348 results about "Plain bearing" patented technology

The present invention provides a deep tillage, pulverizing and soil loosening machine, which comprises a front traction device, a connecting mechanism, a rear floating fuel tank, a traveling mechanism and a deep tillage, pulverizing and soil loosening device. The front traction device is connected to the rear floating fuel tank through the connecting mechanism. The traveling mechanism is respectively hinged to both sides of the front traction device and the rear floating device. The deep tillage, pulverizing and soil loosening device is hinged to one side of the rear floating fuel tank. The connecting mechanism includes a front connecting block, a rear connecting block, a spherical plain bearing and a hydraulic cylinder connecting mechanism. The present invention has the advantages of better shock absorption effect, not easy to jam, and convenient for operators to construct.

Hydrodynamic rotor shaft plain bearing for a rotor shaft (8), in particular of a wind turbine, comprising at least one axial bearing (1) with an axial bearing housing (2) and a plurality of axial bearing segments (5) arranged therein, wherein the axial bearing housing (2) is fastened to a carrier (25), wherein the axial bearing housing (2) has a housing body (2a) with a plurality of radial openings (4), wherein an axial bearing segment (5) is inserted into each opening (4), which axial bearing segment can be inserted and removed from the radial outside, and in that two laterally radially projecting fastening flanges (3) are provided on the housing body (2a), which fastening flanges are supported on support cuts (26) projecting from the carrier (25) and are fastened thereto in such a way that all axial bearing segments (5) are freely accessible from the radial outside.

The utility model provides a work fixture for rod end knuckle bearing drilling, which belongs to the technical field of rod end knuckle bearing processing and comprises a horizontally arranged fixture body, a base protruding downwards is arranged in the middle of the bottom surface of the fixture body, and a boss protruding upwards is arranged in the middle of the upper surface of the fixture body. A positioning mandrel is vertically arranged in the middle of the upper surface of the boss, the lower end of the positioning mandrel is vertically inserted into the clamp body, the upper end of the positioning mandrel is located above the boss, a through hole penetrating through the clamp body is vertically formed in the middle of the positioning mandrel, and a bolt is vertically arranged in the through hole and penetrates through the positioning mandrel to be in threaded connection with the clamp body. According to the rod end knuckle bearing drilling fixture, the problem that the rod end knuckle bearing shakes in the drilling process due to the fact that the rod end knuckle bearing cannot be well fixed in the drilling process every time can be solved, so that the percent of pass of finished products machined finally is increased, and the working efficiency is improved.

A height adjustment device includes a lower part, an upper part, and a height adjustment unit including a first spherical plain bearing, a second spherical plain bearing, a third spherical plain bearing, a first lifter, a second lifter, and a third lifter. The height adjustment device is configured to adjust a height of the upper part with respect to the lower part by driving the first lifter, the second lifter, and the third lifter.

The invention discloses a sliding bearing service life prediction method, and relates to the technical field of sliding bearing intelligent monitoring, and the method comprises the steps: an edge calculation node uses a quantum decryption algorithm to decrypt multi-modal time series data, and carries out the fractional order chaotic dynamics analysis, thereby achieving the prediction of the service life of a sliding bearing. Performing phase-space reconstruction on the multi-modal time sequence data, extracting fractal dimensions of phase-space attractors, and fusing chemical and crystal data to a quantum entanglement space by adopting a quantum variational auto-encoder to generate a high-dimensional data set fusing macroscopic and microscopic features; constructing a quantum enhanced life prediction model, performing parameter calibration by adopting quantum Bayesian optimization, and predicting a bearing health index according to the high-dimensional data set; according to the invention, the quantum-enhanced life prediction model is constructed through the quantum variational auto-encoder, and the model parameters are dynamically calibrated in combination with the quantum Bayesian optimization algorithm, so that the accuracy and reliability of bearing life prediction are improved.

The rod end knuckle bearing comprises a rod end body, an inner hole is formed in the rod end body, an inner ring is installed in the inner hole in a matched mode, an annular limiting groove is formed in the outer spherical surface of the inner ring, and a limiting pin used for being matched with the annular limiting groove in a limiting mode so as to limit the swing freedom degree of the inner ring in the designated direction is fixed to the rod end body. The limiting pin is arranged on the rod end body, meanwhile, the annular limiting groove is formed in the outer spherical surface of the inner ring, and therefore the swing freedom degree of the inner ring in the left-right direction can be limited through limiting cooperation of the inner side end of the limiting pin and the annular limiting groove; and the walking stability of the humanoid robot can be effectively improved.

The invention provides a method and a device for testing the wear resistance of a self-lubricating gasket and a method for optimizing the assembly stress of a self-lubricating knuckle bearing. The method for testing the wear resistance of the self-lubricating gasket comprises the following steps: attaching the self-lubricating gasket to the surface of a substrate; a pressure load is applied to the surface of the base body attached with the self-lubricating gasket, the pressure load is determined based on preset pressure stress and the area of the surface of the base body attached with the self-lubricating gasket, and the preset pressure stress is set according to the assembly stress of the self-lubricating knuckle bearing installed on the bearing seat; and carrying out friction test on the self-lubricating gasket after the pressure load is applied, and evaluating the wear resistance of the self-lubricating gasket. According to the method, the stress condition of the self-lubricating gasket in the actual service process after the self-lubricating joint bearing is mounted on the bearing race in an interference manner can be simulated without using a finished bearing, and the influence of the assembly stress of the self-lubricating joint bearing on the wear resistance of the self-lubricating gasket can be accurately evaluated; and guidance is provided for optimization of installation and fixing process parameters and service parameters of the self-lubricating bearing.

The invention relates to the field of aero-engine afterburner tests, and discloses a fan-shaped afterburner inlet flow field simulation device and a control method thereof.The fan-shaped afterburner inlet flow field simulation device comprises a linkage ring, a knuckle bearing, a transmission cylinder and a servo electric cylinder, and the telescopic end of the servo electric cylinder stretches out and draws back in the axial direction of an afterburner and is used for driving the transmission cylinder to rotate through stretching out and drawing back; and the corresponding guide blades are driven by the linkage ring and the rocker arms of the other guide blades to rotate along the rotating shafts of the corresponding guide blades. Through the structural design of the servo electric cylinder and the transmission mechanism, the actual inlet flow field state of the fan-shaped afterburner is simulated, and particularly, the angle of the air inlet guide blade can be synchronously adjusted through continuous change, so that the test environment simulation of the fan-shaped afterburner with different air inlet cosine angles is realized; the fan-shaped afterburner inlet airflow cosine angle distribution is obtained, so that the test environment is closer to the real working environment, and the efficient development of the aero-engine afterburner performance test can be supported.

The invention provides a joint bearing fixing and limiting structure, and aims to overcome the defects caused by a joint bearing and connecting rod fixing and limiting mode in the prior art. The invention relates to the technical field of gas turbines, which is characterized in that a check ring similar to a groove in shape is mounted in a connecting rod clamping groove in a manner of locally grooving a connecting rod, then the check ring is rotated through a process hole in the check ring, so that a protruding part of the check ring is screwed into the lower part of a convex shoulder of the connecting rod, and then the circumferential position of the check ring is fixed through a screw or a pin; therefore, the knuckle bearing is fixed, the axial position of the knuckle bearing is limited, the knuckle bearing is firmly installed in the connecting rod, and therefore the structure can bear large loads and has good stability and reliability.

The cleaning device comprises a machine box and a water tank, a supporting plate is fixedly connected to the interior of the machine box, an installation base is fixedly connected to the top of the supporting plate, a container is installed on the top of the installation base, a net cover is arranged on the side edge of the container, and an electric push rod is arranged on the top of the machine box. The bottom of the electric push rod is fixedly connected with a mounting plate, the bottom of the mounting plate is fixedly connected with a first conveying pipe, the bottom of the first conveying pipe is fixedly connected with a second conveying pipe, the side edge of the second conveying pipe is fixedly connected with sprayers, and the sprayers are distributed on the left side and the right side of the container. The side edge of the first hose is fixedly connected with a second hose, the tail end of the second hose is provided with a first water pump, the bottom of the first water pump is fixedly connected with a first built-in pipe, and the first built-in pipe reaches the interior of the water tank.

The invention relates to the technical field of laser measuring instruments, in particular to a device and method for measuring the thickness of an oil film of a sliding bearing. Comprising a supporting ring fixedly connected to a working table, the supporting ring is in sliding connection with a sliding frame, the supporting ring is rotationally connected with a first threaded rod, the first threaded rod is in threaded connection with the sliding frame, the sliding frame is provided with an optical measuring head, a motor is installed in the working table, an output shaft of the motor is fixedly connected with a rotating shaft, and the rotating shaft is connected with the supporting ring. The supporting ring is provided with a friction frame. According to the invention, friction is generated between the flexible part and the sliding block and the sliding bearing, and the condition that the sliding bearing is influenced by friction force in the actual use process is simulated, so that the phenomenon that the reference of an oil film measurement result is poor as the viscosity and thickness of the oil film of the sliding bearing are changed after the oil film is rubbed in the use process is reduced; diversity and accuracy of sliding bearing oil film thickness measurement are increased.

A slide bearing arrangement includes an inner ring element, an outer ring element, and at least one slide bearing element, which is arranged between the inner ring element and the outer ring element. The slide bearing element includes at least two slide bearing pads, wherein the individual slide bearing pads each have a bearing surface that is cambered, viewed in an axial direction, and wherein an apex of the bearing surface has the largest diameter of the bearing surface.

The present application belongs to the technical field of sliding bearing, especially a tool for cleaning the oil groove of the sliding bearing bushing, aiming at the problem that the oil groove is difficult to clean and not clean enough, the following scheme is proposed, including an oil groove cleaner, a grip sleeve is arranged inside the oil groove cleaner, a first joint plate is connected to one side of the outer wall of the grip sleeve, and a limiting piece is arranged on the top and bottom outer walls of the first joint plate. The present application has the functions of removing and cleaning, can solve the problems of inconvenient on-site cleaning, low cleaning efficiency and poor cleaning effect, has simple tool structure, is convenient to use, can provide reference for other occasions with cleaning needs, has certain use value and popularization significance, and the oil groove cleaner can be inclined at a certain angle under the action of the two limiting pieces during use, conforms to ergonomics, can be more conducive to the operator to clean the waste in the bushing oil groove, and is more labor-saving.

The utility model discloses a radial spherical plain bearing which comprises an inner ring and an outer ring which are matched with each other, and further comprises two neck bushings, each neck bush comprises a sleeve part and a flange part formed at one end of the sleeve part, and the sleeve parts of the two neck bushings are respectively embedded into an inner hole of the inner ring from the two ends of the inner ring in an interference mode. The step surfaces of the flange parts of the two neck bushings are respectively pressed on the end surfaces of the two ends of the inner ring, and pin shaft holes which are axially aligned and are used for mounting a pin shaft in an interference manner are formed in the two sleeve parts. According to the utility model, the two neck bushings are additionally arranged in the inner ring, during installation, the pin shaft is in interference penetrating and sleeving fit with the pin shaft holes in the sleeve parts of the two neck bushings, the sleeve parts of the neck bushings are in interference fit with the inner hole of the inner ring, and the flange parts are arranged at the outer ends of the two sleeve parts; the end faces of the two ends of the inner ring are pressed and limited through the step faces of the flange parts, even for a small-size bearing structure, the axial movement preventing effect can be effectively achieved on the bearing, and the use stability of the bearing is greatly improved.

The invention belongs to the technical field of mariculture net cages, and discloses a high-pressure-water-driven netting cleaning robot net attaching cleaning mechanism which comprises a high-pressure water connector and a water inlet and further comprises a transmission main shaft, a propeller and a cleaning disc structure, and a cavitation jet cleaning structure is fixedly connected into the cleaning disc structure. Through the cooperation of the high-pressure water connector, the transmission main shaft, the sliding bearing and other structures, an efficient and stable high-pressure water transmission system is constructed, through the dynamic sealing structure and design formed by the sliding bearing, the sealing ring and the check ring, high-pressure water is transmitted to the transmission main shaft in a leakage-free mode on the premise that dynamic sealing is guaranteed, and the transmission efficiency is improved. And the water is conveyed to the cleaning disc structure through the hollow cylindrical structure, and then high-energy-density water jet is formed through the cavitation jet cleaning structure, so that concentrated release of water flow energy is guaranteed, the jet can penetrate through netting fiber gaps, various stubborn attached organisms are effectively stripped, and the cleaning effect is improved.

Flap device for an internal combustion engine, with a flow housing (12) which delimits at least one flow channel (14, 16), a flap shaft (18) which is rotatably mounted on the flow housing (12) via at least one sliding bearing element (41, 43, 45), wherein the sliding bearing element (41, 43, 45) is fastened to the flow housing (12) via a press connection between an outer peripheral surface of the sliding bearing element (41, 43, 45) and an inner peripheral surface of an opening formed on the flow housing (12), and at least one flap body (20, 22) which is mounted on the flap shaft (18) and is arranged in the flow channel (14, 16), wherein the flap body (20, 22) can be rotated together with the flap shaft (18) about a longitudinal axis (24) of the flap shaft (18) between different positions, characterized in that a recess (80) is provided on the outer circumferential surface (46) of the sliding bearing element (41) and / or on the inner circumferential surface (31) of the opening (30), wherein, when a hot gas flows through the flow channel (14, 16), the surface pressure between the outer circumferential surface (46) of the sliding bearing element (41) and the inner circumferential surface (31) of the opening (30) provided on the flow housing increases due to the thermal expansion of the sliding bearing element (41) and the thermal expansion of the flow housing (12) in such a way that a section (82) of one circumferential surface (31, 46) penetrates into the recess (80) in the region of the recess (80) provided on the other circumferential surface (31, 46) and is plastically deformed into a projection (84), wherein in the cooled state of the sliding bearing element (41) and the flow housing (12), the sliding bearing element (41) is held in a form-fitting manner in the axial direction by the projection (84) projecting into the recess (80).

The invention discloses a radial and thrust combined sliding bearing for a gear transmission device, and relates to the technical field of bearings. The problems that a common sliding bearing can only bear force in a single direction, radial and thrust bearings need to be arranged at the same time, and light weight and integration of a device are not facilitated are solved. The bearing comprises a bearing body, the bearing body is installed in a bearing box, the bearing body is made of carbon structural steel, a radial positioning piece and an axial positioning piece are arranged between the bearing body and the bearing box, lubricating oil flows to the bearing body through a first channel and flows to a thrust pad through a second channel, and under the action of a rotating gear shaft, the bearing body is driven to rotate. According to the bearing, dynamic pressure liquid friction is established, the effects of radial supporting and axial positioning are achieved, the thrust pads on the two sides of the bearing body can bear axial stress in two directions, radial and thrust bearings do not need to be arranged at the same time, the axial size can be effectively reduced under the condition that the axial space of a gearbox is limited, and integration is better.

The invention provides a parallel hydraulic interconnection damping catamaran which comprises an upper cabin, a hydraulic interconnection suspension and a floating body which are sequentially arranged from top to bottom, and the whole structure is symmetrically distributed in the front view and is trapezoidal in the left view. The hydraulic interconnection suspension forms two side waists of a trapezoid, the upper cabin body is connected with the transverse rocker arm through the hydraulic cylinder set, the front transverse rocker arm is hinged to the longitudinal rocker arm through the radial spherical plain bearing, the longitudinal rocker arm is hinged to the floating body through the radial spherical plain bearing, and the rear transverse rocker arm is directly connected with the floating body. The front hydraulic cylinder set and the rear hydraulic cylinder set stretch out and draw back to achieve pitching motion, the left hydraulic cylinder set and the right hydraulic cylinder set stretch out and draw back alternately to drive the floating bodies on the two sides to move in a staggered mode, heeling of the ship body is achieved, and therefore three-freedom-degree vibration reduction compensation of heaving, pitching and heeling is jointly completed. Through the eight-cylinder interconnected hydraulic loop design and the special connection pair layout, wave multi-degree-of-freedom impact is effectively decoupled, the seakeeping and stability of the ship are remarkably improved, and the device is suitable for special rescue scenes such as shallow water areas and complex channels.

The utility model relates to the technical field of harvesters, and discloses a terrain-imitating gathering harvester which comprises a motor vehicle, a fixing plate is installed at the front end of the motor vehicle, connecting frames are hinged to the two sides of the bottom end of the front side of the fixing plate, and one end of each connecting frame is connected with a turnover plate. The top end of the side, close to the fixing plate, of each overturning plate is provided with two oppositely-arranged telescopic assemblies. By means of the special structure of the protection plate, when the power vehicle advances and the ground needs to rise and fall, the trapezoidal inclined face effect of the protection plate can be utilized to form guidance, the front end of the whole overturning plate can adapt to the terrain to generate upward lifting, and by means of the telescopic elasticity of the telescopic assembly and the effect of the knuckle bearing, the front end of the whole overturning plate can be effectively protected. The front end of the turnover plate is tilted and can move leftwards and rightwards to a certain extent according to terrain characteristics, so that the overall forward movement of the front end of the turnover plate is not influenced, and the terrain adaptability effect is achieved.

A plain bearing arrangement (14), in particular for an aircraft engine, including a first component (10) and a second component (12), the first component (10) being slidingly mounted on the second component (12), and the first and / or second component (10, 12) having at least one tribological coating (18), the coating (18) being a single-layer amorphous carbon coating having an sp2 content and an sp3 content, the sp3 content being between 50 at. % and 75 at. %, based on the total amount of substance of the coating (18). An aircraft engine having such a plain bearing arrangement (14) is also provided.

Disclosed is a rotor blade bearing arrangement (214) for an underwater turbine (1), wherein the rotor blade bearing arrangement (214) is designed to rotatably support a rotor blade shaft (204) in a rotor hub housing (202), wherein the rotor blade shaft (204) has a seaward end (207) designed to be connected in a rotationally fixed manner to a rotor blade (4), and a rotor hub-side end (208) designed to be received by a rotor hub (2), and wherein the rotor blade bearing arrangement (214) has the rotor blade shaft (204) and a first seaward bearing unit (220) and a second rotor hub-side bearing unit (230), wherein the first and the second bearing units (220; 230) are arranged at a distance W from one another, wherein the first and the second bearing units (220; 230) are designed as plain bearings (225; 235), each having an inner Sliding surface (282; 292) and an outer sliding surface (281;291), wherein the inner sliding surface (292) of the first sliding bearing (225) is formed on the seaward end (207) of the rotor blade shaft (204) and the inner sliding surface (282) of the second sliding bearing (235) is formed on the rotor hub-side end (208) of the rotor blade shaft (204), and wherein the outer sliding surfaces (281; 291) of the first and second sliding bearings (225; 235) are formed by a rotor hub housing section (252; 262), wherein the rotor hub housing section (252; 262) is formed in a hollow tube shape and has a seaward end (255), on which the sliding layer (291) for the first sliding bearing (225) is formed, and a rotor hub-side end (254), on which the sliding layer (281) for the second sliding bearing (235) is formed, has.;

The invention discloses a multipurpose testing device and method suitable for medium and large-size centripetal spherical plain bearings. The device is mainly composed of a base, a test bearing device, an axial loading assembly and a radial loading assembly, wherein the test bearing device, the axial loading assembly and the radial loading assembly are installed on the base. Wherein the test bearing device integrates a test base, a transmission rotating shaft, a front-middle-rear three-section type supporting assembly, a to-be-tested bearing assembly, a torque sensor and a wear loss measuring assembly; the axial loading assembly and the radial loading assembly can operate independently and can also work cooperatively, and the combined load can be applied to the bearing accurately. The device has the basic advantages of being stable in structure and high in bearing capacity, can simulate complex combined load working conditions, achieves multi-parameter real-time monitoring, can be adapted to tests of medium and large radial spherical plain bearings of various specifications, and is of great significance in promoting research and development and performance verification of high-end spherical plain bearings.

The invention belongs to the technical field of equipment evaluation, and discloses a sliding bearing dynamic characteristic coefficient calculation method and system, and the method comprises the steps: taking a half of a real oil film model at an axial symmetry plane as a research object, setting the side surfaces, located at the axial symmetry position, of a film and an oil inlet as symmetry planes, computing resources can be remarkably saved, and the computing speed is increased; the thin film and the oil inlet are divided into grids independently, and the outer wall surface of the thin film and the bottom surface of the oil inlet are set as grid interfaces, so that automatic grid division can be realized while the grid quality is ensured; according to the method, small displacement and speed disturbance is applied to the journal at the balance position in Fluent software by means of the UDF, calculation of the dynamic characteristic coefficient of the sliding bearing is achieved, and the calculation precision is effectively improved.

The invention relates to an operating device for a hob as an electrical appliance, the operating device having an operating element and an operating surface, wherein the operating element is held on the operating surface by means of magnetic force and is movable thereon and is removably positionable. The operating element has an operating element base and an operating element cap arranged on the operating element base and covering said operating element base at the top. The operating element cap is connected to the operating element base and can be rotated relative thereto about a vertical axis of rotation. A plain bearing is arranged between the operating element base and the operating element cap for smooth rotation of the two parts relative to one another. The plain bearing has sliding surfaces extending obliquely at an angle of between 60° and 35° to the axis of rotation.

A scroll compressor is provided. The scroll compressor can comprise a housing, a drive motor, a stationary scroll, a rotating scroll, a rotating shaft, and a plain bearing. An anti-tilt section can be formed on the inner circumferential surface of the plain bearing to prevent contact with the rotating shaft. Accordingly, the outer diameter of the rotating shaft is enlarged to match the outer diameter of the plain bearing, thus reducing the surface pressure between the rotating shaft and the stationary scroll while maintaining the compression length. Furthermore, tilting of the plain bearing along with the rotating shaft can be prevented, thereby reducing the frictional loss between the plain bearing and the stationary scroll.

The invention relates to the technical field of scrubbers, in particular to a high-stability scrubber which comprises a frame, a swing base plate is hinged to the tail of the frame through a pin shaft A, a water absorption raking module is arranged at the end, away from the frame, of the swing base plate, and a centripetal joint bearing is arranged in the middle of the swing base plate; a lifting sliding rod is arranged in the radial spherical plain bearing in a lifting mode, a limiting head is arranged at one end of the lifting sliding rod, the side wall of the lifting sliding rod is sleeved with a first spring, one end of the first spring is fixedly connected with the side wall of the lifting sliding rod, and the other end of the first spring abuts against the top face of the radial spherical plain bearing. The frame is provided with a swing assembly used for driving the lifting sliding rod to move. The floor scrubber has the effects of stabilizing the pressure of the water absorption scraper and improving the water absorption effect of the floor scrubber.

The invention is suitable for the field of sliding bearing defect detection, and provides an automatic sliding bearing surface defect detection device and method.The automatic sliding bearing surface defect detection device comprises a detection table, a belt conveyor is arranged in the middle of the detection table, and two guide plates are arranged at one end of the detection table; the two guide plates are oppositely arranged on the two sides of the belt conveyor. The upper end face of the detection table is fixedly connected with a fixing frame, the fixing frame is connected with a guide mechanism and a dust removal mechanism, the guide mechanism can guide the sliding bearing, and the guide mechanism is connected with an impurity removal mechanism. A processing module in the regulation and control system can carry out data analysis according to the movement track and the movement speed of the sliding bearing before detection and the vibration condition of the external environment, and control information is generated; the control module can control and adjust the driving mechanism and the lighting assembly according to the control information.

The invention relates to a bearing with a damping arrangement and a The invention relates to a plain bearing for a tracking system for solar panels and a tracking system for solar panels.

The invention relates to a sliding bearing used in rotating machines such as pumps and turbines, in particular to a sliding bearing used in an ultra-low temperature environment. A sliding bearing is provided with: a sliding contact pad (1) having a shaft support surface (1a) for supporting the outer peripheral surface of a rotating shaft (100); a housing (2) disposed on the outside in the radial direction of the sliding contact pad (1); and a pad pressing mechanism (3) that presses the sliding contact pad (1) against the pad support surface (2a) of the housing (2) when the sliding contact pad (1) is contracted.