Shock-absorbing pin roll component

Abstract

A damping pin shaft component comprises a pin shaft (5), the middle part of the pin shaft (5) is sleeved with at least a ring rubber sleeve (3), the outer ring of the ring rubber sleeve (3) is sleeved with a shaft sleeve (4) which is in interference-fit with the ring rubber sleeve (3), one end of the pin shaft (5) is sleeved with a positioning sleeve (1) which is fixed by using an elastic cylindrical pin (2) radially passing through the pin shaft (5). The damping pin shaft component has at least a ring rubber sleeve sleeved at the middle part of the pin shaft, a shaft sleeve sleeved on the outer ring of the ring rubber sleeve, because that the ring rubber sleeve can effectively absorb impact and vibration passing to the pin shaft, simultaneously the elastic cylindrical pin can relieve and lighten vibration caused by hard contact between the pin shaft and the other components, and the damping pin shaft component has transverse connection positioning function. Therefore the damping pin shaft component can reduce vibration and noise, improve operation stability of equipment, such as a drill, and can improve service life of related components.

Description

technical field [0001] The invention relates to a pin shaft assembly with shock absorbing function. Background technique [0002] When the pin shaft is used to connect the drive rod and the driven part for reciprocating motion, it will be subjected to strong alternating impact loads. For example, the pin shaft of the power head device part of the existing drilling rig will be subject to very strong alternating impact loads during work. The structure of the pin shaft part of the power head device of existing drilling rig is as attached image 3 As shown, the two ends of the pin shaft 9 are respectively inserted on the left and right connecting ears 10, 11 of the power head carriage, and the middle part of the pin shaft 9 is fitted with the connecting plate 12 of the power head box body. Since the pin shaft 9 The two ends and the middle part of the rig are in direct contact with the components. During the construction of the drilling rig, the power head will be subject to var...

AI Technical Summary

Problems solved by technology

The structure of the pin shaft part of the power head device of existing drilling rig is as attached image 3 As shown, the two ends of the pin shaft 9 are respectively inserted on the left and right connecting ears 10, 11 of the power head carriage, and the middle part of the pin shaft 9 is fitted with the connecting plate 12 of the power head box body. Since the pin shaft 9 The two ends and the middle part of the rig are in direct contact with the components. During the construction of the drilling rig, the power head will be subject to various constant shocks and vibrations. Since the pin shaft 9 does not have a shock-absorbing effect, the related components are often damaged, seriously Affect the stability of drilling rig operation

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