32results about How to "Avoid direct contact wear" patented technology

The invention belongs to the field of geotechnical engineering, and in particular relates to a compression-shear testing apparatus for a rock in a dry-wet cyclic process. The apparatus comprises an angle-variable compression-shear unit, and a compression machine for vertically applying load onto the angle-variable compression-shear unit; the apparatus also comprises a reservoir, water injection equipment for carrying out moisture saturation treatment on a rock sample in the angle-variable compression-shear unit, and heating equipment for carrying out hot-gas drying treatment on the rock sample in the angle-variable compression-shear unit. The angle-variable compression-shear unit is located in the reservoir, and the reservoir is communicated with the water injection equipment and the heating equipment. By adopting the compression-shear testing apparatus, the integration of rock sample dry-wet cyclic treatment and a shear test is realized, and the apparatus has the advantages of simple structure, convenient operation, low cost, wide application range and long service life; the rock samples in different states after different dry-wet cyclic times can be accurately simulated, shear test research is carried out on the rock samples, and moreover, failure load and displacement of the rock samples in the vertical direction in the shear test process can be recorded in real time.

The invention discloses a marine ranching dike netting gear component assembly method, wherein a double-layer fiber net, a medium-soft connection net and a woven net are used. The marine ranching dike netting gear component assembly method is characterized in that an upper margin line of the woven net and a lower line of the double-layer fiber net are bound and tightened with a single fast knot through a sixteen-strand polyester woven rope with the diameter of 4.6mm and are spaced by 5cm; next, a lower line of the medium-soft connection net and a connecting steel cable on the woven net are bound and tightened with a single fast knot through a sixteen-strand polyester woven rope with the diameter of 4.6mm and are spaced by 5cm; then, an upper line of the medium-soft connection net and a connecting net line on the double-layer fiber net are bound and tightened with a single fast knot through a sixteen-strand polyester woven rope with the diameter of 4.6mm and are spaced by 5cm; after an upper line of the double-layer fiber net, the upper line of the medium-soft connection net, the lower line of the medium-soft connection net, a lower margin line of the woven net and the double-layer fiber net are subjected to anti-dirt treatment, a large-mesh ultra-high molecular weight polyethylene warp knitting net is directly bound, connected and fixed to a marine ranching dike netting gear pile.

A linkage braking railway vehicle wheel stopper comprises a body and a linkage braking device, the linkage braking device is clamped in the body, the body is pressed to drive the linkage braking device to brake, the linkage braking device comprises a pressure bearing assembly, and the pressure bearing assembly is provided with a linkage assembly in a linkage mode. The pressure-bearing assembly ispressed to move longitudinally to drive the linkage assembly to move transversely. Through the arrangement of the structure, the stability and safety of the wheel stopper are improved, the operation difficulty is reduced, the installation and disinstallation process is simplified, and the working time is shortened.

The invention relates to a device in the technical field of rubber cutting machines, in particular to an adjustable rubber cutter. The rubber cutter comprises a first support, a second support, a transmission device, a control device, a base, pressure rod devices, a workbench, worms, a worm gear, a rubber cutting mould and a mould adjusting base plate, the first support and the second support are arranged symmetrically, the transmission device and the control device are symmetrically arranged on the first support and the second support, and the base, the pressure rod devices, the workbench, the worms, the worm gear, the rubber cutting mould and the mould adjusting base plate are arranged between the first support and the second support. The lower ends of the pressure rod devices are arranged on the base, and the upper ends of the pressure rod devices are fixed to the lower surface of the workbench. The worms are connected through two connecting holes protruding out of the upper surface of the workbench. The worms and the worm gear are matched to be connected through threads. The upper surface of the worm gear is fixed to the lower surface of the mould adjusting base plate, and the worm gear and the workbench form a rotating pair through a bearing arranged in the center of the workbench. The lower end of the rubber cutting mould is clamped in a groove in the upper surface of the mould adjusting base plate.

The invention discloses an anti-seizing and anti-loosening glue for stainless steel threaded connection and a preparation method thereof. The preparation method comprises the following steps: adding olefine esters into a reaction kettle, adding BPO dibenzoyl peroxide, stirring and dissolving, and then heating till the viscose of the product is increased, continuing heating for ageing and cooling to room temperature, thereby acquiring a white transparent olefine ester copolymer; adding acetone and stirring, thereby acquiring a PMM solution in concentration of 20%; taking the PMM solution, adding silicone grease and stirring, and then adding coupling reagent, cyanoacrylate and epoxy resin and uniformly stirring, thereby acquiring a PMMA bonding solution; mixing the PMMA bonding solution and an organic amine solvent at ratio, thereby acquiring the glue. An organic polymer silicate film is formed between the threads by the organic silicide contained in the glue, the direct contact and abrasion of the threads can be prevented and the anti-seizing purpose can be achieved. The mixture of methacrylate and acrylics contained in the glue has an excellent bonding characteristic and can prevent the bolt from loosening.

The invention relates to a soft connecting method for coasts and large-scale aquaculture netting. The method is characterized by including: the antifouling ultra-high molecular weight polyethylene netting is made through warp knitting; a reinforced concrete pile is disposed on each of the left coast and the right coast; a standing reinforced concrete pile is disposed at the joint of each coast and the netting, and a vertical lacing line for hanging the netting is disposed on each standing reinforced concrete pile; one end of each of a left coast soft connecting netting horizontal lacing line and a right coast soft connecting netting horizontal lacing line is connected with the corresponding reinforced concrete pile, the other end each of a left coast soft connecting netting horizontal lacing line and a right coast soft connecting netting horizontal lacing line is fixedly tied to the corresponding standing reinforced concrete pile, and each of a left coast soft connecting netting vertical lacing line and a right coast soft connecting netting vertical lacing line is fixedly tied to the corresponding vertical lacing line, for hanging the netting, of the corresponding standing reinforced concrete pile; the left coast soft connecting netting and the right coast soft connecting netting are connected between the reinforced concrete piles; a reinforced concrete weir is poured between the standing reinforced concrete piles, and net hanging horizontal lacing lines are disposed on the surface of the weir; the edge lacing lines of the netting are fixedly tied to the vertical lacing lines, for hanging the netting, of the standing reinforced concrete piles, the lower lacing lines of the netting are fixedly tied to the net hanging horizontal lacing lines, and the floater lacing lines of the netting are fixedly tied to the standing reinforced concrete piles.

The invention relates to an assembly type prefabricated stair hoisting hanger, which consists of an angle steel bracket, a steel wire rope, a basket screw and a hoisting point connecting piece, the angle steel bracket adopts angle steel to be welded into a rectangular structure, the length and the welding size of the angle steel are determined according to the lifting point position of the prefabricated stair, and four corners of the angle steel bracket are drilled; the upper end of the steel wire rope is connected with the lifting hook, and the lower end of the steel wire rope penetrates through a hole in the angle steel support and then is connected with the upper end of the turnbuckle, and the lower end of the turnbuckle is connected with the lifting point connecting piece through the steel wire rope. The turn buckle screw is composed of round steel, steel sleeves and a screw, the two ends of the round steel are welded to the two steel sleeves, the welding interval angle of the round steel is 120 degrees, the screw penetrates through the steel sleeves at the two ends, one end of the screw is welded to a round hanging ring, the hanging rings at the two ends of the turn buckle screw are connected with the steel wire rope, and the screw penetrating through the steel sleeves at the two ends is turned in a positive and negative mode. The hanging bracket can ensure that the prefabricated staircase can be accurately positioned and quickly mounted in the hoisting process, and mounting deflection and deviation are avoided.