194results about How to "Easy to control work" patented technology

A charge-discharge two-way power converter for a battery for an electric car adopts the structure that an input port (In) connected with a storage battery and an output port (Out) connected with a grid are mounted outside a main circuit; the main circuit is connected with a control circuit; the main circuit comprises a battery side filter circuit (1), a like-polarity bi-directional DC / DC converter (2), and a high-frequency isolation DC / DC circuit (3), a three-phase three-level circuit (4) and a grid side filter circuit (5) which are sequentially connected; and the control circuit comprises a DSP main controller (6), an MCU auxiliary controller (7) and an LCD or 485 communication circuit (8). According to the invention, the circuit adopts comparatively less elements, the intelligent degree is high, self detection and fault protection functions are provided, the equipment and operation costs are saved, the conversion efficiency is high, the working process is quick, stable, and controllable, the size is small, the dynamic property is good, and the purposes of environmental protection and energy conservation are achieved.

The invention provides an eye patch for relieving visual fatigue and belongs to the technical field of eye patches. The eye patch comprises a cover and Velcro fixing bands, multiple sandwiched layers I are arranged inside a cavity of the cover, heating pieces and medicine therapy bags are sequentially arranged in the direction of eyes of a human body inside the sandwiched layers I, a movable cover is arranged at the position, corresponding to the cavity, of the cover, a silica membrane is arranged on the face, making contact with the eyes, of the cover, protruding bubbles are arranged at the positions, corresponding to acupuncture points around the eyes, of the silica membrane, massage beads are arranged inside all the protruding bubbles and connected with a vibration motor which is connected with a power source, a temperature sensor and a microcontroller are arranged inside the cover, and the temperature sensor is sequentially connected with the microcontroller and the power source through wires. The compliableness and comfort level of the eye patch are improved, the effect of relieving visual fatigue is enhanced from the perspective of a short term and a long term, the good effects of relieving and treating visual fatigue are achieved through the combination of thermal therapy, medicine therapy and massage, safety is higher, structural design is reasonable, and using is convenient.

A double-barrel multi-chamber spring with an adjustable stroke comprises an outer tube and an inner tube. A chamber is formed between the inner wall of the outer tube and the outer wall of the inner tube. A first floating piston is arranged in the cavity for dividing the chamber into a first oil chamber and a first air chamber. A small separation piston is arranged between the outer wall of the hollow piston rod and the inner wall of the inner tube. The inner wall of the inner tube is divided into a second oil chamber, a third oil chamber and a second air chamber orderly by a floating control valve and the small separation piston. A fixed control valve is arranged in a back block for conducting or blocking the first oil chamber and the second oil chamber through an oil passage. The fixed control valve is controlled by an operation actuating lever extending out from the back block. The floating control valve can conduct the second oil chamber and the third oil chamber through the oil passage. The double-barrel multi-chamber spring with an adjustable stroke of the invention has the following beneficial effects that the operation of the gas spring of the invention can be controlled by the fixed control valve at the tail end of the spring, so that it only needs to open the control valve when the spring needs to stretch, and the spring has controllable operation and can stop at any position.

The invention relates to a continuously switchable four-way rotary valve, which comprises a rotating component and a non-rotating component. The rotating component mainly comprises a driving shaft, a rotary valve spool, a mandrel connecting pin and a shaft sleeve, wherein the rotary valve spool is provided with two arc through hole type fluid channels, and the rotary valve spool is connected with the driving shaft by the aid of the mandrel connecting pin. The continuously switchable four-way rotary valve can be superposed, and rotary valve units can be increased as needed. The continuously switchable four-way rotary valve is driven by a motor, can be continuously switched, and is free of impact during switching, long in service life and particularly suitable for serving as a high-concentration seawater guide valve for a reverse osmosis seawater desalinization energy recovery device.

The invention discloses a booster type electronic control hydraulic bridge plug feeding tool. The tool comprises a motor barrel, a balance barrel, a hydraulic boosting system and a working cylinder, wherein the motor barrel, the balance barrel, the hydraulic boosting system and the working cylinder are sequentially connected from top to bottom. A motor is arranged in the motor barrel, an oil storage chamber and an oil pump are arranged in the balance barrel, and the oil pump and an output shaft of the motor are in drive connection. The hydraulic boosting system is used for increasing output pressure of the small-power oil pump to pressure required by setting of a bridge plug. The working cylinder acts on the bridge plug through a bridge plug connecting assembly, and setting is achieved. The working process is safe and reliable, the pressure of the working cylinder can quickly reach 50 MPa, the requirements for bridge plug installation setting force are quickly met, operation time is shot, and working efficiency is high. The tool can be pulled out of a well mouth along with an oil pipe after setting of the bridge plug, the hydraulic boosting system is controlled to reset and then can be reused, the service life is long, and maintenance work is simple. The working process of the hydraulic system is controllable, the magnitude of loads and the loading speed can be adjusted according to requirements, ground monitoring can be achieved, and the installation process of the bridge plug can be grasped in real time.

The invention belongs to the lifting field of wind-turbine blades, and discloses a lifting appliance device for installing wind-turbine blades, and an operation method. The lifting appliance device for installing the wind-turbine blades comprises a lifting rope, a main beam lifting frame, horizontal walking mechanisms and fixture devices. The lifting rope is connected onto a lifting ring of the main beam lifting frame. The main beam lifting frame is welded by adopting double-layer structural steel; and a diesel engine, an electrical cabinet, a hydraulic station and a walking hydraulic cylinderare arranged on the main beam lifting frame. The horizontal walking mechanisms are arranged at two ends of the length direction of the main beam lifting frame. The fixture devices are arranged underthe horizontal walking mechanisms. According to the lifting appliance device for installing the wind-turbine blades, and the operation method provided by the invention, double clamping mechanisms areadopted, so that the safety on lifting fan blades can be ensured; and the clamping span of the horizontal direction of two pairs of clamping hands can be dynamically adjusted according to the blade length. The lifting appliance device for installing the wind-turbine blades provided by the invention adopts full hydraulic drive so as to be high and stable in torque, high in environment adaptability,long in service life, and convenient to operate, and can realize the advantages of controllability, adjustability and high safety during work.

A method of integrity production and integrity sale at least comprises flowing steps: printing or pasting random, discontinuous and no-repeat codes on the outer package of an individual product, a strip product, a box product and a big box product; inputting product identification card codes into a product data base which covers the whole sale area; building a sale information record data base in a system; and building a pre-sales enquiry system and an after-sale enquiry system. Compared with the prior art, the method of integrity production and integrity sale enables each individual product, each strip product, each box product and each big box product to possess a unique product identification card code by printing or pasting random, discontinuous and no-repeat codes on the outer package of the individual product, the strip product, the box product and the big box product. Due to the building of the product data base, the method of integrity production and integrity sale enables a consumer to conveniently conduct pre-sale enquiry and after-sale enquiry, guarantees interest of the consumer and a regular manufacturer to the maximum extent and enables a quality supervision department to conveniently conduct work of cracking down on fake products, an association of consumers to conveniently conduct rights protection work and a price control authority to conveniently conduct regulating and controlling work.

The invention discloses a multifunctional vehicle for emergency disaster relief and drainage of stagnant water. The multifunctional vehicle comprises a carrier loader chassis as well as a driving cab and a carriage which are arranged on the chassis, wherein a backpack type hydraulic oil tank and a fire extinguisher are arranged in a gap between the driving cab and the carriage, and a chassis power take-off hydraulic power station connected with the hydraulic oil tank is arranged on the chassis; a power generation bin, an equipment bin and a tool bin are arranged in the carriage, a vehicle-mounted power generation unit and a hidden type vehicle-mounted lifting rotary illumination device are arranged in the power generation bin, a vehicle-mounted cantilever crane is arranged on one side of the tool bin, a hydraulic saw and a hydraulic pickaxe are arranged on the other side of the tool bin through a support, and a cable hoist, an integrated type vehicle-mounted cleaning machine and an extension ladder are hoisted at the bottom of the carriage. The multifunctional vehicle for emergency disaster relief and drainage of stagnant water integrates multiple functions through reasonable and compact layout design within a limited space range, the power generation unit is arranged at the front part of the carriage and in the position where the gravity center of the load of the whole vehicle is located, so that the transportation stability of the vehicle is effectively guaranteed, and the vehicle traveling safety is effectively guaranteed.

A robot control system comprises an image shooting module, a relation building module, an image analyzing module and a control module. The image shooting module is used for controlling a time-of-flight camera to continuously shoot a controller to obtain a real-time three-dimensional image of the controller. The relation building module is used for calibrating N moving parts of the controller from the three-dimensional image of the controller according to N moving parts of a robot and building relations of one-to-one correspondence between the N moving parts of the controller and the N moving parts of the robot. The image analyzing module is used for performing image analysis to the real-time three-dimensional image of the controller to acquire mobile data of each moving part of the controller. The control module sends an instruction to the robot through a network according to the mobile data of each moving part of the controller to control each moving part of the robot to execute corresponding action. The invention further provides a robot control method.

The invention discloses a slide block type multistage coupling parallel mechanism. The slide block type multistage coupling parallel mechanism comprises a fixed platform, a movable platform, a coupling platform, and three branched chains respectively connected with the fixed platform, the coupling platform and the movable platform and uniformly distributed along the periphery, wherein a first driving rod in the three branched chains for connecting the fixed platform with the coupling platform is connected with the fixed platform and one end of a first driven rod; the other end of the first driven rod is connected with the lower surface of the coupling platform; a first connecting rod is connected with the middle part of the first driven rod and the lower surface of a slide block arranged on the coupling platform; a second driving rod in the three branched chains for connecting the coupling platform with the movable platform is connected with the upper surface of the coupling platform and one end of a second driven rod; the other end of the second driven rod is connected with the lower surface of the movable platform; and a second connecting rod is connected with the middle part ofthe second driving rod and the upper surface of the slide block. The slide block type multistage coupling parallel mechanism increases an extension ratio of a single or multistage coupling parallel mechanism, enlarges working space, reduces the number of driving units, facilitates control during working, and improves rigidity thereof.

The invention discloses a method for forming an external slide rail of a seat of an automobile, which comprises the following steps: (1) putting a workpiece which is already finished in the prior procedure and is to be processed into a special formation concave die; (2) inserting a formation mandrel into an internal cavity of the workpiece which is already finished in the prior procedure and is to be processed; (3) descending a convex die along with a slide block of a punch and punching a workpiece group which is integrally assembled by the workpiece to be processed, the formation mandrel, the concave die and the like, is placed on a support seat and is to be processed; (4) punching and forming the workpiece to be processed after positioning the convex die, wherein the punching shape of the workpiece to be processed is formed by the support of the formation mandrel and the concave die and the extrusion of the convex die; (5) pulling out the convex die; and (6) pulling out the formation mandrel and obtaining a finished product with finished processing. The invention also provides a formation mandrel, a concave die and a convex die which are used for the method. The key of the invention lies in that the formation mandrel is inserted into the workpiece to be processed, then punching processing is carried out, punching force can be completely loaded on the workpiece, and the full and accurate formation of the workpiece is ensured.

The invention relates to the field of engineering bionic technology, in particular to bionic sharkskin making use of a shape memory alloy artificial muscle longitudinally-injected drag reducer. The bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer comprises a supporting base, a hardened conductive layer I, artificial muscle flexible units, a hardened conductive layer II, a shark scale imitation skin layer and a drag reducer longitudinal injection device, wherein each artificial muscle flexible unit comprises a shape memory alloy artificial muscle spring, a pulling head, a two-section electric heating rod and a connection conductive wire, and each shape memory alloy artificial muscle spring has a certain amount of supporting strength. Compared with the prior art, the bionic sharkskin making use of the shape memory alloy artificial muscle longitudinally-injected drag reducer has the advantages that by the adoption of the design of shape memory alloy artificial muscle, a micro mucus secreting mechanism of the sharkskin is simulated by means of the unique material characteristic that the double-trip memory effect is presented under the driving of transformation temperature of the shape memory alloy artificial muscle, the working mode and control method of injecting a micro amount of the drag reducer are more sensitive, controllable and reliable compared with existing means, service life is guaranteed effectively, and a beneficial example is provided for the engineering bionic technology, especially the bionic drag reduction skin manufacturing technology, in the aspect of structure and function bionics.

The invention discloses a raking and flattening plate of a micro cultivator. The raking and flattening plate comprises a main force rod, a connecting plate, a connecting rod, a fixing rod, a branch force rod and a flattening plate, wherein one end of the main force rod is fixedly connected with a mini-tiller; the other end of the main force rod is fixedly connected with the connecting rod in a movable manner; the connecting plate is arranged at the lower end of the connecting rod and fixedly connected with the fixing rod; the fixing rod is fixedly connected with the flattening plate; the branch force rod is arranged on the fixing rod; and one end of the branch force rod is fixedly connected with the middle of the connecting rod. The raking and flattening plate has the advantages as follows: the paddy field can be flattened, the water discharge depth can be conveniently controlled, the final-period management work can be conveniently carried out, and the yield of paddy rice can be increased.

The invention discloses a modern integrated manufacturing device based on process control. The modern integrated manufacturing device based on process control comprises a platform; the upper end faceof the platform is fixedly connected with a supporting table; the upper end face of the supporting table is fixedly connected with a conveying belt; the front side of the supporting table is providedwith a rotary block fixedly connected with the upper end face of the platform; a smashing box is fixedly connected to the left end wall of the rotary block; a smashing space is arranged inside the smashing box; a transmission space is arranged inside the right end wall of the smashing space; and the upper end face of the rotary block is fixedly connected with a lifting block. In work, a rotary motor is linked with a smashing shaft, the rotary motor controls rotation of the smashing shaft in real time, the function of the rotary motor is used in multiple stages, and through a lifting frame anda marking chip, subsequent extraction is facilitated, and the probability of errors is reduced.

The invention relates to a steam cleaner. The steam cleaner comprises a steam generation unit and a support; the steam generation unit comprises a shell, a water tank, a steam boiler and a steam outlet part; a pump is arranged between the water tank and the steam boiler, a valve is arranged between the steam boiler and the steam outlet part, and a first operating switch capable of simultaneously controlling the pump and the valve to be turned on and turned off is arranged on the shell; the support comprises a base and an upright supporting part; the steam generation unit is detachably mounted on the support; a second opening switch for controlling the pump to be turned on and turned off when the steam generation unit is mounted on the support is arranged on the vertical supporting part. As the two operating switches are arranged, the cleaner is highly prone to control the work of the pump and the valve no matter when the steam generation device is taken as a portable cleaning tool or the steam generation unit is mounted on the support as the upright cleaning tool; besides, the steam generation unit is safer when being independently used as the portable cleaning tool.

The invention provides a hydraulic system for an overhead working truck. The hydraulic system for the overhead working truck comprises an oil tank and a hydraulic pump, wherein an oil inlet of the hydraulic pump is connected with the oil tank. The hydraulic system for the overhead working truck further comprises a lower supporting leg hydraulic system, an upper working device hydraulic system, anemergency lowering hydraulic system and an upper-lower selection valve, wherein an oil outlet of the hydraulic pump is connected with an oil inlet of the upper-lower selection valve, a first oil outlet of the upper-lower selection valve is connected with upper working device hydraulic system, and a second oil outlet of the upper-lower selection valve is connected with the lower supporting leg hydraulic system. The emergency lowering hydraulic system is connected with the upper working device hydraulic system. According to the hydraulic system for the overhead working truck, an automatic switching between the lower supporting leg hydraulic system and the upper working device hydraulic system is achieved through the upper-lower selection valve, therefore manual operation is avoided, manpoweris saved, and when the hydraulic system for the overhead working truck breaks down, the emergency lowering hydraulic system can be used for retracting an arm support.

The invention provides a multifunctional impeller aerator for aquaculture. The multifunctional impeller aerator for aquaculture comprises a boss, an oil tank, a blocking block, a pull rod, a scale rod, a floating block, a spring, a reflector, a drawstring and a copper bell, wherein the boss is arranged at the annular side surface of a motor, the oil tank is mounted on the right side of the upper end surface of the boss, and the blocking block is assembled at the inner bottom of the oil tank; the lower end of the pull rod is fixed at the middle of the upper end surface of the blocking block, the scale rod is assembled at the upper end of the oil tank, and the lower end of the scale rod runs through the oil tank and is connected with the floating block; the blocking block is disposed insidethe oil tank; and through the design, the addition amount of gear oil can be controlled conveniently, the spring is mounted on the upper end surface of the floating block, the reflector is assembled on the upper end of the spring, and the drawstring is mounted on the outer surface of the reflector; and the copper bell is assembled on the lower end of the drawstring through screws. Through the design, the function of bird repelling can be achieved, and the aerator has simple operation, convenient control on the addition amount of the gear oil, a good bird repellent effect and high practicability.

Provided is a building with a fire-fighting and rescue function. A rope unwinding device is arranged at a set position above the building and comprises a rope winding barrel, a through inner hole for a rope to penetrate through is formed in the rope winding barrel, and the lower floor or the outside of the building can control the rope winding barrel to rotate.

The invention relates to a numerical control flat tube polisher which comprises a connecting plate, a supporting beam, a pneumatic polisher, a first driving mechanism, a second driving mechanism and a numerical control mechanism, wherein the supporting beam is connected to the connecting plate through a horizontal moving mechanism and can move on the connecting plate in a horizontal direction, the pneumatic polisher is connected to the supporting beam through a vertical moving mechanism and can move on the supporting beam in a vertical direction, the first driving mechanism drives the supporting beam to move in the horizontal direction, the second driving mechanism drives the pneumatic polisher to move in the vertical direction, and the numerical control mechanism controls the first driving mechanism and the second driving mechanism. The invention further relates to a polishing line assembly with the numerical control flat tube polishers. The polishing line assembly comprises a rack, a rolling wheel frame and two numerical control flat tube polishers, wherein the rolling wheel frame is arranged on the rack and used for bearing and conveying a flat tube, and the two numerical control flat tube polishers are arranged on the rack and arranged on the two end portions of the flat tube respectively. The numerical control flat tube polisher and the polishing line assembly with the numerical control polishers can achieve polishing of the coatings of the ends of the flat tube conveniently and efficiently, the working process and the working accuracy of the numerical control flat rube polisher and the polishing line assembly are easy to control, and high use and promotion value is achieved.

The invention relates to a method of credible production and credible sale. The method at least comprises the following steps: printing one-dimensional code or two-dimensional codes and random and discontinuous product identity card codes without repetition on an individual product, a strip of products and a box of products, inputting the product identity card codes to a product data base covering a whole sales area, building a consumed product data base in a system and building a pre-sale enquiry system and an after-sale enquiry system. Compared with the prior art, the random and discontinuous product identity card codes without repetition are printed on the outer packing of products, each individual product, each strip of products and each box of products are enabled to have unique product identity card codes, by building the product data base, sellers can carry out sale feeding back conveniently, consumers can carry out pre-sale enquiry and after-sale enquiry conveniently, the benefits of the consumers and normal manufacturers are guaranteed to a maximum extent, and the work of cracking down on counterfeit goods of a quality supervision department, the right protection work of a consumers association and the regulation work of price control authorities are enabled to be convenient.

The invention discloses a suspension type fishery aquaculture water area clearing pump and belongs to the technical field of cleaning pumps. The floating type fishery aquaculture water area clearing pump comprises a submersible sewage pump body; the lower end of the submersible sewage pump body is connected with a water suction box; the lower end of the water suction box is fixedly connected witha primary filtering plate; the water suction end of the submersible sewage pump body is located in the primary filtering plate; the upper side of the submersible sewage pump body is provided with a filtering and collection boat body; a plurality of uniformly distributed drainage holes are formed in the filtering collection boat body; a filter screen connecting ring is fixedly connected into the filtering and collection boat body; the submersible sewage pump body suspended in water can pump the water into the filtering and collection device; the filtering and collection device filters out and collects suspended granular waste in the water, and therefore, a water area can be comprehensively cleared, and the problem that the suspended granular waste in the water cannot be comprehensively cleaned can be solved, a lot of human resources can be saved, and the health and safety of fishery aquaculture water areas can be ensured.

The invention discloses a conveying device capable of screening square plates. The conveying device comprises a box, wherein a motor is fixed to the upper side of the box; the motor is rotationally connected with a gear; the right side of the gear is in slip connection with a rack; a transverse shaft extending towards the two sides is fixed to the rack; and a cavity is formed in the box. Accordingto the conveying device, needed plates can be screened according to the demand; the plates are conveyed after being piled in order; unqualified plates are treated accordingly at the same time; plateswith insufficient diameters are screened out directly; plates with larger thicknesses are cut off according to the demand; and plates with pits on the surface are subjected to surface grinding. The conveying device is relatively simple in overall structure, operates in a controllable way at relatively higher efficiency, and can enable the plates to be machined and screened in the conveying process.

The invention discloses an efficient SF6 gas processing tool. The efficient SF6 gas processing tool comprises a platy fixed base, a public connecting pipe installed on the fixed base and at least four joints used for connecting SF6 equipment air chambers and vacuumizers, wherein the two ends of the public connecting pipe are closed, at least four connectors are arranged on a pipe body of the public connecting pipe, and the joints are correspondingly connected to the connectors. With the adoption of the efficient SF6 gas processing tool, as a plurality of vacuumizers are connected with the efficient SF6 gas processing tool, air recycling and vacuum pumping are simultaneously carried out on a plurality of air chambers, and working efficiency is greatly improved; in addition, the plurality of air chambers can be inflated by virtue of a plurality of bottles of SF6 or N2 gas, and thus inflation efficiency is improved; structure is simple, manufacturing cost is low, time for processing SF6 during SF6 equipment overhaul and repairing work can be greatly shortened, manpower and material source consumption is saved, and power failure time of equipment is shortened.

The invention belongs to the technical field of computer accessories, and provides a displayer for video live broadcasting. The displayer comprises a displayer shell. A display screen is embedded into a front panel of the displayer shell, and a main circuit is arranged in the displayer shell. An infrared camera and lampshades are arranged at the top of the displayer shell. The extra purchase cost is saved, and the space required by placement is avoided. The infrared camera is fixed to the shell through a metal hose, the metal hose can be bent and turned at will, and adjustment is quite convenient. The lampshades are fixed to rectangular sliding strips through supporting rods, the rectangular sliding strips are arranged in rectangular groove-type electrodes in the top face of the shell in a sliding mode, and the positions of the lampshades are conveniently adjusted by sliding the sliding strips. The infrared camera and the groove-type electrodes are electrically connected with the main circuit of the displayer through corresponding switches on the front panel of the shell, working or stopping can be conveniently controlled, and the displayer is simple and rapid.

The invention provides an air flue mid-set type solid micro-thruster. The air flue mid-set type solid micro-thruster is characterized by comprising a laser, a lens, a combustion chamber, a heat insulation layer, a powder charge, a supporting pipe and a spraying pipe; the laser, the lens, the heat insulation layer and the spraying pipe are sequentially fixedly connected with a radius-matched innerhole in the combustion chamber from left to right; the powder charge is fixedly connected with the interior of an inner hole of the heat insulation layer; the supporting pipe is arranged in an inner hole of the powder charge to form an air channel; and the length of the part, close to one end of the spraying pipe, of the supporting pipe is greater than the length of the powder charge, and the exposed part is fixedly connected with an inner hole of the spraying pipe and communicates with an air flue of the spraying pipe. Through coaxial arrangement of the combustion chamber, the spraying pipe,the powder charge and the laser, a gas channel is arranged in the center of the powder charge, the structure is compact, and the size is small; and the laser irradiates the powder charge so that the powder charge can combust, and the micro-thruster is controllable in work.

The invention relates to the technical field of chemical fiber production equipment, and discloses an automatic control robot for chemical fiber production. The automatic control robot comprises a chemical fiber grabbing robot, wherein the bottom of the chemical fiber grabbing robot comprises a base; a rotating assembly is arranged in the base; the top of the rotating assembly is fixedly connectedwith a machine frame; a power mechanism is arranged on the left side of the top of the machine frame; the two sides of the power mechanism are connected with a mounting frame; the other end of the mounting frame is fixedly connected with the outer side surface of the machine frame; a rotating seat is arranged on the right side of the top of the machine frame; and a mechanical arm is movably arranged on the front surface of the rotating seat. According to the automatic control robot for chemical fiber production, an induction scanner is arranged to be matched with a scanning code arranged on aproduct to carry out induction positioning, so that the operation of a hydraulic rod is conveniently controlled, the product is grabbed through the support of the hydraulic rod and the connection ofa positioning piece, the chemical fiber product is prevented from falling off, and the stability of automatic production of the robot is improved.

Provided is a building. A fine water mist fire fighting device, a supporting platform and a rope descending device are arranged above the building. The fine water mist fire-fighting device comprises an electric pipe winding device, a rubber pipe and a fire-fighting spray gun or a sprayer connected with the rubber pipe. The position above the building or the rope descending device is provided with a pulley, a rope winds through the pulley and forms a first stay cord and a second star cord on the two sides of the pulley, the first stay cord is directly connected with the supporting platform or connected with the supporting platform through an inclined stay cord, a traction rope is connected to one side of the supporting platform, and under the building, the electric pipe winding device can be controlled to rotate and the fire-fighting spray gun or the sprayer and the supporting platform are controlled to descend and extend along the outer side of an outer wall of the building by pulling or dragging the descending second stay cord.

The invention discloses a stable sand washer for mining machinery. The stable sand washer comprises a sand washing device, wherein the front end position of the sand washing device communicates with a conduction device, the sand washing device comprises a rotating structure, a communication pool, an arc-shaped baffle plate and a base frame; the base frame is arranged at the bottom position of the inner end of the sand washing device, and the upper end of the base frame is fixedly connected with the arc-shaped baffle plate; the upper end position of the arc-shaped baffle plate is fixedly connected with the communication pool; the center position of the communication pool is rotationally connected with a rotating structure; the conduction device comprises a transmission port, a swing frame, a communication groove and a driving component; the driving component is arranged at the bottom of the inner end of the conduction device, the top end of the driving component communicates with the communication groove, the upper end position of the driving component is connected with the transmission port in a swinging manner through the swing frame; and the rotating structure comprises a drive component, a belt, a connecting ring frame, a matching limiting plate and a connecting component. Through the arrangement of the sand washing device, inner end sand washing operation is achieved.