33results about How to "Increase displacement travel" patented technology

The invention discloses a novel intelligent shock absorber integrating multilayer magnetorheological elastomers with a magnetorheological damper. The shock absorber comprises the magnetorheological damper and a variable stiffness device comprising the multilayer annular magnetorheological elastomers and magnetorheological elastomer magnet exciting coil windings mounted between the multilayer annular magnetorheological elastomers respectively, wherein the magnetorheological damper comprises a cylinder barrel; the cylinder barrel is connected to the top end of the shock absorber through a spring; a piston plate is arranged in the cylinder barrel; a piston rod is fixedly connected to the lower side of the piston plate; the other end of the piston rod penetrates out of the cylinder barrel and is fixed at the bottom end of the shock absorber; a magnetorheological damper magnet exciting coil winding is wound on the side wall of the piston plate; the cylinder barrel is filled with a magnetorheological fluid; a damping device is connected with the variable stiffness device in parallel or in series. Due to the integration of the multilayer magnetorheological elastomers and the magnetorheological damper, the stiffness and damping change range of the shock absorber is relatively large, a relatively good shock absorption effect can be achieved, and the shock absorber is compact in structure.

The invention discloses a multilayer magneto-rheological elastomer shock absorber which is bidirectionally regulated in rigidity. The multilayer magneto-rheological elastomer shock absorber comprises a thin magneto-rheological elastomer layer, a thin magnetic conducting metal layer, a permanent magnet, an upper base and a lower base, wherein the thin magneto-rheological elastomer layer and the thin magnetic conducting metal layer are continuously in glued joint with each other and are superposed to form a magneto-rheological elastomer, the upper end and the lower end of the magneto-rheological elastomer are respectively in glued joint with the permanent magnet and then are installed between the upper base and the lower base, and the permanent magnet is in threaded connection with the upper base and the lower base. The multilayer magneto-rheological elastomer shock absorber further comprises a magnetic conducting framework and magnet exciting coils, wherein the magnetic conducting framework is nested or surrounds the inner side or the outer side of the multilayer magneto-rheological elastomer between the upper base and the lower base, the lower end of the magnetic conducting framework is fixedly connected with the lower base, and a gap is reserved between the upper end of the magnetic conducting framework and the upper base. The multilayer magneto-rheological elastomer and the magnetic conducting framework are provided with the magnet exciting coils, and a longitudinal section formed by the multilayer magneto-rheological elastomer and the magnetic conducting framework is in a shape of a Chinese character 'chuan'. The multilayer magneto-rheological elastomer shock absorber is compact in structure, simple in structure, large in working stroke and capable of saving a space and achieving bidirectional rigidity regulation.

The invention relates to a roller type vibration auxiliary polishing device and method, and belongs to the field of ultraprecise machining. A Z-direction motion platform is connected with a first Z-axis motion system and a second Z-axis motion system through screws, the first Z-axis motion system and the second Z-axis motion system are connected with a base platform through screws, a first X-direction motion platform is connected with a first X-axis motion system and a second X-axis motion system through screws, the first X-axis motion system and the second X-axis motion system are connected with the base platform through screws, a second X-direction motion platform is connected with a third X-axis motion system through a second screw, the third X-axis motion system is connected with the base platform through a screw, and a compound type vibration platform is connected with the second X-direction motion platform through a screw. The device and method have the beneficial effects that polishing efficiency is high, polishing uniformity and consistency are good, and polishing treatment and real-time online repairing of the curve face can be finished.

The invention discloses an electrical heating pressure appliance capable of controlling pressure through displacement caused by deformation of an elastic element. The appliance comprises a container cover, a seal ring, a container, an outer pot, a heating disk, the elastic element and a power supply switch. The appliance is characterized in that the elastic element is sleeved on the stand bar of the heating disk, the heating disk, the elastic element and the outer pot are fixed through bolts, and the heating disk is flexibly connected with the outer pot; the lower bottom of an inner pot is stuck to the cambered surface of the heating disk, the cover teeth of a pot cover are buckled with the button teeth of the outer pot, and the seal ring is sleeved on the container cover and respectively adhered to the container cover and the container; and the power supply switch is fixed on the side face of the outer pot through a bracket, and the heating disk and the power supply are connected in series on an alternative current power supply. The electrical heating pressure appliance disclosed by the invention is suitable for an electric pressure cooker, a pressure soymilk machine, a pressure coffee machine and other appliances controlled by using the elastic elements.

The invention belongs to the technical field of quenching equipment, and particularly relates to metal quenching equipment for metal heat treatment. The metal quenching equipment comprises a quenching machine seat, wherein a plurality of quenching cooling seats which are symmetrical along the central line of the quenching machine seat are arranged on the quenching machine seat; metal induction quenching pieces are arranged in the quenching cooling seats; a middle mounting plate is further arranged on the quenching machine seat; and a plurality of metal clamping portions which are symmetrical along the central line of the middle mounting plate are arranged on the middle mounting plate. According to the metal quenching equipment, an elastic limiting clamping assembly is arranged, so that in a heat treatment process, the elastic limiting clamping assembly can clamp and fix an un-clamped end of a steel tube, synchronously rotates with the steel tube along with heat treatment, and does not interfere with a quenching process, so that stability of the steel tube during quenching is kept, angle deviation of the steel tube in the quenching process is avoided, and quenching uniformity and effect are improved; and moreover, the elastic limiting clamping assembly can be suitable for steel tubes with different diameters, is relatively good in positioning and clamping effect, and is relatively high in practicability.

The invention relates to a friction damper device which comprises an outer cylinder assembly, a first rotating piece, a linear rotating assembly and a friction assembly, the outer cylinder assembly is provided with a rotating cavity and a rotating hole, and the rotating hole is communicated with the rotating cavity; the first rotating piece is arranged on the inner wall of the rotating cavity; the linear rotating assembly comprises a lead screw, an inner cylinder and a nut, the inner cylinder is connected with the nut, the lead screw is in threaded connection with the nut, and the inner cylinder is rotationally matched with the first rotating piece; and the friction assembly is arranged on the inner wall of the rotating cavity and is in friction fit with the inner cylinder. According to the friction damper device, linear displacement of the lead screw is converted into rotation of the nut, and the allowable stroke in the energy consumption process can be increased. Besides, on one hand, friction can be generated when the nut and the lead screw are in threaded connection, part of kinetic energy is consumed, meanwhile, the friction assembly generates damping for rotation of the inner cylinder, and then the energy consumption efficiency of the friction damper device is effectively improved.

The invention discloses a two-rotation one-translation large-stroke small-thickness large-hollow parallel piezoelectric micro-motion platform. The two-rotation one-translation large-stroke small-thickness large-hollow parallel piezoelectric micro-motion platform includes a moving table movably arranged at the upper portion of a base in a gap mode, a first driving unit, a second driving unit, a third driving unit and a fourth driving unit distributed in rectangular shape in sequence are arranged at the base, the first driving unit, the second driving unit, the third driving unit and the fourthdriving unit are independently retracted and stretched and arranged on the moving table, a z axis perpendicular to the moving table is set, a y axis is from the second driving unit to the first driving unit, an x axis is from the second driving unit to the third driving unit, and the moving table can complete the lifting of up and down along the z axis, and can complete the x axis tilt rotation and y axis tilt rotation. The two-rotation one-translation large-stroke small-thickness large-hollow parallel piezoelectric micro-motion platform has the advantages that the structure is simple and compact, the displacement stroke is high, no displacement coupling is achieved, the moving table and the base have large hollow, and a displacement sensor is prone to integrating.

The invention discloses a two-translation one-rotation large-stroke coupling-free large hollow parallel piezoelectric micro-motion platform which comprises a movable table board, a fixed table body isarranged below the movable table board in a gap mode, a movable table body is arranged in the fixed table body in a gap mode, and a first screw is fixed between the movable table body and the movabletable board in a screwed mode. The movable table body comprises a first edge, a second edge, a third edge and a fourth edge which are sequentially and vertically arranged in the anti-clockwise direction of the movable table body. The fixed table body is provided with a first driving unit acting on the first edge in a telescopic mode, a second driving unit acting on the second edge in a telescopicmode, a third driving unit acting on the second edge in a telescopic mode, a first sensor assembly facing the third edge, a second sensor assembly facing the fourth edge and a third sensor assembly.And two translational motions and one rotation of the movable table board can be realized through the coordinated control of the voltage control of the first driving unit, the second driving unit andthe third driving unit. The integrated capacitive displacement sensor has the advantages of simple and compact structure, large working table surface, large stroke, no parasitic displacement, high inherent frequency and convenience in integration of the capacitive displacement sensor.

The embodiment of the invention provides a bar arranging device and a reinforcing mesh machine. The bar arranging device comprises a fixing table, a discharging groove and a movable mechanism. The fixing table is used for fixing a plurality of bars arranged at intervals in the front-back direction. The blanking groove is formed above the fixed table, is positioned behind the plurality of bars and is used for bearing the bars to be arranged; the moving mechanism is provided with a first moving part capable of moving up and down and a second moving part capable of moving horizontally, the first moving part is used for moving upwards to a first position, and the first moving part in the first position bears a plurality of bars to be separated from the fixing table and bears the bars to be arranged to be separated from the discharging groove. The second moving part is used for carrying the multiple bars in the separated state and the to-be-arranged bars in the separated state to move by a preset value in the horizontal direction, the displacement stroke of the moving mechanism cannot be increased along with the increase of the width of the mesh, and therefore the manufacturing time of the mesh can be shortened; and the arrangement efficiency of the bar arrangement device is effectively improved.