43results about How to "Reduce the bearing surface" patented technology

The invention discloses an instrument for detecting the shearing strength of the interlayer of an asphalt pavement. The instrument comprises a base, a driving motor, a pushing piece which ensures that the driving motor drives a shearing piece to shear a sample through a transmission piece, and a force gauge for real-time detection of shearing force; the transmission piece is mounted on the base; a data acquisition and control system which analyzes and processes signal detected by the force gauge and accordingly controls the driving motor according to the processing results, and a host computer connected with the data acquisition and control system are further included; the driving motor is a stepping motor; and the data acquisition and control system adopts an MSP430 singlechip, and is engaged in two way communication with the host computer through a USB interface. The invention has the advantages of reasonable mechanical structure, small size, light weight, high degree of automation and convenient use and operation, and can effectively monitor and control the shearing piece to be tested in a real-time manner and greatly improve the measuring accuracy.

The present invention discloses a bearing assembly capable of assuring mechanical strength and reducing a friction coefficient and stress concentration, and a method for manufacturing the same. The present invention comprises a spherical journal and a hemispherical bearing that is made of a fiber reinforced composite and has a bearing surface for establishing a spherical pair with the spherical journal. The fiber reinforced composite can be constructed by arranging a uni-directional prepreg, woven fiber prepregs and staple-fiber prepregs in a variety of configurations, and thermoplastic resin particles or self-lubrication particles are uniformly provided on the bearing surface. It is possible to alleviate stress concentration generated on the bearing surface by forming a plurality of air channels capable of imparting directivity on an outer surface of the hemispherical bearing.

The invention belongs to the field of chemical equipment, and particularly discloses an anti-wall-adhering reaction kettle. The anti-wall-adhering reaction kettle comprises a kettle body, wherein the inner wall of the kettle body is made from a non-ferromagnetic material, and provided with an isolated cavity; a movable block which can be attracted by a magnetic substance is arranged in the isolated cavity; the top end of the kettle cover is provided with a driver which is fixed to the machine frame; the driver is rotatablely connected with a stirring unit positioned in the kettle body; the stirring unit comprises a stirring shaft; a plurality of stirring rods are hinged on the stirring shaft; and the working end of each stirring rod is fixedly provided with a stirring magnetic block. The anti-wall-adhering reaction kettle has the advantages of simple structure, uniform stirring and obvious anti-adhering effect.

The invention is a kind of water amusement device, which is realized with following mode: the manned swing floatation body is made up of floatation body, manned device, weighting device, pushing deflecting device. There sets a manned device on top of the floatation body. The subjacent end of the floatation body sets a weighting device. There sets a pushing and deflecting device in the floatation and under the floatation body. The crossing point of the floatation body rising force axle wire and the water surface is the supporting point of the lever system, the moment size of the lever system can ensure that when the floatation body is full load, a manned system maintaining the vertical balance is set on the vertical position of the water surface. The geometry axle wire and the floatation force axle wire are concurrent. The mass axis of each part or compound of the part overlaps with the floatation axle wire.

Drive arrangements for assemblies of an internal combustion engine, in particular for exhaust-gas recirculation valves, having a drive element (12), a housing (10) and an intermediate element (64) that is arranged so as to be preloaded between the drive element (12) and the housing (10), are known. To achieve all-round vibration decoupling of the drive element, it is proposed that the housing (10) have a static receiving part (32) and a cover (38) fastened thereon, which cover bears axially against a stop (60) on the static receiving part (32), wherein the intermediate element (64) is arranged radially between the cover (38) and the drive element (12) and so as to be elastically deformed axially between the drive element (12) and the cover (38), such that, in the case of an exhaust-gas recirculation valve, the electric motor (12) is loaded axially against a drive-side bearing bracket (42), which is formed on the housing (10), by the spring force of an elastically deformed intermediate element (64) and is mounted in the cover (38) radially by means of the intermediate element (64).

The invention provides an electric control anti-blocking butterfly valve. The electric control anti-blocking butterfly valve comprises a valve body with a cavity, a valve seat installed in the valve body, an upper valve shaft and a lower valve shaft, wherein the upper valve shaft and the lower valve shaft penetrate the valve body and the valve seat and are coaxially arranged. An upper valve plate is fixedly installed on the upper valve shaft and rotates in the valve seat around the upper valve shaft. A lower valve plate is fixedly installed on the lower valve shaft and rotates in the valve seat around the lower valve shaft. The lower valve plate and the upper valve plate can rotate to the same plane to be matched with the valve seat to close the butterfly valve. The ends, extending out of the valve body, of the upper valve shaft and the lower valve shaft are provided with an electric execution mechanism. The two valve plates controlled by the electric execution mechanism and opened and closed independently and respectively are arranged, so that time and labor are saved when the opening degree of the valve plates is adjusted, influences of pollutant blockage are avoided, and the blockage phenomenon is avoided. In addition, when the upper valve plate and the lower valve plate are opened and closed independently, stress faces can be reduced, pollutants can be stirred to the maximum extent and scattered, and therefore the pollutant self-removing function is achieved.

The invention relates to a wind driven generator with a windproof function. The wind driven generator comprises a wind wheel, an electric generator, a restricting and safety mechanism, a tower and an energy storage mechanism. The wind wheel comprises a fan assembly, a sliding assembly and a positioning assembly; the sliding assembly comprises a support, a sliding block, a first hinged block, a second hinged block and a third hinged block; the positioning assembly comprises a motor, a first circular gear, a second circular gear, a positioning unit, an iron block and a positioning block; and a damping assembly comprises a damping block, a push rod, a damping ring and a damping cabin. The wind driven generator with the windproof function is ingenious in design and high in feasibility; and when the wind power is larger, the restricting and safety mechanism sends a revolution signal to a PLC (Programmable Logic Controller), and the PLC controls the sliding assembly to retract fan blades so as to be parallel to a rotary shaft, so that the sectional area of the wind driven generator is reduced, the stress surface is reduced, the thrust of wind on the wind driven generator is reduced, the windproof property of the wind driven generator is improved, and the safety of the wind driven generator is ensured.

The invention discloses an automobile charging pile capable of preventing from being blown down by wind. The automobile charging pile comprises a mounting base; the top part of the mounting base is fixedly provided with a fixed column; a holding slot is formed in the top part of the fixed column; an automobile charging pile body is arranged in the holding slot; the top end of the automobile charging pile body extends to a position above the mounting base; a first groove is formed in the inner wall of each of the two sides of the holding slot; a first sliding rod is glidingly arranged in each first groove; a first clamping slot is formed in each of the two sides of the automobile charging pile body; and mutually adjacent ends of the two first sliding rods are correspondingly installed in the first clamping slots in manner of clamping. The automobile charging pile disclosed by the invention is simple in structure and convenient to operate; the automobile charging pile body can be rapidlyand conveniently adjusted in height, and thus, the automobile charging pile body can favorably stretch out and draw back in face of big wind, so that the stress surface of the automobile charging pile body is reduced, the automobile charging pile body is prevented from being blown down by wind, losses of people are reduced, and needs of people are satisfied.

The invention discloses a low-cost floating yaw type anti-typhoon wind power generation device and a typhoon resisting method, and provides a low-cost structure configuration and control strategy for improving the anti-typhoon capacity and reducing the degree of typhoon, and the characteristic that a floating system can freely rotate on a water body without a bearing and a rail is utilized. A set of expensive yaw bearing and control system of a traditional fan is omitted, the cost of a tower drum and a transmission chain structure can be further optimized through the self-adaptive directional stress state, and a structure that blades of a wind wheel can be put down and folded together under the typhoon condition is constructed. And in combination with control of the yaw system and the downwind blowing effect of wind power, all the blades point to the downwind direction in the typhoon environment, the upsetting moment of the wind power device is balanced, and therefore the typhoon disaster resisting capacity is greatly improved, and the safe operation capacity of a large fan within the 30-year service life is guaranteed.

The invention discloses a waterproof combined self-tapping screw, which includes a screw head, a screw rod and a thread. A silicone gasket is provided at the neck where the screw head and the screw rod are connected. The contact surface, and the second contact surface near the head of the self-tapping screw, form a profile angle between the first contact surface and the second contact surface, and the profile angle is 15°-45°; the thread The root of the first contact surface is connected to the axial direction of the screw through an arc-shaped transition section; the root of the second contact surface of the thread is directly connected to the axial direction of the screw, and the two straight lines meet to form an obtuse angle. A silicone gasket is assembled on the neck of the screw head and the screw rod, and when the self-tapping screw is completely locked into the connection material, it has a waterproof sealing effect; an arc-shaped transition section is added on the first contact surface side of the screw teeth, and the second of the screw teeth The contact surface side maintains its straight line connection and forms an obtuse angle to achieve the self-tapping effect of "easy to enter and difficult to exit" when self-tapping screws are locked in.

The invention belongs to the field of underwater launching, and in particular relates to a discarding petal capable of reducing fluid resistance. The discarding petal is formed by fastening four petals through an annular elastic belt, and is divided into a front-end circular-truncated-cone segment and a rear-end cylindrical segment, wherein the front end surface of the circular truncated cone hasan inclination angle inward. The interior of the discarding petal is provided with a through hole, and the rear end surface of the discarding petal has an inclination angle inward. The diameter D1 ofthe front end of the circular truncated cone of the discarding petal is determined by the cavitation diameter D formed by the projectile on the front end surface of the discarding petal, and D1 is 2-3mm larger than D2. According to the discarding petal provided by the invention, when the discarding petal leaves the chamber, water flows impact on thecircular-truncated-cone-shaped front end surface, and the front end surface becomes a cavitation device of the discarding petal, so that cavitation capable of wrapping the discarding petal is formed, the stress area of the front end surface of thediscarding petal is reduced by 40% or above, the resistance to the discarding petal leaving the chamber can be reduced to a certain extent, and the underwater launching speed is improved. The front end of the discarding petal adopts a circular truncated cone structure so as to reduce the bending deformation of the front end of the discarding petal.

The invention relates to a bearing unit having a rolling bearing and a retaining plate, wherein a shoulder for accommodating a retaining plate is formed at the outer ring of the rolling bearing, the retaining plate having a wall having a hole, the central axis of the hole is corresponding to the axially oriented bearing axis of the rolling body. The bore is provided with a radial first diameter step, the first diameter step being indicated by the first diameter and the second diameter, wherein the first diameter is smaller than the second diameter, the retaining plate is capable of being fromthe outer ring. The first end side is pushed up, and wherein the retaining plate is fixed at the outer ring of the rolling bearing by means of a locking element, and wherein the retaining plate is flush with the first end side of the outer ring in the mounted state, wherein the shoulder forms a groove for positively receiving the locking element, and wherein a first stop for the retaining plate isformed at the outer ring.

The invention discloses a hard alloy reamer bit which is formed by connecting a drill body and a drill handle. The hard alloy reamer bit is characterized in that an S-shaped cutter and a front cutter are arranged on the drill body; the drill handle is of a cylindrical structure; a locating groove is formed in the drill handle and close to the tail end of the drill handle. The front cutter, the S-shaped cutter and a chip removing groove are effectively combined, in work, the front cutter is in contact with a workpiece, then the S-shaped cutter conducts cutting, the drilling strength of the S-shaped cutter is reduced, the S-shaped cutter is protected, the service life of the drill bit is prolonged, the drilling efficiency is high, and the chip is smoothly removed.

The invention discloses an adjustable neck balance weight device based on diving, relates to the technical field of diving equipment, and provides the following scheme for solving the problems that due to an existing waist balance weight, the body specific gravity is unbalanced, use is limited, and the balance weight weight cannot be finely adjusted: the adjustable neck balance weight device comprises a storage sleeve; connecting holes are formed in the two ends of the storage sleeve; a buckle is installed in the connecting hole, a connecting belt is installed on the buckle, a cavity is formedin the storage sleeve, a connecting rod is welded in the cavity, an installing groove is formed in the connecting rod, a positioning sleeve is arranged in the installing groove, a fixing sleeve is movably arranged on the positioning sleeve in a sleeving mode, and a balancing weight is welded to the outer ring of the fixing sleeve. The adjustable neck balance weight device is simple and novel in structure, high in use comfort, capable of conveniently adjusting the number of the balance weights, suitable for people with different weights, capable of improving use flexibility, capable of being worn on the neck, capable of reducing the stress surface of the body in the advancing direction, capable of reducing resistance and suitable for popularization.

The invention discloses a welding device convenient to use and a using method thereof, relates to the technical field of welding, and aims to solve the problem that pipe fittings of different sizes cannot be flexibly fixed. The welding device comprises a machine body, a groove is formed in the outer wall of the top of the machine body, clamping blocks are arranged on the inner walls of the opposite sides of the groove, the inner walls of the two clamping blocks are slidably connected with the same lifting rod through third sliding grooves correspondingly, and the outer walls of one sides of the two third sliding grooves are arranged on the outer walls of the two sides of the lifting rod correspondingly; a sliding rail is arranged on the outer wall of the top of the machine body, and a first lifting column is arranged on the inner wall of the sliding rail; and the using method of the welding device comprises the following steps that the height of the first lifting column and the height of a second lifting column are adjusted, and the height of the lifting rod is adjusted, so that the horizontal positions of two containing bases are equal. The welding device can be flexibly adjusted to fix a workpiece according to the size of the welded workpiece, is suitable for different welded workpieces, and expands the application range.

The invention provides a memory fibre pillow, mainly comprising a pillow cover and memory fibres, wherein the interior of the pillow cover is provided with the memory fibres, the length of each memory fibre is 15-22mm, the degree of thickness of each memory fibre is 0.7-1.1D, the interior of the pillow cover is provided with one or multiple rows of inner cores, one or multiple inner cores are arranged in each row, and the memory fibres are arranged in the inner cores. The inner cores are arranged in the pillow cover, thus the memory fibre pillow is convenient to dismount and is simpler to wash. The memory fibres can slow rebound, and the memory fibres can not wound or tied each other; and meanwhile, the entire of the pillow cover and the inner cores is smooth after being washed, and the memory effect is not decreased. Besides, the air permeability of the fabric of the pillow cover is 1.5-3.0ml/(cm<2>.h), and the stitch length during sewing process is 8 stitches per centimetre, thus the memory effect of the pillow is improved. On the other hand, the memory fibre pillow has the characteristics of simple processing technique, no addition of chemical composition, safety and reliability.

The invention discloses a device capable of preventing a biomass pellet fuel from being shaken off. The device comprises a conveying belt. Sticks are arranged on the two sides of the upper surface of the conveying belt correspondingly. The axes of the sticks are parallel to the conveying direction of the conveying belt. The distance between the conveying belt and the side surface, away from the conveying belt, of each stick is gradually decreased from the edge of the conveying belt to the conveying center line of the conveying belt. The length of each stick is consistent with the length of the conveying belt in the conveying direction. The sticks are arranged on the upper surface of the conveying belt, so that the biomass pellet fuel located on the conveying belt is always located between the sticks, the situation that part of the biomass pellet fuel falls off the conveying belt is avoided, and the working amount of picking up of the fallen-off biomass pellet fuel by workers is decreased.

A diamond saw blade cold press forming machine, which consists of a frame, a guide post (2), a connecting rod (7), an upper die and a lower die, and an upper slide plate (3) and a middle slide plate are movably connected to the guide post (2) (5) and the lower plate (8), there are upper fixed plate (1), middle fixed plate (6) and lower fixed plate (9) between them to separate; it is characterized in that: on the described master oil cylinder (20) A small diameter oil cylinder (21) is provided as a quick oil cylinder, and the cylinder barrel of the quick oil cylinder is connected to the cylinder barrel afterbody of the main oil cylinder (20), and the piston rod is connected to the piston afterbody of the main oil cylinder (20). The production efficiency of the present invention can reach 2,000-3,000 pieces per shift; the mold can be fine-tuned conveniently, and there is no need to replace the mold for sawing diamond powder with different particle size ratios, the quality is relatively stable, the labor intensity is reduced, and the force-bearing surface is small. Long mold life and low energy consumption.

A multi-motor drive built-in valve for a large-flow gas meter comprises a valve body, a separation plate is arranged in the valve body, a pressure relief hole and a gas passing hole are formed in the separation plate, the diameter of the pressure relief hole is smaller than that of the gas passing hole, an opening opposite to the separation plate is formed in the valve body, an end cover for sealing the opening is arranged on the valve body, valve controllers are arranged on the end cover, the valve controllers comprise motor control parts and valve seals which can seal the pressure relief hole and the gas passing hole, the motor control parts on the valve controllers are all arranged outside the valve body, the valve seals on the valve controllers are arranged in the valve body, and the diameter of the valve seal for sealing the pressure relief hole is smaller than the diameter of the valve seal for sealing the gas passing hole. The multi-motor drive built-in valve has the advantages of being reasonable in structure, low in cost, and convenient to open and saving mounting space, and is suitable for being arranged on various types of large-flow gas meters for use, due to the arrangement of at least two valve controllers, in the valve opening process, the positive pressure action force of gas for the valve can be effectively released, and opening is more convenient and easier.

The invention relates to a novel rotational rectifying component in the field of brushless motors. A big hole is formed from the center of a square fixed seat and the center of a rectifying seat body, and steps are arranged at the front, rear, left and right positions of the rectifying seat body; a rectifying disc is arranged on the square fixed seat, through holes are formed in the positions, corresponding to bolt fixed holes, of the rectifying disc in a matched manner respectively, the rectifying seat body between the steps and the square fixed seat is provided with fixed blocks, three groups of connecting holes are formed in the fixed blocks, any two groups of connecting holes in the fixed blocks are fixedly connected with the through holes, close to the fixed blocks, in the rectifying disc through connecting plates, and the other group of connecting holes in any three groups of fixed blocks are connected with a bolt fixed substrate close to the connecting block through connecting plates. The novel rotational rectifying component can be widely applied to the field of brushless motors, the centrifugal force caused during bolt rotation is reduced by adding the fixed blocks, and bolts are avoided from being broken, so that the service life of the rotational rectifying component is prolonged.