58results about How to "Automatically compensates for wear" patented technology

The invention discloses a method for lifting and releasing a descending mechanism through an intelligent winch device. The method comprises the following steps that an information acquisition elementis arranged on an output shaft of a winding drum, the movement speed and position information of a load vehicle which is lifted through the winding drum are acquired; a caliper disc brake is arrangedon the output shaft of the winding drum; a plurality of hydraulic oil ports of the caliper disc brake are connected with a hydraulic system provided with an electromagnetic overflow valve, a proportional pressure reducing valve and an electromagnetic reversing valve correspondingly; the hydraulic system, the information acquisition element and the control system are connected correspondingly, thecontrol system is enabled to control one or more of the electromagnetic overflow valve, the proportional pressure reducing valve and the electromagnetic reversing valve to act according to the movement speed and the position of the load vehicle, the oil supply pressure of the hydraulic system to the caliper disc brake is adjusted so as to adjust the brake torque of the caliper disc brake to the load vehicle. According to the method, the caliper disc brake directly brakes the output shaft of the winding drum, the brake torque is large and adjustable, so that the caliper disc brake is suitable for braking the large load, and the speed reducing and braking effects on the load vehicle are improved.

The invention discloses a planetary roller screw with a clearance eliminating nut. The planetary roller screw with the clearance eliminating nut is used for eliminating the axial clearance between a roller and a nut and the axial clearance between a roller and a screw at the same time. According to the technical scheme, on the basis that elastic elements (7 and 9) are added to half nuts (6 and 10) respectively for pretightening, the clearance eliminating nut (8) is used in cooperation, pretightening force is generated through the combined action of elastic deformation of the elastic elements (7 and 9) and elastic deformation of an elastic thin-wall radial plate A in the clearance eliminating nut (8), and therefore the effect of eliminating the axial clearance between the roller and the nut and the axial clearance between the roller and the screw is achieved. The planetary roller screw with the clearance eliminating nut is simple in structure, convenient to manufacture and high in practicability.

The invention relates to an automatic filling sealing structure for a high-pressure valve, which comprises a valve rod filling box body, a valve rod, a filling assembly and a support plate, wherein a difference pressure ring block in a step shaft sleeve structure is coaxially arranged on the valve rod arranged between the support plate and the filling assembly in the filling box body, a gap is formed between the upper plane of the step of the difference pressure ring block and the radial matched surface made in the filling box body, a waveform elastic element is coaxially pressed on the valverod arranged between the difference pressure ring block and the support plate, the filling assembly is coaxially arranged on the valve rod arranged in the filling box body at the inner side of the difference pressure ring block and sequentially comprises a filling pad, woven forming fillings, a filling separation sleeve and forming press ring fillings from top to bottom, the woven forming fillings, the filling separation sleeve and the forming press ring fillings are fixedly assembled. The sealing can be automatically formed under the medium pressure effect, the structure is simple, the effect is obvious, the sealing reliability of the movable sealing position of the valve rod is greatly improved, the filling abrasion can be automatically compensated through the structure, and the sealingpressure of the fillings in the use process is maintained.

The embodiment of the invention discloses an automatic packing tightening polish rod sealer and belongs to the technical field of oil extraction equipment of oil fields. The automatic packing tightening polish rod sealer comprises a packing pressing cap and a packing box connected to the packing pressing cap, wherein a packing, a hydraulic piston and a piston gland are arranged in the packing box;the piston gland, the hydraulic piston and the packing box jointly encircle an upper sealing oil cavity, a lower sealing oil cavity is formed in the packing box below the packing, and pressure oil inan oil well flows into the lower sealing oil cavity and the upper sealing oil cavity successively through a gap. According to the automatic packing tightening polish rod sealer, it is convenient to introduce the pressure oil in the lower sealing oil cavity to the upper sealing oil cavity, the pressure oil is directly acted to the upper surface of the hydraulic piston, and the hydraulic piston under the action of the pressure oil pressurizes and seals the packing automatically to prevent excessive wear of the packing caused by a way of manually increasing a pretightening force generally, so that the service life of the packing is prolonged. The automatic packing tightening polish rod sealer is simple in structure, low in processing and manufacturing cost and safe and reliable.

The invention discloses a screw compressor shaft seal with an automatic compensation function, and belongs to the technical field of accessories of screw compressors. A screw compressor comprises a projecting shaft and an end cover arranged on the end part of the compressor; the shaft seal comprises a shaft sleeve sleeving the projecting shaft and a lip seal embedded in a center hole in the axial middle of the end cover, and a sealing lip of the lip seal is matched with the outer wall of the shaft sleeve; The screw compressor shaft seal is characterized in that a conic surface is formed in the outer wall of the shaft sleeve, the lip seal is conical, and the conical sealing lip is adhered to the conical surface of the shaft sleeve. The screw compressor shaft seal is capable of prolonging the service life of the lip packing, improving the sealing effect of the lip seal, and lowering the use cost and maintenance cost of the screw compressor.

The invention relates to an automatic compensation method of a bottom dead center of a turret punch press. The automatic compensation method comprises the following steps that different plate information is inputted by a CMA program, a variable I is transmitted to a PLC, the PLC selects corresponding abrasion loss II according to the variable I, and judges whether the position of the bottom dead center needs to be automatically compensated or not, and when compensation is needed, the abrasion loss II is used as a variable II to be fed back to an NC controller, and a new angle position of the bottom dead center is calculated by the CMA program. The using times of a die core is judged by the PLC to obtain corresponding abrasion loss of the die core, the new angle position of the bottom dead center is calculated by the CMA program for feeding the variable back to the NC controller, the problem that the in-die depth of the die core is not enough since the die core is worn is solved, the abrasion loss can be automatically compensated, and the enough in-die depth of the die core is ensured.

The invention relates to a novel welding device. The novel welding device comprises a conducting rod, a connecting rod, a conducting plate, a first welding head and a second welding head; the conducting plate is fixed to the conducting rod; two ends of the connecting rods are respectively connected with the conducting rod and the conducting plate; the first welding head is fixed to the conducting plate, and while the second welding head is fixed to the connecting rod; a gap through which a welding wire passes is formed between the first welding head and the second welding head; the connecting rod and the conducting rod are connected through an adjusting bolt; one end of the adjusting bolt, provided with threads, is sleeved with the connecting rod; one end of a straight pin is fixed to the conducting rod through an insulating sleeve. Compared with the prior art, the novel welding device has the beneficial effects that 1) the connecting rod arranged enables separated arrangement of the welding heads, thus the gap at the part in which the welding wire is clamped at the head part of a welding gun can be automatically fine adjusted, the welding wire can pass through smoothly, and a continuous clamping force is provided for the welding wire; 2) the wear can be automatically compensated, foreign matters on the welding wire can be removed, and thereby high conductivity is ensured; 3) the structure is simple, the use effect is great, the welding quality can be effectively improved, and the consumption of welding wire can be reduced.

The invention relates to the technical field of washing machines, in particular to a drum washing machine. The drum washing machine comprises a washing machine shell, wherein a washing drum is arranged in the washing machine shell and comprises a washing front drum and a washing rear drum; the washing front drum is connected with the washing rear drum in a sealed manner; the washing rear drum rotates relative to the washing front drum; the washing rear drum rotates along with a motor; and the washing front drum is fixed relative to the washing rear drum. The washing rear drum rotates relativeto the washing front drum, and water and clothes in the washing drum are driven to rotate so as to wash the clothes. The washing drum is not divided into an inner drum and an outer drum, the circumstance that the outer wall of the washing drum is full of water, particularly water which have been used for washing clothes is avoided, dirt can be prevented from being accumulated on the outer wall ofthe washing drum, the outer wall of the washing drum does not need to be cleaned, meanwhile, water between the inner drum and the outer drum of the washing drum is saved, and the water is saved further.

The invention relates to a marine rudderstock double-sided lip seal ring which comprises a seal ring body. An upper inner side lip and an upper outer side lip as well as a lower inner side lip and a lower outer side lip are integrally arranged at the upper end and the lower end of the seal ring body in a coaxial opposite-symmetrical outwards-inclined extending way; a sealing surface on which the lip sealing end between the upper inner side lip and the upper outer side lip is located is perpendicular to a seal ring inner hole, and a sealing surface on which the lip sealing end between the lowerinner side lip and the lower outer side lip is located is perpendicular to the seal ring inner hole, so that a double-sided end surface sealing structure is formed; sloping bench ring surfaces are integrally arranged on one sides, close to the seal ring inner hole, of the top parts and the bottom parts of the upper and lower inner side lips; a stainless steel strengthened ring is arranged in themiddle of the peripheral rubber of the seal ring body; and polytetrafluoroethylene seal rings are arranged in the sloping bench ring surfaces. The marine rudderstock double-sided lip seal ring provided by the invention adopts a double-sided lip sealing structure so as to be good in rudderstock sealing effect, less in vibration sensitivity, and less in rudderstock surface wear.

The invention relates to a low-wear rotary compensator. The low-wear rotary compensator comprises an outer cylinder (1) and an inner cylinder (2), wherein the outer wall of the inner cylinder is sleeved with a rubber sleeve (4), and the rubber sleeve is sleeved with a pressure-bearing cylinder (5). Annular surfaces extending inward are correspondingly arranged at the two ends of the pressure-bearing cylinder, and flanges extending outward are correspondingly arranged on the two ends of the rubber sleeve. A baffle ring (3) is arranged on the left side of the rubber sleeve, and a gland (5) is arranged on the right side of the rubber sleeve. A left annular surface of the pressure-bearing cylinder is hermetically connected with a plurality of drainage tubes (8), and the drainage tubes sequentially penetrate through the left flange and the baffle ring of the rubber sleeve. The low-wear rotary compensator is characterized in that the left annular surface of the rubber sleeve is in close contact with the baffle ring and the rubber sleeve and the pressure-bearing cylinder form a closed cavity after compressed by the gland, the pressure of fluid causes the rubber sleeve to cling to the outer wall of the inner cylinder to realize the seal between the inner cylinder and the outer cylinder. The greater the pressure of the fluid of the rubber sleeve, the closer the contact between the rubber sleeve and the inner cylinder. When the inner cylinder rotates relative to the outer cylinder, the friction force borne by the rubber sleeve is small, and the wearing capacity of the rubber sleeve can be automatically compensated under the action of the inner pressure, and the sealing performance is maintained.

The invention discloses a novel sliver discharging device which comprises a bracket, a supporting rod, a cutter, an air cylinder and gas supply equipment, wherein the lower end of the supporting rod is rotatably connected with the bracket; the cutter is rotatably arranged at the upper end of the supporting rod; the air cylinder is fixedly connected with the bracket and provided with a piston rod; and the gas supply equipment is connected with the air cylinder. The upper end of the piston rod is rotatably connected with the middle upper portion of the supporting rod. The abrasion loss of a cutting edge of the cutter can be automatically compensated under the action of the air cylinder so that the cutter can be tightly attached to the roller wall of a roller, and accordingly smooth rubber cutting and slice discharging can be guaranteed. The reliability is good, and the structure is simple.

The invention discloses a spiral conveyor with a blade wear-resistant layer capable of being compensated. The spiral conveyor comprises a cylinder body, a screw rod and a driving device, wherein the screw rod is arranged in the cylinder body in a penetrating mode, the driving device is fixed to the outer end of the cylinder body, and spiral blades are fixed on the outer side surface of the screw rod; a plurality of limiting screws are sequentially fixed on the portions, located inside the cylinder body, of the spiral blades and close to the outer end of the cylinder body, each limiting screw is provided with a blade wear-resistant block, each blade wear-resistant block is provided with a movable limiting groove, the inner end of each blade wear-resisting block sleeves outside the corresponding limiting screw of the spiral blade, the limiting screws are arranged in the movable limiting grooves, and a thrust spring is arranged between each blade wear-resistant block and the outer end ofthe corresponding spiral blade. According to the spiral conveyor, when the wear-resistant blocks are abraded, the wear-resistant blocks can automatically exit through the thrust springs, so that the abrasion loss is compensated, and not only is the service life of the spiral blade greatly prolonged and the stable working efficiency can be kept, but also the abrasion-resistant blocks can be directly replaced on the construction site when the wear-resistant blocks are damaged.

The present invention relates to a height adjusting device using in a mechanical unit for screening combustible materials. The device comprises a fixing member, a base frame, at least one guide rod, a movable plate and a driving source. A drive sprocket and a driven sprocket are coupled to the fixing member to form a single unit. The base frame is adapted to be fixed on the top of a main frame. The main frame is adapted to fixedly supporting a mixed material conveyor. The guide rod is adapted to be vertically fixed to the top surface of the base frame. The movable plate is adapted to be fitted to the guide rod, thus moving up and down. The driving source is adapted to be fixed to the base frame and is connected to the lower side of the movable plate, thereby moving the movable plate up and down, wherein the fixing member is adapted to be fixed to the movable plate.

The invention discloses a stirrer magnetic fluid sealing device. The stirrer magnetic fluid sealing device is composed of an inner ring and an outer ring, a high-speed main shaft is vertically arranged in a shaft table, a belt wheel is arranged at the top of the main shaft, a high-speed bearing block is arranged below the main driving belt wheel, and the upper part of the belt wheel is provided with a magnetic fluid seal III and an electronic slip ring; a bearing press plate under the high-speed bearing block is located on the shaft table, and a magnetic fluid seal II, a gear and a magnetic fluid seal I are sequentially arranged under the bearing press plate; the inner ring is arranged on the high-speed main shaft, an upper bearing and a lower bearing are arranged between the inner ring and the outer ring, and a hollow shaft is used as a mounting carrier; and O-shaped rings are arranged at the bottoms of the magnetic seals, and the sealing rings and the top of the hollow shaft form theseals. Compared with a traditional mechanical sealing structure, the stirrer magnetic fluid sealing device is characterized in that the structural elements are small and compact, installation is convenient, and the elastic force of an elastic element is replaced by the magnetic force, so that influences caused by a manufacturing error, an installation error and the axial displacement during working are avoided; and compared with a common sealing structure, the device is reliable in working, small in abrasion and long in service life.

The invention discloses a high airtight rotary discharger with a storing spiral cavity and a contact type self-compensating flat surface. The high airtight rotary discharger comprises a cylinder shell horizontally arranged and an impeller component arranged in the cylinder shell, wherein two ends of an impeller shaft of the impeller component extend out of a left end cover and a right end cover of the cylinder shell respectively, and are in sealed rotational connection with the left and right end covers through bearings arranged on the left and right end covers; the impeller shaft consists of a power input shaft and a vane mounting shaft which are connected through a cross-linked coupling; a ring groove is axially arranged on the end surface where the vane mounting shaft and the power input shaft are connected, and a pressure spring is mounted in the ring groove; an annular wearable liner plate in tight fit with the vane of the impeller component is fixed on the inner surface of the right end cover; and a feeding barrel and a discharging barrel are communicated with the upper side and lower side of the right end cover. The invention has the advantage that pretty high air locking tightness can be ensured whiling realizing uniform discharge under differential pressure, and the automatic wear compensation can be realized during the discharging process.

A spherical hinged support for opening and closure of a door comprises a door frame, a door leaf, a movable hinged support body connected to the door leaf and a fixed hinged support body connected to the door frame, wherein the movable hinged support body is provided with a hinge sleeve, the fixed hinged support body is provided with a hinge sleeve, and the hinge sleeves are hinged to each other. The spherical hinged support for opening and closure of the door is characterized in that notches are formed in the combination portions of the hinge sleeves correspondingly, and a steel ball is placed into each notch. The spherical hinged support for opening and closure of the door further comprises a pressure application structure for applying pressure to the steel balls. The spherical hinged support for opening and closure of the door is simple in structure and small in friction resistance, spherical surface abrasion is automatically compensated, and spherical surface is kept.

The invention belongs to the technical field of valves, and discloses a self-compensating vacuum valve. The self-compensating vacuum valve comprises a valve body, a valve rod, a valve seat, a flow rate adjusting mechanism and a valve element, wherein the valve body is provided with an air inlet and an air outlet; the valve seat is arranged in an inner cavity of the valve body; the flow rate adjusting mechanism is arranged at the outside of the valve body and is connected to one end of the valve rod; the valve element is arranged in the valve body and is in match with the other end of the valve rod; the valve seat is in sealing connection with the wall of the inner cavity of the valve body; a valve hole is formed in the center of the valve seat; the valve element is a circular platform of which one end is provided with a taper; a guide groove which protrudes from the surface of the valve seat and fits the taper of the valve element is formed in the valve hole; a valve column provided with a concave groove is arranged at a part where the outside of the valve body is in contact with the valve rod; the concave groove is filled with a flexible filler; a pressing plate which is connected to the valve column in a force balancing manner is arranged o the valve rod; the first surface of the pressing plate fits the concave groove, and the second surface of the pressing plate is provided with locking structures which are used for connecting the pressing plate and the valve column; the pressing plate is elastically connected to the locking structures. According to the vacuum valve, the valve element is automatically centered, and the valve rod is extruded by the filler to downwards move, so as to automatically compensate the abrasion loss of the valve element and the guide groove, thus the abrasion resistance of the vacuum valve is improved, and the service life is prolonged.