A cylinder head hoisting device

Abstract

This application provides a cylinder head lifting device, relating to the field of engine assembly technology. It includes two X-shaped hinged booms, each boom having a connecting ring. At least two cylinders are horizontally arranged at the lower end of each boom, and all cylinders on each boom are interconnected. A ratchet mechanism is provided between the two booms. In this application, during lifting, the two X-shaped hinged booms clamp the cylinders at both ends against the sides of the cylinder head. Because the multiple cylinders at one end are interconnected, they can freely extend and retract to adapt to the surface contour of the cylinder head, increasing the contact area. The overall structure is simple, energy-independent, and low-cost.

Description

Technical Field

[0001] This invention relates to the field of engine assembly technology, and more specifically, to a cylinder head lifting device. Background Technology

[0002] The engine cylinder head is mainly used to seal the upper part of the cylinder. During assembly, the cylinder head needs to be hoisted onto the corresponding engine block and the threaded holes aligned.

[0003] In response, Chinese patent application number CN202322860174.2 discloses a cylinder head lifting device. The device mainly includes a floating handle, an operating part, and a clamping part. The cylinder head is clamped by controlling the clamping part to tighten or loosen the grip by holding the operating part.

[0004] However, in the process of implementing the technical solution of this utility model embodiment, the inventors of this invention discovered that the above-mentioned technology has at least the following technical problems:

[0005] 1. Both the operating part and the clamping part require external power, are heavy, and have high costs;

[0006] 2. The clamping plate contacts the cylinder head via a friction pad, but it cannot conform to the contour of the cylinder head, resulting in a small contact area and requiring a large clamping force, which further increases the cost. Summary of the Invention

[0007] To overcome the shortcomings of existing technologies, embodiments of the present invention provide a cylinder head lifting device that can solve the problems mentioned in the background art.

[0008] The technical solution adopted by the present invention to solve its technical problem is: a cylinder head lifting device, including two booms that are hinged together in an X shape, each boom having a connecting ring inserted therethrough, at least two cylinders being horizontally arranged at the lower end of each boom, all cylinders on each boom being interconnected, and a ratchet mechanism being arranged between the two booms.

[0009] In one specific implementation, the system further includes lifting rings, with both of the connecting rings connected to the lifting rings.

[0010] In one specific implementation, a rubber pad is fixedly connected to the telescopic end of the cylinder.

[0011] In one specific implementation, a crossbeam is fixedly connected to the lower end of the boom, the cylinder is horizontally arranged on the crossbeam, and connecting pipes are provided between the corresponding cylinders.

[0012] In one specific implementation, the ratchet mechanism includes a bracket, a ratchet, and a pawl. The bracket is fixedly connected to one of the booms, the ratchet is connected to the shaft of the other boom, the ratchet is rotatably connected to the bracket, the pawl is hinged to the bracket, and the pawl engages with the ratchet.

[0013] In one specific implementation, the ratchet mechanism further includes a spring, with both ends of the spring abutting against the bracket and the pawl, respectively.

[0014] In one specific implementation, a lever is fixedly connected to the pawl.

[0015] In one specific implementation, the ratchet mechanism further includes a large gear and a small gear, the large gear being fixedly connected to the corresponding boom, the small gear being fixedly connected to the ratchet, and the large gear meshing with the small gear.

[0016] The advantages of the embodiments of the present invention are:

[0017] During lifting, the two booms, which are hinged together in an X shape, form a clamping action, causing the cylinders at both ends to press against the sides of the cylinder head. Since the multiple cylinders at one end are interconnected, they can freely extend and retract to adapt to the surface contour of the cylinder head, increasing the contact area. The overall structure is simple, does not rely on energy, and is inexpensive. Attached Figure Description

[0018] Figure 1 A schematic diagram of the cylinder head hoisting device provided in an embodiment of the present invention;

[0019] Figure 2 A schematic diagram of the connection relationship between the large gear and the boom provided for an embodiment of the present invention;

[0020] Figure 3 Provided for the embodiments of the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0021] Figure 4 Provided for the embodiments of the present invention Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0022] In the diagram: 10-lifting boom; 20-linkage; 30-cylinder; 40-ratchet mechanism; 41-bracket; 42-ratchet; 43-pawl; 44-spring; 45-lever; 46-large gear; 47-small gear; 50-lifting ring; 60-rubber pad; 70-crossbar; 80-connecting pipe. Detailed Implementation

[0023] The technical solutions in these embodiments of the invention are intended to address the problems mentioned in the background section, and the overall approach is as follows:

[0024] Please see Figures 1-4 A cylinder head lifting device includes two X-shaped hinged booms 10, each boom 10 having a connecting ring 20 inserted therethrough. At least two cylinders 30 are horizontally arranged at the lower end of each boom 10, and all cylinders 30 on each boom 10 are interconnected. A ratchet mechanism 40 is provided between the two booms 10. During lifting, the two X-shaped hinged booms 10 clamp the cylinders 30 at both ends, pressing them against both sides of the cylinder head. Because the multiple cylinders 30 at one end are interconnected, they can freely extend and retract to adapt to the surface contour of the cylinder head, increasing the contact area. The overall structure is simple, energy-independent, and low-cost.

[0025] Please see Figures 1-4 It also includes a lifting ring 50, with two connecting rings 20 connected to the lifting ring 50. Here, an external lifting device hooks onto the lifting ring 50, which can simultaneously pull the two connecting rings 20.

[0026] Please see Figures 1-4 A rubber pad 60 is fixedly connected to the telescopic end of the cylinder 30. Here, the rubber pad 60 is used to increase friction.

[0027] Please see Figures 1-4 A horizontal frame 70 is fixedly connected to the lower end of the boom 10. Cylinders 30 are horizontally mounted on the horizontal frame 70, and connecting pipes 80 are provided between corresponding cylinders 30. Here, the horizontal frame 70 is used for mounting the cylinders 30, and the connecting pipes 80 are used to maintain the connection between multiple cylinders 30.

[0028] Please see Figures 1-4 The ratchet mechanism 40 includes a bracket 41, a ratchet 42, and a pawl 43. The bracket 41 is fixedly connected to one of the booms 10, the ratchet 42 is axially connected to the other boom 10, the ratchet 42 is rotatably connected to the bracket 41, and the pawl 43 is hinged to the bracket 41 and engages with the ratchet 42. Here, after lifting, the two booms 10 deflect, causing the ratchet 42 to rotate. The pawl 43 engages with the ratchet 42, achieving one-way locking of the ratchet 42 and preventing it from loosening due to hand gripping of the boom 10.

[0029] Please see Figures 1-4 The ratchet mechanism 40 also includes a spring 44, with both ends of the spring 44 abutting against the bracket 41 and the pawl 43, respectively. Here, the spring 44 keeps the pawl 43 pressed against the ratchet 42, enabling unidirectional rotation.

[0030] Please see Figures 1-4 A lever 45 is fixedly connected to the pawl 43. Here, the lever 45 is used to move the pawl 43, so that the two booms 10 can be opened.

[0031] Please see Figures 1-4The ratchet mechanism 40 also includes a large gear 46 and a small gear 47. The large gear 46 is fixedly connected to the corresponding boom 10, and the small gear 47 is fixedly connected to the ratchet 42. The large gear 46 and the small gear 47 mesh. Here, when the two booms 10 deflect, the meshing of the large gear 46 and the small gear 47 achieves an acceleration effect. When the clamping angle of the boom 10 changes, the ratchet 42 can rotate more angles. With the number of ratchet teeth of the ratchet 42 remaining constant, the precision of the self-locking of the boom 10 can be improved.

[0032] When using this invention: the cylinders 30 at both ends are placed against the two sides of the cylinder head. Since the two cylinders 30 at each end are interconnected, they can freely extend and retract and maintain contact with the surface of the cylinder head. The external lifting device hooks the lifting ring 50, which can simultaneously pull the two connecting rings 20, causing the two lifting arms 10 to deflect and clamp, so that the four cylinders 30 are tightly attached to the surface of the cylinder head. At the same time, the deflection of the lifting arms 10 drives the ratchet 42 to rotate more angles through the meshing of the large gear 46 and the small gear 47. The ratchet 42 is locked in one direction by the pawl 43, thereby preventing it from loosening.

[0033] In summary, during lifting, the two X-shaped hinged booms 10 form a clamping action, causing the cylinders 30 at both ends to press against both sides of the cylinder head. Since the multiple cylinders 30 at one end are interconnected, they can freely extend and retract to adapt to the surface contour of the cylinder head, increasing the contact area. The overall structure is simple, does not rely on energy, and is inexpensive.

[0034] 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. A cylinder head lifting device, characterized in that, The system includes two booms hinged together in an X-shape. Each boom has a connecting ring. At least two cylinders are horizontally mounted at the lower end of each boom, and all cylinders on each boom are interconnected. A ratchet mechanism is provided between the two booms. The ratchet mechanism includes a bracket, a ratchet, and a pawl. The bracket is fixedly connected to one of the booms, the ratchet is connected to the shaft of the other boom, the ratchet is rotatably connected to the bracket, the pawl is hinged to the bracket, and the pawl meshes with the ratchet. The ratchet mechanism also includes a large gear and a small gear. The large gear is fixedly connected to the corresponding boom, the small gear is fixedly connected to the ratchet, and the large gear meshes with the small gear.

2. The cylinder head lifting device as described in claim 1, characterized in that, It also includes lifting rings, and both of the connecting rings are connected to the lifting rings.

3. The cylinder head lifting device as described in claim 2, characterized in that, A rubber pad is fixedly connected to the telescopic end of the cylinder.

4. The cylinder head lifting device as described in claim 3, characterized in that, A crossbeam is fixedly connected to the lower end of the boom, and the cylinders are horizontally arranged on the crossbeams, with connecting pipes provided between the cylinders.

5. The cylinder head lifting device as described in claim 1, characterized in that, The ratchet mechanism also includes a spring, with both ends of the spring abutting against the bracket and the pawl, respectively.

6. The cylinder head lifting device as described in claim 5, characterized in that, A lever is fixedly connected to the pawl.

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