Electro-mechanical transmission
First Claim
Patent Images
1. An electro-mechanical transmission comprising:
- an electric propulsion motor;
an electric steer motor;
first and second final drive mechanisms;
wherein said propulsion motor and said steer motor are operatively connected with said final drive mechanisms;
an input differential gear set;
a first and a second torque transmitting mechanism;
wherein said propulsion motor is operatively connectable with said final drive mechanisms and said input differential gear set via selective engagement of said first and second torque transmitting mechanisms to establish first and second speed ratios, respectively, across said input differential gear set.
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Accused Products
Abstract
A hybrid electromechanical transmission for a tracked vehicle includes a drive motor and a steer motor with separate propulsion paths to output members of the transmission. A two-speed range package is provided, including an input planetary gear set and first and second clutches. The first and second clutches are selectively alternatively engagable to establish two speed ratios between the drive motor and the remainder of the transmission. Additionally, the drive motor and the steer motor are preferably designed with a module construction, allowing for easy connection and removal for serviceability via the use of axial V-clamps.
27 Citations
19 Claims
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1. An electro-mechanical transmission comprising:
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an electric propulsion motor; an electric steer motor; first and second final drive mechanisms;
wherein said propulsion motor and said steer motor are operatively connected with said final drive mechanisms;an input differential gear set; a first and a second torque transmitting mechanism; wherein said propulsion motor is operatively connectable with said final drive mechanisms and said input differential gear set via selective engagement of said first and second torque transmitting mechanisms to establish first and second speed ratios, respectively, across said input differential gear set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electro-mechanical transmission comprising:
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an electric propulsion motor; an electric steer motor; a first and a second final drive mechanism;
wherein said propulsion motor and said steer motor are operatively connectable with said first and second final drive mechanisms;an output cross shaft operatively connected with said first and second final drive mechanisms and axially therebetween; an input differential gear set connected between said propulsion motor and said output cross shaft; a first torque-transmitting mechanism selectively engagable to establish a first speed ratio through said input differential gear set; a second torque transmitting mechanism selectively engagable to establish a second speed ratio through said input differential gear set;
said input differential gear set and said first and second torque-transmitting mechanisms thereby establishing a two-speed range package between said propulsion motor and said final drive mechanisms. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. An electro-mechanical transmission comprising:
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a propulsion motor module having a propulsion motor housing encircling a propulsion motor;
wherein the propulsion motor has a stator and a rotor;a steer motor module having a steer motor housing encircling a steer motor;
wherein the steer motor has a stator and a rotor;first and second final drive mechanisms; wherein said propulsion motor and said steer motor are both operatively connectable with said final drive mechanisms; at least one stationary member at least partially surrounding at least one of said final drive mechanisms and axially abutting one of said motor housings; and an axial clamp circumscribing abutted portions of said one of said motor housings and said at least one stationary member and tightenable for selectively connecting said one of said motor housings to said at least one stationary member and releasable for selectively releasing said one of said motor housings from said at least one stationary member. - View Dependent Claims (19)
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Specification