A portable downhole percussion drilling device based on pressure power generation

Abstract

The present invention discloses a portable underground impact drill device based on pressure power generation, which belongs to the field of pressure power generation technology. The device includes a drilling part, a dust exhaust part, a self-storage part and an impact drill main body. The drilling part includes an impact drill rod, a rotating sleeve, a mounting seat and a retractable dust cover. The dust exhaust part includes a dust exhaust pipe, a filter screen and a small blower. The self-storage part includes a piezoelectric converter and a current integration device. The piezoelectric converter converts the mechanical energy generated by the vibration of the impact drill rod into electrical energy by cutting the magnetic flux lines with a permanent magnet. The current integration device converts the generated unstable alternating current into stable direct current and directly stores it in a battery to power the impact drill. 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. While improving the operating time of traditional impact drills, it also responds to the relevant policies of the national green mines and achieves energy conservation and emission reduction.

Description

Technical Field

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

[0002] At present, the portable downhole 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 period of use of a hydraulic impact drill, the residual emulsion dirt may stick to the filter element of the filter, causing the hydraulic motor to fail to operate normally, which also has a certain impact on the operation.

[0003] Considering the drawbacks of the above two devices, it is urgent to design a new type of impact drilling device to meet the requirements of downhole 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, achieving energy conservation and emission reduction.

[0005] Compared with the existing technology, this device does not require long-distance transmission of electrical energy. At the same time, adjustments are made to the internal structure of the device. The electromagnetic coil is fixed to the insulated explosion-proof hard shell through a fixed plate. The electromagnetic coil is connected to the piston push rod through a movable plate. The compression push rod is driven by a spring to move in the vertical direction, changing the state of air compression and expansion in the sealed cabin, providing the piston push rod with horizontal displacement, so that the permanent magnet can produce relative displacement with the electromagnetic coil to generate an 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 a percussion drill main body. The drilling part includes a percussion drill rod, a rotating sleeve, a mounting seat and a retractable dust cover. The percussion drill rod is made of hard steel, has a rough surface, has threads and is easy to drill. The bottom of the percussion drill rod and the rotating sleeve are tightly connected by internal and external threads to ensure that the percussion drill rod will only undergo axial displacement and not radial displacement. At the same time, the percussion 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 base to form an integral body, and the bottom end of the retractable dust cover is fixed to the mounting base without gaps, wherein the mounting base is made of hard steel with a radius of 10 cm and a thickness of 10 cm;

[0008] The retractable dust cover is a transparent trumpet-shaped structure, slightly wider at the top than at the bottom. Made of transparent, hard plastic, its dimensions are: 18cm high, with a top cross-section shaped like a circle with a radius of 14cm, and a bottom cross-section shaped like a circle with a radius of 10cm. The retractable dust cover is equipped with a hinge that compresses and stretches as the drilling depth changes, causing the cover to move in several stages. This allows the top of the dust cover to remain firmly in contact with the work surface, preventing injuries from falling rocks during operation. The enclosed environment also prevents dust from blurring vision and other effects during operation.

[0009] 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.

[0010] The self-storage part includes a piezoelectric conversion device and a current integration device;

[0011] 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, wherein the insulating explosion-proof hard shell is provided with a charging port;

[0012] The top end of the rigid spring is fixed to the top plate of the piezoelectric converter, while the bottom end is connected to the compression push rod. The spring is tightly surrounded by an insulated, explosion-proof, hard shell. The top end of the current integration device storage compartment is tightly connected to the shaft, and the bottom end is connected to the impact drill body. The rigid spring functions to reduce the vibration felt by the drill rig on the user's arm during drilling, and drives the compression push rod downward to compress the air within the sealed chamber, pushing the piston push rod to generate horizontal displacement, causing relative displacement between the permanent magnet and the electromagnetic coil to generate an induced electromotive force.

[0013] The permanent magnet is connected to the piston push rod through a movable plate, and the electromagnetic coil is fixed to the inner wall of the insulating explosion-proof hard shell through a fixed plate. When the device is working, vibration is 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 movable 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.

[0014] 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 horizontal displacement and horizontally inserts into the horizontal 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. The generated alternating current is transmitted to the current integration device through a wire.

[0015] 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 half-wave voltage into a smooth 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 current integration device storage bin is tightly connected to the shaft, and the lower end is connected to the impact drill body. Because the current integration device storage bin 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 operation from damaging the components.

[0016] The battery in the portable downhole percussion 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 supply.

[0017] The impact drill body is connected to an impact drill handle for easy operation.

[0018] The present invention provides a method for using the above-mentioned portable downhole percussion drilling device based on pressure power generation, comprising the following steps:

[0019] 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. After pressing the start switch, 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 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 penetrate deeper, the dust cover continues to shrink. When the dust cover is full of fallen rocks, the drilling rig is removed and cleaned, and then the above work is repeated.

[0020] Beneficial effects of the present invention:

[0021] (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;

[0022] (2) By adding a rigid spring, the vibration of the drill rig on the human arm during drilling 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;

[0023] (3) While improving the operating time of traditional impact drilling, it also responds to the relevant policies of the national green mines and produces beneficial effects of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is an overall appearance diagram of the portable downhole percussion drilling device based on pressure power generation according to the present invention;

[0025] Figure 2 The parameters of the components of the drilling part and the dust removal part of the portable downhole percussion drill device based on pressure power generation are shown in Figure (a). Figure 1 The top view of the structure, Figure (b) is Figure 1 The front view structure diagram;

[0026] Figure 3 A three-dimensional structural diagram of the drilling and dust removal parts of a portable downhole percussion drill device based on pressure power generation;

[0027] Figure 4 This is a diagram showing the internal structure of the piezoelectric converter of a portable downhole percussion drill device based on pressure power generation;

[0028] Figure 5 Parameter diagram of each component of the current integration device of the portable downhole percussion drill device based on pressure power generation;

[0029] Figure 6 A three-dimensional structural diagram of a current integration device for a portable downhole percussion drill device based on pressure power generation;

[0030] Figure 7 This is a parameter diagram of the components of the main body of the portable downhole percussion drill device based on pressure power generation;

[0031] Figure 8 This is a three-dimensional structural diagram of the main body of a portable downhole percussion drilling device based on pressure power generation;

[0032] In the figure: 1 is the drilling part, 2 is the dust exhaust part, 3 is the self-storage part, 4 is the impact drill main body, 5 is the impact drill rod, 6 is the retractable dust cover, 7 is the blower air inlet, 8 is the dust exhaust port, 9 is the hinged part connecting the dust covers of each part, 10 is the front grip of the built-in small blower, 11 is the rotating sleeve and the mounting seat, 12 is the piezoelectric converter top plate, 13 is the insulating explosion-proof hard shell, 14 is the rigid spring, 15 is the compression push rod, 16 is the electromagnetic coil, 17 is the permanent magnet, 18 is the fixed plate, 19 is the moving plate, 20 is the sealed cabin, 21 is the piston push rod, 22 is the shaft, 23 is the piezoelectric converter bottom plate, 24 is the rectifier, 25 is the filter, 26 is the voltage stabilizer, 27 is the battery, 28 is the external charging port, 29 is the current integration device storage bin, 30 is the impact drill rear grip, and 31 is the impact drill main body. DETAILED DESCRIPTION

[0033] The present invention is further illustrated below by way of examples, but is not limited to the following examples. Example 1

[0034] like Figures 1 to 8 As shown in FIG, the portable downhole percussion drilling 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 a percussion 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;

[0035] like Figure 2 and 3 As shown, the drilling part 1 includes a percussion 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;

[0036] 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 to the rotating sleeve and the mounting base 11 without any gap, wherein the mounting base is a cylindrical structure with a radius of 10 cm and a thickness of 10 cm (made of hard steel). The retractable dust cover is made of transparent hard plastic, 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. There is a small hole symmetrically provided on the left and right sides of the retractable dust cover 6, which are the blower air inlet 7 and the dust outlet 8 respectively. The dust outlet duct is connected to the inner and outer sides of the dust cover through 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 duct. A number 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, thereby realizing 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 effects of 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.

[0037] like Figure 4 As shown, the piezoelectric converter includes a piezoelectric converter 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 movable plate 19, a sealed cabin 20, a piston push rod 21, a shaft 22, and a piezoelectric converter bottom plate 23;

[0038] The top end of the rigid spring 14 is fixed to the top plate 12 of the piezoelectric converter, and the bottom end is fixed to the compression push rod 15. The spring is tightly surrounded by an insulated, explosion-proof, hard shell 13. The rigid spring's functions include reducing the vibration felt by the drill rig on the user's arm during drilling, driving the compression push rod downward to compress the air within the sealed chamber, pushing the piston push rod to produce horizontal displacement, and generating an induced electromotive force by causing relative displacement between the permanent magnet and the electromagnetic coil.

[0039] Several groups of electromagnetic coils 16 are fixed to the inner wall 13 of the insulating explosion-proof hard shell through a fixed plate 18. Permanent magnets 17, which are equal in number to the electromagnetic coils 16 and arranged opposite to each other, are connected to the piston push rod 21 through a movable 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.

[0040] 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 horizontal electromagnetic coil fixed to the inner wall of the insulating explosion-proof hard shell through the fixed plate, generating an induced electromotive force.

[0041] The upper end of the current integration device storage bin is tightly 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 smooth DC voltage. The voltage stabilizer 26 can stabilize the generated DC to the required voltage. The above components and batteries 27 are all laid out in the current integration device storage bin 29 in an orderly manner, and are connected to the piezoelectric converter through wires. When necessary, they can supply power to the battery, 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 a moisture-proof mat, drill heat dissipation holes, and take fixing measures for the electronic components to prevent the vibration caused during operation from damaging the components.

[0042] The present invention provides a method for using the above-mentioned portable downhole percussion drilling device based on pressure power generation, comprising the following steps:

[0043] (1) When drilling underground, first pull out the dust cover to the level with the impact drill bit, then turn on the blower to blow 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;

[0044] (2) The drill bit vibrates during the drilling process. The piezoelectric converter converts the mechanical energy generated 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 generating relative linear motion with the electromagnetic coil 16 arranged horizontally opposite the permanent magnet 17, 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, the alternating current is converted into direct current through a rectifier, then the noise is removed and the signal is enhanced through a filter, and finally the voltage regulator outputs a stable voltage, thereby achieving the transformation from unstable alternating current to stable direct current. This part of the stable direct current is collected in the battery to supply the impact drill.

[0045] (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 sections. At the same time, the blower always blows air from one side of the retractable dust cover, and the dust generated during the drilling process is discharged 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 percussion drilling device based on pressure power generation, characterized by: The device comprises a drilling part, a dust exhaust part, a self-storage part and a main body of an impact drill. The drilling part comprises an impact drill rod, a rotating sleeve, a mounting seat and a retractable dust cover. 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 only undergoes axial displacement and does not undergo radial displacement. The bottom end of the rotating sleeve is welded to the mounting seat to form an integral whole. The bottom end of the retractable dust cover is fixed to the mounting seat without gaps. The dust exhaust part comprises 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 movable plate, a rigid spring, a sealed cabin, a compression push rod, a piston push rod, and an insulated explosion-proof hard shell, and the insulated explosion-proof hard shell is provided with a charging port; the top end of the rigid spring is fixed to 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 insulated explosion-proof hard shell on all sides; the permanent magnet is connected to the piston push rod through the movable plate, and the electromagnetic coil is fixed to the inner wall of the insulated explosion-proof hard shell through the fixed plate. When the device is working, vibration is 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 movable plate produces a horizontal displacement and is inserted into the horizontal electromagnetic coil, generating an induced electromotive force; the current integration device includes a rectifier, a filter and a voltage stabilizer.

2. The portable downhole percussion drilling device based on pressure power generation according to claim 1, 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 percussion 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 with the following specific dimensions: 18 cm in height, a top cross-section of a circle with a radius of 14 cm, and a bottom cross-section of a circle with a radius of 10 cm. 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, causing the retractable dust cover to undergo several displacements.

4. The portable downhole percussion 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 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.

5. The portable downhole percussion 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 DC power to the required voltage. The rectifier, filter, and voltage stabilizer are all placed in the storage bin of the current integration device.

6. The portable downhole percussion 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 tightly 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 downhole portable percussion drilling 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 blow 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 generating 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 by a rectifier, then the noise is removed by a filter to enhance the signal, and finally output as a stable voltage by 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 to supply 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 undergoes several displacements. At the same time, the blower always blows air from one side of the retractable dust cover, and the dust generated during the drilling process is discharged 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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