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Electro-hydraulic control system and crawler-type mining trolley

A technology of electro-hydraulic control system and proportional control valve, which is applied in fluid pressure actuating system components, earthwork drilling, fluid pressure actuating device, etc. Drilling, personnel tipping and other problems, to avoid the sticking of drill rods, reduce the labor intensity of walking, and ensure the safety of construction

Active Publication Date: 2022-04-12
XUZHOU XUGONG FOUND CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the control system of mining trolleys mostly adopts full hydraulic control, which cannot achieve precise control of impact, rotation, propulsion speed and pressure, such as high-speed retraction of the impactor, low-speed opening, medium-speed drilling, and slow-speed upper rod, etc., which cannot be done. To stepless anti-jamming, it is impossible to protect the impactor and drilling tools well, and it is also unable to meet the needs of different working conditions for the rotation speed. For example, for small-sized drill bits, fast rotation speed should be required.
At the same time, the drilling is operated by hydraulic control, and the operating position is relatively fixed, so there is a risk of construction under dangerous working conditions.
For the walking operation, the drill truck is moved manually by operating the hydraulic control handle in the cab, which may easily cause the danger of personnel tipping over when transporting the upper and lower pallet trucks or turning with limited vision

Method used

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  • Electro-hydraulic control system and crawler-type mining trolley
  • Electro-hydraulic control system and crawler-type mining trolley
  • Electro-hydraulic control system and crawler-type mining trolley

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Such as figure 1 and figure 2 As shown, this embodiment provides an electro-hydraulic control system, including rock drilling electric proportional control valve 2, propulsion electric proportional multi-way valve 7, rotary electric proportional multi-way valve 8, travel multi-way valve 9, plunger pump and gears The pump and the plunger pump are connected to the rock drilling electric proportional control valve 2, the propulsion electric proportional multi-way valve 7 and the travel multi-way valve 9, and the gear pump is connected to the rotary electric proportional multi-way valve 8. The electric proportional control valve 2 for rock drilling is connected to the impactor 3 and the shuttle valve group for electric proportional adjustment of the impact pressure, wherein the shuttle valve group includes the seventh shuttle valve and the eighth shuttle valve; the propulsion electric proportional multi-way valve 7 is connected to the propulsion cylinder 4 And shuttle val...

Embodiment 2

[0072] This embodiment provides an electro-hydraulic control system, including the system structure in Embodiment 1.

[0073] Such as Figure 6 As shown, the travel speed reducer includes a right travel speed reducer 10 and a left travel speed reducer 11 . The travel multi-way valve 9 includes the fifth pilot relief valve 9.1, the sixth pilot relief valve 9.2, the third relief valve 9.3, the fourth pressure reducing valve 9.4, the third one-way valve 9.5, and the third proportional reversing valve. Valve 9.6, fourth proportional directional valve 9.9, second pressure compensator 9.7, third pressure compensator 9.11, third load feedback shuttle valve 9.8 and fourth load feedback shuttle valve 9.10. The fifth pilot-operated overflow valve 9.1 and the sixth pilot-operated overflow valve 9.2 are used to protect the propulsion and travel multi-way valve 9 . The third overflow valve 9.3 is connected with the fourth decompression valve 9.4 and is used to limit the reduced pressure ...

Embodiment 3

[0085] This embodiment provides a crawler mining jumbo configured with the electro-hydraulic control system described in Embodiment 1 or Embodiment 2.

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Abstract

The invention discloses an electro-hydraulic control system and a crawler-type mining trolley. The electro-hydraulic control system comprises a rock drilling electro-proportional control valve, a propulsion electro-proportional multi-way valve, a rotation electro-proportional multi-way valve and a walking multi-way valve. The rock drilling electro-proportional control valve is connected with the impactor and the shuttle valve group and is used for electro-proportional adjustment of impact pressure; the propulsion electric proportional multi-way valve is connected with the propulsion oil cylinder and the shuttle valve group and is used for electrically and proportionally adjusting the propulsion pressure and the propulsion speed; the rotary electric proportional multi-way valve is connected with the electric proportional overflow valve and the rotary motor and is used for electrically and proportionally adjusting the rotary pressure and the rotary speed; and the walking multi-way valve is connected with the pilot control valve group, the hydraulic control pilot proportional handle, the walking remote control valve group and the walking speed reducer, and is used for realizing on-vehicle and off-vehicle walking control actions. According to the invention, the impact pressure, the propulsion pressure and the propulsion speed can be accurately controlled, the requirements of various rotation speed working conditions on different rotation speeds are met, and an operator can control the walking action on and under the vehicle.

Description

technical field [0001] The invention belongs to the technical field of mining equipment for underground mines, and in particular relates to an electro-hydraulic control system and a crawler mining trolley. Background technique [0002] Mining drilling rigs, also known as mining rock drilling rigs, are used for drilling production holes in underground mining, and are the preferred equipment for the high-section caving mining process without pillars. At present, the control system of mining trolleys mostly adopts full hydraulic control, which cannot achieve precise control of impact, rotation, propulsion speed and pressure, such as high-speed retraction of the impactor, low-speed opening, medium-speed drilling, and slow-speed upper rod, etc., which cannot be done. When it comes to stepless anti-jamming, it is impossible to protect the impactor and drilling tools well, and it is also unable to meet the needs of different working conditions for the rotation speed. For example, f...

Claims

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Application Information

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IPC IPC(8): F15B11/17F15B13/02F15B21/08E21C35/24
Inventor 吴佼赵建东王伟周忠尚谭海南玖驻
Owner XUZHOU XUGONG FOUND CONSTR MACHINERY