A cylinder head hoist tool and method

Abstract

The application discloses a hoisting tool and method for a cylinder cover, characterized in that the hoisting tool comprises a lifting assembly and a cylinder cover leaning tool, the lifting assembly comprises a fixed plate, a vertical plate and a lifting hole, the upper surface of the fixed plate is symmetrically provided with the vertical plate, the vertical plate is provided with the lifting hole matched with a lifting hook, the length of the fixed plate corresponds to the overall length of a group of cylinder covers, and the fixed plate is provided with a hole position used for being connected with the cylinder cover, the leaning tool comprises a leaning plate, a strip-shaped groove and a light hole, the strip-shaped groove is arranged along the length direction of the leaning plate, the light hole is arranged in the strip-shaped groove, and the number and position of the light hole correspond to the number of hole positions of the cylinder cover, the hoisting tool and method for the cylinder cover are simple in structure, convenient to use, firm in positioning and hoisting, can effectively reduce the working strength and time of workers, and greatly improve the installation efficiency of multiple cylinder covers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine component assembly, in particular to a hoisting tool and method for a cylinder head. BACKGROUND

[0002] The assembly of an engine cylinder head usually uses a lifting tool to hoist the cylinder head above the cylinder bore and fix it to the engine block by means of force bolts or studs. For a multi-cylinder engine with split cylinder heads, the following requirements must be met when hoisting the cylinder head: 1. The joint surfaces of the intake pipes or exhaust pipes of a group of cylinder heads should be kept in the same plane; 2. For cylinder heads positioned by force bolts, the lifting tool should not be loosened before the force bolts are tightened, so the lifting tool should meet the space requirements for tightening the force bolts; 3. After the cylinder head is lifted, the joint surface of the cylinder head and the engine block should be kept parallel.

[0003] For a multi-cylinder engine with a large power, the assembly components of a single cylinder head are heavy, and usually two workers are required to hoist the assembly components of a single cylinder head to the engine block, manually adjust the spatial angle of the cylinder head to keep it parallel to the joint surface of the cylinder head on the engine block, temporarily position the cylinder head without tightening the force bolts or studs, and then remove the lifting tool for the next assembly component of a single cylinder head. After all the cylinder heads are hoisted in place, the exhaust or intake surfaces of the cylinder heads are leveled using a leveling tool, and then the force bolts or studs are tightened in sequence. This method requires workers to repeatedly perform cylinder head hoisting operations, resulting in high labor intensity and low work efficiency. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the existing defects and provide a hoisting tool and method for a cylinder head, which is simple in structure, convenient to use, firmly positioned and hoisted, can effectively reduce the labor intensity and time of workers, greatly improves the installation efficiency, and effectively solves the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a hoisting tool for a cylinder head, characterized by comprising a lifting tool assembly and a cylinder head leveling tool, wherein the lifting tool assembly comprises a fixed plate, a vertical plate and a lifting hole, the upper surface of the fixed plate is symmetrically provided with a vertical plate, the vertical plate is provided with a lifting hole matched with a lifting hook, the length of the fixed plate corresponds to the overall length of a group of cylinder heads, and the fixed plate is provided with hole positions for connecting with the cylinder heads, and the leveling tool comprises a leveling plate, a strip-shaped groove and a light hole, the strip-shaped groove is arranged along the length direction of the leveling plate, and the light hole is arranged in the strip-shaped groove and the number and position of the light hole correspond to the number and position of the hole positions of the cylinder heads.

[0006] As a preferred technical solution of the present application, a rib plate is welded between the vertical plate and the fixed plate.

[0007] As a preferred technical scheme of the present application, the hole positions on the fixed plate include fixed plate positioning holes, push rod mounting holes and cylinder head fixing bolt mounting holes, the fixed plate positioning holes are used for threaded connection with the threaded holes of the cylinder head rocker arm seat through bolts, the push rod mounting holes are used for mounting of the push rod on the cylinder head, and the cylinder head fixing bolt mounting holes are used for passing of the fixing bolts on the cylinder head.

[0008] As a preferred technical scheme of the present application, the installation position of the vertical plate satisfies that the lifting point of the lifting hole and the gravity center of the cylinder head after lifting are on the same vertical plane.

[0009] As a preferred technical scheme of the present application, the flatness of the lower plane of the fixed plate is not less than that of the upper plane of the cylinder head, and the thickness of the fixed plate satisfies the strength requirement of not being bent and deformed.

[0010] As a preferred technical scheme of the present application, the flatness of the fixed plate is less than that of the cylinder head, and the thickness of the fixed plate satisfies the strength requirement of not being bent and deformed.

[0011] A lifting method of a cylinder head lifting tool, comprising the following steps:

[0012] Step one: place a plurality of cylinder heads on a material flat plate, and use a cylinder head leaning tool to lean the exhaust face or the intake face of each cylinder head;

[0013] Step two: align the light hole on the cylinder head leaning tool with the threaded hole on the exhaust face or the intake face of each cylinder head, and fix the cylinder head leaning tool to the cylinder head by using a bolt;

[0014] Step three: place the lifting assembly above the plurality of cylinder heads, correspond the fixed plate positioning hole with the cylinder head rocker arm seat fixing hole, and tighten the bolt at the fixed plate positioning hole;

[0015] Step four: pass the lifting hook on the lifting cable through the lifting hole on the lifting assembly, and start the overhead crane to lift the cylinder head to the engine body;

[0016] Step five: after the cylinder head fixing bolt is installed and tightened, remove the lifting assembly.

[0017] Compared with the prior art, the present application has the following advantages: (1) a set of combined lifting appliance is used to fix and constrain the position relationship of multiple cylinder covers, which can simultaneously complete the lifting and leaning of a group of cylinder covers against the exhaust surface; (2) the spatial correspondence between the lifting position and the overall center of gravity of the cylinder cover assembly is considered in the size design, thereby reducing the work of manually adjusting the installation angle of the cylinder cover; (3) the lifting appliance of the present application provides an operation space for fixing the cylinder cover and has the function of positioning multiple cylinder covers, thereby ensuring the position accuracy of the fixed cylinder cover; (4) the lifting appliance of the present application uses one lifting operation to complete the lifting, adjustment, leaning and positioning of multiple cylinder covers, thereby greatly saving manpower and material resources and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 Fig. 1 is a structural schematic view of the lifting appliance assembly of the present application;

[0019] Fig. 2 Fig. 2 is a structural schematic view of the cylinder cover leaning tool of the present application;

[0020] Fig. 3 Fig. 3 is a planar schematic view of the lifting position of the cylinder cover.

[0021] In the figure: 1 lifting appliance assembly, 11 fixed plate, 12 fixed plate positioning hole, 13 rib plate, 14 vertical plate, 15 lifting hole, 16 push rod mounting hole, 17 cylinder cover fixing bolt mounting hole, 2 cylinder cover leaning tool, 21 leaning plate, 22 strip-shaped groove, 23 light hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figs. 1-3The application provides a technical scheme: a hoisting tool for a cylinder cover, which comprises a lifting assembly 1 and a cylinder cover abutting tool 2. The lifting assembly 1 comprises a fixed plate 11, a vertical plate 14 and a lifting hole 15. The upper surface of the fixed plate 11 is symmetrically provided with the vertical plate 14. A rib plate 13 is welded between the vertical plate 14 and the fixed plate 11 to strengthen the connection strength between the vertical plate 14 and the fixed plate 11. The vertical plate 14 is provided with the lifting hole 15 matched with a lifting hook. The length of the fixed plate 11 corresponds to the overall length of a group of cylinder covers, and the fixed plate 11 is provided with hole positions for being connected with the cylinder covers. The abutting tool 2 comprises an abutting plate 21, a strip-shaped groove 22 and a light hole 23. The strip-shaped groove 22 is arranged along the length direction of the abutting plate 21. The light hole 23 is arranged in the strip-shaped groove 22, and the number and position of the light hole 23 correspond to the number and position of the hole positions of the cylinder cover. The hole positions on the fixed plate 11 comprise a fixed plate positioning hole 12, a push rod mounting hole 16 and a cylinder cover fixing bolt mounting hole 17. The fixed plate positioning hole 12 is used for being threadedly connected with a threaded hole of a rocker arm seat of the cylinder cover through a bolt. The push rod mounting hole 16 is used for mounting a push rod on the cylinder cover. The cylinder cover fixing bolt mounting hole 17 is used for the fixed bolt on the cylinder cover to pass through. The hoisting tool and method for the cylinder cover can effectively reduce the working strength and time of workers, ensure the position accuracy of the cylinder cover during fixing and greatly improve the installation efficiency.

[0024] In order to ensure the hoisting position accuracy and the abutting accuracy, the flatness of the lower plane of the fixed plate 11 is not less than the flatness of the upper plane of the cylinder cover. The thickness of the fixed plate 11 meets the strength requirement of not being bent and deformed. The cylinder cover abutting tool 2 can select the intake face or the exhaust face for abutting according to the process requirement. The flatness of the abutting plate 21 is less than the flatness of the abutting plane of the cylinder cover. The thickness of the abutting plate 21 meets the strength requirement of not being bent and deformed.

[0025] In order to reduce the workload of manually adjusting the installation angle of the cylinder cover, the welding position and the welding angle of the lifting hole 15 and the fixed plate 11 change due to the influence of the model parameters. The installation position of the vertical plate 14 meets the requirement that the lifting point of the lifting hole 15 and the gravity center of the cylinder cover after being lifted are on the same vertical plane. At this time, the inclination angle of the cylinder cover is consistent with the inclination angle of the combined surface of the cylinder cover on the engine body, which meets the requirement that the cylinder cover of the straight-line engine is horizontally placed and the cylinder cover of the V-type engine is placed at a certain angle, and facilitates the quick installation of the cylinder cover.

[0026] The hoisting method of the cylinder cover hoisting tool comprises the following steps:

[0027] Step one: place a plurality of cylinder covers on a material flat plate, and use the cylinder cover abutting tool 2 to abut the exhaust face or the intake face of each cylinder cover;

[0028] Step two: align the light hole 23 on the cylinder cover abutting tool 2 with the threaded hole of the exhaust face or the intake face of each cylinder cover, and fix the cylinder cover abutting tool 2 to the cylinder cover by using a bolt.

[0029] Step three: Place the lifting assembly 1 above the multiple cylinder heads, position the fixing plate positioning hole 12 with the cylinder head rocker arm seat fixing hole, tighten the bolt at the fixing plate positioning hole 12;

[0030] Step four: Pass the lifting hook on the lifting cable through the lifting hole 15 on the lifting assembly 1, start the overhead crane to lift the cylinder head to the engine body;

[0031] Step five: After installing and tightening the cylinder head fixing bolt, remove the lifting assembly 1.

[0032] Through the above lifting method, the lifting of multiple cylinder heads can be completed at one time and quickly, while the position fixing accuracy of the cylinder heads is ensured, the labor intensity of the workers is reduced, and the lifting efficiency is improved.

[0033] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A cylinder head hoisting tool characterized by: The cylinder head lifting tool comprises a lifting assembly and a cylinder head aligning tool, the lifting assembly comprises a fixed plate, a vertical plate and a lifting hole, the upper surface of the fixed plate is symmetrically provided with the vertical plate, the vertical plate is provided with the lifting hole matched with the hook, the length of the fixed plate corresponds to the overall length of a group of cylinder heads, and the fixed plate is provided with a hole position for connecting with the cylinder head, the aligning tool comprises an aligning plate, a strip-shaped groove and a light hole, the strip-shaped groove is arranged along the length direction of the aligning plate, and the light hole is arranged in the strip-shaped groove and corresponds to the number and position of the cylinder head. Step one: place a plurality of cylinder heads on a material flat plate, and use the cylinder head aligning tool to align the exhaust face or the intake face of each cylinder head; Step two: align the light hole on the cylinder head aligning tool with the exhaust face or the intake face threaded hole of each cylinder head, and fix the cylinder head aligning tool to the cylinder head by using a bolt; Step three: place the lifting assembly above the plurality of cylinder heads, position the fixed plate positioning hole to the threaded hole of the rocker arm seat of the cylinder head, and tighten the bolt at the fixed plate positioning hole; Step four: pass the hook on the sling through the lifting hole on the lifting assembly, and start the overhead crane to lift the cylinder head to the engine body; Step five: after installing and tightening the cylinder head fixing bolt, remove the lifting assembly.

2. A cylinder head lifting tool as claimed in claim 1, characterised in that: The vertical plate and the fixed plate are welded with a rib plate.

3. A cylinder head lifting tool as claimed in claim 1, wherein: The hole position on the fixed plate comprises a fixed plate positioning hole, a push rod mounting hole and a cylinder head fixing bolt mounting hole, the fixed plate positioning hole is used for threaded connection with the threaded hole of the rocker arm seat of the cylinder head by passing through a bolt, the push rod mounting hole is used for mounting the push rod on the cylinder head, and the cylinder head fixing bolt mounting hole is used for passing through the fixing bolt on the cylinder head.

4. A cylinder head lifting tool as claimed in claim 1, characterised in that: The installation position of the vertical plate satisfies that the lifting point of the lifting hole and the gravity center of the lifted cylinder head are on the same vertical plane.

5. A cylinder head lifting tool as claimed in claim 1, wherein: The flatness of the lower surface of the fixed plate is not less than that of the upper surface of the cylinder head, and the thickness of the fixed plate satisfies the strength requirement that no bending deformation occurs.

6. A cylinder head lifting tool as claimed in claim 1, characterised in that: The flatness of the aligning plate is less than that of the aligning surface of the cylinder head, and the thickness of the aligning plate satisfies the strength requirement that no bending deformation occurs.

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