39results about How to "Increase the effective bearing area" patented technology

The invention discloses a magnetic fluid dual-suspension guide rail system. A liquid static-pressure and electromagnetic suspension bearing system consists of a static guide rail, static-pressure guide plates, an electromagnet, a permanent magnet, wherein the static-pressure guide plates are of a closed structure and are arranged at the periphery of the static guide rail; a rectangular-ambulatory-plane oil cavity is distributed in the static-pressure guide plate in a vertical direction; a middle entity part of the oil cavity is hollowed and is provided with a groove in which the electromagnet is arranged; the static-pressure guide plates on two sides are of a planar structure; an oil way and an electromagnet cable joint are uniformly distributed on the side static-pressure guide plates; the permanent magnet is distributed in the static guide rail, and the position and direction of the permanent magnet are matched with those of the electromagnet. According to the magnetic fluid dual-suspension guide rail system, oil films are formed between the static-pressure guide plates and the static guide rail, so that the two guide rails are separated, coarse adjustment on the guide rail rigidity is realized, the electromagnet is electrified to generate electromagnetic suspension bearing, and thus fine adjustment on the guide rail rigidity is realized. Compared with the prior art, the magnetic fluid dual-suspension guide rail system has the advantages that the bearing capacity and static rigidity of the guide rail system is increased, and the processing accuracy and the stability are improved.

The invention discloses a high-supported formwork. The high-supported formwork comprises vertical plates, a horizontal rod and casing pipes, wherein the vertical plates are rectangular plates, a plurality of first fixing holes are uniformly distributed in the two faces of the vertical plates, first through holes extending in the longitudinal direction of the vertical plates are formed inside the vertical plates, the horizontal rod is horizontally arranged between the vertical plates in the mode of being perpendicular to the vertical plates, side wings are arranged on the two edges of the horizontal rod, the side wings, the side wings include upper side wings and lower side wings which are parallel to the upper side wings and are arranged below the upper side wings, second fixing holes are formed in the lower side wings, and U-shaped supporting pieces are arranged between the second fixing holes and the upper side wings; butt-joint pipes are arranged at the two ends of the horizontal rod and matched with the first fixing holes; the casing pipes are perpendicularly arranged at the lower end of the horizontal rod and located between the vertical plates; the casing pipes include an outer casing pipe and an inner casing pipe attached to the inner wall of the outer casing pipe, and a supporting block is arranged at the lower end of the outer casing pipe; a first positioning hole is formed in the outer casing pipe, and a plurality of second positioning holes matched with the first positioning hole are formed in the inner casing pipe. The high-supported formwork is good in stability, high in bearing capacity and high in safety.

A method for synchronously realizing friction stir spot welding-brazing-diffusion welding of aluminum and magnesium dissimilar materials. Both sides of the blank are respectively in contact with the aluminum plate and the magnesium plate. Friction stir spot welding is performed on the fixed overlapping structure. During the welding process, on the one hand, the friction stir spot welding of the aluminum plate and the magnesium plate is realized through the action of the stirring pin on the stirring head and the plate below; Under the action of heat generated by shaft shoulder friction and forging pressure, the temperature in the area close to the stirring pin is high, the brazing sheet melts, and a brazed connection is formed between the aluminum plate and the magnesium plate; Under the action of heat, atomic diffusion occurs between aluminum plate / solder sheet and magnesium plate / solder sheet to form diffusion welding. The invention can form brazing and diffusion welding joints at the same time of friction stirring spot welding, increase the effective bearing area of ​​solder joints, and improve the tensile shear force of the joints.

The invention relates to a non-equal-diameter welded butt joint aluminum alloy pipe. According to the diameter of the aluminum alloy pipe, an aluminum alloy pipe joint with a diameter slightly larger than the diameter of the pipe is processed. hole, the center line of the grooved through hole is perpendicular to the axis of the pipe joint, and the distance between two adjacent grooved through holes is not less than the hole length of each grooved through hole; A 50-60° bevel is processed on the inner surface of both ends; then the above-mentioned ends and grooved through holes are welded respectively, and then the pipe joint is subjected to local heat treatment, and finally an anti-corrosion coating is prepared and applied to the pipe joint. The invention has simple operation and implementation, and is easy to be popularized in industry.

The invention discloses a grouting and filling method in an irregular mined-out area. The grouting and filling method in the irregular mined-out area comprises the steps that firstly, a to-be-built building group is taken as a protected object, and the governance range of the mined-out area is determined according to boundary angles; secondly, a plurality of grouting and filling belts are arrangedin the governance range at intervals, and the grouting and filling belts are in annular or arc shapes; and thirdly, grouting is conducted on the positions of the grouting and filling belts through grouting devices, and the filling body formed by grouting and coal columns in the mined-out area commonly form a structural support. According to the grouting and filling method in the irregular mined-out area, the problems that in the prior art, in terms of the grouting and filling method in the irregular mined-out area, the governance cost is high, the potential danger that the coal column is instable and the ground sinks suddenly, and the sinking-reducing effect is difficult to ensure are effectively solved.

The invention relates to a bearing device for an exhaust gas turbocharger, having a first radial bearing (13) and a second radial bearing (14), wherein the radial bearings (13, 14) are configured forradially mounting a shaft (8) of the exhaust gas turbocharger (2) with a rotational axis (11), and wherein a first outflow gap (18) and a second outflow gap (23), respectively, are configured betweenthe first radial bearing (13) and a first supporting wall (17) of the exhaust gas turbocharger (2) for axially supporting the first radial bearing (13), which first supporting wall (17) extends radially and is configured so as to face a turbine wheel (7) of the exhaust gas turbocharger (2), and between the second radial bearing (14) and a second supporting wall (22) of the exhaust gas turbocharger(2) for axially supporting the second radial bearing (14), which second supporting wall (22) extends radially and is configured so as to face a compressor impeller (6) of the exhaust gas turbocharger(2). According to the invention, for axial and simultaneous radial bearing and / or for supporting the radial bearing, the first outflow gap (18) and / or the second outflow gap (23) are / is configured soas to be inclined or curved with respect to the rotational axis (11) at least partially with the configuration of an angle (alpha) which is greater than or less than 90 DEG.

The invention discloses a towing vehicle. The towing vehicle comprises a main frame and a loading plate, wherein the main frame comprises a front vehicle frame and a rear vehicle frame; the loading plate is arranged between the front vehicle frame and the rear vehicle frame; a fixing rack is arranged under the loading plate; two ends of the fixing rack are respectively fixed on the front vehicle frame and the rear vehicle frame; the loading plate comprises a left plate body and a right plate body; and sliding rails are respectively arranged at the front end and the rear end of the left plate body and the right plate body. The towing vehicle is simple in structure and convenient to use. The loading surface of the towing vehicle can be regulated, and the loading capacity can be changed; andbesides, the regulating process is simple, rapid and easy to operate, and change can be quickly made on a spot, so that regulating operation is convenient and quick. The towing vehicle is high in practicality and convenient to popularize.

The invention relates to a welding connection method for aluminum alloy pipes with different diameters. According to the diameter of the aluminum alloy pipes, an aluminum alloy pipe joint with a diameter slightly larger than the diameter of the pipe is processed, and several grooves are respectively opened along the circumferential direction on both sides of the pipe joint. hole, the center line of the grooved through hole is perpendicular to the axis of the pipe joint, and the distance between two adjacent grooved through holes is not less than the hole length of each grooved through hole; A 50-60° bevel is processed on the inner surface of both ends; then the above-mentioned ends and grooved through holes are welded respectively, and then the pipe joint is subjected to local heat treatment, and finally an anti-corrosion coating is prepared and applied to the pipe joint. The invention can be used to connect aluminum alloy pipes of different diameters in any size, and has simple operation and implementation, and is easy to be popularized in industry.