521results about How to "Prevent falling off" patented technology

The invention relates to a fast rail-exchanging vehicle for a jointless track and a rail-exchanging method. The front and back ends of a travel mechanism of a fast rail-exchanging vehicle for a railway are provided with a guardrail recovering device; a crosstie-pressing device, a steel rail retraction device for clamping and moving a new steel rail and an old steel rail, a steel rail clincher and an operating position are arranged at intervals below the vehicle body between two bogies of the travel mechanism, the operating position is arranged according to the need; and the crosstie-pressing device and the steel rail clincher are arranged respectively close to the bogies at the two ends; and the vehicle can perform the marshalling operation together with the auxiliary vehicles, such as a fastener recovered vehicle, and the like. When the fast rail-exchanging vehicle for the railway is adopted for construction, the operation is divided into two parts of the old steel rail retraction operation and the new steel rail retraction operation which are synchronously carried out. The vehicle can reach the rail-exchanging speed of more than 2km/h, can be applied to the fast rail-exchanging need of the jointless track, complete the rail exchanging within 50 meters and is suitable for the construction needs of the section with less curve radius. The invention has the advantages of safety and high degree of automation.

The invention relates to a railway construction machine guard rail hoisting device and a rail replacing locomotive guard rail hoisting device, comprising a guard rail hoisting apparatus and an anti-loosing device, wherein the guard rail hoisting apparatus is arranged below a railway construction machine, such as a rail replacing operation vehicle traveling mechanism vehicle body and can integrally lift and transversely move a railway construction machine vehicle body, and the anti-loosing device is arranged on each steering frame of a steel rail traveling machine to enable the steering frames and the vehicle body to be vertically fixed into a whole. The guard rail hoisting apparatus comprises an elongated supporting body, a guard rail suspension bracket and a control device, wherein the supporting body is fixedly suspended below the vehicle body through the guard rail suspension bracket, the control device is used for controlling the movement of the supporting body, a guard rail assembly is respectively arranged at both ends below the supporting body, the control device comprises two telescopic guard rail vertical oil cylinders and telescopic guard rail integral swinging oil cylinders, and the guard rail suspension bracket is provided with two downward stretching struts which are respectively hinged with both ends of the supporting body through two guard rail support rods. The invention enables a railway which needs to be born but is not completely fixed to be kept in an upright state in the construction process, farthest prevents the occurrence of a turning-way accident, and also enables the turning-way railway construction machine to rapidly hoist and safely reset.

The invention discloses a preparation method of a low self-discharge nickel-metal hydride battery. The preparation method comprises steps as follows: preparation of a semi-finished product of a positive pole, preparation of a semi-finished product of a negative pole, preparation of glue for soaking bottom ends of the positive pole and the negative pole, soaking, electrolyte preparation, assembly and the like. According to the preparation method of the low self-discharge nickel-metal hydride battery, a positive pole substrate adopts foamed nickel, positive pole substances comprise a spherical nickel hydroxide active substance, a conductive agent, a bonding agent and an additive, the additive comprises cobalt monoxide and cobaltous hydroxide, the electrolyte is ternary electrolyte comprising potassium hydroxide, sodium hydroxide and lithium hydroxide, and further, a positive plate adopts a bottom gumming technology and diaphragm paper for a bottom welding technology during a manufacturing process, so that positive powder is prevented from falling to the bottom of a steel shell and is contacted with the negative pole, and self-discharge of the battery is reduced; and the test proves that the electrical charge retention rate of the battery prepared with the preparation method can still be higher than 88% after stored for two years at the normal temperature of 25 DEG C.

The invention provides an anti-slippage composite base material boiler body outer surface polishing and grinding machine. The anti-slippage composite base material boiler body outer surface polishingand grinding machine comprises a polishing mechanism and a clamping mechanism. Supporting columns are arranged on the outer side of the polishing mechanism. Polishing rack fixing bases are arranged atthe upper ends of the supporting columns an integral forming manner. The polishing rack fixing bases are in bolt connection to the tail ends of polishing racks through fastening bolts. Polishing wheel shafts are fixedly connected to the front ends of the polishing racks. The front ends of the polishing wheel shafts are fixedly connected with polishing wheels. Stable plates are arranged at the lower ends of the supporting columns and internally fixedly connected with sliding wheels. The sliding wheels are in sliding connection into sliding grooves, and the sliding grooves are in a circular ring shape and are fixedly formed outside the clamping mechanism. A containing plate is arranged at the upper end of the clamping mechanism, each of the four side edges of the containing plate is fixedlyconnected with a spring buckle, and a vacuum suction pipe is arranged in the middle of the containing plate. According to the anti-slippage composite base material boiler body outer surface polishingand grinding machine, the angle of the polishing racks can be adjusted, the polishing wheels can face the surfaces of boiler bodies different in height for grinding along the surfaces of the boiler bodies, polishing is more comprehensive and more thorough, the anti-slippage composite base material boiler body outer surface polishing and grinding machine can adapt to polishing of the boiler bodiesdifferent in height, and usage is more convenient.

The invention provides a method for manufacturing a flexible substrate. The method includes that a bearing substrate is provided; a photosensitive adhesive layer is formed on the bearing substrate; a flexible substrate is arranged on the photosensitive adhesive layer, the flexible substrate includes an active area and an inactive area; the photosensitive adhesive layer comprises a first area and a second area, the photosensitive adhesive in the first area in the photosensitive adhesive layer is light-cured and the photosensitive adhesive in the second area remains uncured; a component is formed on the flexible substrate, the orthographic projection of the inactive area of the flexible substrate on the bearing substrate covers the orthographic projection of the first area of the photosensitive adhesive layer on the bearing substrate, the orthogonal projection of the second area of the photosensitive adhesive layer on the bearing substrate covers the orthogonal projection of the active area of the flexible substrate on the bearing substrate; the bearing substrate is cut along the boundary between the inactive area and the active area such that the inactive area and the active area are separated; and the bearing substrate in the active area is separated from the flexible substrate. The method can effectively reduce the peel strength between the flexible substrate and the bearing substrate.

The invention discloses a method for restoring vegetation on high and steep slopes by the aid of coiled plant materials. The method includes operation steps of 1), cleaning slope surfaces; 2), constructing anchor rods; 3), hanging nets; 4), laying the coiled plant materials; 5), secondarily hanging nets; 6), fixing the nets and the coiled plant materials; 7), watering and maintaining the slope surfaces. The method has the advantages that the stability of substrates on the slope surfaces can be effectively maintained, the substrates are high in erosion resistance, construction processes are simple, the vegetation can be managed and maintained easily and conveniently in later periods, the slope surfaces can be effectively closed, and weathering and peeling of the slope surfaces can be prevented.