403 results about "Radial motion" patented technology

The invention relates to the technical field of positioning machining clamps, in particular to an engine right suspension support positioning machining clamp which is characterized in that a rocker is rotated to drive a first bevel gear to rotate, and a second bevel gear meshed with the first bevel gear rotates along with the first bevel gear and drives a rotary disc to rotate synchronously. The shifting grooves in the surface of the rotary disc push the shifting rods inserted into the shifting grooves to move in the radial direction, the bottoms of the shifting rods are fixedly connected with the sliding blocks, and the sliding blocks slide in the sliding grooves of the fixed disc, so that the three sets of positioning blocks in a circumferential array synchronously move centripetally or centrifugally, and reference positioning of supports of different sizes is achieved; and then the L-shaped shifting piece is loosened and is automatically clamped between teeth of the limiting gear under the action of the first spring to achieve self-locking, displacement is prevented in the machining process, the outer surfaces of the engine right suspension supports of special shapes or different sizes can be positioned through the three sets of positioning blocks arranged in a circumferential array mode, and the application range is wide.

The present application provides a fastener for fastening a first component in a second component having a circular hole. The fastener includes a main body and a retaining member. The main body includes a head for connecting the first component and a shaft portion extending from the head. The retaining member includes a receiving barrel and a plurality of retaining arms. The shaft portion passes through and is connected to the receiving barrel to limit the axial and radial movements of the retaining member along the shaft portion relative to the main body. The plurality of retaining arms extend upwardly from the receiving barrel and are distributed about the central axis of the receiving barrel. The plurality of retaining arms are deflectable towards the shaft portion. The plurality of retaining arms are located between the shaft portion and a hole and abut against the hole to retain the second component between the head and the plurality of retaining arms when the retaining member is inserted into the hole. The main body is made of a first material, and the retaining member is made of a second material that is more wear-resistant than the first material.

Disclosed is a variable-A-value free bending forming device capable of processing pipe fittings of different outer diameters. The device comprises a bending forming module, clamping and fixing modules, and a spherical bearing. The bending forming module is used for clamping a bent section of a pipe blank. Multiple clamping and fixing modules on a rear side of the bending forming module are evenly distributed along the circumference of the pipe blank, and are used for clamping and limiting an unbent section of the pipe blank during a bending forming process. Clamping mechanisms of the bending forming module and the clamping and fixing module have overall radial movement freedom and circumferential movement freedom for clamping jaws, and can meet the requirements for clamping pipe fittings of different outer diameters. Each clamping and fixing module adjusts the A-value during forming by adjusting the positions of an arc-shaped limiting block and a clamping support base. The present invention enables efficient single-die, multi-pipe processing in a free bending forming device for pipe fittings, reducing the time and cost required for die changes. The variable A value expands the application range of the device and further improves the forming quality of three-dimensional bent pipes.

The utility model discloses a clamping tool for a steel wire tensile testing machine, which relates to the technical field of tensile testing equipment and comprises a base station, a rotating disc, a movable clamping plate component, a transmission mechanism and a positioning mechanism. The movable clamping plate assembly is installed on the side wall of the base table and connected with the base table in a sliding mode, the transmission mechanism converts rotating motion of the rotating disc into radial motion of the clamping plate assembly on the base table, the positioning mechanism fixes the movable clamping plate assembly and the transmission mechanism to needed positions, and therefore steel wire rings arranged at the two ends of a steel wire are clamped. The steel wire is uniformly stressed in the stretching process, and the test data is more accurate.

The utility model discloses an independently-driven ring piece expansion and shrinkage integrated forming device. According to the independently-driven ring piece expansion and shrinkage integrated forming device, inner diameter expansion wedge-shaped strips for providing radial driving force are correspondingly installed on the inner diameter face of an expansion mold; a sliding groove is formed in the radial direction of the inner diameter bulging wedge-shaped strip, a bulging sliding block is installed in the sliding groove in a matched mode, and the inner diameter bulging wedge-shaped strip is limited by the bulging sliding block so that the inner diameter bulging wedge-shaped strip can only slide in the radial direction. An outer diameter wedge-shaped loading strip for providing radial driving force is correspondingly mounted on the outer diameter surface of the reducing die, a sliding groove is formed in the radial direction of the outer diameter wedge-shaped loading strip, a reducing sliding block is mounted in the sliding groove in a matched manner, and the outer diameter wedge-shaped loading strip is limited by the reducing sliding block, so that the outer diameter wedge-shaped loading strip can only slide in the radial direction. Due to the outer diameter wedge-shaped loading strip, the inner diameter bulging wedge-shaped strip is limited; the radial movement stability is guaranteed when the outer diameter wedge-shaped loading strip and the inner diameter bulging wedge-shaped strip correspondingly drive the reducing die and the bulging die, and the problems that in the prior art, limiting cannot be achieved in the radial driving process, and the radial movement stability cannot be guaranteed are solved.

The utility model discloses an automatic pipe head seal welding device which is used for conducting seal welding on the two ends of a composite pipe, and the composite pipe comprises a base pipe and a composite layer pipe. The automatic pipe head sealing and welding equipment comprises a base station, operation frames located on the base station and an expansion mechanism connected to the operation frames, and the operation frames are located at the two longitudinal ends of the composite pipe. The expansion mechanism comprises a frame connected to the operation frame, a hydraulic cylinder located in the frame, a conical expansion head driven by the hydraulic cylinder, a positioning disc fixed to the front end of the frame and an inner supporting module located on the inner circumference of the positioning disc. The inner supporting module is provided with a main body part and an expansion part forwards protruding out of the positioning disc from the main body part. When the composite pipe is expanded, the positioning disc abuts against the end face of the base pipe, the expansion part protrudes into the inner circumference of the composite pipe, and the hydraulic cylinder drives the conical expansion head to move forwards to abut against the inner wall face of the main body part, so that the expansion part moves in the radial direction to enable the composite pipe to be tightly attached to the base pipe in an expanded mode. Therefore, the gap between the base pipe and the multi-layer pipe is eliminated, and a good welding state is provided for automatic welding.

The invention discloses a precision detection and compensation method for an automatic tool setting device, which belongs to the technical field of numerical control machining and comprises the following steps of: calibrating position coordinates of a zero point of a laser tracker in a machine tool coordinate system; moving the machine tool to enable the spindle axis and the zero point of the machine tool tracker to be on the same horizontal plane; obtaining coordinates of a reflector rotation circle center position point d on the automatic tool setting device; setting the zero point of the tracker as f, and rotating a machine tool spindle to enable the axis of the radial motion shaft of the automatic tool setting device to be parallel to the straight line fd; a laser tracker is used for obtaining the distribution rule of mechanical transmission errors on the whole stroke of a radial sliding plate of the automatic tool setting device; and carrying out full-stroke positioning precision and repeated positioning precision compensation on the radial sliding plate of the automatic tool setting device until the movement precision of the radial sliding plate meets the expected precision requirement. According to the method, the measuring laser line of the tracker can be ensured to be coaxial with the measured motion axis to the greatest extent, the influence of the motion error of the rotating shaft of the tracker on the measurement precision is reduced, and high-precision position error measurement and compensation are realized.

The invention provides a mechanical torque increasing device, and relates to the technical field of mechanical transmission, in order to solve the problem that in the prior art, the torque increasing efficiency of devices is low, the mechanical torque increasing device comprises an outer acting component, an inner acting component, a plurality of radial actuating arms and a power driving mechanism, and the power driving mechanism drives the inner acting component and the outer acting component to rotate relatively. The inner circumferential working face of the outer acting component is used for forcing a plurality of radial actuating arms on the inner acting component to generate radial motion, and then the radial motion is collected and converted into enhanced torque of the output shaft. Energy conversion is achieved through a deterministic mechanical structure, and the beneficial effects of efficient torque increasing, flexible structure, stable operation and the like are achieved.

The present invention consists of a lifting tool (1) for internally flanged bodies comprising: a body (8) consisting of a solid supporting structure; means (19) to ensure the rotation of a lever (10); means (10) for moving rods (9): these means consist of a lever (10) placed in rotation on the pin (19) by at least one hydraulic cylinder (14), which is connected to said lever (10) by means of a hinge (13) and to said body (8) by means of a hinge (11); means (14) for moving the lever (10); means (9) for pushing petals (5) radially outwards: these means consist of a rod (9) for each petal (5): said rods (9) are connected to the lever (10) by means of hinges (12) and to the petals (5) by means of hinges (20); means (5) to ensure the centering of the body (8) with respect to the pipe (2); to also ensure the lifting of said pipe (2) by engaging the flange (3), welded to the pipe (2): such means consist of at least three petals (5), constrained in movement by at least one sliding block (16) for each petal (5): each such sliding block (16) being slidable in a guiding slot (15) machined into the body of the petal (5); means (16) to ensure the radial movement of the petal (5) with respect to the geometric axis of the body (8); these means consist of at least one sliding block (16) for each petal (5): each such sliding block (16) being slidable relative to the petal (5) in a guiding slot (15) machined into the body of the petal (5) itself; means (6) to ensure that during the lifting of the petals (5) the petals (5) do not leave their seat; these means consist of supports (6) able to counteract the upward force that is generated on the back of the petal (5) during the lifting operation.

The invention discloses a wire feeding mechanism for a steel ball cold header, and belongs to the technical field of metal plastic processing equipment.The mechanism comprises a workbench, a straightening mechanism, a first driving assembly and a feeding roller assembly, and the straightening mechanism is used for straightening a steel ball through cooperation of a rotatable diameter adjusting disc, pressing assemblies distributed in the circumferential direction and a connecting mechanism; and the feeding roller assembly is provided with a rotatable rotary table mechanism, a plurality of guide rolling wheels with different sizes are installed on the rotary table mechanism, switching is driven through a second driving assembly, locking is achieved through a limiting assembly, and the feeding roller assembly is driven by a first driving assembly to rotate. According to the straightening device, the straightening function of synchronous aligning and the driving function of rapid roller changing are integrated, and the adaptability and the production efficiency of the straightening device to wires with different diameters are improved.

The invention relates to the field of pipeline welding, and provides a gas pipeline construction welding butt joint device which comprises a multi-degree-of-freedom supporting module, a base shell, a rotating module, a clamping shell, an adjusting module, a multi-degree-of-freedom welding module and an integrated driving module, an opening is formed in one side of the base shell, and the rotating module comprises a driving part, an arc-shaped pipe shell and a positioning hole. The integrated driving module is used for controlling the clamping shell to do radial movement, the surface of the pin rod is sleeved with a second spring, the second spring is used for controlling the pin rod to be separated from the cleaning part, the adjusting module can move along the axis of the arc-shaped pipe shell and comprises a limiting pin and a second pressure applying piece, and the limiting pin is located in the positioning hole and can enter the limiting hole. The second pressure applying piece controls the pin rod to make sliding contact with the cleaning part, then the cleaning part is controlled to stretch out of the hidden opening, the integrated operation function of clamping alignment, rotary translation cleaning and rotary welding is achieved, and the beneficial effects of being ingenious in structural matching, small in size, high in integration degree and high in precision are achieved.

A spring assembly for the clutch of an automatic transmission includes a plurality of springs residing between upper and lower retaining rings which are secured together with a plurality of fasteners. The spring assembly is compressed against the force of the springs when the clutch piston is applied to engage the clutch, and then expanded when the clutch piston is released to disengage the clutch. The fasteners of the spring assembly eliminate radial movement of the rings relative to one another and control the axial movement of either of the upper and lower spring retaining rings.

The invention discloses a novel wedge block type inflatable shaft for a transfer arm, and belongs to the field of material carrying equipment. According to the device, the double-air-path air cylinder serves as a core actuator, the piston rod can be accurately driven to complete left-right bidirectional linear motion, the wedge type expansion block is controlled in a bidirectional active mode, the key bar can be actively pushed out and can also be actively withdrawn, the problems of incomplete reset, response delay and clamping stagnation caused by spring fatigue are fundamentally solved, and the service life of the key bar is prolonged. The mechanism adopts the matching design of a plurality of groups of wedge-type sliding blocks and expansion blocks, the axial movement of the piston rod is efficiently and synchronously converted into the radial movement of the expansion blocks through the guide engagement of precisely machined T-shaped grooves and T-shaped bosses, and when the sliding blocks are pushed leftwards, the huge radial thrust is generated by utilizing the extrusion of a lower wedge surface, so that the axial movement of the piston rod is effectively and synchronously converted into the radial movement of the expansion blocks. The rubber key strip is forcefully expanded to form high-rigidity and self-locking heavy-load clamping; when pulled rightwards, the upper wedge faces make contact to force the expansion blocks to retract in the radial direction, the key bars are driven to retract rapidly, and rapid and thorough release is achieved.

The invention discloses a wafer clamping device and a clamping method. The wafer clamping device comprises a mounting base, a clamping module and a lifting module, a base hole is formed in the top center of the mounting base; the clamping module comprises a rotating mechanism rotationally connected with the side wall of the base hole and a plurality of clamping mechanisms distributed on the rotating mechanism at equal intervals around the circle center of the base hole, each clamping mechanism comprises a bottom plate, a lifting part, a radial moving part and a clamping block, the radial moving parts are slidably connected to the bottom plates in the radial direction, and the lifting parts are vertically slidably connected to the bottom plates; the clamping block is slidably connected to the radial moving part in the radial direction, the lifting part is provided with an inclined abutting part, and the inclined face of the inclined abutting part abuts against the rear end of the radial moving part. The lifting module comprises a lifting ring located on the outer side of the rotating mechanism and a plurality of lifting air cylinders distributed on the outer side of the lifting ring at equal intervals, and a lifting clamping piece is arranged at the output end of the lifting module and can clamp the lifting ring. According to the wafer clamping device, the vertical movement of the lifting air cylinder is converted into the radial movement of the clamping blocks, and the movement stroke and the clamping force of the clamping blocks are accurately controlled in combination with limiting and buffering structures.

The novel double-drive double-brake five-shaft swing head comprises a shaft C and a shaft A which are axially arranged in series, the shaft C can drive the shaft A to move by 360 degrees in the radial direction, and the novel double-drive double-brake five-shaft swing head is characterized in that the shaft A is connected with a swing main shaft through two sets of rotating assemblies which are symmetrically distributed; each rotating assembly comprises a rotating shaft connected with the shaft A, and the periphery of the middle of the rotating shaft is sequentially sleeved with a rotor and a coil; a brake chamber is arranged on the periphery of the outer end part of the rotating shaft, and a part of the brake chamber is embedded into the axial clearance space of the rotor; a brake executing mechanism is arranged in the brake chamber and used for conducting brake control on the rotating shaft, the brake chamber is embedded into the axial gap of the rotor, space is saved by 40%, and the structure is more compact.

The utility model discloses a feeding device for PE pipe production, and belongs to the technical field of PE pipe production. A feeding device for PE pipe production comprises a discharging hopper, a motor is fixedly installed on the discharging hopper, the output end of the motor penetrates through the discharging hopper and is connected with a rotating shaft through a coupler, scraping plates are installed on the rotating shaft at equal intervals, the feeding device further comprises a breaking part, and the breaking part and the rotating shaft are coaxially arranged. A wave groove is formed in the end, located in the shaft sleeve, of the rotating shaft, a positioning pin matched with the wave groove is fixedly installed on the breaking part, and when the rotating shaft rotates, the positioning pin moves along the wave groove, so that the breaking part generates radial movement relative to the rotating shaft and is used for breaking caked materials; the ball breaking head can accurately execute radial movement, effective pressure is applied to caked materials, and the ball breaking efficiency is remarkably improved.

The invention relates to a production process suitable for a secondary transfer printing roller, the secondary transfer printing roller comprises a center shaft, an inner rubber pipe and an outer rubber pipe, and the production process comprises the following steps: S1, preparing materials; and S2, assembling. On one hand, on the basis of the polygonal blank, the multiple edges of the blank are clamped to move in the radial direction so as to expand or contract the center hole, accurate insertion of the center shaft is facilitated, contact between the center shaft and the inner wall of the inner rubber pipe during assembly can be reduced, and the inner rubber pipe can evenly wrap and adhere to the center shaft; meanwhile, after assembly is completed, redundant parts are removed by grinding the outer wall of the blank, and therefore damage to the inner rubber pipe is effectively avoided; and on the other hand, the negative pressure formed by the annular vacuum cavity drives the outer rubber pipe to keep uniform stress expansion in the circumferential direction, it is ensured that the outer rubber pipe is evenly attached to the surface of the inner rubber pipe, and therefore the assembling quality is ensured, and the product yield is effectively improved.

The invention discloses refrigerant filling equipment for a horizontal rotational flow evaporator, which belongs to the technical field of refrigerant filling and comprises an injection mechanism for injecting an external refrigerant into the evaporator. The injection mechanism is provided with a pumping mechanism used for pumping out original redundant refrigerants in the evaporator and a connecting mechanism used for connecting the injection mechanism with the refrigerant injection opening. The pumping and injecting functions of the refrigerant are integrated in single gun body equipment, and the whole process can be controlled by switching the gear of the knob, so that the operation steps are greatly simplified, and the repair and maintenance efficiency is remarkably improved; a mechanical connecting mechanism based on gear transmission and a worm and gear self-locking effect is adopted, after the four fixing pieces are inserted into an injection opening, the four fixing pieces are indirectly driven to execute synchronous and symmetrical radial movement through rotation of the rotary knob, and therefore the four fixing pieces are firmly clamped on the outer wall of an evaporator refrigerant injection pipe; and stable and reliable connection between the filling equipment and the evaporator is ensured.

Arrangement for driving an adjusting shaft (2) for adjusting the expansion stroke and / or the compression ratio of an internal combustion engine (1), wherein the arrangement has a drive motor (11) which is or can be connected to the adjusting shaft (2) via a gear mechanism, characterized in that the gear mechanism is designed as a tension wave gear mechanism (13) with a wave generator (14), an externally toothed flexspline (16) and an internally toothed ring gear meshing with the flexspline (16), and is arranged in a gear housing (22) which is or can be fastened to the crankcase (25) of the internal combustion engine (1) in such a way that the flexspline (16) always remains in the same rotational position relative to the gear housing (22), wherein the tension wave gear mechanism (13) is designed to transmit a torque to the adjusting shaft (2), the coupling end of which executes an axial and / or radial movement in an externally driven manner,an output element (35) comprising the ring gear, which is torsionally rigid and at the same time flexible and at least partially, in particular completely, decouples the flexspline (16) from the externally driven axial and / or radial movement.

The invention relates to a rotary tool (10), the tool body (12) of which extends between a driven end (16) and a front end (18) along a central axis of rotation (14), the rotary tool comprising: a receiving region for receiving a deburring element (30) which is movable relative to the axis of rotation along a radial axis of movement between an inner position and an outer position; and a fluid channel (20) which is fluidically connected to the receiving region in order to apply fluid pressure to the deburring element, wherein the rotary tool has a mechanical spring which generates a preloading force and pushes the deburring element radially outwards into the outer position and preloads the deburring element in the outer position, and wherein, depending on a fluid pressure prevailing in the fluid channel, an additional force acting radially outwards can be applied or is applied to the deburring element.

The application discloses a modularized screw conveyor for adjustable feed processing, and belongs to the technical field of agricultural and sideline product processing and conveying mechanical equipment, comprising a plurality of cylinder bodies, the plurality of cylinder bodies are expandable connected through supporting rings, and the cylinder bodies located at the sides are each provided with an end cover, one side of the end cover is connected with a rotary driving part, and at least two cylinder bodies are connected with pipelines. In the application, through the built-in limiting mechanism, a single limiting rod is pushed by the central telescopic driving part, the axial thrust is converted into radial movement through wedge surface cooperation, a plurality of clamping blocks are driven to be synchronously clamped into the clamping grooves of the screw conveying part, the quick assembly and disassembly and firm locking of the screw conveying part are realized, the first spring is matched to absorb the rotary torsion, and the wedge of the fixed block and the groove of the expanded shaft end is matched, so that the accuracy of torque transmission under long-distance expansion and the high stability of overall operation are ensured, and the strength requirement of continuous conveying of large quantities of agricultural and sideline products is met.

The utility model discloses a tension adjusting mechanism of a feeding traction unit, which comprises a wall plate and at least two tension rollers movably arranged on the wall plate, each tension roller is provided with a tension adjusting component for driving the tension roller to move, and the tension adjusting components drive the tension rollers to move along the radial direction of the tension rollers. The mechanism has the following advantages and effects that the adjusting range is larger, and the mechanism can better adapt to emergencies, so that the reliability of the mechanism is improved.

The present invention belongs to the field of assembly apparatuses. Disclosed are a brushless direct-current motor and a processing system therefor. The processing system comprises a workbench, wherein an assembly area is provided on the upper end of the workbench; a clamping mechanism and an assembly mechanism are provided in the assembly area, and the clamping mechanism and the assembly mechanism are spaced apart in the axial direction of a workpiece; the assembly mechanism comprises a support, the support moving in the axial direction of the workpiece, and the support being provided with a rotating portion, a driving rod and an assembly driving mechanism; the rotating portion is arranged in the axial direction of the workpiece, and the rotating portion is driven by a workpiece rotating electric motor to rotate around the axis thereof, and is provided with a connection mechanism that is configured to be connected to the workpiece; the driving rod moves in the radial direction of the workpiece, and the driving rod extends toward the clamping mechanism; and the assembly driving mechanism drives a pushing portion to move in the axial direction of the workpiece. The present invention aims to provide the brushless direct-current motor and the processing system therefor, which can reduce the labor intensity for workers.

The invention relates to a rotary tool (10) which extends with a tool body (12) along a central axis of rotation (14) between a driven end (16) and a front end (18), with a receiving area for receiving a deburring element (30) which is movable relative to the axis of rotation along a radial axis of movement between an inner position and an outer position, with a fluid channel (20) which is fluidly connected to the receiving area for applying fluid pressure to the deburring element, wherein the rotary tool has a mechanical spring which generates a preload force and pushes the deburring element radially outwards into the outer position and preloads the deburring element in the outer position, wherein, depending on a fluid pressure applied in the fluid channel, the deburring element can be or is subjected to an additional force acting radially outwards.

The invention relates to a locking device (100) for actuating a vehicle lock, comprising a cylinder barrel (10), in which a lock cylinder (20) is rotatably accommodated, between which a plurality of locking plates (30) are arranged which are arranged one behind the other in the axial direction and which can be moved radially, in a release position (I), the lock cylinder can be arranged in the lock cylinder through a matching key so that the lock cylinder can be separated from the cylinder barrel in a rotatable mode, and in a locking position (II), the lock cylinder can be locked together with the cylinder barrel after the matching key is pulled out of the lock cylinder so that the lock cylinder can be combined to the cylinder barrel in an anti-rotation mode. At least one radially movable locking element (40) is arranged between the cylinder barrel and the lock cylinder, and the locking element can be moved into a safety groove (31) on the at least one locking plate (30) by rotating the lock cylinder. According to the invention, a safety groove (31) of the at least one locking plate is designed in such a way that a first gap (S1) occurs between the locking element (40) and the safety groove when the locking element (40) is moved into the safety groove.

The utility model relates to the technical field of hydraulic systems, in particular to a valve element reversing structure. A valve element reversing structure comprises a positioning rod, a valve element, a valve element, a valve element, a valve element, a valve element, a valve element, a valve element and a valve element, and the positioning rod is in follow-up fit with the valve element; and the positioning ball is arranged on the periphery of the positioning rod, the positioning ball moves in the radial direction under the action of an elastic piece so as to keep making contact with the outer surface of the positioning rod, and the positioning ball is matched with the positioning structure so as to position the valve element. According to one embodiment of the utility model, the positioning structure comprises a positioning inclined surface, and the positioning inclined surface can block the positioning ball to realize limiting. According to one embodiment of the utility model, the positioning structure comprises a positioning groove, and the positioning ball can be embedded into the positioning groove. The technical problem that in the prior art, in order to achieve limiting of different strokes, a reversing valve is limited in the mode that a screw strikes an end cover, and the structure is prone to being damaged is solved.

A multi-point linkage self-centering correction and locking mechanism for satellite rescue includes: a power motor outputting torque to rotate a drive gear; a ring-shaped frame with multiple mounting points around its circumference, each mounting point housing an application module via a mounting bracket; each application module having a corresponding double rocker arm mechanism; a straight end of a short adjusting rod hinged to the double rocker arm mechanism, and a bent end of the short adjusting rod hinged to the drive gear, the short adjusting rod moving when the drive gear rotates; a long adjusting rod hinged between the double rocker arm mechanisms of two adjacent application modules; each application module, driven by its corresponding double rocker arm mechanism, can move synchronously radially to achieve locking and fixation. This invention, through a linkage mechanism group, achieves synchronous driving of the peripherally arranged application modules and ensures that no lateral force is generated during the synchronous driving process.

The invention discloses an automatic welding device and process for a medium cooling radial flux motor stator, and relates to the technical field of laser welding. The automatic welding device comprises a fixing base, a driving rotary disc and a clamping assembly; the driving rotary disc is provided with a threaded groove and rotationally connected with the fixing base. The clamping assembly comprises a plurality of clamping mechanisms, the multiple clamping mechanisms are arranged around the peripheral side of the driving rotary disc, each clamping mechanism comprises a clamping block and a power screw which are connected, the clamping blocks are slidably connected with the fixing base, and the power screws are connected with the threaded grooves in a matched and clamped mode in the radial direction of the driving rotary disc. And the driving turntable can simultaneously drive the plurality of power screws to radially move through the thread grooves, so that the plurality of clamping blocks are close to or far away from each other to clamp a stator or unlock the stator. The multiple clamping blocks can clamp the stator at the same time when the driving rotary disc rotates, the consistency of clamping and fixing of the stator can be kept, only the driving rotary disc needs to be controlled to rotate, and operation is convenient.

A holder with a variable receiving opening for beverage containers with different outer diameters for a vehicle is described, wherein the holder (1) has one or more holding devices (4, 4a, 4b) which have several, in particular lamellar, predominantly non-flexible holding elements (14) or crescent-shaped predominantly non-flexible holding elements (24) or circular segment-shaped predominantly non-flexible holding elements (34), and a radial movement of the several holding elements (14, 24, 34) with respect to the central axis (X) of the receiving opening (3) is effected by a mechanical or electromechanical action, in particular by actuator devices (7, 7a, 7b, 17a, 17b), on the several holding devices (4, 4a, 4b) and / or on one or more bearing devices (8, 8a, 8b), and if necessary,Simultaneously, a sliding movement and / or a pivoting movement and / or a rotational movement of the several holding elements (14, 24, 34) around a central axis (X) of the receiving opening (3) is effected to enlarge or reduce the receiving opening (3).