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

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.

The invention provides a reciprocating type washing machine. The reciprocating type washing machine comprises a washing bucket, an upper cover, a transmission mechanism, a piston and a driving device, wherein the upper cover is movably connected to an opening of the washing bucket, the washing bucket comprises an upper portion and a lower portion, the upper portion of the washing bucket is used as a washing cavity for containing/washing clothes, the piston is arranged in the washing cavity, the lower portion of the washing bucket is used as a control cavity, the transmission mechanism is arranged in the control cavity, the input end of the transmission mechanism is connected with the driving device, the transmission mechanism and the piston are in screw transmission, and the driving device drives the piston to perform up-down reciprocating motion in the washing bucket through the transmission mechanism. According to the reciprocating type washing machine, washing is performed through reciprocating extrusion on the clothes by the piston, the defects that an existing impeller type washing machine and a tumbling-box washing machine are serious in wear of the clothes and large in water consumption are overcome, and the better washing effect is achieved.

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.

An apparatus, rock drilling rig and method for rock drilling includes a turning device for moving a drilling tool around longitudinal axis of the tool. The turning movement is controlled by an alternating turning system so that direction of turning movement is continuously reversed to first and second turning directions. The turning angle of the tool is restricted and a safety system (SS) is configured to monitor the operation and to ensure that a predetermined turning angle is not exceeded.

An external door handle assembly, comprising: a handle carrier (3) fastened to an inner side (4) of a door, a handle element (11) mounted on the handle carrier (3), and a groove shell (5) which is allowed to be mounted by going through a door onset part (8) form the outer side (6) of the door, to stretch to the handle carrier (3) at the inner side (4) of the door, and to accommodate the handle element (11) which can be operated from the outer side (6) of the door. The handle element (11) is provided with a push button (27) for triggering an electronic door opening operation and allowed to be operated from the outer side (6) of the door. A solution in which a door handle is manufactured by mounting elements as less as possible, premounting is achieved through the handle form the inner side or outer side of the door, is achieved in such a way that: the handle element (11) is also provided with a handle main body (28) which is configured to trigger a mechanical opening process and to connect the handle element (11) and the handle carrier in a swing manner, and the push button (27) is rotatably supported relative to the handle main body (28).

The invention discloses an intelligent open type numerical control device which comprises a fixed bottom plate. A case integrated with the fixed bottom plate is arranged at the upper end of the fixedbottom plate; an intelligent controller is arranged on the right side of the front end surface of the case; a closing door is arranged on the left side of the front end surface of the case; a hydraulic fixture is arranged at the lower end of a working space; a supporting block is fixedly connected to the upper end of a rear end wall of the working space; a lifting tank with a downward opening is arranged at a position, corresponding to the hydraulic fixture, at the front end of the supporting block; a lifting rod is arranged in the lifting tank; and the lower end of an adjusting rod penetratesthrough a lower end wall of a rotary space and is fixedly connected with a cutter inserting bar. When the intelligent open type numerical control device provided by the invention works, different program chips are selected according to different workpieces to be processed, so that the occurrence of the phenomenon of program losing caused by machine tool breakdown is effectively prevented; programs can be copied directly, so that the working efficiency is improved; and a transmission shaft drives the cutter inserting bar to rotate, so that the angle adjustment of different spiral angles of a gear to be processed is realized.

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 provides a dual-mode parking electromagnetic valve of an electro-hydraulic speed regulator. The dual-mode parking electromagnetic valve mainly comprises a shell, a coil, an iron core, an iron core seat, a spring, a spring seat, a steel ball, an iron core limiting mechanism and an ejector rod assembly. When the iron core limiting mechanism and the ejector rod assembly are arranged at the initial positions, the movement range of the steel ball can be set, and the iron core base and the spring base are each provided with a sealing face matched with the steel ball. After the parking electromagnetic valve is powered on or powered off, the steel ball is separated from the sealing surface of the iron core seat or the spring seat, so that the speed regulator controls oil to release pressure, the power piston is further caused to move towards the oil reducing direction, and the diesel engine parking effect is achieved. The two modes of power-on parking and power-off parking of the electro-hydraulic speed regulator under different working conditions can be met, safe parking of a diesel engine is guaranteed, and the device has the advantages of being compact in structure and convenient to install and adjust.

The invention provides an anti-rotation device, a motion table system and a lithography device. The anti-rotation device is connected between a workpiece table and a cable station and is used for limiting the unexpected angle rotation motion of the workpiece table around a shaft perpendicular to a plane where the workpiece table is located relative to a cable bench, the anti-rotation device comprises a crossing flexible connecting rod module, the two ends of the crossing flexible connecting rod module are respectively rotationally connected with the workpiece table and the cable bench; when the workpiece table is moved in a first direction, the crossing flexible connecting rod module can be compressed or extended in the same direction, the connection positions of the crossing flexible connecting rod module and the working table and the cable bench remain unchanged in a second direction, the first direction is the shortest ligature direction between the workpiece table and the cable bench, and the second direction is perpendicular to the first direction in the same plane. When the crossing flexible connecting rod module is flexible, the connection positions between the crossing flexible connecting rod module and the workpiece table and the cable bench remain unchanged so as to avoid the resistance to the motion of the motion table by motion of the connection points in a non-flexible direction.