Underground portable percussion drill device based on pressure power generation

Abstract

The invention discloses an underground portable percussion drill device based on pressure power generation, and belongs to the technical field of pressure power generation. The device comprises a drilling part, a dust discharging part, a self-electricity-storage part and a percussion drill main body part, the drilling part comprises a percussion drill rod, a rotating sleeve, a mounting seat and a telescopic dust cover, and the dust discharging part comprises a dust discharging pipeline, a filter screen and a small air blower; the self-power-storage part comprises a piezoelectric conversion device and a current integration device; the piezoelectric conversion device converts mechanical energy generated by vibration of the percussion drill rod into electric energy by cutting magnetic induction lines through the permanent magnet, and the current integration device generates stable direct current from generated unstable alternating current and directly stores the stable direct current into the storage battery to supply power to the percussion drill. The problem that a traditional electric percussion drill needs to be charged frequently is solved, and the viscosity problem caused by long-time use of a hydraulic percussion drill is also solved; the operation duration of a traditional percussion drill is prolonged, meanwhile, relevant policies of national green mines are responded, and energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The invention relates to a portable downhole impact drill device based on pressure power generation, belonging to the technical field of pressure power generation. Background Art

[0002] At present, the portable underground impact drill devices used in China are generally divided into electric and hydraulic types. The single-charge usage time of traditional electric impact drills may not meet the operational needs, and frequent charging or battery replacement is required, which to a certain extent affects the continuity of operations. After a hydraulic impact drill has been used for a period of time, the residual emulsion dirt may stick to the filter element, causing the hydraulic motor to fail to operate normally, which also has a certain impact on the operation.

[0003] Considering the disadvantages of the above two devices, it is urgent to design a new impact drilling device to meet the requirements of underground operations. Summary of the invention

[0004] The present invention aims to provide a portable underground impact drill device based on pressure power generation. The present invention combines the technology of pressure power generation with the underground impact drill to design a portable impact drill that can generate electricity by itself. This improvement not only increases the operating time of traditional impact drills, but also responds to the relevant policies of the national green mines and achieves energy conservation and emission reduction.

[0005] Compared with the prior art, this device does not require long-distance transmission of electric energy. At the same time, the internal structure of the device is adjusted. The electromagnetic coil is fixed on the insulated explosion-proof hard shell through a fixed plate. The electromagnetic coil is connected to the piston push rod through a moving plate. The spring drives the compression push rod to move in the vertical direction, changes the state of air compression and expansion in the sealed cabin, and provides the piston push rod with horizontal displacement, so that the permanent magnet can generate relative displacement with the electromagnetic coil to generate induced electromotive force. This device can add more groups of electromagnetic coils and permanent magnets, which improves the power generation capacity of the device to a certain extent. The improvement of the present invention not only solves the problem of frequent charging of traditional electric impact drills, but also solves the viscosity problem caused by long-term use of hydraulic impact drills, providing a new idea for underground single work.

[0006] The present invention provides a portable downhole impact drill device based on pressure power generation, which includes a drilling part, a dust exhaust part, a self-storage part and an impact drill main body part. The drilling part includes an impact drill rod, a rotating sleeve, a mounting seat and a retractable dust cover. The impact drill rod is made of hard steel, has a rough surface, has threads and is easy to drill. The bottom of the impact drill rod and the rotating sleeve are tightly connected by internal and external threads to ensure that the impact drill rod will only undergo axial displacement but not radial displacement. At the same time, the impact drill rod can be disassembled and replaced, and the appropriate length and material can be selected according to different working conditions.

[0007] The bottom end of the rotating sleeve is welded to the mounting seat to form a whole, and the bottom end of the telescopic dust cover is fixed to the mounting seat without gap, wherein the mounting seat is a hard steel material with a radius of 10 cm and a thickness of 10 cm; The retractable dust cover is a transparent trumpet-shaped structure, with the top slightly wider than the bottom. The retractable dust cover is made of transparent hard plastic material, with specific dimensions of 18 cm in height, a circle with a radius of 14 cm at the top, and a circle with a radius of 10 cm at the bottom. The retractable dust cover is provided with a hinge, which can be compressed and stretched under the drive of the hinge as the drilling depth changes, so that the retractable dust cover moves in several sections. The retractable dust cover can keep the top of the dust cover close to the working surface at all times, preventing large pieces of falling rocks from causing harm to the workers during operation. At the same time, the closed environment also avoids the effects of blurred vision caused by dust flying during operation.

[0008] The dust exhaust part includes a dust exhaust pipe, a filter and a small blower; a small hole is symmetrically left on the left and right sides of the bottom end of the retractable dust cover, and the dust exhaust pipe is connected to the inside and outside of the dust cover through one of the small holes. The blower connecting pipe blows air into the dust cover through the small hole at another symmetrical position; the filter is fixed at the connection between the small hole and the dust exhaust pipe.

[0009] The self-storage part includes a piezoelectric conversion device and a current integration device; The piezoelectric conversion device includes a shaft, a permanent magnet, an electromagnetic coil, a fixed plate, a movable plate, a rigid spring, a sealed cabin, a compression push rod, a piston push rod, and an insulating explosion-proof hard shell, and a charging port is provided on the insulating explosion-proof hard shell; The top of the rigid spring is fixed on the top plate of the piezoelectric converter, and the bottom of the rigid spring is connected to the compression push rod, and is tightly surrounded by an insulated explosion-proof hard shell. The upper end of the current integration device storage bin is tightly connected to the shaft, and the lower end is connected to the impact drill body. The rigid spring can reduce the vibration of the drill rig on the human arm during the drilling process, and drive the compression push rod to move downward to compress the air in the sealed cabin, push the piston push rod to produce horizontal displacement, and make the permanent magnet and the electromagnetic coil produce relative displacement to generate induced electromotive force.

[0010] The permanent magnet is connected to the piston push rod through the moving plate, and the electromagnetic coil is fixed on the inner wall of the insulating explosion-proof hard shell through the fixed plate. When the device is working, vibration will be generated due to the drilling of the end head. When the drilling rod is impacted, the vibration of the drill bit drives the spring to compress, and the compression push rod moves vertically downward to squeeze the air in the sealed cabin. The permanent magnet connected to the piston push rod and fixed on the moving plate produces horizontal displacement and is horizontally inserted into the horizontally placed electromagnetic coil fixed to the inner wall of the insulating explosion-proof hard shell through the fixed plate, generating an induced electromotive force.

[0011] During the drilling process, the vibration of the drill bit during the impact drill operation drives the spring to compress, and the compression push rod moves vertically downward to squeeze the air in the sealed cabin. The permanent magnet connected to the piston push rod and fixed on the moving plate produces a horizontal displacement and is horizontally inserted into the horizontally placed electromagnetic coil fixed to the inner wall of the piezoelectric conversion device through the fixed plate, generating an induced electromotive force, thereby generating an alternating induced current, and the generated alternating current is transmitted to the current integration device through a wire.

[0012] The current integration device includes a rectifier, a filter and a voltage stabilizer. The main electronic component of the rectifier is a diode, which converts alternating current into unidirectional direct current. The main electronic component of the filter is a small capacitor, which converts the half-wave voltage into a stable direct current voltage. The voltage stabilizer can stabilize the generated direct current to the required voltage. The above components are all placed in the storage bin of the current integration device. The upper end of the storage bin of the current integration device is tightly connected to the shaft, and the lower end is connected to the impact drill body. Because the storage bin of the current integration device contains electronic components, it is necessary to lay a moisture-proof mat, drill heat dissipation holes, and take fixing measures for the electronic components to prevent the vibration caused during the operation from damaging the components.

[0013] The battery in the portable downhole impact drill device based on pressure power generation can directly use the stable direct current generated by the internal piezoelectric conversion device after rectification, filtering and boosting, or use an auxiliary power supply method, that is, accept direct charging from an external power source.

[0014] The impact drill body is connected with an impact drill handle for easy operation.

[0015] The present invention provides a method for using the above-mentioned portable downhole impact drilling device based on pressure power generation, comprising the following steps: When drilling underground, first pull out the dust cover to a position flush with the impact drill bit, then turn on the blower and start blowing air into the dust cover, align the drill bit with the marked drilling position and make the top of the dust cover fit tightly against the working surface, press the start switch and the impact drill starts working. The drill bit vibrates during the drilling process, and the piezoelectric conversion device converts the mechanical energy generated by the drill bit into the kinetic energy of the compression push rod moving in the vertical direction. As the air in the sealed cabin is compressed and expanded, it drives the piston push rod to move in the horizontal direction, so that the permanent magnet fixed on the moving plate is horizontally inserted into the electromagnetic coil fixed on the fixed plate, thereby generating alternating magnetic flux, realizing the conversion of mechanical energy into electrical energy, and storing this part of the generated electrical energy in the battery to power the impact drill; as the drill bit continues to go deeper, the dust cover continues to shrink. When the dust cover is full of fallen rocks, the drilling rig is removed for cleaning, and then the above work is repeated.

[0016] Beneficial effects of the present invention: (1) The present invention not only solves the problem of frequent charging of traditional electric impact drills, but also solves the sticking problem caused by long-term use of hydraulic impact drills, providing a new idea for underground single-work operations; (2) By adding a rigid spring, the vibration of the drilling rig on the human arm during the drilling process is reduced, and the compression push rod is driven to move downward to compress the air in the sealed cabin, pushing the piston push rod to produce horizontal displacement, causing the permanent magnet and the electromagnetic coil to produce relative displacement to generate induced electromotive force, and also generating additional current to power the battery; (3) While increasing the operating time of traditional impact drilling, it also responds to the relevant national green mining policies and produces beneficial effects of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall appearance of the portable downhole impact drilling device based on pressure power generation of the present invention; Figure 2 The following are the parameters of the components of the drilling part and the dust removal part of the portable downhole percussion drill based on pressure power generation, where (a) is Figure 1 The top view of the structure, Figure (b) is Figure 1 The front view structure diagram of Figure 3 It is a three-dimensional structural diagram of the drilling part and dust exhaust part of the portable downhole impact drilling device based on pressure power generation; Figure 4 This is a diagram showing the internal structure of a piezoelectric converter for a portable downhole impact drill based on pressure power generation; Figure 5 Parameter diagram of each device of the current integration device of the portable downhole impact drill device based on pressure power generation; Figure 6 It is a three-dimensional structural diagram of a current integration device for a portable downhole impact drill device based on pressure power generation; Figure 7 This is a parameter diagram of each component of the main body of the portable downhole impact drill device based on pressure power generation; Figure 8 This is a three-dimensional structural diagram of the main body of a portable downhole impact drill device based on pressure power generation; In the figure: 1 is a drilling part, 2 is a dust exhaust part, 3 is a self-storage part, 4 is a percussion drill main body, 5 is a percussion drill rod, 6 is a retractable dust cover, 7 is a blower air inlet, 8 is a dust exhaust port, 9 is a hinged part connecting the dust covers of various parts, 10 is a front grip of a built-in small blower, 11 is a rotating sleeve and a mounting seat, 12 is a top plate of a piezoelectric converter, 13 is an insulating explosion-proof hard shell, 14 is a rigid spring, 15 is a compression push rod, 16 is an electromagnetic coil, 17 is a permanent magnet, 18 is a fixed plate, 19 is a moving plate, 20 is a sealed cabin, 21 is a piston push rod, 22 is a shaft, 23 is a bottom plate of a piezoelectric converter, 24 is a rectifier, 25 is a filter, 26 is a voltage stabilizer, 27 is a battery, 28 is an external charging port, 29 is a current integration device storage bin, 30 is a rear grip of the percussion drill, and 31 is a percussion drill main body. DETAILED DESCRIPTION

[0018] The present invention is further illustrated by the following examples, but is not limited to the following examples. Example 1

[0019] like Figures 1 to 8 As shown in FIG. 1 , the portable downhole impact drill device based on pressure power generation provided by the present invention is composed of a drilling part 1, a dust removal part 2, a pressure power generation device 3 and an impact drill body 4 connected in sequence, as shown in FIG. Figure 1 As shown; the pressure power generation device 3 includes a piezoelectric conversion device and a current integration device; like Figure 2 and 3 As shown, the drilling part 1 includes an impact drill rod 5, a rotating sleeve and a mounting seat 11, and a retractable dust cover 6, and the dust exhaust part 2 includes a dust exhaust pipe, a filter screen and a small blower; The impact drill rod 5 is located at the center of the drilling part 1; the bottom end of the retractable dust cover 6 is fixed on the rotating sleeve and the mounting seat 11 without gap, wherein the mounting seat is a cylindrical structure (made of hard steel) with a radius of 10 cm and a thickness of 10 cm, and the retractable dust cover is made of transparent hard plastic material, and its specifications are: 18 cm high, the top cross-section is a circle with a radius of 14 cm, and the bottom cross-section is a circle with a radius of 10 cm. The retractable dust cover 6 is symmetrically provided with a small hole on the left and right sides, which are respectively the blower air inlet 7 and the dust outlet 8. The dust outlet 8 is connected to the inner and outer sides of the dust cover by the dust outlet 8. The blower is arranged in the handle of the impact drill and blows air into the dust cover through the small hole at another symmetrical position through the pipe. A plurality of hinges 9 are evenly arranged on the retractable dust cover 6, which can be compressed and stretched to perform several displacements as the drilling depth changes, so as to realize the retractable function. The retractable dust cover 6 can keep the top of the dust cover close to the working surface at all times to prevent large falling rocks from causing harm to the workers during operation. At the same time, the closed environment also avoids the blurred vision caused by dust flying during operation. The built-in filtering device is a filter net, which is fixed at the position of the dust outlet 8.

[0020] like Figure 4 As shown, the piezoelectric conversion device includes a piezoelectric conversion device top plate 12, an insulating explosion-proof hard shell 13, a rigid spring 14, a compression push rod 15, an electromagnetic coil 16, a permanent magnet 17, a fixed plate 18, a moving plate 19, a sealed cabin 20, a piston push rod 21, a shaft 22, and a piezoelectric conversion device bottom plate 23; The top end of the rigid spring 14 is fixed on the top plate 12 of the piezoelectric converter, the bottom end is fixed on the compression push rod 15, and is tightly surrounded by the insulating explosion-proof hard shell 13. The rigid spring has the following functions: it can reduce the vibration of the drilling rig on the human arm during the drilling process, and drive the compression push rod to move downward to compress the air in the sealed cabin, push the piston push rod to produce horizontal displacement, and make the permanent magnet and the electromagnetic coil produce relative displacement to generate induced electromotive force.

[0021] Several groups of electromagnetic coils 16 are fixed on the inner wall 13 of the insulating explosion-proof hard shell through a fixed plate 18, and permanent magnets 17, which are equal in number and arranged opposite to the electromagnetic coils 16, are connected to the piston push rod 21 through a moving plate 19. The upper end of the shaft 22 is connected to the bottom of the sealed cabin 20, and the lower end is connected to the bottom plate 23 of the piezoelectric conversion device.

[0022] When the device is working, the end drilling will generate vibration. When the drilling rod is impacted, the vibration of the drill bit drives the rigid spring to compress. The compression push rod moves vertically downward to squeeze the air in the sealed cabin. The permanent magnet connected to the piston push rod and fixed on the moving plate produces horizontal displacement and is horizontally inserted into the horizontally placed electromagnetic coil fixed to the inner wall of the insulating explosion-proof hard shell through the fixed plate, generating an induced electromotive force.

[0023] The upper end of the current integration device storage bin is closely connected to the bottom end of the shaft of the piezoelectric converter, and the lower end is connected to the impact drill body. The current integration device includes a rectifier, a filter and a voltage stabilizer. The main electronic component of the rectifier 24 is a diode, which converts AC into unidirectional DC. The main electronic component of the filter 25 is a small capacitor, which converts the half-wave voltage into a stable DC voltage. The voltage stabilizer 26 can stabilize the generated DC to the required voltage. The above components and batteries 27 are all laid in the current integration device storage bin 29 in an orderly manner, and are connected to the piezoelectric converter through wires. The battery can be powered when necessary, and the external charging port 28 can directly charge the battery. Because the current integration device storage bin contains electronic components, it is necessary to lay moisture-proof pads, drill heat dissipation holes, and fix the electronic components to prevent the vibration caused during the operation from damaging the components.

[0024] The present invention provides a method for using the above-mentioned portable downhole impact drilling device based on pressure power generation, comprising the following steps: (1) When drilling underground, first pull out the dust cover to the level with the impact drill bit, then turn on the blower to start blowing air into the dust cover, align the drill bit with the marked drilling position and make the top of the dust cover fit tightly against the working surface, then press the start switch to start the impact drill; (2) The drill bit vibrates during the drilling process, and the piezoelectric converter converts the mechanical energy brought by this vibration into electrical energy and stores it in the battery to power the impact drill: When the impact drill rod 5 is working, the vibration of the drill bit will drive the impact drill rod 5 to move in the vertical direction through the rigid spring 14, thereby compressing or expanding the air in the sealed cabin 20, driving the piston push rod 21 to drive the permanent magnet 17 to move in the horizontal direction, and produce relative linear motion with the electromagnetic coil 16 arranged horizontally opposite the permanent magnet 17, thereby generating an induced electromotive force. This part of unstable alternating current is collected and transmitted to the current integration device through a wire. First, the alternating current is converted into direct current through a rectifier, and then the noise is removed and the signal is enhanced through a filter. Finally, it is output as a stable voltage through a voltage regulator, thereby realizing the transformation from unstable alternating current to stable direct current. This part of stable direct current is collected in the battery for use by the impact drill.

[0025] (3) During operation, the upper end of the dust cover is always in close contact with the working surface. As the drilling depth changes, the retractable dust cover is compressed and stretched under the drive of the hinge and moves in several stages. At the same time, the blower always blows air from one side of the retractable dust cover to discharge the dust generated during the drilling process into the retractable dust cover through the filter. As the broken rocks in the retractable dust cover continue to accumulate until the retractable dust cover can no longer be compressed, the operation is stopped, the drilling rig is removed and the rocks inside the retractable dust cover are cleared, and then the above operation is repeated.

Claims

1. A portable downhole impact drilling device based on pressure power generation, characterized in that: It includes a drilling part, a dust exhaust part, a self-storage part and a main body of an impact drill, wherein the drilling part includes an impact drill rod, a rotating sleeve, a mounting seat and a retractable dust cover, wherein the bottom of the impact drill rod and the rotating sleeve are tightly connected by internal and external threads to ensure that the impact drill rod will only undergo axial displacement and will not undergo radial displacement, the bottom end of the rotating sleeve is welded to the mounting seat to form a whole, and the bottom end of the retractable dust cover is fixed to the mounting seat without gap; the dust exhaust part includes a dust exhaust pipe, a filter screen and a small blower; The self-storage part includes a piezoelectric conversion device and a current integration device; the piezoelectric conversion device includes a shaft, a permanent magnet, an electromagnetic coil, a fixed plate, a moving plate, a rigid spring, a sealed cabin, a compression push rod, a piston push rod, and an insulating explosion-proof hard shell, and a charging port is provided on the insulating explosion-proof hard shell; the top end of the rigid spring is fixed on the top plate of the piezoelectric conversion device, and the bottom end of the rigid spring is connected to the compression push rod, and is tightly surrounded by the insulating explosion-proof hard shell on all sides; the permanent magnet is connected to the piston push rod through the moving plate, and the electromagnetic coil is fixed to the inner wall of the insulating explosion-proof hard shell through the fixed plate. When the device is working, vibration is generated due to the end drilling. When the drilling rod is impacted, the vibration of the drill bit drives the spring to compress, and the compression push rod moves vertically downward to squeeze the air in the sealed cabin. The permanent magnet connected to the piston push rod and fixed on the moving plate produces a horizontal displacement and is inserted into the horizontal electromagnetic coil to generate an induced electromotive force; the current integration device includes a rectifier, a filter and a voltage stabilizer.

2. The portable downhole impact drilling device based on pressure power generation according to claim 1 is characterized in that: The impact drill rod is made of hard steel with a rough surface, threads and is easy to drill. At the same time, the impact drill rod can be disassembled and replaced, and the appropriate length and material can be selected according to different working conditions. The mounting seat is made of hard steel with a radius of 10 cm and a thickness of 10 cm.

3. The portable downhole impact drilling device based on pressure power generation according to claim 1, characterized in that: The retractable dust cover is a transparent trumpet-shaped structure with the top slightly wider than the bottom. The retractable dust cover is made of transparent hard plastic material with specific dimensions of 18 cm in height, a top cross-section being a circle with a radius of 14 cm, and a bottom cross-section being a circle with a radius of 10 cm. A hinge is provided on the retractable dust cover, which can be compressed and stretched under the drive of the hinge as the drilling depth changes, causing the retractable dust cover to move in several stages.

4. The portable downhole impact drilling device based on pressure power generation according to claim 1, characterized in that: A small hole is symmetrically left on the left and right sides of the bottom of the retractable dust cover. The dust exhaust duct is connected to the inside and outside of the dust cover through one of the small holes. The blower connecting duct blows air into the dust cover through another small hole at a symmetrical position; the filter is fixed at the connection between the small hole and the dust exhaust duct.

5. The portable downhole impact drilling device based on pressure power generation according to claim 1, characterized in that: The rectifier of the current integration device is a diode, the filter is a small capacitor, and the voltage stabilizer stabilizes the generated direct current to the required voltage. The above components are all placed in the storage bin of the current integration device.

6. The portable downhole impact drilling device based on pressure power generation according to claim 1, characterized in that: The upper end of the current integration device storage bin is closely connected to the bottom end of the rigid spring, and the lower end is connected to the impact drill body; the current integration device storage bin is paved with a moisture-proof mat and is provided with heat dissipation holes.

7. A method for using the portable downhole impact drill device based on pressure power generation according to any one of claims 1 to 6, characterized in that The following steps are involved: (1) When drilling underground, first pull out the dust cover to the level with the impact drill bit, then turn on the blower to start blowing air into the dust cover, align the drill bit with the marked drilling position and make the top of the dust cover fit tightly against the working surface, then press the start switch to start the impact drill; (2) The drill bit vibrates during the drilling process, and the piezoelectric converter converts the mechanical energy brought by this vibration into electrical energy and stores it in the battery to power the impact drill: When the impact drill rod is operating, the vibration of the drill bit will drive the impact drill rod to move in the vertical direction through the rigid spring, thereby compressing or expanding the air in the sealed cabin, driving the piston push rod to drive the permanent magnet to move in the horizontal direction, and produce relative linear motion with the electromagnetic coil placed horizontally opposite the permanent magnet, thereby generating an induced electromotive force; this part of the unstable alternating current is collected and transmitted to the current integration device through a wire, first converted into direct current through a rectifier, then the noise is removed and the signal is enhanced through a filter, and finally output as a stable voltage through a voltage regulator, thereby realizing the transformation from unstable alternating current to stable direct current, and this part of the stable direct current is collected in the battery for use by the impact drill; (3) During operation, the upper end of the dust cover is always in close contact with the working surface. As the drilling depth changes, the retractable dust cover is compressed and stretched under the drive of the hinge and moves several times. At the same time, the blower always blows air from one side of the retractable dust cover to discharge the dust generated during the drilling process into the retractable dust cover through the filter. As the broken rocks in the retractable dust cover continue to accumulate until the retractable dust cover can no longer be compressed, the operation is stopped, the drilling rig is removed to clean the stones inside the retractable dust cover, and then the above operation is repeated.

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