Rock drilling device for installing anchor rod

Abstract

The invention belongs to the technical field of rock stratum drilling, and provides a rock drilling device for mounting an anchor rod, which comprises a rock drilling unit for drilling a rock stratum, a power unit for driving the rock drilling unit to rotate and move, and a protection unit for preventing crushed rock from splashing to hurt people when the rock drilling unit drills the rock stratum; the bearing seat is rotated clockwise, so that the drill rod further moves along the inner wall of the bearing seat, one end of the drill rod is gradually attached to the adjusting block fixed to one side of the crushing cutter, the drill rod pushes the crushing cutter to gradually extend out of the containing groove through the adjusting block, and therefore the drilling hole diameter of the crushing cutter is adjusted; the device can be adjusted according to the hole diameter of a to-be-drilled hole, the application range of the device is expanded, the construction cost is reduced, and meanwhile an operator does not need to carry drill bits with different hole diameters to drill grouting holes with different hole diameters when installing an anchor rod.

Description

Technical Field

[0001] The present invention belongs to the technical field of rock drilling, and specifically relates to a rock drilling device for installing anchor bolts. Background Art

[0002] The rock drilling device can effectively drill grouting holes on the rock surface, facilitating the installation of anchor bolts, thereby strengthening the rock layer and reducing the probability of rock layer collapse.

[0003] The existing patent (Patent Publication No.: CN114320164B) discloses an adjustable drill bit for coal mine gas drainage boreholes and its usage method, which discloses an adjustable drill bit and its usage method that uses high-pressure water flow to ream the existing borehole under the existing borehole diameter without replacing the reaming drill bit, and can timely block the blowout hole through the provided sealing airbag. It is characterized by including a drilling assembly, a reaming assembly arranged on the drilling assembly, and a sealing assembly arranged on the drilling assembly. The reaming assembly sprays high-pressure water flow to ream the borehole drilled by the drilling assembly, and the sealing assembly can timely block the borehole when a blowout occurs.

[0004] Due to the different geological conditions of rock layers in each region, rocks can be divided into soft soil strata and hard rock strata. In soft soil strata, due to the poor stability of the strata, an overly large borehole diameter is likely to cause the collapse of the borehole wall. Therefore, the grouting hole diameter is relatively small. For example, in silty soft soil, the borehole diameter may be 30 - 40 mm.

[0005] Hard rock strata have high strength and can withstand boreholes with relatively large diameters. When grouting in hard rock strata, the borehole diameter can be adjusted according to specific grouting processes and requirements. If deep-hole grouting is carried out, the borehole diameter may be 50 - 100 mm or even larger to meet the requirements of injecting a large amount of slurry and spreading in rock fractures.

[0006] In strata with the same geology, different grouting materials also have different requirements for the borehole diameter. When using a relatively coarse-grained cement-sodium silicate double-fluid slurry, a larger borehole diameter is required, generally 50 - 80 mm, to ensure that the slurry can smoothly pass through the grouting hole without blockage; while if a chemical slurry (such as acrylate slurry) is used, due to its good fluidity, the borehole diameter can be relatively small, about 10 - 30 mm.

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

[0008] To solve the above technical problems, the present invention provides a rock drilling device for installing rock bolts, so as to solve the problems in the prior art that the process is relatively cumbersome and requires a large amount of manual participation, which affects the production efficiency.

[0009] A rock drilling device for installing rock bolts includes a rock drilling unit for drilling the rock formation, a power unit for driving the rock drilling unit to rotate and move, and a protection unit for preventing the broken rock from splashing and hurting people when the rock drilling unit drills the rock formation. Among them, the rock drilling unit includes a drill rod and a drill bit assembly. The power unit drives the drill bit assembly to drill the rock formation through the drill rod, and the protection 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 receiving grooves are vertically formed in the bearing seat. A crushing knife is arranged in the receiving groove. The top end of the crushing knife extends out of the receiving groove. Sliding grooves are horizontally formed on both inner walls of the receiving 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 receiving groove and is slidably connected to one end of the drill rod. A blocking member is arranged between adjacent crushing knives.

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

[0012] Preferably, the water delivery ring and the sewage discharge ring are respectively connected with a first annular water blocking plate and a second annular water blocking plate through bearings. A first rubber hose and a second rubber hose are respectively penetrated through the first annular water blocking plate and the second annular water blocking plate. The first rubber hose and the second rubber hose are respectively fixedly connected to the first annular water blocking plate and the second annular water blocking plate. The first rubber hose is communicated with the water delivery ring, and the second rubber hose is communicated with the sewage discharge ring.

[0013] Preferably, receiving holes are symmetrically and horizontally formed in the crushing knife. The symmetrically formed receiving holes are respectively located above and below the slider. A first elastic member is arranged in the receiving hole. Both ends of the first elastic member are fixedly connected with limiting blocks. The limiting blocks are slidably connected to the receiving hole. A first limiting rod is fixedly connected to the limiting block. One end of the first limiting rod extends out of the receiving hole.

[0014] Preferably, limiting grooves are symmetrically and horizontally formed on inner walls on both sides of the accommodation groove. 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. One end of the first limiting rod extending out of the accommodation hole is engaged with the limiting rack.

[0015] Preferably, a plurality of arc grooves are vertically formed in the bearing seat. The plurality of arc grooves are in one-to-one communication with the plurality of sliding grooves. Rotating shafts are symmetrically arranged in the arc grooves. The rotating shafts are connected to the inner wall of the arc groove through bearings. The symmetrically arranged rotating shafts are connected by a transmission belt. 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. Both the arc-shaped connecting frame and the arc-shaped baffle are slidably connected to the top of the bearing seat. Connecting grooves are formed at both ends of the arc-shaped connecting frame. A connecting hole is formed in the arc-shaped connecting frame. The connecting grooves formed at both ends of the arc-shaped connecting frame are communicated through the connecting hole.

[0017] Preferably, a second elastic member is arranged in the connecting hole. Connecting strips are fixedly connected to both ends of the second elastic member. The connecting strips are slidably connected to the connecting grooves. One end of the connecting strip extends out of the connecting groove. 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 stepping motor. The output end of the stepping motor is detachably connected to the drill rod. A base is fixedly connected to the bottom of the stepping motor. A slide rail is arranged at the bottom of the stepping 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 an inner wall on one side of the slide rail. The output end of the electric telescopic rod is fixedly connected to the base.

[0019] Preferably, the protection unit includes a protective cover slidably connected to the drill rod. A plurality of docking grooves are vertically formed at the top of the inner wall of the protective cover. A third elastic member is arranged at the top of the protective cover. One end of the third elastic member is fixedly connected to the protective cover. The other end of the third elastic member is in contact with the bottom support. A plurality of second limiting 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 further move the drill pipe along the inner wall of the bearing seat, so that one end of the drill pipe gradually fits with the adjusting block fixed on one side of the crushing tool, and the drill pipe pushes the crushing tool through the adjusting block to gradually extend out of the receiving groove, thereby adjusting the drilling aperture of the crushing tool, enabling the device to be adjusted according to the required drilling aperture, expanding the applicable range of the device, reducing the construction cost, and enabling the operator, when installing the anchor rod, not to carry drill bits of different aperture sizes to drill grouting holes of different apertures.

[0022] 2. The present invention drives the slider to move along the chute through the crushing tool, so that the slider drives the transmission belt to move along the rotating shafts symmetrically arranged in the arc groove. Since the aperture scale is set on the transmission belt, the operator can read the current drilling aperture of the crushing tool 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 actually required aperture.

[0023] 3. The present invention drives the first limiting rod to move along the limiting groove through the crushing tool. Under the action of the first elastic member, the first limiting rod continuously repeats the state of engaging and separating from the limiting rack, so that when the device reaches the required aperture, the first limiting rod engages with the limiting rack, thereby limiting the crushing tool, and further reducing the probability that the crushing tool deviates during the drilling process of the device, resulting in the drilled aperture not matching the actually required aperture.

[0024] 4. The present invention cooperates with the third elastic member and the bottom support to push the protective cover to always fit the rock surface, thereby reducing the probability that the broken rock splashes and injures people under the action of the centrifugal force of the drill bit assembly during the drilling of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0027] Figure 3 is the schematic diagram of the drill pipe structure of the present invention.

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

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

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

[0031] Figure 7 is the schematic diagram of the bearing seat structure 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 schematic structural diagram of the arc connecting frame of the present invention.

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

[0037] In the figure: 1, rock drilling unit; 11, drill pipe; 111, docking block; 112, water delivery hole; 113, sewage discharge hole; 114, water delivery pipe; 115, sewage discharge pipe; 116, water delivery 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, chute; 125, slider; 126, adjusting block; 127, blocking member; 1271, arc connecting frame; 1272, arc baffle; 1273, connecting groove; 1274, connecting hole; 1275, second elastic member; 1276, connecting strip; 128, receiving 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. Specific Embodiments

[0038] The following further describes in detail the embodiments of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0039] The present invention provides a rock drilling device for installing rock bolts, which includes a rock drilling unit 1 for drilling into the rock formation, a power unit 2 for driving the rock drilling unit 1 to rotate and move, and a protection unit 3 for preventing rock fragments from splashing and injuring people when the rock drilling unit 1 drills into the rock formation. Among them, the rock drilling unit 1 includes a drill pipe 11 and a drill bit assembly 12. The power unit 2 drives the drill bit assembly 12 to drill into the rock formation through the drill pipe 11. The protection unit 3 is slidably connected to the drill pipe 11. The drill bit assembly 12 includes a bearing seat 121 that is threadedly connected to one end of the drill pipe 11 and bears the components in the drill bit assembly 12. A plurality of receiving grooves 122 for receiving the components in the drill bit assembly 12 are vertically formed in the bearing seat 121. A crushing knife 123 for crushing the rock formation is arranged in the receiving groove 122. The top end of the crushing knife 123 extends out of the receiving groove 122. Sliding grooves 124 for limiting the crushing knife 123 are horizontally formed on both inner walls of the receiving groove 122. A slider 125 for limiting the crushing knife 123 is slidably connected in the sliding groove 124. The slider 125 is fixedly connected to the crushing knife 123. An adjusting block 126 for adjusting the distance that the crushing knife 123 extends out of the receiving groove 122 is fixedly connected to one side of the crushing knife 123. The adjusting block 126 extends out of the receiving groove 122 and is slidably connected to one end of the drill pipe 11. A blocking member 127 for preventing sewage from leaking out of the grouting hole during drilling is arranged between adjacent crushing knives 123.

[0040] It should be noted that: as Figure 5 and Figure 6 shown, the number of the receiving grooves 122, the number of the crushing knives 123 and the number of the blocking members 127 are equal, and the receiving grooves 122 are evenly distributed on the bearing seat 121.

[0041] It should be noted that: one, two or multiple crushing knives 123 can be provided. The more the number of the crushing knives 123, the higher the drilling efficiency, and the corresponding cost is also higher. Figure 1 、 Figure 2 、 Figure 5 and Figure 6 only take four as an example.

[0042] A plurality of docking blocks 111 for limiting the protection unit 3 are fixedly connected to the drill pipe 11. One end of the drill pipe 11 is provided with a water delivery hole 112 for delivering water to the crushing knife 123 and a sewage discharge hole 113 for discharging the mixture of crushed stones, soil and dust generated during the drilling process of the crushing knife 123 and water. A water delivery pipe 114 for delivering water and a sewage discharge pipe 115 for delivering sewage are horizontally penetrated through the drill pipe 11. The water delivery pipe 114 and the sewage discharge pipe 115 are both fixedly connected to the drill pipe 11. A water delivery ring 116 for water transfer and a sewage discharge ring 117 for sewage transfer are fixedly connected to the drill pipe 11. The water delivery pipe 114 is communicated with the water delivery ring 116, and the sewage discharge pipe 115 is communicated with the sewage discharge ring 117; the water delivery ring 116 and the sewage discharge ring 117 are respectively connected by bearings with a first annular water blocking plate 118 for preventing water from flowing out of the water delivery ring 116 resulting in resource waste and a second annular water blocking plate 119 for preventing sewage from flowing out of the sewage discharge ring 117 to pollute the environment. A first rubber hose 1110 for connecting a water pump to supply water to the device and a second rubber hose 1111 for connecting a suction device are respectively penetrated 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 is communicated with the water delivery ring 116, and the second rubber hose 1111 is communicated with the sewage discharge ring 117.

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

[0044] Receiving holes 128 for receiving are symmetrically and horizontally opened on the crushing knife 123. The symmetrically opened receiving holes 128 are respectively located above and below the slider 125. A first elastic member 129 capable of elastic deformation is arranged in the receiving hole 128. Both ends of the first elastic member 129 are fixedly connected with limit blocks 1210 that move along the receiving hole 128. The limit blocks 1210 are slidably connected with the receiving hole 128. A first limit rod 1211 for limiting the crushing knife 123 is fixedly connected to the limit block 1210. One end of the first limit rod 1211 extends out of the receiving hole 128; on both inner walls of the receiving groove 122, limit grooves 1212 for receiving the end of the first limit rod 1211 extending out of the receiving hole 128 are symmetrically and horizontally opened. The symmetrically arranged limit grooves 1212 are respectively located above and below the sliding groove 124. A limit rack 1213 that cooperates with the first limit rod 1211 to limit the crushing knife 123 is fixedly connected to the inner wall of the limit groove 1212. The end of the first limit rod 1211 extending out of the receiving hole 128 meshes with the limit rack 1213.

[0045] The bearing seat 121 is vertically provided with a plurality of arc-shaped grooves 1214 for accommodation. The plurality of arc-shaped grooves 1214 are in one-to-one communication with the plurality of sliding grooves 124. Rotating shafts 1215 for assisting in movement are symmetrically arranged in the arc-shaped grooves 1214. The rotating shafts 1215 are connected to the inner walls of the arc-shaped grooves 1214 through bearings. The symmetrically arranged rotating shafts 1215 are connected by a transmission belt 1216. 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 scales of aperture sizes. As Figure 9 shown, the operator can read the aperture of the current drilling of the cutting tool 123 according to the exposed part of the transmission belt 1216.

[0047] It should be noted that: The material of the transmission belt 1216 is preferably steel that is not prone to deformation.

[0048] The blocking member 127 includes an arc-shaped connecting frame 1271 disposed between adjacent cutting tools 123 for blocking sewage generated during drilling. An arc-shaped baffle 1272 for preventing sewage leakage is fixedly connected to the inner side of the arc-shaped connecting frame 1271. Both the arc-shaped connecting frame 1271 and the arc-shaped baffle 1272 are slidably connected to the top of the bearing seat 121. Connecting grooves 1273 for accommodation are opened at both ends of the arc-shaped connecting frame 1271. A connecting hole 1274 for accommodation is opened on the arc-shaped connecting frame 1271. The connecting grooves 1273 opened at both ends of the arc-shaped connecting frame 1271 are communicated through the connecting hole 1274; A second elastic member 1275 capable of elastic deformation is arranged in the connecting hole 1274. Connecting bars 1276 for blocking sewage generated during drilling are fixedly connected to both ends of the second elastic member 1275. The connecting bars 1276 are slidably connected to the connecting grooves 1273, and one end of the connecting bar 1276 extends out of the connecting groove 1273. The end of the connecting bar 1276 extending out of the connecting groove 1273 is fixedly connected to the cutting tool 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. A base 22 for carrying and fixing the stepper motor 21 is fixedly connected to the bottom of the stepper motor 21. A slide rail 23 for limiting the base 22 is arranged at the bottom of the stepper motor 21. The base 22 is slidably connected to the slide rail 23. A bottom support 24 for limiting the protection unit 3 and supporting the drill rod 11 is fixedly connected to the slide rail 23. An electric telescopic rod 25 for driving the stepper motor 21 to move along the slide rail 23 is fixedly connected to an 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 stepper 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 mechanical arm capable of adjusting the drilling angle at the bottom of the slide rail 23 .

[0052] The protection unit 3 includes a protection cover 31 which is slidably connected to the drill rod 11 to prevent the 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 which cooperate with the docking block 111 to limit the protection cover 31 are vertically opened on the top of the inner wall of the protection cover 31. A third elastic member 33 which limits the protection cover 31 is arranged 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 fitted with the bottom support 24. A plurality of second limiting rods 34 are fixedly connected to the top of the inner wall of the protection 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] Embodiment 1: Figures 1 - 12 As shown, in this embodiment, when adjustment is required according to the borehole diameter, firstly, since the drill rod 11 is connected to the bearing seat 121 by a threaded connection, the bearing seat 121 is rotated clockwise so that the drill rod 11 further moves along the inner wall of the bearing seat 121, and then one end of the drill rod 11 is gradually fitted 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, so that the device can be adjusted according to the required borehole diameter, expanding the application range 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 does not extend out of the receiving groove 122, the initial drilling aperture of the device is 30 mm, and when the crushing knife 123 extends to the limit out of the receiving groove 122, the drilling aperture of the device is 50 mm. Thus, the drilling diameter of the device can meet the requirements for drilling in soft soil strata and hard rock strata, and at the same time, it can also meet the requirements of different grouting materials for the drilling diameter.

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

[0058] During the process of the crushing knife 123 gradually extending out of the receiving groove 122, the crushing knife 123 drives the slider 125 to move along the sliding groove 124. Thus, the slider 125 drives the transmission belt 1216 to move along the rotating shafts 1215 symmetrically arranged in the arc - shaped groove 1214. Since the transmission belt 1216 is provided with aperture scales, the operator can read the current drilling aperture of 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 actually required aperture.

[0059] During the process of the crushing knife 123 gradually extending out of the receiving 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 continuously repeats the state of engaging and separating from 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 and further reducing the probability that the crushing knife 123 deflects during the drilling process of the device, resulting in the drilled aperture not matching the actually required aperture.

[0060] It should be noted that during the process of the first limiting rod 1211 engaging with and separating from and then engaging with the limiting rack 1213, the actual distance that the crushing knife 123 moves along the limiting groove 1212 is 1 mm.

[0061] After the device is adjusted according to the actual required aperture, a device with an adjustable drilling angle, such as a robotic arm, can be installed at the bottom of the slide rail 23 to adjust the drilling angle of the device. After the drilling angle is adjusted, start the power device that can drive the drill rod 11 to rotate counterclockwise, so that the drill rod 11 drives the drill bit assembly 12 to rotate. Then start the pushing device that can push the power device to move along the slide rail 23, so that the device drills into the rock formation.

[0062] During the process of drilling into the rock formation, under the action of the third elastic member 33 and the bottom support 24, the protective cover 31 always fits the rock surface, thereby reducing the probability of rock splashing and injuring people caused by the broken rock during drilling under the action of the centrifugal force of the drill bit assembly 12.

[0063] When the device drills to the required depth, unlock the power device and the drill rod 11. The operator can insert the anchor rod into the grouting hole through the hollow part of the drill rod 11, so that each part of the anchor rod is located at the center of the grouting hole, reducing the probability of uneven stress on the anchor rod after grouting.

[0064] When the front end of the anchor rod reaches the deepest part of the drilling hole, pull the drill rod 11 and the drill bit assembly 12 out of the grouting hole through the dragging device to complete the installation of the anchor rod.

[0065] The embodiments of the present invention are given 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 should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A rock drilling device for installing rock bolts, comprising: A rock drilling unit (1) for drilling into a rock formation, a power unit (2) for driving the rock drilling unit (1) to rotate and move, and a protection unit (3) for preventing rock fragments from splashing and injuring people when the rock drilling unit (1) drills into the rock formation. It is characterized in that the rock drilling unit (1) includes a drill pipe (11) and a drill bit assembly (12), the power unit (2) drives the drill bit assembly (12) to drill into the rock formation through the drill pipe (11), and the protection unit (3) is slidably connected to the drill pipe (11); The drill bit assembly (12) includes a bearing seat (121) threadedly connected to one end of the drill pipe (11). A plurality of receiving grooves (122) are vertically formed in the bearing seat (121). A crushing knife (123) is disposed in the receiving groove (122). The top end of the crushing knife (123) extends out of the receiving groove (122). Sliding grooves (124) are horizontally formed on both inner walls 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 pipe (11). A blocking member (127) is disposed between adjacent crushing knives (123).

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

3. The rock drilling device for installing rock bolts according to claim 2, characterized in that: The water delivery ring (116) and the sewage discharge ring (117) are respectively connected with a first annular water blocking plate (118) and a second annular water blocking plate (119) through bearings. A first rubber hose (1110) and a second rubber hose (1111) are respectively penetrated 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) is communicated with the water delivery ring (116), and the second rubber hose (1111) is communicated with the sewage discharge ring (117).

4. The rock drilling device for installing rock bolts as claimed in claim 1, characterized in that: The crushing knife (123) is symmetrically and horizontally provided with receiving holes (128). The symmetrically arranged receiving holes (128) are respectively located above and below the slider (125). A first elastic member (129) is arranged in the receiving hole (128). Both ends of the first elastic member (129) are fixedly connected with limit blocks (1210). The limit blocks (1210) are slidably connected with the receiving hole (128). A first limit rod (1211) is fixedly connected to the limit block (1210). One end of the first limit rod (1211) extends out of the receiving hole (128).

5. The rock drilling device for installing rock bolts according to claim 4, characterized in that: On both inner walls of the receiving groove (122), limit grooves (1212) are symmetrically and horizontally arranged. The symmetrically arranged limit grooves (1212) are respectively located above and below the sliding groove (124). A limit rack (1213) is fixedly connected to the inner wall of the limit groove (1212). One end of the first limit rod (1211) extending out of the receiving hole (128) is engaged with the limit rack (1213).

6. The rock drilling device for installing anchor bolts according to claim 1, characterized in that: A plurality of arc grooves (1214) are vertically arranged on the bearing seat (121). The plurality of arc grooves (1214) are in one-to-one communication with the plurality of sliding grooves (124). Rotating shafts (1215) are symmetrically arranged in the arc grooves (1214). The rotating shafts (1215) are connected to the inner walls of the arc grooves (1214) through bearings. The symmetrically arranged rotating shafts (1215) are connected by a transmission belt (1216). The slider (125) is fixedly connected to the transmission belt (1216).

7. The rock drilling device for installing anchor bolts 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). Both the arc-shaped connecting frame (1271) and the arc-shaped baffle (1272) are slidably connected to the top of the bearing seat (121). Connecting grooves (1273) are respectively arranged at both ends of the arc-shaped connecting frame (1271). A connecting hole (1274) is arranged on the arc-shaped connecting frame (1271). The connecting grooves (1273) arranged at both ends of the arc-shaped connecting frame (1271) are communicated through the connecting hole (1274).

8. The rock drilling device for installing anchor bolts according to claim 7, characterized in that: A second elastic member (1275) is arranged in the connecting hole (1274). Both ends of the second elastic member (1275) are fixedly connected with connecting strips (1276). The connecting strips (1276) are slidably connected with the connecting grooves (1273). One end of the connecting strip (1276) extends out of the connecting groove (1273). One 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 anchor bolts 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 pipe (11), a base (22) is fixedly connected to the bottom of the stepper motor (21), a slide rail (23) is arranged at the bottom of the stepper motor (21), the base (22) is slidably connected to the slide rail (23), a bottom support (24) is fixedly connected to the slide rail (23), an electric telescopic rod (25) is fixedly connected to one inner wall 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 anchor bolts according to claim 1, characterized in that: The protection unit (3) includes a protective cover (31) slidably connected to the drill pipe (11), a plurality of docking grooves (32) are vertically formed at the top of the inner wall of the protective cover (31), a third elastic member (33) is arranged at the top of the protective cover (31), one end of the third elastic member (33) is fixedly connected to the protective cover (31), 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 protective cover (31).

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