7results about How to "Prevent co-rotation" patented technology

This utility model relates to a welding device for boiler water-cooled wall components, including a welding torch, a rotating device, and a magnetic chuck device. The rotating device includes a first gear, a second gear, a third gear, a fourth gear, a motor, a motor cage, a first shaft, and a second shaft. The magnetic chuck device includes a car body, a roof bushing, a first wheel, a second wheel, an electromagnet, a first worm gear, a first worm, and a first micro motor. The welding torch is installed in the rotating device. Two identical magnetic chuck devices are symmetrically arranged on both sides of the rotating device. The magnetic chuck device used in this utility model can be manipulated by personnel to attach to the vertical water-cooled wall and move on the boiler water-cooled wall. Since the water-cooled wall is made of metal, mostly steel, magnetic attraction can be generated by energizing the electromagnet. The rotating device allows the welding torch to rotate after the magnetic chuck device is fixed to the water-cooled wall, thereby adjusting to a suitable welding angle.

The utility model relates to a cable cutting device which comprises a working table, a cutting table is fixed to the center of the top face of the working table, a supporting frame is fixed to the top face of the working table, electric push rods are fixedly installed on the left side and the right side of the inner top wall of the supporting frame, and installation plates are fixed to the bottom ends of the two electric push rods. A fodder chopper is arranged under the mounting plate, and a dismounting and mounting mechanism is arranged on the fodder chopper; the dismounting and mounting mechanism comprises a driving assembly arranged on the mounting plate, a dismounting and mounting assembly arranged on the driving assembly and a limiting assembly arranged on the dismounting and mounting assembly. The cable cutting device is provided with the driving assembly and the dismounting assembly, a rotating handle is used for driving a rotating rod to rotate, a driving bevel gear and a driven bevel gear are used in cooperation to drive a threaded rod to rotate, a movable plate is further used for driving a limiting rod to be pulled out of a limiting groove formed in a fixing base, and therefore the dismounting process of a fodder chopper is achieved; and the guillotine can be conveniently replaced after being passivated.

This invention discloses a silicon ring polishing device, belonging to the technical field of polishing equipment, including a base column, an inner ring polishing mechanism, and an outer ring polishing mechanism. Through the arrangement of the inner and outer polishing mechanisms, the inner and outer walls of the silicon ring can be polished simultaneously. The rotation direction of the outer disk controlled by the first motor is opposite to the rotation direction of the polishing ring, avoiding the silicon ring from rotating together during polishing in the same direction, thereby improving the polishing effect. Simultaneously, during polishing, the outer polishing mechanism can hold the silicon ring in place, preventing it from falling off.

The invention relates to a side-channel compressor for a fuel cell system for compressing a fluid, comprising a housing having a housing upper part and a housing lower part, the housing upper part having a bearing journal extending along a rotational axis, the bearing journal having a housing lower part, and the housing lower part having a bearing journal extending along a rotational axis. The bearing journal has a journal root section and a journal main section, a first bearing and a second bearing are arranged on the journal main section, a compressor wheel assembly having a compressor wheel is arranged in the housing on the bearing outer ring in a rotatable manner about the axis of rotation, and the compressor wheel assembly is arranged in the housing on the bearing outer ring in a rotatable manner about the axis of rotation. According to the invention, the side channel compressor has a journal tensioning section, the journal main section being arranged between the journal root section and the journal tensioning section, and the housing upper part being at least indirectly tensioned with the bearing via a central screw.

An automatic locking device and unit, comprising driving motor, locking block and fixed block arranged in sequence from bottom to top, the output end of the driving motor is provided with the locking block, the locking block can be connected to the component to be locked, the fixed block is provided with the fixed groove for placing and limiting the rotation of the product, and the product can be movable along the axial direction of the fixed groove, and the driving motor drives the locking block to tighten the component to be locked. It can be seen that the difference between the utility model and the prior art lies in that an inverted layout scheme is adopted, that is, the driving motor is arranged below, and the locking block and the fixed block are arranged upward in sequence, so that the whole locking execution mechanism is no longer limited by the superimposed height of the product and the component to be locked. The inverted structure effectively solves the problem that the existing upright locking device has high requirements on the installation space height, thereby improving the adaptability of the device in the space limited occasions.

This utility model discloses a cultivation device for testing the salt tolerance of rice, including a box body. Multiple cultivation troughs are respectively opened on the front and rear sides of the upper end of the box body, and cultivation cups are placed in each trough. A left-right moving component is provided in the middle of the upper end of the box body, which can move left and right on the box body. An irrigation component is provided on the moving component, and a cleaning component for cleaning the cultivation cups is provided on the right side of the box body. This utility model automatically irrigates the cultivation cups on the box body by moving the irrigation component, reducing manual irrigation. The cultivation cups are distributed on both sides of the box body, facilitating observation of rice growth and salt tolerance testing. After cultivation, the cultivation cups are removed, the soil is poured out, and the cleaning component cleans them, allowing the cultivation cups to be reused and reducing the impact of the previous test on the next test.

A side channel compressor for a fuel cell system for compressing a gaseous medium has a housing with a first housing part having a bearing journal extending along an axis of rotation and having a journal root section and a journal main section, and a second housing part having a bearing journal extending along an axis of rotation. A bearing inner ring of the bearing device is arranged on the journal main section, and a compressor wheel assembly having a compressor wheel is arranged in the housing on a bearing outer ring of the bearing device in a rotatable manner about an axis of rotation and can be driven by means of a drive, the first housing part is at least indirectly tensioned with the bearing device via a fastening element, in particular in the direction of the axis of rotation, a spring element is arranged between the bearing device and the first housing part. The heating disc is arranged in the region of the journal root section, and the heating disc extends around the bearing journal in particular in a circumferential manner. The heating disc is attached to the spring element in the direction of the rotation axis.