130 results about "Revolute joint" patented technology

This invention relates to a cooling and lubrication device for longitudinal grooved tube rolling liners, comprising the following components: a circulating pump for circulating and supplying lubricating fluid, the circulating pump being positioned below a support frame, the outlet of the circulating pump being connected to a rotary joint fixed on the support frame via a conduit eight, the rotary joint being connected to the liner via a delivery pipe and supplying lubricating fluid into the liner; a collection tank positioned below the liner installation position in the rolling mill, for collecting lubricating fluid discharged from the steel pipe, the collection tank supplying the lubricating fluid to a purification and chip removal mechanism via a return pipe, thereby removing metal debris carried in the lubricating fluid and purifying it; and a temperature control system, which draws in the purified lubricating fluid from the purification and chip removal mechanism via a conduit six, adjusts its temperature, and then supplies it to a collection tank via a conduit seven, so that the circulating pump can supply the lubricating fluid in the collection tank to the liner. This cooling and lubrication device for longitudinal grooved tube rolling liners provides stable and reliable cooling and lubrication for the liners during the rolling process.

An improved anti-slip device for a shoe sole of the type provided with anti-slip or anti-lateral slip means such as nails or gripping hooks, wherein such means are fixed to a rigid or semi-rigid means that can be folded into grooves obtained in the shoe sole itself, rather than being directly fixed to the shoe sole, and each anti-slip member (10) and its member (24) fixed to the shoe sole and provided with its own snap fastening means (25) are non-disassemblable by a joint (14) having a double-ended steel pin (15) with a protruding end that forms a pivot axis from which the anti-slip member (10) can rotate 180°, the joint having an eyelet (18) and a protruding attachment (16) on the opposite side that forms a pivot center of 90° of the axle (26) of the member element (24) fixed to the shoe sole, and is perpendicular to the steel pin (15) so that the fixing member (24) cannot be separated from the anti-slip member (10). Once the joint (14) is molded from a suitable plastic material, it is incorporated by overmolding using another plastic material having a different melting point, and together with the fastening member (24) and the anti-slip member (10), thus avoiding accidental separation of the assembly while maintaining the degrees of freedom of movement of the different components.

The utility model discloses a diamond drilling device which comprises a machine box, a machine frame connected to the machine box, a lifting base connected to the machine frame through a lifting mechanism, a pull rod connected to the bottom face of the lifting base, a bearing plate connected to the lower end of the pull rod, a through hole formed in the center of the bearing plate, and a first sleeve connected to the bottom face of the bearing plate. The periphery of the first sleeve is rotatably connected with a second sleeve, the lower end of the second sleeve is connected with a pre-drill bit, and the bottom surface of the bearing plate is provided with a first driving mechanism for driving the second sleeve to rotate; the center of the bottom face of the lifting base is connected with a first air cylinder, the telescopic end of the first air cylinder is connected with a telescopic rod through a rotary connector, the top face of the bearing plate is rotationally connected with a third sleeve, and the telescopic rod is in spline connection in the third sleeve. And a second driving mechanism for driving the third sleeve to rotate is arranged on the top surface of the bearing plate. Through pre-drilling, rapid drilling, rough machining and stress release are achieved, and the problem of edge breakage of superhard material drilling is solved.

The utility model relates to a pressure pipeline leakage point detection device, which belongs to the technical field of pipeline detection and comprises a mounting groove, a moving frame, a driving mechanism, a bearing seat and a rotating shaft, a pressing disc is fixed at the inner end of the rotating shaft, an air passage is arranged in the rotating shaft at the left end, a sealing gasket is fixed on the inner side wall of the pressing disc, and the inner end of the air passage extends to the inner end face of the sealing gasket. The rotating shaft is connected with a power mechanism driving the rotating shaft to rotate, a rotating connector is fixed to the outer end of the rotating shaft at the left end, an air delivery pipe is fixed to the other end of the rotating connector, an air pump is fixed to the other end of the air delivery pipe, and a valve and a pressure gauge are arranged on the air delivery pipe. Through the pressing discs on the two sides and the driving mechanism for driving the two pressing discs to be close to and far away from each other, the sealing gaskets and the rotating joints which are arranged on the pressing discs are matched, the gas conveying pipe is fixed at the other end of each rotating joint, and the gas pump is fixed at the other end of each gas conveying pipe, so that the pressure pipeline detection device can adapt to detection of pressure pipelines with different diameters and lengths and is simple and rapid to operate; and the detection efficiency is improved.

The utility model relates to the technical field of suction equipment part manufacturing, and discloses a flexible suction pen head based on a rotatable joint, which comprises a base, the lower surface of the base is fixedly connected with a motor, the output end of the motor is fixedly provided with a worm, the tooth end of the worm is meshed and connected with a worm gear, the inner wall of the worm gear is rotatably connected with a rotating rod, and the rotating rod is fixedly connected with the base. An electric push rod is fixedly connected to the lower surface of the base, a fixing plate is fixedly connected to the lower surfaces of the supporting legs, a fixing block is fixedly connected to the inner wall of the fixing plate, a lifting sliding block is slidably connected to the outer wall of the fixing block, an adjusting support is slidably connected to the inner wall of the lifting sliding block, and a storage assembly is arranged on the upper surface of the base. The motor is started to drive the worm to rotate the worm gear, the worm gear drives the rotating rod to enable the adjusting support to slide, the electric push rod is started to drive the lifting sliding block to enable the adjusting support to rotate, and the assembly can achieve the effect of adjusting the position of the pen point.

The utility model discloses an anti-loosing rear positioning tool for a numerically controlled lathe, which relates to the technical field of positioning tools and comprises a rotary joint and a mounting head, the mounting head is arranged on the rotary joint, left-hand external threads are arranged on the outer surface of the mounting head, right-hand internal threads are arranged on the inner surface of the mounting head, and the left-hand external threads and the right-hand internal threads are arranged on the outer surface of the mounting head. A rear positioning part is connected through the left-hand external thread, a positioning screw is mounted through the right-hand internal thread, and a ratchet wheel is arranged on the surface of the rear positioning part; and the pawl is arranged on the rotary joint and is meshed with a ratchet wheel arranged on the rear positioning surface. When the rear positioning device is used, the ratchet wheel is locked anticlockwise and rotates anticlockwise, the rear positioning device is jacked by the internal positioning screw, so that the rear positioning device cannot move anticlockwise and is clamped by the pawl clockwise, the rear positioning device cannot loosen in the machining process, and the product quality is ensured.

The utility model relates to the technical field of pharmaceutical mechanical equipment, in particular to a forced lubricating device for a lower punching hole of a tablet press, which comprises an upper punching disc and a lower punching disc, and the upper punching disc is mounted at the upper end of the lower punching disc; the end cover is fixed on the equipment main shaft, and a channel is arranged in the end cover; the oil filling pipe is connected with the end cover through a flange, and one end of the oil filling pipe is connected with a rotary joint; the number of the pipe joints is two, one pipe joint is fixed to the surface of the end cover and communicated with the channel of the end cover, and the other pipe joint is installed on one side of the bottom of the lower punching disc; by means of pressure conveying of the oil filling pipe, the rotary connector and the hose, lubricating oil can directly reach the lower punching hole, the lubricating efficiency is improved by more than 60%, and the blocking problem caused by insufficient gravity is avoided.

The utility model discloses an auxiliary device for cutting a rectangular chamfer, which belongs to the technical field of part processing and structurally comprises a limiting piece, a handle and a rotary joint. Wherein the handle is arranged at the upper end of the guiding piece, the lower end of the guiding piece is connected with the limiting piece, the head end of the connecting piece is rotationally provided with the rotating connector, the angle grinder is installed at the front end of the rotating connector and can synchronously rotate along with the rotating connector, and therefore the machining angle of the angle grinder can be adjusted by rotating the rotating connector. During use, the limiting piece is suitable for sliding on the surface of a workpiece and is connected with the guiding piece, a connecting piece is arranged in the guiding piece in a sliding mode, the connecting piece is always parallel to the limiting piece, and the connecting piece is suitable for vertically translating along the guiding piece. The connecting piece is connected with the angle grinder through the rotating joint, so that the vertical moving position of the angle grinder can be adjusted by adjusting the connecting piece, and the size and the shape of a machined chamfer are adjusted.

The utility model discloses a pipe wall washing machine device which comprises a machine body and a high-pressure washing device, a spray gun connector is arranged at the water outlet end of the high-pressure washing device, the upper end of the machine body is fixedly connected with a U-shaped frame, an L-shaped piece and a connector fixing clamp, the U-shaped frame is fixedly provided with a hydraulic motor through a fastener, and the outer side of the L-shaped piece is connected with a spray gun pipe. The portion, located on the outer side of the L-shaped piece, of the spray gun pipe is further fixedly sleeved with a large gear, the power end of the hydraulic motor movably penetrates through the L-shaped piece and then is fixedly connected with a small gear, the small gear is meshed with the large gear, four sets of symmetrical wheel shafts are rotationally arranged on the outer side of the machine body in a penetrating mode, and the outer side ends of the wheel shafts are fixedly sleeved with wheels. And a rotary joint is rotationally arranged at the other end of the fixed joint through a sealing bearing and is fixedly connected to the spray gun pipe. The robot is used as a carrier to automatically clean the wall of the pipeline, the cleaning effect is better, the situation that the pipeline is blocked in the cleaning process is avoided, and the practical effect is obvious.

Disclosed are pin swivels. In at least one example embodiment, a pin swivel includes a housing attachable to a mechanical assembly and a spool rotationally supported by the housing. In at least one example embodiment the housing includes at least one port configured to connect to at least one hose to receive at least one fluid from the at least one hose, and at least one channel configured to transfer the at least one fluid to at least one fluid transfer area. In at least one example the spool has at least one channel in fluid communication with the at least one fluid transfer area of the housing to receive the at least one fluid from the at least one fluid transfer area, and at least one port configured to receive the at least one fluid from the at least one channel of the spool.

This invention discloses a hoisting device for auxiliary installation of rubber rings in reinforced concrete drainage pipes, belonging to the field of municipal water supply and drainage pipeline construction technology. The hoisting device includes a hoisting drive device with a steel cable assembly. A steel cable connecting assembly is installed at one end of the steel cable assembly. A rotary joint is fixedly connected to the bottom of the steel cable connecting assembly. A mounting bracket opening and closing mechanism is installed at the bottom of the rotary joint. A clamping connection mechanism is slidably connected to one side of the mounting bracket opening and closing mechanism, and a guiding transmission mechanism is fixedly connected to one side of the clamping connection mechanism. A collar mechanism is slidably connected to the outer wall of the guiding transmission mechanism. This invention designs a clamping connection mechanism and a collar mechanism, enabling pre-fabrication and automatic installation and fixation of the rubber ring, achieving precise pushing and installation of the rubber ring and ensuring sealing quality.

A spatial parallel mechanism comprises a platform. Three or more legs configured for extending from a base or ground to the platform, each leg has a distal link, one or more distal joint providing one rotational degree of freedom (DOF) about a distal rotational axis, the distal joint connecting a distal end of the distal link to the platform. A proximal joint provides at least two rotational DOFs at the proximal end of the distal link. Assemblies of joints and links provide DOFs to each said leg between the proximal joint and the base or ground. The distal rotational axes of the three legs are parallel to one another.

The invention relates to the technical field of steel pipes, in particular to a seamless steel pipe cold-drawing polishing device which comprises an end plate, a driving wheel and two correspondingly arranged driven wheels are rotationally installed on the surface of one side wall of the end plate in a triangular shape, the driving wheel and the driven wheels are connected through abrasive belts, and the driving wheel and the driven wheels are each of a hollow structure. A first rotating connector is installed on the back face of the end plate corresponding to the driving wheel in a penetrating mode, the outer wall of the first rotating connector is fixedly sleeved with a gear ring, the outer wall of the gear ring is meshed with a gear, and the gear is fixed to the outer end of a transmission shaft of the servo motor. In the grinding process of the abrasive belt, negative pressure is generated through the obliquely-arranged dust collection cover under the action of the exhaust fan, so that chippings generated in the grinding process and attached to the surface of the abrasive belt can be sucked away, flowing of air around the abrasive belt can be accelerated while the chippings on the surface of the abrasive belt are sucked away, and therefore the abrasive belt is prevented from being damaged. Therefore, part of heat can be taken away, and the service life of the abrasive belt can be prolonged.

A connection device for a tire inflation system. The connection device includes a swivel joint and a hose assembly. A body of the hose assembly is insertable into and removable from a receiver cavity of the swivel joint when in a first rotational position. A locking protrusion of the hose assembly is received in a locking opening of the swivel joint to secure the body to the swivel joint when in a second rotational position.

The utility model provides a cooling structure of a ball screw, which relates to the technical field of mechanical transmission component cooling and comprises a mounting frame, two bearing seats are fixedly mounted at the top of the mounting frame, a ball screw body is fixedly inserted between the interiors of the two bearing seats, and a heat conduction groove is formed in one side of the outer wall of the ball screw body. And the outer surface wall of the ball screw body fixedly communicates with two rotating joints. According to the cooling device for the ball screw, efficient heat dissipation of the ball screw is achieved under the interaction of all the components of the device, it is guaranteed that the temperature of the ball screw is stable and controllable in the using process, cooling water can accurately cool key parts in the ball screw in the circulating flowing process, and the service life of the ball screw is prolonged. And meanwhile, the cooling water absorbing heat is subjected to real-time heat dissipation treatment through the external heat dissipation module, it is ensured that the cooling water flowing circularly keeps a low enthalpy value all the time, and therefore heat generated by operation of the lead screw is continuously and efficiently taken away.

The invention relates to the technical field of new energy automobile charging equipment, and discloses a heavy truck charging pile gun line power assisting device which comprises a mounting base, a rotary connecting seat, a rotary driving shaft and a rotatable suspension arm assembly, the rotatable suspension arm assembly comprises a main suspension arm and a telescopic auxiliary arm, one end of the main suspension arm is rotatably arranged on the rotary driving shaft in a sleeving mode, and the other end of the main suspension arm is rotatably arranged on the telescopic auxiliary arm in a sleeving mode; the telescopic auxiliary arm is arranged in the main suspension arm, can horizontally rotate around the main suspension arm and is telescopically arranged in the main suspension arm; the gun line hanging assembly is installed at one end of the telescopic auxiliary arm and used for bearing a charging gun line, and the gun line hanging assembly comprises a rotating connector allowing the whole gun line hanging assembly to freely rotate around a vertical axis and a buffer spring used for absorbing impact; the whole weight of the gun line is borne through the rotatable and telescopic suspension arm assembly, and the moment generated by the gravity of the gun line can be dynamically counteracted in combination with an intelligent resistance adjusting system based on real-time detection. And the charging operation efficiency and the personnel comfort are greatly improved.

The utility model provides a mechanical arm sheath which comprises a flexible sheath, one end of the flexible sheath is fixedly provided with a large-opening rotary joint, the other end of the flexible sheath is fixedly provided with a small-opening rotary joint, and the large-opening rotary joint and the small-opening rotary joint are respectively provided with corresponding hoops; due to the overall arrangement, the protective sleeve can be better combined with the head end and the tail end of the mechanical arm, gaps are prevented from being formed in the connecting position of the mechanical arm and the protective sleeve, and therefore the whole protective sleeve has a better sealing effect in the using process.

The utility model relates to the technical field of tobacco processing equipment maintenance accessories, in particular to an expanded cut tobacco rotary joint maintenance kit which comprises a maintenance box, a sponge mat is arranged in the maintenance box, a dismounting mechanism is arranged in a placing groove of the maintenance box, a plurality of part replacement grooves are detachably connected to the sponge mat and used for storing maintenance parts, and a cover plate is hinged to the top of the maintenance box. And a cover sponge, a hasp and a handle are arranged in the cover plate. The dismounting mechanism comprises two semicircular fixing shells which can be spliced into a fixing ring, the fixing ring is provided with a threaded hole and a threaded column, one end of the threaded column is provided with a contact part and a rotating handle, the two fixing shells can be clamped through a clamping assembly on the fixing ring, and stable splicing of the fixing shells is guaranteed through cooperation of a clamping block, a limiting hole, a sliding groove, a wedge-shaped block and a reset compression spring.

This novel three-degree-of-freedom rotational decoupling mechanism belongs to the field of robotics technology. It addresses the insufficient decoupling capability of existing parallel mechanisms. The mechanism includes a moving platform and a fixed platform positioned vertically, connected by three circumferentially arranged branch mechanisms. Each branch mechanism includes a driving link and a driven link, both of which are obliquely arranged arc-shaped rods. The lower end of the driving link is hinged to the fixed platform via a first revolute joint, the upper end of the driving link is hinged to the lower end of the driven link via a second revolute joint, and the upper end of the driven link is hinged to the moving platform via a ball joint. In the three sets of first, second, and ball joints, the axes of any two points to the same point, the rotation center, around which the moving platform rotates. This invention features a simple structure, ease of manufacturing and assembly, motion decoupling, easy control, and good dynamic performance.

The utility model discloses a six-way rotary joint, which comprises a stator assembly and a rotor assembly, the rotor assembly is sleeved outside the stator assembly and is rotatably assembled with the stator assembly, the rotor assembly comprises a rotating body, the inner wall of the rotating body is axially provided with six annular oil grooves at intervals along the circumferential direction of the inner wall of the rotating body, the side wall of the rotating body is provided with six rotor welding straight-through joints which are communicated with the six annular oil grooves in a one-to-one correspondence manner; the stator assembly comprises a fixed shaft rotationally assembled with the inner wall of the rotating body, the right end of the fixed shaft is flush with the right end of the rotating body, the left end of the fixed shaft protrudes out of the left end of the rotating body, a flange is arranged at the left end of the fixed shaft through an inner hexagon screw, and six stator welding straight-through connectors are arranged on the side wall of the left end of the fixed shaft; and six oil channels of which the two ends are communicated with the stator welding straight-through joints and the annular oil grooves in a one-to-one correspondence manner are arranged in the fixed shaft. The utility model has the advantages of many passages, good sealing performance and high reliability.

The invention belongs to the field of hydraulic test equipment, and provides a shuttle-valve-free type small-diameter seamless steel pipe hydraulic test machine which comprises a water tank, a vertical plate is fixedly connected to one end of the interior of the water tank, a water outlet pipe is fixedly installed on the side face of the vertical plate, and a rotating connector is rotatably installed at one end of the water outlet pipe. A left end plate is fixedly installed on the rotating connector, and a clamping mechanism is installed at the other end of the interior of the water tank. According to the invention, the detection mechanism is arranged, and a plurality of detection assemblies are arranged on the detection mechanism, so that when the seamless steel pipe is deformed, the detection mechanism can detect a bulge on the seamless steel pipe and prompt a worker, thereby realizing the hydrostatic test detection of the seamless steel pipe, and compared with the visual inspection of the worker, the detection efficiency is improved. The device can detect tiny deformation on the seamless steel tube, so that the detection result is more accurate, missing detection and error detection are avoided, and the detection efficiency is greatly improved due to the fact that a plurality of parts on the seamless steel tube are detected at a time.

The utility model discloses a decoloring device for biological production of succinic acid, including the casing, casing inner chamber upper portion installs and drives the disc and the driven disc that sets up symmetrically along the vertical direction, installs a plurality of from inside to outside the active carbon filter element of setting in proper order by the drive disc and driven disc between, and the number of a plurality of active carbon filter elements increases from inside to outside in proper order, and the drive disc and driven disc are connected with through the multiple connecting rods of circumferential distribution, the top of drive disc is fixed with drive shaft connection, and the driven disc bottom is fixed with driven shaft connection, and the axis of drive shaft and driven shaft is arranged in line, drive shaft inside hollow, and the top of drive shaft is connected with the feed pipe through the swivel joint. The decoloring device provided by the utility model can solve the problems of low decoloring efficiency and long time, and can also solve the problems of uneven decoloring and unstable effect.

The utility model provides cantilever winding and unwinding equipment, which relates to the technical field of unwinding equipment and particularly comprises a spindle component, a movable frame component is mounted at the end of the spindle component, and a fixed underframe component is mounted at the end of the movable frame component. The main shaft assembly comprises a tensioning supporting plate, a main shaft, a tensioning guide sleeve, a tensioning air cylinder, a rotating connector, a synchronous belt wheel set and a main shaft bearing seat, the rotating connector is installed at the tail end of the main shaft, and the rotating connector is connected with the output end of the motor; the tensioning air cylinder drives the tensioning guide sleeve to slide on the surface of the main shaft, the tensioning guide sleeve pushes the tensioning supporting plate to be unfolded, the tensioning supporting plate tensions the paper rolls, the paper rolls of different sizes are conveniently supported, meanwhile, the rack drives the linear guide rail to slide on the supporting base through the guide rail fixing plate, the position of the main shaft assembly is conveniently adjusted, and the working efficiency is improved. And the usability of an operator is improved.

This invention discloses a five-DOF parallel robot with few branches for machining large curved surface components. It includes a static platform as a supporting base and a moving platform for posture adjustment. An unconstrained branch group is arranged between the static and moving platforms. A constraint branch is also arranged between the static and moving platforms, providing tilt adjustment support for the moving platform. A second revolute joint is provided at the upper end of the constraint branch, which is movably connected to the moving platform. In this invention, a third branch inclined between the static and moving platforms is used as a constraint branch. This third branch acts as a supporting constraint chain and is movably connected to the second revolute joint on the back of the moving platform. The tilt length support adjustment and rotation angle adjustment are achieved through a second ball joint and a third sliding joint. With the cooperation of the unconstrained branches on both sides, five-DOF parallel machining is realized. The five-DOF parallel robot of this invention has high rigidity and a large workspace, enabling it to be used for machining complex components.

The application discloses a double-flow channel lubricating oil path structure of a fracturing pump crankshaft, which comprises a planetary reducer, a rotary joint, a planetary reducer gear sleeve, a crankshaft oil channel and a crankshaft, the crankshaft is connected with the flange end of a spline flange, the spline end of the spline flange is connected with the output end of a crankshaft oil path communication pipe assembly, the input end of the crankshaft oil path communication pipe assembly passes through the outside side cover of the planetary reducer and is connected with the outside side cover of the planetary reducer through a supporting mechanism, and the input end of the crankshaft oil path communication pipe assembly is connected with the rotary joint. The application solves the problems of poor lubricating effect of the crankshaft of the fracturing pump with the planetary reducer with a large axial dimension and power input from two sides, and damage caused by the problems.

An accessory for a night vision instrument, a system comprising the accessory and the night vision instrument, and a method for mitigating overexposure of the night vision instrument to radiation are disclosed. A housing of the accessory holds a diaphragm, actuatably coupled to a dial, in front of an outermost lens of the night vision instrument. The housing and the dial are coupled to each other via a revolute joint to restrain their movement relative to each other along an aperture axis while allowing rotation of the dial to actuate the diaphragm. A ball detent extends between housing and dial surfaces extending around the aperture axis and axially over each other to cause engagement between. The ball detent is receivable in a groove by rotation of the dial to selectively actuate the diaphragm to a predetermined aperture.

The conveying device for mechanical engineering part machining comprises a conveying belt, a support is fixedly connected to the outer side of the conveying belt, supporting legs are fixedly connected to the bottom of the support, and a cleaning mechanism is fixedly connected to the interior of a water storage tank. The water storage tank is filled with water through the water inlet, the water in the water storage tank flows into the C-shaped pipe through the rotary joint for water, water flow in the C-shaped pipe is dispersed through the water pipe at the bottom, the spray head is opened, and the water sprayed by the spray head cleans the surface of a part. Dirty water obtained after cleaning flows into waste water tanks on the two sides through a transmission belt, the waste water tanks filter the dirty water thoroughly through filter screens on the surfaces, a water source can be recycled, at the moment, the surfaces of the parts are in a clean state, and the conveying device for mechanical engineering part machining has a cleaning function and can clean dust or stains on the surfaces of the mechanical engineering parts. And surface stains do not need to be removed manually, and the using efficiency of the conveying device for mechanical engineering part machining is improved.

This invention relates to the technical field of robotics, providing a humanoid dexterous hand based on a Bricard-spherical variable-cell palm and a hybrid compliant actuated mechanical finger, including a variable-cell palm and at least one mechanical finger; the variable-cell palm includes eight links and eight revolute joints arranged alternately and connected sequentially to form a closed loop, the eight revolute joints including the first, second, third, fourth, fifth, sixth, seventh and eighth revolute joints, the first, second, third, fifth, seventh and eighth revolute joints constitute a Bricard mechanism, the Bricard mechanism, the fourth revolute joint and the sixth revolute joint constitute an eight-bar linkage, the variable-cell palm derives different variable-cell bifurcations through the coaxiality of the revolute joint axes and the coplanarity of three or more axes to form three motion modes; the mechanical finger includes a drive mechanism and a mechanical finger joint, the drive mechanism is provided with an elastic component, the drive mechanism drives the mechanical finger joint to perform pitch, lateral and flexion-extension movements, with high dexterity.

System with storage and retrieval machine and brake fin, the storage and retrieval machine is movable along a travel path, wherein a permanent magnet arrangement is arranged on the storage and retrieval machine, wherein the brake fin is movably arranged via a swivel joint arrangement on a first section of the driving track, the permanent magnet arrangement can effect movement of the brake fin.