Spraying workshop for heavy machine part machining

Abstract

The invention relates to the technical field of heavy machine part machining, in particular to a spraying workshop for heavy machine part machining, which comprises a spraying shed and a moving seat arranged in the spraying shed; the spraying shed comprises a fixing frame fixed to the wall face through bolts and two guide rails arranged on the ground and corresponding to the fixing frame, a door frame is arranged on the inner walls of the two guide rails in a sliding mode, and the spraying shed further comprises protective tarpaulin arranged between the fixing frame and the door frame. By arranging the spraying shed, when the heavy machine parts are sprayed, the heavy machine parts can be firstly placed on a plurality of supporting frames, and a driving motor is started to drive a door frame to automatically move in a guide rail, so that a first telescopic frame and a second telescopic frame are unfolded, and meanwhile protective tarpaulin is driven to be unfolded; and after the door curtain is unfolded, the rotating motor is started to drive the door curtain to be unfolded downwards, so that a three-dimensional closed space is formed, paint is prevented from escaping outwards in the spraying process, and meanwhile pollution to the environment is avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the heavy machinery accessory processing technical field, in particular to a spraying workshop for heavy machinery accessory processing. BACKGROUND

[0002] The heavy machinery accessory refers to various parts for heavy machinery, wherein the heavy machinery accessory spraying is a process of uniformly spraying paint in the form of mist on the surface of the accessory by special equipment to form a protective or decorative coating film, and is mainly used for improving wear resistance, corrosion resistance and appearance quality.

[0003] In the spraying operation of the heavy machinery accessory, the heavy machinery is difficult to be hoisted, and therefore, the open-air spraying or the temporary shed building mode is currently adopted to spray the heavy workpiece, in the spraying process, a large amount of paint is externally diffused, which not only causes paint waste but also causes serious environmental pollution, and the bottom of the workpiece lacks a stable supporting mechanism, and there is a great safety hazard in the spraying process.

[0004] Therefore, the application provides a spraying workshop for heavy machinery accessory processing. SUMMARY

[0005] The application aims to solve at least one technical problem in the background art.

[0006] The application provides a spraying workshop for heavy machinery accessory processing, which comprises a spraying shed and a moving seat arranged in the spraying shed. The spraying shed comprises a fixed frame fixed to the wall surface by bolts, and two guide rails arranged on the ground and corresponding to the fixed frame, the inner walls of the two guide rails are slidably provided with a portal frame, the fixed frame and the portal frame are both provided with two symmetrical first telescopic frames on the two sides, and the middle positions of the fixed frame and the portal frame are provided with two symmetrical second telescopic frames, the spraying shed further comprises a protective tarpaulin arranged between the fixed frame and the portal frame, the back surface of the portal frame is provided with a driving box for automatically driving the portal frame to move in the guide rail, and the driving box is internally provided with a driving motor.

[0007] Preferably, the inner top wall of the portal frame is provided with a door curtain, and the back surface of the portal frame is provided with a rotary motor for automatically driving the door curtain to rise and fall.

[0008] By adopting the above technical scheme, the area between the fixed frame and the portal frame can be closed by the downward unfolding of the door curtain, so that the paint mist leakage in the spraying process is avoided.

[0009] Preferably, the inner wall of the guide rail is provided with a plurality of sliding frames equidistantly and slidably arranged, the first telescopic frame is arranged on the outer surface of the sliding frames, and the protective tarpaulin is arranged on the inner side of the sliding frames and covers the upper surfaces of the two second telescopic frames.

[0010] By adopting the above technical scheme, the paint mist generated during spraying can be effectively blocked under the action of the protective tarpaulin, and environmental pollution caused by the paint mist can be avoided.

[0011] Preferably, the upper surface of the moving seat is provided with six support frames for supporting and placing heavy machinery parts, and the bottom end and the top end of the support frame are provided with anti-skid rubber pads.

[0012] By adopting the above technical scheme, the heavy machinery parts can be effectively supported under the action of the support frame, and then the spraying operation of the heavy machinery parts can be facilitated.

[0013] Preferably, the support frame comprises a support cylinder and a support column fixedly arranged at the top end of the support cylinder, and the top end of the support column is fixedly provided with a support plate.

[0014] By adopting the above technical scheme, the heavy machinery parts can be effectively supported by the support plate.

[0015] Preferably, the inside and the bottom of the support cylinder are provided with a positioning mechanism for fixing the support cylinder on the upper surface of the moving seat, the positioning mechanism comprises a rubber sucker fixedly arranged at the bottom end of the support cylinder and a fixing cylinder fixedly arranged at the inner bottom wall of the support cylinder, the fixing cylinder is an open-top structure, the inner wall of the fixing cylinder is slidably provided with a piston, and the inner bottom wall of the fixing cylinder is provided with an air suction pipe extending to the inner top of the rubber sucker.

[0016] By adopting the above technical scheme, after the heavy machinery parts are placed on the support plate, the air in the rubber sucker can be sucked out by the air suction pipe through the movement of the piston, so that the bottom of the support cylinder can be effectively adsorbed and fixed on the upper surface of the moving seat.

[0017] Preferably, the positioning mechanism further comprises a threaded column rotatably arranged at the inner top wall of the support cylinder and a sliding disc slidably arranged on the inner wall of the support cylinder, a through hole is formed in the center of the upper surface of the sliding disc, an inner threaded sleeve is fixedly arranged on the inner wall of the through hole, and the inner wall of the inner threaded sleeve is threadedly connected with the outer surface of the threaded column; two symmetric connecting rods are fixedly arranged on the lower surface of the sliding disc, one end of each of the two connecting rods away from the sliding disc is fixedly connected with the upper surface of the piston, two symmetric limiting sliding rods are fixedly arranged on the inner top wall and the inner bottom wall of the support cylinder, and two symmetric sliding holes are formed in the upper surface of the sliding disc, the inner walls of the two sliding holes are slidably connected with the surfaces of the two limiting sliding rods, respectively.

[0018] By adopting the technical scheme, the sliding disc can be moved upward by rotating the threaded column, and the piston can be automatically moved upward by the connecting rod, so that the air in the rubber suction disc is automatically sucked out, and the stability of the sliding disc during movement can be effectively ensured under the action of the two limiting slide rods.

[0019] Preferably, the outer surface of the support cylinder is rotatably provided with a rotating shaft extending into the inside of the support cylinder, one end of the rotating shaft outside the support cylinder is fixedly provided with a rotating disc, and the surface of the rotating disc is rotatably provided with a crank handle, one end of the rotating shaft inside the support cylinder is fixedly provided with a driving bevel gear, and the outer surface of the threaded column is fixedly provided with a driven bevel gear meshing with the driving bevel gear.

[0020] By adopting the technical scheme, the rotating disc can be rotated to drive the rotating shaft to rotate, and the rotating shaft can be automatically rotated under the action of the driving bevel gear and the driven bevel gear.

[0021] Preferably, the outer surface of the support plate is provided with a limiting mechanism for limiting the parts placed on the support plate, the limiting mechanism comprises a limiting frame rotatably provided on the lower surface of the support plate, and a pull rope provided at the end of the limiting frame for pulling the limiting frame, the lower surface of the support plate is fixedly provided with a mounting frame, the inner wall of the mounting frame is fixedly provided with a connecting shaft, the surface of the limiting frame is fixedly provided with a connecting block, the surface of the connecting block is provided with a rotating hole rotatably connected with the surface of the connecting shaft, the surface of the connecting shaft is sleeved with two symmetrical torsional springs, one end of the torsional spring is fixedly connected with the surface of the connecting block, and the other end of the torsional spring is fixedly connected with the inner wall of the mounting frame.

[0022] By adopting the technical scheme, the top of the limiting frame can be automatically clamped and limited to the heavy mechanical parts placed on the support plate under the action of the torsional spring.

[0023] Preferably, the inside of the support plate and the support column is provided with an annular cavity, the top end of the threaded column extends into the inside of the annular cavity and is rotatably connected with the inner top wall of the annular cavity, the surface of the threaded column inside the annular cavity is fixedly provided with a winding disc, the pull rope is wound in the inside of the winding disc, the inner wall of the annular cavity is rotatably provided with a guide rod for guiding the pull rope, and the lower surface of the support plate is provided with a fan-shaped opening extending to the bottom of the annular cavity for sliding of the pull rope.

[0024] By adopting the technical scheme, after spraying is completed, the inside of the rubber suction disc can be blown when the rotating disc is reversely rotated, the winding disc is driven to wind the pull rope, the limiting frame is driven to rotate, and the top of the limiting frame is away from the heavy mechanical parts, so that the heavy mechanical parts can be conveniently unloaded.

[0025] To sum up, the present application includes at least one of the following beneficial technical effects: 1. The spraying workshop for heavy machinery parts processing provided by the present application can place the heavy machinery parts on the support frames first and drive the gantry to move automatically in the guide rail by starting the driving motor when spraying the heavy machinery parts, so as to expand the first and second telescopic frames and drive the protective tarpaulin to expand, and then start the rotating motor to drive the door curtain to expand downward, so as to form a three-dimensional closed space to prevent the paint from escaping outward during spraying and avoid polluting the environment.

[0026] 2. The spraying workshop for heavy machinery parts processing provided by the present application can drive the driven bevel gear and the threaded column to rotate automatically by rotating the driving bevel gear through rotating the turntable by the crank handle after placing the heavy machinery parts on the support plate on the top of the support frame, so as to drive the sliding disc to move upward, drive the piston to move upward through the connecting rod when the sliding disc moves upward, and make the fixed cylinder suck out the air in the rubber suction cup through the air suction pipe, so that the rubber suction cup can be effectively adsorbed on the upper surface of the moving seat by negative pressure, thereby effectively ensuring the stability of the support frame on which the heavy machinery parts are placed.

[0027] 3. The spraying workshop for heavy machinery parts processing provided by the present application can drive the winding disc to rotate by rotating the threaded column through rotating the turntable by the crank handle, so as to loosen the pull rope, and make the limiting frame rotate automatically under the action of the two torsion springs when the pull rope is loosened, so that the top of the limiting frame is pressed against the upper surface of the heavy machinery parts on the support plate, thereby achieving the purpose of effectively limiting the heavy machinery parts and effectively improving the stability of the heavy machinery parts. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the overall structure schematic diagram of the first embodiment of the present application; Figure 2 is the side view structure schematic diagram of the first embodiment of the present application; Figure 3 is the structure schematic diagram of the fixed frame and the gantry in the first embodiment of the present application; Figure 4 is the overall structure schematic diagram of the second embodiment of the present application; Figure 5 is the bottom view structure schematic diagram of the support cylinder in the second embodiment of the present application; Figure 6 is the cross-sectional structure schematic diagram of the support cylinder and the support plate in the second embodiment of the present application; Figure 7 is the overall structure schematic diagram of the third embodiment of the present application Figure 6Enlarged structural schematic view at A in the middle; Figure 8 Is the limit frame in the second embodiment of the application.

[0029] Reference signs: 100, spray shed; 101, fixed frame; 102, guide rail; 103, portal; 104, first telescopic frame; 105, second telescopic frame; 106, protective tarpaulin; 107, drive box; 108, door curtain; 109, sliding frame; 200, moving seat; 300, wall surface; 400, support frame; 401, support cylinder; 402, support column; 403, support plate; 500, positioning mechanism; 501, rubber suction cup; 502, fixed cylinder; 503, piston; 504, air suction pipe; 505, threaded column; 506, sliding disc; 507, internally threaded sleeve; 508, connecting rod; 509, limit slide rod; 5010, rotating shaft; 5011, rotating disc; 5012, driving bevel gear; 5013, driven bevel gear; 600, limiting mechanism; 601, limiting frame; 602, pull rope; 603, mounting frame; 604, connecting shaft; 605, connecting block; 606, torsional spring; 607, winding disc; 608, guide rod; 609, fan-shaped opening. DETAILED DESCRIPTION

[0030] The following Figures 1 to 8 , the application is further described in detail.

[0031] Embodiment I Please focus on Figure 1 , Figure 2 , Figure 3 , a heavy machinery parts processing spray workshop, comprising a spray shed 100 and a moving seat 200 arranged inside the spray shed 100; the spray shed 100 comprises a fixed frame 101 fixed on the wall surface 300 by bolts, and two guide rails 102 arranged on the ground and corresponding to the fixed frame 101, the inner wall of the two guide rails 102 is slidably provided with a portal 103, the fixed frame 101 and the two sides of the portal 103 are provided with two symmetrical first telescopic frames 104, and the middle position of the fixed frame 101 and the portal 103 is provided with two symmetrical second telescopic frames 105, the spray shed 100 further comprises a protective tarpaulin 106 arranged between the fixed frame 101 and the portal 103, the back of the portal 103 is provided with a drive box 107 for driving the portal 103 to move automatically in the guide rail 102, and the inside of the drive box 107 is provided with a drive motor.

[0032] Please focus on Figure 2 ,Figure 3 The inner top wall of the door frame 103 is provided with a door curtain 108, and the back of the door frame 103 is provided with a rotary motor for driving the door curtain 108 to automatically lift and lower.

[0033] Specifically, the area between the fixed frame 101 and the door frame 103 can be closed by the downward unfolding of the door curtain 108, so as to avoid the leakage of paint mist during spraying.

[0034] Please refer to Figure 2 , Figure 3 The inner wall of the guide rail 102 is provided with a plurality of sliding frames 109 at equal intervals, the first telescopic frame 104 is arranged on the outer surface of the plurality of sliding frames 109, and the protective tarpaulin 106 is arranged on the inner side of the sliding frame 109, and the protective tarpaulin 106 covers the upper surfaces of the two second telescopic frames 105.

[0035] Specifically, the paint mist generated during spraying can be effectively blocked under the action of the protective tarpaulin 106, so as to avoid pollution of the environment by the paint mist.

[0036] Please refer to Figure 2 , Figure 3 The upper surface of the moving seat 200 is provided with six support frames 400 for supporting and placing heavy machinery parts, and the bottom end and the top end of the support frame 400 are provided with anti-skid rubber pads.

[0037] Specifically, the heavy machinery parts can be effectively supported under the action of the support frame 400, thereby facilitating the spraying operation of the heavy machinery parts.

[0038] In this embodiment, by arranging the spraying shed 100, when spraying the heavy machinery parts, the heavy machinery parts can be first placed on the plurality of support frames 400, and the driving motor is started to drive the door frame 103 to automatically move in the guide rail 102, so that the first telescopic frame 104 and the second telescopic frame 105 are unfolded, and the protective tarpaulin 106 is unfolded, and then the rotary motor is started to drive the door curtain 108 to unfold downward, thereby forming a three-dimensional closed space to prevent the paint from escaping outward during spraying, and to avoid pollution to the environment.

[0039] Example two Based on example one, refer to Figures 4 to 8 , and different from example one: Please refer to Figure 4 , Figure 5 The support frame 400 comprises a support cylinder 401 and a support column 402 fixedly arranged at the top end of the support cylinder 401, and the top end of the support column 402 is fixedly provided with a support plate 403.

[0040] Specifically, the heavy machinery parts can be effectively supported by the support plate 403.

[0041] Please refer to Figure 5 , Figure 6 The inside and bottom of the support cylinder 401 are provided with a positioning mechanism 500 for fixing the support cylinder 401 on the upper surface of the moving base 200, the positioning mechanism 500 comprises a rubber suction cup 501 fixed at the bottom end of the support cylinder 401, and a fixing cylinder 502 fixed at the inner bottom wall of the support cylinder 401, and the fixing cylinder 502 is an open-top structure, the inner wall of the fixing cylinder 502 is slidably provided with a piston 503, and the inner bottom wall of the fixing cylinder 502 is provided with an air suction pipe 504 extending to the inner top of the rubber suction cup 501.

[0042] Specifically, after the heavy machinery parts are placed on the support plate 403, the air in the rubber suction cup 501 is sucked out by the air suction pipe 504 through the movement of the piston 503, so that the bottom of the support cylinder 401 can be effectively adsorbed and fixed on the upper surface of the moving base 200.

[0043] Please refer to Figure 5 , Figure 6 The positioning mechanism 500 further comprises a threaded column 505 rotatably arranged on the inner top wall of the support cylinder 401, and a sliding disc 506 slidably arranged on the inner wall of the support cylinder 401, a through hole is formed in the center of the upper surface of the sliding disc 506, and an inner threaded sleeve 507 is fixedly arranged on the inner wall of the through hole, the inner wall of the inner threaded sleeve 507 is threadedly connected with the outer surface of the threaded column 505; two symmetric connecting rods 508 are fixedly arranged on the lower surface of the sliding disc 506, and the ends of the two connecting rods 508 away from the sliding disc 506 are fixedly connected with the upper surface of the piston 503; two symmetric limiting sliding rods 509 are fixedly arranged on the inner top wall and the inner bottom wall of the support cylinder 401, and two symmetric sliding holes are formed in the upper surface of the sliding disc 506, and the inner walls of the two sliding holes are slidably connected with the surfaces of the two limiting sliding rods 509.

[0044] Specifically, the sliding disc 506 can be driven to move upward by the rotation of the threaded column 505, and the piston 503 can be automatically moved upward by the connecting rods 508, so as to automatically suck out the air in the rubber suction cup 501, and the stability of the sliding disc 506 during movement can be effectively ensured under the action of the two limiting sliding rods 509 during the movement of the sliding disc 506.

[0045] Please refer to Figure 5 , Figure 6The outer surface of the supporting cylinder 401 is rotationally provided with a rotating shaft 5010 extending to the inside of the supporting cylinder 401, one end of the rotating shaft 5010 located outside the supporting cylinder 401 is fixedly provided with a rotating disc 5011, the surface of the rotating disc 5011 is rotationally provided with a crank, one end of the rotating shaft 5010 located inside the supporting cylinder 401 is fixedly provided with a driving bevel gear 5012, and the outer surface of the threaded column 505 is fixedly provided with a driven bevel gear 5013 meshing with the driving bevel gear 5012.

[0046] Specifically, the rotating disc 5011 can drive the rotating shaft 5010 to rotate, and the rotating shaft 5010 drives the threaded column 505 to rotate automatically under the action of the driving bevel gear 5012 and the driven bevel gear 5013.

[0047] The positioning mechanism 500 is arranged, after the heavy machinery accessory is placed on the supporting plate 403 on the top of the supporting frame 400, the rotating disc 5011 is rotated by the crank, the rotating disc 5011 drives the driving bevel gear 5012 to rotate, the driving bevel gear 5012 drives the driven bevel gear 5013 and the threaded column 505 to rotate automatically, the threaded column 505 drives the sliding disc 506 to move upwards, the sliding disc 506 drives the piston 503 to move upwards through the connecting rod 508 when moving upwards, so that the fixed cylinder 502 sucks out the air in the rubber suction cup 501 through the air suction pipe 504, and the rubber suction cup 501 can be effectively adsorbed on the upper surface of the moving base 200 by negative pressure, thereby effectively ensuring the stability of the supporting frame 400 on which the heavy machinery accessory is placed.

[0048] Please refer to Figure 7 , Figure 8 The outer surface of the supporting plate 403 is provided with a limiting mechanism 600 for limiting the parts placed on the supporting plate 403, the limiting mechanism 600 comprises a limiting frame 601 rotationally arranged on the lower surface of the supporting plate 403, and a pull rope 602 arranged at the end of the limiting frame 601 for pulling the limiting frame 601, the lower surface of the supporting plate 403 is fixedly provided with a mounting frame 603, the inner wall of the mounting frame 603 is fixedly provided with a connecting shaft 604, the surface of the limiting frame 601 is fixedly provided with a connecting block 605, the surface of the connecting block 605 is provided with a rotating hole rotationally connected with the surface of the connecting shaft 604, the surface of the connecting shaft 604 is sleeved with two symmetrical torsion springs 606, one end of the torsion spring 606 is fixedly connected with the surface of the connecting block 605, and the other end of the torsion spring 606 is fixedly connected with the inner wall of the mounting frame 603.

[0049] Specifically, the top of the limiting frame 601 can be automatically clamped and limited to the heavy machinery accessory placed on the supporting plate 403 under the action of the torsion spring 606.

[0050] Please refer to Figure 7 ,Figure 8 An annular cavity is provided inside the support plate 403 and the support column 402, the top end of the threaded column 505 extends to the inside of the annular cavity and is rotatably connected to the inner top wall of the annular cavity, a winding disk 607 is fixed on the surface of the threaded column 505 located inside the annular cavity, and the pull rope 602 is wound inside the winding disk 607, and a guide rod 608 for guiding the pull rope 602 is rotatably provided on the inner wall of the annular cavity, and a fan-shaped opening 609 extending to the bottom of the annular cavity for the pull rope 602 to slide is provided on the lower surface of the support plate 403.

[0051] Specifically, after spraying is completed, by rotating the turntable 5011 in the opposite direction and blowing air into the rubber suction cup 501, the winding disk 607 is driven to reel in the pull rope 602, thereby driving the limit frame 601 to rotate, and then the top of the limit frame 601 is moved away from the heavy machinery parts, making it easier to unload the heavy machinery parts.

[0052] Among them, the present invention sets a limiting mechanism 600. In the process of rotating the turntable 5011 by the crank to drive the threaded column 505 to rotate, the rotation of the threaded column 505 drives the winding disk 607 to rotate, and the rotation of the winding disk 607 realizes the relaxation of the pull rope 602. When the pull rope 602 is relaxed, the limiting frame 601 can automatically rotate under the action of two torsion springs 606, so that the top of the limiting frame 601 is pressed against the upper surface of the heavy machinery accessories on the support plate 403, thereby achieving the purpose of effectively limiting the heavy machinery accessories and effectively improving the stability of the heavy machinery accessories.

[0053] Working principle: When the heavy machinery parts are sprayed, the heavy machinery parts can be placed on the support frame 400, and the driving motor is started to drive the gantry 103 to move automatically in the guide rail 102, so that the first telescopic frame 104 and the second telescopic frame 105 are unfolded, and the protective tarpaulin 106 is unfolded, and then the rotary motor is started to drive the door curtain 108 to unfold downward, thereby forming a three-dimensional closed space to prevent the paint from escaping outward during spraying, and to avoid pollution to the environment. Moreover, after the heavy machinery parts are placed on the support plate 403 on the top of the support frame 400, the handle is rotated to rotate the rotating disc 5011, the rotation of the rotating disc 5011 drives the driving bevel gear 5012 to rotate, the rotation of the driving bevel gear 5012 drives the driven bevel gear 5013 and the threaded column 505 to rotate automatically, the rotation of the threaded column 505 drives the sliding disc 506 to move upward, and the sliding disc 506 moves upward through the connecting rod 508 to drive the piston 503 to move upward, so that the fixed cylinder 502 sucks the air in the rubber suction cup 501 through the air suction pipe 504, and the rubber suction cup 501 can be effectively adsorbed on the upper surface of the moving seat 200 by negative pressure, thereby effectively ensuring the stability of the support frame 400 on which the heavy machinery parts are placed. Moreover, during the process of rotating the threaded column 505 by rotating the rotating disc 5011 with the handle, the rotation of the threaded column 505 drives the winding disc 607 to rotate, and the rotation of the winding disc 607 releases the pull rope 602, so that the limiting frame 601 can rotate automatically under the action of the two torsion springs 606 when the pull rope 602 is released, the top of the limiting frame 601 is pressed against the upper surface of the heavy machinery parts on the support plate 403, and the heavy machinery parts are effectively limited, thereby effectively improving the stability of the heavy machinery parts.

[0054] The embodiments of the specific implementation are the preferred embodiments of the present application, and are not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A spraying workshop for processing heavy machinery parts, characterized in that: It comprises a spray booth (100) and a movable seat (200) arranged inside the spray booth (100); The spray booth (100) includes a fixed frame (101) fixed to a wall surface (300) by bolts, and two guide rails (102) arranged on the ground and corresponding to the fixed frame (101), the inner walls of the two guide rails (102) are slidably provided with door frames (103), two symmetrical first telescopic frames (104) are provided on both sides of the fixed frame (101) and the door frame (103), and two symmetrical second telescopic frames (105) are provided in the middle position between the fixed frame (101) and the door frame (103), the spray booth (100) also includes a protective tarpaulin (106) arranged between the fixed frame (101) and the door frame (103), and a drive box (107) for driving the door frame (103) to automatically move in the guide rails (102) is provided on the back of the door frame (103), and a drive motor is provided inside the drive box (107).

2. A spraying workshop for processing heavy machinery parts according to claim 1, characterized in that: The inner top wall of the door frame (103) is provided with a door curtain (108), and the back side of the door frame (103) is provided with a rotary motor for driving the door curtain (108) to automatically rise and fall.

3. A spraying workshop for processing heavy machinery parts according to claim 1, characterized in that: The inner wall of the guide rail (102) is provided with a plurality of sliding frames (109) slidably arranged at equal intervals, the first telescopic frame (104) is provided on the outer surface of the plurality of sliding frames (109), and the protective tarpaulin (106) is provided on the inner side of the sliding frame (109), and the protective tarpaulin (106) covers the upper surfaces of the two second telescopic frames (105).

4. A spraying workshop for processing heavy machinery parts according to claim 1, characterized in that: The upper surface of the movable seat (200) is provided with six support frames (400) for supporting and placing heavy machinery accessories, and the bottom and top ends of the support frames (400) are both provided with anti-slip rubber pads.

5. A spraying workshop for processing heavy machinery parts according to claim 4, characterized in that: The support frame (400) comprises a support tube (401) and a support column (402) fixedly mounted on the top end of the support tube (401), wherein a support plate (403) is fixedly mounted on the top end of the support column (402).

6. A spraying workshop for processing heavy machinery parts according to claim 5, characterized in that: A positioning mechanism (500) for fixing the supporting cylinder (401) to the upper surface of the movable seat (200) is provided inside and at the bottom of the supporting cylinder (401). The positioning mechanism (500) comprises a rubber suction cup (501) fixed to the bottom end of the supporting cylinder (401), and a fixing cylinder (502) fixed to the inner bottom wall of the supporting cylinder (401). The fixing cylinder (502) is a top-opening structure. A piston (503) is slidably provided on the inner wall of the fixing cylinder (502), and an air suction pipe (504) extending to the inner top of the rubber suction cup (501) is provided on the inner bottom wall of the fixing cylinder (502).

7. A spraying workshop for processing heavy machinery parts according to claim 6, characterized in that: The positioning mechanism (500) further includes a threaded column (505) rotatably arranged on the inner top wall of the support tube (401), and a sliding disk (506) slidably arranged on the inner wall of the support tube (401), a through hole is provided at the center of the upper surface of the sliding disk (506), and an internal threaded sleeve (507) is fixedly provided on the inner wall of the through hole, and the inner wall of the internal threaded sleeve (507) is threadedly connected to the outer surface of the threaded column (505); Two symmetrical connecting rods (508) are fixedly provided on the lower surface of the sliding disk (506), and the ends of the two connecting rods (508) away from the sliding disk (506) are fixedly connected to the upper surface of the piston (503), the inner top wall and the inner bottom wall of the support cylinder (401) are fixedly provided with two symmetrical limiting slide rods (509), and the upper surface of the sliding disk (506) is respectively provided with two symmetrical sliding holes, and the inner walls of the two sliding holes are respectively slidably connected to the surfaces of the two limiting slide rods (509).

8. A spraying workshop for processing heavy machinery parts according to claim 7, characterized in that: A rotating shaft (5010) extending into the interior of the supporting cylinder (401) is rotatably provided on the outer surface of the supporting cylinder (401); a rotating disk (5011) is fixedly provided on one end of the rotating shaft (5010) located outside the supporting cylinder (401); and a crank is rotatably provided on the surface of the rotating disk (5011); a driving bevel gear (5012) is fixedly provided on one end of the rotating shaft (5010) located inside the supporting cylinder (401); and a driven bevel gear (5013) meshing with the driving bevel gear (5012) is fixedly provided on the outer surface of the threaded column (505).

9. A spraying workshop for processing heavy machinery parts according to claim 8, characterized in that: The outer surface of the support plate (403) is provided with a limiting mechanism (600) for limiting the parts placed on the support plate (403), the limiting mechanism (600) comprising a limiting frame (601) rotatably provided on the lower surface of the support plate (403), and a pull rope (602) provided at the end of the limiting frame (601) for pulling the limiting frame (601), the lower surface of the support plate (403) is fixedly provided with a mounting frame (603), the mounting frame (603) A connecting shaft (604) is fixedly provided on the inner wall of the mounting frame (603), a connecting block (605) is fixedly provided on the surface of the limiting frame (601), a rotating hole is provided on the surface of the connecting block (605) and is rotatably connected to the surface of the connecting shaft (604), and two symmetrical torsion springs (606) are sleeved on the surface of the connecting shaft (604), one end of the torsion spring (606) is fixedly connected to the surface of the connecting block (605), and the other end of the torsion spring (606) is fixedly connected to the inner wall of the mounting frame (603).

10. A spraying workshop for processing heavy machinery parts according to claim 9, characterized in that: An annular cavity is provided inside the support plate (403) and the support column (402), the top end of the threaded column (505) extends to the inside of the annular cavity and is rotatably connected to the inner top wall of the annular cavity, a winding disk (607) is fixed on the surface of the threaded column (505) located inside the annular cavity, the pull rope (602) is wound inside the winding disk (607), a guide rod (608) for guiding the pull rope (602) is rotatably provided on the inner wall of the annular cavity, and a fan-shaped opening (609) extending to the bottom of the annular cavity for the pull rope (602) to slide is provided on the lower surface of the support plate (403).

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