Engine body overturning off-line fixed-point local cleaning device and method

Abstract

The invention discloses an engine body overturning off-line fixed-point local cleaning device and method, and belongs to the technical field of engine manufacturing. The engine body overturning off-line fixed-point local cleaning device comprises a middle supporting body, and bearing mounting plates are fixedly connected to the two sides of the middle supporting body; a lifting mechanism is mounted at the tops of the two bearing mounting plates, shaft bodies are rotationally connected to the interiors of the bottoms of the two bearing mounting plates, turnover mechanisms are mounted on the opposite sides of the two shaft bodies, fixing mechanisms are mounted on the inner walls of the turnover mechanisms, and a limiting mechanism is mounted at the top of the middle supporting body. By designing the hoisting mechanism, the overturning mechanism, the fixing mechanism and the limiting mechanism, fixed cleaning can be conducted according to hole sites of the engine body in the cleaning process of the engine body, in addition, when the engine body is transferred in the cleaning process, mechanical control can be adopted, manual participation is reduced, and the cleaning efficiency is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of engine manufacturing, and in particular relates to a device and method for local cleaning of fixed points outside an engine body flip line. Background Art

[0002] The engine block is one of the core structures of the engine. It is usually made of aluminum alloy, magnesium alloy, titanium alloy or other high-strength materials to withstand the various forces and stresses generated by the high temperature, high pressure and high-speed operation inside the engine. It is the main carrier of the engine, responsible for supporting and fixing the various components inside the engine, such as the piston, crankshaft, valves, etc., and ensuring that these components can work together efficiently and stably during operation. The design and manufacture of the engine block requires extremely high precision and durability, because it not only needs to have excellent mechanical strength and thermal stability, but also must ensure good sealing and corrosion resistance to ensure long-term reliable operation of the engine.

[0003] At present, when engines are being assembled, many engine bodies are directly provided by suppliers. There are some deviations in the cleanliness of the engine bodies. The engine bodies need to be partially cleaned before they can be assembled online. However, the existing engine bodies themselves are heavy, which makes transportation and rolling inconvenient during the cleaning process, and the cleaning efficiency is extremely low. In addition, during the cleaning process, manual participation is required in the flipping and fixing process, which results in low overall cleaning efficiency of the engine, greatly reducing the factory production efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the disadvantages of the above-mentioned prior art and provide a local cleaning device for a fixed point outside the turning line of an engine body.

[0005] The technical solution adopted to solve the above technical problems is: an engine body flip line outside the fixed point local cleaning device, including an intermediate support body, the two sides of the intermediate support body are fixedly connected with bearing mounting plates, and the tops of the two bearing mounting plates are equipped with lifting mechanisms;

[0006] The bottom of the two bearing mounting plates are both rotatably connected with a shaft body, and the opposite sides of the two shaft bodies are both installed with a flipping mechanism;

[0007] The inner wall of the turnover mechanism is installed with a fixing mechanism, and the top of the intermediate support body is installed with a limiting mechanism.

[0008] Furthermore, the lifting mechanism includes a crossbeam body fixedly connected to the inside of two bearing mounting plates, a fixing sleeve fixedly connected to the middle end of the outer wall of the crossbeam body, a lifting ring assembly fixedly connected to the top of the fixing sleeve, a hook plate fixedly connected to the outer wall of the lifting ring assembly, spacers are slidably connected to both sides of the outer wall of the crossbeam body, one side of the two spacers are rotatably connected to the crossbeam locking nuts, and the two spacers and the crossbeam locking nuts are located on the outside of the corresponding bearing mounting plates.

[0009] Through the above technical scheme, when in use, a crane is used to connect with the lifting mechanism, so that the engine body can reach the required position during cleaning, and the engine body can be changed with the change of different operators during cleaning, making cleaning more convenient. Specifically, the two bearing mounting plates are respectively connected to the two sides of the beam body through two spacers and fixed with the beam locking nuts to build an overall frame, and then the connecting device of the crane is used to connect the hook plate composed of the fixing sleeve and the lifting ring assembly on the beam body, so that the cleaning device can be smoothly lifted, which is more convenient to use.

[0010] Furthermore, the flipping mechanism includes a body rear end mounting plate movably connected to one end of the outer wall of one of the shaft bodies, one end of the outer wall of the other shaft body is movably connected to the body front end mounting plate, the other ends of the outer walls of the two shaft bodies are fixedly connected with bearing retaining rings, one side of the two bearing retaining rings are provided with radial bearings, one side of the outer walls of the two shaft bodies are provided with semicircular keys, one side of the outer walls of the two shaft bodies are provided with body mounting plate locking nuts, the two radial bearings are respectively fixedly connected to the corresponding bearing mounting plates, the outer walls of the two shaft bodies are fixedly connected to the corresponding radial bearings, and the two semicircular keys and the body mounting plate locking nuts are respectively located inside the corresponding body rear end mounting plate and body front end mounting plate.

[0011] Through the above technical scheme, before cleaning the engine body, the cleaning device is installed by using the flip mechanism, and the fixed angle and the hole position of the engine body are strictly matched through special holes to ensure that the cleaning is more convenient and quick. Specifically, the two shaft bodies are connected with the corresponding bearing mounting plates, the rear end mounting plate of the body and the front end mounting plate of the body by using radial bearings, and the two are connected by using radial bearings, semicircular keys and locking nuts of the body mounting plates, which are not easy to fall off while ensuring rotation. Then the engine body is placed on the rear end mounting plate of the body and the front end mounting plate of the body. Between the mounting plates, multiple flat washers, spring washers and mounting plate bolts are used to connect with the positioning holes on the machine body, and then the crane is started to lift the machine body to a suitable position. At this time, the shaft body is used to drive the rear end mounting plate and the front end mounting plate of the machine body to rotate. A through hole matching the crossbeam is opened at the upper end of the bearing mounting plate, which is a transition fit, and a stepped hole matching the bearing is opened at the lower end, which is an interference fit. A pin hole is opened in the middle, which is a clearance fit. A bearing retaining ring groove is opened at one end of the shaft body, and a convex circle, thread and cotter pin hole are opened at the other end. The center of the shaft is concentric with the center of the machine crankshaft, so as to adapt to a wider range of needs and faster assembly.

[0012] Furthermore, the fixing mechanism includes a plurality of planar washers movably connected to the surfaces of the corresponding rear end mounting plate and the front end mounting plate of the body, a spring washer is provided on one side of the plurality of planar washers, and mounting plate bolts are provided inside the plurality of planar washers and the spring washers.

[0013] Through the above technical scheme, when the engine body is placed in the cleaning device, the fixing mechanism is used to fix the engine body. The rear end mounting plate and the front end mounting plate of the body are designed with corresponding through holes according to the screw holes of the gear chamber and the flywheel housing installed at the front and rear ends of the body. The lower parts of the rear end mounting plate and the front end mounting plate of the body have makeshift holes of the shaft body, so that the cleaning applicability of the cleaning device is higher. Specifically, the engine body is then placed between the rear end mounting plate and the front end mounting plate of the body. At this time, multiple flat washers, spring washers and mounting plate bolts are used to connect with the positioning holes on the body. Then, the crane is started to lift the body to a suitable position. At this time, the shaft body is used to drive the rear end mounting plate and the front end mounting plate of the body to rotate, and then the body is flipped over.

[0014] Furthermore, the limiting mechanism includes a motor fixedly connected to the bottom of the intermediate support body, the motor driving shaft end is fixedly connected to the first gear, the inner wall of the intermediate support body is rotatably connected to a threaded sleeve, the top of the threaded sleeve is fixedly connected to a second gear, the inner wall of the threaded sleeve is threadedly connected to a threaded rod, the bottom of the threaded rod is fixedly connected to an extrusion block, the outer wall of the second gear is meshed with two racks, one side of the two racks is fixedly connected to a first connecting rod, the outer walls of one end of the two first connecting rods are fixedly connected to the second connecting rods, the bottoms of the two second connecting rods are fixedly connected to pins, the first gear is located at the top of the intermediate support body, the first gear is meshed with the second gear, and the bottom of the threaded sleeve has a ring that limits it to the intermediate support body.

[0015] Through the above technical scheme, when the engine body is installed and the cleaning position needs to be changed, the limiting mechanism can be retracted during the cleaning of the engine body to improve its limiting position. At the same time, after the flipping is completed, the stability of the engine body can be guaranteed. Specifically, the motor at the bottom of the intermediate support body is started to drive the first gear at the drive shaft end to rotate, and then drive the threaded sleeve at the bottom of the second gear to rotate. At this time, the extrusion block at the bottom of the threaded rod inside the threaded sleeve moves downward until the engine body is squeezed. At the same time, with the rotation of the second gear, the two racks will be driven to move toward the middle end, and then the first connecting rod and the second connecting rod will be driven to move toward the middle. Then the pin at the other end of the second connecting rod will pass through the bearing mounting plate and insert into the holes on the rear end mounting plate and the front end mounting plate of the body. Then the body is fixed, and the parts of the body that need to be cleaned are manually cleaned according to the process requirements. The pin is repeatedly removed, the body is flipped back to its original position, and it continues to flow downward until the engine body is cleaned.

[0016] A cleaning method for a fixed-point local cleaning device outside an engine body flip line comprises the following steps:

[0017] Step 1: The operator needs to ensure that the engine body or parts are stable and safe at the fixed point outside the flip line, and fix the two bearing mounting plates to the two sides of the crossbeam through two spacers and use the crossbeam locking nuts to build the overall frame, and then use the crane's connecting device to connect the hook plate composed of the fixing sleeve and the lifting ring assembly on the crossbeam;

[0018] Step 2: Then place the engine body between the rear mounting plate and the front mounting plate of the body. At this time, use multiple flat washers, spring washers and mounting plate bolts to connect with the position holes on the body. Then start the crane to lift the body to a suitable position. At this time, use the shaft body to drive the rear mounting plate and the front mounting plate of the body to rotate, and then turn the body over until the center of the cylinder hole of the body is parallel to the ground or a position that is easy for people to operate;

[0019] Step three: When the position of the engine body is adjusted, start the motor at the bottom of the intermediate support body to drive the first gear at the drive shaft end to rotate, and then drive the threaded sleeve at the bottom of the second gear to rotate. At this time, the extrusion block at the bottom of the threaded rod inside the threaded sleeve moves downward until the engine body is extruded. At the same time, with the rotation of the second gear, the two racks will be driven to move toward the middle end, and then the first connecting rod and the second connecting rod will be driven to move toward the middle. Then the pin at the other end of the second connecting rod will pass through the bearing mounting plate and insert into the holes on the rear end mounting plate and the front end mounting plate of the body. Then fix the body, manually clean the parts of the body that need to be cleaned according to the process requirements, repeatedly remove the pin, turn the body back to its original position, and continue to flow downward until the engine body is cleaned.

[0020] The beneficial effects of the present invention are as follows: (1) The present invention designs a lifting mechanism, a flipping mechanism, a fixing mechanism and a limiting mechanism. During the cleaning process of the engine body, the engine body can be fixed according to the hole position of the engine body and then cleaned, so that the engine can be cleaned before assembly. In addition, when the engine body is moved during the cleaning process, mechanical control can be adopted to reduce manual participation, ensure the cleaning efficiency, and at the same time ensure the stability of the engine body during cleaning; (2) The present invention designs a lifting mechanism. When cleaning the engine body, the height and cleaning position can be selected by lifting the cleaning device, thereby ensuring the cleaning efficiency. The comfort level during washing is improved, and the washing efficiency is greatly improved; (3) The present invention can fix the engine body by designing a flipping mechanism, a fixing mechanism and a limiting mechanism, and ensure the stability of the engine body during washing through the special hole positions. At the same time, a through hole matching the crossbeam is opened at the upper end of the bearing mounting plate, which is a transition fit, and a stepped hole matching the bearing is opened at the lower end, which is an interference fit. A pin hole is opened in the middle, which is a clearance fit, so that the cleaning device can adapt to a wider range of needs and be assembled faster with the engine body, and when flipping, mechanical matching can be adopted, and at the same time, the engine body can be ensured to be more stable during washing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0022] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0023] Figure 3 is a schematic diagram of a three-dimensional structure of the present invention from a second viewing angle;

[0024] Figure 4 It is the front view of the present invention;

[0025] Figure 5 is a cross-sectional view of the turnover mechanism of the present invention;

[0026] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0027] Figure 7 yes Figure 5 A partial enlarged view of point C in the middle;

[0028] Figure 8 is a cross-sectional view of the lifting mechanism of the present invention;

[0029] Fig. 9 yes Figure 8 A partial enlarged view of point D in the middle.

[0030] 1. intermediate support body; 2. bearing mounting plate; 3. lifting mechanism; 301. crossbeam body; 302. fixing sleeve; 303. lifting ring assembly; 304. hook plate; 305. spacer; 306. crossbeam locking nut; 4. shaft body; 5. flipping mechanism; 501. rear end mounting plate of machine body; 502. front end mounting plate of machine body; 503. bearing retaining ring; 504. radial bearing; 505. semicircular key; 506. locking nut of machine body mounting plate; 6. fixing mechanism; 601. plane washer; 602. spring washer; 603. mounting plate bolt; 7. limiting mechanism; 701. motor; 702. first gear; 703. threaded sleeve; 704. second gear; 705. threaded rod; 706. extrusion block; 707. rack; 708. first connecting rod; 709. second connecting rod; 710. latch. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] like Figure 1-Figure 9As shown, an engine body flip line outside fixed-point local cleaning device of this embodiment includes an intermediate support body 1, bearing mounting plates 2 are fixedly connected on both sides of the intermediate support body 1, and a lifting mechanism 3 is installed on the top of the two bearing mounting plates 2. The lifting mechanism 3 includes a crossbeam body 301 fixedly connected to the inside of the two bearing mounting plates 2, a fixing sleeve 302 is fixedly connected to the middle end of the outer wall of the crossbeam body 301, a lifting ring assembly 303 is fixedly connected to the top of the fixing sleeve 302, and a hook plate 304 is fixedly connected to the outer wall of the lifting ring assembly 303, and spacers 305 are slidably connected to both sides of the outer wall of the crossbeam body 301, and one side of the two spacers 305 is rotatably connected to the crossbeam locking nut 306, and the two spacers 305 and the crossbeam lock nut 306 are rotatably connected. The tightening nuts 306 are all located on the outside of the corresponding bearing mounting plates 2. When in use, a crane is used to connect with the lifting mechanism 3 so that the engine body can reach the required position during cleaning, and the engine body can be changed with the changes of different operators during cleaning, making cleaning more convenient. Specifically, the two bearing mounting plates 2 are respectively connected to the two sides of the crossbeam body 301 through two spacers 305 and fixed with the crossbeam locking nuts 306 to build an overall frame, and then the connecting device of the crane is used to connect the hook plate 304 composed of the fixing sleeve 302 and the lifting ring assembly 303 on the crossbeam body 301, so that the cleaning device can be smoothly lifted, which is more convenient to use.

[0033] like Figure 3 and Figure 7As shown, the bottom of the two bearing mounting plates 2 are both rotatably connected to the shaft body 4, and the opposite sides of the two shaft bodies 4 are installed with a flip mechanism 5, and the flip mechanism 5 includes a body rear end mounting plate 501 movably connected to one end of the outer wall of one of the shaft bodies 4, and one end of the outer wall of the other shaft body 4 is movably connected to the body front end mounting plate 502, and the other ends of the outer walls of the two shaft bodies 4 are fixedly connected to bearing retaining rings 503, and one side of the two bearing retaining rings 503 is provided with a radial bearing 504, and one side of the outer wall of the two shaft bodies 4 is provided with a semicircular key 505, and one side of the outer wall of the two shaft bodies 4 is provided with The body mounting plate locking nut 506, the two radial bearings 504 are respectively fixedly connected to the corresponding bearing mounting plate 2, the outer walls of the two shaft bodies 4 are fixedly connected to the corresponding radial bearings 504, the two semicircular keys 505 and the body mounting plate locking nut 506 are respectively located inside the corresponding body rear end mounting plate 501 and the body front end mounting plate 502. Before cleaning the engine body, the cleaning device is installed using the flip mechanism 5, and the fixed angle and the hole position with the engine body are matched strictly and rigorously through special hole positions to ensure that the cleaning is more The invention is convenient and quick. Specifically, the two shaft bodies 4 are connected with the corresponding bearing mounting plates 2, the rear end mounting plates 501 of the engine body and the front end mounting plates 502 of the engine body by using the radial bearing 504. At the same time, the radial bearing 504, the semicircular key 505 and the engine body mounting plate locking nut 506 are used to connect the two. While ensuring rotation, it is not easy to fall off. Then the engine body is placed between the rear end mounting plates 501 of the engine body and the front end mounting plates 502 of the engine body. At this time, multiple plane washers 601, spring washers 602 and mounting plate bolts 603 are used to connect with the engine body. The positioning holes on the machine body are connected, and then the crane is started to lift the machine body to a suitable position. At this time, the shaft body 4 is used to drive the rear end mounting plate 501 of the machine body and the front end mounting plate 502 of the machine body to rotate. The upper end of the bearing mounting plate 2 is provided with a through hole matching the crossbeam, which is a transition fit, and the lower end is provided with a stepped hole matching the bearing, which is an interference fit. The middle part is provided with a pin 710 hole, which is a clearance fit. A bearing retaining ring groove is provided at one end of the shaft body 4, and a convex circle, a thread and a cotter pin hole are provided at the other end. The center of the shaft is concentric with the center of the machine crankshaft, so as to meet the needs of wider adaptation and faster assembly.

[0034] like Figure 2As shown, the inner wall of the flip mechanism 5 is installed with a fixing mechanism 6, and the fixing mechanism 6 includes a plurality of plane washers 601 movably connected to the surfaces of the corresponding rear end mounting plate 501 and the front end mounting plate 502 of the body, a spring washer 602 is arranged on one side of the plurality of plane washers 601, and mounting plate bolts 603 are arranged inside the plurality of plane washers 601 and the spring washer 602. When the engine body is placed in the cleaning device, the fixing mechanism 6 is used to fix the engine body. The screw holes of the rear end mounting plate 501 and the front end mounting plate 502 of the body are designed according to the front and rear ends of the body to install the gear chamber and the flywheel housing. Corresponding through holes, the lower part of the rear end mounting plate 501 and the front end mounting plate 502 of the body have a makeshift hole of the shaft body 4, which makes the cleaning device more applicable to cleaning. Specifically, the engine body is then placed between the rear end mounting plate 501 of the body and the front end mounting plate 502 of the body. At this time, multiple flat washers 601, spring washers 602 and mounting plate bolts 603 are used to connect with the positioning holes on the body, and then the crane is started to lift the body to a suitable position. At this time, the shaft body 4 is used to drive the rear end mounting plate 501 of the body and the front end mounting plate 502 of the body to rotate, and then the body is flipped over.

[0035] like Figure 3 and Figure 8-Figure 9As shown, a limiting mechanism 7 is installed on the top of the intermediate support body 1, and the limiting mechanism 7 includes a motor 701 fixedly connected to the bottom of the intermediate support body 1, and the driving shaft end of the motor 701 is fixedly connected to a first gear 702, and the inner wall of the intermediate support body 1 is rotatably connected to a threaded sleeve 703, and the top of the threaded sleeve 703 is fixedly connected to a second gear 704, and the inner wall of the threaded sleeve 703 is threadedly connected to a threaded rod 705, and the bottom of the threaded rod 705 is fixedly connected to an extrusion block 706, and the outer wall of the second gear 704 is meshed with two racks 707, one side of the two racks 707 is fixedly connected to the first connecting rod 708, the outer wall of one end of the two first connecting rods 708 is fixedly connected to the second connecting rod 709, the bottom of the two second connecting rods 709 is fixedly connected to the latch 710, the first gear 702 is located at the top of the intermediate support body 1, the first gear 702 is meshed with the second gear 704, the bottom of the threaded sleeve 703 has a ring and is limited to the intermediate support body 1. When the engine body is installed and the cleaning position needs to be changed, the limiting mechanism 7 can be used to limit the engine The engine body is shrunk during cleaning to improve its limit position. At the same time, after the flipping is completed, the stability of the engine body can be guaranteed. Specifically, the motor 701 at the bottom of the intermediate support body 1 is started to drive the first gear 702 at the drive shaft end to rotate, and then the threaded sleeve 703 at the bottom of the second gear 704 is driven to rotate. At this time, the extrusion block 706 at the bottom of the threaded rod 705 inside the threaded sleeve 703 moves downward until the engine body is squeezed. At the same time, with the rotation of the second gear 704, the two racks 707 will be driven to move toward the middle end, and then the first connecting rod 708 and the second connecting rod 709 will be driven to move toward the middle. Then the pin 710 at the other end of the second connecting rod 709 will pass through the bearing mounting plate 2 and insert into the holes on the rear end mounting plate 501 of the body and the front end mounting plate 502 of the body. Then the body is fixed, and the parts of the body that need to be cleaned are manually cleaned according to the process requirements. The pin 710 is repeatedly removed, the body is flipped back to its original position, and it continues to flow downward until the engine body is cleaned.

[0036] A cleaning method for a fixed-point local cleaning device outside an engine body flip line comprises the following steps:

[0037] Step 1: The operator needs to ensure that the engine body or parts are stable and safe at the fixed point outside the flip line, and fix the two bearing mounting plates 2 to the two sides of the crossbeam body 301 through two spacers 305 and use the crossbeam locking nuts 306 to build the overall frame, and then use the crane's connecting device to connect the hook plate 304 composed of the fixing sleeve 302 and the lifting ring assembly 303 on the crossbeam body 301;

[0038] Step 2: Then place the engine body between the rear mounting plate 501 and the front mounting plate 502. At this time, use multiple flat washers 601, spring washers 602 and mounting plate bolts 603 to connect with the position holes on the body. Then start the crane to lift the body to a suitable position. At this time, use the shaft body 4 to drive the rear mounting plate 501 and the front mounting plate 502 to rotate, and then turn the body over until the center of the cylinder hole of the body is parallel to the ground or in a position that is easy for people to operate;

[0039] Step 3: When the position of the engine body is adjusted, the motor 701 at the bottom of the intermediate support body 1 is started to drive the first gear 702 at the drive shaft end to rotate, and then the threaded sleeve 703 at the bottom of the second gear 704 is driven to rotate. At this time, the extrusion block 706 at the bottom of the threaded rod 705 inside the threaded sleeve 703 moves downward until the engine body is squeezed. At the same time, with the rotation of the second gear 704, the two racks 707 will be driven to move toward the middle end, and then the first connecting rod 708 and the second connecting rod 709 will be driven to move toward the middle. Then the pin 710 at the other end of the second connecting rod 709 will pass through the bearing mounting plate 2 and insert into the holes on the rear end mounting plate 501 and the front end mounting plate 502 of the body. Then the body is fixed, and the parts of the body that need to be cleaned are manually cleaned according to the process requirements. The pin 710 is repeatedly removed, the body is turned back to its original position, and it continues to flow downward until the engine body is cleaned.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An engine body off-line fixed-point local cleaning device, comprising an intermediate support body (1), characterized in that: The two sides of the intermediate support body (1) are fixedly connected with bearing mounting plates (2), and the tops of the two bearing mounting plates (2) are equipped with lifting mechanisms (3); The bottoms of the two bearing mounting plates (2) are both rotatably connected to shaft bodies (4), and opposite sides of the two shaft bodies (4) are both installed with turning mechanisms (5); The inner wall of the turning mechanism (5) is installed with a fixing mechanism (6), and the top of the intermediate support body (1) is installed with a limiting mechanism (7).

2. The engine body off-line fixed-point local cleaning device according to claim 1 is characterized in that: The lifting mechanism (3) comprises a crossbeam body (301) fixedly connected to the inside of two bearing mounting plates (2); a fixing sleeve (302) is fixedly connected to the middle end of the outer wall of the crossbeam body (301); a lifting ring assembly (303) is fixedly connected to the top of the fixing sleeve (302); a hook plate (304) is fixedly connected to the outer wall of the lifting ring assembly (303); both sides of the outer wall of the crossbeam body (301) are slidably connected to spacers (305); and one side of the two spacers (305) is rotatably connected to a crossbeam locking nut (306).

3. The engine body off-line fixed-point local cleaning device according to claim 2 is characterized in that: The two spacers (305) and the crossbeam locking nut (306) are both located outside the corresponding bearing mounting plate (2).

4. The engine body off-line fixed-point local cleaning device according to claim 1, characterized in that: The flip mechanism (5) comprises a body rear end mounting plate (501) movably connected to one end of the outer wall of one of the shaft bodies (4); one end of the outer wall of the other shaft body (4) is movably connected to the body front end mounting plate (502); the other ends of the outer walls of the two shaft bodies (4) are fixedly connected to bearing retaining rings (503); one side of the two bearing retaining rings (503) is provided with a radial bearing (504); one side of the outer walls of the two shaft bodies (4) is provided with a semicircular key (505); and one side of the outer walls of the two shaft bodies (4) is provided with a body mounting plate locking nut (506).

5. The engine body off-line fixed-point local cleaning device according to claim 4 is characterized in that: The two radial bearings (504) are respectively fixedly connected to the inside of the corresponding bearing mounting plates (2), the outer walls of the two shaft bodies (4) are fixedly connected to the corresponding radial bearings (504), and the two semicircular keys (505) and the machine body mounting plate locking nuts (506) are respectively located inside the corresponding machine body rear end mounting plate (501) and machine body front end mounting plate (502).

6. The engine body off-line fixed-point local cleaning device according to claim 5, characterized in that: The fixing mechanism (6) comprises a plurality of planar washers (601) movably connected to the surfaces of the corresponding rear end mounting plate (501) and the front end mounting plate (502) of the machine body, a spring washer (602) is provided on one side of the plurality of planar washers (601), and mounting plate bolts (603) are provided inside the plurality of planar washers (601) and the spring washers (602).

7. The engine body off-line fixed-point local cleaning device according to claim 1, characterized in that: The limiting mechanism (7) comprises a motor (701) fixedly connected to the bottom of the intermediate support body (1); the driving shaft end of the motor (701) is fixedly connected to a first gear (702); the inner wall of the intermediate support body (1) is rotatably connected to a threaded sleeve (703); the top of the threaded sleeve (703) is fixedly connected to a second gear (704); the inner wall of the threaded sleeve (703) is threadedly connected to a threaded rod (705); the bottom of the threaded rod (705) is fixedly connected to an extrusion block (706); the outer wall of the second gear (704) is meshed with two racks (707); one side of the two racks (707) is fixedly connected to a first connecting rod (708); the outer walls of one end of the two first connecting rods (708) are fixedly connected to a second connecting rod (709); and the bottoms of the two second connecting rods (709) are fixedly connected to a latch (710).

8. The engine body off-line fixed-point local cleaning device according to claim 7, characterized in that: The first gear (702) is located at the top of the intermediate support body (1), the first gear (702) is meshed with the second gear (704), and a ring is provided at the bottom of the threaded sleeve (703) to limit the position of the threaded sleeve (703) with the intermediate support body (1).

9. The cleaning method of the engine body off-line fixed-point local cleaning device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: The operator needs to ensure that the engine body or parts are stable and safe at the fixed point outside the flip line, and fix the two bearing mounting plates (2) to the two sides of the crossbeam (301) through two spacers (305) and use the crossbeam locking nuts (306) to build an overall frame, and then use the connecting device of the crane to connect the hook plate (304) composed of the fixing sleeve (302) and the lifting ring assembly (303) on the crossbeam (301); Step 2: The engine body is then placed between the rear mounting plate (501) and the front mounting plate (502). At this time, a plurality of flat washers (601), spring washers (602) and mounting plate bolts (603) are used to connect with the position holes on the body. Then, the crane is started to lift the body to a suitable position. At this time, the shaft body (4) is used to drive the rear mounting plate (501) and the front mounting plate (502) of the body to rotate. Then, the body is turned over until the center of the cylinder hole of the body is parallel to the ground or a position that is easy for people to operate. Step 3: After the position of the engine body is adjusted, the motor (701) at the bottom of the intermediate support body (1) is started to drive the first gear (702) at the end of the drive shaft to rotate, and then the threaded sleeve (703) at the bottom of the second gear (704) is driven to rotate. At this time, the extrusion block (706) at the bottom of the threaded rod (705) inside the threaded sleeve (703) moves downward until the engine body is squeezed. At the same time, as the second gear (704) rotates, it will drive the two racks (707 ) moves toward the middle end, and then drives the first connecting rod (708) and the second connecting rod (709) to move toward the middle, and then the pin (710) at the other end of the second connecting rod (709) passes through the bearing mounting plate (2) and is inserted into the holes on the rear end mounting plate (501) and the front end mounting plate (502) of the engine body, and then the engine body is fixed, and the parts of the engine body that need to be cleaned are manually cleaned according to the process requirements, and the pin (710) is repeatedly removed, and the engine body is turned back to its original position, and the flow continues downward until the engine body is cleaned.

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