85 results about "Rotational shear" patented technology

According to the continuous self-adaptive integral sliding mode leader-following multi-robot affine formation control method based on the event triggering mechanism, distributed control and affine formation strategies are fused, a formation controller with high maneuverability and high robustness is constructed, the event triggering mechanism is introduced to reduce the communication load and the control frequency, and the control efficiency is improved. The method belongs to the technical field of multi-robot intelligent cooperative control. Aiming at the common problem of insufficient formation rigidity and flexibility in a multi-robot formation control task, the invention provides a cooperative control method capable of realizing various affine transformations such as zooming, rotating, shearing, coplanar and collinear, and the cooperative control method has good environmental adaptability and system performance.

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

A process for forming extruded products using a device having a scroll face configured to apply a rotational shearing force and an axial extrusion force to the same preselected location on material wherein a combination of the rotational shearing force and the axial extrusion force upon the same location cause a portion of the material to plasticize, flow and recombine in desired configurations. This process provides for a significant number of advantages and industrial applications, including but not limited to extruding tubes used for vehicle components with 50 to 100 percent greater ductility and energy absorption over conventional extrusion technologies, while dramatically reducing manufacturing costs.

The invention relates to the technical field of plastic recycling and production, and discloses a plastic recycling and granulating device for production, which comprises a pre-tightening driven mechanism and a strip-shaped shaping head, an extrusion forming hole capable of carrying out extrusion forming on flowing molten plastic and an annular cooling cavity which is arranged on the periphery of the extrusion forming hole and can store cooling liquid are formed in the extrusion forming hole. According to the plastic recycling and granulating device for production, molten plastic is cooled and shaped into strips, the strip-shaped plastic is cut into particles under the action of the rotary tool bit, and the plastic is cut after being cooled and shaped, so that the plastic recycling and granulating device has the characteristics of strong cutting effect and high yield; according to the device, the rotary tool bit can abut against the end of the discharge port in a pre-tightening mode, so that higher rotary shearing force is achieved, and the quality of particulate matter finished products is further improved.

The invention discloses a dynamic real-time measurement method and device for the friction coefficient in a rotary shear type granular material, and belongs to the technical field of granular material measurement. The dynamic real-time measurement device for the friction coefficient in the rotary shear type granular material comprises a rotary shear rheological experiment cavity which is connected to a bottom plate through a mounting bracket; the filler is filled with a to-be-detected granular material; the normal load monitoring unit comprises an upper pressure sensor and a lower pressure sensor which are located on the upper portion and the lower portion of the rotary shear rheological experiment cavity, in-situ real-time measurement of the internal friction coefficient of the granular material in the shear flowing process is achieved, and the technical problem that the internal friction characteristic of the granular material is difficult to measure through a traditional method is solved. A cooperative working mechanism of an axial constraint type dynamic loading platform, an annular medium distribution structure and a rotary shear rheological experiment cavity is innovatively designed, shear flow in the granular material is achieved, and the internal friction coefficient of the granular material is measured.

The invention provides a stator machining device. The stator machining device comprises a machine table; the first positioning mechanism is provided with a first shearing area, and the first shearing area is used for positioning an end line in an end line area of the stator; the radial shearing mechanism is used for shearing the end part line of the first shearing area along the radial direction of the stator; the second positioning mechanism is provided with a second shearing area, and the second shearing area is used for positioning an end wire and a lead in a lead area of the stator; the rotary shearing mechanism is used for shearing the lead wire and the end part wire of the second shearing area; and the carrying mechanism is used for carrying the stator from the first positioning mechanism to the second positioning mechanism, and the carrying mechanism is installed on the machine table. According to the stator processing device provided by the embodiment of the invention, the radial shearing mechanism and the rotary shearing mechanism are adopted, so that interference caused by different shearing lengths and positions of the end part wire and the lead wire is avoided, automatic cutting of the end part wire and the lead wire can be realized, and the shearing operation of the end part wire and the lead wire of the stator is compatible; and the automation degree of stator processing is improved.

The invention provides an underflow concentration self-adaptive tailing thickening device and method based on deep learning, and relates to the technical field of paste filling. The device comprises a material conveying and distributing system, a thickener main body device, a material mixing and homogenizing system and a data integration and control system, the material conveying and distributing system conveys materials to the material mixing and homogenizing system, the materials enter the thickener main body device after being uniformly stirred, and the materials are collected into a material collecting pool after being subjected to the rotary shearing action of a rake frame; discharging the materials which meet the requirements, and returning the materials which do not meet the requirements to the cylinder of the thickener from the circulating tank; and the data integration and control system monitors and dynamically regulates and controls the slurry concentration in real time. According to the method, the stability of the underflow concentration, personalized concentration prediction and accurate regulation and control are realized, the technical bottleneck of continuous thickening of all tailings is overcome, reliable technical support is provided for a paste filling process, and reference is provided for introducing an intelligent solution to an industrial thickener.

The invention relates to a steering system for controlling a vehicle, using a steer-by-wire concept, comprising a control element, a steering shaft (3), an electric motor (6) and a continuously adjustable magnetorheological powder brake (5) influencing the rotation of the steering shaft (3), which comprises two components rotatable relative to each other about an axis of rotation, a stator (8) with associated coil (14) and, spaced apart therefrom, a rotor (9) connected to the steering shaft (3), wherein at least one rotating shear gap (16) at least partially filled with a magnetorheological medium is provided between the rotor (9) and the stator (8), and the rotor (9) is rotatably mounted via at least one powder brake bearing (10) positioned separately from the steering shaft (3) and connected to the stator (8), and the steering shaft (3) is connected to the rotor (9) via an elastic coupling element (13).

The utility model discloses an anti-sediment cosmetic emulsification reaction kettle which comprises a bearing frame and a reaction kettle body, the reaction kettle body is arranged above the bearing frame, movable shafts are arranged at the two ends of the reaction kettle body, and the reaction kettle body is movably connected with the bearing frame through the movable shafts. A driving seat is installed on the outer wall of the bearing frame, the movable shafts extend into the driving seat and are movably connected with the driving seat, a driving motor is installed at the bottom end of the driving seat, a worm is installed at the output end of the driving motor and is movably connected with the driving seat, and the surface of the movable shaft on one side of the worm is sleeved with a worm wheel. The worm is meshed with the worm gear, and a material opening is formed in the outer wall of the reaction kettle body. According to the utility model, liquid materials can be conveniently and rotationally sheared and circumferentially stirred, the two liquid materials can be conveniently and uniformly dissolved, and the dispersion and dissolution speed of the liquid phase and the emulsion reaction effect are improved.

The invention provides a screw extruder for plasticizing plastic particles, which belongs to the technical field of plastic regeneration extrusion equipment and comprises a base, a driving unit, a charging barrel and a screw. Wherein the charging barrel is provided with a plurality of fixing pipes in the axial direction, piston pipes capable of sliding in the radial direction of the screw rod are arranged in the fixing pipes, telescopic holes corresponding to the piston pipes are formed in the charging barrel, and shearing grooves corresponding to the piston pipes are formed in the screw rod; and an air pressure cavity is formed in the end, away from the screw rod, of the fixing pipe. The piston pipe capable of extending into the screw pitch of the screw rod is arranged on the charging barrel, air pressure control is utilized, the pressure is increased, the piston pipe extends into the screw pitch of the screw rod, plastic is sheared along with rotation of the screw rod, the piston pipe can improve the radial shearing effect of the plastic in the conveying process, and plasticization of the plastic is more uniform.

The utility model discloses a fruit tree tongue grafting tool which comprises a base, a shearing assembly and a shearing groove. A pair of vertical plates is fixedly connected to the base, guide rods are fixedly connected to the interiors of the vertical plates, sliding blocks are slidably arranged on the guide rods, springs are arranged on the lower sides of the sliding blocks, and the springs are arranged on the outer sides of the guide rods; the shearing assembly is connected to the pair of vertical plates, the shearing assembly comprises a mounting plate, the mounting plate is fixedly connected with the pair of sliding blocks, and a linkage rotary shearing assembly is mounted on the mounting plate; the shearing groove is connected to the base and arranged on the lower side of the shearing assembly, a pair of shearing cavities is formed in the shearing groove, the inner bottom walls of the shearing cavities are connected with base plates, the linkage rotary shearing assembly comprises a pair of rotating shafts, and the rotating shafts are rotationally connected with the mounting plate. Compared with the prior art, the cutting notch of the branches can be improved, the tongue grafting depth of the branches can be increased, the subsequent contact area of the two branches can be increased, then the stability of the branches during tongue grafting is easily improved, the problem that the branches fall off is not prone to occurring, and the tongue grafting effect of the branches is guaranteed.

The application provides a shearing cavitation separation integrated device for desorption of waste oil-based drilling mud sludge, which comprises a static cylinder, an inner part of which is provided with a spacer rotating cylinder and a re-rotator; the rotating cylinder is driven to rotate by a motor; the static cylinder is sequentially provided with a communicating dispersion cavity, a cavitation cavity and a separation cavity; the outer wall of the rotating cylinder is provided with radially arranged scattering rods in the dispersion cavity, which scatters the slurry fluid by rotating; the cavitation cavity is provided with static teeth mounted on the inner wall of the static cylinder and dynamic teeth mounted on the outer wall of the rotating cylinder, the dynamic teeth and the static teeth are gap fitted, and the dynamic teeth rotate to shear the fluid to generate cavitation effect; the separation cavity is used for separating the fluid, so that the heavy phase sludge flows out from the bottom flow outlet of the static cylinder, and the light phase oil and water flow out from the overflow outlet of the static cylinder; the application does not rely on chemical separation reagent, and realizes reduction of environmental pollution, resource recovery and reduction of treatment cost.

This invention relates to the field of mixing device technology, specifically to a rotary shearing type mica pulp homogenizing device. It includes a tank body, a tank bottom disposed at the bottom of the tank body, and a bottom plate disposed inside the tank bottom. A mixing device is disposed between the tank body and the bottom plate. The mixing device includes a rotating rod, with multiple blades fixedly connected to the outer wall of the rotating rod. A bottom-shoveling assembly is slidably connected to the outer wall of the rotating rod near the bottom. Multiple bottom blocks are fixedly connected to the top of the bottom plate, and the surfaces of the multiple bottom blocks together with the bottom plate form an undulating structure. Through this undulating structure, in conjunction with the bottom-shoveling assembly slidably connected to the rotating rod, the bottom-shoveling assembly slides along the arc-shaped top surface of the bottom blocks and generates a reciprocating up-and-down motion as the rotating rod rotates, directly shoveling and lifting the mica particles deposited in the tank bottom. At this time, the pulp lifted by the shovel blades is caught by the blades and rotated and struck, forming an upward vortex and axial thrust, improving the sedimentation and stratification phenomenon of the mica pulp being thinner at the top and thicker at the bottom.

The invention discloses a device for testing the influence of fluid viscosity on the precision of Coriolis flow meters, and relates to the technical field of fluid measurement and testing equipment.The device comprises two Coriolis flow meters, the end of one Coriolis flow meter is connected with a viscosity adjusting assembly, and the viscosity adjusting assembly comprises a mounting shell; a magnetic driving assembly is mounted on the outer wall of the mounting shell, a rotating assembly is rotationally connected to the interior of the mounting shell, the rotating assembly is fixedly connected with a shearing assembly, the shearing assembly is slidably connected with a heating assembly, and a magnetic induction assembly is coaxially mounted on the shearing assembly. Non-contact synchronous driving of an internal rotating assembly is achieved, a Rifle sleeve is driven to do spiral linear movement, switchable contact between a heating cylinder and fluid or a shearing assembly is achieved, and two physical action environments of a pure heat heating field and a rotary shearing disturbance field can be constructed through bidirectional regulation and control of a brushless motor; and the regulation and control precision and the functional diversity of the experimental device are enhanced.

This invention discloses a system and method for predicting the combined rock-breaking effect of rotary-impact drilling, comprising: a combined rock-breaking device for simulating rotary-impact combined rock-breaking of a core sample from a formation to be predicted, based on preset rotary cutting parameters and preset impact drilling parameters, to obtain corresponding combined rock-breaking parameters; the combined rock-breaking device includes a rotary cutting unit for providing rotary cutting torque to the drill bit and an impact drilling unit for providing vibration and impact excitation to the drill bit; and a data processing device for calculating the rock-breaking volume after rock-breaking, using the preset rotary cutting parameters and the current drilling depth; and, based on this, calculating the specific work of core breaking, combining the combined rock-breaking parameters, the rotary shear rock-breaking energy generated by rotary cutting, and the impact rock-breaking energy generated by impact drilling, to evaluate the rock-breaking effect of the formation to be predicted. This invention achieves an effective evaluation of the rock-breaking effect under combined rock-breaking action.

The application relates to a device of a two-way multi-stage rotary shearing high-speed multiphase flow hydraulic cavitation combined with a Venturi tube applied to landfill leachate treatment, and relates to the technical field of landfill leachate treatment. The device comprises a two-way high-speed shearing wheel set and a Venturi tube array. Waste water flows through the reverse series wheel set, the connecting section and the forward series wheel set in sequence, cavitation occurs at the wheel set outlet to generate free radicals, and the shearing structure is used to improve the mass transfer effect. The high-speed multiphase flow formed at the wheel set outlet passes through the flow body in the connecting section to form vortex flow, collides with the fluid sprayed by the Venturi tube array, strengthens the uniformity of the free radicals in the waste water, improves the dissolution amount of the gas treatment agent, and improves the cavitation effect of the subsequent wheel set. The total amount of free radicals at the outlet of the forward series wheel set is large and uniformly distributed, the free radical density at the outlet of the reverse series wheel set is large and the energy is high, and the two can be used to cooperatively remove ammonia nitrogen, chemical oxygen demand and other high-concentration organic pollutants in the leachate, as well as difficult-to-degrade trace new pollutants such as perfluoro / polyfluorinated compounds and microplastics.

Shear assisted extrusion processes (ShAPE) for forming Metal-NCCF extrusions are provided. The processes can include: using a die tool, applying a rotational shearing force and an axial extrusion force to a feedstock material comprising a metal and NCCF (NanoCrystalline Carbon Films); and extruding a mixture comprising the metal and NCCF through an opening in the die tool to form the Metal-NCCF extrusion. ShAPE feedstock materials are provided that can include a metal and NCCF. Conductive solid material mixtures are provided that can include a metal and a NCCF. Portions of the metals and NCCF of the material mixtures can have an isotropic crystallographic orientation. Assemblies relying in part on conductivity can include: a conductive solid material mixture that includes: a metal; and a NCCF.

The automatic penetrating machine for the insulating sleeve comprises a rack platform, and a rotary shearing device, an alignment penetrating device, a positioning device and a clamping device which are arranged on the rack platform, a connecting bottom plate of the rotary shearing device is installed on a machine frame platform in a sliding mode, a sliding frame is installed on the connecting bottom plate in a sliding mode, a supporting mandrel is fixedly installed on the sliding frame, a mandrel outer sleeve is installed outside the supporting mandrel in a rotating mode, and openings corresponding to insulating sleeves are formed in the supporting mandrel and the mandrel outer sleeve. The annular cutter is mounted on the mandrel jacket in a sliding manner; a supporting frame of the alignment penetrating and sleeving device is fixedly installed on a rack platform. The push-out head is slidably mounted on the rack platform, and the butt joint sliding rod is slidably mounted in the push-out head and can be in butt joint fit with a bar; the positioning device is opposite to the butt joint sliding rod and is used for positioning the bar; the clamping device is used for clamping and fixing a bar; according to the utility model, the insulating sleeve can be automatically, quickly and efficiently cut off in a cold state, and the insulating sleeve is sleeved on a bar in a penetrating manner.

The application discloses a kind of geotechnical detection devices for surveying and mapping engineering measurement, belong to geotechnical test technical field, including control cabinet and base, base top is equipped with pressure part, base and pressure part side are equipped with test table.The application, by the leveling mechanism of design, the shear part of two sides relatively arranged is rotated by leveling mechanism, the shear part is again received after being rotated into the test table top housing slot, so that the surface of test table becomes plane, at this time, the extrusion test of two sides test table can be realized by the movement of pressure part, when the shear part is unfolded, the shear force test can be formed by the depression of two sides shear part, after the relative rotation of control two sides test table, the radial extrusion part located in the other side of test table can move radially under pressure, the radial extrusion part of radial movement can be extruded to the outer circumferential side of sample, it is favorable to improve test processing adaptability by switchable test mode, without additional switching sample equipment and calibration leveling, improve test precision.

The invention discloses a non-Newtonian fluid shaft seal and relates to the technical field of shaft seals, the non-Newtonian fluid shaft seal comprises a main shaft and an equipment shell, a protruding block is fixedly arranged on the outer side of the main shaft, the left end of the protruding block is tightly attached to the right side of the equipment shell, and a plurality of annular grooves are formed in the protruding block at equal intervals in the axial direction; non-Newtonian fluid is arranged in the annular grooves, communicating holes are formed in the upper end and the lower end of the interior of the protruding block, and the communicating holes penetrate through the upper portion and the lower portion of the protruding block. Through the synergistic effect of the non-Newtonian fluid and the high-pressure steam injection hole, the formation of a dynamic sealing barrier is realized by utilizing the axial pressure of the non-Newtonian fluid under the action of high-pressure gas and the strength improvement characteristic of the non-Newtonian fluid under rotary shearing, and the high-pressure resistance and the leakage resistance of the shaft seal are remarkably enhanced; by means of the trapezoidal section structure of the annular groove, lateral constraint is formed on the non-Newtonian fluid, loss of the non-Newtonian fluid under the high-pressure or shearing working condition is reduced, and stable retention of the non-Newtonian fluid is achieved.

A kind of DP2.1 transmission line manufacturing process and device.A shearing peeling device includes base, guiding rotating cylinder is installed inside the base, driven rotating device is provided with right side of the guiding rotating cylinder, motor is connected with the driven rotating device, the motor drives driven rotating device to rotate, driving limiting device is connected below the driven rotating device and below the guiding rotating cylinder, rotating shearing device is installed above the guiding rotating cylinder, the rotating shearing device is connected with the guiding rotating cylinder by linkage rod each other.The whole process of the improvement of DP2.1 transmission line can be well reached the effect of the high resolution and high bandwidth required by transmission line, while process step is compact, production efficiency is high.

The minimally invasive channel ring shear instrument comprises an outer pipe shear and an inner pipe shear, the outer pipe shear is of a tubular structure, the inner pipe shear is rotationally arranged in an inner hole of the outer pipe shear, an outer shear blade is arranged at the far end of the outer pipe shear, an inner shear blade is arranged at the far end of the inner pipe shear, and the outer shear blade and the inner shear blade are arranged in a staggered mode. When the outer pipe shear and the inner pipe shear rotate coaxially, the outer shear blade and the inner shear blade conduct shearing action. Human tissue is sheared in a rotary shearing mode, ring shear is formed, and the slender rod-shaped ring shear instrument is small in occupied channel diameter, small in damage to the human tissue, small in occupied space of an operation and not prone to damaging the human tissue except an operation site.

The invention relates to the technical field of slitting equipment, and discloses an alloy copper strip slitting device and method for a switch socket, and the alloy copper strip slitting device comprises a machine body, a first cutter shaft, a second cutter shaft and a plurality of cutter assemblies arranged in the axial direction of the cutter shafts. The cutter assembly comprises a cutter head and a transition device assembly. The transition device assembly is composed of a rigid supporting ring, an elastic supporting layer and a rigid pressing ring which are coaxially arranged. A first annular blade edge and a second annular blade edge are formed at the two ends of the cutter head respectively and serve as slitting blades. During slitting, the opposite cutterheads form a rotary shearing matching area, the outer circular faces of the cutterheads and the outer circular face of the opposite rigid pressing ring are pressed to form a clamping contact area, and the strip-shaped belt is clamped at a short distance after being sheared and synchronously dragged and output. The rigid pressing ring eccentrically forms a guide groove area and a protruding pressure relief area, so that the strip-shaped belt is limited and guided, and scratches are reduced. According to the equipment, turned edges, burrs, side bends and wavy edges can be reduced, and the width consistency is improved.

This invention provides a hybrid-mode MRE vibration isolator and its design method. The hybrid-mode MRE vibration isolator is installed on the drive shaft of rotating equipment and includes an irregularly shaped stacked MRE. The irregularly shaped stacked MRE is frustum-shaped, and contains multiple layers of spacers and MRE material layers arranged in parallel at intervals. The spacers are made of ferromagnetic metal. By employing a frustum-shaped stacked MRE with different upper and lower diameters, this hybrid-mode MRE vibration isolator reduces the dimension of the controlled object compared to existing cylindrical MRE vibration isolators. This hybrid-mode MRE vibration isolator directly transfers abnormal vibration energy from large rotating equipment to the MRE material through the drive shaft. The change in MRE stiffness can suppress abnormal vibrations. This vibration isolator is suitable for intelligent vibration reduction of large rotating equipment, especially in rotating shear applications.

The invention belongs to the field of slope engineering, and particularly relates to a construction method of a universal three-dimensional slope potential sliding surface model in a rotation mode, which comprises the following steps of: constructing a potential sliding surface by taking the potential sliding surface as a rotation type shear failure surface and utilizing the physical and mechanical relationship between the shear failure direction and the movement direction of the potential sliding surface; and then converting solution of the potential sliding surface into determination of a shear failure plane of any point on the potential sliding surface, further establishing an angle function representing the position of the shear failure plane under a Taylor series expansion, and on the basis, applying a discrete technology and a recursive calculation mode, and introducing potential sliding surface range limitation and a curved surface concave mechanism, so as to obtain the shear failure plane. The potential sliding surface is effectively generated. The method has the advantages of being simple, reliable, wide in application range, high in universality, high in precision, rapid, convenient and the like. The method realizes simple, reasonable and effective generation of the potential slip surface, thereby providing a precondition basis for reliable slope stability analysis, and providing powerful guidance for implementation of slope engineering reinforcement measures under complex conditions.

The invention discloses a production process for preparing cat litter from agricultural wastes, and belongs to the technical field of cat litter production. Comprising a machine base, a mixing box located at the top of the machine base, a stirring shaft rotationally installed between the two ends of the mixing box, stirring blades fixed to the side edge of the stirring shaft, a speed reducer installed at the end of the stirring shaft and a driving motor used for driving the stirring shaft to rotate. The telescopic mechanism composed of the sleeve, the corrugated guide groove and the guide block is arranged at the end of the stirring shaft, and the telescopic mechanism is connected with the output shaft of the speed reducer through the connecting mechanism composed of the sleeve, the outer spline and the inner spline, so that the stirring shaft can stably reciprocate in the axial direction under the guidance of the telescopic mechanism while keeping rotary shearing; the straw powder base material, the bentonite heavy material, the bamboo charcoal powder light material and the binder dry powder form a three-dimensional mixing flow field of radial shearing dispersion and axial pushing exchange in the mixing box, and the phenomenon that local raw materials are stacked or not mixed is avoided.

The application discloses a river section fresh water main pipe repairing device, which comprises a horizontal directional drilling machine, a plurality of drill rods are assembled on the horizontal directional drilling machine, a reamer is threadedly connected to the end of the last drill rod, the reamer comprises a shell and an obstacle crossing mechanism, the shell is composed of a shell one and a shell two, a crushing piece is arranged on the shell one, the obstacle crossing mechanism comprises a driving assembly, a transmission assembly and an adjusting piece, in the application, when the rock breaking cone encounters hard rock jam, the obstacle crossing mechanism is internally designed, the reamer body can realize instantaneous escape and obstacle crossing without stopping drilling, the unexpected downtime is reduced to the minimum, the work efficiency and the work period controllability are obviously improved, and when the rock breaking cone jam occurs, the torque transmission between the shell and the driving assembly is released, so that the huge rotary shearing force and the radial eccentric load are no longer applied to the weak point which has been engaged.

The invention discloses a pair of scissors, and relates to the field of medical instruments. According to the scheme, two cutterheads of a shearing assembly rotate oppositely, objects are rapidly cut by rotating shearing force, operation is convenient and fast, the cutting efficiency is improved, hand fatigue caused by frequent opening and closing of traditional scissors is avoided, and the shearing continuity is enhanced; when a hard object is difficult to push to cut, the knife rest rotates around the pin shaft to form a lever labor-saving structure, so that clamping and cutting are completed when the cutter head extrudes the object; for a slippery object, the binding frame is pressed to deflect to limit the object and press the object to the cutter head, the eccentric sliding groove is linked with the guide column and the sliding piece to extrude the elastic piece, and the elastic piece is reset to the binding frame after cutting. The binding frame can act only by synchronously applying pressure on the two sides, and is locked due to a reverse rotation structure when being stressed on one side, so that an anti-misoperation safety mechanism is formed. The cutting and clamping integrated device is simple in structure and convenient to use, realizes cutting and clamping integration, can quickly cut off sutures or tissues, stably clamps wet, slippery and small objects, reduces the slipping risk, and remarkably improves the cutting efficiency.

The invention belongs to the technical field of grinding and discloses pre-grinding equipment which comprises a rack, a grinding assembly and a filtering assembly. The grinding assembly comprises a rotating shaft driven by a motor; a rotary shearing disc and a plurality of stirring discs are fixed on the shaft; an annular shell is arranged above the motor, and a fixed shearing disc opposite to the rotary shearing disc is fixed at the top of the annular shell; the top of the rotary shearing disc is a multi-layer stepped bulge, the bottom of the fixed shearing disc is a corresponding recess, the rotary shearing disc and the fixed shearing disc form a grinding gap which is reduced layer by layer from inside to outside, and the side wall of each layer is provided with staggered shearing grooves; materials are firstly subjected to multi-stage shearing and crushing between the two discs, then enter the annular machine shell, are further ground by the grinding medium driven by the stirring disc, and are finally separated and discharged by the filter element. According to the equipment, efficient pre-shearing and medium grinding are integrated, and the crushing capacity for high-hardness impurities is remarkably improved, so that the number of subsequent grinding equipment is reduced, the energy consumption and the cost are reduced, and the fineness and the uniformity of products are improved.