11results about How to "Stable stiffness" patented technology

The invention provides a hydraulic torque conversion stabilizer bar device and an active suspension system, and the hydraulic torque conversion stabilizer bar device comprises a hydraulic torque converter which comprises an input connecting end and an output connecting end; the driving motor is in transmission connection with the input connecting end and is used for driving the hydraulic torque converter to operate; one end of the stabilizer bar assembly is in transmission connection with the output connecting end, and the other end is in transmission connection with a shock absorber assembly of the automobile; the stabilizer bar assembly further comprises a torque sensor, and the torque sensor is used for detecting torque force borne by the stabilizer bar assembly. And the controller is in signal connection with the driving motor and the torque sensor, and can control the operation of the driving motor according to a signal fed back by the torque sensor. According to the scheme, the rigidity, the height and the damping force of the suspension system can be adjusted according to actual requirements, more stable and accurate control experience is provided for a driver, and meanwhile the riding comfort is kept. The method is particularly important for medium and large vehicles, and is also suitable for limit driving modes and complex road conditions.

An air rib structure of an expandable tent comprises a main tent air rib, a protective channel air rib is installed at the rear end of the main tent air rib, a vehicle-mounted connector air rib is installed at the front end of the main tent air rib, expansion opening air ribs are installed at the positions, close to the protective channel air rib, of the two sides of the main tent air rib at the rear end of the main tent air rib, and the air ribs are relatively independent and provided with inflation and deflation devices respectively. The supporting rods are mutually supported and connected into a whole; the main tent air rib is designed to be of an overall multi-section arc-arch-shaped transverse connecting structure, the whole main tent air rib is in an arch shape after being inflated, the main tent air rib is arranged to be two independent air chambers which are relatively independent and supported in a staggered mode, and inflation openings are formed in the two independent air chambers respectively. The protection channel air rib, the vehicle-mounted connector air rib and the expansion opening air rib are detachably and fixedly connected with the main tent air rib respectively and are provided with independent inflation openings respectively. The air ribs are relatively independent and are mutually connected and supported, the integrity is good, safety is achieved, stability is high, practicability is high, operability is good, building, withdrawing and transferring are convenient and rapid, and the high practical application value is achieved.

A precise forming and manufacturing method for a spatial arc-shaped thin-wall structure relates to the field of precise forming of high-precision arc-shaped thin-wall structures, and comprises an upper female die, a lower female die, a left male die, a right male die and a positioning pin, the upper female die and the lower female die are consistent in structure and are symmetrical about an XOY plane, and the left male die and the right male die are consistent in structure and are symmetrical about a YOZ plane. A locating pin special hole is formed in the symmetric line of the upper female die and the lower female die, a thin-wall forming structure blank is installed between the upper female die and the lower female die, a locating pin penetrates through the locating pin special hole and a locating pin hole, and the upper female die and the lower female die are fixed through a fixing assembly. The inner arc surfaces of the upper female die and the lower female die are respectively designed according to upper and lower theoretical curved surfaces of the arc-shaped thin-wall structure; the left male die and the right male die are connected to the two sides of the upper female die through fixing assemblies, the left male die and the right male die are connected with the lower female die through fixing assemblies, and the die inner cambered surfaces of the left male die and the right male die are designed according to the left theoretical curved surface and the right theoretical curved surface of the arc-shaped thin-wall structure respectively. And high-precision manufacturing of the unit arc-shaped thin-wall structure is achieved.

The utility model aims to provide the welding rib structure suitable for welding the handrail upper cover hot plate, and the problems that the welding is not firm after being welded, the welding structure is poor in rigidity and the welding structure is easy to break in the welding process due to insufficient welding area are solved. Meanwhile, equipment automation can be achieved in the welding process, production efficiency is improved, labor intensity of workers is reduced, the qualified rate of finished products is high, and product performance is stable. The handrail wrapping skin wraps the handrail wrapping framework with the handrail foaming layer, and the handrail foaming layer is nailed on the surface B of the handrail wrapping framework through staples; a handrail upper cover welding rib D on the G face in the handrail upper cover is connected with a handrail wrapping framework welding rib C on the B face in the handrail wrapping framework in a welding mode through hot plate welding. The handrail upper cover has the advantages that other connecting pieces are not introduced, the weight of the handrail upper cover is reduced, the handrail upper cover is a moving piece, the gravity center change caused by falling of parts cannot be caused, and the stability of the opening function of the handrail is guaranteed.

The utility model discloses a linear actuator and a shifter. The linear actuator comprises a motor; a transmission assembly; a screw rod; a tubular telescopic member; the front pulling assembly is mounted at the end part of the tubular telescopic component through a clutch component; wherein the clutch assembly comprises a first connector, a second connector and an elastic component, the first connector and the second connector are kept relatively fixed in the circumferential direction and can relatively move in the axial direction when engaged, and the tubular telescopic component can independently rotate in the axial separation state of the first connector and the second connector. The clutch assembly is arranged between the front pulling assembly and the tubular telescopic component, and the clutch assembly is arranged to be of a structure that the first connector, the second connector and the elastic component are matched, so that if the tubular telescopic component encounters an obstacle in the retraction process, the second connector and the first connector are separated in the axial direction, and the tubular telescopic component idles; the tubular telescopic component is prevented from continuously driving an object connected to the front pull assembly to retract so as not to extrude an obstacle, and the obstacle is also prevented from damaging the linear actuator.

The utility model belongs to the technical field of cable protection tubes, in particular to cable protection tube detection equipment, which comprises a mounting seat, a control device is arranged outside the mounting seat, and the control device comprises a control motor, a threaded rod, a movable plate, an extrusion plate and an arc plate. According to the cable protection tube detection equipment, when the cable protection tube is limited, the cable protection tube is firstly placed on the mounting seat, then a driving motor is started, two sliding plates are controlled to clamp the cable protection tube, an adjusting rod is rotated, a clamping plate is controlled to drive a mounting rod to move, and an alarm is made to be attached to the inner wall of the cable protection tube; when the rigidity of the cable protection pipe is detected, the control motor is started, the extrusion plate is controlled to extrude the pressure sensor, at the moment, the pressure sensor can test the pressure reading, and when the cable protection pipe deforms, the alarm can be extruded to give an alarm. At this time, the rigidity of the cable protection tube can be detected by observing the reading of the pressure sensor.

The present invention discloses a soil sample preparation system and preparation method of a soil sample pressing and exhausting plate with a staggered ring rib structure, comprising a steel cylinder, in which a soil sample, a soil sample pressing and exhausting plate, filter paper and a pressure head are placed; the soil sample pressing and exhausting plate comprises a circular main board, and the front of the main board is provided with a plurality of ring ribs spaced in a radial direction with the center of the main board as the center of the circle; there is a ring seam between two adjacent ring ribs, and each ring rib is evenly provided with a plurality of inter-rib seams along its circumference, and the inter-rib seams on the two adjacent ring ribs are staggered in the circumference; exhaust holes penetrating the main board are formed on the ring seams and the inter-rib seams; the exhaust holes, inter-rib seams and ring seams constitute an exhaust channel; the gaps between the components and the exhaust channel of the soil sample pressing and exhausting plate together constitute an exhaust path for gas in the soil sample. The present invention provides an exhaust channel in soil sample pressing, which ensures the stable exhaust of gas during soil sample pressing and improves sample preparation efficiency and sample preparation quality.

The purpose of the present invention is to provide a damper. In order to solve the problem of damping force change after the friction plate of a friction damper is worn, the nonlinear elastic element of a disc spring is used to self-compensate the wear gap to obtain a stable damping force. The friction disc spring includes an upper mounting plate, an upper supporting ring, a lower supporting ring, a fixing cover, a disc spring, a fixing screw, a pressure ring, an upper friction plate, a rotating plate, a rotating shaft, a lower friction plate, and a lower mounting plate. By configurable working points of the disc spring, the damping force is adjustable and controllable during the installation process, and the installation is convenient.

The application discloses a precise and simple FCM ship body forming die. The die is made of a plurality of station plates, positioning clamping plates and face plates which are connected to form a reduced-size frame with ship body lines inside. The face plates in the frame are attached with forming surfaces which are composed of a glass fiber strength layer, a polyester putty layer and a surface gel coat layer. The frame is connected and fixed with a base and a supporting rod made of rectangular tubes to form a stable ship body die. On the face plates in the frame, reference points calibrated by a laser range finder are arranged at the intersection of each station and different waterlines, and the connecting lines of the reference points form a point net which is the same as the ship body lines, so as to mark the size of the forming surface, thereby ensuring the size accuracy, smooth lines and smooth surface of the die. The die is made of light materials, has the advantages of light weight, stable structure, precise lines, simple process, short production cycle and low manufacturing cost, and is suitable for the production of FCM ship bodies with high production technical requirements and small production batches.

This utility model discloses a miniature loudspeaker, including a diaphragm assembly and a voice coil. The diaphragm assembly includes a center mount, which includes a body. The body has downwardly bent extension arms on opposite sides, and the bottom of each extension arm has an outwardly bent mounting arm. The voice coil is fitted onto the mounting arm. This miniature loudspeaker ensures effective suspension depth of the voice coil in the magnetic gap, significantly improving magnetic field utilization, BL value, and BL symmetry, optimizing distortion. It also eliminates the need for a separate frame and its corresponding assembly process, achieving a balance between high performance and low cost. The voice coil is located outside the extension arms, allowing for a wider diaphragm surround, thereby improving the low-frequency acoustic performance of the miniature loudspeaker.

The utility model discloses a linear actuator and a shifter. The linear actuator comprises a motor; a transmission wheel; a screw rod; a tubular telescopic member; wherein the transmission wheel comprises a transmission hole, the lead screw comprises a transmission section, the transmission section is meshed in the transmission hole, and the transmission section and the transmission hole are kept to rotate synchronously in the circumferential direction and can move relatively in the axial direction, so that the lead screw can move in the extending direction of the tubular telescopic component when subjected to axial tension load, and the transmission section and the transmission hole are separated in the axial direction; power transmission between the transmission wheel and the lead screw is cut off; and the elastic component acts on the lead screw to keep the stress state of the lead screw in the retraction direction of the tubular telescopic component. The lead screw is arranged to be of a structure capable of moving in the axial direction of the transmission wheel, so that in the retraction process of the tubular telescopic component, if the tubular telescopic component encounters obstacles, the tubular telescopic component drives the lead screw to move in the direction away from the side of the transmission wheel along the central shaft, the transmission section is not meshed with the transmission hole any more, and the transmission wheel is driven by the motor to idle; and the damage of the linear actuator caused by the obstacle is avoided.