CN211198320U

CN211198320U - Engine flywheel lifting appliance

Info

Publication number: CN211198320U
Application number: CN201921780645.6U
Authority: CN
Inventors: 潘伟源
Original assignee: Zhejiang Hengchun Machinery Co ltd
Current assignee: Zhejiang Hengchun Machinery Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-08-07
Anticipated expiration: 2029-10-22

Abstract

The utility model relates to the field of lifting appliances, in particular to an engine flywheel lifting appliance, which comprises a positioning frame, a rotating mechanism, a suspension arm, a connecting arm, an adjusting mechanism, a fixing mechanism and a flywheel, wherein the flywheel is arranged on the top of the positioning frame, the fixing mechanism is arranged on the top of the flywheel, the adjusting mechanism is fixedly arranged on the top of the fixing mechanism, the rotating mechanism is arranged on the top of the adjusting mechanism, the rotating mechanism is fixedly connected with the adjusting mechanism, the suspension arm is fixedly arranged on the top of the rotating mechanism, the connecting arm is fixedly arranged on one side of the outer edge of the suspension arm far away from the rotating mechanism, the engine flywheel lifting appliance replaces a method for manually carrying the flywheel, the flywheel is prevented from slipping off the hands of workers and falling on the ground, so that gears on the flywheel are broken, when hole sites on the flywheel are changed through the effect of the adjusting mechanism, the flywheel lifting appliance does not need to be replaced, the workload of flywheel installation is reduced, and the production efficiency is improved.

Description

Engine flywheel lifting appliance

Technical Field

The utility model relates to an engine flywheel technical field, concretely relates to engine flywheel hoist.

Background

A lifting appliance refers to a device for lifting a heavy object in a lifting machine. The most common lifting devices for lifting finished articles are lifting hooks, lifting straps, lifting rings, lifting suction cups, clamps, forks and the like. Is widely applied to the hoisting industry. In the process of mounting a conventional flywheel, firstly, two positioning pins are manually inserted into positions to be mounted, then a worker lifts the flywheel, hole positions on the flywheel penetrate through the two positioning pins to realize the positioning of the flywheel, then the flywheel and a body are fixed together by using bolts of the worker, and further the flywheel is mounted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an engine flywheel hoist.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an engine flywheel hoist, including the locating rack, rotary mechanism, the davit, the linking arm, adjustment mechanism, fixed establishment and flywheel, the locating rack is fixed to be set up subaerial, the roof at the locating rack is placed to the flywheel, fixed establishment is located the top of flywheel, and fixed establishment dismantles with the bell housing and is connected, the fixed top that sets up at fixed establishment of adjustment mechanism, and adjustment mechanism is connected with the fixed establishment transmission, rotary mechanism is located adjustment mechanism's roof, and rotary mechanism and adjustment mechanism fixed connection, the davit is fixed to be set up at rotary mechanism's top, the fixed outer fringe one side that sets up at the davit and keep away from rotary mechanism of.

As an engine flywheel hoist's preferred scheme, rotary mechanism includes the commentaries on classics board, rolling bearing, the reference column, safety cover and a plurality of fastening bolt, the bottom and the fixed establishment welding of commentaries on classics board, the reference column is located the top of commentaries on classics board, and the roof of reference column has seted up the annular groove, fastening bolt is located the annular groove, and the annular groove passes the reference column and changes board fixed connection, the rolling bearing cover is established on the outer fringe of reference column, and rolling bearing's inner edge and the outer fringe laminating of reference column, the safety cover is established in rolling bearing's the outside, and the outer fringe bottom of safety cover is fixed and is provided with the fender ring, the bottom and the commentaries on classics board laminating of fender ring, the fender ring passes through the.

As a preferred scheme of the engine flywheel lifting appliance, the adjusting mechanism comprises a frame-shaped connecting plate, a guide pillar, a threaded pillar, two limiting plates and positioning blocks, the frame-shaped connecting plate is fixedly welded at the bottom of the rotating plate, the two positioning blocks can be arranged in the frame-shaped connecting plate in a left-right sliding manner, the two limiting plates are arranged at the top of the frame-shaped connecting plate in a butting manner for the positioning blocks, the length direction of the limiting plates is parallel to the length direction of the frame-shaped connecting plate, a gap is reserved between the two limiting plates, a guide hole and a threaded hole are respectively arranged on the two positioning blocks along the length direction of the frame-shaped connecting plate, one side of the guide pillar penetrates through the two sides of the frame-shaped connecting plate and the guide holes on the two positioning blocks, one end of the guide pillar is rotatably connected with the rotating plate, one end of the threaded, one end of the threaded column is rotatably connected with the rotating plate, a hexagonal screw head is fixedly arranged at the other end of the threaded column, and a hexagonal groove is formed in the hexagonal screw head.

As an engine flywheel hoist's preferred scheme, the fixed first rotary column that is provided with in one side that hexagonal spiral shell head was kept away from to the screw post, and the guide pillar is close to the fixed second rotary column that is provided with in one side of first rotary column, and first rotary column rotates with the commentaries on classics board through first swivel mount to be connected, and first swivel mount is fixed to be set up in the bottom of commentaries on classics board, and the second rotary column rotates with the commentaries on classics board through the second swivel mount to be connected, and the fixed bottom that sets up at the commentaries on classics board.

As an engine flywheel hoist's preferred scheme, fixed establishment includes spacing post, fastening nut and two and inserts the post, and two are inserted the post and are equallyd divide and do not fix the setting on two locating pieces, and two are inserted and set up two perforation that two confession spacing posts passed on the post, and two perforation coaxial lines set up, and two are passed to one side of spacing post and are inserted the post, and the external screw thread has been seted up to one side outer fringe of spacing post, fastening nut and spacing post threaded connection, the fixed pull ring that is provided with of opposite side of spacing post.

As an engine flywheel hoist's preferred scheme, the locating rack includes support frame, two arc backup pads and arc limiting plate, and two arc backup pads and arc limiting plate are all fixed to be set up on the support frame, and two arc backup pads and two arc limiting plate coaxial line set up, and two arc limiting plates are located the outside of two arc backup pads, and leave the clearance that is less than arc backup pad thickness between arc limiting plate inner edge and the arc backup pad outer fringe.

The utility model has the advantages that: when a worker needs to install the flywheel, the flywheel is fixedly connected with a connecting arm through a working end of equipment, the flywheel is placed on a positioning frame through the worker, when a fixing mechanism is used, two inserting columns are inserted into two hole positions of the flywheel, one side of each limiting column penetrates through two through holes in the limiting column, the limiting columns are fixed on the two inserting columns through fastening nuts, when the limiting columns and the inserting columns need to be separated through pull rings, when the fastening nuts and the limiting columns are loosened, the pulling rings are pulled to facilitate the pulling of the limiting columns from the inserting columns, if the fixing mechanism is difficult to be fixedly connected with the flywheel, when the position of the fixing mechanism needs to be adjusted, the fixing mechanism is manually inserted into a hexagonal groove through an inner hexagonal wrench, and then the inner hexagonal wrench is manually rotated to drive a hexagonal screw head and a threaded column to rotate, threaded holes in two positioning blocks are in a mutually reverse structure through threads, then the two positioning blocks are driven to synchronously move inwards or outwards through the threaded columns, and further the fixing mechanisms fixed on the positioning blocks are driven to move, so that the adjusting mechanisms can be fixedly connected with the flywheel, then the worker starts the equipment, the connecting arms drive the suspension arm and the rotating mechanism to be lifted up from the positioning frame, and further the flywheel reaches the side of the equipment to be installed, when the flywheel reaches the side of the equipment, the rotating mechanism needs to rotate for adjustment, the outer side of the rotating plate drives the adjusting mechanisms and the fixing mechanisms to rotate together through rotating the rotating plate, the inner side of the rotating plate drives the positioning columns to rotate, and then the rotating bearings are used for avoiding the friction force between the positioning columns and the protective covers, so that the worker is not convenient to rotate the rotating plate, the rotating plate can rotate relative to the protective covers through the action of the baffle rings and the limiting sleeves on the protective covers, and the rotating, the rotating plate can not drive the protective cover, the suspension arm and the connecting arm to rotate together, so that the hole site on the flywheel can be sleeved on a positioning pin which is arranged on the equipment in advance;

this engine flywheel hoist, through the effect of fixed establishment and locating rack, and then install the flywheel, replaced the method of artifical transport flywheel, avoided the flywheel to follow workman's hand landing, fall subaerial for the gear fracture on the flywheel, through adjustment mechanism's effect, when making the hole site on the flywheel change, need not advance to change the flywheel hoist, reduced the work load of flywheel installation, improved production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of a partial three-dimensional structure of the present invention.

Fig. 3 is a schematic perspective view of the positioning frame.

Fig. 4 is an exploded perspective view of the rotating mechanism.

Fig. 5 is a schematic diagram of a partial three-dimensional structure of the present invention.

Fig. 6 is a partially enlarged view of fig. 5 at a.

Fig. 7 is a schematic view of a partial three-dimensional structure of the present invention.

In the figure:

1. a positioning frame; 1a, a support frame; 1b, an arc-shaped supporting plate; 1c, arc limiting plates;

2. a rotation mechanism; 2a, rotating the plate; 2b, rotating the bearing; 2c, a positioning column; 2c1, annular groove; 2d, fastening bolts; 2f, a protective cover; 2f1, baffle ring; 2h, a limiting sleeve;

3. a suspension arm;

4. a connecting arm;

5. an adjustment mechanism; 5a, a frame-shaped connecting plate; 5b, a limiting plate; 5c, a guide post; 5d, positioning blocks; 5h, a threaded column; 5i, a hexagonal screw head; 5i1, hexagonal groove; 5j, a first rotary column; 5k, a second rotary column; 5m, a first swivel base; 5l, second transposition;

6. a fixing mechanism; 6a, inserting a column; 6b, a limiting column; 6b1, tab; 6c, fastening a nut;

7. a flywheel.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, the engine flywheel lifting appliance includes a positioning frame 1, a rotating mechanism 2, a suspension arm 3, a connecting arm 4, an adjusting mechanism 5, a fixing mechanism 6 and a flywheel 7, the positioning frame 1 is fixedly disposed on the ground, the flywheel 7 is disposed on a top plate of the positioning frame 1, the fixing mechanism 6 is disposed on the top of the flywheel 7, the fixing mechanism 6 is detachably connected with a casing of the flywheel 7, the adjusting mechanism 5 is fixedly disposed on the top of the fixing mechanism 6, the adjusting mechanism 5 is in transmission connection with the fixing mechanism 6, the rotating mechanism 2 is disposed on the top plate of the adjusting mechanism 5, the rotating mechanism 2 is fixedly connected with the adjusting mechanism 5, the suspension arm 3 is fixedly disposed on the top of the rotating mechanism 2, and the connecting arm 4 is fixedly disposed on one side of the suspension. When a worker needs to install the flywheel 7, the flywheel 7 is fixedly connected with the connecting arm 4 through the working end of the device, the worker places the flywheel 7 on the positioning frame 1, the fixing mechanism 6 is fixedly connected with the flywheel 7, if the fixing mechanism 6 is difficult to be fixedly connected with the flywheel 7, the fixing mechanism 6 is adjusted through the adjusting mechanism 5, the adjusting mechanism 5 can be fixedly connected with the flywheel 7, the worker starts the device, the connecting arm 4 drives the suspension arm 3 and the rotating mechanism 2 to be lifted from the positioning frame 1, the flywheel 7 reaches the side of the device to be installed, when the flywheel reaches the side of the device, the rotating mechanism 2 is rotated, and a hole position on the flywheel can be sleeved on a positioning pin which is placed on the device in advance.

The rotating mechanism 2 comprises a rotating plate 2a, a rotating bearing 2b, a positioning column 2c, a protective cover 2f and a plurality of fastening bolts 2d, the bottom of the rotating plate 2a is welded with the fixing mechanism 6, the positioning column 2c is positioned at the top of the rotating plate 2a, and the top plate of the positioning post 2c is provided with an annular groove 2c1, the fastening bolt 2d is positioned in the annular groove 2c1, the annular groove 2c1 penetrates through the positioning column 2c to be fixedly connected with the rotating plate 2a, the rotating bearing 2b is sleeved on the outer edge of the positioning column 2c, and the inner edge of the rotating bearing 2b is attached to the outer edge of the positioning column 2c, the protective cover 2f is sleeved on the outer side of the rotating bearing 2b, and the bottom of the outer edge of the protective cover 2f is fixedly provided with a baffle ring 2f1, the bottom of the baffle ring 2f1 is attached to the rotating plate 2a, the baffle ring 2f1 is rotatably connected with the rotating plate 2a through a limiting sleeve 2h, and the bottom of the limiting sleeve 2h is fixedly connected with the rotating plate 2 a. When rotary mechanism 2 rotates, through rotating swivel plate 2a, it will make the outer side of swivel plate 2a drive adjustment mechanism 5 and fixed establishment 6 to rotate together, the inboard of swivel plate 2a will drive the rotation of reference column 2c, rethread rolling bearing 2b, and then avoid producing frictional force between reference column 2c and safety cover 2f, make the workman be not convenient for rotate swivel plate 2a, through the effect of keeping off ring 2f1 and stop collar 2h on the safety cover 2f, make swivel plate 2a can take place to rotate relative safety cover 2f, and link together swivel plate 2a and safety cover 2f, make swivel plate 2a rotate and can not drive safety cover 2f, davit 3 and linking arm 4 rotate together.

The adjusting mechanism 5 comprises a frame-shaped connecting plate 5a, a guide post 5c, a threaded post 5h, two limiting plates 5b and positioning blocks 5d, the frame-shaped connecting plate 5a is fixedly welded at the bottom of the rotating plate 2a, the two positioning blocks 5d are arranged in the frame-shaped connecting plate 5a in a left-right sliding manner, the two limiting plates 5b are used for abutting against the positioning blocks 5d and are arranged at the top of the frame-shaped connecting plate 5a, the length direction of the limiting plates 5b is parallel to the length direction of the frame-shaped connecting plate 5a, a gap is reserved between the two limiting plates 5b, a guide hole and a threaded hole are respectively arranged on the two positioning blocks 5d along the length direction of the frame-shaped connecting plate 5a, one side of the guide post 5c penetrates through the two sides of the frame-shaped connecting plate 5a and the guide holes on the two positioning blocks 5d, one end of the guide post 5c is rotatably connected with the rotating plate 2a, one end, and the threaded column 5h is in threaded connection with the two positioning blocks 5d, one end of the threaded column 5h is rotatably connected with the rotating plate 2a, the other end of the threaded column 5h is fixedly provided with a hexagonal screw head 5i, and a hexagonal groove 5i1 is formed in the hexagonal screw head 5 i. When the position of the fixing mechanism 6 needs to be adjusted, an inner hexagonal wrench is manually inserted into the hexagonal groove 5i1, and then the inner hexagonal wrench is manually rotated to drive the hexagonal screw head 5i and the threaded column 5h to rotate, the threaded holes on the two positioning blocks 5d are in a mutually reverse structure in a threaded direction, so that the threaded column 5h drives the two positioning blocks 5d to synchronously move inwards or outwards, and further drives the fixing mechanism 6 fixed on the positioning blocks 5d to move, the frame-shaped connecting plate 5a plays a role in guiding the movement of the positioning blocks 5d, the positioning blocks 5d and the frame-shaped connecting plate 5a are prevented from falling off through the limiting plate 5b, the positioning blocks 5d cannot shake in the frame-shaped connecting plate 5a when being driven by the threaded column 5h through the guide posts 5c, and the threads on the threaded column 5h are damaged, the hexagonal head 5i and the hexagonal groove 5i1 allow a worker to turn the threaded post 5h with an allen wrench.

The fixed first rotary column 5j that is provided with in one side that hexagonal spiral head 5i was kept away from to screw post 5h, one side that guide pillar 5c is close to first rotary column 5j is fixed and is provided with second rotary column 5k, first rotary column 5j rotates with commentaries on classics board 2a through first swivel mount 5m and is connected, first swivel mount 5m is fixed to be set up in the bottom of commentaries on classics board 2a, second rotary column 5k rotates with commentaries on classics board 2a through second swivel mount 5l and is connected, the fixed bottom that sets up at commentaries on classics board 2a of second swivel mount 5 l. Through the concave structure in first swivel mount 5m, and then make first rotary column 5j card in the inside, make first swivel mount 5m can rotate at 5i, and first rotary column 5j carries out spacing effect to first swivel mount 5m, through the concave structure in second swivel mount 5l, and then make second rotary column 5k card in the inside, make second swivel mount 5l can rotate at second rotary column 5k, and second rotary column 5k carries out spacing effect to second swivel mount 5 l.

Fixing mechanism 6 includes spacing post 6b, fastening nut 6c and two insert post 6a, two insert post 6a and equally divide and do not fix the setting on two locating pieces 5d, two insert and offer two perforation that supply spacing post 6b to pass on the post 6a, two perforation coaxial lines set up, one side of spacing post 6b is passed two and is inserted post 6a, and the external screw thread has been seted up to one side outer fringe of spacing post 6b, fastening nut 6c and spacing post 6b threaded connection, the fixed pull ring 6b1 that is provided with of opposite side of spacing post 6 b. When the fixing mechanism 6 is needed to be used, the two inserting columns 6a are inserted into the two hole positions of the flywheel 7, one side of the limiting column 6b penetrates through the two through holes in the limiting column 6b, the limiting column 6b is fixed onto the two inserting columns 6a through the fastening nut 6c, and when the limiting column 6b and the inserting column 6a need to be separated through the pull ring 6b1, when the fastening nut 6c and the limiting column 6b are loosened, the pull ring 6b1 is pulled to facilitate the pulling of the limiting column 6b out of the inserting column 6 a.

The locating rack 1 comprises a support frame 1a, two arc support plates 1b and an arc limiting plate 1c, wherein the two arc support plates 1b and the arc limiting plate 1c are all fixedly arranged on the support frame 1a, the two arc support plates 1b and the two arc limiting plates 1c are coaxially arranged, the two arc limiting plates 1c are located at the outer sides of the two arc support plates 1b, and a gap smaller than the thickness of the arc support plates 1b is reserved between the inner edges of the arc limiting plates 1c and the outer edges of the arc support plates 1 b. Place flywheel 7 on arc backup pad 1b through the workman for when spacing post 6b passed the hole site on the flywheel 7, flywheel 7 and support frame 1a top left the clearance, and the spacing post 6b of being convenient for inserts, plays spacing effect when placing flywheel 7 through arc limiting plate 1c to the workman.

The working principle is as follows: when a worker needs to install the flywheel 7, the flywheel 7 is fixedly connected with the connecting arm 4 through the working end of the device, then the worker places the flywheel 7 on the positioning frame 1, the fixing mechanism 6 is used, the two inserting columns 6a are inserted into the two hole positions of the flywheel 7, one side of the limiting column 6b penetrates through the two through holes on the limiting column 6b, the limiting column 6b is fixed on the two inserting columns 6a through the fastening nut 6c, the pull ring 6b1 is used for pulling the pull ring 6b1 to pull the limiting column 6b out of the inserting column 6a when the fastening nut 6c and the limiting column 6b are loosened and the position of the fixing mechanism 6 is required to be adjusted when the fixing mechanism 6 is difficult to be fixedly connected with the flywheel 7, the pull ring 6b is manually inserted into the hexagonal groove 5i1 through the inner hexagonal wrench, then, the inner hexagon wrench is manually rotated to drive the hexagon screw head 5i and the threaded column 5h to rotate, the threaded holes on the two positioning blocks 5d are in a mutually reverse structure through thread turning, the two positioning blocks 5d are driven to synchronously move inwards or outwards through the threaded column 5h, and then the fixing mechanism 6 fixed on the positioning blocks 5d is driven to move, so that the adjusting mechanism 5 can be fixedly connected with the flywheel 7, then the equipment is started by a worker, the connecting arm 4 drives the suspension arm 3 and the rotating mechanism 2 to be lifted from the positioning frame 1, so that the flywheel 7 reaches the side of the equipment to be installed, when the flywheel reaches the side of the equipment, the rotating mechanism 2 needs to rotate to be adjusted, the outer side of the rotating plate 2a drives the adjusting mechanism 5 and the fixing mechanism 6 to rotate together through rotating the rotating plate 2a, and the inner side of the rotating plate 2a drives the positioning column 2c to rotate, rethread rolling bearing 2b, and then avoid producing frictional force between reference column 2c and the safety cover 2f, make the workman be not convenient for rotate commentaries on classics board 2a, through the effect of fender ring 2f1 and stop collar 2h on the safety cover 2f, make commentaries on classics board 2a can take place to rotate relative safety cover 2f, and link together commentaries on classics board 2a and safety cover 2f, make commentaries on classics board 2a rotate and can not drive safety cover 2f, davit 3 and linking arm 4 rotate together, make the hole site on the flywheel can overlap and establish in advance and place on the locating pin of equipment.

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. An engine flywheel lifting appliance is characterized by comprising a positioning frame (1), a rotating mechanism (2), a suspension arm (3), a connecting arm (4), an adjusting mechanism (5), a fixing mechanism (6) and a flywheel (7), wherein the positioning frame (1) is fixedly arranged on the ground, the flywheel (7) is placed on a top plate of the positioning frame (1), the fixing mechanism (6) is positioned at the top of the flywheel (7), the fixing mechanism (6) is detachably connected with the flywheel (7) shell, the adjusting mechanism (5) is fixedly arranged at the top of the fixing mechanism (6), the adjusting mechanism (5) is in transmission connection with the fixing mechanism (6), the rotating mechanism (2) is positioned on the top plate of the adjusting mechanism (5), the rotating mechanism (2) is fixedly connected with the adjusting mechanism (5), the suspension arm (3) is fixedly arranged at the top of the rotating mechanism (2), and the connecting arm (4) is fixedly arranged on one side of the outer edge of the suspension arm (3) far away from the rotating mechanism (2).

2. The engine flywheel lifting appliance according to claim 1, wherein the rotating mechanism (2) comprises a rotating plate (2 a), a rotating bearing (2 b), a positioning column (2 c), a protective cover (2 f) and a plurality of fastening bolts (2 d), the bottom of the rotating plate (2 a) is welded with the fixing mechanism (6), the positioning column (2 c) is located at the top of the rotating plate (2 a), an annular groove (2 c 1) is formed in a top plate of the positioning column (2 c), the fastening bolts (2 d) are located in the annular groove (2 c 1), the annular groove (2 c 1) penetrates through the positioning column (2 c) and is fixedly connected with the rotating plate (2 a), the rotating bearing (2 b) is sleeved on the outer edge of the positioning column (2 c), the inner edge of the rotating bearing (2 b) is attached to the outer edge of the positioning column (2 c), the protective cover (2 f) is sleeved on the outer side of the rotating bearing (2 b), and the bottom of the outer edge of the protective cover (2 f) is fixedly provided with a baffle ring (2 f 1), the bottom of the baffle ring (2 f 1) is attached to the rotating plate (2 a), the baffle ring (2 f 1) is rotatably connected with the rotating plate (2 a) through a limiting sleeve (2 h), and the bottom of the limiting sleeve (2 h) is fixedly connected with the rotating plate (2 a).

3. The engine flywheel sling according to claim 2, wherein the adjusting mechanism (5) comprises a frame-shaped connecting plate (5 a), a guide post (5 c), a threaded post (5 h), two limit plates (5 b) and locating blocks (5 d), the frame-shaped connecting plate (5 a) is fixedly welded at the bottom of the rotating plate (2 a), the two locating blocks (5 d) are arranged in the frame-shaped connecting plate (5 a) in a left-right sliding manner, the two limit plates (5 b) are arranged at the top of the frame-shaped connecting plate (5 a) in a butting manner of abutting against the locating blocks (5 d), the length direction of the limit plates (5 b) is parallel to the length direction of the frame-shaped connecting plate (5 a), a gap is reserved between the two limit plates (5 b), a guide hole and a threaded hole are arranged on each of the two locating blocks (5 d) along the length direction of the frame-shaped connecting plate (5 a), one side of the guide column (5 c) penetrates through guide holes in two sides of the frame-shaped connecting plate (5 a) and two positioning blocks (5 d), one end of the guide column (5 c) is rotatably connected with the rotating plate (2 a), one end of the threaded column (5 h) penetrates through threaded holes in two sides of the frame-shaped connecting plate (5 a) and the two positioning blocks (5 d), the threaded column (5 h) is in threaded connection with the two positioning blocks (5 d), one end of the threaded column (5 h) is rotatably connected with the rotating plate (2 a), the other end of the threaded column (5 h) is fixedly provided with a hexagonal screw head (5 i), and a hexagonal groove (5 i 1) is formed in the hexagonal screw head (5 i).

4. The engine flywheel lifting appliance is characterized in that a first rotating column (5 j) is fixedly arranged on one side, away from the hexagonal screw head (5 i), of the threaded column (5 h), a second rotating column (5 k) is fixedly arranged on one side, close to the first rotating column (5 j), of the guide column (5 c), the first rotating column (5 j) is rotatably connected with the rotating plate (2 a) through a first rotating seat (5 m), the first rotating seat (5 m) is fixedly arranged at the bottom of the rotating plate (2 a), the second rotating column (5 k) is rotatably connected with the rotating plate (2 a) through a second rotating seat (5 l), and the second rotating seat (5 l) is fixedly arranged at the bottom of the rotating plate (2 a).

5. The engine flywheel lifting appliance according to claim 3, wherein the fixing mechanism (6) comprises a limiting column (6 b), a fastening nut (6 c) and two inserting columns (6 a), the two inserting columns (6 a) are respectively and fixedly arranged on the two positioning blocks (5 d), two through holes for the limiting column (6 b) to pass through are formed in the two inserting columns (6 a), the two through holes are coaxially arranged, the two inserting columns (6 a) pass through one side of the limiting column (6 b), an external thread is formed in the outer edge of one side of the limiting column (6 b), the fastening nut (6 c) is in threaded connection with the limiting column (6 b), and a pull ring (6 b 1) is fixedly arranged on the other side of the limiting column (6 b).

6. The engine flywheel lifting appliance according to claim 1, wherein the positioning frame (1) comprises a supporting frame (1 a), two arc-shaped supporting plates (1 b) and arc-shaped limiting plates (1 c), the two arc-shaped supporting plates (1 b) and the arc-shaped limiting plates (1 c) are fixedly arranged on the supporting frame (1 a), the two arc-shaped supporting plates (1 b) and the two arc-shaped limiting plates (1 c) are coaxially arranged, the two arc-shaped limiting plates (1 c) are located on the outer sides of the two arc-shaped supporting plates (1 b), and gaps smaller than the thickness of the arc-shaped supporting plates (1 b) are reserved between the inner edges of the arc-shaped limiting plates (1 c) and the outer edges of the arc-shaped supporting plates (1 b).