Mobile concrete mixer and method of assembling the concrete mixer

Abstract

The present invention provides a concrete mixer and a method for assembling a concrete mixer The concrete mixer includes, a plurality of axles, wherein each of the plurality of axles is adapted to propel at least two wheels, a chassis mounted on the plurality of axles; a mixing drum mounted on the chassis, the mixing drum adapted to mix a plurality of materials to produce concrete; a material feeding system coupled to the chassis, the material feeding system is adapted to, collect the plurality of materials from a stored location and feed the collected plurality of materials to the mixing drum; a hydraulic system coupled to the mixing drum and at least one of the plurality of axles; a cabin mounted on a front portion of the chassis, the cabin provides one or more control units to a user to operate the concrete mixer; and an engine mounted on the chassis, the engine adapted to power the hydraulic system in order to operate the concrete mixer.

Description

MOBILE CONCRETE MIXER AND METHOD OF ASSEMBLING THE CONCRETE MIXERCROSS-REFERENCE TO RELATED DISCLOSURE

[0001] This application claims priority to the Indian Patent Application No. 202441060058, titled "MOBILE CONCRETE MIXER AND METHOD OF ASSEMBLING THE CONCRETE MIXER", filed with the Indian Patent Office on August 08, 2024, the entire contents of which are incorporated herein by reference.FIELD OF THE INVENTION

[0002] The present invention relates to a concrete mixer. In particular, the present invention relates to the concrete mixer and a method for assembling the mobile concrete mixer, for production of concrete.BACKGROUND OF THE INVENTION

[0003] The conventional concrete mixers in the public domain are heavy due to usage of multiple components having various configurations, which are highlighted below.

[0004] For example, a chassis used in the conventional concrete mixer is designed with thick and heavy structures such as support frames for drum system, heavy swivel gear & motor system for drum swiveling. These chassis structures and swivel system result in a greater weight and complex design of the concrete mixer.

[0005] Further, the conventional concrete mixers incorporate drum lift function in relation to a mixing drum of the concrete mixer in order to facilitate tilting of the mixing drum for the purpose of unloading of the plurality of the materials. By doing so, the concrete mixer requires additional components, thereby adding to the weight of the concrete mixer.

[0006] Further, a loading arm includes a bucket fitted with hydraulic cylinders for bucket tilting and bucket sliding gate operation for loading and unloading theplurality of the materials into the mixing drum. The hydraulic cylinder requires more power for the operation of the loading and unloading the plurality of the materials, which results in additional power usage of the engine.

[0007] Further, in the conventional concrete mixers, the mixing drum is operated in a closed loop hydraulic system. The closed loop hydraulic system is structured with a complex design, which is expensive to manufacture and to maintain. The usage of the closed loop hydraulic systems results in high energy loss due to frictional resistance and heat generation within the hydraulic components.

[0008] Further, conventional concrete mixers include a separate charging hopper to dispense various material to the drum. The separate charging hopper results in a greater number of parts and eventually the weight of the concrete mixer also increases.

[0009] Further, another challenge with the conventional concrete mixers of similar size is the high-capacity engine for the operation and mobility of the concrete mixer. The high-capacity engine and its peripheral components results in the unwanted energy loss and power redemption of the engine. Further, the high-capacity engine requires complex infrastructure for the operation of the concrete mixer.

[0010] Further, a plurality of axles used in conventional concrete mixers are equipped with full-time four-wheel drive configuration, these have complexity in terms of cost and weight and also results in unwanted energy loss.

[0011] In view of the above, there is a dire requirement for a concrete mixer which solves at least a few of the drawbacks mentioned above.SUMMARY OF THE INVENTION

[0012] One or more embodiments of the present invention provides a concrete mixer and a method for assembling the concrete mixer.

[0013] In one aspect of the present invention a concrete mixer is provided. The concrete mixer includes a plurality of axles, wherein each of the plurality of axles is adapted to propel at least two wheels, a chassis mounted on the plurality of axles; a mixing drum mounted on the chassis, the mixing drum adapted to mix a plurality of materials to produce concrete; a material feeding system coupled to the chassis, the material feeding system is adapted to, collect the plurality of materials from a stored location and feed the collected plurality of materials to the mixing drum; a hydraulic system coupled to the mixing drum and at least one of the plurality of axles; a cabin mounted on a front portion of the chassis, the cabin provides one or more control units to a user to operate the concrete mixer; and an engine mounted on the chassis, the engine adapted to power the hydraulic system in order to operate the concrete mixer.

[0014] In another aspect, a method for assembling a concrete mixer is provided. The method includes the steps of, mounting, a chassis on a plurality of axles, wherein each of the plurality of axles is adapted to propel at least two wheels; mounting, a mixing drum on the chassis, wherein the mixing drum adapted to mix a plurality of materials to produce concrete; coupling, a material feeding system to the chassis, wherein the material feeding system adapted to, collect the plurality of materials from a stored location and feed the collected plurality of materials to the mixing drum; coupling, a hydraulic system to the mixing drum and the plurality of axles; mounting, a cabin on a front portion of the chassis, wherein the cabin provides one or more control units to a user to operate the concrete mixer; and mounting, an engine on the chassis, wherein the engine adapted to power the hydraulic system in order to operate the concrete mixer.

[0015] Other features and aspects of this invention will be apparent from the following description and the accompanying drawings. The features and advantages described in this summary and in the following detailed description are not all- inclusive, and particularly, many additional features and advantages will be apparent to one of ordinary skill in the relevant art, in view of the drawings, specification, andclaims hereof. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes and may not have been selected to delineate or circumscribe the inventive subject matter, resort to the claims being necessary to determine such inventive subject matter.BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated herein, and constitute a part of this disclosure, illustrate exemplary embodiments of the disclosed methods and systems in which like reference numerals refer to the same parts throughout the different drawings. Components in the drawings are not necessarily to scale, emphasis instead being placed upon clearly illustrating the principles of the present disclosure. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that disclosure of such drawings includes disclosure of electrical components, electronic components or circuitry commonly used to implement such components.

[0017] FIG. 1 illustrates a concrete mixer for managing a plurality of materials for production of concrete, according to various embodiments of the present invention.

[0018] FIG. 2a and 2b are exploded views of a plurality of axels of the concrete mixer, according to various embodiments of the present invention.

[0019] FIG. 3 is a side view of a chassis of the concrete mixer, according to various embodiments of the present invention.

[0020] FIG. 4 is an isometric view of a mixing drum and a material feeding system of the concrete mixer, according to various embodiments of the present invention.

[0021] FIG. 5a and 5b are exploded views of a hydraulic system and an engine of the concrete mixer, according to various embodiments of the present invention.

[0022] FIG. 6 is an exploded view of a cabin of the concrete mixer, according to various embodiments of the present invention.

[0023] FIG. 7 is a flow diagram illustrating a method for assembling a concrete mixer, according to various embodiments of the present invention.

[0024] The foregoing shall be more apparent from the following detailed description of the invention.DETAILED DESCRIPTION OF THE INVENTION

[0025] The detailed description of various exemplary embodiments of the disclosure is described with reference to the accompanying drawings. It should be noted that the embodiments are described in such details as to communicate the disclosure. However, the number of details provided in the present disclosure is not intended to limit the anticipated variations of embodiments. On the contrary, the intention is to cover all modifications, equivalents, and alternatives included in the spirit and scope of the present disclosure as defined by the appended claims.

[0026] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.

[0027] It should also be noted that in some alternative implementations, the functions / acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality / acts involved.

[0028] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skills in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0029] In the following detailed description of the embodiments of the disclosure, reference is made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the disclosure may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the disclosure, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present disclosure. The following description is, therefore, not to be taken in a limiting sense.

[0030] Hereinafter, a description of an embodiment with several components in communication with each other does not imply that all such components are required. On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the present disclosure.

[0031] FIG. 1 illustrates a concrete mixer 100 for managing a plurality of materials for production of concrete. The concrete mixer 100 includes at least one of, but not limited to, a plurality of axels 105, a chassis 110, a mixing drum 115, a material feeding system 120, a cabin 125, an engine 130, a plurality of wheels 135.With reference to FIG. 1 the material feeding system 120 includes at least one of, but is not limited to, a loading arm 122, a loading bucket 124 and a chutel26. Further the cabin 125 includes at least one of, but not limited to, one or more control units 600 (as shown in the FIG.6), a braking system620 (as shown in the FIG.6), an operator seat 615 (as shown in the FIG.6) and a steering system 610 (as shown in FIG. 6).

[0032] In an embodiment, FIG.2 illustrates an exploded view of the one pr more hydraulic motor 205 and plurality of axels 105 of the concrete mixer 100. Each of the plurality of axles is adapted to propel at least two wheels of the concrete mixer 100. The at least two axles of the plurality of axles 105 includes, but not limited to, a front axle 107 and a rear axle 109, which are coupled to the chassis 110. The front axle 107 is coupled to the chassis 110 via a coupling device. Further the coupling device is coupled to the chassis 110 via a single pin. Similarly, the rear axle 109 is coupled to the chassis 110.

[0033] In an embodiment, the coupling device is at least one of but not limited to, a single pin oscillation bracket 305 (shown in FIG. 3). The single pin oscillation bracket 305 is a mechanical component used in an articulation system of the concrete mixer 100 to connect the front axle of the plurality of axles 105 to the chassis 110. The articulation system is adapted to facilitate the stability and performance of the concrete mixer 100. The articulation system includes but is not limited, to oscillation brackets, to manage impact of driving and to maintain the stability and performance of the concrete mixer 100.

[0034] The front axle 107 of the plurality of axles 105 is adapted to receive power from the engine 130 to enable respective front two wheels of the plurality of wheels 135 to move. Thereby the front axle 107 of the plurality of axles 105 facilitates the mobility to the concrete mixer 100. Further, the rear wheels are adapted to move with respect to the momentum derived from the front two wheels, thereby advantageously minimizing the usage of power from the engine 130. The rear axle 109 is a non-driven type, this represents the rear axle 109 as the axle which does not receive any power from the engine 130. The rear axle 109 is adapted to provide stability to the concrete mixer 100. Further by adapting the non-driven type of rear axles facilitates in minimizing the weight of the concrete mixer 100.

[0035] Further, FIG. 3 depicts a side view of the chassis 110 of the concrete mixer 100. The chassis 110 is mounted on the plurality of axles 105. The chassis 110 is a rigid steel structure to provide required strength and support to the concrete mixer 100. The chassis is at least one of, but not limited to, a C-type and / or a tubular structure. The C-type chassis structure is illustrated by a cross-sectional shape, designed to provide efficient strength and support to the concrete mixer 100. The C- type chassis structure facilitates structure efficiency by providing the features such as but not limited, lightweight structure, easy to fabricate and assemble, and less expensive. The tubular structure of the chassis 110 consists of hollow tubes or pipes for constructing the main framework. The hollow tubes or pipes are structured in different shapes. The different shapes can include, but are not limited to, round, square rectangular in cross-section and the like. The tubular structure facilitates the custom configurations of the hollow tubes or pipes, thereby, the weight of the concrete mixer 100 can be reduced substantially by customizing the design of the hollow tubes or pipes.

[0036] In an embodiment, the mixing drum 115 (as shown in FIG. 1 and 4) is mounted on the chassis 110. The mixing drum 115 is adapted to mix a plurality of materials to produce concrete. The plurality of materials refers to the various materials that are combined in specific proportion to produce the concrete. The plurality of materials can include, but are not limited to, cement, water, sand, gravel, and plasticizer. The concrete is a composite material used in a construction. The mixing drum 115 includes, but not limited to, a substantial large opening area for effective loading and unloading of the plurality of materials. Due to the substantial large opening area of the mixing drum 115, it is independent of the mixing drum lift function. In other words, there is no requirement of the mixing drum to be lifted usingthe hydraulic system in order to load or unload the materials. The mixing drum 115 is operated via an open-loop system with a gear and / or vane pump configuration.

[0037] The open - loop system is a type of control system. The open - loop system operates the mixing drum 115 based on predetermined settings set by the operator without adjusting for changes or feedback from the output. The predetermined settings can include but are not limited to, drum speed, hydraulic pressure, flow rate, drum rotation direction, mixing duration.

[0038] In an embodiment, the material feeding system 120 (an shown in FIG. 1 and 4) is coupled to the chassis 110. The material feeding system 120 is adapted to collect the plurality of materials from a stored location and feeding the collected plurality of materials to the mixing drum 115. The material feeding system 120 includes at least one of, but not limited to, a loading arm 122, a loading bucket 124, integrated with a chute 126 connected to each other. The loading bucket 124 is integrated with the chute 126 and the loading arm 122. The loading bucket 124 is adapted for the purpose of collecting and discharging the plurality of materials from stored location into the mixing drum 115. The loading bucket is utilized in conjunction with the loading arm 122 and the chute 126 for collecting and discharging the plurality of materials. The loading arm 122 is adapted to facilitate the transfer of plurality of materials form the stored location into the mixing drum 115. By connecting the chute 126 directly to the loading bucket 124 advantageously reduces the weight of the concrete mixer 100. by eliminating the requirement of charging hopper used in conventional concrete mixer 100. The chute 126 facilitates the smooth and controlled release of plurality of materials from the loading arm 122 to the mixing drum 115. The chute 126 is adapted with mechanisms to regulate the flow rate of plurality of materials into the mixing drum 115.

[0039] Further, FIG.5a and 5b are exploded view of the hydraulic system and an engine 130 of the concrete mixer 100. In an embodiment the hydraulic system is coupled to the mixing drum 115 and the plurality of axles 105. The hydraulic systemincludes, but is not limited to, one or more hydraulic motors 205 (as shown in the FIG. 2), one or more hydraulic pumps 500 (502, 504, 506 and 508) and the like. The one or more hydraulic motors 205 are powered by the one or more hydraulic pumps 500 via the engine 130. The one or more hydraulic pumps 500 are adapted to perform one or more operations, the one or more operations includes at least one of but not limited to, travel operation of the concrete mixer 100, steering operation, the mixing drum 115 operation, implementation operation, etc. A hydraulic pump 502 is adapted to perform the travel operation of the concrete mixer 100 via a hydrostatic transmission. The hydraulic pump 502 converts mechanical energy derived from the engine 130 into hydraulic energy by pumping hydraulic fluid under pressure. Further, the one or more hydraulic motors 205 converts the hydraulic energy back into mechanical energy to drive the plurality of wheels 135 of the concrete mixer 100 for the travel operation.

[0040] A hydraulic pump 504 is integrated into a hydraulic circuit, the hydraulic circuits include at least one of but not limited to, hoses, valves, and actuators. The hydraulic pump 504 supplies pressurized fluid to hydraulic circuit components, thereby the hydraulic pump 504 facilitates the hydraulic circuit components to perform various tasks such as, but not limited to, tilt and dump mechanisms, powering the material feeding system 115, to regulate the flow and pressure of the hydraulic fluid, and the like. Further, a hydraulic pump 506 is adapted to provide the hydraulic pressure required to assist in steering operation. The hydraulic pump 506 converts the mechanical energy into pressurized hydraulic fluid, thereby hydraulic pump 506 facilitates the steering operation to assist with turning the plurality of wheels by reducing manual effort. Further, a hydraulic pump 508 is adapted to perform the mixing drum 115 operation. The hydraulic pump 508 converts mechanical energy from the engine 130 into hydraulic energy, further the hydraulic energy is used to drive the hydraulic motor 305, thereby the hydraulic motor 305 rotates the mixing drum 115 to produce concrete.

[0041] In an embodiment, the engine 130 which is mounted on the chassis 110 is adapted to power the hydraulic system in order to operate the concrete mixer 100. In a preferred embodiment, the capacity of the engine 130 ranges between 15 Kilowatt (KW) to 19 Kilowatt (KW). This should not be construed limiting the scope of the present disclosure, as the concrete mixer may accommodate engines with other ranges of capacities as well.

[0042] Further FIG. 6 illustrates the exploded view of the cabin 125. In an embodiment, the cabin 125 is mounted on a front portion of the chassis 110. The cabin 125 provides one or more control units 605 to a user to operate the concrete mixer 100. The one or more control units can include at least one of but not limited to a steering system 615, a control lever 610, a braking system 620.

[0043] The control lever 610 is adapted to facilitate the user to control range of displacements of the one or more hydraulic pumps 500, thereby enabling mobility of the concrete mixer 100. Advantageously, the additional power usage can be controlled by the user.

[0044] The braking system 620 is coupled to at least one of the axles of the plurality of axles 105. Further, the brake system 620 includes a pedal unit 616 housed inside the cabin 130. The pedal unit 616 is adapted to actuate the brake system 620 on the at least one axle in response to pressing the pedal unit 616, thereby halting the concrete mixer 100. Further, the pedal unit 616 is adapted to function as a parking brake when the pedal unit is pushed and locked with a pin.

[0045] Further, in an embodiment, the cabin 125 is at least one of, but not limited to, a split type of configuration. The split type of configuration of the cabin 125 in the concrete mixer 100 involves dividing the cabin 125 into various sections.

[0046] Further, FIG. 7 illustrates a flow diagram of a method for assembling a concrete mixer, according to various embodiments of the present invention. The method is explained by taking reference to FIG. 1-6. Further, in order to avoidrepetition, explanation of various components as indicated in FIG. 1-6 are not explained here. Therefore, it should not be construed as limiting the scope of the present disclosure.

[0047] At step 705, the method includes the step of, mounting, a chassis on a plurality of axles, wherein each of the plurality of axles is adapted to propel at least two wheels.

[0048] At step 710, the method includes the step of, mounting, a mixing drum on the chassis, wherein the mixing drum adapted to mix a plurality of materials to produce concrete

[0049] At step 715, the method includes the step of, coupling, a material feeding system to the chassis, wherein the material feeding system adapted to, collect the plurality of materials from a stored location and feed the collected plurality of materials to the mixing drum.

[0050] At step 720, the method includes the step of, coupling, a hydraulic system to the mixing drum and the plurality of axles.

[0051] At step 725, the method includes the step of, mounting, a cabin on a front portion of the chassis, wherein the cabin provides one or more control units to a user to operate the concrete mixer.

[0052] At step 730, the method includes the step of, mounting, an engine on the chassis, wherein the engine adapted to power the hydraulic system in order to operate the concrete mixer.

[0053] A person of ordinary skill in the art will readily ascertain that the illustrated embodiments and steps in description and drawings (FIG.1-7) are set out to explain the exemplary embodiments shown, and it should be anticipated that ongoing technological development will change the manner in which particular functions are performed. These examples are presented herein for purposes of illustration, and notlimitation. Further, the boundaries of the functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternative boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed. Alternatives (including equivalents, extensions, variations, deviations, etc., of those described herein) will be apparent to persons skilled in the relevant art(s) based on the teachings contained herein. Such alternatives fall within the scope and spirit of the disclosed embodiments.

[0054] The present invention provides various advantages, including providing a compact concrete mixer, optimal resource utilization and reducing the weight of the concrete mixer. The concrete mixer provides an efficient solution that reduces the weight and power usage for production of concrete. Tasks such as, drum lift function and the discharging of the plurality of materials are performed with the requirement of the hydraulic system. Further the hydraulic transmission can be controlled by the operator via the control lever in the cabin to reduce the additional usage of power. By eliminating a separate charging hopper for discharging the plurality of the materials, the present invention includes reduced numbers of components, which results in reducing the weight of the concrete mixer. The combination of ON and OFF highway tires reduces the rolling resistance, further facilitates the low power consumption from the engine for the mobility. Further, with the less engine power generated by the engine of 14-19 KW advantageously, achieves desired output.

[0055] The present invention offers multiple advantages over the prior art and the above listed are a few examples to emphasize on some of the advantageous features. The listed advantages are to be read in a non-limiting manner.REFERENCE NUMERALS

[0056] Concrete mixer - 100

[0057] Plurality of axles - 105

[0058] Chassis - 110

[0059] Mixing drum - 115

[0060] Engine - 120

[0061] Cabin - 125

[0062] Plurality of wheels - 135

[0063] Material feeding system - 120

[0064] Loading bucket - 124

[0065] Loading arm - 122

[0066] Chute - 126

[0067] One or more hydraulic motors - 205

[0068] Single pin oscillation bracket - 305

[0069] Hydraulic pump - 502

[0070] Hydraulic pump - 504

[0071] Hydraulic pump - 506

[0072] Hydraulic pump - 508

[0073] Steering system -615

[0074] One or more control units - 605

[0075] Control lever - 610

[0076] Operator seat - 620

[0077] Pedal unit - 616

Claims

CLAIMSWe Claim:

1. A concrete mixer, comprising: a plurality of axles, wherein each of the plurality of axles is adapted to propel at least two wheels; a chassis mounted on the plurality of axles; a mixing drum mounted on the chassis, the mixing drum adapted to mix a plurality of materials to produce concrete; a material feeding system coupled to the chassis, the material feeding system is adapted to, collect the plurality of materials from a stored location and feed the collected plurality of materials to the mixing drum; a hydraulic system coupled to the mixing drum and at least one of the plurality of axles; a cabin mounted on a front portion of the chassis, the cabin provides one or more control units to a user to operate the concrete mixer; and an engine mounted on the chassis, the engine adapted to power the hydraulic system in order to operate the concrete mixer.

2. The concrete mixer as claimed in claim 1 , wherein the chassis is at least one of, a C-type or tubular structure.

3. The concrete mixer as claimed in claim 1, wherein at least two axles of the plurality of axles, including a front axle and a rear axle are coupled to the chassis, wherein the front axle is coupled to the chassis via a coupling device, wherein the coupling device is at least one of, an oscillation bracket, the coupling device is coupled to the chassis via a single pin.

4. The concrete mixer as claimed in claim 1 , wherein the mixing drum includes a substantial large opening area to effectively load and unload the plurality of materials, thereby independent of requirement of the mixing drum lift function using the hydraulic system.

5. The concrete mixer as claimed in claim 1, wherein the material feeding system includes a loading bucket, a chute and a loading arm, wherein the loading bucket is integrated with the chute and the loading arm.

6. The concrete mixer as claimed in claim 1 , wherein the hydraulic system includes at least one or more hydraulic motors which are powered by one or more hydraulic pumps.

7. The concrete mixer as claimed in claim 1, wherein the concrete mixer further includes one or more control units, the one or more control units are coupled to the hydraulic system, the one or more control units facilitates the user to control a range of displacements of the hydraulic pump to provide mobility function.

8. The concrete mixer as claimed in claim 7, wherein the one or more control units include at least one of, a control lever.

9. The concrete mixer as claimed in claim 1, wherein the capacity of the engine ranges between 15kW-19kW.

10. The concrete mixer as claimed in claim 1, wherein the cabin is at least one of, a split type configuration.

11. The concrete mixer as claimed in claim 1 , wherein the front axle is adapted to receive power from the engine and enable the respective front two wheels to move, thereby providing mobility to the concrete mixer.

12. The concrete mixer as claimed in claim 1, wherein the rear wheels are adapted to move with respect to the momentum derived from the front two wheels, thereby lowering the usage of power from the engine, and the rear axle is non-driven type, thereby reducing the weight of the concrete mixer.

13. The concrete mixer as claimed in claim 1, wherein a brake system is coupled to at least one of the axle of the plurality of axles, wherein the brake system includes a pedal unit housed inside the cabin, wherein in response to pressing the pedal unit, actuates the brake system on the at least one axle thereby halting the concrete mixer.

14. The concrete mixer as claimed in claim 13, wherein the pedal unit is adapted to function as a parking brake when the pedal unit is pushed and locked with a pin.

15. The concrete mixer as claimed in claim 1, wherein the at least front two wheels and the at least back two wheels are a combination of ON and OFF highway tires in order to reduce rolling resistance, thereby allowing the concrete mixer to consume less engine power.

16. The concrete mixer as claimed in claim 1 , wherein the mixing drum is operated via an open loop system with a gear and / or vane pump configuration.

17. A method for assembling a concrete mixer, the method comprises the steps of: mounting, a chassis on a plurality of axles, wherein each of the plurality of axles is adapted to propel at least two wheels; mounting, a mixing drum on the chassis, wherein the mixing drum adapted to mix a plurality of materials to produce concrete;coupling, a material feeding system to the chassis, wherein the material feeding system adapted to, collect the plurality of materials from a stored location and feed the collected plurality of materials to the mixing drum; coupling, a hydraulic system to the mixing drum and the plurality of axles; mounting, a cabin on a front portion of the chassis, wherein the cabin provides one or more control units to a user to operate the concrete mixer; and mounting, an engine on the chassis, wherein the engine adapted to power the hydraulic system in order to operate the concrete mixer.

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