985 results about "Unit/actuation" patented technology

The invention discloses a multi-device and multi-mode centralized control system which comprises an interaction control end and a device assembly. The interactive control end is configured according to three different control modes of centralized control, independent control and hybrid control, in the centralized control mode, a set of main control unit is configured for all devices, and the main control unit comprises a main control server which is used for operating a main control program and coordinating and controlling operation of all device components; in the independent control mode, each equipment component is provided with a corresponding embedded controller, and the embedded controller comprises an embedded control server which is used for operating a main control program for controlling the corresponding equipment component; in the hybrid control mode, one or more independent devices are provided with embedded controllers, the embedded controllers communicate with the main control server, the device assembly comprises a device body and a driving unit, and the device body is driven by the driving unit to achieve various operation functions. According to the invention, centralized control of multiple devices in a large-scale manufacturing factory can be realized.

The invention relates to the technical field of mechanical arm control, in particular to a flexible mechanical arm control system which comprises a flexible mechanical arm body, a driving unit, a driving state sensing unit, an upper computer controller and an intelligent controller. The flexible mechanical arm body is formed by connecting a plurality of flexible cavity muscles and a plurality of connecting modules in series, and the clamping mechanism is installed at the front end of the flexible mechanical arm body; the driving unit is used for driving the flexible joint of the mechanical arm to move and deform by adjusting the air pressure and driving the clamping mechanism to act by adjusting the air pressure; the driving state sensing unit comprises a shape sensing unit, a tail end pose sensor and a driving state sensor; high-precision reconstruction of the full state of the mechanical arm is achieved, an intelligent control algorithm is combined, accurate trajectory tracking and point position control can be achieved, closed-loop control can be achieved only through a body sensor without depending on external visual equipment, and the applicability and reliability of different scenes are improved.

The invention relates to the technical field of universal joint machining, in particular to a three-pin-column machining method and system. The three-pin column is positioned and clamped on the clamping assembly; wherein positioning and clamping comprise the steps that a positioning unit of the clamping assembly abuts against two supporting shafts of the three-pin column, and a second clamping unit of the clamping assembly expands a connecting hole of the three-pin column; a supporting shaft, at the machining position, of the three-pin column is machined; the positioning unit relieves the abutting of the two supporting shafts, and the second clamping unit drives the three-pin column to rotate until one of the two unmachined supporting shafts reaches the machining position; the positioning unit abuts against the two supporting shafts of the three-pin column, and the supporting shaft at the machining position is machined. In this way, the problem that the machining efficiency of the three-pin column is low is solved.

The utility model discloses a high-flexibility flexible mechanical finger supporting forward and reverse holding and a manipulator. The mechanical finger comprises a middle finger section, a base finger section and an end finger section, wherein the base finger section and the end finger section are rotationally connected with the two ends of the middle finger section respectively. Driving units are arranged in the end finger section, the middle finger section and the base finger section; bevel gear transmission units are arranged at the tail end of the end finger section, the tail end of the middle finger section and the tail end of the base finger section; the driving units are in transmission connection with the corresponding bevel gear transmission units; the driving unit drives the end finger section and the base finger section to rotate by taking the corresponding bevel gear transmission unit as a central shaft; through the structure and position design of the micro driving motor and the bevel gear transmission unit, each finger and each knuckle of the manipulator can be flexibly controlled, so that the manipulator has higher bionic flexibility and more precise grabbing capacity, and can be suitable for different scene requirements; by means of the special inserting mode between knuckles, the left-right hand grabbing function of the single mechanical arm is achieved.

The invention relates to the field of cable cabling, in particular to density-adjustable cabling equipment and a control method thereof.The cabling equipment comprises a feeding mechanism, a pre-deformation mechanism, a bundling mechanism and a control unit; the feeding mechanism comprises a first guide disc driven by a driving unit to rotate, a main unwinding wheel used for unwinding a main wire core and a plurality of auxiliary unwinding wheels used for unwinding stranded cables. The pre-deformation mechanism comprises a pre-deformation device, and the pre-deformation device is provided with a first diameter measuring unit and a second diameter measuring unit; the bundling mechanism comprises a box body and a pulling piece, the distance between the box body and the pre-deformation mechanism is adjustable, a cabling through hole for a main cable core to penetrate through is formed, and the control unit can calculate a target spiral angle of the stranded cable under the condition that the preset distance is met, and further calculates the rotating speed of the first driving unit and the pulling speed of the pulling piece; according to the invention, the cabling process can be accurately controlled, the cable coating density can be flexibly adjusted, the cabling quality can be guaranteed, and the production reliability can be improved.

The invention relates to the technical field of automatic machining equipment, in particular to a bending method and a bending device.The bending method provides bending device.The bending device comprises a first bending unit and a second bending unit, the first bending unit is provided with a first bending part, and the second bending unit is provided with a second bending part; the method comprises the following steps: transferring a flexible structure to a first bending unit; the first bending part is driven to do jacking motion in the first direction to jack the first bending position of the flexible structure, so that the flexible structure forms a first bending structure at the first bending position; the flexible structure bent for the first time is transferred to a second bending unit; and the second bending part is driven to do translational motion in the second direction, so that the flexible structure is pushed to be close to the position of the second bending position, and the flexible structure forms a second bending structure at the second bending position. The invention mainly aims to provide a bending method and aims to realize secondary bending of a flexible structure.

The invention relates to the technical field of shock absorption, in particular to an active shock absorber and an installation method. The active damper comprises a damping assembly and a driving unit. The damping assembly comprises an outer cylinder unit and a piston unit; the outer cylinder unit comprises an outer cylinder body, a first opening and a second opening; part of the piston unit is movably arranged in the outer cylinder and divides the outer cylinder into an upper cavity and a lower cavity. The first opening is communicated with the upper cavity; the second opening is communicated with the lower cavity. The driving assembly comprises a driving unit and a first supporting unit; the driving unit inlet / outlet is communicated with the first port and the second port; the first supporting unit comprises a first connecting module, a second connecting module and a third connecting module; the first connecting module and the third connecting module are respectively connected with the driving unit; the second connecting module is arranged between the first opening edge and the second opening edge; the second connecting module is connected with the outer cylinder body; and the second connecting module is connected with the side walls in the first port and the second port. Therefore, the problem that when the driving structure is connected to the outer side of the cylinder body, fixation is not firm enough is solved.

The invention relates to the technical field of pipe cutting, and discloses a metal pipe cutting device which comprises a cutting table, and a cutting machine, a first supporting ring and a second supporting ring are sequentially arranged on the top face of the cutting table. Wherein the first supporting ring is fixedly connected to the top face of the cutting table, a first supporting assembly is arranged on the inner ring side of the first supporting ring, and the supporting end of the first supporting assembly makes rolling contact with the pipe so that the pipe can be connected with the first supporting ring in a sliding mode and fixed to the axis of the first supporting ring; the second supporting ring is slidably connected with the cutting table, a second supporting assembly is arranged on the inner ring side of the second supporting ring and comprises a supporting plate connected with the pipe so that the pipe can be fixed relative to the second supporting ring, a driving unit is arranged on the second supporting ring, and the driving end of the driving unit is connected with the supporting plate. The supporting plate moves in the axial direction of the pipe fitting and is used for enabling the pipe fitting to stretch out of the second supporting ring in the axial direction. The cutting efficiency and effect of the metal pipe can be improved, and the utilization rate of cut tailings is increased.

The present invention relates to a mobile transport system (10) for transporting objects, particularly in technical facilities, the mobile transport system comprising: a vehicle frame (12); a pair of first support wheels (41) and a pair of second support wheels (42) rotatably supported; a first drive wheel (71) rotatable about a first drive axis (73) extending in the lateral direction (Y); a second drive wheel (72) rotatable about a second drive axis (74) extending in the lateral direction (Y); and a pitch frame (14) rotatable about a pitch axis (13) relative to the vehicle frame (12), wherein the first support wheels (41) are arranged on the vehicle frame (12) and the second support wheels (42) are arranged on the pitch frame (14). A drive unit (70) is arranged on a pitch frame (14). The drive unit has a drive frame (75), wherein a first drive wheel (71) is rotatably supported on a first rocker arm (81) that can swing relative to the drive frame (75) about a first rocker arm axis (91), and a second drive wheel (72) is rotatably supported on a second rocker arm (82) that can swing relative to the drive frame (75) about a second rocker arm axis (92). The first rocker arm (81) and the second rocker arm (82) are connected to each other via a connecting unit, such that the swinging motion of the first rocker arm (81) about the first rocker arm axis (91) in a first swinging direction (A) causes the second rocker arm (82) to swing about the second rocker arm axis (92) in a second swinging direction (B) opposite to the first swinging direction (A).

To provide a robot and a robot control method capable of suppressing shaft vibration. [Solution] The robot comprises a robot arm, a shaft that moves linearly along the central axis relative to the robot arm, a hand attached to the shaft, a first inertia sensor that measures the inertia in the direction along the central axis of the shaft, a second inertia sensor that measures the inertia in the direction perpendicular to the central axis of the shaft, a first drive unit that moves the shaft along the central axis, and a control unit that controls the drive of the first drive unit. The control unit also performs feedback control on the first drive unit based on the output of the first inertia sensor, determines whether the vibration of the shaft is normal or abnormal based on the output of the second inertia sensor, and sets different conditions for feedback control depending on whether the vibration is abnormal or normal.

A moveable and demountable workpiece processing bench includes a hollow mounting beam for mounting equipment, a workpiece processing tool releasably mounted on the mounting beam, a positioning arm which is mounted movably in a longitudinal direction inside the hollow mounting beam and which includes a workpiece stopper at an end distal from the workpiece processing tool, and a drive unit, mounted on the mounting beam. The drive unit includes displacement means configured to move the positioning arm to a desired position. The displacement means includes a gear drive, which engages in a rack of teeth on the positioning arm to move the positioning arm to a desired position; and a length control unit for controlling the displacement means. The length control unit includes a length gauge configured to measure the length Lmeasured from the workpiece stopper to a predetermined surface of the workpiece processing tool; and a wireless communication unit configured to at least receive information from a user-controlled device about a desired length of Lworkpiece from a first end of a workpiece to a processing position on the workpiece. The length control unit is further configured to position the workpiece stopper of the positioning arm at a desired length Lworkpiece from the workpiece processing tool, by moving the positioning arm until Lmeasured=Lworkpiece so that the workpiece can be processed at a desired length Lworkpiece from the first end of the workpiece when it rests against the workpiece stopper.

The invention relates to the technical field of needle grinding machines, in particular to a five-grinding-head needle grinding machine which comprises a needle grinding machine rack, a card clothing roller used for winding and installing card clothing is rotatably installed on the inner side of the needle grinding machine rack, and five-grinding-head mechanisms are arranged on the two sides of the needle grinding machine rack respectively. A five-grinding-head mechanism formed by a side grinding head, a pressing grinding head, a fine grinding head, a flat grinding head and a rough grinding head is adopted for comprehensively grinding card clothing, and the sharpness, flatness and smoothness of a needle are improved; through the optimized design of the structure of the driving shaft rod unit, the needle grinding unit can be driven, the card clothing grinding procedure is achieved, the lubricating and cooling functions can be integrated, and the service life of the structure is prolonged; and through combination with the shaft rod supporting unit, the shaft rod supporting unit not only can meet the requirement for limiting and supporting when the driving shaft rod unit is driven, but also can protect the driving shaft rod unit and meet the requirement for intermittent supply of lubricating oil, and therefore the effect that one object has multiple purposes is achieved.

The utility model relates to the technical field of mining equipment, and provides an excavator working device with a fine-adjustable bucket, which comprises a rack, a bucket and a driving assembly unit, the driving assembly unit comprises a lifting mechanism, a bucket adjusting mechanism and a control unit; the lifting mechanism is used for loading and unloading materials through the bucket, and the bucket adjusting mechanism is used for achieving transverse swing of the bucket. The control unit is used for controlling the actions of the lifting mechanism and the bucket adjusting mechanism; the lifting mechanism is arranged on the rack; the bucket adjusting mechanism is arranged on the lifting mechanism, and the bucket is arranged on the bucket adjusting mechanism. According to the utility model, the decoupling with the movement of the vehicle body is realized when materials are loaded, the loading and unloading tasks of the materials can be still completed under the condition that the position of the vehicle body is kept unchanged, the materials are more flexibly shoveled, and the oil consumption is reduced; when meeting uneven road conditions, the bucket can be controlled to be finely adjusted to change the gravity center, and stable driving is achieved; energy consumption is saved, accurate dynamic weighing is achieved, and control precision is improved.

The invention discloses a plastic bottle one-step full-servo injection molding device and a plastic bottle one-step full-servo injection molding method, and particularly relates to the technical field of injection molding equipment. Comprising a rack, a fixed mold, a movable mold, a female mold, an injection port, a male mold, an injection cylinder, a metering injection unit, a communication seat, a cylindrical part, a fixed cylinder, an injection sleeve, a shrinkage cylinder, an injection nozzle, a deformation joint, a taper hole and a pressure relief unit, and the pressure relief unit is used for driving the injection sleeve to move in the fixed cylinder. According to the injection mold, when the pressure of plastic melt in the communication base is large, the pressure relief unit is triggered to act, the pressure relief unit drives the injection sleeve to move in the direction away from the fixed mold, then the shrinkage barrel is separated from the state that the shrinkage barrel is extruded by the taper hole, the shrinkage barrel is converted into elastic expansion deformation from original elastic shrinkage deformation, and then the opening portion of an injection nozzle of the shrinkage barrel is expanded; the injection pressure of plastic melt is reduced, large impact on the surface of a female die or a male die is avoided, and meanwhile the pressure loss phenomenon is reduced.

The invention provides a 35kV isolation switch opening and closing device. The 35kV isolation switch opening and closing device comprises a substrate, a contact unit, a transmission assembly and a driving unit. The substrate is provided with two composite post insulators which are arranged at an interval; the contact unit comprises a first connecting part and a second connecting part, the first connecting part is connected with one composite post insulator, and the second connecting part can be connected with the other composite post insulator; the transmission assembly is arranged in the vertical direction, and the top end is connected with the second connecting part. The driving unit is connected with the bottom end of the transmission assembly and used for driving the transmission assembly to move in the vertical direction, and the transmission assembly drives the second connecting part to move; wherein the driving unit drives the transmission assembly to move, and the transmission assembly drives the second connecting part to be in contact with or disconnected from the corresponding composite post insulator, so that switching-on or switching-off is realized. The invention provides a 35kV isolation knife switch opening and closing device, and aims to solve the problem of poor safety caused by manual close-range opening and closing of an isolation knife switch in the prior art.

The invention relates to an integrated machine tool suitable for machining and detecting the inner wall and the outer wall of a small-diameter shell workpiece, and belongs to the technical field of numerical control machine tools. The integrated machine tool comprises at least two stand columns, the stand columns jointly support a box-type beam, a first ram is arranged on the box-type beam in a sliding mode, the first ram is connected with a first machining head, and the first ram is driven by a first Z-direction driving unit; the device further comprises a cross beam, at least one stand column is slidably connected with the cross beam, the cross beam is driven by a second Z-direction driving unit, and the cross beam is slidably provided with a second ram which is driven by a third Z-direction driving unit. The size of the second ram is smaller than that of the first ram, and the size of the second machining head is smaller than that of the first machining head. The small-diameter shell machining device has the advantages that the same machine tool can machine small-diameter shells with different inner diameters and depths, and the universality is improved.

A hydraulic hand tool has a first oil-return channel, a second oil-return channel, and an oil-return-controlling mechanism. Hydraulic oil can carry out the oil-return process through the first oil-return channel and the second oil-return channel. The oil-return-controlling mechanism has a control channel, a blocking unit, an elastic unit, a driving assembly, and a control module. The control channel communicates with the first oil-return channel and the second oil-return channel. The blocking unit is mounted in the control channel. The elastic unit presses against the blocking unit to block the control channel and thus isolate the first oil-return channel and the second oil-return channel. The driving assembly is controlled by the control module. The driving assembly makes the blocking unit abut against the elastic unit and move, and thus the first oil-return channel and the second oil-return channel communicate with each other.

An open and closed circuit parallel drive system and a control method based on a four-chamber hydraulic cylinder are provided. The system includes: a closed pump-controlled drive unit and an open valve-controlled drive unit. The four-chamber hydraulic cylinder is driven by the open valve-controlled drive unit with a large load power, and the operating velocity and displacement of the four-chamber hydraulic cylinder are controlled by the closed pump-controlled drive unit with a small load power, thereby improving the linearity and stability of the four-chamber hydraulic cylinder control and reducing the system installed power and throttling loss.

A drive device has a transmission housing with an external rotor-type electric motor. The electric motor is coupled to the transmission and is actuated by a motor electronic unit. The electric motor has a stator and a rotor which circulates about the stator and is connected to a drive shaft that is guided through a stator bushing with a first sleeve section for holding the stator bushing in the transmission housing in a rotationally fixed manner and with a second sleeve section. A groove frame insulation which surrounds the stator teeth in the axial direction is placed on the second sleeve section. An annular element which is arranged between the first sleeve section and the groove frame insulation and which has a joint element is placed on the second sleeve section of the stator bushing. The joint element engages into a joint contour of the first sleeve section.

The invention relates to the field of material testing, and discloses an indentation testing device which comprises a supporting unit, a testing unit and a driving unit, an electric cylinder of the driving unit can drive a pre-contact assembly and an indentation assembly to reciprocate, so that rapid movement in a large range is realized, and a contact ball and a pressure head can rapidly approach a tested piece; the contact driver can drive the contact ball to reciprocate, so that the contact ball is in contact with the tested piece, and the contact ball is connected with an elastic body made of a memory alloy material; when the pressing head is pressed in, the piezoelectric stack of the driving unit is used for driving the pressing rod and the pressing head to move through the piezoelectric amplification mechanism, and the pressing-in precision of the pressing head is improved. According to the invention, the electric cylinder is used for macroscopic driving, and the piezoelectric stack is combined to precisely control the pressure head, so that the test precision and the test efficiency are improved, and a proper mechanical model is established after a press-in load-depth curve is obtained. The invention further provides an indentation testing method.

The utility model provides a throwing device and a throwing unmanned aerial vehicle thereof, and the throwing device comprises a support assembly which comprises a bottom plate, a first end plate connected with the bottom plate, and a second end plate connected with the bottom plate; the first end plate is opposite to the second end plate; the clamping assembly comprises a first clamping unit and a second clamping unit; the first clamping unit is arranged on the first end plate, the second clamping unit is arranged on the second end plate, the first clamping unit and the second clamping unit are used for clamping a thrown object, the driving assembly comprises a driving unit and a fixing unit, the driving unit and the fixing unit are both arranged on the bottom plate, and an output shaft of the driving unit is connected with the fixing unit; the fixing unit is configured to fix the first clamping unit and the second clamping unit to be in a clamping state under the condition that the output shaft of the driving unit has no output; under the condition that the output shaft of the driving unit outputs drive, clamping and fixing of the first clamping unit and the second clamping unit are released, the weight of the throwing device is reduced, and the structure of the throwing device is simplified.

The utility model relates to the technical field of machine tools, in particular to a precise indexing rotary table for a shaft B of a vertical grinding machine. The precise indexing rotary table is provided with a base, a driving unit is arranged on the base and connected with an RV speed reducer, the RV speed reducer is connected with the rotary table, a plurality of locking units are arranged between the rotary table and the base, and each locking unit comprises a cylinder body arranged on the base. A flaring type hinged pipe is arranged on the cylinder body, a piston rod is arranged in the cylinder body, a disc spring is arranged on the periphery of the piston rod, a T-shaped groove bolt is arranged on the piston rod, an annular T-shaped groove is formed in the rotary table, and the T-shaped groove bolt is arranged in the annular T-shaped groove. By arranging the RV speed reducer, it is ensured that the rotary table can accurately rotate to any needed angle, and the requirement of the vertical grinding machine for high-precision indexing is met; meanwhile, due to the use of the RV speed reducer, the processing and manufacturing difficulty and cost are reduced; and by arranging the locking unit, the safety and stability of the equipment are improved, and flexible rotation of the rotary table is achieved.

The present application relates to a speed reduction device and a speed reducer, which are applied to the field of mechanical transmission. The speed reduction device comprises a drive unit, a transmission block, a driving unit and a driven unit, wherein the driving unit passes through the transmission block and is in threaded connection with the transmission block; the drive unit drives the driving unit to generate movement, and the driven unit is driven to generate movement under the drive of the transmission block; and when the drive unit is actuated, the rotating speed of the driving unit is greater than that of the driven unit. The present application has the technical effects that the problem of arranging a speed reduction device with a large reduction ratio in the case where a radial space is limited and an available space is elongated is solved, and the output requirement of a large torque can be met, such that the operation effect of the speed reduction device is improved.

A mobile object 1 according to the present disclosure includes a body 10 provided as a first polyhedron, and rotary-wing modules 20 attached to the body 10 at all vertices of the first polyhedron. The rotary-wing modules 20 each include a rotary wing 21 and a drive unit 22. The drive unit 22 is configured to drive the rotary wing 21. The rotary wings 21 are located outside the body 10 and each have a rotation axis that is a straight line connecting a reference point PO and a corresponding one of the vertices of the first polyhedron. The reference point PO is defined inside the body 10.

The present application relates to wheelchair assembly technical field, specifically is a kind of wheelchair spacer sleeve inner double bearing press fitting device, including mounting bracket, the bottom of mounting bracket is provided with positioning taper column, press fitting seat is slidably installed on mounting bracket, the axis of press fitting seat is on the same straight line with the axis of positioning taper column, the top of mounting bracket is provided with linear driver;Press fitting seat includes shell, the bottom of shell is slidably installed with several inner struts towards the side of positioning taper column, driving unit is arranged in shell, driving unit drives the synchronous movement of inner struts along the radial direction of press fitting seat, shell is supported to the bearing inner ring placed in the bottom of press fitting seat;The working end of linear driver is fixedly installed with lower pressing frame, the present technical solution is that several inner struts are synchronously moved along the radial direction of press fitting seat, the fixation of different size bearings is realized, when resetting, lower pressing frame can drive driving unit to make inner struts automatically release the support to bearing, the automatic operation of bearing fixation and release fixation is realized.

The blind plate valve comprises a valve seat and a cut-through assembly, the valve seat is provided with an inlet, an outlet and a channel which is arranged between the inlet and the outlet and communicates with the inlet and the outlet, and the cut-through assembly comprises a cut-through piece, a transmission component and at least three driving units. Wherein the cut-through piece further forms a cut-off part capable of blocking the channel and an annular opening communicated with the channel, and the transmission component is driven by all the driving units to rotationally drive the cut-through piece to rotate until the cut-off part or the annular opening of the cut-through piece is located in the channel. All the driving units are arranged on the valve seat in a central symmetry mode with the center position of the channel as the symmetry center and located on the outer side of the channel so that the gravity centers of at least three or more driving units can be located at the center position of the channel, and therefore the driving units can easily drive the cut-through piece to rotate. And the channel is closed and opened.

The application provides a chemical mechanical polishing driving assembly, comprising a driving unit, a driving frame, a rotary joint, a bearing head and a damping shaft system; the damping shaft system comprises a first damping module and a second damping module to absorb vibration in horizontal and / or vertical directions respectively. The damping shaft system provided by the application absorbs vibration energy in different degrees of freedom without increasing the self weight of the driving frame, blocks the transmission path of the vibration energy, prevents the loosening and even failure of parts due to vibration, and improves the stability of wafer grinding quality to some extent.

The utility model relates to a neatening assembly which comprises a neatening base, a neatening support moving unit, a neatening support base, a material box moving unit, a material box fixing unit, a pole piece neatening unit and a neatening support, a neatening support driving unit is installed on the neatening base, and the neatening support driving unit drives the material box support base to move. The normalizing support and the material box moving unit are installed on the normalizing support base, the material box moving unit drives the material box fixing unit to move, and the material box fixing unit fixes qualified material receiving boxes or defective material receiving boxes. According to the arrangement assembly and the four pole piece arrangement units, after pole pieces located on the belt conveying mechanism are arranged well, the knockout assembly knocks the pole pieces to the pole piece supporting unit from the belt conveying mechanism, the pole piece supporting unit places the pole pieces into the qualified material receiving box or the defective material receiving box to be fixed, and therefore the pole pieces are discharged immediately after arrangement is completed; production line length is shortened, pole piece transportation time is reduced, and production efficiency is improved.

The invention relates to a load tap changer (10) for switching over between winding taps (N1,..., N J ,..., N N ) of a regulatable transformer (1) without interruption, comprising at least one selector unit (30) for preselecting to a selected winding tap (N J ) without power, at least one load switching unit (40) for actually load switching from a previous winding tap (N J _i) to the preselected winding tap (N J ), at least one gear mechanism (50) with a first gear wheel (31) and a second gear wheel (41), wherein the first gear wheel (31) is assigned to the selector unit (30) and the second gear wheel (41) is assigned to the load switching unit (40), a drive shaft (60) which is actuated by a motor drive (70), the first gear wheel (31) and the second gear wheel (41) are directly in mechanical action connection with each other, so that the gear wheels (31, 41) can be actuated simultaneously, the drive shaft (60) can drive the first gear wheel (31) or the second gear wheel (41).

The shearing device comprises a base, two shearing mechanisms, a feeding mechanism and a discharging mechanism, a track and a conveying line are arranged on the base, the two shearing mechanisms are installed on the track in a sliding mode, each shearing mechanism comprises a shearing frame, a driving cylinder and a cutter with an arc-shaped cutter head, and the driving cylinders are connected with the feeding mechanism and the discharging mechanism. The cutter is matched with a lower blade plate on the shearing frame to achieve shearing, an inclined discharging belt is arranged in the shearing frame to guide waste materials to a conveying line, a two-way lead screw driving unit is arranged in the base and drives the two shearing mechanisms to synchronously move in the same direction or back to back, and the feeding mechanism and the discharging mechanism are the same in structure and each comprise a carrier roller, a liftable pressing roller and a lifting driving assembly. And a steel belt'loop 'is formed through the lifting of the compression roller to realize storage and emptying, so that the continuous operation of the production line during shearing is ensured. The device realizes non-stop on-line shearing of two ends of a welding seam during butt joint of the steel strips, is high in automation degree and good in shearing quality, and remarkably improves the production efficiency.