76results about How to "Guaranteed security risks" patented technology

The invention belongs to the technical field of construction site inspection, and discloses an intelligent construction site on-site inspection management system and method based on a GPS technology.The intelligent construction site on-site inspection management system comprises: a video monitoring module, an image acquisition module, an engineering quality detection module, a central control module, a GPS positioning module, an inspection navigation module, an inspection module, an inspection management module, an inspection information statistics module, a construction data processing module, a safety alarm module, a wireless communication module, a data storage module, a terminal module and a display module. According to the invention, through the positioning module, a manager can visually know the current position and movement track of a person entering a construction site in real time; potential safety hazards can be effectively eliminated in the bud; the hidden danger rectification data and the construction safety data are input into a preset diagnosis model through a construction data processing module, safety production condition evaluation of a construction project is obtained, and the processing speed is increased; and an accident hidden danger is greatly reduced.

The invention discloses an elevator remote monitoring system. The elevator remote monitoring system comprises a plurality of elevator control systems and corresponding remote monitoring terminals. Each remote monitoring terminal is connected with the corresponding elevator control system to collect elevator operating data. The elevator remote monitoring system further comprises a remote monitoring server. The remote monitoring terminals transmit the collected elevator operating data to the remote monitoring server which comprises a receiving and storing module and an alarming module. The receiving and storing module receives and stores the elevator operating data from the remote monitoring terminals, and the alarming module sends an alarming short message to a relevant worker. According to the elevator remote monitoring system provided by the invention, when breakdown occurs to an elevator or hidden dangers exist, the alarming short message is automatically sent to inform a serviceman or a manager so as to treat the breakdown or the hidden dangers in time to ensure safe service of the elevator and improve alarming timeliness and reliability, and meanwhile a data analyzing module is arranged to automatically analyze the result of datum mining, so that the analyzing process of the worker is omitted.

The invention discloses a belt transportation system which comprises a belt transportation mechanism, a belt detection device, a monitor device, belt deviation adjusting mechanisms and a belt cooling mechanism. The belt transportation mechanism comprises a belt and belt supporting components. The belt detection device comprises a routing inspection mechanism, temperature detection sensors and belt deviation detection modules. A routing inspection sliding mechanism and a sliding drive mechanism are arranged on a rack. The routing inspection mechanism comprises a routing inspection box, a smoke detection sensor, a gas detection sensor and a fixed camera. The monitor device comprises a control device, a wireless power supply module, a cooling control mechanism and a deviation adjusting drive mechanism. The belt transportation system is simple in structure and convenient to implement; the belt transportation work condition is detected in real time; the belt is adjusted and cooled; belt deviation or high-temperature work is prevented from bringing potential safety hazards to workers and coal mine transportation; continuous transportation of the belt is achieved; and the coal production efficiency is improved, and labor intensity is relieved.

The invention belongs to the technical field of design and manufacturing of coal mine underground auxiliary transportation equipment in order to solve the transportation problem of a coal mine underground big-gradient crossheading roadway, and provides a big-gradient crossheading step-forward self-moving equipment train. The equipment train comprises a front anchoring, pulling and moving device, a middle anchoring, pulling and moving device, a rear anchoring, pulling and moving device, platform trolleys, advancing jacks and a pipe cable telescopic bearing system, wherein a front advancing jack is arranged at the front end of the front anchoring, pulling and moving device, the rear end of the front anchoring, pulling and moving device is connected with the platform trolleys through rear advancing jacks, the two ends of the middle anchoring, pulling and moving device are connected with the platform trolleys through the corresponding advancing jacks, the front end of the rear anchoring, pulling and moving device is connected with the platform trolleys through the corresponding advancing jacks, and the rear end of the rear anchoring, pulling and moving device is connected with the pipe cable telescopic bearing system through connecting rods. The train self-moving function, the walking deviation adjusting function, the pipe cable self-moving function and the like are highly integrated for the equipment train, and therefore the equipment train can step forward to move by itself when the gradient of the crossheading roadway is + / -25-degrees, slippage of equipment is effectively prevented, and it is guaranteed that the equipment train safely works in the big-gradient roadway.

The invention relates to a complete gluing apparatus and a gluing technology of a new energy automobile assembled battery. The apparatus comprises a main frame (1), the main frame (1) is provided with a conveying device (2), a feeding device (3), a gluing device (4) and a cell grasping and stacking device (5) are sequentially arranged above the conveying device (2), the main frame (1) is provided with a cell overturning device (6), the conveying device (2) is provided with a positioning sensor (7), and the positioning sensor (7) is connected with a controller (8); the cell grasping and stacking device grasps cells to the cell overturning device; and the cell overturning device overturns the cells to a cell fixing and clamping assembly, the cells are conveyed to the gluing device through a conveying track and are glued, and the cell grasping and stacking device grasps and stacks the cells. The apparatus and the technology have the characteristics of improvement of the gluing quality, reduction of the labor intensity of workers, increase of the working efficiency, improvement of the surface cleanliness of the cells, and improvement of the labor safety.

The invention discloses an NB-IOT (narrow-band internet of things)-based intelligent safety helmet and a positioning method thereof. The intelligent safety comprises a safety helmet worn on the head of a user, a controller, an NB-IOT terminal module, a data acquisition sensor module, an SOS positioning module, an alarm module, an NB-IOT base station, and a monitoring server; the controller and theNB-IOT terminal module are mounted on the safety helmet; the data acquisition sensor module, the SOS positioning module and the alarm module are arranged at an operation site; the NB-IOT base stationis arranged at the ground; and the monitoring server is arranged on the cloud. According to the NB-IOT (narrow-band internet of things)-based intelligent safety helmet and the positioning method thereof of the invention, the NB-IOT is adopted to wirelessly transmit the environmental data and location information of workers on the site to the monitoring server, so that the real-time warning and monitoring of the working conditions of all the workers on the site can be realized. With the NB-IOT (narrow-band internet of things)-based intelligent safety helmet and the positioning method thereof provided by the technical schemes of the invention adopted, the workers can be located in real time, a problem of difficult rescue in the event of an accident can be solved, major safety accidents canbe effectively reduced or avoided, and management efficiency can be improved.

The invention relates to a self-processing equipment for a fish and aquatic product assembly line, which includes a base plate, four pillars, a storage and grasping device, a descaling device and a belly digging device. Four pillars are uniformly installed on the lower end of the base plate, and A storage grabbing device is installed, a descaling device is installed in the middle of the base plate, and a belly cutting device is installed on the front side of the base plate. The present invention can solve the problem that when descaling and dissection of fish, it is necessary for personnel to hold down the fish and use tools to scrape the scales of the fish and then dissection of the fish. It is easy to cause safety hazards. During the descaling process, personnel need to press the fish to descale both sides of the fish body. The smooth body of the fish will easily lead to shedding and affect the progress of descaling. It is difficult to collect and clean the scales after descaling. The unsteady pressing of the machine increases the difficulty of dissection and viscera extraction. The viscera excavated by personnel are not collected centrally, which takes a long time, is labor-intensive, and has low efficiency.

The invention discloses a fault diagnosis and processing method for a current sensor of a permanent magnet synchronous motor control system; according to the method, three current sensors are used forcontrolling the motor, and when the sum of three-phase stator current is detected to be not zero, it is judged that a certain phase of current sensor suffers from a fault at the moment; through IA and IB two-phase stator current coordinate transformation, dq axis currents Id1 and Iq1 are obtained; IA and IC two-phase stator current coordinate transformation is carried out to obtain dq axis currents Id2 and Iq2; through IB, and IC two-phase stator current coordinate transformation is carried out to obtain dq axis currents Id3 and Iq3, and then three current amplitude feedback values influencedby two-phase currents are established; the current feedback values are used to position to a specific current sensor of a fault, and the maximum output power is reduced; the two-phase current sensorsare used for controlling the motor, so that a vehicle runs in a limp mode. According to the method, potential safety hazards caused by faults of the stator current sensors are solved, and a limp modeof the vehicle after a fault is provided, so that the safe driving of the vehicle is ensured, and the driving and riding experience is improved.

The invention discloses a movable hanger operating platform which structurally comprises a truss lower, two pairs of longitudinally symmetrical connecting rod parts are welded on the truss base plate in a transversely symmetrical mode, a monorail trolley is arranged at the upper end of each connecting rod part and forms a kinematic pair with the a repair rail at the bottom of the lower bridge face of a steel trussed beam, the length*width specification of the truss base plate is 16.5m*8m, riffled steel plates are laid on the top face of the truss base plate, and guardrails are arranged on the periphery of the top face of the truss base plate. The invention further discloses manufacturing, installing, using and removing methods of the movable hanger operating platform. The movable hanger operating platform has the advantages of being low in cost, easy to manufacture, convenient to operate and capable of being recycled, and not only overcoming a number of defects of the prior art and solving the problem that construction is inconvenient in an assembling process of the steel trussed beam, but also ensuring that no potential safety hazards of objects falling from high altitude exist and the ambient environment is not polluted, so that the technical purposes of being safe and reliable, reducing cost, shortening construction periods and improving efficiency are achieved.

The invention relates to automatic coating and shearing equipment for cone-frustum-shaped food packaging box manufacturing. The equipment comprises a conveying device, a coating device, a shear deviceand a collection device. The coating device is installed on the front side of the upper end of the conveying device, the shear device is installed in the middle of the upper end of the conveying device, and the collection device is installed on the rear side of the conveying device. The problems that when cone-frustum-shaped food packaging boxes are coated and sheared, workers need to manually place raw paper into a lamination machine for coating and manual shear, the process is tedious and complex, labor is wasted when equipment is carried to the designated spot, processed raw paper needs tobe manually wound and collected and is not easy to collect, conveyed paper needs to be pressed through a tool, potential safety hazards are caused by misoperation in the shear process, a cup bottom and a back body are sheared through tools, the sheared cup body paper and cup bottom paper are not collected in a separated mode, waste is not recycled in a concentrated mode, consumed time is long, the labor intensity is large and the efficiency is low are solved.

The invention discloses a fastener, which comprises a male fastener, a female fastener, an unlocking operation piece and a lever pivoted on the male fastener or the female fastener around a pivoting center line, one of the male fastener and the female fastener is provided with a locking part, and the other one of the male fastener and the female fastener is provided with a plug-in matching lockingpart matching the locking part; the male buckle and the female buckle are oppositely inserted in the direction close to each other so that the locking part and the oppositely-inserted lock matching part can be locked. The unlocking operation part is movably arranged on the side wall of the male fastener or the female fastener where the lever is located; the pivoting center line is located betweenthe first end and the second end of the lever, the unlocking operation piece is connected with the first end of the lever, the second end of the lever and the locking part are arranged in a linkage mode, the lever is driven by the unlocking operation piece to rotate around the pivoting center line, and the rotating lever is in linkage with the locking part to be disengaged from locking of the plug-in matching lock part. The fastener has the advantages of being convenient to unlock and operate and simple in structure on the basis of guaranteeing high concealment of the unlocking operation piece.

The invention discloses a single cylinder fuel cut-off high-speed diesel engine unit pump. The single cylinder fuel cut-off high-speed diesel engine unit pump comprises a pump body, a plunger valve, a delivery valve seat and a delivery valve body. When fuel leakage is caused by faults such as the combustion difficulty which is caused by the low pressure generated due to pipeline oil leakage between a fuel spray nozzle of a fuel injection pump and an engine combustion chamber or when fuel leakage is caused by sealing of the engine combustion chamber, a user needs to unscrew a fuel cut-off shaft at the moment, an oil cut-off steel ball ejected by the oil cut-off shaft is disengaged from the sealing conical face of a first fuel cut-off hole outlet under the action of fuel pressure, high-pressure fuel generated when a plunger rises flows back into a low-pressure oil inlet and return cavity through a second fuel outlet passageway, a first fuel cut-off hole, a second fuel cut-off hole, a third fuel cut-off hole and a fourth fuel cut-off hole, the second fuel outlet passageway, the first fuel cut-off hole, the second fuel cut-off hole and the third fuel cut-off hole are formed in the delivery valve body, the fourth fuel cut-off hole is formed in the delivery valve seat, and therefore it is ensured that damage caused to core parts of an engine when fuel leaks and potential safety hazards are generated due to explosions are eliminated.

The invention provides a security processing method. The security processing method comprises the following steps: verifying a binding state of access equipment in a server; when the access device isnot bound in the server, assisting the access device and the server to perform bidirectional authentication based on a preset rule; and when the bidirectional authentication succeeds, obtaining binding data about the access device from the server and sending the binding data to the access device, and allowing the access device and the server to perform working data communication based on a processkey, the process key being generated based on the binding data. The invention further provides a security processing device, computer equipment and a computer readable storage medium.

The invention relates to an automatic identification system for outdoor advertising medium angle tilt and offset, and the system adopts the following hardware facilities including a gravity center sensing terminal, a cloud server and an alarm receiving terminal, wherein the gravity center sensing terminal is composed of a tilt angle sensor module and a mobile network communication module; the tiltangle sensor module integrates data acquisition and record of dynamic acceleration and static acceleration, and collects and uploads the change values of the accelerations on the three X, Y and Z axes of the monitored billboards; the mobile network communication module uploads the data to the cloud server in real time for storage and recording; and the cloud server compares the transmitted data with the initially recorded tilt angle data of the initial position to generate angle tilt distribution models of the installing position of the monitored billboard, compares and analyzes with the deviation value with the initial data, and sends an alarm to the alarm receiving terminal. The automatic identification system for outdoor advertising medium angle tilt and offset can monitor the offset and tilt condition of outdoor billboards in real time, and eliminate potential safety hazards.

The invention discloses a slurry filling device for a tunnel pipe. The slurry filling device comprises a slurry filling pipe of a tunnel and is characterized by further comprising a slurry pressing device and a connection device. The slurry pressing device is composed of a round connection pipe, a fixing member, a sealing ring and a hinge mechanism, wherein the round connection pipe is composed of two semi-round pipes, the sealing ring is arranged in the round connection pipe, one end of the round connection pipe is connected with the slurry filling pipe of the tunnel, the other end of the round connection pipe is connected with the connection device communicated with a slurry filling pump, and the fixing member for fastening the round connection pipe and the hinge mechanism for opening and closing the round connection pipe are connected onto the outer wall of the round connection pipe, and the fixing member and the hinge mechanism are oppositely arranged. The slurry filling device ensures that the slurry cannot be leaked during filling, simultaneously can achieve continuous and intermittent slurry filling, is good in slurry filling reinforcing effect, greatly reduces the cycling time of slurry filling operation, is high in working efficiency, simultaneously shortens the time for slurry filling of surrounding rocks, is easy and convenient to operate, does not need welding operation at site, performs binding reinforcing operation through iron wires manually, is low in labor intensity and easy to process and manufacture, can be utilized fully and repeatedly and saves materials.

The invention relates to installation and maintenance equipment for an LED bulb lamp. The installation and maintenance equipment comprises a movement adjustment device, a grabbing device, two auxiliary devices, a limit device and a wiping device, wherein the grabbing device is installed at the middle part of the front end of the movement adjustment device; the limit device is installed at the right side of the front end of the movement adjustment device; the two auxiliary devices are installed at the middle part of the movement adjustment device, and symmetrically arranged; and the wiping device is installed at the rear end of the movement adjustment device. The installation and maintenance equipment disclosed by the invention is capable of solving the problems that a bulb needs to be manually installed in the existing installation and maintenance processes for the LED bulb lamp, during bulb installation, personnel carry a ladder to a specified position, then take the LED bulb lamp andclimb up to install, and the ladder slips down due to smooth floor to cause potential safety hazards, and during maintenance for the LED bulb lamp, the personnel climb up by virtue of the ladder andthen remove dust, the dust falling off is liable to get into eyes to cause potential safety hazards, and the like; and the installation and maintenance equipment is capable of realizing the functionsof automatic stably-clamping installation, later maintenance and multidirectional adjustment for the LED bulb lamp.

The invention discloses a packaging bottle suitable for injections (such as small-volume injections, powder injections, freeze-dried powder injections, etc.), the packaging bottle includes a plastic bottle body and a plastic composite cover; the plastic bottle body is made of polyolefin One or more of resins or polyester resins are made into a one-layer or multi-layer structure; the plastic composite cover is composed of an inner cover and an outer cover; the upper part of the plastic bottle body is provided with a mouth, and the The inner cover of the plastic composite cover is fitted with the bottle mouth. The packaging bottle of the present invention has stable chemical properties, does not react with medicines, does not produce dissolved substances, has good air tightness, low oxygen and water vapor transmission rates, can withstand high-temperature sterilization and low-temperature freezing, is light in weight, is not easily damaged, and is convenient. Transportation and other characteristics, it is suitable for the packaging of small-volume injections, powder injections and freeze-dried powder injections and other injection drugs.

The invention relates to an Internet-of-things fan cabin door safety and anti-misoperation control method based on electric power two-ticket management. The method comprises the steps of establishinga unique corresponding relation between the coding of a fan cabin door and a two-ticket system; establishing the intelligent control connection between wireless equipment in an electric power privatenetwork and the fan cabin door, and establishing a wireless local area network; establishing the connection between a mobile APP system, the wireless local area network and the intelligent control system of the fan cabin door; carrying out key verification and cabin door revelation for the intelligent control system of the fan cabin door; matching a secret key received through a network cable witha secret key received through a Bluetooth device by the fan cabin door, switching on a door lock power supply after the verification passing operation, and then opening the fan cabin door; after theoperation is completed, switching on the door lock power supply again through the mobile phone APP of a mobile terminal, reversely rotating the motor of a door lock, and closing the fan cabin door. According to the invention, the connection between the mobile APP of the mobile terminal held by workers and the fan cabin door is established, so that the possibility of misoperation is avoided. Meanwhile, the safety of the cabin door is improved by arranging a lock with a locking part.

The invention discloses a multifunctional rotary derrick which comprises a main derrick body and a rocker arm, wherein the top of the main derrick body is provided with guiding pulleys, and the top of the rocker arm is provided with a load bearing pulley and a lifting pulley. The multifunctional rotary derrick further comprises a base, a rotary column is vertically arranged in the center of the base, a plurality of idler wheels are evenly arranged on the base around the rotary column, a rotary base connected to the rotary column in a sleeved mode and in contact with the idler wheels is arranged above the base, a connecting cover is fixedly arranged at the position, corresponding to the rotary column, of the rotary base, the bottom of the main derrick body is hinged to the upper portion of the connecting cover, the rocker arm is hinged to the side wall of the connecting cover or the rotary base, and two sets of rope winding shafts and a fixed pulley are further and fixedly arranged on the rotary base. The multifunctional rotary derrick is simple in structure and convenient to disassemble and assemble, is used for tower material lifting in the vertical direction, is capable of conveniently carrying out 360-degree free rotation and meets the requirement of lifting work with different heights and different angles in the iron tower erecting process.

The invention relates to the technical field of heat exchangers, in particular to a water containing plate for a heat exchanger. The water containing plate for the heat exchanger comprises a bottom plate and a water guiding plate, wherein the water guiding plate is arranged on the periphery of the bottom plate in a surrounding way and can be detachably connected with the bottom plate; multiple first notches are arranged on the peripheral side of the bottom plate; the water guiding plate is provided with multiple second notches corresponding to the first notches; the first notches and the corresponding second notches enclose to form multiple drain holes for draining; and a hole wall of each drain hole downwards extends out of a flow guiding part. Compared with the prior art, the multiple drain holes are formed between the water guiding plate and the bottom plate and are formed in the periphery of the bottom plate in a surrounding way, the drain holes extend out of the flow guiding part,and during a draining process, the partial adhesion capacity and the surface tension of water are eliminated through the flow guiding part, so that defrosting water and condensation water can be drained out of the water containing plate along the flow guiding part, the water can be drained smoothly, and the occurrence of the phenomenon that the drain holes are secondarily frozen is avoided; and in addition, an electric auxiliary heating part can be omitted, so that the manufacturing cost is reduced, and the potential safety hazard is eliminated.

The invention provides a degassing device for hydrogen sulfide gas in drainage pipe network. The degassing device comprises supporting feet, side plates, cross rods and impellers, wherein the side plates are arranged on the supporting feet, the cross rods are arranged on the side plates, and the impellers are arranged on the cross rods; and each impeller 4 is made of an iron-carbon filler. The invention further provides a degassing method for the hydrogen sulfide gas in the drainage pipe network. The method uses the degassing device for the hydrogen sulfide gas in the drainage pipe network. According to the degassing device and method for the hydrogen sulfide gas in the drainage pipe network, a water body is subjected to reoxygenation by utilizing the impellers, so that the removal of hydrogen sulfide in the water body is facilitated, the hydrogen sulfide is further removed by utilizing iron ions released by the iron-carbon filler, the hydrogen sulfide gas in a drainage pipeline is removed from the source, and therefore the personal safety of workers is guaranteed, and the potential safety hazard of pipeline explosion is eliminated; and lifting parts are used for the descending andascending processes, so that the position of equipment in the drainage pipe network is controlled, the purpose that the workers do not need to go down to a well can be achieved, and therefore the application cost of the gas removal equipment for the hydrogen sulfide in the drainage pipeline is greatly lowered.

The invention discloses a technology for preventing seepage of a suspended water cooling pond wall of a corex furnace by means of reaming, pipe penetrating and blocking. The technology comprises the steps that firstly, an original pipe penetrating hole in the pond wall is reamed, and after reaming is finished, a pipe is sleeved with an inner flange piece in advance, the inner flange piece is closely attached to the pond wall, and then the inner ring of the inner flange piece and the outer wall of the pipe are fully welded; grouting at the initial stage is carried out, grouting and tamping are firstly carried out in a cavity formed by the pipe and the lower portion of the pond wall, the weight ratio of components, namely, high-strength quick-dry contraction-free cement mortar to small gravel to alkyd enamel to water, of grout during grouting at the initial stage is 4:1:1:8, outer flange pieces are used for blocking, then the pipe wall is beaten every other 20 min to 30 min to generate vibration, gaps are filled till the cavity is thoroughly full, and the outer flange pieces are covered with wool felt; and secondary smearing is carried out, after 3 days to 5 days, coating is smeared to the outer surfaces of the outer flange pieces, the weight ratio of components, namely, high-strength quick-dry contraction-free concrete mortar to washed-out sand to paint to water, of the coating is 4:1:1:4, and water can be injected for testing after standing is carried out for 2-3 days and impurities in a pond are cleared away.

The invention discloses a rocker bearing water tank damper, and belongs to the technical field of energy dissipation and vibration attenuation of civil engineering structures. The rocker bearing water tank damper comprises a plurality of rocker sliding support saddles, a water tank, a damper support saddle, a box column, and a viscous damper; each rocker sliding support saddle comprises an upper support saddle plate, a metal ball and a lower support saddle plate; the upper support saddle plate is fixed at the lower surface of the water tank; the lower support saddle plate is fixed on an upper top plate or a spandrel girder of the structure; the upper saddle plate is opposite to the lower saddle plate; the metal ball is placed in the middle to achieve oppositely sliding between the upper support saddle plate and the lower support saddle plate; the box column is arranged at the bottom part of the water tank; the damper support saddle is arranged on the upper top plate or the spandrel girder of the structure; and the viscous damper is horizontally arranged between the box column and the damper support saddle. By adopting the rocker bearing water tank damper, on one hand, the adverse effect of a high-level water tank on the structure under the horizontal load is removed; and on the other hand, dynamic response of the structure under the horizontal load is greatly reduced by the formed water tank damping system. The rocker bearing water tank damper is stable in damping effect, simple in structure, safe and reliable, good in durability, and strong in designability.

The invention discloses a safety driving intelligent control system for a lorry-mounted crane. The safety driving intelligent control system comprises a vertical supporting leg locking and detecting part, a horizontal supporting leg folding detecting part, a telescopic arm folding detecting part, a hook folding detecting part, a rotating locking and detecting part, a transport vehicle driving state detecting part, a safe driving instruction, a controller, a GPS module and a remote intelligent management platform. Compared with the prior art, it is guaranteed that potential safety hazards existing in the driving process of a lorry-mounted crane transport vehicle are detected in real time, the safety in the vehicle driving process is guaranteed, the potential safety hazards are avoided, thepersonal safety and property safety are guaranteed, and wide market prospects are achieved.

The invention relates to a brake disc loading and unloading clamp capable of automatically changing spacing, and belongs to the technical field of brake disc loading and unloading clamps. The brake disc loading and unloading clamp comprises a frame body, wherein a transmission device which is movably connected is arranged inside the frame body; the transmission device is provided with at least three drive claws which are movably connected; the drive claws are movably connected to the frame body; the free ends of the drive claws are provided with electromagnets; motors drive the drive claws tomove back and forth between the edge of the frame body and the circle center; a turbine is provided with a cam track slot; center distances of the drive claws can be changed by rotating the turbine, so that manual automatic model replacing can be effectively replaced, and multiple potential safety hazards in manual model replacing are avoided; through self-locking characteristics of a turbine anda worm, the positions of the drive claws are fixed, spacing is not changed along with gripping stress, product quality is guaranteed by precise model replacing, and production efficiency is improved;and the drive claws on upper and lower surfaces of the frame body can turn over up and down by clamping a connecting plate through a mechanical hand, so that dual-station changing can be realized, andgripping efficiency can be effectively improved.

The invention discloses a drilling machine assembly with a drilling pipe righting function. The drilling machine assembly comprises a rack, a power assembly, an active drilling pipe, a clamper assembly and a righting device, wherein the power assembly can slide front and back and is installed on the rack; the active drilling pipe is driven by the power assembly to rotate and extend forwards and backwards; the clamper assembly is connected to the rack, located on the front side of the active drilling pipe and used for clamping a drilling pipe in a clamping hole and a new drilling pipe; the righting device is connected to the rack, located between the active drilling pipe and the clamper assembly and used for supporting and righting the new drilling pipe and making the drilling pipe and other drilling pipes coaxial. The righting device replaces a holding function, when the drilling pipe rotates, the hands of the human body are prevented from making contact with the drilling pipe, the screw-on and screw-off aims are achieved, potential safety hazards are eliminated, and the personal safety of workers is effectively ensured. According to the device, screw-on is achieved without reversal of a drilling machine, and the hidden danger of drill slippage is eliminated.

The invention relates to a manufacturing method of a mine blow dryer, and the method comprises the following steps: manufacturing a foundation, namely weaving and expanding 1300D or 1500D ultralow contraction twisted polyster fiber filaments serving as warps and wefts by use of a braiding machine to form the gridded foundation; manufacturing a PVC (polyvinyl chloride) rolling film; and laminatinga film on the PVC rolling film and foundation, which are subjected to high temperature plasticizing, by a film laminator to obtain the mine blow dryer. The mine blow dryer manufactured by adopting the method provided by the invention has the advantages of good abrasive resistance and tear resistance, light weight, good water-proof, anti-fouling, mildew-proof, anti-flaming and anti-static effects and long service life, is ageing-resistant and can be formed singly.

The invention relates to a flatness measuring device and a using method thereof. The flatness measuring device comprises a main ruler and a laser range finder, wherein a horizontal bubble is arrangedon the top face of the main ruler, a telescopic adjusting piece is arranged on the bottom face of the main ruler, the length of the adjusting piece is correspondingly adjusted according to the horizontal bubble, and the main ruler is made to be horizontal; the laser range finder is mounted on the top surface of the main ruler and can be moved and adjusted in the length direction of the main ruler,the laser range finder is moved along the main ruler and emits laser to a to-be-measured structure to measure the distance between a multiple sets of main rulers and the to-be-measured structure, andtherefore the flatness of the to-be-measured structure is obtained through comparison. Thus, the problem that the flatness of the to-be-measured structure is difficult to measure is effectively solved, the measurement precision and the construction quality can be ensured, in addition, the potential safety hazard is reduced, the safety of measurement personnel is ensured, and the measurement device is simple in structure and easy to realize.

The invention discloses an acceleration effect-adjustable two-wheeled electric vehicle speed regulation method and a speed regulation system. The acceleration effect-adjustable two-wheeled electric vehicle speed regulation method comprises the following steps that a control button is pressed, and a speed regulation handle is rotated to carry out normal acceleration driving; and when the speed regulation handle is rotated by mistake, only low-speed driving with the highest speed of 3 KM / H can be conducted, and when a brake is pressed down, traction stopping and brake disc braking are conductedat the same time. The speed regulation system involves a permanent magnet, capable of moving relative to a hall sensor, in an accommodating cavity, a telescopic rod is arranged on one side, far away from the hall sensor, of the permanent magnet, a spring is connected between the permanent magnet and one end of the accommodating cavity, a linkage wire is connected between the permanent magnet and the speed regulation handle, the hall sensor is connected with a speed regulation controller, and the speed regulation controller is electrically connected with a speed sensor and a motor. The method and the system can improve the safety and have the advantages that the brake effect and the durability are relatively good.