20 results about "Breaking force" patented technology

The utility model relates to the technical field of breaking force testing clamps, in particular to a buckle type breaking force clamp which comprises a test board, a lower clamp and an upper clamp, the lower clamp is placed on the upper surface of the test board, an object containing groove is formed in the upper surface of the lower clamp, a lower fixing block is arranged on one side of the object containing groove, and a lower moving block is arranged on the other side of the object containing groove. One ends of the lower moving blocks are jointly connected with a first sliding block, a first lead screw is arranged on one side of the lower clamp, an upper fixing block is arranged on the lower surface of the upper clamp, a second sliding block is connected into the upper clamp in a sliding mode, the second sliding block is fixedly connected with an upper moving block, a filling block is arranged between the upper fixing block and the upper moving block, and a second lead screw is connected to one side of the second sliding block in a threaded screwing mode. By arranging the adjustable lower clamp and the adjustable upper clamp, the width of the storage groove can be flexibly adjusted so as to adapt to the widths of LED supports of different models, the whole clamp does not need to be frequently replaced, the number of clamps needing to be arranged is reduced, and the clamp arrangement cost is reduced.

The invention discloses an anti-rebound strong-breaking high-voltage direct-current relay, and the relay comprises a static assembly which is disposed in a relay housing, is used for forming a static conductive and magnetic circuit foundation of the relay, provides a second section of counterforce in the pull-in process of the relay, inhibits the pull-in rebound of a contact, and assists in enhancing the breaking force during breaking. And the movable assembly is arranged in the relay shell and is used for realizing dynamic on-off actions of the contacts. According to the invention, the three-section counter-force design is optimized and combined with the tower-shaped spring, so that the collision energy and bounce of the movable contact can be reduced, the arc generation and the component loss are reduced, and the bonding risk is reduced; breaking force is provided through the synergistic effect of the main spring, the counter-force spring and the magnetic steel, the contact can be assisted to be rapidly separated, and therefore fusion welding is overcome, arc extinguishing is accelerated, and contact damage is reduced. Through the magnetic steel directional polarity and closed magnetic circuit design, the magnetic field intensity can be enhanced, the pull-in response time can be shortened, and the magnetic leakage can be reduced, so that the pull-in force and the holding force can be enhanced, and the contact looseness can be avoided.

The invention discloses a tool wear rule model construction method. The invention relates to the field of shield cutter wear rule research, and solves the problems that an existing method is complex in model construction, is easily interfered by working condition fluctuation in practical application, and is insufficient in prediction stability. The method comprises the following steps: acquiring wear loss data of a tool changing point of a practical engineering tool, and establishing a practical engineering wear rule model by using a K-means clustering and quadratic fitting method; based on a CSM model of approximate constant-section hob rock breaking force and a Rabinowicz abrasive wear equation, a theoretical model of a wear rule is established; establishing a blade yield strength change model for the blade yield strength in the theoretical model; and the blade width change model and the blade yield strength change model are added into the theoretical model to obtain a corrected tool wear rule model, and the model can provide accurate data support for tool replacement cycle planning in shield tunneling construction.

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 present invention provides a finite element-based testing device and method for the breaking force of a tire bead wire ring. The device comprises an annular mold and a bead wire ring cross-section acting force extractor; the outer surface of the annular mold is provided with a mold groove, and the mold groove is used for accommodating a bead wire ring; the inner surface of the annular mold is provided with a load surface, and the load surface is used for expanding the annular mold to apply a breaking force to the bead wire ring; the bead wire ring cross-section acting force extractor is used for reading the acting force on a cross-section of the bead wire ring and testing the breaking force of the bead wire ring. In the present invention, the annular mold is expanded to apply an acting force to a bead wire ring, to simulate service conditions of the bead wire ring and more accurately evaluate the breaking force of the bead wire ring; by applying annular expansion displacement fields to the bottom surface of the annular mold and imposing displacement constraints on the annular mold, deviation of the annular mold is restricted.

A tire (1) for a mine engineering vehicle comprises two protective layers (31) having elastic metal reinforcements, the modulus of extension of which is at least 40 GPa and at most 140 GPa, and two working layers. The breaking force FR of the metal reinforcements of the radially outermost protective layer (311) is at least 2500 N, their pitches, in mm, being greater than 0.70 * FR / 1000 where FR is in N. The metal reinforcements of the radially outermost protective layer (311) form an angle APN with a circumferential direction (XX ') tangential to the circumference of the tire, the absolute value of the angle APN being at least 45°.

The utility model discloses a paste fixing device and a breaking force detection device. The paste fixing device comprises a first end part fixing structure, a second end part fixing structure and a probe moving channel, the first end part fixing structure and the second end part fixing structure are arranged at an interval in a first direction, the first end part fixing structure is used for fixing one end of a to-be-detected paste body, and the second end part fixing structure is used for fixing the other end of the to-be-detected paste body, so that the to-be-detected paste body is erected between the first end part fixing structure and the second end part fixing structure; a probe moving channel extending in the second direction is arranged between the first end part fixing structure and the second end part fixing structure, and the two ends of the probe moving channel in the first direction are correspondingly communicated with the first end part fixing structure and the second end part fixing structure respectively; the first direction is perpendicular to the second direction. According to the paste fixing device, more stable breaking force data with smaller fluctuation can be obtained by changing the fixing mode of the paste.

The utility model relates to connecting rod expansion breaking equipment which comprises a base, a pressing mechanism, a moving mechanism, a movable and fixed sleeve and a pull rod, before the connecting rod expansion breaking process, the large end of a connecting rod is arranged on the periphery of the movable and fixed sleeve in a sleeved mode, the pressing mechanism abuts against bolt supporting faces on the two sides of the large end of the connecting rod, and at least part of the pull rod penetrates into the movable and fixed sleeve. The pull rod is provided with a first abutting face facing the moving mechanism, the movable and fixed sleeve is provided with a second abutting face, and when the connecting rod is fractured, force applied by the first abutting face to the second abutting face can drive part of the fractured connecting rod to drive the moving mechanism to move relative to the base. The moving direction is the same as the force applying direction of the first abutting face to the second abutting face and the force applying direction of the pressing mechanism to the connecting rod, the situation that most of the force borne by the expansion breaking end of the connecting rod and the force applied by the pressing mechanism to the connecting rod are mutually counteracted is avoided, and therefore the effective expansion breaking force is improved; and therefore, chippings generated due to the unsmooth expansion breaking process are reduced, and the product quality of expansion breaking of the connecting rod is effectively improved.

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 relates to the technical field of building material detection, and discloses a tension test device for building material detection, which comprises a test cabinet and a protective cover fixedly arranged in the test cabinet, and is characterized in that firstly, two ends of a building material to be tested are respectively fixedly clamped at the lower end of a threaded rod and the upper end of a placement block through clamping assemblies; after the building materials are clamped and fixed, a motor can drive a threaded rod to rotate, a clamping assembly at the lower end of the threaded rod is driven to move upwards, and along with rotation of the threaded rod, the motor can move upwards along fixing plates on the two sides through a connecting plate; the clamping assembly at the lower end of the threaded rod cannot cause upward bouncing of the device due to sudden disappearance of force at the lower end, when the tension test device for building material detection is actually used, tension detection can be performed on a building material through rotation of the threaded rod, and when the test material reaches a critical point and is suddenly broken, the device is not prone to bouncing. And displacement of the whole device caused by tensile strength is avoided.

The invention relates to a cable system for securing a floating platform to an underwater attachment point, wherein: the cable system is composed of an inner cable and an outer sheath cable designed as a sheath; the inner cable is formed of synthetic textile fibres; the sheath cable is braided from synthetic textile fibres; the inner cable is arranged in a tubular interior of the sheath cable; the inner cable has a first breaking force; and the sheath cable has a second breaking force which is greater than the first breaking force.

To provide an improved cutting and breaking method suitable for scribing hard materials such as SiC, even at relatively large thicknesses, and particularly for breaking materials with a metallized layer, especially one having a metallized layer with a thickness between approximately 0.5 and 5 μm. [Solution] A method for breaking a substantially planar workpiece having first and second main surfaces, with a metallized layer on the first main surface, i) A step of forming a groove in a workpiece that extends parallel to a plane, the groove being open on the upper surface of the workpiece, and subsequently ii) Applying a workpiece breaking force to the first main surface of the workpiece to split the workpiece along a fracture line that coincides with a groove, and then iii) A step of applying a metallic fracture force to the second main surface of the workpiece to fracture the metallized layer along the fracture line, Includes.

The invention relates to a high-tension low-relaxation tungsten tendon rope for a dexterous hand and a preparation process of the high-tension low-relaxation tungsten tendon rope for the dexterous hand. The process comprises the following steps: a) mixing high-purity tungsten powder and nano lanthanum oxide powder, and sintering after cold isostatic pressing to obtain a compact blank strip; b) carrying out hot rotary swaging on the blank strip to obtain a rod material, and repeatedly carrying out single-pass drawing at 800-1000 DEG C until the wire diameter is 0.5 mm; then multi-pass drawing is conducted at the temperature of 600-800 DEG C to obtain thin wires with the required diameter; c) according to the designed monofilament specification combination, differential pretension is applied to the different-diameter filaments, and the pretension is the filament diameter D * 30 (+ / -0.2) N; d) stranding and rope combining: adopting a 7 * 7 composite structure; e) heat setting; and f) drying the tendon rope after ultrasonic cleaning. According to the tendon rope, the lanthanum oxide doped tungsten filaments serve as the monofilaments, the 7 * 7 composite structure is adopted, and the prepared tendon rope has the high breaking force, the low stress relaxation rate and the good bending fatigue life by precisely regulating and controlling technological parameters.

This invention discloses a method for constructing a tool wear law model. This invention relates to the field of shield tunneling tool wear law research, addressing the problems of existing methods having complex model construction, susceptibility to fluctuations in working conditions during practical applications, and insufficient predictive stability. This invention obtains actual engineering tool wear data at tool replacement points, and uses K-means clustering and quadratic fitting to establish an actual engineering wear law model; based on the CSM model of rock-breaking force of approximately constant cross-section roller cutters and the Rabinowicz abrasive wear equation, a theoretical model of the wear law is established; for the blade yield strength in the theoretical model, a blade yield strength variation model is established; the blade width variation model and the blade yield strength variation model are added to the theoretical model to obtain a corrected tool wear law model. This model can provide accurate data support for tool replacement cycle planning in shield tunneling construction.

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.

The invention belongs to the technical field of steel wire ropes, and particularly relates to a large-diameter five-layer-strand rotation-resistant steel wire rope and a manufacturing method thereof.The five-layer-strand dense arrangement structure is adopted, a reverse one-time online twisting technology is combined, under the set equipment condition, the number of strand layers is increased, the strand diameter is reduced, the rope containing amount is remarkably increased, and therefore the large-diameter five-layer-strand rotation-resistant steel wire rope is manufactured. The manufacturing bottleneck of the super-long steel wire rope is successfully broken through; through close arrangement and staggered design of a plurality of stranded ropes and cooperation with a uniform surface contact strand structure, the overall flexibility is enhanced while ultrahigh breaking force is achieved; and a multi-layer moment balance system is constructed through the opposite twisting directions of the strands of the adjacent layers and a one-time synchronous twisting process, so that the rotation resistance performance of the steel wire rope is fundamentally improved, and the steel wire rope can meet the comprehensive extreme requirements of long size, high strength, rotation resistance and high durability of high-end maritime work equipment such as deep-sea pipe laying and offshore hoisting.