35results about How to "Reduce angle" patented technology

This invention belongs to the field of marine photovoltaic anti-icing technology, and provides a detachable anti-icing structure and system for pile-based marine photovoltaic systems. It solves the technical problems existing in current anti-icing cone structures. The technical solution includes two semi-circular hoop assembly structures connected to the pile foundation by clamps. Each semi-circular hoop assembly structure includes an upper semi-circular hoop, a middle semi-circular hoop, and a lower semi-circular hoop. The upper, middle, and lower semi-circular hoops of each assembly structure are sequentially connected from top to bottom and fixed to the pile foundation. Each layer of semi-circular hoop is circumferentially spaced with several support plates. One end of each support plate is fixed to the surface of the semi-circular hoop, and the other end is fixed to an anti-icing vertical plate. All anti-icing vertical plates are fixedly connected by anti-icing horizontal plates. It utilizes the thickness and cross-section of the anti-icing vertical plates to contact the incoming ice, generating contact pressure through a small contact area that exceeds the compressive strength of the sea ice, crushing the sea ice at the contact point and causing brittle splitting.

The utility model relates to a conduction drying device for spinning in the spinning technology, which comprises a box body, a plurality of guide wheels are rotatably mounted in the box body, and through holes are formed in two sides of the box body; a plurality of hollow pipes which are parallel to one another are installed in the box body, and a drying mechanism which blows hot air into the hollow pipes at the same time is arranged on the rear side face of the box body; a lower extrusion roller is rotatably mounted on the inner wall, close to the through hole in one side, of the box body, a U-shaped block is mounted in the box body through a lifting mechanism, and an upper extrusion roller is rotatably mounted in the U-shaped block. Yarn penetrates through the hollow pipes, then hot air is blown into the hollow pipes through the drying mechanism, all faces of the yarn can be evenly dried in the process that the hot air circulates in the hollow pipes, and therefore the yarn drying uniformity is guaranteed, the drying effect is improved, the hot air circulates in the hollow pipes, and the drying effect is improved. The loss caused by diffusion around is reduced, and the drying efficiency is improved.

The winch with the walking mechanism comprises a winding drum, a base, a winding drum support and an installation platform, the base moves on the installation platform in a reciprocating mode, a fixed support is installed in the middle of the installation platform, a lead screw matched with a lead screw nut is installed on the fixed support in a rotating mode, and a driven chain wheel is installed at one end of the lead screw. A winding drum support is installed at the top end of the base, a bearing seat is installed on one side of the winding drum support, the winding drum is installed on the bearing seat, a driving chain wheel is installed at one end of the winding drum, and the driving chain wheel and a driven chain wheel are connected through a chain. A motor is installed on the other side of the winding drum support and drives the winding drum to rotate through a planetary gearbox. According to the utility model, when the winch works, the winding drum part of the winch can correspondingly and axially move along with the winding and unwinding of the steel wire rope on the winding drum, so that the relative position of the steel wire rope is not changed.

The utility model belongs to the technical field of genetic material extraction appliance, concretely relates to special centrifugal tube suit of south American white prawn nucleic acid extraction, including the pipe body, the top threaded connection of pipe body has the pipe cap, the position department of pipe body outer wall is close to the fixed setting of mounting ring of top, the outer wall of pipe cap is below the sliding ring of mounting ring and is connected with the damping sliding, the position department of mounting ring bottom close to the outside edge is hinged with four upper articulated rods at equal intervals, the top of sliding ring is hinged with the lower articulated rod of corresponding position of upper articulated rod, and the corresponding upper articulated rod is hinged with the lower articulated rod between setting articulated assembly. The utility model places the pipe body on the test tube rack through the amplitude of the lower articulated rod and the upper articulated rod protruding from the outside of the pipe body to support the pipe body, so that the pipe body can be adapted to different diameter types of test tube racks, increase the types of centrifugal tubes that can be adapted to test tube racks, facilitate the use of centrifugal tubes, and at the same time, reduce the types of test tube racks that need to be purchased, and reduce the cost of purchasing test tube racks.

This application discloses an electronically controlled moving chainring mechanism, a shifting system, and a bicycle. The bottom bracket is installed in a cylinder body and is fixed circumferentially to the bushing. The piston is detachably connected to the bushing. When the pedal drives the bottom bracket to rotate, the bottom bracket drives the bushing to rotate, which in turn drives the chainring to rotate. When the freewheel shifts gears, the electronically controlled drive mechanism can actively drive the piston to move axially, and drive the bushing and chainring to adjust their positions synchronously, thereby reducing the angle between the chain, chainring, and freewheel, and improving riding efficiency. Furthermore, the reduced angle expands the meshing range between the chain and the teeth, reducing chain slippage, asymmetrical wear, and axial stress, lowering the risk of tooth deformation, and extending the service life of components. Compared to the traditional passive adjustment method of the chain driving the chainring, this embodiment actively controls the chainring movement through an electronically controlled drive mechanism, resulting in smoother and more precise chainring movement, avoiding jamming, and ensuring stable positioning after reaching the correct position, thus improving riding stability.

The application discloses an optical system, which comprises a first lens group, a second lens and a third lens in sequence from a first side to a second side along an optical axis, wherein the first lens group comprises a reflective polarizing element, a quarter-wave plate and a first lens in sequence from the first side to the second side, the second side of the reflective polarizing element is attached to the first side of the quarter-wave plate, the second side of the quarter-wave plate is attached to the first side of the first lens, at least one of the first side and the second side of the first lens, the first side and the second side of the second lens is provided with a partial reflection layer, the first side of the first lens is a concave surface, the second side of the first lens is a convex surface, the second side of the second lens is a convex surface, and the curvature radius R1 of the first side of the first lens and the curvature radius R4 of the second side of the second lens satisfy 0 < R1 / R4 < 2.

The utility model discloses an air-conveying type precise corn seed-metering device, which relates to the field of seeding equipment and is characterized by comprising a rear shell, a bearing, a seed-metering disc, a hole plug-in unit, a transmission shaft, a positioning screw, a centrifugal reducing seed protection plate and a front shell component, the seed-metering disc is positioned in a seed-metering disc mounting groove of the rear shell, the transmission shaft is connected with the seed-metering disc through a positioning screw, the hole insert is mounted in a straight hole groove, the variable-diameter centrifugal seed protection plate is mounted on the outer side of the seed-metering disc to prevent the hole insert from being thrown out, and the front shell is connected with the rear shell through a positioning hole. The corn seed filling device is simple and reliable in structure, the filling posture of corn seeds is optimized by applying dynamic reducing in the seed filling section, the seed carrying stability and the seed cleaning efficiency are enhanced by utilizing the inclined type hole plug-in, and the single-seed precision seeding quality is improved.

The invention provides a display panel and a display device, and the display panel comprises a plurality of light-emitting elements which are arranged in an array; the pixel definition layer comprises a plurality of pixel definition holes which are arranged in an array mode, and the light-emitting elements are located in the pixel definition holes; the packaging layer is located on one side of the pixel definition layer, the packaging layer sequentially comprises a first inorganic layer, a light refraction layer and a second inorganic layer in the direction deviating from the pixel definition layer, the light refraction layer is provided with a plurality of refraction assemblies arranged in an array mode and a planarization layer, and the planarization layer is located between the first inorganic layer and the second inorganic layer. And at least part of the light emitted from the light-emitting element is reflected by the refraction assembly and then is emitted from the light-emitting surface of the display panel. The thickness of the display panel can be reduced, the large-viewing-angle brightness of the display panel is increased, and the large-viewing-angle color cast of the display panel is improved.

The invention discloses a pipeline end connecting thread rolling device, and relates to the technical field of pipeline thread rolling devices. Comprising a thread rolling mechanism used for rolling threads on the outer side of the end of a to-be-machined pipeline and a supporting mechanism used for supporting and fixing the to-be-machined pipeline from the inner side. The supporting mechanism comprises a moving frame and a moving control assembly, and a supporting assembly is installed on the moving frame. The moving control assembly is used for controlling the moving frame to move. The supporting assembly comprises a mounting base, a center rod is mounted on the mounting base, an electric telescopic cylinder is fixed to the mounting base, a translation base is fixed to the output end of the electric telescopic cylinder, and the translation base slides on the outer wall of the center rod. By arranging the supporting assembly, a to-be-machined pipeline needing to be machined can be placed on the outer side of each supporting piece, the translation base is pushed to be close to the annular base based on work of the electric telescopic cylinder, then the included angle of the V-shaped structure is reduced, the supporting pieces are pushed outwards, and therefore the to-be-machined pipeline is supported and fixed from the inner side of the pipeline to the outer side of the pipeline.

The utility model relates to the technical field of gas-liquid separation, and discloses a gas-liquid separation device for recycling furandicarboxylic acid solvent, which comprises a separation tank, the left part and the right part of the separation tank are respectively and fixedly provided with a shell I, and the bottom of the inner cavity of the shell I is fixedly provided with a servo motor; a first rotating shaft is fixedly connected to an output shaft of the servo motor through a coupler, first bevel gears are evenly and fixedly connected to the first rotating shaft in a sleeving mode, second bevel gears are meshed with the outer edges of the first bevel gears, a second rotating shaft is fixedly connected to the second bevel gears in a sleeving mode, and the second rotating shaft is movably connected with an inner cavity of the separation tank in a sleeving mode. A rubber sealing gasket is arranged at the joint of the second rotating shaft and the inner cavity of the separation tank, an air guide plate is fixedly installed at the end, located in the inner cavity of the separation tank, of the second rotating shaft, the angle of the air guide plate is adjusted through a servo motor, the airflow rotation time is changed, sufficient separation is achieved, the separation effect is improved, and the working efficiency of the device is improved; and separation of different media is facilitated, and the applicability of the separation device is improved.

This invention relates to the field of cable gripper technology, specifically to a two-way locking cable gripper designed to prevent accidental detachment. It includes a cable gripper body, a rotating connecting sleeve fixedly connected to the side wall of the body, a rotating shaft sleeved inside the rotating connecting sleeve, and a clamping head sleeved on the outer ring of the rotating shaft. A clamping frame is welded to one side of the clamping head, a coupling wheel flange is connected to one side of the clamping frame, and a coupling wheel is connected to one side of the coupling wheel flange. An anti-detachment mechanism is provided at the top of the clamping head. An elastic mechanism and a friction mechanism are connected to one side of the cable gripper body. This invention achieves stable clamping of the cable based on the designed anti-detachment mechanism. Furthermore, the clamping component adopts a pin-type snap-fit ​​structure, which maximizes the fixation and clamping of the cable, avoiding the risk of detachment and ensuring higher safety.

This invention relates to the field of integral bladed disk design technology, specifically to a method and computer device for constructing a blade root leading edge structure model. The method for constructing the blade root leading edge structure model provided by this invention includes: obtaining multiple first blade profiles of equal height based on a preset three-dimensional blade root model; determining the mid-curve of each first blade profile in each first blade profile; determining the position of the leading edge circle on the extension line of each mid-curve based on preset parameters, and generating a spline curve based on the leading edge circle; generating multiple second blade profile leading edges by fitting the multiple leading edge circles and the leading edges of the multiple first blade profiles; and generating a blade root leading edge structure model based on the spline curve and the multiple second blade profile leading edges. By implementing this invention, the curvature of the surface of the blade root leading edge structure model can be reduced by adjusting the shape of the spline curve and the leading edges of the second blade profiles, thus avoiding high stress points.

The invention discloses an anti-scour turbulent flow mechanism for a bridge pier, and relates to the technical field of bridge pier protection, the anti-scour turbulent flow mechanism comprises a turbulent flow assembly, the turbulent flow assembly comprises a turbulent flow cover arranged on one side of the bridge pier, a base plate is fixed on one side of the turbulent flow cover, a flow guide plate is fixed on the top of the base plate, and a ground cone is fixed on the bottom of the turbulent flow cover; and the downward pressing assembly is arranged on one side of the bridge pier and comprises a connecting piece arranged on the bridge pier. The device has the beneficial effects that through cooperation of the turbulent flow assembly and the downward pressing assembly, the turbulent flow cover and the base plate are attached to a riverbed to achieve foundation turbulent flow anti-scouring, the guide plate guides water flow to the two sides of the pier to reduce direct scouring, meanwhile, a sleeve can be pushed through an adjusting rod, a driving gear and other structures of the downward pressing piece, and the turbulent flow cover is driven to move downwards; the problem that the lower portion of the turbulent flow cover is emptied after a riverbed is scoured is effectively solved, the turbulent flow cover is tightly attached to the riverbed all the time, the situation that riverbed soil loss is accelerated after the turbulent flow cover is suspended is avoided, and the anti-scour effect of the bottom of the pier is greatly improved.

The utility model relates to the field of building protection devices, in particular to a building engineering protection device which comprises a supporting assembly, a protection assembly and an adjusting assembly, and the protection assembly comprises a protection top and a protection net; the protection top is fixedly arranged at the top of the supporting assembly, the adjusting assembly is fixedly arranged at the top of the supporting assembly and arranged at the edge position of the protection top, and the protection net is installed on the adjusting assembly and arranged above the protection top. According to the protective device, the protective net is arranged above the protective top, and the adjusting assembly is arranged to tension the protective net, so that the service life of the protective device can be prolonged, meanwhile, potential safety hazards caused by breakdown of the protective top by falling objects can be reduced, and the safety of the protective device is further improved.

This utility model relates to the field of transformer technology, and more particularly to a miniature transformer, including a mounting plate on which a miniature transformer is fixedly mounted. A base plate is provided at the bottom of the mounting plate. Placement holes are correspondingly provided on both the mounting plate and the base plate. A driving block is slidably disposed within the placement holes. Four circumferentially spaced connecting rods are rotatably mounted on the bottom end of the driving block via a rotating seat. This utility model adjusts the distance between the driving block and the contact block by rotating the rotating ring, reducing the angle between the connecting rods and the driving block, and allowing the sliding block to slide in the sliding groove towards the placement groove. A clamping block is placed in the placement groove to limit the mounting plate, facilitating the replacement and disassembly of the miniature transformer. Combined with heat dissipation plates attached to the side walls of the miniature transformer, it dissipates the heat generated during operation, preventing excessive internal heat from increasing safety hazards.

The utility model discloses a kind of electric heating rotational moulding mould of full-automatic opening and closing mould, it is related to hot rotational moulding mould field, including chassis, the top of chassis is erected with mould body, heating wire is installed in the inner wall of mould body, the left side of mould body is provided with matched end cap, the end cap is clamped and fixed on clamping seat, the left side top of top frame is rotatably connected by the clamping seat through pivot, the middle part of end cap is provided with opening, the outside middle part of clamping seat is provided with telescopic structure, and telescopic structure drives plug to carry out plugging to opening.The electric heating rotational moulding mould of full-automatic opening and closing mould, in the use process, take motor drive mechanical structure to drive end cap to open and close, to complete full-automatic mould closing operation, convenient and fast, improve the efficiency of processing, mould internal laying heating wire can be uniformly heated, make model evenly heated, improve telescopic mechanism drive plug to carry out hole sealing, so that mould overall processing quality is high.

The utility model relates to injection molding machine technical field, concretely relates to a raw material mixing hopper for plastic injection molding machine, it includes processing cylinder, is provided with mixing stirring subassembly in processing cylinder, is provided with anti -blocking unloading component at processing cylinder top, is provided with controllable discharge capacity subassembly at processing cylinder bottom, the utility model discloses a mixing stirring subassembly is set up in processing cylinder, when raw material enters processing cylinder, first, several cutting blades in the uppermost region of the pivot scatter and break the raw material that enters first, then several oblique rectangular plates promote the further mixing of raw material in processing cylinder, finally, the spiral blade stirs and extrudes the raw material close to the bottom export, thereby can carry out all -round, multilevel stirring mixing to multiple raw materials, greatly improves the uniformity of raw material mixing, makes the quality of injection moulded product more stable, and the performance is more consistent.

This utility model relates to the field of tablet detection technology, and more particularly to a tablet centering mechanism and a hardness detection device, aiming to solve the problem of slow centering speed in existing tablet centering mechanisms. The tablet centering mechanism provided by this utility model includes a first conveying component and a second conveying component; the first conveying component is used to convey material to the second conveying component along a first direction, and includes at least two first conveying rollers, the linear velocity of which decreases progressively along the first direction; the second conveying component is used to convey material to the first conveying component along a second direction, and includes at least one second conveying roller; the second conveying roller rotates in the opposite direction to the adjacent first conveying roller and has the same linear velocity. The tablet posture is adjusted by the friction of the conveying rollers, preventing adhesion and pulling of the tablet due to applied pressure, thus ensuring the adjustment effect. Simultaneously, the first conveying component performs pre-adjustment of the tablet posture, shortening the tablet adjustment time.

The utility model discloses a multifunctional vertical face spraying device, which belongs to the technical field of spraying and comprises a spraying panel and a clamping mechanism. The spraying panel is provided with a first horizontal sliding groove and a second horizontal sliding groove which are parallel. The clamping mechanism is provided with a first clamping plate and a second clamping plate which are perpendicular to the first horizontal sliding groove and the second horizontal sliding groove. The clamping plates can keep the included angle between the clamping plates and the first horizontal sliding groove and the included angle between the clamping plates and the second horizontal sliding groove unchanged. A linkage structure is arranged between the first clamping plate and the second clamping plate, so that a spraying worker moves the first clamping plate or the second clamping plate with a single hand, the first clamping plate and the second clamping plate can clamp or release a to-be-sprayed assembly, and one hand can be liberated for positioning the to-be-sprayed assembly; and therefore, one spraying worker can position and clamp the to-be-sprayed assembly, the working efficiency is greatly improved, and the labor cost is reduced.

The utility model provides an inhaul cable mechanism of an automobile inhaul cable type electronic parking brake system, and belongs to the technical field of automobile electronic parking brake system structures. According to the inhaul cable mechanism, due to the design that the arc-shaped protection pipe is fixedly connected to the balance block, the problems that in inhaul cable type electronic parking brake systems of vehicle types such as micro-face vehicles and van trucks in the prior art, after an end connector of the balance block abrades a plastic coating layer on the periphery of a main inhaul cable and a metal core wire in the main inhaul cable, the inhaul cable type electronic parking brake systems break down, and the service life of the main inhaul cable is affected are solved. And safety accidents are caused. The inhaul cable mechanism comprises a main inhaul cable, a balance block, an auxiliary inhaul cable and a protective pipe. One end of the auxiliary inhaul cable is connected with the right end of the balance block, and the other end is connected with a brake on an automobile right wheel; the protective tube is arc-shaped and is fixedly connected to the balance block, the left end of the protective tube is connected with the left end of the balance block, and the right end of the protective tube extends out of the balance block; one end of the main inhaul cable is connected with a controller, and the other end of the main inhaul cable penetrates in from the right end of the protection pipe, penetrates out from the left end of the protection pipe and then is connected with a brake of an automobile left wheel.

This utility model relates to the field of water conservancy construction technology and discloses a pipeline docking and positioning device for water conservancy engineering construction. It includes a fixed frame, a fixed block (first type) fixedly connected inside the fixed frame, an electric push rod fixedly connected inside the fixed block (first type), a fixed column fixedly connected to the output end of the electric push rod, a limit frame rotatably connected inside the fixed column, a T-shaped block fixedly connected to the outer wall of the limit frame, a limit block (first type) slidably connected to the outer wall of the T-shaped block, an L-shaped plate fixedly connected to the outer wall of the limit block (first type), and a slider fixedly connected to the outer wall of the L-shaped plate. In this utility model, activating the electric push rod pulls the fixed column to move, which in turn moves the limit frame, the T-shaped block, and simultaneously the limit block (first type), the L-shaped plate, and the pipes on both sides to dock. This improves the accuracy of pipeline docking, increases work efficiency, and protects the construction worker.

This utility model relates to the technical field of abrasive cloth winding devices, and discloses an abrasive cloth winding device that facilitates tension adjustment. It includes a base plate, an L-shaped frame fixedly connected to the left side of the top front end of the base plate, a first upright plate fixedly connected to the right side of the top front end of the base plate, an insert frame fixedly connected to the bottom rear end of the first upright plate, an insert block slidably connected to the inner wall of the insert frame, a second upright plate fixedly connected to the rear end of the insert block, and sleeves fixedly connected to the rear ends of both sides of the insert frame. A pull rod is slidably connected through one side of the sleeve, and a pull plate is fixedly connected to one side of the pull rod. In this utility model, when the take-up roller needs to be quickly disassembled, the pull plate pulls the pull rod, causing it to pull the pressure plate. The pressure plate moves along the inner wall of the groove. After the pull rod disengages from the insert block, the second upright plate can be removed, and the take-up roller can be removed, thus completing the quick disassembly of the take-up roller.

This invention relates to the field of optics, specifically to a zoom lens and an imaging device. The zoom lens, from the object plane side to the image plane side, consists of a first fixed lens group with positive optical power, a zoom lens group with negative optical power, a second fixed lens group with positive optical power, a focusing lens group with negative optical power, and a third fixed lens group with positive optical power. The second fixed lens group includes two sets of cemented lenses; the third fixed lens group includes at least one lens with positive optical power. The zoom lens satisfies the following conditions: ft / fw > 20; TTL < 100mm; 2 < fG5 / fw < 3. By limiting the focal length of the third fixed lens group and the internal lenses, the third fixed lens group can effectively correct chromatic aberration and aberrations of the preceding lens groups, thus increasing the imaging quality of the zoom lens.

This utility model discloses a large-scale steel plate transverse conveying device, comprising: a base; a conveying mechanism including a primary conveyor and a secondary conveyor, both arranged parallel to each other on the upper surface of the base; the secondary conveyor is located at the end of the primary conveyor, and its conveying direction is offset to one side by 1-5° in the horizontal direction relative to the conveying direction of the primary conveyor; a stop mechanism, wherein a front stop device is located at the end of the secondary conveyor, and a side stop device is located on the side offset in the conveying direction of the secondary conveyor, and pressure sensors are provided on the stop surfaces. The primary and secondary conveyors are combined, and steel plate alignment is achieved through tilting and sliding, saving time; the components of the conveying mechanism and the stop mechanism are readily available, resulting in low equipment cost; the secondary conveyor has a small deflection angle, and the side speed is very low during steel plate alignment, avoiding damage caused by steel plate collisions; the movable secondary base facilitates adjustment of the specific alignment position before production.

The application discloses a handle structure of a water area propeller, an operating device, the water area propeller and a water area movable device. The handle structure comprises a rod body and a handle. The rod body comprises a first end and a second end, and the first end and the second end are opposite in the length direction. The first end is close to and used for connecting a main body of the water area propeller, and the second end is away from the main body. The handle comprises a main handle and a connecting rod, and the connecting rod is connected with the second end. The handle and the rod body jointly form a handle structure with an unchangeable shape. The main handle is rotationally connected with the connecting rod, and the handle structure has a first working mode. In the first working mode, the connecting rod is located on one side of the rod body, and the main handle can rotate relative to the connecting rod in a first direction. The first direction intersects with the length direction of the rod body, and rotation information of the main handle relative to the connecting rod is used for indicating a propelling power of the water area propeller.

The application discloses a display panel and a display device. The display panel comprises a substrate, a pixel definition layer and an optical adjustment layer. The pixel definition layer comprises a pixel limiting portion and a pixel opening formed by the pixel limiting portion. The pixel opening is provided with a light emitting unit. The light emitting unit is used for realizing the display function of the display panel. The pixel limiting portion is used for improving the problem of different color light emitting units. The optical adjustment layer is arranged on the side of the pixel definition layer away from the substrate. The optical adjustment layer is used for diffracting the light emitted by the light emitting unit. The optical adjustment layer comprises a first optical layer and a second optical layer arranged in sequence in the direction away from the pixel definition layer. The refractive index of the first optical layer is smaller than that of the second optical layer. The use performance of the display panel is improved. A protective layer is arranged between the first optical layer and the second optical layer. The protective layer is used for isolating the first optical layer and the second optical layer. The problem of mutual dissolution of the first optical layer and the second optical layer is improved. The light emitting efficiency is improved.

The application discloses an air preheater, which comprises a flue gas channel, an air channel and a plurality of heat pipes, each of the heat pipes has a first pipe section located in the flue gas channel and a second pipe section located in the air channel, the first pipe section forms a first included angle a with the horizontal direction, and the second pipe section forms a second included angle β with the horizontal direction, wherein 0°<a<β<30°. When the air preheater is arranged on a vertical flue at an outlet of a boiler, the second pipe section and the first pipe section of the heat pipe both form an included angle greater than 0° with the horizontal line, and the included angle of the second pipe section with the horizontal line is greater than that of the first pipe section with the horizontal line, so that the working medium can flow back at a faster speed after being condensed into a liquid state, and meanwhile, the working medium can flow to the second pipe section at a faster speed after being evaporated into a gaseous state due to the smaller included angle of the first pipe section with the horizontal line, and therefore, the working medium in the heat pipe can circulate at a faster speed, and the heat transfer effect and the heat exchange efficiency are improved.

This utility model discloses a convenient high-strength screen fixing device for a square gyratory screen, relating to the field of screening machine technology. It aims to solve the problem that the installation and replacement of screens are often cumbersome, time-consuming, and require operators with certain experience and tools, thus reducing equipment downtime maintenance efficiency. The gyratory screen body has symmetrical bottom beams on its inner wall, and a clamping component is mounted on the bottom beam. The clamping component is slidably connected to the screen. By threading a hemispherical auxiliary component to the bottom of the V-shaped strip of the screen, the contact area and friction are reduced when the screen is inserted between the moving component and the clamping component. This makes the screen installation and removal process smoother, significantly reducing installation difficulty and time, thereby improving equipment downtime maintenance efficiency.

This utility model relates to the field of ergonomic office equipment technology, and provides a height-adjustable panel for correcting sitting posture. A through groove is provided on the side of the panel away from the user; a support cylinder is disposed through the through groove, and several grooves are formed along the height direction on the side wall of the support cylinder, which supports the panel; a linkage mechanism connects the panel; the linkage mechanism includes a first clamping member, which can be engaged into the grooves of the support cylinder to press against the side wall of the support cylinder; the first clamping member can engage with different grooves to adjust the tilt angle of the panel. By engaging the first clamping member into the grooves on both sides of the support cylinder, the steps for adjusting the panel are simplified, solving the problems of cumbersome and time-consuming adjustment. By adjusting the first and second clamping members to be located in different grooves, the angle between the panel and the desktop can be increased or decreased.