HYBRID BACKHOE LOADER
Field of Invention
The invention generally relates to a hybrid backhoe loader comprising of such
engine and driveline assembly which, preferably on optional selection basis, is
capable of generating power either from fluid fuel or from battery-based
electricity or from both.
This new driveline system of the instant hybrid Backhoe loader is provisioned
to effectively support the said backhoe loader in performing its normal actions,
namely driving and hydraulic operations, by consuming least fluid fuel and in
eco-friendly manner, particularly by working into various modes as per the
specific requirement and demand as follows:
• Engine Only Mode: Driving
• Engine + Motor/Battery Mode: Driving
• Engine + Motor/Battery Mode: Hydraulic Operations
• Motor/Battery Only Mode: Hydraulic Operations [In machine stationary
condition]
• Charging Mode: Battery Charging
The backhoe loader as described herein, due to its unique construction,
compact integration of its components including hybrid engine-electric motor
assembly and novel control/regulation of its functionality, provides a reliable,
efficient, cost-effective alternatives to traditional drive train systems used in
such machines.
3
Background and object of the invention:
A conventional backhoe loader is a heavy construction equipment vehicle,
particularly having a traditional tractor type base vehicle; wherein it is fitted
with a loader-style shovel/bucket on the front side and a backhoe on the back
side.
Backhoe loaders are very common and can be used for a wide variety of tasks:
construction, small demolitions, light transportation of building materials,
powering building equipment, digging holes/excavation, landscaping, breaking
asphalt, and paving roads. Often, the backhoe bucket can also be replaced with
powered attachments such as a breaker, grapple, auger, or a stump grinder.
Single vehicle like machine, which is capable of moving forward/backward and
performing operations like digging and loading at its both sides, is considered
as most versatile construction equipment for urban engineering. This type of
machine is similar to and derived from what is now known as a TLB (TractorLoader-Backhoe), which is to say, an agricultural tractor fitted with a front
loader and rear backhoe attachment.
With the technological advancement, it is the demand of the age to renovate
conventional backhoe loader machines towards making it more fuel efficient
and eco-friendly, more purpose specific, and more dependent on nonconventional power source(s).
There may be few hybrid Backhoe loader known; however, this is relatively new
area of interest to the manufacturing companies and persons skilled in the art.
More research is required to develop effective, safe and functionally reliable
4
backhoe loader, which is one of the most complex heavy construction
equipment frequently used in urban areas.
Prime object of the present invention is a novel effort to provide a hybrid
backhoe loader, comprising a newly designed driveline assembly, is capable of
performing all its functions effectively in any of the following modes of power
transmission, preferably optionally selected:
• Engine Only Mode: Driving
• Engine + Motor/Battery Mode: Driving
• Engine + Motor/Battery Mode: Hydraulic Operations
• Motor/Battery Only Mode: Hydraulic Operations [In machine stationary
condition]
• Charging Mode: Battery Charging
Another object of the present invention is to provide a fuel efficient hybrid
Backhoe loader, wherein the engine assembly is so designed that it can
function in close relation with another power source and support functioning of
all components, namely vehicle-driving and controls thereof, backhoe-side
functions involving hydraulic mechanism and the loader side operations using
the hydraulic systems thereof, without affecting the formal functioning of said
hybrid backhoe loader.
Another object of the present invention is to provide a preferred embodiment of
the hybrid backhoe loader, as disclosed herein, wherein the engine is selected
at ~50HP and power is boosted in the range of 75 to 80HP by hybrid system,
5
adopted therein, which includes electric motor, battery and power electronic
systems.
Description of the invention:
The present invention is to provide a fuel efficient hybrid Backhoe loader,
wherein the engine assembly is so designed that it can function in close
relation with another power source and support functioning of all components,
namely vehicle-driving and controls thereof, backhoe-side functions involving
hydraulic mechanism and the loader side operations using the hydraulic
systems thereof, without affecting the formal functioning of said hybrid
backhoe loader.
The preferred embodiment of the hybrid backhoe loader, as disclosed herein,
wherein the engine is selected at ~50HP and power is boosted in the range of
75 to 80HP by hybrid system, adopted therein, which includes electric motor,
battery and power electronic systems.
Short details of the drawings, which indicate/illustrate the hybrid backhoe
loader machine, its novel construction, and mode of functioning involving its
novel engine-driveline assembly:
Figure 1: The complete representative view of the hybrid backhoe loader,
showing all major components thereof (engine-driveline assembly is not
visible herein);
Figure 2: The assembly of mechanism and tools pertaining to
drive/operate and control of various structural components/assemblies
6
of the instant hybrid backhoe loader, particularly assembled within the
driver’s/operator’s cabin thereof;
Figure 3: Complete schematic view of the driveline assembly of the
present hybrid backhoe loader;
Figure 4: Schematic plan for selecting mode of function of the hybrid
backhoe loader involving its driveline and power transmission thereof.
The hybrid backhoe loader of the present invention, comprising a newly
designed driveline assembly, is capable of performing all its functions
effectively in any of the following modes of power transmission, preferably
optionally selected:
• Engine Only Mode: Driving
• Engine + Motor/Battery Mode: Driving
• Engine + Motor/Battery Mode: Hydraulic Operations
• Motor/Battery Only Mode: Hydraulic Operations [In machine stationary
condition]
• Charging Mode: Battery Charging
Said engine and driveline assembly receives power from two sources: from the
fuel burning engine and/or electric power generated/stored in the said
Backhoe Loader.
The invention generally relates to the engine and driveline assembly used in a
hybrid backhoe loader; wherein the said engine and driveline assembly receives
power from two sources: from the fuel burning engine and/or electric power
generated/stored in the said Backhoe Loader. Said engine and driveline
7
assembly is so constructed that it is capable of generating power either from
fluid fuel or from battery based electricity or from both.
Said backhoe loader is provided with a novel engine assembly which has been
downsized to ~50HP and its power is boosted in the range of 75 to 80HP by
Hybrid system, that is involving the electric power source.
Although the invention has been described with reference to specific
embodiments, this description is not meant to be construed in a limiting sense.
Various modifications of the disclosed embodiments, as well as alternate
embodiments of the invention, will become apparent to persons skilled in the
art upon reference to the description of the invention. It is therefore
contemplated that such modifications can be made without departing from the
spirit or scope of the present invention as defined.

We Claim:
1. Hybrid Backhoe loader, comprising assembly of hybrid backhoe loader
driveline, engine, clutch, pump, motor and battery, wherein said hybrid
backhoe loader driveline-engine assembly, as schematically depicted in
figure 3, is so designed that it can function in close relation with another
power source and support functioning of all components, namely vehicledriving and controls thereof, backhoe operational functions involving
hydraulic mechanism and the loader side operations using the hydraulic
systems thereof, without affecting the formal functioning of said hybrid
backhoe loader.
Figure 3
9
2. Hybrid Backhoe loader, as claimed in claim 1, wherein in the preferred
embodiment of the hybrid backhoe loader the engine assembly is selected
at ~50HP and the power is boosted in the range of 75 to 80HP by hybrid
system adopted therein, which includes electric motor, battery and power
electronic systems.
3. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the engine and driveline assembly used in a hybrid backhoe
loader is capable of functioning, preferably by optional selection basis, in
following working modes as per the specific requirement and demand as
follows:
• Engine Only Mode: Driving
• Engine + Motor/Battery Mode: Driving
• Engine + Motor/Battery Mode: Hydraulic Operations
• Motor/Battery Only Mode: Hydraulic Operations [In machine
stationary condition]
• Charging Mode: Battery Charging
4. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the said engine and driveline assembly receives power from two
sources: from the fuel burning engine and/or electric power
generated/stored in the said Backhoe Loader, wherein said power
transmission provision within the said hybrid backhoe loader is
10
characterized in effectively support to the driving function as well as
hydraulic operations of the backhoe loader.
5. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the engine and driveline assembly used in a hybrid backhoe
loader is capable of functioning, preferably by optional selection of engine
only mode towards driving, depicted as under:
6. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the engine and driveline assembly used in a hybrid backhoe
loader is capable of functioning, preferably by optional selection of
Engine + Motor/Battery Mode towards driving, depicted as under:
11
7. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the engine and driveline assembly used in a hybrid backhoe
loader is capable of functioning, preferably by optional selection of
Engine + Motor/Battery Mode towards hydraulic operations, depicted as
under:
12
8. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the engine and driveline assembly used in a hybrid backhoe
loader is capable of functioning, preferably by optional selection of
Motor/Battery Mode towards hydraulic operations (particularly in
machine stationary condition), depicted as under:
9. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the engine and driveline assembly used in a hybrid backhoe
loader is capable of functioning, preferably by optional selection of
Charging Mode towards Battery Charging, depicted as under:
13
10. Hybrid Backhoe Loader, as claimed in any of the preceding claims,
wherein the inventive steps involved with said hybrid backhoe loader is
indicated/disclosed with the help of following illustrative schematic
drawings, without limiting the overall inventive concept disclosed herein,
particularly into the inventiveness involved with the said drawings or its
schematic application plan, indicated therein: