Disassembly and assembly device special for piston and connecting rod unit of automobile engine and using method

Abstract

The invention relates to a disassembly and assembly device special for a piston and connecting rod unit of an automobile engine and a using method. The device is formed by sequentially and fixedly connecting a pull ring, a screw rod, a fastening bolt, a retainer, left and right movable wedge blocks and a fastening wedge from top to bottom. According to the different structures of pistons and the different sizes of combustion chambers, the left and right movable wedge blocks with different diameters are selected to be placed in grooves in the tops of the pistons and fastened, and then the piston and connecting rod unit is pulled out or installed into the engine. The disassembly and assembly device is applicable to disassembling and assembling pistons and connecting rods of engines of different types of automobiles, and has the advantages of being safe, efficient, easy to operate, good in using effect and the like.

Description

technical field [0001] The invention belongs to the technical field of equipment maintenance, and relates to a special assembly and disassembly device for a piston connecting rod group of an automobile engine and a using method, and is especially suitable for the maintenance of crank connecting rod mechanisms of automobiles and crane engines. Background technique [0002] The piston and connecting rod group are the key components of the engine operation. Generally, multiple pistons and connecting rod assemblies are connected with the crank-and-rod mechanism in different engines. A single piston and connecting rod assembly weighs about 10-12 kg. It is very difficult to take out the connecting rod group and the connecting rod group from the combustion chamber space of the engine. Firstly, the upper cover of the engine cylinder and the oil pan must be opened completely, and after the connecting rod screw fixing the connecting rod cover and the connecting rod under the engine are...

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Problems solved by technology

[0002] The piston and connecting rod group are the key components of the engine operation. Generally, multiple pistons and connecting rod assemblies are connected with the crank-and-rod mechanism in different engines. A single piston and connecting rod assembly weighs about 10-12 kg. It is very difficult to take out the connecting rod group and the connecting rod group from the combustion chamber space of the engine. Firstly, the upper cover of the engine cylinder and the oil pan must be opened completely, and after the connecting rod screw fixing the connecting rod cover and the connecting rod under the engine are removed, use a wooden stick or a hand Go in and push up from the bottom of the car, and push the piston and connecting rod assembly upwards out of the combustion chamber. Inside the cylinder, there are parts such as the crankshaft. In the process of disassembly and installation, two people must coordinate their efforts, and the efficiency of disassembly and assembly is low

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