Combined power take-off and hydraulic pump assembly

Patent metadata

Field	Value
Publication number	US-9404545-B2
Application number	US-201213983357-A
Country	US
Kind code	B2
Filing date	Feb 7, 2012
Priority date	Feb 7, 2011
Publication date	Aug 2, 2016
Grant date	Aug 2, 2016

Abstract

A combined power take-off and hydraulic pump assembly includes a power-take off including a housing portion having an opened end, an input put mechanism that is adapted to be connected to a source of rotational energy, and an output mechanism that is rotatably driven by the input mechanism. The assembly also includes a hydraulic pump including a housing portion having an opened end, a fluid inlet port that is adapted to communicate with a reservoir containing a quantity of relatively low pressure hydraulic fluid, and a pumping mechanism that is rotatably driven by the output mechanism of the power take-off. An intermediate housing has a first opened end that cooperates with the opened end of the housing portion of the power take-off and a second opened end that cooperates with the opened end of the housing portion of the hydraulic pump. The intermediate housing also has a fluid outlet port that communicates with the pumping mechanism and that is adapted to communicate with a hydraulically driven device. The intermediate housing may also support a bearing that, in turn, supports a portion of the output mechanism of the power take-off.

First claim

What is claimed is:

1. A combined power take-off and hydraulic pump assembly comprising:
a power take-off including a housing portion having an opened end;
a hydraulic pump including a housing portion having an opened end; and
an intermediate housing having a first opened end that cooperates with the opened end of the housing portion of the power take-off and a second opened end that cooperates with the opened end of the housing portion of the hydraulic pump, wherein the hydraulic pump is connected to be driven by the power take-off, wherein:
the intermediate housing includes a mounting structure that allows the hydraulic pump and the intermediate housing to be positioned as a unit at a desired rotational orientation relative to the power take-off; and
the mounting structure includes a groove provided in the intermediate housing and a clamping bracket that extends within the groove and is connected to the housing portion of the power take-off.

2. The combined power take-off and hydraulic pump assembly defined in claim 1 wherein the power take-off includes an input mechanism that is adapted to be connected to the source of rotational energy and an output mechanism that is connected to the hydraulic pump.

3. The combined power take-off and hydraulic pump assembly defined in claim 2 wherein the output mechanism of the power take-off is supported on both the housing portion of the power take-off and on the intermediate housing.

4. The combined power take-off and hydraulic pump assembly defined in claim 2 wherein the power take-off further includes a clutch for selectively connecting the output mechanism to the input mechanism.

5. The combined power take-off and hydraulic pump assembly defined in claim 1 wherein the hydraulic pump includes a fluid inlet port that is adapted to communicate with a reservoir containing a quantity of relatively low pressure hydraulic fluid and a pumping mechanism that is connected to be rotatably driven by the power take-off.

6. The combined power take-off and hydraulic pump assembly defined in claim 5 wherein the intermediate housing has a fluid outlet port that communicates with the pumping mechanism and that is adapted to communicate with a hydraulically driven device.

7. The combined power take-off and hydraulic pump assembly defined in claim 1 wherein the housing portion of the power take-off and the intermediate housing are formed from a single piece of material.

8. The combined power take-off and hydraulic pump assembly defined in claim 1 wherein the mounting structure includes first and second clamping brackets that each extend within the groove and are each connected to the housing portion of the power take-off.

9. A combined power take-off and hydraulic pump assembly comprising:
a power take-off including a housing portion having an opened end, an input mechanism that is adapted to be connected to a source of rotational energy, and an output mechanism that is rotatably driven by the input mechanism;
a hydraulic pump including a housing portion having an opened end, a fluid inlet port that is adapted to communicate with a reservoir containing a quantity of relatively low pressure hydraulic fluid, and a pumping mechanism that is connected to be rotatably driven by the output mechanism of the power take-off; and
an intermediate housing having a first opened end that cooperates with the opened end of the housing portion of the power take-off and a second opened end that cooperates with the opened end of the housing portion of the hydraulic pump, the intermediate housing having a fluid outlet port that communicates with the pumping mechanism and that is adapted to communicate with a hydraulically driven device; wherein
the intermediate housing includes a mounting structure that allows the hydraulic pump and the intermediate housing to be positioned as a unit at a desired rotational orientation relative to the power take-off; and
the mounting structure includes a groove provided in the intermediate housing and a clamping bracket that extends within the groove and is connected to the housing portion of the power take-off.

10. The combined power take-off and hydraulic pump assembly defined in claim 9 wherein the output mechanism of the power take-off is supported on both the housing portion of the power take-off and on the intermediate housing.

11. The combined power take-off and hydraulic pump assembly defined in claim 9 wherein the power take-off further includes a clutch for selectively connecting the output mechanism to the input mechanism.

12. The combined power take-off and hydraulic pump assembly defined in claim 9 wherein the housing portion of the power take-off and the intermediate housing are formed from a single piece of material.

13. The combined power take-off and hydraulic pump assembly defined in claim 9 wherein the mounting structure includes first and second clamping brackets that each extend within the groove and are each connected to the housing portion of the power take-off.

14. A combined power take-off and hydraulic pump assembly comprising:
a power take-off including a housing portion having an opened end;
a hydraulic pump including a housing portion supporting a pumping mechanism that is driven by the power take-off, the housing portion of the hydraulic pump having (1) an opened end and (2) a fluid inlet port provided therein that communicates with the pumping mechanism and is adapted to communicate with a reservoir containing hydraulic fluid; and
an intermediate housing having (1) a first opened end that cooperates with the opened end of the housing portion of the power take-off, (2) a second opened end that cooperates with the opened end of the housing portion of the hydraulic pump, and (3) a fluid outlet port provided therein that communicates with the pumping mechanism and is adapted to communicate with a hydraulically driven device located externally of the combined power take-off and hydraulic pump assembly; wherein
the intermediate housing includes a mounting structure that allows the hydraulic pump and the intermediate housing to be positioned as a unit at a desired rotational orientation relative to the power take-off; and
the mounting structure includes a groove provided in the intermediate housing and a clamping bracket that extends within the groove and is connected to the housing portion of the power take-off.

15. The combined power take-off and hydraulic pump assembly defined in claim 14 wherein the pumping mechanism is directly driven by the power take-off.

16. The combined power take-off and hydraulic pump assembly defined in claim 14 wherein the pumping mechanism is selectively driven through a clutch assembly by the power take-off.

17. The combined power take-off and hydraulic pump assembly defined in claim 14 wherein the housing portion of the hydraulic pump and the intermediate housing are formed from a single piece of material.

18. The combined power take-off and hydraulic pump assembly defined in claim 14 wherein the mounting structure includes first and second clamping brackets that each extend within the groove and are each connected to the housing portion of the power take-off.

Assignees

• Bohn James E
• Hannaford Darrel
• Rang Brian L
• Parker Hannifin Corp

Inventors

• Bohn James E
• Hannaford Darrel
• Rang Brian L

Classifications

• F04B39/121

  Casings · CPC title

• F04B53/22

  Arrangements for enabling ready assembly or disassembly · CPC title

• F16D33/00 Primary

  Rotary fluid couplings or clutches of the hydrokinetic type · CPC title

• F04B27/0891

  casings, housings · CPC title

• F04B17/05 Primary

  driven by internal-combustion engines · CPC title