45results about How to "Realize two-way rotation" patented technology

The invention particularly discloses a device applied to locking and opening a well lid lock and stably keeping. The device comprises a lock shell, wherein the lock shell is provided with a main shaft and a bidirectional corner electromagnet, wherein the bidirectional corner electromagnet drives an electromagnet shaft in the bidirectional corner electromagnet to rotate; the lower end of the electromagnet shaft is connected with a connection cover; the connection cover is connected with a chuck connection rod; the chuck connection rod is provided with a top block; the lock shell is provided with a positioning pin for positioning a rotary position of the chuck connection rod; the top end of the main shaft is matched with a rotary table and the bottom end of the main shaft is matched with a chuck; a notch is formed in the outer edge of the chuck; the notch is matched with the chuck connection rod; an annular opening is formed in the inner side of the chuck; the annular opening is matched with a limiting pin fixed on the lock shell. The device disclosed by the invention is simple in structure and the aim of unlocking or locking the well lid lock is realized through the corner electromagnet; the two states can be stably kept due to the characteristics of the corner electromagnet.

The invention discloses a spraying arm assembly for a dish washing machine. The spraying arm assembly comprises a spraying arm and a rotating stopping plate, wherein a hollow cavity is formed in the spraying arm; a water feeding hole for feeding water, a first thrust spraying hole for pushing the spraying arm to rotate in the first direction, and a second thrust spraying hole for pushing the spraying arm to rotate in the second direction are formed in the spraying arm, wherein the second direction is opposite to the first direction; the rotating stopping plate is rotatably arranged into the spraying arm and can be switched between the first state and the second state; when the rotating stopping plate is in the first state, the first thrust spraying hole is blocked and the hollow cavity and the second thrust spraying hole can be communicated; when the rotating stopping plate is in the second state, the second thrust spraying hole can be blocked and the hollow cavity and the first thrust spraying hole can be communicated. According to the spraying arm assembly, the rotating stopping plate can be simply rotated to enable the spraying arm to rotate in the first direction or the second direction; the control is convenient; the spraying arm is stable to rotate.

The invention discloses an axial piston variable pump with four oil ports and low-noise parallel distribution structure. The pump comprises a shell, a front cover, a rear cover, a main shaft, a swash plate cradle, a set plate, a cylinder block, a valve plate, pistons, sliding shoes, a bearing, a variable control mechanism, etc. The cylinder block of the pump is provided with ten piston holes divided into two groups, and each group includes five piston holes located on different reference circles respectively; the pistons are fit to the piston holes of the cylinder block; the center of the cylinder block is provided with a spline hole, and the main shaft penetrates through the cylinder block, and is fit to the spline hole; a friction pair is formed by the distribution end surface of the cylinder block and the valve plate, and another friction pair is formed by the sliding shoes of the pistons in the piston holes of the cylinder block and the swash plate cradle; the upper distribution plane of the rear cover is in static connection with the corresponding end surface of the valve plate; the valve plate adopts a window structure of inner and outer ring distribution, and oil absorption and discharge distribution windows are of parallel double-ring structures which are symmetrical by taking the connecting line passing a top dead center and a bottom dead center as an axis; the rear cover is provided with four oil ports which are independent respectively; and the piston pump has different working modes through combining the four oil ports.

The invention provides electronic equipment and a using method. The electronic equipment comprises a back shell, a lens module, a supporting piece, a push block, a lead screw, a driving mechanism, a first transmission assembly, a second transmission assembly used for driving the lens module to rotate, a magnetic piece and an electromagnet. The supporting piece is rotationally connected with the lens module; the push block is sleeved on the lead screw and can move along the axial direction of the lead screw; the push block is in threaded fit with the lead screw; the driving mechanism is mountedon the back shell, and is connected with the lead screw, the first transmission assembly comprises a first guide rod, a first elastic piece, a second elastic piece and a shaft sleeve assembly. The shaft sleeve assembly comprises a shaft sleeve body, a shaft sleeve seat and a shaft sleeve cover; one end of the first guide rod is connected with the supporting piece; the first guide rod is in sliding connection with the push block through the shaft sleeve assembly, the first elastic piece is compressed between the supporting piece and the shaft sleeve base, the second elastic piece is compressedbetween the push block and the shaft sleeve cover, the magnetic piece and the electromagnet are opposite, one of the magnetic piece and the electromagnet is arranged on a surrounding wall, the otheris arranged on a stopping part, and the lens module can stretch out, draw back and rotate in two directions.

The invention discloses a cosine curve mechanical seal end surface structure. The structure comprises a movable ring and a static ring of a mechanical seal; the outer ends of the sealing end surfaces of the movable ring and the static ring serve as high-pressure sides, namely upstream, and the inner ends of the sealing end surfaces serve as low-pressure sides, namely downstream; smooth and continuous annular sealing dams are arranged on the low-pressure sides of the sealing end surfaces; multiple periodically distributed curve grooves are formed in the high-pressure sides of the sealing end surfaces; openings at one ends of the curve grooves extend to the upstream of the sealing end surfaces, and the other ends of the curve grooves are positioned at the upstream of the annular dams; micro grooves are symmetrically formed in two sides of each curve groove; and the sealing end surfaces are provided with sealing weirs in non-grooving areas between the curve grooves at the upstream of the annular dams. The cosine curve mechanical seal end surface structure has the following beneficial effects: the structure is obvious in reflux effect, low in leakage rate, capable of being applied to various mediums, high in solid particle preventing capacity, excellent in static / dynamic pressure effect and capable of frequently starting and rotating in two directions.

The invention relates to a fan system, an air conditioner outdoor unit and a heat exchange method of the air conditioner outdoor unit, and belongs to the technical field of air conditioners. According to the mainly adopted technical scheme, the fan system comprises at least two fan blades and a motor, wherein each fan blade comprises a plurality of blade bodies. The motor is connected with the fan blades and used for driving the fan blades to rotate. The fan system is applied to the air conditioner outdoor unit and used for carrying out acting on airflow at least two times, so that heat exchange between external airflow and a heat exchanger in the air conditioner outdoor unit is carried out. The air conditioner outdoor unit comprises the fan system. According to the heat exchange method of the air conditioner outdoor unit, the fan system is adopted, so that heat exchange between the external airflow and the heat exchanger in the air conditioner outdoor unit is carried out. The fan system, the air conditioner outdoor unit and the heat exchange method of the air conditioner outdoor unit are mainly used for improving the acting ability and efficiency of the fan system on the airflow and ensuring the recirculation air volume generated by the fan system, so that the heat exchange effect of the heat exchanger of the air conditioner outdoor unit is improved.

The invention discloses a drum-type friction screw press, which belongs to a forge press machine. The drum-type friction screw press comprises a machine base and a horizontally rotating flywheel, wherein the flywheel is connected with a screw; the screw drives a sliding block to move up and down; the inside of the flywheel is provided with an accommodating cavity comprising the outer wheel rim and the inner wheel rim of the flywheel; friction wheels are radially and symmetrically arranged in the accommodating cavity; the friction wheels are driven by a motor through a belt to automatically rotate in the same direction; and the frication wheels are connected with a piston rod of an oil hydraulic cylinder and press the outer wheel rim and the inner wheel rim of the flywheel under the push of the piston rod respectively. For both the pressing and lifting of the sliding block, the friction wheels on the two sides oppositely press the flywheel with equal forces to rotate the flywheel. Thus, the drum-type friction screw press can eliminate the lateral force applied on the screw and prolong the service life of equipment.

The invention relates to a cleaning machine. The cleaning machine comprises a water tank body, a spraying arm, a motor, a motor shaft, a centrifugal impeller, a water supply mechanism and a diversionpart; the centrifugal impeller is arranged in the spraying arm, and connected with the upper end of the motor shaft; the motor shaft is through vertically; furthermore, the lower end is connected withthe water supply mechanism; the diversion part is arranged below the spraying arm, and connected with a water inlet; multiple diversion holes are arranged on the outer circumferential wall of the lower part of the diversion part at intervals; and the upper part of the diversion part is provided with a valve assembly, which can close the lower end of the water inlet when the motor shaft inputs water into the spraying arm and open the lower end of the water inlet when the centrifugal impeller is started. When in use, the water inlet is closed through the valve assembly at first; the motor shaftinputs a little water into the spraying arm, so that the centrifugal impeller is immersed; after the centrifugal impeller is started, water supply of the motor shaft is stopped; under the action of negative pressure, a water flow continuously enters the diversion part, and drives the valve assembly to open the water inlet; therefore, continuous supply of the water flow is realized; due to positive and negative rotation of the motor, bidirectional rotation of the spraying arm can be realized; and thus, the cleaning effect is increased.

The invention relates to a dynamic balance measuring machine, which comprises a stand. A gear box is arranged at the stand, an input shaft and an output shaft are arranged in the gear box, the output shaft is connected with a main shaft of an electric jigger through a clutch, and a main shaft of the electric jigger is driven by an electric motor to rotate forwards and reversely; and a speed change mechanism is arranged between the input shaft and the output shaft in the gear box, and the speed change mechanism comprises a speed change gear and a gear selecting device which are engaged with each other. The invention mainly provides the dynamic balance measuring machine in which the gear box has wide working range and comparatively high raising speed, can bear positive and negative torque, carries out bidirectional measurement and control, and is applied to large-vibration environment; and the dynamic balance measuring machine solves the technical problems that the dynamic balance measuring machine has limited application range, can only bear unidirectional torque and carries out unidirectional measurement and control in the prior art.

The invention provides a parallel bearingless double-rotation type standing wave type linear ultrasonic motor. The motor comprises a stator and a rotor; the rotor comprises an inner rotor and an outerrotor; the stator is arranged between the inner rotor and the outer rotor; the stator comprises a plurality of stator units and a squirrel cage type fixing structure; the stator unit comprises an elastic body, a left end piezoelectric ceramic and a right end piezoelectric ceramic; the elastic body is of an arc-shaped structure; the elastic bodies are positioned through the squirrel cage type fixing structure; the elastic bodies are arranged together to form a ring-shaped structure; the inner surface of the elastic body is provided with two inner driving feet; the inner driving feet contact with the inner rotor; the outer surface of the elastic body is provided with two outer driving feet; the outer driving feet contact with the outer rotor; and the inner driving feet and the outer drivingfeet reversely deviate from the standing wave node positions of the stator unit by the same radian. Compared with a currently popular linear ultrasonic motor, the motor of the invention has the advantages of compact structure, bearingless property, and bidirectional rotation of the inner rotor and the outer rotor.

The invention provides an anilox roller transmission mechanism of a printing machine. A transmission shaft of the anilox roller transmission mechanism rotates in two ways and is connected with a first gear assembly and a second gear assembly. The axial positions of the transmission shaft and the first gear assembly are kept unchanged. First tooth parts of the first gear assembly are in transmission fit with a first input gear. A first transmission device is in transmission with the first input gear. The second gear assembly comprises third tooth parts and fourth tooth parts. The second gear assembly moves in the axial direction relative to the transmission shaft. The second gear assembly and the transmission shaft synchronously rotate. A second transmission device is in transmission connection with a second input gear. The second gear assembly moves in the axial direction. Three-station switching is achieved when the fourth tooth parts are engaged with the second input gear, when the third tooth parts are engaged with the second tooth parts and when the fourth tooth parts are not engaged with the second input gear and the third tooth parts are not engaged with the second tooth parts. During printing, an anilox roller rotates forwards or backwards through transmission of the first transmission device, two-way rotation is achieved, and printing of the front face or the back face of a printed material is satisfied through printing ink transfer. When printing is not conducted, the anilox roller rotates through transmission of the second transmission device so as to conduct ink distribution. Printing ink transfer and ink distribution do not influence each other.

The invention provides a double direction constant flow gear pump, which relates to the technical field of double direction rotation of hydraulic pump. The gear pump mainly comprises a double direction constant flow control device, a general oil pump inlet (I), a general oil pump outlet (P), an oil pump inlet (I'), an oil pump outlet (P'), a normative hydraulic pump oil port (A) and a normative hydraulic pump oil port (B). The double direction constant flow control device comprises a one-way valve (1), a one-way valve (2), a hydraulic control one-way valve (3), a hydraulic control one-way valve (4), a slide valve (5), a flow control orifice (6), a pressure control orifice (7), a cone valve (8), a hydraulic control piston (9) and a hydraulic control piston (10). The invention has the advantages that: when the gear pump rotates in two direction, the constant flow gear pump can keep the position of the oil inlet and oil outlet unchanged, at the same time, maintain constant output flow and realize safe restriction for the output pressure.

A bidirectional spiral drill bit disclosed by the invention comprises a top cover, an outer barrel-shaped drill bit body and an inner barrel-shaped drill bit body; the inner barrel-shaped drill bit body is arranged in the outer barrel-shaped drill bit body, a side scraper is arranged on the side wall of an inner drill bit pipe body, and the bottom of a rotating shaft connecting block is fixedly connected with the top of the inner drill bit pipe body through a second fixing screw. According to the bidirectional spiral drill bit, a side scraper is arranged on the outer wall of the inner barrel-shaped drill bit body; the side scraper is in contact with the inner wall of the outer drill bit pipe body; during rotation, the side scraper effectively scrapes off soil on the inner wall of the outerbarrel-shaped drill bit body; the problem that rotation is affected due to too much soil between the outer barrel-shaped drill bit body and the inner barrel-shaped drill bit body, and the abrasion problem are solved; the service life of the outer barrel-shaped drill bit body and the inner barrel-shaped drill bit body is greatly prolonged, the outer barrel-shaped drill bit body and the inner barrel-shaped drill bit body are opposite in rotation direction, bidirectional rotation is achieved, the excavation effect is better, the soil smashing effect is better, the bidirectional spiral drill bitis not prone to being adhered to soil, and therefore cleanliness of the bidirectional spiral drill bit is kept.

The invention discloses a load system of a hydrostatic transmission device detecting platform. The load system is structurally characterized in that a circuit A and a circuit B are connected in parallel to form a loading pump feed circuit, each of the circuit A and the circuit B is formed by series connection of two one-way valves, an oil tank, a one-way hydraulic pump and the loading pump feed circuit are serially connected to form a closed circuit, and two ends of a loading pump are communicated with middle positions of the circuit A and the circuit B respectively. In order to protect the whole circuit, a pilot-operated relief valve is connected in parallel in front of the loading pump feed circuit; in order to regulate oil pressure of the whole circuit and working pressure of the loading pump, an electro-hydraulic pilot-operated proportional relief valve is serially connected behind the loading pump feed circuit. The load system has the advantages that the loading pump can rotate forwards and backwards directly without stopping the one-way hydraulic pump, and a solenoid valve is sensitive in response and less in consumption.

The invention discloses a bidirectional rotating type water turbine for a cooling tower. The bidirectional rotating type water turbine comprises a volute, a water wheel arranged in the volute and a speed reducer connected to the water wheel. The speed reducer comprises an input shaft and an output shaft, wherein the input shaft is connected with the water wheel and provided with an input gear, and the output shaft is connected with the input shaft through a gear and provided with an output gear. A gear carrier is arranged between the input shaft and the output shaft and provided with two sets of parallel transmission gear sets. A gear carrier lifting device is arranged at the top end of the gear carrier. One transmission gear set comprises a first transmission gear, and the other transmission gear set comprises a second transmission gear and a third transmission gear meshed with the second transmission gear. The bidirectional rotating type water turbine is simple in structure, the change of the rotating direction of the output shaft of the water turbine is achieved through changes of an odd number of transmission gears or an even number of gears, and thus the purpose of reverse blowing ice melting of the water energy recycling cooling tower is achieved.

The invention discloses a water turbine for a bidirectional rotating type cooling tower. The water turbine comprises a turbine shell, a water wheel and a speed reducer, wherein the water wheel is arranged in the turbine shell, the speed reducer is connected to the water wheel and comprises an input shaft and an output shaft, the input shaft is provided with an input gear and is connected with the water wheel, and the output shaft is provided with an output gear and is connected with the input gear of the input shaft; a gear frame is arranged between the input shaft and the output shaft, two parallel transmission gear sets are arranged on the gear frame, and a gear set lifting device is arranged at the top end of the gear frame; and one transmission gear set comprises a first transmission gear, and the other transmission gear set comprises a second transmission gear and a third transmission gear which are mutually meshed. The water turbine is simple in structure, and by virtue of change of odd and even numbers of the transmission gears, the steering change of the output shaft of the water turbine is changed, so that the purpose of deicing through backflushing of a water-power recycling cooling tower is achieved.

The invention provides a weighting type industrial equipment moving level adjusting universal wheel. The wheel is compose of universal wheel body, bottom plate, wheel frame, ball, roller, screw and adjusting mechanism. The upper part of the universal wheel body is provided with a bottom plate; A wheel frame is arranged below the bottom plate; A ball is arranged between the bottom plate and the wheel frame; The wheel frame is provided with a roller, and the roller and the wheel frame are connected with each other through bolts; The lower part of the wheel frame is provided with supporting feet;The upper part of the supporting foot is provided with a lead screw, and the lead screw and the supporting foot are connected in a fixed manner; The screw is provided with an adjusting mechanism; Byimproving the universal wheel, the invention has the advantages of reasonable structure design, convenient transportation, accurate adjustment of the level of the equipment after fixing, more convenient, simple operation, energy saving and high efficiency, thereby effectively solving the problems and shortcomings proposed in the background technology of the invention.

The invention belongs to the technical fields of environmental-protection and energy-saving mechanical devices, and especially relates to a high-efficiency and energy-saving mixing device. The high-efficiency and energy-saving mixing device comprises a stirring tank, a supporting rack, a motor storage box, sound insulating sponge, a motor pedestal, a switch, a motor, an emergency stop button, a sealing bearing, a motor shaft, a sun gear, a planetary gear, a tooth profile, stirring vanes, spoilers, a sealing cover and a sealing ring, the motor storage box is arranged at the bottom of the device, the motor is arranged in the motor storage box, the motor is fixed on the motor pedestal, and the switch and the emergency stop button are arranged at the right side of the motor storage box in parallel. The device has the advantages of reasonable structure, high pertinence, realization of bidirectional rotation of the stirring vanes and the spoilers under the driving of the same motor by using the gears transmission, increase of the stirring efficiency, saving of resources, wide application prospect, and suitableness for promotion and application.

The invention provides electronic equipment and a use method. The electronic equipment has telescopic and bidirectional rotation functions. The electronic equipment comprises a back shell, a lens module, a supporting piece, a push block, a lead screw, a driving mechanism, a first transmission assembly, a second transmission assembly and a limiting mechanism. The supporting piece is rotationally connected with the lens module; a supporting part extends from one side, far away from the lens module, of the supporting piece; the push block can move along the axial direction of the lead screw and is in threaded fit with the lead screw; the driving mechanism is arranged on the back shell and is connected with one end of the lead screw; the first transmission assembly comprises a first elastic piece and a second elastic piece; the first elastic piece is compressed between the supporting piece and the push block; the second elastic piece is compressed between the push block and the supportingpart; the second transmission assembly is used for driving the lens module to rotate forwards or reversely; the limiting mechanism comprises a magnetic piece, an electromagnet and a buckling piece; the buckling piece is provided with a limiting part matching the supporting piece in a buckling mode; one of the magnetic piece and the electromagnet is arranged on the buckling piece, and the other oneis arranged on the back shell or a stopping part.

The invention discloses a bidirectional rotating type water turbine for a cooling tower. The bidirectional rotating type water turbine comprises a volute, a water wheel arranged in the volute and a speed reducer connected to the water wheel. The speed reducer comprises an input shaft and an output shaft, wherein the input shaft is connected with the water wheel and provided with an input gear, and the output shaft is connected with the gear of the input shaft and provided with an output gear. A gear frame is arranged between the input shaft and the output shaft and is provided with two sets of parallel transmission gear sets. A gear frame lifting device is arranged at the top end of the gear frame, one transmission gear set comprises a first transmission gear, and the other transmission gear set comprises a second transmission gear and a third transmission gear which are engaged. The bidirectional rotating type water turbine for the cooling tower is simple in structure, changes of the rotating direction of the output shaft of the water turbine are achieved through odd-number changes and even-number changes of the transmission gears, and therefore the purposes of water energy recycling and back flushing deicing of the cooling tower are achieved.

The invention relates to a bidirectionally rotary lipstick box. Two extension ends arranged oppositely are arranged in the periphery of the lower end of a lipstick box support; a rack is arranged on the inner side of each extension end; a sleeve component comprises a sleeve that is a round tube with an aslant cut upper end; a rotation shaft passing through the center of the sleeve and of which twoends are arranged on the side wall of the sleeve is arranged at the lower part of the sleeve; a fan-shaped gear matched with the racks is fixedly connected with the middle part of the rotation shaft;a small bevel gear is fixedly connected to one end of the rotation shaft in the sleeve; and a rotary pedestal component comprises a pedestal that is designed to be hollow, a cylindrical bump is arranged at the bottom of the pedestal, and a big bevel gear is fixedly connected to the upper end of the cylindrical bump. Via continuous rotation of the pedestal in any direction, the lipstick box provided by the invention can be repeatedly moved up and down, so that the reliability of the lipstick box is improved, and the service life of the lipstick box is prolonged; and by rotating the pedestal for a relatively small angle, a lifting process of the lipstick box can be achieved, and the lipstick box is high in efficiency and more convenient to operate.

The invention provides a bilateral rotation door and window with an embedded invisible hinge and aims to solve the technical problems in the conventional doors and windows that the door and window hinges are completely exposed so that the overall appearance of doors and windows is affected, and the conventional doors and windows are only opened along one direction, particularly, the glass windows of high-rise buildings occupy space when opened inwards and bring great risk and inconvenience to cleaning work when opened outwards; the conventional door and window sealants are only applied to doors and windows which are only opened along one direction, and the sealing effect is not ideal; and the locks of doors and windows are required to be additionally designed. The door and window body is formed by movably connecting rotary embedded invisible hinges and a mounting body; the two adjacent end surfaces of a fixing beam and a moving beam of the hinges, the free end of the door and window body which is integrated with the moving beam, and the corresponding frames of the mounting body are provided with corresponding concentric arc surfaces, and the double-arc sealants are used for sealing each two arc surfaces; and an embedded locking-type arc sealing is applied to the frames of the door and window body and the corresponding frames of the mounting body, which arranged on both sides of the hinges. The hinge has a reasonable structure and is convenient to install; by using the hinges, not only the overall appearance of doors and windows is kept and the doors and windows are opened along one direction or two directions, but also the bearing capacity is high, so that the hinge is applied to various doors and windows.

The invention particularly discloses a device applied to locking and opening a well lid lock and stably keeping. The device comprises a lock shell, wherein the lock shell is provided with a main shaft and a bidirectional corner electromagnet, wherein the bidirectional corner electromagnet drives an electromagnet shaft in the bidirectional corner electromagnet to rotate; the lower end of the electromagnet shaft is connected with a connection cover; the connection cover is connected with a chuck connection rod; the chuck connection rod is provided with a top block; the lock shell is provided with a positioning pin for positioning a rotary position of the chuck connection rod; the top end of the main shaft is matched with a rotary table and the bottom end of the main shaft is matched with a chuck; a notch is formed in the outer edge of the chuck; the notch is matched with the chuck connection rod; an annular opening is formed in the inner side of the chuck; the annular opening is matched with a limiting pin fixed on the lock shell. The device disclosed by the invention is simple in structure and the aim of unlocking or locking the well lid lock is realized through the corner electromagnet; the two states can be stably kept due to the characteristics of the corner electromagnet.

The invention provides an electronic device and a method for using it. The electronic device has the functions of retractable and bidirectional rotation, and includes a back shell, a lens module, a support member, a push block, a screw rod, a driving mechanism, a first transmission assembly, a second transmission assembly Components and limit mechanism, the support piece is connected with the lens module in rotation, the side of the support piece away from the lens module extends with a support portion, the push block can move along the axial direction of the screw rod, and is threadedly matched with the screw rod, and the driving mechanism Located on the back shell and connected to one end of the screw rod, the first transmission assembly includes a first elastic member and a second elastic member, the first elastic member is compressed between the support member and the push block, and the second elastic member is compressed on the push block Between the supporting part and the supporting part, the second transmission assembly is used to drive the lens module to rotate forward or reversely. The limit mechanism includes a magnetic part, an electromagnet and a buckle. One of the magnetic parts and the electromagnet is arranged on the buckle part, and the other is arranged on the back shell or the stop part.

The invention discloses a swing type bidirectional positioning clutch which comprises a box body and a reduction gear component which is assembled on the box body, wherein a section of arc chute is arranged on the box body; a rocker panel is rotationally arranged at the inner side of the box body; a clutch gear component is arranged on one side face of the rocker panel; a clamping pin is arranged on the other side face of the rocker panel; a rocking bar is rotationally arranged at the outer side of the box body; a bidirectional limiting cam plate is fixedly connected to the rocking bar, wherein the two ends of the rocking bar are provided with clamping grooves; one end of a first positioning pin is fixed on the bidirectional limiting cam plate; the other end of the first positioning pin is clamped in the chute; a positioning spring is arranged between the first positioning pin and a second positioning pin; a reset part is arranged between the rocker panel and the box body; and the clamping pin penetrates through the chute and is pressed against a cam surface of the bidirectional limiting cam plate. The bidirectional positioning clutch has the advantages of simple structure, small size, convenient assembly, flexible operation and low production cost.

The invention discloses a spray arm assembly for a dishwasher, comprising: a spray arm, a hollow cavity is defined in the spray arm, and a water inlet hole for water inlet is provided on the spray arm, and the spray arm is used to push the spray arm along the The first thrust nozzle hole rotating in the first direction and the second thrust nozzle hole used to push the spray arm to rotate in the second direction, the second direction is the opposite direction of the first direction; the rotating blocking plate is rotatably arranged In the spray arm and switch between the first state and the second state, when the rotating block is in the first state, the first thrust nozzle is blocked and the hollow inner cavity and the second thrust nozzle are connected, and the rotating block is in the first state In the second state, the second thrust nozzle hole is blocked and the hollow inner chamber and the first thrust nozzle hole are connected. According to the spray arm assembly for the dishwasher in the embodiment of the present invention, the spray arm can be rotated in the first direction or the second direction only by turning the rotating blocking plate, which is convenient to control and the spray arm rotates stably.

The invention discloses an adjustable and detachable high-speed ship stern wave surge device, wherein the fixed slideway is hingedly connected with the ship hull through a hinge shaft at the bottom end, and the upper end of the fixed slideway is connected with an electric motor through a connecting rod so as to realize the rotation around the shaft; The two sides of the fixed sliding way are provided with sliding grooves, and the moving sliding board is integrally embedded in the fixed sliding way, so that the linear movement of the moving sliding board in the sliding way can be realized; A support frame of that wave surge plate is directly welded on both side of the moving slide plate, the first wave surge plate is welded between the support frames of the wave surge plate, grooves are arranged on both sides of the end of the first wave surge plate, the second wave surge plate is integrally embedded in the grooves, and the motor rotates to drive the linear motion of the wave surge plate to realize the change of the length; The invention can improve the resistance performance and the stability of the ship when sailing; The invention has novel structure design, and can realize the change of the length, height and angle of the surge plate. The invention not only realizes the function of the conventional surge device, but also can optimize the drag reduction surge performance by adjusting the parameters of the surge plate such as the length, the height and the angle of the surge plate.