79results about How to "Solve the shortened service life" patented technology

The invention relates to a method and a special device for the comprehensive control of a storage battery pack, which is characterized in that: storage batteries are discharged or charged by measuring the surface temperature of each storage battery of the storage battery pack and the terminal voltage of each storage battery of the storage battery pack; and a storage battery open circuit alarming signal or a storage battery pack overvoltage alarming signal is output by measuring the floating charge current of the storage battery pack. The special device consists of a main machine (1) and a plurality of monitoring and controlling units (11) with the same structure, wherein the main machine (1) comprises a main control circuit (10), a floating charge current measuring circuit (2), a bus voltage measuring circuit (3), a charge module circuit (4), a discharge module circuit (5), a liquid display (7) and a keyboard input circuit (8). The monitoring and controlling units (11) are parallelly connected; and the output ends of the charge module circuit (4) and the discharge module circuit (5) are connected with the charge control input end and the discharge control input end of charge and discharge control circuits (13) in the monitoring and controlling units (11) respectively. The method and the device are widely used for detecting the storage batteries for power plants, transformer substations, telecommunication and the like.

The invention discloses an awakening method and device of a mobile terminal and the mobile terminal. The method comprises the following steps: detecting the current gesture of a user in a preset space range through an ultrasonic transducer on the mobile terminal when the mobile terminal is in in standby state; matching the current gesture with a preset standard gesture and obtaining the lasting time length of the current gesture if the matching is successful; and judging whether the lasting time length is in a preset time length range or not and determining whether to awaken the mobile terminal or not according to the judging result. According to the awakening method and device of the mobile terminal, the current gesture of the user is detected on the basis of the ultrasonic transducer on the mobile terminal, and the mobile terminal is awakened when the current gesture is successfully matched with the preset standard gesture and the lasting time length of the current gesture is in the preset time length range, so that the problem of short service life of keys due to the existing scheme of awakening the mobile terminal through clicking keys is solved, the service life of the mobile terminal is prolonged and the usage experience of the user is improved.

The invention discloses an anti-ultraviolet aging PVC film material and a preparation method thereof. The method comprises the following steps: (1) burdening polyvinyl chloride, epoxidized soybean oil, titanium dioxide, a pigment and an antioxidant according to the mass percent of 100:1:0.2:0.08:0.3, and evenly agitating the raw materials; (2) then sequentially carrying out banburying, crude refining and refining procedures, wherein banburying is kept at 150-160 DE C for 3-4 minutes, crude refining is kept at 170-180 DEG C for 7-8 minutes, and refining is kept at 170-180 DEG C for 5-6 minutes; (3) cooling to 160-170 DEG C, extruding and filtering, and then cooling and sizing, trimming and coiling to prepare a product after four-roll calendering, embossing and blending. By adopting the anti-ultraviolet aging PVC film material prepared by the preparation method disclosed by the invention, a series of problems caused by ultraviolet light irradiation can be effectively solved.

The invention discloses a raw material cutting device for machining and an operation method of the raw material cutting device for machining. The raw material cutting device for machining comprises amachine frame. The top of the machine frame is connected with a top plate through support columns. The bottom of the top plate is connected with a cutting machine through a first air cylinder. The surface of the machine frame is rotationally connected with a first transmission roller through a first rotating shaft. A brake motor is installed on the side face of the machine frame. An output shaft of the brake motor drives the first rotating shaft to rotate through a transmission belt. The top of the machine frame is provided with an anti-splashing plate corresponding to the cutting machine in position. According to the raw material cutting device for machining and the operation method of the raw material cutting device for machining, the raw materials are automatically conveyed and fixed, the raw materials are cut through the cutting machine, after cutting, the anti-splashing plate limits waste chips, the rebounding waste chips are blown into a collection box through an air blower, thewaste chips in the collection box can also be cleared, and in this way the problems that in the prior art, during cutting, a large number of waste chips can be generated, the waste chips can influencenormal operation of the equipment, and the service life of the equipment is shortened as a result are solved.

The invention discloses a full-temperature range pressure swing adsorption purification method for simultaneously removing water and hydrocarbon from natural gas. The full-temperature range pressure swing adsorption purification method comprises a light hydrocarbon and water vapor concentration process and a temperature swing adsorption rectification process, wherein in the light hydrocarbon and water vapor concentration process, the adsorption pressure is 0.5-7.0MPa, the operating temperature is 50-150 DEG C and normal-atmosphere evacuation desorption is performed; unabsorbed natural gas, containing methane and the like, is discharged from the top of an adsorption tower, is used as intermediate gas for removing most of water and light hydrocarbon, and then enters the temperature swing adsorption rectification process; a natural gas product with dew point drops of water and the hydrocarbon being lower than the minimum ambient temperature of 30-50 DEG C escapes from the top of the tower; one part is used as regenerating gas for regenerating the temperature swing adsorption rectification process and then the regenerating gas and raw gas are mixed and return to the light hydrocarbon and water vapor concentration process for further recycling the natural gas, or one part is used as purging gas of the light hydrocarbon and water vapor concentration process and the purging gas and desorption gas are pressurized for processing and recycling C2+ or sent out of a boundary for processing. By the full-temperature range pressure swing adsorption purification method, the yield of methane is 90-95% or above and the yield of C2+ is higher than 90%.

The invention discloses a novel storage battery production method. The novel storage battery production method comprises the following steps: preparing raw material powder for preparing a porous carbon material, mixing the raw material powder for preparing the porous carbon material and raw materials for preparing a positive and negative active substances, stirring and preparing a paste-like substance, and smearing the paste-like substance on a graphite grid; carbonizing the paste-coated graphite grid, activating, perforating, cooling, thus obtaining a positive polar electrode and a negative polar electrode; laminating the positive polar plate, a glass fiber partition plate and the negative polar plate to form a multilayer polar plate, assembling the laminated multilayer polar plate into abattery box, and injecting electrolyte into the battery box; after the battery box is filled with the electrolyte, standing for 30 minutes, charging and discharging a battery, and activating the positive and negative active substances; and after the battery is domesticated, adjusting the concentration of the electrolyte in the battery, and sealing a liquid injection hole of the battery. By adopting the novel storage battery production method, not only can the problem of the complicated traditional production process be solved, but also the problem that the environment is severely polluted inthe production process can be solved, the service life of the battery can be prolonged, and the high-magnification charging-discharging performance can be improved.

The invention provides high-strength polyethylene microporous film and a preparation method and application thereof, belongs to the field of film materials and can solve the problem that microporous film in the market has shorter life due to low strength. The preparation method according to the technical scheme includes: proportionally mixing polyethylene B and a reaction solvent, injecting the mixture into a reaction container, and carrying out high-temperature swelling; proportionally mixing polyethylene A and the mixture subjected to high-temperature swelling, melting the resultant to obtain high-temperature melt, filtering and metering the high-temperature melt, pumping the melt into a plate mold head, cooling to obtain an oil-bearing casting; subjecting the oil-bearing casting to primary bidirectional drawing, performing extracting, and performing secondary bidirectional drawing to obtain polyethylene film; rolling the thermally treated polyethylene film to obtain the high-densitypolyethylene microporous film. The invention applies to the preparation of high-strength polyethylene microporous film.

Disclosed is an oxygen blowing from the bottom method foe fusion casting fire resistant material, which includes steps of feeding material into the electric furnace, melting the material in the temperature of 1900~2300deg.C, its characteristics include: in the course of temperature rising, the compressed air and oxygen in transmitted into the furnace from the air entrance at the bottom, with their pressure separately being 0.05-1.5Mpa. Its advantages are: in the course of temperature rising, the compressed air and oxygen in transmitted into the furnace from the air entrance at the bottom, which has promoted volatilization of material in furnace, accelerating the melt material flowing, so that decreases the air hole rate of the fire-resistant material and increases its purity, prolongs its service life, meanwhile, it also reduces environmental pollution caused by waste material and saves the raw material.

The invention provides a method for reducing solubility of a discharging product of a zinc electrode. In the method, charging and discharging of a cell are carried out by preparing an alkaline electrolyte and combining the alkaline electrolyte and calcium zincate serving as a zinc electrode according to a conventional method, wherein the alkaline electrolyte comprises the following components: 0.2-0.5g / mL potassium hydroxide, 0.01-0.03g / mL lithium hydroxide, 0.08-0.12g / mL potassium fluoride dihydrate, 0.04-0.24g / mL potassium carbonate and 0.002-0.006g / mL sodium hexametaphosphate. By utilizing the electrolyt and application method of the electrolyt provided by the invention, the solubility of the discharging product of the zinc electrode in the electrolyt is reduced by more than 80%, and the problem of shorthand zinc battery service life caused by overlarge solubility of the discharging product of the zinc electrode in the alkaline electrolyt is solved.

The invention discloses a charging pile for a new energy vehicle. The charging pile for the new energy vehicle comprises a charging pile main machine. A charging wire is arranged at the bottom of thecharging pile main machine, a charging connector is arranged at the head of the charging wire, the charging connector is inserted into an interface inserting slot formed in the top of the charging pile main machine, a bottom plate is arranged on one side of the charging pile main machine, a supporting plate capable of being turned outwards is arranged at the outer side end of the bottom plate, andthe bottom of the supporting plate is rotatably installed in rotating shaft holes formed in both sides of the bottom plate through rotating shafts. The rotating shafts are sleeved with torsion springs, the rotating shafts are installed in the rotating shaft holes through the torsion springs, a row of positioning mechanisms which are longitudinally arranged are arranged on the inner side surface of the supporting plate, and the positioning mechanisms are formed by staggering more than one positioning device. The charging pile for the new energy vehicle mainly solves the problem that connectingwires of the charging pile are arranged in disorder and drag with the ground, and the neat placement of the charging wire can be effectively ensured through the supporting plate, and the problem thatthe service life is shortened due to the fracture of a charging wire interface caused by pulling the charging wire is solved.

The invention discloses a brightness control method and a brightness control device, belonging to the field of liquid crystal displays. The brightness control method comprises the steps of: acquiring a temperature value acquired by a first driving integrated circuit IC, and detecting whether the temperature value reaches a predetermined threshold value; and transmitting a control signal to a second driving IC if the temperature value reaches the predetermined threshold value. Whether the temperature value reaches the predetermined threshold value is detected through acquiring the temperature value acquired by the first driving, and the control signal is transmitted to the second driving IC if the temperature value reaches the predetermined threshold value; the problems that service life of circuit devices and backlight membrane materials in electronic equipment is shortened because a backlight source produces overhigh temperature due to overhigh power is solved; and the effects of monitoring the temperature produced by the backlight source timely, controlling a backlight circuit so that the temperature is kept below the predetermined threshold value, and prolonging the service life of the circuit elements and the backlight membrane materials in the electronic equipment are achieved.

The invention relates to a powder heating assembly suitable for a quick forming device. The powder heating assembly comprises a powder supply trough and a heating module, wherein the powder supply trough is provided with an accommodating space and a powder falling opening; the accommodating space is used for accommodating forming powder and is communicated with the powder falling opening; the heating module is arranged at the bottom of the powder supply trough and comprises a material discharging heat guide cover piece and a heat guide piece; the material discharging heat guide cover piece is arranged at the powder falling opening in a covering manner and is provided with a material outlet; the material outlet is communicated with the powder falling opening; the heat guide piece is arranged between the bottom of the accommodating space of the powder supply trough and the material discharging heat guide cover piece, and a heating unit is arranged in the heat guide piece; the heating unit is used for heating the heat guide piece, so that the forming powder at the bottom of the accommodating space of the powder supply trough can be preheated to eliminate humidity in the forming powder and form dry forming powder; the dry forming powder falls off through the material outlet for powder pavement.

The invention discloses an intelligent dry separator of a stainless steel machine body. The intelligent dry separator comprises a main machine body and an X-ray source, wherein the main machine body comprises a sorting device, an identification device and a conveying device, the X-ray source is used for generating X-rays required by the identification device for identifying the type of materials;and the X-ray source (21) is arranged in a protective shell (101), and components forming the intelligent dry separator are made of stainless steel. The intelligent dry separator of the stainless steel machine body solves the problem that the service life is shortened due to the fact that the sorting device is in a humid environment for a long time, and the service life of the sorting device is prolonged. Due to the adoption of a plurality of protection modes, the influence of ray radiation on the working condition is reduced, and the influence on operators is especially influenced.

The invention discloses an anti-corrosion reinforcing structure for an embedded type precast beam. A precast beam body comprises concrete and steel bars arranged in the concrete. Joint mixture releasing devices are embedded in the concrete of the precast beam body, and joint mixtures are packaged in the joint mixture releasing devices. When cracks appear in the precast beam, the joint mixture releasing devices crack, and the cracks are filled with the joint mixtures. By means of the anti-corrosion reinforcing structure, the problem that the service life of a precast beam is shortened due to the fact that internal steel bars are corroded easily after cracks appear in the reinforced concrete precast beam in the prior art is effectively solved; the anti-corrosion reinforcing structure has an automatic crack filling function after cracks appear in the precast beam, meanwhile, the possibility of crack occurrence in the precast beam is greatly lowered through the reinforcing structure, and therefore the service life of the precast beam is greatly prolonged; and the anti-corrosion reinforcing structure has high practical value.

The invention provides a lock-up structure of a follow-up bridge of a vehicle, a control method thereof and the vehicle. The lock-up structure comprises an air cylinder body, a piston and a gas storage device. The piston is connected to the air cylinder body and the follow-up bridge, separately, and the air cylinder body is connected to the gas storage device. The lock-up structure also comprisesa control valve which comprises an air inlet port, an air outlet port and an exhaust port. The exhaust port communicates to external environment, and the air inlet port communicates to the gas storagedevice. The control valve has a first state and a second state. In the first state, the air outlet end is opened, the air inlet port communicates to the air outlet port and the exhaust port is cut off; in the second state, the exhaust port is opened, the air outlet port communicates to the exhaust port and the air outlet port is cut off. According to the lock-up structure of the follow-up bridgeof the vehicle and the control method thereof, the working hour of the valve body is shortened and the service life of the valve body is prolonged by arranging the normally opened valve body. The lock-up structure is safe and reliable and low in cost and is suggested to be popularized and used on a large scale.

The invention discloses a device based on patterns printed on the surface of timber. A positioning bolt is arranged on a base. A heating plate is arranged on the base. A forming die is arranged in the heating plate. An installation plate is arranged on the heating plate. A cylinder is arranged on the installation plate. A piston rod is arranged between the cylinder and the heating plate. A control box is arranged outside the cylinder. A counter, a punching time controller, a temperature controller and power switches are arranged on the control box. Hand-operated switches and a foot switch are arranged outside the control box. The outer wall of the positioning bolt is sleeved with a fine tuning positioning nut. An electromagnetic control valve is arranged outside the cylinder and connected with a gas-liquid separator. A lubricating oil tank is arranged below the gas-liquid separator. A gas pressure regulating valve is arranged between the lubricating oil tank and the gas-liquid separator. The device is convenient to use, marks are generated on the surface of the timber through heat, the forming quality is high, the surface of the timber can not be damaged, and the service life is ensured.

The invention discloses a retaining wall drainage system. The retaining wall drainage system comprises a plurality of drainage pipes, an inverted filter layer, a water leading pipe, a geogrid and geotextiles. A gap between the geogrid and a retaining wall body is filled with the inverted filter layer. Geotextiles are arranged on both sides of the inverted filter layer, the drainage pipes are arranged on the retaining wall body in a penetrating mode, and the water leading pipe is vertically arranged in the inverted filter layer between a retaining wall and earthwork. The water leading pipe communicates with partial drainage pipes to drain rainwater from the surface of soil, the drainage pipes which do not communicate with the water leading pipe discharge accumulating water inside the soil,and the geogrid is tied to the side, away from the retaining wall body, of the water leading pipe. The retaining wall drainage system has simple construction and smooth drainage.

The invention belongs to the technical field of mechanical equipment, and particularly relates to a jaw crusher for garbage disposal. The jaw crusher comprises a jaw crusher body and an iron removal device, wherein the iron removal device is arranged at the upper part of the jaw crusher body; the bottom of the iron removal device is connected with the upper end of a feeding port of the jaw crusherbody; the iron removal device comprises a rocker arm, a lifting mechanism and an iron attracting unit; the upper end of the rocker arm is connected with the outer side of the lifting mechanism; the iron attracting unit is connected with the bottom end of the rocker arm and arranged in a cavity formed between a fixed jaw plate and a movable jaw plate; and two iron attracting parts are symmetrically connected to the two sides of the bottom of a connecting arm. The jaw crusher solves the problems that an existing jaw crusher is seriously affected, the phenomenon of iron choking is likely to happen, and the service life of equipment is shortened due to the fact that iron-containing pieces carried in stone waste, especially construction waste generated by house demolition cannot be separated.

The invention discloses a special built-in valve for a worm type gas meter. The special built-in valve comprises a valve seat, a sealing frame, a sealing plug, a movement bracket, a micromotor, a rack valve rod, a worm and a gear set. The valve seat is divided into a valve chamber and a motor chamber by the movement bracket, and the micromotor is fixed to the movement bracket; the top and side of the valve chamber are provided with an air outlet and an air inlet respectively, and the sealing plug is sheathed on the sealing frame and located below the air outlet; the upper end of the rack valve rod is connected to the sealing frame, and the upper end of the rack valve rod penetrates through a locating round hole of the movement bracket; the rack part of the rack valve rod is engaged with the gear set in the motor chamber through threads, and the worm is fixed to an output shaft of the micromotor; and the gear set is rotatably connected to the rotary output end of the micromotor through the worm. According to the special built-in valve, an in-place sliding structure is adopted, and has a buffer effect on blockage instantaneous current; at the same time, the valve volume is reduced to adapt to smaller gas meters; and a pressure relief structure with a sealing effect on the motor chamber is formed through interference fit between an isolation pad and the valve rod.

The transformer protection device comprises a box body, mounting frames are fixedly connected to the two sides of the bottom of the box body correspondingly, mounting holes are formed in the front sides and the rear sides of the bottoms of the mounting frames correspondingly, a box door is movably connected to the front side of the right side of an inner cavity of the box body, and a movable shellis movably connected to the inner cavity of the box body. According to the invention, the box body is arranged, box door and mounting rack, elbow and first fan, a top cover, a baffle, a shell, a second fan, a box body, a frame, a fixed shell, a movable shell, a mounting plate, a second filter screen, an illuminating lamp, a crank, a support, a movable block, a turntable, a mounting hole, a through groove, a first opening, a rotating rod, a driving bevel gear, a second opening, a threaded sleeve, a threaded rod, a bearing sleeve, a driven bevel gear, a limiting plate; the problem that an existing transformer protection device is poor in protection effect, so that the service life of a transformer is shortened is solved.

The invention relates to the technical field of electric wires and cables and specifically relates to a tensile shielding insulating cable for a charging pile. The cable includes a core cladding groupand a control core cladding group. The core cladding group is formed by stranding three cores in the shape of a triangle. The outer part of the core cladding group is covered with a first shielding layer and each core includes a conductor and an inner insulating layer wrapping the outer part of each conductor. The control wire core cladding group is composed of a control wire core and a second shielding layer wrapping the control wire core. The first shielding layer and the control wire core cladding group are both wrapped with an outer insulating layer. The outer insulating layer is externally connected with and wrapped with an armor layer. A gap between the outer insulating layer and the armor layer is also filled with a flame retardant filler, and the armor layer is wrapped with an abrasion-resistant protective sleeve. The invention solves a problem that the service life of a charging pile cable, which is frequently pulled and rolled in the use process, is shortened due to the poortensile capacity and mechanical performance of an existing charging pile.

The invention discloses an advertisement putting device, which relates to the technical field of advertisement, and comprises a connecting frame and a cover plate which are detachably connected, and further comprises a moving mechanism, a fixing mechanism; the heat dissipation mechanism comprises heat dissipation holes, an air cooling assembly, a water cooling assembly and a shielding assembly; a protective glass; and a scrubbing mechanism. The connecting frame is driven to move through the moving mechanism, the advertisement display screen is fixed through the fixing mechanism, the advertisement display screen is placed in the connecting frame through the cover plate, pedestrians watch advertisements through protective glass, the display screen is subjected to air cooling heat dissipation through the air cooling assembly, and when it rains, the shielding assembly shields heat dissipation holes, so that the advertisement display screen is prevented from being damaged. And external water vapor is prevented from entering the connecting frame, a water cooling assembly conducts water cooling heat dissipation on the display screen, a scrubbing mechanism scrubs the protective glass, and the problems that most existing advertisement putting devices are exposed outside, the heat dissipation effect is poor, and the service life of the advertisement display screen is shortened are solved.

The invention discloses an anti-corrosion reinforcing structure for a column. The column comprises concrete and main steel bars arranged in the concrete. Joint mixture releasing blocks are arranged in the concrete of the column and internally provided with cavities, and joint mixtures are packaged in the cavities. When cracks appear in the column, the joint mixture releasing blocks crack, and the cracks are filled with the joint mixtures. By means of the anti-corrosion reinforcing structure, the problem that the service life of a column is shortened due to the fact that internal steel bars are corroded easily after cracks appear in the reinforced concrete column in the prior art is effectively solved; the anti-corrosion reinforcing structure has an automatic crack filling function after cracks appear in the column, meanwhile, the possibility of crack occurrence in the column is greatly lowered through the reinforcing structure, and therefore the service life of the column is greatly prolonged; and the anti-corrosion reinforcing structure has high practical value.

The invention provides an inserting rod of a window cleaning machine. The inserting rod comprises a supporting pillar and a cantilever which is arranged at the upper end of the supporting pillar, and further comprises an inclined support, wherein a triangular structure is defined by the inclined support, the cantilever and the upper part of the supporting pillar; a fixed stand is arranged on the lower part of the supporting pillar; rotary rollers are arranged on the fixed stand; a rotary disc is welded on the peripheral side of the supporting pillar; the rotary rollers are used for supporting the rotary disc in the radial direction of the rotary disc; rolling bearings are arranged at the bottom of the supporting pillar for supporting the supporting pillar in a longitudinal direction; and both the cantilever and the supporting pillar are rectangular pipes. Since all rotary positions are in the form of the rolling bearings and since the cantilever and the supporting pillar are rectangular pipes, the operation convenience is greatly improved, and meanwhile equipment weight is greatly reduced and cost is reduced.

The invention provides a computer coaxial dual-oar automatic dedusting cooling fan. The cooling fan comprises a dual-shaft motor, a cooling shaft, spiral blades, connecting rods, a shaft cover, a reducer, a brush, a supporting rod, a dedusting disc and a driving shaft, the cooling shaft is assembled at the upper end surface of the dual-shaft motor, the shaft cover is assembled at the upper end surface of the cooling shaft, the spiral blades are arranged at the outer surface of the cooling shaft, the left ends of the connecting rods are fixed to the upper end of the inner surface of an installation cylinder, and the right ends of the connecting rods are fixed to the upper end surface of the shaft cover. Through the design, the problem that an original cooling fan is poor in cooling effect is solved, the reducer is assembled at the lower end surface of the dual-shaft motor, the upper end of the driving shaft is assembled inside the reducer, the lower end of the driving shaft is fixed to the upper end surface of the dedusting disc, the left end of the supporting rod is installed at the outer surface of the dedusting disc, and the brush is assembled at the right end of the supporting rod. The problem that the service life of the original cooling fan is shortened since the cooling fan is often dismantled to remove dust is solved. The computer coaxial dual-oar automatic dedusting cooling fan is compact in structure, good in cooling effect, excellent in dedusting effect, and long in service life.

The invention provides a primary-secondary smelting furnace. The primary-secondary smelting furnace is characterized in that the furnace comprises a base; a plurality of smelting furnace bodies are arranged on the base; the smelting furnace bodies include one primary smelting furnace body and multiple secondary smelting furnace assemblies; a primary smelting furnace mounting groove is reserved inthe base, and the primary smelting furnace body is mounted in the primary smelting furnace mounting groove; the multiple secondary smelting furnace assemblies are uniformly distributed on the base around the outer profile of the primary smelting furnace body; each secondary smelting furnace assembly comprises a secondary smelting furnace base, a secondary smelting furnace body and a driving cylinder; the secondary smelting furnace bases are hinged to the surface of the base; the secondary smelting furnace bodies are fixed to the surfaces of the secondary smelting furnace bases correspondingly,and push rods of the driving cylinders are connected to the bottoms of the secondary smelting furnace bodies correspondingly; the secondary smelting furnace bodies can overturn above the periphery ofthe primary smelting furnace body relative to the base; and a drainage groove which is inclined relative to the surface of the base is formed between each secondary smelting furnace body and the primary smelting furnace body. The primary-secondary smelting furnace has the advantages of efficient smelting, high production efficiency and labor reduction.

The invention discloses a vibration-isolating bridge, which includes a base, two piers and two first clamping blocks are arranged above the base, Between that two bridge pier are two said first card blocks, supporting blocks are arranged inside the two piers, A shock absorber is arranged above the two supporting blocks, two fixing blocks and a first damping spring are arranged inside the two shockabsorbers, two first damping springs are respectively positioned between two fixed blocks, A card slot is provided, first block, the bayonet and the second bayonet, A card slot is arranged on the first card block and the second card block, The inside of the clamping slot is clamped with the clamping column. When the pier cracks need to be repaired or replaced, the operator can clamp the clampingcolumn in the clamping slot through the external equipment, thus playing the role of strengthening the bridge, preventing the bridge from collapsing accidentally, and solving the problem that the bridge collapse will cause personal safety to the operator when the operator changes the pier.

The invention discloses a preparation method of a PVC advertisement film capable of resisting ageing. The specific preparation method of the PVC advertisement film comprises the following steps: adding PVC, a plastifier, a stabilizing agent, calcium carbonate and zeolite to a reaction kettle, performing stirring and mixing for the first time to obtain a premix, reduction the temperature, then adding antimony trioxide, titanium dioxide and epoxy soybean oil to the premix, performing stirring and mixing for the second time to obtain a mixture, sequentially performing banburying, plasticizing androlling shaping on the mixture to obtain a preformed body, and sequentially performing leading and taking, embossing, cooling and reeling on the preformed body so as to obtain the PVC advertisement film. The ageing resistance of the PVC advertisement film is improved, the service life of the PVC advertisement film is prolonged, and the endurance and the effect of advertising are increased.

The invention provides a hydraulically-driven hydrogen compressor, and relates to the field of compressors. The hydraulically-driven hydrogen compressor comprises a gas path and an oil path. The low-pressure hydrogen pipeline comprises a low-pressure hydrogen pipe orifice, a hydrogen pipeline ball valve, an air inlet pipeline pneumatic valve, a pre-compression cooler, a first-stage piston compression cylinder body, a first-stage cooling assembly, a second-stage piston compression cylinder body, a second-stage cooling assembly, an exhaust pipeline pneumatic valve and an exhaust pipe orifice which are sequentially connected in series; the oil way comprises an oil tank, a motor, an electric pump set and a three-valve set. The motor is connected with the electric pump set; an oil inlet of the electric pump set is communicated with the oil tank, and an oil outlet of the electric pump set is communicated with oil inlets of the first-stage piston compression cylinder body and the second-stage piston compression cylinder body through the three-valve set. Oil outlets of the first-stage piston compression cylinder body and the second-stage piston compression cylinder body are respectively communicated with an oil tank through a three-valve group; the technical problem that the service life of an existing electrically-driven hydrogen compressor is shortened due to frequent starting and stopping can be solved, and the hydrogen output pressure is stable.

The invention provides an inserting rod slewing mechanism of a window cleaning machine. The inserting rod slewing mechanism comprises a strut and a cantilever which is arranged at the upper end of the strut, and further comprises an inclined support, wherein a triangular structure is constituted by the inclined support, the cantilever and the upper part of the strut; a fixed stand is arranged on the lower part of the strut; a circle of rotating rollers are arranged on the fixed stand; a rotary tray is welded on the periphery of the strut; the rotary tray is supported by the rotating rollers in the radial direction of the rotary tray; and a rolling bearing is arranged at the bottom of the strut for supporting the strut in a longitudinal direction. The inserting rod slewing mechanism disclosed by the invention, through the adoption of the rolling bearing on all rotating positions, can greatly enhance the convenience of operation.