31results about How to "Exempt from replacement" patented technology

The invention provides a slope cropland fertilizing device and method, belongs to the technical field of fertilizing, and aims to solve the problem that a fertilizing device special for slope cropland is lacked in the prior art. Comprising a vehicle body, a chemical fertilizer box, a fertilizer distributor, a mixer, a fertilization angle adjusting assembly and a fertilization gun, a power device is arranged on the vehicle body, the vehicle body is driven by the power device to advance, and a handrail is fixedly arranged on the back of the vehicle body; the chemical fertilizer boxes are symmetrically and fixedly arranged on the two sides of the vehicle body, through holes are formed in the bottoms of the chemical fertilizer boxes, the through holes in the bottoms of the chemical fertilizer boxes are communicated with the fertilizer distributors, and the fertilizer distributors are used for quantitatively measuring chemical fertilizers; the bottom of the fertilizer distributor is communicated with the mixer; the fertilization angle adjusting assembly is arranged at the bottom of the vehicle body; the fertilization angle adjusting assembly is used for adjusting the fertilization angle; the fertilizing gun is mounted on the fertilizing angle adjusting assembly.

The utility model belongs to the field of batteries, and particularly relates to a busbar and a battery pack. The busbar comprises a plate-shaped busbar main body; n electric connection areas and n-1 fusing areas are arranged on the plate-shaped busbar main body along the axial direction of the plate-shaped busbar main body; the electric connection areas and the fusing areas are alternately arranged one by one, the n electric connection areas and the n single batteries are in one-to-one correspondence, and each electric connection area is used for being connected with a polar terminal, located on the same side, of the corresponding single battery in the battery pack; and the overcurrent area of the fusing region is smaller than that of the electric connection region. When any single battery is short-circuited, the fusing area connected with the electric connection area of the single battery is rapidly fused at high temperature generated by large current, so that the single battery is disconnected, the influence of short circuit on normal use of other single batteries is avoided, the whole battery pack is protected, and the safety of the battery pack is improved; the whole battery pack does not need to be maintained or replaced due to damage of individual single batteries, so that the maintenance cost is saved.

The utility model discloses a laser cutting device, and belongs to the technical field of cutting equipment. According to the laser cutting device, the to-be-cut strip material is conveyed to the cutting table through the feeding mechanism, and the height of the laser galvanometer assembly is adjusted through the laser adjusting driving piece, so that laser emitted by the laser galvanometer assembly can cut the to-be-cut strip material on the cutting table. Loss caused by increase of the use frequency is avoided, the cutter does not need to be maintained and replaced, sheet materials cut by laser are high in consistency, and powder falling and burrs can be reduced; and meanwhile, dust above the cutting table and on the cutting table is adsorbed through the first dust suction assembly and the second dust suction assembly correspondingly, the dust removal effect is guaranteed, then the dust is prevented from influencing products, and the product quality is guaranteed.

The application relates to the technical field of tunnel lighting, in particular to a tunnel lighting device utilizing sunlight refraction, which comprises a turning pipe, an inner light guide pipe, an outer light guide pipe and the like. The turning pipe is a pipeline structure with a vertical bend and is used for changing the light transmission direction, the horizontal end of the turning pipe is connected with the inner light guide pipe, and the vertical end of the turning pipe is connected with the outer light guide pipe. The application does not need photoelectric conversion in the whole process, directly uses natural light for illumination, has no power consumption, no carbon emission and no battery replacement problem, and has low operation cost. A large-diameter light collecting cover is used to cooperate with a large-pipe-diameter installation pipe to improve the initial light collecting area. The light is gathered into a collimated light beam through a first focusing lens and a collimating lens, so that the divergence loss is reduced.

The bending equipment for metal material manufacturing comprises a workbench, supporting columns are fixedly mounted at the four corners of the bottom of the workbench correspondingly, fixing columns are fixedly connected between the four supporting columns correspondingly, dampers are arranged at the bottoms of the four supporting columns correspondingly, a first mounting groove is formed in one side of the top of the workbench, and a second mounting groove is formed in the other side of the top of the workbench; a clamping assembly is arranged in an inner cavity of the first mounting groove, a bending assembly is arranged in an inner cavity of the workbench, a second limiting groove is formed in the top of the workbench, and a plurality of scale marks are arranged on the surface of the second limiting groove. Through the arrangement of the bending assembly, when the device is used for bending a metal pipe, the bending angle can be adjusted in real time according to the design requirements of different workpieces, equipment hardware does not need to be replaced or transformed, the production cost is reduced, production diversity is met, and meanwhile the overall production efficiency is improved.

The utility model relates to the technical field of sports helmets, and provides a sports helmet capable of adjusting the visual field of a protective mask, which comprises a shell, the protective mask, a lining and a visual field adjusting component, the protective mask is rotatably arranged on the front side of the shell, the lining is arranged on the inner side of the shell, a through groove is arranged in the shell, and the visual field adjusting component is arranged in the through groove. The two sides of the through groove communicate with sliding grooves correspondingly, and the visual field adjusting assembly is arranged at the through groove of the shell. The visual field adjusting assembly comprises two side liners, a sliding block, a tension spring, a rotating handle, a bearing seat, a reel, a connecting rope, a threaded sleeve, a screw and a rubber protruding block, the two side liners are arranged at the two ends of the shell respectively, one end of each side liner penetrates into a through groove of the shell, and the sliding block is fixed to the middle of the inner side of each side liner. The utility model provides a practical and economical sports safety equipment solution, and the safety, comfort and convenience during sports are greatly improved.

The utility model discloses a material suction machine for an automatic raw material conveying system, which comprises a seat frame, an air suction pipe and an air inlet pipe are integrally arranged on the edges of two sides of the seat frame, an air inlet flange interface is arranged on the side wall of the air suction pipe, and the air inlet flange interface can be connected with an external vacuum hopper; an air suction flange interface is formed in the side wall of the air suction pipe; the negative pressure fan is fixed on the seat frame, and an air inlet of the negative pressure fan is connected with the air suction flange interface through a pipeline; the dust filter is fixedly communicated with the tops of the air suction pipe and the air inlet pipe, the top of the dust filter is connected with an air stop valve, a tray is fixed below the dust filter, a hopper is placed on the tray, and the hopper is located at the bottom of the dust filter and collects dust particles and impurities falling off from the dust filter; and the electric control box is fixed on one side of the dust filter and is electrically connected with the negative pressure fan and the cut-off valve. The dust removal device is simple in structure, stable and reliable to use and free of daily maintenance.

The present invention discloses a multifunctional STA module testing method and device based on main control platform software. The device includes a collection fault detection base, which can adapt to different STA modules and communicate with them via carrier wave. The method includes the following steps: inserting the STA module into the base, starting the virtual meter and meter reading controller circuit of the base, sending meter reading instructions to the STA module, and receiving the data returned by the STA module; judging the communication function and protocol consistency of the STA module according to the data returned by the STA module; at the same time, performing network point reading, network monitoring and signal strength detection to obtain the network information and signal quality of the STA module, and comparing with the reference data to judge whether the STA module is faulty; finally, displaying the test results and fault indications through a human-computer interaction window or a handheld device. The fault of the STA module can be detected quickly, accurately and at low cost, the efficiency of troubleshooting can be improved, and the normal operation of the STA module and the network can be ensured.

The present application belongs to the technical field of tooling fixture, and discloses a stop block, a stop block preparation method and a fixture. The stop block comprises a base piece, a protection piece and a connecting assembly. The base piece is arranged on a base. The protection piece comprises a mounting cavity, and the base piece can be embedded in the mounting cavity. The protection piece is used for abutting against a product. The base piece and / or the protection piece are detachably connected with the base through the connecting assembly. The base piece is embedded in the mounting cavity of the protection piece. Compared with a 0.1mm-thick Teflon tape or flannelette, the protection piece can provide better buffering performance. Even if the product contacts the stop block with great force or angular deviation, the damage to the product can be effectively reduced. The protection piece can withstand frequent product contact and friction, has good wear resistance and is not easy to break. The protection piece can be used for a long time without maintenance and replacement, thereby reducing the working strength of workers, reducing material costs, and having a positive impact on production efficiency and economic benefits.

The invention discloses a dynamic wave tower for sulfur dioxide flue gas purification, and belongs to the technical field of sulfuric acid preparation. Comprising an absorption demisting tower, a dynamic wave washing pipe and a head tank, wherein the dynamic wave washing pipe sequentially comprises a lower bent pipe section, a straight pipe section and an upper bent pipe section; the lower bent pipe section is connected with the absorption demisting tower, and a dynamic wave nozzle is arranged at the upper part in the lower bent pipe section; an anti-corrosion adhesive layer is arranged on the inner wall of the straight pipe section and comprises a cylinder body, an expansion part and a necking part; a feeding hole is formed in the outer wall of the expansion part, and an acid-resistant patch layer is arranged on the inner side of the anti-corrosion adhesive layer on the expansion part; a cooling water jacket is arranged on the outer wall of the barrel, and an acid-proof brick layer is arranged on the inner side of the anti-corrosion adhesive layer; the acid-proof brick layer extends upwards to form an extension part; the upper end of the extension part is lower than the top of the expansion part, the inner diameter of the extension part is gradually reduced from top to bottom, and the outer side of the extension part and the inner wall of the expansion part form an overflow groove; the head tank and the dynamic wave spray head are connected with an outlet of the dynamic wave pump, the feed port is connected with the head tank, and the dynamic wave spray head upwards sprays dilute acid to the extension part.

The utility model relates to a profiling LED bulb for an automobile, which comprises a lampshade, a lamp holder, a circuit board and a light-emitting component, the lampshade and the lamp holder are of a profiling structure of a C5W halogen bulb, the lampshade is of a split structure and comprises two shells with the same structure, semicircular connectors are arranged at two ends of each shell, the lamp holder is sleeved outside the connectors of the two shells, and the circuit board is connected with the light-emitting component. The circuit board is installed in the lampshade and comprises a body, end heads are arranged at the two ends of the body, a receding hole is formed in the surface of the body, and the light-emitting assembly is arranged in the receding hole. The LED signal lamp solves the technical problems that when a halogen bulb is replaced by an LED signal lamp, adaptability is poor, light distribution is uneven, and the light pattern effect is affected.

The utility model relates to the technical field of fire receiving during steel structure welding, and discloses a novel adjustable welding slag and smoke preventing fire receiving device which comprises a collecting cover, the bottom of the collecting cover is fixedly connected with a second fixing ring, the top of the collecting cover is fixedly connected with a first fixing ring, the top of the first fixing ring is fixedly connected with three pull rods, and the three pull rods are arranged on the collecting cover. And the other end of the pull rod is fixedly connected with a mounting block, the exterior of the mounting block is rotationally connected with a two-way threaded rod, and the exterior of the two-way threaded rod is in threaded connection with two limiting blocks. According to the fire welding device, through mutual cooperation of the clamping plates, the fixing blocks, the two-way threaded rods, the limiting blocks, the connecting rings and other structures, the fire welding device can adapt to concrete beams with different widths when clamping and fixing the fire welding device, so that the fire welding device can more easily adapt to size changes and requirements of the concrete beams; and great modification or replacement is not needed.

This utility model relates to the field of bending equipment technology, specifically disclosing a sheet metal bending device, including a table mechanism. A bending pushing mechanism is arranged in the middle of the table mechanism, and a bending shaping mechanism is arranged on one side of the table mechanism. The table mechanism includes a base, an operating table, and a sheet metal body. This solution uses cylinder one to adjust the height of the operating table to adapt to sheet metal bodies of different thicknesses, ensuring a tight fit with the bending mold. Cylinder two drives a limiting plate, and cylinder three controls a pressure plate, which work together to achieve precise positioning and clamping of the sheet metal before bending, effectively preventing offset or slippage during the bending process. The guide rail slide and cylinder four in the bending pushing mechanism can adjust the horizontal and vertical positions of the pushing bending plate, avoiding uneven local force during bending and ensuring the uniformity of the bent edge. The bending conveying limiting block is quickly limited by cylinder five, further ensuring the accuracy of the bending position, thereby significantly improving bending precision and finished product consistency.

The utility model discloses an automatic bar processing machine tool belongs to the field of bar processing, aims at solving the problem that the existing bar cutting needs manual control push plate feeding. It includes the workstation, is equipped with the limiting component on the workstation, and the component contains two limiting columns of interval, and the limiting space for the bar to pass through is formed between the columns, and the workstation top has the crossbeam, and the crossbeam is equipped with the cutting machine, and the vertical guide rail of one side of the workstation is set up, and the crossbeam has the slide rail of sliding cooperation with the guide rail, and one side of the workstation is equipped with the lifting device connected with the crossbeam, and the push plate is slidably connected on the top of the workstation, and the push plate is driven transmission connection with the slide rail through the linkage device, and when the slide rail moves, the linkage device drives the push plate to move along the length direction of the workstation to drive the bar. The machine tool restricts the bar feeding direction by the limiting component, and the linkage device is associated with the crossbeam lifting and push plate feeding, and manual pushing is avoided, and the efficiency is improved.

The invention discloses a multi-stage multi-source heat pump heat recovery instant hot water and shower room moisture-proof device, comprising a heat recovery device, a dehumidification device, and a filtering device. The heat recovery device comprises a plate condenser, a compressor, a liquid collector, a first drying filter, a preheating coil heat exchanger, a backwashing filter, a wastewater pump, a primary plate exchanger, a flow regulating valve, a preheating water tank, a tap water inlet pipe and a shower head. The plate condenser, the compressor, the liquid collector, the first drying filter, and the preheating coil heat exchanger are connected through pipelines to form a refrigerant circulation system. The backwashing filter, the wastewater pump, the primary plate exchanger and the plate condenser are connected through pipelines to form a wastewater circulation system. The flow regulating valve, the tap water inlet pipe, the preheating water tank, the shower head, the plate condenser and the primary plate exchanger are connected through pipelines to form a hot water circulation system. The invention realizes "instant heating" of the hot water system, can recover exhaust air waste heat and waste water waste heat, and realizes multi-stage automatic filtration of waste water.

The invention discloses a fishery farming intelligent monitoring system based on the Internet of Things, belongs to the technical field of fishery farming monitoring, and comprises a platform end and a user end; the platform end comprises a collection and analysis module, an information module, and a technology reserve module; the collection and analysis module is used for performing collection demand analysis, determining various monitoring recommendation demands, and setting various collection devices according to various monitoring recommendation demands; the technology reserve module is used for setting various farming monitoring modes; the user end comprises a product communication module, a monitoring module, a monitoring and analysis module, a display module, and a farming adjustment module; the product communication module is used for determining a monitoring application mode and a monitoring management mode; the monitoring module is used for performing real-time monitoring of aquaculture and obtaining monitoring data; the monitoring and analysis module is used for analyzing the monitoring data and obtaining monitoring and analysis results; the display module is used for processing the monitoring data and the monitoring and analysis results to form display data; and the farming adjustment module is used for performing farming adjustment management.

The utility model relates to the technical field of washing equipment, in particular to washing equipment, and aims to solve the technical problem that equipment vibrates during operation due to a locking clearance of a locking mechanism of the conventional washing equipment caused by machining or mounting errors. Therefore, the washing equipment comprises a box body, an opening and closing component, a lock hole located in the box body and a spring bolt connected to the opening and closing component in a sliding mode, the spring bolt can enter and exit from the lock hole to complete locking and unlocking of the lock hole and the spring bolt, and the washing equipment further comprises a pressing component and an elastic component. The pressing component is slidably connected into the lock hole and can slide in the extending direction of the lock hole, the first end of the elastic component is fixedly connected with the first end of the pressing component, the second end of the elastic component is fixedly connected with the bottom end of the lock hole, and the second end of the pressing component is provided with a first inclined face. The first inclined face abuts against the spring bolt entering the lock hole under the action of the elastic component, and the spring bolt is tightly pressed towards the edge of one side of the lock hole. And the locking force and the operation stability of the equipment are improved.

The utility model relates to the technical field of LED lamps, and discloses an LED lamp with an LED lamp convenient to replace, which comprises a fixing plate, a lamp box is fixedly mounted at the bottom of the fixing plate, and a cavity is formed in the lamp box; and locking grooves are formed in the bottoms of the left side and the right side of the lamp box, locking rods are movably placed in the locking grooves, the ends, away from the cavity, of the locking rods penetrate through the lamp box, locking blocks located in the locking grooves are fixedly installed at the other ends of the locking rods, and the outer surfaces of the locking rods are movably sleeved with second springs. According to the LED lamp, the electrifying end, the sliding block and the lamp are arranged, when a user replaces the LED lamp, the lamp needs to be pushed upwards, the sliding block and the electrifying end are both located in the cavity, then the lamp is rapidly pulled downwards, tight connection between connecting pieces can be ensured through the structure, and therefore high reliability is provided. And the situation that various auxiliary tools need to be used during replacement and installation, operation is complex and tedious, and time and labor are wasted is avoided.

The invention relates to the technical field of ground target positioning by an unmanned aerial vehicle, in particular to a ground target positioning method based on time accumulation. Comprising the steps that the unmanned aerial vehicle flies according to a preset linear route, and an airborne photoelectric turret of the unmanned aerial vehicle aligns to and continuously tracks a ground target; collecting target position observation data at different angles, and storing the data in an airborne computer of the unmanned aerial vehicle; performing real-time processing and analysis on the collected data through a specific algorithm to identify a random error mode; by filtering and fusing the data, errors are eliminated, and the precision of a positioning result is improved. The method has the advantages that random errors are eliminated by adopting time accumulation data, so that the method has higher resistance to environmental change and sensor noise; the method improves positioning precision, enhances robustness, optimizes data processing and real-time performance, is high in adaptability, is easy to integrate, improves application value, and enhances decision support.

The utility model discloses a die-cutting knife line separating device, and relates to the technical field of mechanical engineering. Comprising a machine shell and further comprises a fifth lead screw, the outer wall of the fifth lead screw is rotationally connected with the inner wall of the machine shell, the outer wall of the fifth lead screw is in threaded connection with third cutter adjusting plates, and the third cutter adjusting plates are arranged along the central axis of the fifth lead screw in a linear array mode. Compared with a traditional integral adjusting device, an operator can regulate and control the die-cutting knife die and the line pressing part according to actual requirements, mutual influence between the die-cutting knife die and the line pressing part does not need to be considered, tedious operation and possible error accumulation caused by integral adjustment are avoided, and the purpose of the die-cutting knife line separating device is achieved.

The invention relates to a vacuum belt dehydrator which comprises a rack, a belt transmission mechanism and filter cloth, the belt transmission mechanism is erected on the rack, the rack is rotationally connected with a filter cloth guide roller making contact with the filter cloth, the filter cloth is laid on an adhesive tape of the belt transmission mechanism, and the filter cloth is filled with a plurality of magnetic bodies. Magnetic steel is arranged on the two sides of the top of the rack in the length direction, a plurality of transverse rods are erected in the middle of the rack in the width direction, magnetic field intensity sensors are arranged on the transverse rods and located in the middles of the transverse rods, and adjustable magnetic coils are symmetrically arranged on the two sides of each magnetic field intensity sensor. The magnetic field adjusting system is electrically connected with the magnetic field intensity sensor and the adjustable magnetic coil, and the magnetic field adjusting system is used for controlling the magnitude and the direction of exciting current of the adjustable magnetic coil so as to ensure that the filter cloth is kept in the middle of the upper portion of the belt transmission mechanism in the width direction, and the filter cloth can be detected in real time; and after the filter cloth deviates, a response is immediately made to automatically correct the deviation.

An oil filter for deep-sea equipment is used for filtering the oil of deep-sea equipment. The main structure consists of an outer shell, a bottom shell, an impeller, a phase rod, a diaphragm guide plate, a guide pressure plate, a filter frame, a return spring, a filter element, and a phase rod guide seat. The oil enters from the upper inlet of the outer shell, is pressurized by the impeller and flows to the filter element for filtration, and then flows out from the outlet below the bottom shell after filtration. When the filter element begins to be blocked due to the accumulation of particulate matter, the pressure difference between the upper and lower sides of the phase rod increases, and the axial movement of the phase rod simultaneously drives the diaphragm guide plate to rotate and switch the filter element. The device solves the problems of unreliable operation of electronic control components of deep-sea equipment for a long time and high cost of component replacement.

The utility model relates to a kind of oblique car center frame rotary top head in oblique bed center frame technical field, comprising: intermediate top head, axial sliding connection in center frame frame body;The intermediate top head head end is equipped with rotary top wheel, tail end is isosceles trapezoidal structure and is equipped with the driving equipment that drives its axial movement;Side top head, it has two, and respectively symmetrically distributed in the upper and lower sides of the intermediate top head;The side top head rotation is connected in center frame frame body, its head end is equipped with rotary top wheel, tail end is equipped with follower wheel, to facilitate under the slope effect of the isosceles trapezoidal structure Outward movement;The utility model is through the slope cooperation of isosceles trapezoidal structure and follower wheel in intermediate top head tail end, by driving equipment drives the axial movement of intermediate top head, while, two side top heads also act, so that three rotary top wheels clamp workpiece, for the workpiece of same diameter, it can improve clamping efficiency, also can improve the consistency of clamping force.

The invention discloses an automobile loudspeaker protection device which comprises a shell, a front cover plate is arranged on the front side of the shell, a loudspeaker body is installed on the inner wall of the rear side of the shell, a partition plate is arranged in the shell, a plurality of rotating rods are rotationally connected to the inner wall of the rear side of the shell, fans are installed on the rotating rods, and the loudspeaker body is installed on the partition plate. A plurality of air inlets are formed in the front cover plate, a rectangular block is arranged in the shell, and two rectangular grooves are formed in the front side of the rectangular block. According to the protection equipment, constant-temperature and dry gas enters the shell, the service life of the loudspeaker is prolonged while heat dissipation of the loudspeaker is ensured, meanwhile, the water absorption of each silica gel particle can be brought into full play through the arrangement of the conveying assembly and the electric heating plate, the service time of each silica gel particle is prolonged, and the service life of the loudspeaker is prolonged. And meanwhile, by means of forward and reverse rotation of the driving motor, constant-temperature dry gas can always enter the shell under the condition that manual intervention is not needed.

The utility model relates to the field of bar production discloses a kind of bar weighing and removing device, including support seat, conveyer a, weighing platform, conveyer b, falling mechanism and display controller, the conveyer a, weighing platform, conveyer b are sequentially fixedly installed on the upper portion of support seat from left to right, the falling mechanism is fixedly connected in support seat right side, the lower portion of support seat is provided with adjusting assembly;The adjusting assembly includes fixedly installed in the deceleration motor of the lower side inner wall of support seat. In the utility model, adjusting assembly is driven bidirectional screw rod rotation by deceleration motor, drives threaded sleeve to move along screw rod, then it is slid by the hinged link of staggered arrangement to push moving piece, finally realize the automatic adjustment of the spacing of guide piece, without manual disassembly or replacement component, different diameter bar can be quickly adapted, and without shutdown, substantially shorten the time of change type, improve the adaptability of equipment to multi-specification production.

The utility model provides a kind of for high-strength metal sample reciprocating torsion split type clamp, including oppositely arranged first clamp and second clamp, first clamp has the first side surface towards second clamp, second clamp has the second side surface towards first clamp, first clamping plate is detachably assembled on first side surface, second clamping plate is detachably assembled on second side surface, the side of first clamping plate towards second clamping plate is first clamping surface, the side of second clamping plate towards first clamping plate is second clamping surface, first clamping surface and second clamping surface can form the clamping of high-strength metal sample, the vickers hardness of first clamping plate and second clamping plate is higher than the vickers hardness of first clamp and second clamp.The utility model can effectively improve the clamping stability of sample, avoid sample skidding phenomenon in reciprocating torsion process, and service life is longer, reduces test cost, maintenance, replacement is more convenient.

The utility model relates to the technical field of protection structures, and discloses a water conservancy reservoir slope building construction protection structure which is characterized in that a second protection plate is mounted at the side end of a first protection plate, a third protection plate is mounted below the second protection plate, a fourth protection plate and rhombic blocks are mounted at the side end of the third protection plate, and a plurality of rhombic blocks are mounted in the first protection plate; a plurality of connecting columns are installed at the side end of the rhombic block, limiting rings are installed on the surfaces of the connecting columns, one ends of the connecting columns are connected with the side plate, the other ends of the connecting columns are connected with the transverse plate, and the protection assembly, the structure installed in the first protection plate and used for protection and the protection device are relatively simple in structural design and modularized. Therefore, when maintenance and replacement are needed, each part can be easily disassembled and reinstalled. According to the design, the maintenance cost is reduced, the reliability of equipment is improved, and the service life of the equipment is prolonged. In addition, if a certain component is damaged, the damaged component can be replaced independently, and the whole protection device does not need to be replaced.

The utility model discloses curved laminated glass rolling equipment. The curved laminated glass rolling equipment comprises a fixed frame, an upper roller assembly and a lower roller assembly, the upper roller assembly comprises upper flexible shafts, a plurality of upper rubber rollers and a plurality of upper curvature adjusting structures, the upper rubber rollers are installed on the upper flexible shafts at intervals, one upper curvature adjusting structure is arranged between every two adjacent upper flexible shafts, and the upper curvature adjusting structures are installed on the fixing frame and rotationally connected with the upper flexible shafts; the lower roller assembly comprises lower flexible shafts, a plurality of lower rubber rollers and a plurality of lower curvature adjusting structures, the lower rubber rollers are installed on the lower flexible shafts at intervals, one lower curvature adjusting structure is arranged between every two adjacent lower flexible shafts, and the lower curvature adjusting structures are installed on the fixing frame and rotationally connected with the lower flexible shafts; a rolling gap is formed between the upper rubber roller and the lower rubber roller, the rolling gap is adjusted through the upper curvature adjusting structure and the lower curvature adjusting structure, and the rolling requirements of curved laminated glass with different curvature specifications can be met.

The utility model belongs to the technical field of pressure release valves, and particularly relates to a safety pressure release valve which comprises a lower valve body, a connecting pipe is fixedly arranged at the bottom of the lower valve body, an upper valve body is arranged at the top of the lower valve body, and a plurality of auxiliary exhaust holes and limiting holes are formed in the inner wall of the top of the upper valve body. Through the arrangement of the limiting hole, the auxiliary exhaust hole, the top cover and the plunger, during pressure relief, if the air pressure in a pipeline is too high and a single air outlet hole cannot quickly exhaust air, the air in the pipeline continues to apply thrust to the valve clack to promote the valve clack to continue to move upwards, the push rod pushes the disc upwards, and then the disc drives the top cover; when the valve clack moves to the position above the air outlet hole, redundant air can enter the upper valve body from the groove and is exhausted through the auxiliary air exhaust holes, double air exhaust and multiple pressure relief are achieved, the situation that the redundant air cannot be rapidly exhausted, and consequently pipe explosion is caused can be effectively prevented, and the service life of the valve clack is prolonged. And the safety of the equipment is improved.