37results about How to "Limited rotational movement" patented technology

The device comprises: a piece fixed to the container, having a lateral fluid output opening and a passage allowing the entry of air; a movable piece comprising a tube having a lateral fluid output opening, the tube being movable rotationally in the fixed piece and in axial translation between a maximum pushing-in position and an extraction position where the lateral openings can be brought into coincidence by rotation of the movable piece. The movable piece comprises an internal skirt making it possible to channel the fluid towards the output opening in order to prevent leakages through the air entry passage. The fixed piece comprises means for guiding the displacement of the movable piece with respect to the fixed piece from the maximum pushing-in position to the extraction position with coincidence of the openings.

A cable protection and guide device in which wear damage in mounting portions of a mounting bracket is avoided and the mounting bracket is reliably and strongly mounted so that the cable is smoothly protected and guided. The mounting operation of the bracket is easy. A cable protection and guide device includes a mounting bracket having a mounting hole which surrounds and accommodates a tap bolt. A threaded portion 162 of the tap bolt includes a metallic bush 170 and the length H 1 of the metallic bush 170 in a bolt inserting direction is shorter than the length H 2 of the mounting hole 143 in a bolt inserting direction.

The invention relates to an apparatus, a rock drilling rig and a method for rock drilling. The device comprises a turning device (TD) for moving a drilling tool (8) around its longitudinal axis. The rotational movement (T) is controlled by means of an alternating rotational system (ATS) such that the direction of the rotational movement is continuously reversed to the first rotational direction and the second rotational direction. The angle of rotation of the drilling tool is limited and a safety system (SS) is configured to monitor the operation and ensure that a predetermined angle of rotation is not exceeded.

The invention discloses a machining technology for a gear hole of which the diameter is larger than 16mm. The machining technology comprises the following steps: selecting machining equipment and cutting tools; clamping a workpiece and locating the workpiece by using an angular locating device; compiling the machining technology and machining program; separately putting a strong drill bit used fordrilling and a strong drill bit used for reaming in the corresponding blade guards of the program and carrying out adjustment; using the strong drill bit used for drilling to machine a bottom hole ofthe gear hole, reserving a 0.1-1mm reaming allowance in the radius direction, and keeping the supply of water-soluble cooling liquid in the whole machining process; using the strong drill bit used for reaming to carry out reaming; and during reaming, setting the linear speed of the strong drill bit at 30-40m / min and setting the feeding speed at 0.07-0.12mm / r. The smaller the reaming allowance, the higher the linear speed and the feeding speed, and the supply of the water-soluble cooling liquid is kept in the whole machining process. By using the specific strong drill bits, the machining process of the gear hole can be finished through the drilling and reaming two procedures, the machining efficiency is high, and the repeated use rate is higher.

The invention discloses a bobbin and an assembling method thereof. The bobbin comprises a roller body and stop plates which are arranged at the two ends of the roller body; the roller body is integrally manufactured and formed and comprises a coiled pipe and stop edges which are formed at the two ends of the coiled pipe; an annular groove is formed in the inner side of each stop edge at the corresponding end part of the coiled pipe; a first notch groove is formed in each stop edge; a stop block is arranged at the position, on each annular groove, on the inner side of the corresponding stop edge; a through hole is formed in the intermediate position of each stop plate; a second notch groove is formed in the edge of each through hole; each through hole is formed in the corresponding annular groove in a sleeving manner; each stop block is arranged in the corresponding second notch groove to prevent the corresponding stop plate from rotating. When the bobbin is assembled, the stop edge at one end of the roller body is clamped into the through hole of the corresponding stop plate, one side of each stop edge is clamped into the corresponding second notch groove, each first notch groove in the other side of the corresponding stop edge is clamped at the edge of the corresponding through hole, and the roller body is rotated clockwise until the stop blocks are clamped into the second notch grooves and the through holes are completely formed in the annular grooves in the sleeving manner. The bobbin is detachable and is convenient to transport, so that the transport cost is reduced; the bobbin is assembled easily and quickly, so that the production efficiency can be improved; the quality is more stable because of the integrated roller body of the bobbin.

The invention relates to a vortex oscillator. A motor is fixed on a motor base, and a rotating shaft of the motor is in transmission connection with an eccentric shaft; a plastically deformable control support is mounted on the eccentric shaft through a bearing, and the plastically deformable control support and the eccentric shaft can rotate relative to each other; an upper support plate and a lower support plate are arranged above and below the plastically deformable control support respectively, an upper counterweight is arranged at the top end of the eccentric shaft, and a lower counterweight is arranged on the lower support plate; a sample block is arranged on a sample block support plate, and the sample block support plate is arranged on the upper support plate through an isolation column; the bottom of a pillar and the motor base are relatively fixed, and the top of the pillar is connected with the plastically deformable control support. The vortex oscillator provided by the invention can effectively limit the autorotation motion of the sample block and ensure the stable revolution motion of the sample block, and enables a reagent placed in a test tube in the sample block to produce a stable vortex so as to achieve an excellent uniform mixing effect.