate 301 downward, so that the sliding plate 301 moves into the through groove, so that the bottom of the steel plate is closely fitted with the surface of the cutting table 102, thereby facilitating the rapid placement of the steel plate.

[0025] Taking into account that when the cutting machine 204 is cutting the steel plate, the steel plate is easily slightly displaced by the cutting force, resulting in the deviation of the cutting path, which affects the subsequent processing and use. Therefore, the edge pressing assembly 400 includes a symmetrical fixed plate 401 arranged on the surface of the first cylinder 201, and an elastic telescopic rod 402 is provided at the bottom of the fixed plate 401. A fixed frame 403 is provided at the bottom of the elastic telescopic rod 402. A pressure wheel 404 is provided at the bottom of the fixed frame 403, and the bottom of the pressure wheel 404 is lower than the cutting blade of the cutting machine 204. The piston rod at the end of the first cylinder 201 drives the base plate 202 to move downward in the vertical direction until the cutting machine 204 cuts the steel plate, and the pressure wheel 404 is in contact with the surface of the steel plate and squeezes the elastic telescopic rod 402. During the cutting process, the elastic telescopic rod 402 applies a reverse force to the fixed frame 403, so that the pressure wheel 404 arranged inside the fixed frame 403 presses the front and rear ends of the cutting position to avoid displacement of the steel plate caused by the cutting force during the cutting process, thereby improving the cutting accuracy of the steel plate.

[0026] Considering that when cutting the steel plate, the burrs generated during the cutting process are on the surface of the cutting position, which may easily cause harm to the operator, a grinding wheel roller 405 is provided between the fixed frame 403 at the rear end of the cutting machine 204, and the bottom of the grinding wheel roller 405 is at the same level as the pressure wheel 404. When the pressure wheel 404 moves, it drives the grinding wheel roller 405 to grind the burrs on the surface of the steel plate at the cutting position. When the fixed frame 403 at the rear end of the cutting machine 204 drives the pressure wheel 404 to press the cutting position, the grinding wheel roller 405 is fixed between the rear end fixed frame 403 to grind and clean the burrs on the surface of the steel plate at the cutting position. After the steel plate is cut, it is avoided to scratch the operator during the material cutting process, thereby improving the safety of the operation; wherein, refer to Figure 5 As shown, the front end and the rear end of the cutting machine 204 are respectively the R side and the L side.

[0027] Since a small amount of sand and gravel particles are easily adhered to the surface of the steel plate during storage, when the cutter 204 cuts to the sand and gravel particles, it is easy to cause the cutting blade to bend, affecting the subsequent normal cutting of the steel plate. Therefore, an extension gear 406 is provided on one side of the pressure wheel 404 at the front end of the cutter 204. The extension gear 406 passes through the fixed frame 403 and is vertically meshed with a meshing gear 407 at the end. A clamping plate 408 is provided below the meshing gear 407. A cleaning brush 410 is provided at the bottom of the clamping plate 408. The cleaning brush 410 is used to sweep away foreign particles on the surface of the steel plate. During the mobile cutting process, the pressure wheel 404 at the front end of the cutter 204 is provided on one side. There is an extension gear 406, which drives the extension gear 406 to rotate when the pressure wheel 404 rotates. A meshing gear 407 is vertically meshed above the extension gear 406, and the gear ratio of the extension gear 406 to the meshing gear 407 is 1:4. When the pressure wheel 404 drives the extension gear 406 to rotate, the clamping plate 408 under the meshing gear 407 drives the cleaning brush 410 to rotate quickly, and the sand and gravel particles attached to the cutting path are swept away. By arranging an air bag 409 between the clamping plates 408, the cleaning brush 410 can fit tightly to the steel plate surface during the sweeping process, thereby improving the service life of the cutting knife of the cutting machine 204.

[0028] Taking into account that during the cutting process, the waste produces a small amount of slag under high temperature and adheres to the surface of the steel plate, and a small amount of slag splashes to the outside and causes burns to the workers, the barrier assembly 500 includes a gear rod 501 arranged on one side of the rack 203, and a winding roller 502 is arranged on the surface of the gear rod 501. The gear rod 501 and the winding roller 502 rotate coaxially, and column barrels 505 are arranged on both sides of the bottom of the movable frame 200. A sliding column 506 is slidingly arranged on the inner wall of the column barrel 505. A compression spring 507 is fixedly connected between the sliding column 506 and the column barrel 505, and a baffle 504 is arranged at the end of the sliding column 506. A pull rope is arranged between the baffle 504 and the winding roller 502. A fixed pulley 503 is arranged under the gear rod 501, and the pull rope moves in contact with the bottom of the fixed pulley 503. When the rack 203 moves downward, the gear rod 501 is driven to mesh and rotate, and the winding roller 502 on the The loosening of the pull rope causes the baffle 504 to move relatively to surround the two sides of the cutting machine 204. During the cutting process of the steel plate, the first cylinder 201 is controlled to drive the base plate 202 to move downward in the vertical direction. The base plate 202 drives the rack 203 to move downward and drives the gear rod 501 to rotate. When the gear rod 501 rotates, the pull rope wrapped around the surface of the winding roller 502 loosens, and the sliding column 506 provided at the end of the baffle 504 is subjected to the force of the compression spring 507 and moves relatively in the horizontal direction until the baffle 504 surrounds the two sides of the cutting machine 204. During the process of the baffle 504 surrounding the two sides of the cutting machine 204, the operating personnel are protected, and the other part of the slag falls into the cutting path. With the moving grinding wheel roller 405, the slag can be quickly polished and removed, avoiding the secondary polishing of the cut steel plate in the later stage, thereby improving production efficiency.

[0029] In summary, the working principle of the present invention is as follows: during specific use, the piston rod at the end of the second cylinder 305 is controlled to drive the wedge plate 306 to move relative to each other in the horizontal direction, so as to support the bottom of the sliding plate 301. When the end of the steel plate is placed on the surface of the sliding plate 301, the operator pushes the steel plate to move. After the movement is completed, the piston rod at the end of the second cylinder 305 is controlled to drive the wedge plate 306 to move away. At this time, the surface of the sliding plate 301 is subjected to the pressure of the steel plate to squeeze the support column 303. The support column 303 slides on the inner wall of the elastic member 304 to drive the sliding plate 301 to move downward, so that the sliding plate 301 moves into the through groove, so that the bottom of the steel plate is closely fitted with the surface of the cutting table 102, thereby facilitating the rapid placement of the steel plate.

[0030] When the piston rod at the end of the first cylinder 201 drives the base plate 202 to move downward in the vertical direction until the cutting machine 204 cuts the steel plate, the pressure wheel 404 is in contact with the surface of the steel plate and squeezes the elastic telescopic rod 402. During the cutting process, the elastic telescopic rod 402 applies a reverse force to the fixed frame 403, so that the pressure wheel 404 arranged inside the fixed frame 403 presses the front and rear ends of the cutting position to avoid displacement of the steel plate due to the cutting force during the cutting process, thereby improving the cutting accuracy of the steel plate. When the fixed frame 403 at the rear end of the cutting machine 204 drives the pressure wheel 404 to press the cutting position, the grinding wheel roller 405 is fixed between the rear end fixed frame 403 to grind and clean the burrs on the surface of the steel plate at the cutting position. After the steel plate is cut, avoid The first cylinder 201 is controlled to drive the base plate 202 to move downward in the vertical direction, and the base plate 202 drives the rack 203 to move downward, driving the gear rod 501 to rotate. When the gear rod 501 rotates, the pull rope wrapped around the surface of the winding roller 502 is loosened, and the sliding column 506 provided at the end of the baffle plate 504 is relatively moved in the horizontal direction by the force of the compression spring 507 until the baffle plate 504 surrounds the two sides of the cutting machine 204. In the process of the baffle plate 504 surrounding the two sides of the cutting machine 204, the operators are protected, and the other part of the slag falls to the cutting path. With the moving grinding wheel roller 405, the slag can be quickly polished and removed, avoiding the secondary polishing of the cut steel plate in the later stage, thereby improving production efficiency.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A manufacturing device for crane parts, characterized in that: The invention comprises a workbench (100) and a cutting table (102), wherein the cutting tables (102) are symmetrically arranged with a gap reserved therebetween, a sliding frame (101) is arranged above the workbench (100), a moving frame (200) is arranged at the end of the sliding frame (101), a first cylinder (201) is arranged inside the moving frame (200), a base plate (202) is arranged at the end of the first cylinder (201), racks (203) are arranged on both sides of the base plate (202), blocking components (500) are arranged on both sides of the racks (203), the blocking components (500) are used to block slag during cutting so that the slag accumulates between the blocking components (500), and the base plate (202) A cutting machine (204) is provided at the center of the bottom, and the cutting machine (204) is used to cut a steel plate placed on the surface of the cutting table (102). Support rods (205) are provided inside the base plate (202), and the support rods (205) are symmetrically arranged on both sides of the cutting machine (204). The surfaces of the support rods (205) are provided with edge pressing assemblies (400), and the edge pressing assemblies (400) are used to press and limit the cut steel plate and grind the slag at the cutting position. A through groove is opened on the surface of the cutting table (102), and a moving assembly (300) is provided in the through groove. The moving assembly (300) is used to move and place the steel plate placed on the surface of the cutting table (102).

2. The manufacturing device for crane parts according to claim 1, characterized in that: The moving assembly (300) comprises a sliding plate (301) provided at a through groove on the surface of the cutting table (102), a plurality of rotating rollers being provided on the surface of the sliding plate (301), a hollow column (302) being provided below the sliding plate (301), a supporting column (303) being slidably provided on the inner wall of the hollow column (302), the supporting column (303) being fixed at the bottom of the sliding plate (301), and an elastic member (304) being provided between the hollow column (302) and the supporting column (303).

3. The manufacturing device for crane parts according to claim 2, characterized in that: Second cylinders (305) are provided on both sides of the workbench (100), and a piston rod at the end of the second cylinder (305) is provided with a wedge plate (306). When the wedge plate (306) is moved below the sliding plate (301), the sliding plate (301) is supported by the wedge plate (306) and moves to the outside of the cutting table (102) to support the steel plate. When the second cylinder (305) drives the wedge plate (306) to move away from the sliding plate (301), the sliding plate (301) is pressed by the steel plate and moves into the through groove.

4. The manufacturing device for crane parts according to claim 1, characterized in that: The edge pressing assembly (400) comprises a symmetrical fixing plate (401) arranged on the surface of the first cylinder (201), the fixing plate (401) is provided with an elastic telescopic rod (402) at the bottom, the elastic telescopic rod (402) is provided with a fixing frame (403) at the bottom, the fixing frame (403) is provided with a pressing wheel (404) at the bottom, and the bottom of the pressing wheel (404) is lower than the cutting blade of the cutting machine (204).

5. The manufacturing device for crane parts according to claim 4, characterized in that: A grinding wheel roller (405) is provided between the fixed frame (403) at the rear end of the cutting machine (204), and the bottom of the grinding wheel roller (405) is at the same level as the pressure wheel (404). When the pressure wheel (404) moves, it drives the grinding wheel roller (405) to grind the burrs on the surface of the steel plate at the cutting location.

6. The manufacturing device for crane parts according to claim 5, characterized in that: An extension gear (406) is provided on one side of the pressure wheel (404) at the front end of the cutting machine (204); the extension gear (406) passes through the fixed frame (403) and has an end portion vertically meshed with a meshing gear (407); a clamping plate (408) is provided below the meshing gear (407); a cleaning brush (410) is provided at the bottom of the clamping plate (408); the cleaning brush (410) is used to clean impurity particles on the surface of the steel plate.

7. The manufacturing device for crane parts according to claim 6, characterized in that: An air bag (409) is provided between the clamping plates (408), and the cleaning brush (410) is tightly fitted to the surface of the steel plate due to the force of the air bag (409).

8. The manufacturing device for crane parts according to claim 1, characterized in that: The barrier assembly (500) comprises a gear rod (501) arranged on one side of the rack (203); a winding roller (502) is arranged on the surface of the gear rod (501); the gear rod (501) and the winding roller (502) rotate coaxially; columns (505) are arranged on both sides of the bottom of the movable frame (200); a sliding column (506) is slidably arranged on the inner wall of the column tube (505); a compression spring (507) is connected between the sliding column (506) and the column tube (505); a baffle (504) is arranged at the end of the sliding column (506); and a pull rope is arranged between the baffle (504) and the winding roller (502).

9. The manufacturing device for crane parts according to claim 8, characterized in that: A fixed pulley (503) is provided below the gear rod (501), and the pull rope moves in contact with the bottom of the fixed pulley (503). When the rack (203) moves downward, the gear rod (501) is driven to mesh and rotate, and the pull rope on the winding roller (502) is loosened to cause the baffle (504) to move relatively to surround the two sides of the cutting machine (204).

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