A large-bore diesel engine cylinder cover turnover lifting device

Abstract

This utility model discloses a cylinder head flipping and lifting tool for large-diameter diesel engines, belonging to the field of engine technology. It solves the problems of difficulty in balancing and flipping cylinder heads when using lifting chains, resulting in low efficiency. The tool includes a lifting body comprising a lifting rod and two booms. The booms are respectively mounted at both ends of the lifting rod. A balance block is slidably fitted onto the lifting rod, and a lifting ring is provided at the top of each balance block. Each boom has a mounting block on its lower inner side, with a mounting groove containing a sleeve. The sleeve has a connecting device for connecting to the cylinder head, comprising a rotating rod and a connecting plate. The connecting plate has mounting holes containing fastening bolts. This utility model's cylinder head flipping and lifting tool for large-diameter diesel engines effectively improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and more specifically, to a cylinder head tilting and lifting device for a large-bore diesel engine. Background Technology

[0002] When installing an engine cylinder head, it is necessary to lift the cylinder head to facilitate its installation.

[0003] Currently, the common method for lifting cylinder heads is to use a simple lifting chain to suspend the cylinder head directly via chain or rope. While this method can accommodate cylinder heads of different sizes, the cylinder head is prone to swaying and rotating during lifting, making it difficult to adjust the center of gravity and align with the cylinder bore, thus making cylinder head installation difficult. Furthermore, when installing valves, the cylinder head needs to be flipped so that its bottom surface faces upwards, which is also cumbersome, poses significant safety hazards, and is inefficient. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cylinder head flipping and lifting tool for large-diameter diesel engines, which effectively improves work efficiency and safety during operation, in order to address the above-mentioned shortcomings of the prior art.

[0005] The technical solution of this utility model is as follows: A cylinder head flipping and lifting device for a large-diameter diesel engine includes a lifting device body, which includes a lifting rod and two lifting arms. The two lifting arms are respectively installed at both ends of the lifting rod. A balance block is slidably sleeved on the lifting rod. A lifting ring is provided on the top of the balance block. An installation block is provided on the lower inner side of each lifting arm. An installation groove is provided on the installation block. A sleeve is provided in the installation groove. A connecting device for connecting to the cylinder head is provided on the sleeve. The connecting device includes a rotating rod and a connecting plate. An installation hole is provided on the connecting plate. A fastening bolt is provided in the installation hole. The fastening bolt passes through the installation hole and is threaded into a threaded hole corresponding to the cylinder head. The rotating rod is movably installed in the sleeve, and one end of the rotating rod is fixedly connected to the connecting plate. An annular protrusion is provided on the rotating rod. The diameter of the annular protrusion is adapted to the inner diameter of the sleeve, and the annular protrusion is movably installed in the sleeve.

[0006] As a further improvement, the lower outer side of the boom is threaded with an adjusting bolt, one end of which is rotatably connected to the rotating rod via a bearing.

[0007] Furthermore, the sleeve is provided with a threaded hole, and a first locking bolt is threaded into the threaded hole. One end of the first locking bolt is provided with an arc-shaped plate that is adapted to the circumferential surface of the rotating rod, and the lower end surface of the arc-shaped plate is in contact with the circumferential surface of the rotating rod.

[0008] Furthermore, the arc-shaped plate is located between the annular protrusion and the connecting plate.

[0009] Furthermore, the counterweight has a G-shaped cross-section and a groove inside. The boom is slidably inserted into the groove. A second locking bolt is threaded onto the side wall of the counterweight, and the end face of one end of the second locking bolt is pressed against the side wall of the boom.

[0010] Furthermore, the mounting hole is an oblong hole.

[0011] Furthermore, a reinforcing block is provided between the boom and the jib.

[0012] Beneficial effects

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] 1. This utility model relates to a cylinder head flipping and lifting device for large-diameter diesel engines. By connecting the cylinder head with a connecting plate and rotating the connecting plate onto a sleeve, the cylinder head can be smoothly flipped after being lifted, effectively improving work efficiency.

[0015] 2. The present invention relates to a cylinder head tilting and lifting device for a large-diameter diesel engine. The balance block can slide left and right along the lifting rod. By adjusting the position of the balance block on the lifting rod, the center of gravity of the lifting device body and the cylinder head as a whole can be kept on the central axis of the lifting rod when the cylinder head is lifted, thereby ensuring the balance of the lifting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention in use;

[0017] Figure 2 This is a three-dimensional structural diagram of the lifting device body in this utility model;

[0018] Figure 3 This is a schematic diagram of the front cross-sectional structure of the rotating rod of this utility model;

[0019] Figure 4 This is a side view sectional structural diagram of the transfer rod of this utility model;

[0020] Figure 5 This is a side view cross-sectional structural diagram of the balance block in this utility model;

[0021] Figure 6 This is a side view of the connecting plate in this utility model.

[0022] The components are: 1-lifting device body, 2-mounting block, 3-sleeve, 4-mounting groove, 5-balance block, 6-lifting ring, 7-rotating rod, 8-connecting plate, 9-annular protrusion, 10-adjusting bolt, 11-lifting rod, 12-lifting arm, 13-mounting hole, 14-threaded hole, 15-first locking bolt, 16-arc plate, 18-second locking bolt, 19-groove, 20-reinforcing plate, 21-cylinder head. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0024] See Figure 1-6 A cylinder head lifting device for large-bore diesel engines includes a lifting device body 1. The lifting device body 1 includes a lifting rod 11 and two lifting arms 12. The two lifting arms 12 are respectively installed at both ends of the lifting rod 11. A counterweight 5 is slidably sleeved on the lifting rod 11. A lifting ring 6 is provided on the top of the counterweight 5. The lifting device body 1 is connected to a crane or other lifting device through the lifting ring 6, thereby lifting the cylinder head 21. Each lifting arm 12 has a mounting block 2 on its lower inner side. The mounting block 2 has a mounting groove 4. A sleeve 3 is installed in the mounting groove 4. The sleeve 3 is provided with a connecting device for connecting to the cylinder head. The connecting device includes a rotating rod 7 and a connecting plate 8. The connecting plate 8 is provided with a mounting hole 13. A fastening bolt is provided in the mounting hole 13. The fastening bolt passes through the mounting hole 13 and is threadedly connected to the threaded hole corresponding to the cylinder head 21. The rotating rod 7 is movably installed in the sleeve 3, and one end of the rotating rod 7 is fixedly connected to the connecting plate 8. The rotating rod 7 is provided with an annular protrusion 9. The diameter of the annular protrusion 9 is adapted to the inner diameter of the sleeve 3, and the annular protrusion 9 is movably installed in the sleeve 3.

[0025] In use, first place the booms 12 on both sides of the lifting device body 1 on both sides of the cylinder head 21, tighten the adjusting bolts 10 to make the connecting plate 8 fit against the side wall of the cylinder head 21, and then fix the connecting plate 8 to the cylinder head 21 with the fastening bolts. Then connect it to a crane or other lifting device through the lifting ring 6, and lift the lifting device body 1 with the crane to lift the cylinder head 21. During the lifting process, adjust the overall center of gravity of the lifting device body 1 by sliding the left and right balance blocks 5 to maintain balance. The lifting device connects to the cylinder head 21 through the connecting plate 8, and by rotating the connecting plate 8 onto the sleeve 3, the cylinder head 21 can be smoothly rotated, effectively improving work efficiency.

[0026] In this embodiment, an adjusting bolt 10 is threadedly connected to the lower outer side of the boom 12. One end of the adjusting bolt 10 is rotatably connected to the rotating rod 7 through a bearing. When the position of the connecting plate 8 is adjusted by rotating the adjusting bolt 10, the distance between the two connecting plates 8 is adjusted. This can be applied to cylinder heads of different sizes and specifications, thus expanding its application range.

[0027] In this embodiment, the sleeve 3 is provided with a threaded hole 14, and a first locking bolt 15 is threadedly connected to the threaded hole 14. One end of the first locking bolt 15 is provided with an arc-shaped plate 16 that is adapted to the circumferential surface of the rotating rod 7, and the lower end surface of the arc-shaped plate 16 is in contact with the circumferential surface of the rotating rod 7. When the operator rotates the cylinder head to the required position, the first locking bolt 15 is tightened, so that the lower end surface of the arc-shaped plate 16 is in contact with and squeezed with the circumferential surface of the rotating rod 7, thereby limiting the circumferential rotation of the rotating rod 7 and preventing the cylinder head 21 from suddenly rotating during operation when it is lifted.

[0028] The lower end face of the arc plate 16 can be provided with anti-slip texture to increase the roughness of the lower end face of the arc plate 16 and further enhance the friction between the arc plate 16 and the rotating rod 7.

[0029] In this embodiment, the arc plate 16 is located between the annular protrusion 9 and the connecting plate 8. When it is necessary to adjust the position of the connecting plate 8 by rotating the adjusting bolt 10, the operator needs to turn the first locking bolt 15 to make the arc plate 16 leave the circumferential surface of the rotating rod 7. At this time, the position of the connecting plate 8 can be moved by rotating the adjusting bolt 10. At the same time, the movement of the connecting plate 8 can be limited by the cooperation between the arc plate 16 and the annular protrusion 9.

[0030] In this embodiment, the counterweight 5 has a G-shaped cross-section and a groove 19 inside. The lifting rod 11 is slidably inserted into the groove 19. A second locking bolt 18 is threaded onto the side wall of the counterweight 5. The end face of one end of the second locking bolt 18 is pressed against the side wall of the lifting rod 11. The width and depth of the groove 19 are adapted to the width and height of the lifting rod 11. The counterweight 5 can slide left and right along the lifting rod 11. By adjusting the position of the counterweight 5 on the lifting rod 11, the center of gravity of the lifting body 1 and the cylinder head 21 as a whole can be kept on the central axis of the lifting rod 11 when the lifting body 1 lifts the cylinder head 21, thereby ensuring the balance of the lifting. After the counterweight 5 is adjusted to the appropriate position, the second locking bolt 18 is tightened so that the end face of one end of the second locking bolt 18 is pressed against the side wall of the lifting rod 11, thereby fixing the counterweight 5 on the lifting rod 11 and preventing the counterweight 5 from sliding relative to the lifting rod 11 due to external forces during the lifting process.

[0031] In this embodiment, the mounting hole 13 is an elongated hole. The elongated hole has more adjustment space, which can reduce the precision requirements of the mounting hole 13 on the connecting plate 8 and make it easier for the connecting plate 8 to be connected to the cylinder head 21 by fastening bolts.

[0032] In this embodiment, a reinforcing block 20 is provided between the boom 11 and the arm 12. The cross-section of the reinforcing block 20 is an isosceles right triangle. The two right-angled sides of the reinforcing block 20 are connected to the bottom of the boom 11 and the side wall of the arm 12, respectively. The triangle has high stability. By installing the reinforcing block 20 with an isosceles right triangle structure at the included angle between the boom 11 and the arm 12, the overall structural strength of the lifting device body 1 can be improved, and the perpendicularity between the boom 11 and the arm 12 can be further guaranteed.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present utility model. These modifications and improvements will not affect the effectiveness of the present utility model or the practicality of the patent.

Claims

1. A large bore diesel engine cylinder head flip hanger, characterized by, The device includes a lifting body (1), which includes a lifting rod (11) and two booms (12). The two booms (12) are respectively installed at both ends of the lifting rod (11). A balance block (5) is slidably sleeved on the lifting rod (11). A lifting ring (6) is provided on the top of the balance block (5). A mounting block (2) is provided on the lower inner side of each boom (12). A mounting groove (4) is provided on the mounting block (2). A sleeve (3) is provided in the mounting groove (4). A connecting device for connecting to the cylinder head is provided on the sleeve (3). The connecting device includes... Includes a rotating rod (7) and a connecting plate (8). The connecting plate (8) is provided with a mounting hole (13). A fastening bolt is provided in the mounting hole (13). The fastening bolt passes through the mounting hole (13) and is threadedly connected to the threaded hole corresponding to the cylinder head (21). The rotating rod (7) is movably installed in the sleeve (3), and one end of the rotating rod (7) is fixedly connected to the connecting plate (8). The rotating rod (7) is provided with an annular protrusion (9). The diameter of the annular protrusion (9) is adapted to the inner diameter of the sleeve (3), and the annular protrusion (9) is movably installed in the sleeve (3).

2. A large bore diesel engine cylinder head roll over spreader according to claim 1, wherein, The lower outer side of the boom (12) is threaded with an adjusting bolt (10), and one end of the adjusting bolt (10) is rotatably connected to the rotating rod (7) through a bearing.

3. A large bore diesel engine cylinder head roll over spreader according to claim 1 wherein, The sleeve (3) is provided with a threaded hole (14), and a first locking bolt (15) is threadedly connected to the threaded hole (14). One end of the first locking bolt (15) is rotatably provided with an arc plate (16) that is adapted to the circumferential surface of the rotating rod (7), and the lower end surface of the arc plate (16) is in contact with the circumferential surface of the rotating rod (7).

4. A large bore diesel engine cylinder head roll over spreader according to claim 3, wherein, The arc-shaped plate (16) is located between the annular protrusion (9) and the connecting plate (8).

5. A large bore diesel engine cylinder head roll over spreader according to claim 1 wherein, The counterweight (5) has a G-shaped cross section and a groove (19) inside. The rod (11) is slidably inserted into the groove (19). A second locking bolt (18) is threaded onto the side wall of the counterweight (5). The end face of one end of the second locking bolt (18) is pressed against the side wall of the rod (11).

6. A large bore diesel engine cylinder head roll over spreader according to claim 1 wherein, The mounting hole (13) is an elongated hole.

7. A large bore diesel engine cylinder head roll over spreader according to claim 1 wherein, A reinforcing block (20) is provided between the boom (11) and the arm (12).

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