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96results about "Different width rail tracks" patented technology
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A narrow-gauge frame structure for mining with adjustable track gauge
The utility model discloses a narrow-gauge mining frame structure with adjustable track gauge, comprising: a wheel axle; two rail wheel assemblies, respectively sleeved on the left and right ends of the wheel axle; two adjustment assemblies, respectively arranged corresponding to the two rail wheel assemblies, the adjustment assembly comprising a plurality of adjustment sleeves, the adjustment sleeves being sleeved on the wheel axle and located on the left and / or right sides of the corresponding rail wheel assemblies; wherein a positioning structure is provided on the wheel axle for left and right positioning of the rail wheel assembly and the adjustment assembly, and the adjustment assembly is configured to adjust the position of the rail wheel assembly in the left and right directions by changing the orientation of the adjustment sleeve relative to the rail wheel assembly. The narrow-gauge mining frame structure with adjustable track gauge of the utility model embodiment can adjust the spacing between the two rail wheel assemblies, and has strong versatility.
Owner:HUNAN CHUANGYUAN MINING MASCH CO LTD
A bogie axle box for high-speed trains with overload self-adjusting structure
The present invention discloses a bogie axle box for high-speed trains with an overload self-adjusting structure, comprising a bogie housing, an axle box housing, a gauge changing mechanism, and further comprising: an air spring, the air spring being located at the gap between the bogie housing and the axle box housing; a support member for reducing the friction between the axle box housing and the axle box support rail, the support member being arranged at one end of the axle box housing in contact with the axle box support rail; a first groove, the first groove being arranged on the outside of the axle box housing; a detection member acting on the first groove and the sunken track of the track changing device, and being able to inform the driver of the gauge changing state. In the present invention, when the gauge change is completed and the wheel pair distance is adjusted, the second connecting rod is separated from the pressure switch under the elastic action of the first spring and the second spring, thereby disconnecting the circuit, reminding the operator in the control room that the limit pin has been re-locked, and the real-time state of the gauge changing operation can be effectively informed to the operator in the control room.
Owner:CHANGZHOU HUADE MACHINERY
Rail-crossing transfer device for wheel flaw detection equipment
Owner:BEIJING SHEENLINE GRP CO LTD
Weight bearing vehicle for gravity energy storage
InactiveCN120756532ASafety devices for lifting equipmentsMachines/enginesStructural engineeringControl theory
The invention discloses a heavy object bearing vehicle for gravity energy storage, and relates to the technical field of gravity energy storage power generation, the heavy object bearing vehicle comprises a bottom plate and two wheel sets, the two wheel sets are arranged at the two ends of the bottom plate, each wheel set comprises a first support, a guide shaft and a track wheel, and the first supports are fixedly arranged at the bottom of the bottom plate; the guide shaft is fixedly connected with the first support in a horizontal state, the two rail wheels are oppositely arranged on the guide shaft, each rail wheel comprises a sliding sleeve, a wheel body and a wheel frame, the sliding sleeves are slidably connected with the guide shaft, the sliding sleeves are rotatably connected with the wheel bodies, the sliding sleeves are fixedly connected with the bottoms of the wheel frames, limiting sliding grooves are formed in the bottom plate, and the wheel frames are slidably connected with the limiting sliding grooves. The wheel carrier abuts against the groove bottom of the limiting sliding groove. The track wheel structure capable of adjusting the distance is arranged and matched with the adjusting mechanism, the distance between the wheels can be flexibly adjusted according to the actual conditions that mountain terrains in different areas are complex and diversified and the width difference of the tracks is large, and the bearing vehicle can adapt to the tracks of various specifications.
Owner:安徽重力储能电力科技有限公司
Traveling device on tracks
The present disclosure relates to a track travelling device, comprising a vehicle body (20), a connection device (40) and two groups of wheels (30). The two groups of wheels (30) are disposed on two sides of the vehicle body (20) respectively and the wheels (30) comprise rims (31) matched with tracks (10). One end of the connection device (40) is connected to a bottom of the vehicle body (20) and the other end of the connection device (40) is connected to the wheels (30). The connection device (40) comprises an elastic member (41) and the elastic member (41) is configured to be deformed under the gravity of the vehicle body (20) to adjust distances between the rims (31) of the two groups of wheels (30). Under the gravity of the vehicle body, the track travelling device of the present disclosure can closely attach the rims of the wheels to side surfaces of the tracks, thereby preventing the vehicle body from swaying side to side. Meanwhile, the connection device comprises the elastic member for adaption to a change of a track gauge.
Owner:JD DIGITS HAIYI INFORMATION TECHNOLOGY CO LTD
Axle for use in gauge-changeable wheel set, and gauge-changeable wheel set
Owner:CRRC QINGDAO SIFANG CO LTD
ARTICULATED CONNECTION FOR TORQUE TRANSMISSION IN A RAIL AXLE WITH VARIABLE CALIBER
Owner:VARIABLE GAUGE SYST SL
Gate catch assembly
ActiveUS12305427B2Gates/doorsRailway inspection trolleysElectrical and Electronics engineeringTrack gauge
The present invention relates broadly to a railway track trolley (10) generally comprising a collapsible chassis (12), two pairs of wheels (14a / b) and (16a / b), and a platform assembly (18). The collapsible chassis (12) includes a pair of opposing beams member (20a) and (20b) interconnected by a pair of adjustable cross-members (22) and (24). The pair of wheels (14a) and (16a) are removably mounted to opposing ends of one of the beam members (20a) whereas the other pair of wheels (14b) and (16b) are removably mounted to opposing ends of the other of the beam members (20b). The railway tracks (26a) and (26b) may be separated at one of a plurality of predetermined track gauges and the collapsible chassis in an expanded condition is designed to match the required lateral separation of the opposing rail members (26a / b). The invention is also directed broadly to a gate catch assembly (90) generally comprising a coupling sub-assembly (92), and a catch sub-assembly (96) configured to be releasably engaged by the coupling sub-assembly (92). The gate catch assembly (90) may be installed in conjunction with the platform assembly (18) of the railway track trolley (10) of the earlier aspect of the invention.
Owner:MELVELLE EQUIP CORP
A tool transfer device for subway construction and a method of using the same
Owner:CCCC SECOND HIGHWAY ENG BUREAU RAILWAY CONSTR CO LTD +1
Highway-railway dual-purpose rail-crossing rescue vehicle
The invention relates to the field of special rescue vehicles, and discloses a highway-railway dual-purpose rail-crossing rescue vehicle which comprises a rescue vehicle body, main wheels are mounted on the rescue vehicle body, and a rail switching mechanism, an obstacle crossing mechanism and an adjusting mechanism are arranged on the rescue vehicle body; the rail switching mechanism comprises a first hydraulic cylinder, a push plate, a wheel carrier, a rail wheel, a first rotating piece, a second rotating piece, a traction piece and a moving piece. A hydraulic rod of the first hydraulic cylinder is fixedly connected with the push plate, the push plate is fixedly connected with the wheel frame, the rail wheels are rotationally installed on the wheel frame, and the first rotating piece is rotationally installed on the wheel frame. The vehicle has the following advantages and effects that the vehicle can be rapidly switched between a highway mode and a railway mode, and flexible driving on a rugged road surface is achieved through the main wheels and the reinforced suspension in the highway mode; according to the railway mode, the track wheels are accurately attached to the track, the main wheels provide power, the front tracking guiding and rear track clamping anti-disengaging design is matched, the track running stability is ensured, and the obstacle crossing performance is excellent.
Owner:XIANGYANG GOTOO MASCH&ELECTRONICS APPLIANCE CO LTD
CONTROL DEVICE FOR A VARIABLE GAUGE TRAIN
Control device (200) for a variable gauge train for a train (100) with variable gauge which has a variable gauge in a gauge-changing section, wherein the device comprises: an inverter (2) for collectively controlling a torque of a plurality of main motors (104a-104d); and a voltage control unit (3) for controlling an output voltage of the inverter, wherein, if at least one of a plurality of axles (103a-103d) to be driven by the plurality of main motors is located within the track gauge change section and at least one of the axles is located outside the track gauge change section, the voltage control unit The reference frequency is treated as a value obtained by converting an average value of rotational frequencies of the axes located outside the track gauge change section into electrical frequencies of the main motors, and the reference frequency and a slip frequency command are added together to provide an output voltage frequency.
Owner:KYUSHU RAILWAY COMPANY +1
An adjustable gauge tracked railway sleeper changer
This invention discloses an adjustable-gauge tracked railway sleeper changer, belonging to the field of engineering machinery technology. It includes a chassis system comprising a frame, with a railway running system rotatably connected to the end of the frame. The railway running system includes a running support, with a first cylinder and a second cylinder respectively arranged on both sides of the running support. A first connecting pipe and a second connecting pipe are respectively arranged inside the first and second cylinders. A first connecting shaft is slidably arranged inside the first cylinder and the first connecting pipe, and a second connecting shaft is slidably arranged inside the second cylinder and the second connecting pipe. An adjustment mechanism is provided between the first and second connecting pipes to adjust the distance between the first and second connecting shafts. Limiting blocks are respectively provided on the first and second connecting pipes to restrict the movement of the first and second connecting shafts. This invention enables convenient adjustment of the track gauge, improving the adaptability of railway-specific equipment to railways with different track gauges.
Owner:XCMG EXCAVATOR MACHINERY CO LTD
A gauge adaptive engineering machinery chassis system, engineering machinery and a chassis system control method
The application discloses a track gauge adaptive engineering machinery chassis system, engineering machinery and a chassis system control method, and belongs to the technical field of railway engineering machinery. The chassis system comprises a frame, a rail walking module, a distance detection module and a controller. The rail walking module comprises two side guide wheels, and the two side guide wheels realize wheel-to-wheel distance adjustment through a bidirectional synchronous telescopic mechanism. The distance detection module comprises a first laser range finder and a second laser range finder, which respectively collect wheel-to-rail distance and wheel-to-wheel distance. The controller is configured to perform two-stage adjustment, i.e., on-track state confirmation according to the wheel-to-rail distance and off-track state confirmation according to the wheel-to-wheel distance. The two side guide wheels are rigidly and synchronously moved through the bidirectional synchronous telescopic mechanism, and the two laser ranging closed-loop control is matched, so that continuous adaptive adjustment of various track gauges is realized, presetting of a fixed mode or manual input of a target value is not needed, and the working continuity and the intelligent level of a multi-track-gauge railway scene are remarkably improved.
Owner:XCMG EXCAVATOR MACHINERY CO LTD
A traction beam cover with equal strength suitable for two track gauges
The present invention discloses a traction beam cover plate structure that adapts to two track gauges. The traction beam cover plate is a folded and pressed symmetrical span structure, including a traction beam main plate located in the middle of the longitudinal direction and traction beam wing plates integrated on both sides of the traction beam main plate; the two wing plate surfaces of the main plate gradually widen and transitionally connect with the wing plates of equal width, the thickness of the main plate is greater than the thickness of the wing plate, and the thickness of the main plate on both wings gradually thins to both sides, and transitions to the same thickness as the wing plates; the middle part of the main plate is hollowed out to reduce the dead weight; side bearing assembly holes are arranged on the main plate and the wing plates, which are respectively used for narrow track or standard track change structures. The traction beam cover plate of the present invention follows the equal strength design, adopts a span structure, is hollowed out in the middle, and gradually widens in width to ensure the bearing strength; the thickness of the main plate is greater than the thickness of the wing plate, and the thickness of the main plate gradually changes, and transitions to the same thickness as the wing plate to reduce the dead weight; side bearing assembly holes are arranged on the main plate and the wing plates, which meet the needs of narrow track and standard track at the same time, and are convenient for track change assembly.
Owner:CRRC MEISHAN CO LTD
Transfer device for alloy smelting heating furnace
The utility model relates to the technical field of transfer trolleys, and discloses an alloy smelting heating furnace transfer device which comprises a base, rail wheels are arranged on the periphery of the outer portion of the base, frames are fixedly connected to the front side and the rear side of the top of the base, and a hollow ring is rotationally connected between every two adjacent frames. The inner side of the hollow ring is rotatably connected with a furnace body, the bottom of the furnace body is fixedly connected with a balancing weight, the front side and the rear side of the exterior of the hollow ring penetrate through the frame and are fixedly connected with rotating plates, the top of the inner side of the frame is rotatably connected with a first bevel gear, and the middle of the inner side of the frame is rotatably connected with a bevel gear ring. According to the utility model, after the furnace body is filled with materials, the materials are conveyed through the rail wheels, and when the device moves to a slope or inclines, the furnace body is kept vertical and adapts to different terrains through a rotating mechanism of the balancing weight, the hollow ring and the furnace body, so that the materials are prevented from being splashed due to inclination, and speed reduction or material reduction is not needed.
Owner:LOUDI XINGXIN ALLOY
Variable gauge wheel set with non-rotating axle, bogie and railway vehicle
The invention belongs to the technical field of variable-gauge wheelsets, and particularly relates to a variable-gauge wheelset with a non-rotating axle, a bogie and a railway vehicle, the variable-gauge wheelset with the non-rotating axle comprises the axle, a coupling barrel is rotatably arranged on the axle, wheel assemblies are slidably connected to the two ends of the coupling barrel, and each wheel assembly comprises a wheel. The wheels can rotate relative to the axle, the wheel assembly is connected with the axle in a sliding mode, so that the distance between the two wheels is adjustable, and torque is transmitted between the two wheels through a coupling cylinder. The abrasion speed between the wheel assembly and the axle is reduced, the service life of the gauge-changeable wheel set is prolonged, the two wheels change rails at the same time, and the rail changing efficiency is improved; in addition, compared with axle rotation, the wheel assembly only bears vertical loads and does not bear alternating loads, and the reliability of the wheel assembly is improved.
Owner:CRRC YANGTZE GRP CO LTD
A gauge-changing device applied to the bogie of a high-speed train
The present application relates to a gauge-changing device applied to a high-speed train bogie, and relates to the technical field of gauge-changing trains. A gauge-changing device applied to a high-speed train bogie includes a bogie; a rotating assembly, which includes an axle rotatably connected to the bogie, an inner sliding sleeve slidably sleeved on the axle, a wheel fixedly sleeved on the inner sliding sleeve, and a rolling assembly sleeved on the inner sliding sleeve; an outer sliding sleeve, which is sleeved on the rolling assembly, and a plurality of chucks are convexly arranged at intervals on the outer ring; a non-rotating assembly, which includes a journal box fixedly connected to the bogie, a locking rod slidably connected to the journal box, and a pressing member, a card slot is arranged on the locking rod, and the pressing member drives the locking rod to clamp the card slot. The present application has the effects of being easy to manufacture, maintain and being able to reduce costs.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
Railway train and its gauge changing device
The application discloses a track train and a track gauge conversion device thereof, and relates to the technical field of track transportation. The track gauge conversion device comprises a track conversion line, a track conversion bogie, a magnetic circuit guide rail, a magnetic circuit coil assembly, a rotary hydraulic cylinder, a distance detection module and an oil supply module. The track conversion bogie can move on the track conversion line. The magnetic circuit coil assembly and the magnetic circuit guide rail repel each other through a magnetic field, so as to unload the load acting on the wheel. The rotary hydraulic cylinder comprises a cylinder body and a piston rod. The distance detection module is used for detecting the distance between the wheel and the center of the axle. The oil supply module is used for supplying oil to the rotary hydraulic cylinder when the distance detected by the corresponding distance detection module is inconsistent with the set track conversion distance, so that the piston rod extends or retracts relative to the cylinder body, and the distance between the wheel and the center of the axle is adjusted. The track gauge conversion device can quickly convert the track without damaging the overall structure of the bogie, greatly reduces the track conversion time, accelerates the operation efficiency of the cross-country train, and reduces the labor and material costs.
Owner:CRRC QINGDAO SIFANG CO LTD
Track detection vehicle
PendingCN121697687ARailway inspection trolleysRailway auxillary equipmentVehicle frameControl theory
The invention discloses a track detection vehicle which comprises a frame assembly and a track assembly. The wheel assembly comprises wheels, an axle, a sleeve unit and a first driving unit; the axle is sleeved with the sleeve unit, the sleeve unit is connected with the wheels, and the first driving unit is connected with the axle. The connecting assembly is rotationally connected with the sleeve unit; and the telescopic assembly comprises a second driving unit and a first sliding rod unit, the first sliding rod unit is connected with the connecting assembly, and the second driving unit is connected with the first sliding rod unit. The second driving unit can conduct corresponding telescopic operation according to the change condition of the distance, so that the first sliding rod unit is driven to drive the connecting assembly to move, the sleeve unit overcomes the friction force of the contact face of the sleeve unit and the axle to move inwards or outwards along the axle, and therefore automatic adjustment of the distance between the wheels is achieved. The track detection vehicle can continuously walk conveniently, and the adaptability and the maintenance efficiency of the track detection vehicle are greatly improved.
Owner:JIANGMEN CHENPUFANG INTELLIGENT EQUIPMENT TECHNOLOGY CO LTD +1
Thrust conversion mechanism for variable track wheel set, unlocking device and variable track wheel set
Owner:CRRC QINGDAO SIFANG CO LTD
Thrust conversion mechanism for gauge-variable wheel set, unlocking device, and gauge-variable wheel set
Owner:CRRC QINGDAO SIFANG CO LTD
Crawler-type railway sleeper changing machine capable of adjusting track gauge
ActiveCN119611448AEasy to adjustImprove adaptabilityRail and road vehiclesTrack superstructureVehicle frameMachine
The invention discloses a track gauge-adjustable crawler-type railway sleeper changing machine, which belongs to the technical field of engineering machinery, and comprises a chassis system, the chassis system comprises a frame, the end part of the frame is rotatably connected with a railway walking system, the railway walking system comprises a walking bracket, and the two sides of the walking bracket are respectively provided with a first cylinder and a second cylinder; a first connecting pipe and a second connecting pipe are arranged on the inner side of the first cylinder and the inner side of the second cylinder respectively, a first connecting shaft is slidably arranged in the first cylinder and the first connecting pipe, a second connecting shaft is slidably arranged in the second cylinder and the second connecting pipe, and an adjusting mechanism is arranged between the first connecting pipe and the second connecting pipe. The adjusting mechanism is used for adjusting the distance between the first connecting shaft and the second connecting shaft, and limiting blocks used for limiting movement of the first connecting shaft and the second connecting shaft are arranged on the first connecting pipe and the second connecting pipe correspondingly. The track gauge can be conveniently adjusted, and the adaptability of the special equipment for the railway to railways with different track gauges is improved.
Owner:XCMG EXCAVATOR MACHINERY CO LTD
Variable wheelbase mechanism and bogie
The present invention relates to the technical field of suspended rail transit, and in particular to a variable wheelbase mechanism and a bogie, which are intended to solve the problem of insufficient contact between the running wheels and the running boards when the train runs on tracks of different widths. The variable wheelbase mechanism provided by the present invention includes a running wheel, a sliding shaft, a power shaft and a lever assembly; the running wheel is mounted on one end of the sliding shaft, and the end of the sliding shaft away from the running wheel is sleeved on the power shaft; the sliding shaft can move along the axial direction of the power shaft and drive the running wheel to move along the axial direction of the power shaft; the power shaft rotates around its own axis to drive the sliding shaft to rotate, and then drive the running wheel to rotate. The variable wheelbase mechanism provided by the present invention drives the sliding shaft to move along the axial direction of the power shaft through the lever assembly to drive the running wheel to move along the axial direction of the power shaft, thereby adjusting the position of the running wheel perpendicular to the forward direction to adapt to changes in track width and avoid insufficient contact between the running wheel and the track.
Owner:BEIJING CHINA CONSTR AIRLINE GRP CO LTD
Coal mine transportation device convenient to adjust
The utility model provides a coal mine transportation device convenient to adjust, which belongs to the field of coal mine transportation and comprises a bottom frame, the left side and the right side of the bottom frame are fixedly connected with vertical frames respectively, an ore box is rotatably connected between the two vertical frames, and the upper side and the lower side between the front side and the rear side of the bottom frame are fixedly connected with transverse plates respectively. Through grooves are formed in the front side and the rear side of the bottom frame correspondingly. And the distance adjusting assembly comprises two fixed shafts fixedly connected to the left side and the right side of the bottom frame, and moving plates are slidably connected to the front side and the rear side between the outer sides of the two fixed shafts correspondingly. Through the arranged distance adjusting assembly, the wheel distance of the conveying device can be conveniently adjusted according to the needed length, the adjusting range is wide, adjusting operation is simpler and can be achieved only by rotating the rotating frame, after adjusting is completed, locking operation on the rotating frame is simpler, adjusting steps are simplified, and adjusting operation is facilitated.
Owner:JIAOZUO COAL IND GRP XINXIANG ENERGY LTD
Laser alignment system for railcar mover and method of use
ActiveUS12576894B2Wheel-rims surveying/measuringTrain hauling devicesErbium lasersMechanical engineering
A laser alignment system for a railcar mover is disclosed herein. The laser alignment system may comprise a laser mounted to a frame of a railcar mover that assists with the alignment of a rail wheel and the rail of a track when switching from road mode to rail mode. In various embodiments, the laser may be mounted to the frame of the railcar mover via a mount and / or mounting structure that enable the laser to be moved and / or the orientation of the laser to be adjusted relative to the railcar mover. In some embodiments, the laser alignment system may include a window underneath the operator of the railcar mover so that a laser beam emitted by the laser can be seen by the operator.
Owner:ZEPHIR
Rail guided vehicle (RGV) body structure capable of self-adapting to track gauge
Owner:HUBEI XIANGZI INTELLIGENT EQUIP CO LTD
Variable gauge wheel set and rail vehicle variable gauge system
PendingCN121375874AWheel-axle combinationsDifferent width rail tracksControl engineeringControl theory
The invention discloses a variable gauge wheel set and a rail vehicle variable gauge system, and relates to the technical field of rail vehicle variable gauge, the variable gauge wheel set comprises an axle and wheels, the wheels are arranged at the two ends of the axle, the two ends, located outside the wheels, of the axle are supported in axle boxes respectively, and the wheels are movably connected to the axle; the gauge-changeable wheel set further comprises a first locking sleeve and a second locking sleeve, the first locking sleeve is fixed to the axle, one end of the second locking sleeve is movably embedded in the first locking sleeve, the other end of the second locking sleeve is movably embedded in the wheel, the second locking sleeve is configured to move between a first position and a second position, and when the second locking sleeve is located at the first position, the second locking sleeve is located at the second position. The wheels are locked on the axle, and when the second locking sleeve moves from the first position to the second position, the wheels can rotate relative to the axle. The variable gauge wheel set solves the problems that in the prior art, the structure is complex, operation is tedious, and the economic cost is too high.
Owner:CRRC QINGDAO SIFANG CO LTD
System and method for inspecting tracks in amusement attractions
PendingJP2025533438ARailway inspection trolleysRail derailment preventionTrackwayControl engineering
The attraction system includes a track, a support vehicle having a wheel assembly configured to adjustably engage the track and having a sensor configured to obtain a characteristic of the attraction system, and a control assembly configured to control the support vehicle to traverse the track with the wheel assembly and to receive sensor data indicative of the characteristic of the attraction system from the sensor.
Owner:UNIVERSAL CITY STUDIOS LLC
High throughput transportation system with seamless carriage switching between tracks along the vertical plane
The present invention relates to the field of automated transportation systems. Particularly, it relates to a transportation system comprising guide-ways or tracks, vehicle units [100, 100a] with wheel-axle assembly for switching of vehicles from primary [20] to secondary track [22] on changing trajectory to maintain same vertical plane and the method. It comprises of central controller [101], vehicle chassis with main wheels [2W], guide wheels [4iw, 4ow], guide blocks [05, 06], actuator [09]. The chassis [30] has set of contractible axles fixed to wheels [2W] to enables movement from primary [20] to secondary track [22] by withdrawing the wheels [2W] from expanded position [C] to contracted position [C] or vice-versa. The forces required to compress the spring loaded axle axis is derived from inner guide wheels rolling over the edge flange [26] when swung using single linear motor actuator [09] and related electronic controls.
Owner:VIBHUTI ANUPAM
Jointed connection for transmitting torque in a variable-gauge rail axle
The invention describes a jointed connection (1) for transmitting torque in a variable-gauge rail axle, which comprises: a first fork (2) comprising an inner side (21) and an outer side (22), wherein an end of the outer side (22) is rotatably connected about a transverse axis (E2a) to one of either a wheel (200) or a rail axle (100); a second fork (3) that has an inner side (31) and an outer side (32), wherein an end of the outer side (32) is rotatably connected about a transverse axis (E3a) to the other of either the wheel (200) or the rail axle (100); and a ball-and-socket joint that connects ends of the inner sides (21, 31) of the first and second forks (2, 3).
Owner:EPE ADMINISTRADOR DE INFRAESTRUCTURASFERROVIARIAS (ADIF)