# US 10,246,147 B2 · Industrial vehicle with device for releasing the undercarriages without disconnecting the hydraulic system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,246,147 B2 - Document ID: US10246147B2 - Status: Granted - Kind: B2 - Application number: 15/249,731 - Filed: 2016-08-29 - Published: 2017-03-02 - Granted: 2019-04-02 - Earliest claimed: 2015-08-27 - Assignees: Scaip S.P.A. - Applicants: Scaip S.R.L. - Inventors: Gian Paolo Dondi - Web page: https://patentgrep.com/patent/US10246147B2 ## CPC - B62D 55/084: Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units (B62D55/07 takes precedence) - B60K 17/046: {with planetary gearing having orbital motion} - B62D 55/125: Final drives - B66C 23/365: {dismantable into smaller units for transport purposes} - F16H 57/025: Support of gearboxes, e.g. torque arms, or attachment to other devices - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B66C: CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES ({specially adapted for lifting invalids A61G7/10;} rope, cable, or chain winding mechanisms, braking or detent devices therefor B66D; specially adapted for nuclear reactors G21) - F16H: GEARING ## Abstract An industrial vehicle includes at least a structure 1 with the chassis 3 and a pair of crawler undercarriages 2 each of which is driven by a hydraulic motor 5 which transmits the motion and the engine torque to a planetary gear unit 6 on which is keyed a drive wheel 4. The hydraulic motor 5 and the reduction gear 6 are not directly connected, but between them is interposed a transmission device 10. During the detachment operation of the crawler undercarriage 2 from the chassis 3, the hydraulic motor 5 is released from the device of transmission 10 and remains attached to the chassis 3, preserving its hydraulic connections, while the planetary gear unit 6 and the transmission device 10 remain fixed to the undercarriage 2. ## Claims ### Claim 1 An industrial vehicle, comprising: at least one structure with a chassis and a pair of crawler undercarriages, each of which is driven by a hydraulic motor which transmits motion and torque to a planetary gearbox on which a drive wheel is keyed; and hooking-release means for releasing the crawler undercarriages from said chassis; wherein the hydraulic motor and the planetary gearbox are interconnected through the interposition of at least one transmission device; wherein said at least one transmission device is coaxial to the hydraulic motor and the planetary gearbox; and wherein following the operations for releasing the crawler undercarriage from the chassis, the hydraulic motor is released from the at least one transmission device and remains integral to the chassis, keeping its hydraulic connections intact while the planetary gearbox and the at least one transmission device remain integral to the crawler undercarriage. ### Claim 2 (depends on 1) The industrial vehicle according to claim 1, wherein the at least one transmission device comprises a shaft, a hub and a hollow sleeve; the shaft and the hub being adapted to transmit motion and driving torque from the hydraulic motor to the gearbox, and wherein the hollow sleeve, which accommodates the shaft and the hub, connect respective flanges of the hydraulic motor and of the gearbox. ### Claim 3 (depends on 2) The industrial vehicle according to claim 2, wherein the hub is hollow and internally bearing a grooved profile with radial toothing and dimensions suitable for matching with a grooved male shaft of the hydraulic motor. ### Claim 4 (depends on 3) The industrial vehicle according to claim 3, wherein the hub internally has a seat for a snap ring which serves as an abutment for the correct positioning of the shaft. ### Claim 5 (depends on 3) The industrial vehicle according to claim 3, wherein being grooved, the hub allows removing the shaft of the hydraulic motor such that said motor remains integral to the chassis and supported thereby. ### Claim 6 (depends on 2) The industrial vehicle according to claim 2, wherein the shaft has a grooved profile with radial toothing at one end and dimensions suitable for mating with a grooved hollow shaft of the gearbox, the shaft having at an other end, a grooved profile with radial toothing and dimensions suitable for mating with the hub. ### Claim 7 (depends on 2) The industrial vehicle according to claim 2, wherein the hollow sleeve bears two flanges at the ends, one with dimensions and drilling suitable for being coupled and bolted to the flange of the hydraulic motor and one with dimensions and drilling suitable for being coupled and bolted to the flange of the gearbox; the distance between the two flanges and thereby the length of the hollow sleeve being defined by the length of the shaft. ### Claim 8 (depends on 2) The industrial vehicle according to claim 2, wherein the hollow sleeve internally bears a seat for housing at least one bearing adapted to support the sleeve and the shaft. ### Claim 9 An industrial vehicle, comprising: at least one structure with a chassis and a pair of crawler undercarriages, each of which is driven by a hydraulic motor which transmits motion and torque to a planetary gearbox on which a drive wheel is keyed; and hooking-release means for releasing the crawler undercarriages from said chassis, wherein the hydraulic motor and the planetary gearbox are interconnected through the interposition of at least one transmission device, wherein following the operations for releasing the crawler undercarriage from the chassis, the hydraulic motor is released from the at least one transmission device and remains integral to the chassis, keeping its hydraulic connections intact while the planetary gearbox and the at least one transmission device remain integral to the crawler undercarriage, wherein the at least one transmission device comprises a shaft, a hub and a hollow sleeve; the shaft and the hub being adapted to transmit motion and driving torque from the hydraulic motor to the gearbox, wherein the hollow sleeve, which accommodates the shaft and the hub, connect respective flanges of the hydraulic motor and of the gearbox, and wherein the hub is hollow and internally bearing a grooved profile with radial toothing and dimensions suitable for matching with a grooved male shaft of the hydraulic motor. ### Claim 10 (depends on 9) The industrial vehicle according to claim 9, wherein the hub internally has a seat for a snap ring which serves as an abutment for the correct positioning of the shaft. ### Claim 11 (depends on 9) The industrial vehicle according to claim 9, wherein being grooved, the hub allows removing the shaft of the hydraulic motor such that said motor remains integral to the chassis and supported thereby. ### Claim 12 An industrial vehicle, comprising: at least one structure with a chassis and a pair of crawler undercarriages, each of which is driven by a hydraulic motor which transmits motion and torque to a planetary gearbox on which a drive wheel is keyed; and hooking-release means for releasing the crawler undercarriages from said chassis, wherein the hydraulic motor and the planetary gearbox are interconnected through the interposition of at least one transmission device, wherein following the operations for releasing the crawler undercarriage from the chassis, the hydraulic motor is released from the at least one transmission device and remains integral to the chassis, keeping its hydraulic connections intact while the planetary gearbox and the at least one transmission device remain integral to the crawler undercarriage, wherein the at least one transmission device comprises a shaft, a hub and a hollow sleeve; the shaft and the hub being adapted to transmit motion and driving torque from the hydraulic motor to the gearbox, wherein the hollow sleeve, which accommodates the shaft and the hub, connect respective flanges of the hydraulic motor and of the gearbox, and wherein the shaft has a grooved profile with radial toothing at one end and dimensions suitable for mating with a grooved hollow shaft of the gearbox, the shaft having at another end, a grooved profile with radial toothing and dimensions suitable for mating with the hub.