70results about How to "Smooth vertical movement" patented technology

Disclosed herein is a door hinge structure for a refrigerator. The door hinge structure comprises an upper fixture unit which is screwed to a predetermined front upper portion of a refrigerator body, and has an upper hinge pin to be inserted in a top aperture formed at an upper surface of a refrigerator door, an upper hinge unit which is mounted on the upper surface of the door, and has a through opening for allowing a distal end of the upper hinge pin to be slidably inserted therethrough, the upper hinge unit being coupled with the upper fixture unit by making use of a torsion spring so that it is vertically spaced therewith, a lower fixture unit which is screwed to a predetermined front lower portion of the body, and has a lower hinge pin to be inserted in a bottom aperture formed, at a lower surface of the door, a lower hinge unit which is mounted on the lower surface of the door, and has a through opening for the insertion of the lower hinge pin, and a stopper member which is interposed between the lower fixture unit and the lower hinge unit and is adapted to stop pivotal movement of the door at least one time.

There is provided a linear vibrator including a fixing unit having a magnet in an inner space of a certain size, the magnet generating magnetic force; a vibration unit including a coil disposed to face the magnet and generating electromagnetic force by interaction with the magnet, and a holder coupled with a surface of the coil and fixedly supporting a mass body which vibrates; and an elastic member coupled with the holder and the fixing unit and providing elastic force to the vibration unit.

The invention relates to a control method, in particular to a fault-tolerant self-adaptation control method of an automobile active suspension system. The fault-tolerant self-adaptation control method of the automobile active suspension system aims at resolving the problems that an existing suspension control technology design model is relatively simple, cannot meet dynamic performance of the system when an actuator breaks down, and cannot respond to indeterminate interference of the outside world and unmodeled dynamics. The fault-tolerant self-adaptation control method of the automobile active suspension system comprises a first step of building a nonlinear semi-automobile active suspension model, a second step of designing a nonlinear Robust controller, and a third step of adjusting control gain parameters of the nonlinear Robust controller. The fault-tolerant self-adaptation control method of the automobile active suspension system is applied to the field of automobile active suspension control.

A highly safe stretcher that can be moved up and down smoother and where are stopper mechanism is more reliable, so that the stretcher can be correctly handled by ambulance crews. A stretcher (100) has casters on front legs (15) and rear legs (17), an upper frame (11) on the upper part of which a stretcher body is placed, constant load springs (28,29) in a slide mechanism for vertically varying the position of the upper frame (11), and mechanical locking devices (32,33) for stopping the upper frame at desired positions. The stretcher (100) further has a lock mechanism (31) for locking front leg-assisting frames (16), for supporting the front legs, so as not to slide, and has rear leg-assisting frames (18) for supporting the front legs (15), the front leg-assisting frames (16), and the rear legs (17). The stretcher (100) is characterized in that rollers (36) are provided between supporting portions of the lock mechanism (31) and of the rear leg-assisting frames (18) and a center rail (14). The rollers (36) smoothen the slide motion between the supporting potions and the center rail (14).

The tip-stop mechanism for an aerosol container has a needle valve placed into a passage area and closes discharge hole due to plate springs engagement with tapered surfaces of the needle valve. An operation lever is supported on a pivot shaft and when pressed downward forces a portion of the lever to cause the needle valve to move backward, opening the discharge hole. After that, the operation lever engages the upper surface of the spout and moves downward together with the spout and the stem, thereby the lever is shifted to an operation mode.

A toilet flush water supply device for supplying flush water to a flush water tank of a flush toilet is disclosed. The toilet flush water supply device comprises a water supply pipe connected to an external water supply source, a water supply valve for switching between spouting and stopping of flush water supplied from the water supply pipe into the flush water tank, a float for switching between the spouting and stopping of the above water supply valve by a vertical movement thereof linked to fluctuations in the flush water level within the flush water tank, and a float guide disposed on the outer surface of the water supply pipe for guiding the vertical motion of the float.

A peeling machine according to the present invention includes a cutter head and a feed mechanism having upper and lower feed rollers, and the feed mechanism includes a first holder that supports the lower feed roller, a second holder that supports the upper feed roller, a roller opening/closing driving mechanism, a synchronizing mechanism that has a pinion disposed in the same vertical plane as axes of the both feed rollers and first and second racks, and a grasping-force applying cylinder that applies a downward work grasping force to the second holder.

A vertically moving device includes a spool mechanism for spooling at least two wires that are fed out to form loops and a vertically movable platform suspended by looped portions of the at least two wires fed out from the spool mechanism. The vertically movable platform includes at least four wire-guiding rotating bodies over which the looped portions of the wires are run. And a looped portion of one of the wires is run over at least two of the wire-guiding rotating bodies, and a looped portion of the other of the wires is run over at least two other of the wire-guiding rotating bodies

A shock absorber has a suspension spring bearing fixed securely to a cylinder. The shock absorber includes a cylinder, a suspension spring bearing on the cylinder, and a suspension spring. A suspension spring bearing includes a cylindrical shaped main body that covers an end of the cylinder, an annular spring bearing part formed on a periphery of the main body, a plurality of upper salients that project inwardly from the main body and that are spaced apart at even intervals around the circumference of the main body, in which the upper salients press against the periphery of the cylinder, and a plurality of lower salients that project inwardly from the main body and that are spaced apart at even intervals around the circumference of the main body at locations below those of the upper salients, in which the lower salients press against the periphery of the cylinder.

A lightering connection system is provided for coupling a tug boat to a barge, where the connection permits relative vertical movement between the tug and barge while maintaining horizontal movement control between the vessels. The tug boat has port and starboard retractable rams having coupler heads which engage the barge along inboard port and starboard vertical receiver channels. The coupler heads and vertical receiver channels are provided with waveform surfaces to permit interlocking engagement between the tug boat and barge. The waveform surfaces also permit smooth relative movement of the surfaces as the ram disengages in performing the lightering operation. The coupler heads and vertical channel receivers have a mating angular construction to maintain horizontal movement control between the tug and barge during the lightering operation.

The invention discloses a polisher capable of adjusting the polishing height of lipping of rail head, and belongs to the technical field of railway maintenance equipment. The polisher comprises a rack. The polisher is characterized by further comprising a vertically moving device and a travelling device; the vertically moving device comprises a hanging bracket, ball bearing bases, ball screws and ball nuts, stepper motors and vertically sliding blocks are arranged on the rack, and the hanging bracket is connected with the rack in a sliding mode through the vertically sliding blocks; the travelling device comprises a driving gear, a driven gear, a travelling wheel, a rolling wheel and a motor, wherein the driving gear is connected with the motor shaft of the motor, the driven gear is driven by the driving gear through gear meshing, and the travelling wheel is connected with the driven gear. According to the polisher capable of adjusting the polishing height of the lipping of the rail head, when polishing is conducted on the lipping of the rail head, the polisher can uniformly move at a low speed, and a grinding wheel is driven to automatically feed in the vertical direction, so that polishing in the vertical direction is conducted on the lipping of the rail head, and the polishing speed is uniform; moreover, the grinding wheel can vertically move, and polishing is conducted on any position of the height of the lipping of the rail head, so that the overall effect of polishing of the lipping of the rail head is improved.

To achieve a disc device with a disc changer in which number of motors is reduced, and a quiet and stable switching operation, accurate positioning of a sub-tray, smooth damp and release of a disc are possible, only a first motor for driving a main tray and a second motor for driving the sub-tray are used as driving sources, and a gear switching mechanism is provided, in which driving channels of the first and second motors can be disconnected. The gear switching mechanism comprises a first cam gear having first and second cam grooves formed therein and rotationally driven by the first motor; a clutch lever installed in a back-and-forth swingable manner around a pivot fixed to a body frame and a back edge fitted slidably into the first cam groove in the first cam gear; a second cam gear having a cam groove formed therein and connected to a traverse-unit moving unit via the cam groove; and a clutch gear pivotally supported by a front edge of the clutch lever and capable of switching of connection to a channel including a transmission gear engaging with a sub-tray rack for conveying the sub-tray to the playback position, or to a channel including the second cam gear and transmission gears connected to the second motor.

The invention relates to the technical field of auxiliary devices and in particular to a blending device for a housekeeping detergent. Mixtures of the blending device can be conveniently and uniformlymixed, so that the use reliability and the practicability of the blending device can be improved. The blending device comprises a bottom plate, a working tank as well as a fixing shaft, a handle, aninsertion column, an insertion tube, a connecting column, a plurality groups of stirring rods, a limiting column, two groups of limiting springs and two groups of positioning blocks, wherein a workingcavity is formed in the working tank; a feeding maintenance hole is formed in the top end of the working tank in a communicating manner; a baffle cover is mounted at the feeding maintenance hole in acovering manner; a discharge tube is in sealed communicating below the front side of the working tank; a discharge valve is arranged on the discharge tube; a limiting cavity is formed in the lower part inside the insertion column; a left through hole and a right through hole are formed in the left side wall and the right side wall of the insertion column; a left limiting hole and a right limitinghole are respectively formed in the left side wall and the right side wall of the insertion tube; a through groove is formed in the middle of the baffle cover in a communicating manner; a bead groupis rotationally fixed in the inner side wall of the through groove; and two groups of fixing rings are fixedly arranged on the outer side of the insertion column in a sleeving manner.

The invention discloses a multi-spring steel plate damper. The multi-spring steel plate damper comprises an upper steel plate, a lower steel plate, a plurality of springs, an upper fixing bolt and a lower fixing bolt, wherein the multiple springs are uniformly arranged between the upper steel plate and the lower steel plate; the upper fixing bolt and a hole corresponding to the upper fixing bolt are formed in the center of the upper steel plate; a hollow limiting pipe is fixedly arranged on the lower side of the center of the upper steel plate; the lower fixing bolt and a hole corresponding to the lower fixing bolt are formed in the center of the lower steel plate; the lower fixing bolt is higher than the surface of the lower steel plate; the hollow limiting pipe can limit vertical movement of the lower fixing bolt in the pipe; the upper surface of the upper steel plate is attached to an upper rubber layer; the lower surface of the lower steel plate is attached to the lower rubber layer. The damper is easy to mount and low in manufacturing cost, and the defects of instable center of gravity of an existing spring damper and higher manufacturing cost and cost of a hydraulic damper are overcome.

The invention discloses adjustable slitting equipment special for model manufacturing. The adjustable slitting equipment special for model manufacturing comprises a fixing screw, a supporting frame, apower line and a base. An auxiliary supporting mechanism is arranged at the top end of the inner side of the base. A shell is driven to move by moving an L-shaped connecting plate, and the rotating plate is then rotated to drive a lead screw to rotate to enable a U-shaped block to be driven by the lead screw to move rightwards; meanwhile, the U-shaped block drives a fixed column to move rightwards so as to push a curved plate to rotate upwards, and the curved plate drives a round rod to rotate upwards when rotating upwards; and meanwhile, the round rod pushes a U-shaped plate to vertically move upwards, so that a connecting plate, a supporting plate and an extension supporting plate are pushed by the U-shaped plate to move upwards and be attached to the bottom of a model, models not located in a fixture are assistantly supported, and the mold cutting process is more stable.

The present invention provides an adaptive vibration isolator. The adaptive vibration isolator includes a hydraulic system, a first elastic member, a second elastic member, an upper top plate, and a vibration energy consumption device. The hydraulic system comprises a hydraulic cylinder, a piston and a piston rod, a first though hole is formed on the piston, and the first hydraulic chamber is communicated with the second hydraulic chamber via the first through hole. An upper top plate passes through the piston rod and the piston from the transmission portion and is connected to the vibration energy consumption device to drive the vibration energy consumption device to move relative to the piston and adjust the effective aperture of the first through hole.

The invention discloses a bidirectional steel rail lip polishing machine, and belongs to the technical field of railway maintenance equipment. The bidirectional steel rail lip polishing machine comprises a machine frame and is characterized in that the bidirectional steel rail lip polishing machine further comprises a horizontal feeding device and a traveling device; the horizontal feeding device comprises a grinding wheel, a gear accelerating box, a movable platform, a horizontal sliding block, a driving mechanism, a pulse motor and a ball screw pair; an output shaft of the gear acceleration box is connected with the grinding wheel, and an output shaft of the gear acceleration box is connected with the driving mechanism; the traveling device comprises a driving gear, a driven gear, a traveling wheel, an idler wheel and a motor; and the driving gear is connected with a motor shaft of the motor, and the driven gear is in engaged transmission with the driving gear. According to the bidirectional steel rail lip polishing machine, a steel rail lip can be polished transversely and longitudinally at the same time, manual adjustment is not needed, different feeding quantities can be selected according to steel rail lips with different thicknesses, one-time polishing is achieved, the polishing speed is constant, and the overall polishing effect of the steel rail lips can be effectively ensured.

The invention relates to an indoor air quality detection device. The indoor air quality detection device comprises an air collecting bottle, wherein a motor is fixedly arranged at the top surface of the inner wall of the air collecting bottle; an output shaft of the motor faces down, and fan blades are fixedly arranged at the output shaft of the motor; electrode plates are respectively fixedly arranged at both sides of the motor, and are respectively connected with a positive electrode wiring point circuit and a negative electrode wiring point circuit of the motor; guide sleeves are respectively fixedly arranged at both sides of the back surface of the inner wall of the air collecting cylinder through fixed frames; the centerlines of the two guide sleeves are positioned on one line, and are respectively vertical to one side of the air collecting cylinder; a movable rod is arranged in each guide sleeve, and penetrates through the corresponding guide sleeve; the periphery of each movablerod is in contact fit with the inner wall of the corresponding guide sleeve. The indoor air quality detection device has the advantages that the size of indoor space is not limited; when the indoor space is larger, a flexible pipe is longer, and the period of air entering the air collecting cylinder until the motor stops work is longer; when the indoor space is smaller, the flexible pipe is shorter, and the period of air entering the air collecting cylinder until the motor stops work is shorter; the application range is broader.