42results about How to "Reduce replacement and repair costs" patented technology

The present invention relates to a wind turbine enabling a cost effective and easy attachment/replacement of rotor blades and to a method of attaching a rotor blade to a hub of a wind turbine. The wind turbine in accordance with the invention comprises a tower resting on a base, at least one rotor blade having a blade connector portion, a nacelle housing a shaft to which a hub is attached, the nacelle being mounted atop the tower. Said hub of the wind turbine comprises a plurality of hub connection flanges, each hub connection flange being adapted to be detachably connected to a blade connector portion of a rotor blade.

The invention discloses an LED screen dead pixel monitoring and early warning method and system. The method comprises the following steps: a. setting the standard characteristic value of the dead pixel amount of a target LED display screen; b. detecting the display data of each pixel point of the target LED display screen; c. according to the display data, calculating the practical characteristic value of the dead pixel amount; d. comparing the practical characteristic value with the standard characteristic value; when the practical characteristic value is more than the standard characteristic value, outputting a comparison result; and e. according to the comparison result, generating early warning signal data, and giving out early warning. The system is correspondingly provided with a detection unit, a control unit, an early warning unit and a regulation unit. When the practical characteristic value of the dead pixel amount of the target LED display screen exceeds the preset standard characteristic value, the invention gives out early warning so as to ensure lower replacement difficulty and lower replacement and maintenance cost.

A picnic table system is provided that is modular in design for ease of storage out of inclement weather when not in use. A bench assembly sits atop two pedestal-type legs and the table top and is supported by the upper portion of the pedestal legs. Both the top and the benches are secured by frictional impingement. When the invention is to be moved, the bench assembly, table top and the two pedestal legs are stored in a manner conserving floor or storage space. The ability to store the invention inside during inclement weather or during off season allows for increased life of the invention, thus saving the user replacement or repair costs as well.

The invention relates to the field of automobile manufacturing, in particular to the field of automobile accessory manufacturing, and particularly relates to a brake block steel sheet and a friction layer used in cooperation with the brake block steel sheet. According to the novel brake block steel sheet and the friction layer used in cooperation with the brake block steel sheet, the braking stability is guaranteed, and maintaining and replacing cost of the brake block can be reduced. According to the brake block steel sheet with a rectangular groove and the friction layer used in cooperation with the brake block steel sheet and provided with a protruding ridge, one steel sheet can be matched with a plurality of friction layers, and maintaining and replacing cost of the brake block is reduced while the braking effect is not affected.

The invention discloses a contraposition spiral short screw extruder. The contraposition spiral short screw extruder comprises a first melt conveying passage and a second melt conveying passage which are oppositely arranged; the first melt conveying passage is formed by a first conveying mechanism; the second melt conveying passage is formed by a second conveying mechanism; the first conveying mechanism comprises a first machine barrel (1), a first screw (2) and a first right baffle plate (21); the second conveying mechanism comprises a second machine barrel (4), a second screw (7) and a second right baffle plate (23); the first conveying mechanism and the second conveying mechanism are arranged on the two sides of a gear case (11) coaxially and oppositely; the contraposition spiral short screw extruder further comprises a sleeve (3) which is fixedly arranged between the first right baffle plate (21) and the second right baffle plate (23); the sleeve (3) is internally provided with a material mixing screw (8) and an injection screw (9) in a rotary match manner; and communication holes are formed in positions, corresponding to the screw body central hole tail ends of the first screw (2) and the second screw (7), of the sleeve (3). According to the contraposition spiral short screw extruder, on the premise that the length of the screws is not increased, the small extruder capable of double material inputting is designed, and the plasticizing efficiency is improved.

The invention discloses household kitchen garbage treatment equipment. The household kitchen garbage treatment equipment comprises a box body, a first frame body, a second frame body, a storage box, afirst stirring mechanism, and multiple second stirring mechanisms, wherein the first stirring mechanism comprises a first cylinder, a second cylinder, a first screw rod and multiple sets of stirringmodules. The household kitchen garbage treatment equipment can thoroughly crush household kitchen garbage in time and smoothly discharge the household kitchen garbage into a sewer, and is simple in structure, easy to operate and higher in economical practicability.

The invention discloses a locating pin of a hot-forming drawing mould. The locating pin comprises a bullet head, wherein a cylindrical structure is arranged below the bullet head; a disassembly hole is formed in the cylindrical structure; a turnover tapered step is arranged below the disassembly hole; the lower portion of the turnover tapered step is equipped with threads through a cylindrical transition area; and an inner hexagonal structure is arranged at the bottommost side of the locating pin. In a production process of the hot-forming drawing mould, a mechanical hand clamps and conveys a plate to a position above the hot-forming drawing mould, and the plate is located through a locating process hole preset in the plate; error correcting area is increased through the bullet head, so that introduction precision is improved; then, the error correcting area is further increased through the turnover tapered step, so that introduction precision is improved again while high precision is provided for next-time locating; and the disassembly hole and the inner hexagonal structure are conveniently dismounted, so that efficiency is improved.

The invention discloses a kitchen waste treatment system. The kitchen waste treatment system comprises a box body, a material charge hopper, a material charge mechanism, a suction filtration mechanism, a crushing mechanism and a material discharge mechanism, wherein the material charge mechanism comprises a first cylinder body, a second cylinder body, a first screw rod and a plurality of groups ofmaterial discharge assemblies; the suction filtration mechanism comprises a material storage box, a liquid storage box and a first pipe body; the crushing mechanism comprises a first rotary body anda second rotary body; the material discharge mechanism comprises a material discharge box and a plurality of stirring assemblies. The kitchen waste treatment system has the advantages that the kitchenwaste can be timely and thoroughly crushed, and be smoothly discharged via a sewer, and the blockage accident of the sewer is prohibited; the structure is simple, the manufacturing cost is lower, theconsumption level of more users can be met, and the economy and practicality are higher.

The invention belongs to the technical field of gearboxes, and discloses a bearing protection structure and a wind power gearbox. The bearing protection structure comprises a first oil return structure, a second oil return structure and an oil deflector ring, wherein the first oil return structure is used for injecting lubricating oil to a spline transmission structure and communicating with an oil tank; the second oil return structure is used for injecting lubricating oil to a spline shaft bearing and communicating with the oil tank; and the oil deflector ring is arranged between the first oil return structure and the second oil return structure, and can isolate the first oil return structure and the second oil return structure from each other. The first oil return structure is arranged,the spline transmission structure can be lubricated and cooled, and solid particles and heat generated by abrasion can be taken away, so that the solid particles are prevented from causing continuousdamage to the spline surface. The first oil return structure and the second oil return structure are isolated from each other through the oil deflector ring, the situation that the spline shaft bearing is damaged or even fails due to the fact that the lubricating oil with the solid particles flows into the spline shaft bearing is avoided, replacement and maintenance costs are reduced, and the service life of the spline shaft bearing is prolonged.

The invention provides a control valve and a cam phase adjuster oil way system. The control valve comprises a valve shell and a piston, an axial sliding fit structure is formed between the piston andthe valve shell, a drainage channel is formed in the valve shell, a drainage cavity is formed in the inlet end of the valve shell, one end of the drainage channel is communicated with the outer side of the circumference of the valve shell, and the other end of the drainage channel is communicated with the drainage cavity; the cam phase adjuster oil way system comprises a rotor, a cam shaft and a control valve as described above, the piston slides relative to the valve shell, an oil inlet, an drainage channel, a medium guide channel, an input interface and a flow guide oil channel are communicated in sequence to form an oil inlet flow channel, and the flow guide oil channel is communicated with the first work interface or is communicated with the second work interface. According to the control valve, the pressure oil guide part in a traditional cam phase adjuster oil way system can be omitted, the replacement and maintenance cost and the quality risk of an oil way system of the cam phase adjuster are reduced, the outstanding advantages of simplifying the overall structure of an oil way system and reducing the cost are achieved.

A picnic table system is provided that is modular in design for ease of storage out of inclement weather when not in use. A bench assembly sits atop two pedestal-type legs and the top and is supported by the upper portion of the pedestal legs. Both the top and the benches are secured with the use of pegs to form a sturdy structure. When the invention is to be moved, stored for the season, or otherwise not needed, the pegs are simply removed and the resultant four pieces, namely the top, the bench assembly, and the two pedestal legs are stored in an upright, on-end fashion, thus conserving floor or storage space. The ability to store the invention inside during inclement weather or during off season allows for increased life of the invention, thus saving the user replacement or repair costs as well. The use of a modular picnic table of the present design provides a firm, stable picnic table area that can be easily disassembled and assembled in a manner which is quick, easy and efficient

The invention discloses a rotary active explosion venting mechanism, and belongs to the technical field of buffering damping devices for reducing explosion pressure in safety devices. In the mechanism, a fixed explosion venting impeller is arranged at the middle part of an explosion venting barrel. An angle motor fixedly connected to the fixed explosion venting impeller drives a rotation shaft torotate. A high-temperature-resisting bearing sleeving the rotation shaft is connected with the fixed explosion venting impeller. An explosion venting rotation impeller is fastened to the tail end of the rotation shaft through a fastening nut, a nut gasket and a bearing sleeve. A limiting sensor is arranged on the inner wall of the explosion venting barrel to detect the position and the rotation angle of the explosion venting rotation impeller. According to the rotary active explosion venting mechanism, an explosion venting channel can be rapidly opened and closed according to the detection result, symmetrically-distributed flame quenching holes are formed in the outer wall of the tail end of the explosion venting barrel, flames near an explosion venting port are reduced, explosion ventingpressure releasing is buffered, and damage to explosion venting equipment from secondary explosion is avoided. The rotary active explosion venting mechanism has the beneficial effects of being high inexecuting efficiency and safety, and the replacing and maintaining cost is reduced.

The invention discloses a detachable hoe device for gardens. The detachable hoe device for the gardens comprises a hoe blade and a connecting handle body, a connecting sleeve part is fixedly arrangedon the right end of the hoe blade, the left portion of the connecting handle body is inserted into the connecting sleeve part in a sleeved mode, the left portion of the connecting handle body is fixedly connected to the connecting sleeve part through a fixing bolt, external connecting threads are formed on the outer side wall of the right portion of the connecting handle body, an extending handlebody is located on the right portion of the connecting handle body, an inserting hole is formed in the middle of the left end of the extending handle body, a screw joint hole is formed in the right end face of the inserting hole, and the right end of the connecting handle body is in screw joint in the screw joint hole. According to the detachable hoe device for the gardens, the hoe blade and the connecting handle body can be separated, only the hoe blade needs to be replaced when the hoe blade of the detachable hoe device is damaged, the replacement and maintenance cost is low, meanwhile, theconnecting handle body can be connected with the extending handle body according to needs, and therefore the application range of the detachable hoe device is widened.

The invention discloses a wave compensation cylinder with an in-built check valve. The wave compensation cylinder comprises an end cover, a cylinder barrel and a cylinder bottom; the cylinder bottom is provided with a hydraulic oil cavity and a buffer sleeve; a rod-free cavity is formed in the cylinder barrel; two oil channels are formed outside the circumference of the buffer sleeve; each oil channel is divided into a narrow oil channel which is communicated with the hydraulic oil cavity and a wide oil channel communicated with the rod-free cavity; and the check valve which can assist in starting the cylinder is arranged in the wide oil channel. The check valve consists of a steel ball and a spring which are arranged at the bottom of the wide oil channel sequentially, and a nut which is in thread fit with the wide oil channel; one end of the spring is pressed against the nut, and the other end of the spring is pressed against the steel ball; the diameter of the steel ball is larger than the inner diameter of the narrow oil channel; and a through hole is formed in the middle of the nut. In the wave compensation cylinder with the in-built check valve, a way valve is adopted, the occupied space is small, and when placed in the cylinder, the way valve can be prevented from being exposed, and hardly rusts.

A power amplifier protection circuit disclosed by the present invention comprises a power amplifier circuit, a loudspeaker circuit, a detection circuit, a control protection circuit and a switching circuit, the output end of the power amplifier circuit is connected with the input end of the detection circuit and the input end of the switching circuit, and the output end of the detection circuit is connected with the input end of the control protection circuit. The output end of the switching circuit is connected with the input end of the loudspeaker circuit, and the output end of the control protection circuit is connected with the control end of the switching circuit. The circuit is simple in structure and high in safety.

The invention discloses a wear-resistant belt material composition, and a wear-resistant belt and a preparation method thereof. The composition comprises styrene-butadiene rubber, nitrile-butadiene rubber, a coumarone indene resin, nano calcium carbonate, nano calcium oxide, paraffin, silicone oil and sulfur. Relative to 100 parts by weight of the styrene-butadiene rubber, the content of the nitrile-butadiene rubber is 30-60 parts by weight, the content of the coumarone indene resin is 10-30 parts by weight, the content of the nano calcium carbonate is 1-5 parts by weight, the content of the nano calcium oxide is 1-5 parts by weight, the content of the paraffin is 3-10 parts by weight, the content of the silicone oil is 5-15 parts by weight, and the content of the sulfur is 2-6 parts by weight. Through the design, the effects of effectively resisting wear, greatly lowering the replacement cost and use cost and enhancing the production efficiency are realized.

The invention discloses a disassembling clamping apparatus for a valve core of a steam intake valve. The disassembling clamping apparatus comprises a center rod, a fixed flange and a valve core spanner, wherein the center rod comprises a head structure, a center screw rod and a tail structure; the head structure and the tail structure are separately positioned at two ends of the center screw rod; the center screw rod is in thread connection to the fixed flange; the head structure and the tail structure are separately positioned on two sides of the fixed flange; the fixed flange is detachably connected with the steam intake valve; the valve core spanner is detachably fixed on the tail structure of the center rod. The disassembling clamping apparatus disclosed by the invention solves the difficult problem that after the valve core of the steam intake valve is damaged, the valve core is locked up and is not liable to disassemble; the maintenance efficiency of the valve is improved; the replacement and maintenance cost of the steam intake valve is reduced. In addition, the disassembling clamping apparatus disclosed by the invention is simple in structure, convenient to manufacture, and low in manufacturing cost, and components which are easy to damage can be replaced.