Power supply system of mining intrinsic safety type thermal imaging camera

Abstract

The invention discloses a power supply system of a mining intrinsic safety type thermal imaging camera, and relates to the field of coal mine underground monitoring, an energy taking structure in the power supply system drives an energy conversion structure on the outer side of the energy taking structure after receiving vibration of underground equipment, and the energy conversion structure drives an energy collection structure between energy transmission structures through energy transmission structures coaxially arranged with the energy conversion structure to enable the energy collection structure to store energy; the energy collecting structure releases at regular time to drive the direct-current generator to generate electric energy, unstable electric energy generated by the direct-current generator is subjected to voltage limiting, rectification and filtering through the rectification module, and smooth direct current is output; the energy storage and management module performs storage and charge and discharge management on the electric energy to ensure the continuity and stability of power supply; the voltage stabilization and isolation module outputs required voltage in a voltage stabilization mode through a DC-DC converter, and electrical isolation is achieved through an optocoupler. The output and protection module supplies stable electric energy to the thermal imaging camera, provides multiple protection functions of overcurrent, overvoltage, short circuit and the like, and ensures safe and reliable operation of the system in an underground flammable and explosive environment of a coal mine.

Description

Technical Field

[0001] The invention relates to the field of underground coal mine monitoring, in particular to a power supply system for a mine-used intrinsically safe thermal imaging camera. Background Art

[0002] In order to monitor the temperature changes of coal seams and the operating status of equipment in real time, and to promptly discover safety hazards such as spontaneous combustion of coal seams, overheating of mechanical equipment, and abnormal friction of conveyor belts, it is necessary to install thermal imaging cameras on the coal mining face. Through continuous monitoring by the thermal imaging system, it is possible to identify temperature anomalies during the cutting process of the coal mining machine, and to warn of the possible accumulation of coal dust and friction fire risks. At the same time, the temperature status of key equipment such as support movement and transfer machine operation is tracked in real time to form a complete temperature distribution map, providing reliable early warning protection for safe production on the working face. The system can also provide early warning information through temperature field changes in abnormal situations such as gas outbursts and roof pressure changes, effectively improving the inherent safety level of the coal mining face.

[0003] At present, thermal imaging cameras installed on coal mining faces mainly use soft cable power supply, and the cables are fixed on the tunnel wall or bracket. However, the mining face environment is special and complex: equipment is dense, space is limited, mechanical vibration is frequent, and there are a large number of mobile devices. Coal mining machines and other equipment will generate electromagnetic interference during operation, which can easily affect the normal operation of surrounding power supply lines and even cause damage. As the working face continues to advance, the power supply lines need to be continuously extended and adjusted, which greatly increases the complexity and maintenance difficulty of the power supply system. At the mining face, the excavation equipment will generate continuous mechanical vibrations during operation, and these vibration energies are usually wasted.

[0004] In the patent application with application number CN202210350406.7, a vibration source micro piezoelectric generator device for mining is disclosed, which is provided with a vibration source piezoelectric power generation component, a voltage conversion circuit, a charging protection circuit, an energy storage device and a discharge protection circuit. The voltage conversion circuit converts the voltage generated by the vibration of the vibration source piezoelectric power generation component into the required voltage, charges the energy storage device through the charging protection circuit, and finally outputs it to the internal circuit board of the instrument through the discharge protection circuit; the vibration source generator can collect the wasted mechanical energy in the space, convert part of the invalid energy into effective energy, and also conform to the environmental protection policy of recycling and reuse. In addition, the generator has a small diameter, and the purpose of being universal in drill rods of various specifications can be achieved by changing the length of the support column. In summary, the vibration source piezoelectric generator is an urgently needed technology in coal mines. The application of the generator can effectively improve the efficiency of drilling construction and indirectly improve the production efficiency and economic benefits of coal mines.

[0005] The above patent converts the energy generated by the vibration of the drilling rig into electrical energy through the piezoelectric effect, so that the wireless measurement while drilling system changes from a limited number of working days restricted by MA to a continuous "perpetual motion" working mode. However, piezoelectric materials are brittle and have poor fatigue resistance, and are easily damaged in the harsh environment of coal mines. Summary of the invention

[0006] The purpose of the present invention is to provide a power supply system for an intrinsically safe thermal imaging camera for use in mines, which is used to solve the problem in the prior art that the energy generated by the vibration of the drilling rig is converted into electrical energy through the piezoelectric effect, so that the wireless measurement while drilling system changes from a limited number of working days restricted by MA to a continuous "perpetual motion" working mode. However, the piezoelectric material is brittle and has poor fatigue resistance, and is easily damaged in the harsh environment of a coal mine.

[0007] The technical solution adopted by the present invention is as follows: the power supply system of the intrinsically safe thermal imaging camera for mining includes a power generation module connected to the underground equipment, and the power generation module is connected to the rectifier module, the energy storage management module, the voltage stabilization isolation module and the output protection module in sequence;

[0008] The power generation module is connected to the downhole equipment and is used to generate a DC power supply by utilizing the vibration of the downhole equipment;

[0009] The rectifier module includes a Zener safety barrier, an intrinsically safe rectifier and a filter circuit;

[0010] The energy storage management module includes an energy storage manager, an intrinsically safe energy storage unit and a balancing circuit;

[0011] The voltage stabilizing isolation module includes a DC-DC converter, an optocoupler isolation circuit and a current limiting protection circuit;

[0012] The output protection module includes an explosion-proof junction box, a fault monitoring circuit and a protection circuit.

[0013] The power generation module includes an energy taking structure, an energy conversion structure, an energy transmission structure, an energy collection structure, an energy storage structure, a DC generator, a mounting box and a positioning mounting cylinder;

[0014] An energy extraction structure is arranged in the positioning installation cylinder, and an installation box is sleeved on the outer side of the upper end of the positioning installation cylinder;

[0015] The installation box is provided with a first partition and a second partition in sequence from top to bottom. The first partition and the second partition divide the installation box into a first installation cavity, a second installation cavity and a third installation cavity from top to bottom. The third installation cavity is provided with the energy conversion structure in a circular array with the axis of the positioning installation cylinder as the center. The second cavity is provided with an energy collection structure at the center position. The energy transmission structure in a circular array with the axis of the positioning installation cylinder as the center is also provided on the outside of the energy collection structure. The first cavity is provided with an energy storage structure. A DC generator is provided above the installation box.

[0016] Furthermore, the energy extraction structure includes an energy guiding rod, an energy guiding tube, a ball head cover and a ball head;

[0017] The energy guiding tube is arranged in the positioning and mounting tube along the same axis, the ball head is arranged at the lower end of the energy guiding tube, the ball head cover is arranged outside the ball head, the ball head cover is fixed on the positioning and mounting tube, the energy guiding rod is arranged along the radial direction at the upper end of the energy guiding tube, and the end of the energy guiding rod away from the energy guiding tube is fixed on the downhole equipment.

[0018] Furthermore, the energy conversion structure includes a push rod, a first compression spring, a rack and a gear;

[0019] One end of the push rod is against the energy conducting cylinder, and the other end of the push rod passes through the positioning and mounting cylinder and extends to the third cavity where the rack is installed. The rack is meshed with the gear, and the gear is installed on the lower half shaft. The lower end of the lower half shaft is fixed to the bottom wall of the mounting box, and the upper end of the lower half shaft passes through the second partition and extends into the second cavity and is connected to the energy transmission structure. The first compression spring is sleeved on the outer side of one end of the push rod away from the rack, and one end of the first compression spring close to the energy conducting cylinder is fixed to the push rod, and the other end is fixed to the inner wall of the positioning and mounting cylinder.

[0020] Furthermore, the end of the push rod close to the energy conducting cylinder is spherical.

[0021] Furthermore, a clutch structure is provided between the energy conversion structure and the energy transmission structure;

[0022] The clutch structure includes a connecting rod, a wedge block, a lower pull rod, a lower pull frame, a swing frame, a support rod, a shift fork, a spline sleeve, a second compression spring, the upper end of the lower half shaft and the lower end of the energy transmission gear are both provided with a spline groove, the spline sleeve is arranged on the outer side of the spline section of the lower half shaft, the shift fork is arranged on the outer side of the spline sleeve, the shift fork is in a Y shape, the open end of the shift fork is rotatably connected with the spline sleeve, the outer side of the other end of the shift fork passes through between the support rods and extends to between the U-shaped swing frames and is connected through a pin shaft, the lower end of the swing frame is connected to the lower pull rod, the lower end of the lower pull rod passes through the second partition and is connected to the lower pull frame which is also in a U shape, a pin shaft is arranged between the lower pull frames, the wedge block is arranged between the pin shaft and the web plate of the lower pull frame, the lower part of the wedge block is an inclined surface, the other end of the wedge block is connected to the rack through a Z-shaped connecting rod, a second compression spring is arranged between the lower pull rod and the swing frame, the upper end of the second compression spring is fixed on the lower pull rod, and the lower end of the second compression spring is fixed on the second partition.

[0023] Furthermore, an arc-shaped groove is provided at the contact point between the energy guiding cylinder and the end of the push rod.

[0024] Furthermore, the energy transmission structure includes an energy transmission shaft and an energy transmission gear. The upper end of the energy transmission shaft is installed on the first partition plate, the lower end of the energy transmission shaft is connected to the lower half shaft, and the energy transmission gear is installed on the energy transmission shaft.

[0025] Furthermore, the energy collecting structure includes an energy collecting shaft and an energy collecting gear. A plurality of the energy collecting gears are installed on the energy collecting shaft from bottom to top. The number of the energy collecting gears is consistent with the number of the energy conversion structure and the energy transmission structure. The energy collecting gears are meshed with the energy transmission gears, and the installation height of each energy transmission gear increases sequentially in a clockwise direction.

[0026] Furthermore, a limiting block is arranged after one end of the wedge block passes through the pull-down frame.

[0027] Furthermore, the ratchet is installed after the energy-collecting shaft passes through the second partition plate, the ratchet side is installed with the pawl meshing with it, the electromagnet is installed on the side of the pawl away from the ratchet, the pawl is installed with an armature corresponding to the electromagnet, the inner end of the coil spring is fixed on the energy-collecting shaft, the outer end of the coil spring is fixed on the ratchet, the driving gear is coaxially installed above the ratchet, the input shaft of the DC generator passes through the top wall of the installation box, and the driven gear is installed, and the driving gear and the driven gear are meshed.

[0028] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0029] 1. The energy-taking structure described in the present invention is connected to the underground equipment and receives the vibration generated by the underground equipment when it is working. After receiving the vibration of the underground equipment, the energy-taking structure drives the energy conversion structure on its outer side. The energy conversion structure drives the energy collection structure between the energy transmission structure through the energy transmission structure coaxially arranged with it to store energy. The energy collection structure releases energy at a fixed time, drives the DC generator to generate electric energy, and limits, rectifies and filters the unstable electric energy generated by the DC generator through the rectifier module to output smooth DC power; the energy storage and management module stores and manages the charge and discharge of electric energy to ensure the continuity and stability of power supply; the voltage stabilization and isolation module outputs the required voltage through the DC-DC converter, and realizes electrical isolation through the optical coupler; the output and protection module supplies stable electric energy to the thermal imaging camera, and provides multiple protection functions such as overcurrent, overvoltage, short circuit, etc. to ensure the safe and reliable operation of the system in the flammable and explosive environment underground in the coal mine;

[0030] 2. The end of the push rod close to the energy guide cylinder in the present invention is spherical, and point contact or line contact can be achieved when the two are in contact, which has good adaptability and can compensate for installation errors and angle deviations; at the same time, the spherical end significantly reduces friction resistance and wear through rolling contact, and can evenly disperse and transmit the thrust to avoid stress concentration and effectively reduce impact loads, thereby ensuring a smooth and reliable pushing process, extending the service life of the mechanism, and making assembly and maintenance more convenient;

[0031] 3. In order to avoid interference caused by multiple energy transmission gears driving a single energy collecting gear, multiple energy collecting gears are installed on the energy collecting shaft from bottom to top, and the energy transmission gear drives the energy collecting gear with the same installation height to rotate.

[0032] 4. In the present invention, if the DC generator is driven to rotate directly by the energy-collecting shaft, since the energy-collecting shaft is driven by various energy-collecting gears, and the energy-collecting gears can only obtain the power of rotation when the energy-conducting cylinder pushes the push rod, the final rotation frequency of the energy-collecting shaft is not stable enough. Therefore, an energy storage structure is provided to absorb and store the unstable kinetic energy of the energy-collecting shaft by utilizing the elastic deformation characteristics of the coil spring, so as to play a buffering and smoothing role, convert the uneven rotation speed into a relatively stable output, and effectively reduce the impact load on the DC generator;

[0033] 5. When the energy conversion structure loses the push of the energy guide cylinder, the compressed second compression spring pushes the lower pull rod upward, so that the shift fork that was originally swinging counterclockwise is reset, so that the spline sleeve continues to be only mounted on the outside of the spline section of the lower half shaft. Therefore, the energy conversion structure and the energy transmission structure are combined only when there is power. When there is no power between the two, the torque will not be transmitted, avoiding unnecessary power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the power generation module in the present invention;

[0036] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0037] Figure 4 yes Figure 2 Sectional view at AA in the middle;

[0038] Figure 5 yes Figure 2 Sectional view at AA in the middle;

[0039] Figure 6 yes Figure 2 A partial enlarged view of point D in the middle;

[0040] Figure 7 It is a top view of the shift fork in the present invention.

[0041] Description of reference numerals:

[0042] a. Power generation module; b. Rectification module; c. Energy storage management module; d. Voltage stabilization isolation module; e. Output protection module; 1. Energy extraction structure; 11. Energy guide rod; 12. Energy guide tube; 13. Ball head cover; 14. Ball head; 2. Energy conversion structure; 21. Push rod; 22. First compression spring; 23. Rack; 24. Gear; 3. Clutch structure; 31. Connecting rod; 32. Wedge block; 33. Lower pull rod; 34. Lower pull frame; 35. Swing frame; 36. Support rod ; 38. Fork; 39. Spline sleeve; 310. Second compression spring; 4. Energy transmission structure; 41. Energy transmission shaft; 42. Energy transmission gear; 5. Energy collection structure; 51. Energy collection shaft; 52. Energy collection gear; 6. Energy storage structure; 61. Ratchet; 62. Coil spring; 63. Ratchet; 64. Electromagnet; 65. Driving gear; 66. Driven gear; 7. DC generator; 8. Installation box; 81. First partition; 82. Second partition; 9. Positioning installation cylinder. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Example 1

[0049] Figure 1-Figure 7 As shown: the power supply system of the intrinsically safe thermal imaging camera for mining includes a power generation module a connected to the underground equipment, and the power generation module a is connected to the rectifier module b, the energy storage management module c, the voltage stabilizing isolation module d and the output protection module e in sequence.

[0050] The power generation module a is connected to the downhole equipment and is used to generate a DC power supply by utilizing the vibration of the downhole equipment;

[0051] The rectifier module b is used to perform primary processing on the unstable electric energy generated by the power generation module a and output stable direct current, including a Zener safety barrier, an intrinsically safe rectifier and a filter circuit;

[0052] The energy storage management module c is used for energy storage and management to ensure that the power supply system of the thermal imaging camera can continue to supply power when the power generation is unstable, and includes an energy storage manager, an intrinsically safe energy storage unit and a balancing circuit;

[0053] The voltage stabilizing isolation module d is used to stabilize and electrically isolate the electric energy output by the energy storage module and provide a stable working voltage, including a DC-DC converter, an optocoupler isolation circuit and a current limiting protection circuit;

[0054] The output protection module e is used to output stable electric energy to the thermal imaging camera and provide protection functions such as short circuit and overcurrent, including an explosion-proof junction box, a fault monitoring circuit and a protection circuit.

[0055] The power generation module a includes an energy taking structure 1, an energy conversion structure 2, an energy transmission structure 4, an energy collecting structure 5, an energy storage structure 6, a DC generator 7, an installation box 8 and a positioning installation cylinder 9;

[0056] An energy extraction structure 1 is arranged in the positioning installation cylinder 9, and an installation box 8 is sleeved on the outer side of the upper end of the positioning installation cylinder 9;

[0057] The first partition plate 81 and the second partition plate 82 are sequentially arranged in the installation box 8 from top to bottom. The first partition plate 81 and the second partition plate 82 divide the installation box 8 from top to bottom into a first installation cavity, a second installation cavity and a third installation cavity. The third installation cavity is provided with a transducer structure 2 in a circular array with the axis of the positioning installation cylinder 9 as the center. The energy collection structure 5 is installed at the center of the second cavity. The energy transmission structure 4 in a circular array with the axis of the positioning installation cylinder 9 as the center is also arranged outside the energy collection structure 5. The energy storage structure 6 is arranged in the first cavity. A DC generator 7 is arranged above the installation box 8.

[0058] The energy-taking structure 1 is connected to the downhole equipment and receives the vibration generated when the downhole equipment is working. After receiving the vibration of the downhole equipment, the energy-taking structure 1 drives the energy conversion structure 2 on its outside. The energy conversion structure 2 drives the energy collection structure 5 between the energy transmission structure 4 through the energy transmission structure 4 coaxially arranged therewith to store energy. The energy collection structure 5 releases the energy at a fixed time to drive the DC generator 7 to generate electrical energy.

[0059] The energy extraction structure 1 comprises an energy guiding rod 11, an energy guiding tube 12, a ball head cover 13 and a ball head 14;

[0060] The energy guiding cylinder 12 is arranged in the positioning installation cylinder 9 along the same axis, a ball head 14 is arranged at the lower end of the energy guiding cylinder 12, a ball head cover 13 is arranged outside the ball head 14, and the ball head cover 13 is fixed on the positioning installation cylinder 9. An energy guiding rod 11 is arranged along the radial direction at the upper end of the energy guiding cylinder 12, and one end of the energy guiding rod 11 away from the energy guiding cylinder 12 is fixed on the downhole equipment;

[0061] An arc-shaped depression is provided at the contact point between the energy conducting cylinder 12 and the end of the push rod 21 to prevent the push rod 21 from being misplaced during the process of pushing the push rod 21 .

[0062] The vibration generated by the downhole equipment is transmitted to the energy guiding tube 12 through the energy guiding rod 11, driving the energy guiding tube 12 to shake irregularly around the ball head cover 13. When the energy guiding tube 12 shakes, it pushes the energy conversion structure 2 outside it to move.

[0063] The energy conversion structure 2 includes a push rod 21, a first compression spring 22, a rack 23 and a gear 24;

[0064] One end of the push rod 21 rests on the energy conducting cylinder 12, and the other end of the push rod 21 passes through the positioning and mounting cylinder 9 and extends to the third cavity where a rack 23 is installed. The rack 23 is meshed with a gear 24, and the gear 24 is installed on the lower half shaft. The lower end of the lower half shaft is fixed to the bottom wall of the mounting box 8, and the upper end of the lower half shaft passes through the second partition plate 82 and extends into the second cavity and is connected to the energy transmission structure 4. A first compression spring 22 is sleeved on the outer side of one end of the push rod 21 away from the rack 23, and one end of the first compression spring 22 close to the energy conducting cylinder 12 is fixed to the push rod 21, and the other end is fixed to the inner wall of the positioning and mounting cylinder 9.

[0065] The end of the push rod 21 close to the energy guiding cylinder 12 is spherical, and can achieve point contact or line contact when the two are in contact. It has good adaptability and can compensate for installation errors and angular deviations. At the same time, the spherical end significantly reduces friction resistance and wear through rolling contact, and can evenly disperse and transmit the thrust to avoid stress concentration and effectively reduce impact loads, thereby ensuring a smooth and reliable pushing process, extending the service life of the mechanism, and making assembly and maintenance more convenient.

[0066] When the energy guiding cylinder 12 shakes, it pushes the push rod 21 to move outward along the meridian direction. When the push rod 21 moves, it stretches the first compression spring 22 and drives the rack 23 to move radially, thereby driving the gear 24 to rotate, thereby driving the energy transmission structure 4 through the lower half shaft. When the energy guiding cylinder 12 shakes in other directions, the push rod 21 loses the push of the energy guiding cylinder 12, and the stretched first compression spring 22 drives the push rod 21 to reset. In order to prevent the rack 23 from continuing to drive the gear 24 to rotate when the push rod 21 resets, the gear 24 is installed on the lower half shaft through a one-way bearing.

[0067] The energy transmission structure 4 includes an energy transmission shaft 41 and an energy transmission gear 42 . The upper end of the energy transmission shaft 41 is mounted on the first partition plate 81 , the lower end of the energy transmission shaft 41 is connected to the lower half shaft, and the energy transmission gear 42 is mounted on the energy transmission shaft 41 .

[0068] The energy collecting structure 5 includes an energy collecting shaft 51 and an energy collecting gear 52. A plurality of energy collecting gears 52 are installed on the energy collecting shaft 51 from bottom to top. The number of the energy collecting gears 52 is consistent with the number of the energy conversion structure 2 and the energy transmission structure 4. The energy collecting gears 52 are meshed with the energy transmission gears 42. The installation height of each energy transmission gear 42 increases in sequence in the clockwise direction.

[0069] When the gear 24 rotates, it drives the energy transmission shaft 41 to rotate through the lower half shaft. When the energy transmission shaft 41 rotates, it drives the energy collecting gear 52 to rotate through the energy transmission gear 42. Since the energy guiding cylinder 12 will shake in multiple directions, the energy conversion structures 2 arranged in a circular array on its outer side will be pushed thereby to drive the energy transmission structure 4. In order to avoid interference caused by multiple energy transmission gears 42 driving a single energy collecting gear 52, multiple energy collecting gears 52 are installed on the energy collecting shaft 51 from bottom to top. The energy transmission gear 42 drives the energy collecting gear 52 with the same installation height to rotate, thereby driving the energy collecting shaft 51 to rotate.

[0070] The ratchet 61 is installed after the energy-huining shaft 51 passes through the second partition plate 82, and a pawl 63 meshing with the ratchet 61 is installed on the side of the ratchet 61. An electromagnet 64 is installed on the side of the pawl 63 away from the ratchet 61, and an armature corresponding to the electromagnet 64 is installed on the pawl 63. The inner end of the coil spring 62 is fixed on the energy-huining shaft 51, and the outer end of the coil spring 62 is fixed on the ratchet 61. A driving gear 65 is coaxially installed above the ratchet 61. The input shaft of the DC generator 7 passes through the top wall of the mounting box 8 and a driven gear 66 is installed, and the driving gear 65 and the driven gear 66 are meshed.

[0071] When the energy-collecting shaft 51 drives the ratchet 61 to rotate, it also drives the inner end of the coil spring 62 to rotate. The coil spring 62 gradually tightens to store energy, and the pawl 63 is prevented from being released in the reverse direction. By controlling the electromagnet 64 to be energized, suction is generated to drive the pawl 63 to swing, and the limit of the pawl 63 is lost. The ratchet 61 rotates under the action of the coil spring 62, and drives the driving gear 65 to rotate through the driven gear 66, thereby finally driving the DC generator 7 to generate electrical energy.

[0072] If the DC generator 7 is driven to rotate directly by the energy collecting shaft 51, since the energy collecting shaft 51 is driven by the energy collecting gears 52, and the energy collecting gears 52 can only obtain the power to rotate when the energy guiding cylinder 12 pushes the push rod 21, the final rotation frequency of the energy collecting shaft 51 is not stable enough. Therefore, an energy storage structure 6 is provided to utilize the elastic deformation characteristics of the coil spring 62 to absorb and store the unstable kinetic energy of the energy collecting shaft 51, thereby playing a buffering and smoothing role, converting the uneven rotation speed into a relatively stable output, and effectively reducing the impact load on the DC generator 7.

[0073] Example 2

[0074] The difference between this embodiment and embodiment 1 is that a clutch structure 3 is arranged between the energy conversion structure 2 and the energy transmission structure 4. Since the energy transmission gear 42 is meshed with the energy collecting gear 52, the energy transmission gear 42 can not only drive the energy collecting gear 52 to rotate, but also the energy transmission gear 42 in other directions will drive the energy collecting gear 52 to rotate, and then drive the gear 24 to rotate through the energy transmission shaft 41. When the gear 24 rotates, it will also drive the rack 23 and the push rod 21 to move, thereby generating unnecessary power consumption. Therefore, a clutch structure 3 is arranged between the energy conversion structure 2 and the energy transmission structure 4 to separate the energy conversion structure 2 and the energy transmission structure 4 that have lost power.

[0075] The clutch structure 3 includes a connecting rod 31, a wedge block 32, a lower pull rod 33, a lower pull frame 34, a swing frame 35, a support rod 36, a shift fork 38, a spline sleeve 39 and a second compression spring 310. The upper end of the lower half shaft and the lower end of the energy transmission gear 42 are both provided with a spline groove. The spline sleeve 39 is sleeved on the outer side of the spline section of the lower half shaft. A shift fork 38 is provided on the outer side of the spline sleeve 39. The shift fork 38 is Y-shaped. The open end of the shift fork 38 is rotatably connected to the spline sleeve 39. The outer side of the other end of the shift fork 38 passes through between the support rods 36 and extends to between the U-shaped swing frames 35 and is connected through a pin shaft. The lower end of the swing frame 35 is connected to the lower pull rod 33. The lower end of the rod 33 passes through the second partition 82 and is connected to a lower pull-down frame 34 which is also U-shaped. A pin is provided between the lower pull-down frames 34. A wedge 32 is provided between the pin and the web of the lower pull-down frame 34. The lower part of the wedge 32 is an inclined surface. A limit block is provided after one end of the wedge 32 passes through the lower pull-down frame 34 to prevent the wedge 32 from falling out of the middle of the lower pull-down frame 34. The other end of the wedge 32 is connected to the rack 23 through a Z-shaped connecting rod 31. A second compression spring 310 is provided between the lower pull-down rod 33 and the swing frame 35. The upper end of the second compression spring 310 is fixed to the lower pull-down rod 33, and the lower end of the second compression spring 310 is fixed to the second partition 82.

[0076] Under normal conditions, the spline sleeve 39 is only sleeved on the outer side of the spline section of the lower half shaft. When the rack 23 is pushed to drive the gear 24 to rotate, the rack 23 pushes the wedge block 32 to move through the connecting rod 31. The lower part of the wedge block 32 is inclined, so during its movement, it will pull the lower pull frame 34 downward and compress the second compression spring 310. In order to reduce the friction between the two, a pin is provided between the lower pull frame 34. During the downward movement of the lower pull frame 34, the shift fork 38 is pulled to swing counterclockwise around the pin between it and the support rod 36, so that it can rotate. The spline sleeve 39 at one end moves upward to connect the spline groove on the lower half shaft and the energy transmission gear 42 to realize the transmission of torque. When the energy conversion structure 2 loses the push of the energy guide cylinder 12, the compressed second compression spring 310 pushes the lower pull rod 33 upward to reset the shift fork 38 that was originally swinging counterclockwise, so that the spline sleeve 39 continues to be only mounted on the outside of the spline section of the lower half shaft. Therefore, the energy conversion structure 2 and the energy transmission structure 4 are combined only when there is power. When there is no power between the two, the torque will not be transmitted, avoiding unnecessary power consumption.

[0077] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A power supply system for a mine intrinsically safe thermal imaging camera, comprising a power generation module (a) connected to underground equipment, wherein the power generation module (a) is connected in sequence to a rectifier module (b), an energy storage management module (c), a voltage stabilization isolation module (d) and an output protection module (e); The power generation module (a) is connected to the downhole equipment and is used to generate a DC power supply by utilizing the vibration of the downhole equipment; The rectifier module (b) comprises a Zener safety barrier, an intrinsically safe rectifier and a filter circuit; The energy storage management module (c) includes an energy storage manager, an intrinsically safe energy storage unit and a balancing circuit; The voltage stabilizing isolation module (d) comprises a DC-DC converter, an optocoupler isolation circuit and a current limiting protection circuit; The output protection module (e) comprises an explosion-proof junction box, a fault monitoring circuit and a protection circuit. The power generation module (a) comprises an energy taking structure (1), an energy conversion structure (2), an energy transmission structure (4), an energy collecting structure (5), an energy storage structure (6), a DC generator (7), an installation box (8) and a positioning installation cylinder (9); An energy extraction structure (1) is arranged in the positioning installation cylinder (9), and an installation box (8) is sleeved on the outer side of the upper end of the positioning installation cylinder (9); The installation box (8) is provided with a first partition plate (81) and a second partition plate (82) in sequence from top to bottom. The first partition plate (81) and the second partition plate (82) divide the installation box (8) from top to bottom into a first installation cavity, a second installation cavity and a third installation cavity. The third installation cavity is provided with the energy conversion structure (2) in a circular array with the axis of the positioning installation cylinder (9) as the center. The second cavity is provided with an energy collection structure (5) at the center. The energy transmission structure (4) in a circular array with the axis of the positioning installation cylinder (9) as the center is also provided on the outside of the energy collection structure (5). The first cavity is provided with an energy storage structure (6). A DC generator (7) is provided above the installation box (8).

2. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 1 is characterized in that: The energy extraction structure (1) comprises an energy guiding rod (11), an energy guiding tube (12), a ball head cover (13) and a ball head (14); The energy guiding cylinder (12) is arranged in the positioning installation cylinder (9) along the same axis, the ball head (14) is arranged at the lower end of the energy guiding cylinder (12), the ball head cover (13) is arranged outside the ball head (14), the ball head cover (13) is fixed on the positioning installation cylinder (9), the energy guiding rod (11) is arranged at the upper end of the energy guiding cylinder (12) along the radial direction, and the end of the energy guiding rod (11) away from the energy guiding cylinder (12) is fixed on the downhole equipment.

3. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 2 is characterized in that: The energy conversion structure (2) comprises a push rod (21), a first compression spring (22), a rack (23) and a gear (24); One end of the push rod (21) is against the energy conducting cylinder (12), and the other end of the push rod (21) passes through the positioning installation cylinder (9) and extends to the third cavity where the rack (23) is installed. The rack (23) is meshed with the gear (24), and the gear (24) is installed on the lower half shaft. The lower end of the lower half shaft is fixed to the bottom wall of the installation box (8), and the upper end of the lower half shaft passes through the second partition plate (82) and extends to the second cavity where it is connected to the energy transmission structure (4). The first compression spring (22) is sleeved on the outer side of one end of the push rod (21) away from the rack (23), and one end of the first compression spring (22) close to the energy conducting cylinder (12) is fixed to the push rod (21), and the other end is fixed to the inner wall of the positioning installation cylinder (9).

4. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 3 is characterized in that: The end of the push rod (21) close to the energy conducting cylinder (12) is spherical.

5. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 4 is characterized in that: A clutch structure (3) is provided between the energy conversion structure (2) and the energy transmission structure (4); The clutch structure (3) comprises a connecting rod (31), a wedge block (32), a lower pull rod (33), a lower pull frame (34), a swing frame (35), a support rod (36), a shift fork (38), a spline sleeve (39) and a second compression spring (310). The upper end of the lower half shaft and the lower end of the energy transmission gear (42) are both provided with a spline groove. The spline sleeve (39) is sleeved on the outer side of the spline section of the lower half shaft. The shift fork (38) is provided on the outer side of the spline sleeve (39). The shift fork (38) is Y-shaped. The open end of the shift fork (38) is rotatably connected to the spline sleeve (39). The outer side of the other end of the shift fork (38) passes through between the support rods (36) and then extends to between the U-shaped swing frame (35) and passes through the spline sleeve (39). The lower end of the swing frame (35) is connected to the lower pull rod (33) through a pin shaft, and the lower end of the lower pull rod (33) passes through the second partition (82) and is connected to a lower pull frame (34) which is also U-shaped. A pin shaft is arranged between the lower pull frame (34), and the wedge block (32) is arranged between the pin shaft and the web of the lower pull frame (34). The lower part of the wedge block (32) is an inclined surface, and the other end of the wedge block (32) is connected to the rack (23) through a Z-shaped connecting rod (31). A second compression spring (310) is arranged between the lower pull rod (33) and the swing frame (35), and the upper end of the second compression spring (310) is fixed on the lower pull rod (33), and the lower end of the second compression spring (310) is fixed on the second partition (82).

6. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 5 is characterized in that: An arc-shaped groove is provided at the contact point between the energy-conducting cylinder (12) and the end of the push rod (21).

7. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 6 is characterized in that: The energy transmission structure (4) comprises an energy transmission shaft (41) and an energy transmission gear (42); the upper end of the energy transmission shaft (41) is mounted on the first partition plate (81); the lower end of the energy transmission shaft (41) is connected to the lower half shaft; and the energy transmission gear (42) is mounted on the energy transmission shaft (41).

8. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 7 is characterized in that: The energy collecting structure (5) comprises an energy collecting rotating shaft (51) and an energy collecting gear (52). A plurality of energy collecting gears (52) are mounted on the energy collecting rotating shaft (51) from bottom to top. The number of the energy collecting gears (52) is consistent with the number of the energy conversion structure (2) and the energy transmission structure (4). The energy collecting gear (52) is meshed with the energy transmission gear (42). The installation height of each energy transmission gear (42) increases in sequence in a clockwise direction.

9. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 8 is characterized in that: One end of the wedge block (32) passes through the lower pull-down frame (34) and is provided with a limit block.

10. The power supply system of the intrinsically safe thermal imaging camera for mining according to claim 9 is characterized in that: The energy collecting shaft (51) passes through the second partition plate (82) and then the ratchet (61) is installed. The ratchet (61) is installed on the side of the ratchet (61) and is meshed with the ratchet pawl (63). The electromagnet (64) is installed on the side of the ratchet pawl (63) away from the ratchet (61). The ratchet pawl (63) is installed with an armature corresponding to the electromagnet (64). The inner end of the coil spring (62) is fixed on the energy collecting shaft (51), and the outer end of the coil spring (62) is fixed on the ratchet (61). The driving gear (65) is coaxially installed above the ratchet (61). The input shaft of the DC generator (7) passes through the top wall of the installation box (8) and then the driven gear (66) is installed. The driving gear (65) and the driven gear (66) are meshed.

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