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Closed type hydraulic rock drilling machine

A rock drill and closed technology, applied in the field of hydraulic rock drills and closed hydraulic rock drills, can solve problems such as threatening the physical and mental health of miners, increasing mine production costs, large energy, etc., to protect physical and mental health, reduce vibration, and reduce energy consumption. Effect

Pending Publication Date: 2018-04-13
SHANDONG TIANRUI HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] On the one hand, the use of a large number of air-leg pneumatic rock drills consumes a lot of energy and increases the production cost of mines. On the other hand, the noise exceeds 125 dB(A), strong vibration and a large amount of oil pollution, causing a large number of employees to suffer from deafness, Occupational diseases such as hand disease seriously threaten the physical and mental health of miners

Method used

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  • Closed type hydraulic rock drilling machine
  • Closed type hydraulic rock drilling machine
  • Closed type hydraulic rock drilling machine

Examples

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Embodiment Construction

[0032] Examples such as Figure 1-Figure 3 As shown, a closed hydraulic rock drill includes an outer cover 2, and the outer cover 2 is provided with a shank 4 for fixing the tail end of the drill rod 38 and the piston 9, and the outer cover 2 is fixedly installed with a hydraulic motor 18, The hydraulic motor 18 drives the shank 4 to rotate through a three-stage transmission device. One end of the outer cover 2 is connected with an impact shell 21, and the impact shell 21 is provided with a buffer device to prevent the piston 9 from running dry.

[0033] The outer cover 2 is provided with a core body 5, and the shank 4 is installed in the core body 5. The front end of the core body 5 and the cover body of the outer cover 2 are sealed by a pressure plate 3, and the pressure plate 3 is set on the shank shank. 4 and is rotationally connected with the shank 4 through the first bearing 6 .

[0034] The rear end of the core body 5 is also rotationally connected to the shank 4 throu...

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Abstract

The invention discloses a closed type hydraulic rock drilling machine. The closed type hydraulic rock drilling machine comprises an outer cover. The outer cover is internally provided with a bit shanksleeve used for fixing and installing the tail end of a drill rod and a piston. The exterior of the outer cover is fixedly provided with a hydraulic motor. The hydraulic motor drives the bit shank sleeve to rotate through a three-level transmission device. One end of the outer cover is connected with an impact shell. The impact shell is internally provided with a buffer device for preventing empty drilling of the piston. The closed type hydraulic rock drilling machine can directly use tap water, closed cycle of high-pressure water and low pressure water is realized, energy is saved by 60% ormore compared with a pneumatic rock drilling machine system, noise is lower compared with the pneumatic rock drilling machine system, 20% or more of the noise can be reduced, and the closed type hydraulic rock drilling machine is stable and smooth in rotational speed and can buffer impact and vibration.

Description

technical field [0001] The invention relates to a hydraulic rock drill, in particular to a closed hydraulic rock drill used in mining, road, railway, water conservancy and tunnel construction projects, belonging to the field of engineering machinery. Background technique [0002] At present, in my country's mining, high-speed rail, subway tunnels, and water conservancy construction, air-leg pneumatic rock drills are widely used, with an annual demand of more than 100,000 units and more than 350,000 employees. Pneumatic rock drills have a history of more than 150 years of development and application. However, except for machine tool structure, material and other improvements, the energy utilization rate has not been substantially improved, and problems such as large vibration and high noise have not been solved. [0003] The hydraulic rock drills put into the market in the 1970s used medium and high-pressure hydraulic oil as the energy transmission medium. The equipment has h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B1/26E21B6/04
CPCE21B6/04E21B1/38
Inventor 李永胜王维林杨琦张凤琴王秋景
Owner SHANDONG TIANRUI HEAVY IND CO LTD
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