35results about How to "No stuttering" patented technology

The invention discloses a mass three-dimensional laser point cloud compression storage and rapid loading and displaying method, and belongs to the technical field of three-dimensional laser measurement. Data are classified and compressed according to different levels by acquiring a point-cloud data overall structure, each level comprises a block set index, a block index and a packet index, high storage and rapid loading and displaying are realized, the method can solve the problem that mass point clouds are large in occupied space and not easy to copy based on a storage format, editing is classified, three-dimensional laser point clouds implemented by the method have the advantages that point cloud storage space is small in cloud storage, browsing and editing, point cloud browsing software occupies less memory, the memory occupied by the point clouds in the browsing process does not exceed 100Mb, first-time loading and displaying and real-time browsing is rapid, clamping is avoided in the point cloud browsing process, the point clouds are dynamically refreshed in real time, refreshing response time is shorter than 1s, editing classification is supported and the like.

The invention discloses a hybrid power transmission system with a dual gear structure. The system at least comprises an engine and a motor, the engine is fixedly connected to one end of a cut-off clutch, and the other end of the cut-off clutch is fixedly connected with the motor and an input shaft assembly of a gearbox; the system further comprises a gear mechanism cooperatively connected to the input shaft assembly and an output shaft assembly for transmitting power through the gear mechanism, the gear mechanism at least comprises a dual gear fixedly arranged on a first input shaft, and the dual gear is in transmission connection with an even-numbered driven gear set arranged on output shaft; the gear mechanism further includes an odd-numbered driving gear set fixedly arranged on a secondinput shaft, and the odd-numbered driving gear set is in transmission connection with an odd-numbered driven gear set disposed on the output shaft. The system mainly has the advantages that set gearsare reduced, the system structure is simplified, all the transmission gears can run in a hybrid power mode, and the fuel saving performance is good; at the same time, the engine can charge a storagebattery during running and idling.

The invention discloses a camera module switching control method and system, a medium and electronic equipment. The control method comprises the following steps: acquiring a first brightness parameterof an image shot by a current camera module; receiving a zoom ratio adjustment instruction and detecting the current zoom ratio of the current camera module in real time; if the deviation between thecurrent zoom ratio and the critical optical zoom ratio is smaller than a first preset threshold value, adjusting a second brightness parameter of imaging of a to-be-switched camera module according to the first brightness parameter so as to enable the second brightness parameter to be consistent with the first brightness parameter; and when the current zoom ratio is equal to the critical opticalzoom ratio, switching the current camera module to the to-be-switched camera module. According to the scheme, the problem of sudden brightness change caused by switching of a plurality of camera modules in any scene is solved, the cost is effectively reduced, and the user experience is improved.

The invention discloses a camera mounting structure and display equipment. The camera mounting structure comprises a shell body, a mounting block and a telescoping rod; a containing space is formed inthe shell body in a hollow manner and an opening which communicates with the containing space is arranged at the shell body; the mounting block is located in the containing space and rotationally connected with the inner wall of the shell body; a camera is arranged on the mounting block; the camera and the rotation center of the mounting block are correspondingly located at the two opposite endsof the mounting block; the telescoping rod is located in the containing space; one end of the telescoping rod is rotationally connected with the inner wall of the shell body and the other end of the telescoping rod is rotationally connected with the mounting block and arranged eccentrically to the rotation center; when the mounting block rotates and enables the telescoping rod to be located at a first position, the mounting block does not bulge out of the shell body; when the mounting block rotates and enables the telescoping rod to be located at a second position, the camera extends out of the opening. According to the camera mounting structure, it can be realized by rotating the mounting block that the camera is hidden or rotated out, and the movement is smooth without stuttering.

The invention discloses a game engine capture card video capture method. The method comprises the steps of firstly, capturing image data through a video capture card, and transmitting the image data into a memory; then, creating an image data storage container in a video memory; setting the image reading type of the image data storage container into a dynamic reading type; starting the CPU (central processing unit) modification permission of the image data storage container in the video memory; then, copying the image data in the memory into the image data storage container in the video memory; finally, closing the CPU modification permission of the image data storage container in the video memory; updating the image data in the video memory, and displaying the image data on a screen. The game engine capture card video capture method provided by the invention has the advantages that Texture capable of being accessed by the CPU is set, so that the creation of an intermediate temporary memory for conversion is not needed; the capture data in the memory can be directly copied into the Texture; a large amount of time is saved; through Map () and Unmap () function operation, the time expenditure of copying resources in the process is reduced; no any clamping phenomenon occurs when capture materials are played in an engine.

The invention discloses a vertical-horizontal combined film evaporator which comprises a vertical film evaporator and a horizontal film evaporator, wherein a discharge hole of the vertical film evaporator is connected with a feed hole of the horizontal film evaporator through a flange bolt; the vertical film evaporator comprises a motor, a reducer, a spindle, a cylinder, a rotor, a foam catching device and a bottom bearing; the horizontal film evaporator comprises a motor, a reducer, a spindle, a cylinder, a rotor and an end bearing; the motor is connected with the reducer; the reducer is directly connected onto the spindle through a key; a mechanical seal is adopted between the spindle and the cylinder; the rotor is rigidly connected with the spindle in the cylinder; and two ends of the spindle are supported on two end faces of the cylinder. The vertical-horizontal combined film evaporator disclosed by the invention is compact in structure, reasonable in design and uniform in film distribution, and the retention time of materials in equipment can be well controlled, so that the product drying degree is controlled, the materials difficultly produce coking scales in the equipment, and the process requirements of removing volatile components and concentrating and drying the product in liquid feeding and solid discharging materials can be met. The vertical-horizontal combined film evaporator can be widely applied to the industries such as chemical industry, foods, medicines and the like.

The invention discloses a multifunctional aerated concrete curing table, and belongs to the technical field of aerated concrete production. A sliding assembly is arranged at the bottom end of the curing table, the curing table is composed of a plurality of placing plates, and a plurality of driving rollers are installed on the placing plates. The multifunctional aerated concrete curing table is scientific, reasonable, and safe and convenient to use. Power generated when the curing table slides in a curing tank is utilized to drive extrusion rollers to extrude extrusion plates, so that the extrusion plates extrude first extrusion air bags. Through the control of a control system, gas generated by the first extrusion air bags is selectively conveyed into corresponding second extrusion air bags, the driving rollers are driven to slightly rotate through the expansion of the second extrusion air bags, so that aerated concrete blocks on the placing plates are driven to move, and the mutual separation between every two aerated concrete blocks is achieved. Therefore, when the aerated concrete blocks are cured, each surface can be well cured, and the curing quality of the aerated concrete blocks is greatly improved.

The invention discloses an integrally-moving high-voltage variable-frequency electric control device, relating to a variable-frequency device. In the device, an exciting surge suppression cabinet, a transformer cabinet, a power cabinet and a control cabinet are arranged in a shell; a vacuum contactor and a current limiting resistor are arranged in the exciting surge suppression cabinet; a rectifying transformer is arranged in the transformer cabinet; a power unit for realizing variable-voltage and variable-frequency output is arranged in the power cabinet; a PLC (Programmable Logic Controller) unit is arranged in the control cabinet; the vacuum contactor and the current limiting resistor are connected with the rectifying transformer; the rectifying transformer is connected with the power unit; the power unit is connected with the PLC unit; the rectifying side of the power unit is used for performing controllable rectification by adopting an IGBT (Insulated Gate Bipolar Transistor) three-phase full bridge; a filtering and energy-storing electrolysis capacitor is connected in parallel in the middle; and an output side is provided with an H-bridge consisting of four IGBTs. The control device has the advantages of convenience and quickness for transporting and installing, and good energy-saving effect.

The invention discloses a DVB (Digital Video Broadcasting) transmission-based high-definition online inspection system, which relates to the technical field of DCB. The system comprises an audio and video signal acquisition end, an audio and video signal receiving end, a lower-level display device and an upper-level command center, wherein the audio and video signal acquisition end is connected with the audio and video receiving end; the audio and video receiving end is connected with the lower-level display device; and the audio and video receiving end is also connected with the upper-level command center. The system has the beneficial effects of front-end 1080P full high-definition video acquisition, local 1080P full high-definition video storage, local 1080P full high-definition video large screen display and upper-level automatic transcoding display. Network bandwidth is applicable; coaxial cable signal transmission is adopted locally; a single cable can be connected with 99 cameras maximally; illegal stealing of the local video can be effectively prevented; the project, the construction and the daily maintenance are simple, time-saving, labor-saving and money-saving.

The invention belongs to the technical field of face recognition, and particularly discloses an intelligent sign-in system integrating face recognition and data analysis. The sign-in system comprisesa sign-in device, a face recognition end and a mental degree evaluation end, the face recognition end is used for recognizing, extracting and comparing face information, and the mental degree evaluation end is used for evaluating mental degree of a user. The mental degree evaluation terminal is used for collecting and analyzing face images and evaluating the mental degree of sign-in personnel, andthe sign-in equipment is used for collecting face information. The system is scientific, reasonable and safe and convenient to use, and is provided with the mental degree evaluation terminal; the mental degree of the sign-in person can be evaluated in two modes of data analysis and machine learning, the evaluation result can be sent to the client to be displayed, a manager can adjust and rest employees with poor mental states according to the displayed mental degree, the error probability in work is reduced, and the work efficiency is improved. The staff can feel warmth of an enterprise, so that the working efficiency can be effectively improved.

Disclosed is a transfer mechanism for a multiplied-speed chain conveying line, the transfer mechanism comprising a lifting and translation mechanism (1) and a blocking mechanism (2), wherein the blocking mechanism (2) is disposed on the outer side of the lifting and translation mechanism (1); the lifting and translation mechanism (1) comprises a bracket (3), a guide rail (4), a multiplied-speed chain (5), a translation device (6) and a first gas cylinder (7). The bracket (3) is disposed under the guide rail (4) and the translation device (6), the first gas cylinder (7) is disposed on the bracket (3), the multiplied-speed chain (5) is disposed within the guide rail (4), and the first gas cylinder is connected to the translation device (6). The blocking mechanism comprises a blocking block (13) and a second gas cylinder (14). The second gas cylinder (14) is connected to the blocking block (13), and the second gas cylinder (14) is fixedly connected to the guide rail (4) of the lifting and translation mechanism (1). The transfer mechanism realizes the entering and leaving of a tooling plate in two directions, thereby improving the space utilization and conveying efficiency.

The invention relates to a hydraulic control system for a light high-mobility emergency and assault breacher vehicle. The hydraulic control system is characterized by consisting of a main valve, a main pump, a quick-change solenoid valve, a quick-change oil cylinder, an accessory oil path quick-change connector, a large arm rotating oil cylinder, a large arm oil cylinder, a bucket rod oil cylinder, a bucket oil cylinder, a knife blade oil cylinder, a left rear supporting leg oil cylinder, a left front supporting leg oil cylinder, a right rear supporting leg oil cylinder, a right front supporting leg oil cylinder and a two-way hydraulic lock. The hydraulic control system is scientific and reasonable in structural design, has the advantages of being time-saving and labor-saving, capable of improving rescue efficiency and reducing injuries and deaths and loss, stable to operate, and the light high-mobility emergency and assault breacher vehicle is a light high-mobility emergency and assault breacher vehicle with relatively high innovation.

The invention belongs to the technical field of face recognition, and particularly discloses an intelligent sign-in system integrating face recognition and data analysis. The sign-in system comprisessign-in equipment, a face recognition end and a mental degree evaluation end. The face recognition end is used for recognizing, extracting and comparing face information. The mental degree evaluationend is used for collecting and analyzing a face image and evaluating the mental degree of the sign-in person. The sign-in equipment is used for collecting the face information. The intelligent sign-insystem is scientific and reasonable and safe and convenient use. The mental degree evaluation end is arranged, two modes of data analysis and machine learning can be used for evaluating the mental degree of the sign-in person, the evaluation result can be sent to the client to be displayed, the manager can arrange days off for the employees with a poor mental state according to the displayed mental degree to reduce the error probability in work, the employees can feel warmth of the enterprise and the work efficiency can be effectively improved.

The invention discloses an air duct rotating structure of an air conditioner fan. The air duct rotating structure comprises a rotating cover, a motor support, a supporting seat, an air supply wind wheel and a gear transmission device, wherein the upper part and the lower part of the rotating cover are respectively provided with a rotating upper cover and a rotating lower cover; the rotating uppercover and the rotating lower cover are fixedly connected with the rotating cover; an air outlet and an air inlet are formed in the rotating cover; the motor support is arranged above the rotating cover; a first driving motor is arranged on the motor support; the supporting seat is arranged below the rotating cover and is rotatably connected with the rotating cover; the air supply wind wheel is arranged inside the rotating cover; one end of the air supply wind wheel is in driving connection with a driving shaft of the first driving motor; the other end of the air supply wind wheel is rotatablyconnected with the supporting seat through a bearing assembly; the gear transmission device is arranged on the rotating cover; the air supply wind wheel is driven by the first driving motor to rotateto introduce air from the negative pressure of the air inlet to form airflow; and the rotating cover is driven by the gear transmission device to rotate to exhaust the airflow from the air outlet in aperiodic left-right swinging state. The air duct rotating structure has the advantages of large air supply range, few parts arranged at the air outlet, simple production process and lower cost.

The invention provides an automatic door and a numerical control machine tool with the automatic door, and belongs to the technical field of mixing equipment. The automatic door comprises a lower guide rail, a side door, an upper guide rail, and a rodless cylinder matched with the upper guide rail. The bottom end of the side door is clamped on the lower guide rail, and the top end is matched with the upper guide rail. The rodless cylinder is connected with the side door, and drives the side door to move along the lower guide rail so as to enable the side door to finish opening and closing actions. The automatic door and the numerical control machine tool with the automatic door are simple in assembly, and save the mounting space; and the automatic door is free of blockage phenomenon in the opening and closing process, is smooth in movement, reduces the collision force and the noise, and prolongs the service life.

The invention discloses a massive three-dimensional laser point cloud compression storage and fast loading display method, which belongs to the technical field of three-dimensional laser measurement. By collecting the overall structure of point cloud data, the data is classified and compressed according to different levels. Each level includes block sets. , block and package three-level index, realize high-level storage and fast loading and display, based on the storage format of the present invention, it can solve the problem of large amount of space occupied by massive point clouds, difficult to copy, editing and classification problems, and the storage and browsing of 3D laser point clouds based on this method , The point cloud storage space is small when editing, and the point cloud browsing and processing software occupies a small amount of memory. During the browsing process, the point cloud occupies no more than 100Mb of memory; the first loading display and real-time browsing speed are fast, and there will be no jams during the point cloud browsing process. It can dynamically refresh the point cloud in real time, and the refresh response time is less than 1s; it supports editing and classification, etc.

The invention relates to an offset driving heavy-load pneumatic four-jaw chuck. The four-jaw chuck comprises clamping jaws, a guide rail mechanism, a centering disc, a driving mechanism, an air inlet ring and a gear. The clamping jaws are connected to the guide rail connecting base, the guide rail connecting base is connected with a sliding base of the linear guide rail, and the linear guide rail is fixed to the guide rail fixing plate. One end of the pneumatic driving module is connected with the guide rail fixing plate, the other end of the pneumatic driving module is connected with the two centering discs respectively, the centering discs are connected to one end of the rotating main shaft respectively, one end of the driving wheel is connected to the guide rail connecting seat, and the other end of the driving wheel can move in the centering discs; the gear is connected to one end of the rotating main shaft, and the rotating main shaft is connected with the guide rail fixing plate. The pneumatic clamping cost is low, the stroke of the clamping jaws is large, the rolling transmission mode is free of the blocking phenomenon, and the pneumatic clamping device has the large application prospect on the heavy-load large-pipe-diameter laser pipe cutting machine with the high clamping force requirement and the large stroke range requirement.

The invention provides a bicycle gear rocker transmission mechanism. As shown in the figure 3 of the specification, the gear rocker transmission mechanism is composed of a transmission rocker, a speedincreasing large gears, forward and reverse rotation small gears and a one-way movable flywheel; power is sequentially transmitted to a pedal rotation short connecting rod, the transmission rocker, aspeed increasing gear set, the one-way movable flywheel and a rear hub to rotate through a pedal. The designed rotating radius of the pedal rotating short connecting rod is the same as the revolutionradius of a large gear rotating pin, then power is transmitted to the one-way movable flywheel to rotate through a speed increasing large and small gear set, and finally the power is transmitted to the rear hub in threaded connection with the inner ring of the one-way movable flywheel to drive the rear wheel to rotate. Meanwhile, in order to prevent the transmission rocker from misplacing and reversing in the power transmission rotating process, two same-direction rotating speed increasing large gears of which the pin revolution radius is the same as that of a pedal rotating short connectingrod are designed and mounted at the tail part of the transmission rocker and are symmetrically distributed on two sides of the reverse rotation small gear, so that balanced power transmission is achieved, and the phenomenon that the transmission rocker misplaces and reverses possibly in the rotating process is prevented.

The invention discloses a small program dynamic UI matching method. The method comprises the steps of setting a function point of a device and a data type of the function point; configuring function points and configuration information related to the panel on a configuration platform of the panel; selecting a corresponding component according to the data type of the function point; drawing panel.Compared with the prior art, the method has the following beneficial effects: the panel can perform unified interaction with the UI; users can automatically draw without development; the user can configure by himself / herself; a newly accessed panel does not need to be accessed by other people. Before a page is entered, due to the fact that configuration of a UI needs to be obtained and dynamic rendering needs to be carried out, the page is likely to be jammed when the page is entered, but no jamming phenomenon exists from most mobile phone tests on the market at present.

The invention discloses a bicycle parallel transmission connecting rod mechanism. According to the Figure 3 in the specification, the parallel transmission connecting rod mechanism is a whole set of low-cost transmission mechanism composed of a parallelogram four-connecting-rod transmission mechanism and a simple speed-increasing planetary gear set; power is sequentially transmitted to a set of parallel transmission connecting rod mechanism composed of a pedal rotating short connecting rod, a parallel transmission long connecting rod and a one-way movable flywheel through pedals and generatesrotation; the designed rotating radius of the pedal rotating short connecting rod is the same as the rotating radius of the one-way movable flywheel pin; then the power is transmitted to the speed-increasing planetary gear set through the one-way movable flywheel to rotate; and finally, the power is transmitted to a spline rear axle matched with the speed-increasing planetary gear set to drive a rear hub connected with the spline rear axle to rotate, so that the purpose of power transmission is achieved. Meanwhile, in order to prevent the parallel transmission long connecting rod from being dislocated and rotating reversely in the parallel rotating process of the parallelogram four-connecting-rod transmission mechanism, a short connecting rod for preventing reverse rotation caused by dislocation is arranged between the middle size position of the parallel transmission long connecting rod and the frame, and the rotating radius is the same as that of the pedal rotating short connecting rod, so that the parallel transmission long connecting rod is prevented from misplacing and reversing in the rotating process, and the pedal rotating short connecting rod and the one-way movable flywheel pin are forced to achieve the purpose of synchronously rotating in the same direction to output power.

The invention discloses an integrally-moving high-voltage variable-frequency electric control device, relating to a variable-frequency device. In the device, an exciting surge suppression cabinet, a transformer cabinet, a power cabinet and a control cabinet are arranged in a shell; a vacuum contactor and a current limiting resistor are arranged in the exciting surge suppression cabinet; a rectifying transformer is arranged in the transformer cabinet; a power unit for realizing variable-voltage and variable-frequency output is arranged in the power cabinet; a PLC (Programmable Logic Controller) unit is arranged in the control cabinet; the vacuum contactor and the current limiting resistor are connected with the rectifying transformer; the rectifying transformer is connected with the power unit; the power unit is connected with the PLC unit; the rectifying side of the power unit is used for performing controllable rectification by adopting an IGBT (Insulated Gate Bipolar Transistor) three-phase full bridge; a filtering and energy-storing electrolysis capacitor is connected in parallel in the middle; and an output side is provided with an H-bridge consisting of four IGBTs. The control device has the advantages of convenience and quickness for transporting and installing, and good energy-saving effect.

The invention belongs to the technical field of wire cable preparation and application and specifically discloses an electronic length counter for a wire cable. The electronic length counter consistsof a base plate, a first vertical support plate, a second vertical support plate, a horizontal support plate, a length counting assembly and a control assembly, wherein the first vertical support plate and the second vertical support plate are arranged on the base plate in a symmetric manner; the horizontal support plate is matched with the first vertical support plate and the second vertical support plate in usage, the length counting assembly is arranged on the first vertical support plate and the second vertical support plate and is matched with the same in usage, and the control assembly is matched with the length counting assembly in usage. The beneficial effects of the electronic length counter for the wire cable are that the electronic length counter high in toughness, corrosion resistance and wear resistance; cooperation of the length counting assembly, the control assembly, two groups of auxiliary incoming wire guiding structures and an outgoing wire guiding structure are matched in usage can help ensure accuracy, stability and non-stop movement when the wire cable passes; fast, stable and reliable wire cable counting can be ensured.

The invention discloses a backrest height adjusting device, which comprises a back frame and a supporting frame, and the back frame is in sliding fit with the supporting frame. A sliding limiting mechanism is arranged between the back frame and the supporting frame and comprises a limiting pin, a limiting groove and a control switch for controlling the transverse movement of the limiting pin; the control switch is in sliding fit with the back frame, and the upper and lower ends of the control switch protrude out of the back end of the back frame to form upper and lower pressing parts; when the back frame is in a use state, the limiting pin is inserted into the limiting groove; and when the back frame is in an adjusting state, the upper pressing part is stressed downwards to enable the lower pressing part to protrude downwards to form a first adjusting direction identification body, or the lower pressing part is stressed upwards to enable the upper pressing part to protrude upwards to form a second adjusting direction identification body, meanwhile, the limiting pin leaves the limiting groove, and the back frame is stressed to move in the moving direction of the control switch. The operation is quick and labor-saving, and the device is simple and practical.

The invention relates to the technical field of hydraulic control, in particular to a hydraulic valve with transition function, comprising: a valve body, on which a pressure oil port, an oil return port and at least one working oil port are arranged; In the body, the spool slides to control the on-off between the working oil port, the pressure oil port and the oil return port; a pressure relief oil circuit is formed in the spool, and when the spool slides from the neutral position to the point where the pressure oil port communicates with the working oil port A transition position is also formed between the working positions. When the valve core is at the transition position, the pressure oil in the pressure oil port is at least partly relieved through the pressure relief oil circuit. The pressure oil port of the hydraulic valve of the present invention is partially relieved after the pressure is built up, and then the pressure oil port is connected with the working oil port, which can not only realize the high pressure of the pressure oil port at the neutral position, but also reduce the oil pressure during the rapid reversing process of the valve core. The impact of liquid on the working oil port, thereby reducing noise, improving the life of components (pipelines, valves, pumps, cylinders), and making the load move smoothly without frustration.

The invention discloses a camera installation structure and a display device. The camera installation structure includes a housing, a mounting block and a telescopic rod. The housing is hollow to form a housing space, and the housing is provided with an opening communicating with the housing space; the mounting block is located in the housing space and is rotatably connected to the inner wall of the housing. The mounting block is provided with a camera, and the rotation centers of the camera and the mounting block are respectively located at opposite ends of the mounting block; It is arranged eccentrically with the rotation center; when the installation block rotates and the telescopic rod is at the first position, the installation block does not protrude from the casing; when the installation block rotates and the telescopic rod is at the second position, the camera protrudes out of the opening. The camera installation structure realizes the hiding or turning out of the camera by rotating the installation block, and the movement is smooth without jamming.

The invention is suitable for the technical field of multimedia, and provides a seamless multimedia file play method, terminal equipment and a storage medium. The method comprises the following stepsof: when a preset instruction is received, obtaining parameter information of a target multimedia file and parameter information of the next multimedia file of the target multimedia file; if the parameter information of the target multimedia file and the parameter information of the next multimedia file accord with a preset requirement, caching data information of the multimedia file and data information of the next multimedia file in a preset cache space; obtaining the data information from the preset cache space in sequence; and decoding and playing the data information. Through the method,the consistency during the switching of multimedia files at present can be improved, and then seamless play is realized.

A pin wheel housing gear milling tool comprises a pin wheel housing supporting seat for containing a pin wheel housing and a gear milling rotating base, wherein the pin wheel housing is placed on thepin wheel housing supporting seat, rotating bearings are arranged at the bottom of the inner side of the pin wheel housing supporting seat, the gear milling rotating base is connected to the pin wheelhousing supporting seat through the rotating bearings, and a notch groove is formed in the upper portion of the gear milling rotating base; and a sliding groove is horizontally formed in the groove wall of the notch groove reserved after the notch groove is formed in the gear milling rotating base in an extending mode from the outer side wall to the interior, a moving block is arranged on the side, close to the open end, in the sliding groove in a sliding mode, and a push broach extrusion plate is connected to the side wall, facing the outer side of the open end, of the moving block. Comparedwith existing manual gear milling, a single person can operate the tool, cooperation and assistance of other persons are not needed, the working efficiency is greatly improved, by means of the gear milling rotating base, finish machining is conducted after allowance is reserved for semi-finish machining of a semicircular hole of the pin wheel housing, the cylindricity, the center circle diameterand the position degree of the machined semicircular hole are guaranteed, and it is guaranteed that an RV speed reducer runs smoothly after being installed.

The invention is a reversing-valve unloading pushrod device used under a coal mine. The device includes bolts, elastic retainer rings used for a shaft, deep groove ball bearings, a hinge pin, a fork-head base, a first nut, a sliding rod, a first threaded hole, a second threaded hole, a cylinder sleeve, a connecting rod, external threads, a compression spring, a second nut, a motor reversing valve, and a connecting plate. The device has the advantages that the fork-head base and the sliding rod are connected by threads, so that it is convenient for installation and disassembly during practical operation; when installed, the compression spring has a pretightening force for supporting the fork-head base and the deep groove ball bearings, the motor reversing valve is prevented from being opened when the device bumps up and down during operation at the operating condition of no generated collision, and therefore the pushrod device is more stable, safe and reliable; then the device is used under the coal mine, after a sliding block of a centrifugal speed governor is thrown away, the disassembly of the motor reversing valve is achieved by the push rod device, the movement of the device is safe and reliable, and the device runs smoothly.

The invention belongs to the technical field of graphic recording materials, and discloses a high-transparency thermosensitive recording material and a preparation method thereof. The thermosensitive recording material sequentially comprises a substrate, a subsequent coating, a thermosensitive developing layer and a protective layer, the adhesive coating layer includes a first resin having a Tg < = 30 DEG C and a second resin having a Tg > = 45 DEG C. The thermosensitive recording material has the characteristics of high transparency and low haze while keeping excellent graphic and text information printing performance and application protection performance, and is very suitable for printing of transparent packaging materials.