Self-adaptive fuel storage tank fixing device suitable for compact space layout

Abstract

The utility model discloses a self-adaptive fuel storage tank fixing device suitable for compact space layout, which comprises a hoop and a mounting base, the hoop is arranged on the mounting base, the hoop can be opened and closed, the hoop is at least divided into three sections, a graphite gasket is arranged on the inner side of the hoop, lugs are respectively arranged at two ends of the opening and closing position of the hoop, and when the hoop is locked, the graphite gasket can be opened and closed. A bolt penetrates through the two convex lugs, a shifting fork is arranged on the outer side of one convex lug, an elastic element is arranged between the outer side of the convex lug and the inner side of the shifting fork, the bolt is sleeved with the elastic element, and a nut used for locking is arranged at the tail end of the bolt. Through reasonable combination design of compressible performance parameters of elastic elements such as the spring and the graphite gasket, the working radial size and the holding force of the sectional type clamp can be adaptively adjusted within a certain range, so that the influence of random fluctuation of the pressure of a fuel medium in the storage tank on the overall dimension of the storage tank is eliminated or inhibited; and the outer surface of the storage tank is always, continuously and reliably kept in a clinging state.

Description

Technical Field

[0001] The utility model discloses a fixing device, in particular to a fuel tank fixing device whose working size and clamping force can be adjusted adaptively to meet the requirements of the compact space layout of fuel cell vehicles. Background Technique

[0002] In recent years, major breakthroughs have been made in the development and utilization technology of hydrogen energy represented by fuel cells, providing important solutions for realizing zero-emission energy utilization. For example, a hydrogen fuel cell vehicle with several hydrogen storage tanks (such as a "3+3+1" planar layout for 10 hydrogen storage tanks) configured as the power source, and the tank body of its hydrogen storage tank adopts carbon fiber material to meet the requirements of its lightweight design. During use, when the rated volume of hydrogen (the total weight usually reaches 200 kg after a single hydrogen storage tank is filled with the rated volume of hydrogen) is filled into the tank, the outer diameter of the tank will increase accordingly; as the hydrogen in the hydrogen storage tank is continuously consumed, the outer diameter of the tank will gradually decrease. Therefore, in actual application, the variation amplitude of the outer diameter of the hydrogen storage tank is generally designed within the range of ±5 mm.

[0003] Currently, in the application of the fuel tank fixing technology of hydrogen fuel cell vehicles, there is no existing fixing technology that can realize the fuel tank fixing device with the above usage requirements. Summary of the Invention

[0004] The purpose of the utility model is to overcome the above deficiencies and provide a fuel tank fixing device whose working size and clamping force can be adjusted adaptively to meet the requirements of the compact space layout of fuel cell vehicles.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] An adaptive fuel tank fixing device suitable for compact space layout, including a clamp and a mounting base. The clamp is arranged on the mounting base, the clamp can be opened and closed, the clamp is at least divided into three sections, a graphite gasket is arranged on the inner side of the clamp, lugs are respectively arranged at both ends of the opening and closing part of the clamp. When the clamp is locked, a bolt passes through the two lugs, a fork is arranged on the outer side of one of the lugs, an elastic element is arranged between the outer side of the lug and the inner side of the fork, the elastic element is sleeved on the bolt, and a nut for locking is arranged at the end of the bolt.

[0007] A further improvement of the utility model lies in that: the clamp is divided into two movable sections and one fixed section. A pin hole is arranged at the lower end of the movable section, a pin shaft is arranged in the pin hole, and a straight-through sleeve is sleeved on the pin shaft, that is, the lower end of the movable section is connected to the mounting base and axially limited by a circlip. The upper end of the movable section is fixed to the lug by welding, and the fixed section is fixed to the mounting base by welding.

[0008] A further improvement of the present utility model lies in that the clamp and the graphite gasket are integrally formed.

[0009] A further improvement of the present utility model lies in that a sleeve is sleeved on the bolt.

[0010] A further improvement of the present utility model lies in that an inspection opening is provided on the shift fork.

[0011] The present utility model has the following advantages compared with the prior art:

[0012] Through the reasonable combination design of the compressible performance parameters of elastic elements such as springs and graphite gaskets, the working radial dimension and the clamping force of the segmented clamp of the present utility model can be adaptively adjusted within a certain range, so as to eliminate or suppress the influence of the random fluctuation of the pressure of the fuel medium inside the storage tank on its outer contour dimension, and always maintain a continuously reliable close contact state with the outer surface of the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is Figure 1 the schematic structural diagram of part A in

[0015] Figure 3 is Figure 1 the schematic structural diagram of part B in

[0016] Reference numerals in the figures: 1 - clamp, 2 - mounting base, 3 - graphite gasket, 4 - lug, 5 - bolt, 6 - header cylinder, 7 - elastic element, 8 - nut, 9 - pin shaft, 10 - straight-through sleeve, 11 - circlip, 12 - sleeve, 13 - inspection opening. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The elements and features described in one embodiment of the present utility model can be combined with the elements and features shown in one or more other embodiments. It should be noted that for the purpose of simplicity and clarity, the description omits the representation and description of components and processes that are irrelevant to the present utility model and are known to those of ordinary skill in the art. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0018] The following further describes the present utility model in conjunction with the accompanying drawings: An adaptive fuel storage tank fixing device applicable to a compact space layout, comprising a clamp 1 and a mounting base 2. The clamp 1 is arranged on the mounting base 2 and is openable and closable. The clamp 1 is at least divided into three segments, namely two movable segments 1-1 and a fixed segment 1-2. A pin hole is provided at the lower end of the movable segment 1-1. A pin shaft 9 is arranged in the pin hole, and a straight-through sleeve 10 is sleeved on the pin shaft 9. That is, the lower end of the movable segment 1-1 is connected to the mounting base 2 and axially limited by a circlip 11. The upper end of the movable segment 1-1 is fixed to a lug 4 by welding, and the fixed segment 1-2 is fixed to the mounting base 2 by welding.

[0019] A graphite gasket 3 is arranged inside the clamp 1. The clamp 1 and the graphite gasket 3 can be formed separately or integrally. The integrally formed structure is for convenient installation.

[0020] Lugs 4 are respectively arranged at both ends of the opening and closing part of the clamp 1, that is, one on the left and one on the right, used in pairs, and a channel through which a bolt 5 passes is provided on the protruding surface. When the clamp 1 is locked, a bolt 5 passes through the two lugs 4. A fork 6 is arranged outside one of the lugs 4. An elastic element 7 is arranged between the outside of the lug 4 and the inside of the fork 6. The elastic element 7 is sleeved on the bolt 5. A sleeve 12 is sleeved on the bolt 5. A nut 8 (with a washer) for locking is arranged at the end of the bolt 5. During use, the locking and loosening of the segmented clamp are realized through the threaded cooperation of the bolt 5 and the nut 8. An inspection opening 13 is arranged on the fork 6, which is used for visually determining the mark of the clamping state of the clamp.

[0021] Through the reasonable combination design of the compressible performance parameters of elastic elements such as springs and graphite gaskets in the present utility model, the working radial dimension and the clamping force of its segmented clamp can be adaptively adjusted within a certain range to eliminate or suppress the influence of the random fluctuation of the fuel medium pressure inside the storage tank on its outer contour dimension, and always maintain a continuously reliable tight state with the outer surface of the storage tank.

[0022] Finally, it should be noted that: Although the present utility model and its advantages have been described in detail above, it should be understood that various changes, substitutions and transformations can be made without exceeding the spirit and scope of the present utility model defined by the appended claims. Moreover, the scope of the present utility model is not limited to the specific embodiments of the processes, devices, means, methods and steps described in the specification. Those of ordinary skill in the art will easily understand from the disclosure of the present utility model that according to the present utility model, processes, devices, means, methods or steps that can perform substantially the same functions as the corresponding embodiments described herein or obtain substantially the same results can be used, existing and to be developed in the future. Therefore, the appended claims are intended to include such processes, devices, means, methods or steps within their scope.

Claims

1. An adaptive fuel storage tank fixing device applicable to a compact space layout, comprising a clamp (1) and a mounting base (2), the clamp (1) is arranged on the mounting base (2), the clamp (1) is openable and closable, and is characterized in that: The clamp (1) is at least divided into three sections. A graphite gasket (3) is provided on the inner side of the clamp (1). Lugs (4) are respectively provided at both ends of the opening and closing part of the clamp (1). When the clamp (1) is locked, a bolt (5) passes through the two lugs (4). A fork (6) is provided on the outer side of one of the lugs (4). An elastic element (7) is provided between the outer side of the lug (4) and the inner side of the fork (6). The elastic element (7) is sleeved on the bolt (5), and a nut (8) for locking is provided at the end of the bolt (5).

2. The adaptive fuel storage tank fixing device applicable to a compact space layout according to claim 1, characterized in that: The clamp (1) is divided into two movable sections (1-1) and a fixed section (1-2). A pin hole is provided at the lower end of the movable section (1-1). A pin shaft (9) is provided in the pin hole. A straight-through sleeve (10) is sleeved on the pin shaft (9). That is, the lower end of the movable section (1-1) is connected to the mounting base (2) and axially limited by a circlip (11). The upper end of the movable section (1-1) is fixed to the lug (4) by welding. The fixed section (1-2) is fixed to the mounting base (2) by welding.

3. The adaptive fuel storage tank fixing device applicable to a compact space layout according to claim 1, wherein: The clamp (1) and the graphite gasket (3) are integrally formed.

4. The adaptive fuel storage tank fixing device applicable to a compact space layout according to claim 1, characterized in that: A sleeve (12) is sleeved on the bolt (5).

5. The adaptive fuel storage tank fixing device applicable to a compact space layout according to claim 1, characterized in that: An inspection opening (13) is provided on the fork (6).

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