1508results about How to "Ingenious structure" patented technology

The invention relates to the technical field of toxic gas monitoring, in particular to a limited space operation environment gas monitoring device which comprises a shell, a controller and an audible and visual alarm, a gas cavity is formed in the shell, a pushing assembly, a detection assembly and a sealing assembly are arranged in the shell, and the pushing assembly comprises an air cylinder, a through hole and a pushing plate; the detection assembly comprises a servo motor and a rotating disc, a plurality of air storage cylinders are arranged on the circumference of the rotating disc, harmful gas sensors are arranged in the air storage cylinders, the sealing assembly comprises a mounting plate and a water through hole, a micro motor, a baffle a and a baffle b are arranged in the mounting plate, an air inlet and a water inlet are formed in the mounting plate, and a piston is arranged in the water through hole. The air cylinder drives the push plate to push air in the air cavity into the air storage cylinder to be detected through the harmful gas sensor, when the push plate descends, the micro motor drives the baffle a and the baffle b to seal the air inlet, and meanwhile, the piston squeezes water in the water through hole into the position between the baffle a and the baffle b to be further sealed, so that the detection result is more accurate.

The drawing head comprises a water outlet main body, a water quantity adjusting part, a flow cutting part and a combination switch assembly. The water outlet body is provided with a water inlet channel, a mounting cavity, a first water outlet channel and a second water outlet channel. A water passing hole is formed in the water inlet channel, and the mounting cavity is provided with a water inlet, a first water outlet and a second water outlet. The combination switch assembly is movably installed on the periphery of the water outlet body, controls the water volume adjusting piece to adjust the size of the water passing hole through rotation action connection and controls the flow cutting piece to form switching action in the installation cavity through pressing action connection. The combination switch assembly arranged on the drawing head can be linked with the two functional modules at the same time, a more compact drawing head is formed, and the problem that when multiple switches are arranged, the product size is large or a water flow channel is small is solved.

The jacking device comprises a jacking assembly and a guiding assembly, the jacking assembly and the guiding assembly are arranged on the side edge of a vehicle, and the jacking assembly and the guiding assembly are connected with the vehicle and a vehicle roof; the jacking assembly is arranged to be matched with the guide assembly, inclined jacking of the car roof tent is achieved, a height space is provided for the tail, and the space utilization rate is increased. By arranging the locking fixing block and the lock catch, complete locking of the jacking mechanism is achieved, a locking mechanism does not need to be additionally arranged, the structure is ingenious, and reliability is high. The bottom sliding rail is provided with the T-shaped sliding part, the lining is arranged on the bottom sliding block, direct contact between the bottom sliding block and the bottom sliding rail is avoided, and abrasion between the bottom sliding block and the bottom sliding rail is reduced. The guide assembly is unfolded obliquely and upwards through a six-connecting-rod structure. The lower connecting rod is provided with a third connecting part, the strength of the lower connecting rod is improved, the folding angle of the lower connecting rod is limited, and reverse clamping during unfolding is avoided.

The invention relates to the technical field of cable deicing, and particularly discloses a caterpillar track rolling type cable deicing device and a control system, the caterpillar track rolling type cable deicing device and the control system can be used for cable deicing work, when a main control board receives an automatic deicing signal, the main control board controls a clamping driving device to drive two chain belts to be clamped in a splayed shape until the two chain belts are clamped in place, and the cable deicing work is completed. The clamping driving device stops driving; the main control board controls the eccentric vibration motor to start, and the other end of the chain belt vibrates in a reciprocating manner towards the cable for deicing so as to perform deicing operation at an initial position; the main control board controls the chain belt driving motor to start, and the chain belt vibrates, rolls and breaks ice while walking along the cable, so that mechanical deicing in the moving process of the caterpillar track rolling type cable deicing device can be realized through crushing and rolling under the condition that ice covering the surface of the cable generates stress fatigue due to mechanical vibration, and the service life of the cable is prolonged. The ice removing device can effectively remove ice with high binding force and thick ice layers such as glaze and mixed rime, and is high in ice removing efficiency and good in ice removing effect.

The invention provides a microwave program-controlled step attenuator. The microwave program-controlled step attenuator comprises a plurality of stages of step length switching units, the stepping length switching unit comprises a straight-through sheet which is fixedly arranged, at least two attenuation sheets which are arranged above the straight-through sheet at intervals, and a group of movable contact springs which are respectively positioned at two ends of the attenuation sheets; each movable contact spring is connected with a push rod which moves along the axis of the push rod and is used for driving the movable contact spring so that the inner end of the movable contact spring can make contact with the attenuation piece or the straight-through piece. The outer end of the movable contact spring is rotatably connected with one end of the fixed contact spring which is fixedly arranged through a rotating column, and the push rod is rotatably arranged around the rotating column corresponding to the movable contact spring connected with the push rod and used for driving the movable contact spring to rotate so that the inner end of the movable contact spring can be switched to correspond to different attenuation slices; and the other end of the fixed reed is rotationally connected with the outer end of the movable reed of the adjacent step length switching unit through a rotating column, or is vertically connected with the radio frequency connector. According to the scheme, multi-step length switching can be achieved, and good stability can be kept on the basis of achieving switching.

The invention discloses a circuit board detection device, which relates to the technical field of detection, and is characterized in that a plurality of guide grooves are formed in the peripheral side walls of a detection table, and the detection table covers the top of a box body; the clamping mechanism comprises four clamping assemblies distributed in the circumferential direction, each clamping assembly comprises a moving plate and a clamping plate which are located at the top of the detection table, the moving plate is connected with a support, the support is in sliding fit with the corresponding guide groove, a threaded rod penetrates through the moving plate in a threaded mode, and the inner end of the threaded rod is rotationally connected with the clamping plate; the regulation and control assembly is arranged in the box body and used for gathering the four supports together. The lifting mechanism is used for adjusting the height of the probe mounting mechanism; the probe installation mechanism comprises a rectangular frame and a probe plate, the probe plate is limited in the rectangular frame through four limiting pieces, and when the limiting pieces rotate to receding grooves in the inner wall of the rectangular frame, the probe plate is disassembled. According to the invention, the clamping mechanism can clamp and fix circuit boards of different sizes, and a probe plate in the probe mounting mechanism can be replaced, so that the circuit boards of different types can be detected.

The utility model relates to the technical field of heat exchange units, and discloses an integrated skid-mounted heat exchange unit which comprises a main body box, one side of the front end of the inner bottom face of the main body box is fixedly connected with a first supporting seat and a second supporting seat, and the lower portion of the front end of the inner wall of one side of the main body box is fixedly connected with a liquid outlet pipe, a first circulating pipe and a liquid inlet pipe. And one side of the front end of the bottom surface in the main body box is fixedly connected with a standby water tank. When the heat exchange unit is used, light energy is converted into electric energy through the solar panel to be stored in the storage battery box, and the electric energy is processed by the inverter to be supplied to power supplies of all parts for use, so that environmental pollution caused by traditional energy is reduced, and the energy utilization efficiency is improved; and cold water in the standby water tank is pumped through the water suction end of the second water pump and conveyed into the liquid inlet pipe through the water outlet end, water cannot be supplied when the water supply system breaks down, and the practical performance is high.

An expressway bridge construction supporting device effectively solves the problems that a rotating shaft is prone to breakage and short in service life. Comprising a bottom plate, a protective plate is rotationally arranged at the end of the bottom plate, a lower supporting column is arranged on the bottom plate, an upper supporting column is arranged on the protective plate, and the protective plate and the bottom plate are vertically fixed after the upper supporting column and the lower supporting column are in butt joint; when the guard plate is perpendicular to the bottom plate, the side face of the guard plate makes contact with the end of the bottom plate, and the end of the bottom plate supports the bottom of the guard plate. The supporting device is simple and ingenious in structure and convenient to use, when supporting is completed, the bottom of the protection plate is supported by the end of the bottom plate, stress of the rotating shaft is reduced, and the service life is prolonged.

The invention relates to a variable-amplitude oil cylinder with a buffering function, and belongs to the technical field of hydraulic oil cylinders, the variable-amplitude oil cylinder comprises a cylinder body, a piston rod and a cylinder cover, a hollow ring is slidably arranged between the cylinder body and the piston rod, a partition plate is arranged in the hollow ring, and the interior of the hollow ring is divided into a liquid storage cavity a and a liquid storage cavity b by the partition plate; a displacement sensor used for monitoring the displacement distance of the piston rod in real time is arranged at the tail end of the cylinder body, a piston is arranged at the tail end of the piston rod, the front end of the piston is connected with a plurality of connecting rods, the front ends of the connecting rods are connected with annular push plates arranged in the liquid storage cavity a in a sliding mode, and when the piston rod stretches out forwards, the annular push plates push liquid in the liquid storage cavity a into the liquid storage cavity b. Reverse thrust of liquid abuts against thrust of hydraulic oil pushing the piston rod, so that the piston rod is buffered, and the piston rod can extend out gently in the starting stage. The problem that when the oil cylinder is started, the piston rod rapidly stretches out to generate shaking and instant impulsive force, and consequently precision mechanical equipment borne by the piston rod is potentially damaged is solved.

The invention provides a powder packaging device and iron phosphate powder packaging equipment thereof. The powder packaging device comprises a support with a negative pressure pump, a material tank, an internal structure of the material tank, a packaging bag opening clamping and adjusting mechanism and a closed packaging mechanism. The material tank is divided into a feeding bin and a storage bin and is provided with a dust filter cartridge, a spiral conveying rod and other parts, and it is guaranteed that powder smoothly enters the storage bin. A packaging bag is automatically clamped and opened by the eccentric clamping shaft and the suction cups on the rhombic frame, and powder filling is facilitated. And after filling is completed, the packaging bag is moved into the fixed cover body, air in the bag is exhausted in an inflation extrusion mode, and heat sealing treatment is conducted through an electric heating sealing strip. In addition, the device is provided with auxiliary functions such as a weighing sensor, a dust removal vibration motor and a spiral dust settling sheet, and a dust removal ring and valve disc mechanism used for controlling opening and closing of a bag opening. According to the powder packaging machine, the powder packaging efficiency and environmental protection performance are improved, the packaging process is simplified, the equipment cost and the space requirement are reduced, and the powder packaging machine is particularly suitable for packaging of powder such as iron phosphate.

A pad printing type re-coating device for the manufacturing process of metal packaging containers. The present invention is to solve the problems that the existing spraying technology will cause air pollution and affect the health of workers, and the brushing will cause uneven re-coating and missing re-coating points. Technical points: The features include a frame, a rotating shaft, a swing arm, a driving arm, a driver, a pad printing cylinder, a pad printing head, a coating tank, a dip plate, a dip plate cylinder and a liquid replenishing tank. The rotating shaft is rotatably matched on the frame, the swing arm is fixed on the rotating shaft, one end of the driving arm is fixed on the rotating shaft, the driver is installed on the frame, and the driver is connected to the other end of the driving arm. A horizontal pad printing cylinder is installed on the inner side of the swing arm, and the pad printing head is installed on the pad printing cylinder and is on the outer side of the swing arm. The coating tank is fixed on the frame, and there is a dip plate that moves up and down at the top of the coating tank. A dip plate cylinder is installed on the frame, and the dip plate cylinder is connected to the top of the dip plate. The dip plate cooperates with the pad printing head. The liquid replenishing tank is installed on the frame and has a coating delivery pipe with the coating tank.

The invention relates to a large glass frame automatic lifting and overturning device which comprises a supporting table, an upper glass frame used for fixing upper glass, a lower glass frame used for fixing lower glass, a lifting driving mechanism used for driving the upper glass frame to ascend and descend and an overturning driving mechanism used for driving the upper glass frame to overturn. And the upper glass is positioned above the lower glass. The lifting and overturning device is ingenious in structure and convenient to operate, the large glass frame body is arranged, an exposure material is placed between the upper glass and the lower glass, and the stability of the exposure material in the exposure process can be effectively guaranteed; by arranging the lifting driving mechanism, rapid separation between the upper glass and the lower glass can be realized, so that the winding and unwinding speed of the exposure material is increased, the probability of splicing, dislocation and other problems of the exposure material is reduced, the waste of the exposure material is reduced, the yield of the exposure process is ensured, the use cost is reduced, and the use experience of a user is enhanced.

The invention relates to an automatic asparagus lettuce harvesting, leaf removing and collecting and storing all-in-one machine which comprises a cutting device, a conveying device, a leaf removing device and a collecting and storing device, and the cutting device comprises a pair of oppositely-arranged cutters, a driving assembly used for driving the cutters and enabling the cutters to achieve staggered rotary movement and a guiding flexible wheel set; the conveying device comprises a lifting flexible wheel set, a side face guide plate and a propelling conveying chain. The conveying device passes through the lifting flexible wheel set, the side face guide plate and the propelling conveying chain. The leaf removing device is mounted at the output end of the conveying device and comprises a stem guide pulley and a leaf removing knife edge; the collecting and storing device comprises an asparagus lettuce collecting box and a push rod lifting table used for driving the asparagus lettuce collecting box to ascend and descend, and the push rod lifting table is installed below the asparagus lettuce collecting box. The all-in-one machine is ingenious in structure and convenient to operate, leaves can be removed in the harvesting process, the asparagus lettuce can be conveniently transported and stored in the later period, the preservation period is prolonged, diseases and insect pests are reduced, economic benefits are increased, and meanwhile labor intensity can be greatly reduced.

The invention discloses high-dispersity modified gold paste mixing equipment for a thermal printing sheet and a process of the high-dispersity modified gold paste mixing equipment, and relates to the technical field of material mixing. Under tightening and clamping of inner and outer barrel walls, four groups of frustum-shaped stirring rods with downward big heads can be gradually folded inwards and block-shaped materials are positioned among the four stirring rods; the four inclined outer walls gradually extrude and push the agglomerated powder which cannot be scattered along with the folding, so that the agglomerated powder is gradually upwards jacked up by the four groups of stirring rods which are gradually drawn close, and the four groups of stirring rods simultaneously rotate and revolve, and the stirring outer barrel is higher than the separation inner barrel, so that the agglomerated powder is separated from the separation inner barrel. Therefore, caked powder or other foreign matters which are gradually jacked up can be gradually thrown into the separation inner cylinder under the action of rotary centrifugation, so that impurities and blocky powder which is difficult to scatter can be discharged through the separation inner cylinder in a self-adaptive manner, and the self-adaptive stirring device is simple and ingenious in structure, strong in functionality and suitable for mixing and stirring various materials.

The invention relates to the technical field of unconventional oil and gas well fracturing tools, in particular to an energy-gathered fracturing tool which comprises an outer cylinder, an energy charging pipe, a gas storage tank, a telescopic sealing assembly and a switching assembly, the energy charging pipe is fixedly installed on the inner side of the upper end of the outer cylinder, and the gas storage tank is sleeved with the position, corresponding to the lower portion of the energy charging pipe, of the outer cylinder; a closed air inlet cavity and a closed air storage cavity are formed in the air storage tank in an up-down spaced mode. According to the energy-gathered fracturing tool, repeated energy charging and fracturing can be achieved, the tool does not need to be lifted to a wellhead for energy charging, energy charging of supercritical carbon dioxide can be completed underground, the operation time is saved, the efficiency is improved, the energy-gathered fracturing tool is provided with the telescopic sealing assembly, the space isolation function is achieved, a packer does not need to be put down, and the cost is reduced. The energy-gathering fracturing tool is ingenious in structure, the gas storage cavity can be expanded through transformation, even if underground energy charging cannot be achieved under the well site condition, multiple times of fracturing can be achieved through one-time energy charging, the lifting frequency is reduced, and the cost is effectively reduced.

The invention relates to a straight seam welding system for pipes, which is provided with a working platform and a rack fixed on the working platform, and is characterized in that the working platform is provided with a feeding station, a calibration station and a welding station, the feeding station is provided with a feeding mechanism capable of feeding, clamping and positioning the pipes, and an outer centering mechanism; the calibration station is provided with an inner centering mechanism, a hanging arm, a hook mechanism and a pipe pushing mechanism, wherein the hanging arm is fixed to the rack and can stretch into a pipe to support the pipe when the pipe is fed, the hook mechanism can be connected with the hanging arm in a matched mode, and the pipe pushing mechanism can push, press and position the pipe on the hanging arm. The piano key pressing plate mechanisms are oppositely arranged on the rack and can abut against the tops of the pipes, and a laser welding mechanism capable of welding weld joints on the pipes is arranged on the welding station; the invention further relates to a welding method, an electronic device and a storage medium. The pipe welding device is ingenious in structure, capable of achieving fast, efficient, stable and accurate welding of pipes, convenient and practical.

The multi-station punching device for aluminum profile machining comprises a base, four supporting columns are fixed to the base, the plane of a hollow polygon prism is provided with a limiting groove set matched with an aluminum profile for placement and matched with a punch for use, and a driving mechanism for driving two conveying pipes to rotate synchronously is installed on a lifting plate. The driving mechanism rotates the hollow polygon prism at a fixed angle and keeps static, one plane of the static hollow polygon prism is opposite to the punch, the driving piece drives the lifting plate to move up and down, and aluminum profiles on the hollow polygon prism can be punched one by one in cooperation with the driving mechanism. The problems that in the prior art, the punching efficiency is low, and potential safety hazards exist are avoided, by arranging the multi-station hollow polygon prism distributed annularly, the overall size of equipment is reduced, and the functions of correcting, limiting, cooling and the like of the U-shaped aluminum gusset plate can also be achieved.

The utility model belongs to the technical field of unmanned aerial vehicles, and particularly relates to an unmanned aerial vehicle hoisting structure, which is characterized in that a rack is matched with a movable hook, so that an unmanned aerial vehicle hoisting device can automatically suspend and release a hoisting box during use, the automation degree of the unmanned aerial vehicle hoisting structure is improved, and the hoisting efficiency of the unmanned aerial vehicle is improved. The working intensity of workers is relieved, meanwhile, the use safety of the unmanned aerial vehicle in the hoisting process is improved, the control assembly has the advantages of being large in transmission ratio, compact in structure and the like through cooperation of the turbine and the worm, the turbine and the worm can be locked in a one-way mode when the motor stops working, large radial and axial loads can be borne, and the safety of the unmanned aerial vehicle is improved. The unmanned aerial vehicle body can better control the direction of the automatic hooking device through the two sets of steel wire ropes distributed in a left-right linear mode, hoisting buckles can be hung more conveniently through the automatic hooking device, the overall weight of the automatic hooking device can be effectively reduced through the hollowed-out design of the triangular through groove, the structural strength can be enhanced, and the wind resistance of the automatic hooking device can be improved.

An adjusting prosthesis effectively solves the problems that when an existing wrist joint prosthesis is used, control and adjustment are inconvenient, and the fixing process is tedious and inconvenient. Comprising a main connecting block, the upper side of the main connecting block inclines in a left-low right-high mode, the upper end face of the main connecting block is an arc-shaped face which is sunken downwards, a hemispherical fixing sleeve is fixed to the lower side in the main connecting block, a sphere is arranged in the fixing sleeve, and the lower end of the sphere extends out of the fixing sleeve and is fixedly provided with a guide cylinder; the outer side of the guide cylinder is sleeved with a plurality of supporting pieces evenly distributed in the up-down direction, the projections of the supporting pieces in the front-back direction can form a big-end-up trapezoid, the projections of the supporting pieces in the up-down direction are oval, a threaded column capable of rotating in the up-down axial direction is arranged in the guide cylinder, and the lower end of the threaded column is in threaded connection with an extension cylinder. The lower end of the extension cylinder penetrates through the guide cylinder; the device is simple in structure, convenient to operate, novel in conception and high in usability.

The invention relates to the technical field of pipe cutting, in particular to a pipe cutting positioning device for PVC (polyvinyl chloride) pipe production, which comprises a processing box, a movable disc arranged at one end of the top of the processing box, a fixed disc arranged at the other end of the top of the processing box, a cleaning disc mounted on one side of the movable disc and a limiting base mounted on one side of the fixed disc, a pushing frame is arranged at the center of one end of the top of the processing box, a movable screw rod is movably arranged at the center of the pushing frame, a movable block is connected to the position, in the movable screw rod, of the pushing frame in a threaded penetrating mode, and a movable disc is fixedly installed at the center of the top of the movable block through a bolt; the fixed disc and the movable disc are each provided with a clamping assembly. The arc-shaped movable groove drives the arc-shaped clamping rod below the pushing plate to move, so that the L-shaped supporting seat on the movable disc drives the arc-shaped side plate of the pushing plate to clamp and fix one end of the pipe body, and clamping and fixing of the two ends of the pipe body are achieved.

The invention discloses a method for realizing intelligent millimeter-level elevation measurement based on a laser technology, which comprises the following steps of: navigating to a measurement point by an intelligent navigation robot according to a measurement task, adjusting a horizontal platform to a horizontal state, and enabling a two-dimensional coordinate of an RTK (Real-Time Kinematic) module to be equal to a two-dimensional coordinate of the measurement point; the intelligent navigation robot drives the light source mounting rod to rotate through the horizontal turntable, so that the laser transmitter searches and aims at the axis of the laser receiving reference rod to project horizontal laser; the AIOT platform notifies the reference rod to move to receive the laser, records a moving distance value output by the incremental encoder and uploads the moving distance value to the AIOT platform; a laser distance measuring sensor is turned on to emit vertical laser to a measuring point, and the measured distance is output and uploaded to the AIOT platform; and the AIOT platform calculates the millimeter-level elevation of the measurement point where the intelligent navigation robot is located through an expression. According to the invention, millimeter-level elevation measurement and automation and digitization of measurement operation can be realized.

The invention relates to the technical field of ecological management, in particular to mud flat spartina alterniflora harvesting and baling equipment and management system.The mud flat spartina alterniflora harvesting and baling equipment comprises a main body, and a harvesting module, a picking module, a baling module, a power system, an ecological restoration module and a discharging and transporting system are arranged in the main body; the harvesting module and the picking module respectively comprise a harvesting assembly and a picking assembly, and the power system is used for driving the harvesting assembly and the picking assembly. The rotary motor serves as a power source to drive the harvesting assembly, the picking assembly and the conveying assembly to work, the structure is ingenious, and electric energy consumption is reduced; the mudflat spartina alterniflora harvesting and baling treatment system has the advantages of being efficient, environmentally friendly and intelligent, and the efficiency problem in spartina alterniflora removal and treatment can be effectively solved.

A rigid-flexible integrated multifunctional lower limb rehabilitation training device comprises a base (100), a flexion and extension support (200), a hip and knee joint flexion and extension autonomous training control mechanism (300), an ankle joint dorsal extension and plantar flexion training mechanism (400), a hip and ankle joint inward and outward rotation autonomous training mechanism (500) and a hip joint adduction and abduction autonomous training mechanism (600). Mainly comprises a flexion and extension hand pull rope (310), a pedal plate (320) and a pedal pull rope (330); a support plate (410) and an elastic member (420); the internal and external rotation training device comprises a support frame (510), an internal and external rotation training arc-shaped track (520), an internal and external rotation roller (450) and an internal and external rotation training pull rope (530), the gear (620) is meshed with the adduction and abduction training arc-shaped track (610), and the adduction and abduction training pull rope (630) is arranged on the adduction and abduction training arc-shaped track (610). The lower limb core muscle group rehabilitation training device integrates multiple modes such as multiple joints, multiple degrees of freedom, passive, assisting and active as soon as possible in the lying position, can simulate gait training in the lying position, and effectively promotes early rehabilitation of a patient.

The present invention relates to a CT-guided tumor ablation scanning positioning and a device for an external fixator for an ablation needle, which is characterized by comprising a transparent adhesive tape and a fixator, wherein the transparent adhesive tape is rectangular and is provided with nine evenly arranged X-ray development positioning lines parallel to the long side direction thereof; a fixator is provided on at least one of the long sides of the transparent adhesive tape, and the fixator comprises a fixing seat and a support rod, wherein the fixing seat is long and fixedly connected to the long side of the transparent adhesive tape, a slide groove is provided in the fixing seat, a slider is installed in the slide groove, and there is friction resistance between the slider and the slide groove; the lower end of the support rod is connected to the slider, and a caliper for holding and fixing the ablation needle is installed at the upper end of the support rod. The present invention has an ingenious structure, a reasonable design, and is easy to use. It can free the doctor's hands during microwave ablation, and can prevent the displacement of the ablation needle to avoid causing serious complications.

The invention relates to the technical field of heavy oil reservoir exploitation, in particular to a device and a method for realizing viscosity-reducing huff-puff exploitation of heavy oil by injecting natural gas into a well and pressurizing. According to the technical scheme, a gas supply pipeline is tripped into an annular space between a sleeve and a pump cylinder, the upper end of the gas supply pipeline is connected with a natural gas injection device on the ground, and the lower end of the gas supply pipeline is communicated with a gas inlet of an underground natural gas booster pump; a gas injection packer is installed on the lower middle side of a pump cylinder, an oil inlet hole is formed in the pipe wall of the lower side of the gas injection packer, and the lower end of the gas injection packer is connected with an underground natural gas booster pump through a transition adapter. The device has the advantages that the pressure of natural gas can be increased in a relay mode, the natural gas is dynamically mixed and dissolved in thickened oil, the viscosity of the natural gas is remarkably reduced, the natural gas is increased along with volume expansion, flowing to a shaft is facilitated, in addition, the foam oil effect can be formed, and the functions of reducing viscosity and increasing yield of a thickened oil reservoir are achieved; and the total operation cost is lower than the steam thermal recovery cost, and the safety is also greatly improved.

The utility model relates to the technical field of shoe supporting frames, in particular to an electric multidirectional gear-shifting shoe supporting frame which comprises a hollow shoe body, a sole shoe tree shell and a heel shoe tree shell, the sole shoe tree shell is formed by combining two half shells and is arranged at the front end of the hollow shoe body in a sliding mode, and the heel shoe tree shell is installed at the tail of the hollow shoe body in a rotating mode. The electric multidirectional gear-shifting shoe supporting frame further comprises an instep shoe tree shell which is movably arranged at the instep position of the hollow shoe body, the length, width and height of the electric multidirectional gear-shifting shoe supporting frame can be conveniently expanded through the arranged multidirectional electric expanding component, so that the requirement of the shoe for adjusting in multiple directions is met more flexibly, and the shoe supporting frame is more convenient to use. The use requirement and the use experience of the user are effectively met; besides, when the multidirectional electric expanding and supporting component is designed, two expanding and supporting modes can be provided by switching gears on the premise of one set of structural design through the unique design of the double-form expanding and supporting component, and the structure is ingenious and practical.

The utility model discloses an unwinding device which comprises a supporting base and a rotating sleeve arranged on the supporting base in a penetrating mode through a bearing, an unwinding rotating disc is fixedly arranged on the rotating sleeve, a plurality of sliding grooves are evenly formed in the outer surface of the unwinding rotating disc in the axial direction, and a fixing block and a sliding block are installed in the rotating sleeve in a front-back mode. The fixing block and the sliding block penetrate through the sliding grooves to extend out of supports corresponding to the sliding grooves respectively, the two supports extending out of each sliding groove are connected with the bottom of an arc-shaped supporting piece through connecting rods respectively, and a sliding block driving rod is arranged in the rotating sleeve in a penetrating mode. Two installation supporting columns are symmetrically arranged on the two sides of the front end of the rotating sleeve correspondingly, and a supporting strip is rotatably connected to the upper portion of the installation supporting column on one side. The unwinding device is ingenious in structure, coil stock can be fixed and prevented from shaking in the unwinding process, unwinding stability is guaranteed, and preparation is made for high-quality production at the rear end.

The invention relates to the technical field of numerical control machine tools, in particular to a machine tool Z-axis brake anti-falling locking mechanism which comprises a saddle, a transmission mechanism is arranged at the top of the saddle, a limiting mechanism is arranged on one side of the transmission mechanism, the transmission mechanism comprises a mounting seat arranged at the top of the saddle, a servo motor is arranged at one end of the mounting seat, and a transmission shaft is arranged at the other end of the mounting seat. The limiting mechanism comprises a rotating shaft rotationally arranged at the top of the saddle and a circular ring in threaded connection with the top of the transmission shaft, the top of the rotating shaft is connected with a limiting piece, one end of the limiting piece is provided with a convex corner, the other end of the limiting piece is provided with a roller, and the roller is attached to the outer side of the synchronous belt a. The rotating shaft is sleeved with a torsion spring, convex teeth are arranged on the outer ring of the circular ring, the servo motor drives the transmission shaft and the lead screw to rotate through a synchronous belt a to achieve movement of the Z axis, and after the synchronous belt a is broken, the torsion spring drives the rotating shaft to rotate to lock the transmission shaft through abutting of convex corners and the convex teeth.