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15423results about How to "Avoid wear and tear" patented technology

Coiled tubing clamping device and injection head using same

A coiled tubing clamping mechanism comprises a saddle-shaped clamping block (1) and a clamping block seat (4). The saddle-shaped clamping block (1) is connected to the clamping block seat (4). Two sides of the saddle-shaped clamping block (1) are provided with a tongue platform (102). The tongue platform (102) is provided with an open hole (103). The back of the saddle-shaped clamping block (1) is provided with a groove (104). Two sides of the clamping block seat (4) are provided with a pair of bosses (406) respectively. The groove (104) of the saddle-shaped clamping block (1) is inserted in a holding slot (405) formed by the bosses (406) of the clamping block seat. A traverse gap is kept between the groove (104) and the holding slot (405). The clamping block seat (4) is provided with a positioning screw (2) for limiting the position of the saddle-shaped clamping block (1). Also disclosed is an injector head using the coiled tubing clamping mechanism, comprising a tubing clamping mechanism (11) and a drive chain (13). The tubing clamping mechanism (11) is mounted on the drive chain (13) through two pin holes (401) in the clamping block seat (4). The present invention can effectively prevent the tubing from being worn, is reliable in use, and makes it convenient to replace the clamping block.
Owner:YANTAI JEREH OILFIELD SERVICES GROUP +1

Coiled tubing clamping device and injection head using same

The invention provides a coiled tubing clamping device and an injection head using the same, belonging to the field of oil production and drilling equipment. The clamping device includes a saddle-type clamping block and a clamping block seat, wherein the saddle-type clamping block is connected to the clamping block seat. The clamping device is characterized in that two sides of the saddle-type clamping block are provided with tongue-like platforms, the tongue-like platform is provided with an opening hole, the back part of the saddle-type clamping block is provided with a recess, two sides of the clamping block seat are respectively provided with a pair of bosses, the recess of the saddle-type clamping block is inserted into a slot formed by the clamping block seat bosses, a running clearance is left between the recess and the slot, and the clamping block seat is provided with a positioning screw for limiting the position of the saddle-type clamping block. The injection head comprises an oil pipe clamping mechanism and a transmission chain, wherein the oil pipe clamping mechanism is mounted on the transmission chain through two hinge pin holes on the clamping block seat. The technical proposal has the advantages that the abrasion of the oil pipe can be effectively reduced, the clamping device has operational reliability, and the clamping blocks are convenient in replacement.
Owner:YANTAI JEREH OILFIELD SERVICES GROUP +1

Method for preparing bimetal composite plate by stirring friction braze welding

The invention discloses a method for preparing a bimetal composite plate by stirring friction braze welding. The method comprises that: a plate with small hardness is used as a covering layer metal plate; a plate with high hardness is used as a base layer metal plate; the covering layer metal plate and the base layer metal plate are horizontally fixed on a working platform surface in a lap joint mode; solders which can generate eutectic reaction with one of the upper/base layer metal plates are preset between the upper/base layer metal plates; a non-needle type cylinder friction device is arranged over the covering layer metal plate; the non-needle type cylindrical friction device is made to rotate and be pressed to be closely contacted with the surface layer of the covering layer metal plate, but not penetrate the covering layer metal plate, and the non-needle type cylindrical friction device rotates in the original position or moves forward along the surface of the covering layer metal plate while rotating; by utilizing frictional heat to melt the solders, the upper/base layer metal plates are both quickly melted in the solders, thereby achieving excellent interface combination; and the excessive solders are squeezed out, and a thin and dense soldering seam is formed, so that the bimetal composite plate is prepared. Compared with the braze welding in a furnace, the method has the advantages of high efficiency, energy conservation, pressure lead-in, unnecessary soldering flux and gas protection and short holding time at a high temperature.
Owner:XI AN JIAOTONG UNIV

Self-cleaning device of full-automatic washing machine

The invention provides a self-cleaning device of a full-automatic washing machine, which is used for solving the problem of secondary contamination on clothes caused by clustered dirt in the interlayer between the water storage tank and the dehydration tank, and in the interlayer between the dehydration tank bottom and the impeller bottom of the washing machine. The interlayer between the water storage tank and the dehydration tank is provided with a plurality of clean balls 3, and a plurality of clean balls 5 are arranged between the dehydration tank bottom and the impeller bottom. When the washing machine washes or rinses, the clean balls perform friction with the water storage tank wall, the dehydration tank wall, the impeller bottom and the dehydration tank bottom to clean the dirt inthe positions, and simultaneously the clean balls are self cleaned through mutual collision and friction. By adopting the way in which the water storage tank rotates along with the dehydration tank when dehydrating and the storage tank wall or bottom is provided with a groove or a piston cylinder (to lead the clean balls to drop into the groove or the piston cylinder when dehydrating), the clean balls do not generate friction with the dehydration tank, thus prolonging the service life of the clean balls and saving energy; and the adoption of the way in which the water storage tank rotates along with the dehydration tank when dehydrating can decrease the width of the interlayer between the water storage tank and the dehydration tank to save water.
Owner:任文涛

Twisting or micro-moving frictional wear test method and device thereof

The invention relates to a torsional fretting friction wear test method, the method is that: an upper testing part is clamped in an upper clamp, a lower clamp is fixed with a high-precision low-speed rotation table by a thread, a vertical central line of a holding cavity of the lower clamp is aligned with a rotating shaft of the high-precision low-speed rotation table, a spherical lower testing part is clamped by the lower clamp; the upper clamp is controlled for up and down movements by a data collection control system, the upper and lower testing parts are contacted and are exerted by a set load, at the same time, the lower clamp and the lower testing part clamped by the lower clamp are controlled by the data collection control system to carry out a plurality of times of reciprocating rotations by a set rotation speed and a rotation angle; at the same time, the friction torque is measured by a six-dimension force/torque sensor which is connected with the upper clamp and is sent to the data collection control system, and a torque-angular displacement curve under the set rotation speed and the load conditions can be obtained by analysis. The method can conveniently allow the materials to generate the small angle torsional fretting friction wear, the degree of the automation is high, the precision of the control and the test is high and the reproducibility of the test data is good.
Owner:SOUTHWEST JIAOTONG UNIV
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