Double-piston-rod hydraulic oil cylinder

A hydraulic cylinder and double piston rod technology, applied in the field of hydraulic cylinders, can solve problems such as inconvenient installation, gear vibration, loud noise, etc.

Pending Publication Date: 2021-05-18
ATLAS COPCO NANJING CONSTR & MINING EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gear meshing process is noisy, prone to gear vibration, and the system stability is not good. Moreover, the combination of the hydraulic motor and the reducer has a large lateral dimension, inconvenient installation, and limited feed power.
[0005] In summary, how to overcome the inconvenience caused by the lack of stability of the hydraulic cylinder in the existing blasthole drilling rig is a technical problem that needs to be solved urgently in the prior art

Method used

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Embodiment Construction

[0041] In order to further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings and embodiments.

[0042] In the prior art, hydraulic motors and reduction boxes are usually used to generate adjustable torque, and the torque is converted into propulsion by sprockets and chains to solve the problem of the stability of the pressure bar under the action of its own propulsion in the single cylinder feed system. . However, the gear meshing process is noisy and prone to gear vibration, resulting in the stability of the pressure bar still exists.

[0043] combine figure 1 with image 3 , the present invention provides a kind of double-piston rod hydraulic oil cylinder in order to solve the above-mentioned problem, and this hydraulic oil cylinder is used for driving movable pulley block 500 to pull power head 400 to move up and down, and drilling device is installed on power head 400; Specific...

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Abstract

The invention discloses a double-piston-rod hydraulic oil cylinder, and belongs to the technical field of hydraulic oil cylinders. The double-piston-rod hydraulic oil cylinder comprises a cylinder barrel, an upper piston rod and a lower piston rod which are independently arranged in the cylinder barrel, an upper rod cavity and a lower rod cavity which communicate with each other are formed between the upper piston rod and the cylinder barrel and between the lower piston rod and the cylinder barrel respectively, a rodless cavity is formed between the upper piston rod and the lower piston rod, a first channel and a second channel which are used for providing hydraulic oil are formed in the middle of the lower piston rod, the first channel communicates with the rodless cavity, and the second channel communicates with the lower rod cavity. According to the double-piston-rod hydraulic oil cylinder, a long and thin single piston rod can be changed into the two short piston rods, a power head is stably controlled to be lifted up and pressed down, deep holes are drilled, a large-stroke oil cylinder does not need to be manufactured and machined, the same effect can be achieved only by carrying out related improvement on the structures and oil ways of the piston rods, ad therefore the production cost is greatly saved, potential safety hazards are avoided, and better pressing rod stability is achieved through the shorter piston rods.

Description

technical field [0001] The invention belongs to the technical field of hydraulic oil cylinders, and more specifically relates to a double-piston rod hydraulic oil cylinder. Background technique [0002] Roller cone drilling rigs are generally used in blast hole drilling operations in large open pit mines. For large-scale open-pit mines, especially open-pit metal mines, there are higher requirements for drilling diameter, drilling depth and drilling pressure. Existing roller cone drilling rigs use a single feed cylinder, which cannot meet the requirements of some mining sites in terms of drilling diameter, drilling depth, and drilling pressure. [0003] In view of the poor drilling ability of existing blasthole drilling rigs, which cannot meet the working requirements of special mining areas, relevant technical solutions have been disclosed in the prior art, such as patent application number: 2017105404630, application date: July 5, 2017, The name of the invention is: a fee...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/20F15B15/22F15B15/24
CPCF15B15/1409F15B15/1457F15B15/149F15B15/226F15B15/22F15B15/24
Inventor 韩家威杨敏
Owner ATLAS COPCO NANJING CONSTR & MINING EQUIP
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