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42results about How to "Reduce face pressure" patented technology

Belt speed reducer for electric power steering device and electric power steering device

A belt deceleration device for an electric power steering device, comprising: a driving pulley with a first helical tooth, a driven pulley with a second helical tooth, a driving belt with a third helical tooth, at the twist angle of each helical tooth Between β and the coefficient of friction μ between the first or second helical teeth and the third helical teeth, a relationship of tan β<μ is maintained. In addition, in the electric power steering device, the backlash adjustment between the gears meshing in the speed reduction device, or the adjustment of the belt tension of the speed reduction device is performed.
Owner:NSK LTD +1

Earthquake-isolation energy dissipator for ultra-high-voltage converter transformer

The invention discloses an earthquake-isolation energy dissipator for an ultra-high-voltage converter transformer. The earthquake-isolation energy dissipator comprises a plurality of earthquake-isolation supports, steel plates and thin rubbers which are arranged horizontally are arranged on the earthquake-isolation supports from top to bottom at intervals, and central holes are arranged at centers of the earthquake-isolation supports and provided with lead cores inside. The earthquake-isolation energy dissipator is characterized by further being provided with a squared foundation valve plate composed by steel beams, an upper connecting plate and a lower connecting plate, wherein the plurality of earthquake-isolation supports are installed at steel beam nodes of the foundation valve plate, the upper connecting plate and the lower connecting plate are parallel, and the upper and lower surfaces of the earthquake-isolation supports are connected with the centers of the upper connecting plate and the lower connecting plate respectively. According to the earthquake-isolation energy dissipator, the stability is guaranteed, simultaneously, the horizontal stiffness is small, the earthquake-isolation damping effect can be improved, soft limiting and anti-falling functions are provided, the safety of the earthquake-isolation energy dissipator under the action of earthquakes can be guaranteed, when the earthquake-isolation fails, a certain damping effect is also provided, and the safety function is provided in case of failure. The earthquake-isolation energy dissipator is low in construction cost, simple in construction and provided with good social benefits.
Owner:CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP

Chain

InactiveCN102235461AReduced sliding contact areaReduce resistanceChain linksDriving chainsEngineeringEquidistant
The invention provides a chain which enables to effectively reduce sliding contact resistance and wear of the parts that come into sliding contact. The chain (100) comprises multiple link plates (110), (120) which, with front and rear pin holes, are rotatably interconnected and are slidingly contacted by a guide member (150). The edge (121) of at least one link plate (120) that comes into sliding contact forms a convex curvature with continuous curvatures in the direction the chain is extended. Meanwhile, the apex (123) of the edge (121) of the convex curvature is located at a position equidistant from centers of the front and rear pin holes. The convex edge (121) has different curvatures on front and rear sides of the apex.
Owner:TSUBAKIMOTO CHAIN CO

Face pressure reducer of closed compressor

The face pressure reducer of closed compressor includes cylinder, rotation shaft, upper and lower bearing boards, partition board, guide board and spring for guide board. Technologically, the present invention features that at least one notched pressure exhausting spigot is set on the thrust bearing side of each bearing board axially supporting the rotation shaft or one thrust side of the rotation shaft corresponding to the thrust bearing side of each bearing board, and the pressure exhausting spigot has certain volume to hold compressed gas. The present invention can reduce face pressure acting on the thrust bearing of bearing board or on the thrust bearing of the rotation shaft and prevent the wear of the two parts.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD

Heavy-duty floating worktable

A heavy-duty floating worktable comprises a worktable body, a lower beam, a slide plate and a floating roller. The floating roller consists of a pin, a spring, a wheel, bearings and a shaft. A channel-steel wheel holder is arranged on the lower portion of the pin, a cylindrical pin is arranged at the center of the upper plane of the channel-steel wheel holder, the shaft is mounted on the channel-steel wheel holder, and the wheel is mounted on the shaft. Circular stepped holes are uniformly formed on the left and the right of each of the front and the back of the lower surface of the worktable body, the floating roller is mounted in the stepped holes of the lower surface of the worktable body, the spring is sleeved on the cylindrical pin between the upper plane of the channel-steel wheel holder of the pin and the bottom surface of the first stepped hole, and the wheel is tangent with the surface of the lower beam. The heavy-duty floating worktable has the advantages of compact structure and maintenance convenience. The floating roller balances 80% of dead weight of the worktable and reduces pressure for grease to flow into an oil groove on the slide plate, and thus service lives of lubricating elements are prolonged and service and maintenance cost are reduced. The residual weight of the worktable is enough to guarantee seamless fit of the worktable body and the slide plate.
Owner:DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1

Worm gear mechanism

The invention provides a worm gear mechanism. The worm gear mechanism (44) is configured to comprise a worm (70) which is connected to an electric motor, and a worm wheel (80) engaged with the worm. In the worm wheel (80), at least a tooth flank (81a) is formed of a resin material. In the tooth flank (81a), an engagement recess (81dr), which is based on a the trajectory of a contact point being in contact with a tooth (71) of the worm (70) according to a rotation of the worm (70), is formed by injection molding only, together with the tooth flank, using a mold (100). The engagement recess (81dr) comprises a plurality of points (P1a-P9a) which are recessed the most in a the direction of a tooth of the tooth flank of the worm wheel correspondingly to the trajectory of the contact point with which the most convex portion of the tooth (71) of the worm (70) is in contact. A line (Loa) which connects the plurality of points intersects with respect to a tooth width center line (Ct) of the tooth flank (81a) of the worm wheel (80).
Owner:HONDA MOTOR CO LTD

Idle gear device and engine

The invention relates to the technical field of idle gear shafts, and discloses an idle gear device and an engine. The idle gear device comprises an idle gear, a bearing bush and two idle gear shafts.A center hole is formed in the idle gear. The bearing bush is arranged in the center hole of the idle gear. A center hole of the bearing bush comprises two conical holes symmetrically formed. The large-diameter ends of the conical holes are located outside the bearing bush. Each idle gear shaft is in a circular truncated cone shape. The two idle gear shafts are arranged in the conical holes correspondingly and can rotate relative to the bearing bush. A lubrication gap is formed between the outer wall of each idle gear shaft and the inner wall of the corresponding conical hole. The idle gear device can bear axial force and prevent axial movement of the idle gear shafts and eccentric wear of the idle gear shafts and the bearing bush, and reliability of the idle gear device is improved.
Owner:WEICHAI POWER CO LTD
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