Rear end supporting structure for automotive liquefied natural gas cylinder

Abstract

The utility model relates to the field of supporting structures, and discloses a vehicle liquefied natural gas cylinder rear end supporting structure which comprises a supporting shaft, an inner rear supporting end socket, an inner shaft sleeve and an outer shaft sleeve are sequentially arranged on the outer wall of the supporting shaft from left to right, an inner protruding plate is arranged on the left side of the inner shaft sleeve, and a shaft outer protruding ring is arranged on the inner side of the inner protruding plate. A macromolecule bushing ring is arranged on the outer wall of the supporting shaft, an outer rear shaft sleeve protruding plate is arranged on the left side of the outer shaft sleeve, a bushing ring protruding ring is arranged on the inner side of the outer rear shaft sleeve protruding plate, and the left side of the bushing ring protruding ring is fixedly connected to the right side of the macromolecule bushing ring. According to the automobile liquefied natural gas cylinder rear end structure, through reduction of the size of the supporting shaft, replacement of the epoxy glass fiber reinforced plastic, embedded connection of the inner protruding plate and the shaft outer protruding ring and embedded connection of the outer rear shaft sleeve protruding plate and the lining ring protruding ring, improvement of heat insulation measures of the automobile liquefied natural gas cylinder rear end structure and improvement of safety between the inner container and the outer container are achieved.

Description

Technical Field

[0001] The utility model relates to the field of supporting structures, in particular to a rear end supporting structure of a liquefied natural gas cylinder for a vehicle. Background Art

[0002] With the increasing demand for energy conservation and environmental protection, the demand for new energy vehicles is also increasing. As a new energy vehicle, liquefied natural gas vehicles have the advantages of energy conservation and environmental protection, and are widely promoted, especially in the heavy-duty vehicle field.

[0003] Liquefied natural gas (LNG) cylinders are essential components for LNG vehicles. With the development of environmental protection and clean energy in recent years, LNG cylinders are increasingly being deployed in heavy trucks, light trucks, buses, and other fields. Customers are placing increasing demands on the thermal insulation and safety of LNG cylinders for vehicles. Traditional cylinder rear-end support structures have relatively simple support shafts, lacking effective insulation measures and safety improvements. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a rear end support structure for a liquefied natural gas cylinder for a vehicle, aiming to improve the insulation measures and safety issues.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a rear end support structure for a liquefied natural gas cylinder for a vehicle, comprising a support shaft, wherein the outer wall of the support shaft from left to right is sequentially provided with an inner rear support head, an inner sleeve and an outer sleeve, the cross-section of the support shaft is circular, the horizontal projection of the support shaft between the inner rear support head and the inner sleeve is an hourglass shape, the left side of the inner sleeve is fixedly connected with an inner convex plate, the inner wall of the inner convex plate is provided with an outer shaft convex ring, the inner wall of the outer shaft convex ring is fixedly connected to the outer wall of the support shaft, the outer wall of the support shaft is provided with a polymer liner ring, the inner wall of the polymer liner ring is provided on the outer wall of the support shaft between the inner sleeve and the outer sleeve, the left side of the outer sleeve is provided with an outer rear sleeve convex plate, the inner wall of the outer rear sleeve convex plate is provided with a liner convex ring, and the left side of the liner convex ring is fixedly connected to the right side of the polymer liner ring.

[0006] Preferably, a through hole is provided at the center of the inner rear support head, and the outer wall of the left end of the support shaft is fixedly connected to the inner wall of the circular hole provided in the inner rear support head.

[0007] Preferably, the outer wall of the inner sleeve is fixedly connected to an inner rear head, a circular hole is provided at the center of the inner rear head, and the inner wall of the inner rear head with the circular hole is fixedly connected to the outer wall of the inner sleeve.

[0008] Preferably, the outer convex ring and the inner convex plate are of a chimeric structure.

[0009] Preferably, a buffer is fixedly connected to the left side of the inner rear head, and the right side of the inner rear support head is fixedly connected to the left side of the inner rear head. The polymer liner ring can be made of epoxy fiberglass.

[0010] Preferably, the inner wall of the liner ring convex ring is fixedly connected to the outer wall of the support shaft, and the outer rear shaft sleeve convex plate and the liner ring convex ring are a chimeric structure.

[0011] Preferably, the outer wall of the outer sleeve is fixedly connected to a support plate, a through hole is opened at the center of the support plate, the outer wall of the outer sleeve is fixedly connected to the inner wall of the through hole of the support plate, and the outer ring wall of the support plate is fixedly connected to an outer rear head.

[0012] Preferably, the centers of the buffer, support shaft, inner rear support head, inner sleeve, inner rear head, outer sleeve, support plate and outer rear head are on the same straight line.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the present invention, the hourglass shape of the horizontal projection of the support shaft between the inner rear support head and the inner sleeve is used to reduce the volume of part of the support shaft and reduce the heat conduction of the support shaft. Then, by replacing the epoxy glass fiber reinforced plastic, the structure is improved in terms of thermal insulation measures.

[0015] 2. In the present invention, the stability of the connection between the support shaft and the inner sleeve is increased by the interlocking connection between the inner convex plate on the left side of the inner sleeve and the outer convex ring of the shaft. The stability of the connection between the support shaft and the outer sleeve is increased by the interlocking connection between the outer rear sleeve convex plate on the left side of the outer sleeve and the liner convex ring on the right side of the polymer liner, thereby achieving an increase in the stability between the inner and outer tanks at the rear end of the vehicle liquefied natural gas cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram of the internal structure of a rear end support structure of a liquefied natural gas cylinder for a vehicle proposed in the utility model;

[0017] Figure 2 This is an enlarged schematic diagram of the support shaft of the rear end support structure of a liquefied natural gas cylinder for a vehicle proposed in the present invention;

[0018] Figure 3 This is a diagram of the internal interlocking structure of the rear end support structure of a liquefied natural gas cylinder for a vehicle proposed in the utility model;

[0019] Figure 4 This is a side structural diagram of the rear end support structure of a vehicle liquefied natural gas cylinder proposed by the utility model.

[0020] Legend:

[0021] 1. Buffer; 2. Inner rear head; 3. Outer rear head; 4. Support plate; 5. Support shaft; 6. Inner rear support head; 7. Outer shaft sleeve; 8. Outer rear shaft sleeve convex plate; 9. Bushing convex ring; 10. Polymer bushing; 11. Outer shaft convex ring; 12. Inner convex plate; 13. Inner shaft sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Reference Figure 1-Figure 4 The utility model provides an embodiment: a rear end support structure of a liquefied natural gas cylinder for a vehicle, including a support shaft 5, the outer wall of the support shaft 5 is sequentially provided with an inner rear support head 6, an inner shaft sleeve 13 and an outer shaft sleeve 7 from left to right, the cross section of the support shaft 5 is circular, and the horizontal projection of the support shaft 5 between the inner rear support head 6 and the inner shaft sleeve 13 is an hourglass shape. The left side of the inner shaft sleeve 13 is fixedly connected with an inner convex plate 12, the inner wall of the inner convex plate 12 is provided with an outer shaft convex ring 11, the inner wall of the outer shaft convex ring 11 is fixedly connected to the outer wall of the support shaft 5, the outer wall of the support shaft 5 is provided with a polymer liner ring 10, the inner wall of the polymer liner ring 10 is provided on the outer wall of the support shaft 5 between the inner shaft sleeve 13 and the outer shaft sleeve 7, the left side of the outer shaft sleeve 7 is provided with an outer rear shaft sleeve convex plate 8, the inner wall of the outer rear shaft sleeve convex plate 8 is provided with a liner convex ring 9, and the left side of the liner convex ring 9 is fixedly connected to the right side of the polymer liner ring 10.

[0024] In this embodiment, Figure 1 For the front, back, left and right directions, the left end of the support shaft 5 and the inner rear support head 6 are first fixed together by double-sided welding. The hourglass shape of the horizontal projection of the support shaft 5 between the inner rear support head 6 and the inner sleeve 13 is used to reduce part of the volume of the support shaft 5, thereby reducing the heat conduction of the support shaft 5; the stability of the connection between the support shaft 5 and the inner sleeve 13 is increased by connecting the inner convex plate 12 on the left side of the inner sleeve 13 and the outer convex ring 11 of the shaft, and the stability of the connection between the support shaft 5 and the outer sleeve 7 is increased by connecting the outer rear sleeve convex plate 8 on the left side of the outer sleeve 7 and the liner convex ring 9 on the right side of the polymer liner 10.

[0025] Reference Figure 2 A through hole is opened at the center position of the inner rear support head 6, and the outer wall of the left end of the support shaft 5 is fixedly connected to the inner wall of the circular hole opened in the inner rear support head 6; the fixed connection between the support shaft 5 and the inner rear support head 6 is a double-sided welding connection, which increases stability and sealing.

[0026] Reference Figure 2 The outer wall of the inner sleeve 13 is fixedly connected to the inner rear head 2, a circular hole is opened at the center position of the inner rear head 2, and the inner wall of the inner rear head 2 with the circular hole is fixedly connected to the outer wall of the inner sleeve 13; through the fixed double-sided welding of the inner rear head 2 and the inner sleeve 13, the stability and sealing of the support shaft 5 and the inner sleeve 13 are increased.

[0027] Reference Figure 3 , the outer convex ring 11 and the inner convex plate 12 are a chimeric structure; through the chimeric structure of the outer convex ring 11 and the inner convex plate 12, the stability of the support shaft 5 and the inner sleeve 13 is increased, and both are made of glass fiber.

[0028] Reference Figure 1 The left side of the inner rear head 2 is fixedly connected with the buffer 1, and the right side of the inner rear support head 6 is fixedly connected to the left side of the inner rear head 2. The material of the polymer liner ring 10 can be epoxy glass fiber reinforced plastic; after the inner rear head 2 and the inner rear support head 6 are welded, the buffer 1 and the inner rear head 2 are fixedly welded.

[0029] Reference Figure 3 The inner wall of the liner ring convex ring 9 is fixedly connected to the outer wall of the support shaft 5, and the outer rear shaft sleeve convex plate 8 and the liner ring convex ring 9 are a chimeric structure; through the chimeric structure of the outer rear shaft sleeve convex plate 8 and the liner ring convex ring 9, the stability of the support shaft 5 and the outer shaft sleeve 7 is increased, and both are made of glass fiber.

[0030] Reference Figure 1-Figure 2 The outer wall of the outer sleeve 7 is fixedly connected to the support plate 4, a through hole is opened at the center of the support plate 4, the outer wall of the outer sleeve 7 is fixedly connected to the inner wall of the through hole of the support plate 4, and the outer ring wall of the support plate 4 is fixedly connected to the outer rear head 3; first, the outer wall of the outer sleeve 7 and the inner wall of the through hole of the support plate 4 are fixedly connected by double-sided welding, and then the outer ring wall of the support plate 4 is welded to the outer rear head 3.

[0031] Reference Figure 1-Figure 4 The centers of the buffer 1, support shaft 5, inner rear support head 6, inner sleeve 13, inner rear head 2, outer sleeve 7, support plate 4 and outer rear head 3 are on the same straight line.

[0032] Working principle: In this embodiment, the centers of the buffer 1, support shaft 5, inner rear support head 6, inner sleeve 13, inner rear head 2, outer sleeve 7, support plate 4 and outer rear head 3 are on the same straight line; the left end of the support shaft 5 and the inner rear support head 6 are fixedly connected together by double-sided welding, and then the inner rear head 2 and the inner sleeve 13 are double-sided welded, the outer sleeve 7 and the support plate 4 are double-sided welded, and then the support plate and the outer rear head 3 are fixedly welded; the support shaft 5 is passed through the inner sleeve 13 , so that the outer convex ring 11 and the inner convex plate 12 are fit together, and then after the inner rear head 2 and the inner rear support head 6 are welded, the buffer 1 and the inner rear head 2 are fixedly welded; the polymer liner ring 10 is fixedly connected to the support shaft 5, and the support shaft 5 passes through the outer shaft sleeve 7, so that the outer rear shaft sleeve convex plate 8 and the liner ring convex ring 9 are fit together, and the volume of the support shaft 5 between the inner rear support head 6 and the inner shaft sleeve 13 is reduced, thereby reducing the heat conduction of the support shaft 5, thereby improving the insulation measures and safety.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rear end support structure for a liquefied natural gas cylinder for a vehicle, comprising a support shaft (5), characterized in that: The outer wall of the support shaft (5) is provided with an inner rear support head (6), an inner sleeve (13) and an outer sleeve (7) in sequence from left to right. The cross section of the support shaft (5) is circular. The horizontal projection of the support shaft (5) between the inner rear support head (6) and the inner sleeve (13) is in the shape of an hourglass. The left side of the inner sleeve (13) is fixedly connected with an inner convex plate (12). The inner wall of the inner convex plate (12) is provided with an outer convex ring (11). The inner wall of the outer convex ring (11) is fixedly connected with the inner convex plate (12). Connected to the outer wall of the support shaft (5), the outer wall of the support shaft (5) is provided with a polymer liner ring (10), the inner wall of the polymer liner ring (10) is provided on the outer wall of the support shaft (5) between the inner shaft sleeve (13) and the outer shaft sleeve (7), the left side of the outer shaft sleeve (7) is provided with an outer rear shaft sleeve convex plate (8), the inner wall of the outer rear shaft sleeve convex plate (8) is provided with a liner ring convex ring (9), and the left side of the liner ring convex ring (9) is fixedly connected to the right side of the polymer liner ring (10).

2. The rear end support structure of a liquefied natural gas cylinder for a vehicle according to claim 1, characterized in that: A through hole is provided at the center of the inner rear support head (6), and the outer wall of the left end of the support shaft (5) is fixedly connected to the inner wall of the circular hole provided in the inner rear support head (6).

3. The rear end support structure of a liquefied natural gas cylinder for a vehicle according to claim 1, characterized in that: The outer wall of the inner shaft sleeve (13) is fixedly connected to the inner rear head (2), a circular hole is provided at the center of the inner rear head (2), and the inner wall of the inner rear head (2) with the circular hole is fixedly connected to the outer wall of the inner shaft sleeve (13).

4. The rear end support structure of a liquefied natural gas cylinder for a vehicle according to claim 1, characterized in that: The outer convex ring (11) and the inner convex plate (12) are of a chimeric structure.

5. The rear end support structure of a liquefied natural gas cylinder for a vehicle according to claim 3, characterized in that: The left side of the inner rear head (2) is fixedly connected to a buffer (1), the right side of the inner rear support head (6) is fixedly connected to the left side of the inner rear head (2), and the material of the polymer liner ring (10) can be epoxy glass fiber reinforced plastic.

6. The rear end support structure of a liquefied natural gas cylinder for a vehicle according to claim 1, characterized in that: The inner wall of the liner ring convex ring (9) is fixedly connected to the outer wall of the support shaft (5), and the outer rear shaft sleeve convex plate (8) and the liner ring convex ring (9) are a chimeric structure.

7. The rear end support structure of a liquefied natural gas cylinder for a vehicle according to claim 1, characterized in that: The outer wall of the outer shaft sleeve (7) is fixedly connected to a support plate (4), a through hole is provided at the center of the support plate (4), the outer wall of the outer shaft sleeve (7) is fixedly connected to the inner wall of the through hole of the support plate (4), and the outer ring wall of the support plate (4) is fixedly connected to the outer rear head (3).

8. The rear end support structure for a liquefied natural gas cylinder for a vehicle according to claim 5, characterized in that: The centers of the buffer (1), the support shaft (5), the inner rear support head (6), the inner shaft sleeve (13), the inner rear head (2), the outer shaft sleeve (7), the support plate (4) and the outer rear head (3) are on the same straight line.

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