114results about How to "With automatic reset function" patented technology

The invention discloses a variable-track-gauge wheel set and a locking mechanism thereof. The locking mechanism of the variable-track-gauge wheel set is arranged between a wheel hub and a wheel axle and used for locking wheels at different positions of the wheel axle to adjust the distance between the two wheels. A guiding structure for guiding the wheels to move axially is arranged on the wheel axle, and the locking mechanism adjusts the wheels to designated positions and then locks the wheels at the designated positions. On the premise that a variable track gauge is achieved, it is ensured that the wheel set has enough flexibility, reliability and accuracy.

The invention provides a surgical instrument capable of being operated by a single hand. The surgical instrument comprises an actuator, a middle connecting body and a controller. The actuator, the middle connecting body and the controller are sequentially connected. The actuator comprises a nail bin assembly, a nail anvil assembly and a driving assembly. The controller comprises a firing trigger mechanism, a firing safety mechanism and an automatic reset mechanism. The surgical instrument has an automatic reset function; when the firing safety mechanism is not started and a doctor operates a firing trigger, the actuator of the surgical instrument can clamp tissue; when the doctor release the firing trigger, the actuator of the surgical instrument can automatically reset and release the clamped tissue. Due to the function, the surgical instrument enables the doctor to adjust the position, clamped by an anastomat, of the tissue conveniently through a single handle, also enables the doctor to improve the uniformity of the tissue thickness when thick tissue is clamped finally in the mode of repeatedly clamping the same part of the tissue, reduces tissue damage, and accordingly the meshing and cutting effects are improved.

The invention discloses a draw-ring type unlocking device for a photoelectric module. The device comprises a base, a right-handed torsion spring, a left-handed torsion spring, a brake pad, a draw ring and an outer cover, wherein the middle part of the right-handed torsion spring is provided with a round hole; one end of the right-handed torsion spring is provided with a bending leg, while the other end is provided with a stopping leg; the middle part of the left-handed torsion spring is provided with a round hole; one end of the left-handed torsion spring is provided with a bending leg, while the other end is provided with a stopping leg; the base is provided with a semi-circular groove, and the semi-circular groove is provided with a limitation groove matched with the torsion spring stopping legs; the round holes of the torsion springs are sleeved on the rotary shaft on the inner side of the brake pad; the brake pad is provided with a clipping groove matched with the bending legs of the torsion springs and a protruding platform matched with the groove corresponding to the draw ring; and the base is connected with a clipping plate which is provided with a concave pit matched with springs on the upper surface of a cover plate. The device can be conveniently assembled and disassembled completely by a brake device arranged in the module; the assembly of the draw ring is easy, the reliability is high, the draw ring possesses the automatic reset function, and the manual reset is unnecessary; the device can be used as a tail optical fiber type device as well as a plugging type device, and when used as the plugging type device, the device can realize the unlocking under the condition of not pulling out an optical fiber connector, so that the service life of the optical fiber connector is effectively prolonged.

Provided is a novel banana harvesting trolley. The novel banana harvesting trolley comprises a frame, a cutting mechanism and a grabbing mechanism. The bottom of a knife rest of the cutting mechanism is connected to a connection block connected to a sliding block. The sliding block is installed in a sliding groove which is fixed on a second rotary shaft. Two ends of the second rotary shaft are mounted to the top of the frame via a bearing and a bearing seat. A first rotary shaft is installed at the front end of the knife rest via the bearing. One end of a first rotary shaft is fixed with a knife disc and the other end of the first rotary shaft is connected with an output shaft of a first motor via a first driving mechanism. A handle is fixed at the back end of the knife rest. A ladder and an elevating sliding groove are fixed on a belt wheel base plate in order to form a triangular frame. A line roll of the grabbing mechanism is connected to an output shaft of a second motor via a second driving mechanism. One end of a rope is wound to the line roll and the other end of the rope bypasses a fixed pulley to be fixed on a clamping jaw which is installed into the elevating sliding groove. The novel banana harvesting trolley has following beneficial effects: banana pallets are stably elevated; a knife can be electrically driven to cut banana fruit stalks; and the trolley is convenient to operate.

The invention discloses a vehicle-borne dwarf closely-planted jujube trimmer which comprises a bearing vehicle and a jujube trimming device which is installed on the bearing vehicle; and the jujube trimming device comprises a rotary base which is horizontally installed in front of the base of the bearing vehicle and can horizontally rotate, a mechanical arm which is installed on the rotary base and can stretch back and forth and move up and down, a cutter mounting rack which is installed at the front end part of the mechanical arm in a hinge manner, a cutter which continuously rotates under the drive of a cutter drive mechanism, a base drive device which drives the rotary base and a mechanical arm drive device which drives the mechanical arm, and the cutter drive mechanism, the base drive device, the mechanical arm drive device and a cutter mounting rack drive mechanism are all controlled by a control system. The vehicle-borne dwarf closely-planted jujube trimmer has the advantages of simple structure, convenience in operation, high operation efficiency, good use effect and high practicable value, and can be used for overcoming the problems that the existing jujube trimming device is not convenient to use and operate, is labor-wasting and time-wasting, has low automation degree and the like.

The invention relates to an air purifier with automatic reset and moving functions, which includes a main body, an air inlet and an air outlet, and also includes a reset mechanism and a moving mechanism. The reset mechanism includes a telescopic assembly and an adsorption assembly. The moving mechanism includes a control assembly and a moving components. Through the reset mechanism, the air purifier that has fallen to the ground can be lifted up to automatically reset, preventing the effect of air purification from being blocked due to the blockage of the air inlet after the air purifier falls to the ground. Compared with manual reset, it can solve the problem It solves the problem that children and women have limited strength and cannot manually move the air purifier to reset it. It is more convenient. Through the moving mechanism, the moving wheel is controlled to protrude from the inside of the main body to contact the ground, which is convenient for children and women to push the air purifier to move to various places. The position purifies the air, and by accommodating the moving wheels, it can also play a fixed role to prevent the air purifier from sliding, which greatly improves the practicability of the air purifier.

Method of automatic recovering use when money cassette is closed, the method enables the device has automatic recovery function when the machine is closed by accident, after several tentative recovery the closed money cassette is activated automatically, then the money cassette can be used normally again. The invention avoids manual intervention, saves money cassette activation or money transportation by manual initialize device, which reduces people workload and improves utilization ratio of the device at the same time.

The invention provides a one-hand operable surgical instrument and an operation method thereof. The surgical instrument includes an actuator, an intermediate connector and a controller which are connected with one another in sequence, wherein the actuator includes a nail bin component, an anvil component and a drive component; the controller includes a trigger mechanism, a triggering safety mechanism and an automatic reset mechanism. The surgical instrument has the automatic reset function; when the triggering safety mechanism is not opened and a doctor operates the trigger, the actuator of the surgical instrument clamps the tissue, and when the doctor releases the trigger, the actuator of the surgical instrument automatically resets and releases the clamped tissue; such a function of the surgical instrument not only provides convenience for the doctor to adjust the clamping position when using an anastomat to clamp the tissue, but also can improve the thickness uniformity of thick tissue when the tissue is finally clamped through repeatedly clamping the same position of the tissue by the doctor, so that tissue damage is reduced, and the fitting and cutting effects are improved.

Provided is a multi-degree-of-freedom cutting machine. The multi-degree-of-freedom cutting machine comprises a frame, a knife rest, a motor, a connecting block, a driving mechanism, a first rotary shaft, a knife disc, a handle, a sliding block, a chute and a second rotary shaft. The bottom of the knife rest is connected to the connecting block by means of a fastener. The connecting block is connected to the sliding block via a first rotary pair. The chute is mounted to the chute fixed on the second rotary shaft. Two ends of the second rotary shaft are mounted to the top of the frame via a bearing and a bearing seat. The first rotary shaft is installed at the front end of the knife rest. One end of the first rotary shaft is fixed with the knife disc and the other end of the first rotary shaft is connected with an output shaft of the motor via the driving mechanism. The handle is fixed at the back end of the frame. The multi-degree-of-freedom cutting machine has following beneficial effects: a banana fruit shaft is electrically cut via a knife at multiple angles so that working efficiency is further improved; multi-angle flexible operation of a machine is ensured; and the multi-degree-of-freedom cutting machine is easy and reasonable in design structure and cost-effective and endurable and easy to maintain and operate.

The invention discloses an indexing intermittent drive mechanism for intermittent feeding. The indexing intermittent drive mechanism for intermittent feeding is used for solving the problems that an existing intermittent feeding drive mechanism is poor in stability, low in precision, and low in feeding accuracy. The indexing intermittent drive mechanism for intermittent feeding comprises a hinged cam capable of moving in the axial direction. The cam is provided with a conical surface, the flange of the cam abuts against a swinging rod, the lower end of the swinging rod is hinged, the upper end of the swinging rod is hinged to a pawl, a first tension spring is arranged between the end of the pawl and the swinging rod, a first ratchet wheel capable of being meshed with the end of the pawl is arranged at the end of the pawl, the first ratchet wheel is fixedly disposed on a rotating shaft, a second ratchet wheel parallel to the first ratchet wheel is arranged on the rotating shaft, and the flange of the second ratchet wheel abuts against the side of a push rod. The indexing intermittent drive mechanism for intermittent feeding is stable in drive and accurate in feeding.

The invention discloses an anti-islanding grid-connection intelligent switch protection method for a distributed type power supply system and a grid-connection intelligent switch device. The distributed type power supply system is converted into alternating current power through an inverter, and the alternating current power is converted into electric energy of the corresponding voltage level through a transformer and is connected into a power distribution network through a grid-connection switch; the grid-connection intelligent switch protection method comprises the following steps: injecting certain disturbance into the output power, the frequency or the phase of a grid-connection inverter by controlling the grid-connection inverter, and detecting the output situation of the inverter, wherein when a power grid works normally, a disturbance signal cannot change the output characteristic of the grid-connection inverter under the balance action of the power grid; when the power grid fails, the output characteristic of the grid-connection inverter can be quickly accumulated and exceed an allowable range under the feedback action of the disturbance signal; if the output current, the output voltage and the output power, detected by injection of the disturbance signal into the grid-connection inverter, of the grid-connection inverter exceed the allowable range, a signal is generated to trigger a protection device of the grid-connection switch immediately to enable the protection device to trip.

The invention relates to a high-rise tower corridor steel structure which comprises two main steel beams and multiple corridor channel steel beams. The two main steel beams are arranged in parallel, and the corridor channel steel beams are arranged on the two main steel beams, both ends of the main steel beams are arranged on two opposite high-rise towers by a tensile type friction pendulum shock-insulating support in a supporting mode, and expansion joints are arranged between the multiple corridor channel steel beams and the two opposite high-rise towers. The support enables an upper support of the support to be in simple pendulum motion by movement of a spherical sliding surface, the horizontal force of the support is resultant force of friction of the sliding surface and resilience of the upper support rising along a spherical surface, and the resilience resultant force enables the tensile type friction pendulum shock-insulating support to return to the middle position of a spherical structure upon gravity of the main steel beams. The main steel beams have an automatic reset function and cooperate with limiting stoppers to limit the tensile type friction pendulum shock-insulating support or the main steel beams when the main steel beams make any angle deflection in a horizontal peripheral direction, so that the anti-seismic safety support and reset of the main steel beams can be guaranteed and the use safety and stability of a corridor also can be guaranteed .

A multifunctional physiotherapy bed comprises a bed body, a bed body supporting frame, a bed body lifting device, a stretching device, a sliding device, a swinging device, a moxibustion box, a moxibustion smoke storage box and a connection pipe. The top end of the L-shaped supporting frame is rotatably fixed to the bed body, a rotary shaft is arranged on the bottom surface of the bed body, the bed body lifting device is fixed to the bed body through the rotary shaft, and the other end of the bed body lifting device is fixed onto the bed body supporting frame on the lower side of the bed body. The sliding device is arranged at the edge of the outer side of the bed body, and the swinging device and the moxibustion box are arranged on the upper side of the bed body through a fixing seat on the sliding device. The stretching device is arranged on the bottom surface of the bed body and comprises a T-shaped supporting frame and a driving device, and the T-shaped supporting frame is positioned on the outer side of the bed body and connected with a power output end of the driving device. The multifunctional physiotherapy bed integrates six different traditional Chinese medicine physiotherapy functions, has the advantages of being complete in function, simple in operation and obvious in curative effect, and can meet needs of massage, acupuncture and moxibustion and cupping completely and have multiple applications indeed, and the purpose of comprehensive treatment is achieved.

The invention discloses a liquid viscoelastic damper. The liquid viscoelastic damper comprises a damping mechanism consisting of a piston, a piston rod, an end cover, a cylinder and a liquid damping medium, wherein the damping mechanism is connected with an elastic mechanism capable of providing rigid support to the movement of the piston rod; and a connecting mechanism connected with an external building structure is arranged on the elastic mechanism. The liquid viscoelastic damper provides the rigidity support through the elastic force generated by compressing and stretching the elastic mechanism to prevent repeated vibration under the condition of low load, adds a limiting function to restrain excessive displacement under static load, and has an automatic reset function. Secondly, the damping mechanism and the elastic mechanism are in a parallel relationship, and are independent from each other, so that the structure damping calculation can be performed through direct addition, and the use is convenient. The liquid viscoelastic damper retains the damping energy consumption function, overcomes multiple defects of a solid viscoelastic damper, is suitable for being promoted in such engineering as large-span bridges and high-rise buildings, and in particular, is suitable for building engineering with severer external environmental condition.

The invention discloses a multi-way valve for a tractor hydraulic lifter. The multi-way valve for the tractor hydraulic lifter comprises a valve body, wherein an oil inlet cavity, an oil channel A, an oil channel B, an oil outlet cavity A, an oil outlet cavity B, an oil return cavity A, an oil return cavity B and a valve rod are arranged in the valve body, and the valve rod is in hermetic and sliding connection with the valve body; the valve rod is provided with annular grooves corresponding to the oil channel A, the oil channel B, the oil outlet cavity A, the oil outlet cavity B, the oil return cavity A and the oil return cavity B, an operating end of the valve rod is connected with a handle, and a pressurization cavity is further formed in the valve body; when the valve rod slides to the direction of the oil outlet cavity B, the oil channel A communicates with the oil outlet cavity A, and the oil channel B communicates with the pressurization cavity; a hydraulic reset hole is formedin the interior of the valve rod in the axial direction, an inlet end of the hydraulic reset hole communicates with the pressurization cavity, an outlet end of the hydraulic reset hole faces a non-operating end of the valve rod, and a reset device is arranged at the non-operating end of the valve rod. According to the multi-way valve for the tractor hydraulic lifter, automatic reset function is realized in the descending state and the lifting state of an agricultural implement, the valve rod does not need to be manually reset manually, and the operation is convenient.

The invention provides a rain enhancement hail-suppression rocket launcher capable of being locked. A rocket launching device of the launcher and a handheld machine are in wireless remote control communication. Compared with existing wired connecting operation, the links of paying-off and wire inserting are omitted, operation efficiency is greatly improved, and the time of preparation before operation is shortened by at least one minute; a posture locking device is arranged, a transmission mechanism is locked, a transmission clearance can be effectively eliminated, launcher swinging caused by the transmission clearance at the moment of rocket launching is avoided, the rocket launching precision is improved, and the transmission mechanism is protected; a rotary shaft is a hollow shaft, wire penetrating is achieved in the hollow shaft in a hidden manner, damage caused by cable winding and pulling in the direction running process of the launching device is avoided, meanwhile, damage caused by long-term exposure to the sun and rain of cables and rocket tail flame ablation is avoided, and the service life is prolonged; and the automatic reset function is achieved. After operation is finished, the launching device can automatically reset, manual operation and judgment are omitted, and the automation degree is high.

The invention provides a simple online transmission line fault positioning and monitoring system, which comprises a fault detector monitoring a transmission wire. A sphere body is arranged in the fault detector, and the sphere body comprises two hemisphere bodies capable of being opened or closed; the fault detector is provided with a first current transformer and a second current transformer, and each current transformer uses a Rogowski coil which can be opened along with opening of the two hemisphere bodies and closed along with closing of the two hemisphere bodies; when the first current transformer is closed, the first current transformer surrounds the outer side of the wire for power taking; when the second current transformer is closed, the second current transformer surrounds the outer side of the wire for transmission parameter sampling; and the fault detector is provided with a communication unit, and data obtained when the fault detector monitors the wire transmission parameters are transmitted outwardly. Various fault such as inter-phase short circuit and single-phase grounding fault of the transmission system can be detected and positioned.

The invention discloses an electric motor starter with the function of manual turning. A main shaft, a drive gear mechanism, a shifting fork, an electromagnetic relay guide rod and a first return spring are arranged in a shell of the electric motor starter. A gear shifting mechanism comprises a force exertion piece, a normally-closed switch, a locating piece and a first return piece. The force exertion piece extends out of the shell of the electric motor starter to serve as an external force application point and drives the electromagnetic relay guide rod to move rightwards. The normally-closed switch is used for cutting off a power source of the electric motor starter when the force exertion piece moves to the limiting position. The locating piece is used for locking the force exertion piece when the force exertion piece moves to the limiting position. The first return piece is used for automatic return after the force exertion piece is unlocked. Two manners that the transmission mechanism is used for indirect turning for main shaft rotation and a turning tool is used for direct turning for main shaft rotation are adopted in a turning mechanism. On the premise of not influencing the existing function of a traditional electric motor starter, the structure of the electric motor starter is improved, the function of manual turning is added, an engine flywheel gear ring can be accurately located during maintenance, efficiency is improved, and potential safety hazards are eliminated.

The invention discloses an elevator gap inspection device, and belongs to the technical field of elevator inspection devices. The left side of an inspection block body is provided with a first clearance groove, the inner wall of the upper end of the first clearance groove is provided with a front clamping hole and a back clamping hole, inspection steps are slidably connected to the interior of thefirst clearance groove, the upper end of the inspection steps is provided with a groove, a first spring is connected to the interior of the groove in a contact manner, the upper end of the first spring is in contact connection with a clamping rod, the clamping rod is provided with a circular arc end, and the upper end of the clamping rod is connected with the front clamping hole in a clamping manner. According to the elevator gap inspection device, the arranged inspection steps with different heights have a telescoping function, an arranged handle rod also has a telescopic folding function, therefore, the occupation space position of the inspection device can be decreased, and the inspection device can be greatly conveniently moved and carried; the arranged inspection steps and handle rodhave an automatic positioning function, and the using convenience of the inspection device is improved; and in addition, the inspection steps can be quickly disassembled and assembled, and later maintenance of the inspection device is convenient.

The invented equipment is capable of monitoring ground wire, hot wire and zero line fully, preventing reverse connection between hot wire and zero line, automatic resetting, possible to be enbended into diversified electric apparatus, and overcoming disadvantages in current technique. The equipment includes switching circuit, rectifying circuit and relay. Hot wire and zero line connected to power source through rectifying circuit, switching circuit provides power for the relay. After being connected to the relay, then the hot wire, zero line and ground wire are connected to electric apparatus. Based on / off state of ground wire, the switching circuit controls on / off of power source. Monitoring end of the switching circuit is connected to ground wire. The rectifying circuit is utilized to rectify electrical source for supplying power for the relay, which controls on / off of hot wire, zero line and ground wire.

The invention provides an auxiliary brake controller of an automobile. A braking controller is installed on a metal structure in front of a brake pedal at the driver position and is powered by a vehicle-mounted storage battery. A main component for achieving braking of the braking controller is composed of a direct-current motor which can achieve forward and reverse rotating and a high-intensity and low-stretching-rate flexible auxiliary brake rope. When an emergency brake button sends an emergency brake order to the braking controller, a braking controller circuit controls the direct-current motor to rotate so that the auxiliary brake rope can be wound onto a rotary table, and therefore a function of pulling the automobile brake pedal toward the position in front of a driver is achieved, and the emergency brake effect is achieved.

The invention discloses a steering mechanism of a double-front-wheel bicycle, wherein a handle is fixedly connected with a handle shaft, and the handle shaft is installed in a front vertical tube. The steering mechanism of the double-front-wheel bicycle is characterized in that: a front protraction beam is arranged at the lower middle part of the front vertical tube, one end of the front protraction beam is welded with the front vertical tube, the other end of the front protraction beam is welded with a hinge tube, a rotating shaft is installed in the hinge tube and is inclined forwards for an inclination angle of 15 degrees to 25 degrees, the lower end of the rotating shaft is welded with the middle of a front axle, the two end parts of the axle are respectively provided with a front wheel, a return rod is welded at the middle of the front axle, the other end of the return rod is provided with a connection hole, a lug with a lug hole is welded at the front side of the lower end of the handle shaft, one end of a tension spring is connected with the lug at the lower end of the handle shaft through the lug hole, and the other end of the tension spring is connected with the return rod; and a side arm lever is welded at the left side of the lower end of the handle shaft, a connection hole is arranged at the other end of the side arm lever, a connection hole is also arranged in the front axle which is positioned at the same side with the side arm lever, and connection holes are respectively formed in the two ends of the connection rod and are respectively hinged with the connection holes in the front axle and the side arm lever through bolts.

The invention discloses an easy-to-remove heat storage assembly of a heat storage combustion furnace. The easy-to-remove heat storage assembly comprises a heat accumulator, a grate and a hanging basket, wherein the hanging basket is hung to the grate, a storage groove is formed in the grate, the heat accumulator is put at the storage groove, fixed blocks are symmetrically connected to the oppositeside walls close to the bottom position of the heat accumulator, fixed grooves are formed in one end, which is far from the heat accumulator, of the fixed blocks, first springs are connected to the bottoms of the fixed grooves, fixed pins are connected to the other ends of the first springs, a clamping groove is formed in the corresponding wall of the storage groove, one end, which is far from the first springs, of the fixed pins extends outwards into the clamping groove, an abutting block is arranged in the clamping groove, a connecting rod is connected to one end, which is far from the fixed pins, of the abutting block, and one end, which is far from the abutting block, of the connecting rod penetrates through the bottom of the clamping groove and extends to the outer side of the grate.The easy-to-remove heat storage assembly has the advantages of the simple structure and convenience in operation, the heat accumulator is easily and conveniently removed from the grate, time and strength required by removal are saved, and the maintenance and replacement efficiency is improved.

The invention relates to a safety protection tool for engineering, in particular to anti-frog safety goggles. The anti-frog safety goggles comprise a frame and lens placed in the frame, wherein the frame consists of an upper frame and a lower frame encircling each other; and a frog removal mechanism is also arranged on the frame. The anti-frog safety goggles can conveniently drive a brush head tomove up and down along a guide rod by pressing and pulling a button block so as to conveniently and rapidly remove the fog on the lenses of the safety goggles, thereby effectively improving the efficiency for removing the frog on the lenses by an electronic engineer and further effectively improving the work efficiency of the electronic engineer. Additionally, a spring is arranged to achieve the automatic reset function of the brush head, so that the brush head can automatically return to the upper frame so as not to affect the vision range of the safety goggles.

The invention discloses a distributor with an automatic restoring function for a tractor. The distributor with the automatic restoring function for the tractor comprises a valve body, a front cover and a rear cover, wherein a valve rod is arranged in the valve body, and the two ends of the valve rod respectively stretch into the front cover and the rear cover; a handle is arranged on the front cover; a through hole which penetrates through the rear cover is formed in the rear cover, and a balancing guide rod is arranged in the through hole; a radial hole which penetrates through the valve rod along the radial direction of the valve rod is formed in the circumferential surface of the valve rod, and a small steel ball is arranged in the radial hole; a positioning guide seat is arranged in the inner chamber of the valve rod, a guide rod seat in the positioning guide seat is provided with a guide rod, the right side of the guide rod seat is further provided with a conical valve spool; a sealing groove is formed in the end surface, fit with the valve body, of the rear cover, and a special-shaped sealing ring is arranged in the sealing groove. The distributor for the tractor disclosed by the invention can solve the problem that the valve rod is automatically reversed under backpressure, and has the advantages that the valve rod has the automatic restoring function, the restoring reliability is high, the rear cover sealing effect is good, no dust is stuck on the rear cover, the working reliability of the distributor is improved and the like.

The invention discloses a novel advertising lamp box. An insertion groove is formed in the inner side of a lamp box outer frame. A movable plate is inserted in the insertion groove. An outlet is formed in the side edge of the lamp box outer frame. The movable plate within the limited range of the insertion groove can be drawn out of the lamp box outer frame from the outlet. The novel advertising lamp box has the advantages that the insertion groove is formed in the inner side of the lamp box outer frame, the movable plate is arranged in the insertion groove and can be used for arranging an advertising leaflet, and the advertising leaflet can be placed simply by directly inserting the movable plate in the insertion groove; a pulling piece is fixed to the end portion of the pulling-out end of the movable plate; an elastic telescopic band is fixedly connected between the end of the movable plate and the lamp box outer frame, and the movable plate can be taken out conveniently when the advertising leaflet is replaced due to the arrangement of the pulling piece; the movable plate is made to have the automatic restoration function through the arrangement of the elastic telescopic band.

The invention discloses a child safety seat for vehicles that can be flexibly adjusted, comprising a seat cushion, a backrest and a headrest; the headrest is fixed on the upper end of the backrest through an annular belt; The U-shaped fixed sleeve is matched with the sleeve; the tooth plate is arranged on the ring belt, and the tooth plate is distributed close to the back of the backrest. The side of the tooth plate close to the back of the backrest is provided with a rack; the backrest is equipped with a gear groove and a sliding groove of the lock block. , the gear groove and the sliding groove of the locking plate are connected; the gear groove is provided with a gear assembly matching the rack; the locking plate sliding groove is provided with a gear locking device, and the gear locking device includes a gear locking plate, a compression spring The limit cylinder, the connecting rod and the pressure spring; the gear and the gear locking plate are matched and clamped. The invention is used to solve the problem that the height of the headrest of the safety seat cannot be adjusted flexibly in the prior art, and realize the purpose of adjusting the height of the headrest at any time according to children of different heights.

The application of the invention provides a full-automatic airtight drainer for draining by phases and preventing drying, which comprises an outer cavity, a frame, an inner core, a base and a draining pipe, wherein magnetic materials or springs with the same polarity are respectively arranged on the inner core of a floor drain and the base; a water storage cavity is arranged below the inner core;when water flow is small, water in the water storage cavity can flow into the draining pipe; when the water displacement is great, the gravity of the water in the water storage cavity exceeds a repulsive force of the magnetic material or enables the springs to be compressed, the inner core integrally sinks, an inner core cap of the floor drain is opened and then water directly enters the interiorof the outer cavity and is drained through the draining pipe, and thereby the phase type large-area quick draining is realized; and after the draining is ended, the inner core can automatically floatand water seal is realized. The full-automatic airtight drainer for draining by phases and preventing drying adopts the appearance of a plug mesh of a traditional floor drain no longer, so that the attractiveness in appearance is realized; in addition, the full-automatic airtight drainer has the advantages of favorable odor preventing effect, quickness in draining and broad popularization and application prospect.

The invention relates to a navigation device in an orthopedics department and a preparation method of the navigation device. A first movable arm and a second movable arm of the navigation device in the orthopedics department are made of modified polyphenylene oxide plastic which comprises polyphenyl ether, polybutylene, HIPS, LDPE, titanium dioxide, an interfacial modifying agent, a toughening modifying agent, glass fiber, antioxygen and a toner. The preparation method comprises the steps of firstly, conducting forced air drying on polyphenyl ether, polybutylene and HIPS, adding raw materials into a charging barrel after the charging barrel in a high-speed injection molding machine is heated, heating the raw materials into the molten state, then injecting the raw materials to a preheated first movable arm mold and a preheated second movable arm mold in twice through nozzles of a hot flow pass, obtaining the first movable arm and the second movable arm through pressure maintaining, cooling forming and mold opening, and assembling the first movable arm and the second movable arm with other components to form the navigation device in the orthopedics department. The obtained navigation device in the orthopedics department is compact and perfect in whole structure, good in toughness and light in total mass, and the strength of the movable arms is high.

A safety devices includes the switch circu it, the rectification circuit and the relays. The hot wires and neutral wire connected to power source through the rectification circuit and the switch circuits provides electrical power for relays, which then connect to electric equipments. The monitor end of the switch connected to the ground is utilized to control the on / off, of the power source based on the state of the on / off of the grounding wire. The relays control the on / off of the hot wire, the neutral wire connected to the power source and the grounding wire. The invention overcoming the disadvantages in the prior art, has the features of possible to monitor hot wires, neutral wires and grounding wires, preventing reverse connection as well as simple structure, small size and possible to be embedded into electrical appliances.