CN209738976U - Heavy truck's lightweight toolbox and heavy truck - Google Patents

Abstract

a heavy truck and a light weight kit thereof, comprising: left side box body, right side box body, middle box body, left side apron, right side apron, left side box body, right side box body, middle box body, left side apron, right side apron are all made by the EPP material, and the inside of left side box body, right side box body, middle box body is hollow structure. The left box body and the right box body are symmetrically connected to two sides of the middle box body. The upper end of the left box body, the upper end of the right box body and the upper end of the middle box body are flush. The left side apron lid is established on the left side box body, and the right side apron lid is established on right side box body and middle box body, and left side apron and right side apron are located the coplanar. Compare in the toolbox that the tradition adopted the panel beating to make, the utility model discloses a weight of lightweight toolbox is very big alleviates, has reduced the fuel loss of heavy truck, is of value to and reduces cost of transportation, reduces air pollution.

Description

Heavy truck's lightweight toolbox and heavy truck

Technical Field

The utility model relates to a heavy truck field, in particular to heavy truck's lightweight toolbox.

Background

In order to provide more storage space for the driver inside the cab of a heavy truck, more tool boxes for storing articles are generally provided inside the cab. Since the heavy truck industry involves long-distance and long-time transportation, a space for providing rest for a driver is required to be arranged inside the cab. However, the inner space of the cab of a heavy truck is very limited, and therefore, how to better utilize the limited inner space of the cab is very necessary. In addition, with the increasing demands for fuel economy, emissions, and the like of automobiles, the weight reduction of automobiles and parts thereof is becoming a trend.

among the conventional art, heavy truck's toolbox volume is less, is difficult to satisfy the driver to the demand of storing, and the toolbox sets up great again and occupies rest space. And the structure of toolbox adopts the panel beating enclosed construction, and panel beating density is great, and bigger toolbox has bigger quality, consequently can not satisfy the lightweight requirement to it is extravagant to have caused unnecessary oil consumption in the transportation, has improved the cost of transportation.

SUMMERY OF THE UTILITY MODEL

Adopt the sheet metal material toolbox quality to cause the extravagant problem of oil consumption greatly in overcoming the prior art, the utility model provides a heavy truck's lightweight toolbox to reach energy saving and emission reduction's purpose.

the utility model adopts the technical scheme as follows:

A heavy truck light weight kit comprising: the box comprises a left box body, a right box body, a middle box body, a left cover plate and a right cover plate, wherein the left box body, the right box body, the middle box body, the left cover plate and the right cover plate are all made of EPP materials; the inner parts of the left box body, the right box body and the middle box body are hollow structures; the left box body and the right box body are symmetrically connected to two sides of the middle box body; the upper end of the left box body, the upper end of the right box body and the upper end of the middle box body are flush; the left cover plate is covered on the left box body, and the right cover plate is covered on the right box body and the middle box body; the left side apron is located the coplanar with the right side apron.

Preferably, the left box body comprises a left box front wall, a left box right wall, a left box rear wall and a left box connecting plate; the left box front wall is parallel to and right of the left box rear wall, the front end and the rear end of the left box right wall are respectively connected to the right end of the left box front wall and the right end of the left box rear wall, and the front end and the rear end of the left box connecting plate are respectively connected to the left end of the top of the left box front wall and the left end of the top of the left box rear wall.

The right box body comprises a right box front wall, a right box left wall, a right box rear wall and a right box connecting plate; the right box front wall is parallel to and right against the right box rear wall, the front end and the rear end of the right box left wall are respectively connected with the left end of the right box front wall and the left end of the right box rear wall, the front end and the rear end of the right box connecting plate are respectively connected with the right end above the right box front wall and the right end above the right box rear wall, and the right box connecting plate is perpendicular to the right box front wall and the right box rear wall.

the middle box body is mainly formed by sequentially and mutually vertically connecting a middle box front wall, a middle box right wall, a middle box rear wall and a middle box left wall.

The left box right wall is fixedly connected with the middle box left wall in a clamping mode, and the right box left wall is fixedly connected with the middle box right wall in a clamping mode.

Preferably, the upper edge of the right wall of the left box is provided with a clamping groove, and the upper edge of the left wall of the right box is provided with a clamping groove; the upper edge of the left wall of the middle box is provided with a clamping flange and is fixedly connected with a clamping groove at the upper edge of the right wall of the left box in a clamping manner, and the upper edge of the right wall of the middle box is provided with a clamping flange and is fixedly connected with a clamping groove at the upper edge of the left wall of the right box in a clamping manner.

Preferably, the middle box rear wall, the left box rear wall and the right box rear wall are located on the same plane, and the middle box front wall protrudes out of the left box front wall and the right box front wall.

preferably, the end surface of the top of the left box body is provided with a positioning groove, and the periphery of the left cover plate is provided with a positioning flange to be accommodated in the positioning groove; the top of the left box body is also provided with a buckle groove, and the periphery of the left cover plate is also provided with a buckle which is clamped and fixed in the buckle groove.

Preferably, the end surfaces of the tops of the middle box body and the right box body are provided with positioning grooves, and the periphery of the right cover plate is provided with positioning flanges which are contained in the positioning grooves of the middle box body and the right box body; the middle box body and the end face of the top of the right box body are also provided with buckle grooves, and the periphery of the right cover plate is also provided with buckles which are clamped and fixed in the buckle grooves of the middle box body and the right box body.

Preferably, the bottom of the left box body, the bottom of the right box body and the bottom of the middle box body are respectively provided with a mounting hole, so that the left box body, the right box body and the middle box body are respectively connected and fixed on the floor of a cab.

Preferably, the left side box body and the right side box body are internally provided with mounting plates respectively.

Preferably, vertical reinforcing ribs are arranged on the left box body, the middle box body and the right box body.

The utility model also provides a heavy truck, heavy truck include driver's cabin and lightweight toolbox, lightweight toolbox fixed mounting be in on the floor of driver's cabin.

According to the above technical scheme, the utility model discloses following advantage and positive effect have at least:

the utility model discloses in, through the lightweight toolbox that adopts the EPP material to make, compare in the toolbox that the tradition adopted the panel beating to make, the very big lightening of weight has reduced the fuel loss of heavy truck, is of value to and reduces cost of transportation, reduces air pollution. Lightweight toolbox comprises left side box body, middle box body, right side box body, left side apron, right side apron many parts, and wherein some part damages, only needs the replacement part, is of value to and reduces cost of maintenance, and three box body provides more storing spaces. Left side apron and the right side apron of lightweight toolbox are located the coplanar and form the sleeper down, supply the driver can better rest in long-distance transport.

furthermore, the left end of the left box body and the right end of the right box body are not sealed, but are used as fetching openings, so that articles can be conveniently fetched and placed.

Further, the utility model discloses a between left side box body, right side box body and the middle box body, the mode that adopts the joint is connected, and it is more convenient to load and unload.

Further, the utility model discloses a be equipped with the constant head tank on left side box body, right side box body, the middle box body, be equipped with the location flange on left side apron, the right side apron for when the apron is installed on the box body, the location is more accurate and convenient.

Further, the utility model discloses a left side box body, middle box body, right side box body are equipped with vertical enhancement arris, have improved the structural strength of box body.

drawings

Fig. 1 is a schematic view of the overall structure of a lightweight tool box according to the present embodiment;

FIG. 2 is a schematic view of a left side box structure of the lightweight tool box of FIG. 1;

FIG. 3 is a schematic diagram of a right side box structure of the lightweight tool box of FIG. 1;

FIG. 4 is a schematic diagram of a middle box structure of the lightweight tool box of FIG. 1;

FIG. 5 is an enlarged partial view of the junction of the left cover plate and the left box of the lightweight tool case of FIG. 1;

FIG. 6 is a schematic view of a right side cover plate of the lightweight tool case of FIG. 1;

Fig. 7 is a side schematic view of the right side cover plate of fig. 6.

The reference numerals are explained below: 1. a left box body; 11. a left box front wall; 12. a left box right wall; 121. a left box snap groove; 1211. front and rear limiting grooves; 13. a left box back wall; 14. a left box connecting plate; 141. connecting plate ribs; 15. a left box positioning slot; 16. a left box snap groove; 17. a left box mounting plate; 18. a left box reinforcing edge; 2. a right box body; 21. a right box front wall; 22. a right box left wall; 23. a right box back wall; 24. a right box connecting plate; 25. a right cartridge positioning slot; 26. a right box snap groove; 27. a right box mounting plate; 28. a right box reinforcing rib; 29. mounting holes; 3. a middle box body; 31. a middle box front wall; 32. the left wall of the middle box; 321. clamping the flanges; 33. the rear wall of the middle box; 34. the right wall of the middle box; 341. clamping the flanges; 3411. front and rear limit flanges; 35. a middle box positioning groove; 36. a middle box buckling groove; 37. a partition plate; 38. a middle box reinforcing edge; 4. a left side cover plate; 41. a left cover buckle; 5. a right side cover plate; 51. a right cover right box portion; 52. a right lid middle box portion; 53. a right cap locating flange.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

referring to fig. 1, the present invention discloses a light weight toolbox for heavy trucks, which is mainly composed of a left box 1, a right box 2, a middle box 3, a left side cover plate 4 and a right side cover plate 5. The left box body 1, the right box body 2 and the middle box body 3 are hollow structures and used for accommodating articles. The left box body 1 and the right box body 2 are symmetrically connected to two sides of the middle box body 3. The upper end of the left box body 1, the upper end of the right box body 2 and the upper end of the middle box body 3 are flush. The left side apron 4 lid is established on left side box body 1, and the right side apron 5 lid is established on right side box body 2 and middle box body 3, and left side apron 4 lies in the coplanar with right side apron 5, forms the bed board that crouches down, supplies the driver to have a rest.

The following is an explanation of a specific structure.

Referring to fig. 2, in the present embodiment, the left box body 1 is made of EPP material and mainly includes a left box front wall 11, a left box right wall 12, a left box rear wall 13 and a left box connecting plate 14. The left box front wall 11 is parallel and opposite to the left box rear wall 13. The front end and the rear end of the left box right wall 12 are respectively connected with the right end of the left box front wall 11 and the right end of the left box rear wall 13, and the left box right wall 12 is perpendicular to the left box front wall 11 and the left box rear wall 13. The front end and the rear end of the left box connecting plate 14 are respectively connected to the left end of the top of the left box front wall 11 and the left end of the top of the left box rear wall 13, and the left box connecting plate 14 is perpendicular to the left box front wall 11 and the left box rear wall 13. A connecting plate convex rib 141 is arranged on the left box connecting plate 14, and the height of the connecting plate convex rib 141 is consistent with the thickness of the left side cover plate, so that the left side cover plate 4 is limited and prevented from sliding leftwards.

The left side of the left side box body 1 is of an opening structure, corresponds to a left side door on a cab, and can take and place objects from the left side box body 1 by opening the left side door, and when the left side door is closed, the left side door seals the left side of the left side box body 1. In other embodiments, an openable left box door may be installed on the left side of the left box 1. The middle right side of the top surface of the left box body 1 is of an opening structure, and a left cover plate 3 is covered on the top surface of the left box body and used for taking and placing objects from the upper side of the left box body 1 in the cab. The bottom surface of the left box body 1 is of an opening structure. A left box mounting plate 17 is arranged in the left box body 1, and the left box mounting plate 17 is positioned at a corner formed by the left box right wall 12 and the left box rear wall 13 and is positioned at the middle upper position of the left box body 1.

in the present embodiment, the lower right corners of the left box front wall 11 and the left box rear wall 13 (the lower portion of the left box adjacent to the middle box) are preferably curved to fit the left portion of the middle floor assembly protruding from the middle of the cab floor. In other embodiments, the shape of the left box front wall 21 and the left box rear wall 13 may be adjusted according to the condition of the cab. For example, when the cab floor is flat, the left box front wall 11 and the left box rear wall 13 may be rectangular.

Preferably, the upper portion of the left box right wall 12 is provided with a left box clamping groove 121 parallel to the upper edge of the left box right wall 12, and the end of the left box clamping groove 121 adjacent to the left box rear wall 13 is provided with a front and rear limiting groove 1211 recessed downward perpendicular to the left box clamping groove 121 for engaging with the middle box body 3. The terminal surface at the top of left side box body 1 is equipped with left box constant head tank 15 at interval for fix a position left side apron 4. The end face of the top of the left box body is also provided with left box buckle grooves 16 at intervals for fixing the left cover plate 4.

Preferably, the inner surface of the left box body 1 and the outer surface of the left box back wall 13 are provided with vertical left box reinforcing ribs 18 for improving the strength of the left box body 1.

referring to fig. 3, in the present embodiment, the right box body 2 is made of EPP material and mainly includes a right box front wall 21, a right box left wall 22, a right box rear wall 23 and a right box connecting plate 24. The right box front wall 21 is parallel and opposite to the right box rear wall 23. The front and rear ends of the right box left wall 22 are connected to the left end of the right box front wall 21 and the left end of the right box rear wall 23, respectively, and the right box left wall 22 is perpendicular to the right box front wall 21 and the right box rear wall 23. The front end and the rear end of the right box connecting plate 24 are respectively connected with the right end of the top of the right box front wall 21 and the right end of the top of the right box rear wall 23, and the right box connecting plate 24 is perpendicular to the right box front wall 21 and the right box rear wall 23.

The right side of right side box body 2 is open structure, corresponds the right side door on the driver's cabin, opens the right side door and can get from right side box body 2 and put article. When the right door is closed, the right side of the right box body 2 is sealed by the right door. In other embodiments, an openable right box door may be installed on the right side of the right box 2. The middle left side of the top surface of the right box body 2 is of an opening structure, and a right side cover plate 5 is covered on the top surface of the right box body and used for taking and placing objects from the upper side of the right box body 2 in the cab. The bottom surface of the right box body 2 is of an opening structure. A right box mounting plate 27 is arranged in the right box body 2, and the right box mounting plate 27 is positioned at a corner formed by the right box back wall 23 and the right box left wall 22 and is positioned at the middle upper position of the right box body 2.

In the present embodiment, the lower left corners of the right box front wall 21 and the right box rear wall 23 (the lower portion of the right box adjacent to the middle box) are preferably curved to fit the right portion of the middle floor assembly protruding from the middle of the cab floor. In other embodiments, the shape of the right box front wall 21 and the right box rear wall 23 may be adjusted according to the conditions of the cab. For example, when the cab floor is flat, the right box front wall 21 and the right box rear wall 23 may be rectangular.

Preferably, the upper portion of the right box left wall 22 is provided with a right box engaging groove (not shown in the figure) parallel to the upper edge of the right box left wall 22, and the end of the right box engaging groove adjacent to the right box rear wall 23 is provided with a front and rear limiting groove (not shown in the figure) recessed downward perpendicular to the right box engaging groove for engaging with the middle box body 3. The end face at the top of the right box body 2 is provided with right box positioning grooves 25 at intervals for positioning the right cover plate 5. The end surface of the top of the right box body 2 is also provided with right box buckle grooves 26 at intervals for fixing the right cover plate 5.

Preferably, the inner surface of the right box body 2 and the outer surface of the right box back wall 23 are provided with vertical right box reinforcing ribs 28 for improving the strength of the right box body 2.

Referring to fig. 4, the middle box body 3 is made of EPP material and mainly formed by connecting a middle box front wall 31, a middle box left wall 32, a middle box rear wall 33 and a middle box right wall 34 in sequence and vertically. The top surface and the bottom surface of the middle box body 3 are of an opening structure, and the whole middle box body 3 is of a four-side square frame structure.

the upper part of the left wall 32 of the middle box is provided with a clamping flange 321 parallel to the upper edge of the left wall 32 of the middle box, and the end of the clamping flange 321 adjacent to the rear wall 33 of the middle box is provided with a front and a rear limiting flanges (not shown in the figure) which are perpendicular to the clamping flange 321 and protrude downwards. Wherein: the clamping flange 321 is matched with the left box clamping groove 121, the clamping flange 321 is clamped in the left box clamping groove 121 on the upper portion of the right wall 12 of the left box to prevent the left box body 1 from moving up and down relative to the floor of the cab, and the front and rear limiting flanges are matched with the front and rear limiting grooves 1211 to prevent the left box body 1 and the middle box body 3 from moving back and forth relative to each other.

Similarly, the upper portion of the right wall 34 of the middle box is provided with a clamping flange 341 and a front and rear limiting flange 3411 arranged on the clamping flange 341. Wherein: the clamping flange 341 is adapted to the right box clamping groove (not shown in the figure), the clamping flange 341 is clamped in the right box clamping groove (not shown in the figure) at the upper edge of the left wall 22 of the right box to prevent the right box body 2 from moving up and down relative to the floor of the cab, and the front and rear limiting flanges are adapted to the front and rear limiting grooves (not shown in the figure) to prevent the right box body 2 and the middle box body 3 from moving back and forth relative to each other.

In this embodiment, the upper end of middle box body 3 flushes with the upper end of left side box body 1 and right side box body 2, and the lower extreme indent of middle box body 3 is in left side box body 1 and right side box body 2. Namely, the height of the middle box body 3 is smaller than the height of the left box body 1 and the right box body 2. The purpose is to adapt to the middle floor integration which protrudes upwards in the middle of the cab floor. In other embodiments, the height of the intermediate box 3 is set according to the details of the cab. For example, when the floor of the cab is flat, the height of the middle box 3 is equal to the height of the left box 1 and the right box 2.

in the present embodiment, the front-back distance of the middle box 3 (i.e. the distance between the middle box front wall 31 and the middle box rear wall 33) is preferably greater than the front-back distance of the left box 1 and/or the right box 2 (i.e. the distance between the left box front wall 11 and the left box rear wall 13 or the distance between the right box front wall 21 and the right box rear wall 23), specifically, the middle box rear wall 33, the left box rear wall 13, and the right box rear wall 23 are located on the same plane, and the middle box front wall 31 protrudes from the left box front wall 11 and the right box front wall 21. In other embodiments, the distance between the middle box 3 and the right box 1 may be equal to the distance between the left box 2 and the right box 2.

Preferably, a partition plate 37 is arranged inside the middle box body 3, and two ends of the partition plate 37 are connected to the middle box left wall 32 and the middle box right wall 34 to divide the inside of the middle box body 3 into a front accommodating cavity and a rear accommodating cavity. In other embodiments, different forms of partition plates may be provided in the intermediate box body, or no partition plate may be provided, as required.

Preferably, the end surface of the top of the middle box body 3 is provided with middle box positioning grooves 35 at intervals for positioning the right side cover plate 5. The end face of the top of the middle box body 3 is also provided with middle box buckling grooves 36 at intervals for fixing the right side cover plate 5.

Preferably, the inner surface of the middle case body 3 is provided with vertical middle case reinforcing ribs 38 for improving the strength of the middle case body 3.

Referring to fig. 1 and 5, in the present embodiment, the left side cover plate 4 is made of EPP material, and the shape of the left side cover plate 4 matches with the opening of the top surface of the left side box body 1. The periphery of the left side cover plate 4 is provided with a left cover positioning flange (not shown in the figure) which is matched with the left box positioning groove 15 on the left side box body 4. When the left side cover plate 4 is closed, the left cover positioning flange on the left side cover plate is accommodated in the left box positioning groove 15 of the left side box body 1, so that the purpose of more rapid and convenient positioning and installation is achieved. The periphery of left side apron 4 still is equipped with the left side lid buckle 41 that the position corresponds with left side box body buckle slot 16 on the left side box body 1, closes left side apron 1 back, is fixed in left side box body buckle slot 16 with left side lid buckle 41 joint for left side apron 4 fixed connection is on left side box body 1.

Referring to fig. 1, 6 and 7, the right cover 5 is made of EPP material, and the shape of the right cover 5 matches the opening on the top surface of the middle box 3 and the right box 2. The right box cover 5 comprises a right box part 51 adapted to the right box 2 and a right box part 52 adapted to the middle box 3. Since the distance between the front and rear walls of the middle box 3 is greater than the distance between the front and rear walls of the right box 2, the width of the right-cover middle box 52 is greater than the width of the right-cover right box 51. The periphery of the right side cover plate 5 is provided with a right cover positioning flange 53 which is matched with the middle box positioning groove 35 on the middle box body 3 and the right box positioning groove 25 on the right side box body 2. When the right side cover plate 5 is closed, the right cover positioning flange 53 on the right side cover plate 5 is accommodated in the middle box positioning groove 35 and the right box positioning groove 25, so that the purpose of more rapid and convenient positioning and installation is achieved. The periphery of right side apron 5 still is equipped with the right side lid buckle (not shown in the figure) with well box buckle groove 36 and right box buckle groove 26 adaptation, closes right side apron 5 after, is fixed in well box buckle groove 36 and right box buckle groove 26 with right side lid buckle joint for the fixed connection of right side apron 5 is on middle box body 3 and right side box body 2.

The bottoms of the left box body 1, the right box body 2 and the middle box body 3 are respectively provided with a connecting device which is a mounting hole. Preferably, two mounting holes are respectively formed in the bottom end of the left box front wall 11, the bottom end of the left box rear wall 13, the bottom end of the right box front wall 21, the bottom end of the right box rear wall 23, the bottom end of the middle box front wall 31 and the bottom end of the middle box rear wall 33, and inserts are arranged in the mounting holes. So that the left box body 1, the right box body 2 and the middle box body 3 are respectively connected and fixed on the floor of the cab by bolts. The mounting hole 29 at the bottom end of the right box front wall 21 is labeled in fig. 1, and the rest is not shown.

Optionally, an inverter, a vehicle data recorder/monitor, and the like are mounted on the left box mounting plate or the right box mounting plate.

The utility model also provides a heavy truck, heavy truck include driver's cabin and lightweight toolbox, lightweight toolbox fixed mounting be in on the floor of driver's cabin.

Specifically, a middle floor assembly is arranged in the middle of the floor of the cab, and the middle floor assembly protrudes out of the floor. The rear wall of lightweight toolbox is pasted the driver's cabin rear wall, and left side box body 1 is corresponding to the left side door of driver's cabin, and right side box body 2 is corresponding to the right side door of driver's cabin, and middle box body 3 is located well floor and is integrated. Nut plates are respectively welded on the left floor of the cab, the right floor of the cab and the middle floor in a spot welding manner, and projection welding nuts are welded on the nut plates. The positions of the projection welding nut and the nut plate correspond to the mounting holes at the bottom of the light-weight tool box. The left box body 1, the middle box body 2 and the right box body 3 are fixedly installed on a welding nut through bolts.

When the left side door and/or the right side door are opened, articles can be taken and placed from the left side surface of the left side box body 1 and/or the right side surface of the right side box body 2.

According to the above technical scheme, the utility model discloses following advantage and positive effect have at least:

The utility model discloses in, through the lightweight toolbox that adopts the EPP material to make, compare in the toolbox that the tradition adopted the panel beating to make, the very big lightening of weight has reduced the fuel loss of heavy truck, is of value to and reduces cost of transportation, reduces air pollution. Lightweight toolbox comprises left side box body 1, middle box body 2, right side box body 3, left side apron 4, 5 parts on the right side apron, and wherein some part damages, only needs the replacement part, is of value to and reduces cost of maintenance, and three box body can provide more storing space. Left side apron 4 and the right side apron 5 of lightweight toolbox lie in the coplanar and form the sleeper down, supply the driver can be better rest in long-distance transport.

Furthermore, the left end of the left box body 1 and the right end of the right box body 2 are not sealed, but are used as fetching openings, so that articles can be conveniently placed.

Further, the utility model discloses a between left side box body 1, right side box body 2 and middle box body 3, the mode that adopts the joint is connected, and it is more convenient to load and unload.

Further, the utility model discloses a be equipped with the constant head tank on left side box body 1, right side box body 2, the middle box body 3, be equipped with the location flange on left side apron 4, the right side apron 5 for when the apron is installed on the box body, the location is more accurate and convenient.

Further, the utility model discloses a left side box body 1, middle box body 2, right side box body 3 are equipped with vertical enhancement arris, have improved the structural strength of box body.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A heavy truck light weight kit, comprising: the box comprises a left box body, a right box body, a middle box body, a left cover plate and a right cover plate, wherein the left box body, the right box body, the middle box body, the left cover plate and the right cover plate are all made of EPP materials;

The inner parts of the left box body, the right box body and the middle box body are hollow structures;

The left box body and the right box body are symmetrically connected to two sides of the middle box body; the upper end of the left box body, the upper end of the right box body and the upper end of the middle box body are flush; the left cover plate is covered on the left box body, and the right cover plate is covered on the right box body and the middle box body; the left side apron is located the coplanar with the right side apron.

2. The lightweight kit of claim 1, wherein said left side box body comprises a left box front wall, a left box right wall, a left box rear wall, and a left box connecting plate; the left box front wall is opposite to the left box rear wall in parallel, the front end and the rear end of the left box right wall are respectively connected to the right end of the left box front wall and the right end of the left box rear wall, and the front end and the rear end of the left box connecting plate are respectively connected to the left end of the top of the left box front wall and the left end of the top of the left box rear wall;

The right box body comprises a right box front wall, a right box left wall, a right box rear wall and a right box connecting plate; the right box front wall is opposite to the right box rear wall in parallel, the front end and the rear end of the right box left wall are respectively connected with the left end of the right box front wall and the left end of the right box rear wall, the front end and the rear end of the right box connecting plate are respectively connected with the right end above the right box front wall and the right end above the right box rear wall, and the right box connecting plate is perpendicular to the right box front wall and the right box rear wall;

The middle box body is mainly formed by sequentially and mutually vertically connecting a middle box front wall, a middle box right wall, a middle box rear wall and a middle box left wall;

The left box right wall is fixedly connected with the middle box left wall in a clamping mode, and the right box left wall is fixedly connected with the middle box right wall in a clamping mode.

3. the lightweight tool box of claim 2, wherein the upper edge of the right wall of the left box is provided with a clamping groove, and the upper edge of the left wall of the right box is provided with a clamping groove; the upper edge of the left wall of the middle box is provided with a clamping flange and is fixedly connected with a clamping groove at the upper edge of the right wall of the left box in a clamping manner, and the upper edge of the right wall of the middle box is provided with a clamping flange and is fixedly connected with a clamping groove at the upper edge of the left wall of the right box in a clamping manner.

4. The lightweight toolbox of claim 2, wherein the middle box rear wall, the left box rear wall, and the right box rear wall are located on a same plane, and the middle box front wall protrudes from the left box front wall and the right box front wall.

5. The lightweight tool box according to claim 1, wherein a positioning groove is provided on an end surface of a top portion of the left box body, and a positioning flange is provided on a periphery of the left cover plate to be received in the positioning groove; the top of the left box body is also provided with a buckle groove, and the periphery of the left cover plate is also provided with a buckle which is clamped and fixed in the buckle groove.

6. The lightweight toolbox of claim 1, wherein the top end surfaces of the middle box body and the right box body are provided with positioning grooves, and the periphery of the right cover plate is provided with positioning flanges to be received in the positioning grooves of the middle box body and the right box body; the middle box body and the end face of the top of the right box body are also provided with buckle grooves, and the periphery of the right cover plate is also provided with buckles which are clamped and fixed in the buckle grooves of the middle box body and the right box body.

7. The light weight toolbox of claim 1, wherein the bottom of the left side box body, the right side box body and the middle box body are respectively provided with a mounting hole for connecting and fixing the left side box body, the right side box body and the middle box body on the floor of a cab.

8. The lightweight tool box of claim 1, wherein mounting plates are disposed in the left side box body and the right side box body, respectively.

9. The lightweight tool case of claim 1, wherein vertical reinforcement ribs are provided on the left side case, the middle case, and the right side case.

10. A heavy truck comprising a cab and a light weight toolbox of any one of claims 1-9, wherein the light weight toolbox is fixedly mounted on a floor of the cab.