76results about How to "Improve flameproof performance" patented technology

The invention discloses an intelligent high-efficiency electric vehicle traction drive control system and method the same, including a total control system, a first control system, a second control system, a first bidirectional DC / DC converter, a second bidirectional DC / DC converter, inverter. The total control system is respectively connected with the first control system and the second control system. The output terminal of the first control system is respectively connected with the first bidirectional DC / DC converter and the second directional DC / DC converter. The second output of the control system is connected with the inverter. The output of the first bidirectional DC / DC converter and the second bidirectional DC / DC converter are connected with the inverter. The output end of the inverter is connected with the motor vehicle. The intelligent high-efficiency electric vehicle traction drive control system realizes the efficient operation of the motor vehicle and the battery. The organic combination of battery and super capacitor can effectively realize all kinds of special motor vehicle condition, combined with the energy storage function. And the intelligent high-efficiency electric vehicle traction drive control system achieves efficient operation, avoids the waste of energy and achieves energy saving and environmental protection.

The invention relates to a land and submerged high-pressure resistant explosion-proof wire outlet device, which comprises a bed plate, wherein the bottom of the bed plate is provided with a flange inside which an outlet hole is formed; a lead wire has a tapered structure; a tapered high-pressure resistant explosion-proof sealing ring is sleeved in the tapered hole; a jointing face between the bedplate and a wire outlet device of a motor is provided with a high-pressure resistant sealing ring and an explosion-proof face; a flange cover is fixed on the upper part of the bed plate; and the part, outside an outlet, of an outgoing line is sleeved with a high pressure sealed hose. The high-pressure resistant explosion-proof wire outlet device has a rational structural design, high sealing properties, high pressure resistance and explosion-proof performance, is quick and convenient to wire, can effectively fulfill the aim of sealing the outgoing line and bear the water pressure of 8MPa without leakage to achieve good sealing effects, and is particularly suitable for use in explosion-proof occasions with high pressure media.

The invention discloses a flame-proof switch which comprises a shell and a conversion switch, wherein the conversion switch is arranged in the shell and is provided with a wiring terminal, the wiring terminal is provided with an outgoing lead which extends outside the shell, one end of the conversion switch is provided with a switch connecting shaft, an operation device is arranged at one end of the switch connecting shaft, which is far from the conversion switch, the switch connecting shaft passes through one end of the shell, and a sealing piece is arranged at one end of the shell, which is far from the switch connecting shaft. The flame-proof switch is capable of realizing leading outage so as to cut off power before a cover is opened; moreover, sparks generated when the switch is in use are all in a switch protective shell and cannot be transferred to a wiring cavity of equipment to form an ignition source. In addition, the flame-proof switch has the advantages of simple operation, convenience in installation and reliable casting.

The present invention relates to an explosion-proof sheath for a wire and a cable and a manufacturing method thereof. The explosion-proof sheath is formed by bonding an aluminum alloy matrix material and a stainless steel round tube by a ceramic high temperature resistant adhesive. At the time of manufacture, the explosion-proof sheath is obtained by aluminum alloy melt preparation, aluminum alloy melt foaming processing, aluminum alloy matrix material molding, ceramic high temperature resistant adhesive preparation, nano microporous aluminum alloy matrix material and stainless steel tube composition. According to the explosion-proof sheath, the mechanical performance of the metal sheath is greatly improved, the high temperature resistant ability of the metal sheath is improved obviously, the ability of thermal shock resistance of the metal sheath in a high temperature explosion environment is greatly improved, the flameproof performance of the wire and cable is improved significantly, and the application of the wire and cable is safe.

The invention discloses a composite explosion-proof three-phase asynchronous motor comprising a base, a stator installed in the base, and a rotor in a clearance fit relationship with the stator. The rotor is fixedly installed at a rotating shaft. End covers are arranged at the front end and the rear end of the base correspondingly and respectively; bearings are arranged between the end covers and the rotating shaft; and inner bearing covers and outer bearing covers are arranged at the inner sides and the outer sides of the bearings respectively. Explosion-proof structures for preventing combustible dust from entering a bearing chamber or a motor are arranged at cooperation parts between the outer bearing covers and the rotating shaft and consist of oil sealing elements and first explosion-proof connection surfaces; the oil sealing elements sleeving the rotating shat are in an interference fit relationship with the rotating shaft; and the first explosion-proof connection surfaces arranged at the inner sides of the oil sealing elements are formed in the cooperation parts between the outer bearing covers and the rotating shaft. Second explosion-proof connection surfaces are formed at the cooperation parts between the inner bearing covers and the base and the cooperation parts between the end covers and the base. Third explosion-proof connection surfaces are formed at the cooperation parts between the inner bearing covers and the rotating shaft. The composite explosion-proof three-phase asynchronous motor has high reliability; dust explosion-proof and gas explosion-proof requirements are met; and thus the equipment can work safely.

The invention relates to the field of explosive-proof equipment, in particular to a dust backpressure explosive-proof valve. The dust backpressure explosive-proof valve comprises a valve body and a valve disk. An inclined end face is integrally and fixedly installed in the valve body, the valve disk is fixedly connected with a valve disk rocker, a positioning shaft is fixedly arranged at the upper end of the valve disk rocker, a limiting plate is fixedly installed on one side of the inclined end face, and the positioning shaft is connected with a transmission device installed outside the valve body. A valve cover is fixedly connected with the valve body, and a sealing gasket is installed at the position, making contact with the valve body, on the valve cover. A detonation or an explosion occurs on the outlet side of the explosive-proof valve, as the backpressure is increased, air flow flows in the reverse direction, the backpressure valve disk is closed, the pressure wave produced by the explosion will enable the valve disk to be closed to the inclined end face on the inlet side, the explosion is prevented from being transmitted to an upstream pipeline and equipment, and an isolation effect is achieved.

The invention relates to an overhead anti-explosion air conditioner. An air conditioner shell is arranged on a top plate of a cabin and internally and successively provided with an evaporator, a centrifugal fan, a totally closed rotary compressor, an anti-explosion motor, an anti-explosion line control box, an axial fan and a condenser, wherein an air outlet return panel is arranged below the top plate of the cabin; an air outlet of the air outlet return panel is communicated with an air return inlet of the air outlet return panel through an air outlet tube, the centrifugal fan and the evaporator successively; and the cable joints of the evaporator, the condenser, the totally closed rotary compressor, the anti-explosion motor and the anti-explosion electric control box are encapsulated by anti-explosion glue. The anti-explosion air conditioner is reasonable in structural design and high in protection level, can effectively prevent electric spark, arc light or dangerous temperature, avoids combustion or explosion accidents, improves the explosive-proof effect of the air conditioner, ensures the safe use of the air conditioner, and is suitable for oil drilling, chemical engineering and ambient temperature regulation of various occasions with combustible and explosive substances and gas.

The invention discloses a mining explosion-proof latch with a low voltage. The latch comprises a male inserted rod, a male inserted rod insulating base, a mother rod base, a mother rod base insulating base and an explosion-proof outer sleeve. The male inserted rod is arranged on the male inserted rod insulating base; and the mother rod base is arranged in the mother rod base insulating base. One end of the male inserted rod extruded outside the male inserted rod insulating base and is plugged with one end of the mother rod base; and the other ends of the male inserted rod and the mother rod base are used as terminals; and besides, the explosion-proof outer sleeve enables the male inserted rod insulating base and the mother rod base insulating base to be encompassed inside it. According to the invention, the mining explosion-proof latch with a low voltage is mainly used a cable introduction apparatus of a mining explosion-proof vulcanizer with an electric heating type; and problems of water leakage, electric leakage and production of spark during the using process of a current mining explosion-proof vulcanizer with an electric heating type and a wiring speed is slow are solved; besides, the provided mining explosion-proof latch has advantages of fast wiring speed, easy disassembly, good explosion-proof performance, and safe and reliable working performances.

The invention provides an explosion-proof device and method, and relates to the technical field of coal mine security. The explosion-proof device comprises a detection device which is used for detecting data for explosion judgement, a control device which is connected with the detection device and is used for obtaining the data and analyzing and judging whether explosion occur or not based on thedata, an explosion-proof water shed which is arranged at an explosion spreading path and comprises a water spraying machine and a switch, wherein the switch is used for controlling starting and stopping of the water spraying machine, the switch is connected with the control device, the control device is further used for controlling switching on and off of the switch based on judgement results, andfurther starting and stopping of the water spraying machine are controlled. According to the explosion-proof device, the explosion effect can be improved, and damage of explosion can be effectively prevented and eliminated.

The invention provides a flameproof electromagnet which comprises a flameproof shell. The flameproof shell is internally provided with a cylindrical cavity; a coil assembly is arranged in the cylindrical cavity; the upper part of the flameproof shell is provided with a flameproof terminal box and a lug boss; the lug boss is provided with a groove; the bottom of the groove is communicated with thecylindrical cavity; sealant is poured into the groove; the flameproof terminal box covers the periphery of the lug boss; the opening of the groove of the lug boss is provided with a terminal plate; the terminal plate is provided with a terminal; and the terminal is connected with the lead of the coil assembly. Compared with a sealing ring, the flameproof electromagnet has low cost and good flameproof effect, is not easy to age and is not easy to fail to seal. The lead of the coil assembly can be directly led on the terminal, the terminal can be externally connected with a power cord, and the lead of the coil assembly can not be restricted in length and is hereby suitable for long-distance control and operation.

The invention discloses an underground artificial intelligence comprehensive substation for a coal mine. The comprehensive substation includes a housing, wherein an intrinsic safety cavity and an explosion-proof cavity are respectively formed in the housing. One side of the intrinsic safety cavity is connected with one side of the explosion-proof cavity through a wall-penetrating terminal. A powersupply assembly, a communication assembly and an artificial intelligence module are fixedly installed in the intrinsic safety cavity, the power supply assembly is electrically connected with the first end of the communication assembly and the artificial intelligence module, the second end of the communication assembly is connected with the artificial intelligence module, and the third end of thecommunication assembly is connected with peripheral equipment through a mining network cable. According to the comprehensive substation, power supply, network coverage and artificial intelligence dataanalysis of input and output equipment in a working area can be provided. An artificial intelligence module is used for carrying out artificial intelligence analysis on video signals of a camera accessed on site and sound information of a sound collector, abnormal conditions are uploaded to a ground machine room through a network, the ground machine room sends back and identifies the abnormal conditions, and information issuing and abnormal reminding can be achieved through an LED screen and a broadcast substation.

The invention relates to the technical field of robots. The invention discloses a quick-release box body of an inspection robot. The box body comprises a box body with an opening in the top and a cover plate covering the opening in the top of the box body, the cover plate is hinged to the box body, transverse partition plates are arranged in a cavity of the box body and divide the box body into aplurality of cavities, all components of the inspection robot are located in the cavities, and the transverse partition plates are hinged to the inner side wall of the box body. The cover plate and the transverse partition plates are hinged to the box body, only the cover plate or the transverse partition plate needs to be turned over during overhaul and maintenance, the cover plate or the transverse partition plate does not need to be completely moved away, time and labor are saved in the operation process, meanwhile, the length of a wire for connecting an element on the cover plate and an element in the box body is shortened, and consumable items are possibly reduced.

A mine under-shaft automatic explosive-suspension device triggered in two directions comprises receiving rod hanging devices, impact wave receiving devices, motion triggering components, transferring rod assemblies, outer-layer sleeve assemblies, air spraying pipe assemblies, middle sleeve assemblies, an outer cover assembly, a pressing sieve assembly, a pressure gauge component and pressure gauge protective cover, a valve needle and inflation cover assembly and a main body hanging device, the rest of the parts except the first two parts form the main body part, the number of each of the first seven parts is two, and the first seven parts are in bilateral symmetry regarding the axial vertical central line of the main body part as the center. The air spraying pipe assemblies are assembled inside axial center holes of the middle sleeve assemblies, are in sliding fit, are located in the center of the main body part, and are in bilateral symmetry regarding the axial vertical central line of the main body part as the center. The motion triggering components adopt safety gaskets. The mine under-shaft automatic explosive-suspension device triggered in the two directions is installed in an mine under-shaft tunnel with gas and coal duct explosion dangers, automatically suppressing an explosion in a bi-direction-triggered and spraying mode when the explosion occurs, and prevents the explosion from expanding and causing a secondary explosion, one set of the automatic explosive-suspension device replaces an original front set and an original reverse set, the cost of equipment is reduced, and installation and coal dust filling are convenient.

The invention relates to the field of a mining power supply technology, and discloses a mining explosion suppression type intelligent integrated power supply apparatus. The integrated power supply apparatus comprises an explosion suppression type feed device and at least one storage battery power supply device connected with the explosion suppression type feed device, wherein the explosion suppression type feed device is also connected with an external underground distribution substation communication device, an external emergency illumination device, an external high-voltage switchgear and an external power supply device. According to the invention, AC or DC power supplies with different voltage grades and for different purposes can be provided, the power supply reliability is high, the power supply quality is good, the backup time is long, and the pressing problems can be well solved that conventional home and abroad coal mine underground backup power supplies are in short supply, or the management is chaotic and complex, the control power supply of an electric facility is unstable, the harmonic wave interference is severe, the voltage bounce is obvious, the backup time of communication equipment is short, and under the condition of power failure of an underground main power supply, accidents may be caused due to incapability of real-time monitoring of underground power supply equipment.

The invention relates to a special motor in the field of the energy industry, in particular to an explosive-proof synchronous belt chromium alloy motor. The explosive-proof synchronous belt chromium alloy motor has double strict requirements for scale space and service life. The explosive-proof synchronous belt chromium alloy motor comprises a motor shell, a front end cover, a rear end cover, a motor spindle, a lead pin seat, a stator, a rotor and a synchronous pulley. A front bearing outer circle is fixed to a front cover center hole of the front end cover, and a front bearing section of the motor spindle is fixed to a front bearing inner hole. A rear bearing outer circle is fixed to a rear cover center hole of the rear end cover, and a rear bearing section of the motor spindle is fixed to a rear bearing inner hole. The explosive-proof synchronous belt chromium alloy motor has the advantages that a terminal box is fixedly connected to an internal lead outlet of the motor shell, a terminal box end cover is arranged at the outer end of the terminal box, the lead pin seat is located on the terminal box end cover, and an external lead penetrates through the lead pin seat. The lead pin seat is located on the rear end cover, and a cable penetrates through the lead pin seat. Anti-bending-moment components are fixed to the front end cover, and needle bearings are arranged between the anti-bending-moment components and the synchronous pulley.

The invention discloses a high-voltage explosion-proof three-phase asynchronous motor with a low temperature rise. The high-voltage explosion-proof three-phase asynchronous motor comprises an engine base, wherein a rotor and a stator are arranged in the engine base; a front end cover and a rear end cover are respectively arranged at the front end and the rear end of the rotor; the circle centers of the rotor and the stator are lower than the circle center of the engine base; a cooling pipe area is arranged on the engine base; a cooling pipe which passes through two ends of the engine base is arranged in the cooling pipe area; an external fan is arranged at one end, on the rear end cover, of the rotor; a fan cover is arranged at one end, on the rear end cover, of the engine base; the joint surface of the engine base and the front end cover and the joint surface of the engine base and the rear end cover are set into explosion-proof joint surfaces; the rotor is rotationally connected with the front end cover and the rear end cover through a front bearing and a rear bearing respectively; and the joint surface of the front bearing, the rotor and the front end cover and the joint surface of the rear bearing, the rotor and the rear end cover are set into the explosion-proof joint surfaces. According to the high-voltage explosion-proof three-phase asynchronous motor with the low temperature rise, the center height is reduced under the premise of ensuring the performance; and the high-voltage explosion-proof three-phase asynchronous motor has the advantages of low temperature rise, low vibration, low noise, high performance and high reliability.

The invention discloses an anti-explosion exciter, belongs to an ignition exciter, and aims to provide an anti-explosion exciter capable of igniting various combustible gases in anti-explosion occasions. The technical scheme is that: the inside of an anti-explosion shell is divided into a transformer cavity and a connection cavity by a partition plate; a magnetic saturation transformer is fixed in the transformer cavity of the anti-explosion shell; a low-voltage connection terminal and a high-voltage insulator are fixed in parallel in the connection cavity of the anti-explosion shell; the low-voltage side lead of the magnetic saturation transformer is connected with the low-voltage connection terminal; the high-voltage side lead of the magnetic saturation transformer is connected with thehigh-voltage insulator; three anti-explosion cable clamping joints are fixed at the bottom of the anti-explosion shell; an anti-explosion cover plate is mounted on the anti-explosion shell by a bolt;and the magnetic saturation transformer is fixed in the transformer cavity by epoxy resin casting. The anti-explosion exciter disclosed by the invention is suitable for the exciting ignition of anti-explosion occasions.

The invention discloses an A1 type anti-explosion quick coupler for an underground coal mine. The A1 type anti-explosion quick coupler comprises an anti-explosion steel jacket female head (9), wherein an anti-explosion steel jacket male head (10) is connected with one end of the anti-explosion steel jacket female head. The A1 type anti-explosion quick coupler has the benefits as follows: the device adopts a bolt-free two-stage explosive-proof structure, is in accordance with the explosion-proof criteria in the coal mine and free of other fastening tools, can realize manual and quick butt joint operation of the anti-explosion electric apparatus, obviously reduces the labor intensity of operation workers, and improves the efficiency of installation and maintenance of the anti-explosion electric apparatus; a Kevlar flame-retardant braid layer is arranged in the inner cavity of the device, so that the inner cavity explosive-proof gas volume can be reduced, and the explosive-proof capability can be obviously improved.

The invention discloses a slider-type safety isolation mechanism based on a hot-melting safety mechanism. The slider-type safety isolation mechanism based on the hot-melting safety mechanism comprisesa body (1), a slider (2), a cover plate (8) and the hot-melting safety mechanism (6). The hot-melting safety mechanism (6) comprises a limiting rod (601) and a hot-melting expansion structure. A sidegroove (202) is formed in the big end face of the slider (2), and the head of a pin pusher (5) is pressed on a steel ball installed in the side groove (202). A second blind hole (204) is formed in the other side of the big end face of the slider (2). The head of the limiting rod (601) sequentially penetrates through the second blind hole (204) and a first step hole (105). Holes used for mountingan initiating explosive device are formed in the body (1), the slider (2) and the cover plate (8), and the hole in the body (1), the hole in the cover plate (8) and the hole in the slider (2) in a released state coincide in the vertical direction. The slider-type safety isolation mechanism based on the hot-melting safety mechanism has a good explosion-proof isolation effect and is compact in structure and high in safety.

The invention discloses a film uncovering self-cleaning explosion-proof camera shooing device for a coal mine robot and a cleaning method, wherein the film uncovering self-cleaning explosion-proof camera shooing device and the cleaning method are suitable for coal mine underground. An explosion-proof box is internally of a sealing structure of through hole plug screw positioning and sealing ring sealing; the explosion-proof box is internally divided into an upper cavity and a lower cavity; an explosion-proof camera is fixed into the upper cavity, and window glass is arranged at the position, at a lens of the explosion-proof camera, of the explosion-proof box; the lower cavity comprises a left cavity and a right cavity, the left cavity is internally provided with a controller and a driver which are mutually connected, and a motor is arranged in the right cavity; and a rotating shaft of the motor extends out of the explosion-proof box to be provided with a three-fork halberd hook claw, and the lengths of three hook rods of the three-fork halberd hook claw are not the same. The film uncovering self-cleaning explosion-proof camera shooing device has the advantages of reasonable design,compact structure, convenient use and maintenance, high automation degree and the like.

The invention belongs to seawater-desalination special device, and discloses a molybdenum-alloy disc-type flameproof motor seawater-desalination weld seam joint device. The device comprises a seawater treatment pool, a pretreatment seawater sucker, a starting sucker, a high-pressure starting pump, a pipe tee joint, a reverse osmosis membrane and a welding-pressure-exchanging pressurizing machine pump. As an improvement, a pressurizing weld seam joint comprises a high-pressure-pipe weld end chamfer, a volute weld opening chamfer and a pressurizing outlet ring weld seam, the high-pressure-pipe weld end chamfer is located at the lower end of a conversion high-pressure pipe, the volute weld opening chamfer is located at the outer end of a volute weld outlet, the pressurizing outlet ring weld seam generates sealing connection between the conversion high-pressure pipe and the volute weld outlet, and a pressurizing weld seam joint is formed; the pretreatment seawater sucker is connected with a vertical weld-seam constant flow device in series, and a horizontal weld-seam constant flow device is connected between a high-pressure starting pump inlet and the starting sucker in series. The welding connection structure is adopted, high-pressure sealing connecting fixing can be achieved, particularly, the welding-pressure-exchanging pressurizing machine pump is additionally arranged, the structure is compact, and the energy saving effect is obvious.

The invention belongs to the field of explosive-proof electrical equipment, and in particular relates to an explosive-proof device (1) with double explosive-proof shells. The explosive-proof device comprises a first explosive-proof shell (2) used for accommodating electrical equipment, and a second explosive-proof shell (3), wherein the first explosive-proof shell (2) is arranged in the internal space of the second explosive-proof shell (3). The explosive-proof performance of electrical equipment such as a transmitter, provided with the explosive-proof device is greatly improved, so that the explosive-proof device can be used in a using environment with high requirements on explosive-proof performance. When the first explosive-proof shell (2) fails partially or completely, the explosive-proof function can be further performed through the second explosive-proof shell (3); therefore, sparks or explosion in the electrical equipment can be prevented from leaking to an external application environment.

The invention discloses a sliding block type insurance isolation device based on an electric pin pulling device. The sliding block type insurance isolation device comprises a body (1), a cover plate (8), a sliding block (2), a pin pushing device (5), the electric pin pulling device (6) and a status indication switch (7), wherein the body (1) is corresponding to a hole in the cover plate (2); a side groove (202) is formed in a large end surface on one side of the sliding block (2); a steel ball (3) is arranged in the side groove (202); the head of the pin pushing device (5) is pressed on the steel ball (3); a second blind hole (204) is formed in a large end surface on the other side of the sliding block (2); a first stepped hole (105) corresponding to the second blind hole (204) is formed in the body (1); a pin head of the electric pin pulling device (6) is stuck in the second blind hole (204) and the first stepped hole (105) in sequence; a hole in the sliding block (2) in the limitingstate is staggered from a hole in the body (1); and after limiting relief, the sliding block (2) is aligned with the body (1). The sliding block type insurance isolation device based on the electric pin pulling device is simple in structure and good in isolation effect.

The invention relates to an overhead explosion-proof air conditioner which comprises a condenser, an evaporator, a motor, a compressor and an explosion-proof line control box which are arranged in an air conditioner shell, wherein the air conditioner shell is arranged on a top plate of an air-condoning cabin; the motor is a biaxial extension explosion-proof motor; a centrifugal fan and an axial fan are respectively and correspondingly connected to the evaporator and the condenser; the centrifugal fan is connected to a shaft head at one end of the biaxial extension explosion-proof motor through a copper volute; and the axial fan is connected to a shaft head at the other end of the biaxial extension explosion-proof motor through a guide wind ring. The air conditioner is simple and compact in structure, flame-retardant, explosion-proof and high in security level.

The invention discloses a coal mine and underground high-safety flame-proof motor which comprises a motor body, an inner shell and an outer shell, the motor body is arranged in the inner shell, the outer shell is arranged on the outer side of the inner shell in a sleeving mode, and the inner shell and the outer shell are fixedly connected through two first sealing rings. A first end cover is arranged at one end of the inner shell, a second end cover is arranged at one end of the outer shell, two second sealing rings are arranged between the inner shell and the second end cover, a first anti-explosion mechanism is arranged in the inner shell, and a second anti-explosion mechanism is arranged between the inner shell and the outer shell. According to the explosion-proof motor, the inner shell and the outer shell are arranged, the two end covers on the inner shell and the outer shell are staggered, the situation that sparks are directly leaked from the connecting position of the end covers of the inner shell and the outer shell when the motor body generates the sparks is prevented, the explosion-proof effect of the motor is good by arranging multiple explosion-proof mechanisms, and the safety of the external environment is improved.

The invention discloses a miner lamp which comprises a lamp holder component and a power supply box electrically connected with the lamp holder component, wherein the power supply box comprises a box body, a storage battery located in the box body, a charging device and a power generation device partially accommodated in the box body; a step hole is formed in the side wall of the box body; the power generation device comprises an electric generator, a rocking handle rotating shaft and a power generation rocking handle; the electric generator comprises an upper casing and a lower casing which are in plane explosion-proof fit; a through hole is formed in the side wall of the lower casing; a circular bulge communicated with the through hole is formed on the outer wall; one end of the circular bulge abuts against the inner wall of the box body and is communicated with the step hole; a rotating shaft end of the electric generator is accommodated in the circular bulge; the rocking handle rotating shaft penetrates through the step hole, and one end of the rocking handle rotating shaft is connected with a rotating shaft of the electric generator; and the other end of the rocking handle rotating shaft is connected with the power generation rocking handle. The power generation rocking handle is rotated, so that the electric generator generates power, and the storage battery supplies power to the lamp holder component in time; the upper casing, the lower casing and the rotating shaft of the electric generator form a sealed explosion-proof structure, and the circular bulge seals the step hole, so that electric sparks produced in the box body are prevented from floating towards the outside, and the safety of the miner lamp is higher.

The invention relates to an auxiliary offshore oil well device, in particular to an auxiliary zinc alloy welding piston buffer offshore oil well machinery. A synchronous driving belt is arranged between an output synchronous belt wheel and a belt wheel turn plate of a squirrel cage type flame-proof synchronous belt wheel motor, each welding piston buffer uses double-piston seal bidirectional buffer connected and combined in a welding mode, each welding piston buffer can simultaneously bear pull or pressure, and a work platform can resist the sea wave impact from any direction; a sealing ring is arranged on the threaded bottom plane in a cable box end cover to secondarily isolate electric spark to further avoid the electric spark leakage, the flame-proof effect is good, and the safety performance is high. Through combining the squirrel cage type flame-proof synchronous belt wheel motor with the welding piston buffers for the work platform, the problem of easiness in damage of a power source motor and the whole buffer problem of oil well facilities which always perplex the offshore oil well are solved, and the effect is unexpected.

The invention relates to a mining scraper conveyer driving control system. The mining scraper conveyer driving control system comprises two sets of branch control systems, wherein one set of branch control system is a main control system which is used for controlling the speed of a driving motor of a scraper conveyor, the other set of branch control system is a slave control system which is used for controlling the moment of a driven motor of the scraper conveyor, the two sets of systems are the main and slave control systems to each other, and each set of branch control system comprises a three-electrical-level PWM rectifier, a super-capacitor set, a three-electrical-level inverter and a wave filter which are connected together in sequence. The mining scraper conveyer driving control system has the advantages that an electric circuit is simple in structure, low in cost, easy to control and high in performance cost ratio, a power electronic technology and an all-digital intelligent technology are utilized, efficient utilization of the motors and electric energy thereof is realized, by means of organic combination with the super-capacitor sets, various special working conditions ofthe scraper conveyor can be realized more effectively, and effective utilization of regenerative energy is realized.

The invention relates to a mining scraper conveyer intelligent and efficient driving system. The mining scraper conveyer intelligent and efficient driving system comprises two sets of branch control systems, wherein one set of branch control system is a main control system, the main control system is used for controlling the speed of a driving motor of a scraper conveyor, the other set of branch control system is a slave control system, the slave control system is used for controlling the moment of a driven motor of the scraper conveyor, the two sets of systems are the main and slave control systems to each other, each set of branch control system comprises a three-electrical-level PWM rectifier, a three-electrical-level inverter and a wave filter which are connected together in sequence,one ends of two-direction DC / DC current transformers are connected in super-capacitor sets, and the other ends of the two-direction DC / DC current transformers are connected in parts between the three-electrical-level PWM rectifiers and the three-electrical-level inverters. The mining scraper conveyer intelligent and efficient driving system has the advantages that an electric circuit is simple instructure, low in cost, easy to control and high in performance cost ratio, efficient utilization of the motors and electric energy thereof is realized, by means of organic combination with the super-capacitor sets, various special working conditions of the scraper conveyor can be realized more effectively, and effective utilization of regenerative energy is realized.