264results about How to "Small space requirement" patented technology

The invention belongs to the technical field of environmental sanitation machinery, and particularly relates to a high-speed low-noise centrifugal fan with an air filtering effect, the high-speed low-noise centrifugal fan comprises a fan volute, a fan impeller is mounted in the fan volute, the fan impeller comprises a front disc, a middle disc and a plurality of fan blades, the fan blades are located between the front disc and the middle disc, and the fan blades are arranged in the fan volute. A flow channel of the fan impeller is formed by the front disc, the middle disc and the space between every two adjacent fan blades, and a driving motor is installed on the rear side of the fan volute. According to the high-speed low-noise centrifugal fan with the air filtering effect, brand new plans are made on the blade shape, the blade structure, the volute, the volute tongue and the overall structure of the fan, and particularly, the cyclone separator is additionally arranged at the air inlet of the fan, so that high-speed air entering the volute of the fan is rapidly separated and purified; and dust and other garbage in the gas are settled and separated, so that the quality of air discharged into the atmosphere from an outlet of the fan is improved, and secondary pollution of environmental sanitation operation is reduced.

The invention discloses a foldable composite configuration vertical take-off and landing unmanned aerial vehicle which comprises a fuselage, a front wing, a rear wing, a control plane, an execution mechanism, a rotor wing motor and a propeller, the front wing and the rear wing are connected with the fuselage through a front folding mechanism and a rear folding mechanism respectively, and the front wing and the rear wing are in an X-shaped layout after being unfolded. Rotor motors and propellers are installed on the front wings, control surfaces and execution mechanisms are installed on the rear wings, and the front wings and the rear wings can be folded to be attached to the fuselage. According to the unmanned aerial vehicle, only one power system is used, the unmanned aerial vehicle has the vertical take-off and landing capacity and high flexibility of a multi-rotor unmanned aerial vehicle and the low-energy-consumption cruising and high-speed flying capacity of a fixed-wing aircraft at the same time, the wings can be folded to be attached to the fuselage, the outer contour is cylindrical after folding, and the unmanned aerial vehicle is compact in structure and more convenient to store, transport and carry; in addition, the device can support the modes of barrel type launching, ground takeoff, handheld takeoff, high-altitude spreading and the like for deployment.

The utility model discloses a dual-motor driving system which comprises a first motor and a second motor which are vertically arranged, the first motor and the second motor are close to each other, motor shafts of the first motor and the second motor are arranged in a back-to-back mode, and the motor shaft of the first motor is in transmission connection with a first output shaft through a first transmission assembly. A motor shaft of the second motor is in transmission connection with a second output shaft through a second transmission assembly, the first output shaft and the second output shaft are coaxial, and the distance between the first output shaft and the motor shaft of the first motor is equal to the distance between the second output shaft and the motor shaft of the second motor. The utility model has the advantages that: the layout is reasonable, the radial arrangement of the first motor and the second motor can greatly reduce the axial size, reduce the occupied arrangement space of the chassis structure, and can give consideration to the dynamic property and economical efficiency of the whole vehicle to the greatest extent. According to the design, the requirement for the space of the whole vehicle is low, and wide applicability is achieved.

The invention relates to the technical field of steel plate machining, in particular to a polishing, washing and drying all-in-one machine which comprises a machine body, a polishing mechanism, a washing mechanism and a drying mechanism, and the polishing mechanism is used for polishing a steel plate; the washing mechanism is used for washing the polished steel plate; the drying mechanism is used for drying the washed steel plate; the washing mechanism comprises a first conveying module, a spraying module and a water absorption module, the first conveying module is used for enabling the plate to sequentially pass through the spraying module and the water absorption module, the spraying module is used for spraying cleaning liquid to the surface of the plate, and the water absorption module is used for wiping the sprayed plate. Through the polishing mechanism, the washing mechanism and the drying mechanism which are sequentially arranged, polishing, washing and drying actions on the steel plate are integrated, the structure is compact, the requirement for space is not large, and application and popularization are easy.

The utility model provides an auxiliary device for repairing construction of a trenchless pipeline lining. The auxiliary device for repairing construction of the trenchless pipeline lining comprises a transportation track, a transportation assembly and a splicing assembly, the transportation track is arranged in the pipeline and is parallel to the whole axial line of the pipeline, and the transportation track is arranged at the top of the middle guide pipe; the conveying assembly is movably arranged on the conveying rail, the splicing assembly is arranged on the conveying assembly, and the splicing assembly clamps and adjusts the lining pipe pieces to preset positions to splice and install the lining pipe pieces so as to form the repaired lining ring pieces. The utility model relates to the technical field of urban pipeline non-excavation repair construction, and can solve the problem that lining pipe pieces are difficult to transport and splice in the prior art.

The invention discloses a heat collection and heat removal integrated energy-saving enclosure structure and a heat collection and heat removal adjusting method thereof. In the structure, a roof subsystem comprises a roof radiation layer, a roof structure layer, a cavity located between the roof radiation layer and the roof structure layer, and a communicating device used for achieving air circulation and isolation between the indoor space and the cavity; the roof radiation layer comprises a plurality of inclined and side-by-side double-side shutter radiation units, each double-side shutter radiation unit comprises a condensation pipe, a central pipe rotationally sleeving the condensation pipe and shutter plates arranged on the two sides of the central pipe, one side of each shutter plate is provided with a sky radiation cooling material, and the other side of each shutter plate is provided with a solar heat collection material; the wall subsystem comprises a wall and evaporation pipes arranged in the wall, the upper ends of the evaporation pipes are in butt joint with the lower ends of the corresponding condensation pipes, and the evaporation pipes are used for storing heat-conducting media capable of absorbing heat and evaporating. Natural energy can be fully utilized in summer and winter to meet the cold and hot requirements, and the complexity and cost of the system are reduced.

The short-rod gate valve comprises a valve body, a valve rod, a valve cover, a hand wheel and a gate plate, an inlet flow channel and an outlet flow channel are arranged in the valve body, the gate plate is movably arranged in the valve body and used for controlling the inlet flow channel and the outlet flow channel to be communicated and closed, the valve cover is arranged on the valve body through a fastener, and the hand wheel is arranged on the valve cover. The valve rod penetrates through the valve cover, the inner end of the valve rod is connected with the gate plate, the outer end of the valve rod is connected with the hand wheel, the valve rod is movably connected with the gate plate through a thread structure, the valve rod is fixedly connected with the hand wheel, and an axial fixing structure is arranged, so that the valve rod and the valve body are relatively static in the axial direction. The hand wheel and the valve rod are fixed, the axial position of the valve rod is fixed, the valve rod and the gate plate are movably connected through threads, the action functions that the valve rod is relatively static and the gate plate is opened and closed are achieved, and the functions that the length of the valve rod is shortened and the overall space requirement of the valve is reduced are achieved.

The invention discloses a support carrier energy recovery system and method, and belongs to the technical field of energy recovery, and the support carrier energy recovery system comprises an oil tank, a hydraulic pump, a first one-way valve, a two-position three-way electromagnetic directional valve A and a three-position three-way electromagnetic directional valve A. The invention aims at the support carrier energy recovery system; energy released by the lifting oil cylinder is used as a power source of the variable-amplitude oil cylinder, so that effective cyclic utilization of internal energy of the hydraulic system is realized. The system not only improves the energy efficiency of the system, but also effectively reduces the energy consumption of the system. Secondly, by designing the scheme that two sets of hydraulic circuits share one set of energy recovery line, the space requirement of the system is greatly saved, the system structure is simplified, the system adopts a two-stage energy recovery strategy, the energy recovery efficiency and stability are greatly improved, and the energy recovery cost is reduced. The problems of low energy conversion efficiency, low energy recovery efficiency and large system pressure fluctuation in a traditional mode are solved.

The invention relates to a railway tunnel rapid evacuation system and method capable of automatically aligning and unfolding, the system comprises a guide rail and a power supply unit, the guide rail and the power supply unit are installed in a tunnel, the system further comprises an evacuation device, the evacuation device is connected with the guide rail, and a control unit is in communication connection with the evacuation device. The power supply unit is connected with the evacuation device; when a dangerous case occurs, the control unit controls the moving unit to move on the guide rail and stops at the door of the train through the sensor, then the control unit controls the lock catch to be loosened, and the evacuation stairway is close to the train; or the evacuation stairway and the platform plate are folded and locked through a lock catch, and the evacuation device is folded. The emergency stairway, the moving unit and the guide rail are arranged, the control unit controls the moving unit to move on the guide rail, the train door can be rapidly reached, the simple emergency stairway between the train door and the platform can be rapidly formed, and therefore the safety of passengers in an accident is guaranteed.

The invention relates to the technical field of motor braking, and discloses an automatic braking system for power failure of a linear motor. A braking mechanism is arranged between a secondary transplanting block and a linear rail; the braking mechanism comprises a base block and a sliding block, a magnetic attraction assembly is arranged between the base block and the sliding block, and a hydraulic band-type brake assembly used for braking is arranged on the sliding block; the hydraulic band-type brake assembly used for braking is driven by the magnetic attraction assembly to work, that is, after the linear motor is powered off, a coil is automatically powered on and magnetized, a magnetic attraction piece is attracted to the base block, then the magnetic attraction piece drives a piston to move through a connecting rod, a profiling push block is driven to stretch out through the hydraulic effect to tightly hold a linear rail, and therefore the braking function is achieved; under the action of external atmospheric pressure, the piston and the profiling push block are shrunk and reset again; the system is exquisite in structural design, high in response speed, low in space requirement and easy to install, the cost is greatly reduced, and the occupied space is reduced.

The invention relates to a flexible intelligent production line and a feeding method. The flexible intelligent production line comprises automatic loading and unloading equipment, feeding equipment, an intelligent storage library and processing equipment. The automatic loading and unloading equipment and the intelligent storage library are located on the two opposite sides correspondingly, the machining equipment and the intelligent storage library are also located on the two opposite sides, and the number of the machining equipment is one. Various workpieces are stored in the intelligent storage warehouse, the AGV conveys the workpieces to be machined to the automatic loading and unloading equipment, and the automatic loading and unloading equipment conveys the workpieces to the feeding equipment or directly conveys the workpieces to the machining equipment; and the feeding equipment is responsible for conveying the workpieces among the equipment and returning the processed workpieces to the intelligent storage library or the automatic loading and unloading equipment. By optimizing the flexible production line layout and the workpiece conveying process, efficient and flexible production process management is achieved, and the production efficiency and the intelligent level are improved.

The invention discloses a high-energy metal ion implanter. The high-energy metal ion implanter comprises an ion source system, a movable electrode, an accelerator, a deflection system, a scanning system and a target chamber system which are arranged in sequence, the ion source system focuses laser on the surface of a refractory metal target material for bombardment to generate refractory metal plasma; the movable electrode is used for leading out a refractory metal ion beam; the accelerator is used for accelerating the refractory metal ion beam; the deflection system is used for performing mass-to-charge ratio screening on the accelerated ion beam; and the scanning system is used for controlling the screening ion beam to scan the material surface in the target chamber system. According to the method, the laser is focused on the surface of the refractory metal target material for bombardment to generate the refractory metal plasma, so that the flow intensity of the refractory metal ion beam is improved, and the injection efficiency and the injection effect are improved.

A double-motor double-gear gearbox of a pure electric loader comprises two motors, a coupling input assembly for dynamically coupling the two motors, a gear shifting assembly with a two-gear speed changing function, an output shaft and a brake installed on the output shaft. The transmission is characterized in that the coupling input assembly, the gear shifting assembly and the output shaft are sequentially meshed from top to bottom and distributed in a parallel shaft mode, and a three-level parallel shaft structure is formed. A three-stage parallel shaft structure is formed, the axial size of the gearbox is shortened, the structural compactness of the gearbox is improved, the space requirement for arrangement of the gearbox is lowered, flexible arrangement of the gearbox and a transfer case on the loader is facilitated, the power output requirement for speed reduction and torque increase is met, and the requirement for output torque of a motor is lowered; walking driving requirements under different working conditions are met, and the weight and cost of the gearbox are reduced.

The invention discloses an assembly type precast beam, and relates to the technical field of constructional engineering, the assembly type precast beam comprises a cross beam, and the cross beam comprises a plurality of beam bodies; a connecting column; the fixing columns are located between the opposite cross beams, and inserting grooves allowing the connecting columns to be inserted therein are formed in the fixing columns; a template block; the fixing columns are provided with limiting assemblies, and when the opposite formwork blocks abut against each other, the limiting assemblies limit the connecting columns to be disengaged from the inserting grooves. The connecting column is provided with an input pipe and an output pipe; an input groove is formed in the fixing column, and a grouting opening is formed in the fixing column. An output groove is formed in the fixed column, and a slurry outlet is formed in the fixed column; an upper communicating hole is formed in the beam body, and a lower communicating hole is formed in the beam body; a return pipe is arranged in the beam body far away from the fixed column; when the adjacent beam bodies abut against each other, the baffles are clamped into the partition grooves. An upper slurry covering groove is formed in the beam body, and a lower slurry covering groove is formed in the beam body. The assembly construction time of the precast beam can be shortened.

This invention provides a power packaging structure and power module, including a substrate, a power chip, several conductive pillars, a molding compound, and several front-side lead-out terminals. The conductive pillars are sequentially divided into a first structure and a second structure along a direction away from the top surface of the substrate, and the bottom surface of the first structure is fixed to the electrode lead-out area on the top surface of the substrate. Since the cross-sectional area of ​​the first structure is smaller than that of the second structure of the conductive pillars, and several conductive pillars are fixed to the top surface of the substrate, the space requirement for the conductive pillars on the substrate is greatly reduced by decreasing the contact area between a single conductive pillar and the top surface of the substrate, thereby reducing the size of the substrate and consequently lowering the packaging cost.

The invention discloses a micromotor-driven distributed turbulent flow pumpless liquid cooling device for space thermal control. The micromotor-driven distributed turbulent flow pumpless liquid cooling device comprises a pipeline body and an impeller pump, the impeller pump comprises an impeller with the outer diameter being D and capable of actively rotating. When the impeller pump is used for overall heat dissipation of a single small-size electronic element, one impeller pump is arranged in the cooling flow channel at the position 0.5 D-1. 5D away from the upstream of the small-size electronic element; when the impeller pump is used for eliminating the hot spots of the large-size electronic element, one impeller pump is arranged in the cooling flow channel at the position 0.5 D-1. 5D away from the upstream of each hot spot to be eliminated. An external pump is removed, and the impeller pump is arranged in the cooling flow channel, so that on one hand, a cooling working medium is pumped, on the other hand, a turbulent flow effect is achieved on the cooling working medium, a boundary layer is broken, and the heat dissipation effect is improved. In addition, for a large-scale heat dissipation scene, a plurality of impeller pumps can be arranged in the cooling flow channel in an array mode, the impeller pumps can be placed at local hot spots in a targeted mode, targeted heat dissipation is achieved, and the heat dissipation efficiency and uniformity are further improved.

The utility model provides an intelligent inspection robot transmission system which comprises a steering engine assembly, a shock absorber assembly and a driving assembly, and a hub rotating support shaped like a Chinese character'wang 'is arranged between the driving assembly and the steering engine assembly and located on the front end side of the driving assembly. The shock absorber assembly is connected with the rear upper end of the hub rotating support shaped like the Chinese character'wang 'and the rear end side of the traveling assembly, a joint motor is adopted for a horizontal driving part of the steering engine assembly, and a servo motor is adopted for a front-back driving part of the traveling assembly. By adopting the mode that the joint motor controls the transmission system to steer and the spline is matched with and fixes the joint motor, steering integrated control is added, the transmission accuracy is improved, the risk that the joint motor is exposed and is prone to damage is reduced, the requirement for the space size of a chassis is reduced, the structure is more compact, and rapid mounting and dismounting are convenient; the steering engine assembly and the walking assembly are independently designed, so that the whole transmission system meets the national II-class anti-explosion requirement and the IP66 / 68 sealing grade requirement.

The utility model provides a medium fluid control valve for medium-power laser fine micromachining, which is characterized in that a nitrogen channel and a left gas inlet channel arranged on a base are communicated with a diaphragm arranged on the upper surface of the base so as to control the gas feeding and stopping actions of nitrogen; an oxygen channel and a right air inlet channel which are formed in the base are communicated with a switch valve mounted on the upper surface of the base so as to control the ventilation and cutoff actions of oxygen; a right air inlet channel and an exhaust channel are formed in the base; the right air outlet channel is communicated with a proportional valve mounted on the upper surface of the base; the left air inlet channel and the right air outlet channel are communicated in the base through a transition channel, and a movable sealing piece formed by embedding a plug into an inner hole of the guide sleeve is arranged in the transition channel in a sliding mode so as to plug the left air inlet channel or the right air outlet channel to achieve the shuttle valve function; the transition channel is communicated with a shuttle valve structure air outlet formed in the base. And multiple valves are integrally installed, so that the compactness of the valve group is improved, interfaces are reduced, and the possibility of leakage is greatly reduced.

This utility model provides a car roof handle and vehicle based on a four-bar linkage, belonging to the field of automotive parts technology. It includes: a base with a proximal hinge and a distal hinge, located at different positions along the depth of the base; one end of a first rocker arm hinged to the proximal hinge of the base, and the other end of the first rocker arm hinged to a connecting arm; one end of a second rocker arm hinged to the distal hinge of the base, and the other end of the second rocker arm hinged to a connecting arm; the connecting arm is hinged to the handle body. The first rocker arm, the second rocker arm, the connecting arm, and the base constitute a four-bar linkage. The advantages of this utility model are: the four-bar linkage allows for extension and retraction between the handle body and the base, enabling the handle body to be retracted and close to the base when not in use, and extended when in use, saving interior space and adapting well to bumpy driving environments.

The invention relates to the field of sales data statistics, in particular to an AIGC-based sales data statistics method and system and a storage medium, and the method comprises the steps: reading wide table setting data, and determining wide table data through the wide table setting data; the method comprises the following steps: reading query data, determining required wide table data through the query data and a preset AIGC, and determining an SQL query statement through the query data, the AIGC and the required wide table data; determining the grammar correctness of the SQL query statement through a preset compiler and the SQL query statement, and determining the semantic correctness of the SQL query statement through the AIGC and the SQL query statement; determining result data through the SQL query statement and the required wide table data; formatted data is determined through the AIGC and the result data, and output data is determined through the formatted data and the result data. The method has the effect of reducing the use threshold of a user.

Provided is an ultrasonic proximity switch. Apparatus and methods for identifying an actuator by a sensor by applying sound to the actuator are shown and described. The device is particularly used in security applications. The sensor and the actuator can move relative to each other, and the sensor comprises a sound wave transmitter, a sound wave receiver and a calculation unit. The sound wave transmitter is configured to transmit sound waves in the direction of the actuator. The sound wave receiver is further configured to receive the sound wave reflected from the actuator and to convert it into an analog signal. And the calculation unit converts the analog signal into a digital signal, and realizes the identification of the actuator by balancing the digital signal with a reference signal.

A closure system for door openings defined in a wall (P) and comprising:-a quick-opening door (1) adjustedly installed within the door opening (H) and featuring a flexible roll-up sheet (11), an upper casing (12), and vertical uprights (3) equipped with guides (31) for the displacement of the flexible sheet (11); a fire door (2) installed at one side of the wall and comprising at least one fireproof layer (21, 23), for the opening and closure of the door opening (H), a perimeter frame constituted by the vertical uprights (3) and a rearward fireproof cover (4) of the upper casing (12) of the quick-opening door (1).

The invention discloses a main wing tilting and folding mechanism for supporting multi-mode variant flight of an aircraft. The main wing tilting and folding mechanism comprises a main bearing plate in a fuselage, a driving mechanism and a central wing, wherein the driving mechanism and the central wing are mounted on the main bearing plate in the fuselage; the driving mechanism comprises a transmission belt mechanism, a driving support arm and two driving rod groups; the transmission belt mechanism is mounted on a main bearing plate in the machine body; the driving support arm is fixed on a main bearing plate in the machine body in a sliding manner and is driven to move back and forth through a transmission belt mechanism; two ends of the driving rod group are respectively hinged with one side of the driving support arm and the corresponding outer wing; the outer wing is connected with the central wing through a crossed roller bearing; in the process that the transmission belt mechanism drives the driving supporting arms to move front and back, the driving rod sets are synchronously driven to move front and back, and therefore the outer wings are driven to rotate around the central wing with the crossed roller bearing as the support. The tilting wing unmanned aerial vehicle has enough high strength, rigidity and stability, and switching among multiple flight modes of the tilting wing unmanned aerial vehicle can be achieved.

The present application relates to the technical field of accelerator beam measurement, and particularly discloses a water gravity type inner target beam measurement device, which comprises a beam measurement assembly, a gravity adjustable cooling assembly, a lever balance assembly and a limiting piece, the beam measurement assembly is connected to one end of the lever balance assembly through the gravity adjustable cooling assembly, and the limiting piece is arranged on the side surface of the lever balance assembly. The device adopts a seesaw type structure, fully utilizes the installation space in the cyclotron shell, utilizes the gravity of the cooling liquid as the power of the seesaw type structure, can omit the arrangement of a complex power driving piece, is small in size, simple in structure, low in cost, good in cooling effect, and stable in the beam size of the inner target measurement piece during measurement.

A method and a circuit arrangement for operating a stepper motor in a voltage-controlled or voltage-regulated operating mode are described, the circuit arrangement having a bridge circuit provided for a motor coil (A) and having a charge pump, the bridge circuit having semiconductor switches (HS1, HS2, LS1, LS2) for applying first and second PWM voltages (U(LA1), (LA2)) having mutually opposite polarities to the motor coil (A), the charge pump being used to switch at least the high-side semiconductor switches (HS1, HS2) of the bridge circuit. Since the charge pump has a blocking time or dead time, after switching a first semiconductor switch, the blocking time or dead time must be waited for before another semiconductor switch can be switched, so that the time interval between the rising edge of one of the two PWM voltages and the later rising edge of the other PWM voltage is increased at least to the extent that the blocking time or dead time of the charge pump expires.

The invention provides a main and auxiliary hook lifting type eccentric lifting appliance and a lifting method, and relates to the technical field of ship lifting, the main and auxiliary hook lifting type eccentric lifting appliance comprises a supporting beam, a main lifting hook and an auxiliary lifting hook, lifting shaft assemblies are arranged on the two sides of the supporting beam, and upper connecting locks are connected to the lifting shaft assemblies; the upper connecting lock comprises a first joint-free rope loop rigging, a second joint-free rope loop rigging and a third joint-free rope loop rigging; the first joint-free rope loop rigging, the second joint-free rope loop rigging and the main lifting hook are connected, the third joint-free rope loop rigging and the auxiliary lifting hook are connected, under the condition that the load of the main lifting hook is limited, the load and the distance of lifting points can be flexibly adjusted according to the gravity center position of a lifted object through matched use of the auxiliary lifting hook and the main lifting hook, and the lifting efficiency is improved. The lifting bearing of the main lifting hook and the auxiliary lifting hook is reasonably distributed to adapt to different lifting environments, so that the lifting appliance is lighter, the application range of the lifting appliance is widened, and the lifting requirements of various complex ships are met.

The steam sterilizer comprises a sterilizer body, an outer cover structure, an electric appliance box and an operation panel, the outer cover structure is arranged on the side face where a pipeline area of the sterilizer body is located, the electric appliance box is arranged on the outer cover structure, and the operation panel is arranged on the electric appliance box and connected with the sterilizer body. The outer cover structure is used for operating the sterilizer main body, and an area enclosed by the outer cover structure and the sterilizer main body in the pipeline area is a maintenance area. The electric appliance box is integrally arranged on the outer cover structure, the operation panel is arranged in the electric appliance box and is connected with the sterilizer main body, and the operation panel of the control area is also arranged in the area where the electric appliance box is located, so that the maintenance space of the electric appliance box is consistent with the operation space of the sterilizer main body, and maintenance can be realized without moving by personnel; the convenience is greatly improved, meanwhile, the requirement for maintenance space is reduced, the maintenance space does not need to be reserved on the side of the electrical box, and the space requirement for equipment use can be reduced.

The utility model discloses a multilayer combined filter structure of desulfurization dust remover, including tower body, at least one layer composite filler layer is arranged in the tower body, the composite filler layer is multilayer structure, and the regular shaped filler area, transition flow guide area, bulk packing area and support grating from top to bottom include successively, the regular shaped filler area and bulk packing area outside all are provided with fixed frame, the regular shaped filler area and bulk packing area are filled in the corresponding fixed frame respectively, through the high specific surface area of bulk packing, can effectively strengthen gas liquid contact in bulk packing area, improve mass transfer rate, and the low resistance characteristic of regular shaped filler can avoid partial pressure drop surge in regular shaped filler area, realizes the balance of desulfurization efficiency and energy consumption, reduces operating energy consumption while guaranteeing desulfurization effect.

The utility model provides a sliding door type sealing device for a coke pusher of a coke oven, which comprises a door cleaning side sliding door, a coal leveling side sliding door, a hanging wheel, a side wheel, a bottom wheel, a hydraulic support, a door cleaning side hydraulic cylinder and a coal leveling side hydraulic cylinder, the coke pusher door cleaning side and coal leveling side sliding door is arranged on the two sides of the coke pusher and defines a closed space with the coke pusher top sealing cover plate, and the coke pusher door cleaning side and coal leveling side sliding door is connected with the hydraulic support. The door cleaning side sliding door and the coal leveling side sliding door of the coke pusher are respectively driven by the door cleaning side hydraulic cylinder and the coal leveling side hydraulic cylinder to move through the hanging wheel, the side wheel and the bottom wheel. According to the technical scheme, the defects in the prior art are overcome, the problems that smoke dust on the machine side of the coke oven is not thoroughly collected and the smoke dust overflows are solved, and the smoke dust emission of the coke oven meets the requirements of an environmental protection department.

The utility model discloses a measuring device for an air entraining system of an aviation auxiliary power device, and relates to the technical field of air entraining systems of APU test bed. The device comprises a connecting pipeline, the connecting pipeline comprises a stainless steel hose, a first rigid connecting pipe, a second rigid connecting pipe, a third rigid connecting pipe, a silencer module and an exhaust pipe, one end of the stainless steel hose is connected with an APU air guiding pipe, the other end of the stainless steel hose is connected with the first rigid connecting pipe, and the first rigid connecting pipe is connected with the second rigid connecting pipe; the second rigid connecting pipe is connected with the third rigid connecting pipe, the third rigid connecting pipe is connected with the silencer module, and the silencer module is connected with the exhaust pipe. The pipeline arrangement is simple, the number of valves and elbows is small, the number of corresponding fault points is small, meanwhile, the space requirement is small, airflow is relatively smooth, and the manufacturing cost is low.