33 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 present invention provides a method for manufacturing blades with a cutting edge from glass by subjecting a strip glass to a controlled breaking force. Before breaking the glass is scored to create a line of weakness at which the break is made. The glass is broken by striking the glass with a breaking force that causes the glass on either side of the score line to pivot away from one another. This controlled breaking of the glass strip creates a broken off portion of glass that has a sharp cutting edge. The present invention also provides an apparatus that creates glass blades in accordance with the method.

The process for improving the transverse breaking force of wrapping film belongs to the technical field of wrapping film and is prepared by a film blowing method and comprises the following steps: S1. preparing and weighing raw materials of different layers of ABCBA according to a proportion, uniformly mixing the raw materials to obtain raw materials of different film layers; S2. pouring the raw materials of different film layers into corresponding feeding machines of different extrusion layers, melt plasticizing, and co-extruding into a tubular die via a five-layer die; S3. blowing and shaping the tubular die, a blowing ratio of 2.3-2.5, and a longitudinal traction ratio of 1.9-2.1; S4. after cooling, traction and winding, and placing at 25-28 DEG C for 4-8 h, a finished wrapping film is obtained. The application enables the molecular chain to be fully stretched and oriented in the transverse direction by designing a blowing ratio of 2.3-2.5 and a traction ratio of 1.9-2.1, while inhibiting excessive orientation in the longitudinal direction, so that the mechanical properties are more balanced; and the application enhances the overall transverse breaking force of the wrapping film by cooperating with a five-layer structure component enhancement system, thereby improving the tear resistance of the film and preventing the film from being easily torn during the packaging process.

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 present application relates to the field of exhaust pressure relief of closed space and device, and particularly relates to a tensile type pressure relief exhaust cover structure, which comprises a blasting tensile screw rod, a nut, a gasket, a cross support frame, a fence base, a device shell, a sealing gasket, an exhaust cover plate, a screw plug, a swing arm, a rotating shaft and a support, the fence base is arranged on the device shell, the exhaust cover plate is arranged on one side of the fence base and is used for closing the device shell, the blasting tensile screw rod is used as a locking piece and a trigger breaking piece of the exhaust cover plate, the blasting tensile screw rod is controlled in the tensile breaking time by the tensile strength limit of the middle diameter reducing section, when the internal pressure of the device is increased and is converted into the axial tension of the blasting tensile screw rod through the exhaust cover plate, the blasting tensile screw rod can be broken at the diameter reducing section when the preset breaking force is reached, the breaking force and the corresponding pressure relief pressure value can be accurately set by adjusting the cross section area of the diameter reducing section, and the opening pressure control precision is good.

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.

This invention relates to a soluble bridge plug for casing-modified wells. The soluble bridge plug includes a soluble ball, a release ring, a central tube, slips, a rubber sleeve, and a guide shoe. The setting sleeve pushes the slips, guide block, slips, cone, extension body, secondary cone, rubber sleeve, and back ring downwards. The extension body expands radially under force, and the rubber sleeve and back ring expand radially as they descend, sealing the annulus between the central tube and the casing. When the starting force of the slips ring is reached, the slips expand radially. When the slips move to the outer diameter of the cone, they continue to move radially through the expanded outer cone surface of the extension until they bite into the inner wall of the casing, forming a self-locking mechanism. When the force generated by the setting tool reaches the thread breaking force of the release ring, the setting tool disengages from the bridge plug, completing the setting process. When fracturing of the producing layer above the bridge plug is required, the soluble ball is placed into the cone hole of the central tube, sealed, and then fracturing is performed. After fracturing, the soluble ball will dissolve under certain conditions, forming a full-bore channel inside the casing.

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 application relates to the field of steel cord detection equipment, in particular to a steel cord welding point breaking force manual detection device, which comprises a workbench, a positioning sliding rail, a sliding buckle plate, a bearing box, a tension meter, a first clamping jaw, a connecting strip plate, a second clamping jaw, a supporting vertical plate, a positioning long box, a recording plate, a limiting tooth, two symmetrical sliding mark pens arranged in the bearing box and a locking plug plate, a power mechanism for driving the bearing box to move and a brake mechanism for limiting the movement of the bearing box, the power mechanism is provided with a pulling output end, the pulling output end is connected with the bearing box, the brake mechanism is provided with a transverse output end, the transverse output end is used for driving the locking plug plate and the mark pen to extend or retract, and the first clamping jaw and the second clamping jaw are used for clamping a steel cord body. The device can quickly realize the breaking force detection of the steel cord welding point and improve the detection efficiency.

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.

The present application relates to a kind of connectors, connector includes the insulator provided with the wire barrel hole for wire barrel to pass in, the insulator is provided with through passage, through passage intersects with the wire barrel hole, the through passage is for wire screw to pass in and penetrates the barrel wall of wire barrel to be pressed into the conductor in wire barrel, the insulator is provided with axial stop portion, axial stop portion corresponds with the through passage, axial stop portion is used to be stopped with the wire screw along the axial stop cooperation of wire screw, to prevent the wire screw from being outwardly extruded through passage along its axial direction. By setting axial stop portion, it can prevent wire screw from retreating from wire barrel and completely exiting insulator, so as to cause wire screw to fall off and lose, when using, as long as the force applied on wire screw does not exceed the breaking force that axial stop portion can bear, axial stop portion is not damaged, and wire screw will not be extruded from connector.

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.

The application discloses a TBM cutter three-direction rock breaking force prediction method and system based on a rotary cutting mode, and comprises the following steps: a hyperbolic function model of a cutter edge width and a penetration depth is established, and a cutter geometric structure is optimized to adapt to different rock layers; an effective contact radius and a contact angle are calculated through a coupling motion trajectory equation of a cutter revolution and rotation; a pressure distribution coefficient is fitted in combination with pre-test data, a Hertz-Weibull stress coupling analysis model is constructed, and a cutting direction and a radial stress distribution are accurately characterized; based on contact pressure integration and force decomposition, explicit calculation formulas of vertical, rolling and lateral rock breaking forces are derived, respectively, and a cutter head speed, a pushing pressure and a cutter spacing are dynamically adjusted according to rock breaking force prediction results. The application significantly improves the rock breaking force prediction accuracy in complex rock layers, optimizes the TBM construction efficiency and the cutter life, reduces the overbreak risk and energy consumption, and is suitable for intelligent tunneling control in tunnel engineering.

The application relates to the technical field of micro-filament drawing, in particular to a dynamic adjustment method and device for high-speed drawing force of micro-filaments, which are applied to a dynamic adjustment system for high-speed drawing force of micro-filaments, based on a pressure sensor, real-time measurement of drawing resistance generated by a drawing unit in the process of reducing the diameter of a wire, and based on a force sensor, real-time measurement of counter-tension of the wire in the transmission process; dynamic adjustment of the current measured counter-tension is carried out according to an established counter-tension regulation strategy; wherein the counter-tension regulation strategy comprises a first relational expression for limiting counter-tension utilization rate, and a second relational expression for representing the mapping relationship between the drawing force and the breaking force of the wire after the diameter reduction by the drawing unit. Thus, in the high-speed drawing process, the drawing force of the wire is always maintained in a stable state, effectively reducing the problems of wire breakage, surface quality defects and die wear, improving the production efficiency and the finished product quality of the micro-filaments, and prolonging the service life of the die.

The invention relates to a real-time detection device and an adjustment method for the pay-off tension of a weaving spindle, and belongs to the technical field of weaving equipment control. The tension detection mechanism and the control device are installed on the weaving spindle and rotate together with the weaving spindle, and yarn tension is detected in real time through wireless transmission between the tension detection mechanism and the control device and the control box; and through the arrangement of the brake assembly and the cooperation of the hollow stand column, the brake shaft, the brake compression spring and other structure pairs, the brake tension can be changed. The problems that the yarn pay-off tension is not uniform and the breaking force of the braided rope is not enough are solved, operation only needs to be carried out on the touch screen, manual operation is reduced, and great convenience is achieved.

The invention relates to the technical field of material mechanical property testing, and provides a hook type snapping detection device and method for the welding performance of an extruded profile, and the method comprises the following steps: clamping two symmetrically arranged hooks on an upper clamp and a lower clamp respectively; controlling the testing machine to start so as to carry out a tensile test on the to-be-tested extruded section square tube; recording the maximum tensile strength value and the fracture position when the extruded section bar square tube to be tested is fractured; and evaluating the welding quality of the welding part of the extruded section bar square tube to be detected according to the maximum breaking force value and the fracture position parameter. The tensile load can be ensured to uniformly act on the welding area, the welding strength is convenient to quantify, and a welding line strength evaluation standard is convenient to establish.

The invention relates to the technical field of prestressed steel strands, in particular to a high-temperature-resistant low-relaxation steel wire rod for a prestressed steel strand and a preparation method and application of the high-temperature-resistant low-relaxation steel wire rod. Through the synergistic effect of fine and dense sorbite structures obtained through the V and Nb synergistic microalloying design and the two-section type controlled cooling process, the high-temperature dislocation movement is effectively inhibited through pinning dislocation and grain boundaries, and the high dislocation density is kept through structure refinement; the stress relaxation rate of a steel strand obtained by adopting the steel wire rod prepared by the invention is less than or equal to 2.5% and the tensile strength is greater than or equal to 1860MPa after 70% breaking force is loaded for 1000 hours in an environment of 40 DEG C, so that the synergistic improvement of high-temperature low relaxation and high strength is realized.

The invention belongs to the technical field of detection tests, and particularly relates to a test device and method for breaking tension of a steel cable with a ball head, and the device comprises a protection cover, an upper end rectangular clamping handle, and a connecting piece. A steel ball groove for placing a steel cable ball head is formed in the protective cover; the upper end rectangular clamping handle is arranged at the upper end of the protective cover and is used for connecting an upper chuck of the electronic tensile machine; the lower end of the protective cover is an independent connecting piece used for connecting the end of the steel cable with a lower chuck of the electronic drawing machine.