Cylinder cover hoisting device

Abstract

The invention provides a cylinder cover hoisting device, and relates to the technical field of engine assembly, the cylinder cover hoisting device comprises two hoisting arms which are hinged together in an X shape, each hoisting arm is provided with a connecting ring in a penetrating manner, the lower end of each hoisting arm is horizontally provided with at least two cylinders, all the cylinders on each hoisting arm are communicated with each other, and the connecting rings are arranged on the hoisting arms. And a ratchet mechanism is arranged between the two suspension arms. According to the lifting device, the two lifting arms hinged together in the X shape form a clamping action during lifting, the air cylinders at the two ends abut against the two sides of the air cylinder cover, the multiple air cylinders at one end communicate with one another, and therefore the lifting device can stretch out and draw back freely to be matched with the surface profile of the air cylinder cover, the contact surface is increased, the overall structure is simple, energy is not depended on, and cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of engine assembly, and in particular to a cylinder head hoisting device. Background Art

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

[0003] In this regard, Chinese patent application number CN202322860174.2 discloses a cylinder head lifting device, which mainly includes a floating handle, an operating part and a clamping part. The cylinder head is clamped by holding the operating part to control the clamping part to clamp or release.

[0004] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above technology has at least the following technical problems:

[0005] 1. Both the operating part and the clamping part require external energy, which is heavy and costly;

[0006] 2. The clamping plate contacts the cylinder head through the friction pad and cannot match the contour of the cylinder head, resulting in a small contact surface and a high clamping force requirement, further increasing the cost. Summary of the invention

[0007] In order to overcome the existing deficiencies, an embodiment of the present application provides a cylinder head lifting device, which can solve the problems mentioned in the above background technology.

[0008] The technical solution adopted by the embodiment of the present application to solve its technical problem is: a cylinder head lifting device, including two hanging arms hinged together in an X shape, each of the hanging arms is interspersed with a chain, at least two cylinders are horizontally arranged at the lower end of each of the hanging arms, all the cylinders on each of the hanging arms are interconnected, and a ratchet mechanism is arranged between the two hanging arms.

[0009] In a specific embodiment, a hanging ring is further included, and both of the two connecting rings are connected to the hanging ring.

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

[0011] In a specific implementation manner, a cross frame is fixedly connected to the lower end of the boom, the cylinders are transversely arranged on the cross frame, and connecting pipes are arranged between the corresponding cylinders.

[0012] In a specific embodiment, the ratchet mechanism includes a bracket, a ratchet and a pawl, the bracket is fixedly connected to one of the arms, the ratchet is connected to the shaft of the other arm, the ratchet is rotatably connected to the bracket, the pawl is hinged to the bracket, and the pawl engages with the ratchet.

[0013] In a specific embodiment, the ratchet mechanism further includes a spring, and two ends of the spring are respectively pressed against the bracket and the ratchet.

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

[0015] In a specific embodiment, the ratchet mechanism further includes a large gear and a small gear, the large gear is fixedly connected to the corresponding suspension arm, the small gear is fixedly connected to the ratchet, and the large gear is meshed with the small gear.

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

[0017] During lifting, two booms hinged together in an X shape form a clamping action, so that the cylinders at both ends are pressed against both sides of the cylinder head. Since the multiple cylinders at one end are interconnected, they can be freely extended and retracted to adapt to the surface contour of the cylinder head and increase the contact surface. The overall structure is simple, does not rely on energy, and is low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a cylinder head lifting device provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the structural connection between the large gear and the boom provided in the embodiment of the present application;

[0020] Figure 3 Provided for the implementation of this application Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0021] Figure 4 Provided for the implementation of this application Figure 1 Schematic diagram of the local enlarged structure at point B in the middle.

[0022] In the figure: 10-lifting arm; 20-link; 30-cylinder; 40-ratchet mechanism; 41-bracket; 42-ratchet; 43-pawl; 44-spring; 45-shift lever; 46-large gear; 47-small gear; 50-lifting ring; 60-rubber pad; 70-cross frame; 80-connecting pipe. DETAILED DESCRIPTION

[0023] The technical solution in the embodiment of the present application is to solve the problems mentioned in the above background technology, and the overall idea is as follows:

[0024] See also Figure 1-Figure 4 A cylinder head hoisting device includes two X-shaped hinged arms 10, each of which is interlaced with a link 20, at least two cylinders 30 are horizontally arranged at the lower end of each of the arms 10, all cylinders 30 on each of the arms 10 are interconnected, and a ratchet mechanism 40 is arranged between the two arms 10. During lifting, the two X-shaped hinged arms 10 form a clamping action, so that the cylinders 30 at both ends are pressed against both sides of the cylinder 30 head. Since the multiple cylinders 30 at one end are interconnected, they can be freely extended and retracted to adapt to the surface contour of the cylinder 30 head, thereby increasing the contact surface. The overall structure is simple, does not rely on energy, and is low in cost.

[0025] See also Figure 1-Figure 4 , also includes a lifting ring 50, and the two chain links 20 are all connected to the lifting ring 50. Here, the external lifting device hooks the lifting ring 50, and the two chain links 20 can be pulled simultaneously.

[0026] See also Figure 1-Figure 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] See also Figure 1-Figure 4 The lower end of the boom 10 is fixedly connected with a cross frame 70, and the cylinder 30 is transversely arranged on the cross frame 70, and a connecting pipe 80 is arranged between the corresponding cylinders 30. Here, the cross frame 70 is used for the installation of the cylinder 30, and the connecting pipe 80 is used to maintain the communication between the multiple cylinders 30.

[0028] See also Figure 1-Figure 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 suspension arms 10, the ratchet 42 is axially connected to the other suspension arm 10, the ratchet 42 is rotatably connected to the bracket 41, the pawl 43 is hinged to the bracket 41, and the pawl 43 is engaged with the ratchet 42. Here, after lifting, the two suspension arms 10 are deflected, so that the ratchet 42 rotates, and the ratchet 42 is locked in one direction by the engagement of the pawl 43 with the ratchet 42, so as to prevent the ratchet 42 from being loosened due to the hand grasping the suspension arm 10.

[0029] See also Figure 1-Figure 4 The ratchet mechanism 40 further includes a spring 44, and the two ends of the spring 44 are respectively pressed against the bracket 41 and the pawl 43. Here, the spring 44 keeps the pawl 43 pressed against the ratchet 42 to achieve one-way rotation.

[0030] See also Figure 1-Figure 4 , a lever 45 is fixedly connected to the pawl 43. Here, the pawl 43 is removed by the lever 45 so that the two suspension arms 10 can be opened.

[0031] See also Figure 1-Figure 4The ratchet mechanism 40 further 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 meshes with the small gear 47. Here, when the two booms 10 deflect, the meshing of the large gear 46 and the small gear 47 achieves the effect of speed increase. When the clamping angle of the boom 10 changes, the ratchet 42 can rotate more angles. When the number of ratchet teeth of the ratchet 42 remains unchanged, the precision of the self-locking of the boom 10 can be improved.

[0032] When the present application is used: the cylinders 30 at both ends are pressed against the two sides of the cylinder 30 cover. Since the two cylinders 30 at each end are interconnected, they can freely expand and contract and maintain contact with the surface of the cylinder 30 cover. The external lifting equipment hooks the lifting ring 50 to pull the two links 20 at the same time, 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 30 cover. At the same time, the deflection of the lifting arm 10 drives the ratchet 42 to rotate to a greater angle through the meshing of the large gear 46 and the small gear 47, and the ratchet 42 is locked in one direction by the pawl 43 to prevent it from loosening.

[0033] In summary, during lifting, the two booms 10 hinged together in an X shape form a clamping action, so that the cylinders 30 at both ends are pressed against the two sides of the cylinder 30 cover. Since the multiple cylinders 30 at one end are interconnected, they can be freely extended and retracted to adapt to the surface contour of the cylinder 30 cover, thereby increasing the contact surface. The overall structure is simple, does not rely on energy, and is low in cost.

[0034] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A cylinder head lifting device, characterized in that: It comprises two booms hinged together in an X shape, each boom is interspersed with a chain, at least two cylinders are horizontally arranged at the lower end of each boom, all the cylinders on each boom are interconnected, and a ratchet mechanism is arranged between the two booms.

2. The cylinder head lifting device according to claim 1, characterized in that: It also includes a lifting ring, and the two connecting rings are both connected to the lifting ring.

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

4. The cylinder head lifting device according to claim 3, characterized in that: The lower end of the boom is fixedly connected with a cross frame, and the cylinders are transversely arranged on the cross frame, and connecting pipes are arranged between the corresponding cylinders.

5. The cylinder head lifting device according to claim 4, characterized in that: The ratchet mechanism includes a bracket, a ratchet and a pawl, wherein the bracket is fixedly connected to one of the suspension arms, the ratchet is connected to the shaft of the other suspension arm, the ratchet is rotatably connected to the bracket, the pawl is hinged to the bracket, and the pawl is engaged with the ratchet.

6. The cylinder head lifting device according to claim 5, characterized in that: The ratchet mechanism also includes a spring, and two ends of the spring are respectively pressed against the bracket and the ratchet pawl.

7. The cylinder head lifting device according to claim 6, characterized in that: The pawl is fixedly connected with a shift rod.

8. The cylinder head lifting device according to claim 7, characterized in that: The ratchet mechanism also includes a large gear and a small gear, the large gear is fixedly connected to the corresponding suspension arm, the small gear is fixedly connected to the ratchet, and the large gear is meshed with the small gear.

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