204 results about "Linear actuator" patented technology

An apparatus and method of controlling a repetitive motion linear actuator (RMLA) accepts a minimum repetition rate and a commanded repetition rate. If the commanded rate is greater than the minimum rate, the RMLA automatically operates in a speed scaling mode by continuously applying the cycles and scaling the cycle length to provide the commanded rate. If the commanded rate is less than the minimum rate, the RMLA automatically operates in a dwell mode by fixing the cycle length and discontinuously applying the cycles, while adjusting a separation between the cycles to provide the commanded rate. In dwell mode, the cycle length can be equal to its maximum allowed value Tmax, or can equal a desired value less than Tmax. The cycle can have any profile shape, such as a sinusoidal shape or a shape that includes periods of deceleration and acceleration separated by constant speed periods therebetween.

This utility model discloses a linear actuator motor with adjustable stroke, relating to the field of motor equipment technology. It includes an actuator box, a lead screw and actuator assembly, a translation adjustment assembly, a limit switch, a screw, and a lead screw nut. In this utility model, the translation adjustment assembly adjusts the position of the limit switch inside the actuator box, thereby adjusting the stroke of the linear actuator motor. The rotation of the screw in the translation adjustment assembly drives the lead screw nut to move linearly along the screw, which in turn drives the limit switch to move linearly along the screw. This allows for position adjustment of the limit switch, and consequently, stroke adjustment of the linear actuator motor. Each rotation of the screw causes the lead screw nut to move the limit switch linearly by one screw pitch. The screw pitch can be selected according to actual needs, effectively ensuring the position adjustment accuracy of the limit switch, and thus ensuring the stroke adjustment accuracy of the linear actuator motor.

1. Name of the product in this design: Friction Plate. 2. Purpose of this design: To be installed inside an electric linear actuator to brake the motor of the electric linear actuator. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design.

The invention relates to a Tripteron-type parallel manipulator configured to provide three purely translational degrees of freedom by means of three orthogonal linear actuators and their respective parallelogram-shaped kinematic chains. The system incorporates an auxiliary active support arranged on the Z-axis, intended to apply an upward vertical force to the moving platform (11) in order to reduce the load borne by the kinematic chain and the main Z-axis actuator. This support can be implemented using electric or pneumatic actuators, elastic elements, or cable-driven mechanisms, allowing for active, passive, or semi-active operating modes.The integration of the auxiliary support increases the manipulator's load capacity, improves its dynamic stability, and reduces the mechanical demands on the vertical actuator, while maintaining the purely translational kinematics and structural characteristics of the original Tripteron unchanged.

This invention relates to the field of mining exploration technology, and discloses an intelligent mining engineering exploration device and its usage method. The device includes a body and a lifting mechanism. A base is fixedly mounted on the body, and a frame is rotatably mounted on the base. A lifting platform is slidably mounted on the frame. The lifting mechanism is mounted on the frame to drive the lifting platform up and down. A rotating mechanism is connected to the bottom of the lifting platform via a universal joint. A drill rod is fixedly mounted at the drive end of the rotating mechanism, and a drill bit is fixedly mounted at the bottom end of the drill rod. A straightening component is mounted on the outside of the drill rod. The straightening component includes a sliding ring sleeved on the outside of the drill rod, and several linear actuators are fixedly mounted on the surface of the sliding ring. By relying on the gravity coordination of the universal joint and the closed-loop feedback of the pressure sensor, the device can automatically complete the vertical alignment of the drill rod and dual intelligent straightening, significantly improving the verticality of the borehole and the exploration accuracy, and reducing the risk of swaying and stuck drill.

The present invention is entitled "Electric Brake." In some examples, the present invention provides a brake assembly including an actuator assembly configured to cause translation of a piston to compress a disc stack. The actuator assembly is configured to generate a first torque about a motor axis using a motor and a second torque from the first torque using a harmonic drive. The actuator assembly can include a gear set configured to cause a linear actuator to translate the piston using the second torque. In some examples, the actuator is configured to translate the piston along a compression axis that is different from the motor axis.

This invention provides an improved sliding mode active disturbance rejection control (ADRC) method and system for an automotive shimmy system based on an electromagnetic linear actuator. Addressing the system's strong nonlinear characteristics and unknown external disturbances, a mathematical model of the automotive shimmy system based on the electromagnetic linear actuator is established. A nonlinear tracking differentiator is constructed to process the desired input signal of the wheel shimmy angle, rationally arrange the transient process, and synchronously extract the differential signal of the desired signal. A continuous and smooth Ifal function is constructed based on trigonometric sine and inverse proportional functions, and a novel extended state observer is designed to estimate the system's internal and external disturbances in real time. A super-helical sliding mode control law based on the hyperbolic tangent function is designed to replace the error feedback control law in the traditional ADRC, outputting a control voltage. This invention effectively estimates and compensates for the impact of vehicle state parameter changes, model uncertainties, and external disturbances on system stability, improving dynamic performance and control accuracy, and exhibiting good robustness and anti-interference capabilities.

A kind of wine lees grab, it is related to the technical field of brewing, including a grab body, the middle of the top of the grab body is equipped with connecting plate, connecting rod is installed on the rotating shaft between the two connecting plate, the top of the grab body one side is equipped with hinged seat, the hinged seat is rotatably connected with swing rod, sliding sleeve is equipped on the connecting rod, lifting rod is slidably fitted in the sliding sleeve, the lower end of the lifting rod is rotatably connected on swing rod, linear actuator is equipped on the connecting rod, the telescopic rod of linear actuator is connected on lifting rod.The utility model discloses linear actuator is arranged on the connecting rod, cooperates with protective cover and sealing structure, effectively isolates the contact of wine lees and key moving parts, prevents moisture penetration and impurity invasion, guarantees the normal working environment of transmission mechanism and lubricating system.

A linear actuator for a high-pressure pump (1), the actuator comprising a rolling spindle with a shaft (10), a first nut (21) and a second nut (22), the nuts (21, 22) operatively connected to a first threaded section (11) and a second threaded section (12) of the shaft (10), respectively, the sections being configured with opposite threading directions, such that when rotating the nuts (21, 22) in opposite directions, the shaft (10) is axially movable with respect to the nuts (21, 22) in one same direction and an actuator for driving the movement of the shaft (10) simultaneously rotating the nuts (21, 22) in opposite directions.

1. Name of the product in this design: Silent Electric Linear Actuator (827). 2. Application of this design: It is used in push rods of industrial lifting systems. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

A linear actuator device including a lens assembly that has a lens, a linear actuator that linearly drives the lens assembly in a linear actuation direction, and a linear guide that has a main guide bar for supporting the lens assembly in a state movable in the linear actuation direction. The lens assembly has two main engagement portions which are arranged with a certain distance in the linear actuation direction and engaged with the main guide bar. The linear actuator is arranged between the two main engagement portions and at the same time arranged in a position overlapping the lens on a projected plane viewed from a direction orthogonal to the linear actuation direction, to apply thrust to the lens assembly in a direction substantially coinciding with the linear actuation direction.

A lift apparatus to mount and remove a structure on a vehicle includes a lower platform assembly configured to be positioned under a vehicle and an upper platform assembly that is positioned at a height above the lower platform assembly and configured for supporting a structure over a vehicle surface. A vertical support is mounted to the lower platform assembly and the upper support assembly is mounted to the vertical support. The vertical support extends in length for raising and lowering the upper platform assembly with respect to the lower platform assembly. A linear actuator extends vertically and generally parallel to the adjustable vertical support. The linear actuator is coupled at a first end to the lower platform assembly and coupled at a second end to the adjustable vertical support. The actuator is selectively variable in length for changing the length of the adjustable vertical support to raise and lower the upper platform with respect to the vehicle surface.

This invention relates to the field of sensor calibration technology and discloses an automated calibration platform for a six-axis force-torque sensor. The platform includes a frame, a lateral loading module, a longitudinal loading module, a sensor-under-test (SUTT) fixing module, and a sensor-under-test leveling and alignment module. The frame serves as the supporting structure for the entire calibration platform, providing a stable mounting reference for each module. The lateral loading module is mounted laterally on the frame and applies a horizontal force and a torque around the Z-axis to the central loading platform in a high-precision and controllable manner. Specifically, the lateral loading module includes a lateral linear actuator stepper motor for applying a standard load with high precision. This invention, through the coordinated action of multiple independent lateral and longitudinal loading modules, combined with the control of the linear actuator stepper motor, the tension / compression standard sensor, and the decoupling components, effectively compensates for coupling errors of the sensor under complex stress conditions, thereby improving calibration accuracy.

This invention relates to the field of poultry feed production technology, specifically to an intelligent poultry feed production device. The device includes a frame, with a first linear actuator bolted to the top of the frame. A central plate is slidably connected within the frame and fixedly connected to the bottom of a limiting frame. The central area of ​​the central plate is hollowed out, and this hollowed-out area is divided into multiple adjustment spaces by multiple sets of partitions. Servo motors are bolted into these adjustment spaces. Two conveying spaces are formed on the inner sidewall of the central plate. This invention uses a drive motor to rotate a bevel gear set and a bidirectional screw, causing the partitions to contact the sidewall of the frame, dividing the internal space into two groups. This allows for separate aerobic and anaerobic fermentation within the same device, meeting different fermentation needs. During anaerobic fermentation, the expansion membrane is controlled to expand and compress the material, reducing its internal volume. Nitrogen gas is then introduced into the feed pile through a connecting pipe to expel oxygen from the feed ingredients.

This utility model discloses a novel pressure bonding water testing machine, relating to the technical field of fabric processing equipment. It includes a base and an L-shaped mounting frame. A water tank is mounted on the base, and a storage basket connected to the water tank is fixed to the top of the tank. A connecting plate is fixed to the inner wall of the storage basket, and a test piece is mounted on the connecting plate. The test piece includes a test platform with a receiving groove in the middle, in which an absorbent sponge is placed. A storage plate for placing materials is placed on the top of the test platform, and multiple water holes are provided on the storage plate. The side wall of the test platform is an inclined surface sloping towards the inner wall of the storage basket. Four equal-length pressing plates are fixed end-to-end above the storage basket. Multiple linear actuators with telescopic ends fixed to the pressing plates are mounted at the bottom of the mounting frame. This effectively prevents the fabric from shifting during testing and eliminates interference from the judgment of whether the water at the bottom is seeping through or adhering to the fabric.

This invention discloses a six-degree-of-freedom parallel lumbar exoskeleton with human body parameter adaptive function and a kinematic initialization method. The exoskeleton uses linear actuators in both assembly and disassembly configurations: in the assembly configuration, one end of the linear actuator is connected to the lower platform and the other end to the upper platform, with the lower platform used to fix to a first target plane and the upper platform used to fix to a second target plane; in the disassembly configuration, the lower platform is used to fix to the first target plane and the upper platform is used to fix to the second target plane; both the lower and upper platforms are composed of two semi-rings; in the assembly configuration, the linear actuators adopt a heterogeneous layout, using two linear actuators with different initial lengths to shift the workspace of the mechanism towards the front of the human body, thereby obtaining a larger range of forward flexion; in the disassembly configuration, it can be used to obtain the desired rehabilitation trajectory; furthermore, after the exoskeleton is strapped in, the method provides a kinematic control model by measuring the physical gap variable between the moving and fixed platforms, reflecting individual body shape differences, and reconstructing it, thereby obtaining the corrected actual coordinates of the hinge points, thus ensuring, to a certain extent, accurate matching between the exoskeleton's motion center and the user's actual motion center.

An arrangement for dust blocking in a cone crusher, a cone crusher, and a method for the dust blocking and manufacturing the cone crusher, in which a crusher head is supported by a support cone. A linear actuator vertically moves the crusher head for setting adjustment and / or tramp iron release. A lower surface of the support cone, at least in part, defines a downwards opening annular cavity. The crusher head radially movably supports a seal ring. A lip is formed for the annular cavity by the seal ring. A slip ring extends into the annular cavity beyond the seal ring and forms a counter-surface for the seal ring. The slip ring at least in part defines a pressurised gas supply channel and an entry channelling interconnecting the pressurised gas supply channel to the annular cavity.

This application provides a grinding device for the cut edges of aluminum alloy door and window frames, belonging to the field of window frame grinding technology. It includes a machine body, with a bracket hinged to one side of the machine body. A second linear actuator is disposed between the bracket and the machine body, driving the bracket to rotate around its hinge point with the machine body. A support plate is disposed on the bracket, and a clamping assembly is rotatably connected to the upper surface of the support plate for clamping and positioning the workpiece. A second motor is disposed at the bottom of the support plate for rotating the clamping assembly. A displacement assembly is disposed on the bracket, driving the support plate to move linearly along the length of the bracket. After grinding one end of the workpiece's cut edge, this device can switch to grinding the other end's cut edge without requiring secondary disassembly and repositioning of the workpiece, thus improving overall processing efficiency.

The invention relates to a device designed to assist with performing lower limb stretching exercises, utilising leg supports, movement mechanisms based on linear actuators, adjustable supports, manual controls and a control system that enables the operation of the electronic components. In addition, the lower limb stretching device according to the invention comprises a footrest that can slide along a linear guide using a wheel mechanism at the lower part of the footrests, and also includes a lifting mechanism on the footrest to increase the degree of stretching.

The objective is to provide a dustproof structure for a linear actuator that completely prevents dust from entering and has a dustproof and splashproof structure (IP65) that can withstand water jets. Furthermore, it aims to provide a dustproof structure for a linear actuator that can be used even in a vacuum processing chamber. [Solution] A dustproof structure for a linear actuator in which a rectangular movable body having a mouth-shaped end face moves in a linear motion, functionally connected to a ball screw shaft via a ball nut that screws onto the ball screw shaft by the rotation of the ball screw shaft located between a first end plate and a second end plate, A first bellows that covers the entire circumference from one end face of the moving body to the first end plate, and a sealing material that seals the one end face and the end face of the first bellows, A second bellows that covers the entire circumference from the other end face of the moving body to the second end plate, and a sealing material that seals the other end face and the end face of the second bellows, The device includes an electric motor fixing and dustproof cover provided on the outside of the first end plate, which covers the entire circumference from the coupling-side end face of the drive motor, which is connected by a coupling to one end of the ball screw shaft extending from the through hole of the first end plate, to the first end plate, fixing the drive motor to the first end plate and preventing dust from entering the through hole.

This invention provides a zero-gap holding linear actuator and its installation method, belonging to the field of spacecraft structures. The zero-gap holding linear actuator includes: an inner cylinder, an outer cylinder, a base, an elastic plate, and an electric telescopic rod assembly. The inner cylinder, outer cylinder, base, and elastic plate are all made of carbon fiber or Invar. The elastic plate is disposed within the base and fixed at one end to the bottom of the inner cylinder. The inner cylinder is nested within the outer cylinder, and an interference fit is achieved through the elastic plate. The electric telescopic rod assembly engages with a limiting hole at the bottom of the inner cylinder via a limiting screw, achieving anti-rotation and push-pull actuation. This actuator achieves ultra-low thermal deformation through low-expansion materials, and the electric telescopic rod does not require power for holding, solving the problems of large on-orbit thermal deformation and difficulty in achieving zero gap in existing spacecraft actuators. It has advantages such as high stability, compact structure, and strong adaptability to the space environment, and is suitable for on-orbit attitude adjustment of high-precision antennas or payloads in spacecraft.

A device for wear testing includes a frame, a rotary actuator, and a linear actuator spaced apart from the rotary actuator along a longitudinal axis of the frame. The device further includes first and second specimen holding units. The first specimen holding unit includes a seat connected to the linear actuator, a plate engaging with the seat, and a first thrust bearing connected to the plate and at least one first diaphragm plate connected to the frame. The second specimen holding unit includes a shaft connected to the rotary actuator and a second thrust bearing connected the frame. The rotary actuator is configured to rotate a second specimen about the longitudinal axis. The linear actuator is configured to move a first specimen along the longitudinal axis, such that the first specimen engages with the second specimen.

The utility model discloses a PVC floor production auxiliary laminating and pressing device, including frame and bearing station, its characterized in that, the frame is installed with conveyer, and a plurality of L type limit boards are installed on the conveyer, and the frame is installed with the pressing mechanism, and the bearing station is equipped with the recess, and the recess is installed with the linear actuator, and the output of linear actuator is installed with the clamping block, and the recess is slidably connected with the baffle, and the clamping block is slidably connected with the baffle, and the recess is equipped with the slope. Through the cooperation of L type limit board and baffle, the fixing of the plate during pressing is realized, and through the cooperation of conveyer and linear actuator, the linear actuator can be retracted after the pressing of the plate, and the conveyer drives the pressed plate to move forward through the L type limit board, so that the fixing time of the fixing device is saved, and the production efficiency is improved.

This invention relates to the field of valve sealing performance testing technology, and more particularly to a sealing performance testing device for valve body production, comprising a water tank; a lifting component mounted on the water tank; a connecting frame fixedly connected to the telescopic part of the lifting component; a clamping testing assembly mounted on the lower side of the connecting frame; and a first linear actuator arranged in a front-to-back orientation fixedly connected to the upper side of the connecting frame; an adaptive transfer assembly mounted on the moving part of the first linear actuator; the adaptive transfer assembly including a second linear actuator; and a second linear actuator arranged in a vertical orientation fixedly connected to the moving part of the first linear actuator, the second linear actuator having two moving parts, an upper mold fixedly connected to the upper moving part, and a lower mold fixedly connected to the lower moving part; the shapes of the upper and lower molds are adapted to the shape of the valve body; when the moving part of the first linear actuator moves forward, the upper and lower molds move away from the top of the water tank. This invention allows for convenient and orderly placement of the valve body into the lower mold.

This invention relates to the field of visual perception and navigation technology for intelligent devices, specifically a biomimetic binocular visual perception device and method based on baseline and pitch angle control. The device includes a shared pitch platform and left and right cameras mounted thereon. The overall pitch angle is controlled by a rotation actuator, and the position of the right camera is adjusted by a linear actuator to change the baseline. A control unit executes perception, adjustment, calibration, and decision-making steps. This invention resolves the contradiction between near-field blind spots and long-range accuracy by extracting the distance to the nearest obstacle within the collision cone and actively adjusting the baseline. It actively adjusts the pitch angle based on the target's projected coordinates to lock onto the target, performs calibration using static feature point bundle adjustment, and finally fuses the target heading and safe obstacle avoidance heading based on the dynamic weights of the Sigmoid function. This improves the environmental adaptability, measurement accuracy, and flight safety of UAVs in complex environments.

The utility model belongs to bamboo processing technical field especially relates to a kind of automatic quantitative green scraping equipment of phyllostachys pubescens, including base and the machine table of being installed on the upper end of base, the right side of machine table top is equipped with scraper table, the through slot is opened in the scraper table, the scraper table right side outer wall is equipped with green scraping subassembly, the left side of machine table is fixed with side seat, the linear actuator is installed in the side seat bottom end. Through the top block of being installed with transverse movement on machine table, the feeding amount and advancing speed of first guide slide bar can be accurately controlled by linear actuator, first guide slide bar drives top block to be able to carry out transverse movement along first slide, top block pushes phyllostachys pubescens on machine table, phyllostachys pubescens can pass through the through slot on scraper table, let scraper clean phyllostachys pubescens surface quantitatively, accurately control the thickness and depth of green scraping, effectively solve the problem of uneven thickness of manual operation.