80results about How to "Realize automatic reset function" patented technology

The invention discloses a multifunctional anti-theft door, which comprises a door plate, an observation hole, a multifunctional anti-theft lock, a door handle, a door frame and a hinge, wherein the right end of the door plate is evenly and equidistantly provided with three hinges, and is fastened to the door frame through the hinge; the observation hole is circular structure and is arranged in theupper end of the middle part of the door plate in embedding mode. When the multifunctional anti-theft lock drives the door handle to be reset and closed, a driving wheel is arranged to synchronouslyrotate a main transmission mechanism; a linkage mechanism is respectively engaged through a second transmission mechanism to push a sealing mechanism outward, and effective sealing is carried out through a sealing strip; when the door handle is rotated at the time of opening the door, the sealing mechanism is automatically stored by a resetting device to avoid friction with a bottom plate; the multifunctional anti-theft door has a certain self-protection function, the problem that the door gap is too large can be effectively solved, the sound insulation capability is improved, and the safety is improved, so that a bad man who wants to carry out theft can do nothing.

The invention relates to the technical field of car chassis, and discloses a car body rolling limiting device and a car adopting the device. The car body rolling limiting device comprises a car frame,a car body, a limiting wheel, a swing rod and a roller. The car body and the limiting wheel rotate together relative to the car frame. The cam profile of the limiting wheel constrains the roller to form two limiting positions of the swing rod, at the right limiting position of the swing rod, the car body rolling work state is kept through electromagnetic pushing force, and at the left limiting position of the swing rod, the rolling lock state is reset by spring tension. An actuator drives the car body to do rolling motion relative to the car frame, any car body rolling angle beta is obtained,and the functions of car body active rolling, left and right limiting car body roll angle limiting and automatic reset of car body roll angle zero returning after failure power off are achieved. Thedevice is applied to car body active rolling when the car turns, so that the car body actively rolls by a certain angle to resist centrifugal force or roll-over force when the car turns or passes through an inclined pavement, and the stable running posture of the car is kept.

The invention relates to a combined type weak-torsion continuous mechanical arm connecting joint, and belongs to the technical field of robots. The combined type weak-torsion continuous mechanical armconnecting joint comprises a ball socket base flange, a ball socket, a spin ball, a spin ball fixing cover, three torsional springs and a spin ball base flange, wherein the ball socket base flange isof a horizontally placed plate-like structure; the ball socket is fixedly installed at a central position of the upper surface of the ball socket base flange; a spherical groove is formed in the topof the ball socket; the spin ball extends into the spherical groove; the spin ball fixing cover is fixedly installed at the top of the ball socket to realize the limiting of the spin ball in the vertical direction; the spin ball base flange is fixedly connected with the top of the spin ball; the three torsional springs are axially and vertically placed between the ball socket base flange and the spin ball base flange; and the three torsional springs are annularly and uniformly around the outer side of the ball socket. According to the combined type weak-torsion continuous mechanical arm connecting joint, combined type installation can be realized, and weak-torsion universal rotation can further be realized.

The invention discloses a two-way automatic reset gate which comprises a gate frame (10), a gate leaf (2) and a rotating shaft (30), wherein the left side and the right side of the gate frame (10) are provided with magnets (40, 50), the left side and the right side of the gate leaf (20) are also respectively provided with magnets (60, 70) corresponding to the magnets (40, 50), and the magnets (60, 70) are attractive to the magnets (40, 50). After a push force or pull force of opening the gate leaf (20) is removed, under the action of the mutual attraction force of the magnets, the gate leaf (2) is pushed to be automatically closed, two-way automatic reset of the gate leaf (20) is realized, and the gate leaf (20) is reset stably and accurately without bounce.

The invention discloses an automatic reset device. The automatic reset device comprises an on / off signal detection circuit, a time-delay circuit and a reset signal output circuit, wherein the on / off signal detection circuit is used for detecting an on signal and an off signal of electronic equipment; the time-delay circuit is connected with the on / off signal detection circuit and is used for delaying time with fixed length when the on / off signal detection circuit detects the off signal and then sending out a notification signal; the reset signal output circuit is connected with the time-delay circuit and is used for outputting a reset signal to a system chip of the electronic equipment after receiving the notification signal. The automatic reset device provided by the invention can solve the problem that the existing electronic products can reset the runaway program only by manually pressing down a mechanical reset press button.

The invention provides a needle rod clutching mechanism of a sewing machine and a double-needle machine and belongs to the technical field of double-needle machines, aiming at solving the problems of an existing needle rod clutching mechanism of the sewing machine that the separation and resetting stability of a needle rod is poor and the needle rod clutching mechanism easily has faults. The needle rod clutching mechanism of the sewing machine comprises a sliding shaft, wherein one end of the sliding shaft is connected with a separation assembly and the other end of the sliding shaft is connected with a resetting assembly; the separation assembly comprises a rotary shaft, a wrench and a supporting plate assembly mounted on a machine head; the wrench is provided with a pulling sheet and a limiting column; a detection assembly is arranged between the supporting plate assembly and the wrench; the detection assembly is used for detecting leftward and rightward swinging of the wrench, generating left and right separation signals and sending the signals to electric control of the sewing machine; the supporting plate assembly is fixedly provided with a driver which is in electric control connection with the sewing machine. The clutching mechanism has the advantages of simple and beautiful structure, convenience for operation, automatic resetting and good separation and resetting stability.

The invention discloses a slope retaining device capable of automatically resetting. The slope retaining device comprises a sliding rail, a top plate which is hinged to the front end of the sliding rail, a movable plate which is hinged to the tail end of the top plate, a movable sliding block which is located on the sliding rail and is capable of sliding relative to the sliding rail, a first connecting rod and a linkage mechanism which is mounted on the sliding rail, wherein two ends of the first connecting rod are respectively hinged to the movable sliding block and the top plate; after rotation of the movable plate, the movable plate is connected with the linkage mechanism and triggers the linkage mechanism to work so that the movable sliding block is fixed on the sliding rail; and the movable sliding block is elastically connected with the sliding rail. According to the slope retaining device capable of automatically resetting provided by the invention, the automatic fixing of rearwheels of a vehicle after the vehicle is parked can be achieved, and the vehicle is prevented from slipping backwards on a slope.

The invention discloses a distributor for a tractor. The distributor comprises a valve, a front cover and a rear cover. A valve rod is arranged in the valve, and the two ends of the valve rod stretch into the front cover and the rear cover respectively. A handle is arranged on the front cover, a through hole penetrating through the rear cover is formed in the rear cover, and a balance guide rod is arranged in the through hole. A radial hole penetrating through the valve rod in the radial direction of the valve rod is formed in the circumferential face of the valve rod, and a small steel ball is arranged in the radial hole. A positioning guide base is arranged in an inner cavity of the valve rod, a guide rod is arranged on a guide rod base in the positioning guide base, and a cone valve element is arranged on the right side of the guide rod base. A special-shaped sealing ring is arranged in a sealing groove in the rear cover. A second-level guiding body is arranged on the peripheral face of a middle connecting body of a one-way valve element. The distributor has the advantages that the problem of automatic valve rod reversing in the back pressure process can be solved, the automatic valve rod reset function is achieved, resetting is reliable, the sealing effect of the rear cover is good, staining of dust does not exist, the service life of a one-way valve is long, and working reliability is high.

A pressure releasing automatic reset air shaft anti-explosion cover relates to the field of ventilating safety of a coal mine and comprises a well lid arranged on a well mouth; at least two guide sleeves are connected to the outer peripheral edge of the well lid; a guide pillar is arranged in each guide sleeve in a penetrating mode; an elastic limiting block is arranged at the top end of each guide pillar; an upright pillar and a pressure releasing device are connected to the middle above the well lid; each pressure releasing device is respectively connected with a locking mechanism and comprises a pressure releasing drum; a cover door is hinged above each pressure releasing drum; an air spring is hinged into each pressure releasing drum; the telescopic end of each air spring is hinged to the inside of the corresponding cover door; the air springs are hinged onto the upright pillar; the telescopic end of each air spring is respectively hinged to the outside of the corresponding cover door; at least two hydraulic lifting machines are connected below the well lid; travel switches are connected onto the upright pillar; when being opened, each cover door makes contact with the corresponding travel switch and the hydraulic lifting machines are started to work. The pressure releasing automatic reset air shaft anti-explosion cover is safe and reliable.

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 fire blast driven rigid-flexible coupling frog-imitating robot, and belongs to the field of soft jumping robots. The problems that the jumping posture and the landing direction of an existing soft bouncing robot are uncontrollable, and landing is unstable are solved. The explosion energy release principle of hydrogen and oxygen is applied, energy release is achieved in the mode that the soft explosion cavity and rigid piston type constraint are combined, chemical energy can be converted into mechanical energy in a short time, the large instantaneous acceleration of the robot can be achieved, and meanwhile through rigid piston type constraint, the expansion direction of the soft body burning and explosion cavity is controlled, so that the jumping direction and posture of the robot are controlled. The fire blast driven rigid-flexible coupling frog-imitating robot is suitable for the technical field of bionic robots.

The invention relates to a foldable three-wheel transportation tool with an automatic reset steering component. The foldable three-wheel transportation tool with the automatic reset steering component comprises a handle bar (15), a saddle (2), pedals (5), rear wheels (11), a front frame (4-1), a rear frame (4-2) and the steering component (16) connected between the front frame (4-1) and the rear frame (4-2), wherein the steering component (16) comprises a rotating shaft (16-9), a bearing seat (16-7), a shaft fixing piece (16-10), two deep groove ball bearings, an elastic steel piece (16-15) and two fixing piece L-shaped elastic steel piece fixing pieces (16-1, 16-13), the rotating shaft (9) is fixedly connected with the bearing seat (16-7) through the deep groove ball bearings, the deep groove ball bearings (16-5) are installed in the bearing seat (16-7), and the shaft fixing piece (16-10) is installed on the rotating shaft in a located mode; the elastic steel piece (16-15) penetrates through the rotating shaft (16-9). The foldable three-wheel transportation tool with the automatic reset steering component has the advantages that the radius of a turning circle is small, the side turning is not prone to occurring, the stability is good, and the foldable effect is achieved.

The invention discloses a water faucet capable of saving water through lifting-handle time-delay automatic closing. The water faucet comprises a main body, a main body shell, a handle arranged on the main body, and an automatic reset time-delay device which is arranged in the main body shell and is connected with the handle, wherein the automatic reset time-delay device comprises a transmission rod connected with the handle, a valve rod connected with the transmission rod, a damper connected with the valve rod, a spring sleeved on the transmission rod, and a water sealing sheet arranged at a driven end of the valve rod; a water inlet passage, a water outlet passage and a water guide stand are also arranged in the main body; a water guide outlet of the water guide stand is communicated with the water outlet passage; and the water sealing sheet is arranged between the water inlet passage and a water guide inlet of the water guide stand. The structure of the water faucet can achieve the aim of manual opening or closing, or automatic closing when the faucet is forgotten to be closed; and the handle synchronously returns to the original position along with the closing time, so that a function of automatic reset is realized.

The invention discloses a waste collection device for an operating room. The waste collection device comprises a shell, the shell is internally provided with a first drawer, a second drawer and a third drawer sequentially from right to left, upper ends of the first drawer and the second drawer are provided with a first slide rail and a second slide rail, the upper end of a fixing plate is fixed tothe inner top end of the shell, and the upper top end of a first retaining plate is fixed to the fixing plate through a torsional spring while the other end of the first retaining plate is closely attached to the side wall of the shell. One end of a second retaining plate is fixed to the fixing plate while an elongated hole is formed between the other end of the second retaining plate and the inner wall of the shell, and the first retaining plate and the second retaining plate are inclined plates. Automatic classified collection of waste articles is realized by quality and shape feature differences of gauze, syringes and glass medicine bottles, and classified treatment performed by cleaning personnel after operation is avoided. The first drawer is internally provided with a partition plate to prevent breakage of the glass medicine bottles in high-speed falling from the first slide rail into the first drawer.

The invention discloses a press-fit type unlocking device and an RJ45 port SFP (Small Formfactor Pluggable) module, and relates to a module for optical communication. The press-fit type unlocking device comprises an RJ45 connector (1), a tilting plate (2), a buckle (3), an RJ45 connector moving cover (6), a rotating shaft (7), a left screwing spring (8) and a right screwing spring (9); a round pin (14) on the RJ45 connector (1) sleeves with a pin hole (33) in the buckle (3) to form a base; a pushing rod cavity (66) in the RJ45 connector moving cover (6) sleeves a pushing rod (21) on the tiling plate (2) to form an RJ45 connector with an unlocking mechanism. Compared with the prior art, the unlocking device has the advantages that the size of the head part of the RJ45 port module can be greatly reduced, and thus the problem of compatibility in high-density inserting and drawing can be solved; the unlocking device and be stable and reliable to act, and the automatic restoring function is achieved; meanwhile, the structure is simplified, the arrangement area of a PCB is increased, and as a result, the stability of the model process is improved, and the cost is reduced.

The invention provides electric bicycle outdoor protective type safety charging equipment and a use method thereof. The electric bicycle outdoor protective type safety charging equipment comprises a charging pile, a main control box and a protective stopping rod, wherein the main control box is arranged on the charging pile; the protective stopping rod is arranged on the charging pile through a rotary limiting mechanism; the rotary limiting mechanism comprises a main shaft and a limiting rotating wheel; the main shaft is mounted in the charging pile in a rotatable manner; one end of the main shaft extends out of the charging pile to be fixedly connected with one end of the protective stopping rod; the other end of the main shaft is fixedly connected with the limiting rotating wheel; a stopping pin is arranged under the limiting rotating wheel; an electromagnetic lock is arranged on the side surface of the limiting rotating wheel; the electromagnetic lock is in communication connectionwith the main control box to receive and execute a control command of the main control box; and a first limiting gap is formed in the outer edge of the limiting rotating wheel. The electric bicycle outdoor protective type safety charging equipment and the use method thereof have the advantages of scientific design, strong practicability, high protective effect and low production cost.

The invention relates to the field of packing equipment, in particular to a winding and packing device for pipes. The winding and packing device comprises a support, a sliding frame and a fixing frameare correspondingly arranged on the two sides of the inside of the support, a driving gear and a plurality of driven gears meshed with the driving gear are arranged on the fixing frame, driven shaftsare arranged on the driven gears in a penetrating mode, the driven shafts penetrate out of the fixing frame and are connected with pipe clamping devices, the sliding frame is provided with movable end rotating shafts, the movable end rotating shafts penetrate out of the sliding frame and are connected with pipe clamping devices, rolling wheels are arranged on the sliding frame, rolling wheel groove are formed in the support, the rolling wheels on the sliding frame are embedded in the rolling wheel grooves in the support, a ball screw pair parallel to the axes of the driven shafts is connectedbetween the driving gear and the support, the ball screw pair is provided with ball nut, and the ball nut is provided with a winding belt fixing device. According to the winding and packing device for the pipes, the plurality of pipes can be wound and packaged at the same time, and compared with a traditional pipe winding and packing machine, the processing efficiency is high, the production efficiency of an enterprise is improved, and the production cost of the enterprise is reduced.

The invention discloses a push rod mechanism with an automatic retraction function, and belongs to the technical field of extension and retraction mechanical structures. A push rod of the push rod mechanism can be automatically retracted after being extended. The technical scheme mainly includes that the push rod mechanism comprises a shell (1), a driving wheel (2), a driving gear (3), the push rod (4) and a mounting shaft (5); the mounting shaft (5) is fixedly mounted on the shell (1), and the driving wheel (2) and the driving gear (3) are mounted on the mounting shaft (5); a rack (41) is arranged on the push rod (4), and the driving gear (3) meshes with the rack (41), so that the push rod (4) can be driven to be longitudinally extended and retracted; the driving gear (3) can move on themounting shaft (5) along the axial direction of the mounting shaft (5), so that the driving gear (3) and the driving wheel (2) can be clamped with each other and can be separated from each other; thedriving gear (3) and the driving wheel (2) can be automatically reset after being separated from each other. The push rod mechanism has the advantage that the push rod mechanism can be used for opening and closing doors and drawers of products such as refrigerators.

The invention discloses a closed penetration-free filament collecting device used for reeling silk. The closed penetration-free filament collecting device comprises a circular filament collecting hole, wherein the filament collecting hole is formed by overlapping two sections of circular arcs; one section of circular arc is positioned on a first ceramic plate; the other section of circular arc is positioned on a second ceramic plate; the first ceramic plate and the second ceramic plate are closed to from the filament collecting hole; an interval is formed between the first ceramic plate and the second ceramic plate; and an axial interval is formed between two sections of circular arcs for forming the filament collecting hole. Du ring the whole process that a silk filament penetrates through the filament collecting hole, the closed penetration-free filament collecting device is adopted, and the axial direction of the filament collecting hole is always in a full circle state so as to completely prevent silk filaments with knobs from penetrating through the filament collecting hole, so that the quality of the silk filaments is improved from the technology level, the process is free from artificial control, and enormous economic benefit is generated.

The invention relates to an oil pump device of a pipe cutter, which comprises a hydraulic top head, a piston, an air vent screw, a top cover, a cylinder body, a compression spring, a barrel body, a seal ring, a base, a pressure plate, a support rod, a pin, a handle, a small piston and a pump body, wherein the cylinder body is installed on the base by threaded connection, the barrel body is sheathed at the outer ring of the cylinder body, the top cover is tightly screwed on the cylinder body by a thread, and simultaneously the barrel is compressed; the piston and the seal ring form a piston rod assembly, the compression spring is sheathed on the piston rod, the hydraulic top head is installed on the piston, the piston rod assembly is installed in the cylinder body, the lateral side of the barrel body on the base is provided a small manual pump comprising the support rod, the pin, the handle, the small piston and the pump body, the support rod is connected with the handle by the pin, the small piston in the pump body is connected with the handle, a pressure-regulating oil way is added on the pump body, and a return pipeline of the pump is provided with a return oil way; and the air vent screw is fixed in an air vent at one side of the top cover, and the pressure plate at the bottom of the piston is fixed on the based by screws. The oil pump device has the advantages of compact structure, stable quality, low failure rate and convenient maintenance and repair.

The invention discloses a double-shaft sun tracking system of a photovoltaic power generation system and a control method thereof. The double-shaft sun tracking system comprises a control unit, a butterfly condenser, a motor unit, a man-machine interaction unit, a sensor measurement unit and a timer. The control unit is connected with the butterfly condenser through the motor unit, the control unit is connected with the man-machine interaction unit and the timer, and the sensor measurement unit comprises an elevation angle position sensor, an azimuth angle position sensor and a photoelectric sensor. The control unit is connected with the butterfly condenser through the elevating angle position sensor and the azimuth angle position sensor, and the control unit is connected with the photoelectric sensor through the photoelectric sensor signal conditioning circuit. The system has the characteristics of convenient man-machine interaction, simple structure, high reliability, small size, low power consumption, low cost, strong anti-interference capability, convenient maintenance and the like.

The invention belongs to the technical field of zinc plating bearing, and specifically discloses a hanger for bent tube zinc plating. The hanger comprises a supporting frame, wherein two layers of supporting rods which are parallel to one another are separately fixed in the supporting frame vertically; upper and lower layers of the supporting rods are mutually staggered in the vertical direction;the supporting rods are axially and sequentially fixed with a plurality of stand columns which are parallel to one another; the axial direction of the stand columns is perpendicular to that of the supporting rods; and the stand columns of the upper layer of the supporting tubes and the stand columns of the lower layer of the supporting tubes are mutually staggered in the vertical direction. The invention aims to provide the hanger for bent tube zinc plating, and the hanger solves the problem that bent tube fixing is unstable.

The invention provides an ultrathin elevator lock capable of automatically resetting. The ultrathin elevator lock capable of automatically resetting comprises a lock core, a lock sleeve, a switch assembly, a circuit board assembly and a shell body, wherein a through hole is vertically formed in the lock sleeve, and the side face of the lock sleeve is provided with a first groove; a lock core positioning hole is formed in the lock core, and the switch assembly is arranged in the first groove and connected with a lock core pin through the lock core positioning hole; the bottom of the lock core is also provided with a first boss and a second boss, a torsion spring is sleeved with the first boss, and a switch torsion piece is sleeved with the second boss; a second groove is formed in the shell body, and the shell body is fixedly connected with the lock sleeve through a bolt. According to the ultrathin elevator lock capable of automatically resetting, the positioning is accurate, the length is decreased and the sensitivity is greatly improved; multiple functions are achieved by the single lock, the production cost is reduced, the design is reasonable, the structure is simple, and the assembly is more convenient.

The invention relates to a mechanical optical shutter device for a laser, and a pulse scanning mechanism of the device comprises a rotating disc fixing support which is provided with an upper rotating disc and a lower rotating disc. The upper and lower rotating discs are respectively provided with a plurality of through holes, and are respectively connected with a transmission shaft of a servo motor through rotating disc central holes. The servo motor is disposed on the rotating disc fixing support. A pulse adjustment mechanism comprises a plurality of reflectors disposed on a side surface of the upper rotating disc, a plurality of reflectors disposed on a side surface of the lower rotating disc, a semiconductor laser, and a rotating disc photoelectric detection apparatus, wherein the semiconductor laser is disposed on a semiconductor laser support. The semiconductor laser support is connected with a supporting seat, and the supporting seat is fixed on a pedestal. The bottom of the rotating disc photoelectric detection apparatus is fixed on the rotating disc fixing support. A light-outgoing mechanism comprises a reflector mechanism and a reflector photoelectric detection apparatus. The device effectively solves a technical problem that a current optical shutter is difficult to achieve the machining of single laser pulse or low pulse, is high in stability, and is quick in response.

The invention discloses an arc extinguishing device of a dual-power switch. Arc extinguishing separator plate structures are respectively and rotatably arranged on a joint path between a moving contact and a second static contact and a joint path between the moving contact and a third static contact. Electric arc and arc discharge caused by the separation of the moving contact and the static contact are cut off; when the moving contact passes through an arc extinguishing sheet assembly, the electric arc is quickly extinguished; therefore, when the moving contact is switched between the secondstatic contact and the third static contact in a rotating manner, a short-circuit accident caused by the fact that an electric arc is connected with the second static contact or the third static contact in a channeling manner is prevented. The technical scheme is adopted, an arc extinguishing separator plate structure is used to block and cut off an electric arc generated when the moving contact is disconnected with the second static contact or the third static contact. Arc channeling and arc discharge phenomena are prevented, the burning damage of the electric arc to moving and static contacts is reduced, the internal temperature rise of the dual-power switch is reduced, the arc extinguishing capability and arc extinguishing efficiency of the arc extinguishing device are greatly improved,the breaking capability of the dual-power switch is improved, and the service life of the dual-power switch is prolonged.

The invention discloses a smart toilet knob for providing operation feedback. The smart toilet knob includes a knob module host and a knob assembly. The knob assembly is mounted on the knob module host to achieve rotation. A main circuit board and a plurality of optical gratings are arranged in the knob module host. A sub-circuit board is arranged in the knob assembly, the main circuit board is connected with the sub-circuit board, a vibration assembly is arranged on the sub-circuit board or the main circuit board, light block information when the knob assembly is operated is sensed by the optical gratings and fed back to the main circuit board, and the main circuit board controls the vibration of the vibration assembly. When the knob is operated, an operation result is obtained through the vibration, or the operation result is obtained through the change of the vibration and sound and the vibration and light. The smart toilet knob is suitable for ordinary users, blind persons, users with visual problems and hearing-impaired users. Users can customize one or more combinations of responses to obtain direct operation feedback. The smart toilet knob is convenient to use.

A mounting structure of a refrigerator door comprises a door housing. Door shaft sleeves are disposed at the upper and lower ends of one side of the door housing respectively. A hinge plate is disposed on a refrigerator body and is provided with a door shaft. The door shaft is nested in door shaft holes of the door shaft sleeves. The outer periphery of the door shaft sleeves are arc surfaces. Centers of the arc surfaces and centers of the door shaft holes are eccentric. The arc surfaces are provided with positioning grooves, and the right shoulder of each positioning groove is lower than the left shoulder. Radius of the arc surface of the right shoulder of each positioning groove is larger than that of the left shoulder of the positioning groove. The mounting structure further comprises a pressure spring. The pressure spring comprises a pressure spring body, a pressure spring arm and a pressure spring head, the pressure spring body is fixedly connected to the hinge plate, the pressure spring body is fixedly connected with one end of the pressure spring arm, the pressure spring head is disposed at the other end of the pressure spring arm, and the pressure spring head fits with the positioning grooves. The mounting structure of the refrigerator door allows for the function that a door is automatically positioned in opening and automatically resets in closing and is simple in structure, convenient to mount and lower in cost.

The invention relates to a foldable tricycle. The foldable tricycle comprises a handlebar (15), a tricycle seat (2), a pedal (5), rear wheels (11), a front tricycle frame (4-1), a rear tricycle frame (4-2) and a steering assembly (16), wherein the steering assembly (16) is connected between the front tricycle frame (4-1) and the rear tricycle frame (4-2) and comprises a rotating shaft (16-9), a bearing seat (16-7), a shaft fixing component (16-10), two deep groove ball bearings, an elastic steel sheet (16-15) and two L-shaped elastic steel sheet fixing components (16-1,16-13); rotating shafts (9) are fixedly connected with the bearing seat (16-7) through a deep groove ball bearings (16-6), a deep groove ball bearing (16-5) is mounted in the bearing seat (16-7), and the shaft fixing component (16-10) is positioned and mounted on the rotating shafts; the elastic steel sheet (16-15) penetrates through the rotating shafts (16-9). The foldable tricycle disclosed by the invention has the advantages that a turning radius is small, the foldable tricycle is not liable to laterally turn, the stability is good, and the foldable tricycle can be folded.

A modular vibration coin sorting device comprises a vibration support and a coin sorting mechanism arranged above the vibration support. When a cam is driven by a motor to move, the coin sorting mechanism vibrates up and down, coins can slide down on a tilted sieve plate and fall into corresponding sieve layers in the process of sliding, and therefore, the function of coin sorting is achieved. The modular vibration coin sorting device is compact in structure design and simple and practical, and can achieve the function of coin sorting.

The invention discloses a rigid-flexible coupled frog-like robot driven by explosion, which belongs to the field of soft jumping robots. The problem of uncontrollable jumping posture, landing direction and unstable landing of the existing soft bouncing robot is solved. The invention utilizes the principle of hydrogen and oxygen detonation and energy release, and combines the combination of soft detonation cavity and rigid piston type constraints to realize the release of energy, and can convert chemical energy into mechanical energy in a short period of time, and can realize relatively large instantaneous At the same time, the expansion direction of the soft explosion chamber can be controlled through rigid piston constraints, so that the jumping direction and attitude of the robot can be controlled. The invention is applicable to the technical field of bionic robots.