A rock drilling device for installing anchor rods

Abstract

The present invention belongs to the technical field of rock drilling, and provides a rock drilling device for installing anchor rods, comprising a rock drilling unit for drilling rock strata, a power unit for driving the rock drilling unit to rotate and move, and a protective unit for preventing rock fragments from splashing and injuring people when the rock drilling unit drills the rock strata; the present invention rotates the bearing seat clockwise to allow the drill rod to further move along the inner wall of the bearing seat, thereby causing one end of the drill rod to gradually fit with the adjusting block fixed to one side of the crushing knife, so that the drill rod pushes the crushing knife through the adjusting block to gradually extend out of the accommodating groove, thereby adjusting the drilling aperture of the crushing knife, so that the device can be adjusted according to the required drilling aperture, thereby expanding the application range of the device, reducing construction costs, and making it unnecessary for operators to carry drill bits of different aperture sizes to drill grouting holes of different apertures when installing anchor rods.

Description

Technical Field

[0001] The invention belongs to the technical field of rock drilling, in particular to a rock drilling device for installing an anchor rod. Background Art

[0002] The rock drilling device can effectively drill grouting holes on the surface of the rock formation, making it easier to install anchor rods, thereby reinforcing the rock formation and reducing the probability of rock collapse.

[0003] An existing patent (patent publication number: CN114320164B) discloses an adjustable drill bit for coal mine gas extraction drilling and a method for using the same. The invention discloses an adjustable drill bit that uses high-pressure water flow to expand a borehole with an existing aperture, without the need to replace the reaming drill bit, and can timely seal the spray hole through a provided sealing airbag, and a method for using the same. The invention is characterized in that the adjustable drill bit includes a drilling assembly, a reaming assembly provided on the drilling assembly, and a sealing assembly provided on the drilling assembly. The reaming assembly sprays high-pressure water flow to expand the borehole drilled by the drilling assembly, and the sealing assembly can timely seal the borehole when a spray hole occurs.

[0004] Due to the different geological conditions of rock formations in different regions, rocks can be divided into soft soil formations and hard rock formations. In soft soil formations, due to the poor stability of the formation, excessively large apertures can easily lead to hole wall collapse, so the aperture of grouting holes is relatively small. For example, in silty soft soil, the aperture may be 30-40mm.

[0005] Hard rock formations have high strength and can withstand larger borehole diameters. When grouting in hard rock formations, the borehole diameter can be adjusted according to the specific grouting process and requirements. For deep hole grouting, the borehole diameter may be 50-100mm or even larger to accommodate the injection of large amounts of slurry and its diffusion within the rock fissures.

[0006] Different grouting materials in the same geological formation have different requirements for pore size. When using cement-water glass double liquid slurry with coarser particles, a larger pore size is required, generally 50-80mm, to ensure that the slurry can pass through the grouting hole smoothly without clogging; if chemical slurry (such as acrylate slurry) is used, due to its good fluidity, the pore size can be relatively small, around 10-30mm.

[0007] However, most existing rock drilling devices cannot be adjusted according to the actual required hole diameter, resulting in the need to prepare multiple sets of drill bits with different hole diameters when drilling grouting holes, which increases construction costs and increases the burden on operators. Summary of the Invention

[0008] In order to solve the above technical problems, the present invention provides a rock drilling device for installing anchor rods, so as to solve the problem in the prior art that the process is relatively cumbersome and requires more manual participation, thereby affecting production efficiency.

[0009] A rock drilling device for installing an anchor bolt comprises a rock drilling unit for drilling into a rock formation, a power unit for driving the rock drilling unit to rotate and move, and a protective unit for preventing rock fragments from splashing and injuring people when the rock drilling unit drills into the rock formation. The rock drilling unit comprises a drill rod and a drill bit assembly, the power unit drives the drill bit assembly to drill into the rock formation via the drill rod, and the protective unit is slidably connected to the drill rod.

[0010] The drill bit assembly includes a bearing seat threadedly connected to one end of the drill rod, a plurality of accommodating grooves are vertically opened on the bearing seat, a crushing knife is arranged in the accommodating groove, the top of the crushing knife extends out of the accommodating groove, and sliding grooves are horizontally opened on the inner walls on both sides of the accommodating groove, a slider is slidably connected in the sliding groove, the slider is fixedly connected to the crushing knife, an adjusting block is fixedly connected to one side of the crushing knife, the adjusting block extends out of the accommodating groove, and the adjusting block is slidably connected to one end of the drill rod, and blocking members are provided between adjacent crushing knives.

[0011] Preferably, a plurality of docking blocks are fixedly connected to the drill rod, a water supply hole and a sewage discharge hole are opened at one end of the drill rod, a water supply pipe and a sewage discharge pipe are horizontally penetrated through the drill rod, the water supply pipe and the sewage discharge pipe are both fixedly connected to the drill rod, a water supply ring and a sewage discharge ring are fixedly connected to the drill rod, the water supply pipe is connected to the water supply ring, and the sewage discharge pipe is connected to the sewage discharge ring.

[0012] Preferably, the water supply ring and the sewage discharge ring are respectively connected to the first annular water blocking plate and the second annular water blocking plate through bearings, and the first and second rubber hoses are respectively penetrated by the first and second annular water blocking plates. The first and second rubber hoses are respectively fixedly connected to the first and second annular water blocking plates, the first rubber hose is connected to the water supply ring, and the second rubber hose is connected to the sewage discharge ring.

[0013] Preferably, symmetrical and horizontal accommodating holes are provided on the crushing knife, and the symmetrical accommodating holes are respectively located above and below the slider. A first elastic member is provided in the accommodating hole, and both ends of the first elastic member are fixedly connected to a limiting block, and the limiting block is slidably connected to the accommodating hole. A first limiting rod is fixedly connected to the limiting block, and one end of the first limiting rod extends out of the accommodating hole.

[0014] Preferably, limiting grooves are symmetrically and horizontally opened on the inner walls on both sides of the accommodating groove, and the symmetrically arranged limiting grooves are respectively located above and below the sliding groove. A limiting rack is fixedly connected to the inner wall of the limiting groove, and one end of the first limiting rod extends out of the accommodating hole and engages with the limiting rack.

[0015] Preferably, a plurality of arc grooves are vertically opened on the bearing seat, and the plurality of arc grooves are connected one by one with a plurality of slide grooves. Rotating shafts are symmetrically arranged in the arc grooves, and the rotating shafts are connected to the inner walls of the arc grooves through bearings. The symmetrically arranged rotating shafts are connected through transmission belts, and the slider is fixedly connected to the transmission belt.

[0016] Preferably, the blocking member includes an arc-shaped connecting frame arranged between adjacent crushing knives, an arc-shaped baffle is fixedly connected to the inner side of the arc-shaped connecting frame, the arc-shaped connecting frame and the arc-shaped baffle are both slidably connected to the top of the bearing seat, connecting grooves are provided at both ends of the arc-shaped connecting frame, and connecting holes are provided on the arc-shaped connecting frame, and the connecting grooves at both ends of the arc-shaped connecting frame are connected through the connecting holes.

[0017] Preferably, a second elastic member is provided in the connecting hole, and connecting strips are fixedly connected at both ends of the second elastic member. The connecting strip is slidably connected to the connecting groove, and one end of the connecting strip extends out of the connecting groove, and the end of the connecting strip extending out of the connecting groove is fixedly connected to the crushing knife.

[0018] Preferably, the power unit includes a stepper motor, the output end of the stepper motor is detachably connected to the drill rod, the bottom of the stepper motor is fixedly connected to a base, a slide rail is provided at the bottom of the stepper motor, the base is slidably connected to the slide rail, a bottom support is fixedly connected to the slide rail, an electric telescopic rod is fixedly connected to the inner wall of one side of the slide rail, and the output end of the electric telescopic rod is fixedly connected to the base.

[0019] Preferably, the protective unit includes a protective cover slidably connected to the drill rod, a plurality of docking grooves are vertically opened on the top of the inner wall of the protective cover, a third elastic member is provided on the top of the protective cover, one end of the third elastic member is fixedly connected to the protective cover, and the other end of the third elastic member is fitted with the bottom support, and a plurality of second limit rods are fixedly connected to the top of the inner wall of the protective cover.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention rotates the bearing seat clockwise to allow the drill rod to further move along the inner wall of the bearing seat, so that one end of the drill rod gradually fits into the adjusting block fixed to one side of the crushing knife, so that the drill rod pushes the crushing knife through the adjusting block to gradually extend out of the accommodating groove, thereby adjusting the drilling aperture of the crushing knife, so that the device can be adjusted according to the required drilling aperture, thereby expanding the application range of the device, reducing construction costs, and ensuring that operators do not need to carry drill bits of different aperture sizes to drill grouting holes of different apertures when installing anchor rods.

[0022] 2. The present invention drives the slider to move along the slide groove by the crushing knife, and the slider drives the transmission belt to move along the rotating axis symmetrically arranged in the arc groove. Since the transmission belt is provided with an aperture scale, the operator can read the aperture of the current crushing knife drilling according to the exposed part of the transmission belt, thereby improving the accuracy of the aperture adjustment of the device and reducing the probability that the drilled aperture does not match the actual required aperture.

[0023] 3. The present invention drives the first limit rod to move along the limit groove by the crushing knife. Under the action of the first elastic member, the first limit rod repeatedly engages and separates with the limit rack, so that when the device reaches the required hole diameter, the first limit rod engages with the limit rack, thereby limiting the crushing knife, further reducing the probability that the crushing knife will deviate during the drilling process, thereby causing the drilled hole diameter to be inconsistent with the actual required hole diameter.

[0024] 4. The present invention cooperates with the third elastic member and the bottom bracket to push the protective cover to always fit the rock surface, thereby reducing the probability of rocks splashing and injuring people due to the centrifugal force of the drill bit assembly when the device is drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic structural diagram of the rock drilling unit of the present invention.

[0027] Figure 3 It is a schematic diagram of the drill rod structure of the present invention.

[0028] Figure 4 It is a schematic cross-sectional view of the drill rod structure of the present invention.

[0029] Figure 5 It is a structural schematic diagram of the drill bit assembly of the present invention.

[0030] Figure 6 It is a schematic diagram of the bearing seat and the crushing knife of the present invention.

[0031] Figure 7 It is a structural schematic diagram of the bearing seat of the present invention.

[0032] Figure 8 It is a schematic structural diagram of the crushing knife of the present invention.

[0033] Figure 9 It is a schematic cross-sectional view of the bearing seat structure of the present invention.

[0034] Figure 10 It is a schematic structural diagram of the blocking member of the present invention.

[0035] Figure 11 It is a structural schematic diagram of the arc-shaped connection frame of the present invention.

[0036] Figure 12 It is a structural schematic diagram of the protection unit of the present invention.

[0037] In the figure: 1. rock drilling unit; 11. drill rod; 111. docking block; 112. water supply hole; 113. sewage discharge hole; 114. water supply pipe; 115. sewage discharge pipe; 116. water supply ring; 117. sewage discharge ring; 118. first annular water blocking plate; 119. second annular water blocking plate; 1110. first rubber hose; 1111. second rubber hose; 12. drill bit assembly; 121. bearing seat; 122. receiving groove; 123. crushing knife; 124. slide groove; 125. slider; 126. adjustment block; 127. blocking member; 1271. arc-shaped connecting frame; 1272. arc-shaped baffle; 1273. Connecting groove; 1274. Connecting hole; 1275. Second elastic member; 1276. Connecting strip; 128. Accommodating hole; 129. First elastic member; 1210. Limiting block; 1211. First limiting rod; 1212. Limiting groove; 1213. Limiting rack; 1214. Arc groove; 1215. Rotating shaft; 1216. Transmission belt; 2. Power unit; 21. Stepping motor; 22. Base; 23. Slide rail; 24. Bottom support; 25. Electric telescopic rod; 3. Protection unit; 31. Protective cover; 32. Docking groove; 33. Third elastic member; 34. Second limiting rod. DETAILED DESCRIPTION

[0038] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0039] The present invention provides a rock drilling device for installing an anchor bolt, comprising a rock drilling unit 1 for drilling a rock formation, a power unit 2 for driving the rock drilling unit 1 to rotate and move, and a protective unit 3 for preventing rock fragments from splashing and injuring people when the rock drilling unit 1 is drilling the rock formation. The rock drilling unit 1 comprises a drill rod 11 and a drill bit assembly 12. The power unit 2 drives the drill bit assembly 12 to drill the rock formation via the drill rod 11. The protective unit 3 is slidably connected to the drill rod 11. The drill bit assembly 12 comprises a bearing seat 121 threadedly connected to one end of the drill rod 11 for supporting components in the drill bit assembly 12. The bearing seat 121 is vertically provided with a plurality of receiving grooves 122 for accommodating components in the drill bit assembly 12. A crushing knife 123 for crushing the rock formation is provided in the accommodating groove 122, and the top of the crushing knife 123 extends out of the accommodating groove 122. Horizontal slide grooves 124 are provided on the inner walls on both sides of the accommodating groove 122 to limit the crushing knife 123. A slider 125 for limiting the crushing knife 123 is slidably connected in the slide groove 124. The slider 125 is fixedly connected to the crushing knife 123. An adjusting block 126 for adjusting the distance of the crushing knife 123 extending out of the accommodating groove 122 is fixedly connected to one side of the crushing knife 123. The adjusting block 126 extends out of the accommodating groove 122, and the adjusting block 126 is slidably connected to one end of the drill rod 11. Blocking members 127 are provided between adjacent crushing knives 123 to prevent sewage from leaking out of the grouting hole during drilling.

[0040] It should be noted that: Figure 5 and Figure 6 As shown, the number of the accommodating slots 122 , the number of the crushing blades 123 and the number of the blocking members 127 are equal, and the accommodating slots 122 are evenly distributed on the supporting base 121 .

[0041] It should be noted that: the number of crushing knives 123 can be one, two or more. The more crushing knives 123 there are, the higher the drilling efficiency is, but the corresponding cost is also higher. Figure 1 、 Figure 2 、 Figure 5 and Figure 6 Only four are taken as examples.

[0042] A plurality of docking blocks 111 for limiting the protection unit 3 are fixedly connected to the drill rod 11. A water delivery hole 112 for delivering water to the crushing knife 123 and a sewage hole 113 for discharging the sewage mixed with gravel, soil and dust generated during the drilling process of the crushing knife 123 are opened at one end of the drill rod 11. A water delivery pipe 114 for delivering water and a sewage discharge pipe 115 for delivering sewage are horizontally penetrated on the drill rod 11. The water delivery pipe 114 and the sewage discharge pipe 115 are both fixedly connected to the drill rod 11. A water delivery ring 116 for transferring water and a sewage discharge ring 117 for transferring sewage are fixedly connected to the drill rod 11. The water delivery pipe 114 is connected to the water delivery ring 116, and the sewage discharge pipe 115 is connected to the sewage discharge ring 117; the water delivery ring 116 and the sewage ring 117 are respectively connected through bearings with a first annular water blocking plate 118 to prevent water from flowing out of the water supply ring 116 and causing waste of resources, and a second annular water blocking plate 119 to prevent sewage from flowing out of the sewage ring 117 and polluting the environment. The first annular water blocking plate 118 and the second annular water blocking plate 119 are respectively penetrated by a first rubber hose 1110 connected to a water pump to supply water to the device and a second rubber hose 1111 connected to an air suction device. The first rubber hose 1110 and the second rubber hose 1111 are respectively fixedly connected to the first annular water blocking plate 118 and the second annular water blocking plate 119. The first rubber hose 1110 is connected to the water supply ring 116, and the second rubber hose 1111 is connected to the sewage ring 117.

[0043] It should be noted that the first rubber hose 1110 and the second rubber hose 1111 can be connected to a water supply device and a sewage discharge device respectively.

[0044] The crushing knife 123 is symmetrically provided with a receiving hole 128 for receiving the crushing knife 123. The symmetrically provided receiving holes 128 are respectively located above and below the slider 125. A first elastic member 129 capable of elastic deformation is provided in the receiving hole 128. Both ends of the first elastic member 129 are fixedly connected with a limit block 1210 that moves along the receiving hole 128. The limit block 1210 is slidably connected to the receiving hole 128. A first limit rod 1211 for limiting the crushing knife 123 is fixedly connected to the limit block 1210. The first limit rod 1211 is fixedly connected to the limit block 1210. 211 extends out of an accommodating hole 128 at one end; limiting grooves 1212 are symmetrically and horizontally opened on the inner walls on both sides of the accommodating groove 122 to accommodate the end of the first limiting rod 1211 extending out of the accommodating hole 128, and the symmetrically arranged limiting grooves 1212 are respectively located above and below the slide groove 124, and a limiting rack 1213 is fixedly connected to the inner wall of the limiting groove 1212 to cooperate with the first limiting rod 1211 to limit the crushing knife 123, and the end of the first limiting rod 1211 extending out of the accommodating hole 128 is engaged with the limiting rack 1213.

[0045] A plurality of arc-shaped grooves 1214 for accommodating purposes are vertically opened on the supporting seat 121, and the plurality of arc-shaped grooves 1214 are connected one by one with the plurality of slide grooves 124. Rotating shafts 1215 for assisting movement are symmetrically arranged in the arc-shaped grooves 1214. The rotating shafts 1215 are connected to the inner wall of the arc-shaped grooves 1214 through bearings. The symmetrically arranged rotating shafts 1215 are connected through a transmission belt 1216, and the slider 125 is fixedly connected to the transmission belt 1216.

[0046] It should be noted that the transmission belt 1216 moves along with the slider 125, and the transmission belt 1216 is provided with a scale of aperture size, such as Figure 9 As shown, the operator can read the current hole diameter drilled by the crushing knife 123 based on the exposed portion of the transmission belt 1216.

[0047] It should be noted that the material of the transmission belt 1216 is preferably steel that is not easily deformed.

[0048] The blocking member 127 includes an arc-shaped connecting frame 1271 provided between adjacent crushing knives 123 to block the sewage generated during drilling. An arc-shaped baffle 1272 is fixedly connected to the inner side of the arc-shaped connecting frame 1271 to prevent sewage from leaking. The arc-shaped connecting frame 1271 and the arc-shaped baffle 1272 are both slidably connected to the top of the supporting seat 121. Both ends of the arc-shaped connecting frame 1271 are provided with a connecting groove 1273 for accommodating the function. The arc-shaped connecting frame 1271 is provided with a connecting hole 1274 for accommodating the function. The connecting grooves 1273 at both ends of the shaped connecting frame 1271 are connected through the connecting hole 1274; a second elastic member 1275 that can undergo elastic deformation is provided in the connecting hole 1274, and both ends of the second elastic member 1275 are fixedly connected with a connecting strip 1276 for blocking the sewage generated during drilling, and the connecting strip 1276 is slidably connected to the connecting groove 1273, and one end of the connecting strip 1276 extends out of the connecting groove 1273, and the end of the connecting strip 1276 extending out of the connecting groove 1273 is fixedly connected to the crushing knife 123.

[0049] The power unit 2 includes a stepper motor 21 that drives the drill rod 11 to rotate. The output end of the stepper motor 21 is detachably connected to the drill rod 11. The bottom of the stepper motor 21 is fixedly connected to a base 22 that supports and fixes the stepper motor 21. A slide rail 23 is provided at the bottom of the stepper motor 21 to limit the base 22. The base 22 is slidably connected to the slide rail 23. A base 24 is fixedly connected to the slide rail 23 to limit the protection unit 3 and support the drill rod 11. An electric telescopic rod 25 that drives the stepper motor 21 to move along the slide rail 23 is fixedly connected to the inner wall of one side of the slide rail 23. The output end of the electric telescopic rod 25 is fixedly connected to the base 22.

[0050] It should be noted that the stepping motor 21 can be replaced by any power device that can drive the drill rod 11 to rotate. Similarly, the electric telescopic rod 25 can be replaced by any driving device that can drive the power device to move along the slide rail 23.

[0051] It should be noted that the drilling angle of the device can be adjusted by installing a device such as a robotic arm at the bottom of the slide rail 23 that has the function of adjusting the drilling angle.

[0052] The protection unit 3 includes a protective cover 31 that is slidably connected to the drill rod 11 to prevent broken rocks from splashing and injuring people under the action of the centrifugal force of the drill bit assembly 12 during drilling. A plurality of docking grooves 32 that cooperate with the docking block 111 to limit the protective cover 31 are vertically opened on the top of the inner wall of the protective cover 31. A third elastic member 33 is provided on the top of the protective cover 31 to limit the protective cover 31. One end of the third elastic member 33 is fixedly connected to the protective cover 31, and the other end of the third elastic member 33 is in contact with the bottom support 24. A plurality of second limiting rods 34 are fixedly connected to the top of the inner wall of the protective cover 31.

[0053] It should be noted that the first elastic member 129, the second elastic member 1275 and the third elastic member 33 can be any elastic device with a rebound effect. Figure 8 、 Figure 9 、 Figure 11 and Figure 12 In this paper, only the spring is taken as an example.

[0054] It should be noted that the initial states of the first elastic member 129 and the second elastic member 1275 are both in a compressed state, and the initial state of the third elastic member 33 is in a non-compressed state.

[0055] Example 1: Figures 1-12 As shown, in this embodiment, when adjustment is required according to the borehole diameter, first, since the drill rod 11 is connected to the supporting seat 121 by a threaded connection, the supporting seat 121 is rotated clockwise so that the drill rod 11 further moves along the inner wall of the supporting seat 121, and then one end of the drill rod 11 gradually fits with the adjustment block 126 fixed to one side of the crushing knife 123, so that the drill rod 11 pushes the crushing knife 123 to gradually extend out of the accommodating groove 122 through the adjustment block 126, thereby adjusting the borehole diameter of the crushing knife 123, so that the device can be adjusted according to the required borehole diameter, expanding the scope of application of the device, so that when the operator installs the anchor rod, there is no need to carry drill holes of different diameters to drill grouting holes of different diameters.

[0056] It should be noted that when the crushing knife 123 has not extended out of the accommodating groove 122, the initial drilling diameter of the device is 30 mm. When the crushing knife 123 extends out of the limit of the accommodating groove 122, the drilling diameter of the device is 50 mm, so that the drilling diameter of the device can meet the requirements of drilling soft soil and hard rock formations, and can also meet the requirements of different grouting materials for drilling diameter.

[0057] It should be noted that: when the supporting seat 121 is initially threadedly connected to the drill rod 11, the second limiting rod 34 is in contact with the supporting seat 121, so that when the supporting seat 121 rotates and moves along the drill rod 11, the supporting seat 121 pushes the protective cover 31 to move along the drill rod 11 through the second limiting rod 34, so that the third elastic member 33 is compressed. When the supporting seat 121 is connected to the drill rod 11, that is, when the device is in the initial drilling aperture of 30 mm, the docking block 111 disengages from the docking groove 32, and the limit on the protective cover 31 is released, so that when the stepping motor 21 drives the drill rod 11 and the supporting seat 121 to rotate, the protective cover 31 does not rotate.

[0058] As the crushing knife 123 gradually extends out of the accommodating groove 122, the crushing knife 123 drives the slider 125 to move along the slide groove 124, and the slider 125 drives the transmission belt 1216 to move along the rotating axis 1215 symmetrically arranged in the arc groove 1214. Since an aperture scale is provided on the transmission belt 1216, the operator can read the aperture of the current hole drilled by the crushing knife 123 according to the exposed part of the transmission belt 1216, thereby improving the accuracy of the aperture adjustment of the device and reducing the probability that the drilled aperture does not match the actual required aperture.

[0059] As the crushing knife 123 gradually extends out of the accommodating groove 122, the crushing knife 123 drives the first limiting rod 1211 to move along the limiting groove 1212. Under the action of the first elastic member 129, the first limiting rod 1211 repeatedly engages and separates with the limiting rack 1213, so that when the device reaches the required aperture, the first limiting rod 1211 engages with the limiting rack 1213, thereby limiting the crushing knife 123, further reducing the probability that the crushing knife 123 will deviate during the drilling process, thereby causing the drilled hole diameter to be inconsistent with the actual required aperture.

[0060] It should be noted that during the process from engagement to separation and then engagement of the first limiting rod 1211 and the limiting rack 1213 , the crushing knife 123 actually moves along the limiting groove 1212 by one millimeter.

[0061] When the device is adjusted according to the actual required aperture, the drilling angle of the device can be adjusted by installing a mechanical arm or other device with the function of adjusting the drilling angle at the bottom of the slide rail 23. When the drilling angle adjustment is completed, the power device that can drive the drill rod 11 to rotate counterclockwise is started, so that the drill rod 11 drives the drill bit assembly 12 to rotate, and then the pushing device that can push the power device to move along the slide rail 23 is started, so that the device can drill into the rock formation.

[0062] During the drilling process, the protective cover 31 always adheres to the rock surface under the action of the third elastic member 33 and the base 24, thereby reducing the probability of rocks being broken during drilling and splashing and injuring people under the action of the centrifugal force of the drill bit assembly 12.

[0063] When the device drills to the required depth, the contact power device and the drill rod 11 are locked, and the operator can insert the anchor rod into the grouting hole through the hollow part of the drill rod 11, so that all parts of the anchor rod are located in the center of the grouting hole, reducing the probability of uneven force on the anchor rod after grouting is completed.

[0064] When the front end of the anchor rod reaches the deepest part of the borehole, the drill rod 11 and the drill bit assembly 12 are pulled out of the grouting hole by the dragging device, thereby completing the installation of the anchor rod.

[0065] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A rock drilling device for installing an anchor bolt, comprising: A rock drilling unit (1) for drilling a rock formation, a power unit (2) for driving the rock drilling unit (1) to rotate and move, and a protective unit (3) for preventing rock fragments from splashing and injuring people when the rock drilling unit (1) drills the rock formation, characterized in that the rock drilling unit (1) comprises a drill rod (11) and a drill bit assembly (12), the power unit (2) drives the drill bit assembly (12) to drill the rock formation via the drill rod (11), and the protective unit (3) is slidably connected to the drill rod (11); The drill bit assembly (12) includes a bearing seat (121) threadedly connected to one end of the drill rod (11), a plurality of receiving grooves (122) are vertically opened on the bearing seat (121), a crushing knife (123) is arranged in the receiving groove (122), the top of the crushing knife (123) extends out of the receiving groove (122), and a sliding groove (124) is horizontally opened on the inner wall of both sides of the receiving groove (122), a slider (125) is slidably connected in the sliding groove (124), the slider (125) is fixedly connected to the crushing knife (123), an adjusting block (126) is fixedly connected to one side of the crushing knife (123), the adjusting block (126) extends out of the receiving groove (122), and the adjusting block (126) is slidably connected to one end of the drill rod (11), and a blocking member (127) is provided between adjacent crushing knives (123); When adjustment is required according to the borehole diameter, the support seat (121) is rotated clockwise so that the drill rod (11) moves along the inner wall of the support seat (121), and one end of the drill rod (11) gradually fits with the adjustment block (126) fixed to one side of the crushing knife (123), so that the drill rod (11) pushes the crushing knife (123) through the adjustment block (126) to gradually extend out of the accommodating groove (122), thereby adjusting the borehole diameter of the crushing knife (123).

2. The rock drilling device for installing an anchor rod according to claim 1, characterized in that: A plurality of docking blocks (111) are fixedly connected to the drill rod (11). A water delivery hole (112) and a sewage discharge hole (113) are provided at one end of the drill rod (11). A water delivery pipe (114) and a sewage discharge pipe (115) are horizontally provided through the drill rod (11). Both the water delivery pipe (114) and the sewage discharge pipe (115) are fixedly connected to the drill rod (11). A water delivery ring (116) and a sewage discharge ring (117) are fixedly connected to the drill rod (11). The water delivery pipe (114) is in communication with the water delivery ring (116), and the sewage discharge pipe (115) is in communication with the sewage discharge ring (117).

3. The rock drilling device for installing an anchor rod according to claim 2, characterized in that: The water supply ring (116) and the sewage discharge ring (117) are respectively connected to a first annular water blocking plate (118) and a second annular water blocking plate (119) via bearings; a first rubber hose (1110) and a second rubber hose (1111) are respectively provided through the first annular water blocking plate (118) and the second annular water blocking plate (119); the first rubber hose (1110) and the second rubber hose (1111) are respectively fixedly connected to the first annular water blocking plate (118) and the second annular water blocking plate (119); the first rubber hose (1110) and the second rubber hose (1111) are respectively connected to the first annular water blocking plate (118) and the second annular water blocking plate (119); the first rubber hose (1110) is in communication with the water supply ring (116), and the second rubber hose (1111) is in communication with the sewage discharge ring (117).

4. The rock drilling device for installing an anchor rod according to claim 1, characterized in that: The crushing knife (123) is symmetrically and horizontally provided with a receiving hole (128), and the symmetrically provided receiving holes (128) are respectively located above and below the slider (125). A first elastic member (129) is provided in the receiving hole (128), and both ends of the first elastic member (129) are fixedly connected to a limiting block (1210), and the limiting block (1210) is slidably connected to the receiving hole (128). A first limiting rod (1211) is fixedly connected to the limiting block (1210), and one end of the first limiting rod (1211) extends out of the receiving hole (128).

5. The rock drilling device for installing an anchor bolt according to claim 4, characterized in that: Limiting grooves (1212) are symmetrically and horizontally provided on the inner walls on both sides of the accommodating groove (122), and the symmetrically arranged limiting grooves (1212) are respectively located above and below the sliding groove (124). A limiting rack (1213) is fixedly connected to the inner wall of the limiting groove (1212), and one end of the first limiting rod (1211) extending out of the accommodating hole (128) is engaged with the limiting rack (1213).

6. The rock drilling device for installing an anchor rod according to claim 1, characterized in that: A plurality of arcuate grooves (1214) are vertically provided on the bearing seat (121), and the plurality of arcuate grooves (1214) are connected one by one with the plurality of slide grooves (124). Rotating shafts (1215) are symmetrically provided in the arcuate grooves (1214), and the rotating shafts (1215) are connected to the inner wall of the arcuate grooves (1214) via bearings. The symmetrically provided rotating shafts (1215) are connected via a transmission belt (1216), and the slider (125) is fixedly connected to the transmission belt (1216).

7. The rock drilling device for installing an anchor rod according to claim 1, characterized in that: The blocking member (127) includes an arc-shaped connecting frame (1271) arranged between adjacent crushing knives (123), an arc-shaped baffle (1272) is fixedly connected to the inner side of the arc-shaped connecting frame (1271), the arc-shaped connecting frame (1271) and the arc-shaped baffle (1272) are both slidably connected to the top of the supporting seat (121), connecting grooves (1273) are provided at both ends of the arc-shaped connecting frame (1271), and a connecting hole (1274) is provided on the arc-shaped connecting frame (1271), and the connecting grooves (1273) provided at both ends of the arc-shaped connecting frame (1271) are connected through the connecting hole (1274).

8. The rock drilling device for installing an anchor rod according to claim 7, characterized in that: A second elastic member (1275) is provided in the connecting hole (1274), and connecting strips (1276) are fixedly connected to both ends of the second elastic member (1275). The connecting strip (1276) is slidably connected to the connecting groove (1273), and one end of the connecting strip (1276) extends out of the connecting groove (1273). The end of the connecting strip (1276) extending out of the connecting groove (1273) is fixedly connected to the crushing knife (123).

9. The rock drilling device for installing an anchor rod according to claim 1, characterized in that: The power unit (2) includes a stepper motor (21), the output end of the stepper motor (21) is detachably connected to the drill rod (11), the bottom of the stepper motor (21) is fixedly connected to a base (22), a slide rail (23) is provided at the bottom of the stepper motor (21), the base (22) is slidably connected to the slide rail (23), a bottom bracket (24) is fixedly connected to the slide rail (23), an electric telescopic rod (25) is fixedly connected to the inner wall of one side of the slide rail (23), and the output end of the electric telescopic rod (25) is fixedly connected to the base (22).

10. The rock drilling device for installing an anchor rod according to claim 1, characterized in that: The protection unit (3) includes a protection cover (31) slidably connected to the drill rod (11), a plurality of docking grooves (32) are vertically opened on the top of the inner wall of the protection cover (31), a third elastic member (33) is provided on the top of the protection cover (31), one end of the third elastic member (33) is fixedly connected to the protection cover (31), and the other end of the third elastic member (33) is in contact with the bottom support (24), and a plurality of second limiting rods (34) are fixedly connected to the top of the inner wall of the protection cover (31).

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