202 results about "Radial motion" patented technology

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 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 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 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 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.

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).

The invention discloses a quick-change connector of a cutter handle and a connecting method of the quick-change connector, belongs to the technical field of cutter connection and is used for realizing quick connection and separation between the cutter handle and a power handle. The quick-change connector comprises a connecting sleeve arranged on a cutter handle, the connecting sleeve is provided with at least one radial steel ball hole, a steel ball contained in the steel ball hole and an outer lock sleeve capable of being axially and movably arranged outside the connecting sleeve in a sleeving mode, and the inner wall of the outer lock sleeve can selectively cover or avoid the steel ball hole so as to limit or release radial movement of the steel ball. The elastic element is arranged between the connecting sleeve and the outer lock sleeve and provides circumferential rotating force for the outer lock sleeve to enable the inner wall of the outer lock sleeve to cover the steel ball hole, and the inner pushing sleeve is arranged in the connecting sleeve in an axial moving mode and can be pushed by an inserted power handle. The jacking structure is used for jacking the steel balls in the radial direction when the inner wall of the outer lock sleeve keeps away from the steel ball holes. The device is simple in structure, convenient to operate and capable of achieving rapid connection and separation of the cutter and the power handle.

The invention belongs to the technical field of servo press fitting, and discloses a servo radial press which comprises a rack and a lifting device mounted on the rack. The lifting device comprises a driving part, and an assembling plate and a mounting plate which are arranged on the rack in a sliding manner; the driving part drives the assembling plate and the mounting plate to do lifting motion in the vertical direction of the rack; the linear reciprocating driving mechanism is arranged on the assembling plate; and a radial press fitting execution assembly. Through the axial lifting motion of the fixed rail part, the sliding press fitting part is driven by the motion conversion mechanism to move in the radial direction of the guide part, the linear reciprocating driving mechanism can synchronously drive the at least two pressing heads to do high-precision face-to-face or back-to-back motion, and the structure of a traditional multi-shaft independent driving or complex cam system is simplified; through linkage of the respective corresponding motion conversion mechanisms, the sliding press-fitting parts synchronously move in the radial direction, and it is ensured that all the pressure heads can make contact with workpieces at the same time and apply uniform force during multi-point press-fitting.

A power tool comprises a housing, a motor assembly and an impact assembly configured to be driven by the motor assembly. The impact assembly comprises a hammer defining a hammer chamber therein and an anvil at least partially disposed in the hammer chamber and configured to rotationally drive an output shaft. The anvil comprises a body portion, an anvil chamber defined therein, and a reciprocating member configured to selectively move radially outwardly relative to the body portion to be selectively impacted by an impact member of the hammer so that the hammer selectively imparts rotational movement to the anvil. The anvil includes an active valve configured to control discharge of fluid from an anvil chamber to the hammer chamber. The active value variably opens based on variance of one or more physical characteristics of the fluid (e.g., at least one of volume, temperature, pressure, or viscosity of the fluid).

The invention relates to the field of treatment instruments, and discloses a pressure-adjustable breast cancer postoperative lymphedema wearable treatment device which comprises a tail end positioning mechanism located on a shoulder circumference sleeve frame, a second damping hydraulic part and an extending hinge frame are matched and used for fixing the forearm area of a patient, and the straight state of the arm is guaranteed; the pressing and limiting mechanism is located on the shoulder circumference sleeve frame and is matched with the big arm opposed frame, the double-helix screw and the limiting sleeve to form a multi-direction pressing structure for the big arm edema part of the patient; the pressing driving mechanism is located on the shoulder circumference sleeve frame and matched with a fixed shaft structure of the limiting sleeve, the oppositely-arranged parallel channels, the embedded ring frame and the inward-extending sliding frame. Through the independent air bag structure of the forearm ring sleeve and the attached arc plate, automatic inflation and deflation are achieved according to the perimeter of the limb, postoperative limb swelling changes are adapted, basic mechanical pressure is provided through radial movement of the inward-extending sliding frame, pressure distribution is finely adjusted through air bag filling, and compression blind areas are eliminated.

The utility model provides an inside and outside dual-purpose robot clamping jaw, which relates to the field of industrial robot clamping devices, and comprises a cylinder, a connecting plate and a clamping jaw, the cylinder is connected with the clamping jaw through the connecting plate and controls the stretching and retracting of the clamping jaw, the cylinder is a standard multi-finger cylinder, each finger is connected with the clamping jaw through the connecting plate, and the clamping jaw is connected with the cylinder through the connecting plate. The multiple fingers are symmetrically distributed in the circumferential direction, and the stretching and retracting directions of the multiple fingers are all in the radial direction. By replacing the clamping jaw with the inner supporting protruding block or the outer clamping protruding block (or using the clamping jaw integrating the two protruding blocks at the same time), the inner supporting type grabbing mode and the outer clamping type grabbing mode can be rapidly switched without replacing the whole clamp, and the mode switching operation steps are remarkably reduced. And the radial movement stroke of the clamping jaw is directly adjusted by replacing the connecting plates with different lengths, so that the clamp is adaptive to barrel-shaped objects with different diameters, and the application range of the clamp is expanded. The design of the standard three-finger air cylinder and the detachable clamping jaw is adopted, damaged parts can be replaced independently, and the maintenance cost is reduced.

This invention provides a balloon catheter comprising a catheter, a balloon, and a limiting element. The balloon is positioned distal to or near the distal end of the catheter. The limiting element is located on the outer side of the balloon, and at least a portion of the limiting element is capable of radial movement or radial deformation to drive the balloon to move radially inward. The balloon catheter provided by this invention allows physicians to adjust the limiting element to contact the balloon and deform it, ensuring that a portion of the balloon remains firmly attached to the blood vessel. This reduces the risk of balloon displacement, prevents the balloon from losing its function of dilating blood vessels or blocking aneurysms due to displacement, and improves the stability and reliability of balloon implantation. Simultaneously, it allows another portion of the balloon to no longer be tightly attached to the blood vessel wall, creating a gap to form a fluid channel, allowing a small amount of blood to flow between the two ends of the balloon, ensuring blood supply to distal organs, reducing surgical complications, reducing pressure on patients and physicians, and increasing the success rate of surgery.

In a digital to garment printer having a rotary printing motion one or more T-shirt carriers are arranged on a fixed radius and rotate around a central column which houses one or more rotary tables. Each carrier is independent of the others but shares the same radius of rotation about the central column. All T-shirt carriers may share the same plane of rotation or be offset vertically and move to the printing plane with the up-down motion of the central column. On the same radius there are a series of fixed stations for printing as well as pretreatment, drying, and post treatment. The printing motion is achieved through the rotation of the T-shirt carrier that swipes under the print heads. The stepping motion can be achieved through the radial motion of the T-shirt carrier or the movement of the print head carrier.

The present application discloses a sock pickup device for hosiery machine with axial pushing and radial stretching, which comprises pickup needles for picking up sock loops in cooperation with knitting needles of the hosiery machine; the pickup needles are arranged in a ring shape in the needle slots of the needle disc to form a pickup needle ring; the pickup needle ring is subjected to an inclined first driving force in the axial direction through the bearing surface of the pickup needles, and the pickup needles of the pickup needle ring are driven to move along the needle slots from the needle disc axis to away from the needle disc axis; the pickup needle ring is subjected to a second driving force in the radial direction, and the second driving force drives the pickup needles of the pickup needle ring to move along the needle slots from away from the needle disc axis to close to the needle disc axis; and the first driving force is generated by the pressing ring. The present application drives the pickup needles with bearing surfaces to move radially by the inclined first driving force generated by the pressing ring, and realizes the radial reciprocating movement of the pickup needle ring in cooperation with the second driving force, so that all the pickup needles of the pickup needle ring are subjected to synchronous force to avoid pickup missing.

The invention belongs to the technical field of gasification furnace waste boiler and water-cooled wall outer wall coating surfacing and laser cladding, and particularly relates to gasification furnace waste boiler and water-cooled wall outer wall coating surfacing and laser cladding equipment which comprises two flexible rails, a laser cladding device and a laser cladding device, and the two flexible rails both surround a tank body in the circumferential direction and are attached to the outer side wall of the tank body; the two circumferential movement modules are in sliding fit with the two flexible rails correspondingly; the lifting motion module is arranged on the circumferential motion module; the tangential movement module is arranged at the action end of the lifting movement module; the radial motion module is arranged at the action end of the tangential motion module; the rotating module is arranged at the action end of the radial movement module; and the working head is arranged on the rotating module. In the working process, rotation of the tank body is not needed, the energy consumption and equipment requirements are low, the size is small, disassembly and assembly are convenient, the device is suitable for multi-size tank bodies, the automation level is high, positioning is accurate, the quality of welding seams or cladding layers is effectively improved, and the working efficiency is remarkably improved.

The application discloses a connecting device and a refrigeration equipment assembly. The connecting device comprises a connecting body, a connecting piece, a releasing piece and a pushing piece. The connecting piece is rotationally connected to the connecting body through a rotating shaft and comprises an abutting end and a releasing end. The releasing end is arranged at the other end of the rotating shaft away from the abutting end. The releasing piece is arranged on the connecting body and comprises a pushing block, a pushing rod and an engaging block connected in sequence. The pushing block is in abutment with the releasing end. The pushing piece is arranged on the connecting body and has a wedge surface for abutting with the engaging block. The pushing piece is used to drive the engaging block to move through the wedge surface, so that the releasing end is driven to move away from the connecting body through the pushing rod and the pushing block, and the abutting end is driven to move towards the connecting body. The application utilizes the structure cooperation of the wedge surface of the pushing piece and the multi-stage transmission of the releasing piece, realizes the accurate conversion from axial displacement to radial movement, and guarantees the smoothness of transmission and the synchronism of releasing action.

The invention discloses a centrifugal pump rotor curved surface profile tolerance detection device and method, and relates to the technical field of centrifugal pump rotor curved surface profile tolerance detection.The centrifugal pump rotor curved surface profile tolerance detection device comprises a detection device body, the detection device body comprises a workbench, a plurality of through holes are formed in the top wall of the workbench, and clamping mechanisms are installed in the through holes; the clamping mechanism comprises a rotating disc rotationally arranged in the through hole, a first mounting groove concaved inwards is formed in the top wall of the rotating disc, a driving part is detachably mounted at the first mounting groove, a centering assembly is jointly slidably mounted at the axis of the first mounting groove and the axis of the driving part, and the centering assembly comprises a cylinder. The driving piece synchronously drives the multiple clamping blocks to move in the radial direction, the rotating shaft of the centrifugal pump rotor can be automatically made to coincide with the preset reference axis of the detection device, mechanical automatic centering clamping is conducted in the process of installing the rotating shaft of the centrifugal pump rotor, centering is faster, more consistent and higher in precision compared with traditional manual centering, and errors caused by human intervention are reduced.

An electric motor includes a stator presenting a first surface. A rotor is rotatable relative to the stator. The rotor presents a rotor raceway disposed in spaced relation to the first surface of the stator. The first surface of the stator defines a plurality of slots in spaced relation to one another to define a plurality of spaced teeth between the plurality of slots. At least one electrical conductor is disposed in each of the plurality of slots and is configured to selectively generate a moving magnetic field to act on the rotor to provide rotational motion of the rotor. A portion of the at least one electrical conductor extends substantially in radial alignment with the first surface of the stator or extends beyond the first surface of the stator to at least partially define a stator raceway of the stator for engaging the rotor raceway of the rotor during relative radial motion between the rotor and the stator.

A tool for positioning and clamping a workpiece is provided. The tool includes a power input mechanism from which power is input, a lever mechanism connected to the power input mechanism and pivotable about a pivot axis to transmit power from the power input mechanism, an axial motion mechanism that is axially moved by the lever mechanism, a radial clamping mechanism that cooperates with the axial motion mechanism to convert axial motion of the axial motion mechanism into radial motion for positioning and clamping the workpiece, and a base frame that supports the power input mechanism, the lever mechanism, the axial motion mechanism, and the radial clamping mechanism. The axial motion mechanism includes an inclined surface, the radial clamping mechanism includes a spherical surface that abuts and point contacts the inclined surface, and the spherical surface is constrained from axial motion. When the inclined surface is axially moved with the axial motion mechanism, the inclined surface pushes against and moves the spherical surface along the inclined surface relative to the inclined surface to cause the radial clamping mechanism to move radially.

This invention discloses a device and method for detecting the surface profile of a centrifugal pump rotor, relating to the field of centrifugal pump rotor surface profile detection technology. The device includes a main body comprising a worktable with multiple through holes on its top wall. Each through hole houses a clamping mechanism, which includes a rotating disk rotatably disposed within the through hole. The rotating disk has a recessed first mounting groove on its top wall, and a driving component is detachably mounted in the first mounting groove. An alignment component, comprising a cylinder, is slidably mounted at the axis of the first mounting groove and the driving component. By synchronously driving the multiple clamping blocks radially, the drive component automatically aligns the centrifugal pump rotor's shaft with the preset reference axis of the detection device. This mechanical automatic alignment and clamping during the installation of the centrifugal pump rotor's shaft is faster, more consistent, and more accurate than traditional manual alignment, reducing errors caused by human intervention.

Bearing damper systems for gas turbine engines include a bearing structure and, a housing arranged outward from the bearing structure and defining a plurality of axially extending recesses arranged circumferentially about the axis. A set of energy dissipating elements are arranged within the recesses and are axially constrained therein. The energy dissipating elements are arranged to receive a radial outward force from the bearing structure. Each energy dissipating element may be radially compressed while being axially constrained in response to a radial movement of the bearing structure and enter a loaded state with energy associated with the compression is absorbed into the material of the energy dissipating element. Each energy dissipating element is configured to convert at least a portion of the absorbed energy to heat and is configured to return to an unloaded state after removal of the load from the bearing structure.

The present invention discloses a trailer hitch belonging to the field of automotive engineering, which solves the problem that the structure of existing trailer hitches is too complex. The trailer hitch of the present invention comprises a mounting frame, a towing hook, a drive component, a first actuating element, and a second actuating element. The mounting frame is provided with a sleeve, and the towing hook is mounted on the outside of the sleeve. The first actuating element is arranged in the sleeve and is driven to rotate by the drive component. A rotation-locking element is provided between the first actuating element and the towing hook. The rotational movement of the first actuating element causes the rotation-locking element to generate a radial movement on the sleeve to lock or unlock the towing hook.In this arrangement, one of the second actuating elements and the tow hook is provided with a gear projection, and the other is provided with a helical guide section and a gear section. The unlocking process of the tow hook is accompanied by the axial displacement and rotation of the second actuating element, and the gear projection moves along the helical guide section toward the gear section. After the tow hook is unlocked, the gear section acts on the gear projection to cause the tow hook to rotate.

The invention relates to the technical field of centrifugal pumps, in particular to a corrosion-resistant and wear-resistant centrifugal pump which comprises a pump shell, a water inlet and a water outlet formed in the two sides of the pump shell, and further comprises an impeller rotationally installed in the pump shell; one end of the pump shaft movably penetrates through the pump shell, the tail end is fixedly connected with the impeller, and the other end is connected with the motor; the rectifying cylinder is designed to be annular and is rotationally mounted in the water inlet; the rectification grooves are formed in the rectification cylinder in an annular array mode, and the multiple rectification grooves are connected with the impeller in a penetrating mode; the swing plates are rotationally mounted in the rectifying tank in a transverse linear array manner; and the swing assembly is arranged in the rectifying tank and used for driving the swing plate to swing back and forth. According to the centrifugal pump, liquid can be driven to generate slight radial motion through reciprocating swing of the swing plate, liquid in a high-speed area and liquid in a low-speed area are mixed, water flow velocity distribution is more uniform, and shear layers and vortexes are reduced.

The present application relates to a kind of crimping pliers capable of servo positioning contact, belong to cable crimping technical field, crimping pliers include crimping pliers main body and positioner, crimping pliers main body includes upper jaw and lower jaw, positioner is fixedly connected with lower jaw;Positioner includes: positioner base, contact piece radial motion compensation piece is arranged in it, contact piece radial motion compensation piece is slidably arranged on positioner base along radial direction;Contact piece axial motion compensation piece is slidably connected on contact piece radial motion compensation piece;Contact piece axial motion compensation piece is equipped with contact piece positioning hole, contact piece positioning hole is equipped with contact piece positioning surface;Axial motion elastic element is arranged in the sliding direction of contact piece axial motion compensation piece;Contact piece radial motion compensation piece and positioner base are also equipped with radial motion elastic element.The present application can realize the contact of product crimping process in follow-up positioning, guarantee the structure of after crimping neat.

The invention discloses a novel electric handheld piston assembling device, and relates to piston assembling, the novel electric handheld piston assembling device comprises a handheld frame, a fixing ring is arranged at the bottom of the handheld frame, and a clamping plate is arranged in the fixing ring; a screw rod is arranged in the handheld frame, a movable sleeve is in threaded connection with the screw rod, the movable sleeve is in sliding connection with the handheld frame, a downward pressing cylinder is fixedly arranged at the bottom of the movable sleeve, and a guide hammer used for installing a piston is fixedly arranged at the bottom of the downward pressing cylinder; the movable sleeve is driven to move up and down by rotating the screw rod, so that the driving frame is driven to move horizontally, the connecting frame is further driven to move, the corresponding sliding blocks move in the radial direction of the fixing ring, the clamping plates are linked through the rotating ring to act synchronously, and clamping and loosening of the piston are achieved. And the initial position of the clamping plate can be adjusted through the threaded groove and the adjusting block, so that the device adapts to pistons with different diameters. According to the device, piston assembling can be conveniently and accurately carried out, piston deflection caused by manual hammering is avoided, operation is easy, and practicability is high.