36results about How to "Maintain friction" patented technology

The apparatus of the present invention provides an improved automotive accessory drive system. The automotive accessory drive system including a drive pulley operatively connected to an engine, and a plurality of driven pulleys operatively connected to one of a plurality of driven devices. A flexible drive belt connectively couples the drive pulley and the plurality of driven pulleys, and is operable to transfer drive forces therebetween. The automotive accessory drive system also includes a flexible drive belt tensioner operable to maintain frictional engagement between the flexible drive belt and the drive pulley and at least one of the driven pulleys. The flexible drive belt tensioner has a damper element that preferably includes a damper housing, and a variable viscosity fluid disposed within the damper housing. The variable viscosity fluid is configured to provide a variable dampening rate and is selectively operable to lock the flexible drive belt tensioner.

A speed reduction device of a vehicle for reducing the rotation of drive wheels includes a casing mounted on a vehicle frame, first and second drive axles rotatably mounted on the casing and connected to first and second drive shafts, respectively, and a driven sprocket wheel and a brake disc for braking the first and second drive axles are mounted on the first drive axle. The second drive axle is detachably joined to the first drive axle.

A clamping unit, particularly for an injection molding machine, includes at least one moving platen which is moveably arranged on a frame element. At least one hydrostatic support is provided in an area between the platen and the frame element for facilitating back and forth displacement of the moving platen to thereby avoid speed-dependent friction values. Operation of the clamping unit is realized by building up pressure in a hydrostatic support before the moving platen is initiated for displacement so that the moving plate is slightly raises platen in relation to the frame element. After displacement of the moving platen, the pressure in the hydrostatic support is decreased again.

The invention discloses a paper feeding wheel and a manufacturing method thereof. The paper feeding wheel consists of a plastic framework and a rubber wheel sleeved on the plastic framework, wherein the rubber wheel is made of a rubber composition; and the rubber composition comprises rubber with high wear resistance and strength, an effective rubber vulcanizing system, more than one antioxidants, and a proper amount of reinforcing filler and softening agent, wherein the effective rubber vulcanizing system is suitable for a composition of butadiene rubber and natural rubber; one of the more than one antioxidant has a function of assisting in demoulding after rubber is vulcanized; and the proper amount of reinforcing filler and softening agent can improve the strength of the rubber wheel and cannot obviously improve hardness. The invention has the advantages that: the manufacturing process is simple, and the rubber wheel is formed by a mold through one-time compression moulding, and is not required to be processed; the surface of the paper feeding wheel is hardly subjected to frost spray; and the frictional property of the surface of the paper feeding wheel can be kept for a long time.

This application discloses an automatic rewinding device for charging pile wires of new energy vehicles, which includes: an outer cylinder for winding or releasing the charging wire in a spiral shape, and an automatic device for restricting the distribution of the charging wire along the spiral trajectory on the outer cylinder for reeling. The wiring device, the automatic wire clamping device that clamps and fixes the charging wire that has been wound on the outer cylinder of the reel, and also includes a pre-adjustment device; the pre-adjustment method includes the following steps: rotating the active screw to be exposed above the machine head housing part; the active screw rod rotates to drive the square nut to move along the square longitudinal hole; the movement of the square nut adjusts the compression amount of the adjustment pressure spring under normal conditions; and then adjusts the adjustment pressure spring to the adjustment longitudinal rod The elastic force of the adjustment longitudinal rod and the pressing stress on the inclined end face to the right ensure that the adjustment disc and the left end of the pendulum block assembly are in close contact and maintain a certain pressing force and friction.

The invention discloses a terminal of a motor of a new energy automobile, Including bottom plate, A take-up wheel is arrange on an outer wall of one side of that bottom plate, A support column is arrange on that outer wall of a side of the take-up wheel which is far away from the bottom plate, Threaded rings and support rods, the support column and the support rod are both positioned above the threaded ring, and the support column is positioned on one side of the support bar, one end of the support rod is provided with a fixing ring, a first splint is arranged on the inner wall of one side ofthe fixing ring, and a threaded rod is screwed on an outer wall of one side of the fixing ring, on one hand, the invention can effectively winding and winding excess wiring cables, On the other hand,it effectively reduces the contact amount between the terminal and air, avoids the damage and leakage caused by water corrosion of wiring ends in the air, improves the safety of the terminal connection and prolongs the service life of the terminal.

The invention discloses an automatic elastic locking bolt. The automatic elastic locking bolt is characterized in that an accommodating groove is formed in a screw; the accommodating groove is communicated with a horizontal straight slot; a cylinder is arranged at the bottom of the accommodating groove, and a telescopic rod of the cylinder extends upwardly; a push block is arranged at an end of the telescopic rod of the cylinder; a switch for controlling the cylinder is arranged on the upper surface of a bolt head; 'I'-shaped portions of 'L'-shaped rotary blocks are accommodated in the accommodating groove, and the bottoms of the 'I'-shaped portions of the 'L'-shaped rotary blocks are in contact with the push block; gaps are reserved between the lower ends of protrusions and the bottom of the horizontal straight slot; the 'I'-shaped portions of the two 'L'-shaped rotary blocks can slide up and down in the accommodating groove; the 'I'-shaped portions of the two 'L'-shaped rotary blocks can be downwardly turned over when upwardly sliding to the highest positions; 'horizontal' portions of the 'L'-shaped rotary blocks comprise fixing blocks, connecting blocks and elastic components. The automatic elastic locking bolt has the advantages that the protrusions can be supported by the elastic components to be in contact with the surfaces of two sides of a plate, contact force and friction force of the protrusions and the surfaces of the two sides of the plate can be kept, and the automatic elastic locking bolt is small in occupied space and convenient to use and is portable.

An automatic belt biasing device is provided for biasing a drive belt into frictional contact with rollers of a conveyor. The belt biasing device maintains a drive belt in contact with rollers of a live roller conveyor to provide drive for the rollers to propel items or packages along the conveyor. A spring attached to a pivot arm or pair of scissoring pivot arms adjusts a biasing force applied by guide wheels of the belt biasing device to the drive belt due to changes in drive belt tension. The belt biasing device may be selectively adjustable based on required roller pitch distances. The belt biasing device is pivotably coupled to the roller conveyor allowing the guide wheels to apply equal pressure to the drive belt while allowing the pivot arms to actuate and increase or decrease the biasing force provided by the belt biasing device.

The invention discloses a multi-reinforced granular material pile, which is arranged inside soft soil, and comprises hollow cylindrical vertical reinforcement and filler filled in the vertical reinforcement, and the vertical reinforcement circumferential surface in the filler is evenly arranged along the axial direction There are horizontal reinforcements, the horizontal reinforcements are placed between the fillers, and the axial reinforcements are evenly arranged along the radial direction of the vertical reinforcements. The multi-reinforced granular material pile of the present invention is more suitable for soft soil. The present invention also provides a construction method of the above-mentioned multi-reinforced granular pile.

The invention provides a thread slip preventive plastic nut. The screw-in end of the inner surface of a threaded hole of the plastic nut is provided with a slope; the diameter of the screw-in end of the threaded hole is less than that of an external thread of a tapping screw. The thread slip preventive plastic nut has the advantages that the nut is used for matching with the tapping screw, thread connection friction and pretension can be still retained for the nut under vibration, impact, variable load and sharp temperature fluctuation, loosening and thread slip are prevented for the nut and fitting safety of a fastener is improved.