36results about How to "Bearing area reduced" patented technology

The invention discloses a drilling and soil taking deviation correcting and treating method for a house foundation. The drilling and soil taking deviation correcting and treating method includes steps of 1, measuring and calculating settlement of a building to be corrected; 2, determining variation of soil hole ratio of the foundation according to the principle that the cross sectional area of lateral confinement soil sample before and after pressing; 3, filling all holes in the foundation after soil taking with gas, and determining soil taking amount according to the soil hole ratio; 4, determining soil taking parameters of foundation soil; 5, before correcting deviation of the building, arranging monitoring points, forming a data net by data monitored by the monitoring points, mutually linking the data and timely adjusting soil taking time according to the settlement observation results and real-time back pouring and crack propagation conditions of the observed building during soil taking; stopping soil taking when the deviation of the building is corrected, filling soil taken holes by medium-coarse sand and finishing deviation correcting.

A method and apparatus for providing an air bearing pad having improved roll angle sigma is disclosed. Two Z-shaped air bearing pads are formed to provide two additional negative pockets for improving roll angle stiffness of the slider and for shrinking the air bearing area.

The compressor according to the present invention may include: a cylinder including an outer cylinder part and an inner cylinder part; and a blade part connected between the outer cylinder part and the inner cylinder part, the blade part being fixed to the casing. In addition, the rolling piston is slidably coupled to the vane portion while making a rotational movement between the outer cylinder portion and the inner cylinder portion to form an outer compression space and an inner compression space. Thereby, it is possible to reduce the weight of the rotating body, obtain low power loss with respect to the same cooling power and obtain a small bearing area, thereby reducing refrigerant leakage, and easily change the cylinder capacity in an expansion manner. In addition, refrigerants may be discharged toward each other in opposite directions in each compression space, thereby reducing vibration noise of the compressor. In addition, a back pressure groove can be formed on the upper surface of the drive transmission part of the rolling piston, thereby reducing the friction area between the rolling piston and the upper bearing, and making the rolling piston and the upper support caused by the oil filled in the back pressure groove. Frictional losses between the supports are reduced.

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 multi-signal output video playing device with a protective structure, comprises a base plate and a force receiving plate, wherein the left and right side walls of the base plate are embedded with brackets, the front face of the base plate is fixed with clamping rails, a matching rack is arranged on the side of the clamping rails far away from the horizontal centerline ofthe base plate, insertion plates are fixed on the left and right sides of the surface of the force receiving plate, and the force receiving plate is located on the side of the base plate close to thevertical centerline of the top plate. The multi-signal output video playback device having a protective structure is provided with a plurality of substrates, forming a first carrier structure of the video playback apparatus, the carrier structure is completely used for supporting and fixing the video playing device, the upper and lower ends of the base plate are respectively clamped in the top plate and the base, and the base plate can obtain the displacement action power on the top plate, and the air pipe is externally connected with the air pump body, and the pneumatic telescopic rod is correspondingly expanded and contracted through the control of the air pressure, so as to drag the base plates on the left and right sides to move horizontally.

An extended life roller grills for re-thermalizing and merchandising food product with easily replaceable bearing assemblies, drive assembly and roller tubes. The grill is comprised of rotation of a plurality of heated internally tubes, a drive assembly that transfers rotational motion to the roller tubes from a cam or chain or gear system or cog belt attached to a motor providing rotational motion and force to the roller tubes. Roller grill chain drive or gear drives, or cog belt or cam drives that utilize replaceable bearing assemblies for extending the service life the roller grill. A cam drive assembly substantially increases the reliability, ease of assembly and disassembly, serviceability, and maintenance of the roller grill. Cam drive provides for easy removal, servicing and replacement of roller tubes not available on other drive systems for roller grills. Replaceable bearing journals to extend the life span of chain, gear, cam or belt drive grills.

The invention discloses a metering head pressure test tool. The metering head pressure test tool comprises a metering head, wherein the left end of the metering head is provided with a left flange; the right end of the metering head is provided with a right flange; the left flange is in fastening connection with the right flange; the center of the right end of the right flange is provided with a T-shaped liquid inlet pipeline; an O-shaped seal ring I is arranged between the left flange and the metering head; an O-shaped seal ring II is arranged between the right flange and the metering head; an O-shaped seal ring III is arranged between the left flange and the right flange; and the left flange and the right flange are connected together through a bolt. The metering head pressure test tool has the advantages of simple manufacturing and convenient use, and enables high-pressure water to enter the cavity of the metering head through the liquid inlet pipeline of the right flange and the pressure test work to be finally completed, so the practical bearing area of the right flange is substantially decreased, thereby the generation of a deformation phenomenon is effectively prevented.

The invention discloses an adjustable automatic load-reduction sound barrier. The load-reduction sound barrier comprises an upper-layer plate, a middle-layer plate, a lower-layer plate, a base and stand columns. The adjustable automatic load-reduction sound barrier has the advantages that on the basis of theoretical analysis and numerical simulation calculation, noise mainly transmitted by a pantograph and a wheel rail can be straightly blocked and absorbed through a seamless structure of the upper-layer plate and the lower-layer plate; the spreading direction and spreading distance of sound waves can be effectively changed while the middle-layer plate can guarantee that train wind and natural wind pass freely, and the aim of lowering noise is achieved; mounting is convenient, and economical efficiency is achieved; the sound barrier is of an assembled structure, flow-process construction can be achieved, work efficiency can be improved, construction time can be shortened, and a large amount of manpower and cost can be saved; the cost is saved; the structure is durable; the negative influence of wind loads on the sound barrier is eliminated through the sound barrier, fatigue damage of loads of the train wind and the natural wind to the structure of the sound barrier is reduced, and therefore the aims of prolonging the maintenance period and service life of the structure of the barrier are achieved, and the use cost is greatly saved.

An effective contact length in race surfaces formed on grooved races cut in an outer ring and an inner ring is made as greater as permitted to improve the load-carrying capacity, and correspondingly guide parts born against axially opposite ends of a roller are made as less as possible in width to reduce frictional contact resistance applied to the axially opposite ends of the roller, thereby preventing a skew of the roller. An inside circular surface on the outer ring is staggered or different in level on opposite sides of a outside grooved race to make greater the race surface than an effective contact length of circular rolling surfaces of the rollers and correspondingly less the guide part in width than the race surface.

The invention relates to a method for testing mechanical properties of an electronic gun heater assembly, comprising the following steps: (1), taking at least two heater assemblies under detection; (2), marking an original scale distance on a heater of each heater assembly under detection, and determining original scale distances L0 and S0; (3), testing yield strength Sigma0.2 and tensile strength Sigmab of the heater assemblies under detection in an actual vacuum environment at different temperatures; (4), establishing a change-with-temperature linear relationship of the yield strength Sigma0.2 and tensile strength Sigmab of the heater assemblies under detection by linear fitting; (5), according to the linear relationship, calculating to obtain the yield strength Sigma0.2 and tensile strength Sigmab of the heater assemblies under detection at the actual operation temperatures. The method enables chemical tensile performance parameters of a heater or a combination of a heater with a platinum sheet and / or a cathode head in a vacuum high-temperature operating environment to be accurately measured, and the testing problem of engineering needs is solved.

The invention belongs to the field of non-destructive testing, and discloses a method for making a multi-purpose non-destructive testing natural defect test block. , both the base metal and the weld can be magnetized; the groove of the base metal is filled by electrode arc welding to complete the weld filling; and in the process of filling welding, unfused defects, incomplete penetration defects, Stomatal defects, slag inclusion defects and tungsten inclusion defects; determine the design crack area on the weld, and apply ferrous sulfide powder on the design crack area, and then perform shallow penetration and remelting on the weld in the design crack area; The remelted area of ​​the weld is ground to remove unmelted ferrous sulfide; the surface of the weld is covered with face welding to obtain a multi-purpose non-destructive testing natural defect test block. The manufacturing process is simple and the cost is low, and the cracks with various defects and close to the natural form meet the needs of training and teaching.