523 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.

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 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 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.

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 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.

The utility model relates to a crusher sealing gasket and a cover plate, which effectively solve the problems that pores on a cover plate in a traditional crusher are easy to block and the like. Comprising a supporting frame arranged on the horizontal plane, a base is rotationally connected to the supporting frame, a smashing cylinder is coaxially fixed to the base, a pneumatic motor is fixed in the base, a rotating shaft penetrating through the smashing cylinder is rotationally connected in the smashing cylinder, multiple sets of smashing blades are coaxially fixed to the rotating shaft, and the multiple sets of smashing blades are located in the smashing cylinder; the device is ingenious in structure and convenient to use, through the arrangement of the bottom plate, the connecting cylinder, the pressing plate and the like, coal briquettes with large particle sizes cannot get close to the middle of the bottom plate in the crushing process, small particles can stay in the buffering cavity, only gas penetrates through the through groove and the thin holes in the cover plate to enter the collecting pipe and finally enters a gas detector to be detected, and the detection efficiency is improved. Compared with an existing small pulverizer, the problem that filter holes of the cover plate are blocked is reduced or even completely eradicated in the mode, and the detection efficiency is greatly improved.

The utility model discloses a cattle driving device and a pneumatic system thereof. The pneumatic system of the cow driving device comprises an air source assembly, an air control assembly, a reversing valve, a three-way air control valve, at least one air cylinder and a pneumatic motor. A first air outlet of the reversing valve is communicated with a forward rotation port of the pneumatic motor; a second air outlet of the reversing valve is communicated with a reversing port of the pneumatic motor; an air outlet of the three-way pneumatic control valve is communicated with a working port of each air cylinder; the pneumatic motor can be in transmission connection with a frame of the cattle driving device; each cylinder can be in transmission connection with an overhead door of the cattle driving device; and the pneumatic control assembly can control the actuating mechanism of the reversing valve and the actuating mechanism of the three-way pneumatic control valve to act so as to open or close the first passage or the second passage of the reversing valve and open or close the first passage or the second passage of the three-way reversing valve. According to the pneumatic system of the cattle driving device, pure pneumatic control of the cattle driving device is achieved, and the cattle herd safety problem caused by power failure, electric leakage and the like can be effectively avoided.

A surgical robot positionable inside a magnetic resonance imaging system configured to capture patient-specific anatomy images. The surgical robot includes an outer arc structure with a first semi-arc shape having a first slide carriage, an inner arc structure with a second semi-arc shape having a second slide carriage, a needle assembly guide attached to the first slide carriage and the second slide carriage, the needle assembly driver capable of holding, advancing, withdrawing, and rotating the needle assembly, an imaging coil with a third semi-arc shape positioned below the needle assembly guide, and one or more pneumatic motors coupled to the outer arc structure and the inner arc structure and configured to respectively impart movement to the first semi-arc shape, the second semi-arch shape, the first slide carriage, the second slide carriage, and the needle assembly driver.

The utility model discloses a black-start pump skid for a marine generator set, and relates to the technical field of auxiliary starting of generator sets. A pneumatic pipeline is arranged on one side of the top end of the base and comprises an electromagnetic valve, a pump unit is arranged at the top end of the base and comprises a pneumatic motor and a pump body, the electromagnetic valve is connected with the pneumatic motor, and a medium conveying pipeline is arranged on the side, away from the pneumatic pipeline, of the top end of the base. And the pneumatic motor is used for driving the pump body to convey a medium in the medium conveying pipeline. Air in the air bottle of the ship body is processed through the pneumatic pipeline and connected with the pneumatic motor, pressure energy of compressed air is converted into mechanical energy through the pneumatic motor, the mechanical energy is supplied to the pump body connected with the pneumatic motor, and the pump body obtains power to drive media in the medium conveying pipeline connected with the pump body. Therefore, the purpose of stably conveying power fuel oil to the generator is achieved.

The utility model discloses a melt extrusion product pneumatic full-fitting change polishing device which comprises polishing equipment, the bottom of the polishing equipment is installed on the surface of a transmission gear, a limiting track is arranged on the inner side of the transmission gear, and meanwhile the bottom of the limiting track is fixedly arranged on the surface of a product polishing table. A pneumatic motor is fixedly connected to the bottom of the product grinding table in a threaded mode, an output shaft of the pneumatic motor is fixedly connected with a driving gear, and the driving gear is movably installed in a containing hole formed in the surface of the product grinding table. According to the pneumatic full-lamination variable polishing device for the melt extrusion product, polishing equipment rotates, and 360-degree polishing work is conducted on a spherical product through a full-lamination polishing base; the full-fitting polishing seat is matched with the spherical injection molding part in appearance and can be well fitted with the surface of a product; and when circular motion grinding is carried out, it can be guaranteed that the grinding strength and angle of all points on the surface of a product are relatively uniform, and therefore high-precision grinding is achieved.

This invention relates to the field of nuclear power plant maintenance equipment, and more particularly to a pneumatic wrench for rotating the main nut in a pressurized water reactor nuclear power plant. The pneumatic wrench includes: a guide rod connected to the lower end of a first sleeve; a second sleeve mounted on the outer surface of the guide rod's side end, with a third sleeve connected to its lower end; a fixing plate connected to the outer surface of the second sleeve's side end, with a small gear and a transition gear mounted on the upper part of the fixing plate, a pneumatic motor connected to the upper end of the small gear, a large gear ring on one side of the transition gear, a sleeve connected to the lower end of the large gear ring, a bearing installed at the connection between the sleeve and the second sleeve, an inner liner inside the sleeve, a limit block connected to the side end of the inner liner, a groove formed at the connection between the limit block and the large gear ring, a main nut inside the limit block, a main bolt inside the main nut, and a connecting seat connected to the upper end of the main bolt; a connecting plate connected to the outer surface of the first sleeve's side end, with pins installed on the connecting seat and the connecting plate. This invention can disassemble and assemble various types of nuts, and has a wide range of applications.

The invention discloses a mine automatic dumping car guard efficient desilting device and a using method thereof. The mine automatic dumping car guard efficient desilting device comprises a guard car body head, and the guard car body head comprises a pneumatic motor, a generator and auxiliary equipment; the pneumatic motor is installed at the bottom of the guard body head and is suitable for outputting to drive the generator to operate, the output end of the generator is suitable for being connected with a commutator, filtering equipment and a power supply assembly, and the generator is suitable for storing electricity into the power supply assembly; a control console is mounted in the head of the guarding vehicle body and is used for controlling opening and closing of the auxiliary equipment; a climbing frame is installed on the side face of the guarding vehicle body head, the climbing frame is in a bent shape and comprises a pedal face, and a mud removing piece is installed on the pedal face and suitable for being installed on the pedal face in a rotating mode. According to the design, the convenience and high efficiency of mud removal operation are greatly improved, the difficulty of manual cleaning is reduced, the cleaning efficiency is greatly improved, the cleaning state of the climbing frame is effectively guaranteed, and good conditions are created for stable operation and safe use of the climbing frame.