107results about How to "Increase sliding friction" patented technology

A vehicle control system uses a touchscreen display to displaying a graphical HMI and detect a contact point where touched by a user's finger. A haptic texture system has an electrode disposed across the touchscreen display and a signal generator generating an oscillating signal to produce a potential difference between the finger and the electrode resulting in a corresponding perceived texture as the finger slides over the touchscreen. A control circuit is configured to set at least a frequency or amplitude of the oscillating signal to vary the perceived texture according to first and second modes while navigating the graphical HMI. The first mode uses a localized texture mapping defined by respective feature icon selection regions on the touchscreen display. The second mode uses a status texture mapping relating the perceived texture to each potential adjustment setting available for a feature icon that has been selected using the first mode.

A flow modulation valve has a slidably translating hollow armature with at least one energizable coil wound around and fixably attached to the hollow armature. The energizable coil or coils are influenced by at least one permanent magnet surrounding the hollow armature and supported by an outer casing. Lorentz forces on the energizable coils which are translated to the hollow armature, increase or decrease the flow area to provide flow throttling action. The extent of hollow armature translation depends on the value of current supplied and the direction of translation depends on the direction of current flow. The compact nature of the flow modulation valve combined with the high forces afforded by the actuator design provide a flow modulation valve which is highly responsive to high-rate input control signals.

The invention discloses a novel tunnel segment structure and a stress monitoring device thereof, and relates to the technical field of tunnel laying and tunnel and underground engineering. According to the key points of the technical scheme, the novel tunnel segment structure includes novel lining segments capable of being spliced into unit tubes, sealing gaskets and pressure sensors, wherein thesealing gaskets and the pressure sensors are arranged at the junctions of the segments. The segments are in a cross shape, grooves and convex strips are arranged at the side edges of the segments alternatively and the segments are connected through the grooves and the convex strips in a joggle-joint mode to form a tunnel. The side walls of the segments are covered with rubber asphalt waterproof coating, and vulcanized ethylene-propylene rubber elastic sealing gaskets are arranged at the joints of the segments. The pressure sensors are arranged above the convex strips. Compared with the prior art, the sliding friction between the segments is increased through the cross-shaped segments, the pipeline structure is more stable, and the joggle-joint structure simplifies the construction process;meanwhile, a pressure monitoring device is additionally arranged for monitoring and recording the pressure subjected by the segments in real time for carrying out risk prevention, and further research is facilitated; and in addition, a waterproof system has certain reference value for the problem of water seepage.

The invention relates to a pressure-bearing lost circulation additive for a drilling fluid and for stably bearing pressure on a smooth fracture leakage wall surface. The lost circulation additive is composed of 10%-20% of damping material, 45%-50% of bridging material and 35%-40% of filling material by weight, wherein the damping material is an industrial metal screen, having the size of the damping material is 1.0*1.0mm to 3.0*3.0 mm and the thickness of the damping material is about 0.5 mm; the bridging material is calcium carbonate particles, and the standard mesh number of the screening mesh product of the bridging material is lower than 20 meshes; the filling material is a mixture composed of calcium carbonate powder and flexible graphite powder; the calcium carbonate powder is further divided into three grades to realize multi-grade filling and to form a compact shielding layer; and the mesh number of the flexible graphite is greater than 150, and the anti-pressure ability of a bridge plug section is improved. With the pressure-bearing lost circulation additive for the drilling fluid and for stably bearing pressure on the smooth fracture leakage wall surface disclosed by the invention, leak stoppage success rate and bearing pressure for smooth fracture leakage can be improved, leakage stoppage failure due to complexity is reduced, the benefits of exploring and developing a bored well are improved; and the preparation process of the lost circulation additive is simple and convenient, the source of the materials of the lost circulation additive is broad, and the lost circulation additive is easy to spread and apply.

The invention provides a wireless superficial tissue ultrasonic probe used for ultrasound-guided puncture. The wireless superficial tissue ultrasonic probe used for ultrasound-guided puncture comprises a baseboard, wherein the baseboard is placed on a sickbed or an operating table surface through supporting legs fixedly installed at four corners of a bottom surface, first through grooves are longitudinally formed in two sides of the top surface of the baseboard respectively, an arch support is arranged above the baseboard, the arch support arches up, and two ends of the arch support slidinglymatch the corresponding first through grooves through sliding block guide rail structures respectively. According to the wireless superficial tissue ultrasonic probe used for ultrasound-guided puncture, through an ingenious linkage structure, a doctor can complete operation of moving and locking the ultrasonic probe and supplementing coupling liquid only with one hand, and the doctor can take onehand off the ultrasonic probe at any time to focus on a puncture task or to complete other operation in the premise of enabling the position of the ultrasonic probe to be unchanged and the other handto always hold puncture equipment, so that the task difficulty and the physical burden of the doctor are greatly reduced.

The invention relates to the field that different actions are required to be sequentially combined to prevent a sealing part of a device from being opened accidentally, and in particular to a safe accidental-opening-prevention container cover. The safe accidental-opening-prevention container cover comprises a base (1), a turning cover (2), a rotating shaft (3) and torsional springs (4) and is characterized by further comprising a turning cover lock catch (5) and a plug core (6). The turning cover lock catch (5) is composed of a lock catch sliding block (51), lock catches (52), lock catch connecting rods (53) and lock catch springs (54), and the two sides of the plug core (6) are each fixedly provided with a lock hook (61); and when the turning cover (2) rotates around the rotating shaft (3) to cover the plug core (6) of the base (1), the inclined face end of each lock catch (52) fits the inclined face end of the corresponding lock hook (61). The safe accidental-opening-prevention container cover is simple in structure, convenient to use, good in protection effect, safe and reliable.

A mounting device with one metallic base plate, from which a plurality of mounting eyelets protrude. The mounting device is obtainable by incising a plurality of arc-shaped eyelet blanks while leaving two connection sections per eyelet blank into the surface of the base plate and production of the mounting eyelets by bending the eyelet blanks out of the base plate around a bending edge in the area of the connection sections. At least part of the eyelet blanks are arranged as groups of eyelet blanks with the latter being nested to each other. Preferably, the groups of eyelet blanks are arranged rotated relative to each other.

The invention relates to an automatic telescoping device (1) for a safety belt, comprising a shaft (4), a main drive spring arranged so that the shaft (4) is pre-tensioned along a winding direction (a) of the safety belt (2) (7), a ratchet (12) rotatably arranged relative to the shaft (4), a locking device (15) for locking the rotational movement of the ratchet (12) in the winding direction (a) and a A balance spring, which is arranged so that when the ratchet (12) is locked, a pre-tightening force acting against the direction of the pre-tightening force of the main drive spring (7) can be transmitted to the shaft (4). The present invention is characterized in that, The power transmission between the balance spring (20) and the ratchet (12) is carried out in a friction closed mode.

The invention relates to a friction-shear composite quasi-constant-resistance large-deformation anchor cable so that a problem of poor ductility deformation of a conventional anchor rod can be solved.The anchor cable comprises a sleeve rod and an anchor rod. The sleeve rod includes a large inner diameter section, a ring-shaped first baffle, and a small inner diameter segment; and the first baffleis arranged at a connecting part between the large inner diameter section and the small inner diameter section. The anchor rod passes through the sleeve rod; a circular-truncated-cone-shaped yieldinganchor head sleeves the anchor rod fixedly; the side wall of the yielding anchor head is abutted against the outer end of the large inner diameter section; and the small end surface of the yielding anchor head faces the inner end of the large inner diameter section. An annular shearing core is distributed on the inner wall of the large inner diameter section; the inner wall of the shearing core is inclined in an inclination direction conforming to the inclination direction of the side wall of the yielding anchor head; the shearing strength of the shearing core is smaller than the yielding anchor head; and the shearing strength of the joint between the shearing core and the large inner diameter section is smaller than the shearing strengths of the yielding anchor head and the large inner diameter section. The anchor cable is mainly used for strengthening anchorage of the rock mass.

The poppet valve device is composed such that a plurality of axial passages of substantially the same diameter and length communicating to the high-pressure room formed inside the valve seat member between the poppet valve body and the valve seat member are provided in the valve seat member, the passages being located adjacent to each other, or passages being located axially symmetrically, and the annular gap formed between the periphery of the poppet valve body and the inner perimeter of the projecting part on which the valve seat face of the valve seat member is formed is narrow to restrict liquid flow through the annular gap. The electronic controlled fuel injection apparatus equipped with the poppet valve device is composed such that the lower end part of the poppet valve body and the bottom of the valve device accommodating part of the fuel injection apparatus are formed to restrict the flow of the fuel between the lower end of the poppet valve body and the bottom of the valve device accommodation part to the central hollow of the poppet valve body, whereby the occurrence of bouncing is prevented.

The invention discloses an inner surface polishing and derusting tool of a hollow axle of a CRH train, and belongs to the field of polishing devices for the inner surfaces of hollow axles of CRH trains. The tool comprises a lengthened rod, a polishing head base, an end nut, a polishing piece assembly and an outer-layer polishing piece. The outer-layer polishing piece and the polishing piece assembly of the polishing and derusting tool both adopt low-cost industrial scouring pads; the surface hardness satisfies the inner diameter cleaning and derusting demands of an axle hollow cylinder; the inner diameter of the hollow axle cannot be scratched; and the advantages of convenience to tailor, manufacture and replace are achieved; the polishing head base, the end nut and the polishing piece assembly form a polishing end; the outer-layer polishing piece is wound at the external of the polishing end to increase the outer diameter; a certain pressure can be applied to the inner side wall of the axle hollow cylinder to increase the slide friction force in cleaning and derusting; a butt joint base is used for coaxially and fixedly connecting the tool with an electric portable drill; and thetool is synchronously rotated along with the electric portable drill, so that the derusting operation on the inner side of the axle hollow cylinder is simple, convenient, labor-saved and efficient.

The invention discloses a sample plate conveying device which comprises obliquely-arranged slides, driven rollers, transmission gears and a chain assembly. The slides incline downwards from the first ends of the slides to the second ends of the slides, and are provided with grooves formed in the length directions of the slides. The driven rollers are arranged at the first ends of the slides. The shaft ends of the driven rollers are provided with driven roller gears. The transmission gears are in engaged connection with the driven roller gears. The chain assembly is arranged under the slides and comprises chains and chain gears. Stop blocks are fixedly arranged on the chains and stretch out of the grooves in the slides. The chain gears arranged close to the first ends of the slides are engaged with the transmission gears. By adoption of the sample plate conveying device, sample plates can be conveyed to a certain position, time and labor are saved, the safety is high, and the reliability is good; the conveying states of the sample plates in the conveying process can be effectively guaranteed; and controllability of the conveying states of the sample plates can be achieved.

The present disclosure relates to a device including electrostatic brakes providing haptic kinaesthetic feedback to a user in e.g. assistive, rehabilitation or virtual reality scenarios, as well as tele-manipulation.

A center-less pointer type display apparatus includes a pointer moving device having a pointer section and a carrying section, and a containing case having a case body and a dial plate. A pointer accommodated in the containing case indicates a scale on the dial plate. The carrying section has a guide rail and a wire. A spring is interposed between a first support member and a second support member of the pointer section so that a lower portion and an upper portion of the spring push the first support member and the second support member respectively, and thereby holding an upper portion and a lower portion of the guide rail respectively. A wire fixing section is provided at an intermediate portion of the pointer section on a line connecting the upper pulley and the lower pulley.

The first maximum inclination angle θ1 is a maximum inclination angle of a link member 45 allowed by a clearance between a slit 41s of a rotor 21 and one end 45a of the link member 45; the second maximum inclination angle θ2 is a maximum inclination angle of the link member 45 allowed by a clearance between a slit 43s of a swash plate 24 and the other end 45b of the link member 45; the third maximum inclination angle θ3 is a maximum inclination angle of a first linking pin 46 allowed by a clearance between the first linking pin 46 and a first bearing hole 41a; the fourth maximum inclination angle θ4 is a maximum inclination angle of a second linking pin 47 allowed by a clearance between the second linking pin 47 and a second bearing hole 43a; and the fifth maximum inclination angle θ5 is a maximum inclination angle of the swash plate 24 with respect to the drive shaft 10 allowed by a clearance between the drive shaft 10 and a pair of the tilting guide faces 37, 37. Relations (θ3+θ4)<θ5<θ1, θ2 are established.

The invention belongs to the field of article conveying and particularly relates to a lifting type round article transfer device. The lifting type round article transfer device comprises a rack, a storage box, a lifting device and a conveying device. The interior of the storage box is of a conical structure. The lifting device is arranged in the storage box and comprises a conveyor belt which is vertically arranged in the storage box. The conveyor belt is provided with an inclined diversion through groove. The conveying device comprises a delivery chute and a baffle, the delivery chute is fixed to the rack and corresponds to the lower end of the diversion through groove, and the diversion through groove is matched with round articles in width. The rack is provided with a baffle used for preventing the round articles from slipping off. By the implementation of the lifting type round article transfer device, the problem that in the existing process of separation and lifting of round articles, operation is complicated, or the equipment cost is high is mainly solved.