44results about How to "Simple mechanical structure design" patented technology

The invention provides a pressure type air cushion icebreaker. The pressure type air cushion icebreaker comprises a hovership composed of a ship body, a flexible skirt arranged around the ship body, a cab and a work room arranged on the ship body, and a hovering unit arranged in the ship body, wherein the ship body is rectangular, and three sets of aero-propeller propellers of the same structure are installed on the ship body through rotary supports and located at three corners of the rectangular ship body respectively. High-pressure gas sprayed from the flexible skirt acts on water and ice, the ship body is supported by the flexible skirt under the backlash action, and this is equivalent to the fact that the gravity of the ship body acts on water and ice, so that ice is broken. An air cavity formed between ice and water by high-pressure gas makes an ice layer lose flexible support of water, so that the ice layer is broken more easily. The pressure type air cushion icebreaker can work alone or be pushed by a thrustor installed behind another ship to move as an air cushion ice breaking platform.

The invention discloses a detachable multifunctional electric wheelchair bed. The detachable multifunctional electric wheelchair bed comprises a bed body and a wheelchair, wherein the bed body comprises a frame, a bed board, guide rails, armrests, rails and wheels. A wheelchair body comprises a backrest, armrests, a folding table, backrest electric push rods, a wheelchair seat plate, a wheelchairframe, wheelchair base electric push rods, leg supporting electric push rods, foot connecting electric push rods, leg supporting plates, foot supporting plates and chair wheels. According to the detachable wheelchair bed, the bed body can be separated from the wheelchair; the functions of all the parts are achieved through opening and closing of electromagnetic pins; a motor and a rod machine aresupported by power, so the wheelchair bed can be freely converted to realize nursing bed functions such as leg bending, back supporting and rollover and a function of supporting eating; the multifunctional wheelchair bed has the functions of a conventional wheelchair while meeting daily behavior requirements such as supination, sitting up, leg bending and leftward and rightward rollover; after thewheelchair is separated from the nursing bed, the bed can still be used.

The invention discloses an automatic overturning intelligent lifter. The automatic overturning intelligent lifter comprises a mechanical body consisting of a lifter main beam mechanism, an automatic leveling system and an overturning system, and a control system, and has the functions of automatic torque balancing, automatic swing prevention and precise positioning. The main beam, the automatic leveling system and the overturning system are all detachable structures. When the control system performs self-adaption balance adjustment, the swing caused in the rotating process is inhibited; and a grating ruler can be matched to perform precise positioning in a range of 500 mm. The intelligent lifter can bear objects of 10 t, is provided with a human-computer interaction touch interface, is fast in dynamic response, finishes automatic leveling within 30 s, reaches the leveling precision of +-0.02 degree, reaches the linear positioning precision of +-0.01 mm, reaches the turning precision of +-0.5 degree, finishes 90-degree smooth overturning of large workpieces within 10 min, is complete in protecting measures, and is high in working efficiency and safe and reliable in operation. The automatic overturning intelligent lifter is wide in application in such aerospace fields as medium-small aircraft body final assembly and airship assembly.

The invention discloses a mechanism capable of synchronously and quickly transmitting linear reciprocating motion and rotation motion. The mechanism comprises an upper meshing disc, a lower meshing disc, an electromotor, a fixing sleeve and a returning spring, wherein the electromotor is connected with the upper meshing disc by virtue of an electromotor shaft; the upper meshing disc is meshed with the lower meshing disc; an output shaft of the lower meshing disc is fixed on the lower meshing disc; the returning spring sleeves the output shaft of the lower meshing disc; the electromotor shaft, the upper meshing disc and the lower meshing disc are wrapped by the fixing sleeve; the fixing sleeve is fixed on the electromotor. According to the mechanism, the mesh discs are rotated by the power of the electromotor; the mechanism is capable of synchronously and quickly carrying out rotation and linear reciprocating motion when extruding a spring to move; meanwhile, the extrusion impact force is relieved by using the elasticity characteristic of the spring, thereby structurally exerting the flexible contact function; the mechanical structure is simple to design and manufacture; the control manner is simple and reliable.

The invention discloses a wind power variable pitch drive system, and particularly relates to an electric direct-driven wind power variable pitch drive system which is high in reliability, low in cost, high in efficiency and little in occupied space. The system comprises a hub, a variable pitch bearing outer ring and a variable pitch bearing inner ring, wherein the variable pitch bearing outer ring is arranged on the hub, and the variable pitch bearing inner ring is matched with the variable pitch bearing outer ring in a rotating mode. The system further comprises a linear drive mechanism which is rotatably installed on the circumferential edge of the variable pitch bearing inner ring, and one end of the linear drive mechanism is provided with a joint bearing which is hinged to the hub. Linear motions provided by the linear drive mechanism are directly transferred into rotation of the variable pitch bearing inner ring, a complex transmission structure is avoided, and accordingly the occupied space of the whole mechanism is substantially reduced, the whole mechanism is completely in the hub, holes do not need to be formed in the hub, rigidity of the hub is improved, and the system has the advantages of being low in weight, simple in structure, high in reliability, long in service life and the like.

The invention discloses a direct-driven redundant planar parallel mechanism control device and a redundant planar parallel mechanism control method. The device comprises a parallel mechanism body and a control unit. The parallel mechanism body comprises a movable platform and three parallel branches. The movable platform is in a shape of equilateral triangle and provided with an angular acceleration sensor and an acceleration sensor. Each parallel branch comprises a linear motor module with a displacement sensor, a rotary motor module with an encoder, a rigid active bar and a rigid passive bar. The control unit is connected with the angular acceleration sensor, the acceleration sensor, the linear motor module and the rotary motor module. Through hybrid driving of linear motors and rotary motors, the working space of the parallel mechanism is enlarged, and movement parameters of the movable platform are measured by means of the multiple sensors to serve as feedback signals, the movement control accuracy of the parallel mechanism reaches the high level.

The invention provides a magnetic field control system for driving a magnetic micro-nano robot. The magnetic field control system comprises a circuit board, a power amplifier, a base, a Helmholtz coil, a mobile platform and a microscopic observation platform, wherein the circuit board, the power amplifier and the Helmholtz coil are sequentially connected, and the base is connected with the Helmholtz coil, the mobile platform and the microscopic observation platform; the circuit board is used for receiving digital signals, converting the received digital signals into current signals and outputting the current signals to the power amplifier; the power amplifier is used for receiving the current signals output by the circuit board, amplifying the current signals and outputting the amplified current signals to the Helmholtz coil; the base is used for connecting the Helmholtz coil, the mobile platform and the microscopic observation platform; and the Helmholtz coil is used for generating acorresponding magnetic field so as to control the three-dimensional motion of the magnetic micro-nano robot. The magnetic field control system has the advantages of high control precision, stable working performance, easy kinematics calculation, simple mechanical structure design and convenient implementation.

The invention discloses assembly type indoor GIS (Gas Insulated Switchgear) transportation and installation equipment and a using method thereof. The assembly type indoor GIS transportation and installation equipment comprises bearing mechanisms for hoisting a GIS, lifting mechanisms for supporting the bearing mechanisms, travelling trolleys for driving the lifting mechanisms to operate, and traveling mechanisms used in conjunction with the traveling trolleys, wherein the two ends of the supporting mechanism are fixed to the traveling trolleys through the lifting mechanisms to form a portal frame; and the traveling trolleys are arranged on the traveling mechanisms. The assembly type indoor GIS transportation and installation equipment can not only realize the rapid installation and maintenance of the GIS, but also can be adaptively adjusted according to different GIS installation and use environments, can be recycled multiple times and has strong universality through the modular designof the travelling mechanisms, the travelling trolleys, the lifting mechanisms and the bearing mechanisms; in addition, the telescopic boom technology is applied to the lifting mechanisms; and boom pins and cylinder pins are arranged simultaneously and symmetrically on the lifting mechanism, so that the stress condition of a telescopic boom is improved very well, and the stability of the GIS transportation process is greatly improved.

The invention provides a marine vehicle like flying fish and mainly applies to the field of ships. The marine vehicle like flying fish comprises a propeller providing the power effect, a guide tube, a ship hull like the flying fish, a rotary support pillar and tail vanes. The whole device is pushed to move with the propeller as power, the ship hull like the flying fish floats on the water surface during low-speed movement, and the movement state of the whole device is adjusted by the aid of the rotary support pillar; the ship hull like the flying fish leaves the water surface during high-speed movement, and the movement state of the whole device is adjusted by the aid of the tail vanes mounted at the rear of the ship hull like the flying fish and having a function of an air rudder and in combination with the rotary support pillar.

The invention discloses a double-shaft tilting sample holder for a transmission electron microscope.The double-shaft tilting sample holder comprises a sample holder body, front-end tilting tables, driving rods, connecting rods, tilting shafts, rotary shafts, driving rod fixing shafts and a sample stage.Shaft holes are reserved in the front-end tilting tables, and the front-end tilting tables are connected with the sample holder body by the rotary shafts.The connecting rods, boss clamp grooves and driving rod clamp grooves are connected with one another by the rotary shafts.Two symmetric through movement guide grooves are formed in two sides of sample holder body front ends, the driving rods are fixed by the aid of the driving rod fixing shafts, and the constrained driving rods can be driven by a linear stepper motor at a holder body rear end to linearly reciprocate, so that the sample stage can rotate around the rotary shafts.The double-shaft tilting sample holder has the advantages that tilting angles of the sample stage can be precisely controlled by the high-precision linear stepper motor; the maximum tilting angles of the sample stage can be adjusted by the aid of included angles between bosses on the lower surfaces of the front-end tilting tables and the lengths of the movement guide grooves; the double-shaft tilting sample holder can be used with the conventional transmission electron microscope and is wide in universality.

The invention discloses a linkage balance beam-pumping unit, and belongs to the field of an oil production technique device, and especially relates to a linkage balance beam-pumping unit consisting of a slider-crank mechanism. The linkage balance beam-pumping unit is mainly composed of an asynchronous motor, a stand, a walking beam, a horse head, a left double-slider, a left double-linkage, a dual-axis motor, a dual-crank, a right double-linkage, a right double-slider, a reducer, a balancing weight block, a crank, and a base. The technical scheme is that the dual-axis motor is fixedly installed on the walking beam, and the output shaft of the motor is linked with the front end of the double-crank, and the other end of the double-crank is linked with the left and right double-linkages through a pin shaft; tail ends of the left and right double-linkages are equipped with the left and right double-sliders through the pin shaft, and the lower end of the slide block is provided with a roll wheel. The edge of the moving beam is welded with the side plate form a slide way; the left and right double-sliders are installed in the slide way, and the slide blocks are pushed to perform reciprocal rectilinear motion by the left and right double-linkages along with the length direction of the moving beam. The linkage balance beam-pumping unit is simple in structure, safe and reliable in use, and can adjust the balancing moment of the moving beam along with the change of the load at the suspending point of the pumping unit, thus the energy-saving and cost-reducing purpose is reached.

The invention discloses a four-rotor unmanned aerial vehicle capable of dwelling and stopping on a vertical plane, and belongs to the field of four-rotor unmanned aerial vehicles. The four-rotor unmanned aerial vehicle comprises a four-rotor unmanned aerial vehicle body and a vertical plane dwelling device, and the vertical plane dwelling device is fixedly installed below a fuselage of the four-rotor unmanned aerial vehicle body; the four-rotor unmanned aerial vehicle adopts an X layout, four motors are arranged at four end parts of vehicle arms, and the motors are connected with electronic speed regulators and are used for carrying out thrust control; the vertical plane dwelling device comprises cantilever claws, extension springs, a relaxation pull wire and a steering engine assembly; the cantilever claws are hinged to the front and rear parts of the unmanned aerial vehicle body, and the acting forces of the cantilever claws on the wall surface are increased through resilience forces of extension springs arranged in the middle; the steering engine assembly is installed in the middle of the lower portion of the unmanned aerial vehicle body and used for controlling and loosening the pull wire, then the cantilever claws of the front side dwelling device and the rear side dwelling device are pulled open in the spanwise direction, and acting force of the cantilever claws on the wall face is eliminated. The four-rotor unmanned aerial vehicle can be switched between the air mode and the dwelling mode, the task time of the unmanned aerial vehicle can be effectively prolonged, and the cooperative gain of the unmanned aerial vehicle and the dwelling device is improved.

The invention provides a pipeline internal detection system which comprises a receiving and transmitting system and a detector, the receiving and transmitting system is arranged at the position of an inlet and outlet metal hose of an oil depot tank, and the detector is a spherical detector and is put and recycled through the receiving and transmitting system. The receiving and transmitting system comprises a receiving and transmitting ball cylinder and a main pipeline, the main pipeline is the inlet and outlet metal hose pipeline of the oil depot tank, the receiving and transmitting ball cylinder communicates with the two ends of the pipeline, and the detector is received and transmitted through the receiving and transmitting ball cylinder. The ratio of the diameter of the detector to the pipe diameter is (0.7-0.8): 1. The pipeline spherical internal detector adopts equipment special for putting and recycling, and system operation is safe and simple. The capacitive micro machining ultrasonic sensor is adopted to well overcome many defects of a piezoelectric sensor, and has the advantages of high sensitivity, wide bandwidth, easiness in manufacturing, small size, low noise, wide working temperature range and easiness in electronic integration. The spherical internal detector has the advantages of simple mechanical structure design and flexible movement.

The invention provides an examination auxiliary all-in-one machine. The examination auxiliary all-in-one machine is composed of a movement module, an identification module and an examination paper separation and storage module, the examination paper separation and storage module is installed on the movement module, and the identification module is installed on the examination paper separation and storage module; and the movement module drives the device to integrally move according to a set track, the identification module identifies face data and compares the face data with data pre-recorded in the background, and after comparison is passed, the examination paper separation and storage module is started to perform examination paper receiving and sending operation. The examination auxiliary all-in-one machine is provided with three modules of the movement module, the identification module and the separation module, and can realize automatic roll receiving and sending operation.

The invention discloses a 3D printing device for powder material light-curing bonding and a printing method, and belongs to the field of 3D printing. The device comprises a forming cavity and a lightsource system, wherein a light-sensitive liquid tank is arranged on the bottom of the forming cavity; a powder spray head is arranged inside the forming cavity; a base is arranged in the light-sensitive liquid tank; a base plate is placed on the base; a lifting device is connected on the base; the powder spray head is connected with a powder tank; the position of the powder spray head is controlled through the motor; and the light source system is used for irradiating light to a to-be-formed area. The 3D printing device overcomes the defects that conventional powder sinter moulding cannot manufacture a complex structure part, three-dimensional light-curing forming only can print single light-sensitive material part, and selective laser smelting 3D printing enables materials to be re-crystallized to easily generate inner defects, and the like. The 3D printing device has the advantages of being high in printing speed, high in forming efficiency, and capable of printing a complex model, can add different powder materials according to different purposes, expands the applied range of the powder material, and saves printing raw materials.

The invention aims at providing a multifunctional mechanical-arm and wheel cooperated traction mobile robot. The multifunctional mechanical-arm and wheel cooperated traction mobile robot comprises rocker arms, wheels and mechanical arms. The wheels are installed on the rocker arms. Each mechanical arm comprises a base, a back arm body, a middle arm body, a front arm body and a mechanical arm claw, wherein the base, the back arm body, the middle arm body, the front arm body and the mechanical arm claw are sequentially connected, the base is fixedly connected with the center of the corresponding rocker arm, three joints are formed by the base, the back arm body, the middle arm body and the front arm body, and a driving motor is installed at each joint. A steering engine is installed on each mechanical arm claw, and each mechanical arm claw is driven by the corresponding steering engine to achieve unfolding-folding motion. The two mechanical arms are installed on the two sides of a mobile robot body respectively. The multifunctional mechanical-arm and wheel cooperated traction mobile robot is suitable for various bumpy terrains and can be assisted to pass through various ground conditions such as protruding barriers, vertical barriers, ditches and pits; meanwhile, it is guaranteed that in the passing process, a vehicle body of the robot is stable, posture changes are small, and changes in the speed of the vehicle body are even.

The invention relates to an adjustable damping shock absorber. The shock absorber can be suitable for various vehicle suspensions or seats by manually adjusting damping. The adjustable damping shock absorber comprises a hoisting ring, a work cylinder, an oil storage cylinder, a middle cylinder, a guide base, an oil seal, a piston rod, a bottom valve assembly and a piston assembly. The adjustable damping shock absorber is characterized by further comprising a valve body, a valve element and a rotary arm, the valve body is assembled on the oil storage cylinder, the valve element and the rotary arm are assembled together, and the rotating action of the rotary arm is controlled by a driver. The shock absorber is simple and reliable in structure and low in cost, the damping force of the shock absorber can be easily adjusted according to the requirements of the driver, and therefore the vehicle comfort is improved.

The invention relates to a design method of a track and the track. The design method of the track comprises the following steps of S1, building a coordinate system; S2, constructing a coordinate system model of a track car, and constructing a known model of a first track edge or a second track edge in the coordinate system; S3, conducting conversion according to the moving path of a first walkingsystem on the track car along the first track edge in the coordinate system to obtain a coordinate system model of the second track edge, or conducting conversion according to the moving path of a second walking system on the track car along the second track edge in the coordinate system to obtain a coordinate system model of the first track edge. By means of the design method, through innovativegeometric curved surface design, pulleys of the track car on a track can be always in close contact with track slide rails, it can be guaranteed that embedding of a pulley group and the track is maintained stable and consistent all the time whether the track car runs on a straight track or a bent track; the demand of the track car for steering wheels is omitted, and the mechanical structure designof the track car can be simplified.

The invention discloses a 2D multifunctional two-way valve which comprises a 2D valve. A pressure-torsion coupling is arranged on one side of the 2D valve. A proportional electromagnet is arranged onthe side, away from the 2D valve, of the pressure-torsion coupling. The mechanical structure design is simplified, a mechanical structure needed for achieving different functions of an overflow valve,a pressure reduction valve, a flow valve and the like is achieved, and the advantage that the device application range is wide is brought; a valve element and a valve body of the 2D valve are directly assembled (without a valve sleeve), the structure is simple, machining difficulty is greatly reduced, and cost is reduced; through the design of a spherical rolling wheel on a rolling wheel obliquegroove in the pressure-torsion coupling, mechanism friction in the pressure-torsion coupling is reduced, and jamming of a pressure-torsion assembly can be avoided; and the 2D multifunctional two-way valve has the advantages of being small in size, wide in application range and the like.

The invention discloses an unmanned aerial vehicle roof air-drop indicating system mounted on the roof of a city building, belongs to the field of unmanned aerial vehicle freight reception, and aims to achieve the purpose of delivering and receiving cargo, which is suitable for being delivered by a fixed wing unmanned aerial vehicle, at any time. The system mainly comprises a device body, a high elastic rubber net, polyester sponge, a fixed telescopic rod, longitudinal support rods, inclined support rods, and lateral support rods; and the device body consists of a bottom surface, a front panel, a rear panel, and a side panel. The unmanned aerial vehicle roof air-drop indicating system mounted on the roof of the city building has the beneficial effects that no hazardous substance is produced in a reception process, the environmental suitability is good, and fixed point delivery can be realized.

The invention discloses a wind power variable pitch drive system, and particularly relates to an electric direct-driven wind power variable pitch drive system which is high in reliability, low in cost, high in efficiency and little in occupied space. The system comprises a hub, a variable pitch bearing outer ring and a variable pitch bearing inner ring, wherein the variable pitch bearing outer ring is arranged on the hub, and the variable pitch bearing inner ring is matched with the variable pitch bearing outer ring in a rotating mode. The system further comprises a linear drive mechanism which is rotatably installed on the circumferential edge of the variable pitch bearing inner ring, and one end of the linear drive mechanism is provided with a joint bearing which is hinged to the hub. Linear motions provided by the linear drive mechanism are directly transferred into rotation of the variable pitch bearing inner ring, a complex transmission structure is avoided, and accordingly the occupied space of the whole mechanism is substantially reduced, the whole mechanism is completely in the hub, holes do not need to be formed in the hub, rigidity of the hub is improved, and the system has the advantages of being low in weight, simple in structure, high in reliability, long in service life and the like.

The invention discloses a vehicle-mounted traffic light pre-judging device and an implementation method thereof. The vehicle-mounted traffic light pre-judging device includes a device body; the devicebody has a mobile phone holder and a forecast box; the mobile phone holder has a mobile phone clamp, and a sponge pad is arranged on the inner side of the mobile phone clamp; a tightness adjusting value is mounted on the bottom of the mobile phone clamp; the left side of the forecast box is fixedly connected to the bottom of the mobile phone holder; a controller is fixedly arranged inside the forecast box; and a liquid crystal display and a voice broadcaster are arranged on an upper surface of the forecast box. In the practical application, the device is simple and stable in structure, is small in size, and is flat; the mobile phone holder is stable and firm, and the accurate timing and intelligent pre-judgment of the front traffic light can be fully realized; the device has the time andspeed matching function and a voice broadcast function, and is suitable for promotion and application.

The invention discloses an assembled indoor GIS transportation and installation device and its use method, comprising a bearing mechanism for hoisting GIS equipment, a lifting mechanism for supporting the bearing mechanism, a walking trolley for driving the lifting mechanism to run, and The walking trolley is used in conjunction with the walking mechanism. The two ends of the supporting mechanism are fixed on the walking trolley through the lifting mechanism to form a portal frame, and the walking trolley is installed on the walking mechanism. In the present invention, the walking mechanism, the walking trolley, the hoisting mechanism and the carrying mechanism are all modularized, which not only can realize the rapid installation and maintenance of GIS equipment, but also can perform adaptive adjustments according to different GIS installation and use environments, and can be used multiple times Recyclable, with strong versatility; In addition, the telescopic arm technology is applied to the lifting mechanism, and the arm pin and the cylinder pin are innovatively arranged symmetrically at the same time for the lifting mechanism, which greatly improves the performance of the telescopic arm. The stress situation greatly improves the stability of GIS equipment during transportation.

The invention discloses a U-rib double-side automatic polishing and derusting system which comprises a bottom machining base provided with a containing area and a derusting machining area, the containing area is divided into a feeding area and a discharging area, and the containing area of the bottom machining base is provided with a movable rack and a fixed rack; the movable rack and the fixed rack are each provided with a bottom rack base, a feeding stand column, a discharging stand column and a top cross beam frame, and the top cross beam frames are fixedly installed on the tops of the feeding stand columns and the tops of the discharging stand columns. A feeding placing seat corresponding to the feeding area and a discharging placing seat corresponding to the discharging area are further fixedly mounted on the bottom rack seat; the device further comprises a feeding mechanism, a discharging mechanism, a sand blasting and rust removing mechanism, a heavy hammer swing type carrier roller and a transferring and clamping mechanism. The device is high in automation degree, can automatically complete the whole process of feeding, sand blasting and rust removing operation and discharging of a single U-shaped rib, basically does not need manual intervention, well reduces the labor cost, improves the production efficiency, and is small in space occupation of the whole system equipment.

The invention discloses a multi-point safety grounding device for general high-voltage switch equipment. The multi-point safety grounding device comprises a grounding guide rod, a guide rod, a rack and a mounting plate, wherein the grounding guide rod, the guide rod and the rack are welded to form a movable support, an insulating base and a positioning pin are fixed to the mounting plate, the guide rod is inserted into a guide hole of the insulating base, the positioning pin is inserted into a long hole of the rack, and the rack is meshed with a meshing gear; and a multi-point grounding electrode is fixed on the movable support, and a multi-point grounding terminal corresponding to the position of the multi-point grounding electrode is fixed on the insulating base. When a high-voltage circuit breaker is in an opening position, the multi-point grounding electrode is completely contacted with the multi-point grounding terminal, and a fixing bolt is screwed into the grounding guide rod tofix the movable support, thereby realizing safe grounding. The structure is small, the installation is convenient, and the space in equipment can be greatly saved; multi-point grounding enables grounding to be more sufficient; the bolt is used for fixing after grounding, so that the grounding is safer and more reliable; and the mechanical structure is simple in design, the number of parts is small, the back-and-forth movement is accurate, and the failure rate is low.

The invention discloses a bufferable roof dropped cargo receiving method and belongs to the field of unmanned aerial vehicle cargo transport. The bufferable roof dropped cargo receiving method aims atachieving the effect of being independent of control of operators and can achieve automatic receiving of unmanned aerial vehicle cargo. At the moment of several minutes before a fixed wing unmanned aerial vehicle arrives at a receiving device, LED lamps at the four corners of the receiving device are on; and an extending-and-contracting plate at a cargo picking area at the tail of the device slides into the tail of a sliding speed reduction area, and a highly-elastic rubber net in the cargo picking area is opened. The unmanned aerial vehicle is adjusted from high-altitude flight to horizontalflight away from the receiving device by a certain vertical distance height; and the bufferable roof dropped cargo receiving method achieves the effect that the dropped cargo can be received at the low altitude in a roof area capable of containing the device.

The invention belongs to the technical field of air filter testing equipment, and discloses a detachable air filter performance testing platform which comprises a supporting plate, a movable support, a Y-shaped pipe, a connecting pipe, a variable cross-section transition pipe, a first absolute filter, a flow meter, a second absolute filter and an operation platform assembly; the first absolute filter and the second absolute filter are arranged on the two ends of the operation platform assembly. Compared with a traditional testing platform, the testing platform has the advantages that the overall structure is formed by connecting rectangular box bodies in series, and the box bodies can be flexibly disassembled, so that the testing platform is convenient to maintain; the test equipment cost in testing of air filter performance through graded particle size counting method is reduced greatly; the testing platform is simple in structure design, a differential pressure sensor, an air flow meter and a sampling pipe are reasonably arranged, the graded particle size counting method is realized with good economical efficiency, and the test environment safety in the test process is ensured.