Multi-scene application multifunctional modular diesel engine hoisting device

Abstract

The utility model relates to a multi-scene application multifunctional modular diesel engine hoisting device belongs to engine technical field. The hoisting device adopts modular design, utilizes lever principle, assists other buffer measures, ensures that diesel engine is safely and smoothly transferred, realizes that the hoisting device of hanging diesel engine can rotate or fix, and fast butt joint flows and transfers, has solved the problem that different structure diesel engine needs different hoisting device when transferring, satisfies the hoisting demand of 2-4 hoisting point diesel engine, can realize engine real -time rotation, fixed etc. according to different scenes, the modular combination of diesel engine hoisting device is favorable to quick replacement maintenance, has reduced production manufacturing cost, effectively improved work efficiency. Satisfies the accurate transfer requirement of front and rear two hoisting point diesel engine, realizes the functional requirement of safe transfer, accurate butt joint. Meanwhile aiming at damaged hoisting device, can according to the quick replacement or maintenance of damaged module, reduce production manufacturing cost.

Description

Technical Field

[0001] This invention belongs to the field of engine technology and relates to a lifting device for a two-point diesel engine, and more particularly to a multi-functional modular diesel engine lifting device for multiple application scenarios. Background Technology

[0002] As is well known, diesel engines are crucial power sources for mobile machinery and many non-mobile machines. They are characterized by their large weight, precise structure, and irregular shape. Throughout the entire process, from warehousing and assembly to later testing and finishing, safe, efficient, and damage-free hoisting and transportation are fundamental guarantees for ensuring production rhythm, product quality, and personnel safety. Therefore, specialized hoisting tools for lifting and transporting diesel engines have become indispensable tooling equipment on the production line.

[0003] Currently, the diesel engine transfer and lifting devices widely used in existing technologies suffer from a series of problems that urgently need to be addressed. First, they lack versatility. Various diesel engine models differ significantly in size, weight, lifting point location, and structure. Factories often need to equip different engine models with specialized lifting tools, which not only increases tooling manufacturing costs and management complexity but also leads to inconvenient production line switchovers and low efficiency in today's era of flexible and mixed-flow production.

[0004] Secondly, there are also many safety hazards. Many traditional lifting devices use rigid connections or simple wire rope winding methods, which make it difficult to ensure that the engine remains level and stable during lifting and transportation, and are prone to tilting and swaying. This may not only cause damage to the machined surfaces or external accessories of the diesel engine, but also pose a threat to the safety of the operators below, thus bringing the risk of falling objects from height.

[0005] The State Intellectual Property Office of China granted a utility model patent entitled "A Lifting Device for Automobile Engine Assembly" on January 25, 2022. The patent number is ZL 2021217172551, the authorization announcement number is CN215626175U, the classification number is B66C1 / 30(2006.01), and the application date is July 27, 2021. This utility model discloses a lifting device for an automobile engine assembly, comprising: a lifting frame and an engine assembly; teeth are provided on the top surface of the lifting frame; a motor is fixedly installed on one side of the lifting frame, and a lead screw is fixedly connected to the output end of the motor. The lead screw is rotatably connected to the inner side of the lifting frame, and a movable plate is slidably sleeved on the outer side of the lead screw. Gears are installed on both sides of the movable plate, and the gears mesh with the teeth; a mounting frame is fixedly installed at the bottom of the movable plate, and a clamping component for clamping the engine assembly is installed inside the mounting frame. A sliding groove is provided at the bottom of the mounting frame. This utility model clamps the engine assembly by setting a clamping component inside the mounting frame and driving the lifting plate to descend through a hydraulic rod, so that the lower end of the swing arm cooperates with the sliding plate and closes inward. A clamp is connected to the bottom of the sliding plate, and the clamp moves with the sliding plate.

[0006] Another utility model patent, "An Engine and Gearbox Powertrain Lifting Equipment," was granted by the State Intellectual Property Office on March 4, 2022. The patent number is ZL 2021216074443, and the authorization announcement number is CN215946477U. The classification number is B66C1 / 12 (2006.01); the application date is July 15, 2021. This utility model discloses an engine and transmission powertrain hoisting equipment, including: a frame assembly, a hoisting point adjustment device, a hoisting chain, a flexible lifting device, and a transmission protection device; the flexible lifting device is flexibly connected to the frame assembly, and its upper end is used to connect to an electric hoist; multiple hoisting point adjustment devices are movably connected to the frame assembly, and the hoisting point adjustment devices can be freely adjusted and locked in position along the length direction of the frame assembly; one end of the hoisting chain is suspended from the hoisting point adjustment device, and the suspension position of the hoisting chain is adjustable, while the other end of the hoisting chain is used to connect to the engine and transmission powertrain; the transmission protection device is connected to the hoisting chain. This utility model adopts a three-point hoisting method, with the first two points using the engine's own hoisting points, and the last hoisting point supporting the bottom of the transmission, adapting to engines with long axial lengths, such as engines with retarders.

[0007] There are various types of engine hoisting devices in the aforementioned existing technologies. With the transformation and upgrading of my country's non-road machinery equipment industry, especially the agricultural machinery industry, towards high-end, intelligent, and green production, and the in-depth implementation of lean manufacturing concepts, higher requirements are being placed on every detail of the production process. This is not only necessary to improve the efficiency and safety of single-point operations, but also a crucial link in breaking through production bottlenecks, optimizing logistics processes, reducing overall operating costs, and promoting the advancement of intelligent manufacturing of diesel engines. This project was born out of this context, and its successful implementation will have significant practical implications for enhancing the core competitiveness of enterprises. Summary of the Invention

[0008] The purpose of this invention is to provide a compact, easy-to-operate, safe, and reliable multi-functional modular diesel engine hoisting device and its usage method for various scenarios. This addresses the hoisting needs of two-point diesel engines with different structures in different scenarios. It not only solves the safety and reliability requirements for hoisting diesel engines of different structures but also meets the requirements for rapid docking of diesel engines with other devices. Furthermore, the modular structure facilitates the repair and replacement of faulty modules, avoiding the problem of complete scrapping due to partial damage, and effectively reducing production costs.

[0009] To achieve the above objectives, the technical solution adopted by this invention is: a multi-functional modular diesel engine lifting device for multiple scenarios, comprising: a crossbeam connecting bolt assembly, a positioning screw, a crossbeam unit, a spring, a lever connecting bolt assembly, a lever, a pull rope, a pad assembly, a limit pin assembly, a lifting beam unit, a Y-type lifting chain, a spring reduction controller, and a safety rope. The crossbeam connecting bolt assembly connects the crossbeam unit to external equipment; the positioning screw connects the crossbeam unit and is fastened to the surface of the external equipment; the spring reduction controller is installed in the crossbeam unit; the pad assembly is fixedly installed below the spring reduction controller; the spring connects the crossbeam unit and the lever; the lever connecting bolt assembly connects to the lever; the pull rope connects to the lever; the limit pin assembly is installed on the crossbeam unit and placed on the lever; the lifting beam unit is suspended on the rotating hook of the crossbeam unit; the Y-type lifting chain is suspended on the chain suspension plate of the lifting beam unit; and the safety rope secures the crossbeam unit and the lifting beam unit together.

[0010] The crossbeam connecting bolt assembly includes: a first reamed hole bolt, a first flat washer, a first flower nut, and a first cotter pin; the first reamed hole bolt passes through the hole in the fixed connecting plate on the crossbeam unit, and the first flat washer and the first flower nut are installed in sequence. After tightening, the first cotter pin passes through the machined hole of the first reamed hole bolt, with its tail forked open.

[0011] The crossbeam unit includes: a fixed connecting plate, a main channel steel, a spring reduction controller sleeve, a lever fixing plate, a limit pin sleeve, and a rotating hook. The fixed connecting plate is fixed to the outside of the web of the main channel steel, the two spring reduction controller sleeves are fixed to the web portions at both ends of the main channel steel, the lever fixing plate is fixed to the web portion on one side of the main channel steel, the lever fixing plate is fixed to the lower edge of the limit pin sleeve, and the rotating hook is fixed to the center of the main channel steel. A lever connecting bolt assembly is connected to the lever fixing plate.

[0012] The lever connecting bolt assembly includes: a second reamed hole bolt, a second flat washer, a second flower nut, and a second cotter pin; the second reamed hole bolt passes through the round hole of the lever fixing plate on the crossbeam unit, and the lever, and the second flat washer and the second flower nut are installed in sequence. After tightening, the second cotter pin passes through the machined hole of the second reamed hole bolt, and the tail is forked open.

[0013] The pad assembly includes: a hexagonal screw, a third flower nut, a third cotter pin, and a pad; the hexagonal screw passes through the round hole of the pad, the third flower nut is installed, and after tightening, the third cotter pin passes through the machined hole of the hexagonal screw, with the tail forked open.

[0014] The limiting pin assembly includes a limiting pin and a stud. A threaded hole is provided in the middle of the limiting pin. One end of the stud is screwed into the threaded hole, and the other end rests on the lever. The limiting hole of the lifting beam unit cooperates with the limiting pin of the limiting pin assembly.

[0015] The lifting beam unit includes: a crossbeam, limiting holes, a crossbeam fixing plate, an auxiliary reinforcing plate, a chain suspension plate, and a U-shaped ring; the crossbeam and the crossbeam fixing plate are fixed together, a U-shaped ring is connected and fixed at the middle position above the crossbeam fixing plate, limiting holes are fixed on both sides above the crossbeam, a chain suspension plate is fixed in the direction perpendicular to the crossbeam, and an auxiliary reinforcing plate is installed at each right-angle connection position.

[0016] The present invention achieves the following positive effects by adopting the above technical solution: The present invention adopts a modular design, which is compact, easy to operate, stable and reliable. It solves the problem that different lifting devices are required for the transfer of diesel engines with different structures. It can meet the lifting requirements of diesel engines with 2-4 lifting points. At the same time, according to different scenarios, it can realize the requirements of real-time engine rotation and fixation. The modular combination of diesel engine lifting devices is conducive to rapid replacement and maintenance, reduces production and manufacturing costs, and effectively improves work efficiency. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a multi-functional modular diesel engine hoisting device for multiple application scenarios according to the present invention;

[0018] Figure 2 This is a structural schematic diagram of the crossbeam connecting bolt assembly of a multi-scenario application, multi-functional modular diesel engine hoisting device according to the present invention;

[0019] Figure 3 This is a schematic diagram of the crossbeam unit structure of a multi-functional modular diesel engine hoisting device for multiple scenarios according to the present invention;

[0020] Figure 4 This is a right-side structural schematic diagram of the crossbeam unit of a multi-scenario application, multi-functional modular diesel engine hoisting device according to the present invention.

[0021] Figure 5 This is a schematic diagram of the structure of the pad assembly of a multi-functional modular diesel engine hoisting device for multiple scenarios according to the present invention;

[0022] Figure 6 This is a top view of the pad assembly of a multi-scenario application, multi-functional modular diesel engine hoisting device according to the present invention;

[0023] Figure 7 This is a partial cross-sectional view of the limiting pin assembly of a multi-scenario application, multi-functional modular diesel engine hoisting device according to the present invention.

[0024] Figure 8 This is a schematic diagram of the lever connection bolt assembly of a multi-functional modular diesel engine hoisting device for multiple scenarios according to the present invention;

[0025] Figure 9 This is a schematic diagram of the lever structure of a multi-scenario application, multi-functional modular diesel engine hoisting device according to the present invention;

[0026] Figure 10 This is a schematic diagram of the lifting beam unit of a multi-scenario application, multi-functional modular diesel engine lifting device according to the present invention;

[0027] Figure 11 for Figure 10 A schematic diagram of the structure along direction A;

[0028] Figure 12 for Figure 10 A schematic diagram of the B-direction structure.

[0029] In the diagram: 1. Crossbeam connecting bolt assembly, 2. Positioning screw, 3. Crossbeam unit, 4. Spring, 5. Lever connecting bolt assembly, 6. Lever, 7. Pull rope, 8. Pad assembly, 9. Limit pin assembly, 10. Lifting beam unit, 11. Y-type lifting chain, 12. Spring reduction controller, 13. Safety rope; 1.1. First reamed hole bolt, 1.2. First flat washer, 1.3. First flower nut, 1.4. First cotter pin; 3.1. Fixed connecting plate, 3.2. Main channel steel, 3.3. Spring reduction controller sleeve, 3.4. Lever fixing plate, 3.5. Limit pin sleeve, 3.6. Rotating hook; 5.1. Second reamed hole bolt, 5.2. Second flat washer, 5.3. Second flower nut, 5.4. Second cotter pin; 8.1. Hex socket screw, 8.2. Third flower nut, 8.3. 8.4. Cotter pin; 9.1. Limit pin; 9.2. Stud; 10.1. Crossbeam; 10.2. Limit hole; 10.3. Crossbeam fixing plate; 10.4. Auxiliary reinforcing plate; 10.5. Hanging chain suspension plate; 10.6. U-shaped ring. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiments. Figure 1-12 .

[0031] like Figure 1 As shown, a multi-functional modular diesel engine hoisting device for multiple scenarios includes: a crossbeam connecting bolt assembly 1, a positioning screw 2, a crossbeam unit 3, a spring 4, a lever connecting bolt assembly 5, a lever 6, a pull rope 7, a pad assembly 8, a limit pin assembly 9, a lifting beam unit 10, a Y-type lifting chain 11, a spring reduction controller 12, and a safety rope 13. The crossbeam connecting bolt assembly 1 connects the crossbeam unit 3 to external equipment. The main channel steel of the crossbeam unit 3 has threaded holes. The positioning screw 2 connects the crossbeam unit 3 from bottom to top until its end face touches the drive equipment. The positioning screw 2 mainly relies on the friction between the screw end face and the drive equipment surface to limit the horizontal displacement of the crossbeam unit 3, thereby preventing the hoisting device with the hoisted diesel engine from moving back and forth in the horizontal direction during aerial operation. The spring reduction controller 12 is installed in the crossbeam unit 3, and the pad assembly 8 is fixedly installed below the spring reduction controller 12; the spring 4 connects the crossbeam unit 3 and the lever 6, the lever connecting bolt assembly 5 is connected to the lever 6, the pull rope 7 connects the lever 6, the limit pin assembly 9 is installed on the crossbeam unit 3 and placed on the lever 6; the lifting beam unit 10 is suspended on the rotating hook of the crossbeam unit 3, the Y-shaped lifting chain 11 is suspended on the lifting chain suspension plate of the lifting beam unit 10, and the safety rope 13 fixes the crossbeam unit 3 and the lifting beam unit 10 together.

[0032] In this embodiment, for the diesel engine with two lifting points (front and rear), each lifting point uses a Y-shaped lifting chain. Each Y-shaped lifting chain has three hooks; one hook suspends the diesel engine, and the other two hooks are suspended from the holes in the chain suspension plate 10.5 of the lifting beam unit 10, according to the center of gravity of the diesel engine. This ensures that the center of gravity of the diesel engine and the rotating hook 3.6 are kept in a vertical line. The spring reduction controller 12 in this embodiment is composed of a high-torque spring. The safety rope 13 binds the crossbeam unit 3 and the lifting beam unit 10 together, achieving double protection to prevent the lifted diesel engine from falling if the rotating hook 3.6 of the crossbeam unit 3 detaches.

[0033] like Figure 2 As shown, the crossbeam unit 3 connects to the external equipment. The first reamed hole bolt 1.1 in the crossbeam connecting bolt assembly 1 passes through the hole on the fixed connecting plate 3.1 on the crossbeam unit 3. Then, the first flat washer 1.2 and the first flower nut 1.3 are installed in sequence. After tightening, the first cotter pin 1.4 passes through the machined hole of the first reamed hole bolt 1.1, with its tail forked open. After installation, it can serve the purpose of connecting the diesel engine hoisting device to the electromechanical equipment.

[0034] like Figure 3 and Figure 4 As shown, the six sub-components of the crossbeam unit 3 are fixed together: the fixed connecting plate 3.1, the main channel steel 3.2, the spring reduction controller sleeve 3.3, the lever fixing plate 3.4, the limit pin sleeve 3.5, and the rotating hook 3.6. Among them, the spring reduction controller sleeve 3.3 mainly houses the spring reduction controller 12, the limit pin sleeve 3.5 mainly holds the limit pin assembly 9, and the rotating hook 3.6 can rotate 360 ​​degrees.

[0035] like Figure 5 and Figure 6 As shown, the pad assembly 8 consists of three hexagonal screws 8.1, three flower nuts 8.2, three cotter pins 8.3, and three pads 8.4. The pad assembly 8 is suspended below the spring reduction controller 12, mainly to reduce the distance between the crossbeam of the lifting beam unit 10 and the spring reduction controller 12, and further reduce the back-and-forth swing amplitude of the diesel engine during horizontal transport in the air.

[0036] like Figure 7 As shown, the limiting pin assembly 9 consists of a limiting pin 9.1 and a stud 9.2. A threaded hole is machined in a direction perpendicular to the axial direction of the limiting pin. One end of the stud 9.2 is threaded, and thread-locking adhesive is applied to the threaded portion of the stud 9.2 before it is screwed into the threaded hole on the limiting pin 9.1. A boss is machined at the other end of the stud 9.2.

[0037] like Figure 8As shown, the lever connecting bolt assembly 5 mainly consists of a second reamed bolt 5.1, a second flat washer 5.2, a second flower nut 5.3, and a second cotter pin 5.4. The second reamed bolt 5.1 passes through the round hole of the lever fixing plate 3.4 on the crossbeam unit 3, and then the lever 6. The second flat washer 5.2 and the second flower nut 5.3 are then installed sequentially and tightened. After tightening, the second cotter pin 5.4 passes through the machined hole of the second reamed bolt 5.1, with its tail forked. After connection, the lever 6 can rotate around the smooth rod of the second reamed bolt 5.1. The limiting pin assembly 9, which contacts one end of the lever 6, rises or falls with the rotation of the lever 6. One end of the stud 9.2 of the limiting pin assembly 9 has a boss to prevent the lever 6 from rotating too much and losing contact with the limiting pin assembly 9.

[0038] like Figure 9 The lever 6 shown is connected to the lever fixing plate 3.4 on the crossbeam unit 3 via the lever connecting bolt assembly 5. The lever 6 can rotate around the smooth rod. One end of the lever 6 is attached to the pull rope 7, and the stud 9.2 of the limit pin assembly 9 is placed on the cantilever of the other end of the lever 6. When the diesel engine reaches the predetermined position, the pull rope 7 is pulled down by lever principle. The limit pin of the limit pin assembly 9 at the other end of the lever 6 is lifted up from the limit hole of the lifting beam unit 10. The lower lifting beam unit 10, the Y-shaped lifting chain 11, and the suspended diesel engine can easily rotate their angles and easily connect with the diesel engine transfer equipment on the ground. Spring 4 connects lever 6 to crossbeam unit 3. When the multi-scenario application multi-functional modular diesel engine hoisting device hoists the diesel engine, the pull rope 7 is released. The spring will pull one end of lever 6 upward, and the limit pin 9.1 of the limit pin assembly 9 at the other end will fall into the limit hole 10.2 of the lifting beam unit 10, which serves as a mechanical limit to prevent the diesel engine from swinging significantly during horizontal transportation in the air.

[0039] like Figure 10 , Figure 11 and Figure 12As shown, the lifting beam unit 10 includes: a crossbeam 10.1, a limiting hole 10.2, a crossbeam fixing plate 10.3, an auxiliary reinforcing plate 10.4, a chain suspension plate 10.5, and a U-shaped ring 10.6. The lifting beam unit 10 serves as a connecting link; its U-shaped ring is suspended from the rotating hook 3.6 of the crossbeam unit 3, while the Y-shaped chain 11 is suspended from the hole in its chain suspension plate 10.5. For diesel engines of different lengths, the Y-shaped chain 11 can be positioned on different chain suspension plates 10.5. For longer diesel engines, it is preferable to use the chain suspension plates 10.5 at both ends; for shorter diesel engines, the middle chain suspension plate 10.5 can be used. Since the two lifting points of the diesel engine are installed at different positions, the center of gravity will also be significantly different. Based on the different center of gravity, the two hooks of the Y-shaped lifting chain 11 on each side are suspended in different holes of the same lifting chain suspension plate 10.5, which ultimately ensures that the center of gravity of the lifting device and the diesel engine are on the same vertical line, thereby improving the safety and reliability factor.

[0040] This diesel engine lifting device utilizes the lever principle. By applying a small force, the limiting pin is pried open or lowered through the limiting pin hole, allowing the lifting device to rotate or fix the diesel engine. Combined with other cushioning measures, it ensures the safe and stable transfer of the diesel engine. Upon arrival at its destination, it can be quickly docked and transferred. This multi-functional lifting device reduces the frequency of changing lifting devices and improves production efficiency. Furthermore, the addition of multiple suspension positions can meet the safe lifting requirements of diesel engines of different structures and sizes, demonstrating high compatibility.

[0041] This multi-functional, modular diesel engine lifting device, applicable to various scenarios, features a compact structure, reasonable layout, and high reliability. Suitable for lifting diesel engines ranging from 0.5 meters to 4 meters in length, it effectively meets the precise transfer requirements of diesel engines at both the front and rear lifting points, achieving safe transfer and precise docking, and significantly improving the transfer efficiency in the diesel engine production process. Furthermore, damaged lifting devices can be quickly replaced or repaired based on the damaged modules, reducing manufacturing costs. In practical applications, the device is not limited to the situations described in this embodiment; all technical solutions and improvements that do not depart from the essential content of this invention should fall within the scope of the claims of this invention.

Claims

1. A multi-functional modular diesel engine hoisting device for multiple application scenarios, comprising: The components include: a crossbeam connecting bolt assembly (1), a positioning screw (2), a crossbeam unit (3), a spring (4), a lever connecting bolt assembly (5), a lever (6), a pull rope (7), a pad assembly (8), a limit pin assembly (9), a lifting beam unit (10), a Y-type lifting chain (11), a spring reduction controller (12), and a safety rope (13); characterized in that: the crossbeam connecting bolt assembly (1) connects the crossbeam unit (3) to the external equipment, the positioning screw (2) connects the crossbeam unit (3) and fastens it to the surface of the external equipment, and the spring reduction controller (12) is installed on the crossbeam. In unit (3), the pad assembly (8) is fixedly installed below the spring reduction controller (12); the spring (4) connects the beam unit (3) and the lever (6), the lever connecting bolt assembly (5) is connected to the lever (6), the pull rope (7) connects the lever (6), the limit pin assembly (9) is installed on the beam unit (3) and placed on the lever (6); the lifting beam unit (10) is suspended on the rotating hook of the beam unit (3), the Y-shaped chain (11) is suspended on the chain suspension plate of the lifting beam unit (10), and the safety rope (13) connects the beam unit (3) and the lifting beam unit (10). The beam units (10) are fixed together; the crossbeam unit (3) includes: a fixed connecting plate (3.1), a main channel steel (3.2), a spring reduction controller sleeve (3.3), a lever fixing plate (3.4), a limiting pin sleeve (3.5), and a rotating hook (3.6); the fixed connecting plate (3.1) is fixed to the outside of the web of the main channel steel (3.2), the two spring reduction controller sleeves (3.3) are fixed to the inside of the web of the main channel steel (3.2), the limiting pin sleeve (3.5) is fixed to the inside of the web of the main channel steel (3.2), and the lever fixing plate (3.4) is fixed to the outside of the web of the main channel steel (3.2). At the lower edge of the limiting pin sleeve (3.5), the rotating hook (3.6) is fixed to the center of the main channel steel (3.2), and the lever connecting bolt assembly (5) is connected to the lever fixing plate (3.4); the limiting pin assembly (9) includes: a limiting pin (9.1) and a stud (9.2). The limiting pin (9.1) has a threaded hole horizontally provided in the middle position. One end of the stud (9.2) is screwed into the threaded hole, and the other end is placed on the lever (6). The limiting hole (10.2) of the lifting beam unit (10) is used in conjunction with the limiting pin (9.1) of the limiting pin assembly (9).

2. The multi-scenario application, multi-functional, modular diesel engine hoisting device according to claim 1, characterized in that: The crossbeam connecting bolt assembly (1) includes: a first reamed hole bolt (1.1), a first flat washer (1.2), a first flower nut (1.3), and a first cotter pin (1.4); the first reamed hole bolt (1.1) passes through the hole in the fixed connecting plate on the crossbeam unit (3), and the first flat washer (1.2) and the first flower nut (1.3) are installed in sequence. After tightening, the first cotter pin (1.4) passes through the machined hole of the first reamed hole bolt (1.1) and the tail is forked.

3. The multi-scenario application, multi-functional, modular diesel engine hoisting device according to claim 1, characterized in that: The lever connecting bolt assembly (5) includes: a second reamed hole bolt (5.1), a second flat washer (5.2), a second flower nut (5.3), and a second cotter pin (5.4); the second reamed hole bolt (5.1) passes through the round hole of the lever fixing plate (3.4) on the beam unit (3) and the lever (6), and the second flat washer (5.2) and the second flower nut (5.3) are installed in sequence. After tightening, the second cotter pin (5.4) passes through the machined hole of the second reamed hole bolt (5.1) and the tail is forked.

4. The multi-scenario application, multi-functional, modular diesel engine hoisting device according to claim 1, characterized in that: The pad assembly (8) includes: a hexagonal screw (8.1), a third flower nut (8.2), a third cotter pin (8.3), and a pad (8.4); the hexagonal screw (8.1) passes through the round hole of the pad (8.4), the third flower nut (8.2) is installed, and after tightening, the third cotter pin (8.3) passes through the machined hole of the hexagonal screw (8.1) and the tail is forked.

5. A multi-scenario application, multi-functional, modular diesel engine hoisting device according to claim 1, characterized in that: The lifting beam unit (10) includes: a crossbeam (10.1), a limiting hole (10.2), a crossbeam fixing plate (10.3), an auxiliary reinforcing plate (10.4), a chain suspension plate (10.5), and a U-shaped ring (10.6); the crossbeam (10.1) and the crossbeam fixing plate (10.3) are fixed together, a U-shaped ring (10.6) is connected and fixed at the middle position above the crossbeam fixing plate (10.3), the limiting holes (10.2) are fixed on both sides above the crossbeam (10.1), the chain suspension plate (10.5) is fixed in the direction perpendicular to the crossbeam (10.1), and an auxiliary reinforcing plate (10.4) is installed at each right-angle connection position.

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