132results about How to "Easy to operate, safe and reliable" patented technology

The invention discloses a method for retaining a gob-side tunnel, which overall arranges the retaining of the gob-side tunnel in a stope working face gateway tunneling period, and comprises the steps of: combining the stope working face gateway with the gob-side retained tunnel, namely the next section gateway, together to be served as one tunnel for tunneling; and constructing tunnel concrete pier columns between the stope working face gateway and the gob-side retained tunnel, wherein the tunnel concrete pier columns are served as support in the tunnel and also served as one part of the side support for the gob-side retained tunnel; namely comprising the steps of: widening the section of the tunnel by tunneling, reserving the tunnel section according to the shrinkage factor of the god-side retained tunnel suffering from two times of support pressure, and pouring the reinforcing steel bar concrete pier columns in middle of the transverse direction of the tunnel to match with a cable anchor for supporting. The tunnel concrete pier columns are arranged along the whole length of the tunnel at intervals, and used for dividing the tunnel into two parts. Insulating walls are constructed between two adjacent columns after the columns are constructed. When the stope is starting, the support is needed to be temporarily reinforced at two sides of the columns according to requirements along with the advancing of the stope working face. According to the method for retaining a gob-side tunnel, the retaining of the gob-side tunnel and the tunneling of the stope working face gateway are overall arranged, and the tunnel concrete pier column support is arranged; therefore, the side support intensity and support resistance of the retained tunnel are greatly enhanced, the influence of support pressure in two times of mining is effectively controlled. The method for retaining gob-side tunnel is particularly suitable for using in flexible mining faces of bottom plate and / or top plate.

The invention discloses a vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief, which belongs to the technical field of ventilating safety of coal mines and solves the problems that an explosion door fast depressurizes and releases blast air pressure and safely, automatically resets to close the mouth of a well and protects a ventilator device to be safely operated and normally ventilated when downhole blast impacts the mouth of a vertical ventilating shaft. A template pressure relief device and a skylight for a pilot pressure relief device capable of automatically resetting and closing are arranged on the top and a shell surface of the explosion door respectively; the explosion door is provided with four groups of hydraulic cylinders which synchronously move in two directions and are used for pulling and pushing the explosion door to automatically ascend and descend along the cylinders (tracks) and a hydraulic control and electric control system; the explosion door is also provided with a control device for operating a door body lifting hydraulic cylinder in a machine room and a pump station so as to realize natural ventilation and inverted ventilation operation; and a magnet steel sucking skylight is locked to realize inverted ventilation without manual operation. A composite technical system for operation and lifting control of the explosion door is safe and reliable, remote control operation is convenient and rapid, a ventilator is safely operated and ventilated during an accident, and an explosion-proof effect of the explosion door is achieved.

The invention relates to equipment for machining metallic sheet metal pieces, in particular to a flat edge-trimming machine. The flat edge-trimming machine mainly comprises a frame (1), an electrical appliance control box (2) and a braking motor (3) which are arranged in the frame (1), an oil cylinder or cylinder device which is arranged on the upper part of the frame (1), a die assembly (39) which is divided into upper and lower parts, a transmission component which transmits the power of the braking motor (3) to the lower part of the die assembly (39), and a guide oil cylinder or cylinder (35) which ensures that the lower part of the die assembly resets, wherein the transmission component comprises a spindle (8); and the spindle (8) in the transmission component is directly connected with a braking motor shaft (4) on the braking motor (3) through a chain wheel, and the power of the braking motor (3) is transmitted to the spindle (8) after a braking motor shaft single-row chain wheel (5) on the braking motor shaft (4) is engaged with a spindle single-row chain wheel (7) on the spindle (8). The invention is characterized in that the flat edge-trimming machine can trim regularly, is low in cost, and is safe and reliable; and the flat edge-trimming machine can easily remove excess materials on the edges of drawn pieces, so that the processes are simplified, the labor intensity of workers and the machining time are reduced, the production efficiency is improved, and accident work injuries can be avoided.

A therapeutic apparatus for treating intracranial disease by draining cerebrospinal fluid and monitoring injection pressure is composed of puncture needle, built-in tube for lower cavity of lumbar subarachnoid space or brain ventricle, pressure-measuring tube, pressure sensor, controller (YJR instrument), draining and lavation branches, and lavation pump. Its advantages are easy operation and high safety.

The invention discloses a gantry crane device with lengthways and transverse traveling functions. The gantry crane device comprises a main steel girder and a hoisting mechanism, wherein a first auxiliary supporting leg, a first main supporting leg, a second main supporting leg and a second auxiliary supporting leg are arranged on the main steel girder in turn; the roller box traveling direction of the first main supporting leg and the second main supporting leg is vertical to that of the first auxiliary supporting leg and the second auxiliary supporting leg; and the roller box height of the first main supporting leg and the second main supporting leg is different from that of the first auxiliary supporting leg or the second auxiliary supporting leg. The gantry crane device has the advantages of high hoisting capacity, novel concept, and simple structure and is convenient to operate, is safe and reliable and is not affected by a rainy season and a flood season. In the water conservancyproject flood discharge gate hoisting construction technology, compared with the normal large crane, the gantry crane device has great advantages in economy and technology, and can simplify construction procedures to adapt to various hoisting working conditions, speed up a construction progress and highly reduce a safety hazard.

The invention discloses a handheld cutting tool. The handheld cutting tool comprises a main machine shell, a driving device arranged on the main machine shell, a workpiece driven by the driving device, a switch for controlling the driving device, as well as a first handle and a second handle which are arranged on the main machine shell, wherein the first handle is provided with a first trigger device, the second handle is provided with a second trigger device, and the switch can be started only when the two trigger devices are triggered by an operator respectively; and the second trigger device comprises a U-shaped trigger part, the U-shaped trigger part is provided with two end parts, the first end is movably connected to the second handle, the second end is set as a tail free end, and the arrangement of the U-shaped trigger part ensures that the operator can ensure the safe and effective triggering of the switch by holding any gripping part of the second handle.

This invention relates to an electric leakage protection socket, comprising a case in which a pin, a stationary contact chip, a movable contact chip, a magnetic ring, a circuit board, a trip coil, an iron core, a trip mechanism and a reset mechanism are installed; the reset spring is socketed outside the reset rod and the later forms a locating ring at its lower part; the trip mechanism comprises a sliding block, a self-locking plate and a spring, protruding shoulders are arranged on two sidewalls of the sliding block, a contact end of the movable contact chip is pressed against the protruding shoulder, a hole is axially machined on the sliding block, the lower part of the reset rod is inserted in the hole, the self-locking plate is in a shape of ‘7’ whose long edge passes through the transverse hole on the sliding block and has a locking hole matching to the locating ring, and one side of its short edge is pressed against the spring and another side adapts to the iron core. This invention overcome such shortcomings of existing technology as low safety, reliability and sensitivity and increase the sensitivity of the tripping of the electric leakage protection socket so that the equipment can be powered on only if it is started again after recovery of the electricity, with such advantages as simple structure, and convenient, safe and reliable operation.

The invention relates to a multifunctional all-electric nursing bed. The surface of the buttock of the multifunctional all-electric nursing bed is provided with a defecation door hole, the lower side and the defecation door hole are correspondingly provided with a movable defecation door, a bed pan bracket and a linkage mechanism, the movable defecation door is driven by an electric telescopic rod, when the movable defecation door closes the defecation door hole, the bed pan bracket is located outside the position below the defecation door hole through the linkage mechanism correlated to the electric telescopic rod, and when the movable defecation door is opened, the bed pan bracket is located below the defecation door hole, and a bed pan placed on the bed pan bracket is right located in the defecation door hole and is flush with the surface of the buttock. Multiple functions such as back rising, rightward overturning, leftward overturning and leg bending are achieved through the electric telescopic rod. Moving is achieved by pressing a control switch, stopping is achieved by releasing the control switch, the back rising, the rightward overturning and the leftward overturning can achieved at any angle ranging from 0 degree to 90 degrees, and in other words, a patient can stay at any position. Back rising and defecation door opening can be achieved at the same time, or back rising, leg bending and defecation door opening can be achieved at the same time, and the patient can normally relieve himself under the half-lying and half-leaning state or in the sitting posture.

The invention discloses a bottom safe device for an elevator car. The bottom safe device comprises a toe guard, a buffer striking block, a linking mechanism and a toe guard hook, wherein the toe guard is rotationally fixed at the bottom of the elevator car through a first hinge, and has an unfolding state and a folding state; the buffer striking block is rotationally fixed at the bottom of the elevator car through a second hinge and has an unfolding state and a folding state; the linking mechanism is a rigid part; one end of the linking mechanism is connected with the toe guard through a third hinge, and other end of the linking mechanism is connected with the buffer striking block or the bottom of the elevator car through a fourth hinge; due to the linking mechanism, the toe guard and the buffer striking block can be simultaneously positioned in the unfolding state or the folding state; the toe guard hook is fixed at the bottom, close to a car door, of the elevator car; when the toe guard is positioned in the folding state, the toe guard hook hooks the toe guard for keeping the toe guard unchanged in the folding state. The invention provides the toe guard and the buffer striking block which can be synchronously unfolded and folded; the toe guard and the buffer striking block can be applied to the environment of shallow pits.

The invention discloses an underwater intelligent cleaning robot for deep-water cage culture. The robot comprises a streamlined machine body and a flushing bow which is arranged in the streamlined machine body, a monitor is arranged below the flushing bow, a cleaning disc is arranged below the monitor, vertical spraying heads are arranged on the periphery of the cleaning disc, a spraying device is respectively arranged on two sides of the cleaning disc, a horizontal spray head is respectively arranged on each end of the spraying device, a guide tail wing is arranged below the cleaning disc, a umbilical cord hose is arranged below the guide tail wing, and a sliding wing is respectively arranged on each side of the streamlined machine body. According to the robot, a ship is used for supplying high-pressure water flow, power for submerging and cleaning is provided for the robot, and the problem of a complex and expensive electrical appliance is solved. By modifying manual labor into remote control operation, the working efficiency and safety can be greatly improved, the function of underwater monitoring is provided, and a culture situation is enabled to be safer. The entire operation is convenient, safe and reliable, the structure is compact, the carry of a fishing boat is facilitated, and a fisher man is pleasant for accepting the robot.

The invention discloses low temperature cooling equipment by taking a refrigerator as a cold source. The low temperature cooling equipment comprises a hood body provided with a vacuum cavity, a refrigerator and a liquid helium pond, a superfluid helium pond and a sample container arranged in the vacuum cavity. A condenser is arranged on a secondary cold head; the superfluid helium pond is locatedin a position below the liquid helium pond; an accommodating cavity of the liquid helium pond communicates to an accommodating cavity of the superfluid helium pond through a throttling pipeline; the sample container is located in a position below the superfluid helium pond, and the sample container is attached and fixed to the bottom surface of the superfluid helium pond; the equipment also comprises a main air inlet pipeline and a gas circulating pipeline; one end of the main air inlet pipeline is connected to helium supply equipment while the other end of the main air inlet pipeline is connected to the accommodating cavity of the liquid helium pond in a communicating manner; and one end of the gas circulating pipeline communicates to the accommodating cavity of an accommodating cavity ofthe superfluid helium pond while the other end of the gas circulating pipeline is connected to the main air inlet pipeline in a communicating manner. The low temperature cooling equipment disclosed by the invention can acquire 1.8K superfluid helium quickly by means of constant temperature high purity helium, is short in precooling time of a cooled sample and is convenient to cool a device needing an extremely low temperature quickly.

The invention provides an offshore wind powder tower hoisting appliance comprising a main hoisting plate, reinforcing plates and a flange contact plate, wherein the main hoisting plate is fixed at one side of the flange contact plate far from a power tower, the bottom ends of the reinforcing plates are fixed on the flange contact plate and one side of each reinforcing plate is fixed with the main hoisting plate; the main hoisting plate is provided with a main hoisting hole, and a plurality to bolt holes are arranged on the flange contact plate. The hoisting appliance is hoisted after being connected with tower flanges by connecting the bolts, thereby effectively avoiding the deformation and the damage of the tower, has better commonality, safe and convenient operation and convenient disassembly and can be used repeatedly and reduce the construction cost.

The invention discloses a preparation method of polyethylene wax micropowder. The preparation method comprises the following steps of: (1) melting and conveying raw materials, i.e., polyethylene wax feed liquid is prepared by adopting a heating device, the polyethylene wax feed liquid is conveyed to an atomizer inside a spray granulation tower by using a heat-insulation gear pump through a pipeline, and the pipeline and other parts of the atomizer, except a spray hole, need to be subjected to integral heat insulation; (2) compressing and atomizing air, i.e., compressed air provided by an air compressor is conveyed into the atomizer through another pipeline and is matched with the polyethylene wax feed liquid with the pressure, the polyethylene wax feed liquid is sufficiently atomized, and the atomized fogdrops are cooled and solidified into micropowder in the granulation tower; and (3) collecting a product, i.e., the cooled and solidified micropowder is collected by using a collecting device to obtain the product. The invention further discloses a spray granulation system which is used for preparing the polyethylene wax micropowder. The preparation method disclosed by the invention is low in energy consumption, simple and convenient to operate and safe and reliable; and the prepared product has small granularity.

The invention relates to a device and a method for performing tunnel drilling and blasting hole arrangement and rapid lofting and positioning. The device comprises a turnplate. The middle part of the turnplate is vertically provided with a hollow double-thread screw; groove nuts are arranged on the hollow double-thread screw at intervals; arc-shaped supporting plates are respectively arranged in grooves of the groove nuts; an inserted link is inserted into the hollow double-thread screw; the outer end part of the inserted link is vertically provided with a gravity index plate and a staff carriage; a staff pole is arranged in the staff carriage; the inserted link and the hollow double-thread screw are arranged at intervals, and mutually rotate. The lofting and positioning device also comprises a dotting pole; the top end of the dotting pole is provided with a laser pen. The device and the method disclosed by the invention have the beneficial effects that the process of the tunnel drilling and blasting hole arrangement is simplified, the hole arrangement time is shortened, and the operation is simple, safe and reliable. Compared with hole arrangement performed by using a measuring apparatus conventionally, the hole arrangement performed by using the device and the method disclosed by the invention has great technical economic advantages, and the progress of tunnel drilling and blasting excavation construction can be greatly accelerated.

The invention discloses a cantilever type centrifugation supergravity casting device. A rotor system and an upper driving type main shaft composite are installed in an experiment cavity. The bottom ofthe experiment cavity is installed on a device base. A centrifugal host is installed on a lifting system of the experiment cavity and is connected with the upper driving type main shaft composite. The upper driving type main shaft composite is in driving connection with the rotor system. A lifting system is located above the experiment cavity, and the lifting system is connected with an experiment cavity cover. A hanging cup is internally provided with a directional casting system, the hanging cup is internally provided with a heat insulation device, the heat insulation device is internally provided with a heating device, and the heating device is internally provided with a crucible device. The hanging cup is suspended on the end portion of a rotating arm of a supergravity centrifugal machine in a hinged manner through lifting lugs on the two sides. According to the cantilever type centrifugation supergravity casting device, by carrying a high-temperature casting furnace or the directional casting furnace, a supergravity directional solidification function is achieved through a power reducing method in the centrifugal supergravity environment, the key problem that in the supergravity directional solidification process, the temperature gradient is hard to control is solved, and operation is convenient, safe and reliable.

The utility model discloses a rough-terrain wheeled crane of which all actions are driven in a full-hydraulic manner, and the rough-terrain wheeled crane can realize stepless speed change and has stable speed according to different work conditions, has the advantages of small impact, simple chassis arrangement, light complete vehicle weight, and is portable, safe and reliable in operation. The rough-terrain wheeled crane is provided with an electrohydraulic control system, a driving device and a steering device which are used for realizing fast switch among a plurality of driving modes and steering modes, thereby achieving small turning radius, fully exerting the power performances of an engine, improving the fuel oil economy and saving energy resources. The rough-terrain wheeled crane has a special underframe of an integral box type closed structure and is separately and rigidly suspended, an arc-shaped crane arm and an X-shaped telescopic support leg ensure good cross-country performance, mechanical property and working condition adapting performance of the entire rough-terrain wheeled crane during running and operating. The rough-terrain wheeled crane is convenient to maintain, and especially suitable for small construction places such as airports, oil fields, ports, wharfs, storehouses and other building sites.

The invention provides a left ventricular isolation system, a left ventricular isolation device and a conveying device thereof. The left ventricular isolation device comprises a main body stent; the conveying device comprises a push mechanism and a recovery mechanism; the main body stent comprises a stent main body and first and second connecting parts; the stent main body comprises a first proximal end and a first distal end; the first connecting part is arranged at the first distal end; the plurality of second connecting parts are arranged at the first proximal end; the push mechanism comprises a third connecting part which is matched with the first connecting part, so that detachable connection between the push mechanism and the main body stent is achieved; the recovery mechanism is provided with fourth connecting parts which are matched with the second connecting parts, so that detachable connection between the recovery mechanism and the main body stent is achieved; and via the push mechanism and the recovery mechanism, the stent main body is driven to expand towards outer side or fold towards inner side, so that a function of repeatedly locating the left ventricular isolationdevice is achieved, and the accuracy of a release position of the left ventricular isolation device is guaranteed.

A shot blasting rust removal device for buoy accessories comprises a rack, a shot blast cleaning chamber, a blast wheel assembly, a shot-sand distributing system, a lifting hook system, a dust removal system and an electrical control system. The shot blasting rust removal device for buoy accessories is structurally characterized in that the shot-sand distributing system for shot-sand distributing and supplying is borne on the top layer of the rack, the shot blast cleaning chamber is located below the shot-sand distributing system, an outlet of the shot-sand distributing system is connected with an inlet of the blast wheel assembly for carrying out shot blasting work treatment, an inlet of the shot-sand distributing system communicates with a pipeline extending downwards, and a shot-sand conveyor for sucking materials from the outside is arranged at the tail end of the pipeline. The shot blasting rust removal device for buoy accessories has the characteristics of being high in automation degree, capable of achieving pipeline operation, high in production efficiency, good in rust removal quality, low in cost and little in environment pollution.

The invention discloses a method for treating nitrate-containing waste liquid. The method comprises the following steps of: using an electrolytic reaction tank, and arranging an electrolytic separator in the electrolytic reaction tank to form an anode region and a cathode region, wherein the anode region and the cathode region are filled with an anode electrolyte and a cathode electrolyte respectively; the electrolysis separator can effectively reduce or even prevent anions in the cathode electrolyte from migrating to the anode region under the action force of an electric field; and the cathode electrolyte is an acidic solution containing iron ions and nitrate-containing waste liquid. According to the method, iron ions are continuously converted into ferrous ions through electric synergy, so that nitrate radicals are effectively decomposed, and the effect of remarkably reducing or removing the nitrate radicals is achieved; and the treatment method of the nitrate-containing waste liquid is wide in application range and can be used for treating all nitrate-containing industrial waste liquid.

The invention relates to a method for disinfecting surgical instruments for external use. The method comprises the following steps: 1) counting the external instruments and classifying the external instruments, wherein the classification types can be medical tube-type instruments, external instruments which cannot be soaked, and base instruments; 2) respectively cleaning the different types of external instruments in the step 1); 3) disinfecting the different types of external instruments in the step 2); and 4) sterilizing the different types of external instruments in the step 3). The method for disinfecting surgical instruments for external use has the advantages of easy operation, safe and reliable operation, low operation and enforcement cost, convenient usage, short work time, and ideal disinfection effect, is in favor of popularization usage, and can avoid cross infection due to incomplete disinfection of the surgical instruments.

A self-locking power distribution network circuit continuing wire clamp installed by employing a gunshot operation lever comprises an integrated wire clamp main body with a left wire clamping nozzle and a right wire clamping nozzle, and a lower pressing plate (9) and an upper pressing plate (10) which are respectively assembled at the left wire clamping nozzle and the right wire clamping nozzle; the left wire clamping nozzle comprises a bottom plate with a bottom portion rectangular groove (1), a top plate with a top portion semicircle groove (2), an inner side back plate (4), an outer side wire self-locking pressing plate (3) and a lower boss (5) arranged at the bottom surface of the bottom plate, wherein a lifting bolt (11) penetrates from the bottom portion rectangular groove and is connected with the lower pressing plate; the middle portion of the top plate is provided with a notch (6), the wire self-locking pressing plate is installed in the notch through a pivot with a torsion spring; and the right wire clamping nozzle comprises a top plate with a top portion rectangular groove (7) in the nozzle, a bottom plate with a bottom portion semicircle groove (8) and an inner side back plate commonly used with the left wire clamping nozzle, and a locking bolt penetrates from the rectangular groove and is connected with the upper pressing plate. The self-locking power distributionnetwork circuit continuing wire clamp is cooperated with the gunshot operation lever, and is simple to operate and safe and reliable.

The invention provides a stirring machine which is simple in structure, good in material uniform-mixing effect, adjustable in material mixing temperature and material discharging temperature, and high in efficiency. The stirring machine comprises a transmission apparatus, an accepting apparatus and a stirring apparatus; the transmission apparatus and the stirring apparatus are both arranged on the accepting apparatus and are in connection; the accepting apparatus consists of a body sleeve and a tank body; a heating apparatus and a cooling apparatus are arranged between the body sleeve and the tank body; the body sleeve is provided with a support plate; the tank body is connected with a connection plate; the tank body is provided with a flow baffle plate; and the tank body is provided with a filtering apparatus.

The invention provides a two-position double-control combined valve for a hydraulic device, and belongs to the technical field of hydraulic control valves. The main structure of the combined valve is a whole processed by a tetragonal thick cast steel material, oil-way channels which are communicated with each other are processed in a plane of the middle portion of the front part and the rear part of the whole plate, a smooth main through hole for a main oil-way control valve is formed in the connection position of a horizontal plane in the horizontal direction from left to right, wherein the connection position of the horizontal plane is slightly lower than the vertical center. Through holes for various uses are formed in the central plane of the main through hole and are communicated with each other, a pressure gage is installed above a plane body communicated with the through holes, two control rods for operating and rotary pressure adjusting valves are installed on the right side of a main body, wherein the rotary pressure adjusting valves have multiple control functions. The combined valve has the advantages of being simple in structure, convenient to install, simple, safe and reliable in operation, low in manufacturing cost, good in generality, low in oil consumption and the like, and can improve working efficiency and working range of the hydraulic device.

The invention relates to a waste telegraph pole removing machine, and relates to the technical field of power construction equipment. A U-type groove is adopted so that a waste telegraph pole can be removed by the waste telegraph pole removing machine conveniently; pin roll connection is adopted, and therefore all components are more flexible; as a traction frame is adopted, maneuverability of the waste telegraph pole removing machine can be greatly improved to facilitate transportation; a motor and a roller are adopted, and therefore more time and labor are saved when the telegraph pole can be lifted by the waste telegraph pole removing machine; as a tire support is adopted, tires of the waste telegraph pole removing machine can be installed and replaced more safely and reliably; as a control cabinet is adopted, the waste telegraph pole removing machine is more convenient to operate, safe and reliable; as springs are adopted, a pulling-up device can hold the telegraph pole more easily; as sawtooth-shaped protrusions are arranged in a holding ring A and a holding ring B, the telegraph pole can be pulled out more easily by the waste telegraph pole removing machine; as a steel wire sleeve is adopted, the telegraph pole can be lifted more easily by the waste telegraph pole removing machine.

The invention discloses a centrifugal supergravity casting and directional solidification system. A rotor system and a lower drive type main shaft complex are installed in an experiment cavity, the bottom of the experiment cavity is installed on the device base in a buffering mode, a centrifugal main machine is installed on the experiment cavity and connected with the lower drive type main shaft complex, the lower drive type main shaft complex is connected with the rotor system, and a lifting system is located above the experiment cavity and connected with the experiment cavity cover. A directional casting system is arranged in a hanging cup, a heat preservation device is arranged in the hanging cup, a heating device is arranged in the heat preservation device, a crucible device is arranged in the heating device, and the hanging cup is hung at the end of the rotating arm of the supergravity centrifugal machine through lifting lugs on the two sides in a hinged mode. The supergravity directional solidification function is achieved through a power reduction method in the centrifugal supergravity environment by carrying the high-temperature melting and casting furnace or the directional melting and casting furnace, the key problem that the temperature gradient is difficult to control in the supergravity directional solidification process is solved, operation is convenient, and safety and reliability are achieved.

The invention belongs to the technical field of oilfield development and production and relates to a bypass flow guiding sieve tube applied to once multiple gravel pack sand control completion operation. The bypass flow guiding sieve tube comprises a tie-back sealing cylinder, a flat key, a bypass coupling, a base tube, a sealing ring, an upper tie-back sealing joint, a screen assembly and a lowertie-back sealing joint. The bypass flow guiding sieve tube provided by the invention has the advantages that the bypass flow guiding sieve tube is connected to an once multiple gravel pack sand control tube column to satisfy circulating passage demand of packing operation and a slicing mining demand during oil production; the whole set of gravel pack tube column can be simplified; a special assorted tool does not need to be additionally arranged; the mounting and connecting operation is simple and convenient; and the integral operation timeliness can be obviously enhanced.

The invention relates to a fast-throwing tool for a yoke rope. The fast-throwing tool comprises a vertical plate (1), wherein a supporting panel (3) is arranged at the top of the vertical plate (1), a fixed block (4) is arranged on the supporting panel (3), the middle part of the fixed block (4) is hinged with a U-shaped hasp (6) through a first pin shaft (5), the outer end of the fixed block (4) is hinged with an L-shaped reversing hook (9) through a second pin shaft (8), a fixed through hole (10) is formed in the inner end of the L-shaped reversing hook (9), the U-shaped hasp (6) is buckled with the inner end of the L-shaped reversing hook (9), a U-shaped bolt (11) is mounted in the fixed through hole (10) in a penetrating manner, and falling-preventing bolts (12) are arranged at two ends of the U-shaped bolt (11). The fast-throwing tool for the yoke rope is convenient to mount, is simply and safely operated by an operator after the tool enters water, and can be reused, so that the time from ship launching to towing back to the factory is greatly shortened, and the cocking cost of a ship is saved.

The invention discloses a positioning adjustment workbench of a laser scanning detection and servo system, and belongs to the technical field of mechanical and electrical control, and the positioning adjustment workbench is mainly used for solving the problem that an existing positioning adjustment mechanism has a plurality of defects as a result of incapacity of moving in the X-axis direction and the Y-axis direction. The positioning adjustment workbench is mainly characterized by comprising an X-axis moving unit, a Y-axis moving direction, a Z-axis moving direction and a horizontal plane included angle adjusting system; the X-axis moving unit is fixedly connected onto a transverse moving platform and a rack body through two linear slide guide rail pairs; the Y-axis moving unit is fixedly connected onto the transverse moving platform through two linear slide guide rail pairs; the Z-axis moving unit is fixedly connected onto a longitudinal moving platform through a front fixed bearing base and a rear fixed bearing base; and the horizontal plane included angle regulating system comprises part of constituent parts in the Z-axis moving unit. The positioning adjustment workbench has the characteristics of being high in precision, simple and convenient to operate, safe and reliable, and is mainly used as the positioning adjustment workbench of the laser scanning detection and servo system.

The invention discloses a high-voltage lightning arrester defect diagnosis method. The high-voltage lightning arrester defect diagnosis method comprises the steps that 01, various small umbrella skirts in a lightning arrester are taken as measurement points, and the field intensity of each measurement point is acquired; 02, the potential of each measurement point is obtained according to the fieldintensity at the measurement point in the step 01, and then potential distribution of each lightning arrester body is obtained; and 3, the internal insulation condition of the equipment is diagnosedaccording to the potential distribution condition of each lightning arrester body. The invention further discloses a high-voltage lightning arrester voltage allocation measurement device. The high-voltage lightning arrester voltage allocation measurement device comprises a control unit, a field intensity detection unit and an insulating rod; the field intensity detection unit is fixedly installedat the tail end of the insulating rod and used for measuring the field intensity of each small umbrella skirts in the lightning arrester; and the control unit is in signal connection with the field intensity detection unit and used for achieving voltage allocation of the lightning arrester according to the field intensities at the various small umbrella skirts. The method and the device both havethe advantages of being easy and convenient to operate, precise in detection, secure, reliable and the like.

The invention discloses a material performance testing machine system in a centrifugal force-high temperature coupling environment. A rotor system and a lower drive type main shaft complex are installed in the experiment cavity. The bottom of the experiment cavity is installed on the device base through a buffer structure, the centrifugal host is installed on the device base and connected with thelower end of the lower drive type main shaft complex, the lower drive type main shaft complex is connected with the rotor system, and the lifting system is installed on the device base, located abovethe experiment cavity and connected with the experiment cavity cover. A material performance testing system is installed in the hanging cup, the hanging cup is provided with a heat preservation device, the heat preservation device is provided with a heating device, the heating device is provided with a force bearing device, and the hanging cup is hinged to the end of a rotating arm of the supergravity centrifugal machine through a lifting lug. According to the invention, high-throughput testing of material properties such as durability, creep deformation, fatigue and the like in a centrifugalsupergravity environment is realized, and a uniform stress gradient, a non-uniform stress gradient, a uniform temperature field and a non-uniform temperature field can be applied to a sample so as tosimulate the working condition environment of the sample to the greatest extent.