Claims:We claim:
1. An assembly for a bus chassis with a ladder frame, the assembly (100) comprising:
a. at least one pair of long members (101a, 101b) which is assembled in parallel and separated by a pre-defined distance, wherein the pair of long members (101a, 101b) comprise at least one pair of slots (102a, 102b) which is provided on the left hand side and right hand side of the pair of long members (101a, 101b);
b. at least one body cross member (103) which is inserted between the pair of long members (101a, 101b) through the corresponding pair of slots (102a, 102b) thereby forming a ladder frame structure on which a bus body is built.

2. The assembly (100) as claimed in claim 1, wherein the pair of slots (102a, 102b) are of identical shape and dimensions.

3. The assembly (100) as claimed in claim 1, wherein the pair of slots (102a, 102b) are provided at equal pre-defined intervals on the left hand side and right hand side of the pair of long members (101a, 101b).

4. The assembly (100) as claimed in claim 1, wherein one or more body cross members (103) are welded to the pair of long members (101a, 101b) upon insertion through the pair of slots (102a, 102b) to ensure a strong and rigid ladder frame chassis for mounting a bus body.

5. The assembly (100) as claimed in claim 1, wherein the ladder frame chassis is integrated with the bus body floor thereby providing a reduced floor height for the bus.
, Description:PREAMBLE TO THE DESCRIPTION:
[0001] The following specification particularly describes the invention and the manner in which it is to be performed:
DESCRIPTION OF THE INVENTION:
Technical field of the invention
[0002] The present invention relates to an assembly for a bus chassis with a ladder frame. The invention particularly relates to an integrated bus chassis and a bus body floor, wherein the chassis is a welded ladder frame structure.
Background of the invention
[0003] Presently, the chassis over which a bus body is mounted is made of a plurality of cross members which are bolted or rivetted to a pair of long members resulting in the requirement of more number of parts for the construction of the chassis frame. Due to the utility of a greater number of parts, the weight of the chassis increases thereby increasing the overall cost. Further, the conventional chassis have a high chassis floor height due to the employment of a separate chassis floor and a bus body floor. Additionally, the bolted construction of the conventional chassis requires frequent maintenance which contributes to the increasing cost of manufacturing.
[0004] The Patent Application No JP2002331957A entitled “Frame structure for vehicle” relates to a frame structure for vehicle which is formed into a ladder shape by connecting two or more cross members to a pair of side rails at prescribed intervals. This structure comprises the lateral rod having one end connected to the rear axle of a vehicle and the other end of one cross member of the cross members through the lateral rod bracket. The one cross member is formed of a square pipe.
[0005] Hence, there exists a need for a mechanism to construct a welded chassis frame in order to reduce the weight of the assembly.
Summary of the invention:
[0006] The present invention overcomes the drawbacks of the prior art by disclosing an assembly for a bus chassis with a ladder frame, wherein the assembly comprises at least one pair of long members which is assembled in parallel and separated by a pre-defined distance, wherein the pair of long members comprises at least one pair of slots which is provided on the left hand side and right hand side of the pair of long members. Further, the assembly comprises at through the corresponding pair of slots thereby forming a ladder frame structure on which a bus body is built
[0007] The present invention provides an assembly that is integrated with the bus body floor which eliminates the need for a separate chassis and bus body floor thereby ensuring a lower bus floor height. The assembly employs minimum number of components which accounts for a reduction in weight and cost of the assemble. Further, the welded construction of the assembly is rigid, robust and noiseless during operation thereby ensuring minimum maintenance and extended lifetime of the assembly.
Brief description of the drawings:
[0008] The foregoing and other features of embodiments will become more apparent from the following detailed description of embodiments when read in read in conjunction with the accompanying drawings. In the drawings, like reference numerals refer to like elements.
[0009] Figure 1a and 1b illustrate an assembly for a bus chassis with a welded ladder frame in a disassembled arrangement and an assembled arrangement respectively.

Detailed description of the invention:
[0010] Reference will now be made in detail to the description of the present subject matter, one or more examples of which are shown in figures. Each example is provided to explain the subject matter and not a limitation. Various changes and modifications obvious to one skilled in the art to which the invention pertains are deemed to be within the spirit, scope and contemplation of the invention.
[0011] The present invention provides an assembly for a bus chassis with a ladder frame, wherein the assembly comprises at least one pair of long members which are assembled in parallel and separated by a pre-defined distance. The pair of long members comprise at least one pair of slots which are provided on the left hand side and right hand side of the pair of long members, wherein the pair of slots are of identical shape and dimensions. Further, the assembly comprises at least one body cross member which is inserted between the pair of long members) through the corresponding pair of slots thereby forming a ladder frame structure on which a bus body is built.
[0012] Figure 1a and 1b illustrate an assembly for a bus chassis with a welded ladder frame in a disassembled arrangement and an assembled arrangement respectively, wherein the assembly (100) comprises at least one pair of long members (101a, 101b) which is assembled in parallel and separated by a pre-defined distance. The pair of long members (101a, 101b) comprise at least one pair of slots (102a, 102b) which is provided on the left hand side and right hand side of the pair of long members (101a, 101b), wherein the pair of slots (102a, 102b) are of identical shape and dimensions which are provided at equal pre-defined intervals on the left hand side and right hand side of the pair of long members (101a, 101b).
[0013] Further, the assembly (100) comprises at least one body cross member (103) which is inserted between the pair of long members (101a, 101b) through the corresponding pair of slots (102a, 102b) thereby forming a ladder frame structure on which a bus body is built. The body cross members (103) are welded to the pair of long members (101a, 101b) upon insertion through the pair of slots (102a, 102b) to ensure a strong and rigid ladder frame chassis for mounting a bus body, wherein the bus body is mounted on the ladder frame chassis by welding the side structure of the bus body to the body cross members (103). Additionally, the ladder frame chassis is integrated with the bus body floor thereby providing a reduced floor height for the bus.
[0014] The present invention provides an assembly (100) that is integrated with the bus body floor which eliminates the need for a separate chassis and bus body floor thereby ensuring a lower bus floor height. The assembly (100) employs minimum number of components which accounts for a reduction in weight and cost of the assembly (100). Further, the welded construction of the assembly (100) is rigid, robust and noiseless during operation thereby ensuring minimum maintenance and extended lifetime of the assembly (100).
[0015] The description of the present system has been presented for purposes of illustration and description but is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the invention. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Reference numbers:
Components Reference Numbers
Assembly 100
Long members 101a, 101b
Slots 102a, 102b
Body cross member 103