Refuse vehicle with electric reach apparatus

Patent metadata

Field	Value
Publication number	US-11772890-B2
Application number	US-202117551872-A
Country	US
Kind code	B2
Filing date	Dec 15, 2021
Priority date	May 3, 2019
Publication date	Oct 3, 2023
Grant date	Oct 3, 2023

Abstract

A refuse vehicle includes a chassis, tractive elements, a lift apparatus, and a reach assembly. The tractive elements couple with the chassis and support the refuse vehicle. The lift apparatus includes a track and a grabber assembly. The track includes a straight portion and a curved portion. The grabber assembly releasably grasps a refuse container and ascends or descends the track to lift and empty refuse into a body of the refuse vehicle. The reach assembly includes an outer member, a first extendable member, and a second extendable member. The first extendable member is received within an inner volume of the outer member and translates relative to the outer member. The second extendable member is received within an inner volume of the first extendable member and translates relative to the first extendable member. The lift apparatus is fixedly coupled at an outer end of the second extendable member.

First claim

What is claimed is:

1. A reach assembly for a refuse vehicle, the reach assembly comprising:
an outer member fixedly coupled with the refuse vehicle;
a plurality of telescoping members, each of the telescoping members comprising a rack extending in a longitudinal direction, wherein an outermost one of the plurality of telescoping members comprises a lift apparatus;
a plurality of electric motors, each fixedly coupled with one of the telescoping members and configured to drive a pinion that engages the rack of an adjacent one of the telescoping members; and
a plurality of electric brakes, each of the plurality of electric brakes configured to activate to engage an output shaft of a corresponding one of the plurality of electric motors;
wherein the plurality of electric motors are configured to drive the plurality of telescoping members to telescope to translate the lift apparatus.

2. The reach assembly of claim 1 , wherein the plurality of telescoping members comprise:
a first extendable member configured to be received within an inner volume of the outer member and translate relative to the outer member in a longitudinal direction of the outer member, the first extendable member comprising a first rack extending in the longitudinal direction; and
a second extendable member configured to be received within an inner volume of the first extendable member and translate relative to the first extendable member in the longitudinal direction, the second extendable member comprising a second rack extending in the longitudinal direction, wherein the lift apparatus is fixedly coupled at an outer end of the second extendable member.

3. The reach assembly of claim 2 , wherein the plurality of electric motors comprise:
a first electric motor fixedly coupled with the outer member and configured to drive a first pinion configured to engage the first rack to translate the first extendable member relative to the outer member; and
a second electric motor fixedly coupled with the first extendable member and configured to drive a second pinion configured to engage the second rack to translate the second extendable member relative to the first extendable member.

4. The reach assembly of claim 3 , further comprising:
a first gearbox configured to receive rotational kinetic energy from the first electric motor and drive the first pinion to translate the first extendable member relative to the outer member; and
a second gearbox configured to receive rotational kinetic energy from the second electric motor and drive the second pinion to translate the second extendable member relative to the first extendable member.

5. The reach assembly of claim 4 , wherein the plurality of electric brakes comprise:
a first electric brake configured to activate to engage an output shaft of the first electric motor; and
a second electric brake configured to activate to engage an output shaft of the second electric motor.

6. The reach assembly of claim 5 , wherein activation of the first electric brake restricts relative translation of the first extendable member relative to a body of the refuse vehicle and activation of the second electric brake restricts relative translation of the second extendable member relative to the first extendable member.

7. The reach assembly of claim 1 , wherein the outer member comprises:
a plurality of linear bearings fixedly coupled with the outer member;
a first of the plurality of telescoping members comprises:
a first frame member and a second frame member offset from each other in a lateral direction, each of the first frame member and the second frame member extending in the longitudinal direction and defining a longitudinally extending track along laterally outwards facing sides of the first frame member and the second frame member; and
a plurality of linear bearings fixedly coupled with laterally inwards facing sides of the first frame member and the second frame member;
wherein the plurality of linear bearings of the outer member are received within the longitudinally extending tracks to slidably couple the first of the plurality of telescoping members with the outer member; and
a second of the plurality of telescoping members comprises:
a pair of laterally outwards facing surfaces configured to slidably engage the plurality of linear bearings of the first of the plurality of telescoping members to slidably couple the second of the plurality of telescoping members the first of the plurality of telescoping members.

8. The reach assembly of claim 7 , wherein the first of the plurality of telescoping members comprises a pair of laterally extending members that extend between the first frame member and the second frame member, wherein the first frame member, the second frame member, and the pair of laterally extending members define the inner volume of the first of the plurality of telescoping members.

9. The reach assembly of claim 1 , wherein the outer member receives a first end of a first of the plurality of telescoping members through the inner volume of the outer member, wherein a second of the plurality of electric motors is fixedly coupled with the first of the plurality of telescoping members at a second end of the first of the plurality of telescoping members, wherein the second end is opposite the first end of the first of the plurality of telescoping members.

10. The reach assembly of claim 1 , wherein the lift apparatus comprises:
a track comprising a straight portion and a curved portion; and
a grabber assembly configured to releasably grasp a refuse container and ascend or descend the track.

11. The reach assembly of claim 1 , wherein the reach assembly is a fully-electric apparatus configured to only use electrical energy to extend or retract.

12. A refuse vehicle comprising:
a chassis;
a plurality of tractive elements coupled with the chassis and configured to support the refuse vehicle; and
a reach assembly comprising:
an outer member fixedly coupled with the refuse vehicle;
a plurality of telescoping members, each of the telescoping members comprising a rack extending in a longitudinal direction, wherein an outermost one of the plurality of telescoping members comprises a lift apparatus;
a plurality of electric motors, each fixedly coupled with one of the telescoping members and configured to drive a pinion that engages the rack of an adjacent one of the telescoping members; and
a plurality of electric brakes, each of the plurality of electric brakes configured to activate to engage an output shaft of a corresponding one of the plurality of electric motors;
wherein the plurality of electric motors are configured to drive the plurality of telescoping members to telescope to translate the lift apparatus.

13. The refuse vehicle of claim 12 ,
wherein the plurality of telescoping members comprise:
a first extendable member configured to be received within an inner volume of the outer member and translate relative to the outer member in a longitudinal direction of the outer member, the first extendable member comprising a first rack extending in the longitudinal direction; and
a second extendable member configured to be received within an inner volume of the first extendable member and translate relative to the first extendable member in the longitudinal direction, the second extendable member comprising a second rack extending in the longitudinal direction, wherein the lift apparatus is fixedly coupled at an outer end of the second extendable member; and

wherein the plurality of electric motors comprise:
a first electric motor fixedly coupled with the outer member and configured to drive a first pinion con

Assignees

• Oshkosh Corp

Inventors

• Buege Wallace
• Schimke Martin
• Rocholl Joshua D
• Kappers Jerrod
• Kotloski Andrew

Classifications

• B65F3/048 Primary

  Linkages (B65F3/041 takes precedence) · CPC title

• B25J9/102

  Gears specially adapted therefor, e.g. reduction gears (gearings in general F16H) · CPC title

• B25J9/104

  with cables, chains or ribbons · CPC title

• B25J9/1035

  Pinion and fixed rack drivers, e.g. for rotating an upper arm support on the robot base · CPC title

• B25J9/123

  Linear actuators · CPC title