10 results about "Dead weight" patented technology

The invention discloses a method for preparing an insulator. The method comprises the following steps of: a, preparing a three-dimensional framework which has a shape matched with that of the insulator by using a glass fiber bundle, wherein glass fiber cloth is coated on the surface of the framework and is soaked with epoxy resin; b, when the epoxy resin starts to solidify, uniformly coating resin containing ceramic powder or glass powder on the surface of the framework, and putting the framework into an insulator mold; and d, raising the temperature, sizing, solidifying and then demoulding to obtain the insulator. According to the integrated insulator prepared by the method, a process of sleeving umbrella skirts on core rods of the insulator sequentially one by one is eliminated, and labor power is saved; and the insulator prepared by the process has low dead weight, a high electrical property and a high mechanical property. Both a hollow insulator and a solid insulator which are prepared by the process have a high electrical property, a high mechanical property and low dead weight. The insulator is suitable for outdoor high-voltage power transmission lines.

The invention discloses a method for reducing unevenness of composite stainless steel plates in manufacturing composite steel plates. The method is characterized in that a plurality of composite stainless steel plates are stacked up with support members among the composite stainless steel plates, needle punched cotton is filled on the upside and the underside of the support members, base plates of the composite stainless steel plates face down, the support members for supporting the composite stainless steel plates move inwards, edges of the composite stainless steel plates are sagged by heat treatment at the temperature of 800-1070 DEG C by virtue of dead weight of the composite stainless steel plates, and the edges of the composite stainless steel plates upwarp for prespringing after being taking out from a heat treatment furnace and cooled, thus reducing transverse unevenness after the heat treatment. The distance from the outer side edge of a support member to the long edge of a composite stainless steel plate is 300-400mm. The method reduces the unevenness of the heat treated composite stainless steel plates, flattening is easy, and the appearance quality is easy to meet technical indexes and user requirements.

The invention relates to the technical field of container casing machining machinery, in particular to an edge spinning machine driving a container casing to rotate. The edge spinning machine comprises a frame, a lifting device, an operation platform, a machine head, an edge spinning device, a container holding and conveying device and a trusteeship device, wherein the lifting device is arranged at the upper portion of the frame, and the operation platform is arranged at the lower end of the lifting device. The machine head is arranged on the operation platform of the edge spinning machine vertically and comprises an installation frame, a cylinder, a motor, a spindle seat, a spindle, an expansion core, an expansion body sliding seat, an expansion body mould and a transmission gear. The machine head of the edge spinning machine is arranged on the operation platform perpendicularly through the spindle seat and the installation frame. The cylinder pushes the expansion core to move downwards to enable the expansion body mould to clamp a bucket tightly to spin the bucket. Due to the fact that the machine head and the bucket are perpendicular to each other, position offset caused by dead weight is avoided. The bucket can be clamped tightly by the expansion body mould capable of clamping the bucket tightly, accordingly, machining precision is ensured, and machining deviation is reduced.

The invention discloses a casement window structure in a unit curtain wall. The structure comprises a curtain wall body, curtain wall glass and side window body component, wherein the side window body component is arranged on a side wall hole between the end part of the curtain wall glass and the curtain wall body. The casement window structure in the unit curtain wall is combined with the characteristics of factory processing, quality controllability and strong integrity of the unit type curtain wall, and uses the curtain wall shaping characteristics for designing the casement structure in the side wall hole of the curtain wall; the casement uses a mold opening profile for replacing a traditional structure of double frames and embedded glass, so that the used material types are largely reduced, and the processing procedures are reduced; and the dead weight of the glass is about 4-5 times of the weight of the aluminum frame, so that the dead weight of the window body is largely reduced, the load on hardware is reduced, the service life of opening hardware is prolonged, and the user opening and closing operations are easy and free.

A pipe fitting rotating device comprises a rotating seat, a blind rivet, a positioning rod, a fixing seat, a fixing pipe and a rotating pipe. The pipe fitting rotating device is characterized in that the rotating pipe is fixedly connected to the rotating seat through the positioning rod; the fixing seat is fixedly connected to the fixing pipe through the blind rivet and is mounted into the rotating seat; a limited rotating angle is set through a limiting arm on the fixing seat and a fixing tenon on the rotating seat; in addition, a positioning hole is matched with a spherical clamping column to prevent gyrating under the dead weight condition. The pipe fitting rotating device is simple in structure, convenient to operate, and suitably used as a rotating device of products such as furniture.

The invention discloses a spiral hollow brick screen design structure which comprises a plurality of hollow brick bodies, a screen body, a connecting plate and a limiting piece, the hollow brick bodies are connected to the connecting plate, and each hollow brick body is provided with a plurality of fixing grooves, a plurality of hollow holes, an upper spiral groove, a left spiral groove, a lower spiral protruding block and a right spiral protruding block. A plurality of spiral holes and a plurality of fixing holes are formed in the connecting plate, the limiting piece comprises an upper threaded head, a lower threaded head, a connecting rod and a limiting plate, the lower threaded head penetrates through the hollow hole to be connected into the spiral hole, the limiting plate is connected to the connecting rod and abuts against the interior of the fixing groove, a fixing plate is arranged on the screen body, the limiting piece is sleeved with the fixing plate, and the screen body is fixedly connected with the screen body. And the fixing nut is screwed on the upper thread head. The hollow brick bodies are high in stability, convenient to install and easy to detach, the hollow brick can be adjusted at any time according to site requirements, the limiting pieces are connected with the connecting plates through the hollow holes of the hollow brick, and deformation of the limiting pieces caused by the dead weight influence of the hollow brick is avoided.

The invention discloses a barrel foundation capable of sinking through blasting and a using method thereof. The barrel foundation comprises a steel portion, a concrete portion and explosive installation holes. In use, a blasting scheme is made first, then land fabrication and explosive filling are conducted, the explosive installation holes are numbered and grouped in sequence according to the blasting scheme, the device is transferred to an installation site, a first set of explosive is detonated after the device is stabilized according to the blasting scheme to enable the device to sink under the action of its own dead weight after blasting, a second set of explosive is detonated after sinking becomes stable so that the device can sink again under the action of its own dead weight after blasting, and the operation is repeated till all explosive is detonated or the barrel foundation sinks to a specified depth. In this way, the marine barrel foundation can be placed and made to sink through blasting, the defect of the negative-pressure sinking technique or positive-pressure sinking technique that operation is affected by sea conditions greatly is overcome, the whole installation process can be controlled and regulated, offshore construction cost can be reduced, and offshore construction time can be shortened.

The invention discloses a reaction kettle which comprises a kettle body hollow inside and perpendicular to the floor, a motor arranged on the kettle body, and a revolving shaft extending into the kettle body and driven to rotate by the motor. The revolving shaft is perpendicular to the floor and provided with two propellers; the kettle body is provided with a material inlet and a material outlet.The two propellers have opposite propelling directions, the diameter of vane diameter of the propeller arranged above is greater than that of the propeller arranged below. The two opposite propeller structures form an upper-and-lower double-layer circulating vortex structure, collision is generated in the middle of the kettle body, and thus full mixing is achieved. Besides, the propeller above hasbig vanes, which can provide higher thrust to balance dead weight of the revolving shaft so as to reduce abrasion loss of bearings.