EP4653341A1

EP4653341A1 - Container underframe and container having same

Info

Publication number: EP4653341A1
Application number: EP24902178.3A
Authority: EP
Inventors: Tao Li; Wanhai ZHU; Lei Chen; Lanzhong CHEN; Tiankui YANG; Bingwu CAO; Xuebai YANG; Tianhua HOU; Hua Li; Haipeng Liu; Linghan Yue; Tinggang CHEN; Wenxin GONG; Yonghuan YU; Xianlin MENG; Yang AN
Original assignee: Petrochina Co Ltd; CRRC Qiqihar Rolling Stock Co Ltd
Current assignee: Petrochina Co Ltd; CRRC Qiqihar Rolling Stock Co Ltd
Priority date: 2023-12-15
Filing date: 2024-08-20
Publication date: 2025-11-26
Also published as: WO2025123752A1; AU2024401376A1; CN117508930A

Abstract

The present invention provides a container chassis and a container with the container chassis. The container chassis includes a chassis part, the chassis part including a first side beam; a second side beam, the second side beam and the first side beam being arranged at an interval; a plurality of cross beam groups arranged between the first side beam and the second side beam at intervals, each of the plurality of cross beam groups including a plurality of first cross beams; and a plurality of second cross beams, at least one second cross beam being arranged between any two adjacent cross beam groups of the plurality of cross beam groups, wherein the height of the first cross beam is less than the height of the second cross beam. The technical solution of the present application effectively solves the problem that the chassis is easily damaged due to the fact that the arrangement reasonability of cross beams in a container chassis in related technologies is poor.

Description

Cross-Reference to Related Application

The present application claims priority to Chinese patent application No. CN202311738050.5, entitled "Container Chassis and Container with Container Chassis" filed with the China National Intellectual Property Administration on December 15, 2023 , which is incorporated herein by reference in its entirety.

Technical Field

The present invention relates to the technical field of containers, specifically to a container chassis and a container with the container chassis.

Background

A synthetic resin container is a dry bulk container that can transport synthetic resin bulk cargos, which has the characteristics of light self-weight, large volume, top loading and side unloading of cargos, integrated use with containers after installing hydraulic lifting frames on road transportation vehicles, and completion of unloading without the need for hoisting devices, can be used for large-scale transportation and storage of synthetic resin bulk cargos, can achieve safe, clean and efficient transportation of synthetic resin bulk cargos, and has low comprehensive transportation low and high economic benefit.
The key technology of the synthetic resin container is top loading and side unloading of cargos, and the synthetic resin container is integrally used with containers after installing hydraulic lifting frames on road transportation vehicles. Synthetic resin bulk cargos can be used for packaging and production of daily necessities, and belong to petrochemical products with higher economic value, with the development of society and the improvement of people's living standards, the demand for synthetic resin products is gradually increasing. In the current railway transportation of synthetic resin, a large number of bagged box cars and ton bag universal boxes are used for transportation. During transportation, a lot of manpower is required to transport cargos, resulting in high transportation cost. During transportation with ton bags, the use of ton bags is not standardized, resulting in greater loss of cargos.
In related technologies, due to the granular structure of synthetic resin with certain fluidity, the requirement for the structural strength of a chassis is relatively high when the synthetic resin is loaded in a container. At present, a chassis of a container for transporting synthetic resin adopts a universal structure composed of an outer frame and a plurality of cross beams arranged in the outer frame. This structure is difficult to meet the transportation needs of the synthetic resin, that is, the arrangement reasonability of cross beams in the chassis is poor, so that the chassis is easily damaged.

Summary

The main objective of the present invention is to provide a container chassis and a container with the container chassis to solve the problem that the chassis is easily damaged due to the fact that the arrangement reasonability of cross beams in a container chassis in related technologies is poor.
In order to achieve the above objective, according to one aspect of the present invention, a container chassis is provided. The container chassis includes a chassis part, the chassis part including a first side beam; a second side beam, the second side beam and the first side beam being arranged at an interval; a plurality of cross beam groups arranged between the first side beam and the second side beam at intervals, each of the plurality of cross beam groups including a plurality of first cross beams; and a plurality of second cross beams, at least one second cross beam being arranged between any two adjacent cross beam groups of the plurality of cross beam groups, wherein the height of the first cross beam is less than the height of the second cross beam.
Further, the ratio of the height of the first cross beam to the height of the second cross beam is between 0.5 and 0.8.
Further, in the direction from the first end of the first side beam to the second end of the first side beam, the number of the first cross beams in at least some of the cross beam groups in the plurality of cross beam groups is different, and/or the top surface of the first cross beam is flush with the top surface of the second cross beam.
Further, the plurality of cross beam groups include a first carrying group, a second carrying group, a third carrying group, a fourth carrying group, a fifth carrying group and a sixth carrying group which are sequentially arranged in the direction from the first end of the first side beam to the second end of the first side beam; the number of the first cross beams in the first carrying group is greater than the number of the first cross beams in the second carrying group; the number of the first cross beams in the third carrying group is equal to the number of the first cross beams in the fourth carrying group; and the number of the first cross beams in the fourth carrying group to the sixth carrying group gradually decreases.
Further, in the first carrying group, the distance between two adjacent first cross beams which are far away from the second cross beam is greater than or equal to the distance between two adjacent first cross beams which are close to the second cross beam; in the third carrying group, in the direction from the first end of the first side beam to the second end of the first side beam, a plurality of distances formed between any two adjacent first cross beams first increase and then decrease; and in the fourth carrying group, in the direction from the first end of the first side beam to the second end of the first side beam, a plurality of distances formed between any two adjacent first cross beams first increase, then decrease and finally increase again.
Further, one second cross beam is arranged between the first carrying group and the second carrying group; two second cross beams are arranged between the second carrying group and the third carrying group; one second cross beam is arranged between the third carrying group and the fourth carrying group; two second cross beams are arranged between the fourth carrying group and the fifth carrying group; and two second cross beams are arranged between the fifth carrying group and the sixth carrying group.
Further, the first cross beam includes a first flat plate, a first vertical plate and a second flat plate; the first flat plate and the second flat plate are connected with two ends of the first vertical plate and are arranged oppositely; a first opening is formed among the first flat plate, the second flat plate and the first vertical plate; the first flat plate and the second flat plate have the same size; the second cross beam includes a third flat plate, a second vertical plate and a fourth flat plate; the third flat plate and the fourth flat plate are connected with two ends of the second vertical plate and are arranged oppositely; a second opening is formed between the third flat plate and the fourth flat plate; and the cross-sectional area of the third flat plate is equal to the cross-sectional area of the fourth flat plate.
Further, the directions of the first openings of the plurality of first cross beams are the same; and/or the directions of the second openings of the two second cross beams between the second carrying group and the third carrying group are opposite; and/or the directions of the second openings of the two second cross beams between the fourth carrying group and the fifth carrying group are opposite; and/or the directions of the second openings of the two second cross beams between the fifth carrying group and the sixth carrying group are opposite.
Further, the container chassis further includes a plurality of support assemblies arranged at intervals; the plurality of support assemblies are located above the chassis part and are connected with the chassis part; each of the plurality of support assemblies includes a first main oblique beam, a second main oblique beam and a third main oblique beam; the first end of the first main oblique beam, the first end of the second main oblique beam and the first end of the third main oblique beam are connected; the joint among the first end of the first main oblique beam, the first end of the second main oblique beam and the first end of the third main oblique beam is located directly above the first side beam; the second end of the first main oblique beam is connected with the middle of the chassis part; the second end of the second main oblique beam and the second end of the third main oblique beam are both connected with the first side beam; and a triangular structure is formed among the first side beam, the second main oblique beam and the third main oblique beam.
Further, the second end of the first main oblique beam is connected with the first cross beam or the second cross beam.
Further, the support assembly further includes a plurality of first auxiliary oblique beams and a plurality of second auxiliary oblique beams located on two sides of the first main oblique beam; the first end of each first auxiliary oblique beam is connected with the first main oblique beam; the first end of each second auxiliary oblique beam is connected with the first main oblique beam; the second end of each first auxiliary oblique beam is connected with the first cross beam or the second cross beam; and the second end of each second auxiliary oblique beam is connected with the first cross beam or the second cross beam.
Further, each support assembly further includes a support beam, the first end of the support beam is connected with the first main oblique beam, and the second end of the support beam is connected with the first side beam or the first cross beam or the second cross beam.
According to another aspect of the present invention, a container is provided. The container includes a container chassis, and the container chassis is the above container chassis.
By applying the technical solution of the present application, a first side beam and a second side beam are arranged at an interval, a plurality of cross beam groups are arranged between the first side beam and the second side beam at intervals, and each of the plurality of cross beam groups includes a plurality of first cross beams. At least one second cross beam is arranged between any two adjacent cross beam groups of the plurality of cross beam groups. Specifically, the height of the first cross beam is less than the height of the second cross beam. Through the above arrangement, the plurality of cross beam groups can achieve the connection between the first side beam and the second side beam and can ensure the structural strength of the chassis part. Moreover, at least one second cross beam is arranged between any two adjacent cross beam groups, and the height of the second cross beam is greater than the height of the first cross beam, so that the structural strength of the second cross beam is greater than the structural strength of the first cross beam. The second cross beam is connected between the first side beam and the second side beam, so that the structural strength of the chassis part can be further improved. The above arrangement can improve the arrangement reasonability of the chassis part, which can not only ensure the structural strength of the chassis part, but also avoid the excessive weight of the chassis part. Therefore, the technical solution of the present application effectively solves the problem that the chassis is easily damaged due to the fact that the arrangement reasonability of cross beams in a container chassis in related technologies is poor.

Brief Description of the Drawings

The accompanying drawings of the specification, constituting a part of the present application, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the accompanying drawings:

Fig. 1 shows a schematic view of a three-dimensional structure according to an embodiment of a container chassis of the present invention;
Fig. 2 shows a partial enlarged view of a part A of the container chassis in Fig. 1;
Fig. 3 shows a schematic side view of the container chassis in Fig. 1;
Fig. 4 shows a schematic top view of the container chassis in Fig. 1;
Fig. 5 shows a schematic cross-sectional view of the container chassis in Fig. 4; and
Fig. 6 shows a partial enlarged view of a part B of the container chassis in Fig. 5.

The above accompanying drawings have the following reference numerals:
1. chassis part; 11. first side beam; 12. second side beam; 20. cross beam group; 21. first cross beam; 211. first flat plate; 212. first vertical plate; 213. second flat plate; 22. first carrying group; 23. second carrying group; 24. third carrying group; 25. fourth carrying group; 26. fifth carrying group; 27. sixth carrying group; 30. second cross beam; 31. third flat plate; 32. second vertical plate; 33. fourth flat plate; 40. support assembly; 41. first main oblique beam; 42. second main oblique beam; 43. third main oblique beam; 44. first auxiliary oblique beam; 45. second auxiliary oblique beam; 46. support beam.

Detailed Description of the Embodiments

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are merely some embodiments of the present invention rather than all the embodiments. The following descriptions of at least one exemplary embodiment are only illustrative in fact, and should not constitute any limitation on the present invention and the application or use of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
As shown in Fig. 1, Fig. 4 and Fig. 5, in this embodiment, a container chassis includes a chassis part 1. The chassis part 1 includes a first side beam 11, a second side beam 12, a plurality of cross beam groups 20 and a plurality of second cross beams 30. The second side beam 12 and the first side beam 11 are arranged at an interval. The plurality of cross beam groups 20 are arranged between the first side beam 11 and the second side beam 12 at intervals, and each of the plurality of cross beam groups 20 includes a plurality of first cross beams 21. At least one second cross beam 30 is arranged between any two adjacent cross beam groups 20 of the plurality of cross beam groups 20. The height of the first cross beam 21 is less than the height of the second cross beam 30.
By applying the technical solution of this embodiment, a first side beam 11 and a second side beam 12 are arranged at an interval, a plurality of cross beam groups 20 are arranged between the first side beam 11 and the second side beam 12 at intervals, and each of the plurality of cross beam groups 20 includes a plurality of first cross beams 21. At least one second cross beam 30 is arranged between any two adjacent cross beam groups 20 of the plurality of cross beam groups 20. Specifically, the height of the first cross beam 21 is less than the height of the second cross beam 30. Through the above arrangement, the plurality of cross beam groups 20 can achieve the connection between the first side beam 11 and the second side beam 12 and can ensure the structural strength of the chassis part 1. Moreover, at least one second cross beam 30 is arranged between any two adjacent cross beam groups 20, and the height of the second cross beam 30 is greater than the height of the first cross beam 21, so that the structural strength of the second cross beam 30 is greater than the structural strength of the first cross beam 21. The second cross beam 30 is connected between the first side beam 11 and the second side beam 12, so that the structural strength of the chassis part 1 can be further improved. The above arrangement can improve the arrangement reasonability of the chassis part 1, which can not only ensure the structural strength of the chassis part 1, but also avoid the excessive weight of the chassis part 1. Therefore, the technical solution of this embodiment effectively solves the problem that the chassis is easily damaged due to the fact that the arrangement reasonability of cross beams in a container chassis in related technologies is poor.
It should be noted that in this embodiment, the plurality of first cross beams 21 and the plurality of second cross beams 30 can provide strength and rigidity to the chassis part 1 while considering load transfer. The height of the second cross beam 30 in a load transfer region is greater than the height of the first cross beam 21. During container transportation, the chassis part 1 is uniformly stressed through the load transfer region, so that the container is more reasonably stressed, and the reasonability of structural design is enhanced.
As shown in Fig. 6, in this embodiment, the ratio of the height of the first cross beam 21 to the height of the second cross beam 30 is between 0.5 and 0.8. The setting of the above ratio can balance structural strength and weight reduction. Specifically, the ratio of the height of the first cross beam 21 to the height of the second cross beam 30 is 0.6.
As shown in Fig. 5, in this embodiment, in the direction from the first end of the first side beam 11 to the second end of the first side beam 11, the number of the first cross beams 21 in at least some of the cross beam groups 20 in the plurality of cross beam groups 20 is different. The above arrangement can ensure the structural strength.
As shown in Fig. 5 and Fig. 6, in this embodiment, the top surface of the first cross beam 21 is flush with the top surface of the second cross beam 30. The above arrangement can make the upper surface of the chassis part 1 flush, thereby making the plate body on the chassis part 1 more flush.
As shown in Fig. 4 and Fig. 5, in this embodiment, the plurality of cross beam groups 20 include a first carrying group 22, a second carrying group 23, a third carrying group 24, a fourth carrying group 25, a fifth carrying group 26 and a sixth carrying group 27 which are sequentially arranged in the direction from the first end of the first side beam 11 to the second end of the first side beam 11; the number of the first cross beams 21 in the first carrying group 22 is greater than the number of the first cross beams 21 in the second carrying group 23; the number of the first cross beams 21 in the third carrying group 24 is equal to the number of the first cross beams 21 in the fourth carrying group 25; and the number of the first cross beams 21 in the fourth carrying group 25 to the sixth carrying group 27 gradually decreases. The above arrangement can ensure the structural strength. Specifically, the first carrying group 22 is located near the head of a vehicle, and the sixth carrying group 27 is located near the tail of the vehicle. The carrying capacity of the first carrying group 22 is greater than the carrying capacity of the second carrying group 23; the third carrying group 24 and the fourth carrying group 25 have the same carrying capacity; the carrying capacity of the fifth carrying group 26 is greater than the carrying capacity of the sixth carrying group 27; and the sum of the carrying capacity of the first carrying group 22 and the carrying capacity of the second carrying group 23 is greater than the carrying capacity of the fifth carrying group 26 and the carrying capacity of the sixth carrying group 27. In this way, the overall structural strength of the chassis part 1 is better, and the stability of transportation of synthetic resin is ensured.
As shown in Fig. 4 and Fig. 5, in this embodiment, in the first carrying group 22, the distance between two adjacent first cross beams 21 which are far away from the second cross beam 30 is greater than or equal to the distance between two adjacent first cross beams 21 which are close to the second cross beam 30; in the third carrying group 24, in the direction from the first end of the first side beam 11 to the second end of the first side beam 11, a plurality of distances formed between any two adjacent first cross beams 21 first increase and then decrease; and in the fourth carrying group 25, in the direction from the first end of the first side beam 11 to the second end of the first side beam 11, a plurality of distances formed between any two adjacent first cross beams 21 first increase, then decrease and finally increase again. Through the above arrangement, the structural strength can be further improved, and the overall weight can be reduced.
As shown in Fig. 4 and Fig. 5, in this embodiment, one second cross beam 30 is arranged between the first carrying group 22 and the second carrying group 23; two second cross beams 30 are arranged between the second carrying group 23 and the third carrying group 24; one second cross beam 30 is arranged between the third carrying group 24 and the fourth carrying group 25; two second cross beams 30 are arranged between the fourth carrying group 25 and the fifth carrying group 26; and two second cross beams 30 are arranged between the fifth carrying group 26 and the sixth carrying group 27. The above arrangement can further improve the structural strength of the chassis part 1.
Specifically, as shown in Fig. 4, in this embodiment, a first connecting beam is arranged in the second carrying group 23, the first connecting beam is arranged parallel to the first side beam 11, and the distance a between the first connecting beam and the first side beam 11 and the distance b between the first connecting beam and the second side beam 12 satisfy: 1.3≤a/b≤4.
Similarly, a second connecting beam is arranged in the fifth carrying group 26, the second connecting beam is arranged parallel to the first side beam 11, and the second connecting beam is arranged corresponding to the first connecting beam. The first connecting beam and the second connecting beam are respectively arranged corresponding to a support assembly 40, so that the structural strength at parts without support assemblies 40 can be improved.
As shown in Fig. 6, in this embodiment, the first cross beam 21 includes a first flat plate 211, a first vertical plate 212 and a second flat plate 213; the first flat plate 211 and the second flat plate 213 are connected with two ends of the first vertical plate 212 and are arranged oppositely; a first opening is formed among the first flat plate 211, the second flat plate 213 and the first vertical plate 212; the first flat plate 211 and the second flat plate 213 have the same size; the second cross beam 30 includes a third flat plate 31, a second vertical plate 32 and a fourth flat plate 33; the third flat plate 31 and the fourth flat plate 33 are connected with two ends of the second vertical plate 32 and are arranged oppositely; a second opening is formed between the third flat plate 31 and the fourth flat plate 33; and the cross-sectional area of the third flat plate 31 is equal to the cross-sectional area of the fourth flat plate 33. The above first cross beam 21 and second cross beam 30 are simple in structure and easy to process, and can make the overall structural strength of the chassis part 1 better.
Specifically, the ratio of the width of the first flat plate 211 to the width of the third flat plate 31 is between 0.7 and 0.8, and the ratio of the thickness of the first flat plate 211 to the thickness of the third flat plate 31 is between 0.5 and 0.7.
As shown in Fig. 5 and Fig. 6, in this embodiment, the directions of the first openings of the plurality of first cross beams 21 are the same; the directions of the second openings of the two second cross beams 30 between the second carrying group 23 and the third carrying group 24 are opposite; the directions of the second openings of the two second cross beams 30 between the fourth carrying group 25 and the fifth carrying group 26 are opposite; and the directions of the second openings of the two second cross beams 30 between the fifth carrying group 26 and the sixth carrying group 27 are opposite. The directions of the plurality of first openings are the same, so that the chassis part 1 is easier to process, and the container has less resistance when operating on the body of the vehicle.
As shown in Fig. 5 and Fig. 6, in this embodiment, the directions of the second openings of the two second cross beams 30 between the second carrying group 23 and the third carrying group 24 are opposite, a connecting seat can be arranged between the two second cross beams 30, and the connecting seat can be matched with an end of a lifting structure.
As shown in Fig. 1 to Fig. 4, in this embodiment, the container chassis further includes a plurality of support assemblies 40 arranged at intervals; the plurality of support assemblies 40 are located above the chassis part 1 and are connected with the chassis part 1; each of the plurality of support assemblies 40 includes a first main oblique beam 41, a second main oblique beam 42 and a third main oblique beam 43; the first end of the first main oblique beam 41, the first end of the second main oblique beam 42 and the first end of the third main oblique beam 43 are connected; the joint among the first end of the first main oblique beam 41, the first end of the second main oblique beam 42 and the first end of the third main oblique beam 43 is located directly above the first side beam 11; the second end of the first main oblique beam 41 is connected with the middle of the chassis part 1; the second end of the second main oblique beam 42 and the second end of the third main oblique beam 43 are both connected with the first side beam 11; and a triangular structure is formed among the first side beam 11, the second main oblique beam 42 and the third main oblique beam 43. The arrangement of the support assembly 40 can ensure that the cargos inside the container are more easily flow out from an unloading port. Furthermore, the arrangement of the first main oblique beam 41, the second main oblique beam 42 and the third main oblique beam 43 can ensure the structural strength of the support assembly 40.
As shown in Fig. 1 to Fig. 4, in this embodiment, support assemblies 40 are arranged in the chassis part, and the positions where the corresponding support assemblies 40 are connected with the chassis part 1 are all provided with carrying beam structures (on the first cross beam 21, the second cross beam 30, or the first side beam 11), so as to provide excellent support for arched floors. Furthermore, a support beam 46 is arranged between the first main oblique beam 41 and the chassis part 1, and then, the support beam 46 can be connected with the chassis part 1, so that the structural design strength is improved, and the practicability is excellent. Moreover, the function of oblique unloading can be achieved.
As shown in Fig. 1 to Fig. 4, in this embodiment, the second end of the first main oblique beam 41 is connected with the first cross beam 21 or the second cross beam 30. The above arrangement can make the position of the first main oblique beam 41 more stable.
As shown in Fig. 1 to Fig. 4, in this embodiment, the support assembly 40 further includes a plurality of first auxiliary oblique beams 44 and a plurality of second auxiliary oblique beams 45 located on two sides of the first main oblique beam 41; the first end of each first auxiliary oblique beam 44 is connected with the first main oblique beam 41; the first end of each second auxiliary oblique beam 45 is connected with the first main oblique beam 41; the second end of each first auxiliary oblique beam 44 is connected with the first cross beam 21 or the second cross beam 30; and the second end of each second auxiliary oblique beam 45 is connected with the first cross beam 21 or the second cross beam 30. The arrangement of the above first auxiliary oblique beam 44 and second auxiliary oblique beam 45 can improve the structural strength of the support assembly 40.
Specifically, the plurality of first auxiliary oblique beams 44 are arranged in parallel to the second main oblique beam 42, and the plurality of second auxiliary oblique beams 45 are arranged in parallel to the third main oblique beam 43.
As shown in Fig. 1 to Fig. 4, in this embodiment, each support assembly 40 further includes a support beam 46, the first end of the support beam 46 is connected with the first main oblique beam 41, and the second end of the support beam 46 is connected with the first side beam 11 or the first cross beam 21 or the second cross beam 30. The arrangement of the support beam 46 can further improve the stability of the first main oblique beam 41, the second main oblique beam 42 and the third main oblique beam 43.
Specifically, in this embodiment, the support assembly 40 can play a role in supporting and cooperating with an unloading door for unloading. The first cross beams 21 and the second cross beams 30, which are unevenly spaced in the chassis part 1, are main load-bearing structures, and the height of the second cross beam 30 is greater than the height of the first cross beam 21. There are a total of eight second cross beams 30 mainly arranged at the position of a support seat of a hydraulic lifting frame, which can serve as a load transfer region. There are a total of twenty-one first cross beams 21 arranged at unequal intervals along the length direction of the first side beam 11, and under the condition that the strength can meet the usage requirement, the optimized arrangement and weight reduction design of the container chassis are achieved. Corresponding support assemblies 40 are arranged at the arched positions of the floor in the chassis part 1 to play a role in reinforcing the structures at the arched positions of the floor of the chassis, so as to complete safe unloading of the container, and the arranged first main oblique beams 41 all extend to the first cross beam 21 or the second cross beam 30 to make the support stress structure more reasonable, thereby ensuring the smooth unloading of the cargosin the container. A push rod mounting seat of the hydraulic lifting frame is located between two second cross beams 30 to ensure strength, and is matched with the hydraulic lifting frame to achieve a lifting process of a hydraulic push rod to the container.
According to another aspect of the present application, a container is provided. The container in this embodiment includes a container chassis, and the container chassis is the above container chassis. The above container chassis has better structural strength and can effectively achieve weight reduction, so that the container with the above container chassis also has the above advantages.
Specifically, in this embodiment, four groups of unloading doors are arranged on the side wall of the container, and support assemblies are arranged on both sides of each group of unloading doors. When the unloading doors are opened for unloading, the unloading is carried out by gravity in the early stage and by tilting the container in the later stage. Through the design of cooperation of multiple structures, safe unloading of synthetic resin bulk cargos is achieved, steps such as unloading and hoisting are simplified, the production cost is reduced, and the production efficiency is improved.
Four groups of unloading doors are arranged at the bottom of one side of the container in this embodiment, which solves the problems of difficulty in unloading synthetic resin containers in cargo yards, pollution of cargos during unloading and loss during unloading, simplifies the installation and operation steps of complex mechanical facilities such as unloading and hoisting facilities, reduces the production cost, and improves the economic benefit.
The above descriptions are only preferred embodiments of the present invention, but are not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and changes may be made in the present invention. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

A container chassis, comprising a chassis part (1), the chassis part (1) comprising:
a first side beam (11);

a second side beam (12), the second side beam (12) and the first side beam (11) being arranged at an interval;

a plurality of cross beam groups (20) arranged between the first side beam (11) and the second side beam (12) at intervals, each of the plurality of cross beam groups (20) comprising a plurality of first cross beams (21); and

a plurality of second cross beams (30), at least one second cross beam (30) being arranged between any two adjacent cross beam groups (20) of the plurality of cross beam groups (20),

wherein a height of the first cross beam (21) is less than a height of the second cross beam (30).
The container chassis according to claim 1, wherein a ratio of the height of the first cross beam (21) to the height of the second cross beam (30) is between 0.5 and 0.8.
The container chassis according to claim 1, wherein in a direction from a first end of the first side beam (11) to a second end of the first side beam (11), a number of the first cross beams (21) in at least some of the cross beam groups (20) in the plurality of cross beam groups (20) is different, and/or a top surface of the first cross beam (21) is flush with a top surface of the second cross beam (30).
The container chassis according to claim 1, wherein the plurality of cross beam groups (20) comprise a first carrying group (22), a second carrying group (23), a third carrying group (24), a fourth carrying group (25), a fifth carrying group (26) and a sixth carrying group (27) which are sequentially arranged in a direction from a first end of the first side beam (11) to a second end of the first side beam (11); a number of the first cross beams (21) in the first carrying group (22) is greater than a number of the first cross beams (21) in the second carrying group (23); a number of the first cross beams (21) in the third carrying group (24) is equal to a number of the first cross beams (21) in the fourth carrying group (25); and a number of the first cross beams (21) in the fourth carrying group (25) to the sixth carrying group (27) gradually decreases.
The container chassis according to claim 4, wherein in the first carrying group (22), a distance between two adjacent first cross beams (21)which are far away from the second cross beam (30) is greater than or equal to a distance between two adjacent first cross beams (21) which are close to the second cross beam (30); in the third carrying group (24), in the direction from the first end of the first side beam (11) to the second end of the first side beam (11), a plurality of distances formed between any two adjacent first cross beams (21) first increase and then decrease; and in the fourth carrying group (25), in the direction from the first end of the first side beam (11) to the second end of the first side beam (11), a plurality of distances formed between any two adjacent first cross beams (21) first increase, then decrease and finally increase again.
The container chassis according to claim 4, wherein one second cross beam (30) is arranged between the first carrying group (22) and the second carrying group (23); two second cross beams (30) are arranged between the second carrying group (23) and the third carrying group (24);one second cross beam (30) is arranged between the third carrying group (24) and the fourth carrying group (25); two second cross beams (30) are arranged between the fourth carrying group (25) and the fifth carrying group (26); and two second cross beams (30) are arranged between the fifth carrying group (26) and the sixth carrying group (27).
The container chassis according to claim 4, wherein the first cross beam (21) comprises a first flat plate (211), a first vertical plate (212) and a second flat plate (213); the first flat plate (211) and the second flat plate (213) are connected with two ends of the first vertical plate (212) and are arranged oppositely; a first opening is formed among the first flat plate (211), the second flat plate (213) and the first vertical plate (212); the first flat plate (211) and the second flat plate (213) have a same size; the second cross beam (30) comprises a third flat plate (31), a second vertical plate (32) and a fourth flat plate (33); the third flat plate (31) and the fourth flat plate (33) are connected with two ends of the second vertical plate (32) and are arranged oppositely; a second opening is formed between the third flat plate (31)and the fourth flat plate (33); and a cross-sectional area of the third flat plate (31) is equal to a cross-sectional area of the fourth flat plate (33).
The container chassis according to claim 7, wherein directions of the first openings of the plurality of first cross beams (21) are a same; and/or directions of the second openings of two second cross beams (30) between the second carrying group (23) and the third carrying group (24) are opposite; and/or directions of the second openings of two second cross beams (30) between the fourth carrying group (25) and the fifth carrying group (26) are opposite; and/or directions of the second openings of two second cross beams (30) between the fifth carrying group (26) and the sixth carrying group (27) are opposite.
The container chassis according to any one of claims 1 to 8, wherein the container chassis further comprises a plurality of support assemblies (40) arranged at intervals; the plurality of support assemblies (40) are located above the chassis part (1) and are connected with the chassis part (1); each of the plurality of support assemblies (40) comprises a first main oblique beam (41), a second main oblique beam (42) and a third main oblique beam (43); a first end of the first main oblique beam (41), a first end of the second main oblique beam (42) and a first end of the third main oblique beam (43) are connected; a joint among the first end of the first main oblique beam (41), the first end of the second main oblique beam (42) and the first end of the third main oblique beam (43) is located directly above the first side beam (11); a second end of the first main oblique beam (41) is connected with a middle of the chassis part (1); a second end of the second main oblique beam (42) and a second end of the third main oblique beam (43) are both connected with the first side beam (11); and a triangular structure is formed among the first side beam (11), the second main oblique beam (42) and the third main oblique beam (43).
The container chassis according to claim 9, wherein the second end of the first main oblique beam (41) is connected with the first cross beam (21) or the second cross beam (30).
The container chassis according to claim 9, wherein the support assembly (40) further comprises a plurality of first auxiliary oblique beams (44) and a plurality of second auxiliary oblique beams (45) located on two sides of the first main oblique beam (41); a first end of each first auxiliary oblique beam (44) is connected with the first main oblique beam (41); a first end of each second auxiliary oblique beam (45) is connected with the first main oblique beam (41); a second end of each first auxiliary oblique beam (44) is connected with the first cross beam (21) or the second cross beam (30); and a second end of each second auxiliary oblique beam (45) is connected with the first cross beam (21) or the second cross beam (30).
The container chassis according to claim 9, wherein each support assembly (40) further comprises a support beam (46), a first end of the support beam (46) is connected with the first main oblique beam (41), and a second end of the support beam (46) is connected with the first side beam (11) or the first cross beam (21) or the second cross beam (30).
A container, comprising a container chassis, wherein the container chassis is the container chassis according to any one of claims 1 to 12.