WO2015072995A1 - Compound transmission configured for in vehicle range transmission service - Google Patents
Compound transmission configured for in vehicle range transmission service Download PDFInfo
- Publication number
- WO2015072995A1 WO2015072995A1 PCT/US2013/070021 US2013070021W WO2015072995A1 WO 2015072995 A1 WO2015072995 A1 WO 2015072995A1 US 2013070021 W US2013070021 W US 2013070021W WO 2015072995 A1 WO2015072995 A1 WO 2015072995A1
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- WO
- WIPO (PCT)
- Prior art keywords
- transmission section
- support tool
- service support
- countershaft
- axially extending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H2057/0062—Tools specially adapted for assembly of transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02026—Connection of auxiliaries with a gear case; Mounting of auxiliaries on the gearbox
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02043—Gearboxes for particular applications for vehicle transmissions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
- F16H37/04—Combinations of toothed gearings only
- F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
- F16H37/043—Combinations of toothed gearings only change gear transmissions in group arrangement without gears having orbital motion
Definitions
- the present invention relates to range transmission design for in chassis service. BACKGROUND OF THE INVENTION
- chassis service of the range transmission section of compound transmissions is a common practice because it saves time and cost relative to removing the range transmission section or the complete compound transmission from the vehicle.
- chassis service typically involves installing a number of restraining clips through an access cover located at the top of the range transmission section. Access to this opening may be difficult due to the proximity of chassis components, such as the body of the vehicle and the frame. The process also involves removal of internal fasteners and replacement with additional restraining clips. Additionally, after the range housing is removed several additional clips must be installed to secure internal components.
- Out of chassis service typically involves using holding covers that secure range transmission section internal components to the range housing. Once the holding covers are installed, the entire range transmission section may be removed; however, owing to the fact that the range transmission section can weigh in excess of 200 LBS, removal and
- the present invention relates to an improved range transmission design for in chassis service.
- a method for providing a compound transmission comprises the steps of, providing a transmission housing, providing a main transmission section with at least one gear ratio, wherein the main transmission section is located within and supported by the transmission housing and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity, providing a range transmission section with at least one gear ratio, wherein the range transmission section is provided with at least one countershaft that internally defines a second axially extending service support tool receiving cavity, and providing the at least one countershaft of the main transmission section and the at least one countershaft of the range transmission section with a co-axial relationship so that the first and second axially extending service support tool cavities each define at least a portion of a tool receiving pathway that is dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, can support the at least one counter shaft of the range transmission section and associated gears during service.
- a vehicle compound transmission comprises a transmission housing, a main transmission section, and a range transmission section.
- the main transmission section is provided with at least one gear ratio, is located within and supported by the transmission housing, and is provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity.
- the range transmission section is provided with at least one gear ratio and at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity.
- the first and second axially extending service support tool receiving cavities are dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, supports the at least one counter shaft of the range
- a method for supporting at least one countershaft of a range transmission section of a compound transmission during in vehicle service comprises the step of making the service support tool receiving cavities accessible, inserting a service support tool into the at least one first and second axially extending service support tool receiving cavities, and using the service tool in combination with the at least one counter shaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
- a method for providing a compound transmission comprises the steps of, providing a transmission housing, providing a main transmission section with at least one gear ratio, wherein the main transmission section is located within and supported by the transmission housing and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity, providing a range transmission section with at least one gear ratio, wherein the range transmission section is provided with at least one countershaft that internally defines a second axially extending service support tool receiving cavity, and providing the at least one countershaft of the main transmission section and the at least one countershaft of the range transmission section with a co-axial relationship so that the first and second axially extending service support tool cavities each define at least a portion of a tool receiving pathway that is dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, can support the at least one counter shaft of the range transmission section and associated gears during service.
- the method for providing a compound transmission further includes the steps of providing the service support tool and using the service support tool in combination with the at least one countershaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
- a vehicle compound transmission comprises a transmission housing, a main transmission section, and a range transmission section.
- the main transmission section is provided with at least one gear ratio, is located within and supported by the transmission housing, and is provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity.
- the range transmission section is provided with at least one gear ratio and at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity.
- the first and second axially extending service support tool receiving cavities are dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, supports the at least one counter shaft of the range
- the vehicle compound transmission further comprises the service support tool that is received by the first and second axially extending service support tool receiving cavities and, which, in combination with the at least one countershaft of the main
- transmission section supports the at least one counter shaft of the range transmission section and associated gears during service.
- a method for supporting at least one countershaft of a range transmission section of a compound transmission during in vehicle service comprises the step of making the service support tool receiving cavities accessible, inserting a service support tool into the at least one first and second axially extending service support tool receiving cavities, and using the service tool in combination with the at least one counter shaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
- FIG. 1 depicts a sectional view of a compound transmission according to one embodiment.
- FIG. 2 depicts a sectional view of a compound transmission according to one embodiment.
- FIG. 3 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
- FIG. 4 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
- FIG. 5 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
- FIG. 6 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
- FIG. 1 illustrates a compound transmission 10 according to one embodiment of the present invention.
- the compound transmission 10 is provided with a main transmission section 20 and a range transmission section 40, also known as an auxiliary transmission section, located within and supported by a housing 1 1 of the compound transmission 10.
- the housing 11 is provided with a range housing section 1 1a and a main housing section 1 lb.
- the main transmission section 20 includes an input shaft 25, a plurality of gears, as at 26, a countershaft 27, and an output shaft 28.
- the input shaft 25 receives torque from engine output shaft (not shown).
- the input shaft 25 transfers torque to the countershaft 27 and the countershaft 27 transfers torque to the output shaft 28. Additionally, those of ordinary skill in the art will further appreciate that the input shaft 25 may transfer torque directly to the output shaft 28 when the main transmission section 20 is operating in direct drive.
- At least one gear ratio is available to the main transmission section 20.
- six gear ratios are available to the main transmission section 20.
- One of the six gear ratios is utilized when the main transmission section 20 is operated in direct drive and the other five gear ratios are utilized when the countershaft 27 receives torque from the input shaft 25 and transfers torque to the output shaft 28, via gears 46.
- the range transmission section 40 includes a plurality of gears, as at 46, a counter shaft 47, and an output shaft 48.
- gears 46 the countershaft 47 receives torque from the output shaft 28 of the main transmission section and transfers torque to the output shaft 48.
- the output shaft 28 may transfer torque directly to the output shaft 48 when the range transmission section 40 is operating in direct drive.
- At least one and preferably at least two gear ratios are available to the range transmission section 40.
- the range transmission 40section is provided with two gear ratios. The first gear ratio is utilized when the range transmission section is operated in direct drive and the second gear ratio is utilized when the countershaft 47 receives torque from the output shaft 28 of the main transmission section and transfers torque to the output shaft 48, via gears 46. It will be apparent to those of ordinary skill in the art that the total number of available gear ratios available to the transmission 10 is equal to the product of the gear ratios available to the main transmission section 20 and the gear ratios available to the range transmission section 40.
- the compound transmission 10 is configured for simple in vehicle service of the range transmission section 40. According to another aspect of the present embodiment, the compound transmission 10 is configured so that a service support tool 100 (FIGS. 3-6) in combination with the countershaft 27 of the main transmission section 20 supports the at least one counter shaft 47 of the range transmission section 40 and any associated gears 46 during service.
- a service support tool 100 FIGS. 3-6
- the countershaft 27 of the main transmission section 20 internally defines a first axially extending service support tool receiving cavity 21.
- the countershaft 47 of the range transmission section 40 internally defines a second axially extending service support tool receiving cavity 41 that is coaxial with the first axially extending service support tool receiving cavity 21.
- the first and second axially extending service support tool receiving cavities 21, 41 each define at least a portion of a tool receiving pathway 12 in the compound transmission 10 that is dimensioned to receive a service support tool 100.
- FIGS. 2-6 using the service support tool 100 to support the countershaft 47 of the range transmission section 40 during vehicle service is depicted.
- the method commences with making the service support tool receiving cavities 21 accessible. As shown by a comparison of FIGS. 2 and 3, in the illustrated transmission 10, this may involve removing a bearing retainer 70 for the second counter shaft 47; however, this will depend on the design of the transmission.
- the service support tool 100 is installed into the first and second service support tool receiving cavities 21, 41. As shown, the service support tool 100 is an elongated rod.
- the service support tool 100 in combination with the countershaft 27 of the main transmission section 20 may be used to support the counter shaft 47, gears 46, and the output shaft 48. Thereafter, to provide better access to the counter shaft 47, gears 46, and the output shaft 48, during service, a variety of range transmission section components can be removed, including, for example, and not limitation, the access cover 71 for the range transmission section 40, an air cylinder cover 72 for the range transmission section 40, a range shift fork 73 for the range transmission section 40, the output bearings 74 for the output shaft 48 and the range housing 1 la may be removed, as shown in FIGS. 2-6. With the service support tool 100 installed, the range housing 1 la is no longer needed to support the counter shaft 47, gears 46, and the output shaft 48 during service.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- General Details Of Gearings (AREA)
Abstract
The present invention relates to a vehicle compound transmission that includes transmission housing, a main transmission section, and a range transmission section. The main transmission section is provided with at least one gear ratio, is located within and supported by the transmission housing, and is provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity. The range transmission section is provided with at least one gear ratio and at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity. The first and second axially extending service support tool receiving cavities are dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, supports the at least one counter shaft of the range transmission section and associated gears during service.
Description
COMPOUND TRANSMISSION CONFIGURED FOR IN VEHICLE RANGE
TRANSMISSION SERVICE
FIELD OF THE INVENTION
The present invention relates to range transmission design for in chassis service. BACKGROUND OF THE INVENTION
In chassis service of the range transmission section of compound transmissions is a common practice because it saves time and cost relative to removing the range transmission section or the complete compound transmission from the vehicle.
In chassis service typically involves installing a number of restraining clips through an access cover located at the top of the range transmission section. Access to this opening may be difficult due to the proximity of chassis components, such as the body of the vehicle and the frame. The process also involves removal of internal fasteners and replacement with additional restraining clips. Additionally, after the range housing is removed several additional clips must be installed to secure internal components.
Out of chassis service typically involves using holding covers that secure range transmission section internal components to the range housing. Once the holding covers are installed, the entire range transmission section may be removed; however, owing to the fact that the range transmission section can weigh in excess of 200 LBS, removal and
reinstallation of the range transmission under the vehicle can be difficult.
The present invention relates to an improved range transmission design for in chassis service.
SUMMARY OF THE INVENTION
According to one embodiment of the present invention, a method for providing a compound transmission comprises the steps of, providing a transmission housing, providing a main transmission section with at least one gear ratio, wherein the main transmission section is located within and supported by the transmission housing and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity, providing a range transmission section with at least one gear ratio, wherein the range transmission section is provided with at least one countershaft that internally defines a second axially extending service support tool receiving cavity, and providing the at least one countershaft of the main transmission section and the at least one countershaft of the range transmission section with a co-axial relationship so that the first and second axially extending service support tool cavities each define at least a portion of a tool receiving pathway that is dimensioned to receive a service support tool, which, in combination with the at least one
countershaft of the main transmission section, can support the at least one counter shaft of the range transmission section and associated gears during service.
According to another embodiment of the present embodiment, a vehicle compound transmission comprises a transmission housing, a main transmission section, and a range transmission section. The main transmission section is provided with at least one gear ratio, is located within and supported by the transmission housing, and is provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity. The range transmission section is provided with at least one gear ratio and at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity.
The first and second axially extending service support tool receiving cavities are dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, supports the at least one counter shaft of the range
transmission section and associated gears during service.
According to another embodiment of the present invention, a method for supporting at least one countershaft of a range transmission section of a compound transmission during in vehicle service, wherein the compound transmission includes a transmission housing, a main transmission section that is located within and supported by the transmission housing, provided with at least one gear ratio, and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity, and the range transmission section that is provided with at least one gear ratio and the at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity, comprises the step of making the service support tool receiving cavities accessible, inserting a service support tool into the at least one first and second axially extending service support tool receiving cavities, and using the service tool in combination with the at least one counter shaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
ASPECTS OF THE INVENTION
According to one aspect of the present invention, a method for providing a compound transmission comprises the steps of, providing a transmission housing, providing a main transmission section with at least one gear ratio, wherein the main transmission section is located within and supported by the transmission housing and provided with at least one countershaft that internally defines a first axially extending service support tool receiving
cavity, providing a range transmission section with at least one gear ratio, wherein the range transmission section is provided with at least one countershaft that internally defines a second axially extending service support tool receiving cavity, and providing the at least one countershaft of the main transmission section and the at least one countershaft of the range transmission section with a co-axial relationship so that the first and second axially extending service support tool cavities each define at least a portion of a tool receiving pathway that is dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, can support the at least one counter shaft of the range transmission section and associated gears during service.
Preferably, the method for providing a compound transmission further includes the steps of providing the service support tool and using the service support tool in combination with the at least one countershaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
According to another aspect of the present embodiment, a vehicle compound transmission comprises a transmission housing, a main transmission section, and a range transmission section. The main transmission section is provided with at least one gear ratio, is located within and supported by the transmission housing, and is provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity. The range transmission section is provided with at least one gear ratio and at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity. The first and second axially extending service support tool receiving cavities are dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, supports the at least one counter shaft of the range
transmission section and associated gears during service.
Preferably the vehicle compound transmission further comprises the service support tool that is received by the first and second axially extending service support tool receiving cavities and, which, in combination with the at least one countershaft of the main
transmission section, supports the at least one counter shaft of the range transmission section and associated gears during service.
According to another aspect of the present invention, a method for supporting at least one countershaft of a range transmission section of a compound transmission during in vehicle service, wherein the compound transmission includes a transmission housing, a main transmission section that is located within and supported by the transmission housing,
provided with at least one gear ratio, and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity, and the range transmission section that is provided with at least one gear ratio and the at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity, comprises the step of making the service support tool receiving cavities accessible, inserting a service support tool into the at least one first and second axially extending service support tool receiving cavities, and using the service tool in combination with the at least one counter shaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 depicts a sectional view of a compound transmission according to one embodiment.
FIG. 2 depicts a sectional view of a compound transmission according to one embodiment.
FIG. 3 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
FIG. 4 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
FIG. 5 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
FIG. 6 depicts a sectional view of a compound transmission and a service support tool according to one embodiment.
DETAILED DESCRIPTON OF THE INVENTION
FIG. 1 illustrates a compound transmission 10 according to one embodiment of the present invention. As shown therein, the compound transmission 10 is provided with a main transmission section 20 and a range transmission section 40, also known as an auxiliary transmission section, located within and supported by a housing 1 1 of the compound transmission 10. As shown, the housing 11 is provided with a range housing section 1 1a and a main housing section 1 lb.
The main transmission section 20 includes an input shaft 25, a plurality of gears, as at 26, a countershaft 27, and an output shaft 28. Those of ordinary skill in the art will appreciate that the input shaft 25 receives torque from engine output shaft (not shown).
Those of ordinary skill will also appreciate that via gears 26, the input shaft 25 transfers
torque to the countershaft 27 and the countershaft 27 transfers torque to the output shaft 28. Additionally, those of ordinary skill in the art will further appreciate that the input shaft 25 may transfer torque directly to the output shaft 28 when the main transmission section 20 is operating in direct drive.
At least one gear ratio is available to the main transmission section 20. In the presently illustrated embodiment, six gear ratios are available to the main transmission section 20. One of the six gear ratios is utilized when the main transmission section 20 is operated in direct drive and the other five gear ratios are utilized when the countershaft 27 receives torque from the input shaft 25 and transfers torque to the output shaft 28, via gears 46.
The range transmission section 40 includes a plurality of gears, as at 46, a counter shaft 47, and an output shaft 48. Those of ordinary skill in the art will appreciate that via gears 46, the countershaft 47 receives torque from the output shaft 28 of the main transmission section and transfers torque to the output shaft 48. Additionally, those of ordinary skill in the art will further appreciate that the output shaft 28 may transfer torque directly to the output shaft 48 when the range transmission section 40 is operating in direct drive.
At least one and preferably at least two gear ratios are available to the range transmission section 40. In the presently preferred embodiment, the range transmission 40section is provided with two gear ratios. The first gear ratio is utilized when the range transmission section is operated in direct drive and the second gear ratio is utilized when the countershaft 47 receives torque from the output shaft 28 of the main transmission section and transfers torque to the output shaft 48, via gears 46. It will be apparent to those of ordinary skill in the art that the total number of available gear ratios available to the transmission 10 is equal to the product of the gear ratios available to the main transmission section 20 and the gear ratios available to the range transmission section 40.
According to one aspect of the present embodiment, the compound transmission 10 is configured for simple in vehicle service of the range transmission section 40. According to another aspect of the present embodiment, the compound transmission 10 is configured so that a service support tool 100 (FIGS. 3-6) in combination with the countershaft 27 of the main transmission section 20 supports the at least one counter shaft 47 of the range transmission section 40 and any associated gears 46 during service.
As FIG. 1 shows, the countershaft 27 of the main transmission section 20 internally defines a first axially extending service support tool receiving cavity 21. As FIG. 1 also
shows, the countershaft 47 of the range transmission section 40 internally defines a second axially extending service support tool receiving cavity 41 that is coaxial with the first axially extending service support tool receiving cavity 21. Also shown therein, the first and second axially extending service support tool receiving cavities 21, 41 each define at least a portion of a tool receiving pathway 12 in the compound transmission 10 that is dimensioned to receive a service support tool 100.
Turning now to FIGS. 2-6, using the service support tool 100 to support the countershaft 47 of the range transmission section 40 during vehicle service is depicted. The method commences with making the service support tool receiving cavities 21 accessible. As shown by a comparison of FIGS. 2 and 3, in the illustrated transmission 10, this may involve removing a bearing retainer 70 for the second counter shaft 47; however, this will depend on the design of the transmission. Next, the service support tool 100 is installed into the first and second service support tool receiving cavities 21, 41. As shown, the service support tool 100 is an elongated rod.
Once installed, the service support tool 100 in combination with the countershaft 27 of the main transmission section 20 may be used to support the counter shaft 47, gears 46, and the output shaft 48. Thereafter, to provide better access to the counter shaft 47, gears 46, and the output shaft 48, during service, a variety of range transmission section components can be removed, including, for example, and not limitation, the access cover 71 for the range transmission section 40, an air cylinder cover 72 for the range transmission section 40, a range shift fork 73 for the range transmission section 40, the output bearings 74 for the output shaft 48 and the range housing 1 la may be removed, as shown in FIGS. 2-6. With the service support tool 100 installed, the range housing 1 la is no longer needed to support the counter shaft 47, gears 46, and the output shaft 48 during service.
The present description depicts specific examples to teach those skilled in the art how to make and use the best mode of the invention. The detailed descriptions of the above embodiments are not exhaustive descriptions of all embodiments contemplated by the inventors to be within the scope of the invention. By way of example, and not limitation, the principals of the present embodiment could be applied to compound transmission that includes a main transmission section and a range transmission section that are each provided with multiple countershafts.
Persons skilled in the art will recognize that certain elements of the above-described embodiments may variously be combined or eliminated to create further embodiments, and such further embodiments fall within the scope and teachings of the invention. It will also be
apparent to those of ordinary skill in the art that the above-described embodiments may be combined in whole or in part to create additional embodiments within the scope and teachings of the invention. Thus, although specific embodiments of, and examples for, the invention are described herein for illustrative purposes, various equivalent modifications are possible within the scope of the invention, as those skilled in the relevant art will recognize. Accordingly, the scope of the invention is determined from the appended claims and equivalents thereof.
Claims
1. A method for providing a compound transmission, comprising the steps of:
providing a transmission housing;
providing a main transmission section with at least one gear ratio, wherein the main transmission section is located within and supported by the transmission housing and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity;
providing a range transmission section with at least one gear ratio, wherein the range transmission section is provided with at least one countershaft that internally defines a second axially extending service support tool receiving cavity; and
providing the at least one countershaft of the main transmission section and the at least one countershaft of the range transmission section with a co-axial relationship so that the first and second axially extending service support tool cavities each define at least a portion of a tool receiving pathway that is dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, can support the at least one counter shaft of the range transmission section and associated gears during service.
2. The method for providing a compound transmission according to claim 1, further including the steps of providing the service support tool and using the service support tool in combination with the at least one countershaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
3. A vehicle compound transmission, comprising:
a transmission housing;
a main transmission section with at least one gear ratio, wherein the main transmission section is located within and supported by the transmission housing and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity;
a range transmission section with at least one gear ratio, wherein
the range transmission section is provided with at least one
countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity; and
the first and second axially extending service support tool receiving cavities are dimensioned to receive a service support tool, which, in combination with the at least one countershaft of the main transmission section, can support the at least one counter shaft of the range transmission section and associated gears during service.
4. The vehicle compound transmission according to claim 3, further comprising the service support tool that is received by the first and second axially extending service support tool receiving cavities and, which, in combination with the at least one countershaft of the main transmission section, supports the at least one counter shaft of the range transmission section and associated gears during service.
5. A method for supporting at least one countershaft of a range transmission section of a compound transmission during in vehicle service, wherein the compound transmission includes a transmission housing, a main transmission section that is located within and supported by the transmission housing, provided with at least one gear ratio, and provided with at least one countershaft that internally defines a first axially extending service support tool receiving cavity, and the range transmission section that is provided with at least one gear ratio and the at least one countershaft that internally defines a second axially extending service support tool receiving cavity that is coaxial with the first axially extending service support tool receiving cavity, wherein the method comprises the step of:
making the service support tool receiving cavities accessible;
inserting a service support tool into the at least one first and second axially extending service support tool receiving cavities; and
using the service tool in combination with the at least one counter shaft of the main transmission section to support the at least one counter shaft of the range transmission section and associated gears during service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2013/070021 WO2015072995A1 (en) | 2013-11-14 | 2013-11-14 | Compound transmission configured for in vehicle range transmission service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2013/070021 WO2015072995A1 (en) | 2013-11-14 | 2013-11-14 | Compound transmission configured for in vehicle range transmission service |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015072995A1 true WO2015072995A1 (en) | 2015-05-21 |
Family
ID=53057778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2013/070021 Ceased WO2015072995A1 (en) | 2013-11-14 | 2013-11-14 | Compound transmission configured for in vehicle range transmission service |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2015072995A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397720A (en) * | 2018-04-18 | 2019-11-01 | 铃木株式会社 | Automatic transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409859A (en) * | 1981-04-30 | 1983-10-18 | Dana Corporation | Shift-rail interlock bracket for compound transmission |
| US5390561A (en) * | 1993-05-20 | 1995-02-21 | Eaton Corporation | Compound transmission |
| US5421216A (en) * | 1993-05-14 | 1995-06-06 | Eaton Corp | Compound transmission having hybrid single and twin countershafts |
| US5546823A (en) * | 1993-05-20 | 1996-08-20 | Eaton Corporation | High-capacity compound transmission |
-
2013
- 2013-11-14 WO PCT/US2013/070021 patent/WO2015072995A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409859A (en) * | 1981-04-30 | 1983-10-18 | Dana Corporation | Shift-rail interlock bracket for compound transmission |
| US5421216A (en) * | 1993-05-14 | 1995-06-06 | Eaton Corp | Compound transmission having hybrid single and twin countershafts |
| US5390561A (en) * | 1993-05-20 | 1995-02-21 | Eaton Corporation | Compound transmission |
| US5546823A (en) * | 1993-05-20 | 1996-08-20 | Eaton Corporation | High-capacity compound transmission |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397720A (en) * | 2018-04-18 | 2019-11-01 | 铃木株式会社 | Automatic transmission |
| CN110397720B (en) * | 2018-04-18 | 2022-08-26 | 铃木株式会社 | Automatic transmission |
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