47results about How to "Avoid Jittery Situations" patented technology

The invention provides a method and a device for judging jittering of an automobile. The method for judging the jittering of the automobile comprises the following steps of obtaining the speed running working condition of the automobile in a preset time period; obtaining the rotation speed extreme values of the automobile in the preset time period and the frequency sum of the rotation speed extreme values, wherein the rotation speed extreme values comprise the maximum and minimum rotation speeds of the automobile in the preset time period; according to the running working condition, the rotation speed extreme values and the frequency sum of rotation speed extreme values of the automobile in the preset time period, judging whether the automobile has jittering or not in the preset time period. The method has the advantages that according to the maximum and minimum rotation speeds corresponding to the running working condition of the automobile in the preset time period, the jittering of the automobile can be accurately judged in the test process of the whole automobile; by utilizing the results obtained by the method, the jittering of the batch-produced automobile in the actual running process due to inaccurate testing results can be avoided.

The invention relates to a contact mechanism for a double-breakpoint circuit breaker. The contact mechanism comprises a revolution shaft, a movable contact which can be arranged in the revolution shaft in a rotatable way, two baffle rods, two compression bar pieces, and at least two springs, wherein the movable contact comprises two end arms which are rotational symmetric with each other; the two baffle rods are fixedly arranged on the two end arms of the movable contact respectively; the two compression bar pieces are arranged on the two end arms respectively and two ends of each compression bar piece extend to upper and lower sides of each end arm; a first end of each compression bar piece is provided with a shaft, two ends of each shaft are connected to the revolution shaft and the whole compression bar piece can rotate around the shaft, and the middle part of each compression bar piece is pressed against each baffle rod; and one end of each spring is hooked at the first end of one compression bar piece, and the other end of each spring is hooked at a second end of the other compression bar piece. The contact mechanism for the double-breakpoint circuit breaker can improve the positioning stability of the movable contact, has obvious separating and clamping effects and can guarantee a good current limit effect.

The invention discloses a double-derricking cylinder hydraulic control system. The double-derricking cylinder hydraulic control system further comprises a two-position three-way reversing valve, a cartridge valve and a synchronous control device; a port A of a three-position four-way reversing valve communicates with a first working oil port of the cartridge valve; a control oil port of the cartridge valve communicates with a port A of the two-position three-way reversing valve; a port B of the two-position three-way reversing valve communicates with a second working oil port of the cartridge valve; the second working oil port of the cartridge valve communicates with a first oil port of the synchronous control device; a second oil port of the synchronous control device communicates with rodless cavities of a first derricking cylinder and a second derricking cylinder; and rod cavities of the first derricking cylinder and the second derricking cylinder communicate with a port B of the three-position four-way reversing valve. The double-derricking cylinder hydraulic control system realizes the locking function through the two-position three-way reversing valve and the cartridge valve, and prevents shaking of a lifting arm.

The invention discloses a drilling machine beneficial for cleaning up scraps. The drilling machine comprises a supporting frame, wherein a moving frame is arranged on the outer wall of the middle of the supporting frame, a controller is arranged in the middle of the back face of the moving frame, a motor is arranged at the top of the controller, a drill bit is fixedly connected to the middle of the bottom of the controller, and a collecting device is fixedly connected to the position, below the drill bit, of the right side of the top of the supporting frame. The invention relates to the technical field of drilling machines. According to the drilling machine beneficial for cleaning up the scraps, the phenomena that the scraps splash everywhere in the drilling process, the working environment is polluted, and cleaning is not facilitated are avoided, a leakage plate is provided with interception teeth, and fine filtering holes are formed in the leakage plate, so that the scraps in the device can be contacted and separated, a workpiece is further cooled, the drilling deviation caused by too high temperature generated in the drilling process is avoided, deformation caused by adhesion of scrap iron on the surface of a friction workpiece is effectively avoided, and the situation that scraps adhere to the interior of a circulation groove and are not convenient to clean up is further avoided.

The invention discloses a sky train turnout system based on a magnetic part. The sky train turnout system comprises reversing tracks and straight tracks positioned below a bridge, wherein a gap is formed in an intersection part of the reversing tracks; each reversing track is divided into two broken rails by the gap; a connecting track is arranged in the gap and is rotationally connected with thebridge; magnets are arranged on the broken rails; driving cylinders are respectively arranged between the reversing tracks and between the straight tracks; by adjusting the extending lengths of pistonrods, the reversing tracks can rotate around a rotating shaft; in addition, two ends of the connecting track can respectively make contact with one end, close to the gap, on one broken rail, and areadsorbed and fixed by the magnets on the corresponding broken rails. By means of the structure disclosed by the invention, communicating parts between the reversing tracks which are mutually intersected are eliminated, so that a train body can continuously and stably obtain supporting guidance from the connecting track during commutation in the turnout system, and further the conditions of increased shake amplitude of rollers and train body jitter are avoided.

The invention discloses a round steel surface defect online detection system and detection method. The invention belongs to the technical field of metal surface detection. Two fixed box bodies are arranged in the online detection system and are symmetrically erected on the two sides of a round steel roller way; the lower parts of the two fixed box bodies are encircled to form a detection channel through which the round steel passes; a fixed bracket is mounted in each fixed box body; a plurality of industrial camera assemblies are arranged on the two fixed brackets at equal intervals; the camera shooting ranges of every two adjacent industrial camera assemblies are partially overlapped or connected; and arc-shaped light source assemblies are symmetrically installed on the two sides of the detection channel in the circumferential direction. The system provided by the invention has the beneficial effects that images of the surface of the round steel can be comprehensively and clearly acquired on line in real time; image acquisition jitter is avoided; a problem of image signal-to-noise ratio reduction is effectively avoided; round steel surface defects can be accurately identified anddetermined; a problem of influence on normal acquisition work caused by over-high round steel temperature is prevented; and automatic online detection of the round steel surface defects is realized.

The invention discloses a method and control system for eliminating deviation of a limb movement trajectory. The method includes the following steps that the movement trajectory of rehabilitation equipment is set; the starting-point position and end-point position of the movement trajectory, and the movement speed, between the starting-point position and the end-point position, of the equipment ineach unit time are recorded; the rehabilitation equipment is controlled to drive limbs to do trajectory reduction motion from the start-point position of the movement trajectory, wherein the movementspeed in each unit time in the trajectory reduction motion is same as the movement speed when the movement trajectory is set; the stop position of the trajectory reduction motion is recorded; the stop position is compared with the end-point position, if the positions are same, no trajectory errors exist, and if the positions are different, the rehabilitation equipment is controlled to move from the stop position to the end-point position so as to eliminate the trajectory deviation. According to the method and control system for eliminating the deviation of the limb movement trajectory, the consistency of the speeds of trajectory reduction is ensured, shaking is avoided to occur when the rehabilitation equipment is used for training, and the smoothness and accuracy of limb rehabilitation exercise are improved.

The invention discloses a wire leading device. The wire leading device is used for leading a straightened wire to a cutter for cutting, and comprises a vertical wall plate (5), a driving mechanism (1), multiple upper rollers (2), a front pipe (3), a back pipe (7) and multiple lower rollers (4) fitting the upper rollers (2), wherein the front pipe (3) and the back pipe (7) are arranged on the wall plate (5) at intervals; the wire is leaded into the back pipe (7) by the front pipe (3); the driving mechanism (1) is positioned on the wall plate (5); the multiple upper rollers (2) are mounted on the driving mechanism (1), and are positioned above the wire; the multiple lower rollers (4) are positioned below the wire; the driving mechanism (1) can slide in the vertical direction, so that a wire bundle penetrating between the front pipe (3) and the back pipe (7) can be tightly bonded on the multiple upper rollers (2) and the multiple lower rollers (4); and the driving mechanism (1) can drive the rotate of the upper rollers (2). The wire leading device can stably and quickly transmit the straightened wire into the cutter.

An on-line detection system and detection method for round steel surface defects, belonging to the technical field of metal surface detection, in which two fixed boxes are arranged symmetrically on both sides of the round steel roller table The lower part of the frame is surrounded by a detection channel for the round steel to pass through. A fixed bracket is installed in the fixed box. Multiple industrial camera components are arranged at equal intervals on the two fixed brackets. The imaging ranges of two adjacent industrial camera components overlap or touch each other. , both sides of the detection channel are symmetrically installed with arc-shaped light source components along its circumference. The beneficial effect of the present invention is that the present invention realizes online real-time comprehensive and clear collection of images of the round steel surface, avoiding the situation of shaking in image collection. It effectively avoids the problem of image signal-to-noise ratio reduction, can accurately identify and judge the defects on the surface of the round steel, prevents the problem that the temperature of the round steel is too high and affects the normal collection work, and realizes the automatic online detection of the surface defects of the round steel.

The invention relates to the technical field of building walls, and discloses a building prefabricated light steel structure wall, including a wall frame, the top and bottom ends of the wall frame are fixedly connected with I-beams, and the corresponding inner side of the wall frame is Sliding grooves are provided, and several sliding frame bodies are slidably connected in the sliding grooves. Positioning support mechanisms are fixedly installed on both sides of the top of the sliding frame body. The positioning support mechanism includes a fixed cylinder, a connecting column, a threaded column and a positioning column. The connecting post is slidably connected in the fixing cylinder, the threaded post is fixedly connected to the top middle of the connecting post, and the positioning post is fixedly connected to the top middle of the threaded post. The prefabricated light-weight steel structure wall of the building ensures that the steel structure wall can be replaced with its installed board during use, so that the board can be replaced in time for long-term poor damage, ensuring that the steel structure wall can be used normally. The use cost is reduced, and the installation efficiency of the steel structure wall is higher than that of the traditional steel structure wall.

The invention provides a telescopic glass transport vehicle. The telescopic glass transport vehicle comprises a cross beam, a telescopic supporting rod, suckers and supporting racks; the two ends of the cross beam are connected with two rollers, and the telescopic supporting rod is perpendicular to the cross beam and is positioned at the middle point of the cross beam; a handle is vertically arranged at the top end of the telescopic supporting rod, and a T-shaped fixing rod is arranged on a side surface of the upper end of the telescopic supporting rod; two ends of the T-shaped fixing rod arerespectively connected with fixing columns, and each fixing column is connected with the corresponding sucker. A supporting groove is formed in the lower portion of the telescopic supporting rod and positioned under the T-shaped fixing rod, the cross beam is provided with two clamping grooves, the clamping grooves are positioned on the side which is opposite to the supporting groove, each clampinggroove is positioned between the corresponding roller and the telescopic supporting rod, a rotating shaft is arranged at the end, which is away from the telescopic supporting rod, of each clamping groove, and the supporting racks are fixed on the cross beam through the rotating shafts. According to the telescopic glass transport vehicle, coated glass can be stably adsorbed through the suckers andthe supporting groove, and meanwhile, the length of the telescopic supporting rod can be adjusted to be suitable for glass in different sizes.

The embodiment of the invention discloses a vehicle turning control method, device, vehicle and storage medium. Wherein, the method includes: receiving the current position information of the vehicle captured by the positioning and navigation system and the target waypoint information of the target curve where the vehicle is located, and the current speed information of the vehicle captured by setting the sensor; according to the current Determine the lateral control input information and longitudinal control input information of the vehicle based on position information, target waypoint information and current vehicle speed information; determine the steering wheel angle of the vehicle through model predictive control according to the lateral control input information; The longitudinal control input information determines the driving acceleration of the vehicle through proportional integral differential control; controls the vehicle to turn according to the steering wheel angle and driving acceleration. The technical solution provided by the embodiments of the present invention enables the vehicle to pass through a curve with a large curvature during turning control, thereby improving stability and comfort.

The invention discloses a camera motor and electronic equipment. The camera motor comprises at least two optical image stabilizer coils and at least two metal parts, wherein the optical image stabilizer coils and the metal parts are distributed in the form of a ring-shaped structure; each optical image stabilizer coil and one metal part are oppositely arranged; a connecting line between each optical image stabilizer coil and the opposite metal part is mutually perpendicular and crossed on the center point of the ring-shaped structure; after being electrified, each optical image stabilizer coil can generate acting force with the corresponding metal part.

The invention discloses an implant implanting guider for dental implantation. The implanting guider comprises a spacing baffle, a fixed seat, a lock sleeve and a guide component, wherein the fixed seat is fixed on the spacing baffle; a clamp plate is arranged on the body of the spacing baffle, and is connected with a rotating rod; the lock sleeve is fixed on the fixed seat; a rotary notch is formed in the side end of the lock sleeve; a lock cap is arranged at the top of the lock sleeve; an embedding opening is formed in the lock sleeve; a spacing loop is arranged in the lock sleeve; a rotary buckle is arranged at the top end of the lock sleeve; a threaded sleeve is arranged at the embedding end of the lock cap; and a lock disc is arranged at the bottom end of the lock cap. The implanting guider can be used for spacing an implanting position, accuracy of the implanting position of an implant can be effectively ensured, and the offset problem of the implant position easily caused when adoctor is limited by the point of view and hands tremble can be avoided. The guider is simple in operation and convenient to use, so that the efficiency for implanting an implant can be improved.

The invention discloses a double-derricking cylinder hydraulic control system. The double-derricking cylinder hydraulic control system further comprises a two-position three-way reversing valve, a cartridge valve and a synchronous control device; a port A of a three-position four-way reversing valve communicates with a first working oil port of the cartridge valve; a control oil port of the cartridge valve communicates with a port A of the two-position three-way reversing valve; a port B of the two-position three-way reversing valve communicates with a second working oil port of the cartridge valve; the second working oil port of the cartridge valve communicates with a first oil port of the synchronous control device; a second oil port of the synchronous control device communicates with rodless cavities of a first derricking cylinder and a second derricking cylinder; and rod cavities of the first derricking cylinder and the second derricking cylinder communicate with a port B of the three-position four-way reversing valve. The double-derricking cylinder hydraulic control system realizes the locking function through the two-position three-way reversing valve and the cartridge valve, and prevents shaking of a lifting arm.