377results about How to "Smooth in and out" patented technology

The invention discloses the heavy distillate oil hydrotreatment catalyst and preparing method. The method comprises the following: using the metal at the VIB and VIII as hydrogenation componemt, using the refractory oxide as carrier, the catalyst containing the 1%-20% modified ª‰ zeolite possessing the multi-stage pore path structure of 0.1-1.7nm,1.7-6.0nm and 10.0-90.0nm, The mole ratio of SiO2 and Al2O3 in the ª‰ zeolite being 80-120, and the particle mean size being 0.1-0.5ª–m. Due to choose the proper ª‰ zeolite, the catalyst possesses the characteristics of the high activity of desulfuration and denitrification, and is used for hydrotreating process of inferior distillate oil to produce FCC raw material.

A seat belt apparatus for a vehicle that allows a vehicle passenger to smoothly get in or out of the vehicle. The seat belt apparatus may be mounted in a vehicle, so that with a turning operation of a turning member, a seat belt front-end of an overall seat belt, that is fixed to the turning member of an out-anchor apparatus, is set at a first setting position close to a vehicle passenger upon wearing the seat belt and at a second setting position remote from the vehicle passenger upon retracting the seat belt.

The invention discloses a detection method of soft capsules. The detection method comprises the following steps: recording 360-degree rolling of soft capsules by using color camera equipment, and then recording 360-degree rolling of the soft capsules by using monochrome camera equipment; analyzing whether colors of the soft capsules are qualified according to color images recorded by the color camera equipment, and analyzing whether appearances of the soft capsules are qualified according to monochrome images recorded by the monochrome camera equipment; removing the soft capsules of which the colors and the appearances are synchronously qualified as qualified products; and removing the soft capsules of which the colors or the appearances are unqualified or both the colors and the appearances are unqualified as unqualified products.

The invention relates to a method for extracting fucoxanthin from brown algae. The method comprises the following steps of: performing water swelling pretreatment on the crushed brown algae, and leaching the brown algae by using a water-soluble organic solvent; purifying fucoxanthin in leaching solution by adopting an extraction method and twice column chromatography in turn; and finally, further purifying to obtain a fucoxanthin standard substance with the purity of over 90 percent or over 99 percent through preparative thin-layer chromatography or preparative high performance liquid chromatography. The method for extracting the fucoxanthin has the advantages of simple, economic and efficient technology, and capacity of providing an experimental basis for industrial production of the fucoxanthin and improvement of industrial utilization rate of the algae.

The invention discloses an elevator security system and a control method. The elevator security system comprises an elevator control module, a communication module and a password input device, wherein the elevator control module can generate a temporary password according to the confirmation of a user, and set the authority of the password to visit floors; the communication module provides a communication contact between a visitor and a user, and sends the temporary password to the visitor; and the password input device can input the temporary password and is connected with an elevator controller, and the elevator controller can control the elevator to reach an appointed floor. The elevator security system ensures that an approved visitor can take the elevator smoothly in a mode of temporarily opening through the temporary password. Thus, not only can the security of a building be guaranteed, but also the approved visitor can conveniently enter and exit the building.

To secure a load bearing capability along with a smooth supply and drainage of a lubricant oil into and from a rolling bearing assembly, a retainer and the rolling bearing assembly provided with such retainer are of a design in which the retainer (5) includes an annular wing portion (5a) and a plurality of pillars (5b) extending from circumferential locations of the annular wing portion (5a) and formed with a pocket (6) between the neighboring pillars (5b) for rollingly retaining rolling elements (4) of the rolling bearing assembly. The annular wing portion (5a) has an inner peripheral surface formed to define an inclined annular face (7). This inclined annular face (7) is deployed over a substantially entire width of the annular wing portion (5a) in an axial direction of the retainer (5) and is inclined to flare axially outwardly to have a diameter decreasing towards a mid-center portion of the retainer (5) in the axial direction.

A ceramic material containing organic binder is formed by extrusion, dried and cut off so as to make the honeycomb body 100 having the bulkheads 11 and a plurality of cells 12 partitioned by the bulkheads 11 and penetrating between both end faces of the honeycomb body 100. The tapered jig 3 having a tapered forward end portion 31 is inserted into the opening 13 of the cell 12 of the honeycomb body 100. Then, the bulkheads 11 are heated and softened and deformed by a pushing force given by the tapered jig 3 so that the opening 13 of the cell 12 is expanded to form the large opening 131, and the opening 13 of the adjoining cell 12 is reduced at the same time so as to form the small opening 132. After that, the honeycomb body 100 is fired. In this way, the exhaust gas purifying filter for collecting particulates is manufactured.

The invention discloses an intelligent compensation device for the elongation quantity of a cage carrying rope and an intelligent compensation method thereof. The device comprises a PLC (Programmable Logic Controller) and weighing devices, wherein the weighing devices are arranged at both a wellhead and a downhole, and the PLC is used for receiving weight signals outputted by the weighing devices and judging a starting point when a hoisting winch stops releasing a steel wire rope. The intelligent compensation device is simple in structure and convenient in operation, the intelligentification can be achieved, and a mine car (or a trackless rubber tire vehicle and the like) can be ensured to stably, safely and reliably access a cage, so that the intelligent compensation device has very good practicability, and good economic and social effects can be generated.

The invention relates to a high-solid anaerobic reaction device and method for organic garbage. The device comprises a pulverizer, a pretreatment pond and an anaerobic fermentation tank, wherein the pulverizer is arranged above the pretreatment pond; a spiral conveying device is arranged below the material outlet of the pretreatment pond and connected with the anaerobic fermentation tank; a liquid-collecting pipe is connected to the bottom of the anaerobic fermentation tank and connected to a four-way pipe fitting; the other three ports of the four-way pipe fitting are connected with a water draining pipe, a pretreatment pond backflow pipe and a biogas slurry spraying return pipe respectively; the anaerobic fermentation tank is internally sequentially provided with a spraying perforated plate and a sieve plate from top to bottom. According to the anaerobic reaction device for the organic garbage with the high solid content, the material pulverization, pretreatment and fermentation are integrated, the material uniformity is guaranteed, an anaerobic fermentation process is facilitated, the solid concentration and uniformity of a material are regulated through fermentation liquor backflow, and the stable fermentation of organic garbage is realized; the anaerobic reaction device has the characteristics of wide adaptability, high treatment efficiency, compact layout, stable operation, small land occupation area and the like.

The invention discloses an intelligent household wardrobe, which comprises a cabinet body, an upper partition is fixedly connected to the inner wall of the cabinet, a double-outlet shaft motor is fixedly connected to the top of the upper partition, and a first fixed pulley is fixedly connected to the top of the inner wall of the cabinet. The middle part of the top of the inner wall of the cabinet is fixedly connected with a motor, and the top of both sides of the inner wall of the cabinet is fixedly connected with telescopic slide rails, and the movable part of the telescopic slide rail is fixedly connected by a cross bar, and the middle part of the cross bar is fixed The slider is connected, the motor and the slider are connected through the rotation of the screw rod, the output end of the double output shaft motor is fixedly connected with the storage box through the fixed pulley through the connecting wire, the two sides of the inner wall of the cabinet are fixedly connected with the dehumidification device, the upper compartment The bottom of the plate is fixedly connected with a sterilizing device, and the top of the lower partition is provided with a drying device. The invention relates to the field of smart household products. The smart home wardrobe solves the problem of high-level access and creates a good environment for the storage of clothes.

The invention provides a hoisting device and a hoisting method. The hoisting device is used for integrally hoisting a cabin and a generator of a direct-drive wind turbine, wherein the cabin and the generator are assembled together. The hoisting device contains a T-shaped hoisting beam which has a first end and a second end and a third end which are disposed opposite to each other; a first rigging group which is connected to the first end of the T-shaped hoisting beam; and a second rigging group which is connected to the second end and the third end of the T-shaped hoisting beam, wherein the first rigging group is connected to eachhangerof the cabin and the second rigging group is connected to each hanger of the generator. Therefore, the hoisting device can integrally hoist the cabin and the generator of the direct-drive wind turbine, wherein the cabin and the generator are assembled together.

The invention belongs to a large granular straw biogas fermentation device in the field of an energy source. The large granular straw biogas fermentation device is composed of a fermentation tank (11) and a liquid storage unit (1), wherein a feeding pipe (10) and a biogas pipe orifice (9) are arranged at the top part of the tank body; a slag discharge hole (7) is arranged at the bottom part of the tank body; a gravity pusher (6) is arranged inside the feeding pipe (10); the gravity pusher (6) seals the feeding pipe (10); a circular table slag baffle ring plate (14) is arranged at the upper part inside the tank body; the upper end of the slag baffle ring plate (14) is connected with the outlet of the feeding pipe (10); the lower end of the slag baffle ring plate (14) is connected with the inner wall of the tank body; a sieve hole is arranged on the ring plate; a liquid slag separating plate (16) is arranged at the lower part inside the tank body; the periphery is connected with the inner wall of the tank body; a bleeder tube (3) is arranged at the bottom part of the fermentation tank (11), and a sieve plate (18) or / and a porous slag frame are arranged in the liquid storage unit (1). The large granular straw biogas fermentation device provided by the invention can directly digest the large granular straw, is low in energy consumption and low in input-output ratio, and can smoothly feed and discharge.

The invention discloses a full-automatic solar photovoltaic electric panel cleaning and detection robot. The full-automatic solar photovoltaic electric panel cleaning and detection robot comprises a cover plate, a cleaning mechanism, a deformation fixing mechanism, a robot traveling mechanism. The deformation fixing mechanism comprises an upper rack, a lower rack, a connecting rod I and a connecting rod II. One side of the cover plate is hinged to the connecting rod I, and the other side of the cover plate is slidably connected with the connecting rod II. The cleaning mechanism comprises a rolling brush assembly and universal joints I. The rolling brush assembly can rotate. The universal joints I are arranged at the two ends of the rolling brush assembly. The other ends of the two universal joints are rotatably connected with the upper rack and the lower rack. The full-automatic solar photovoltaic electric panel cleaning and detection robot can automatically travel on a photovoltaic panel array group steel frame guide rail and can automatically adapt to different inclination angles and staggered conditions of photovoltaic electric panels in the parallel and perpendicular directionsto achieve full-automatic cleaning of the photovoltaic electric panels. Besides, the full-automatic solar photovoltaic electric panel cleaning and detection robot can conduct image scanning on the surfaces of the photovoltaic electric panels through image scanning sensors, transmits scanned images and position information to a cloud platform to conduct defect detection like breakage and hot spotsand facilitates guidance, maintenance and replacement.

The invention relates to a quick freezing device, in particular to a tunnel-type liquid nitrogenquick freezing machine, and solves the technical problems of serious liquid nitrogen leakage and high liquid nitrogen consumption of an existing liquid nitrogen quick freezing machine. The tunnel-type liquid nitrogen quick freezing machine comprises a tunnel-type freezing chamber and a surrounding-type conveying mesh belt in the freezing chamber, wherein liquid nitrogen plugging devices are arranged at the feeding end and discharging end of the freezing chamber respectively; each liquid nitrogen plugging device comprises an air box arranged at the top of the conveying mesh belt; an air inlet channel is formed in the top of the air box; an air blowing hole is formed in the bottom of the air box; the air box is hermetically fixed with a top plate and two side walls of the freezing chamber; an air inlet communicated with the air inlet channel of the air box is formed in the top plate of the freezing chamber; a fan is arranged on the air inlet; the width of the air blowing hole is the same as that of the freezing chamber; a material conveying hole is formed between the air blowing hole and the conveying mesh belt. Due to the adoption of the liquid nitrogen quick freezing machine, the liquid nitrogen consumption can be reduced by 40-50% and the quick freezing cost is greatly reduced in comparison with a liquid nitrogen quick freezing machine without the plugging devices.

The invention discloses an extension shaft guide used for lifting counter level in a mine shaft, belonging to the field of mine shaft equipment; the extension shaft guide comprises an upper fixed shaft guide and a lower fixed shaft guide which are distributed on a same shaft line; the upper fixed shaft guide is internally sleeved with a movable shaft guide and is internally provided with an oil cylinder; the upper end of the oil cylinder is fixed in the upper shaft guide; a piston rod of the oil cylinder extends out of the lower end of the oil cylinder; the extending end of the piston rod is connected with the upper end of the movable shaft guide; and when the piston rod extends, the movable shaft guide connects the upper fixed shaft guide and the lower fixed shaft guide. When in working, the device can lift the movable shaft guide by the oil cylinder and then can carry out carriage in and out and the mine car can enter and go out smoothly. When the oil cylinder works, the piston rod is pushed to descend so as to lead the movable shaft guide to connect the upper fixed shaft guide and the lower fixed shaft guide; therefore, the lifting of a container can pass smoothly and uninterruptedly along the vertical direction. The extension shaft guide solves the technical problem that the container needs to reduce speed to pass when being lifted, thus greatly improving the operating efficiency.

A plateau mountain foundation pit excavation construction device comprises a braced frame. The braced frame is provided with a walking supporting mechanism and a supporting frame. The supporting frame is perpendicularly provided with a sliding way rack. A lifting support is arranged at the upper end of the sliding way rack. A sliding way is perpendicularly arranged in the sliding way rack. The sliding way rack is provided with a double-stepping transmission mechanism. A rotary driving device connected with the double-stepping transmission mechanism is arranged in the sliding way in a sliding mode. The power output end of the rotary driving device is connected with a drilling device. An excavation mechanism and a soil lifting mechanism are arranged at the lower end of the driving device. According to the plateau mountain foundation pit excavation construction device, design is reasonable, the automation degree is high, manual labor intensity is fully relieved, the safety degree and the reliability degree are high, and work efficiency of excavation of pile holes is improved; according to a line project pile hole foundation excavation mode, the research on foundation fit excavation mechanical operation machines and tools for a plateau mountain transmission line special foundation is conducted, the device is made to meet the technical requirements of a line construction excavation pile foundation, and the construction mechanization degree and construction efficiency of an alternating current transmission line project are improved.

The invention discloses a vertical slippage-type stereoscopic garage with a rotatable device. The invention relates to a mechanical stereoscopic parking garage which comprises a laneway, multiple layers of car storage garages located on one side or two sides of the laneway, a parking device installed in the laneway and a carrying device. The garage is improved in that the parking device comprises a fixation frame, a lifting device, a translation device and the rotatable device; the fixation frame is installed in the laneway; the fixation frame comprises two parallel vertical frames located on the width direction of the multiple layers of car storage garages as well as horizontal frames installed on tops of the two vertical frames; the lifting device is installed between the two vertical frames and can be moved vertically along the vertical frames; the translation device is installed on the lifting device and can be moved along the width direction of the lifting device; the rotatable device is installed on the translation device and can make circular motion on the translation device; and the carrying device is used to carry cars at parking spaces of the multiple layers of car storage garage and can be moved back and forth on the rotatable device. The garage disclosed by the invention has the advantages that three-dimensional synchronous carrying of vertical moving, translation and rotation can be achieved; and carrying efficiency and the access speed during use are greatly increased.

The invention aims to provide an open-air slope coal mining and transporting device and a working face rapid transferring method thereof. The open-air slope coal mining and transporting device comprises a sliding steering system, a travelling slewing system and a material conveying system. The sliding steering system comprises sliding boots mounted on the front portion of a main beam of a truss, steering device sleeves and sliding boot guiding cylinders, wherein the steering device sleeves and the sliding boot guiding cylinders are mounted on the main beam of the truss; telescopic rods are mounted inside the steering device sleeves; and idler wheels are mounted at the lower ends of the telescopic rods. The travelling slewing system comprises a crawler travelling mechanism, a slewing bearing and a slewing disc, and a connecting frame is mounted on the slewing disc and fixedly connected with a cross beam of the truss. The material conveying system comprises the truss and a belt conveyormounted on the truss. The open-air slope coal mining and transporting device is open-pit coal mine large-scale transporting equipment and is used for efficiently transporting coal cut by a continuousminer to an open-air square, the number of unit frames of a conveying device can be increased according to the mining depths of chambers, after deep mining of the current chamber is completed, the open-air slope coal mining and transporting device can be quickly transferred to the adjacent chamber, thus the working efficiency is high, and flexibility is achieved.

The invention provides a vanadium disulfide nanosheet coated with oxo-vanadium hydroxide and a preparation method and application thereof. The preparation method comprises the following steps: dissolving sodium metavanadate and thioacetamide in deionized water in a magnetic stirring state simultaneously; then, pouring the solution into a reaction lining for sealing, loading the lining into an outer kettle for fixing, and placing the outer kettle into a homogeneous phase reaction instrument; lastly, cooling a reaction product, washing, collecting and drying to obtain the VOOH-coated VS2 nanosheet. The VOOH-coated VS2 nanosheet prepared by the method has uniform chemical composition, higher purity, uniform appearance and a specific self-assembly structure, and shows superior electrochemical performance when being taken as a sodium-ion battery electrode material. Moreover, by adopting the method, the defect of high temperature in a conventional calcining method is overcome, and large-sized equipment and severe reaction conditions are not needed; the vanadium disulfide nanosheet has the advantages of adoption of cheap and readily-available raw materials, low cost, high yield, no need of posttreatment and environmental friendliness, and can be suitable for large-scale production.

The invention discloses a snake-shaped robot with a nuclear equipment pipeline detecting function. The robot comprises a snake body formed by mutually connecting at least two joint modules, a snake head, a snake tail, joint drivers, a detecting system, a locating system, a communication system, an upper computer, a control system and a power supply system, wherein the snake body, the snake head and the snake tail form a main snake body, the joint drivers are installed in the joint modules and used for driving the joint modules to change the rotating angle. The robot is reasonable in design, convenient to operate, high in sensitivity, accurate in monitoring and locating, capable of being successfully applied to nuclear equipment pipelines and other detecting fields, and suitable for application and popularization, and the main snake body is small in size.

The invention relates to a drilling, excavating and soil lifting device of plateau mountain land foundation pit excavation construction equipment. The drilling, excavating and soil lifting device comprises a support framework, wherein a support frame is arranged on the support framework; two slideway frames are vertically arranged on the support frame; an ascending and descending bracket is arranged between the upper ends of the two slideway frames; a slideway is vertically arranged in each slideway frame; a doubling transmission mechanism is arranged on the slideway frames; a rotation driving device connected with the doubling transmission mechanism is glidingly arranged in the slideways; the power output end of the rotation driving device is connected with a drilling mechanism; and the lower end of the drilling mechanism is provided with an excavating mechanism and a soil lifting mechanism. The drilling, excavating and soil lifting device has the advantages that the design is reasonable; the automation degree is high; the work intensity of workers is sufficiently reduced; the safety degree and the reliability degree are high; the work efficiency of pile hole digging is improved; according to a line project pile hole digging foundation type, the study on plateau mountain land electric transmission line special basic foundation pit mechanization operation machine tools is developed, so that the technical requirements of line construction hole pile foundation digging are met; and the construction mechanization degree and the construction efficiency of an alternating current transmission line project are improved.

The patent refers to the field of 'measuring of length, thickness, or similar linear dimensions and angles, areas,irregularities of surfaces or contours'. The invention discloses an automatic axial internal clearance measuring meter for a tapered roller bearing of an automobile gearbox. The measuring meter is characterized by consisting of a frame (10), a workbench (9), a lower external pedestal (27), a lower rotating shaft (21), a lower internal table (20), a driven pulley (38), a steel ball (40), a speed regulating motor (2), a driving pulley (43), a pulley (44), a tensioning component (35), a load hanging plate (32), a lower load bracket (31) capable of moving up and down, a load rod (30), a load (29), a measurement hanging plate (22), a meter clip (24), an inductance measuring head (23), a measuring lever (25), a bracket (3), a yoke plate (5), a compressing cylinder (12), a bearing housing (6), a movable plate (4), a door-shaped bracket (8), a guide rod (7), a pressurizing cylinder (13), an upper external pedestal (16), an upper rotating shaft (15), an upper internal table (18), an air supply system and an electric operation box (14). The automatic axial internal clearance measuring meter ensures the safety and reliability of the bearing by controlling the accuracy of the axial internal clearance of the gearbox so as to meet the requirements on high load and high efficiency of the automobile gearbox and ensure driving safety of the automobile.

The invention provides a pass-type microwave drying system for a sand mould. The pass-type microwave drying system for the sand mould comprises a roller way device, a microwave drying room and a humidity elimination blowing-in device. With humidity control as priority and temperature control as aiding, measuring temperature deviation of the sand mould is reduced, and a mode of top air drafting and bottom blowing-in is adopted so that the fact that air and water vapor in the microwave room circulate smoothly is ensured, quick, efficient and high-class drying of the sand mould is achieved; and multiple patterns such as local operation and remote operation are possessed, integration with other equipment or system is convenient and line production is achieved.

The invention relates to a heavy distillate oil hydrotreating accelerant whose carrier is MCM-41 meson molecular screen compound material, with at least one selected from VIII or VIB for the active group, with compound material being 65-80% of the total weight, VIII metal 4-9%, VIB metal 16-28%, even big radius hole ensuring the smooth running in and out of the reaction molecule to the hole, high ratio surface being beneficial for the technical distraction, providing more active center, accumulated radius distribution increasing accelerant density, improving its activeness and stability.

The invention relates to daily hygienic products, in particular to a novel respiratory protection mask. The novel respiratory protection mask comprises a plastic mask body, ear hooks, an exhaust pipe arranged in the middle of the plastic mask body, an air inlet pipe arranged below the exhaust pipe, a one-way exhaust device arranged at the tail end of the exhaust pipe, an air supply device arranged at the air inlet end of the air inlet pipe, a liquid filter device arranged below the air supply device, and a negative ion device arranged at the air inlet end of the air inlet pipe. Due to the arrangement of the structure, the airtightness and the filter effect of the respiratory protection mask are good, air can enter and exit smoothly, negative ions can be generated, the air supply amount can be adjusted, and the air fresh feeling which cannot be achieved by other similar products can be brought to wearers.

The invention discloses a bidirectional-sensing compensating tank bearing and tank locking device for a hoisting container, relating to mining equipment. The bidirectional-sensing compensating tank bearing and tank locking device is composed of a rack, a tank supporting device and a tank locking device. The tank supporting device is provided with a bearing sensing device 18, and the tank locking device is provided with a tank locking sensing device 19. The tank supporting device comprises a hoisting cylinder 2, a hoisting support 3, a supporting claw 4 and a switching cylinder 5. A piston rodof the hoisting cylinder 2 is connected with a hoisting support 3, the supporting claw 4 is connected with the hoisting support 3, and the switching cylinder 5 is arranged between the supporting claw4 and the hoisting support 3. The tank locking device comprises a rocker arm 12, a pressure block 10, a lower slide 6, an upper slide 11 and a tank locking cylinder 16. The rocker arm 12 is arranged on the rack 1 by virtue of an upper support and a lower support, and the pressure block 10 is arranged at the outer end of the rocker arm. The rocker arm 12 can realize rotary tank locking by virtue of the upper slide, the lower slide, an upper pulley assembly, a lower assembly and a tank locking cylinder 16.

The invention relates to a high-pressure oxygen cabin door belonging to the technical field of high-pressure oxygen cabin structures. The high-pressure oxygen cabin door is characterized by comprising a cabin door body, wherein cabin door sealing rubber skin is arranged on the cabin door body; a door frame is arranged inside the cabin door body; a pull locking device and a pull locking cylinder are arranged above the cabin door body; a main moving cylinder is arranged on one side of the cabin door body; push moving devices are arranged below the cabin door body; a main moving device is arranged below the push moving devices and is arranged on a base; a push locking device is arranged between the push moving devices; a push locking cylinder is arranged inside each push locking device; a left mechanical limiting device is arranged on the left side of the left push moving device; and a right mechanical limiting device is arranged on the right side of the right push moving device. The high-pressure oxygen cabin door is easy to operate and is not required to be locked manually; base plates inside and outside the cabin are positioned on the same level, and a height difference is avoided; people can safely get into and get out of the cabin; a stretcher can steadily enter and exit the cabin; and the cabin door sealing rubber skin is arranged on the cabin door body, so that the air tightness is well guaranteed.

The invention provides a temperature controller assembly and a refrigerator. The temperature controller assembly comprises a panel, a knob assembly and a temperature controller body. A mounting groove is formed in the panel. The knob assembly comprises a fixed base, a knob body and a rotor assembly, the fixed base is fixed in the mounting groove, and the knob body comprises a torsion cap and a torsion bar. The top end of the fixed base is further provided with a groove, and the rotor assembly is located in the groove, and comprises a rotor body and an elastic clutch portion. Clamping grooves are formed in the outer side wall of the rotor body, the fixed end of the elastic clutch portion is connected with the inner wall of the groove, and the free end of the elastic clutch portion is in butt joint with the clamping grooves. The temperature controller body is connected with the panel, and a rotary shaft of the temperature controller body is connected with the torsion bar. According to the technical scheme, rotating resistance generated when the temperature controller body is adjusted is increased, and the problem that the hand feeling is poor in the rotating adjusting process is effectively solved; and the adjusting experience of a user is improved, the situation that a rotor accidentally rotates under the influence of little external force can be avoided, and the reliability of knob adjustment is effectively guaranteed.