CN-121993028-A - Mining anchor bolt supporting device and hydraulic anchor bolt drill carriage

Abstract

The invention discloses a mining anchor bolt supporting device and a hydraulic anchor bolt drill carriage, wherein the mining anchor bolt supporting device is provided with a first state and a second state, when at least one of the pressure of cooling liquid of a cooling hole and the flow rate of the cooling liquid of the cooling hole is lower than a preset value, an anchor hole drilling assembly stops drilling work, and when the driving pressure of a drilling box and/or the feeding pressure of the drilling box is higher than the preset value, the drilling box drives a drill rod to retract a preset distance in a drill hole and reciprocate within a preset range. The mining anchor bolt supporting device can adapt to various complex and changeable working conditions, saves the operation time and reduces the labor cost and the labor intensity.

Inventors

• LAN HUIMIN
• Mi Xiongwei
• ZHU ZHENTIAN
• QIU WEIJIAN
• LIU CHANGLONG
• AN LEI
• HU LINGYUN
• KANG PENG
• LV JISHUANG
• SHEN JINJIE
• WANG DIANWU
• WEI SHUAI
• SANG SHENGYUAN
• MA QIJIE
• JIAO XIAOFENG

Assignees

• 山西天地煤机装备有限公司
• 中国煤炭科工集团太原研究院有限公司

Dates

Publication Date

20260508

Application Date

20260204

Claims (7)

1. 1. A mining anchor bolt support device, comprising: A frame; The anchor hole drilling assembly comprises a drilling box and a drill rod, the drilling box is arranged on the frame and can move along the height direction of the frame relative to the frame, the drill rod is arranged on the drilling box, the drilling box drives the drill rod to rotate around the axial direction of the drill rod, the drilling box drives the drill rod to move around the drill rod, the cooling hole is suitable for being filled with cooling liquid, so that the cooling liquid is sprayed out through the cooling hole to cool and cool the drill rod, The anchor hole drilling assembly is provided with a first state and a second state, in the first state, when at least one of the pressure of cooling liquid in the cooling hole and the flow rate of the cooling liquid in the cooling hole is lower than a preset value, the anchor hole drilling assembly stops drilling operation, and in the second state, when the driving pressure of the drilling box and/or the feeding pressure of the drilling box is higher than the preset value, the drilling box drives the drill rod to retract a preset distance in the drilling hole and reciprocate within a preset range until the feeding pressure is smaller than the preset value, and the anchor hole drilling assembly resumes drilling operation.
2. 2. The mining bolt support apparatus of claim 1, further comprising a first monitoring assembly disposed on the bolt hole drilling assembly, the first monitoring assembly configured to monitor pressure and flow rate within the cooling hole, wherein in the first state, the first monitoring assembly monitors that the pressure of the cooling fluid within the cooling hole is less than 0.6Mpa and/or the first monitoring assembly monitors that the flow rate of the cooling fluid within the cooling hole is reduced by more than thirty percent within three seconds, the bolt hole drilling assembly ceases drilling operations.
3. 3. The mining anchor bolt support device of claim 1, further comprising a second monitoring assembly provided on the anchor hole drilling assembly, the second monitoring assembly being configured to monitor a driving pressure of the drill box and a feed pressure of the drill box, in the second state, the drill box driving pressure being increased by 4Mpa and more within 3 seconds, and the feed pressure of the drill box being increased by 4Mpa and more, the drill box driving the drill rod to retract a preset distance within the borehole and reciprocate within a preset range until the feed pressure is less than 3Mpa, the anchor hole drilling assembly resuming drilling operations.
4. 4. A mining bolt support according to claim 3, wherein the second condition comprises a first sub-condition in which the anchor hole drilling assembly resumes drilling operation when the feed pressure and the drive pressure are both less than 3Mpa, and a second sub-condition in which the feed pressure is less than 3Mpa and the drive pressure is greater than 3Mpa, the anchor hole drilling assembly ceases drilling operation.
5. 5. The mining anchor bolt support device of claim 1, wherein the predetermined distance is 35mm-45mm and the predetermined range is 15mm-25mm.
6. 6. The mining anchor bolt support device according to claim 1, wherein the anchor hole drilling assembly further comprises a collecting seat, the collecting seat is arranged on the frame and located above the drill box, a through hole penetrating through the collecting seat in the height direction of the frame is formed in the collecting seat, the drill rod penetrates through the through hole to be arranged in the roadway in a penetrating mode, and the collecting seat is used for collecting cooling liquid flowing out of the drill rod.
7. 7. A hydraulic rock bolt rig comprising a mine bolt support apparatus as claimed in any one of claims 1 to 6.

Description

Mining anchor bolt supporting device and hydraulic anchor bolt drill carriage Technical Field The invention relates to the field of coal mining, in particular to a mining anchor bolt supporting device and a hydraulic anchor bolt drill carriage. Background In the coal mine excavating operation, the anchor bolt support is a main mode of roadway support, and can effectively ensure production safety. The anchor bolt support usually needs to sequentially perform the steps of anchor hole drilling, anchor agent filling, anchor bolt installation and the like. In the related art, the mine anchor bolt supporting device cannot predict the faults of blocking and jamming, and is manually intervened after the related faults occur, so that on one hand, drilling is scrapped, the working efficiency is reduced, on the other hand, the abrasion or damage of a drilling tool is increased, and the working cost is increased. Disclosure of Invention The present invention has been made based on the findings and knowledge of the inventors regarding the following facts and problems: In the related art, the supply state (pressure, flow rate) of the coolant is not monitored on line in real time. When the conditions such as coolant leakage, pipeline blockage, supply pump fault appear, coolant pressure or flow can reduce unusually, and equipment can't in time discern this type unusual, still continuously carry out drilling operation, lead to drilling rod, drill bit because of lacking effective cooling lubrication, produce high temperature wearing and tearing fast, appear drill bit high temperature annealing inefficacy even, have not only increased consumptive material loss cost, still probably initiate potential safety hazards such as drilling card boring, pore wall collapse. In addition, the geological condition of the underground roadway is complex, and abnormal conditions such as hard rock interlayer, rock powder accumulation, drill bit clamping stagnation and the like are easily encountered in the drilling process, so that the driving pressure (the pressure corresponding to the rotation torque) or the feeding pressure (the pressure corresponding to the pushing resistance) of the drilling box is suddenly increased. In the related art, the problems are usually treated only by manual shutdown checking or forced feeding, the response of the manual shutdown is delayed, equipment such as drill rod bending, drill bit tipping and the like is easy to damage, and forced feeding can further aggravate the concentration of resistance, cause overload shutdown of the equipment, even cause drilling scrapping, and seriously affect the operation continuity and efficiency. Therefore, the embodiment of the invention provides the mining anchor rod supporting device which is simple in structure, high in drilling operation efficiency and long in service life. The embodiment of the invention provides a hydraulic anchor rod drill carriage with high working efficiency and simple structure. The mining anchor bolt supporting device is characterized by comprising a frame and an anchor bolt drilling assembly, wherein the anchor bolt drilling assembly comprises a drilling box and a drill rod, the drilling box is arranged on the frame and can move along the height direction of the frame relative to the frame, the drill rod is arranged on the drilling box, the drilling box drives the drill rod to rotate around the axial direction of the drill rod and drives the drill rod to move around the drill rod, the cooling holes are suitable for being filled with cooling liquid so that the cooling liquid is sprayed out through the cooling holes to cool and cool the drill rod, the anchor bolt drilling assembly is provided with a first state and a second state, in the first state, the anchor bolt drilling assembly stops drilling work when at least one of the pressure of the cooling liquid of the cooling holes and the flow rate of the cooling liquid of the cooling holes is lower than a preset value, in the second state, the drilling box drives the drilling box to retract in the preset range when the driving pressure of the drilling box and/or the feeding pressure of the drilling box is higher than the preset value, and the drilling box moves back to the preset range until the drilling pressure is equal to the preset value, and drilling operation resumes. According to the mining anchor bolt supporting device, the real-time on-line monitoring of the flow and the pressure of the cooling liquid in the cooling hole is realized through the first state, abnormal conditions such as blockage of a pipeline of the cooling hole and the like can be timely prevented, the defects of effective cooling and lubrication of a drill rod and a drill bit caused by insufficient supply of the cooling liquid are avoided, equipment maintenance cost and replacement frequency are reduced, the driving pressure for driving the drill rod to rotate through the drill box and the feeding pressure for driving the dr