39results about How to "Limit radial displacement" patented technology

The invention discloses a stationary fixture used for an axial compression stability test of a columnar bent plate. The stationary fixture comprises a down press plate, two L-shaped upright posts and multiple pairs of collets, wherein horizontal surfaces of the two L-shaped upright posts are respectively fixed on the down press plate and are located at the straight sides of two ends of a to-be-tested bent plate, and the multiple pairs of collets are fixed on the vertical surfaces in a segmental manner respectively along the straight sides of the two ends of the to-be-tested bent plate, so that the straight sides of the two end parts of the to-be-tested bent plate are clamped between the collets at two sides. The stationary fixture used for the axial compression stability test of the columnar bent plate, disclosed by the invention, has a simple structure and is suitable for testing bent plates with multiple curvatures as the clamping positions of the L-shaped upright posts and the collets are adjustable.

The invention provides a condensation type solar power generation tracking rotating disc which comprises a fixed part and a rotating part. The fixed part is composed of a chassis with a U-shaped guiding groove, a reduction motor fixed on the chassis, two worm and gear reduction boxes symmetrically fixed on the chassis, more than three studs evenly distributed on the outer side of the U-shaped guiding groove of the chassis and pressing plates assembled on the studs, wherein the reduction motor is respectively connected with driving shafts of the two worm and gear reduction boxes on the chassis through connection shafts. The rotating part is composed of a gear ring with a U-shaped guiding groove at the bottom, more than three steel balls rolling in the U-shaped guiding groove of the gear ring, and two driving gears. The two driving gears are connected with output shafts of the two worm and gear reduction boxes fixed on the chassis symmetrically, the reduction motor drives the driving shafts of the two worm and gear reduction boxes to enable the driving gears assembled on the output shafts of the worm and gear reduction boxes to rotate, and the driving gears are symmetrically meshed with inner teeth of the gear ring to drive the gear ring to rotate so as to enable the upper rotating disc integrated with the gear ring in a fixing mode to rotate.

The invention provides a solar power generation tracking rotating table. The solar power generation tracking rotating table comprises a fixed portion and a rotating portion, the fixed portion comprises a flange ring with a V-shaped guide groove, two direct-current slowdown motors, two transmission shaft seats, more than three guide shafts and guide wheels, wherein the flange ring with the V-shaped guide groove is fixed on a base plate, the two slowdown motors are symmetrically fixed on the base plate, the two transmission shaft seats are symmetrically fixed in the flange ring with the V-shaped guide groove, the guide shafts are fixed outside the flange ring with the V-shaped guide groove, and the guide wheels are assembled on the guide shafts. The rotating portion comprises the rotating table, more than three steel balls rolling in the V-shaped guide groove, a rotating ring, a chain, two driving gears, two driven gears and sprockets, wherein the chain is fixed on the inner side of the rotating ring, and the sprockets are fixed on the driven gears. The two direct-current slowdown motors symmetrically fixed on the base plate are meshed with the driven gears on the transmission shaft seats through the driving gears to drive the sprockets to drive the chain fixed on the inner side of the rotating ring, so that the rotating portion rotates.

The invention discloses a whip restraint device and method for a high-energy pipeline. The whip restraint device comprises a bracket assembly, a first pin base, a first pin shaft, a first speed sensitive hydraulic damper, a second pin shaft, a second pin base, nuts, bolts, a plate type arc pipe clamp, a third pin base, a third pin shaft, a second speed sensitive hydraulic damper, a fourth pin shaft and a fourth pin base. Each of the parts, near the two sides of a high-energy pipeline elbow, of the high-energy pipeline is provided with one or more whip restraint device bodies. When the high-energy pipeline generates heat displacement, the speed sensitive hydraulic dampers follow the high-energy pipeline, and only small resisting force is generated to the high-energy pipeline; and when the high-temperature pipeline is broken at the high-energy pipeline elbow, the speed sensitive hydraulic dampers are locked, and due to rated resisting force formed for the high-energy pipeline, other key devices and the high-energy pipeline are effectively protected.

The invention discloses an automatic conveying device and method suitable for shared bicycle. A shell is arranged at the rear and upper part of a chassis. The left and right sides of the front end ofthe chassis are provided with steering wheels, and the left and right sides of the rear end of the chassis are provided with driving wheels. The driving wheels are controlled to move forward by a driving part, and the steering wheels are controlled to steer by a steering part. A flap plate is hinged in front of the shell, the front surface of the flap plate is fixedly connected with a U-shaped groove plate in the middle, and a locking device capable of locking the rear wheel of a shared bicycle is arranged between the U-shaped groove plate and the flap plate; A lifting mechanism capable of lifting and lowering the tipping plate is arranged at the rear of the tipping plate, and a camera capable of identifying the position of the shared bicycle is arranged at the side of the U-shaped slot plate; The invention uses a camera to identify the rear wheel position of the shared bicycle, and then uses an electromagnet drive to carry out clamping and a motor drive to carry out lifting and conveying, without human participation, so as to improve the conveying efficiency of the shared bicycle. The design of worm gear and worm gear in lifting mechanism has self-locking function, which solves the problem of instability of single car when carrying shared bicycle.

The invention provides a flywheel energy storage device. The flywheel energy storage device comprises a shell; a mandrel; a first radial electromagnetic bearing; a second radial electromagnetic bearing; a first protection bearing; a second protection bearing; a motor; a flywheel; and a friction limiting piece; wherein a radial gap between a stator and a rotor of the second radial electromagnetic bearing is b; the radial clearance between the inner ring of the second protection bearing and the mandrel is a, and a is less than b; the radial gap between the stator and the rotor of the motor is c, and c is greater than b; the motor comprises a wheel body and a hub, and an annular space is formed by the inner ring wall and the outer ring wall of the hub, the friction limiting piece comprises an extending part extending into the annular space, the radial gap between the extending part and the inner and outer ring walls is d, and d is smaller than b. By arranging the friction limiting piece, radial vibration displacement of the mandrel is forcibly limited, the motor rotor is protected against friction with the motor stator, the bearing rotor of the radial electromagnetic bearing is protected against friction with the bearing stator in cooperation with the protection bearing, and the electromagnetic bearing and the motor are better protected; and the use safety and the service life of the flywheel energy storage device are ensured.

The invention provides a bearing support device and a stiffness calibration system and method, and relates to the technical field of aircraft structural strength test verification. The bearing supportdevice comprises an outer bearing support which provides a first inner annular surface, wherein an annular fixed bearing is arranged on the first inner annular surface. The device further comprises an inner bearing support which provides a second inner annular surface, wherein another annular fixed bearing is arranged on the second inner annular surface. The inner and outer bearing supports are fixedly connected. Axial and radial directions of shaft members are defined by the bearing support device. According to the stiffness calibration system and method, which are provided by the invention,rigidity calibration of the outer bearing support and the inner bearing support is carried out through a load applying mechanism and a displacement gauge; the test method is simple and reliable; andthe test precision is high.

The invention discloses a high-speed rolling mill, and belongs to the field of pipe machining equipment. According to the high-speed rolling mill, the machining speed of a pipe is improved. The high-speed rolling mill comprises a frame, a rolling machine head installed on the frame and used for rolling the pipe, a core rod arranged on the frame and used for guiding pipe conveying, a core rod supporting piece arranged on the frame and used for supporting the core rod, a pipe supporting piece arranged on the frame and used for supporting the pipe, a jacking trolley slidably arranged on the frameand used for pushing the pipe to be conveyed to the rolling machine head, and a plurality of core rod holding devices used for limiting the axial displacement and the radial displacement of the corerod during conveying and machining the pipe. The jacking trolley can push the core rod supporting piece so that the core rod supporting piece can overturn in the axial direction of the pipe, and eachcore rod holding device comprises a clamping jaw capable of clamping or loosening the core rod, and a lifting oil cylinder for controlling the lifting of the clamping jaw, so that the influence on themovement of the jacking trolley is avoided.

The invention discloses a hand relieving mechanism of a parking braking cylinder. The hand relieving mechanism of the parking braking cylinder is arranged on a cylinder cover of the parking braking cylinder; the hand relieving mechanism of the parking braking cylinder comprises a hand relieving body, a pawl, a ratchet wheel bush, a first hand relieving spring, a second hand relieving spring, a hand relieving sliding sleeve, a first pawl shifting sleeve and a second pawl shifting sleeve; the ratchet wheel bush is rotationally connected to the cylinder cover; the pawl is rotationally connected to the cylinder cover through a pawl shaft; and one end of the pawl is matched with a toothed groove in the ratchet wheel bush. According to the hand relieving mechanism of the parking braking cylinder, by arranging the first pawl shifting sleeve and the second pawl shifting sleeve, the use of a torsion spring is avoided; and therefore, a problem of failure caused by too long use time brought by the torsion spring is solved; the detaching is convenient during overhauling; it only needs to detect wear capacity of a pawl rotating internal hole, two contacts, the first pawl shifting sleeve and thesecond pawl shifting sleeve; and the workload during overhauling is reduced.

The invention discloses a pile fixing system suitable for a lifting platform, and belongs to the field of lifting platforms. The pile fixing system comprises pile fixing devices, each pile fixing device comprises a locating block, a pile fixing slide block and a telescopic oil cylinder; each locating block is fixedly mounted on a platform main body of the lifting platform; each locating block and the pile leg of the lifting platform are arranged at an interval; each pile fixing slide block is slidably arranged on the platform main body; each pile fixing slide block is provided with a matching surface matched with an oblique plane of each locating block and a friction surface matched with a peripheral wall of the pile leg; one end of the telescopic oil cylinder is fixedly mounted on the platform main body; the other end of the telescopic oil cylinder is connected to the pile fixing slide block; the telescopic oil cylinder is used for driving each pile fixing slide block to slide between a first position and a second position along the corresponding oblique plane; when each pile fixing slide block is located in the first position, the friction surface and the peripheral wall of the pile leg are arranged at an interval; and when each pile fixing slide block is located in the second position, the friction surface abuts against the peripheral wall of the pile leg. The pile fixing system saves manpower.

The invention discloses a mechanical seal assembly. The mechanical seal assembly comprises a static ring assembly and a movable ring assembly; the static ring assembly comprises a static ring seat, a static ring, a corrugated pipe, a straining ring and a spring; the movable ring assembly comprises a shaft sleeve, a movable ring seat and a movable ring; a vibration reduction ring is arranged in the static ring seat and abuts against the position between the outer side wall of the corrugated pipe and the inner side wall of the static ring seat; the straining ring is arranged between the inner wall of the upper end of the corrugated pipe and the inner wall of the lower end of the static ring seat; the straining ring and the corrugated pipe are both provided with fixing grooves; and the spring is arranged in the fixing grooves. According to the mechanical seal assembly, the spring is arranged between the corrugated pipe and the straining ring, so that the situation that the spring generates radial displacement due to vibration of the static ring seat is avoided; and through the damping ring arranged between the corrugated pipe and the static ring seat, the vibration of the static ring seat is reduced, and the sealing performance and the sealing stability are improved.

The invention discloses a power connection device of a power connection terminal of a power supply system, and relates to the technical field of power supply machinery. The power connection device comprises a device body, a power connection end is fixedly connected to the side face of the device body, and a stabilizing mechanism is fixedly connected to the top of the inner side face of the device body. A connecting mechanism is fixedly connected to the position, close to the power connection end, of the surface of the stabilizing mechanism, a regulation and control mechanism is installed on the front face of the device body, a dew reducing mechanism is fixedly connected to the inner side face of the regulation and control mechanism, the regulation and control mechanism comprises a shell and a stepped groove, and the stepped groove is formed in the front face of the device body. According to the power connection device, through the cooperative use of the stabilizing mechanism, the connecting mechanism, the regulating and controlling mechanism, the dew reducing mechanism and other mechanisms, the problems of instant power failure caused by easy dislocation of the relative position between the power connection end and the power connection equipment, how to automatically and effectively limit a wire interface, and how to effectively reduce surface corrosion of electrical apparatus elements in the power connection device are solved.

The invention relates to an anti-whipping energy dissipation limiting device for a high-energy pipe. The anti-whipping energy dissipation limiting device is characterized in that the device is composed of an anti-whipping energy dissipation and limiting annular restraining piece, the annular restraining piece comprises an inner ring cylinder body and an outer ring cylinder body, and a built-in annular cylinder body is embedded into the outer ring cylinder body; a high-energy pipe is sleeved with the inner ring cylinder body, the outer ring cylinder body is an external fixed connecting end to form a fixed cylinder body, and the inner ring cylinder body and the outer ring cylinder body are connected into a whole through the built-in annular cylinder body to form a radial limiting structure; the inner ring cylinder body and the built-in annular cylinder body form a nested movable connection structure, the built-in annular cylinder body and the outer ring cylinder body form a nested movable connection structure, and the built-in annular cylinder body and the inner ring cylinder body are movable cylinder bodies and form a multi-directional rotation and longitudinal limiting structure; and elastic buffer units are arranged at the gap position of the joint of the inner ring cylinder body and the built-in annular cylinder body and the gap position of the joint of the outer ring cylinder body and the built-in annular cylinder body to form a built-in damping and energy dissipation structure. The device has the advantages of preventing the fixed end and the pipeline from being damaged and the like.

The invention provides a locking device and a shell with the locking device. The locking device comprises a sliding lock and an interlocking assembly, wherein the interlocking assembly includes a first locking element and a second locking element; the axial opposite surfaces of the first locking element and the second locking element are respectively provided with a positioning rib and a positioning groove; the radial opposite surfaces of the first locking element and the second locking element are respectively provided with a first locking groove and a second locking groove; when the first locking element and the second locking element are assembled together, the positioning rib and the positioning groove are mutually matched to limit the radial displacement of the interlocking assembly; the first locking groove and the second locking groove are spliced to form a locking cavity, the axial displacement of the interlocking assembly is limited when the sliding lock is inserted into the locking cavity, thereby fixing and locking an interlocking device. The locking device realizes the fixing and locking functions through the above configuration. Meanwhile, the locking device has the advantages of simple structure, small occupied space, easy disassembly, convenient maintenance and low maintenance cost.