61results about How to "Reduced sliding wear" patented technology

The invention provides a method for a laser preparation of a titanium nitride gradient coating on a surface of titanium and titanium alloy. The method comprises the steps of performing surface cleaning treatment, surface blackening treatment and preheating treatment for a workpiece subatrate; and then carrying out laser nitriding treatment. The method is characterized in that the laser nitriding treatment is performed in a condition of filling reaction gas, and simultaneously laser scanning treatment and ultrasonic oscillating treatment for the surface of the workpiece subatrate are carried out. The titanium nitride gradient coating with a thickness of 50-200 [mu]m is obtained on the surface of the titanium and titanium alloy. The titanium nitride gradient coating is mainly composed of a nitride layer and a nitrogen diffusion layer, and has uniform transition of the coating microstructure. The surface hardness, wear resistance and corrosion resistance of the titanium nitride gradient coating are improved significantly than those of the matrix. Also, problems that crack are easy to produce, surface roughness is large, and the crystal grains of dendrite crystals of a nitride layer are coarse, in ordinary laser gas nitriding processes, are solved.

An arrangement of a shift rocker (1), in a transmission housing, comprising a sliding sleeve (2) and a shift rod (3). The shift rocker (1) is mounted to pivot relative to the housing about a pivot axis, can be actuated by the shift rod (3), and engages with an annular groove of the sliding sleeve (2), via sliding blocks (6, 7). The pivot axis of the shift rocker is substantially vertically orientated and the shift rocker (1) has at least one supporting element (9), located outside the vertically orientated pivot axis, which rests on the shift rod (3).

Drain oil is discharged into an oil drain passage from an advance angle port and discharge port, or from a delay angle port and discharge port; the drain oil may be mixed with foreign matter. The flow of such foreign matter accompanying the drain oil, even if flowing toward an electromagnetic actuator, can be hindered from reaching a high magnetic flux density portion by each of a pipe, a hollow shaft, and a collar. The high magnetic flux density portion, which is easy to be affected by influence of the foreign matter, can be prevented from suffering from the arrival of the foreign matter; this prevents an occurrence of the slide abrasion and/or the slide defect of a plunger, improving the reliability of an oil control valve.

The invention provides a method for preparing fine-grain Ti3Al/TiN gradient coatings on titanium and titanium alloy surfaces. The method includes the steps that under the nitrogen atmosphere, laser scanning processing, synchronous in-situ aluminum powder feeding and ultrasonic vibration treatment are simultaneously conducted on the titanium and titanium alloy surfaces of workpiece substrates, so that the fine-grain Ti3Al/TiN gradient coatings are prepared on the titanium and titanium alloy surfaces. The invention further provides a device for preparing the fine-grain Ti3Al/TiN gradient coatings on the titanium and titanium alloy surfaces. The method has the advantages that operation is easy and convenient, locating heating can be achieved, contact processing is avoided, a needed preparation time is short, and the depths of the Ti3Al/TiN gradient coatings are controllable. Compared with the prior art, the prepared fine-grain Ti3Al/TiN gradient coatings have the advantages of being free of air holes and cracks, having low surface roughness, achieving grain refinement, having high hardness and good wear-corrosion resistance, being reduced in surface residual stress and the like.

Three or more attachment pins are arranged on a right lateral surface of a nozzle ring at intervals. All the attachment pins are placed outside support holes in the nozzle ring in radial directions of the nozzle ring. A guide ring is provided across right lateral surfaces of the attachment pins. A first side guide member to support a right lateral surface of a drive ring in away that allows the right lateral surface to be in sliding contact therewith is provided to the right of the guide ring. A second side guide member to support a left lateral surface of the drive ring in a way that allows the left lateral surface to be in sliding contact therewith is provided to the left of the guide ring.

The invention discloses a multi-cylinder rotary compressor. The multi-cylinder rotary compressor comprises a sealing shell, wherein the sealing shell comprises a cylindrical shell and an upper end plate; a motor and a compression mechanism part are accommodated in the sealing shell; and the motor has a stator and a rotor. The compression mechanism part comprises a first compression cavity and a second compression cavity, a middle separation plate having a middle bearing, a first piston and a second piston, a first slide piece and a second slide piece, a crankshaft, and a first sealing plate and a second sealing plate, wherein the crankshaft comprises a first eccentric shaft and a second eccentric shaft, a middle shaft for connecting the eccentric shafts, a secondary shaft connected with the first eccentric shaft and a main shaft connected with the second eccentric shaft and fixed with the rotor; at least one of the first eccentric shaft and the second eccentric shaft and the crankshaft are in a separate combination type; at least the middle shaft slidingly fits a middle bearing; and the main shaft slidingly fits an end plate bearing in the upper end plate. The multi-cylinder rotary compressor improves the reliability of the crankshaft operating with high speed and high load.

A plurality of pairs of contact terminals accommodated in a card edge connector include back surface members having one ends to which lead wires are connected and another ends being folded to form movable members. Until a circuit board of a control unit is inserted, end portions of the movable members are held in conductive contact with each other. When the circuit board is inserted, the movable members are separated and brought into contact with copper foil terminals. When the circuit board is removed, the movable members plastically deform and are opposed to each other with an initial gap smaller than a thickness dimension of the circuit board. With this arrangement, wiring inspection may be performed with opposed movable members shorted to one another, but for subsequent circuit board insertion at the second or subsequent insertion and removal of the circuit board, the movable members will be slightly separated by a gap to suppress slide abrasion during insertion.

The invention discloses a fan assembly of an air-aspiration type planting machine. A fan wheel (26) in a fan (1) is connected with a wheel (10) in a unidirectional automatic clutch device through a ribbed belt (2) in a transmission manner; one end of a negative pressure suction hole (25) in the fan (1) is connected with a negative pressure stabilizer (11), and the other end of the negative pressure suction hole (25) is connected with a planter of the planting machine. By the adoption of the ribbed belt (2), the fan assembly of the air-aspiration type planting machine can change the speed in position at a time; furthermore, the ribbed belt (2) is difficult to slip, so that the transmission efficiency is improved; due to the additional arrangement of the unidirectional automatic clutch device, when a tractor is deaccelerated rapidly during working, the fan can still continuously run under the action of the inert, so that the slip abrasion of the belt is alleviated, and the stability of instant air pressure of the fan is improved; the negative pressure stabilizer (11) is designed in order to realize the stable and high-efficiency planting, so that the fan can be greatly improved during running.

An electrical connector connecting a male connector and a female connector in a freely engageable and detachable manner includes, a male tab is provided at the male connector; a housing part where the male tab is inserted is provided at the female connector; a contact piece and a beat piece to hold and press the male tab to enable electrical connection are provided at the housing part; and a protrusion is provided at least at one of the contact piece and the beat piece, and a recessed part capable of accepting the protrusion is provided at the male tab, wherein the contact piece, the beat piece, and the protrusion are constituted to be one component.

The invention discloses a bearing reducer center wheel shell in the field of machine transmission. The bearing reducer center wheel shell comprises a cylindrical side plate, the upper portion of the inner wall of the side plate stretches inward to form a ring-shaped upper end plate, the lower portion of the outer wall of the side plate stretches outward to form a ring-shaped lower end plate, the top of the upper end plate is provided with a plurality of installation holes in the peripheral direction, the inner side wall of the upper end plate is provided with a plurality of vertical slots evenly formed in the peripheral direction, the tops of the slots are connected with the top of the upper end plate, the bottoms of the slots are connected with the bottom of the upper end plate, the section outline of each slot is in an arc shape, smooth transition is formed between every two adjacent slots, and the section outline of the side wall of the upper end plate is a ring-shaped track in a curtate epicycloid shape. By means of the bearing reducer center wheel shell, a bearing reducer has the advantages of being small in radial load, high in transmission ratio, uniform in load distribution, low in noise, low in abrasion, long in service life and high in carrying capacity.

The invention belongs to the field of automobile transmissions and particularly relates to a manual transmission interlock cage and a manual transmission. The interlock cage is provided with a limiting slot or limiting hole in the top, the limiting slot or limiting hole is elongated, the length direction of the limiting slot or limiting hole is consistent with the axial direction of shifting shaft through holes, the length of the limiting slot or limiting hole is greater than or equal to a selection travel of a shifting head, and a limiting block arranged on a shifting mechanism case and capable of relatively moving in the limiting slot or limiting hole along the length direction of the limiting slot or limiting hole is extended into the limiting slot or limiting hole. The limiting slot or limiting hole and the limiting block have high machining precision and high strength and hardness, a fitting clearance between the limiting slot or limiting hole and a limiting pin is small, and the limiting pin experiences small sliding loss in the limiting slot or limiting hole; therefore, it is ensured that the interlock cage may be kept vertical constantly, and it is avoided that excessive manual shifting force leads to damage of the shifting mechanism case and affects the gear interlocking function.

The invention provides a shoulder joint motion range measuring device. The shoulder joint motion range measuring device comprises a support, a shoulder measuring assembly and a stopping mechanism. The support comprises a stand column extending in the vertical direction. The shoulder measuring assembly comprises a fixed disc installed on the stand column and a movable disc rotatably installed in the fixed disc; the movable disc comprises a shell with an inner cavity, and a shoulder joint movable arm is hinged to the shell; the stopping mechanism is arranged in the inner cavity of the shell and comprises a circular ring structure with a notch, and a stopping layer is arranged on the outer side of the circular ring structure. When the head end and the tail end of the circular ring structure can abut against each other, the whole circular ring structure is subjected to compression force, and the stopping layer is far away from the inner wall of the shell; and when the head end and the tail end of the circular ring structure move separately, the whole circular ring structure is subjected to drawing force, the stopping layer presses the inner wall of the shell, and stopping of the movable disc is achieved. According to the invention, the movable disc is fixed through the stop mechanism, so that distortion of measured data caused by shaking generated when a patient maintains actions does not need to be worried, and measurement errors are effectively reduced.

The invention belongs to the technical field of mechanical cooperation, and particularly relates to a sliding assembly and an air treatment device. The invention aims at solving the problem that the friction force of the sliding assembly with the sliding path being a nonlinear line and a non-large-radian arc line is large. According to the sliding assembly and the air treatment device, the sliding assembly comprises a base, a sliding part and balls, wherein the base is in sliding connection with the sliding part, a first sliding plane on the base and a second sliding plane on the sliding part are oppositely arranged, installing holes corresponding to the balls are formed in the second sliding plane, the balls are installed in the installing holes, the balls abut against the first sliding plane and the sliding part, the balls enable the second sliding plane and the first sliding plane to be spaced to form a clearance space, and the first sliding plane and the second sliding plane are in sliding fit through the balls. The air treatment device comprises the sliding assembly. Through arrangement, the friction force of the sliding assembly of which the sliding path is a non-straight line and a non-large-radian arc line can be reduced, the sliding wear is reduced, and the sliding stability is improved.

A moving apparatus includes a moving member configured to reciprocate along a first direction, a guide configured to contact a sliding portion of the moving member via a lubricant and to guide a movement of the moving member, and a structure configured to restrain the lubricant applied to the guide from being squeezed out of a sliding region of the guide, where the guide contacts the sliding portion, in a second direction orthogonal to the first direction utilizing the movement of the moving member.

The invention discloses a die slanting top split structure stable to discharge and relates to the field of dies. The die slanting top split structure comprises a base; a plurality of slanting top modules are in sliding fit with the interior of a top seat, and the base is connected with the top seat through a pillar; a lifting seat is fixedly connected with the upper end of a telescopic rod of a hydraulic cylinder arranged on the base; and a connecting rod is connected between a hinge joint seat on the lifting seat and the bottom end of a corresponding slanting top module. According to the dieslanting top split structure, the telescopic rod of the hydraulic cylinder is controlled to stretch and contract, under the telescopic motion of the telescopic rod of the hydraulic cylinder, the lifting seat is pulled to lift, so that a plurality of slanting top modules are controlled to lift simultaneously to finish die assembling and demoulding of slanting top die heads at the upper ends of theslanting top modules, and the operation is convenient; lubricating oil flows into corresponding oil taking passages through a plurality of taps to uniformly and effectively lubricate the outer walls of the slanting top modules, so that sliding wear between the slanting top modules and the top seat is reduced, and stability and smoothness during the sliding process of the slanting top modules are ensured.