19 results about "Gear wear" patented technology

The application discloses a drive system fault analysis method and system based on motor current ripple, and relates to the field of electric bicycle drive state monitoring. The method comprises the following steps: collecting motor stator current signals, rotating speed, electric angle and environmental working condition parameters synchronously, removing noise interference by combining adaptive filtering technology, and extracting target ripple signals carrying load information; based on the physical parameters of the motor and the structure of the drive system, a dynamic coupling model is constructed to generate theoretical reference ripple signals under normal and multiple fault states; by comparing the measured ripple signals with the reference signals, system deviation information is obtained, and a composite fault feature vector is further extracted; finally, the feature vector is mapped to a fault mode library to accurately identify fault types such as gear wear, chain slack or bearing defects. Thus, through real-time analysis of the motor current ripple, the health monitoring capability of the electric bicycle drive system and the driving safety are effectively improved.

This utility model provides a car tailgate rotating motor, including a drive motor body. One end of the drive motor body has a circumferential array of mounting screw holes. A reduction gear assembly is mounted on one end of the drive motor body, and a rear end cover assembly is mounted on the other end. The reduction gear assembly includes a reduction gearbox, which is mounted on one end of the drive motor body. A cavity partition is fixedly connected to the inner wall of the reduction gearbox. The inner cavity of the reduction gearbox is divided into a transmission cavity and an oil storage cavity by the cavity partition. An input shaft sleeve is fixedly connected to the center of the oil storage cavity. Lubrication tubes are arranged circumferentially inside the oil storage cavity, and an oil-collecting cotton core is fixedly connected inside each lubrication tube. Oil replenishment holes are opened on the circumferential surface of the lubrication tubes. The mutual cooperation of the drive motor body, mounting screw holes, reduction gear assembly, rear end cover assembly, and electronic control cover assembly ensures that the device avoids the situation where gears cannot be lubricated, leading to severe gear wear and reduced transmission efficiency during use.

This invention provides a high-precision gear transmission backlash elimination mechanism, comprising a fixed gear and a movable gear. The fixed gear is integrally machined onto the gear shaft, and a raised arc-shaped pad is provided on its end face near the movable gear. The movable gear is coaxial with the fixed gear and has the same tooth profile. A coaxial arc-shaped groove is provided on the movable gear at a corresponding position to the arc-shaped pad. A wedge block is inserted between the arc-shaped groove and the arc-shaped pad, causing an angular offset between the movable gear and the fixed gear. An adjusting screw mounting hole is provided on the end face of the movable gear near the arc-shaped groove adjacent to the wedge block. Screwing in the adjusting screw presses the wedge block in, eliminating backlash while preventing the wedge block from loosening. As the gear wears down over time, increasing backlash, it can be eliminated by screwing in the adjusting screw. The gear transmission system using this backlash elimination mechanism has no significant change in size and features high speed resistance, heavy impact load resistance, and high precision.

This utility model belongs to the field of gear pump technology, and particularly relates to a high-viscosity dispensing gear pump, comprising: a pump body, on which an oil chamber, an oil inlet channel, and an oil outlet channel are provided, the oil inlet channel, the oil chamber, and the oil outlet channel being sequentially connected; a conveying gear set, the conveying gear set including a main gear and a secondary gear, the main gear and the secondary gear being rotatably disposed in the oil chamber and meshing with each other; a pump cover, the pump cover being connected to the pump body by fasteners for sealing the oil chamber; and several flow dividers, disposed in the oil chamber and located between the conveying gear set and the oil inlet channel. The beneficial effect of this utility model is that after the high-viscosity liquid is squeezed into the suction chamber under high pressure, it will come into contact with the flow dividers, and the flow dividers will cut and divide the high-viscosity liquid, reducing the impact force of the fluid, thereby reducing the pressure on the gears, reducing gear wear, and effectively extending the service life of the gear pump.

This invention discloses a tethered UAV winch torque motor constant-direction drive winding and unwinding system and method. The system consists of five core modules: a constant-direction drive mechanism powered by a clockwise rotating torque motor; a gear reversing transmission mechanism that transmits power through multi-stage gears; a one-way clutch mechanism that controls power on / off using a one-way bearing; a reversing actuator that uses a servo motor to drive a gear swing arm, which in turn drives the swing arm gear to switch between different meshing positions; and a dual-mode control mechanism that supports manual and automatic dual-mode output control signals to drive the servo motor and complete the switching between winding and unwinding conditions. In the winding condition, the swing arm gear directly drives the winding drum to wind the line, and the winding tension can be directly adjusted by the torque output of the torque motor. In the unwinding condition, the power end idles, and the winding drum is passively unwinded by the UAV, with no reverse mechanical energy feedback to the motor. This solves the technical problems of reverse energy burning out the driver, cable failure caused by mismatched unwinding speed, and gear wear during switching between conditions in traditional solutions.

This invention provides a multi-stage reduction gearbox with a flexible shaft and an adaptive zero-backlash gearbox, and its backlash elimination assembly method. The gearbox includes a housing and a multi-stage gear transmission mechanism, and also includes a backlash elimination mechanism. The backlash elimination mechanism includes a backlash elimination gear set meshing with each stage of the gear pair, a flexible shaft, and a locking mechanism, forming a parallel backlash elimination transmission branch. During assembly, a reverse preload is applied to the backlash elimination gear set to cause the flexible shaft to twist and deform, and then the locking mechanism locks it to maintain an elastic preload state. This invention uses a single backlash elimination mechanism to simultaneously eliminate backlash in multiple stages, simplifying assembly; it utilizes the elastic restoring torque of the flexible shaft instead of rigid fixing, providing impact resistance and reliable operation; it can adaptively compensate for backlash after gear wear, achieving zero-backlash transmission throughout its lifespan; it reduces the requirements for bearing precision and significantly reduces manufacturing costs.

This invention discloses a gear transmission adjustment mechanism, including a fixed gear, a movable gear, and a mounting base plate. The fixed gear is locked onto the gear shaft and fixed to the mounting base plate by a large nut. The movable gear is mounted on a sliding bearing and a slider, which can move along a positioning block. An adjusting bolt is provided on the mounting base plate; rotating the adjusting bolt drives the slider to move the movable gear along the line connecting the centers of the two gears, thereby adjusting the meshing clearance and locking it in place. This invention can precisely adjust the gear meshing clearance to the optimal range, reducing the requirements for machining and assembly precision. It can also perform secondary calibration of the clearance after gear wear, eliminate transmission whistling and knocking noises, improve the NVH performance of the transmission system, and extend the service life of components.

This invention discloses an external meshing high wear-resistant melt gear pump, comprising a pump body. The pump body houses a driving gear, a driven gear, and sliding bearings. The driving gear and the driven gear are integrally formed with the driving shaft, and the sliding bearings are disposed on both sides of the driving and driven gears. A driving helical gear is mounted on the driving shaft, and a driven helical gear is mounted on the driven shaft. The driving and driven helical gears are located in a first bearing housing at one end of the pump body, and a second bearing housing is located at the other end of the pump body. Meshing adjustment mechanisms are provided between the driving helical gear and the driving shaft, and between the driven helical gear and the driven shaft, both located within the first bearing housing. An axial adjustment mechanism for the rotating shaft is provided on the driving and driven shafts, located within the second bearing housing. This invention can reduce gear wear, improve pumping accuracy, and achieve low and stable operation with low noise.

The utility model discloses a kind of self-adapting support devices for injection molding machine electric pre-plastic device, including injection station backplate, injection station backplate is connected with reduction gearbox, reduction gearbox is fixedly connected with motor, the below of injection station backplate is fixed with injection line rail slider, pressure sensor is equipped between injection line rail slider and injection station backplate, injection line rail slider is slidably arranged on injection line rail, injection line rail is fixedly connected with line rail support, the side surface of support device is installed on line rail support, its top surface is fixedly connected with reduction gearbox and motor;The relative position of upper adjusting block and lower adjusting block is adjusted to adjust the support height of reduction gearbox and motor, it is helpful to prolong the service life of slider and adjust conveniently, support device is installed on line rail support, support seat length only needs to be greater than injection stroke, part length is smaller, the problem that overturning moment increases and gear wears in rotation caused by the structure of electric pre-plastic device that reduction gearbox and motor are formed is improved, prolongs the service life of reduction gearbox long.

The utility model relates to the technical field of tractor, concretely relates to a tractor gearbox, both sides of gearbox are fixedly connected with side frame, the inside of two side frames is equipped with connecting plate, and the top of two connecting plates is respectively with the bottom between the inside top and bottom of two side frames sliding connection, one side of two connecting plates is fixedly connected with sliding block, and two sliding blocks are through sliding groove and are between one side of two side frames sliding connection respectively, one side of two sliding blocks is fixedly connected with mounting plate. The problem that it is difficult to carry out longitudinal fine adjustment under the traditional rigid fixed mode is solved, the gearbox can slide on the bottom plate along the front and back directions, thereby effectively compensating the axial misplacement caused by manufacturing errors or installation deviation in the assembly process, the centering accuracy of the input and output shafts is improved, and the risk of faults such as vibration, abnormal sound and gear wear caused by poor coaxiality is reduced.

The application discloses a precision planetary reducer return gap detection device and belongs to the technical field of planetary reducer detection, which comprises a machine body, a correction component is arranged above the machine body, the correction component comprises a first guide pipe fixedly connected to the upper side of a positioning seat, and a first fixing ring is fixedly connected in the positioning seat, a plurality of first conveying pipes fixed by a second fixing ring are arranged to guide lubricant into the planetary reducer body, the lubricant enters the planetary reducer body from different directions, during the detection process, the electronic valve is kept in an open state and continuously provides lubricant dynamic oil film compensation to the planetary reducer body, the gear meshing state is stable during the whole detection process, "non-structural microscopic gaps" are avoided from being generated again due to gear slight movement, gear wear and gear surface temperature rise during the detection process, and the detection precision of the torque sensor is ensured.

This utility model discloses a gear wear testing machine, including a testing body positioned at the center of a support. The testing body includes a turntable driven by a drive unit, and the rotation plane of the turntable is a vertical plane. The support has first guide rods symmetrically arranged at both ends of the turntable, with the rotation axis of the first guide rods parallel to the rotation axis of the turntable. The first guide rods are also rotatably connected to second guide rods, with the rotation axis of the second guide rods horizontally and perpendicular to the first guide rods. The end of the second guide rod extends beyond the upper surface of the support. A placement body is rotatably mounted on the turntable, with hanging ropes at both ends. The other end of the hanging ropes passes sequentially around the first and second guide rods and connects to a counterweight. Test parameters can be changed simply by replacing the counterweight as needed. Furthermore, the presence of the guide rods facilitates placing the counterweight in an easily replaceable position, and the winding of the hanging ropes prevents the counterweight from wobbling.

The utility model relates to gear frame technical field especially relates to a gear frame of self -adaptation regulation interval. It includes fixed disc, is set up with several removal grooves on the fixed disc, each removal groove is movably provided with the adjusting assembly, the back of fixed disc is provided with oil injection pipe, the back of oil injection pipe is provided with transmission shaft. The utility model through hydraulic system flexible adjustment adjusting block interval, quick adaptation multiple different size, modulus gear installation demand, enterprise need not for each kind of gear specification individually custom -made gear frame, significantly reduce equipment procurement cost and warehousing pressure, especially suitable for small batch, flexible production scene of many varieties. The utility model through modularization design and hydraulic drive, can quick repair or re -adjust, greatly reduce the frequency of replacement, simultaneously, the accurate interval control reduces the gear wear, prolongs the service life of gear and gear frame, significantly reduces the equipment whole life cycle maintenance cost.

This invention discloses a chuck-body three-hole boring composite machine tool, belonging to the technical field of machining equipment. The machine tool includes a clamping mechanism, a feed mechanism, and a boring mechanism. In the boring mechanism, a motor-driven drive gear meshes with three driven gears to achieve synchronous boring of three holes. To solve the problems of inability to monitor gear wear online and inability to adjust lubrication as needed, this invention adds an intelligent system: a high-frequency vibration sensor is installed in the boring spindle box, an abrasive sensor is installed in the oil return line, an oil quality sensor is installed in the cooling tank, and a speed sensor is installed at the end of the driven shaft; an edge decision module fuses multi-source signals to construct a gear wear feature vector and establish a three-axis independent wear trend model; an adaptive lubrication execution module implements differentiated and precise jet lubrication for each meshing surface. This invention achieves online monitoring and early warning of gear wear, extends gear life, and improves machine tool reliability.

This invention provides a vehicle power mode switching method, device, vehicle, and storage medium, relating to the vehicle field, to achieve smooth, step-by-step switching between non-adjacent power modes of the shift hub, avoiding synchronizer gear wear and power shock caused by direct abrupt switching. The method includes: determining the target rotation angle of the shift hub corresponding to the target power mode; determining the angle difference between the target power mode and the current power mode based on the current rotation angle and the target rotation angle of the shift hub; if the absolute value of the angle difference is greater than a second angle difference (which is greater than a preset angle difference between adjacent modes), controlling the shift hub to gradually switch from the current rotation angle to the rotation angle corresponding to each power mode in the target power mode sequence until the target rotation angle is reached; the target power mode sequence is a sequence formed by arranging all power modes involved in the path from the current power mode to the target power mode in order of rotation direction.

The utility model belongs to gear wear detection technical field, concretely relates to a motor shaft gear wear detection instrument, including ferrograph main part, the ferrograph main part side is equipped with and places the groove, the groove top surface is assembled with the drainage tube, a plurality of joints are fixedly connected on the drainage tube side wall, the drainage tube side wall is all installed with the valve at joint junction, the ferrograph main part side is located and places the groove downside and is equipped with the storage groove, the storage groove is slidably connected with the movable plate, the movable plate front and back side wall is provided with the positioning assembly, the movable plate top surface is close to the right side and is provided with the support assembly, the movable plate top surface is fixedly connected with at least two rubber pads. The utility model can connect a plurality of lubricating oil containers simultaneously, and enlarge the placing area of container, make things convenient for the detection to different model lubricating oil to the practicality of promoting thereby.

This utility model discloses a printing roller driving device, including a large support frame, a movable frame connected to the large support frame via a linear slide rail, a motor mounted on the movable frame, the motor connected to the printing roller connector, and a piston rod of a cylinder connected to the bottom of the movable frame, the cylinder being fixed to the large support frame. This utility model features a reasonable and ingenious structural design. The cylinder pushes the movable frame, allowing the printing roller connector to adapt to the connection of printing rollers of different lengths. The motor directly drives the printing roller connector, with independent speed control, resulting in faster response and eliminating errors caused by gear wear, thus ensuring the accuracy of printing roller printing.