174results about How to "With self-locking function" patented technology

The invention discloses a high-temperature and high-pressure fluid lubrication rotating plane frictional wear testing device, and belongs to the technical field of extreme working condition tribology testing. The device is characterized in that a lifting device and a loading cylinder are simultaneously fixed at the top of a test stand bracket, a piston rod of the loading cylinder is connected with a tension sensor and a water-cooling loading shaft, and the water-cooling loading shaft is connected with a lower sample piece (static ring) in a high-temperature and high-pressure test cavity through a spherical universal joint; the oil-cooling main shaft is fixedly connected with an upper sample piece (moving ring) in the high-temperature and high-pressure test cavity through a locking nut, so that the axial load of the water-cooling loading shaft and the oil-cooling main shaft in a non-concentric state can be uniformly loaded, and the end surfaces of the upper sample piece and the lower sample piece can be automatically attached to each other. The upper part of the high-temperature and high-pressure test cavity is connected with the water-cooling jacket, and the lower part is connected with the bearing cavity. High pressure of the test chamber is guaranteed by a high-pressure water station system, and high temperature is adjusted and controlled by an electric heater and a water cooling jacket. The device can realize the rotary sliding friction wear test of a friction pair in a high-temperature and high-pressure water environment.

The invention provides a vibration measurement device for motor equipment, and relates to the field of vibration measurement, and the device comprises a main body support frame, and the left and right sides of the top of the main body support frame are provided with self-locking worm gears A; a mounting angle adjusting shaft is rotationally mounted on the inner side of the main body supporting frame; self-locking worms A are arranged on the left side and the right side of the mounting angle adjusting shaft; the self-locking worm A is matched and connected with the self-locking worm gear A; guide pieces are arranged on the left side and the right side of the main body supporting frame. A mounting angle adjusting part is arranged in the middle of the mounting angle adjusting shaft; the vibration testing device can test vibration of motor equipment at different installation angles and output angles, the universality and accuracy of the vibration testing result of the device are improved, and the problem that the vibration amplitude of the motor equipment is affected to a certain extent due to installation modes at different angles is solved. And a vibration measurement result obtained by only testing plane installation does not have universality.

The invention provides a double-output air cylinder which comprises a cylinder body, a cylinder cover, a piston, a piston rod and a piston rod. A cavity is formed in the cylinder body, a partition plate is arranged in the cavity, and the partition plate divides the cavity into a front cavity and a rear cavity; the piston assembly comprises a first piston arranged in the front cavity in a sliding fit mode and a piston rod arranged on the head portion of the first piston, and the piston rod extends out of the cylinder body and serves as a first output end. The rotating assembly comprises a rotating assembly body arranged in the rear cavity, a driving shaft is arranged on the rotating assembly body, and the driving shaft penetrates through the partition plate, is in rigid connection with the first piston and can drive the piston rod to rotate in the radial direction. The double-output air cylinder is compact in structure, small in size, capable of adjusting the output shaft at any angle, high in adjusting precision, reliable and stable to use, particularly suitable for mechanical arms of non-standard equipment, and wide in application range, and has a self-locking effect.

The invention discloses a self-locking electric jack with a safety door, which comprises an upper shell, a lower shell, a safety door and a reset bumping post, and is characterized in that the lower shell is arranged below the upper shell; the number of the safety door is at least one, the safety door is arranged on the upper shell and can rotate and reset clockwise and / or anticlockwise on the upper shell, and the safety door is provided with at least one jack; the number of the reset bumping post is at least one, the reset bumping post is fixed on the lower shell and extends to the jack, and when the reset bumping post is not pressed, the reset bumping post blocks the rotation path of the safety door and blocks the rotation of the safety door; and when the reset bumping post is pressed downwards, the reset bumping post is far away from the rotating path of the safety door and allows the safety door to rotate. Therefore, the safety door cannot be rotated, so that the safety door has a self-locking function, and the risk of electric shock is reduced to the greatest extent while the power utilization convenience is not hindered.

The utility model relates to the technical field of automobile part machining, and discloses a turnover automobile part clamping mechanism which comprises a clamping device body, a rotary clamping mechanism is arranged at the top of the clamping device body, and a driving mechanism is arranged at the top of the rotary clamping mechanism. The rotary clamping mechanism comprises a moving assembly and a clamping assembly, the moving assembly is arranged at the top of the clamping device body, the clamping assembly is arranged at the top of the moving assembly, and when the clamping device is used, cylindrical automobile parts of different sizes and lengths can be clamped through the arranged rotary clamping mechanism; according to the machining device for the automobile part, the stability of the automobile part during machining is guaranteed, and in the machining process, the automobile part can be driven to rotate, so that different parts of the automobile part are machined, and the machining efficiency is improved; and the reverse threaded rod drives the bearing seat to move left and right in the sliding groove.

The utility model discloses a hydraulic locking mechanism for a battery module frame and a vehicle body frame of an electric vehicle, and belongs to the technical field of electric vehicle parts. According to the utility model, the piston rod of the hydraulic oil cylinder drives the pressing plate to unlock and lock the battery replacing system; and meanwhile, the unlocking state and the locking state of each locking mechanism can be detected through the hydraulic locking mechanism for the battery module frame and the vehicle body frame of the electric vehicle. The locking device comprises a proximity switch, a locking lower pressing plate is installed outside a cylinder body of an oil cylinder, a locking upper pressing plate is installed at the top end of a piston rod of the oil cylinder, and an upper oil port and a lower oil port of the oil cylinder are connected with an oil supply system. The piston is installed at the lower end of the piston rod through a clamping steel ring, the bottom end of the oil cylinder is blocked through a bottom cover, and the piston divides the oil cylinder into an upper cavity and a lower cavity. The guide post penetrates through the bottom cover, is inserted into the bottom end of the piston rod and is fixed on the bottom cover through a fixing pin. According to the utility model, zero clearance fit between the battery replacement base and the battery pack frame can be ensured. The whole vehicle control is realized through the state of the locking mechanism; in addition, the locking device has a self-locking function, and the unlocking and locking functions can be kept under the condition that power supply of the power source is stopped.

The utility model discloses a quick hard folding door, which relates to the technical field of folding doors and comprises a door frame, a bottom plate arranged at the bottom of the door frame, a mounting shell, a first rotating shaft and a first door plate arranged on the door frame through limiting blocks, a second door plate arranged on the inner side of the first door plate through hinges, and a fixing block and a second rotating shaft arranged on the mounting shell through sliding blocks. The second rotating shaft is rotationally connected with the second door plate, and a two-way screw is further rotationally arranged in the mounting shell. The motor drives the worm to rotate so as to drive the transmission of the worm gear, the rotating shaft and the bevel gear and finally drive the rotation of the two-way screw so as to realize the rapid folding and unfolding of the door plate, the working efficiency is improved, and meanwhile, the worm gear and the worm have a self-locking function, so that the door can be kept in a stable state after being folded; and the electric push rod is used for driving the mounting shell and the door plate assembly on the mounting shell to move front and back in the door frame, and the storage and unfolding operation of the door is facilitated.

The utility model discloses a deflection compensation device for a polygonal flexible bending center. The deflection compensation device comprises a plurality of groups of deflection compensation mechanisms which are arranged in parallel, each group of deflection compensation mechanism comprises a bearing beam, a tension bar and a tension bar telescopic driving device; the bearing beam is arranged between two bearing side plates of the rack; the tension bar is horizontally arranged, the two ends of the tension bar are directly or indirectly connected with the bearing beam and the upper panel of the rack respectively, and the tension bar can axially stretch out and draw back; and the tension bar telescopic driving device is used for driving the axial telescopic motion of the tension bar. According to the utility model, the horizontal load generated by bending can be directly balanced, and the bending force is balanced by using the compensation force. In addition, the device is simple in structure, low in cost, safe, reliable, convenient to adjust and obvious in effect. Furthermore, according to the requirement of an actual use scene, real-time dynamic adjustment can be realized, and a manual adjustment mode with lower cost can also be adopted. Due to the action of deflection compensation, the material cost can be reduced, and the cost is reduced.

The invention relates to the technical field of mine engineering support, and discloses a fixing device for mine engineering support, which comprises a support mechanism used for keeping a connecting assembly stable and preventing surrounding rock in spaces such as roadways or stopes from deforming and collapsing; the connecting assembly is located above the supporting mechanism and used for better bearing and dispersing surrounding rock pressure. The connecting mechanism is arranged on the outer side of the connecting assembly and used for connecting and fixing the connecting assembly to increase stability. The shock isolation mechanism is located above the connecting assembly, and a blocking net is arranged above the shock isolation mechanism and used for reducing the influence of vibration on the stability of the support and the surrounding rock. The supporting support displacement caused by mine vibration is prevented through the shock isolation mechanism, the height of the supporting mechanism is adjusted through the adjusting assembly, the arc plate and the blocking net work cooperatively, fixing is conducted through the expansion screw, the safety accident risk is reduced, the resource utilization efficiency is improved, the cost is reduced, the temperature, humidity and vibration data in a roadway are monitored through the display assembly, and production safety is guaranteed.

The utility model discloses a retractable door shield, which belongs to the technical field of door shields and comprises at least two partition sheets, a connecting component and a ratchet mechanism, and the connecting component enables one partition sheet to be slidably connected with the other partition sheet; at least one rack is arranged on the surface of one partition piece, a through groove is formed in the surface of the other partition piece, a gear is rotatably connected in the through groove, and the gear is meshed with the rack; the ratchet mechanism is arranged in the through groove, connected to the gear and used for driving the gear to move in the first direction. When the ratchet mechanism rotates anticlockwise to a preset angle, the ratchet mechanism is separated from the gear, the gear moves towards the second direction, and under the driving of the ratchet mechanism, the gear drives one partition piece to move towards the first direction, so that the door stop extends; the ratchet mechanism is rotated anticlockwise to a preset angle, so that the ratchet mechanism is separated from the gear, the user can push one partition piece to move in the second direction, the door shield is shortened, and the door shield can be suitable for door openings and aisles with different widths.

The utility model relates to the technical field of hollow glass production, and discloses a hollow glass production positioning device which comprises a positioning device body, a positioning mechanism is arranged at the top of the positioning device body, a jacking mechanism is arranged at the bottom of the positioning device body, and the positioning mechanism comprises a positioning assembly and a moving assembly. The positioning assembly is arranged on the inner side of the moving assembly, the moving assembly is arranged at the top of the positioning device body, when the positioning device is used, through the arranged positioning mechanism, in the glass production process, glass of different sizes can be positioned under the action of a positioning block, the stability of the glass is guaranteed, and the production efficiency is improved. And meanwhile, under the action of a worm gear and a worm, the positioned glass can be driven to turn over, and when the other side of the glass needs to be processed, the glass can be automatically driven to rotate, so that the tedious process that the glass is manually turned over and then fixed by a worker is avoided, and the glass processing efficiency is improved.

The invention relates to the technical field of photovoltaic modules, and discloses a double-sided glass photovoltaic module and a preparation method thereof.The double-sided glass photovoltaic module comprises an operation table, a fixing mechanism is arranged at the top of the operation table, a grinding mechanism is arranged on the rear side of the operation table, a collecting mechanism is arranged at the bottom of the operation table, and supporting legs are arranged at the bottom of the collecting mechanism; the fixing mechanism comprises a first servo motor, the first servo motor is fixedly connected to the right side of the operation table, the left side of the first servo motor is fixedly connected with a bidirectional threaded rod, the left side of the bidirectional threaded rod is rotatably connected to the inner side of the operation table, and the periphery of the bidirectional threaded rod is in threaded connection with a moving seat. Through the arranged fixing mechanism, when a frame fixed to a cut photovoltaic module needs to be polished, the frame can be fixed under the action of clamping plates, and the distance between the clamping plates can be adjusted under the action of a bidirectional threaded rod, a movable seat and a bearing plate.

The utility model relates to a mine blasting perforating machine which comprises an installation machine box, the bottom of the installation machine box is fixedly connected with a plurality of walking wheels, the walking wheels are evenly distributed at the four corners of the bottom of the installation machine box, and one side of each walking wheel is provided with a foot brake. One side of the mounting case is fixedly connected with a fixed handle, the inner side of the mounting case is fixedly connected with a storage battery, the top end surface of the mounting case is rotatably connected with a movable turntable, and the top of the movable turntable is fixedly connected with a hydraulic telescopic rod; in the punching process, the height of the punching drill bit can be adjusted through the hydraulic telescopic rod, the angle of the punching drill bit is adjusted through the worm and gear mechanism, the punching drill bit can be prevented from being turned over in the punching process, the punching work is stable and safe, dust and air can be sucked away in the punching process, and the punching efficiency is improved. Dust is prevented from falling on the surface of the punching motor, and motor damage caused by long-term use is prevented.

The utility model belongs to the technical field of hydraulic oil cylinder disassembly, discloses an auxiliary device for hydraulic oil cylinder disassembly, and aims to solve the problem that a hydraulic oil cylinder cannot rotate along the center line of the hydraulic oil cylinder due to the fact that the conventional auxiliary device for hydraulic oil cylinder disassembly fixes the hydraulic oil cylinder through a fixing component, so that the hydraulic oil cylinder cannot rotate along the center line of the hydraulic oil cylinder when the hydraulic oil cylinder is disassembled. According to the technical scheme, in order to solve the problem that bolts at different positions on a hydraulic oil cylinder need to be disassembled by a user continuously changing the positions, and use is inconvenient, the hydraulic oil cylinder bolt disassembling device comprises a workbench, the workbench is composed of a table top and a plurality of supporting legs, and two vertical plates are arranged on the top face of the workbench. One vertical plate is fixedly installed on one side of the top face of the table top of the workbench, the rotating shaft is arranged, the hydraulic oil cylinder can rotate, bolts at different positions of the hydraulic oil cylinder can be detached conveniently, the locking device can lock the rotating shaft, and therefore when the hydraulic oil cylinder is detached, the hydraulic oil cylinder can be prevented from rotating.

The utility model relates to an in-situ torsion experiment device for X-ray CT (Computed Tomography), and belongs to the technical field of scientific instruments for in-situ torsion experiments for X-ray CT. Comprising a driving assembly, a torque sensor and a clamp assembly. Two ends of a shaft of the torque sensor are respectively connected with the driving assembly and a clamp. The driving assembly comprises a motor, an outer shell, a worm gear and a worm, the worm gear and the worm are rotationally arranged in the outer shell and meshed, the upper end of the worm gear is in key connection with the lower end of the torque sensor, and one end of the worm is connected with the output end of the motor. The driving assembly is stable in transmission during an experiment, has a self-locking function, prevents reverse rotation, improves the detection accuracy, is compact in structure, has a large transmission ratio, is suitable for speed reduction, is low in noise and small in vibration, and effectively prevents the influence on other works in a laboratory.

The invention discloses an electric tool self-locking switch and an electric tool, and relates to the field of small electric tools, the electric tool self-locking switch comprises a shell, a trigger movably arranged on the shell and a safety piece rotationally arranged on the shell, a switch body triggered by the trigger is arranged in the shell, the trigger comprises a first abutting part and a first clamping part, and the first abutting part is connected with the first clamping part. The safety piece is provided with a second abutting part and a second clamping part. The safety piece comprises an abutting position and a continuous triggering position, the safety piece is switched between the abutting position and the continuous triggering position through rotation, and when the safety piece is located at the abutting position, the first abutting portion abuts against the second abutting portion, and the trigger cannot trigger the switch body; when the safety piece reaches the continuous triggering position, the second abutting part and the first abutting part are staggered, the second clamping part and the first clamping part are clamped, and the trigger continuously triggers the switch body. The electric tool adopts the electric tool self-locking switch. The electric tool has the advantages that the safety coefficient is high, and starting of the electric tool caused by mistaken touch is not prone to occurring.

The utility model provides a headrest mechanism can be folded back to electric, including headrest assembly, screw rod drive mechanism, base, rotating shaft and fixed bolster, screw rod drive mechanism and fixed bolster all solid are established on the base, rotating shaft is rotatably connected on the fixed bolster, headrest assembly is fixed on the rotating shaft, screw rod drive mechanism is connected with rotating shaft through connecting rod mechanism, screw rod drive mechanism and connecting rod mechanism are rotatory connection, connecting rod mechanism and rotating shaft are fixed connection, connecting rod mechanism is rotatory connection still on the base, when screw rod drive mechanism drives connecting rod mechanism to move, can drive rotating shaft to rotate back, thereby drive headrest assembly to fold back, the utility model discloses can realize the big angle folding back of headrest assembly, whether the driver needs to adjust the headrest angle in the specific driving scene, or leans back and folds back, the headrest needs to fold back to the rear larger angle to realize the storage, and this structure can provide enough folding range, greatly enhanced the use convenience of headrest.

The invention discloses a grinding device for processing cone crusher liners, belonging to the technical field of cone crusher processing equipment. By setting a grinding frame structure and adjusting a threaded shaft, the inclination angle of a grinding rod can be quickly adjusted. The clamped liner rotates, and the grinding rod contacts the inclined surface of the liner, so that the side of the liner can be ground. The device manually adjusts the inclination angle of the grinding rod to adapt to liners with different inclination angles. The device has a simple adjustment method, is easy to observe and control through manual adjustment, has strong reliability, will not have adjustment failures, and has a low failure rate. The threaded adjustment structure has a self-locking function, and the inclination angle will not change during the grinding process. The device is used for temporary processing and grinding of a small number of liners at construction sites, and has strong economy.

The utility model relates to a server installation device, which comprises a cabinet, a plurality of slots are longitudinally arranged on the inner side wall of the cabinet, the slots are vertically arranged at intervals, a partition plate is movably arranged in each slot, the inside of the cabinet is divided into a plurality of layers of installation spaces by the partitions, and electronic devices are correspondingly arranged in the installation spaces. The interiors of the partition plates are hollow and are provided with a plurality of groups of fixing assemblies; a box door capable of being movably opened and closed is further arranged on the front face of the cabinet, and heat dissipation holes are formed in a back plate and a top plate of the cabinet; the server mounting structure is improved on the basis of an existing server mounting structure, a detachable structure is adopted for fixing, the structure has a self-locking function, the fixing effect of the structure cannot be loosened even if the structure is repeatedly disassembled and assembled, meanwhile, the clamping part of the electronic device can be adjusted according to the specific structure of the fixed electronic device, and the fixing effect of the electronic device is improved. Therefore, the four sides are uniformly stressed, and the installation stability of internal devices is effectively improved.

The invention discloses a novel clinical uterine curettage device for gynaecology and obstetrics, and relates to the technical field of uterine curettage devices, the novel clinical uterine curettage device for gynaecology and obstetrics comprises a handle, a length adjusting mechanism, an angle adjusting mechanism and a rotating mechanism are arranged on the inner side of the handle, a movable cylinder is arranged on the inner surface of the length adjusting mechanism, and a deformation mechanism is arranged at one end of the movable cylinder. According to the novel clinical uterine curettage device for the obstetrics and gynecology department, by arranging the deformation mechanism, the opening amplitude and shape of the deformable curettage ring can be precisely adjusted, the deformable curettage ring is made to adapt to the sizes and shape differences of uterine cavities of different patients, compared with a fixed arc-shaped structure, friction and extrusion generated when the curettage assembly enters the uterine cavity are reduced, the operation entering difficulty is lowered, and the pain feeling of the patients is reduced; the problems that most scraping assemblies of an existing clinically-used uterine curettage device are of a fixed-shape arc-shaped structure, the entering difficulty is increased, the operation time is prolonged, high pain can be brought to a patient, even complications such as uterine cavity mucosa injury can be possibly caused, and postoperative recovery of the patient is affected are solved.

The utility model discloses a crane stand bar base plate with a self-locking function, which comprises a base plate structure, auxiliary support structures are mounted on two sides of the base plate structure, the base plate structure comprises a base plate body with connecting grooves on two sides, matching grooves are arranged on two sides of each connecting groove, and magnet blocks are laid in the matching grooves. Through holes are formed in the two sides of the connecting groove in a penetrating mode, through cylinders are fixedly welded to the connecting groove through the two sides of the outer wall of the base plate body, meanwhile, the through cylinders are in through connection with the connecting groove through the through holes, the interiors of the through cylinders are fixedly connected with one ends of first springs, and the other ends of the first springs are fixed to soil rods in a penetrating mode; and meanwhile, one end of a soil rod penetrates through the through cylinder and the through hole and extends into the connecting groove, the other end of the soil rod extends to the outer wall of the through cylinder to be operated and adjusted, a connecting frame with a sliding groove inside is fixedly welded to the base plate body, and according to the crane supporting foot base plate with the self-locking function, connection and adsorption are achieved through the arranged magnet blocks.

The present invention proposes a servo-driven swing arm, which relates to the technical field of display models. The servo-driven swing arm of the present invention adopts a technical solution including a simulation arm, a quick-change assembly and a servo drive assembly, one end of the quick-change assembly is detachably connected to the simulation arm, the servo drive assembly includes a servo driver, and the other end of the quick-change assembly is transmission-connected to the servo driver, which has the beneficial effects of adjustable swing arm and stable swing arm. The present invention also proposes a model display robot, including the above-mentioned servo-driven swing arm, and also including a trunk, the servo driver is connected to the trunk, and has the beneficial effects of adjustable swing arm and good display effect.

The utility model discloses a bending machine pedal self-locking device, which belongs to the technical field of bending machines, and adopts the technical scheme that the bending machine pedal self-locking device comprises a bending machine pedal body, a locking mechanism is arranged at the top of the bending machine pedal body, the locking mechanism comprises a bearing component and a pressing component, the bearing component is arranged at the top of the bending machine pedal body, and the pressing component is arranged at the top of the bending machine pedal body. The pressing assembly is arranged on the inner side of the bearing assembly, by arranging the bearing assembly and the pressing assembly, the bearing assembly, the pressing assembly and the bending machine pedal body can be combined and moved to a proper working position, so that when the bending machine pedal self-locking device is used, a pedal is generally placed in a closed mode, and the bending machine pedal self-locking device is convenient to use. According to the utility model, the structure is simple, the mistaken touch phenomenon caused by the influence of external factors is prevented, the risk factors during working of a user are reduced, and the self-locking function is realized, so that the user is prevented from forming muscle memory due to too simple operation, the phenomenon that feet are faster than the brain is avoided, and the product is prevented from being damaged by accidental operation.

The utility model relates to the technical field of oil drilling and production flashboard blowout preventers, in particular to a flashboard blowout preventer which comprises a shell and locking assemblies arranged oppositely, each locking assembly comprises a flashboard body and a locking part, and the locking parts are assembled on the flashboard body in a guiding and sliding mode along the face, connected with the locking parts, of the flashboard body. Wherein the face, connected with the locking component, of the gate plate body in at least one locking assembly is a connecting inclined face which forms an included angle with the axis of the tubular column, and the locking component slides along the connecting inclined face in a guiding mode so as to drive the locking component to move when the tubular column is ejected upwards or falls down, so that the locking component is automatically wedged between the gate plate body and the tubular column in a one-way mode. The locking component has a self-locking function, when the clamping constraint force of the pipe column is not reliable, upward and downward one-way automatic wedge-caulking of the pipe column to be locked can be achieved, and therefore it is guaranteed that the pipe column is locked and fixed in the length direction.

The flying wing type rechargeable underwater cruise underwater glider comprises a flying wing type shell, a main pressure-resistant cabin is installed on the top of the flying wing type shell, and a temperature difference energy power generation system, an underwater cruise system, an ocean current energy power generation system and a buoyancy adjusting system are sequentially and symmetrically installed on the two sides of the main pressure-resistant cabin; the ocean current energy power generation system comprises a power generation system, a supporting system and a retractable mechanism, the top of the supporting system is provided with the power generation system, and the bottom is connected with the retractable mechanism; the power generation system comprises an impeller system, and an impeller of the impeller system can stretch out, draw back and be folded. The system can be freely switched among three working modes of underwater gliding, underwater residing and underwater cruising, and tasks can be executed for a long time. According to the flying wing type underwater glider, the running system and the ocean current energy power generation system can be adjusted by the retracting and releasing system to rotate, the appearance of the flying wing type underwater glider is not changed while the underwater residence, cruising and power generation functions of the glider are achieved, and the excellent fluid performance in the gliding working mode is guaranteed.

The utility model discloses a kind of convenient climb nail type rod pieces, including rod body and multiple climb nails, multiple channel steel blocks are installed on the rod body, channel steel block and rod body are formed between all insertion slot, matching positioning block is inserted in insertion slot, connecting port is vertically provided in positioning block, one end of climb nail is all curved downward to form connecting portion, connecting portion is all through connecting port, and all outward protruding to form clamping portion, the outer wall surface of rod body is below channel steel block and is all equipped with clamping groove, clamping groove is all oppositely arranged with clamping portion. The utility model is simple in structure, climb nail, channel steel block all adopt high-strength material, die stamping molding;Climb nail design is in line with ergonomics, simple to install when using, can be directly inserted in the insertion slot of rod piece, without complex tool;And after treading, climb nail has self-locking function, increase safety.

The present invention relates to a multifunctional tooling fixture for micro-milling of micro-small parts. The invention aims to solve the problems of difficulty, low efficiency and difficulty in ensuring clamping quality during micro-milling of micro-small parts. The technical solution adopted by the present invention includes a fixed clamp body and a movable clamp body arranged on a base, the fixed clamp body is provided with left and right tips, a V-shaped block is provided at the left end of the fixed clamp body, a precision jaw plate is provided at the left end of the movable clamp body, a replaceable clamping module is provided between the V-shaped block and the precision jaw plate, and a protruding screw is connected to the right side of the movable clamp body. By turning the handle, the screw can be moved forward or backward, driving the movable clamp body to move forward or backward along the fixed clamp body through a metal guide rail. Through this structure, the clamping of thin plate and block-type micro-small parts can be achieved without using multiple sets of clamps, thereby reducing costs.

The utility model relates to the technical field of bearing machining, and discloses a grinding machine tool for bearing surface machining, which comprises a machine tool body, a grinding mechanism is arranged at the top of the machine tool body, a driving mechanism is arranged on the left side of the grinding mechanism, and the grinding mechanism comprises a first grinding assembly and a second grinding assembly. The first grinding assembly is arranged on the left side of the top of the machine tool body, the second grinding assembly is arranged on the right side of the top of the machine tool body, in the using process, by arranging the grinding mechanism, the outer surfaces and one sides of bearings of different sizes can be ground at the same time in the bearing grinding process, and the grinding efficiency is improved; and under the action of a first air cylinder and a clamping plate, bearings of different sizes can be fixed, the stability of the bearings is guaranteed, and in the process of grinding the outer surfaces, a grinding roller can move left and right according to the sizes of the bearings, and all-directional grinding work is conducted.

The invention relates to the technical field of explosion-proof valves, and discloses an active explosion-proof valve electric appliance control device which comprises an explosion-proof valve body, a monitoring control assembly is arranged on the explosion-proof valve body and used for controlling opening and closing of the explosion-proof valve body, the monitoring control assembly comprises a controller and a monitoring head, and a power opening and closing assembly is arranged on the explosion-proof valve body and used for controlling opening and closing of the explosion-proof valve body. The power opening and closing assembly is used for closing and opening the explosion-proof valve body, the power opening and closing assembly comprises a fixed plate, rotary explosion-proof plates, a sliding column, a control rod, a large gear, a tension spring, a small gear, a worm gear self-locking motor and an electric push rod, and the two rotary explosion-proof plates are arranged in a scissor-shaped crossed mode, so that when the explosion-proof valve body is closed, the explosion-proof valve body can be opened and closed, and the explosion-proof valve body can be opened and closed. The two rotating explosion-proof plates can be closed like scissors, gas can be sheared to a certain degree through the cross closing action, resistance of the closing mode is smaller, and compared with an existing explosion-proof valve which is closed through a single plate, the high sensitivity is achieved, and the operation stability is improved.

The application relates to a double-channel rotating detonation combustion chamber structure with an inlet total pressure adjusting function, which comprises a Tesla valve arranged at the inlet of the rotating detonation combustion chamber, the Tesla valve comprises a shell and a flow channel, the inlet end and the outlet end of the flow channel are respectively provided with pressure adjusting structures, the radial outer side of the flow channel is provided with an injection channel, the injection channel comprises an air outlet channel and a pressurizing channel communicated with the air outlet channel, and the side, away from the pressurizing channel, of the air outlet channel is provided with an opening and closing assembly for opening or closing the air outlet channel, the opening and closing assembly comprises a supporting plate, a plurality of opening and closing doors and a self-locking driving part, and the self-locking driving part is used for synchronously driving the plurality of opening and closing doors to be close to or away from the outlet side of the air outlet channel. The application has the effects that when the rotating detonation combustion chamber is in an air thin belt, the air intake of the air inlet channel is automatically enhanced, the rotating detonation combustion chamber preferentially intakes the air in the air inlet channel, the air supply of the combustion chamber is ensured, and the adaptability and stability of the combustion chamber in different environments are improved.