8 results about "Breaking force" patented technology

The invention relates to an ultrathin chemically tempered glass article having a thickness of less than or equal to 0.4 mm. In order to improve sharp object contact resistance, the glass article has a rupture force (given in N) greater than 30 times the thickness (t) of the glass article (t given in mm). Further, the glass article has a fracture bending radius (given in mm) less than 100,000 multiplied by the thickness (t) of the glass article (t given in mm) divided by the value of surface compressive stress (in MPa) at the first surface.

The utility model relates to the technical field of breaking force testing device, especially steel wire rope breaking force testing device, its realization is to the clamping and winding double fixed effect of steel wire rope, improves the fixed convenience and reliability of steel wire rope end part, including first guide piece and clamping piece, wherein every two groups clamping piece are respectively slidably installed on a group of first guide piece, still include moving device, drive arrangement, supporting device, base, moving seat and first hydraulic cylinder, two groups moving seat are installed on the base through moving device, two groups first guide piece are respectively rotatably installed on two groups moving seat, and driving arrangement is arranged on two groups moving seat, and driving arrangement is used for driving the rotation of two groups first guide piece, first hydraulic cylinder is installed on the outer side wall of two groups first guide piece, and the moving end of first hydraulic cylinder is connected with the outer side wall of clamping piece, and supporting device is set up on the base, and supporting device is used for pushing the middle part of steel wire rope upwards.

The present specification discloses a kind of mining spherical step anchor device, which is the equipment for anchoring prestressed anchor cable, suitable for Ф21.8mm 1860MPa grade roadway support steel strand, compact structure, anchoring is reliable.The anchor device is mainly composed of anchor ring and three pieces of bevel type working clamping piece, the anchor ring has spherical end face, cooperates with tray with spherical groove, outer side is equipped with arc stepped skirt, the inner side of working clamping piece has inner tooth, and anchoring is realized by the positive pressure extrusion of anchor ring inner taper hole and clamping piece outer taper.Its static load anchoring efficiency coefficient is greater than or equal to 95%, the total elongation of assembly part is greater than or equal to 2.0%, anchor mouth friction loss is less than 6%, can withstand 2 million times of cyclic load, when installing, use mining anchor cable tensioning machine, tensioning force is 50%-60% of steel strand breaking force or according to the provisions, must not be reused and mixed with other manufacturers' products.

The utility model discloses a reciprocating type window breaker, which mainly comprises a shell provided with an installation cavity, a top shell provided in the installation cavity and capable of reciprocating sliding along the inner cavity wall, a cross-shaped ejector pin and a main spring and a return spring provided between the top shell and the installation cavity. The utility model can produce ≥150N instantaneous impact force through the cooperation of the cross-shaped ejector pin and the main spring, and can form continuous impact on the coated glass and thick tempered glass through the design of the reciprocating sliding top shell, thereby effectively solving the problem of difficult breaking of the traditional window breaker in one strike. Meanwhile, the linkage structure of the driving groove and the supporting rod can reduce the influence of water resistance when working in water, ensure the stability of the window breaking force, and greatly shorten the window breaking time.

A method for manufacturing a controllable constant-resistance deformation anchor includes the following steps: S1, selecting a length of L and a breaking force of F according to the current application scenario. b S1. An anchor body with an outer diameter of R1; S2. A constant pressure deformation sleeve is sleeved on the outside of the anchor body; and the radial load-bearing capacity of the constant pressure deformation sleeve is N, and N < F. b S3. A lock is installed at one end of the anchor body, and the constant pressure deformation sleeve is moved to contact the lock. S4. A ball pad is inserted through the end of the anchor body away from the lock, with the inner diameter of the ball pad at the end away from the lock being R2 and the inner diameter at the end near the lock being R3. The two inner diameters are smoothly transitioned by a guide slope with an angle of α. The constant pressure deformation sleeve has a chamfered surface corresponding to the guide slope. The radial force of the constant pressure deformation sleeve is N, and N < the narrowing force P. S5. A tray is inserted through the end of the anchor body away from the lock, and the tray contacts the end of the ball pad away from the lock. The deformation of the constant pressure deformation sleeve can be controlled under controllable conditions.

The utility model belongs to power transmission technical field provides an overhead insulated conductor that promotes the force of pulling apart, include: steel core layer, steel core layer is located in the wire center position, steel core layer is used to bear axial tension, steel core layer outside is provided with inner lining layer, a plurality of isolation layers are provided in inner lining layer, the electric core is provided in isolation layer inside, the electric core is used for transmission power, the electric core outside is wrapped with insulating layer, the inner lining layer inside is provided with the filling layer, the inner lining layer outside is wrapped with steel wire layer, the utility model discloses through steel core layer adds steel wire layer and carbon fiber reinforced layer three -level enhancement system, has constructed the efficient mechanical bearing path, has promoted the overall pulling apart force and the fatigue resistance of wire greatly, the central steel core layer adopts two high -strength copper alloy line spiral winding and is formed, not only has the tensile strength that far exceeds ordinary aluminium material, still because copper alloy excellent ductility and fatigue resistance characteristic, can effectively absorb and disperse dynamic stress.