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Drill jumbo travelling emergency braking system and braking method thereof

A technology for emergency braking and rock drilling rigs, which is applied to braking actuators, drilling equipment and methods, and earthwork drilling and mining, and can solve problems such as reducing emergency braking effects and braking distances, and increasing accident risks. Achieve the effect of improving emergency braking effect, avoiding potential safety hazards, and avoiding additional wear and tear

Inactive Publication Date: 2020-08-28
江西鑫通机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wear of the parking brake pads will also reduce the effectiveness of emergency braking and increase the braking distance increasing the risk of accidents

Method used

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  • Drill jumbo travelling emergency braking system and braking method thereof
  • Drill jumbo travelling emergency braking system and braking method thereof

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Embodiment Construction

[0014] The invention will be further described below with reference to the accompanying drawings and in combination with specific embodiments, so that those skilled in the art can implement it by referring to the description, and the protection scope of the present invention is not limited to the specific embodiments.

[0015] After the bridge-driven rock drilling jumbo is used for a period of time, the filling speed of the filling valve 7 will decrease due to reasons such as the quality of the hydraulic oil or the wear of the filling valve 7 itself. The pressure switch in the braking system of the existing rock drilling jumbo with emergency braking function is a mechanical pressure switch, which does not have the switch point function. If the accumulator is insufficiently filled for some reason and the filling speed of the filling valve 7 is reduced, even if the system pressure of the brake system (that is, the accumulator filling pressure at this time) is higher than the sett...

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Abstract

The invention relates to a drill jumbo travelling emergency braking system and a braking method thereof. The braking system comprises a main pump, a prefill valve connected with the main pump, an energy storage unit connected with the prefill valve, a stopping / emergency braking valve connected with the prefill valve, and a lay-up brake connected with the stopping / emergency braking valve. The stopping / emergency braking valve comprises a magnetic valve and an electric pressure switch connected with the magnetic valve. The electric pressure switch defines a switching point pressure value and a switch restoring point pressure value. The electric pressure switch judges whether a braking system requires emergency braking by judging the magnitude of a system pressure value of the braking system.Via the pressure judgment, extra wear of the lay-up brake caused by the emergency braking system after long-time use of a drill jumbo can be effectively prevented, so the service life of the lay-up brake is improved and safety hazards are prevented.

Description

technical field [0001] The invention relates to the technical field of rock drilling equipment, in particular to a driving emergency braking system of a rock drilling jumbo and a braking method thereof. Background technique [0002] Rock drilling jumbo, also known as drilling jumbo, is a kind of rock drilling equipment used in tunnel and underground engineering construction by drilling and blasting method. It can move and support multiple rock drilling machines to carry out drilling operations at the same time. The working mechanism is mainly composed of thrusters, It is composed of drilling arm, rotary mechanism and translation mechanism. [0003] After the rock drilling rig with bridge drive is used for a period of time, the filling speed of the filling valve will decrease due to the quality of the hydraulic oil or the wear of the filling valve itself. In the prior art, the pressure switch in the braking system of the rock drilling rig with emergency braking function is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/02F15B13/02F15B1/02F16D65/14F16D121/02F16D127/02
CPCE21B7/02F15B1/02F15B13/02F16D65/14F16D2121/02F16D2127/02
Inventor 邹志远吴文涛王海刚
Owner 江西鑫通机械制造有限公司
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