Engine overturning equipment

Abstract

The invention provides engine overturning equipment, and relates to the technical field of engine production auxiliary equipment, the engine overturning equipment comprises an overturning structure and a ground roller conveyor, the overturning structure comprises a first disc, a second disc, a side plate, an overturning roller conveyor and cohesion control assemblies, and each of the two cohesion control assemblies comprises a seat frame, a hydraulic push rod and a push plate; according to the technical key points, the engine cylinder block is hoisted to the top of the ground roller conveyor through an engine hoisting tool, the engine cylinder block is conveyed to the position between the two ground roller conveyors through the ground roller conveyor, the movable ends of hydraulic push rods on the two cohesion control assemblies are retracted into the fixed ends, and the included angle between the two push plates is driven to be reduced; the two turnover roller conveyors can get close to each other to clamp the engine cylinder body, then the turnover structure rotates on the inner side of the bearing support to complete turnover work of the engine cylinder body, manual participation of workers is not needed in the whole process, and high efficiency and rapidness are achieved.

Description

Technical Field

[0001] This invention relates to the field of auxiliary equipment technology for engine production, specifically an engine tilting device. Background Technology

[0002] An engine, as a machine that converts other forms of energy into mechanical energy, can be defined as a power generating device or the entire machine including the power generating device. Automobile engines can be divided into two main categories: gasoline engines and diesel engines. They share the same basic structure, consisting of two main mechanisms and five major systems: the crankshaft and connecting rod mechanism, the valve train, the fuel supply system, the lubrication system, the cooling system, the ignition system, and the starting system.

[0003] As the core of a vehicle's power system, the engine's working principle, type, and maintenance have a significant impact on its performance and lifespan. As the heart of a product, the engine determines its power, economy, stability, and environmental friendliness. Based on the power source, engines can be categorized into diesel engines, gasoline engines, electric motors for electric vehicles, and hybrid engines, among others.

[0004] In the engine production process, various components need to be assembled onto the cylinder block. For the cylinder block, it is necessary to install a tilting support component. The traditional production method of manual handling and tilting requires the cooperation of multiple workers and the assistance of tooling (support tooling, hoisting tooling) to complete a series of operations. Therefore, the high difficulty of operation, the overall labor-intensive work, and the low safety have become common problems in engine production. The comparative document describes an engine cylinder block tilting device (announcement number CN114505823A), which can greatly increase the operating efficiency by installing the engine cylinder block into the tilting device and rotating it together with the tilting device. However, the installation between the engine cylinder block and the tilting device still presents the problem of difficult handling. Summary of the Invention

[0005] To overcome the shortcomings of existing engine production processes, which, although using a tilting device can reduce the difficulty of engine tilting and achieve labor-saving effects, still require considerable effort in the entire production process, including the lifting of the engine block from the fixture and its placement into the tilting device. This application provides an engine tilting device. When the engine block is lifted to the top of the ground roller conveyor using the engine lifting fixture, the movable ends of the hydraulic push rods on the two clamping control components extend, pushing the two push plates to widen the included angle and causing the two tilting roller conveyors to move away from each other under the guidance of the guide rods. The ground roller conveyor then transports the engine block between the two conveyors. As the movable ends of the hydraulic push rods on the two clamping control components retract to the inside of the fixed end, the included angle of the two push plates narrows, causing the two tilting roller conveyors to move closer together and clamp the engine block. Finally, the tilting structure rotates inside the support bracket to complete the tilting of the engine block. The entire process requires no manual intervention from workers, significantly reducing their labor intensity.

[0006] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0007] An engine tipping device includes a tipping structure and a ground roller conveyor, wherein the ground roller conveyor is disposed on one side of the tipping structure;

[0008] A flipping bracket is provided on the outside of the flipping structure, and a support bracket is welded to the bottom of the flipping bracket. The flipping structure includes a first disc and a second disc. Both the first disc and the second disc have conveying windows inside. Two side plates, which are vertical and symmetrically arranged on both sides of the conveying windows, are welded to the first disc and the second disc. Both side plates have movable windows inside. A flipping roller conveyor that is parallel to each other and horizontal is provided between the two side plates. A clamping control component is provided on the surface of both side plates.

[0009] A gear ring is machined on the outer wall of the side of the second disk facing the first disk. A transmission chain is meshed with the outside of the gear ring. A gear is meshed with the inner side of the top of the transmission chain. A geared motor is assembled and connected to one side of the gear.

[0010] Three positioning rollers are provided on the outer side of the second disc and the gear ring;

[0011] The geared motor is mounted on the top of the support bracket, and the three positioning rollers are assembled and fixed to the support bracket in a triangular shape. The top of the ground roller conveyor and the bottom of the tilting roller conveyor are in a horizontal plane. The engine block is placed on the top of the ground roller conveyor by a hoisting fixture and transported between the two tilting roller conveyors.

[0012] In one possible implementation, both of the engagement control components include a U-shaped frame with a hydraulic push rod mounted on the outer side of the frame. One side of the movable end of the hydraulic push rod passes through the interior of the frame and is hinged to two push plates. Both of the flipping roller conveyors include two seat bars with multiple conveying rollers disposed between the two seat bars.

[0013] The seat frame is assembled and fixed to the side plate on one side, and the two push plates are V-shaped, with one end passing through the interior of the movable window and hinged to the seat bars on the two flip roller conveyors.

[0014] In one possible implementation, guide components are provided between the four corners of the upper and lower flip roller conveyors. Each guide component includes a fixed seat, and the top and bottom of the fixed seat are integrally formed with guide rods. The fixed seat is assembled and fixed to the second disc or the first disc inside the conveying window.

[0015] In one possible implementation, bushings are sleeved to the outside of one end of each of the two guide rods, and the bushings are pinned to the inside of one end of the seat bar, with the seat bar slidably connected to the outside of the guide rods via the bushings.

[0016] In one possible implementation, an auxiliary frame plate is movably connected to the inner side of the seat frame. Four limiting rods are welded to the side of the auxiliary frame plate facing the fixed end of the hydraulic push rod. Springs are sleeved on the outside of each of the four limiting rods. The four limiting rods are located at the four corners of the auxiliary frame plate and are movably connected inside the seat frame. The springs are supported between the inner wall of the seat frame and the surface of the auxiliary frame plate.

[0017] In one possible implementation, four extension sleeves are welded to the surface of the frame away from the two auxiliary frame plates, and the four extension sleeves slide inside the four extension sleeves respectively.

[0018] In one possible implementation, a limit sleeve is welded to the center of the surface of the auxiliary frame on the side away from the seat, and the limit sleeve is supported between the movable end of the hydraulic push rod and the hinge point of the two push plates.

[0019] In one possible implementation, an infrared sensor is internally mounted on the side of the auxiliary frame away from the second disc, with one end of the infrared sensor facing between the two tilting roller conveyors, monitoring the engine block moving from the top of the ground roller conveyor towards the space between the two tilting roller conveyors.

[0020] In one possible implementation, limit arms are hinged to the surfaces of both ends of the auxiliary frame away from the base, and the limit arms have slots inside. Two supports symmetrically arranged on both sides of the movable window are welded to the surface of the side plate, and support rods are pin-connected to the interior of the two supports. The support rods pass through the interior of the slots, and the limit arms are slidably connected to the exterior of the support rods through the slots.

[0021] In one possible implementation, a wheel is internally hinged at the end of the limiting arm away from the auxiliary frame plate, the wheel consisting of an outer rubber wheel and a central metal ring.

[0022] The beneficial effects of this application are as follows:

[0023] Firstly, in this solution, when the engine block is hoisted to the top of the ground roller conveyor by the engine hoisting fixture, the movable ends of the hydraulic push rods on the two clamping control components extend, pushing the two push plates to widen the included angle and causing the two tilting roller conveyors to move away from each other under the guidance of the guide rod. Then, the ground roller conveyor transports the engine block between the two. When the movable ends of the hydraulic push rods on the two clamping control components retract into the interior of the fixed end, driving the two push plates to narrow the included angle, the two tilting roller conveyors move closer to each other to clamp the engine block. Then, the tilting structure rotates inside the support bracket to complete the tilting of the engine block. The entire process does not require manual intervention from the staff, which greatly reduces the labor intensity of the staff and solves the problem that the existing engine block tilting process still requires a lot of physical effort to install inside the equipment.

[0024] Secondly, in this solution, when the movable end of the hydraulic push rod is retracted to the fixed end, pressure is applied to the limit sleeve by the hinge point between the movable end of the hydraulic push rod and the push plate, so that the auxiliary frame plate controls the limit arm to rotate around the support rod, causing the wheel hinged to one end of the limit arm to abut against the engine cylinder between the two tilting roller conveyors, restricting it from sliding to the bottom between the two tilting roller conveyors during the tilting process, thus ensuring safety. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of an engine tilting device according to the present invention;

[0026] Figure 2 This is a schematic diagram of the flipping structure of an engine flipping device according to the present invention;

[0027] Figure 3 This is a schematic diagram showing the connection between the engagement control component and the tilting roller conveyor of an engine tilting device according to the present invention.

[0028] Figure 4 This is a schematic diagram of the engagement control component of an engine rollover device according to the present invention;

[0029] Figure 5 This is a plan view of a clamping control component for an engine rollover device according to the present invention.

[0030] Figure label:

[0031] 1. Tilting structure; 101. First disc; 102. Clamping control assembly; 1021. Hydraulic push rod; 1022. Support; 1023. Push plate; 1024. Auxiliary frame plate; 1025. Infrared sensor; 1026. Support rod; 1027. Limiting arm; 1028. Wheel; 1029. Spring; 1030. Limiting rod; 1031. Extension sleeve; 1032. Seat frame; 1033. Limiting stop sleeve; 103. Positioning roller; 104. Transmission chain; 105. Gear; 106. Gear motor; 107. Gear ring; 108. Second disc; 109. Guide assembly; 1091. Guide rod; 1092. Fixed seat; 1093. Bushing; 110. Tilting roller conveyor; 1101. Seat bar; 1102. Conveying roller;

[0032] 2. Tilting support; 3. Ground roller conveyor; 4. Support support; 5. Conveying window; 6. Movable window; 7. Side plate; 8. Trough. Detailed Implementation

[0033] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0034] Example 1:

[0035] This embodiment describes the specific structure of an engine tilting device, as detailed in the following reference. Figures 1-5 As shown, the structure includes a tilting structure 1 and a ground roller conveyor 3, which are disposed on one side of the tilting structure 1. A tilting bracket 2 is disposed on the outer side of the tilting structure 1. A support bracket 4 is welded to the bottom of the tilting bracket 2. The tilting structure 1 includes a first disc 101 and a second disc 108. A gear ring 107 is machined on the outer wall of the second disc 108 facing the first disc 101. A transmission chain 104 is meshed on the outer side of the gear ring 107. A gear 105 is meshed on the inner side of the top of the transmission chain 104. A gear reduction motor 106 is assembled on one side of the gear 105. Three positioning rollers 103 are disposed on the outer side of the second disc 108 and the gear ring 107.

[0036] The first disk 101 and the second disk 108 are both provided with conveying windows 5. The first disk 101 and the second disk 108 are connected by welding with two side plates 7 that are vertical and symmetrically arranged on both sides of the conveying window 5. The two side plates 7 are both provided with movable windows 6. A flipping roller conveyor 110 that is parallel to each other and horizontal is provided between the two side plates 7. The surface of the two side plates 7 is provided with a clamping control component 102.

[0037] In this configuration, by mounting the geared motor 106 to the top of the support bracket 4, and fixing the three positioning rollers 103 in a triangular configuration to the support bracket 4, when the geared motor 106 drives the gear ring 107 to rotate through the gear 105 and the transmission chain 104, the second disc 108 can rotate between the three positioning rollers 103. With the two side plates 7 connecting the first disc 101 and the second disc 108, the flipping structure 1 can rotate inside the support bracket 4.

[0038] Secondly, the top of the ground roller conveyor 3 and the bottom of the tilting roller conveyor 110 are in the horizontal plane. When the engine cylinder is placed on the top of the ground roller conveyor 3 by the hoisting fixture, it can be transported between the two tilting roller conveyors 110 without the need for personnel to operate and transfer. Only mechanical drive control is required, which is conducive to its application in automated and semi-automated production lines.

[0039] like Figures 3 to 5 As shown, both clamping control components 102 include a U-shaped frame 1032. A hydraulic push rod 1021 is mounted on the outer side of the frame 1032. Two push plates 1023 are hinged to one side of the movable end of the hydraulic push rod 1021 through the interior of the frame 1032. Both tilting roller conveyors 110 include two seat bars 1101. Multiple conveying rollers 1102 are arranged between the two seat bars 1101 (and also include motors, transmission components, etc., which are prior art and will not be described in detail).

[0040] Guide components 109 are provided between the four corners of the two upper and lower tilting roller conveyors 110. The guide components 109 include a fixed seat 1092. The top and bottom of the fixed seat 1092 are integrally formed with guide rods 1091. The outer side of one end of each of the two guide rods 1091 is sleeved with a bushing 1093. The bushing 1093 is pinned to the inside of one end of the seat bar 1101.

[0041] One side of the seat frame 1032 is assembled and fixed with the side plate 7. The fixed seat 1092 is assembled and fixed with the second disc 108 or the first disc 101 inside the conveying window 5. After the two push plates 1023 are V-shaped and one end passes through the inside of the movable window 6 and is hinged and fixed to the seat bar 1101 on the two flip roller conveyors 110, the movable end of the hydraulic push rod 1021 can be retracted into the fixed end to control the two push plates 1023 to reduce the angle, so that the seat bar 1101 is slidably connected to the outside of the guide rod 1091 by means of the bushing 1093, so that the two flip roller conveyors 110 are close to each other.

[0042] Meanwhile, under normal conditions, the movable end of the hydraulic push rod 1021 is retracted inside the fixed end, while the two tilting roller conveyors 110 remain close to each other. When the engine cylinder is placed on top of the ground roller conveyor 3, the entire system is started, and the movable end of the hydraulic push rod 1021 extends from inside the fixed end, causing the push plate 1023 to push the two tilting roller conveyors 110 away from each other, supporting the engine cylinder to be transported from the ground roller conveyor 3 to between the two tilting roller conveyors 110.

[0043] Secondly, in order to assist the hydraulic push rod 1021 in controlling the push plate 1023 to drive the two tilting roller conveyors 110 to move, such as Figure 4 As shown, an auxiliary frame plate 1024 is movably connected to the inner side of the seat 1032. Four limiting rods 1030 are welded to the side of the auxiliary frame plate 1024 facing the fixed end of the hydraulic push rod 1021. Springs 1029 are sleeved on the outside of each of the four limiting rods 1030. By positioning the four limiting rods 1030 at the four corners of the auxiliary frame plate 1024 and movably connecting them inside the seat 1032, and by means of the springs 1029 supporting them between the inner wall of the seat 1032 and the surface of the auxiliary frame plate 1024, the movable end of the hydraulic push rod 1021 can withstand the gravity applied to the push plate 1023 by the turning roller conveyor 110 when it extends from the inside of the fixed end.

[0044] Meanwhile, with the help of the spring 1029 supported between the inner side of the seat frame 1032 and the auxiliary frame plate 1024, the limit rod 1030 can reciprocate inside the seat frame 1032, and maintain a synchronous movement with the movable end of the hydraulic push rod 1021.

[0045] In addition, to limit the swaying of the auxiliary support plate 1024 outside the movable end of the hydraulic push rod 1021, such as Figure 5As shown, a limit sleeve 1033 is welded to the center of the surface of the auxiliary frame plate 1024 away from the seat 1032. The limit sleeve 1033 is supported between the movable end of the hydraulic push rod 1021 and the hinge point of the two push plates 1023, which can stably fit the auxiliary frame plate 1024 outside the movable end of the hydraulic push rod 1021 without fixing the auxiliary frame plate 1024 to the movable end of the auxiliary frame plate 1024.

[0046] Furthermore, in order to improve the stability of the limit rod 1030 sliding inside 1302, such as Figure 4 As shown, four extension sleeves 1031 are welded to the surface of the seat frame 1032 away from the two auxiliary frame plates 1024. By allowing the four extension sleeves 1031 to slide into the interior of the four extension sleeves 1031 respectively, the contact area between the limiting rod 1030 and the seat frame 1032 is increased, which helps to improve the stability of the limiting rod 1030 moving inside the seat frame 1032.

[0047] In some examples, an infrared sensor 1025 is internally mounted on the side of the auxiliary frame plate 1024 away from the second disk 108;

[0048] Specifically, by positioning one end of the infrared sensor 1025 between the two tilting roller conveyors 110, the sensor monitors the engine cylinder moving from the top of the ground roller conveyor 3 between the two tilting roller conveyors 110. When the engine cylinder is conveyed between the tilting roller conveyors 110 and sensed by the infrared sensor 1025, the two clamping control components 102 are activated. This causes the movable end of the hydraulic push rod 1021 on the two clamping control components 102 to retract into the interior of the fixed end, causing the two tilting roller conveyors 110 to move closer to each other and clamp and fix the engine cylinder. This supports the rotation of the engine cylinder when the tilting structure 1 rotates inside the support bracket 4.

[0049] The above design utilizes existing engine lifting fixtures to lift the engine block to the top of the ground roller conveyor 3. The movable ends of the hydraulic push rods 1021 on the two clamping control components 102 extend, pushing the two push plates 1023 to widen the included angle and push the two tilting roller conveyors 110 away from each other under the guidance of the guide rod 1091. Subsequently, the ground roller conveyor 3 transports the engine block between the two 10s. When the infrared sensor 1025 detects the engine block, the movable ends of the hydraulic push rods 1021 on the two clamping control components 102 retract into the interior of the fixed end, driving the two push plates 1023 to narrow the included angle, so that the two tilting roller conveyors 110 come closer to each other to clamp the engine block. The auxiliary frame plate 1024 compresses the four springs 1029, causing the limit rod 1030 to slide inside the seat frame 1032.

[0050] When the geared motor 106 drives the gear ring 107 to rotate through the gear 105 and the transmission chain 104, the second disc 108 can rotate between the three positioning rollers 103. With the two side plates 7 connecting the first disc 101 and the second disc 108, the flipping structure 1 can rotate inside the support bracket 4, and the engine cylinder between the two flipping roller conveyors 110 can complete the flipping operation. No staff intervention is required throughout the process, which is conducive to the fully automatic or semi-automatic production of the production line where the engine cylinder is located, and greatly reduces the labor intensity of the staff.

[0051] Example 2:

[0052] Based on Example 1, this example introduces auxiliary components during the engine block flipping process, such as... Figures 2 to 5 As shown, the auxiliary frame plate 1024 has a limit arm 1027 hinged to the side surface away from the seat 1032 at both ends. The limit arm 1027 has a strip groove 8 inside. The side plate 7 has two supports 1022 symmetrically arranged on both sides of the movable window 6 welded to the surface. The two supports 1022 are pin-connected to the support rod 1026 inside.

[0053] In this configuration, the support rod 1026 passes through the inside of the strip groove 8, and the limiting arm 1027 is slidably connected to the outside of the support rod 1026 through the strip groove 8. When the movable end of the hydraulic push rod 1021 is retracted to the fixed end, the hinge point between the movable end of the hydraulic push rod 1021 and the push plate 1023 applies pressure to the limiting sleeve 1033, causing the auxiliary frame plate 1024 to compress the four springs 1029, and simultaneously controlling the limiting arm 1027 to rotate around the support rod 1026, abutting against the engine cylinder between the two tilting roller conveyors 110, thus restricting its sliding to the bottom between the two tilting roller conveyors 110 during the tilting process (when the two tilting roller conveyors 110 are in an inclined state), ensuring safety.

[0054] Secondly, by hinged wheel 1028 inside the end of the limiting arm 1027 away from the auxiliary frame plate 1024, and making wheel 1028 consist of an outer rubber wheel and a central metal ring, the metal ring serves as a support while the rubber wheel remains deformable, which can help clamp the engine cylinder block. When the engine cylinder block rotates with the two tilting roller conveyors 110, there will be no movement of the engine cylinder block due to the tilting of the tilting roller conveyors 110.

[0055] The above design utilizes the hinge point between the movable end of the hydraulic push rod 1021 and the push plate 1023 to apply pressure to the limiting sleeve 1033 when the movable end of the hydraulic push rod 1021 is retracted to the fixed end. This causes the auxiliary frame plate 1024 to compress the four springs 1029 and simultaneously control the limiting arm 1027 to rotate around the support rod 1026. This causes the wheel 1028, which is hinged to one end of the limiting arm 1027, to abut against the engine cylinder between the two tilting roller conveyors 110, restricting it from sliding to the bottom between the two tilting roller conveyors 110 during the tilting process. This prevents the engine cylinder from moving due to the tilting of the tilting roller conveyor 110, thus ensuring safety.

[0056] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An engine roll-over device, characterized by, Include: Turnover structure (1); Ground roller conveyor (3) is arranged on one side of turnover structure (1); The outer side of the turnover structure (1) is provided with a turnover support (2), and the bottom of the turnover support (2) is weldedly connected with a supporting bracket (4). The turnover structure (1) comprises a first disc (101) and a second disc (108), the interiors of the first disc (101) and the second disc (108) are both provided with a conveying window (5), and the first disc (101) and the second disc (108) are weldedly connected with two side plates (7) which are in a vertical state and symmetrically arranged on both sides of the conveying window (5). The interiors of the two side plates (7) are both provided with a movable window (6), and the two side plates (7) are provided with a turnover roller conveyor (110) which is parallel to each other and in a horizontal state. The surfaces of the two side plates (7) are both provided with a clamping control assembly (102); The outer wall of the side of the second disc (108) facing the first disc (101) is processed with a gear ring (107), the outer part of the gear ring (107) is meshingly connected with a transmission chain (104), the inner side of the top of the transmission chain (104) is meshingly connected with a gear (105), and the side of the gear (105) is assembledly connected with a speed reducer motor (106); The outer sides of the second disc (108) and the gear ring (107) are provided with three positioning rollers (103); Wherein, the speed reducer motor (106) is assembled to the top of the supporting bracket (4), the three positioning rollers (103) are assembled and fixed with the supporting bracket (4) in a triangular shape, the top of the ground roller conveyor (3) and the turnover roller conveyor (110) at the bottom are in a horizontal plane, the engine cylinder is placed on the top of the ground roller conveyor (3) by hoisting tooling, and is conveyed between the two turnover roller conveyors (110).

2. An engine roll-over device as claimed in claim 1, characterised in that: Both of the clamping control assemblies (102) comprise a seat frame (1032) in a U shape, the outer side of the seat frame (1032) is assembledly connected with a hydraulic push rod (1021), and the side of the movable end of the hydraulic push rod (1021) is hinged with two push plates (1023) through the interior of the seat frame (1032); Both of the turnover roller conveyors (110) comprise two seat strips (1101), and a plurality of conveying rollers (1102) are arranged between the two seat strips (1101). Wherein, the side of the seat frame (1032) is assembled and fixed with the side plate (7), the two push plates (1023) are in a V shape, and one end of each of the two push plates (1023) is hingedly fixed with the seat strip (1101) on the turnover roller conveyor (110) through the interior of the movable window (6).

3. An engine roll-over device as claimed in claim 2, wherein: Both of the turnover roller conveyors (110) are provided with a guide assembly (109) between the four corners, the guide assembly (109) comprises a fixed seat (1092), and the top and the bottom of the fixed seat (1092) are integrally formed with a guide rod (1091). The fixed seat (1092) is assembled and fixed with the second disc (108) or the first disc (101) inside the conveying window (5).

4. An engine turning apparatus as claimed in claim 3 wherein: The outer part of one end of the two guide rods (1091) is sleeved and connected with a bushing (1093), the bushing (1093) is pinned to the inner part of one end of a seat strip (1101), and the seat strip (1101) is slidingly connected to the outer part of the guide rod (1091) through the bushing (1093).

5. An engine turning apparatus as claimed in claim 2 wherein: The inner side of the seat frame (1032) is movably connected with an auxiliary frame plate (1024), four limiting rods (1030) are weldedly connected to the side of the auxiliary frame plate (1024) facing the fixed end of the hydraulic push rod (1021), and the outer parts of the four limiting rods (1030) are sleeved with springs (1029). The four limiting rods (1030) are respectively located at the four corners of the auxiliary frame plate (1024) and are movably connected to the inner part of the seat frame (1032), and the springs (1029) are supported between the inner wall of the seat frame (1032) and the surface of the auxiliary frame plate (1024).

6. An engine turning apparatus as claimed in claim 5 wherein: The surface of the seat frame (1032) away from the two auxiliary frame plates (1024) is weldedly connected with four extension sleeves (1031), and the four extension sleeves (1031) are respectively slidingly connected to the inner parts of the four extension sleeves (1031).

7. An engine turning apparatus as claimed in claim 5 wherein: The surface of the auxiliary frame plate (1024) away from the seat frame (1032) is weldedly connected with a limiting block sleeve (1033) at the center, and the limiting block sleeve (1033) is supported between the movable end of the hydraulic push rod (1021) and the hinge joint of the two push plates (1023).

8. An engine turning apparatus as claimed in claim 5 wherein: The inner part of the side of the auxiliary frame plate (1024) away from the second disc (108) is assembledly connected with an infrared sensor (1025), one end of the infrared sensor (1025) faces between the two turnover roller conveyors (110), and the engine cylinder moving from the top of the ground roller conveyor (3) to between the two turnover roller conveyors (110) is monitored.

9. An engine turning apparatus as claimed in claim 5 wherein: The side surface of the auxiliary frame plate (1024) away from the seat frame (1032) is hingedly connected with a limiting arm (1027) at both ends, a strip-shaped groove (8) is formed in the inner part of the limiting arm (1027), and the surface of the side plate (7) is weldedly connected with two supports (1022) symmetrically arranged on both sides of the movable window (6), and the inner parts of the two supports (1022) are pin-connected with a supporting rod (1026). The supporting rod (1026) passes through the inner part of the strip-shaped groove (8), and the limiting arm (1027) is slidingly connected to the outer part of the supporting rod (1026) through the strip-shaped groove (8).

10. An engine turning apparatus as claimed in claim 9, wherein: The inner part of one end of the limiting arm (1027) away from the auxiliary frame plate (1024) is hingedly connected with a wheel (1028), and the wheel (1028) is composed of an outer rubber wheel and a central metal ring.

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