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 syringe coated with a lubricant containing a silicone oil and a fine silica powder on the inner surface of the barrel of the syringe can be used for injection of a surface-active drug solution without oil droplet formation on the inner surface while preventing an increase of the gasket sliding friction.

An object of the present invention is to improve an anti-abrasive property of an operating rod by using a surface hardening heat treatment without a post finishing process and to enhance a response of the operating rod by preventing powders from being attracted to a sliding surface of the operating rod. Another object is to decrease a machining cost of the operating rod. The capacitive control valve is comprised of a solenoid rod portion communicating with a moveable core of the solenoid portion, an operating rod connected with the solenoid rod portion, a valve body defined in the operating rod and opening or closing a control fluid passage hole and a fixed core oppositely arranged relative to the moveable core, the fixed core retaining a guide hole, the guide hole guiding the operating rod in freely moveable a manner which longitudinally extends through an internal bore wherein the operating rod is processed at no more than 500° C. by a low temperature surface hardening treatment.

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.

A wind turbine lattice tower structure includes a plurality of structural members connected together to define an open lattice tower, with the structural members including vertical leg members and diagonal braces extending between the vertical leg members. Pairs of the diagonal braces form cross braces having an intersection point therebetween. A damping bolt connection assembly is provides at the intersection point of the cross braces and is configured to attach the cross braces together at the intersection point while providing for relative movement of each individual cross brace along a defined longitudinal section of the other respective cross brace.

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.

A wind turbine lattice tower structure includes a plurality of structural members connected together to define an open lattice tower, with the structural members including vertical leg members and diagonal braces extending between the vertical leg members. Pairs of the diagonal braces form cross braces having an intersection point therebetween. A damping bolt connection assembly is provides at the intersection point of the cross braces and is configured to attach the cross braces together at the intersection point while providing for relative movement of each individual cross brace along a defined longitudinal section of the other respective cross brace.

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.

A steering column assembly includes an upper jacket and a lower jacket partially disposed within said upper jacket. A bushing is disposed between the upper jacket and the lower jacket. The upper jacket and the lower jacket are collapsible along a longitudinal axis in response to a collision event. A first roller mechanism and a second roller mechanism are mounted to the upper jacket near a forward end and a rearward end of the bushing respectively for engaging the lower jacket in rolling engagement. The first and second roller mechanisms resist a resultant force caused by a bending moment created by a transverse load applied to a distal end of the upper jacket to minimize an increase in a sliding frictional force between the bushing and the lower jacket.

The invention discloses a side overturning crash cushioning device of a passenger car and an application method thereof. The technical scheme of the invention is as follows: a sensor, a receiver, a window buckle switch, a lock pin switch, a window net, a lock pin, an internal pad, an external pad and a clamping hole are arranged at the corresponding parts of the passenger car. When the wheels at one side of the passenger car are wholly hung in the air and about to overturn, a sensing signal is sent to the receiver by the sensor; then the related devices are started by the receiver; the window net is opened so as to protect passengers in the passenger car so that the bodies of passengers, particularly the heads, are protected to prevent direct collision with the ground; and meanwhile, the external pad at the top of the passenger car is popped up and contacted with the ground when the passenger car overturns so as to greatly reduce the impact force between the body of the passenger car and the ground and increase the friction between the body of the passenger car and the ground, so that the body of the overturned passenger car slides for a shorter distance. Through the invention, the shortcomings of the similar technology at prevent are overcome; and the technical design of the invention reaches the advanced international standards.

The invention provides a zirconia or alumina hollow ball grading machine, comprising a material bin for storing the un-separated mixture, a feeding device for conveying mixtures and a ball body separation device. The zirconia or alumina hollow ball grading machine is characterized in that the ball body separation device is a sorting conveying belt with conveying direction inclining from bottom totop; and the sorting conveying belt has a coarse surface. The zirconia or alumina hollow ball grading machine mainly solves the technical problem of effectively separating the zirconia or alumina hollow ball mixtures into different sorts. The zirconia or alumina hollow ball grading machine overcomes the actuality that the nonmetal hollow ball mixtures are difficult to separate in the professionalfield; the manpower resource is greatly saved; the optimization of the manpower resource configuration is benefited; the production efficiency is greatly improved; the production cost is reduced; by adopting the machine for separation, the mechanization degree is greatly improved, the separation specification is more standard; the separation can be carried out more precisely; the operation is stable, and the zirconia or alumina hollow ball grading machine has a simple structure in the whole.

The invention belongs to the technical field of specialized robots, and discloses a flexible mechanical arm system for deep cavity operation and a continuum robot. The flexible mechanical arm system comprise a functional end and a control end, wherein, the functional end comprises a flexible mechanical arm module, a camera shooting and lighting module, a top fixing module, a scaling module, a driving module, a transmission module and a sensor module; the control end comprises a flexible mechanical arm control module and a camera shooting illumination control module, and the flexible mechanical arm is moved to a designated pose; and the sensor control module is used for realizing position feedback of the driving device and acquisition feedback of pulling pressure of a flexible cable or a rod, and realizing acquisition of real-time force in a rope driving process and an initial pre-tightening function of a force sensor. The system is high in universality, high in modularization degree, safe and small in relative size; meanwhile, the friction between a steel-plastic hose and a scaling disc is reduced; and large sliding friction force generated by the sharp change of a wire in the steel-plastic hose along with the steel-plastic hose is reduced, and the continuum robot has enough torsional rigidity due to the fixing mode of interval discs.

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.

The invention discloses an autonomous escape system for a high-rise building. The autonomous escape system for the high-rise building comprises an escape knapsack, a horizontal slot type rail and a vertical slot type rail, wherein the horizontal slot type rail and the vertical slot type rail are arranged on the high-rise building; the end part of the horizontal slot type rail is connected with thevertical slot type rail; the vertical slot type rail extends to a building bottom from the connected part of the topmost layer of a building and the horizontal slot type rail, and comprises multiplesections of vertical single rails; each two sections of vertical single rails are connected through a fixed frame; a one-way inserting type assembly, a control bolt and at least two groups of spring fasteners are fixed onto the escape knapsack; a sliding main slot and slot rails arranged on two sides of the sliding main slot are arranged on each vertical single rail; the one-way inserting type assembly is inserted into the slot rails; and the control bolt is perpendicular to the sliding main slots so as to be screwed into the middle part of the one-way inserting type assembly and is abutted against the inner walls of the sliding main slots. The invention further discloses an escape method of the system. The autonomous escape system for the high-rise building provided by the invention is not limited by the building height, and is simple to install, low in cost, dispense with electric energy, and capable of being used by multiple persons.

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 invention belongs to the technical field of centrifugal pumps, and particularly relates to a centrifugal pump capable of conveniently adjusting the direction of a water outlet. For solving the problems that in the prior art, when the water flow direction is changed or a conveying place is replaced, the operation is troublesome, time and labor are wasted, the workload is large, conveying cannot be carried out at multiple places simultaneously, the working efficiency is reduced, and the practicability is low, the following scheme is proposed. The centrifugal pump comprises a bottom plate, a pump body is fixedly connected to the top of the bottom plate, the pump body is provided with a water inlet end and a water outlet end, the water outlet end is rotationally sleeved with a casing pipe in a sealed mode, and a connecting pipe is connected to the top end of the casing pipe through a flange. According to the centrifugal pump, the angle of a box body can be adjusted by rotating pusing rods, so that pipeline installation and traction are convenient; by rotating a rotary knob, not only can the one-way flowing direction of water flow be adjusted, but also the two-way conveying effect can be achieved, the working efficiency is improved, and practicability is high; and through sliding of an installing plate, installation is convenient , and overall movement and adjustment of the pump body can be facilitated.

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.