121 results about "Rack unit" patented technology

The invention discloses an electric wire and cable copper wire stranding machine, and belongs to the technical field of copper wire stranding, the electric wire and cable copper wire stranding machine comprises a rack, a winding mechanism used for winding a stranded copper wire is assembled on the rack, a material rack unit is assembled on one side, far away from the winding mechanism, of the rack, the material rack unit comprises a shaft rod installed in a first bearing seat, and an installation disc is assembled on the shaft rod; a material frame is inserted into the mounting disc by forming an inserting groove, and a driving piece is assembled at one end of the shaft rod; through the arrangement of the anti-loosening unit and the stranded wire guide frame, the rotating pay-off barrel drives the extending frame through the moving unit to push the rolling shaft to be attached to a copper wire in real time in the stranding process, so that no matter what degree the pay-off is achieved, the rolling shaft can always apply tension to the wire outlet end of the copper wire, the copper wire is kept in tension, and the copper wire is prevented from being loosened. The stranding machine is simple in structure and convenient to use, the loosening condition along with the increase of the paying-off time is avoided, the loosening condition of the stranded wire is avoided, the quality of the stranded wire is ensured, and the risk of increasing the fault of the stranding machine is avoided.

The invention relates to a three-dimensional storage system capable of rapidly taking and placing material boxes. The three-dimensional storage system comprises a modularized extensible vertical warehouse, a lifting portal frame and a cargo carrying table device arranged on a movable support. The modular extensible three-dimensional warehouse is characterized by comprising at least two three-dimensional warehouse frame bodies, and each three-dimensional warehouse frame body is formed by stacking at least two standardized material frame units in the vertical direction through detachable connecting structures; the vertical warehouse frame bodies are arranged in parallel in the horizontal direction; the at least one top beam is transversely erected on the tops of all the vertical warehouse frame bodies which are arranged in parallel; the inserting structure is arranged at the bottom of the top beam; wherein the top beam is detachably and rigidly connected with the top of each three-dimensional warehouse frame body in an inserting manner through the inserting structure of the top beam, so that all the three-dimensional warehouse frame bodies form an integral stable structure; the lifting portal frame is transversely and movably arranged on the top beam, and the cargo carrying table device is movably arranged on the lifting portal frame and used for achieving two-dimensional movement of the cargo carrying table device in the vertical plane. The scheme has the advantages of stable structure, flexible expansion and convenient installation.

The invention discloses a sorting workbench and a sorting system.The sorting workbench comprises a rack unit, a reciprocating power unit and a reciprocating transmission unit, and the reciprocating power unit is in transmission connection with the reciprocating transmission unit and drives the reciprocating transmission unit to reciprocate; between the first reciprocating position and the second reciprocating position, the reciprocating transmission unit is in transmission connection with a material box pushing device of the rack unit and drives the material box pushing device to do reciprocating translation motion along the material box translation channel; the reciprocating transmission unit is in transmission connection with the two lifting devices at the same time and drives the two lifting devices to conduct synchronous reverse lifting motion matched with reciprocating translation along the two lifting channels. Namely, according to the sorting workbench, the workbins are separated from the workbin carrying robots, the workbins can be directly queued to wait, and the workbin carrying robots are released, so that the use number of the workbin carrying robots can be reduced, the utilization rate or turnover rate of the workbin carrying robots is increased, and the cost is saved.

The invention discloses a paper tube polishing device and a polishing method thereof, and belongs to the technical field of paper tube polishing. The paper tube polishing device comprises a rack unit, a plurality of polishing units and a positioning unit; the plurality of polishing units and the positioning unit are mounted on the rack unit; the polishing unit comprises a driving part, a first polishing part and a second polishing part; the driving part drives the first polishing part and the second polishing part to get close to or away from each other; in the third direction, the positioning unit positions and clamps the paper tube, the driving part drives the first polishing part and the second polishing part to get close to each other, and the first polishing part and the second polishing part polish the two ends of the paper tube to obtain the polished paper tube; the driving part drives the first polishing part and the second polishing part to be far away from each other, and the first polishing part and the second polishing part are far away from the polished paper tube; and in the third direction, the positioning unit loosens the polished paper tube. The present application reduces polishing of a plurality of paper tubes.

The invention discloses a coal mine intrinsic safety variable structure open space robot catastrophe detection system, which belongs to the technical field of catastrophe robots and comprises a coal mine intrinsic safety variable structure open space robot consisting of a rack unit, a rotor wing mechanism, a battery unit, a control unit, an airborne sensor unit and the like. The invention further discloses a coal mine intrinsic safety variable structure open space robot catastrophe detection method. The method comprises the steps of collecting underground coal mine disaster photos, making a data set, building a YOLO10m network model and building an underground coal mine catastrophe detection system. And finally, a YOLO10m algorithm is improved, a TSample module is constructed, an up-sampling module in the neck network is replaced, the number of model parameters is reduced, the operation load is reduced, and a low-illumination loss function is provided to optimize the detection precision of the network on the underground coal mine catastrophe, so that the underground coal mine fire, flood and roof catastrophe are detected in the underground coal mine low-illumination environment.

The invention relates to an aluminum coil three-dimensional warehousing system and a dispatching control method thereof in the technical field of metal manufacturing and storage, and the warehousing system comprises a stacking machine, a plurality of three-dimensional storage rack units correspondingly located in a high-temperature area, a medium-temperature area and a normal-temperature area, and a ventilation cooling device for controlling the temperature of aluminum coil bodies in the three-dimensional storage rack units. The intelligent control center can control the stacking machine to transfer, load and unload materials to all the temperature area three-dimensional storage rack units according to temperature control analysis and inventory states; the dispatching control method mainly comprises the steps that according to the warehousing temperature and the inventory state of the aluminum coils, the aluminum coils are conveyed into the vacant goods positions of the corresponding temperature areas, and transfer of all the temperature areas is conducted according to the cooling condition; according to the three-dimensional warehousing system and the dispatching control method thereof, the efficiency can be improved in the aluminum coil material storage and cooling links, and energy consumption and space occupation are reduced.

According to the hydraulic balance hoisting platform and the construction method thereof, the problems of low construction efficiency and poor safety existing in an existing method for installing an external hanging rack unit by matching a portal frame installed on a steel platform with a tower crane are solved. The device comprises a first frame platform and a second frame platform which are arranged up and down and connected, a hydraulic oil cylinder and a balancing weight are arranged along the axis of the first frame platform and connected, the other end of the hydraulic oil cylinder is connected to one side of the first frame platform, the balancing weight is connected to the other side of the first frame platform in a buckled mode, and the other end of the hydraulic oil cylinder is connected with the balancing weight; the method comprises the steps that a hydraulic balance hoisting platform is horizontally hoisted, an outer hanging frame unit is hung on a second frame platform, and a leveling sensor control set controls a hydraulic oil cylinder to stretch out and push a balancing weight to move horizontally along a first frame platform, so that the hoisting platform can keep overall balance in the state that the outer hanging frame unit is hung; and the hoisting platform horizontally extends below the platform beam at the top of the steel platform, and the outer hanging rack unit is installed in place.

The invention discloses a double-gear rack backlash eliminating structure and a method thereof.The double-gear rack backlash eliminating structure comprises an auxiliary gear capable of being in clearance fit with a reverse shaft in the double-gear rack structure and further comprises a reverse gear capable of being in interference fit with the reverse shaft, shaft holes of the reverse gear and the auxiliary gear are coaxially arranged in an overlapped mode, and the gear parameters of the reverse gear and the auxiliary gear are the same. Both the reverse gear and the auxiliary gear can be engaged with the rack unit to adjust the return difference between the reverse gear and the auxiliary gear and the rack unit; the edges of the reverse gear and the auxiliary gear are connected together through a pressing unit; the rack unit comprises a first rack and a second rack, the first rack and the second rack are connected together through a plurality of fastening bolts, and the first tooth top edge of the first rack is flush with the second tooth top edge of the second rack; the pressing unit comprises a first hollow disc and a second hollow disc. The problem that in the prior art, a transmission backlash between a bidirectional gear and a rack is not easy to adjust accurately is solved.

The invention provides a novel midway discharging device for a conveying belt, and relates to the technical field of midway discharging of conveying belts. The device comprises a self-walking unit, a gradually-changing rack unit, a material distributing unit and an executing unit, the gradually-changing rack unit is connected to the self-walking unit and is in transmission connection with a conveying belt, and the height of the conveying belt in transmission in the corresponding interval of the gradually-changing rack unit can be increased in the advancing direction of the self-walking unit; the material distribution unit is movably connected with the self-walking unit and is in driving connection with the execution unit connected to the self-walking unit, the material distribution unit is provided with a main channel and a material distribution channel, and the execution unit can drive the main channel and the material distribution channel to be switched and moved to the position below the high-position end of the gradual change rack unit. Each unit does not generate contact pressure on the conveying belt, abrasion and scratching of the surface of the conveying belt are effectively reduced, the device is more concise in overall structure, high in reliability and more convenient to install and maintain, the labor intensity of field personnel can be reduced, and the maintenance cost is reduced.

The utility model provides a mould storage rack unit with automatically-drawn storage plates, which comprises a rack body and the storage plates, the rack body comprises rack legs, the rack body is rectangular, each rack leg is arranged at one corner of the rectangle, a support plate is arranged at the upper part between two left and right adjacent rack legs, a storage plate driving device is arranged at the upper parts of the two support plates, and the storage plates are arranged on the storage plate driving device. The storage plate driving device comprises two linear sliding modules fixed to the supporting plate, each linear sliding module comprises a base, the bottom of each base is fixedly connected with the transverse plate, a ball screw is connected into each base, each ball screw is in threaded connection with a nut, each nut is connected with a nut seat, each nut seat is fixedly connected with a sliding block, and each sliding block is in threaded connection with the transverse plate. And a bottom plate of the storage plate is fixedly connected with the sliding block. According to the mold storage device, automatic storage and release of a mold can be achieved, the storage plate can obtain enough supporting force through the design, the bearing capacity of the storage plate is higher, and the stability of the storage plate during sliding can be guaranteed.

The present invention discloses a system and method for testing the waterproof performance of a deformation joint waterproof structure. The system comprises a main structure having a hollow cavity disposed therein, the deformation joint waterproof structure and a water inlet and outlet disposed thereon; a pressure rack unit disposed outside the main structure and configured to apply axial pressure to the main structure; a pressure control unit comprising a pressure pump that injects water into the hollow cavity through the water inlet and outlet; and a processing unit comprising electrodes disposed on the main structure and a data processing device connected to the electrodes. The present invention can test the effect of axial force on the waterproof performance of the main structure, reducing test complexity and improving test accuracy.

The present application belongs to the technical field of towel rack, especially to a kind of intelligent rotary electric heating towel rack and control method thereof, wherein the electric heating towel rack includes hanging rack unit, the hanging rack unit includes: base;Shell, it is sleeved on the base, and the shell is slidably arranged along the direction close to or away from base, and the shell and the base are also rotationally arranged;Towel rod, it is arranged on the shell, heating unit is built-in in the towel rod, for heating the towel hung on the towel rod;Wherein, it further includes: power component, for driving the shell to make linear motion along the direction close to or away from base, and driving the shell to make rotary motion on the base;And control unit, for controlling the operating state of power component.Power component is controlled to operate by control unit, so that the shell can automatically make linear motion and rotary motion, to realize intelligent control.

The application discloses a collision-preventing sample rack transportation method, and judges whether there is an obstacle in a rack channel before driving a rack unit to move along the rack channel; if yes, an alarm is given and the rack unit is kept in a stop state; if not, the rack unit is driven to move along the rack channel to a specified position. The application further discloses a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the steps of the collision-preventing sample rack transportation method. The collision-preventing sample rack transportation method can detect whether there is an obstacle in the rack channel before driving the rack unit to move along the rack channel each time, and the rack unit can be driven to move only when no obstacle is detected in the rack channel, so that the rack unit cannot collide with other structures, and the operation safety is ensured.

The utility model discloses a folding rack, which comprises a movable base, a folding mechanism and a folding mechanism, wherein the movable base is used for driving the whole device to move; the multiple rack units are stacked at the top end of the movable base and used for storing equipment and tools needing to be stored; the protective connecting cover is fixedly mounted at the top end of the rack unit and used for sealing the top space of the rack unit and protecting stored equipment and tools; the rack unit comprises a bearing bottom plate, a foldable rubber sleeve and a top protection frame plate, the top protection frame plate is fixedly connected to the top end of the foldable rubber sleeve, and the foldable rubber sleeve is fixedly connected to the upper surface of the bearing bottom plate. The foldable rubber sleeve and the bidirectional threaded rod control mechanism are adopted, so that the height of the rack unit is flexibly adjusted, and the storage requirements of equipment with different sizes are met; the bottom supporting arms are driven to move through the two-way threaded rods, the top protection frame plate is driven to ascend and descend through the supporting connecting arms, a stable telescopic frame structure is formed, and the space utilization rate is increased.

A double-layer cloth vertical belt filter press comprises a rack unit, a filter pressing unit, a driving unit and a scraping device, the filter pressing unit comprises a hydraulic system, a bottom pressure bearing platform, a top pressure applying platform, an oil cylinder, a lower layer filter belt, an upper layer filter belt and a middle layer filter belt, and the bottom pressure bearing platform is fixed on the rack unit; a cylinder end flange of the oil cylinder is connected to a top cross beam of the bottom pressure-bearing platform, a rod end flange of the oil cylinder is connected to the upper surface of the top pressure-applying platform, the lower-layer filter belt, the upper-layer filter belt and the middle-layer filter belt are arranged between the bottom pressure-bearing platform and the top pressure-applying platform, the cloth is divided into upper-layer cloth and bottom-layer cloth, the upper-layer cloth is located between the middle-layer filter belt and the upper-layer filter belt, and the lower-layer cloth is located between the bottom-layer cloth and the middle-layer filter belt. The bottom-layer cloth is positioned between the lower-layer filter belt and the middle-layer filter belt; according to the utility model, a plurality of groups of oil cylinders are added to apply pressure, the dehydration pressure and the pressure maintaining time can be accurately controlled so as to achieve an expected effect, and the oil cylinders vertically apply pressure to the filter belt, so that tearing and stretching force cannot be generated on the filter belt.

The invention relates to the technical field of automatic sock production equipment, in particular to a yarn pretreatment monitoring system for preventing yarn breakage for sock production and a use method thereof.The yarn pretreatment monitoring system comprises a rack body and is characterized in that an annular supporting frame is arranged on one side of the top of the rack body, and a yarn supply system is arranged on the annular supporting frame; a cross connecting arm is arranged on one side of the inner wall of the annular supporting frame, a center supporting shaft is arranged at one end of the bottom of the cross connecting arm, a thread stand unit is arranged on the upper portion of the center supporting shaft, and a yarn detection and weft storage system is arranged in the middle of the center supporting shaft. A yarn lubrication monitoring unit is arranged below the yarn detection and weft storage system, and a knitting execution unit is arranged below the yarn lubrication monitoring unit; a control unit is arranged on one side of the knitting execution unit; the yarn supply unit, the thread stand guide unit, the weft storage detection unit, the lubrication monitoring unit and the knitting execution unit are arranged on the rack in a layered mode, and continuous pretreatment is achieved; the system can be configured with multi-color and multi-material yarns, and diversified requirements are met; the coil holder guides and normalizes the path and prevents winding and friction; the detection weft storage unit monitors broken yarns in real time, provides reserve and stabilizes tension; the lubricating unit is visual and maintainable, oil is evenly applied, and real-time feedback is achieved; the control unit is centrally managed and is safe and reliable.

This application relates to a warehousing robot and a warehousing system. The warehousing robot includes: a mobile base configured to drive the warehousing robot to move on a support surface; a handling device configured to retrieve a storage object from a target storage location of a rack unit or place a storage object on a target storage location; and a climbing assembly including a climbing module and a climbing driving device, where the climbing module includes an upright frame and a first synchronization belt, the upright frame is arranged on the mobile base, the first synchronization belt is arranged on the upright frame and is rotatable relative to the upright frame, the climbing driving device is configured to drive the first synchronization belt to rotate, the first synchronization belt is provided with a plurality of protrusions, and the protrusions are arranged at intervals along an outer periphery of the first synchronization belt, and can abut against the rack unit, to drive the warehousing robot to ascend or descend along with rotation of the first synchronization belt along a height direction of the rack unit. The solutions provided in this application can resolve a problem that when the warehousing robot climbs and is docked with the rack, a dislocation easily occurs when a chain wheel or a gear meshes with a chain or a gear rack.

The utility model discloses a foldable iron art storage rack which comprises a plurality of storage rack units which are sequentially and fixedly connected from top to bottom, each storage rack unit comprises a rectangular storage plate and four supporting rods, the four supporting rods are rotationally arranged at the four right-angle positions of the storage plate respectively, and the storage rack units are connected with the storage plate through the supporting rods. The supporting rods are provided with fixing mechanisms used for keeping the supporting rods and the storage plates in a perpendicular state, and the supporting rods in the adjacent storage rack units are fixedly connected in an inserted mode. According to the utility model, the plurality of storage room units are inserted and fixed to realize installation, the supporting rods and the storage plates in the storage rack units are rotationally connected, and the supporting rods and the storage plates cannot rotate through the fixing mechanisms, so that the tedious degree of installation of the storage rack is reduced.

An application-specified adapter-aligned enclosure to be placed in a server cabinet has a hole in at least one of a top or bottom of the enclosure. A plurality of fiber optic connectors are distributed on a front face of the enclosure such that the connectors are arranged in a plurality of groups which are vertically arranged in a specific manner related to at least one of a rack unit of a cabinet or an equipment port interval.

The present invention discloses a tail paper cutting and turning roll machine for a paper machine, which includes a tail paper cutting unit, an automatic roll turning unit, a movable paper storage rack unit, and an automatic guiding unit: the tail paper cutting unit, the automatic roll turning unit, and the movable paper storage rack unit are installed on a frame; one end of the tail paper cutting unit is communicated with one end of the automatic roll turning unit; the movable paper storage rack unit is communicated with the end of the automatic roll turning unit far from the tail paper cutting unit; the automatic guiding unit is matched with the movable paper storage rack unit; the paper roll rolls from the tail paper cutting unit to the automatic roll turning unit and is driven to the movable paper storage rack unit by the automatic roll turning unit; the automatic guiding unit transports the movable paper storage rack unit to a preset position; wherein, the to-be-cut tail paper roll is sent to the position cutting unit through an intelligent loading and transportation system. The present invention solves the problems of high labor consumption, high cost and low efficiency in tail paper cutting, and achieves the technical effects of improving efficiency, reducing labor input and production cost.

The substrate processing apparatus of the present invention includes: a workbench module including a first region and a second region adjacent to the first region, wherein a rack unit having a length in a first direction is provided in the first region; an isolation unit disposed at the lower part of the workbench module; a frame unit disposed at the lower part of the isolation unit; and a foot unit disposed at the lower part of the frame unit, wherein the frame unit includes: a horizontal frame having a first frame provided parallel to the floor surface and along the first direction, and a second frame provided parallel to the floor surface and along a second direction perpendicular to the first direction; the foot unit includes: a plurality of first feet disposed on the second frame, adjacent to each other in the first region direction with respect to the first frame and eccentrically disposed in relation to the second region direction compared to the second region direction.

A fiber distribution unit and system and method for high-density cable routing are provided. The unit, system, and method include positioning a fiber distribution unit alongside a computing equipment at a rack including a plurality of fiber ports. The fiber distribution unit includes a plurality of fiber connection adapters. Positioning the fiber distribution unit includes forming a plurality of sections including fiber connection adapters of the pair of fiber distribution units aligned along a width direction with the fiber ports of the computing equipment. Each section extends along a single rack unit. The system includes a 1:1 ratio of fiber ports to fiber connection adapters at the plurality of sections.

The utility model discloses a multi-structure compatible material cutting device which comprises a machine frame unit, a material pressing unit, a shearing unit and a collecting unit, and the machine frame unit comprises a machine frame, an inclined plate and a side supporting plate. The material pressing unit comprises a material pressing air cylinder, a material pressing air cylinder fixing plate, a material pressing plate, a driving knife rest, a driven knife rest, a driven knife, a driving knife A, a driving knife B, a driving knife C, a driving knife D and a side supporting column, the shearing unit comprises a material cutting air cylinder, a fixing base, a connecting block, a limiting strip and a heightening column, and the collecting unit comprises a workbench, an optical grating, a waste box and a waste inclined plate. The material cutting device is used for solving the problem of compatibility during material cutting of label products with different structures, the material cutting compatibility can be remarkably improved, workers are liberated from manual material cutting, and the increasing productivity requirement is met.

The utility model provides a kitchen semi-finished product goods shelf capable of dripping water and guiding flow, and relates to the technical field of kitchen goods shelves. The goods shelf units are supported on the supporting legs and arranged in the vertical direction, each goods shelf unit comprises a goods shelf frame, two side baffles, a deck plate and a front baffle, the two side baffles are arranged on the inner side face of the goods shelf frame, the front baffle is connected with the goods shelf frame in a vertically movable mode, and the deck plate is arranged on the front baffle. An elastic piece is arranged between the front baffle and the goods shelf frame. The utility model has the beneficial effects that by arranging the deck plate with the adjustable inclination angle, the adjustment requirements of different inclined slopes can be met, and the use flexibility and practicability are greatly improved; the front baffle is pushed by the elastic piece to tightly abut against the surface of the countertop, gap water leakage generated after adjustment is effectively prevented, the inclination gradient of the countertop is adjusted easily and conveniently through the arrangement of the lifting mechanism, water diversion is facilitated, and therefore a kitchen is kept clean and sanitary.

Embodiments of the present application provide a cabinet, a method for identifying the position of an electronic device, and an electronic device. The cabinet includes: a cabinet body, the cabinet body includes a target component that penetrates all rack units, and one electronic device is installed in each rack unit; a plurality of first sensing mechanisms arranged on the target component; a plurality of second sensing mechanisms respectively arranged on the chassis of different electronic devices; a monitoring system that determines a target code based on N target sensing states between the second sensing mechanism on the target electronic device and the corresponding first sensing mechanism, and determines the position of the rack unit associated with the target code as the position of the rack unit of the target electronic device. Through the present application, the problem in the related art that due to differences in the architectures of different cabinets, adding additional positioning devices requires complex processing procedures, resulting in poor flexibility in positioning devices in the cabinet is solved, and thus the effect of improving the flexibility of positioning devices in the cabinet is achieved.

The invention relates to the technical field of laser pipe cutting machines, in particular to a feeding frame which comprises a first driving device, a second driving device, a third driving device and at least three sets of material frame units arranged at intervals, and each set of material frame unit comprises a rack, a guide frame, a material blocking assembly, a lifting assembly, a material pushing assembly and a material stacking assembly. The material stacking assembly is used for stacking the pipes and transferring the pipes to the material distributing station. The lifting assembly is used for lifting the pipes in the first material distributing station; the material pushing assembly is used for pushing off the pipes stacked in the first material distributing station. The material blocking assembly is arranged on the second material distributing station in a sliding mode and used for blocking the pipes on the second material distributing station and releasing the pipes to the feeding station. Through cooperation of the lifting assembly, the material pushing assembly and the material blocking assembly, the pipes can be arranged step by step and accurately controlled, so that only one pipe is conveyed to a feeding station each time, the feeding accuracy is guaranteed, and a guarantee is provided for follow-up machining equipment to accurately grab the pipes for machining.

A fiber distribution unit and system and method for high-density cable routing are provided. The unit, system, and method include positioning a fiber distribution unit alongside a computing equipment at a rack including a plurality of fiber ports. The fiber distribution unit includes a plurality of fiber connection adapters. Positioning the fiber distribution unit includes forming a plurality of sections including fiber connection adapters of the pair of fiber distribution units aligned along a width direction with the fiber ports of the computing equipment. Each section extends along a single rack unit. The system includes a 1:1 ratio of fiber ports to fiber connection adapters at the plurality of sections.

The utility model discloses a specimen making table, which relates to the technical field of scientific teaching and comprises a cabinet body unit, a rack unit, a making unit arranged on the inner side of the rack unit and a lifting unit arranged in the cabinet body unit, the manufacturing unit comprises a manufacturing table fixedly connected to the inner side wall of the rack unit and a drying box fixedly connected to the bottom of the manufacturing table and used for drying specimens. The lifting unit comprises two vertical sliding rods fixedly connected to the interior of the cabinet body unit and a lifting plate arranged on the outer surfaces of the two vertical sliding rods in a sleeving mode and used for supporting the rack unit. According to the specimen making table, the structure is provided with a drying structure, a specimen can be conveniently and rapidly dried, the specimen making efficiency can be improved, the making table has a storage function, the situation that dust falls when the making table is not used and influences next use can be avoided, cleaning is not needed before each time of use, manpower and time are reduced, and the working efficiency is improved. And the practicability is good.