31results about How to "Increase line speed" patented technology

The rotary ejection type unmanned aerial vehicle carrying vehicle comprises a vehicle body, and a shaft rod is fixed to the top of the vehicle body; the lifting plate is provided with a through hole, a sleeve is fixed above the lifting plate, and the shaft rod is in sliding fit with the through hole and the sleeve; the lifting plate is connected with the top of the vehicle body through springs; the inner ring of the upper ball bearing is fixed at the upper end of the shaft rod, and the inner ring of the lower ball bearing is fixed on the sleeve; each folding frame comprises a long rod and a short rod, a launcher and a fixing device capable of installing the unmanned aerial vehicle are fixed to the upper end of the long rod of one folding frame, a balancing weight is fixed to the upper end of the long rod of the other folding frame, and therefore the function that the carrying vehicle conducts rotary casting on the unmanned aerial vehicle is achieved.

The invention belongs to the technical field of glass fiber production equipment, and particularly relates to a simple and replaceable reversing end sleeve at the two ends of a spiral groove of a groove drum. The device comprises an end sleeve and a tube sleeve, the end sleeve comprises an outer end sleeve and an inner end sleeve. The end sleeves are assembled at the two ends of the groove drum, and the drum sleeve is assembled on the groove drum and close to the end sleeves. A large reversing groove and a small reversing groove are defined between the end sleeve and the barrel sleeve. The groove drum can be maintained by replacing the reversing end sleeve, the technical problem that the whole groove drum needs to be replaced once the groove section at the reversing position of an existing groove drum is damaged is solved, and the production cost is saved, the equipment maintenance difficulty is lowered, and the shutdown overhaul time is shortened.

The invention discloses an efficient low-carbon vertical tank supergravity mixed magnesium smelting device and method.The device comprises a furnace body and a supergravity solid-liquid mixing system, and the supergravity solid-liquid mixing system comprises a first-stage material gathering taper pipe fixedly arranged in the furnace body and a second-stage material gathering taper pipe provided with a discharging port; a liquid-solid mixing reaction material tank internally and fixedly connected with a solid raw material distributing plate is arranged above the first-stage material gathering taper pipe, the liquid-solid mixing reaction material tank is fixedly connected with a solid raw material feeding pipe provided with a solid raw material feeding vacuum valve, and the solid raw material feeding pipe is rotationally connected with the furnace body and connected with a transmission assembly. A liquid-state reducing agent atomizing disc is fixedly arranged in the liquid-solid mixing reaction material tank and is rotationally connected with a liquid-state reducing agent feeding pipe provided with a liquid-state reducing agent feeding vacuum valve; the furnace body is connected with the magnesium steam collecting system, the magnesium steam collecting system is connected with the vacuumizing system, and a slag outlet is formed in the bottom of the furnace body and connected with a sealing piece. According to the invention, the reaction efficiency is improved, the energy consumption is reduced, and energy conservation and emission reduction are realized.

The present invention discloses a stacked multi-stage threaded pumping sealing structure, wherein a sealing structure is installed between a cavity and a rotating shaft, wherein the sealing structure comprises a sealing shell composed of a high-pressure side shell and a low-pressure side shell, wherein an outer ring cavity and a plurality of threaded ring cavities are arranged in the sealing shell; a rotor is installed in the center of the sealing shell, an outer ring is arranged in the circumference of the rotor, and a plurality of threaded rings are arranged on both sides of the outer ring, and the rotor, the outer ring and the plurality of threaded rings rotate in corresponding threaded ring cavities; the invention can seal both liquid and gas, and although the invention is a non-contact seal, it has a better throttling effect and a smaller leakage, and even in the parking state with the weakest sealing ability, its sealing ability is still better than that of a conventional labyrinth seal, and this is due to the radial expandability of the stacked multi-stage structure itself, and the more stages there are, the stronger the blocking effect on the fluid.

The invention discloses a nanoscale high-speed sample slicing device and a nanoscale high-speed sample slicing method, and relates to the technical field of pathological research. The nanoscale high-speed sample slicing device is provided with a high-speed air static pressure main shaft and a mechanical feeding table which are respectively fixed on two layers of step surfaces of a base from left to right; the upper surface and the lower surface of the piezoelectric ceramic are fixedly connected with the bottom face of the tool rest and the mechanical feeding table respectively. A sample is fixed at the front end of the high-speed air static pressure spindle through a sample clamp; the slice collecting groove sleeves the knife rest, the slice transmission belt is fixedly mounted on the inner side face of the slice collecting groove, and the front end of the slice transmission belt is embedded in the knife rest. According to the slicing method, an equipment basis is provided for breaking through the thickness limit of the current biological slice, a guarantee is provided for the stability of the ultrathin slice of the biological sample, the biological slice sample can be efficiently and automatically collected, and the development of the pathological analysis field is assisted.

The present application relates to photovoltaic encapsulation adhesive film technical field, especially a kind of photovoltaic adhesive film production line suitable for high-speed production, including extruder, casting die, flow forming device, cooling setting device, online thickness measuring device, multilayer track cooling device, flaw detection device, slitting device and winding device being arranged in sequence, cooling setting device includes first cold roll, second cold roll, third cold roll cold roll, fourth cold roll and fifth cold roll, the first cold roll, second cold roll, third cold roll cold roll, fourth cold roll and fifth cold roll are rotatably arranged in bearing seat, one side of first cold roll, second cold roll, third cold roll cold roll, fourth cold roll and fifth cold roll is respectively provided with driving motor, the driving motor is connected with fourth bearing seat respectively.The present application can not only satisfy production under high line speed, but also effectively control the production size of photovoltaic adhesive film, quality is stable, improve film sticky condition, product flatness is good.

The utility model discloses a high-output-value tin powder preparation machine which comprises a machine body, a tin melting furnace, an intermediate converter, a conveying pipe, a driving mechanism and a rotating disc. The machine body is provided with an atomizing cavity and a collecting cavity; the tin melting furnace is arranged outside the machine body; the intermediate converter is arranged in the atomizing cavity and is communicated with the tin melting furnace through a pipeline; the conveying pipe is arranged in the atomizing cavity; the driving mechanism is arranged at the communicating part of the atomizing cavity and the collecting cavity; the rotating disc comprises a main body part and a ceramic layer, the main body part is rotatably arranged on the driving mechanism, and the ceramic layer is embedded in the surface of the main body part. The main body part is rotatably arranged on the driving mechanism and is driven by the driving mechanism to rotate, the ceramic layer is embedded in the surface of the main body part and rotates along with the rotation of the main body part, and the mass of the ceramic material is light, so that the mass of the turntable is greatly reduced, and the turntable can reach a higher rotating speed under the same power; and the linear speed when the tin liquid is in contact with the rotating disc is effectively increased, so that the prepared tin powder particles are smaller in particle size.

The utility model discloses a novel roll-to-roll electroless nickel gold roller device which comprises a plating tank, adjusting cylinders are fixedly mounted at the bottoms of two groups of brackets, a mounting plate is fixedly mounted at the telescopic ends of the adjusting cylinders, two groups of fixing plates are symmetrically and fixedly mounted at the bottom of the mounting plate, and the two groups of fixing plates are symmetrically and fixedly mounted at the bottom of the mounting plate. A plurality of groups of rollers are movably mounted between the two groups of fixing plates through bearings, and spiral grooves which are spirally formed are formed in the surfaces of the plurality of groups of rollers; through the design of the spiral groove structure arranged on the surface of the roller, the problems of coating damage, coating surface oxidation and the like are solved when a product is in contact with the roller in the conveying process of the roller, continuous nickel plating or gold plating in the production process is realized, the product quality and the line speed of a production line are improved, the production capacity of the production line is increased, and the production efficiency is improved. And meanwhile, the problems that in a roll-to-roll chemical nickel gold production mode, equipment is not flexible, and cleaning, maintenance and the like are difficult in the production process are solved.

The present invention belongs to the technical field of road cleaning, and in particular, relates to a garbage crushing device for sanitation vehicles. The present invention comprises a sanitation vehicle body, wherein a plurality of vehicle driving wheels symmetrically arranged along the center line of the sanitation vehicle body are arranged at the bottom of the sanitation vehicle body, a suction nozzle body is arranged on the sanitation vehicle body, and a suction pipe and a cover shell are arranged at the top of the suction nozzle body. The present invention designs the suspended special-shaped crushing blade assembly into a cantilever form, and there is no need to use a cutter head shaft to fix the suspended special-shaped crushing blade assembly at both ends of the cover shell. The resistance torque is small during driving, the energy consumption is low, the radial runout is reduced during high-speed rotation, it is not easy to cause structural damage, and the service life is long. At the same time, the suspended special-shaped crushing blade assembly can crush long strips of garbage such as branches entering the suction pipe in any posture, and the crushing capacity is stronger than that of traditional blades, the crushing effect is good, and the anti-blocking effect of the pipe is significantly improved.

The utility model discloses a cleaning machine and a walking mechanism thereof, the cleaning machine comprises a machine body, and the walking mechanism comprises a walking disc arranged on the machine body; the cleaning disc is arranged on the walking disc in a sleeving mode, and the walking disc and the cleaning disc rotate on the to-be-cleaned face so as to drive the machine body to move on the to-be-cleaned face; a guide piece is connected between the walking disc and the cleaning disc, and the cleaning disc is arranged on the walking disc in a floating and sleeving mode in the direction facing or deviating from the to-be-cleaned face through the guide piece. According to the walking mechanism, the walking disc and the cleaning disc rotate on the to-be-cleaned face, friction force is generated between the walking mechanism and the to-be-cleaned face, then the machine body of the cleaning machine is driven to move on the to-be-cleaned face, and the cleaning disc cleans the to-be-cleaned face at the same time. According to the cleaning machine, the cleaning disc serves as a part of the walking mechanism, compared with the mode that the machine body is driven to move only through rotation of the walking disc, the radius of the disc body used for promoting the machine body to move is increased, the linear speed is increased, then the walking speed of the cleaning machine is increased, and the cleaning efficiency is improved.

The invention belongs to the technical field of cement production, particularly relates to a fluctuating roller type feeding machine, and aims to solve the problem that an existing fluctuating roller type feeding machine cannot simultaneously guarantee the screening requirement of a feeding end and the conveying requirement of a discharging end. The device comprises a conveying mechanism, and the conveying mechanism comprises a plurality of fluctuation rollers arranged in the conveying direction; the maximum excircle diameter of the fluctuation roller is gradually reduced from the feeding end to the discharging end; the rotating speeds of the fluctuation rollers are the same. The fluctuating roller at the feeding end of the fluctuating roller type feeder is large in diameter, high in linear speed and strong in fluctuating effect, materials can be quickly pushed to roll and screen, layering of the materials with different particle sizes is efficiently achieved, and the feeding and screening requirements are met; the fluctuation roller at the discharging end is small in diameter, low in linear speed and weak in fluctuation effect, disordered disturbance caused by too high movement speed and violent fluctuation of materials can be avoided, and then the stable conveying flow direction of the materials is prevented from being damaged, so that smooth discharging can be guaranteed, meanwhile, secondary mixing of fine materials is reduced, and the screening precision is improved.

The utility model relates to a compound machine, concretely is a kind of high-speed compound machine based on multistage coating and collaborative solidification, including unwinding mechanism, multistage coating device, oven structure and winding mechanism, the multistage coating device includes multiple coating unit with independent drive and metering;The oven structure is formed with multiple independent drying zones, and each independent drying zone corresponds after the coating unit that substrate passes. According to the requirement of different coating process, the order of substrate passing through multiple coating units is flexibly adjusted, continuous production is realized, multiple substrate on-machine operations are not needed, and processing efficiency is effectively improved;By setting multiple independent drying zones in the oven structure, the coating layers of front and rear coating processes are avoided from interfering with each other, the processing quality of coating is improved, coating precision and linear speed are improved, and energy consumption and solvent residue are reduced.

The present application provides an integral carbide forming milling cutter with a secondary chip groove, which includes a working part and an optional connecting part for directly or indirectly connecting to a machine tool, wherein the cutting edges each independently have a rake face, a flank face, and a cutting edge formed by the intersection of the rake face and the flank face, wherein the rake face forms a first rake angle at each location of the cutting edge, and is characterized in that a secondary chip groove is provided on the rake face, wherein the secondary chip groove extends in the length direction along the direction of the cutting edge, and wherein the secondary chip groove has a groove surface close to the cutting edge, so that the groove surface of the secondary chip groove close to the cutting edge forms a second rake angle, and the second rake angle is greater than the corresponding first rake angle. The present application forms a sharp and large rake angle of the cutting edge by providing a secondary chip groove to form a second rake angle, thereby converting a negative rake angle into a positive rake angle, thereby greatly improving cutting efficiency, reducing cutting resistance, and extending tool life.

The present invention discloses an automatic feeding assembly for a mixer, including a mixer, a base is installed at the bottom of the mixer, a hopper is fixedly connected to the top of the base through legs, and a feeding tray is connected to the side of the hopper close to the mixer. The present invention relates to the technical field of mixers. The automatic feeding assembly for the mixer can detect the weight and color of the material monomer through the cooperation between the guide plate, the material dividing wheel, the weighing plate, the first sensor and the material removal plate, and judge whether it meets the production requirements. If it does not meet the requirements, it can be removed through the material removal port, and a second sensor and a second material removal port are set to ensure that the removal of waste materials is effective, and ensure that the raw materials entering the mixer can meet the production requirements in weight and color. Of course, by replacing different first sensors, other properties of the raw materials can also be detected to ensure that the raw materials entering the mixer meet the production requirements, which is beneficial to subsequent production and processing.

The present invention provides a device and production process for quickly pasting a cork pad on the back of a SPC floor, including a conveying device, a pressure roller device, an unwinder and an adhesive tape; the cork pad is installed on the unwinder, the adhesive tape can be rotatably installed on the adhesive tape fixing frame, one end of the cork pad passes through the roller assembly, and the adhesive tape enters the pressure roller device together after being bonded to the cork pad through the roller assembly; the pressure roller device is located on the conveying device, and is used to press the cork pad and the adhesive tape to the SPC floor tightly; the conveying device is used to convey the SPC floor. The present invention uses the adhesive tape as traction, and can paste and cut the film at a high speed on the solid line film pasting line; at the same time, the cork pad can maintain good passability under the auxiliary traction of the transparent tape; because the transparent tape is sticky, the cork pad and the adhesive tape are firmly adhered before entering the pressure roller at the same time, and will not cause deviation, so as to meet the requirements of SPC stone plastic floor pasting.

The utility model discloses a pipe numerical control cutting and beveling machine tool which comprises a mounting base, a mounting rail is arranged at the top of the mounting base, a supporting mechanism, a positioning mechanism and a turnover mechanism are arranged at the top of the mounting rail, a driving mechanism is arranged at the top of the turnover mechanism, and a cutting mechanism is arranged on one side of the driving mechanism. The cutting mechanism comprises a special-shaped mounting plate, an electric telescopic rod A, a driving plate A and a groove cutter, and a cutting mechanism is arranged at the top of the special-shaped mounting plate; the supporting mechanism on one side is matched with the positioning mechanism to position and support a pipe in all directions, the pipe is conveyed to the cutting mechanism, the driving mechanism drives the cutting mechanism and the cutting-off mechanism to be matched to conduct groove cutting on the pipe, and the overturning mechanism is matched with the cutting mechanism to conduct groove cutting on the other end of the pipe. All-directional groove cutting can be conducted on the pipe through cooperation of the mechanisms, and the automation degree and efficiency of the machine tool on pipe cutting operation are improved.

The utility model provides a kind of petroleum drilling and production equipment flange sealing surface grinding repair device, it is related to petroleum drilling and production equipment field.This flange sealing surface grinding repair device is mainly composed of inner support piece and rotating part;Inner support piece is detachably fixed on the inner wall of the flange of petroleum drilling and production equipment, for rotating support for rotating part;Rotating part has the frame body rotating around inner support piece, sand belt polisher for grinding flange sealing surface is arranged on the frame body.This flange sealing surface grinding repair device adopts sand belt polisher to repair flange, with the characteristics of small vibration, high linear velocity, good flatness, can significantly improve the surface finish and flatness of petroleum drilling and production equipment flange sealing surface.In addition, this flange sealing surface grinding repair device also has the characteristics of compact structure, convenient to carry and operate, strong practicality etc.

The invention discloses a marking device for construction of a hazardous chemical substance storage room, and belongs to the technical field of building construction, the marking device comprises an electric trolley, an identification distance measuring device, a rotating assembly and a lime guide cover, and the electric trolley is provided with a storage assembly for placing lime; the identification distance measuring device is arranged at the front end of the electric trolley and used for measuring the distance between the electric trolley and the marking turning point; the rotating assembly is installed on the electric trolley and used for changing the movement direction of the electric trolley at the marking turning point. The lime guide cover is installed on the lower end face of the electric trolley and communicates with the storage assembly. According to the technical key points, the electric trolley serves as a carrier, an identification distance measuring device and a rotating assembly are combined, linear motion and steering can be achieved, the line marking device can achieve automatic and accurate line marking, manual supporting of workers is not needed, the line marking process is simple, line marking is accurate, and good use prospects are achieved.

The present invention provides a turbine disc tenon-groove forming grinding device and method, which relate to the field of grinding processing. Aiming at the problems of low processing efficiency and poor processing accuracy in the current cup-type grinding wheel processing, avoidance parts are reserved upstream and downstream of the grinding part of the grinding wheel. The avoidance parts can reduce the weight of the grinding wheel and reduce the difficulty of driving and controlling the main shaft, thereby improving the processing accuracy. The avoidance parts are used for the turbine disc to pass through to reduce the difficulty of feeding, facilitate switching of processing positions, and improve processing efficiency.

The application provides a preparation method of a cladding alloy layer on a concave-convex spherical surface matching surface and a support. The cladding alloy layer is formed by high-speed laser cladding on the concave-convex spherical surface matching surface to replace traditional stainless steel spherical surface cladding, so that the phenomenon of non-adhesion and cavity of stainless steel and a base material can be avoided. The preparation steps of the cladding alloy layer comprise the following steps: laser cladding of alloy powder on a matching surface on which the cladding alloy layer needs to be formed by a high-speed laser cladding device, so as to form the cladding alloy layer on the matching surface; then polishing the cladding alloy layer; during the laser cladding process, the flow rate of protective gas is controlled to be 2-20 L / min, the flow rate of powder feeding gas of the alloy powder is controlled to be 1-3 L / min, the power of laser is controlled to gradually increase from 20% to 90%, the powder feeding amount of the alloy powder is controlled to gradually increase from 1.5 g / min to 75 g / min; and the cladding height is controlled to be 15-25 mm.

The utility model relates to a kind of two-side clamping electroplating line chuck sub-section misplacement clamping devices, including electroplating product line, at least two steel band groups and with the one-to-one correspondence power supply device of steel band group;Steel band group is sequentially arranged along the conveying direction of electroplating product line;Each steel band group includes the first steel band and the second steel band symmetrically arranged on the both sides of electroplating product conveying line, and electroplating clamp for connecting electroplating product is respectively arranged on the first steel band and the second steel band;Power supply device is respectively connected with corresponding first steel band and second steel band, for supplying power to electroplating product by the electroplating clamp on corresponding steel band group;Along the conveying direction of electroplating product line, the current density provided by power supply device gradually increases;The utility model gradually improves current density according to previous electroplating effect in subsequent slot position, thereby substantially shortening electroplating time of single workpiece under the premise of guaranteeing electroplating quality, so that production line speed is significantly improved, and production efficiency is greatly improved.

The utility model discloses a bending machine applicable to steel bars with different diameters. The bending machine comprises a mounting rack, a self-adaptive clamping mechanism and a bending mechanism, the self-adaptive clamping mechanism comprises a self-adaptive driving assembly and a self-adaptive supporting assembly; the self-adaptive driving assembly comprises a driving wheel, a transmission shaft, a motor, an elastic device A and a supporting seat A; the self-adaptive supporting assembly comprises a supporting wheel, a connecting shaft, a bearing seat, an elastic device B and a supporting seat B; a strip-shaped hole A and a strip-shaped hole B are formed in the rack; the bending mechanism comprises a clamp head, the clamp head is provided with a bending wheel, and the bending wheel is provided with a bending rod; a clamping strip is arranged on the clamp head; in the working process, the bending wheel rotates, the bending rod is matched with the clamping strip, and the reinforcing steel bar stretching out of the clamping strip is bent. According to the steel bar bending machine capable of being suitable for the steel bars with the different diameters, when the steel bars with the different diameters are bent, only the clamping strips need to be replaced, operation is easy, time and labor are saved, and the bending efficiency of machining of the steel bars with the multiple specifications is improved.

The utility model discloses a high-speed wrapping machine with a built-in tape reel structure, which belongs to the technical field of wrapping machines and comprises a rack, a plurality of built-in tape reels, a plurality of movable limiting assemblies, a plurality of tension feedback guide wheels and a telescopic wire passing sleeve. The telescopic wire passing sleeve is arranged at the end, away from the driving assembly, of the rack and comprises a fixed sleeve and a telescopic sleeve, the fixed sleeve is fixedly connected with the rack, and the telescopic sleeve is detachably connected with the fixed sleeve. A traditional external tape reel structure is replaced with the built-in tape wrapping reel structure, the overall rotational inertia of the tape, the built-in tape wrapping reel, the machine frame and other components can be reduced, and the equipment production line speed is increased. Control and adjustment structures such as a tension feedback guide wheel, a movable limiting assembly and a telescopic wire passing sleeve are designed in the wrapping machine, on-line monitoring and control of wrapping tension are provided, the wrapping stability is improved, and therefore the wrapping process requirements are met.

The utility model discloses a coaxial counter-rotating crushing mechanism which comprises a mounting frame, a machine shell, a first motor and a second motor are arranged on the mounting frame, the first motor and the second motor are both connected with the mounting frame, the output end of the first motor is connected with one end of the machine shell, the machine shell is rotationally connected with the mounting frame under the driving of the first motor, and a main shaft is arranged in the machine shell. One end of the main shaft penetrates through one end of the machine shell and then is rotationally connected with one end of the mounting frame, the other end of the main shaft penetrates through the other end of the machine shell, then is rotationally connected with the other end of the mounting frame and is connected with the output end of the second motor, a plurality of blades are arranged on the main shaft and located in the machine shell, and a plurality of cutter teeth are arranged on the side wall of the machine shell. One ends of the cutter teeth are detachably connected with the machine shell, the other ends of the cutter teeth are located in the machine shell, the blades and the cutter teeth are distributed in a staggered mode, and inlet pipes and air outlet pipes which are communicated with the interior of the machine shell are detachably installed at the two ends of the installation frame. The crushing device has the beneficial effect that the purpose of improving the crushing effect is achieved.

The invention discloses a comminuting machine for fine treatment of glass waste filaments and a using method, and relates to the technical field of glass fiber waste filament treatment.The comminuting machine comprises a support, a shell is fixedly installed at the top of the support, and a cutting box is installed at the top of the shell through bolts. According to the glass fiber waste filament cutting device, the saw-tooth-shaped first cutting blade and the saw-tooth-shaped second cutting blade are combined, so that glass fiber waste filaments can be efficiently and rapidly cut; the material uniformizing device is used according to a certain shape and arranged at the corresponding position, the iron removal effect and the material uniformizing effect can be achieved, glass fiber waste filaments obtained after rough crushing evenly fall into the center of the grinding disc, a stable material layer is formed, and matched grinding work of a grinding roller and the grinding disc is facilitated; according to the glass waste wire grinding device, the grinding linear speed is increased through the tire type grinding roller mechanism, the grinding frequency is improved, the standing time of glass waste wires in a grinding area is prolonged through the bowl-shaped grinding disc structure, and the more sufficient grinding effect is achieved.

The present application provides a spiral groove forming milling cutter, which has multiple cutting edges and multiple main chip grooves corresponding to the cutting edges, the cutting edges each independently have a rake face, a flank face and a cutting edge, the rake face forms a first rake angle at each location of the cutting edge, the main chip groove is a spiral groove, a secondary chip groove is arranged on the rake face, the secondary chip groove extends in the length direction along the direction of the negative angle face cutting edge, the secondary chip groove has a groove surface close to the negative angle face cutting edge, so that the groove surface of the secondary chip groove close to the negative angle face cutting edge forms a negative angle face second rake angle, the negative angle face second rake angle is greater than the corresponding first rake angle. The present application can effectively solve the problem of negative rake angle or too small rake angle of the cutting edge of the spiral groove forming milling cutter by providing a secondary chip groove to form a second rake angle, and convert the negative rake angle into a positive rake angle, which greatly improves cutting efficiency, reduces cutting resistance, and extends tool life.

The present invention discloses a new type of high-speed spindle tool-pulling mechanism with self-locking and force-enhancing pull claws, including a spindle rotating shaft core, a BBT tool handle, a tool handle pull nail, a water spray push rod, a self-locking force-enhancing pull claw, a pull claw outer diameter sleeve, a one-way valve, a push spring, a disc spring front gasket, a tool-pulling rod, a disc spring assembly, a disc spring middle spacer, a spindle rear cover, and a tool-releasing pressure sleeve. Compared with the prior art, the present invention has the following advantages: this type of spindle tool-pulling mechanism adopts a BBT tool system and a self-locking force-enhancing pull claw, and can apply a new process of high-pressure water spray high-speed cutting processing of the spindle center. Combining the advantages of the three, it is applied to high-speed spindles of high-end CNC machine tools, effectively ensuring the high-speed operation of the spindle, improving processing efficiency, surface processing accuracy, and stable operation, creating excellent value.

The invention relates to the technical field of semiconductor silicon material manufacturing, in particular to a resin grinding wheel for a silicon carbide silicon boat and a manufacturing method thereof. The grinding wheel comprises a base body and a grinding material layer arranged on the outer circumferential end face of the base body, a through hole is formed in the middle of the base body, and the grinding material layer comprises, by weight, 40-50 parts of resin powder; 10 to 20 parts of diamond; 10 to 20 parts of copper powder; 5-10 parts of microcrystalline corundum; 5-10 parts of reinforced fibers; and 5-8 parts of a wetting agent. The resin grinding wheel for the silicon carbide boat and the manufacturing method of the resin grinding wheel have the advantages that the shape retention is high, the cutting efficiency of the grinding wheel can be improved, the surface roughness of the silicon carbide boat is low, and grinding marks and grinding stripes are avoided.

The present invention discloses a spiral damper used in a low-speed rotating device, including an oil pan, a sealed oil chamber is provided in the oil pan, the oil chamber is filled with a viscous fluid medium, an inner shell is provided in the oil chamber, and the oil chamber is divided into an inner oil chamber and an outer oil chamber by the shell, a first oil hole is provided on the inner shell near its left end, a second oil hole is provided on the inner shell near its right end, a rubber screw rod with an interference fit with the inner shell is provided in the inner oil chamber, the rubber screw rod is movably connected to the oil pan, a movable latch is provided on the oil pan, the latch is inserted into the oil chamber, and an adjustable gap is reserved between the bottom end of the latch and the orifice of the first oil hole, the latch is provided with a spring that drives it to be pressed down and inserted into the first oil hole, and the outer oil chamber and the inner oil chamber can only communicate with each other through the gap or the second oil hole. The present invention has an ingenious structure, which hinders the rotation of the pay-off drum that rotates too fast, improves the wire-out speed of the pay-off drum, and tries to make the wire-out speed of the pay-off drum uniform during the process of winding the steel wire with the hose.

The present invention relates to a rotary ejection type UAV carrier vehicle, comprising a vehicle body, a shaft rod being fixed on the top of the vehicle body; a lifting plate, a through hole being opened on the vehicle body and a sleeve being fixed on the top, the shaft rod being slidably matched with the through hole and the sleeve; the lifting plate being connected to the top of the vehicle body through a spring; the inner ring of an upper ball bearing being fixed to the upper end of the shaft rod, and the inner ring of a lower ball bearing being fixed to the sleeve; two groups of folding frames, each group of folding frames comprising a long rod and a short rod, a launcher and a fixture capable of installing a UAV being fixed on the upper end of the long rod of one group of folding frames, a counterweight being fixed on the upper end of the long rod of the other group of folding frames, and a lifting assembly, thereby realizing the function of the carrier vehicle to perform rotary ejection on the UAV.