CN212557982U

CN212557982U - A material loading fixing device for engine shell

Info

Publication number: CN212557982U
Application number: CN202021207213.9U
Authority: CN
Inventors: 朴景宇
Original assignee: Beijing Dongnan Automobile Parts Co ltd
Current assignee: Beijing Dongnan Automobile Parts Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-19
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to a feeding and fixing device for an engine shell, which relates to the technical field of engine assembly and aims to solve the technical problems that the engine shell is unstable and is easy to deviate in the moving process; it includes the board, is provided with transport mechanism on the board, and transport mechanism is including being the chain of closed cyclic annular setting, a plurality of sprockets of meshing on the chain for the driving motor of drive chain motion, its characterized in that: the outer side of the chain is provided with a mounting plate, and the upper surface of the mounting plate is provided with a first characteristic fixing mechanism and a second characteristic fixing mechanism which are used for fixing the engine shell; the first characteristic fixing mechanism comprises a supporting component vertically arranged on the surface of the mounting plate, two clamping tongues are arranged on one side, facing the engine shell, of the supporting component, the two clamping tongues protrude out of the side wall of the supporting component, and two clamping blocks matched with the clamping tongues are further arranged between the two clamping tongues. The utility model discloses have and carry out the effect fixed to engine housing.

Description

A material loading fixing device for engine shell

Technical Field

The utility model belongs to the technical field of the technique of engine assembly and specifically relates to a material loading fixing device for engine shell is related to.

Background

The engine housing is covered outside the engine and has the functions of protecting the engine and reducing the noise of the engine. The quality of the engine shell directly affects the working environment of the engine and the working performance and the service life of each part of the engine.

The engine shell is generally cast in the production process, namely molten aluminum or molten iron is cast into a mold to wait for shaping, and a cast shell matrix is detected by workers after being cooled so as to ensure that the casting is uniform and has no bubbles or defects in the shaping process. After the detection is finished, the working personnel need to place the shell in the production line, and the shell is grabbed by the mechanical arm and then is subjected to processing treatment such as polishing, rust prevention and corrosion prevention in the later period.

The staff places the shell on the transfer board, and the transfer board is driven by the chain and moves the below of arm and awaits the snatching of arm, nevertheless because the surface unevenness of shell to lead to the shell to take place easily when the transfer board moves and heels or take place relative slip with the transfer board, thereby influence the stability that the arm snatched.

SUMMERY OF THE UTILITY MODEL

The fixed shakiness of engine case among the prior art, the skew condition takes place easily at the removal in-process, the utility model aims at providing a material loading fixing device for engine case, it has carries out the effect fixed to engine case.

The application provides a material loading fixing device for engine shell adopts following technical scheme:

the utility model provides a material loading fixing device for engine shell, includes the board, is provided with transport mechanism on the board, and transport mechanism is including being the chain of closed cyclic annular setting, a plurality of sprockets of meshing on the chain for the driving motor of drive chain motion, its characterized in that: the outer side of the chain is provided with a mounting plate, and the upper surface of the mounting plate is provided with a first characteristic fixing mechanism and a second characteristic fixing mechanism which are used for fixing the engine shell;

the first characteristic fixing mechanism comprises a supporting component vertically arranged on the surface of the mounting plate, two clamping tongues are arranged on one side, facing the engine shell, of the supporting component, the two clamping tongues protrude out of the side wall of the supporting component, and two clamping blocks matched with the clamping tongues are arranged between the two clamping tongues;

the second characteristic fixing mechanism comprises angle steel vertically arranged on the mounting plate, and a bearing block is arranged in an included angle of the angle steel.

By adopting the technical scheme, when a worker uses the first characteristic fixing mechanism to support and fix the engine shell, the worker firstly rotates the clamping tongues on the two supporting plates and enables the clamping tongues to protrude out of the outer side arm of the supporting component, and then places the engine shell on the first characteristic fixing mechanism. At the moment, the two clamping tongues are respectively positioned right below two adjacent fixed pipes on the engine shell and bear the end faces of the fixed pipes; one surface of the clamping block facing to the adjacent clamping tongue is attached to the circumferential surface of the fixed pipe, and the upper surface of the clamping block is clamped at the edge of the butt-joint frame. When the staff uses second characteristic mechanism to prop up engine housing, the staff adjusts the position of angle steel, and make the inside wall of angle steel paste each other with the lateral wall of fixed plate and lean on, accept the piece and be located the below of fixed plate and accept the screens to the fixed plate, mutually support and prop up engine housing through first characteristic fixed establishment and second characteristic fixed establishment, thereby improved the stability that engine housing placed, and then made things convenient for picking up of rear robotic arm to engine housing.

The present invention may be further configured in a preferred embodiment as: the supporting component comprises a first supporting plate, a second supporting plate is connected to the first supporting plate in a sliding mode perpendicular to the length direction of the first supporting plate, a plurality of sliding rods are fixedly connected to the first supporting plate in the direction towards the second supporting plate, and sliding holes for accommodating the sliding rods to slide are formed in the corresponding second supporting plate. The first supporting plate is rotatably connected with a screw rod, and the screw rod penetrates through the second supporting plate and is in threaded fit with the second supporting plate;

the two clamping tongues are respectively positioned on the first supporting plate and the second supporting plate, and the two clamping blocks are respectively and fixedly connected to the first supporting plate and the second supporting plate.

Through adopting above-mentioned technical scheme, the staff can revolve the interval of twisting screw rod regulation in first backup pad and the second backup pad support and then carry out the adaptation to the engine housing that the fixed pipe interval is different, has improved first characteristic fixed establishment's suitability.

The present invention may be further configured in a preferred embodiment as: the clamping tongue is rotatably connected with the first supporting plate or the second supporting plate, a fixing stud is fixedly connected onto the clamping tongue, penetrates out of the first supporting plate or the second supporting plate and is in threaded fit with a first fixing nut.

By adopting the technical scheme, the clamping tongue can rotate around the axis of the fixing stud and rotate out of the accommodating groove, and at the moment, a worker screws the first fixing nut to fix the clamping device. The clamping tongue is connected with the first supporting plate or the second supporting plate in a rotating mode, so that a worker can adjust the distance between the upper surface of the clamping tongue and the upper surface of the clamping block through rotating the clamping tongue, the clamping tongue is adaptive to the condition that the distance between the edge of the bearing frame and the end face of the fixing pipe on engine shells of different specifications is different, and the stability of the first characteristic fixing mechanism for fixing the engine shells of different specifications is improved.

The present invention may be further configured in a preferred embodiment as: a hole is formed in the side wall of one side of the angle steel, the length direction of the hole is parallel to the length direction of the angle steel, a sliding screw rod penetrates through the hole, the sliding screw rod is fixedly connected with the bearing block, and a second fixing nut is arranged on one side, deviating from the bearing block, of the angle steel.

Through adopting above-mentioned technical scheme, the screw rod that slides and strip hole mutually support, accept the piece and can be through the screw rod that slides in the strip hole to change and accept the height of piece apart from the mounting panel, and then adapt to the engine housing of multiple specification.

The present invention may be further configured in a preferred embodiment as: the mounting plate is also provided with a connecting assembly used for fixing the mounting plate and the first characteristic fixing mechanism or the second characteristic fixing mechanism, the connecting assembly comprises a connecting plate, and the connecting plate is provided with a clamping bolt and a clamping nut used for fixing the connecting plate and the mounting plate;

a plurality of connecting holes used for accommodating the connecting bolts to penetrate are formed in the mounting plate, and the connecting holes are concentrically arranged on the mounting plate in an arc shape.

By adopting the technical scheme, the fixing range of the connecting plate on the mounting plate is improved due to the arrangement of the connecting holes, so that the first characteristic fixing mechanism and the second characteristic fixing mechanism can be arranged at a plurality of positions above the mounting plate, and the irregular engine shell is adapted.

The present invention may be further configured in a preferred embodiment as: the connecting plate is provided with an adjusting hole, and the adjusting hole is a long-strip-shaped clamping bolt and penetrates through the adjusting hole and the connecting hole simultaneously.

Through adopting above-mentioned technical scheme, the adjustable scope of first characteristic fixed establishment and second characteristic fixed establishment has further been increased in setting up of regulation hole to make things convenient for the staff to fix the engine housing of different specifications.

The present invention may be further configured in a preferred embodiment as: and a guide wheel rolling on the surface of the machine table is arranged on the side wall of the mounting plate.

Through adopting above-mentioned technical scheme, when driving motor work and drive chain operation, the chain drives the mounting panel and is closed annular motion on the board surface. The guide wheel rolls on the surface of the workbench, so that the moving stability of the mounting plate is improved, and the bearing and fixing stability of the mounting plate on the engine shell is further improved.

The present invention may be further configured in a preferred embodiment as: the mounting plate is hinged with the chain.

Through adopting above-mentioned technical scheme, thereby the mounting panel is articulated each other with the chain and has made things convenient for the staff to wear to establish clamping bolt at the mounting panel, has improved the convenience of operation.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the engine shell is supported and fixed through the first characteristic fixing mechanism and the second characteristic fixing mechanism, so that the stability of placing the engine shell is improved, and the engine shell is conveniently conveyed to the mechanical arm by the conveying mechanism and picked up by the mechanical arm;

2. through coupling assembling's setting for first characteristic fixed establishment and second characteristic fixed establishment can install a plurality of positions departments at the mounting panel, thereby carry out the adaptation to the engine case of multiple specification, have improved material loading fixing device's functionality.

Drawings

FIG. 1 is a schematic structural view of an engine casing;

FIG. 2 is a schematic structural view of a feeding and fixing device;

FIG. 3 is an enlarged view of detail A of FIG. 2 and shows the mounting of the charging fixture to the engine casing;

FIG. 4 is a schematic structural view of a fixing mechanism embodying the first feature;

FIG. 5 is a schematic structural view of a fixing mechanism embodying the second feature;

FIG. 6 is a schematic view showing a connecting assembly

In the figure, 1, a butt-joint frame; 12. a first feature region; 121. a fixed tube; 13. a second feature region; 131. a fixing plate; 132. a fixing hole; 2. a machine platform; 3. a transport mechanism; 31. a chain; 32. a sprocket; 33. a drive motor; 4. mounting a plate; 41. a guide wheel; 42. connecting holes; 5. a first feature fixation mechanism; 51. a support assembly; 511. a first support plate; 512. a second support plate; 513. a slide bar; 514. a sliding hole; 515. a screw; 516. adjusting the screw hole; 517. screwing the head; 52. accommodating grooves; 53. a latch; 54. fixing the stud; 55. a first fixing nut; 56. a clamping block; 6. a second feature fixing mechanism; 61. angle steel; 62. a bearing block; 63. a bar hole; 64. sliding the screw rod; 65. a second fixing nut; 7. a connecting assembly; 71. a connecting plate; 72. an adjustment hole; 73. clamping the bolt; 74. and clamping the nut.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and fig. 2, for the utility model discloses a material loading fixing device for engine shell for accept fixedly to engine shell, make things convenient for engine shell to operate on the assembly line and snatch by the arm on the rear station. In order to facilitate the butt joint of the engine shell with other shells, a butt joint frame 1 is generally fixedly connected to the edge, the outer peripheral surface of the butt joint frame 1 protrudes out of the engine shell, and a characteristic region in butt joint with other shells is arranged on the outer peripheral surface of the butt joint frame 1, and the characteristic region can be divided into a first characteristic region 12 and a second characteristic region 13 according to the structure. The first characteristic region 12 includes a plurality of fixing tubes 121 fixed to the outer peripheral surface of the docking frame 1, and a part of the peripheral surface of the fixing tubes 121 is located in the docking frame and a part of the peripheral surface protrudes from the docking frame. A certain interval is left between the plurality of fixing tubes 121. The second characteristic region 13 includes a fixing plate 131 fixedly connected to the corner of the docking frame 1, the fixing plate 131 is a right triangle and the right end is far away from the docking frame 1, and a fixing hole 132 is formed in the fixing plate 131. The fixing tube 121, the fixing plate 131, the docking frame 1 and the engine housing are integrally formed.

As shown in fig. 2 and 3, the feeding fixing device includes a machine table 2, a conveying mechanism 3 is disposed on the machine table 2, a mounting plate 4 is disposed on the conveying mechanism 3, and a plurality of first feature fixing mechanisms 5 for fixing the engine casing in a blocking manner with respect to a first feature area 12 and a plurality of second feature fixing mechanisms 6 for fixing the engine casing in a blocking manner with respect to a second feature area 13 are disposed on the mounting plate 4.

As shown in fig. 2, the conveying mechanism 3 includes a closed ring-shaped chain 31 disposed on the worktable, the inner ring of the chain 31 is provided with a plurality of chain wheels 32, and the chain wheels 32 are rotatably connected with the machine table 2. One of the chain wheels 32 is coaxially and fixedly connected with a driving motor 33 for driving the chain wheel 32 to rotate. The mounting plate 4 is a rectangular plate, and the mounting plate 4 is located outside the chain 31 and is hinged to the chain 31. The hinge shaft between the mounting plate 4 and the chain 31 is provided along the extending direction of the chain 31. The mounting plate 4 is further rotatably connected with four guide wheels 41, the four guide wheels 41 are distributed on two opposite side walls of the mounting plate 4 in pairs, the rotating shafts of the guide wheels 41 are perpendicular to the chain 31, and the peripheral surfaces of the guide wheels 41 are attached to the surface of the machine table 2. When the driving motor 33 is operated and the driving chain 31 is operated, the chain 31 drives the mounting plate 4 to make a closed circular motion on the surface of the machine table 2. The guide wheel 41 rolls on the surface of the workbench, so that the moving stability of the mounting plate 4 is improved, and the bearing and fixing stability of the mounting plate 4 to the engine shell is further improved.

As shown in fig. 4, the first feature fixing mechanism 5 includes a supporting component 51 erected on the mounting plate 4, the supporting component 51 includes a first supporting plate 511 and a second supporting plate 512, the length directions of the first supporting plate 511 and the second supporting plate 512 are both perpendicular to the plane of the mounting plate 4, two sliding rods 513 are fixedly connected to one side of the first supporting plate 511 facing the second supporting plate 512, a sliding hole 514 is formed in the corresponding second supporting plate 512 for accommodating the sliding rod 513 to be inserted, the sliding rod 513 is inserted into the sliding hole 514 so as to enable the first supporting plate 511 and the second supporting plate 512 to be connected in a sliding manner, a screw 515 is further rotatably connected to one side of the first supporting plate 511 facing the second supporting plate 512, the axis in the screw 515 is parallel to the axis of the sliding rod 513, and an adjusting screw hole 516 is formed in the corresponding second supporting plate 512 for accommodating the screw 515 to be inserted and threadedly engaged with the screw. Through the screw thread fit of screw 515 with adjust screw 516, the staff can twist screw 515 and adjust the interval in first backup pad 511 and the second backup pad 512 support and then carry out the adaptation to the engine shell that the fixed pipe 121 interval is different, has improved the suitability of first characteristic fixed establishment 5. The end of the screw 515 far away from the first support plate 511 is also coaxially and fixedly connected with a hexagonal prism-shaped screw head 517. An accommodating groove 52 is formed in one end of the first supporting plate 511, which is far away from the bottom machine table 2, a locking tongue 53 is rotatably connected in the accommodating groove 52, a fixing stud 54 is fixedly connected to one side of the locking tongue 53, the fixing stud 54 penetrates out of the first supporting plate 511 from the inner wall of the accommodating groove 52, and a first fixing nut 55 is in threaded fit with the outer wall of the first supporting plate 511. The latch 53 can be rotated about the axis of the fixing stud 54 and rotated out of the receiving groove 52, whereupon the worker screws the first fixing nut 55 to fix the latch. When the latch 53 is rotated out of the receiving groove 52, the latch 53 protrudes from the first support plate 511 and latches the end of the fixing tube 121 of the engine case. A clamping block 56 is further fixedly connected to a side of the first support plate 511 facing away from the first fixing nut 55, and the clamping block 56 protrudes out of the side wall of the first support plate 511 and clamps the edge of the bearing frame of the engine housing. The end of the second support plate 512 away from the machine platform 2 is also provided with the latch tongue 53 and the latch block 56, and the mounting structure of the latch tongue 53 and the latch block 56 is similar to the mounting structure of the second support plate 512 and the mounting structure of the first support plate 511, and therefore, the description is omitted, and the two latch blocks 56 on the first support plate 511 and the second support plate 512 are located between the two latch tongues 53.

When the worker fixes the engine case using the first feature fixing mechanism 5, the worker first rotates the locking tongues 53 of the two support plates to protrude from the outer arms of the first support plate 511 or the second support plate 512. Then, the distance between the first support plate 511 and the second support plate 512 is adjusted, and finally, the engine case is placed on the first feature fixing mechanism 5. At this time, the two locking tongues 53 on the first supporting plate 511 and the second supporting plate 512 are respectively positioned right below two adjacent fixing tubes 121 on the engine case, and support the end surfaces of the fixing tubes 121; one surface of the fixture block 56 facing the adjacent fixture tongue 53 is abutted against the peripheral surface of the fixing tube 121, and the upper surface of the fixture block 56 is clamped at the edge of the docking frame 1. The first feature fixing member may be provided in plural so as to fix the engine case by the mutual engagement of plural first feature fixing mechanisms 5. The latch tongue 53 is rotatably connected with the first support plate 511 or the second support plate 512, so that a worker can adjust the distance between the upper surface of the latch tongue 53 and the upper surface of the fixture block 56 by rotating the latch tongue 53, thereby adapting to the situation that the distances between the edge of the bearing frame on the engine housings of different specifications and the end surface of the fixing pipe 121 are different, and improving the stability of the first characteristic fixing mechanism 5 for fixing the engine housings of different specifications.

As shown in fig. 5, the second characteristic fixing mechanism 6 includes an angle steel 61 vertically disposed on the mounting plate 4, a receiving block 62 for receiving by a fixing plate 131 is disposed inside an included angle of the angle steel 61, the receiving block 62 is connected to the angle steel 61 in a sliding manner, a hole 63 is disposed on the angle steel 61, and a length direction of the hole 63 is disposed along a length direction of the angle steel 61. A sliding screw rod 64 is arranged in the strip hole 63, the end part of the sliding screw rod 64 is fixedly connected with the side wall of the bearing block 62, a second fixing nut 65 is further arranged on the outer side of the angle steel 61, and the second fixing nut 65 is sleeved on the sliding screw rod 64 and fixes the bearing block 62 and the angle steel 61 mutually. The sliding screw 64 is matched with the strip hole 63, and the bearing block 62 can slide in the strip hole 63 through the sliding screw 64, so that the height of the bearing block 62 from the mounting plate 4 is changed, and further the engine shells of various specifications are adapted.

As shown in fig. 6, the mounting plate 4 is further provided with a connecting assembly 7 for fixing the first feature fixing mechanism 5 or the second feature fixing mechanism 6, the connecting assembly 7 includes a connecting plate 71 abutting against the surface of the mounting plate 4, and the connecting plate 71 is located on a surface of the first support plate 511 or the angle iron 61 facing the mounting plate 4 and is fixedly connected with the corresponding first support plate 511 or the angle iron 61. An adjusting hole 72 is formed in the connecting plate 71, and the adjusting hole 72 is long. The length direction of the adjusting hole 72 of the connecting plate 71 fixedly connected below the first characteristic fixing mechanism 5 is vertical to the plane of the first supporting plate 511; the connecting plate 71 is fixedly connected to the lower side of the second characteristic fixing mechanism 6, the length direction of the adjusting hole 72 is parallel to the angular bisector of the angle steel 61, and the connecting assembly 7 further comprises a clamping bolt 73 and a clamping nut 74 for connecting the connecting plate 71 and the mounting plate 4 with each other.

As shown in fig. 6, the mounting plate 4 is provided with a plurality of connecting holes 42, the connecting holes 42 are arc-shaped, and the arcs where the plurality of connecting holes 42 are located are concentric. The connecting holes 42 are divided into three groups according to the length of the curvature radius, and each group of connecting holes 42 are uniformly distributed around the circle center. The clamping bolt 73 passes through both the connecting hole 42 and the bar hole 63 and cooperates with the clamping nut 74 to clamp and fix the mounting plate 4 and the connecting plate 71. The arrangement of the attachment holes 42 improves the attachment range of the attachment plate 71 to the attachment plate 4, so that the first feature attaching mechanism 5 and the second feature attaching mechanism 6 can be attached at a plurality of positions above the attachment plate 4 to accommodate irregular engine housings. The arrangement of the adjusting hole 72 further increases the adjustable range of the first characteristic fixing mechanism 5 and the second characteristic fixing mechanism 6, thereby facilitating the fixing of engine housings of different specifications by workers. Because the mounting plate 4 is hinged to the chain 31, the clamping bolt 73 can be conveniently penetrated into the mounting plate 4 by a worker, and the operation convenience is improved.

The first feature fixing mechanism 5 and the second feature fixing mechanism 6 are provided in plural, and when the fixing device fixedly supports the engine case, the sum of the first feature fixing mechanism 5 and the second feature fixing mechanism 6 must be not less than three in order to improve the stability of support fixation. After the engine housing moves to the designated position of the workbench along with the chain 31, the mechanical arm grabs the engine housing so as to carry out the processing of polishing, rust prevention and the like at the later stage.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a material loading fixing device for engine shell, includes board (2), is provided with transport mechanism (3) on board (2), and transport mechanism (3) are including being chain (31) of closed cyclic annular setting, a plurality of sprocket (32) of meshing on chain (31) for driving motor (33) of chain (31) motion, its characterized in that: a mounting plate (4) is arranged on the outer side of the chain (31), and a first characteristic fixing mechanism (5) and a second characteristic fixing mechanism (6) for fixing an engine shell are arranged on the upper surface of the mounting plate (4);

the first characteristic fixing mechanism (5) comprises a supporting component (51) vertically arranged on the surface of the mounting plate (4), wherein two clamping tongues (53) are arranged on one side, facing the engine shell, of the supporting component (51), the two clamping tongues (53) protrude out of the side wall of the supporting component (51), and two clamping blocks (56) matched with the clamping tongues (53) are further arranged between the two clamping tongues (53);

the second characteristic fixing mechanism (6) comprises an angle steel (61) vertically arranged on the mounting plate (4), and a bearing block (62) is arranged in an included angle of the angle steel (61).

2. A feeding fixture for an engine casing, as set forth in claim 1, wherein: the supporting component (51) comprises a first supporting plate (511), a second supporting plate (512) is connected to the first supporting plate (511) in a sliding mode perpendicular to the length direction of the first supporting plate (511), a plurality of sliding rods (513) are fixedly connected to the first supporting plate (511) in the direction towards the second supporting plate (512), sliding holes (514) for accommodating the sliding rods (513) to slide are formed in the corresponding second supporting plate (512), a screw rod (515) is rotatably connected to the first supporting plate (511), and the screw rod (515) penetrates through the second supporting plate (512) and is in threaded fit with the second supporting plate (512);

the two clamping tongues (53) are respectively positioned on the first supporting plate (511) and the second supporting plate (512), the two clamping blocks (56) are respectively fixedly connected to the first supporting plate (511) and the second supporting plate (512), and the clamping block (56) is positioned between the two clamping tongues (53).

3. A feeding fixture for an engine casing, as set forth in claim 1, wherein: the clamp tongue (53) is rotatably connected with the first support plate (511) or the second support plate (512), a fixing stud (54) is fixedly connected to the clamp tongue (53), and the fixing stud (54) penetrates through the first support plate (511) or the second support plate (512) and is in threaded fit with a first fixing nut (55).

4. A feeding fixture for an engine casing, as set forth in claim 1, wherein: a hole (63) is formed in the side wall of one side of the angle steel (61), the length direction of the hole (63) is parallel to the length direction of the angle steel (61), a sliding screw rod (64) penetrates through the hole (63), the sliding screw rod (64) is fixedly connected with the bearing block (62), and a second fixing nut (65) is arranged on one side, deviating from the bearing block (62), of the angle steel (61).

5. A feeding fixture for an engine casing, as set forth in claim 1, wherein: the mounting plate (4) is further provided with a connecting assembly (7) used for fixing the mounting plate (4) and the first characteristic fixing mechanism (5) or the second characteristic fixing mechanism (6), the connecting assembly (7) comprises a connecting plate (71), and the connecting plate (71) is provided with a clamping bolt (73) and a clamping nut (74) used for fixing the connecting plate (71) and the mounting plate (4);

a plurality of connecting holes (42) used for accommodating connecting bolts to penetrate are formed in the mounting plate (4), and the connecting holes (42) are concentrically arranged on the mounting plate (4) in an arc shape.

6. A loading fixture for an engine casing as claimed in claim 5, wherein: an adjusting hole (72) is formed in the connecting plate (71), the adjusting hole (72) is long-strip-shaped, and the clamping bolt (73) penetrates through the adjusting hole (72) and the connecting hole (42) simultaneously.

7. A feeding fixture for an engine casing, as set forth in claim 1, wherein: and a guide wheel (41) rolling on the surface of the machine table (2) is arranged on the side wall of the mounting plate (4).

8. A feeding fixture for an engine casing, as set forth in claim 7, wherein: the mounting plate (4) is hinged with the chain (31).