172results about How to "Guaranteed to close" patented technology

The invention discloses a vehicle window control system which comprises an additional switch positioned on the handle of the vehicle door, a vehicle door lock switch, a vehicle door switch and a vehicle window control module applied to control the lifting of the vehicle window. The additional switch, the vehicle door lock switch and the vehicle door switch are all connected with the vehicle window control module, and the vehicle door lock switch, when being opened, sends the control signals of lowering the window to the vehicle window control module; the additional switch, when being opened, sends control signals of lowering the window to the vehicle window control module; the vehicle door switch, when being opened, sends control signals of lowering the window to the vehicle window control module, and when being closed, sends control signals of raising the window to the vehicle window control module. The system is applicable to vehicles with flameless windows, can ensure normal opening and closing of the vehicle door and prolong the service life of sealing strips at the top and glasses for vehicle windows.

The invention relates to a method for controlling a fuel injection system (10) of an internal combustion engine, the fuel injection system (10) comprising a high-pressure pump (16) associated with a quantity controlling valve (15) having a solenoid valve (22) electromagnetically actuatable by a coil (21) for supplying fuel, the quantity control valve (15) controlling the quantity of fuel supplied by the high-pressure pump (16) and the coil (21) of the solenoid valve (22) having a first current value applied thereto, in order to close the same for supplying fuel to the high-pressure pump (16), the first current value being reduced to a second current value when the solenoid valve is closing (22), such that the radiation of audible sound arising from the closing of the solenoid valve (22) is at least partially reduced.

The invention provides a novel air distribution system with variable lift, which is applied to the field of the internal-combustion engine of the motor vehicle. The novel air distribution system with variable lift comprises a hydraulic tappet (1), an air valve (2) and a rocking arm (3), and further comprises a transmission gear (7), an adjusting rod (9) and a stepping motor (10), wherein, a cam shaft (6) is arranged between the rocking arm (3) and the adjusting rod (9), the cam of the cam shaft is in contact with the adjusting rod (9), the adjusting rod (9) is connected with the transmission gear (7), and the transmission gear (7) is meshed with the stepping motor (10). By adopting the technical scheme, the invention has the advantages that the purpose that the air valve is changed along with the demands of the operating conditions is achieved, and the performance of the engine is optimized to the utmost extent; the structure is simple and compact, and the design is reasonable; and the modification of the engine applying the mechanism is small. Furthermore, the invention is suitable for upgrading for the production products.

The invention discloses a selective laser melting single-knife two-way powder laying device. A scraping knife holder body is of a hollow structure with an upper opening and a lower opening. A powder feeding unit and a scraping knife mounting frame are both located in an inner cavity of the scraping knife holder body. The powder feeding unit comprises a powder feeding plate which can move relative to the scraping knife holder body in the powder laying direction. A powder storage tank is formed among the powder feeding plate, the scraping knife holder body and the scraping knife mounting frame. A powder falling channel is formed between the scraping knife holder body and the scraping knife mounting frame. The powder laying device moves towards one side to the space between the powder feeding unit and the whole scraping knife holder body, relative displacement occurs, the powder storage tank is opened, and powder falls to one side of a scraping knife along the powder falling channel; the whole scraping knife holder body moves reversely, and the powder storage tank is closed; and finally the whole scraping knife holder body and the powder feeding unit both move to the other side, and then powder laying is started. The invention further discloses SLM equipment comprising the powder laying device. The selective laser melting single-knife two-way powder laying device achieves the functions of two-way powder laying and automatic powder falling through one scraping knife, cost is reduced, and no powder pollution is ensured.

The invention discloses a micropump, which comprises an actuating device, a space variable cavity, and an input channel and an output channel which are connected with the space variable cavity respectively, wherein a valve diaphragm which responds to the action of the actuating device is arranged in the input channel and / or the output channel. The micropump provided by the invention is used for realizing the reliable control of an input one-way valve and an output one-way valve; and the valve diaphragm can exert prestress to ensure that the input one-way valve and the output one-way valve are opened and closed effectively under the condition that the contact surface between the input channel and the output channel and the valve diaphragm has low manufacturing accuracy.

The invention relates to a method for preventing an automotive power sunroof from being clamped. The existing method has the disadvantages of low precision, difficult installation, high cost and short service life. The method comprises: firstly, initializing a controller and a drive system of the power sunroof to obtain a travel N and an average output force F0 of a motor; secondly, performing operation according to the button input of the user or an instruction of an LIN bus; if the instruction is 'open', allowing the motor to start to rotate positively; and if the instruction is 'close', allowing the motor to start to rotate reversely. In the process of 'closing', if the sunroof is not closed completely, an instant output force Fn of the motor is calculated; if Fn is more than or equal to F0, the variation of an output force delta F is calculated; and if delta F is more than or equal to an anti-clamping threshold value H, the motor is started to rotate reversely. The anti-clamping threshold value of the method is adjustable and flexible; the sunroofs is positioned accurately according to position signals so as to open or close the sunroof completely; and the method has high precision and rapid speed for preventing the automotive power sunroof from being clamped.

The invention discloses a downhole hydraulic pressure valve control system, which is arranged on the opening and closing location of large-caliber pipeline valve inside the coal mines; wherein, the hydraulic system comprises a hydraulic station (3), an oil outlet pipeline (6), an oil inlet pipeline (7), a manual stop valve (9), a solenoid directional control valve (2) and a hydraulic control valve (1); the solenoid directional control valve (2) is connected with the hydraulic control valve (1) which is arranged on the controlled process pipe through pipeline; the solenoid directional control valve (2) is connected with the valve control PLC (4); the valve control PLC (4) is connected with the switch control cabinet (10) and connected with the water pump (5) through the switch control cabinet (10); the water pump (5) is connected with the controlled process pipe. The downhole hydraulic pressure valve control system has the advantages of being suitable for a plurality of pipeline valves with caliber larger than DN50, realizing the remote control under the prescribed procedure by controlled valve according to control technological requirements, and realizing the remote opening and closing under the condition that the valve is submerged in the water.

The invention relates to electronic weighing devices, in particular to a fast loading device for program control measuring. The fast loading device for program control measuring comprises a storage hopper, a hopper scale, a discharge hopper bearing frame and a control system, wherein the bearing frame is used for bearing the storage hopper and the hopper scale. The control system comprises a feeding gate, a discharge gate, a hydraulic control system, an input / output control cabinet, a weighing display controller and a long-range control computer, the feeding gate and the discharge gate are driven by hydraulic pressure, the input / output control cabinet which is mounted on the storage hopper supplies power to a weighing sensor on the bottom of the hopper scale, the state output signals of the feeding gate and the discharge gate and the output signals of the weighing sensor are transmitted into the weighing display controller through the input / output control cabinet, and the long-range control computer is connected with the weighing display controller and the input / output control cabinet through communication interfaces. The fast loading device for program control measuring is accurate in measurement, reliable in working, convenient to operate and stable in performance, and the degree of automation in fixedly quantified loading is improved notably.

The invention relates to a medical instrument, and especially relates to a multifunctional full-automatic cell and solution treating instrument. The instrument comprises an ultrafilter, a liquid storage container, a peristaltic pump, an electromagnetic valve mixer and a temperature controller, wherein special components in a cell suspension or solution are displaced by a method of instillation combined with ultrafiltration and dialysis, or the cell suspension or solution is diluted and concentrated to desired final volume through accurate control. The multifunctional full-automatic cell and solution treating instrument effectively overcomes the shortages of the existing related treatment methods in the aspects of causing damage of cells, possibly causing cell pollution, taking long time, and low efficiency and the like; and the multifunctional full-automatic cell and solution treating instrument is capable of adding or removing a low-temperature protector quickly and steadily without pollution, and also capable of controlling the volumes and the temperatures of the cell suspension and the solution quite accurately and reducing various cell damages possibly caused in the treatment process. The multifunctional full-automatic cell and solution treating instrument has the advantages of small volume, simple structure, little time consumed and high controllability, and is convenient to operate.

The invention discloses an anti-strong interference switch control signal generating circuit of a system power supply, which comprises a switch signal self-locking module, a switch signal isolation module, an opening and closing state switching module and a soft-off interface module, wherein the switch signal isolation module, the opening and closing state switching module and the soft-off interface module are respectively connected with the switch signal self-locking module. The circuit can stably output the switch state of the power supply in an environment with strong interference, ensure the normal power supply and the normal closing of the system power supply and be applied in the harsh environment. In addition, the power supply switch control signal generating circuit is mainly constituted by an integrated circuit of a resistor-capacitor device and a hex inverter, and the cost is very low.

The invention discloses a plant pot assisting in growth. The plant pot includes a base, a rotary disc is arranged in the base, a water tank is arranged on the rotary disc, the water tank and the rotary disc rotate synchronously, the water tank is provided with a concave-shaped placement area, a flowerpot is arranged in the concave-shaped placement area, a support frame is arranged above the flowerpot, the support frame is arranged on a support column, the support column is arranged on the water tank, the support frame is provided with a plant growth light and a plurality of first spraying nozzles, the water tank is provided with a plurality of second spraying nozzles, the first spraying nozzles and the second spraying nozzles are all connected with a water supply pump, and the water supply pump sprays liquid which is in the water tank to plants in the flowerpot through the first spraying nozzles and the second spraying nozzles. The plant pot can assist the plants in growth, and the difficulty of artificial maintenance is reduced.

The invention discloses a lower flap gate provided with an automatic sewage disposal device, which comprises a gate plate, wherein the bottom of the gate plate is connected with a gate bottom sill arranged in a riverway through a supporting hinged shaft; a connection lifting lug arranged at the upper part of an upstream face of the gate plate is connected with an expansion rod of a hydraulic hoist placed at the top of a gate pier; the bottom of the upstream face of the gate plate is connected with a sewage disposal plate through a movable hinged shaft; the sewage disposal plate extends to the upper surface of the gate bottom sill; and the width of the sewage disposal plate is matched with the width of a gate hole of the riverway. The sewage disposal plate is formed by combining a plurality of parallel steel plates; and the front end parts of the steel plates are provided with oblique plane cutting edge structures. The lower flap gate has the advantages that the lower flap gate is simple in structure and ingenious in conception; a dead angle at an intersection (namely the gate bottom sill) between a downstream bottom face of the riverway and the gate plate is blocked off by utilizing the sewage disposal plate connected with the bottom of the upstream face of the gate plate in a hinged manner, so that the problem of silting of sediment at the bottom of the gate is solved thoroughly; complete gate closure and in-place water shutoff are ensured; and water leakage of the gate does not appear.

An overdrive motor valve with automatic meshing and de-meshing functions comprises a motor and a motor valve body; a projecting shaft of the motor is equipped with a driving gear, the motor valve body is internally equipped with a decelerating mechanism and an overdrive clutch mechanism, the rotation of the motor is transmitted to a rack-shaped valve rod to realize the opening operation of the valve, the decelerating mechanism is a four grade speed varying mechanism, and the transmission manner is: driving gear->driving a first grade duplicate gear->a second duplicate gear->a third duplicate gear->a fourth duplicate gear->a gear and an overdrive ratchet gear, a plane cam and an intermediate gear to rotate, when the intermediate gear rotates to mesh with the duplicate gears, the intermediate gear drives the duplicate gears to rotate to ensure the rack-shaped valve rod to carry out displacement to integrate with a valve core which is internally sheathed with a tower-shaped spring and a rubber sealing jacket, the head of the valve core is embedded into valve petals and the closing operation of the valve can be realized by the elasticity of the tower-shaped spring. The invention can ensure the reliability and service life of the motor valve in use.

The invention discloses a gas drive combined valve suitable for middle-high pressure difference sealing detection, and belongs to the field of valves. The gas drive combined valve comprises a valve seat, a valve body, a valve element, a valve deck, a specially-made plug and the like. The valve body is provided with a control gas path and connected with the valve seat through screws. The valve seat is provided with three side wall gas paths and three bottom gas paths. The valve element is arranged in the valve body and makes the combined valve normally closed under the effect of spring force. Gas is charged into the control gas path to eject the valve element open, so that the valve element is separated from the valve seat. Gas is charged into the valve body through a gas inlet path of the valve seat and then enters the other two gas outlet paths of the valve seat. The combined valve is simple and ingenious in structure; traditional linear contact sealing is changed into surface contact sealing, so that the effect is better; besides, the combined valve is low in cost, convenient to maintain, long in service life, wide in detection pressure range and suitable for various high-precision gas tightness detection instruments and devices.

The invention discloses an open and close door of an electric oven. The open and close door features good heat insulation effect and low temperature on the cold surface, and is convenient and safe for opening. The open and close door comprises a first clamping piece (1), a second clamping piece (2), a handle (3), door panels (4) and a rotating shaft (5); wherein, the first clamping piece (1) and the second clamping piece (2) are respectively and fixedly connected with two opposite sides of the door panels (4), the first clamping piece (1) is rotatablely connected with an oven body (100) of the electric oven by the rotating shaft (5), both the first clamping piece (1) and the second clamping piece (2) are sectional materials with the same shape of cross section, the first clamping piece (1) is provided with an axle hole (10) and at least two first clamping parts (11, 12, 13), the second clamping piece (2) is provided with at least two second clamping parts (21, 22, 23), the axle hole (10) is matched with the rotating shaft (5), the first clamping parts (11, 12, 13) and the second clamping parts (21, 22, 23) are correspondingly arranged and clamped and fixed with the door panels (4) with the number being equal to the number of the clamping parts, and gasps are arranged between the adjacent door panels (4).

The invention discloses a municipal road garbage recycling device which structurally comprises a recycling machine body, a recycling protection cover, a first cover opening handle, a cleaning protection cover and a second cover opening handle. The recycling protection cover is in a cuboid shape and buckled to the top end of the recycling machine body in an embedded mode, the first cover opening handle is adhesively connected to the upper right corner in an embedded mode, the cleaning protection cover is in a cuboid shape and buckled to the lower side of the right end of the recycling machine body in an embedded mode, and the second cover opening handle is adhesively connected to the lower side of the right end in an embedded mode. In the using process of the device, the garbage recycling mechanism can be sealed through synchronous operation of secondary baffles composed of springs, gears, racks, ejector rods and the like, secondary baffle isolation recycling can be carried out on the device when the device is in use, the secondary baffles can ensure the sealed state when the recycling cover is opened, escape of pungent odor is reduced when a user recycles garbage, the recycling cover can be automatically locked when the device is filled, and excessive accumulation can be better prevented.

The invention discloses a vehicle lamp control method, and belongs to the technical field of vehicle engineering. The vehicle lamp control method includes the steps that signal information of trafficlights closest to a current location and state information of a vehicle are acquired; a vehicle lamp control strategy is determined based on the signal information and the state information; and vehicle lamps of the vehicle are controlled based on the vehicle lamp control strategy. According to the vehicle lamp control method, the vehicle lamp control strategy can be determined through the signalinformation of the traffic lights and the state information of the vehicle, the vehicle lamps are controlled according to the vehicle lamp control strategy, since the vehicle lamps can be automatically controlled, it is ensured that the vehicles lamp can be opened or closed in an adaptive mode at the entrance at which the traffic lights are located, the power consumed by the vehicle lamps of the vehicle at the intersection at which the traffic lights are located is reduced, and the purposes of energy saving and emission reduction are achieved.

The invention provides a novel cabinet door for a medical cleaning machine, and relates to the field of medical cleaning equipment. The novel cabinet door comprises a cabinet door assembly. The cabinet door assembly comprises a door support frame, a door assembly, a driving mechanism and a locking mechanism, the door support frame is of a frame structure, the door assembly is in slide fit with the door support frame, the driving mechanism and the locking mechanism are mounted on the door support frame, the driving mechanism is used for driving the door assembly to slide, the door assembly can be in a first state and a second state, the door support frame can be closed by the door assembly in the first state and can be opened by the door assembly in the second state, and the locking mechanism is arranged at the edge of the door support frame and is used for locking the door assembly. The novel cabinet door has the advantages that the novel cabinet door is simple in structure, can be conveniently and quickly operated and is provided with a locking device, and accordingly good sealing effects can be realized; a doorsill main plate capable of freely moving is arranged at a doorsill position, accordingly, grooves in a doorsill can be closed on the premise that the door assembly can be assuredly closed and opened, and cleaning trolleys and cleaned articles such as surgical beds and wheelchairs can be assuredly smoothly pushed in and out of cleaning cabins.

The invention relates to the technical field of constructional engineering and discloses a construction method for a pit-in-pit profile steel interior support of a super high-rise building. The construction method comprises steps as follows: S1, adopted steel sheet piles are subjected to receiving inspection and stacked; S2, positioning paying-off is carried out firstly, and then a guide bracket is mounted; S3, Larsen steel sheet piles are subjected to pile driving; S4, a stand column, a first support and a second support are mounted; and S5, the interior support and the steel sheet piles aredismantled to be recovered. According to the construction method for the pit-in-pit profile steel interior support of the super high-rise building, a pile driver strikes the Larsen steel sheet piles and the stand column and then steel enclosing purlin and profile steel support beams are mounted, a complete profile steel support system is formed, after early pouring maintenance of a tower raft is finished, the profile steel supports are dismantled and recovered, nodes of the pit-in-pit profile steel interior support of the super high-rise building are optimized, the nodes comprise collision nodes of the profile steel stand column and reinforcements, connecting nodes of the stand column and the support beams and connecting nodes of the enclosing purlin and the steel sheet piles, and therefore, the problem of inconvenience in subsequent mounting and recovery is effectively solved.

The invention discloses a system and method capable of automatically closing a fireproof door. The system comprises a remote monitoring system, a communication board, a relay, a motor, a door closing device, the fireproof door, a communication network and an electromagnet. The remote control system conducts control to generate instructions through the communication board according to monitored signals and sends the instructions to the relay, and the relay controls the power-on and power-off states of the motor according to the received instructions. When the fireproof door needs to be opened, the motor controls the door closing device to open the fireproof door, and the normal-open state of the fireproof door is kept through the electromagnet. When the fireproof door needs to be closed, the remote monitoring system sends the instructions, the relay is used for disconnecting a power source, the electromagnet is powered off, and the fireproof door is closed through the door closing device. By means of the system and method capable of automatically closing the fireproof door, cost can be reduced, and potential safety hazards in the prior art are eliminated. Even when the power source is interrupted or the communication network breaks down, the system can still close the fireproof door according to the related fire protection regulation, and therefore the purposes of isolating a fire alarm area and preventing fire and smoke are achieved.

The invention discloses a rotary kiln automatic feeding system and belongs to the field of metallurgy. The rotary kiln automatic feeding system comprises a kiln cylinder, a feeding pipe which extendsinto a preheating section of the kiln cylinder, a sealing cabin which is connected to the upper end of a material pipe, a feeding cabin which is arranged at the upper end of the sealing cabin, an upper sealing valve and a lower sealing valve; and the upper sealing valve and the lower sealing valve are arranged at the inlet and the outlet of the sealing cabin respectively. The rotary kiln automaticfeeding system is characterized in that a low material level sampling probe is arranged in the feeding pipe; a material in the feeding cabin is a conductive material; a slide rheostat and intermediate relays are sequentially connected to the other end of the low material level sampling probe; the intermediate relays are in ground connection; a normally closed contact of each intermediate relay isconnected with a time relay; and electromagnetic valves are connected to the upper sealing valve and the lower sealing valve respectively. By utilizing the feeding system, the material can be ensurednot to obstruct normal closing of the lower sealing valve arranged on the sealing cabin, the gas tightness of the interior of the kiln cylinder can be ensured, and a protection function on the material can be formed.

A multi-link door hinge capable of facilitating the closing of a door and implementing the shock-absorbing performance of the door during the closing thereof. To this end, the multi-link door hinge includes: a main frame mounted to a main body of an object having a door; a door frame mounted to the door; a body frame rotatably connected to a first side of the main frame; an inner link and an outer link connecting the door frame to the body frame; a plate spring link allowing the outer link to be rotatably connected to the main frame; a locking piece rotatably mounted between side walls of the inner link; an elastic member; and a hook, a first side of which is fixed in the body frame and a second side of which is configured to be held in a second side of the locking piece.

The invention discloses a clamp for car door coating. The clamp comprises a car door positioning part, as well as a first side wall positioning part and a second side wall positioning part which are connected with the car door positioning part, wherein a first clamping groove is formed in the first side wall positioning part; a second clamping groove is formed in the second side wall positioning part; at a pretreatment electrophoresis section, the car door positioning part is connected with a car door inner plate in a positioning mode, and a side wall metal plate is clamped in the first clamping groove, so that the car door inner plate has a preset open angle relative to the side wall metal plate; at a finishing coat section, the car door positioning part is connected with the car door inner plate in the positioning mode, and the side wall metal plate is clamped in the second clamping groove. According to the clamp provided by the invention, the car door inner plate can be positioned at the pretreatment electrophoresis section and the finishing coat section respectively, so that the car door inner plate maintains different states relative to the side wall metal plate under two states, pretreatment electrophoresis operation and finishing coat operation are reliably carried out, the amount of clamps is reduced, and the total cost of coating process is reduced.

The invention discloses a tristate LED lamp control device and a control method thereof. The tristate LED lamp control device comprises LED lamps and an LED power supply. A light-control synchronous signal is acquired via a light-control circuit, and a motion or sound sensing signal is acquired via a dynamic sensing circuit. The LEDlamps comprise a first LED lamp and a second LED lamp. The light-control synchronous signal is connected with the first LED lamp and the LED power supply via a first switch circuit. The motion or sound sensing signal is connected with the second LED lamp and the LED power supply via a second switch circuit. The light-control synchronous signal is connected with the first LED lamp and the LED power supply via the first switch circuit so as to control output of the motion or sound signal. The LED lamps are off in the daytime, the LED lamps are low on when no one moves in the sensing region at night, the LED lamps are high on when someone moves in the sensing region, and electric energy is saved. The structure is simple and reasonable, the operation is flexible, and energy consumption is low.

The invention relates to the technical field of kitchen utensils, in particular to a rotary seasoning box. The rotary seasoning box comprises a placement box of a cylindrical structure, wherein a bearing is arranged in the center of the placement box; the lower surface of a top cap is connected with the opening of the placement box; a retraction groove is formed in the side wall of a fan-shaped groove; one side of a limiting plate is connected with one side of a retraction cover; a torsion spring is mounted in the position, close to the center of the top cap, of the retraction groove; a limiting groove is formed in the side, far away from the retraction groove, of the fan-shaped groove; the side, far away from the limiting plate, of the retraction cover is connected with the limiting groove; a spring and a fixture block are arranged in a mounting groove; one end of the spring is fixedly connected with the fixture block; and a connecting groove is formed in the side, close to the retraction groove, of the upper part of the top cap. The rotary seasoning box is simple in structure, brings convenience for taking seasonings and prevents the seasonings from being mixed, space occupation is reduced, and placement of the seasonings is guaranteed, so that the taste of cooked food is guaranteed.

The invention provides a device for aligning a stopper rod precisely. The device is composed of a mechanical automatic control system and a refractory material system. The mechanical automatic controlsystem comprises a cross beam, an angle adjusting bolt, a supporting plate, a guide positioning rod, an outer casing, a sliding core rod, a lifting adjusting loop, a hollow hydraulic cylinder, a pullrod, a shock absorbing spring and a spring compression adjusting nut; the refractory material system comprises an adjusting core rod, a stopper rod, a stopper rod head, a nozzle brick and a seat brick. The device is improved based on an existing stopper rod lifting device. Matched with an aligning process for an intermediate stopper rod, the aligning position of the stopper rod is adjusted by means of the angle adjusting bolt, the length of the stopper rod is adjusted by means of the adjusting core rod, and the central position of the sliding core rod is fixed by means of a positioning rod embedded to the outer casing to achieve precise alignment. The device has the advantages that the stopper rod which is aligned is unlikely to shift and is convenient to detach and debug.

The invention discloses a refrigerator door closer. The refrigerator door closer comprises a hinge, wherein a tail wing is arranged at the tail end of the hinge; a rotating shaft is arranged at the tail end of the tail wing; a locating plate is arranged at the top end of the rotating shaft; a shaft sleeve and a door closer main body are sleeved with the rotating shaft; the door closer main body comprises a door closer support, a door closer fixed plate and a door closer rotary plate. With the innovative structural design, the refrigerator door closer has the benefits that (1), the refrigerator door closer can be closed in a small angle without the help of external force, so that the usability requirements of a refrigerator can be met, and correct closing of a refrigerator door can be ensured even through the refrigerator door can not be closed properly by a user; (2) component abrasion caused by the fact that a current refrigerator door closer adopts interference fit can be avoided, so that a door closing effect of the door closer can be kept for a long time; (3) matching failure of opening and closing of the door, which is caused by transportation vibration, inappropriate installation even component dislocation resulted from carelessness in opening and closing the door can be avoided, and abnormal noise generated by friction and collision can be avoided.

The invention provides a cargo compartment door opening and closing positioning device which comprises a left compartment door, a right compartment door and a compartment body, and the left compartment door and the right compartment door are both rotationally arranged on the rear portion of the compartment body and each comprise a first positioning assembly, a clamping table and a mounting plate;two groups of first positioning assemblies are arranged; the first positioning assemblies comprise first positioning rods, second positioning rods, rocking handles, gears, first racks, first connecting plates, first elastic pieces, second racks, second connecting plates, second elastic pieces, first mounting covers and positioning tables used for penetrating through the first positioning rods andthe second positioning rods; the mounting plate is of an I-shaped structure; the number of the clamping tables is four, the four clamping tables are located at the four ends of the mounting plate respectively, and clamping grooves used for clamping the first connecting plates and the second connecting plates are formed in the clamping tables; and a second positioning assembly for driving the mounting plate to move is arranged on the left compartment door or the right compartment door. The two compartment doors can be positioned, the closing firmness of the two compartment doors is improved, and the driving safety is guaranteed.

The invention relates to the field of mechanical pneumatic control, in particular to a two-way pneumatic control valve. The technical problems that as for an existing pneumatic control valve, liquid is prone to flowing back, the pneumatic control valve cannot be closed tightly, and consequently, the function gets out of control are solved. The two-way pneumatic control valve comprises a shell provided with a liquid inlet and a liquid outlet, a jacking rod arranged in the shell, and a valve element matched with the jacking rod and used for opening and closing the liquid inlet; the front end ofthe valve element is used for opening and closing the liquid inlet, a cavity is formed between the tail end of the valve element and the shell, and the shell is provided with a first control gas inletwhich communicates with the cavity formed by the tail end of the valve element and the shell; the tail end of the valve element is connected with a valve rod, the tail end of the valve rod is slidably limited to the shell, and the valve rod is sleeved with a return spring; and the shell is further provided with a second control gas inlet used for inputting external gas for controlling action of the jacking rod. The structure of a valve communicating the inlet with the outlet is improved, a path is opened or closed by adopting a control gas driving mode, and the problem of possible backflow issolved.