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CN-122013832-A - Electric power machine

CN122013832ACN 122013832 ACN122013832 ACN 122013832ACN-122013832-A

Abstract

A power machine (300, 400) may include a frame (310, 410), a lift arm (330, 430), and one or more electrical devices for controlling one or more work elements. An electric tilt actuator (333, 433) may be secured to the lift arm (330, 430) to change the attitude of the implement carrier (372, 472), an electric lift actuator (338, 438) may be secured to the frame (310, 410) to raise and lower the lift arm (334, 434), an electric drive motor (326) may be mounted to the track frame (343) to move the track, or a battery assembly (322, 418) and an electrical control module (360, 420) may be secured to the frame (310, 410), including behind the operator station (455).

Inventors

  • Brent Delkin
  • JOHN PFAFF
  • DENNIS AGNEW
  • Matthew sagaze

Assignees

  • 斗山山猫北美公司

Dates

Publication Date
20260512
Application Date
20210302
Priority Date
20200302

Claims (16)

  1. 1. A loader, comprising: A main frame including a first rear pocket on a first lateral side of the main frame and a second rear pocket on an opposite second lateral side of the main frame; an operator station supported by a front portion of the main frame and forward of the first rear pocket and the second rear pocket; A battery assembly supported by a rear portion of the main frame and at least partially located rearward and below the operator station; A traction assembly supported by the main frame, wherein the traction assembly is aligned in front of the first rear pocket and the second rear pocket in a fore-aft direction of the loader, the traction assembly configured to be powered by the battery assembly; A lifting arm structure supported by the main frame, the lifting arm structure comprising: A first lift arm extending along a first lateral side of the main frame and a second lift arm extending along a second lateral side of the main frame, wherein a proximal end of the first lift arm and a proximal end of the second lift arm are pivotally secured to the main frame at a rear portion of the main frame; One or more tilt actuators supported by the first lift arm and the second lift arm and operable to tilt an implement at a distal end of the first lift arm and a distal end of the second lift arm; A first electric lift actuator secured to the main frame at a first pin connection located within the first rear pocket and rearward of the traction assembly and extending from the first rear pocket and to the first pin connection with the first lift arm; A second electric lift actuator secured to the main frame by means of a second pin connection located within the second rear pocket and rearward of the traction assembly and extending from the second rear pocket and to a second pin connection with the second lift arm; each of the first and second electric lift actuators includes an electric motor powered by the battery assembly and a screw extender powered by the electric motor, Each of the first and second electric lift actuators is pinned at a proximal end within a respective first or second rear pocket, and Wherein, the for the first electric lifting actuator and the first electric lifting actuator each of the second electric lift actuators: The screw extender is pinned to the respective first or second lift arm at a distal end of the screw extender and controllably extends and retracts along a first axis between the distal end and the proximal end of the respective first or second lift actuator under power from the battery assembly; The electric motor extends from a proximal end of the respective first or second lift actuator along a second axis offset relative to and parallel to the first axis.
  2. 2. The loader of claim 1, wherein the traction assembly comprises: A first track frame movably secured to a first lateral side of the main frame and a second track frame movably secured to a second lateral side of the main frame; First and second electric drive motors mounted to the first and second track frames, respectively, to power movement of the loader over terrain; Wherein at least a portion of each of the first and second electric drive motors extends laterally inward from the respective first or second track frame toward the main frame to overlap the first or second rear pocket, respectively, in a lateral direction and extend through the first or second lateral side of the main frame, respectively.
  3. 3. The loader of claim 1, wherein a center of gravity of the battery assembly is disposed rearward of the operator station and at one or more of the following locations: disposed rearward of a drive motor supported by the main frame to power operation of the traction assembly, or Is disposed at less than 50% of the total length of the front and rear of the main frame from the rear end of the main frame.
  4. 4. The loader of claim 1, wherein, for each of the first and second electric lift actuators, with the lift arm structure in a fully lowered orientation, an axial direction of the electric motor is tilted forward from a proximal end of the respective first or second electric lift actuator.
  5. 5. The loader of claim 1, wherein, at all operational orientations of the lift arm structure, for each of the first and second electric lift actuators, the electric motor is located behind one or more of: The first pin connection or the second pin connection of the first electric lifting actuator or the second electric lifting actuator respectively located in the first rear recess or the second rear recess, or The first pin connection or the second pin connection between the respective first or second electric lift actuator and the respective first or second lift arm.
  6. 6. The loader of claim 1, wherein, for each of the first lift arm and the second lift arm, respectively, a proximal end of the first lift arm or the second lift arm is aligned over the respective first rear pocket or the second rear pocket with the lift arm structure in a fully lowered configuration.
  7. 7. The loader of claim 6, wherein the first portion of the first lift arm and the first portion of the second lift arm are pivotally secured to the main frame in vertical alignment with the first rear pocket and the second rear pocket, respectively; Wherein with the lift arm structure in the fully lowered orientation, a proximal end of the second portion of the first lift arm and a proximal end of the second portion of the second lift arm are pivotally supported by the first portion of the first lift arm and the first portion of the second lift arm behind the first pin connection and the second pin connection of the first electric lift actuator and the second electric lift actuator, respectively.
  8. 8. The loader of claim 7, wherein the first lift arm and the second lift arm are further supported by a first control link and a second control link, the first and second control links are pivotally secured to the main frame forward of the first and second pinned connections of the first and second electric lift actuators, respectively.
  9. 9. The loader of claim 1, wherein the first and second lift arms are supported relative to the main frame by first and second control links that extend inboard of the first and second electric lift actuators, respectively.
  10. 10. The loader of claim 9, wherein with the lift arm structure in a fully lowered orientation, the first and second control links extend laterally across the screw extender of the first and second electric lift actuators, respectively, and to pin connections with the first and second lift arms vertically aligned with the first and second rear pockets, respectively.
  11. 11. The loader of claim 1, wherein the main frame further comprises a cross bar extending laterally across the main frame to connect an inner wall of the first rear pocket and an inner wall of the second rear pocket, and Wherein the crossbar is located above the battery assembly and behind the operator station.
  12. 12. The loader of claim 1, wherein the top wall of the battery assembly is positioned between about 40% of the total height of the main frame and about 60% of the total height of the main frame.
  13. 13. The loader of claim 12, further comprising: A support shelf extending between the first and second rear pockets above a top wall of the battery assembly and behind the operator station and supporting an electronic control system for the first and second electric lift actuators.
  14. 14. A power machine, comprising: a main frame including a rear portion defining a power compartment and a tower structure along a lateral side of the power compartment, the tower structure including an inner wall and an outer wall defining a rear frame pocket; a power supply within the power supply compartment supported by the main frame; means for transmitting power from the power source to the interior of the rear frame pocket; a lift actuator assembly, the lift actuator assembly comprising: Means for converting the transmitted electrical power into rotational power, positioned within the rear frame pocket and aligned for rotation along an axis of rotation, and Means for converting rotational power into extension and retraction along an extension axis, operatively connected to means for converting transmitted electrical power within the rear frame pocket, the rotation axis being located beside and rearward of the extension axis, and A lift arm structure including a lift arm fixed to the means for converting the rotational power such that the means for converting the rotational power extends toward and retracts away from the lift arm to raise and lower with respect to the main frame with the transmitted power from the power source.
  15. 15. The power machine of claim 14, wherein the means for converting the transmitted electrical power is located rearward of the means for converting the rotational power within the rear frame pocket.
  16. 16. The power machine of claim 15, wherein said means for converting said transmitted power and said means for converting said rotational power are secured at a common pin connection within said rear frame pocket, wherein said means for converting said transmitted power is completely surrounded by said rear frame pocket, and Wherein the means for converting the rotational power is partially surrounded by the rear frame pocket and extends upwardly out of the rear frame pocket to engage the lift arm in all operative positions of the lift arm.

Description

Electric power machine The application is a divisional application based on International application date 2021, 3 and 2, and entering China at 2022, 9 and 2, national application number 202180018811.2, PCT national stage application of the application named "electric power machine", and corresponding PCT International application number PCT/US2021/020525. Background The present disclosure relates to power machines. More specifically, the present disclosure relates to power machines that operate wholly or partially under electric power. For purposes of this disclosure, a power machine includes any type of machine that generates power for the purpose of accomplishing a particular task or a variety of different tasks. One type of power machine is a work vehicle. Work vehicles such as loaders are typically self-propelled vehicles having a work device such as a lift arm (although some work vehicles may have other work devices) that may be maneuvered to perform a work function. Work vehicles include loaders, excavators, utility vehicles, tractors, and trenchers, to name a few. Conventional power machines may include hydraulic systems and related components configured to use the output from an automatic power source (e.g., an internal combustion engine) to perform various work functions. More specifically, the hydraulic motor may be configured to power movement of the power machine, and a hydraulic actuator (e.g., a hydraulic cylinder) may be used to move a lift arm structure attached to the power machine to tilt or otherwise move an implement connected to the lift arm structure, or perform other operations. The discussion above is merely provided for general background information and is not intended to be used as an aid in determining the scope of the claimed subject matter. Disclosure of Invention Some embodiments of the present disclosure provide a power machine for movably operating an implement. The power machine may include a main frame supporting an operator station and a lift arm structure. The lift arm structure may include a lift arm extending along a lateral side of the frame. A proximal end of the lift arm is movably secured to the frame at a rear portion of the frame. The distal end of the lift arm may include a tilt actuator pocket with an open side of the tilt actuator pocket facing in a forward direction of the power machine with the lift arm in a fully lowered position. The power machine may also include an implement carrier movably secured to the distal end of the lift arm, an electric tilt actuator, and an electric lift actuator. The electric tilt actuator may be secured to the lift arm within the tilt actuator pocket and configured to controllably extend and retract to change the attitude of the implement carrier. The electric lift actuator may be secured to the rear portion of the frame at a first end and to the lift arm at a second end. Further, the electric lift actuator may be disposed within a lift actuator pocket defined by the frame, and the electric lift actuator is configured to controllably extend and retract to raise and lower the lift arm. Some embodiments of the present disclosure provide a power machine including a track frame located on a lateral side of the main frame, and an electric drive motor mounted to the track frame and configured to move a track around the track frame to move the power machine over terrain. The track frame is movably secured to the main frame. Some embodiments of the present disclosure provide a power machine having at least a portion of an electric drive motor extending laterally from a track frame to overlap a main frame. Some embodiments of the present disclosure provide a power machine that includes an electric drive motor that extends laterally through an opening in a main frame. Some embodiments of the present disclosure provide a power machine that includes an electrical tilt actuator secured to a lift arm by a pinning in a proximal end of a channel. Some embodiments of the present disclosure provide a power machine including a tilt actuator pocket having a channel that tapers such that a distal end of the channel has a smaller lateral width than a proximal end of the channel. Some embodiments of the present disclosure provide a power machine that includes a tilt actuator pocket that at least partially supports an electrical tilt actuator in a lateral direction to an outside of an operator station. Some embodiments of the present disclosure provide a power machine including an electric lift actuator having a motor end of the electric lift actuator that is pinned within a lift actuator pocket and an extendable end of the electric lift actuator that extends out of the lift actuator pocket to a pinned connection with a lift arm. Some embodiments of the present disclosure provide a power machine in which the motor of the motor end of the electric lift actuator is located behind one or more of the pinning to the lift arm, or the pinning between the e