A cylinder head with a single oil cylinder that drives cylinder arm pins to expand and contract

Abstract

The invention relates to an arm pin flexible cylinder head of a single-oil cylinder driving cylinder. The cylinder head comprises a cylinder head body, a driving oil cylinder and a resetting device, wherein the cylinder head body comprises a cylinder pin, a dovetail groove, a cylinder pin bearing, a dovetail groove bearing, a cylinder pin driving sliding block and a dovetail groove driving sliding block; an oil cylinder piston rod of the driving oil cylinder is sleeved with the cylinder head body, an oil cylinder piston is connected with the cylinder pin driving sliding block and the dovetail groove driving sliding block, when the driving oil cylinder moves, the oil cylinder piston drives the cylinder pin driving sliding block and the dovetail groove driving sliding block to move; when the driving oil cylinder resets, the resetting device drives the cylinder pin driving sliding block and the dovetail groove driving sliding block to move. According to the arm pin flexible cylinder head of the single-oil cylinder driving cylinder, provided by the invention, an inclined reinforcement type working principle is adopted for driving a cylinder pin and a dovetail groove, the cylinder pin driving sliding block with an inclined groove drives the cylinder pin to move, the dovetail groove driving sliding block with an inclined groove drives the dovetail groove to move, and the inclined surfaces facilitates the increase of the drive force of a cylinder arm pin, and thus the size of the driving oil cylinder is reduced.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a cylinder head with a single oil cylinder that drives a cylinder arm pin to expand and contract. Background technique [0002] The single-cylinder bolt-type crane is a crane that realizes the telescopic function of the telescopic arm through the combined action of the telescopic oil cylinder, the arm pin, and the cylinder pin. The single-cylinder bolt system is a device built into the boom of the crane to assist the telescopic oil cylinder to realize the telescopic function of the boom of the crane, including cylinder pins, arm pins, dovetail grooves, detection switches and other auxiliary facilities. Telescoping main functional parts. The cylinder head is located at a certain position of the cylinder barrel or piston rod of the telescopic cylinder. It is used to control the fixing and separating device between the telescopic cylinder and the telescopic arm. It mainly inclu...

AI Technical Summary

Problems solved by technology

[0006] The existing cylinder head body has the following disadvantages: (1) High cost: Since the manufacture of the cylinder head body needs to be forged as a whole to form a blank, and then drilling, grinding, heat treatment and other processes are carried out on the forging, because multiple oil cylinders need to be installed, And the relative size requirements are relatively high, resulting in a substantial increase in processing costs; (2) Heavy weight: Since the cylinder head body is forged as a whole, and then drilled on the cylinder head body, there are more redundant metals on the cylinder head body, and the weight is also low. Larger; (3) The dovetail groove is easy to get stuck: because the two dovetail groove cylinders drive the dovetail groove at the same time, and the dovetail groove and the two dovetail groove cylinders need to be closely matched, when the dovetail groove cylinders are out of sync, it is easy to cause the dovetail The groove movement is stuck; (4) The spring design is limited: because the section of the cylinder head body perpendicular to the telescopic direction of the outrigger is limited by the last outrigger, the design of the dovetail groove spring and the cylinder pin spring is limited by space, making it difficult to Meet the corresponding force and life requirements; (5) The detection accuracy of the dovetail groove detection switch is low: the dovetail groove detection switch uses a proximity switch, and the proximity switch has a certain detection area. Only when the metal shift fork and the proximity switch have a certain overlap Only when the relevant objects can be detected, due to the limited installation space of the cylinder head body, the corresponding redundant design of the dovetail groove cannot be carried out, resulting in the limited detection accuracy of the dovetail groove detection switch

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