74results about How to "Consistent wear" patented technology

A method and device for the delivery of a substance into skin via the rotational movement of a microabrader device reduces the effects of operator variability. The method includes applying a substance to an area of a patient's skin through the rotational movement of microprotrusions which may be imparted by a spring device present in the microabrader device or the motion of the operator through the handle of the microabrader device. The device may further include system and methods for monitoring pressure of the device against the skin and thereby promote consistency between applications and control of penetration depth. The delivered substance may be placed on the microprotrusions and a reconstituting liquid included in the microabrader device.

The invention discloses a movable central positioning feeding numerical control shearing machine which comprises a machine base, wherein a feeding mechanism, a conveying channel and a shearing mechanism are installed on the machine base, the feeding mechanism comprises a feeding wheel set driven by a motor, and the feeding mechanism is further provided with a transverse moving mechanism which regulates the transverse distance of the feeding wheel set; the conveying channel is installed behind the feeding mechanism, two sides of the conveying channel are provided with flanges limiting a material conveying route, and the flange on one side is fixed to serve as a material conveying base line; and the shearing mechanism comprises transverse shears and / or inclined shears which are installed above the feeding mechanism. The movable central positioning feeding numerical control shearing machine combines advantages of central positioning and single side positioning, and the feeding mechanism uses central positioning and can transversely move to conduct regulation; the conveying channel uses single side base-line positioning, and the flange on one side is fixed to serve as the base line; and when the shearing mechanism is fixed, the position of the shearing mechanism does not need to be regulated during shearing, moving inconvenience of large mechanisms can be reduced, and production efficiency is improved.

Vehicle pneumatic tyre for utility vehicles having a carcass (5), having a belt (9) which is built up radially outside the carcass (5) and having a profiled tread (10) which is built up on the belt (9), radially outside the belt (9), wherein the belt (9) is formed from at least four belt layers (14, 17, 13, 15) arranged lying one on the other from radially on the inside to radially on the outside, wherein the first belt layer (14) which is arranged furthest on the inside in the radial direction R is embodied with parallel strength members (24) embedded in rubber, the second belt layer (17) which is arranged on the first belt layer (14) is embodied with parallel strength members (27) embedded in rubber, the third belt layer (13) arranged on the second belt layer (17) is embodied with parallel strength members (23) embedded in rubber, and the fourth belt layer (15) arranged on the third belt layer (13) is embodied with parallel strength members (25) embedded in rubber, characterized in that the third belt layer (13) and the fourth belt layer (15) are working layers in which the strength members (23) of the third belt layer (13) enclose in their orientation an angle alpha with respect to the circumferential direction U where 10 degrees < alpha < 45 degrees and the strength members (25) of the fourth belt layer (15) enclose in their orientation in each case an angle gamma with respect to the circumferential direction U where 10 degrees <= gamma <= 45 degrees, wherein, when viewed in the circumferential direction U of the vehicle tyre, the strength members (23) of the third belt layer (13) have an opposed axial direction of inclination to that of the strength members (25) of the fourth belt layer (15), in that the strength members (24) of the first belt layer (14) enclose in their orientation an angle beta with respect to the circumferential direction U where 0 degrees <= beta <= 5 degrees, and the strength members (27) of the second belt layer (17) enclose in their orientation an angle epsilon with respect to the circumferential direction U where 40 degrees <= epsilon <= 75 degrees.

The invention discloses a wear leveling method and system for storage space, and a device. The storage space is divided into a plurality of storage blocks. The wear leveling method comprises the following steps that: establishing a storage block linked list, wherein the storage block linked list comprises the storage addresses, the erasure frequencies and the effective identification of all storage blocks, and the storage addresses, the erasure frequencies and the effective identification are mutually related; linking the storage addresses of all storage blocks in sequence according to the erasure frequencies to form a storage address data link; judging whether storage capacity in an address distributor is smaller than a threshold value or not, wherein the address distributor comprises thestorage address of a storage block to be used; and if the storage capacity in the address distributor is smaller than the threshold value, according to the storage address data link, writing the storage address which has the minimum erasure frequency and is effectively identified as an effective storage address into the address distributor. By use of the wear leveling method disclosed by the invention, the degree of wear of the storage block in the storage space can be consistent so as to prolong the service life of a memory with the storage space.

The invention relates to a flexible grinding robot for a track grinding machining assembly line. The flexible grinding robot comprises an industrial robot and a flexible grinding device, wherein the flexible grinding device comprises a connector, a drive motor, a movable support, abrasive belt wheel assemblies and a transmission wheel; the output end of the drive motor penetrates through the movable support and is provided with a driving wheel, and the driving wheel drives the transmission wheel to drive the abrasive belt wheel assemblies at the two ends to operate; and the connector is provided with a flexible grinding space, and the movable support is fixed in the flexible grinding space and swings left and right in the flexible grinding space. The flexible grinding device is clamped through an industrial robot to grind the track, so that the grinding efficiency is improved; the movable support can swing left and right, so that flexible grinding is achieved, and track damage is avoided; and meanwhile, the abrasive belt wheel assemblies at the two ends are functionally distinguished, the two sides of the track are conveniently ground separately, and a machine arm does not need tobe rotated greatly, so that the grinding efficiency is improved, it is guaranteed that the abrasion of abrasive belts at the two ends is consistent, and uniform replacement is convenient.

The invention provides a lifting mechanism for small electric sweeper disc brushes. The lifting mechanism comprises a bracket, an electric push rod and planar six-rod mechanisms, wherein each planar six-rod mechanism consists of a parallelogram mechanism, a connecting rod and a connector; and the parallelogram mechanisms and the electric push rod are both fixed to the bracket. The lifting mechanism for the small electric sweeper disc brushes has the following technical effects: 1) disc brushes are guided to perform translational lifting by adopting the planer six-rod mechanisms which are formed by the parallelogram mechanisms, so that the cleaning effect of the disc brushes is improved, the service life of the disc brushes is prolonged, and the aims of raising efficiency and saving energy are fulfilled; 2) by adopting the electric push rod and two planar six-rod mechanisms which are arranged symmetrically, the synchronous linkage lifting of the disc brushes on the two sides is realized, the consistency of the heights and the inclination angles of the disc brushes on the two sides is ensured, and the cost is reduced; 3) the electric push rod serves as a drive source, the power is taken from a storage battery of an electric vehicle very conveniently; and 4) the lifting mechanism is compact in structure, reasonable in layout and is matched with a vehicle frame conveniently.

The invention relates to a pneumatic vehicle tire for utility vehicles having a carcass (5), a belt (9) and a profiled tread (10), wherein the belt (9) consists of at least four belt layers (17, 14, 13, 15), wherein the third belt layer (13) and the fourth belt layer (15) are operative layers, the reinforcements (23, 24) thereof being arranged at an angle to the circumferential direction of 10 DEG - 45 DEG and the reinforcements (25) of the fourth belt layer (15) being arranged at an angle of 10 DEG - 45 DEG, wherein the reinforcements of the third and fourth belt layers (13, 15) are arranged such that they cross one another; the reinforcements (27) of the first belt layer (17) are arranged at an angle of 40 DEG - 75 DEG and the reinforcements (24) of the second belt layer (14) are arranged at an angle of 0 DEG - 5 DEG to the circumferential direction, wherein the reinforcements (23) of the third belt layer (13) and the reinforcements (27) of the first belt layer (17) have the same direction of inclination.

The invention relates to a tyre tread comprising at least one block (3) of rubber material of width W and length L with L>>W. The block extends in a circumferential direction (X) when the tread (1) is mounted on the tyre, the block (3) comprising a contact surface (5) intended to come into contact with the ground and a first lateral wall (7) and a second lateral wall (9) delimiting this contact surface (5). The block (3) further comprises a plurality of sipes (11, 11a, 11b) opening onto the contact surface (5) of the block, each sipe (11) extending over the contact surface (5) in an oblique direction, opening onto the first lateral wall (7) and onto the second lateral wall (9), the sipes of the block being oriented in the same direction. The sipes (11) are spread over the contact surface (5) of the block in such a way that when a sipe (11a) reaches the second lateral wall (9) another sipe (11b) begins from the first lateral wall (7) at the same circumferential level (N) on the block, and each sipe (11) comprises at least two parts.

The invention discloses a self-adaptive multi-disc sequenced large torque friction clutch which comprises a friction disc supporting plate, an inner disc spiral raceway sleeve and a plurality of outerfriction discs and inner friction discs alternately arranged between the friction disc supporting plate and the inner disc spiral raceway sleeve, the outer edge of each outer friction disc is in spline fit to the inner wall of an outer disc spline sleeve, the inner edge of each inner friction disc is in spline fit to the outer wall of an output spiral raceway drum, a plurality of inner disc starting retainer rings are mounted on the outer wall of the output spiral raceway drum in a sleeving manner, and each inner disc starting retainer ring is located on the side, close to a friction disc supporting plate, of each inner friction disc. By adopting the structure, the response speed is improved greatly, so that the quantity of the friction discs can be increased greatly, and therefore, the friction clutch can be applied to a large torque scene. It can be ensured that the inner friction discs and the outer friction discs are separated thoroughly and defects of a conventional multi-disc friction clutch are overcome, so that the wear resistance, stability and reliability of the friction clutch are improved greatly.

The invention discloses an elastic besom with adjustable elasticity. The elastic besom comprises a cylinder body, a piston rod, a piston, a brush, a pressure spring, a pressing plate and an adjustment bolt, wherein the cylinder body is arranged upside down, namely an opening of the cylinder body is downward; a threaded hole is formed in the rear wall of the cylinder body; the adjustment bolt is arranged in the threaded hole in a penetrating manner; the lower end of the adjustment bolt is propped against the pressing plate; the pressing plate is positioned in the inner cavity of the cylinder body; the piston is arranged on the piston rod; the pressure spring is arranged between the piston and the pressing plate; the lower end part of the piston rod is detachably connected with the brush; the brush of the elastic besom can elastically stretch according to the ups and downs change of a pavement, so that the abrasion to the bristles is alleviated, and the service life of the brush is prolonged; furthermore, the brush can be independently replaced, and the whole cleaning disk does not need to be replaced, so that the cost can be reduced. More importantly, the elasticity of elastic stretching of the elastic besom can be adjusted according to the abrasion degree of each brush, so that the abrasion to the brush can tend to be consistent; meanwhile, the cleaning requirements of different pavements can be met.

The invention provides a hulling machine for peeling paddy rice through a pair of peeling rollers rotating at different speeds, and particularly relates to peeling rollers of the hulling machine and a driving method thereof. Each peeling roller is partitioned into two parts of different diameters in a length direction respectively; and after the peeling roller of a smaller diameter on one side and the peeling roller of a larger diameter on one side in the pair of peeling rollers are arranged oppositely, and the peeling rollers rotate at the same rotating speed, so that peeling is realized. The peeling rollers are constructed in a way that: in the hulling machine in which the pair of peeling rollers are arranged oppositely and rotate at different rotating speeds respectively, each peeling roller is partitioned into two parts in the length direction, the diameter of one side is smaller than that of the other side, a part of the peeling roller on a smaller-diameter side and a part on a larger-diameter side are arranged oppositely, and a larger-diameter part and a smaller-diameter part are arranged oppositely.

The invention relates to a pneumatic vehicle tyre for utility vehicles, having a carcass (5), having a belt (9), which is built up on the radial outside of the carcass (5), and having a profiled tread (10), which is built up on the belt (9) on the radial outside of the belt (9), the belt (9) being formed from at least four belt plies (13, 15, 14, 17), which are arranged one on top of the other from the radial inside to the radial outside, characterised in that the first belt ply (13) and the second belt ply (15) are intersecting working plies, the reinforcing layers (23, 25) of which are arranged at an angle of 10 DEG - 45 DEG to the circumferential direction, and that the reinforcing layers (27) of the fourth belt ply (17) are arranged at an angle of 40 DEG - 75 DEG to the circumferential direction, and the reinforcing layers (24) of the third belt ply (14); are arranged at an angle of 0 DEG - 5 DEG to the circumferential direction.

The invention relates to a pin selecting piece group of a pin selector. The pin selecting piece group comprises a plurality of pin selecting pieces which are connected onto a shell of the pin selectorin a swinging manner and correspond to striking pins projecting out of a pattern bit, axis of oscillation of the plurality of pin selecting pieces are parallel to one another and stay on a same plane, each pin selecting piece is provided with a tool bit extending out of the pin selector shell, the tool bit is provided with an oblique surface, and the oblique surface can contact the striking pinscorresponding to the tool bit on the pattern bit in a sliding manner. The oblique surface forms an acute angle alpha with the length direction of the pin selecting piece, and the angle alpha corresponding to the oblique surface of the pin selecting piece is gradually increased according to a sequence from top to bottom. The oblique surface on the tool bit of the pin selecting piece has different oblique angles according to different positions, so that a friction contact distance between the original tool bit and the pattern bit is shortened, the friction force between the original tool bit andthe pattern bit is also reduced, the problem in the prior art that the striking pin is severely abraded on the pattern bit is solved, and the service life of the pattern bit is prolonged.