# US 8,540,067 B2 · Power transmission arrangement

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- Number: US 8,540,067 B2
- Document ID: US8540067B2
- Status: Granted
- Kind: B2
- Application number: 12/527,571
- Filed: 2007-03-21
- Published: 2010-03-25
- Granted: 2013-09-24
- Earliest claimed: 2007-03-21
- Assignees: Volvo Construction Equipment AB
- Applicants: Timothy Kingston; Mats Akerblom; Thomas Andersson
- Inventors: Timothy Kingston; Mats Akerblom; Thomas Andersson
- Web page: https://patentgrep.com/patent/US8540067B2

## CPC

- B60K 17/346: the transfer gear being a differential gear
- B60T 1/062: {acting on transmission parts}
- B60Y 2200/145: Haulage vehicles, trailing trucks
- 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
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY

## Abstract

A power transmission arrangement includes a differential gear adapted to transfer power from an input shaft to a first output shaft, and a first brake adapted to effect the first output shaft and a second brake adapted to effect the input shaft.

## Claims

### Claim 1

A work machine power transmission arrangement comprising a differential gear having a differential case arranged in a transfer gear box and adapted to transfer power from an input shaft to a first output shaft, and a first brake adapted to effect the first output shaft, wherein the arrangement comprises a second brake adapted to effect the input shaft, wherein the second brake is arranged outside a casing of the transfer gear box and adapted to directly act on the input shaft, such that power flows from the input shaft through the second brake to the differential case when the second brake is not engaged.

### Claim 2 (depends on 1)

An arrangement according to claim 1, wherein the second brake forms a disc brake.

### Claim 3 (depends on 1)

An arrangement according to claim 1, wherein the second brake is spring-loaded.

### Claim 4 (depends on 1)

An arrangement according to claim 1, wherein the second brake is adapted for a parking brake function.

### Claim 5 (depends on 1)

An arrangement according to claim 1, wherein the first brake is adapted to act on the first output shaft.

### Claim 6 (depends on 1)

An arrangement according to claim 1, wherein the first brake forms a disc brake.

### Claim 7 (depends on 1)

An arrangement according to claim 1, wherein the first brake is spring-loaded.

### Claim 8 (depends on 1)

An arrangement according to claim 1, wherein the first brake is adapted for a parking brake function.

### Claim 9 (depends on 1)

An arrangement according to claim 1, wherein the first brake is configured to brake a substantially larger torque than the second brake.

### Claim 10 (depends on 1)

An arrangement according to claim 1, wherein the second brake is configured to brake about half the torque that the first brake is capable of.

### Claim 11 (depends on 1)

An arrangement according to claim 1, wherein the second brake is arranged at a distance from the differential gear.

### Claim 12 (depends on 1)

A powertrain comprising the power transmission arrangement according to claim 1, the transfer gear box being adapted to transfer power from the input shaft to the first output shaft and to a second output shaft.

### Claim 13 (depends on 12)

A powertrain according to claim 12, wherein the first brake is arranged downstream of the transfer gear box in a power transmission path.

### Claim 14 (depends on 12)

A powertrain according to claim 12, wherein the first output shaft is adapted to drive at least one rear axle of a vehicle.

### Claim 15 (depends on 12)

A powertrain according to claim 12, wherein the second output shaft is adapted to drive a front axle of a vehicle.

### Claim 16 (depends on 12)

A powertrain according to claim 12, wherein the arrangement comprises a power source adapted to provide rotational power to the input shaft.

### Claim 17 (depends on 12)

A vehicle comprising a powertrain according to claim 12.

### Claim 18 (depends on 12)

A work machine comprising a powertrain according to claim 12.

### Claim 19 (depends on 12)

An articulated hauler comprising a powertrain according to claim 12.