An assembly and disassembly method and assembly and disassembly device for a connecting shaft between an excavator and an excavating tool

Abstract

The invention discloses a method and a device for assembling and disassembling a connecting shaft for an excavator and an excavating tool. A driving gear is mounted beside each shaft hole for mounting the connecting shaft of the excavating tool in advance, racks capable of being meshed with the driving gears are manufactured on the connecting shaft, so that the connecting shaft can be gradually inserted into shaft holes of the excavating tool and a small arm of the excavator by rotating the driving gears when the excavating tool is connected onto the small arm of the excavator through the connecting shaft, and the connecting shaft can be retreated from the shaft holes of the excavating tool and the small arm of the excavator only by rotating the driving gears in opposite directions when the connecting shaft needs to be disassembled from the excavating tool and the small arm of the excavator which are connected together. The method and the device have the advantages that the connecting shaft is conveniently, easily and rapidly assembled and disassembled, the structure is simple, operation is easily performed, manufacturing cost is low, the service life of whole excavating equipment can be effectively prolonged and the like.

Description

technical field [0001] The invention relates to an assembly and disassembly method and an assembly and disassembly device for a connecting shaft between an excavator and an excavating tool, and belongs to the technical field of excavator auxiliary tools. Background technique [0002] At present, in the prior art, when it is necessary to connect excavating tools such as buckets, breaking hammers, hydraulic shears or hydraulic pliers used on the excavator to the forearm of the excavator, it is generally used to manually insert the connecting shaft into the excavator. In the shaft hole on the tool and the small arm of the excavator, the excavating tool and the small arm of the excavator are connected together. This method of manually inserting the connecting shaft for connection not only has a large amount of labor for the workers, but also is very inconvenient for installation. , the problem of low work efficiency, but also the problem that it is difficult to replace the excav...

AI Technical Summary

Problems solved by technology

[0002] At present, in the prior art, when it is necessary to connect excavating tools such as buckets, breaking hammers, hydraulic shears or hydraulic pliers used on the excavator to the forearm of the excavator, it is generally used to manually insert the connecting shaft into the excavator. In the shaft hole on the tool and the small arm of the excavator, the excavating tool and the small arm of the excavator are connected together. This method of manually inserting the connecting shaft for connection not only has a large amount of labor for the workers, but also is very inconvenient for installation. , the problem of low work efficiency, and there is also the problem that it is difficult to replace the excavating tool, and it is easy to damage the machine when replacing the excavating tool

Especially after a kind of excavating tool has been used for a long time, when another excavating tool is to be replaced on the small arm of the excavator, due to being exposed to the sun and rain during long-term use, the nut on the connecting shaft will be damaged. A certain amount of rust is produced. At this time, when the digging tool on the small arm of the excavator is to be removed, the operator must use a knocking tool to loosen and remove the rusty nut on the connecting shaft, and then use the knocking tool to remove the rusty nut. After the connecting shaft knocks out the shaft seat hole on the digging tool and the shaft hole on the small arm of the excavator, the digging tool can be removed, and then another digging tool can be replaced, and the replacement must be done by knocking The connecting shaft can only be knocked into the shaft hole. This method of knocking installation or disassembly not only causes great damage to the machine, but also has a large amount of labor, time-consuming and laborious, low assembly and disassembly efficiency, and is likely to cause equipment life. problems such as shortening

Therefore, the connection mode of existing excavator and digging tool is very unsatisfactory

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