Crosshead pin lifting device

Abstract

The invention relates to a lifting device, in particular to a cross head pin lifting device applied to a reciprocating compressor. A lifting device body of the lifting device is of a concave shape. A lifting rope of lifting equipment is connected with the end of a first side rod of the lifting device body, and the end of a second side rod of the lifting device body is connected with a cross head pin. The second side rod is sleeved with a movable collision block. A first stopping ring and a second stopping ring are fixedly arranged on the second side rod and located at the front side and the rear side of the collision block separately. The cross head pin can collide with any stopping ring to move through the collision block. By the adoption of the cross head pin lifting device, the labor intensity of workers is relieved, safety is improved, and meanwhile quality accidents caused by human factors are reduced.

Description

technical field [0001] The invention relates to a hoisting device, in particular to a crosshead pin hoisting device applied to a reciprocating compressor. Background technique [0002] As the reciprocating compressor becomes larger and larger, the various parts of the reciprocating compressor are also developing in the direction of larger size, which also changes the installation structure of each part, such as image 3 As shown, taking the installation of the crosshead pin as an example, the crosshead pin needs to pass through the installation hole of the fuselage and the copper sleeve at the end of the connecting rod at the same time. With the trend of large-scale development of equipment, the weight of the crosshead pin is also increasing. The heavier it is, it will be difficult to install according to the hoisting method of the prior art. [0003] During the installation process of the crosshead pin in the prior art, it is necessary to adjust the level of the crosshead p...

AI Technical Summary

Problems solved by technology

[0002] As the reciprocating compressor becomes larger and larger, the various parts of the reciprocating compressor are also developing in the direction of larger size, which also changes the installation structure of each part, such as image 3 As shown, taking the installation of the crosshead pin as an example, the crosshead pin needs to pass through the installation hole of the fuselage and the copper sleeve at the end of the connecting rod at the same time. With the trend of large-scale development of equipment, the weight of the crosshead pin is also increasing. The heavier it is, it will be difficult to install according to the hoisting method of the prior art

[0003] During the installation process of the crosshead pin in the prior art, it is necessary to adjust the level of the crosshead pin by manually applying force to one end of the hoisting pole, and the person has to move with the crane, such as Figure 5 shown, where F 1 is the force applied by the sling to the sling, F 2 is the force manually applied to the lifting pole, and G is the gravity of the crosshead pin itself. Take the crosshead pin of the 150 series as an example, the gravity of the crosshead pin of this series is G = 236KG, and the installation distance L is less than 570mm, so it is necessary to manually The balance force is relatively large, coupled with the narrow installation space and the clearance fit between the crosshead pin and the mounting hole, the installation is very unstable, which increases the difficulty of installing the crosshead pin, and it is also easy to make the crosshead pin in the installation process. Collision with other parts, due to the high surface roughness requirements of the crosshead pin (usually Ra0.2), it is easy to cause the crosshead pin to be repaired or even scrapped, affecting the construction period

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