247 results about "Rolling sliding" patented technology

A leg prosthesis adapted to a thigh stump includes an adapter (2) for a knee joint (3), a knee joint (3) mounted on this adapter, and a prosthetic lower leg (4) coupled to the knee joint (3). A prosthetic foot (5) is attached to this prosthetic lower leg and can pivot into a toes-raised foot position. The knee joint (3) upon transition from the extended position to the bent position performs a combined rolling-sliding movement about a pivot axis (6). A force-transmitting element (8) moves the prosthetic foot (5) substantially from the toes-down foot position to the toes-raised foot position during bending of the knee joint (3). Each bending position of the knee joint is transformed by a converter into an unambiguous electrical signal, which is supplied to a programmable control device, which generates a signal used to control an electrically adjustable actuator, which increases or decreases the resistance of the knee joint against or for further bending according to the signal.

The invention discloses a variable-load rolling friction-abrasion testing machine, belongs to mechanical friction-abrasion testing devices, and relates to the variable-load rolling friction-abrasion testing machine which is controlled by double motors and is capable of changing the load size in real time, controlling the roll-slide ratio and controlling the temperature. In a driving mode of simultaneously driving a transmission assembly through the double motors, the testing machine consists of a rack, the left motor, the right motor, the transmission assembly, a lubricating temperature control assembly, a variable-load loading assembly and a torque detection assembly. In the variable-load loading assembly, a pneumatic generation device is connected with a pressure control valve through a pipe, the pressure control valve is connected with a pneumatic cylinder through a pipe, the pneumatic cylinder is arranged on a motor base plate through a bolt in a vertical direction, and a piston rod is arranged above the pneumatic cylinder and is capable of being finely adjusted up and down. The variable-load rolling friction-abrasion testing machine is simple in structure, accurate in measurement and complete in functionality; parameters such as slippage rate, lubrication, temperature and load can be controlled simultaneously.

The invention relates to an interface friction property monitoring-based rolling-sliding friction life cycle test device. A high-speed electric spindle on a support lifting platform is connected with a torque sensor; one end of the torque sensor is connected with an exchangeable rolling body in a measured object; two ends of the rolling body are provided with rolling bearings; the rolling bearings area arranged in a vertical guide rail; a pressing plate is arranged above the rolling bearings; a groove for accommodating a ball is arranged on the upper surface of the pressing plate; the upper part of the ball contacts with the fulcrum plane of a pressing rod; a lever is arranged on an upright column; the tail end of the lever is connected with the nut of a sensor on a support through a steel wire rope; one end of the support is provided with a low-speed motorized spindle; and the front end of the low-speed motorized spindle is equipped with the bearing inner ring of the measured object. With the test device of the invention adopted, the actual working condition of each roller and a bearing inner ring in the operation process of a cylindrical roller bearing can be simulated; the cause of abrasion caused by the change of interface contact is obtained; and a reliable data guarantee and technical support can be provided for the life cycle health condition monitoring and condition-based repair of the key friction pair of a rolling bearing.

The invention provides a movable medical equipment cleaning device, which belongs to the field of equipment cleaning and includes a box body, a rotating device and a rolling slide; the box body includes a cleaning chamber and a sterilization and drying chamber; the cleaning chamber and the sterilization and drying chamber The cavities are separated by partitions; there is a sliding bar on the upper part of the box; an instrument chamber moving device is provided above the sliding bar; a rotating device is provided below the cleaning chamber; ultrasonic cleaning chambers are provided on both sides of the cleaning chamber Generator; the ultrasonic generator is used to emit ultrasonic waves; the outer wall of the cleaning chamber is provided with a liquid inlet pipe and a waste liquid pipe; the liquid inlet pipe is provided with a liquid inlet valve; the waste liquid pipe is provided with a waste liquid valve The right side of the box body is also provided with a sterilizing and drying cavity; ultraviolet lamps are respectively installed on both sides of the middle of the sterilizing and drying cavity; the present invention is reasonable in design and simple in structure; Units can be moved at any time, increasing reliability.

This invention relates to traction and drive rolling-sliding contact fatigue wear-test machine of elevators, in which, the steel wire rope in the structure of double-groove double-rope semi-circle complement is fixed on a rope groove of a down turnplate, namely, two grooves are opened on the turnplate, a steel wire rope, a bit longer than semi-circle, is winded in each groove, the upper and lower semi-circle ropes are complemented, after that, the rope is fixed in the down turnplate with a clamp, this structure can reduce and avoid the contact vibration between the traction wheel and the rope, the weight amplifies the force by a loaded lever to press the traction wheel to contact with the rope on the down turnplate, the action line of the pressure passes through the center of the two wheels.

The present invention provides a solid stick composition comprising a thermosetting resin and a grease. Optionally, the solid stick composition may comprise a lubricant, a friction modifier, a thermoplastic placticizer or a combination thereof. The solid stick compositions may be used for application between two metal surfaces in sliding and rolling-sliding contact such as steel wheel-rail systems including mass transit and freight systems. A method of reducing energy consumption, or controlling friction between a metal surface and a second metal surface by applying the solid stick composition to one or more than one of the metal surfaces, is also provided.

The present invention provides a modified solid stick composition comprising a thermosetting plasticizer, a resin, a lubricant, a friction modifier, or a combination thereof. The solid stick compositions may be used for application between two metal surfaces in sliding and rolling-sliding contact such as steel wheel-rail systems including mass transit and freight systems. A method of reducing energy consumption, or controlling friction between a metal surface and a second metal surface by applying the solid stick composition to one or more than one of the metal surfaces, is also provided.

The present invention discloses a double-drive rolling-sliding revolving combination part two-axis parallel-connection high-speed precise mainshaft head which comprises an electric mainshaft and two-axis parallel-connection mechanism. The two-axis parallel-connection mechanism is composed of a movable platform and two branch structures which are connected with the movable platform. The electric mainshaft is fixedly connected with the movable platform. Each of two branch structures comprises two moving pairs that are installed in parallel. The two moving pairs are connected with a sliding platform which is respectively connected with one end of each of two connecting rods through two rotary pairs. The other ends of two connecting rods are connected with the movable platform respectively through the rotary pairs. Two rotary pairs of a branch pair in two branch structures are respectively installed with the rotary pair corresponding with the other branch structure in parallel. The mainshaft head of the invention not only has a high speed but also improves the force bearing condition of rotary pair so that the rotary pair has higher guiding stiffness and precision.

The invention discloses an electricity canteen jack base place which has the waterproof function; it includes shell, electric link place, rolling slide bushing, the shell fixing connects with the electric link place. The invention can not because of the water splashes into the electricity canteen jack down place arise electric leakage and short-circuit; the use is much safer.

A three component swiveling and rolling glide device, of which two components comprise the mounting assembly and one is an exchangeable base. The mounting assembly is designed to accept multiple attachment means, such as screws, bolts, nails etc. The glide base is removable by finger pressure only without the need for tools enabling the easy interchangeability of the glide base and the attachment means, as desired. This glide also has a tandem swiveling and rolling capability and will also adapt to a singular rolling function, if required, in deep carpets or whenever the glide is at maximum tilt. The hard base, of my invention, has a unique base design to encourage the swiveling and rolling action of the glide. The soft base can accept different materials for the specific need, such as, felt to protect hardwood or tile flooring or rubber for a non-skid function. This glide is designed to combine all the above functions, allowing it to adapt to multiple furniture styles and numerous uses.

The invention discloses an automatic overpass elevator, relating to an overpass elevator by adopting an H-typed slideway to lead an elevation platform to slide up and down. The invention adopts steel to manufacture two H-typed slideways which are combined in parallel, and a traction machine is arranged on an upper part of the slideways. An elevation platform is manufactured and one end of the elevation platform is used for bearing passengers while the other end is provided with a rolling sliding device which is arranged in the H-typed slideways. Then the elevation platform slides up and down in the H-typed slideways under the driving by the traction machine, traction cables and counterweight, thus achieving the object of elevating the platform and conveying passengers passing the overpass up and down.

The invention specifically discloses an experiment test device and an experiment test method of radial-axial ring rolling. The experiment test device comprises a radial rolling mechanism, an axial rolling mechanism and a machine base, wherein the radial rolling mechanism and the axial rolling mechanism are both movably connected on the machine base; the radial rolling mechanism comprises a home roll device, a core roll device, two sets of detection devices I, two sets of drive devices I; the home roll device and the core roll device are respectively connected with the two sets of detection devices; the two sets of drive devices are respectively used for driving the core roll device and the home roll device; the axial rolling mechanism comprises an upper conical roll and a lower conical roll, an upper conical roll slide block device, three sets of detection devices II, four sets of drive devices II and an axial mechanism rack; the upper conical roll device is arranged on the upper conical roll slide block device; and the upper conical roll device and the lower conical roll device are respectively connected with the axial mechanism. The experiment test device has the following beneficial effects of being compact in structure, complete in function, great in body rigidity, small in deformation and safe and reliable to use and all adopting electric control.

The invention discloses a back-up roll with an adjustable and controlled interference, which comprises a core roll and a roll sleeve arranged outside the core roll. The core roll is provided with a through hole; one or a plurality of groups of electric heating assemblies are arranged in the through hole; the end part of the core roll is provided with a connecting flange and a slip ring for power supply and signal output; when the interference fit stress between the roll sleeve and the core roll is insufficient to meet the rolling requirement, even the roll sleeve and the core roll slide relatively, the core roll is subjected to power-up heating, a roll core generates radial expansion by the electric heating assemblies and the pre-tightening force between the roll sleeve and the core roll is increased; and a roll shape curve of a sleeved roll is regulated by powering up a plurality of groups of electric heating assemblies. The back-up roll disclosed by the invention adopts a sleeving structure. The roll sleeve can be made of a high-strength wear-resistance alloy material and the core roll can ba made of a forged steel (or cast steel) material with low price, so that the manufacturing cost can be greatly reduced. When the roll sleeve is seriously worn, the roll sleeve can be directly replaced and the core coll can be repeatedly used. When the combined back-up roll is used for regulating and controlling the plate crown or the plate shape, the roll shape can be sectionally regulated in an expansion control mode. According to the invention, by expansion of the core roll, the interference fit quantity value of the core roll and the roll sleeve is always maintained, so that the service life of the combined back-up roll can be greatly prolonged.

The invention provides an oil lubricating roll-slide bearing with an elastic roller. The roll-slide bearing consists of an outer ring (1), elastic cylindrical rollers (2), slide blocks (3) and an inner ring (4), wherein the elastic cylindrical roller (2) and the slide block (3) are positioned in a chute between the outer ring (1) and the inner ring (4); the number of the elastic cylindrical rollers (2) equals to that of the slide blocks (3), and the elastic cylindrical rollers (2) and the slide blocks (3) are distributed at intervals; the diameter of the elastic cylindrical roller (2) is morethan the thickness of the slide block (3) in the radial direction of the bearing, and the axial length of the elastic cylindrical roller (2) is less than the length of the slide block (3) in the axial direction of the bearing; the elastic cylindrical roller has a certain pre-compression amount in the diameter direction, trace clearances are reserved between the slide blocks (3) and the inner ring(1) and between the slide blocks (3) and the outer ring (4), and the elastic cylindrical rollers (2) are kept to be contacted with the slide blocks (3). The oil lubricating roll-slide bearing is usedfor reducing the applied stress on the inner and outer rings and the elastic cylindrical roller, has the characteristics of storing and releasing energy and maintaining rolling, and has small abrasion and long service life compared with those of a roll-slide bearing with a corresponding size.

The invention discloses an automatic coin roll counting and conveying mechanism which comprises a fixing frame, at least one drawer-type cash box for storing coin rolls, and a conveying part for conveying the coin rolls. Passage ports are formed in the fixing frame, and the conveying part is mounted on the fixing frame and positioned at the lower ends of the drawer-type cash box. When the drawer-type cash boxes are inserted into the passage ports, inserting plates on a conveying frame enable supporting hooks to be opened, and the coin rolls slide down onto passage gates along supporting plates; the passage gates automatically judge according to front-end signals; when receiving release signals, the passage gates move to the lower end of a passage, the coin rolls fall onto conveying belts and are conveyed onto a coin distributing disc through a conveying-belt conveying mechanism, and the coin distributing disc which rotates directly sends the coin rolls to a coin roll outlet through a counting sensor. The automatic coin roll counting and conveying mechanism has the advantages of high speed, high accuracy and the like and is matched with self-service coin equipment, time for coin fetching and exchanging is reduced greatly, a lot of manpower cost is saved, and the automatic coin roll counting and conveying mechanism is self-service coin equipment which is high in efficiency and automation level.

An oscillator measurement device of open cam including the assemble table, the pivot connected to the open cam in the assemble table, the servo electric machine in the assemble table which the output axis is connected to the open cam. The sliding groove in the assemble table is installed with the sliding pin roll which is fixed with the roller follower. The axes line is parallel with it of the open cam rotating shaft. The sliding groove is set with the spring which provides the press for the pin roll to make the outside of the roller follower compress with the open cam surface; the accelerometer is in the pin roll. The roller follower can change with the radial of the open cam to drive the pin roll slide in the groove, so the accelerometer can probe the acceleration change.

A solid stick composition for use on steel surfaces that are in sliding or rolling-sliding contact. The solid stick composition comprises a vinyl ester resin, for example, from about 20 to about 80 weight percent vinyl ester resin, a solid lubricant, for example from about 0 to about 80 weight percent lubricant, and optionally a friction modifier, for example from about 0 to about 40% weight percent friction modifier, or a combination of a solid lubricant and a friction modifier. The solid stick comprises at least one of the lubricant or the friction modifier. A method of controlling friction between a metal surface and a second metal surface by applying the solid stick composition to one or more than one of the metal surfaces is also disclosed as well as a method of reducing lateral force in a rail system comprising applying the solid stick composition onto a wheel or rail surface.

The invention discloses a multifunctional physical exploration experiment demonstration instrument. The multifunctional physical exploration experiment demonstration instrument includes a segment of vertically arranged arc-shaped guide rail and a segment of horizontally arranged air track, small ball rolling sliding grooves are arranged on the arc-shaped guide rail and the air track, a small ball induction device is also arranged on the horizontal air track, one side of the horizontal air track, which is away from the arc-shaped guide rail, is also provided with a spring hanger, and the demonstration instrument also includes a height gauge arranged at one side of the arc-shaped guide rail and used for measuring the initial height of a small ball and a horizontal calibrated scale arranged at one of the air track and used for measuring horizontal motion distance of the small ball. The multifunctional physical exploration experiment demonstration instrument provided by the invention can restore the condition of a smooth horizontal plane to a large extent and help students to understand the first law of Newton, and at the same time, the demonstration instrument can also explore the law of conservation of mechanical energy and the law of kinetic energy.

The invention relates to a rotor bearing used in a high-speed electric rotary machine. In the rotor bearing, a pair of angular contact ball bearings is nested at the two ends of a radial sliding bearing on the shaft neck of the two ends of a rotor, constant pressure pre-compression is adopted between the two ball bearings, the whole is embedded in a floating bushing; the outside end of the floating bushing is provided with a check ring and a check block for limiting the axial movement and rotation of the floating bushing, ensuring that the whole is in a semifloating state when installed in a bearing seat hole with a certain fit clearance and constructing a semifloating type rolling-sliding bearing. The two ends of the rotor are separately provided with a permanent magnet unloading bearing. When a high-power high-speed electric rotary machine using the rotor bearing of the invention is installed on a vehicle and operates in the rotate speed of more than 60000r/min, the operation of the system can be stable and reliable owning to the combined action of the semifloating rolling-sliding bearing and the permanent magnet unloading bearings.