748 results about "Pneumatic motor" patented technology

The utility model discloses assembly welding equipment for a flange connecting pipe of a pressure vessel, which belongs to the technical field of pressure vessel manufacturing equipment and comprises a first workpiece clamping component fixedly arranged on a lathe bed and a second workpiece clamping component arranged on the lathe bed through a moving component, and the second workpiece clamping component can be close to or far away from the first workpiece clamping component. The first workpiece clamping assembly and the second workpiece clamping assembly each comprise a chuck fixing base, and a rotating chuck is installed on one side of each chuck fixing base. Three clamping jaws are arranged on the rotary chuck; the clamping jaws can move in the radial direction of the rotary chuck. The clamping jaw is driven by a first pneumatic motor; the rotary chucks are driven by a second pneumatic motor to rotate, and the center lines of the two rotary chucks are coaxial; the device further comprises a welding mechanism and a ground wire contact block. The welding mechanism is arranged corresponding to a welded junction of the flange and the connecting pipe. The ground wire contact block is arranged on a chuck fixing seat of the first workpiece clamping assembly; according to the utility model, the assembly precision can be improved, the clamping time can be shortened, and the processing efficiency can be improved.

The invention provides a pneumatic grinding end effector with a spindle vibration isolation function and a control method, the pneumatic grinding end effector comprises a supporting assembly, the supporting assembly comprises an upper bottom plate and a lower bottom plate, a connecting flange is mounted on the upper bottom plate, and the connecting flange is used for being connected with a robot; the propelling assembly is connected with the upper bottom plate and the lower bottom plate, and the propelling assembly is used for adjusting the distance between the upper bottom plate and the lower bottom plate; the grinding assembly comprises a pneumatic motor and a grinding tool, and the pneumatic motor is installed on the lower bottom plate and used for driving the grinding tool; and the vibration isolation assembly comprises a vibration isolation frame and a plurality of photonic crystal unit cells installed on the vibration isolation frame, the vibration isolation frame is connected with an output shaft of the pneumatic motor and the grinding tool, and the multiple photonic crystal unit cells are arranged around the peripheral side of the vibration isolation frame. According to the pneumatic grinding end effector, the influence of vibration of the main shaft on the grinding quality in the grinding process of the end effector is effectively solved.

The present invention belongs to the technical field of ventilation regulation in underground mines, and particularly relates to an intelligent pneumatic air window precise regulation device and method for underground mines. The regulation device includes a pneumatic air window, a controller, and an air volume sensor. The pneumatic air window is installed at the ventilation opening of the underground roadway wall in the mine and is driven by a pneumatic motor. Two air ports of the pneumatic motor are respectively externally connected to compressed air through an air pipe one and an air pipe two. The air volume sensor is installed in the underground roadway in the mine and faces the pneumatic air window. Compared with the prior art, (1) the use of the present invention can avoid repeated regulation of the pneumatic air window in underground mines; (2) the regulation method of the pneumatic air window in underground mines of the present invention adopts the method of gradually reducing the single regulation amount in proportion, making the regulation efficiency higher; (3) the intelligent pneumatic air window precise regulation device and method for underground mines of the present invention have strong applicability and can meet the regulation requirements of pneumatic air windows with different structures and different properties.

The invention relates to the technical field of aquatic fish refrigeration, in particular to a refrigeration device and method for aquaculture. The refrigeration device comprises a refrigeration cabinet, a base and a plurality of pneumatic machines, shaking frames corresponding to the pneumatic machines are arranged in the refrigeration cabinet, and filtering sleeve plates are movably arranged in the multiple shaking frames; the refrigeration device comprises a plurality of pneumatic machines, a plurality of shaking frames are arranged in the multiple shaking frames, filtering sliding plates are movably arranged in the multiple filtering sleeve plates, shaking draining mechanisms are arranged between the multiple pneumatic machines and the corresponding shaking frames, and self-cleaning mechanisms connected with the refrigeration cabinet are arranged at the bottoms of the multiple shaking frames. The shaking frame, the filtering sleeve plate and the filtering sliding plate in the refrigerated cabinet can be driven to shake synchronously, so that accumulated fish is dispersed during shaking and drained through holes of the filtering sleeve plate and the filtering sliding plate, the problem that water drops and blood are accumulated on the surfaces of the fish and the bottom of the refrigerated cabinet is solved, and the surfaces of the fish are kept relatively dry; therefore, the stability of the refrigeration effect is improved.

The invention discloses grinding and polishing equipment for the inner wall of a pipe workpiece. The grinding and polishing equipment comprises a rack, a workpiece rotating and supporting mechanism, a grinding mechanism, a radial feeding mechanism, an axial moving mechanism, a workpiece stabilizing mechanism and an electric control system. The grinding assembly is a flexible grinding wheel formed by splicing a plurality of arc-shaped grinding pieces, a pneumatic motor drives the flexible grinding wheel to rotate at a high speed to serve as main cutting motion, constant-pressure contact control is achieved through a radial feeding mechanism, abrasion of the grinding wheel can be compensated in a self-adaptive mode through the control mode, and it is guaranteed that the grinding pressure is stable; therefore, the reference size of the workpiece is protected to the maximum extent while the defects of the inner wall are effectively removed, the problem of size out-of-tolerance caused by uneven pressure or abrasion in traditional rigid grinding is avoided, constant-pressure, efficient and high-quality grinding is guaranteed, and the grinding and polishing efficiency and quality of the inner wall of the pipe workpiece are effectively improved.

The invention relates to the technical field of pulp shooting machines, and discloses a self-adaptive pulp shooting machine for vertical shaft inner wall unevenness, and the self-adaptive pulp shooting machine for vertical shaft inner wall unevenness integrates advanced equipment which integrates efficient pulp shooting, self-adaptive adjustment and automatic control. The pipeline conveying mechanism is responsible for accurately conveying high-pressure slurry to the rotary material spraying mechanism, and the rotary material spraying mechanism uniformly sprays the slurry to the inner wall of a vertical shaft in a mist form through high-speed rotation. The position of the self-adaptive lifting structure can be automatically adjusted according to the unevenness of the inner wall of the vertical shaft, it is ensured that the slurry covers all details, and even slurry spraying can be achieved whether grooves or protrusions exist. In addition, the guniting machine is driven by a pneumatic motor, not only adapts to the complex underground environment, but also is high in response speed and can quickly adapt to the change of the inner wall of the vertical shaft. The overall design pays attention to efficiency, stability and durability, manual intervention is reduced through automatic operation, the construction quality and efficiency are improved, and meanwhile material waste and cost are reduced.

The invention discloses an impact resistance test device for a marine diesel engine. The impact resistance test device comprises an impact resistance test bed, the upper end of the shock resistance test bench is connected with the test base; a plurality of vibration isolators are mounted on the test base, and anti-impact machine legs, fixedly connected with the bottom of a diesel engine, at the upper ends of the vibration isolators are connected with an impact hammer and are arranged on the outer side of the impact test bed for impacting the impact test bed; the data acquisition instrument is in circuit connection with the upper computer; and the data acquisition instrument is in circuit connection with an ECU (Electronic Control Unit) of the diesel engine, the external fuel pump and the pneumatic motor. The impact force borne by the diesel engine in the operation state when a ship is subjected to explosion impact is simulated on the land, and the working performance of the diesel engine can be detected when the diesel engine is subjected to impact resistance. And accessory equipment connected with the diesel engine is not arranged on the test bed and is flexibly connected with the diesel engine, so that the reliability is high, the device can be repeatedly used, and the test cost is reduced.

To provide an air tool that can cool a wide area using an exhaust gas.SOLUTION: An air tool includes: an air motor 2; a tip tool 3 rotated by the air motor 2; an exhaust hole 5c for discharging an exhaust gas of the air motor 2 into the outside air; and a guide 6 for guiding the discharged exhaust gas to the tip tool 3. The guide 6 includes: an intake port 6a for taking an exhaust gas into the guide 6; a discharge port 6b for causing the exhaust gas to abut on the tip tool 3; and a lateral opening 6c communicated to the outside air.SELECTED DRAWING: Figure 2

The invention provides a one-stop rapid and accurate measuring device for coal seam gas content, and belongs to the technical field of coal mine safety. The device comprises a portable granular coal desorption and efficient crushing integrated device and a gas desorption amount automatic measuring device. The automatic gas desorption amount measuring device adopts a drainage volumetric method to automatically measure the desorption amount, so that manual reading errors are avoided; according to the granular coal desorption and efficient crushing integrated device, compressed air expansion, heat absorption and cooling are achieved through the double-layer light coal sample tank and the gas channel, the heat influence in the crushing process is reduced, and the measurement precision is ensured. According to the invention, the double-layer structure of the desorption measuring cylinder avoids bubble interference, the liquid level, temperature and air pressure integrated sensor realizes automatic measurement of environmental parameters, and the accuracy of desorption amount measurement is improved. And the crushing device adopts a high-speed gear type pneumatic motor and adapts to underground high-temperature, high-humidity and dust environments, so that the reliability of the device is remarkably improved. According to the invention, the underground one-stop rapid measurement of the coal seam gas content is realized, the data is stable and accurate, and reliable basic data is provided for coal mine gas treatment, coal seam gas resource utilization and methane emission metering.

The present invention discloses a rigid-flexible pneumatic component hybrid-driven robot joint system, belonging to the technical field of robots. The robot has the function of whole-body joint movement: three cylinders are connected in parallel to drive the movement of the waist joint. Multiple cylinders of the waist joint and the pneumatic muscles of the pelvis together drive the movement of the hip joint; the pneumatic motor and the pneumatic muscles in the form of antagonist muscles together drive the movement of the knee joint; four pneumatic muscles are connected in parallel to drive the movement of the ankle joint, and another two pneumatic muscles are connected to the lower end of the foot through the rear connecting shaft guide and drive the ankle joint together with the four pneumatic muscles of the ankle joint. A group of antagonist muscles in the wrist joint-elbow joint and the shoulder joint-elbow joint respectively drive the rotation of the elbow joint, and the pneumatic muscles in the form of two groups of antagonist muscles in the wrist joint-elbow joint and the wrist joint drive the movement of the wrist joint, and the pneumatic gripper has the function of clamping items. The present invention drives the joints by combining pneumatic components with mechanism, and has the characteristics of compact structure, strong adaptability and flexible working mode.

A pipe cleaning apparatus can be used to clean and service an interior surface of a pipe. The apparatus has cleaning nozzle that spray the interior surface of the pipe as they rotate around a central axis. Drive wheels allow the apparatus to traverse the pipe in a longitudinal direction. Further, guide wheels keep the apparatus positioned within the pipe. Adjustable mechanisms allow the wheels to adapt to different size pipes. A drive shaft, air motor, and worm gears coordinate the movement of the apparatus to the speed of the cleaning nozzles, which varies depending on the diameter of the pipe.

An air motor apparatus for air drilling includes a filter assembly at an uphole end that receives compressed air and diverts a constant pressure portion through a filter to a vane motor and a remaining portion to an air hammer at a downhole end via bypass conduits. The apparatus includes one or more sensors for measuring drilling conditions, the sensors being connected to a communication device capable of transmitting the sensor data to the surface. The sensors and their wiring are shielded from high air speeds by bypass conduits and components of the filter assembly.

An air motor apparatus for air drilling includes a filter assembly at an uphole end that receives compressed air and diverts a constant pressure portion through a filter to a vane motor and a remaining portion to an air hammer at a downhole end via bypass conduits. The apparatus includes one or more sensors for measuring drilling conditions, the sensors being connected to a communication device capable of transmitting the sensor data to the surface. The sensors and their wiring are shielded from high air speeds by bypass conduits and components of the filter assembly.

The invention discloses a pneumatic directional drilling device and method for a horizontal section of a horizontal well passing through a goaf, and belongs to the technical field of drilling equipment. The invention aims to provide a high-efficiency zero-pollution directional drilling device and method for a horizontal section of a horizontal well penetrating through a goaf. According to the technical scheme, the device comprises a drill bit, a pneumatic screw rod, a non-magnetic drill collar, a wireless while-drilling instrument, a heavy weight drill rod, a matched long connector and a drill rod, the drill bit is connected with one end of the pneumatic screw rod through threads, the other end of the pneumatic screw rod is connected with one end of the non-magnetic drill collar through a first directional connector after being provided with a one-way valve, and the wireless while-drilling instrument is installed in the non-magnetic drill collar. The other end of the non-magnetic drill collar is connected with one end of the heavy weight drill pipe through a second directional connector, and the other end of the heavy weight drill pipe is connected with the drill pipe through a matched length connector. The pneumatic screw comprises a transmission shaft assembly, a universal shaft assembly, a pneumatic motor assembly, an anti-falling assembly and a bypass valve assembly which are sequentially connected together. The device is used for drilling the horizontal section of the horizontal well in the goaf.

The utility model discloses a bag shaking mechanism of a fluidized drying granulator, which relates to the technical field of fluidized drying granulators and comprises a shell, a partition plate is fixedly connected inside the shell, air vents are equidistantly arranged on the partition plate in a surrounding manner, and the bag shaking mechanism further comprises a support plate frame and a support mechanism. In the process of cleaning the filter bag, the first pneumatic motor drives all the first transmission shafts on the upper plate to synchronously rotate, the first transmission shafts drive the sleeves to rotate, the sleeves drive the spiral strips to rotate, and meanwhile, the upper plate moves downwards to drive the first transmission shafts, the sleeves and the spiral strips to move downwards along the interior of the filter bag; the spiral strip continuously pushes the filter bag to shake left and right, so that material cakes in the filter bag can be broken and fall off conveniently, meanwhile, residual particles in the filter bag are scraped, and when the sleeve and the spiral strip move downwards to the bottom of the filter bag, the electric telescopic rod extends to drive the upper plate to drive the sleeve and the spiral strip to move upwards to reset, so that the cleaning operation is completed.

The utility model relates to the technical field of hand riveters, in particular to a displacement detection device for a nut and screw riveting machine. Comprising a support, a pneumatic motor is fixed to the support and connected with a rivet pulling lifting pressure cylinder, a piston is arranged in the rivet pulling lifting pressure cylinder, a rivet pulling gun head is fixed to the end face of the rivet pulling lifting pressure cylinder, and the piston is fixedly connected with a rivet pulling gun screw in an inner cavity of the rivet pulling gun head. A long-strip-shaped opening is formed in the cavity wall of the rear end of a piston of the rivet pulling lifting pressure cylinder, a displacement lifting rod is fixed to the piston in the radial direction and extends out of a cylinder body from the long-strip-shaped opening, a displacement sensor fixing frame is fixed to the outer side of the cylinder body of the rivet pulling lifting pressure cylinder, and a displacement sensor is fixed to the displacement sensor fixing frame. And an oil inlet is formed in the front end of the riveting lifting pressure cylinder. When high-pressure oil enters the cylinder body from the oil inlet of the rivet-pulling lifting pressure cylinder, the piston moves backwards, the screw of the rivet-pulling gun is pulled to enable the rivet-pulling nut to deform, and the deformation amount is recorded by the displacement sensor. The motor can rotate positively and negatively.

An efficient pump, a motor set, a suction and discharge set, an output set and a smashing cutter are assembled in a pipe, the specification of the suction and discharge set adapts to scenes required by life and production, fluid enters the pipe from a lower inlet, a gas-liquid-electric motor is installed in the pipe, the smashing cutter is installed on a motor shaft, the smashing cutter is installed on the motor shaft, and the pipe is provided with a gas-liquid-electric motor connector in a matched mode. A middle hole of a fluid connector is communicated with a variable-diameter small flow channel, a feeding cylinder is provided with a hole, the wheel shaft is provided with the wheel blades, fluid enters from a lower inlet and flows upwards to an upper outlet to flow out of the variable-diameter small flow channel, and a gas-liquid electric motor is a pneumatic motor, a hydraulic motor and an electric motor for short. The specifications of the parts are set according to actual needs. The output of the sucked, discharged and conveyed fluid is extremely high, the size is from small to large, manufacturing and application can be set, durability, high yield and environmental protection are achieved, cost is reduced, benefit is increased, and innovative and good life, production and ecology are benefited.

The utility model discloses a numerical control machine tool milling head structure which comprises a shell and is characterized in that a window is formed in the side face of the shell, a sleeve is installed in the shell in a sleeved mode, a main air channel is formed in the sleeve, and a second air channel is formed in the position, close to the bottom, of the side face of the main air channel. A first pneumatic motor is arranged at the other end of the second air channel, a first cutter handle is arranged on one side of the first pneumatic motor, a first pressing cap is rotatably installed on one side of the first cutter handle, an air pipe is arranged at the top of the shell, an air pipe connector is arranged at the other end of the air pipe, and the other end of the air pipe connector is externally connected with an air source. According to the milling head structure of the numerical control machine tool, cutters of different specifications are installed on the two cutter handles, airflow enters the pneumatic motor through the air pipe along the main air channel, the motor rotates to drive the cutter handles to rotate to machine products, when the cutters need to be replaced, the main shaft moves to avoid workpieces and rotates by 180 degrees to complete cutter replacement, and the cutter head does not need to be dismounted after shutdown.

An eccentric rotary grinding device comprises a fixed shell, an eccentric wheel assembly, a supporting piece, a power motor and a connecting rod, a first mounting hole and a second mounting hole are formed in the upper end of the fixed shell, the supporting piece comprises an elastic rotary body, and an upper pin column and a lower pin column are arranged at the two shaft ends of the elastic rotary body respectively; the eccentric wheel assembly comprises an eccentric wheel seat and an eccentric shaft, a bearing groove is eccentrically arranged at the upper end of the eccentric wheel seat, and a chuck is arranged at the front end of the connecting rod. The supporting piece made of the elastic material serves as a movement fulcrum of the connecting rod for grinding, interference to movement of the eccentric wheel assembly at the rear end of the connecting rod is avoided, and grinding efficiency is improved. A chuck structure is arranged at the front end of the connecting rod for grinding, so that a file and oilstone can be conveniently mounted on a positioning plate; two driving modes of an electric motor and a pneumatic motor can be adopted, and the space occupation of the device is reduced by adopting the electric motor; and the handheld structure is perpendicular to the arrangement direction of the connecting rod for grinding, so that the operation difficulty of grinding the side wall of the mold cavity is reduced.

The utility model relates to the field of coal mine dust removal equipment, in particular to a pneumatic wet dust remover. The wet-type dust removal device comprises a dust removal cylinder with two open ends and a wet-type dust removal assembly located in the dust removal cylinder. The wet-type dust removal assembly is provided with a spray head and fan blades, the fan blades are driven to rotate to generate air flow by taking inlet and outlet air as power, and meanwhile, the air flow is linked with water drops sprayed by the spray head to wet and collect dust. The wet-type dust removal assembly is arranged, kinetic energy is provided through the pneumatic motor, and the fan blades are driven to rotate. The fan blades rotate to generate a negative pressure environment, and dust is sucked into the dust removal cylinder. And meanwhile, the underground water filtered by the filter is sprayed out after being atomized by the spray head to humidify the sucked dust. Through wind-water linkage, the contact volume of wind and water and coal dust is increased, and the dust falling efficiency is improved.

The present invention provides an intelligent gripping and wire clamp mounting device for a fully automatic drainage operation, and an operation method. The device comprises: a wire clamp body, used for fixing a drainage wire; a wire clamp fixing mechanism, used for fixing and positioning the wire clamp body; a wire clamp gripper, used for gripping the wire clamp body from the wire clamp fixing mechanism and connecting the wire clamp body to an electrified cable to complete a drainage operation; and an operation platform, connected to the wire clamp gripper and providing electrical power for the wire clamp gripper. According to the present invention, during use, the wire clamp fixing mechanism is mounted on a composite insulator of a cross arm of a 10 kV pole and tower, the design of the wire clamp fixing mechanism can safely fix a drainage wire clamp for a long time, and is suitable for a complex severe weather environment, and manual deployment and automatic robot gripping are facilitated. According to the wire clamp gripper of the present invention, a pneumatic motor serves as a driving force device for tightening a screw, and a pneumatic push rod serves as a power device of the wire clamp gripper. Mutual decoupling is achieved, electromagnetic interference is avoided, the electric insulativity is high, the cost is low, and technical popularization is easy. An operator is far away from an electrified cable, so that the electrical shock risk is reduced. The labor intensity is reduced, and the operation efficiency is improved.

The invention relates to the technical field of stackers, and discloses a quick-change pickup device for a stacker, which comprises a mounting base and a tail end clamp, the stacker for driving the tail end clamp to move is arranged at the top of the mounting base, and a quick-change mechanism is arranged on the stacker. The tail end clamp is detachably mounted on the stacking machine through a quick change mechanism; the quick-change mechanism comprises a quick-change upper cylinder body and a quick-change lower cylinder body which are matched with each other, and a driving gear and an adjusting worm wheel which are fixedly connected are arranged in the quick-change upper cylinder body. According to the quickly-replaced picking device for the stacker crane, air is supplied to a pneumatic motor to drive an adjusting worm and an adjusting worm gear to rotate, so that a plurality of connecting assemblies are driven to rotate through transmission of a driving gear, a connecting screw rod is screwed in or out along a connecting hole, and therefore disassembly and assembly of a quickly-replaced upper cylinder body and a quickly-replaced lower cylinder body are achieved; and therefore, the tail end clamp is quickly replaced, the operation is simple and convenient, and the replacement efficiency of the tail end clamp is improved.

A pneumatic lifting and rotating distributing device for a squat silo comprises a grain conveying pipe, a transfer granary and a lifting system. A telescopic grain channel formed by a plurality of layers of telescopic conical barrels is arranged below the transfer granary, the telescopic conical barrel on the bottommost layer is connected with a reducer pipe with a valve, a lower pipe opening of the reducer pipe is connected with an inner ring of a slewing bearing, and a rotary distributing cylinder is connected below an outer ring of the slewing bearing. The height of the lifting platform and the opening and closing of the valve in the reducer pipe are controlled through the hoisting equipment so as to ensure that grains are gradually scattered from the bottom of the silo upwards to enter the silo, the grain grading phenomenon is reduced, the pneumatic motor drives the material distribution groove to rotate, and uniform grain distribution in the same grain surface height is ensured. By controlling the opening and closing of the valve in the reducer pipe and the telescopic grain channel, the grain flows in a limited manner when entering the grain silo, and does not freely fall, so that the grain silo disclosed by the utility model is prevented from being automatically graded and crushed when entering the grain silo.

The utility model discloses an air compressor structure polishing device in the technical field of polishing devices, which comprises an air storage barrel, a pneumatic motor is mounted at the bottom of one end of the air storage barrel, a polishing disc is mounted at one end of the pneumatic motor, and a positioning clamping mechanism is mounted on the surface of the air storage barrel. The positioning and clamping mechanism comprises a positioning plate, a sleeving plate, an adjusting frame and a clamping block plate, and has the beneficial effects that the position of the output end of the pneumatic motor can be conveniently positioned through the positioning and clamping mechanism, so that the phenomenon that the used pneumatic motor still rotates for a period of time due to inertia is prevented, and the service life of the pneumatic motor is prolonged. According to the air compressor structure polishing device, the working risk of workers is reduced, the positions of air compressor structures of different sizes can be clamped, then the phenomenon that the air compressor structures move during polishing is prevented, and the effect of the air compressor structure polishing device when the air compressor structures are polished is ensured.

The utility model discloses a device for quickly measuring gas content, which comprises a crusher, a desorption unit and a host, the pulverizer comprises a support, a pulverizer material bowl installed in the support, a blade located in the pulverizer material bowl, a pneumatic motor located below the pulverizer material bowl and used for driving the blade to rotate, and a pressure regulating filter installed on the support and connected with the pneumatic motor. The desorption unit comprises a base, a measuring cylinder mounted on the base, and a water level monitoring sensor positioned in the measuring cylinder and used for measuring the displacement of a water level, and a vent valve communicated with a material bowl exhaust port of the crusher material bowl is arranged on the measuring cylinder; a data acquisition device and an ARM single-chip microcomputer which are connected with the water level monitoring sensor through cables are arranged in the host. The device can rapidly measure underground readings, and is convenient to carry, good in stability, high in measurement precision and high in automation degree.

An air motor apparatus for air drilling includes a filter assembly at an uphole end that receives compressed air and diverts a constant pressure portion through a filter to a vane motor and a remaining portion to an air hammer at a downhole end via bypass conduits. The apparatus includes one or more sensors for measuring drilling conditions, the sensors being connected to a communication device capable of transmitting the sensor data to the surface. The sensors and their wiring are shielded from high air speeds by bypass conduits and components of the filter assembly.

The invention relates to the technical field of polishing, in particular to an automatic hub polishing machine which comprises a machine table, a mechanical arm is installed on the table top of the machine table, a connecting frame is connected to the end of the mechanical arm, a bottom frame is connected to the lower portion of the connecting frame through a stand column, a pneumatic motor is installed on the bottom frame, and a transmission shaft of the pneumatic motor is connected with a driving shaft. The free end of the driving shaft faces downwards and is connected with a clamp, a center grinding head is clamped at the clamping end of the clamp, and a side grinding assembly, an unfolding assembly and a sliding assembly are arranged on the bottom frame. Through the arrangement of the side grinding assembly, when a large round hole or the side wall of a spoke is ground, a center grinding head can be replaced by a plurality of surrounding grinding heads, and the hole in a hub and the two side walls of the spoke can be ground only by achieving the autorotation and sliding functions of the mechanical arm; and the center grinding head is used for grinding the end part of the spoke and the small hole, so that the complete grinding of the hub can be completed.

The utility model relates to the technical field of stirrers, and discloses a paint pneumatic stirrer which comprises a stirring bin, a pneumatic motor, a driving assembly, stirring blades and a stirring assembly, the pneumatic motor is located at the bottom of the stirring bin, the driving assembly is located at the bottom of the stirring bin, and the stirring assembly is located in the stirring bin. The stirring blades are fixed to the top of the stirring assembly, an inner fixing groove is formed in the inner bottom face of the stirring bin, the stirring bin and a bottom fixing groove are formed in the bottom face of the stirring bin, the bottom fixing groove is located in the center of the inner ring of the stirring bin, and the driving assembly comprises a driving transverse rod; the front end and the rear end of the driving transverse rod are fixedly connected with driving electromagnets. According to the paint pneumatic stirrer, the principle of an electromagnet is adopted, so that the stirring assembly in the stirring bin does not need to be in direct contact with the driving assembly and can be driven by the driving assembly to rotate, and paint can be well prevented from polluting other external assemblies.

The utility model discloses an anti-explosion chopping machine which comprises a machine frame, a machine box, a rubber roller device, a cutter roller, a pneumatic motor, a product collecting hopper and an air amplifier. The lower end of the product collecting funnel is connected with an air amplifier through a bent pipe; the case comprises a case body and a case cover; the cutter roller is embedded in the box body, and the rubber roller device is arranged in an inner cavity of the box body in a sliding mode. The rubber roller device comprises a rubber roller and a rubber roller adjusting mechanism; a wire inlet is formed in the right side of the box cover; and a yarn guide device capable of doing reciprocating motion is arranged on the yarn inlet. The pneumatic motor is adopted to drive the cutter roller and the pneumatic air amplifier to convey finished products, the body is not provided with an electrical device, the chopping machine is a closed case except for a feeding port, chopped products enter a conveying pipeline along with airflow, and a negative pressure environment is formed in the case of the chopping machine. Flammable and explosive carbon fiber broken yarns with conductivity and dust are prevented from leaking to float in the air and invading electric appliances to cause safety accidents such as short circuit faults or dust explosion and the like.

The passenger car pneumatic motor system comprises an air compressor, an air storage tank and an air using module, the air compressor is connected with the air storage tank and the air using module through a distribution valve set and supplies air to the air storage tank and the air using module, a distribution valve is connected with a plurality of pneumatic motors, and the pneumatic motors are used for driving a vehicle-mounted execution module to work. A power source used for driving the executing mechanism to operate is replaced by the pneumatic motor from a common electric motor, the vehicle-mounted air supply unit is used for supplying air to the pneumatic motor, on one hand, compared with the electric motor, the pneumatic motor can achieve system control through a simple flow control valve, a complex electronic control system does not need to be arranged, and the cost is reduced. The structure is simpler, the subsequent maintenance cost is lower, the purchase cost is also reduced compared with that of an electric motor, the cost for operating the execution unit can be effectively reduced, and the requirement for light weight of the vehicle is better met; and on the other hand, the multiple executing mechanisms can share one gas supply unit, the utilization rate of the gas supply unit is increased, and the applicability is high.