263results about How to "Increase self-locking ability" patented technology

The invention discloses an automatic clutch actuating mechanism. The automatic clutch actuating mechanism comprises a motor, a pulling rod and a actuating mechanism controller as well as a cylinder controlled by an electromagnetic valve, wherein the motor is connected with the pulling rod through a transmission part in a transmission way; the piston rod of the cylinder is connected with the pulling rod in a transmission way; the control ends of the motor and the electromagnetic valve are both connected to the actuating mechanism controller; and the actuating mechanism controller is used for controlling the motor and the cylinder to synchronously or independently run. According to the automatic clutch actuating mechanism, the cylinder is configured on the basis of an electric actuating mechanism to serve as an auxiliary element, so that the automatic clutch actuating mechanism can be driven by both the motor and the cylinder or also can be independently driven by the motor or the cylinder, so as to work stably and effectively for long time. The invention further discloses a control method for controlling the automatic clutch actuating mechanism.

The invention relates to a redundancy self-locking type manipulator gripper with a precisely controlled clamping force. The redundancy self-locking type manipulator gripper comprises a hand claw, a transmission mechanism, a locking mechanism, a power mechanism and a power loop, wherein the transmission mechanism and the shaft of the hand claw are coaxially arranged; the locking mechanism and the shaft of the hand claw are coaxially arranged; the power mechanism is combined with the transmission mechanism and provides a driving force to the hand claw; the power loop is used for conducting the driving force; when the hand claw needs to stop action, the locking mechanism and a power lock in the power loop cooperate with each other to complete dual locking of the position and the clamping force of the manipulator gripper. The manipulator gripper is applicable to situations that the clamping force needs to be precisely controlled, in addition, after the driving force is released, a ratchetwheel lock is matched with a hand claw clamping force locking spring, so that the energy is saved, and a self-locking effect is improved. With the combination of a swinging motor, a proportional overflow valve and a torque sensor, precise control on an output clamping force is completed, and the energy utilization efficiency is remarkably improved.

The invention discloses an antioxidant moisturizing beautifying gel. The antioxidant moisturizing beautifying gel has a formula composed of a seaweed extract, an aloe extract, nicotinamide, hydrogenated lecithin, vitamin E acetic ester, panthenol, dipotassium glycyrrhizinate, sodium hyaluronate, glycerinum, glycine betaine, carbomer, PEG-8 (Polyethylene Glycol), PEG-60, butanediol, hydrogenated castor oil, EDTA (Ethylene Diamine Tetraacetic Acid) disodium, triethanolamine, phenoxyethanol, lemon yellow CI19140, essence, and 50 to 200 parts of water. The antioxidant moisturizing beautifying gel is prepared through a high-tech technology, is antioxidative and can prevent the skin from being damaged by free radicals, inhibit the production of skin black red pigment and form a ventilated moisture film on the skin surface in order to improve the independent water locking capacity of the skin. The antioxidant moisturizing beautifying gel can obviously reduce the problems of cutis laxa, aging, wrinkles and dull skin, increase the elasticity of the skin of the face of a user and enable rejuvenated splendor after long-term use.

The invention discloses a water-cooled heat dissipation type pressure-resistant electronic cabin which comprises a main cabin body. A front end cover and a rear end cover are respectively arranged on both ends of the main cabin body. The main cabin body is sealed into a cavity by the front end cover and the rear end cover. A heat dissipation device is arranged in the cavity. The heat dissipation device comprises four heat sinks which are supported by cross-shaped telescopic brackets on both ends and are arranged on the inner wall of the cavity through the cross-shaped telescopic brackets. The heat sinks are arranged on electrical components. According to the water-cooled heat dissipation type pressure-resistant electronic cabin, the pressure-resistant cabin casing and the internal electrical device are respectively two separate systems, and can be completely separated; the convenience of assembling and debugging is improved; the electrical device is arranged on a separate heat dissipation bracket; the heat dissipation bracket can transfer heat of the electrical components to the wall of the pressure-resistant cabin and water outside the cabin; heat dissipation of the electrical device in the cabin body is realized; and in addition, the support effect of the heat dissipation bracket on the cabin wall enhances the pressure-resistant ability of the pressure-resistant cabin casing and improves the reliability of the whole system.

The invention relates to the technical field of underwater vehicle communication and particularly relates to an underwater self-folding antenna comprising an antenna assembly, an electronic cabin, a base, a driving mechanism and a bottom seat. The base and the driving mechanism are all arranged on the bottom seat, a rotating shaft is arranged in the base, the rotating shaft is driven to rotate bythe driving mechanism, the electronic cabin is connected to the base, the electronic cabin is driven to swing by the rotating shaft, the antenna assembly is mounted at an end of the electronic cabin away from the bottom seat, an electronic pressure switch is arranged on the electronic cabin, and the driving mechanism controls start and stop by the electronic pressure switch. When the underwater self-folding antenna does not need to communicate, the antenna assembly is laid down inside an aircraft, the antenna assembly is erected when the communication is needed, the navigation resistance of the underwater vehicle is effectively reduced, the antenna assembly is avoided from being hit, and unnecessary energy loss is reduced.

The invention relates to a dredging operation simulation device, which comprises a dredging pool, guide rails and a machine frame, wherein the guide rails are arranged at the two sides of the top of the dredging pool; the machine frame transversely spans above the guide rails positioned at the two sides and can move along the guide rails; a vertical main shaft, a rotating mechanism and an ascending and descending mechanism are arranged on the machine frame; the rotating mechanism can drive the main shaft to rotate; the rotating speed of the rotating mechanism is adjustable; the ascending and descending mechanism can drive the main shaft to ascend and descend; the bottom of the main shaft is connected with a dredging reamer through an angle regulating mechanism; the angle regulating mechanism can drive the dredging reamer to swing around the main shaft, and the swinging speed is adjustable during swinging. The device can be used for simulating the stepping, rotation and ascending and descending during the operation of a dredging boat; the simulation can be realized on different operation modes in practical construction; the dredging operation simulation device is suitable for the dredging of various different soil properties.

The invention discloses a metal button switch. The metal button switch is simple in structure, improves the self-locking performance and waterproof performance, achieves the double-color light emitting function more perfectly, achieves the three-color light emitting function, and improves the installation speed and dismountability. According to the technical scheme, the metal button switch comprises an outer shell, a key and a contact mechanism, wherein the key and the contact mechanism are installed in the outer shell; the key is in linkage connection with the contact mechanism through a pushing device. The metal button switch is characterized in that a base is arranged between the pushing device and the contact mechanism; two weld leg holes used for arrangement of welding legs are formed in two sides of the base; the center of the upper end of the base is provided with a round groove used for placement of an LED lamp; a positioning groove used for placement of a resistor and a square hole opposite to the positioning groove are formed in one side of the upper end of the base.

The invention discloses an automobile hub steering knuckle automatic assembling machine. The automatic assembling machine comprises a steering knuckle feeding conveying line, the steering knuckle feeding conveying line is connected with a pressing device I through a steering knuckle feeding mechanical arm, the pressing device I is connected with a bearing stock bin with a conveying mechanism through a bearing feeding mechanical arm, a steering knuckle, a bearing and a clamp spring are pressed and detected in the pressing device I, the pressing device I is connected with a pressing device II through a conveying mechanical arm, the pressing device II is connected with a hub stock bin with a conveying and stopping mechanism through a hub feeding mechanical arm, the hub pressing, the steeringknuckle assembly hub end surface run-out detection and the steering knuckle assembly marking are completed in the pressing device II, and the pressing device II is connected with a finished product packaging device through a discharging mechanical arm. The assembling machine is high in the integration degree, can carry out assembly line type bearing pressing, the clamp spring pressing and the hubpressing, and meets the requirements of industrial and automatic production.

The invention provides an intelligent well top part packer, comprising an upper joint, a center pipe, a slip cover, a pressure spring, a slip, a cone, an adjusting ring, a rubber drum, a piston, a suspending ring, a pressure separation sleeve, a limiting ring, a deblocking dowel, a limiting sleeve, a locking sleeve, a locking ring, a spring, a pressing cap and a lower joint, wherein the upper part of the center pipe is connected with the upper joint; the lower part of the center pipe is connected with the lower joint; the slip cover, the pressure spring, the slip, the cone, the adjusting ring, the rubber drum, the piston, the locking sleeve and the pressing cap are connected and installed outside the center pipe in sequence; the pressure separation sleeve, the limiting sleeve, the lock ring and the spring are installed under the piston and in the pressing cap; the suspending ring is installed under the piston and on the pressure separation sleeve; the limiting ring is installed under the pressure separation sleeve and on the limiting sleeve; the locking ring and the spring are installed outside the limiting sleeve, in the locking sleeve and on the pressing cap; vertical pipe cable passing holes are formed in the wall of the center pipe. The intelligent well top part packer has the functions of radial self-locking by six equally-divided petals of the locking ring, great self-locking force, large internal passing diameter, high seal intensity, oil layer protection and the like, thereby being widely applied in intelligent well completion tools for oil exploitation.

The invention discloses an electric push rod, and belongs to the technical field of linear transmission. The electric push rod comprises a motor, a transmission worm, a transmission worm gear, a screwrod and a transmission nut, wherein the motor drives the transmission worm to rotate; the transmission worm gear drives the screw rod to rotate; engagement transmission is formed between the transmission worm and the transmission worm gear; the motor comprises an output shaft; the output shaft and the transmission worm are arranged in a splitting manner; and the output shaft and the transmissionworm are in transmission connection through a backstop. The electric push rod disclosed by the invention has the following advantages: vibration and transmission noise at the transmission worm are reduced; and meanwhile, the self-locking capacity of the electric push rod during reverse movement is also improved.

The invention discloses a special five-axis manipulator for casting. The special five-axis manipulator for casting comprises a rack, and further comprises a lifting drive mechanism fixed to the rack,a lifting cross beam connected to the lifting drive mechanism and driven by the lifting drive mechanism to make vertical lifting motion, a turnover cross beam rotationally connected to the lifting cross beam, a turnover drive mechanism used for driving the turnover cross beam to rotate around a rotating shaft of the turnover cross beam, two mechanical arms arranged on the turnover cross beam and rotating along the turnover cross beam, a mold assembly drive mechanism arranged on the turnover cross beam and used for driving at least one of the mechanical arm to move along the turnover cross beamso as to enable the two mechanical arms to get close to each other, die fixing supports rotationally connected to the two mechanical arms correspondingly and used for driving a die to rotate, rotation drive mechanisms arranged on the mechanical arms and used for driving the die fixing supports to rotate around rotating shafts of the die fixing supports, and ejector mechanisms arranged on the diefixing supports and provided with ejector rods capable of moving out of the die fixing supports. The special five-axis manipulator for casting is beneficial for improving the degree of automaton of the casting process and reducing labor input in the casting process.

The invention relates to a sliding yawing braking system for a wind generating set. Upper caliper bodies and lower caliper bodies of yawing calipers are connected onto a cabin bottom plate through high-strength bolts, are positioned and connected with each other through pins and are coupled with a yawing gear ring; an upper friction piece is mounted between the cabin bottom plate and the yawing gear ring; radial friction pieces are mounted between the upper caliper bodies and the yawing gear ring; piston assemblies, disc spring groups, guide rods and adjusting nuts are mounted in mounting holes of the lower caliper bodies; lower friction pieces are mounted between the piston assemblies and the yawing gear ring; the piston assemblies and the adjusting nuts are connected through the guide rods and the disc spring groups; and the disc spring groups are compressed to produce axial force through adjustment of the adjusting nuts, so that the lower friction pieces press the yawing gear ring tightly and produce friction torque together with the upper friction piece. The system can well keep the damping effect in yawing and non-yawing states of the wind generating set. The whole system supports the whole wind generating set and prevents the wind generating set from falling down from a tower tube.

The invention relates to a transmission mechanism of an integral type pull-rope type electronic parking brake, comprising a motor. The motor is arranged on a motor installing cover which carries out matching and positioning with an installing shell of a speed reducing mechanism by via an inner ring surface of the motor installing cover; the motor is connected with a motor gear shaft which is matched with two speed reducing gears by a gear; the two speed reducing gears are connected by a spline and are fixed with two speed reducing gear shafts; the two speed reducing gear shafts are matched with four speed reducing gears which are connected by splines and are fixed with a screw shaft; the right end of the screw shaft is connected with a special nut by saw-toothed inner threads; the right end of the special nut is connected with a pull rope head connector by threads; and the outer assembling surface of the special nut is matched with an inner hole of the pull rope limiting mechanism by clearance fit. In the transmission mechanism, the motor is used for replacing mechanical operation, faster and more convenient parking braking is provided, and automatic control is easily realized.

The invention discloses a multi-way valve for a tractor hydraulic lifter. The multi-way valve for the tractor hydraulic lifter comprises a valve body, wherein an oil inlet cavity, an oil channel A, an oil channel B, an oil outlet cavity A, an oil outlet cavity B, an oil return cavity A, an oil return cavity B and a valve rod are arranged in the valve body, and the valve rod is in hermetic and sliding connection with the valve body; the valve rod is provided with annular grooves corresponding to the oil channel A, the oil channel B, the oil outlet cavity A, the oil outlet cavity B, the oil return cavity A and the oil return cavity B, an operating end of the valve rod is connected with a handle, and a pressurization cavity is further formed in the valve body; when the valve rod slides to the direction of the oil outlet cavity B, the oil channel A communicates with the oil outlet cavity A, and the oil channel B communicates with the pressurization cavity; a hydraulic reset hole is formedin the interior of the valve rod in the axial direction, an inlet end of the hydraulic reset hole communicates with the pressurization cavity, an outlet end of the hydraulic reset hole faces a non-operating end of the valve rod, and a reset device is arranged at the non-operating end of the valve rod. According to the multi-way valve for the tractor hydraulic lifter, automatic reset function is realized in the descending state and the lifting state of an agricultural implement, the valve rod does not need to be manually reset manually, and the operation is convenient.

A double-circular-disc ring lock scaffold is characterized in that double circular discs are welded to a vertical rod at equal intervals, that is, each scaffold joint comprises the two circular discs,a certain distance is maintained between every two circular discs, end buckle joints of an inclined rod and a cross rod are made of steel plate bent pieces, the end buckle joints are welded to the cross rod and the inclined rod and connected to the double circular discs in a buckled mode when the scaffold is erected, and the end buckle joints are tightly connected with the double circular discs by using wedging plug pins. The double-circular-disc ring lock scaffold has the advantages that the stability is high, the self-locking performance is good, the bearing capacity is high, and the manufacturing technology of components is simple.

The invention discloses a self-locking reverse-spitting-prevention bridge-type concentric adjustable water regulator for a separate-layer injection well. The self-locking reverse-spitting-prevention bridge-type concentric adjustable water regulator comprises a fixed valve of which the upper connector is connected through threads and a body; the fixed valve is connected with a sliding valve sleeve in a dynamic sealing manner; a big connection sleeve is connected with the body; a big compressed spring is arranged between the sliding valve sleeve and the big connection sleeve; a lower connector is connected with the lower part of the big connection sleeve; a rotation-prevention sleeve is connected with the inner periphery of the lower connector; a rotary core is arranged on the inner periphery of the body; a positioning sleeve is connected with the rotary core; the lower part of the rotary core is connected with the body in a sliding manner; a baffle sleeve is arranged on the inner periphery of the middle and lower part of the body; a small compressed spring is arranged between a fixed threaded sleeve and the baffle sleeve; a measurement and adjustment instrument clamping groove is formed in the upper end part of the positioning sleeve; a semicircular positioning groove is formed in the outer periphery of the lower part of the measurement and adjustment instrument clamping groove, and is matched with a positioning threaded plug which is correspondingly arranged on the upper connector for positioning; a water outlet is formed in the middle part of the body; a water nozzle is arranged on the part, corresponding to the water outlet of the body of the water regulator, of the middle part of the rotary core; and the outlet of the water outlet is communicated with the lower end of the sliding valve sleeve.

An actuator with self-locking assist device comprises an actuator and a self-locking assist device, wherein the self-locking assist device is disposed at one end of the actuator, and the friction force between the self-locking assist device and the actuator is used to improve the self-locking capability of the actuator, thus preventing the uncontrollable movement of the actuator caused by the influence of the load carried.

The invention discloses a self-locking device for a linear actuator, and belongs to the field of linear actuation equipment. The self-locking device includes a one-way bearing and a friction collar, and further includes a friction member for being matched with the friction collar. The one-way bearing includes an inner ring and an outer ring, and the inner ring is used for sleeving a rotary screw rod of the linear actuator. The friction collar is connected with the outer ring. When the rotary screw rod rotates in the forward direction, the outer ring does not rotate. When the rotary screw rod rotates in the reverse direction, the outer ring, the inner ring and the friction collar rotate synchronously, and the friction collar is in contact with the friction member to generate friction force.The invention further discloses the linear actuator adopting the self-locking device. The self-locking device for the linear actuator has the advantage that the self-locking ability of the linear actuator can be increased.

The invention belongs to the technical field of forestry felling, and particularly relates to a directional toppling auxiliary device for forestry cedar felling. The directional toppling auxiliary device aims at solving the problem that lumberjacks are injured inattentively due to the fact that fixing devices inserted into the ground can be suddenly pulled up once trees fall down due to the fact that one supporting frame is arranged in an existing lumbering auxiliary toppling device mostly and the bottom end of the supporting frame is inserted into soil. According to the scheme, the directional toppling auxiliary device comprises a timber pile nailed near the root of one side of a tree to be fallen and for preventing toppling, a main barrel with an upward opening and of a cuboid structurein the overall appearance, a hoop I and a hoop II, wherein the hoop I and the hoop II are hinged together. According to the directional toppling auxiliary device for forestry cedar felling, when the tree needs to be jacked and supported in the using process, firstly, only a tree trunk needs to be held through the hoop I and the hoop II, then the tree trunk can be propped against only by adjustinga transmission screw rod, and at the moment that the tree trunk is cut, a propping block, the hoop I and the hoop II can be automatically separated from a supporting device, so that the supporting device is prevented from being pulled away together, and the safety of a device is improved.

The invention relates to a novel underwater numerical control nozzle. The novel underwater numerical control nozzle comprises a motor, wherein the motor is fixedly connected with a planet gear speed reducer; an output end of the planet gear speed reducer is connected with a first input end of a connecting disc; an output end of the connecting disc is connected with a first port of a three-way joint; a transmission shaft is inserted in the three-way joint; and an output end of the transmission shaft is fixedly connected to the center of a water passing support ring, and an input end is connected with an output shaft of the planet gear speed reducer through a coupling. A first port of the three-way joint and the transmission shaft realize sealing connection through a rubber sealing ring and a skeleton sealing ring. A waterproof sealing cover is arranged outside the planet gear speed reducer. The transmission shaft is axially positioned through a bearing and a hoop. The novel underwater numerical control nozzle is high in transmission efficiency, small in equipment volume, low in cost, excellent in waterproof sealing performance and widely applied to various fountain devices.

The invention discloses a waterproof rocker switch with reliable electric contact, mainly solving the problems of poor electric connecting property of the existing rocker switch and small self-lock force of a button. The waterproof rocker switch is characterized in that a tube cavity (9) in which a spring (7) is embedded is arranged at the upper part of a slide sleeve (8); the lower end of the slide sleeve (8) is provided with a steel ball (10) capable of flexibly rotating; and the steel ball (10) contacts the upper end of a contact bridge (4). The waterproof rocker switch with reliable electric contact has the characteristics of good electric connecting property and large self-lock force of the button.

The invention discloses a stacked gear structure with side clearance removal through elasticity, which aims to provide a gear structure, which has the advantages that: side clearance in gear transmission can be removed, cold / heat stress generated internally can be removed, the service life of gears is improved, and the noise generated when gears are meshed is reduced. A conical surface is arranged on a main gear; a gear with side clearance removal is connected with the main gear in a self-locking way through a taper hole matched with the conical surface; the outer side of the conical surface on the main gear is in thread connection with a compression nut of the gear with side clearance removal; positioning pin holes forming positioning zero points in peripheral directions of the main gear and the gear with side clearance removal are arranged on the main gear and the gear with side clearance removal; an adjusting pin is arranged on the main gear; an arc-shaped adjusting slot hole is arranged at a position on the gear with side clearance removal, corresponding to the adjusting pin; adjusting brackets are respectively arranged on two sides of the arc-shaped adjusting slot hole; each adjusting bracket is provided with an adjusting screw vertical to an axial line of the adjusting pin; and weight balancing blocks are respectively arranged on positions on the gear with side clearance removal, which respectively have intervals of 180 degrees with each adjusting bracket.

An emulsion pump with closure between a pressing head and a locking cover improved comprises the pressing head, the locking cover, a screw thread, a body, a main column, an auxiliary column, a piston, a spring and a glass ball. The pressing head comprises a base, an emulsion outlet nozzle and an emulsion inlet channel, and the emulsion inlet channel is communicated with the emulsion outlet nozzle; the locking cover comprises a guiding sleeve in the center and an internal-thread nipple surrounding the guiding sleeve; the upper end of the body penetrate through the screw thread to be in screw fit with the internal-thread nipple of the locking cover; the emulsion inlet channel of the pressing head is communicated with the upper end of the main column, the pressing head is detachably connected with the locking cover, and a locking device is arranged on the pressing head; and a one-head internal thread is arranged on the guiding sleeve of the locking cover, and the locking device is in screw fit with the guiding sleeve. By means of the structure, a one-head external thread of the emulsion inlet channel is in screw fit with the one-head internal thread of the guiding sleeve of the locking cover. Thus, the self locking performance is enhanced, the unlocking distance is increased, the emulsion pump is prevented from being opened at will, and the safety is enhanced.

The invention discloses a computer display base with the elevation angle convenient to adjust. The computer display base comprises a display screen body and a supporting seat in a C-shaped structure;grooved sliding rails are welded to the two closing ends of the inner wall of the concave side of the supporting seat, wherein openings of the grooved sliding rails are opposite to and parallel to each other, the same counterweight block is slidably connected between the two grooved sliding rails, and the middle of the supporting seat is in screwed connection with a transmission screw; a rectangular sunken groove is formed in the middle of the upper surface of the supporting seat, screw holes are formed in the positions, close to the four corners, of the groove bottom of the rectangular sunkengroove, and a square pipe stand column is fixed in the rectangular sunken groove through a bolt; and an adjusting box in a cylindrical structure is welded to the top end of the square pipe stand column, wherein an cavity is formed in the adjusting box, and a sunken hole and a through hole are formed in the inner walls of the two opposite sides of the adjusting box. According to the computer display base with the elevation angle convenient to adjust, a display screen at the top end of the supporting seat can still enable the center of the device to be located within the supporting surface of the supporting seat after being rotated and adjusted by adjusting the counterweight block, the center of gravity of the device can be reduced, and the stability performance of the device is improved.

A tapered internal thread and threaded column connecting structure comprises an external thread and an internal thread in threaded connection with each other. The external thread is arranged on a column-shaped body, and the internal thread is arranged in a connecting hole. The internal thread comprises an inside helical surface and a helical end surface. A shape of the inside helical surface is the same as a shape of a lateral surface of a solid of revolution formed by using a right trapezoid as a generatrix, rotating uniformly around a cathetus of the right trapezoid which is coincident with a center axis of the connection hole, and synchronously, axially and uniformly moving the right trapezoid along the center axis of the connection hole.

A head rest of hospital bed for medical diagnosis is composed of a socket fixed to bed board, plug plate inserted in the said socket, head hood, connector fixed to plug plate, regulating screw, axle,locating screw and regulating pad at the connection position between head hood and axle. Its vertical height and rotary angle can be regulated to optimal state. Its advantages are correct location, high self-locking power and high rigidity.

The invention relates to an adjusting device, in particular to a wireless remote control electric six-shaft adjusting platform applied to a DLP large-screen splicing system. The wireless remote control electric six-shaft adjusting platform comprises a supporting plate, a first adjusting plate, a fixing plate, a second adjusting plate and a bottom plate which are sequentially connected from top to bottom in the vertical direction, wherein the supporting plate is provided with an L-type support, the first adjusting plate is provided with two shafts in the horizontal transverse direction, a vertical support is arranged on the upper surface of the fixing plate, three vertical threaded rods are arranged on the lower surface of the fixing plate, the second adjusting plate is provided with four shafts in the horizontal transverse direction, and a horizontal longitudinal threaded rod is fixed to the bottom plate. One ends of the six shafts of the first adjusting plate and the second adjusting plate are connected with an output shaft of a wireless remote control motor. According to the adjusting device, a remote control unit is used for controlling the motor to adjust the six shafts to adjust the platform, adjusting is easy and convenient, and time and labor are saved; after adjusting is finished, by means of a locking device, displacement situations such as deflection, loosening and sinking are avoided permanently; the adjusting device is lighter, efficient and high in adjusting precision, and saves labor, and a noise-free adjusting mode is adopted; the adjusting efficiency is high, and the production schedule is shortened.