Turnover device for engine body

Abstract

The invention relates to an engine assembly technology, and discloses an engine body turnover device. The device comprises a hoisting load-bearing part and a plurality of driving parts, the hoisting load-bearing part comprises a lower load-bearing cross beam, each driving part comprises a motor and a connecting seat slidably connected to the lower load-bearing cross beam, a motor shaft of each motor is connected with a belt pulley, the two ends of each motor shaft are connected with the corresponding connecting seat through bearing seats, and a shell of each motor is fixedly connected to the corresponding connecting seat. The belt pulley is connected with a belt, the belt is buckled through a lock catch, and the engine body is hoisted to the belt and can rotate around the central axis of the engine body under the driving of the motor. By means of the device, it can be guaranteed that a main bearing bush hole cannot deform in the overturning process and after overturning of an engine body, then eccentric wear of a main bearing bush can be avoided, and the service life of an engine is prolonged.

Description

Technical Field

[0001] The present invention relates to engine assembly technology, and more particularly to an engine block flipping device. Background Art

[0002] The power output of an engine is to convert the up-and-down linear motion of the piston into the rotational motion of the crankshaft for power output. The rotational motion function of the crankshaft relies on the circular main bearing bush holes in the engine block. The installation dimensions of the main bearing bush holes directly determine the service life of the rotational motion of the crankshaft. At the lightest, eccentric wear of the main bearing bush occurs. At the heaviest, due to unqualified clearances, the lubrication effect of the main bearing bush is poor, resulting in the melting of the main bearing bush, or even the seizure of the main bearing bush, and seriously, the phenomenon of crankshaft fracture may occur. The factors determining the dimensions of the main bearing bush holes include, in addition to the machining condition of the engine block seat holes and the quality of the main bearing bush parts, the most important ones are the assembly of the bearing bush holes and the assembly of the crankshaft during the internal combustion engine assembly stage. A scientific and reasonable engine assembly process is an important factor determining the engine assembly quality, which ultimately directly affects the service life of the engine and is also the key to determining the competitive advantage or disadvantage of the product in the market.

[0003] The traditional processes for assembling the main bearing bush holes of the engine block and assembling the crankshaft adopt a cage-type engine block flipping device. Refer to Figure 1 , one end of the first locking member and the second locking member of this engine flipping frame is fixed to the engine, the output end of the motor 14 is connected to the first circular ring frame 18, a toothed ring 1801 is fixedly connected to one side of the first circular ring frame 18, the output end of the motor 14 is fixedly connected to a gear 17, the gear 17 is meshed with the toothed ring 1801, the motor 14 drives the gear 17 to rotate, thereby driving the first circular ring frame 18 to rotate and flipping the flipping frame body. The first locking member includes a first movable plate 20, a first positioning bolt, a first vertical rod, and a first pressing plate. The positions of the first movable plate 20 and the second movable plate can be adjusted according to the size of the engine, and the first movable plate 20 is locked to the first fixing plate 19 by tightening the first positioning bolt. The engine can be fixed by rotating the first threaded rod to drive the first pressing plate to approach or move away from the first movable plate 20. When using the above engine flipping frame to flip the engine, the feet of the engine block are pressed against the first movable plate 20 by the first pressing plate to fix the engine block. In addition to the above method of clamping and fixing the engine block, there is also a fixing method in the prior art of using the foot bolt holes of the engine block to fix the engine block to the flipping frame with bolts. Then, the motor 14 is driven to make the first circular ring frame 18 rotate, thereby driving the first fixing plate 19 to rotate, so as to be able to flip the engine block by about 135 degrees to 150 degrees to a position convenient for the operator to operate. Finally, the main bearing bush hole assembly and the crankshaft assembly work are carried out according to the process requirements.

[0004] For an engine assembled with a main bearing housing bore and a crankshaft using the above engine turnover stand, during later disassembly and inspection, it was found that there was uneven wear on the main bearing shells to varying degrees. This uneven wear was not caused by cleanliness reasons. After research and demonstration, it was found that the machining state of the main bearing holes of the engine block was with the bottom surface of the block facing vertically upward. During the assembly process of fitting the main bearing holes of the block and the crankshaft, the block was only fixed using the lower corner screw holes in the above-mentioned cage-type turnover stand, and then turned 135 to 150 degrees for the fitting work. After the block was turned over, the entire block weighing about 1 - 2 tons was suspended obliquely in the cage-type turnover stand, only fixed by the bottom bolts. When the engine block was turned over, the rigid structure stress of the engine block changed due to the change in the center of gravity, and the main bearing holes underwent stress deformation. The tightening of the cross bolts and main bearing bolts in this state caused the main bearing holes to change to varying degrees. This deformation existed during the placement process and the fitting process, and even after the fitting was completed, it would still change under the strong force of the main shaft bolts and cross bolts. Eventually, this varying degree of deformation acted on the friction pair between the main bearing shell and the main journal of the crankshaft, causing abnormal uneven wear on the softer inner layer of the main bearing shell, thus affecting the service life of the engine and even leading to the situation of crankshaft fracture during the use of the engine, resulting in significant economic losses. Summary of the Invention

[0005] The object of the present invention is to provide an engine block turnover device, which can ensure that the main bearing housing bore does not deform during and after the turnover of the engine block, and thus can avoid uneven wear of the main bearing shell, thereby increasing the service life of the engine.

[0006] To solve the above technical problems, the present invention provides an engine block turnover device, which includes a hoisting and load-bearing part and a plurality of driving parts. The hoisting and load-bearing part includes a lower load-bearing cross beam. The driving part includes a motor and a connecting seat slidably connected to the lower load-bearing cross beam. A pulley is connected to the motor shaft of the motor, and both ends of the motor shaft are connected to the connecting seat through bearing seats. The outer shell of the motor is fixedly connected to the connecting seat. A belt is connected to the pulley, and the belt forms a buckle connection through a buckle. The engine block is hoisted onto the belt and can rotate around the central axis of the engine block under the drive of the motor.

[0007] Preferably, the hoisting and load-bearing part further includes a plurality of first load-bearing longitudinal beams and second load-bearing longitudinal beams connected to the lower load-bearing cross beam, and an upper load-bearing cross beam connected to the upper end surfaces of the first load-bearing longitudinal beam and the second load-bearing longitudinal beam. The upper load-bearing cross beam is arranged parallel to the lower load-bearing cross beam so that the upper load-bearing cross beam, the first load-bearing longitudinal beam and the lower load-bearing cross beam are connected to form an I-shaped structure.

[0008] More preferably, a drive control box and a plurality of sling seats are installed on the upper surface of the upper load-bearing cross beam. The plurality of sling seats are symmetrically distributed in the length direction of the upper load-bearing cross beam. The sling seats are adapted to be threadedly connected with slings and are suspended by slings and hooks.

[0009] Preferably, storage racks are provided at both ends in the length direction of the lower surface of the lower load-bearing cross beam, and the storage racks are triangular in the width direction of the lower load-bearing cross beam.

[0010] Preferably, there are two driving parts, which are symmetrically installed on the lower load-bearing cross beam.

[0011] As a preferred embodiment, a plurality of symmetrically arranged screw holes are provided in the length direction of the lower load-bearing cross beam, and a plurality of mounting holes are provided in the length direction of the base of the connecting seat. The mounting holes are adapted to be correspondingly connected with the screw holes, and the different connection positions of the mounting holes and the screw holes enable the connecting seat to be installed at different positions in the length direction of the lower load-bearing cross beam.

[0012] As a preferred embodiment, linear guide rails are symmetrically provided on the lower load-bearing cross beam. The sliding transmission module and the motor drive module of the linear guide rail are arranged on the upper surface of the lower load-bearing cross beam, and the slider of the linear guide rail is arranged on the lower surface of the lower load-bearing cross beam, and the slider is connected with the connecting seat.

[0013] As a preferred embodiment, a bracket is provided on the base of the connecting seat, a plurality of roller shafts are provided on the bracket, a roller and a bearing located between the roller and the roller shaft are provided on each roller shaft, a limiting structure is provided at one end of the roller shaft away from the base, the roller can rotate around the roller shaft, and the outer peripheral surface of the roller abuts against the upper surface of the lower load-bearing cross beam.

[0014] As a preferred embodiment, a rotating arm and a rotating shaft are provided on the base of the connecting seat. The rotating arm is rotatably connected with the main body of the connecting seat through the rotating shaft. The rotating arms are oppositely arranged with the first load-bearing longitudinal beam as the dividing line. Rollers are provided on the rotating arms. By rotating the rotating arms, the rollers are abutted against the lower load-bearing cross beam in the vertical direction, and the rollers roll on the upper surface of the lower load-bearing cross beam.

[0015] More preferably, guide wheels are provided on the bracket or the rotating arm. The axial direction of the wheel shaft of the guide wheel is set to be perpendicular to the axial direction of the wheel shaft of the roller. The guide wheels are provided at the head and tail ends of the bracket or the rotating arm, and the rollers are provided inside the guide wheels. The guide wheels abut against the side surface of the first load-bearing longitudinal beam, and the guide wheels roll on the side surface of the first load-bearing longitudinal beam.

[0016] Preferably, the connecting seat includes symmetrically arranged reinforcing plates. Bearing seat mounting holes are provided on the reinforcing plates for connecting with bearing seats. Support wheel mounting holes are symmetrically provided in the width direction of the reinforcing plates away from the bearing seat mounting holes. Support wheels are connected to the support wheel mounting holes symmetrically arranged in the length direction to support the belt outward.

[0017] More preferably, the motor is connected to the pulley through a speed reducer.

[0018] Further preferably, the connecting seat further includes a motor mounting plate for connecting with the speed reducer.

[0019] Through the above technical solutions, the engine body flipping device provided by the present invention enables the flipping device to meet the flipping function of engine bodies with different model sizes through the driving part that can be slidably connected left and right on the lower load-bearing cross beam; the flipping device of the present invention surrounds the engine body with a belt, and drives the engine body to slowly flip until the bottom surface of the body is vertically upward by driving the belt to rotate, so that the engine body is in a natural installation state with the bottom surface vertically upward after flipping, thereby avoiding the eccentric wear of the main bearing bush caused by stress deformation of the main bearing bush hole and improving the assembly quality of the engine.

[0020] Other advantages of the present invention and the technical effects of the preferred embodiments will be further described in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0022] Figure 1 is a schematic structural diagram of an engine flipping device in the prior art;

[0023] Figure 2 is a front view of a specific embodiment of the engine body flipping device of the present invention;

[0024] Figure 3 is a side view of a specific embodiment of the engine body flipping device of the present invention;

[0025] Figure 4 is a schematic structural diagram of a specific embodiment of the connecting seat of the present invention.

[0026] DESCRIPTION OF THE REFERENCE NUMERALS

[0027] 1 - Upper load-bearing crossbeam, 2 - Hoisting ring seat, 3 - Control box, 4 - Lower load-bearing crossbeam, 5 - First load-bearing longitudinal beam, 6 - Connecting seat, 601 - Base, 6011 - Roller, 6012 - Guide wheel, 6013 - Bracket, 6014 - Guide wheel mounting bracket, 6015 - Rotating arm, 602 - Motor mounting plate, 603 - Reinforcing plate, 604 - Connecting seat body, 7 - Pulley, 8 - Support wheel, 9 - Lock, 10 - Belt, 11 - Engine block, 12 - Motor shaft, 13 - Reducer, 14 - Motor, 15 - Storage rack, 16 - Second load-bearing longitudinal beam, 17 - Gear, 18 - First circular ring frame, 1801 - Tooth ring, 19 - First fixing plate, 20 - First movable plate. Detailed implementation manners

[0028] The following will describe in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "connected" and "linked" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection, or an indirect connection through an intermediate medium, it may be an abutting connection, or the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. is based on the direction or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0031] In addition, the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features.

[0032] In a basic implementation manner of the present invention, refer to Figure 2 and Figure 3, the engine block flipping device includes a hoisting load-bearing part and multiple driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4, and the driving parts include a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14, and both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The housing of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7, and the belt 10 is buckled through a buckle 9. The engine block is hoisted onto the belt 10 and can rotate around the central axis of the engine block under the drive of the motor 14. The above-mentioned connecting seat 6 can be slidably connected to the lower load-bearing cross beam 4, so that the driving part can adjust its position in the length direction of the lower load-bearing cross beam 4, thereby meeting the hoisting and flipping work requirements for the sizes of engine blocks 11 of different models. After the above-mentioned belt 10 is buckled around the engine block 11 through the buckle 9, the position where the buckle 9 is located should not interfere with the engine block during the flipping process, and the buckle 9 will not interfere with the pulley 7 during the flipping process. To ensure that the engine block 11 always maintains the consistency of the body tilt angle during the flipping process, each belt 10 symmetrically surrounds the engine block 11 with the central axis of the engine block 11 as the reference. The above-mentioned belt 10 is a synchronous belt, and both its inner and outer surfaces are made of highly wear-resistant soft materials. It moves with the pulley 7 by relying on friction, avoiding the slipping phenomenon, and the soft material on the belt 10 can generate sufficient friction with the engine block 11 to drive the engine block 11 to rotate along the movement direction of the belt 10. The length of the above-mentioned belt 10 can be selected according to the height of the factory crane or gantry crane and the size of the engine block 11. The motors 14 on each driving part can operate synchronously, so that the belts 10 on each driving part rotate synchronously, thereby driving the engine block 11 to move slowly along the rotation direction of the belt 10 under the action of the same direction and the same force. Specifically, the belt 10 rotates clockwise under the drive of the motor 14, that is, in Figure 3In the view direction, when the left belt 10 moves downward and the right belt 10 moves upward, the buckle 9 is located at the left belt 10 at this time. The bottom of the engine block 11 rotates upward driven by the upward movement of the right belt 10. At the same time, the left belt 10 becomes slack downward. The upper left end of the engine block 11 presses the slack left belt 10 downward. As the right belt 10 pulls upward and the left belt 10 becomes slack downward, the bottom and upper end of the engine block 11 gradually move to the horizontal direction. The right belt 10 continues to pull upward, making the lower bottom surface of the engine block 11 rely more on the right belt 10 at this time until the bottom of the original engine block 11 is completely flipped to the top surface. The engine block 11 is driven by the belt 10 to flip. The force-bearing surface of the engine block 11 by the belt friction is large and the force is uniform, so that the engine block 11 is always flipped under uniform friction force, making the engine block 11 in a natural installation state with the bottom surface vertically upward, thus avoiding the main bearing bush wear caused by stress deformation of the main bearing bush holes and ensuring the product assembly quality. The power of the above motor 14 can meet the weights of engine blocks of different models. The load-bearing capacity of the belt 10 can meet the weights of engine blocks of different models. The load-bearing capacity of the hoisting load-bearing part can meet the weights of the driving parts of different models and the weight of the engine block 11.

[0033] In this embodiment, the engine block flipping device includes a hoisting load-bearing part and a plurality of driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving part includes a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The housing of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 forms a buckle connection through a buckle 9. The engine block is hoisted onto the belt 10 and can rotate around the central axis of the engine block driven by the motor 14. The hoisting load-bearing part further includes a plurality of first load-bearing longitudinal beams 5, second load-bearing longitudinal beams 16 connected to the lower load-bearing cross beam 4, and an upper load-bearing cross beam 1 connected to the upper end surfaces of the first load-bearing longitudinal beams 5 and the second load-bearing longitudinal beams 16. The upper load-bearing cross beam 1 is arranged parallel to the lower load-bearing cross beam 4 so as to enable the upper load-bearing cross beam 1, the first load-bearing longitudinal beams 5 and the lower load-bearing cross beam 4 to be connected to form an I-shaped structure. To strengthen the structural stability of the connection between the upper load-bearing cross beam 1 and the lower load-bearing cross beam 4, the second load-bearing longitudinal beams 16 are respectively connected to the middle positions and the positions of the outer lifting ring seats 2 between the upper load-bearing cross beam 1 and the lower load-bearing cross beam 4. The first load-bearing longitudinal beams 5 and the second load-bearing longitudinal beams 16 are perpendicular to each other.

[0034] In this embodiment, the engine body turning device includes a hoisting load-bearing part and a plurality of driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4, and the driving parts include a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The housing of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7, and the belt 10 is buckled through a buckle 9. The engine body is hoisted onto the belt 10 and can rotate around the central axis of the engine body under the drive of the motor 14. Among them, the hoisting load-bearing part further includes a plurality of first load-bearing longitudinal beams 5 and second load-bearing longitudinal beams 16 connected to the lower load-bearing cross beam 4, and an upper load-bearing cross beam 1 connected to the upper end surfaces of the first load-bearing longitudinal beam 5 and the second load-bearing longitudinal beam 16. The upper load-bearing cross beam 1 is arranged parallel to the lower load-bearing cross beam 4 so that the upper load-bearing cross beam 1, the first load-bearing longitudinal beam 5 and the lower load-bearing cross beam 4 are connected to form an I-shaped structure. A driving control box 3 and a plurality of sling seats 2 are installed on the upper surface of the upper load-bearing cross beam 1. The plurality of sling seats 2 are symmetrically distributed in the length direction of the upper load-bearing cross beam 1. The sling seats 2 are adapted to be threadedly connected to slings and are suspended through slings and hooks. An electric control unit and a switch are provided in the above-mentioned driving control box 3, which is equipped with a remote control long-range shooting device and is equipped with a remote controller. The staff on the ground controls the working state of the motor 14 by operating the remote controller. To maintain the structural stability of the hoisting load-bearing part during suspension, the driving control box 3 is arranged at the center position of the hoisting load-bearing part, and the sling can be driven by a traveling crane or a gantry crane to move up, down, left and right in the factory building to a suitable position to lift the engine body turning device.

[0035] In this embodiment, the engine body turning device includes a hoisting load-bearing part and a plurality of driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4, and the driving parts include a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The housing of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7, and the belt 10 is buckled through a buckle 9. The engine body is hoisted onto the belt 10 and can rotate around the central axis of the engine body under the drive of the motor 14. At both ends in the length direction of the lower surface of the lower load-bearing cross beam 4, there are storage racks 15. The storage racks 15 are triangular in the width direction of the lower load-bearing cross beam 4 so that the engine body turning device can be stably placed on the ground for storage through the triangular storage racks 15, and the height of the storage racks 15 is higher than the height of the motor 14 and the connecting seat 6.

[0036] In this embodiment, the engine body flipping device includes a hoisting load-bearing part and a plurality of driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving parts include a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The outer shell of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 is buckled through a buckle 9. The engine body is hoisted onto the belt 10 and can rotate around the central axis of the engine body under the drive of the motor 14. Preferably, there are two driving parts, which are symmetrically installed on the lower load-bearing cross beam 4. In addition, users can also set driving parts with different powers according to the body weight and size of different models to stably hoist and flip the engine body. The number of the driving parts can be two or four, and they are symmetrically and evenly distributed on the lower load-bearing cross beam 4.

[0037] In this embodiment, the engine body flipping device includes a hoisting load-bearing part and two driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving parts include a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The outer shell of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 is buckled through a buckle 9. The engine body is hoisted onto the belt 10 and can rotate around the central axis of the engine body under the drive of the motor 14. A plurality of symmetric screw holes are provided in the length direction of the lower load-bearing cross beam 4. A plurality of mounting holes are provided in the length direction of the base 601 of the connecting seat 6. The mounting holes are adapted to be correspondingly connected to the screw holes through the cooperation of bolts and nuts. The different connection positions of the mounting holes and the screw holes enable the connecting seat 6 to be installed at different positions in the length direction of the lower load-bearing cross beam 4. By providing different numbers of screw holes in the length direction of the lower load-bearing cross beam 4, the movable range of the connecting seat 6 on the lower load-bearing cross beam 4 can be realized, so as to meet the usage requirements of engines with different model sizes.

[0038] In this embodiment, the engine block flipping device includes a hoisting load-bearing part and two driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving part includes a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The outer shell of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7, and the belt 10 is formed into a buckle connection through a buckle 9. The engine block 11 is hoisted onto the belt 10 and can rotate around the central axis of the engine block 11 under the drive of the motor 14. Linear guide rails are symmetrically arranged on the lower load-bearing cross beam 4, that is, the linear guide rails are symmetrically arranged on the lower load-bearing cross beam 4 with the second load-bearing longitudinal beam 16 located in the middle of the lower load-bearing cross beam 4 as the dividing line. The sliding transmission module and the motor drive module of the linear guide rail are fixed on the upper surface of the lower load-bearing cross beam 4. The slider of the linear guide rail is arranged on the lower surface of the lower load-bearing cross beam 4. The slider is connected to the sliding transmission module through a connecting component, and there is a movement gap between the slider and the lower load-bearing cross beam 4 to ensure that the slider can smoothly move on the lower load-bearing cross beam 4 under the drive of the sliding transmission module. The above-mentioned slider is fixedly connected to the connecting seat 6 to drive the connecting seat 6 to slide on the lower load-bearing cross beam 4 by driving the slider to slide. The length setting of the above-mentioned sliding transmission module determines the adjustable range of the slider, and thus determines the range of engine sizes applicable to this flipping device. Therefore, the user can set sliding transmission modules with different lengths according to the usage requirements.

[0039] In this embodiment, the engine block flipping device includes a hoisting load-bearing part and two driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving part includes a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The outer shell of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7, and the belt 10 is formed into a buckle connection through a buckle 9. The engine block 11 is hoisted onto the belt 10 and can rotate around the central axis of the engine block 11 under the drive of the motor 14. See Figure 2 and Figure 3, a bracket 6013 is provided on the base 601 of the connecting seat 6. There are two brackets 6013, which are symmetrically arranged on the base 601 with the first load-bearing longitudinal beam 5 as the dividing line. In the length direction of the bracket 6013, it is divided into five C-shaped spaces by a plurality of partitions with right-angled triangle cross-sections. Roller shafts are provided in the head, tail, and middle C-shaped spaces. Roller 6011 and a bearing located between the roller 6011 and the roller shaft are provided on each roller shaft. A limiting structure is provided at one end of the roller shaft away from the base 601, that is, a limiting structure is provided at the end of the roller shaft away from the partition to limit the roller 6011 from generating an offset movement in the length direction of the roller shaft when rotating on the roller shaft. The roller 6011 can rotate around the roller shaft, and the outer peripheral surface of the roller abuts against the upper surface of the lower load-bearing cross beam 4, forming a rolling fit with the upper surface of the lower load-bearing cross beam 4. A positioning structure is provided in the remaining C-shaped spaces, that is, the positioning structure is arranged at an interval from the roller shaft. When the driving part slides to a preset working position on the lower load-bearing cross beam 4, the positioning structure is automatically locked with the first load-bearing longitudinal beam 5 to complete the positioning of the driving part on the lower load-bearing cross beam 4. It can be imagined that the number of C-shaped spaces divided by the above-mentioned bracket 6013 is not limited to 5 in this embodiment. Users can extend or shorten the length of the bracket 6013 according to process requirements such as load-bearing requirements and the length limit of the lower load-bearing cross beam 4, so as to increase or decrease the number of C-shaped spaces, that is, increase or decrease the number of rollers. A plurality of limiting devices are also provided on the above-mentioned lower load-bearing cross beam 4 to limit the left and right limits of the displacement of the connecting seat 6 on the lower load-bearing cross beam.

[0040] In this embodiment, the engine body flipping device includes a hoisting load-bearing part and two driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving part includes a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The housing of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 is formed into a buckle connection through a buckle 9. The engine body is hoisted onto the belt 10 and can rotate around the central axis of the engine body 11 under the drive of the motor 14. See Figure 4, a rotating arm 6015 and a rotating shaft are provided on the base 601 of the connecting seat 6. There are two rotating arms 6015, which are symmetrically arranged on the base 601 with the first load-bearing longitudinal beam 5 as the dividing line. The rotating shafts and the rotating arms 6015 are set in a one-to-one correspondence. Bush grooves are provided at both ends of the connecting seat body 604 of the connecting seat 6 in the length direction. The rotating shafts are arranged on both sides of the rotating arm 6015 in the length direction, and the rotating shafts are adapted to extend into the bush grooves to rotatably connect with the connecting seat body 604, so that the rotating arms 6015 can be driven to open outward or move inward by driving the rotating shafts to rotate. The rotating arm 6015 in this embodiment can rotate. Therefore, when the connecting seat 6 is installed on the hoisting load-bearing part, the two rotating arms 6015 first rotate away from each other until the lower load-bearing cross beam 4 is located between the two rotating arms 6015, and then the two rotating arms 6015 are rotated towards each other until the rotating arm 6015 reaches directly above the lower load-bearing cross beam 4, so that the rotating arm 6015 presses on the upper side of the lower load-bearing cross beam 4 in the vertical direction. To reduce the resistance when the driving part slides on the lower load-bearing cross beam 4, rollers 6011 can be provided on the rotating arm 6015. In this embodiment, three rollers 6011 are provided on each rotating arm 6015, and when the driving part is installed on the lower load-bearing cross beam 4, the axial direction of the roller shafts of the rollers 6011 is set to the horizontal direction, so that the rollers 6011 can abut against the lower load-bearing cross beam 4 in the vertical direction, and the rollers 6011 can roll on the upper surface of the lower load-bearing cross beam 4, so as to achieve a better rolling fit effect. In addition, the number of rollers 6011 on each rotating arm 6015 is not limited to three in the above embodiment, and can also be adjusted to two, four or other multiple numbers of rollers 6011 according to the use requirements. A plurality of limiting devices can also be provided on the above-mentioned lower load-bearing cross beam 4 to limit the left and right extreme positions of the displacement of the connecting seat 6 on the lower load-bearing cross beam 4.

[0041] In the above two specific implementation manners of the roller fit connection between the connecting seat 6 and the lower load-bearing cross beam 4, guide wheels 6012 are provided on both the bracket 6013 or the rotating arm 6015. The guide wheels 6012 are connected to the rotating arm 6015 through the guide wheel mounting bracket 6014. The axial direction of the roller shafts of the guide wheels 6012 is set perpendicular to the axial direction of the roller shafts of the rollers 6011. The guide wheels 6012 are provided at the head and tail ends of the bracket 6013 or the rotating arm 6015, and the rollers 6011 are provided inside the guide wheels 6012. In addition, the rollers 6011 can also be provided outside the guide wheels 6012. The guide wheels 6012 abut against the side surface of the first load-bearing longitudinal beam 5, and the guide wheels 6012 roll on the side surface of the first load-bearing longitudinal beam 5. The setting of the guide wheels 6012 can assist the connecting seat 6 to move stably on the lower load-bearing cross beam 4 with the first load-bearing longitudinal beam 5 as the movement reference.

[0042] In this embodiment, the engine body flipping device includes a hoisting load-bearing part and a plurality of driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving parts include a motor 14 and a connecting seat 6 that is slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The outer shell of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 is formed into a buckle connection through a buckle 9. The engine body is hoisted onto the belt 10 and can rotate around the central axis of the engine body 11 under the drive of the motor 14. The connecting seat 6 includes symmetrically arranged reinforcing plates 603. Bearing seat mounting holes are formed in the reinforcing plates 603 for fixedly connecting with the bearing seats. The bearing seats are used for connecting with the motor shaft 12 so that the motor shaft 12 is supported by the bearing seats, reducing the friction coefficient of the motor shaft 12 during movement and ensuring its rotation accuracy. Support wheel mounting holes are symmetrically formed in the width direction of the reinforcing plates 603 away from the bearing seat mounting holes. Support wheels 8 are connected to the support wheel mounting holes symmetrically arranged in the length direction. The support wheels 8 are rotatably connected to the reinforcing plates 603. The support wheels 8 can support the belt 10 outward, thereby preventing the belt 10 from fitting together during movement.

[0043] In this embodiment, the engine body flipping device includes a hoisting load-bearing part and a plurality of driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam 4. The driving parts include a motor 14 and a connecting seat 6 that is slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The outer shell of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 is formed into a buckle connection through a buckle 9. The engine body 11 is hoisted onto the belt 10 and can rotate around the central axis of the engine body 11 under the drive of the motor 14. The connecting seat 6 includes symmetrically arranged reinforcing plates 603. Bearing seat mounting holes are formed in the reinforcing plates 603 for connecting with the bearing seats. Support wheel mounting holes are symmetrically formed in the width direction of the reinforcing plates away from the bearing seat mounting holes. Support wheels 8 are connected to the support wheel mounting holes symmetrically arranged in the length direction for outwardly supporting the belt 10. Based on the application field and application scenario of the present invention, that is, when assembling the main bearing bush holes and the crankshaft of the engine, the engine body 11 needs to be flipped. To effectively avoid the belt 10 from slipping and ensure that the engine body 11 is always in a natural state, it is necessary to maintain a low-speed flip. Moreover, the weight of the engine body 11 is relatively large. Therefore, in this embodiment, the motor 14 is connected to the pulley 7 through a speed reducer 13, which can reduce the speed and increase the output torque of the motor shaft 12 at the same time, so as to effectively improve the load capacity and thus be able to support the weight of the engine. The parameter models of the motor 14 and the speed reducer 13 can be adjusted according to the weights of different engine models.

[0044] In this embodiment, the engine body turning device includes a hoisting and load-bearing part and a plurality of driving parts. The hoisting and load-bearing part includes a lower load-bearing cross beam 4. The driving part includes a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The housing of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 is formed into a buckle connection through a buckle 9. The engine body is hoisted onto the belt 10 and can rotate around the central axis of the engine body 11 under the drive of the motor 14. The connecting seat 6 includes symmetrically arranged reinforcing plates 603. Bearing seat mounting holes are provided on the reinforcing plates 603 for connecting with bearing seats. Wheel mounting holes are symmetrically provided in the width direction of the reinforcing plate away from the bearing seat mounting holes. Wheel mounting holes symmetrically arranged in the length direction are connected with wheels 8 for outwardly supporting the belt 10. The motor 14 is connected to the pulley 7 through a speed reducer 13. The above-mentioned connecting seat 6 further includes a motor mounting plate 602 for connecting with the speed reducer 13. Specifically, an arc-shaped notch is provided on the motor mounting plate 602, and the contour shape of the notch is consistent with the outer contour shape of the installation part of the speed reducer 13. A plurality of clamping plates are further provided on the motor mounting plate 602. Clamping heads are provided on the clamping plates, and the contour shape of the clamping heads is arc-shaped and is suitable for abutting against the outer contour of the speed reducer 13. To maintain and improve the clamping effect on the speed reducer, a threaded driving assembly is further provided on the motor mounting plate 602 and is threadedly connected with a plurality of clamping plates. By rotating the bolts, the clamping plates are pushed to press the speed reducer 13 and the clamping plates are locked on the motor mounting plate 602 to maintain the fixed state of the speed reducer 13. A damping member can also be provided at the installation part of the motor mounting plate 602 and the speed reducer 13. By supporting and fixing the speed reducer 13 and the motor 14 connected to the speed reducer 13 through the motor mounting plate 602, it is possible to avoid a large vibration generated when the speed reducer 13 works, thereby causing the phenomenon that the motor shaft 12 is radially offset. The above-mentioned damping member can preferably be a rubber pad bonded to the contact surface between the clamping head and the speed reducer 13.

[0045] As an optimal embodiment of the present invention, the engine block flipping device includes a hoisting and load-bearing part and two driving parts. The hoisting and load-bearing part includes a lower load-bearing cross beam 4, a plurality of first load-bearing longitudinal beams 5 connected to the lower load-bearing cross beam 4, a second load-bearing longitudinal beam 16, and an upper load-bearing cross beam 1 connected to the upper end surfaces of the first load-bearing longitudinal beam 5 and the second load-bearing longitudinal beam 16. The upper load-bearing cross beam 1 is arranged parallel to the lower load-bearing cross beam 4 so that the upper load-bearing cross beam 1, the first load-bearing longitudinal beam 5 and the lower load-bearing cross beam 4 are connected to form an I shape. A driving control box 3 and a plurality of sling seats 2 are installed on the upper surface of the upper load-bearing cross beam 1. The plurality of sling seats 2 are symmetrically distributed in the length direction of the upper load-bearing cross beam 1. The sling seats 2 are adapted to be threadedly connected with slings and are suspended by slings and hooks. Receiving frames 15 are provided at both ends in the length direction of the lower surface of the lower load-bearing cross beam 4. The receiving frames 15 are triangular in the width direction of the lower load-bearing cross beam 4. The driving parts are symmetrically installed on the lower load-bearing cross beam 4. The driving part includes a motor 14 and a connecting seat 6 slidably connected to the lower load-bearing cross beam 4. A rotating arm 6015 and a rotating shaft are provided on the base 601 of the connecting seat 6. The rotating arm 6015 is rotatably connected to the connecting seat body 604 through the rotating shaft. The rotating arms 6015 are oppositely arranged with the first load-bearing longitudinal beam 5 as the dividing line. A roller 6011 is provided on the rotating arm 6015. By rotating the rotating arm 6015, the roller 6011 abuts against the lower load-bearing cross beam 4 in the vertical direction, and the roller 6011 can roll on the upper surface of the lower load-bearing cross beam 4. A guide wheel 6012 is provided on the rotating arm 6015. The axial direction of the wheel shaft of the guide wheel 6012 is set perpendicular to the axial direction of the wheel shaft of the roller 6011. The guide wheels 6012 are provided at the head and tail ends of the rotating arm 6015, and the roller 6011 is provided inside the guide wheels 6012. The guide wheels 6012 abut against the side surface of the first load-bearing longitudinal beam 5, and the guide wheels 6012 can roll on the side surface of the first load-bearing longitudinal beam 5. The connecting seat 6 includes symmetrically arranged reinforcing plates 603. Bearing seat mounting holes are provided on the reinforcing plates 603 for connecting with bearing seats. Support wheel mounting holes are symmetrically provided in the width direction of the reinforcing plates 603 away from the bearing seat mounting holes. Support wheels 8 are connected to the symmetrically arranged support wheel mounting holes in the length direction to support the belt 10 outward. The motor 14 is connected to a pulley 7 through a speed reducer 13. A motor mounting plate 602 is provided on the connecting seat 6 for connecting with the speed reducer 13. A pulley 7 is connected to the motor shaft 12 of the motor 14. Both ends of the motor shaft 12 are connected to the connecting seat 6 through bearing seats. The housing of the motor 14 is fixedly connected to the connecting seat 6. A belt 10 is connected to the pulley 7. The belt 10 is formed into a buckle connection through a buckle 9. The engine block 11 is hoisted onto the belt 10 and can rotate around the central axis of the engine block 11 under the drive of the motor 14.

[0046] The working process of the engine block flipping device of the present invention is as follows:

[0047] According to the outer peripheral dimensions of the engine block 11, after reasonably adjusting the driving part left and right, lock the position of the driving part, wind the belt 10 around the symmetric positions in the length direction of the engine block 11, adjust the position of the buckle 9 and fasten it. Lift the engine block turning device to an appropriate height through the hook and the lifting rope, remotely control the motor 14 to rotate to drive the pulley 7 to rotate, thereby driving the belt 10 to move. Rely on the friction force between the belt 10 and the engine block 11 to drive the engine block 11 to slowly turn until the bottom surface is vertically upward. During the turning process, the engine block 11 only receives the friction force from the belt 10. Place the turned engine block 11 with the bottom surface vertically upward on the assembly platform, loosen the belt 10. At this time, the engine block 11 is in a vertical natural state. Carry out the assembly of the main bearing bush holes and the crankshaft of the engine. The tightening of the cross bolts and the main bearing bolt nuts during this assembly work is also in a natural state, which is consistent with the machining state of the engine block 11. After the assembly process of the main bearing bush holes and the crankshaft is completed and inspected qualified, then wind and fasten the engine block 11 through the belt 10, lift it to an appropriate height and turn it to place it with the bottom surface vertically downward for subsequent assembly processes. During the process of turning the engine block 11 by using the engine block turning device of the present invention and during the assembly of the main bearing bush holes and the crankshaft of the engine block 11, the engine block 11 is always in a natural state. And after putting the engine block turning device of the present invention into use, through the disassembly and inspection of multiple engines, it is found that there is no eccentric wear phenomenon in the main bearing bush, and through the measurement of the main bearing bush holes, it is found that the main bearing bush holes of the present invention only have a change in error of 0.02 - 0.03 mm in the 45° direction. The engine block turning device provided by the present invention can also automatically adjust the gap between the driving parts according to the dimensions of engines of different models, so as to be able to adapt to the hoisting and assembly work of engines of different sizes.

[0048] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0049] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, without conflict, they can be combined in any suitable way. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. In addition, any combination can be made between various different embodiments of the present invention, as long as it does not violate the idea of the present invention, it should also be regarded as the content disclosed by the present invention.

Claims

1. An engine block flipping device, characterized in that, It includes a hoisting load-bearing part and multiple driving parts. The hoisting load-bearing part includes a lower load-bearing cross beam (4). The driving part includes a motor (14) and a connecting seat (6) slidably connected to the lower load-bearing cross beam (4). A pulley (7) is connected to the motor shaft (12) of the motor (14). Both ends of the motor shaft (12) are connected to the connecting seat (6) through bearing seats. The housing of the motor (14) is fixedly connected to the connecting seat (6). A belt (10) is connected to the pulley (7). The belt (10) forms a buckle connection through a buckle (9). The engine block (11) is hoisted onto the belt (10) and can rotate around the central axis of the engine block (11) under the drive of the motor (14).

2. The engine block flipping device according to claim 1, characterized in that, The hoisting load-bearing part further includes multiple first load-bearing longitudinal beams (5) and second load-bearing longitudinal beams (16) connected to the lower load-bearing cross beam (4), and an upper load-bearing cross beam (1) connected to the upper end surfaces of the first load-bearing longitudinal beam (5) and the second load-bearing longitudinal beam (16). The upper load-bearing cross beam (1) is arranged parallel to the lower load-bearing cross beam (4) so that the upper load-bearing cross beam (1), the first load-bearing longitudinal beam (5) and the lower load-bearing cross beam (4) can be connected to form an I-shaped structure.

3. The engine block flipping device according to claim 2, wherein, A drive control box (3) and multiple sling seats (2) are installed on the upper surface of the upper load-bearing cross beam (1). The multiple sling seats (2) are symmetrically distributed in the length direction of the upper load-bearing cross beam (1). The sling seats (2) are adapted to be threadedly connected to slings and are suspended through slings and hooks.

4. The engine block flipping device according to claim 1, characterized in that, Receiving frames (15) are provided at both ends in the length direction of the lower surface of the lower load-bearing cross beam (4). The receiving frames (15) are triangular in the width direction of the lower load-bearing cross beam (4).

5. The engine body turnover device according to claim 2, characterized in that, There are two driving parts, which are symmetrically installed on the lower load-bearing cross beam (4).

6. The engine block flipping device according to claim 5, characterized in that, A plurality of symmetric screw holes are provided in the length direction of the lower load-bearing cross beam (4). A plurality of mounting holes are provided in the length direction of the base (601) of the connecting seat (6). The mounting holes are adapted to be correspondingly connected to the screw holes. Different connection positions of the mounting holes and the screw holes enable the connecting seat (6) to be installed at different positions in the length direction of the lower load-bearing cross beam (4).

7. The engine block flipping device according to claim 5, characterized in that, Linear guides are symmetrically provided on the lower load-bearing cross beam (4). The sliding transmission module and the motor drive module of the linear guide are arranged on the upper surface of the lower load-bearing cross beam (4). The slider of the linear guide is arranged on the lower surface of the lower load-bearing cross beam (4), and the slider is connected to the connecting seat (6).

8. The engine block turning device according to claim 5, characterized in that, A bracket (6013) is provided on the base (601) of the connection seat (6). A plurality of roller shafts are provided on the bracket (6013). A roller (6011) and a bearing located between the roller (6011) and the roller shaft are provided on each of the roller shafts. A limiting structure is provided at one end of the roller shaft away from the base (601). The roller (6011) can rotate around the roller shaft, and the outer peripheral surface of the roller abuts against the upper surface of the lower load-bearing cross beam (4).

9. The engine block flipping device according to claim 5, wherein A rotating arm (6015) and a rotating shaft are provided on the base (601) of the connection seat (6). The rotating arm (6015) is rotatably connected to the connection seat main body (604) through the rotating shaft. The rotating arms (6015) are arranged oppositely with the first load-bearing longitudinal beam (5) as the dividing line. A roller (6011) is provided on the rotating arm (6015). By rotating the rotating arm (6015), the roller (6011) abuts against the lower load-bearing cross beam (4) in the vertical direction, and the roller (6011) rolls on the upper surface of the lower load-bearing cross beam (4).

10. The engine block flipping device according to any one of claims 8 or 9, characterized in that, A guide wheel (6012) is provided on the bracket (6013) or the rotating arm (6015). The axial direction of the wheel shaft of the guide wheel (6012) is set to be perpendicular to the axial direction of the wheel shaft of the roller (6011). The guide wheel (6012) is provided at the head and tail ends of the bracket (6013) or the rotating arm (6015), and the roller (6011) is provided inside the guide wheel (6012). The guide wheel (6012) abuts against the side surface of the first load-bearing longitudinal beam (5), and the guide wheel (6012) rolls on the side surface of the first load-bearing longitudinal beam (5).

11. The engine block flipping device according to claim 1, characterized in that, The connection seat (6) includes symmetrically arranged reinforcing plates (603). Bearing seat mounting holes are provided on the reinforcing plates (603) for connecting with the bearing seats. Support wheel mounting holes are symmetrically provided in the width direction away from the bearing seat mounting holes on the reinforcing plates (603). Support wheels (8) are connected to the support wheel mounting holes symmetrically in the length direction for outwardly supporting the belt (10).

12. The engine block flipping device according to claim 11, characterized in that, The motor (14) is connected to the pulley (7) through a speed reducer (13).

13. The engine block flipping device according to claim 12, characterized in that, The connection seat (6) further includes a motor mounting plate (602) for connecting with the speed reducer (13).

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