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78results about How to "Reduce axial thickness" patented technology

Zoom lens and imaging system incorporating it

The invention relates to a small-format yet high-performance two units or three units type zoom lens with a negative unit at the front, which has a zoom ratio of about 3, an angle of view of as wide as 60° at the wide-angle end and high image-formation capability, and is much less susceptible to chromatic blurring, with a compact lens barrel. The zoom lens comprises a first lens unit G1 of negative refracting power and a second lens unit G2 of positive power, wherein zooming is implemented by varying the space between the lens units. The first lens unit G1 is made up of one negative lens L11 and one positive lens L12, two in all, and satisfies specific conditions with respect to their refractive index and Abbe constant.
Owner:OLYMPUS CORP

Outer rotor of motor for traction machine

The invention discloses an outer rotor of a motor for a traction machine. The outer rotor comprises a machine seat, a traction wheel arranged on the machine seat, and the motor driving the traction machine to rotate. The machine seat is composed of a bottom plate and a vertical plate, both of which are vertically arranged. The inner end surface of the vertical plate is fixedly provided with a support shaft parallel to the bottom plate. One end of the support shaft is fixed on the vertical plate and the other end of the support plate is suspended. The inner wall of the traction wheel is fixedly provided with a permanent magnet such that the motor rotor and the traction wheel are combined as one. A motor stator is fixed on the vertical plate. The traction wheel has an end surface. The motor stator is positioned between the vertical plate and an end surface. A rotary shaft extends out of the position, facing the support shaft, of the end surface of the traction wheel such that the traction wheel rotates around the support shaft. The rotary shaft is axially overlapped with the support shaft. The outer rotor of the motor for the traction machine has following beneficial effects: by means of the traction wheel, the motor rotor, the rotary shaft of the traction wheel and the support shaft of the machine seat, axial overlap can be achieved. The axial thickness of the traction wheel is shortened so that the ultra-thin design is realized. Cost is reduced and the installation process is simplified. Management and maintenance are conveniently carried out. The final-period maintenance cost of an elevator is decreased.
Owner:曾海平

Central support for laser pipe cutting

The invention relates to the field of laser cutting devices, in particular to a central support for laser pipe cutting. The outer ring of a large-through-hole bearing is fixed to a fixing base. A frameless motor is arranged on one side of the large-through-hole bearing. A slip ring is arranged on the other side of the large-through-hole bearing. A rotor of the frameless motor, the inner ring of the large-through-hole bearing and a rotary slip ring body of the slip ring are connected in sequence and have the same rotation axis. An idler wheel connecting disk is fixed to the rotating slip ring body, and the rotation axes of the idler wheel connecting disk and the rotating slip ring body are identical. Two pairs of parallel guide rails are arranged on the other side of the idler wheel connecting disk, wherein the two pairs of parallel guide rails are perpendicular to each other. Each pair of parallel guide rails is movably provided with two sliding plates. Each sliding plate is provided with an idler wheel. The four idler wheels face the rotation axis of the idler wheel connecting disk. Each idler wheel is connected with a stepping motor. The frameless motor and the stepping motors are connected with an externally arranged controller. By the adoption of the central support for laser pipe cutting, stable and synchronous rotation of the pipes can be achieved; the central support is suitable for supporting various pipes, and the cutting precision is high.
Owner:WUHAN TIANQI LASER EQUIP MFG

End Play Measurement Apparatus for Linear Actuators

An measurement apparatus for measuring end play of a linear actuator features a dial indicator and a primary mounting clamp. A plunger of the dial indicator is displaceable back and forth to cause an indicator needle to move about a graduated dial to reflect a measurement of said displacement. The primary mounting clamp has a clamp body configured to releasably clamp onto an output rod of said linear actuator, and a dial support body projecting outwardly from said clamp body. The dial support body is configured to the support the dial indicator thereon in a working position in which the plunger reaches axially along the output rod toward a gear housing of said linear actuator to abut against a contact surface carried on a stationary portion of the actuator relative to which the output rod undergoes displacement during operation of said actuator.
Owner:SCHULTZ KENNETH D

Synchronizer and speed changer

In order to solve the technical problems of longer gear shifting idle stroke, second impact and the like in the prior art, the invention provides a synchronizer and a speed changer. The synchronizer comprises a synchronizer gear sleeve, a synchronizer gear hub, synchronizing rings and combining gears, wherein each synchronizing ring comprises a circular ring body; a locking lug boss is arranged on the outer ring surface of each circular ring body; an axially communicated position avoiding groove is formed in the outer peripheral surface of the synchronizer gear hub; the locking lug boss can move in the axial direction in the corresponding position avoiding groove; one end of the locking lug boss near one side of the synchronizer gear hub is provided with two first locking surfaces; an included angle is formed between the first locking surfaces; the inner peripheral surface of the synchronizer gear sleeve is provided with locking opposite teeth used for locking the locking lug boss; and two second locking surfaces corresponding to the two first locking surfaces are arranged on the end surfaces of the locking opposite teeth. The synchronizer is favorable for cost control; meanwhile, the axial arrangement space of the synchronizer is reduced; the gear shifting secondary impact and the gear shifting noise are reduced; and the scheme is favorable for integral arrangement structure compactness of the speed changer.
Owner:GUANGZHOU AUTOMOBILE GROUP CO LTD

Traction machine for elevator

The invention discloses a traction machine for an elevator. The traction machine for the elevator comprises a motor, a collecting ring assembly, a fixed frame and a rotary frame. The collecting ring assembly comprises a plurality of conducting rings and a plurality of electric brushes. Each electric bush mutually contacts each corresponding conducting ring. The fixed frame comprises a fixed machine seat and a main shaft. The main shaft and the fixed machine seat are connected fixedly with each other. An electric brush installing part is arranged on the fixed frame. The plurality of electric brushes are arranged fixedly on the electric brush installing part. A rotor coil of the motor is connected electrically with the electric conducting ring through an electric conductor. The function of delivering electric power to the rotor coil is achieved by the conducting ring, the electric brushes and the electric conductor. According to the traction machine for the elevator, permanent magnetic steel with high cost is saved and cost of the traction machine is reduced obviously. The electric brushes and the conducting rings are arranged near the hollow portion of the main shaft so that inner space of the traction machine is fully used, the axial thickness of the complete machine is reduced so that the complete machine is thinned and applicable to an elevator with a small motor room or no motor room and the like and with requirement of thin traction machine.
Owner:SHANGHAI MITSUBISHI ELEVATOR CO LTD
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