Underground coal mine roadway drilling and joint-cutting depth detector device
By designing a drilling depth detector for underground tunnels of coal mines, and using handwheels and thread scales to read the depth of the cut joint, the problem of inability to measure the drilling depth in the prior art is solved, and the effect of accurate measurement and easy operation is achieved.
Patent Information
- Application Number
- CN202422639963.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing technology lacks a device that can effectively measure the depth of cut joints in underground drilling of coal mines, which cannot meet the production needs of underground construction of coal mines.
A depth detector device for drilling holes in the underground tunnel of coal mines is designed, including pulling wires, handwheels, handles, connecting rods, depth rulers, lead pipes, torsion springs, support shafts, rotation shafts, connection points and probes. Through the coordination of handwheel rotation and pulling wires, the depth of the cut-slit is read using a thread scale.
It realizes accurate measurement of the drilling hole cut depth. The device is compact in structure and simple in operation. It is suitable for different drilling depths and does not require electrical sensors. It is suitable for underground use of coal mines.
Smart Images
Figure CN223283571U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a coal mine underground tunnel drilling slot depth detector device, in particular to a device capable of measuring the slot depth in a mine roof drilling hole. Background Art
[0002] At present, most of the construction methods for leaving tunnels along the goaf in coal mines adopt the 110 method: that is, at the top of the excavation tunnel, holes are drilled upward at a certain angle, with the diameter of the holes ranging from 55 to 75 mm, the height of the holes ranging from 10 to 25 m, and the hole spacing being about 500 mm. Then, directional blasting energy-gathering tubes are placed in the boreholes for directional blasting. Another method is to make directional hydraulic slits in the boreholes. The slit cutting method is to insert a water jet nozzle into the borehole to make two axial slits. The depth of the slits should reach about 200 mm. This requires an instrument that can be inserted into the borehole to measure the slit depth to meet production needs. However, there is currently no device that can detect the borehole to measure the slit depth to solve this problem. Summary of the Invention
[0003] The utility model is to solve the problem that "most of the construction methods for leaving lanes along the goaf in coal mines adopt the 110 method: that is, at the top of the excavation lane, holes are drilled upward at a certain angle, the diameter of the holes is between 55 and 75 mm, the height of the holes is between 10 and 25 m, and the hole spacing is about 500 mm, and then a directional blasting energy-gathering tube is placed in the borehole to perform directional blasting; another method is to perform directional hydraulic slits in the borehole, and the slit cutting method is to extend a water jet nozzle into the borehole to perform axial cutting of two slits, and the depth of the slit is to reach about 200 mm, which requires an instrument that can be extended into the borehole to measure the slit depth to meet production needs; however, there is currently no device that can detect the borehole to measure the slit depth to solve this problem", and a borehole slit depth detector device for lanes in coal mines is proposed.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A coal mine underground tunnel drilling and cutting depth detector device, including a pull wire 1, a handwheel 2, a handle 3, a connecting rod 4, a depth gauge 5, a lead tube 6, a torsion spring 7, a support shaft 8, a rotating shaft 9, a connecting point 10, a probe 11, a fixing bolt 12, and a threaded scale 13; it is characterized in that: the depth gauge 5 is installed on the rotating shaft 9, the rotating shaft 9 is installed in the hole of the support shaft 8, the torsion spring 7 is inserted outside the support shaft 8, and the support shaft 8 is tightened in the bottom groove of the probe 11; the handwheel 2 is connected to the threaded scale 13, screwed in the handle 3, the handle 3 is screwed on the lower side of the connecting rod 4, the lead tube 6 is connected to the upper side of the connecting rod 4, and the lead tube 6 is screwed on the lower side of the probe 11; the upper end of the pull wire 1 is connected to the connecting point 10, and then passes through the lead tube 6, the connecting rod 4, the handle 3, and the center hole of the handwheel 2 respectively, to form a coal mine underground tunnel drilling and cutting depth detector device.
[0006] In order to further facilitate the control operation, a threaded scale 13 is installed on the hand wheel 2, which makes it more convenient to observe the cutting depth reading.
[0007] The utility model has the following advantages over the existing measuring devices:
[0008] 1. Test function with different drilling depths: The length of the connecting rod 4 can be adjusted, and the probe 11 can be adjusted to different depths in the drill hole.
[0009] 2. It has the function of not requiring an electric sensor: a threaded scale 13 is installed in the device, and the test depth can be read by stretching the angle of the depth gauge.
[0010] 3. Compact structure: A torsion spring 7 is installed between the probe 11 and the depth gauge 5, which can retract the depth gauge and save space.
[0011] Simple structure: A coal mine underground tunnel drilling and cutting depth detector device, which is light in weight, complete in specifications and models, easy to install, and easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.
[0013] Figure 1 This is a structural diagram of a drilling and cutting depth detector for underground coal mine tunnels;
[0014] In the picture:
[0015] Pull wire 1, handwheel 2, handle 3, connecting rod 4, depth gauge 5, lead tube 6, torsion spring 7, support shaft 8, rotating shaft 9, connection point 10, probe 11, fixing bolt 12. DETAILED DESCRIPTION
[0016] A coal mine underground tunnel drilling and cutting depth detector device, including a pull wire 1, a handwheel 2, a handle 3, a connecting rod 4, a depth gauge 5, a lead tube 6, a torsion spring 7, a support shaft 8, a rotating shaft 9, a connecting point 10, a probe 11, a fixing bolt 12, and a threaded scale 13; it is characterized in that: the depth gauge 5 is installed on the rotating shaft 9, the rotating shaft 9 is installed in the hole of the support shaft 8, the torsion spring 7 is inserted outside the support shaft 8, and the support shaft 8 is tightened in the bottom groove of the probe 11; the handwheel 2 is connected to the threaded scale 13, screwed in the handle 3, the handle 3 is screwed on the lower side of the connecting rod 4, the lead tube 6 is connected to the upper side of the connecting rod 4, and the lead tube 6 is screwed on the lower side of the probe 11; the upper end of the pull wire 1 is connected to the connecting point 10, and then passes through the lead tube 6, the connecting rod 4, the handle 3, and the center hole of the handwheel 2 respectively, to form a coal mine underground tunnel drilling and cutting depth detector device.
[0017] When working, the coal mine underground tunnel drilling slit depth detector device is characterized in that the left hand holds the handle 3, and the probe 11 is inserted into the top plate drilled hole of the excavation tunnel at a certain depth. The right hand rotates the handwheel 2 counterclockwise, and the pull wire 1 applies tension to the depth gauge 5 through the connecting rod 4, the lead tube 6 and the connection point 10, and overcomes the torsion of the torsion spring 7; the depth gauge 5 rotates in the support shaft 8 through the rotating shaft 9. When the depth gauge 5 rotates to the top of the drilling slit and reaches the top, the right hand cannot rotate the handwheel 2. At this time, the value of the threaded scale 13 is observed to read the depth value of the slit; the handwheel 2 is rotated clockwise, and the depth gauge 5 retracts into the probe 11 under the torsion of the torsion spring 7, and then the probe 11 is taken out of the hole and retracted through the handle 3, playing the role of a coal mine underground tunnel drilling slit depth detector device.
[0018] When stopping work, rotate the handwheel 2 clockwise, and the depth gauge 5 will shrink into the probe 11 under the torsion of the torsion spring 7. Then take the probe 11 out of the hole through the handle 3, clean the entire device with clean water, and place it in a ventilated and dry place.
[0019] Practice has proved that in a coal mine underground tunnel drilling and cutting depth detector device manufactured according to the above implementation plan, the length of the connecting rod 4 can be adjusted between 8m, 15m, 20m, and 25m, and the test cutting depth can be adjusted between 100mm, 200mm, and 300mm; a coal mine underground tunnel drilling and cutting depth detector device has stable operation, flexible adjustment, and is safe and reliable.
Claims
1. A coal mine underground tunnel drilling seam depth detector device, comprising a pull wire (1), a hand wheel (2), a handle (3), a connecting rod (4), a depth gauge (5), a lead tube (6), a torsion spring (7), a support shaft (8), a rotating shaft (9), a connecting point (10), a probe (11), a fixing bolt (12), and a threaded scale (13); characterized in that: The depth gauge (5) is mounted on a rotating shaft (9), which is mounted in a hole of a support shaft (8), a torsion spring (7) is inserted outside the support shaft (8), and the support shaft (8) is screwed into a bottom groove of a probe (11); the hand wheel (2) is connected to a threaded scale (13), screwed into a handle (3), the handle (3) is screwed onto the lower side of a connecting rod (4), a lead tube (6) is connected to the upper side of the connecting rod (4), and the lead tube (6) is screwed onto the lower side of the probe (11); the upper end of the pull wire (1) is connected to a connection point (10), and then passes through the lead tube (6), the connecting rod (4), the handle (3), and the center hole of the hand wheel (2), respectively, and the probe (11) is fixed by a fixing bolt (12), thereby forming a coal mine underground tunnel drilling and cutting depth detector device.
2. A coal mine underground tunnel drilling and cutting depth detector device according to claim 1, characterized in that The left hand holds the handle (3), and the probe (11) is inserted into the top plate borehole of the tunnel at a certain depth. The right hand rotates the hand wheel (2) counterclockwise, and the pull wire (1) applies tension to the depth gauge (5) through the connecting rod (4), the lead tube (6) and the connection point (10), and overcomes the torsion of the torsion spring (7); the depth gauge (5) rotates in the support shaft (8) through the rotating shaft (9). When the depth gauge (5) rotates to the top of the drilled slit, the right hand cannot rotate the hand wheel (2). At this time, the value of the thread scale (13) is observed to read the depth value of the slit. By rotating the hand wheel (2) clockwise, the depth gauge (5) is retracted into the probe (11) under the torsion force of the torsion spring (7), and the probe (11) is then taken out of the hole by the handle (3), thereby serving as a coal mine underground tunnel drilling and cutting depth detector device.