Gravity impact type rock drilling device

Abstract

The invention discloses a gravity impact type rock drilling device, and relates to the technical field of rock and soil digging equipment. The supporting structure frame is fixedly installed in an inclined shaft section in a working state, and a vertical channel for an impact hammer to move is formed in the middle of the supporting structure frame; the cutter disc is elastically suspended at the lower end of the supporting structure frame, and a plurality of drill cutters are distributed on the circumference of the lower end face; the impact hammer is used for hammering the cutter disc; the crane is installed on the supporting structure frame and used for hoisting the impact hammer and releasing the impact hammer at the set height. According to the gravity impact type rock drilling device, after the slag sliding well of the inclined shaft is constructed, the supporting structure frame is installed in the starting section of the inclined shaft, the cutter disc abuts against the tunnel face, then the impact hammer is lifted by the set height through the crane and released, the cutter disc is hammered through the impact hammer for rock drilling, drilling and blasting are not needed, and the construction efficiency is improved. The device has the characteristics of high safety, low manual labor intensity and high construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of rock and soil excavation equipment, and in particular to a gravity impact rock drilling device. Background Art

[0002] Inclined shaft (also called inclined shaft or inclined tunnel) refers to a shaft used for vertical or inclined transportation, ventilation, drainage and other operations in the fields of mining, underground engineering construction, etc., and the inclination of the shaft wall is usually at a certain angle to the horizontal line. For the excavation of inclined shafts, the main methods used in the existing technology are: drilling and blasting method, straight shaft construction, after the reverse pull forms a slag shaft (about 2.4m in diameter), the manual drilling and blasting method is used for construction, which requires a lot of manpower, a long time, high labor intensity, poor safety, and low work efficiency; TBM method, reverse shaft construction, that is, construction from bottom to top, although the construction efficiency is high, the TBM machine is tens of meters or hundreds of meters long and weighs more than 1,000 tons. The equipment has a large weight, a large appearance, and a high cost. In addition, the general inclined shaft length (less than 900m) is less than the minimum construction length of TBM (1000m), so the economic efficiency of inclined shaft excavation using TBM is poor.

[0003] That is to say, in the prior art, TBM is not suitable for digging inclined shafts, and conventional drilling and blasting methods are used for digging, which has high labor intensity, poor safety and low efficiency. Summary of the invention

[0004] In view of the technical problems of high labor intensity, poor safety and low efficiency in the existing inclined shaft excavation using conventional drilling and blasting methods, the present invention provides a gravity impact rock drilling device, which uses a crane to lift an impact hammer, and uses the impact hammer to impact the drill bit to drill the rock, without the need for drilling and blasting, and has the characteristics of high safety, low labor intensity and high construction efficiency.

[0005] The present invention is achieved through the following technical solutions:

[0006] The present invention provides a gravity impact rock drilling device, comprising: a support structure frame, which is installed and fixed in an inclined shaft section in a working state, and a vertical channel for an impact hammer to move is arranged in the middle; a tool disc, which is elastically suspended at the lower end of the support structure frame, and a plurality of drill cutters are distributed circumferentially on the lower end surface; an impact hammer, which is used to hammer the tool disc; and a crane, which is installed on the support structure frame, is used to hoist the impact hammer and can release the impact hammer at a set height.

[0007] The gravity impact rock drilling device provided by the present invention comprises a support structure frame, a tool disc, an impact hammer and a crane. A vertical channel for the impact hammer to move is arranged in the middle of the support structure frame. The tool disc is elastically suspended at the lower end of the support structure frame. The crane is installed on the support structure frame. After the construction of the slag chute of the inclined shaft is completed, the support structure frame is installed in the starting section of the inclined shaft so that the tool disc contacts the face. Then the impact hammer is lifted to a set height and released by the crane, so that the impact hammer can hammer the tool disc to drill the rock without drilling and blasting. The device has the characteristics of high safety, low labor intensity and high construction efficiency. Since the tool disc is elastically suspended at the lower end of the support structure frame, after the impact hammer hammers the tool disc, the tool disc can automatically rebound, which is convenient for the hammering of the next stroke.

[0008] Among them, the gravity impact rock drilling device provided by the present invention uses a crane to lift the impact hammer, with low lifting power, large impact gravity potential energy, and low energy consumption; at the same time, the impact hammer is used to impact the drill bit for rock drilling, with a high degree of automation and less manual intervention in the rock drilling process; and the supporting structure frame can be used as an integrated platform for excavation in the hole, and an automatic support system for drilling, rod insertion and grouting can be installed on the supporting structure frame to achieve multiple uses of one machine.

[0009] In an optional embodiment of the present application, the support structure frame has a plurality of support shoes in a circumferential array, and a tightening cylinder is provided between the support shoes and the main body of the support structure frame. The action force of the tightening cylinder is between the support shoes and the main body of the support structure frame, so that the support shoes are pressed against the side walls of the inclined shaft through the extension of the tightening cylinder, thereby fixing the support structure frame. There is no need to install rails, the installation cost is low, the installation period is short, and it is convenient to move the support structure frame and change the installation position.

[0010] In an optional embodiment of the present application, an adjustment slide rail is provided at the upper end of the support structure frame, and the adjustment slide rail extends radially along the support structure frame; the crane is installed on the adjustment slide rail, and the position of the crane on the adjustment slide rail is variable, so as to adjust the lifting position of the crane and ensure that the impact hammer released by the crane can hammer the set position on the tool disc.

[0011] In an optional embodiment of the present application, an elastic suspension mechanism is further included, and the elastic suspension mechanism is used to connect the support structure frame and the tool disc to elastically suspend the tool disc at the lower end of the support structure frame.

[0012] In an optional embodiment of the present application, the elastic suspension mechanism includes a plurality of elastic suspension components, and the elastic suspension components include: a connecting bolt for connecting the support structure frame and the tool disc; a ball head bolt, the end of which is slidably arranged at the lower end of the support structure frame; an upper baffle plate, slidably sleeved outside the rod section of the ball head bolt and abutting against the lower end of the tool disc structure; a lower baffle plate, fixed to the lower end of the ball head bolt; a suspension spring, sleeved outside the rod section of the ball head bolt and located between the upper baffle plate and the lower baffle plate, so as to ensure that the elastic suspension mechanism can elastically suspend the tool disc at the lower end of the support structure frame.

[0013] In an optional embodiment of the present application, a slag cleaning mechanism is further included, and the slag cleaning mechanism can remove slag after the impact hammer strikes the tool disc, so as to facilitate the rapid removal of chiseled gravel.

[0014] In an optional embodiment of the present application, the slag cleaning mechanism includes: a ratchet fixed on the upper end surface of the tool disc and coaxially arranged with the tool disc; a pawl adapted to the ratchet; a slag cleaning cylinder, one end of which is transmission-connected to the pawl and the other end is hinged to the support structure frame, and is adapted to be equipped with a reset spring for driving the pawl to drive the ratchet to rotate and drive the pawl to reset; a slag cleaning hammer, which is elastically mounted on the impact hammer and can pressurize the slag cleaning cylinder after the impact hammer strikes the tool disc, so as to ensure that after the impact hammer strikes the tool disc, the tool disc can be driven to rotate for slag removal.

[0015] In an optional embodiment of the present application, the slag cleaning hammer is movably sleeved outside the impact hammer, and the slag cleaning hammer can limit the impact hammer; the slag cleaning hammer is provided with a connecting lifting lug, and the connecting lifting lug is connected to the crane through a unhooking device; a connecting spring is provided between the slag cleaning hammer and the impact hammer, and the action force of the connecting spring is between the top of the inner cavity of the slag cleaning hammer and the upper end of the impact hammer; the slag cleaning mechanism also includes a pressurized oil cylinder, which is vertically arranged, and the upper end of the piston rod of the pressurized oil cylinder extends out of the cylinder body and is located on the moving path of the slag cleaning hammer, and the oil outlet end of the pressurized oil cylinder is connected to the oil pressure chamber of the slag cleaning oil cylinder to ensure that after each impact hammer hits the tool disc, the tool disc can rotate by itself without the need for additional control, thereby ensuring the slag cleaning effect.

[0016] In an optional embodiment of the present application, an energy accumulator is connected between the pressurizing cylinder and the slag cleaning cylinder so that the energy accumulator can absorb excess impact of the slag cleaning hammer and drive the tool disc to continue rotating during the re-hoisting of the slag cleaning hammer.

[0017] In an optional embodiment of the present application, the slag cleaning mechanism also includes a slag cleaning support arm, one end of the slag cleaning support arm is hinged to the piston rod of the slag cleaning cylinder, the other end is fixedly connected to the pawl, and the middle part is hinged to the supporting structure frame, to ensure that the slag cleaning cylinder can drive the pawl to drive the ratchet wheel to rotate and drive the pawl to reset.

[0018] In an optional embodiment of the present application, the blade of the chisel is a saddle-shaped structure with a triangular edge angle, so as to ensure that the chisel has sufficient sharpness while having sufficient impact resistance and structural strength.

[0019] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0020] 1. The gravity impact rock drilling device provided by the present invention comprises a support structure frame, a cutter disc, an impact hammer and a crane. A vertical channel for the impact hammer to move is arranged in the middle of the support structure frame. The cutter disc is elastically suspended at the lower end of the support structure frame. The crane is installed on the support structure frame. After the construction of the slag chute of the inclined shaft is completed, the support structure frame is installed in the starting section of the inclined shaft so that the cutter disc contacts the face. Then the impact hammer is lifted to a set height by the crane and released, so that the cutter disc is hammered by the impact hammer to perform rock drilling. No drilling and blasting is required. The device has the characteristics of high safety, low labor intensity and high construction efficiency.

[0021] 2. The gravity impact rock drilling device provided by the present invention uses a crane to lift the impact hammer, which has low lifting power, large impact gravity potential energy, and low energy consumption.

[0022] 3. The gravity impact rock drilling device provided by the present invention utilizes an impact hammer to impact a drill bit for rock drilling, has a high degree of automation, and requires little human intervention during the rock drilling process.

[0023] 4. The gravity impact rock drilling device provided by the present invention has a support structure frame that can be used as an integrated platform for excavation in a hole, and an automatic support system for drilling, rod insertion and grouting can be installed on the support structure frame to achieve multiple uses of one machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0025] In the attached picture:

[0026] Figure 1 It is a structural schematic diagram of a gravity impact rock drilling device according to an embodiment of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the gravity impact rock drilling device according to an embodiment of the present invention from a bottom view;

[0028] Figure 3 It is a structural schematic diagram of a suspension assembly according to an embodiment of the present invention;

[0029] Figure 4 This is a schematic structural diagram of a hammer assembly according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the slag cleaning cylinder driving the pawl to reset in an embodiment of the present invention;

[0031] Figure 6 For the embodiment of the present invention Figure 5 A-direction structural schematic diagram;

[0032] Figure 7 This is a schematic diagram of the structure of the slag cleaning mechanism of the embodiment of the present invention when it is working;

[0033] Figure 8 It is a schematic structural diagram of the rotary slag removal of the cutter head according to an embodiment of the present invention;

[0034] Fig. 9 It is a schematic diagram of the working state of the gravity impact rock drilling device according to an embodiment of the present invention.

[0035] Marks and corresponding parts names in the attached drawings:

[0036] 10-support structure frame, 11-holding shoe, 12-holding cylinder, 13-adjusting slide rail, 14-fixing cylinder, 20-tool disc, 21-drilling tool, 22-force pier, 30-impact hammer, 40-crane, 50-elastic suspension mechanism, 51-connecting bolt, 52-ball bolt, 53-upper baffle, 54-lower baffle, 55-suspension spring, 60-slag cleaning mechanism, 61-ratchet, 62-pawl, 63-slag cleaning cylinder, 64-reset spring, 65-slag cleaning hammer, 66-connecting spring, 67-pressurized cylinder, 68-energy accumulator, 69-slag cleaning support arm. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0038] In the description of the embodiments of the present application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or is the orientation or positional relationship in which the device of the application is usually placed when in use, or is the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. At the same time, the terms "set", "install", "connect", and "connect" should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example

[0040] Combination Figure 1 The present embodiment provides a gravity impact rock drilling device, comprising: a support structure frame 10, which is installed and fixed in the inclined shaft section in the working state, and a vertical channel for the impact hammer 30 to move is arranged in the middle; a tool disc 20, which is elastically suspended at the lower end of the support structure frame 10, and a plurality of drill cutters 21 are distributed circumferentially on the lower end surface; an impact hammer 30, which is used to hammer the tool disc 20; and a crane 40, which is installed on the support structure frame 10, and is used to lift the impact hammer 30 and can release the impact hammer 30 at a set height.

[0041] Specifically, the support structure frame 10 is a steel welded structure, and a plurality of support shoes 11 are arranged in a circumferential array on the support structure frame 10. A tightening cylinder 12 is arranged between the support shoe 11 and the main body of the support structure frame 10. The action force of the tightening cylinder 12 is between the support shoe 11 and the main body of the support structure frame 10, so that the support shoe 11 is pressed against the side wall of the inclined shaft through the extension of the tightening cylinder 12, thereby fixing the support structure frame 10. There is no need to install rails, the installation cost is low, the installation period is short, and it is convenient to move the support structure frame 10 and change the installation position.

[0042] Meanwhile, an adjustment rail 13 is provided at the upper end of the support structure frame 10, and the adjustment rail 13 extends radially along the support structure frame; the crane 40 is mounted on the adjustment rail 13, and the position of the crane 40 on the adjustment rail 13 is variable, so as to adjust the lifting position of the crane 40 and ensure that the impact hammer 30 released by the crane 40 can hammer the set position on the tool disc 20. The crane 40 can be a conventional winch, an electric hoist, or a commonly used linear lifting mechanism, such as a sprocket mechanism driven by a hydraulic cylinder.

[0043] In order to facilitate the installation of the tool disc 20, a fixing cylinder is installed at the lower end of the support structure frame 10, and the fixing cylinder is welded, bolted, or pinned to the support structure frame 10, and the adjustment slide rod is extended to the upper side of the axis of the fixing cylinder. An ultrasonic detection system can be installed on the support structure frame 10 to timely detect the stability of the rock mass in the well, so as to facilitate the timely anchoring or spraying of anchors to ensure construction safety.

[0044] Similarly, the tool disc 20 is also formed by welding steel, and a force-bearing pier is provided in the middle of the upper end surface of the tool disc 20 to receive the impact of the impact hammer 30 through the force-bearing pier, thereby improving the service life of the tool disc 20.

[0045] Combination Figure 2 , multiple drill cutters 21 are evenly distributed along the circumference of the lower end surface of the tool disc 20, that is, multiple drill cutters 21 are arranged at equal angles. The number of drill cutters 21 is usually 6 or 8, and of course it can be other numbers, such as 10, which is determined according to the size of the inclined well hole diameter to ensure rock drilling efficiency. In this embodiment, one end of the drill cutter 21 is welded together, and the other end is welded to the top plate of the lower end surface of the tool disc 20. The blade is a saddle-shaped structure with a triangular blade angle, which is forged from high-strength wear-resistant alloy steel, that is, the blade of the drill cutter 21 is a saddle-shaped structure with a triangular blade angle to ensure that the drill has sufficient sharpness and sufficient impact resistance and structural strength.

[0046] There is a certain angle between the multiple chisels 21 and the horizontal surface, and the angle is for the convenience of discharging. Meanwhile, the reels of cables, water and gas pipelines are arranged in the upper horizontal hole, which are driven by a motor and used to pull (upward or downward) cables, gas pipes and water pipes to the equipment.

[0047] It is understandable that the present embodiment further includes an elastic suspension mechanism 50, and the elastic suspension mechanism 50 is used to connect the support structure frame 10 and the tool disc 20, so as to elastically suspend the tool disc 20 at the lower end of the support structure frame 10. That is, the tool disc 20 is connected to the lower end of the fixed cylinder through the elastic suspension mechanism 50.

[0048] Combination Figure 3 The elastic suspension mechanism 50 includes a plurality of elastic suspension components, and the elastic suspension components include: a connecting bolt 51, used to connect the support structure frame 10 and the tool disc 20; a ball stud 52, the end of which is slidably arranged at the lower end of the support structure frame 10; an upper baffle 53, which is slidably sleeved outside the rod section of the ball stud 52 and abuts against the lower end of the tool disc 20 structure; a lower baffle 54, which is fixed to the lower end of the ball stud 52; a suspension spring 55, which is sleeved outside the rod section of the ball stud 52 and is located between the upper baffle 53 and the lower baffle 54, so as to ensure that the elastic suspension mechanism 50 can elastically suspend the tool disc 20 at the lower end of the support structure frame 10.

[0049] On this basis, the present embodiment further includes a slag removal mechanism 60, which can remove slag after the impact hammer 30 strikes the tool disc 20, so as to quickly remove the chiseled gravel. The slag removal mechanism 60 can be a pneumatic slag removal mechanism, or a pressure water flushing mechanism.

[0050] Combination Figure 4 and Figure 5 In this embodiment, the slag cleaning mechanism 60 includes: a ratchet 61, which is fixed on the upper end surface of the tool disc 20 and is coaxially arranged with the tool disc 20; a pawl 62, which is adapted to the ratchet 61; a slag cleaning cylinder 63, one end of which is transmission-connected to the pawl 62 and the other end is hinged to the support structure frame 10, and is adapted to be equipped with a reset spring 64 for driving the pawl 62 to drive the ratchet 61 to rotate and drive the pawl 62 to reset; a slag cleaning hammer 65, which is elastically mounted on the impact hammer 30 and can pressurize the slag cleaning cylinder 63 after the impact hammer 30 hammers the tool disc 20, so as to ensure that after the impact hammer 30 hammers the tool disc 20, the tool disc 20 can be driven to rotate for slag removal.

[0051] It should be understood that the slag cleaning oil cylinder 63 includes a slag cleaning cylinder body, a slag cleaning piston is adapted in the slag cleaning cylinder body, a slag cleaning piston rod is fixedly connected to the slag cleaning piston, and the other end of the slag cleaning piston rod is drivingly connected to the pawl 62. At the same time, the slag cleaning piston divides the inner cavity of the slag cleaning cylinder body into a slag cleaning oil pressure cavity and a spring installation cavity, the slag cleaning piston rod is inserted in the spring installation cavity, and a reset spring 64 is installed in the spring installation cavity.

[0052] Continue to combine Figure 4 and Figure 5 The slag cleaning hammer 65 is movably sleeved outside the impact hammer 30, and the slag cleaning hammer 65 can limit the impact hammer 30; the slag cleaning hammer 65 is provided with a connecting lifting lug, and the connecting lifting lug is connected to the crane 40 through a decoupling device; a connecting spring 66 is provided between the slag cleaning hammer 65 and the impact hammer 30, and the action force of the connecting spring 66 is between the top of the inner cavity of the slag cleaning hammer 65 and the upper end of the impact hammer 30; the slag cleaning mechanism 60 also includes a pressurized oil cylinder 67, which is vertically arranged, and the upper end of the piston rod of the pressurized oil cylinder 67 extends out of the cylinder body and is located on the moving path of the slag cleaning hammer 65, and the oil outlet end of the pressurized oil cylinder 67 is connected to the oil pressure chamber of the slag cleaning oil cylinder 63 to ensure that after each impact hammer 30 hammers the tool disc 20, the tool disc 20 can rotate by itself without the need for additional control, thereby ensuring the slag cleaning effect.

[0053] Specifically, the pressurizing cylinder 67 includes a pressurizing cylinder body, in which a pressurizing piston is adapted, and the pressurizing piston is fixedly connected to a pressurizing piston rod, and the other end of the pressurizing piston rod extends to the falling path of the slag cleaning hammer 65. At the same time, the pressurizing piston can press the hydraulic oil in the pressurizing cylinder body cavity into the slag cleaning oil pressure cavity of the slag cleaning cylinder 63, thereby driving the slag cleaning piston rod to move.

[0054] Generally speaking, an accumulator 68 is connected between the pressurizing cylinder 67 and the slag cleaning cylinder 63 so as to absorb the excess impact of the slag cleaning hammer 65 through the accumulator 68 and drive the tool disc 20 to continue rotating during the process of the slag cleaning hammer 65 being lifted back.

[0055] Combination Figure 6 The slag cleaning mechanism 60 also includes a slag cleaning arm 69, one end of which is hinged to the piston rod of the slag cleaning cylinder 63, the other end is fixedly connected to the pawl 62, and the middle part is hinged to the supporting structure frame 10, to ensure that the slag cleaning cylinder 63 can drive the pawl 62 to drive the ratchet 61 to rotate and drive the pawl 62 to reset. Among them, the pawl 62 is fixedly connected to the slag cleaning arm 69 through a transmission shaft, and the transmission shaft is movably penetrated on the bottom plate of the fixed cylinder to drive the transmission shaft to rotate through the rotation of the slag cleaning arm 69, and then drive the ratchet 61 to rotate. Specifically, when the piston rod of the slag cleaning cylinder 63 is extended, the slag cleaning arm 69 is driven to rotate to the right (based on Figure 5 ), so that the slag cleaning cylinder 63, the hinged end of the ratchet 62 and the slag cleaning arm 69 move downward and rotate rightward, so that the end of the ratchet 62 abutting against the ratchet 61 is driven by the slag cleaning cylinder 63 to rotate clockwise around the axis of the ratchet 61 (based on Figure 5 ) until it turns to Figure 7 The ratchet wheel 61 then drives the tool disc 20 to rotate to a set angle.

[0056] In addition, combined Fig. 9 In order to facilitate the transportation of personnel and materials during the excavation process of this embodiment, a high-speed winch / hoist and a transport vehicle are arranged in the upper level tunnel. The transport vehicle mainly transports maintenance personnel up and down, materials up and down, or small tools. The load capacity is about 2t, and the running speed meets the requirements of personnel escape. The P series light rail is used for the transport vehicle running track, or the rubber tire wheel structure is directly used without installing the rail.

[0057] The gravity impact rock drilling device provided in this embodiment is adapted to be equipped with an electrical control component, which is usually integrated in an electrical room and remotely operated. The cable is unwound through a cable reel, and compressed air is delivered to the front tool disc 20 through a pipeline laid from top to bottom.

[0058] In summary, the gravity impact rock drilling device provided in this embodiment includes a support structure frame 10, a tool disc 20, an impact hammer 30, a crane 40, an elastic suspension mechanism 50 and a slag cleaning mechanism 60. A vertical channel for the impact hammer 30 to move is provided in the middle of the support structure frame 10, and the tool disc 20 is elastically suspended at the lower end of the support structure frame 10. The crane 40 is installed on the support structure frame 10. Before its use, the slag well construction must be completed by a reverse drilling rig or a directional drilling rig, and the upper and lower horizontal construction holes are also completed. The preliminary work is the same as the conditions of the ordinary drilling and blasting method, and this application will not be described in detail. Then use the upper flat hole sky anchor system to install it layer by layer from bottom to top, that is:

[0059] After the construction of the slag chute of the inclined shaft is completed, the support structure frame 10 is installed in the starting section of the inclined shaft so that the tool disc 20 is in contact with the face, and then the impact hammer 30 is lifted to a set height and released by the crane 40. In this embodiment, the impact hammer 30 is lifted to a height of 15m. After reaching the top, the unhooker is unhooked, and the impact hammer 30 falls and supports the impact load-bearing pier, so that the impact hammer 30 hammers the tool disc 20 to drive the drill bit 21 to impact downward for rock drilling.

[0060] Combination Figure 7 After the impact hammer 30 impacts the force-bearing pier, the slag cleaning hammer 65 continues to fall under the action of inertia, and compresses the connecting spring 66, and finally hits the piston rod of the pressurized oil cylinder 67, and presses the hydraulic oil in the pressurized oil cylinder 67 into the slag cleaning oil cylinder 63, so that the piston rod of the slag cleaning oil cylinder 63 is extended to drive the slag cleaning support arm 69 to rotate outward, and finally drives the pawl 62 to rotate outward through the transmission shaft, thereby driving the ratchet 61 to rotate, and the ratchet 61 drives the tool disc 20 to rotate, so that the drill cutter 21 rotates relative to the face, and the stone or soil residue chiseled off is scraped off.

[0061] When the tool disc 20 rotates to a set angle (about 1°, determined by the division of each tooth of the ratchet 61), the resistance of the drill cutter 21 becomes larger, the tool disc 20 stops rotating, and the excess kinetic energy of the slag cleaning hammer 65 presses the hydraulic oil into the accumulator 68. At this time, the crane 40 lifts the impact hammer 30 again, the slag cleaning hammer 65 and the impact hammer 30 are pulled up, and the pressure on the force-bearing pier disappears. Since the tool disc 20 is elastically suspended at the lower end of the support structure frame 10, under the action of the elastic suspension mechanism 50, the tool disc 20 is driven to move upward. After the tool disc 20 moves back, the torque limiting the rotation of the tool disc 20 disappears, and the pressure of the hydraulic oil in the slag cleaning cylinder 63 and the accumulator 68 is still greater than the elastic force of the reset spring 64. The tool disc 20 continues to rotate to a set angle (about 1°) driven by the slag cleaning cylinder 63, so that the drill cutter 21 rotates to the next working position and waits for the next rock drilling stroke.

[0062] When the energy storage device 68 is completed, the elastic force of the return spring 64 is greater than the left side (based on Figure 7) oil pressure, the reset spring 64 drives the slag cleaning piston to move to the left, pressurizing the hydraulic oil into the pressurizing cylinder 67, and completing the reset of the pressurizing cylinder 67. At the same time, the slag cleaning piston rod drives the pawl 62 to move to the left through the slag cleaning arm 69 and the transmission shaft, so as to move to the next tooth position of the ratchet 61. It can be known that the pawl 62 presses the teeth of the ratchet 61 under the action of the compression spring, and when sliding to the next tooth position, the normal meshing of the pawl 62 and the ratchet 61 is ensured.

[0063] Among them, in this embodiment, the impact hammer 30 is lifted by the crane 40, and the lifting power is small, the impact weight has a large gravitational potential energy, and the energy consumption is low; at the same time, the impact hammer 30 is used to impact the drill bit 21 for rock drilling, and the degree of automation is high, and there is less manual intervention in the rock drilling process; and the support structure frame 10 can be used as an integrated platform for excavation in the hole, and an automatic support system for drilling, inserting rods and grouting can be installed on the support structure frame 10 to achieve multiple uses of one machine.

[0064] In summary, the gravity impact rock drilling device provided in this embodiment uses a crane to lift the impact hammer, and the impact hammer impacts the drill bit to drill the rock, without the need for drilling and blasting. It has the characteristics of high safety, low labor intensity and high construction efficiency.

[0065] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gravity impact rock drilling device, characterized in that: include: The supporting structure frame (10) is installed and fixed in the inclined shaft section in the working state, and a vertical channel for the impact hammer (30) to move is arranged in the middle; A tool disc (20) is elastically suspended at the lower end of the support structure frame (10), and a plurality of chisel cutters (21) are distributed around the circumference of the lower end surface; An impact hammer (30) for hammering the tool disc (20); A crane (40) is installed on the supporting structure frame (10) and is used to lift the impact hammer (30) and can release the impact hammer (30) at a set height.

2. The gravity impact rock drilling device according to claim 1, characterized in that: The support structure frame (10) has a plurality of support shoes (11) arranged in a circumferential array, and a support cylinder (12) is arranged between the support shoes (11) and the main body of the support structure frame (10), and the acting force of the support cylinder (12) is between the support shoes (11) and the main body of the support structure frame (10).

3. The gravity impact rock drilling device according to claim 1, characterized in that: An adjustment slide rail (13) is provided at the upper end of the support structure frame (10), and the adjustment slide rail (13) extends in the radial direction of the support structure frame; The crane (40) is installed on the adjusting slide rail (13), and the position of the crane (40) on the adjusting slide rail (13) is changeable.

4. The gravity impact rock drilling device according to claim 1, characterized in that: It also comprises an elastic suspension mechanism (50), wherein the elastic suspension mechanism (50) is used to connect the support structure frame (10) and the tool disc (20).

5. The gravity impact rock drilling device according to claim 4, characterized in that: The elastic suspension mechanism (50) comprises a plurality of elastic suspension components, wherein the elastic suspension components include: Connecting bolts (51) for connecting the supporting structure frame (10) and the tool plate (20); A ball stud (52), the end of which is slidably disposed at the lower end of the supporting structure frame (10); An upper baffle (53) is slidably sleeved outside the rod section of the ball stud (52) and abuts against the lower end of the tool disc (20); A lower baffle (54) fixed to the lower end of the ball stud (52); The suspension spring (55) is sleeved outside the rod section of the ball stud (52) and is located between the upper baffle plate (53) and the lower baffle plate (54).

6. The gravity impact rock drilling device according to claim 1, characterized in that: It also includes a slag cleaning mechanism (60), which can remove slag after the impact hammer (30) strikes the tool disc (20).

7. The gravity impact rock drilling device according to claim 6, characterized in that: The slag cleaning mechanism (60) comprises: A ratchet wheel (61) is fixed on the upper end surface of the tool disc (20) and is coaxially arranged with the tool disc (20); A ratchet pawl (62) adapted to the ratchet wheel (61); A slag cleaning cylinder (63), one end of which is drivingly connected to the ratchet (62) and the other end of which is hinged to the supporting structure frame (10), and is equipped with a reset spring (64) for driving the ratchet (62) to drive the ratchet wheel (61) to rotate and to reset the ratchet (62); The slag cleaning hammer (65) is elastically mounted on the impact hammer (30) and is capable of pressurizing the slag cleaning cylinder (63) after the impact hammer (30) strikes the tool disc (20).

8. The gravity impact rock drilling device according to claim 7, characterized in that: The slag cleaning hammer (65) is movably sleeved outside the impact hammer (30), and the slag cleaning hammer (65) can limit the impact hammer (30); The slag cleaning hammer (65) is provided with a connecting lifting lug, and the connecting lifting lug is connected to the crane (40) via a decoupling device; A connecting spring (66) is provided between the slag cleaning hammer (65) and the impact hammer (30), and the acting force of the connecting spring (66) is between the top of the inner cavity of the slag cleaning hammer (65) and the upper end of the impact hammer (30); The slag cleaning mechanism (60) further comprises a pressurized oil cylinder (67), which is arranged vertically. The upper end of the piston rod of the pressurized oil cylinder (67) extends out of the cylinder body and is located on the moving path of the slag cleaning hammer (65). The oil outlet end of the pressurized oil cylinder (67) is connected to the oil pressure chamber of the slag cleaning cylinder (63).

9. The gravity impact rock drilling device according to claim 8, characterized in that: An energy storage device (68) is connected between the pressurizing cylinder (67) and the residue cleaning cylinder (63).

10. The gravity impact rock drilling device according to claim 7, characterized in that: The slag cleaning mechanism (60) also includes a slag cleaning support arm (69), one end of which is hinged to the piston rod of the slag cleaning cylinder (63), the other end of which is fixedly connected to the ratchet (62), and the middle part of which is hinged to the supporting structure frame (10).

11. The gravity impact rock drilling device according to any one of claims 1 to 10, characterized in that: The blade of the chisel (21) is a saddle-shaped structure with a triangular blade angle.

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