A plastic fuel tank fixing device and a loader

Abstract

The present invention relates to the technical field of fuel tank assembly. Its purpose is to provide a plastic fuel tank fixing device, a fixing method and a loader, with a simplified installation structure and low cost, which can effectively protect the fuel tank and ensure its service life. The above-mentioned plastic fuel tank fixing device includes a fuel tank protection mechanism installed at the bottom of the fuel tank body (1) through a first installation mechanism, a second installation mechanism for installing the fuel tank protection mechanism equipped with the fuel tank body (1) onto the counterweight (2), and a third installation mechanism for installing the counterweight (2) equipped with the fuel tank body (1) and the fuel tank protection mechanism onto the vehicle frame (3). The present invention solves the problems of the existing complex and costly fixing structure of plastic fuel tanks, the lack of a protection mechanism, and the easy damage of fuel tanks.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel tank assembly, and particularly relates to a plastic fuel tank fixing device and a loader. Background Art

[0002] Most of the fuel tanks of loaders are arranged at the rear of the loader frame and are usually welded by metal steel plates. The whole fuel tank is fixed in cooperation with the frame through mounting brackets and frames. However, the fuel tank made of metal material is heavy, not easy to install, and easy to rust. Therefore, non-metal fuel tanks, such as plastic fuel tanks, have emerged. At present, the rear-mounted plastic fuel tank is still fixed on the frame by means of bolt connection using a formed box body of an installation frame or steel plate welding. For example, Chinese Patent Document CN206520481U discloses a frame-type rotational molding fuel tank for a loader, including a fuel tank main body made of rotational molding material. The fuel tank main body is fixed in a metal frame through a fastening device, and the metal frame is rigidly connected to the frame by bolts. However, the above fuel tank fixing method requires a separate configuration of a metal frame, which is usually made of bent parts or profile steel pipes by welding, and corresponding assembly structures need to be provided on the metal frame and the frame, making the fuel tank fixing structure complex and costly. In addition, the bottom and rear of the fixed fuel tank are hollow and there is no protection mechanism, which is easy to be bumped and worn during vehicle operation, affecting the service life of the fuel tank. Summary of the Invention

[0003] Therefore, the technical problem to be solved or improved by the present invention is to overcome the defects in the prior art that the fixing structure of the plastic fuel tank is complex and costly, and there is a lack of a protection mechanism, making the fuel tank easy to be damaged. Thus, a plastic fuel tank fixing device, a fixing method and a loader are provided, which simplify the installation structure, have low cost, can effectively protect the fuel tank and ensure its service life.

[0004] To solve the above problems, the present invention provides a plastic fuel tank fixing device, including a fuel tank protection mechanism installed at the bottom of the fuel tank body through a first installation mechanism, a second installation mechanism for installing the fuel tank protection mechanism equipped with the fuel tank body on a counterweight, and a third installation mechanism for installing the counterweight equipped with the fuel tank body and the fuel tank protection mechanism on the frame.

[0005] Preferably, the lower surface of the counterweight has an inner concave platform, and the fuel tank protection mechanism is installed on the inner concave platform.

[0006] Preferably, the fuel tank protection mechanism is a protection bottom plate, and the shape of the lower surface of the protection bottom plate is the same as that of the inner concave platform.

[0007] Preferably, the counterweight has an inner concave frame, and the fuel tank body is placed in the inner concave frame.

[0008] Preferably, the first mounting mechanism includes at least two straps which are wound around the outer wall of the fuel tank body and whose two ends are detachably fixed to the protective bottom plate; both the second mounting mechanism and the third mounting mechanism are fasteners.

[0009] A method for fixing a plastic fuel tank, using the above plastic fuel tank fixing device, the method for fixing the plastic fuel tank includes:

[0010] ① Fixing the bottom of the fuel tank body to the fuel tank protection mechanism through the first mounting mechanism;

[0011] ② Fixing the fuel tank protection mechanism equipped with the fuel tank body to the counterweight through the second mounting mechanism;

[0012] ③ Fixing the counterweight equipped with the fuel tank body and the fuel tank protection mechanism to the vehicle frame through the third mounting mechanism.

[0013] Preferably, in the step ①, the fuel tank protection mechanism is a protective bottom plate, and the first mounting mechanism is at least two straps, and the straps are wound around the outer wall of the fuel tank body and its two ends are fixed to the protective bottom plate.

[0014] Preferably, in the step ②, the lower surface of the counterweight has a concave platform, and the protective bottom plate is fixed to the concave platform; the counterweight has a concave frame, and after assembly, the fuel tank body is placed in the concave frame.

[0015] Preferably, in the step ③, a part of the side wall of the vehicle frame is placed between the fuel tank body and the concave frame, and then the counterweight is fixed to the vehicle frame.

[0016] A loader uses the above plastic fuel tank fixing device to install and fix the plastic fuel tank.

[0017] The present invention has the following advantages:

[0018] (1) The plastic fuel tank fixing device provided by the present invention has a simple structure and low cost, can conveniently install and fix the plastic fuel tank firmly and reliably, and the fuel tank protection mechanism can also effectively protect the plastic fuel tank, avoiding the fuel tank from being knocked and worn during vehicle operation and ensuring its service life.

[0019] (2) The plastic fuel tank fixing device provided by the present invention is provided with a concave platform on the lower surface of the counterweight. The protective bottom plate is installed on the concave platform. After installation, the protective bottom plate is concave with respect to the lower surface of the counterweight. During the vehicle's travel, it can prevent the protective bottom plate from being knocked, and thus more comprehensively and effectively protect the fuel tank. Moreover, the shape of the lower surface of the protective bottom plate is consistent with the shape of the concave platform, without affecting performance parameters such as the departure angle of the whole machine.

[0020] (3) The plastic fuel tank fixing method provided by the present invention can conveniently and quickly complete the installation and fixation of the plastic fuel tank, which is firm and reliable. Moreover, there is no need to set up assembly mechanisms such as metal frames, with low cost, and it can effectively protect the plastic fuel tank after installation.

[0021] (4) The loader provided by the present invention uses the plastic fuel tank fixing method provided by the present invention to install and fix the fuel tank, which is firm and reliable, and is beneficial to ensuring the service life of the plastic fuel tank. Description of the Drawings

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Shows a schematic diagram of the plastic fuel tank fixing device of the present invention Figure 1 ;

[0024] Figure 2 Shows a schematic diagram of the plastic fuel tank fixing device of the present invention Figure 2 ;

[0025] Figure 3 Shows an exploded schematic diagram of the plastic fuel tank fixing device of the present invention.

[0026] Description of the Reference Numerals:

[0027] 1 - Fuel tank body; 2 - Counterweight, 201 - Concave frame, 202 - Concave platform; 3 - Frame, 301 - Side wall; 4 - Protective bottom plate, 401 - Elastic buffer; 5 - Tie strap; 6 - First fastening nut; 7 - First gasket; 8 - Second fastening bolt; 9 - Second gasket; 10 - Third fastening bolt; 11 - Third gasket. Detailed Embodiments

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] As Figure 1 、 2 shown, it is a preferred embodiment of the plastic fuel tank fixing device of the present invention.

[0033] The plastic fuel tank fixing device of the present invention is used to install a plastic fuel tank at the tail of the frame of an engineering vehicle such as a loader. The plastic fuel tank fixing device includes a fuel tank protection mechanism installed at the bottom of the fuel tank body 1 through a first installation mechanism, a second installation mechanism for installing the fuel tank protection mechanism equipped with the fuel tank body 1 onto the counterweight 2, and a third installation mechanism for installing the counterweight 2 equipped with the fuel tank body 1 and the fuel tank protection mechanism onto the frame 3. In this embodiment, the fuel tank body 1 is an integrally formed fuel tank.

[0034] Among them, the fuel tank protection mechanism is the protection bottom plate 4. In this embodiment, the protection bottom plate 4 is a steel plate made of metal material. The first installation mechanism includes at least two straps 5. In this embodiment, the first installation mechanism includes two straps 5 arranged at intervals, which can make the fuel tank fixed more firmly. The straps 5 can be made of elastic materials such as rubber, or can be made of non-elastic materials such as stainless steel. The straps 5 are arranged around the outer wall of the fuel tank body 1 and its two ends are detachably fixed to the protection bottom plate 4. In this embodiment, the two ends of the straps 5 are connected and fixed to the protection bottom plate 4 through the first fastening nut 6 and the first gasket 7. At the position where the protection bottom plate 4 contacts the bottom of the fuel tank body 1, two elastic buffer members 401 are also provided, which are made of elastic materials such as rubber, and are used to buffer the vehicle bumps and reduce the impact on the fuel tank body 1.

[0035] The lower surface of the counterweight 2 has a concave platform 202, and the protection bottom plate 4 is installed on the concave platform 202. In this embodiment, the depth of the concave platform 202 is relatively deep, so that after the protection bottom plate 4 is installed on the counterweight 2, the protection bottom plate 4 is concave with respect to the lower surface of the counterweight 2, which can effectively prevent the protection bottom plate from being worn and knocked. The shape of the lower surface of the protection bottom plate 4 is the same as the shape of the concave platform 202. Specifically, the stepped surface of the concave platform 202 has two connected parts, one part is a section parallel to the horizontal plane, and the other part is a section bent upward. The angle between these two parts is an obtuse angle, and the lower surface of the protection bottom plate 4 also has two parts matching the stepped surface of the concave platform 202, one part is a section parallel to the horizontal plane, and the other part is a section bent upward. The angle between these two parts is an obtuse angle. The above settings do not affect the performance parameters such as the departure angle of the whole machine and ensure driving safety. The counterweight 2 has a concave frame 201. After assembly, the fuel tank body 1 is placed in the concave frame 201, thereby saving installation space and making the overall structure more compact.

[0036] In this embodiment, both the second installation mechanism and the third installation mechanism are fasteners. Among them, the second installation mechanism includes a second fastening bolt 8 and a second gasket 9. The protection bottom plate 4 equipped with the fuel tank body 1 is installed and fixed to the counterweight 2 through the second fastening bolt 8 and the second gasket 9. The third installation mechanism includes a third fastening bolt 10 and a third gasket 11. The counterweight 2 equipped with the fuel tank body 1 and the protection bottom plate 4 is installed and fixed to the vehicle frame 3 through the third fastening bolt 10 and the third gasket 11.

[0037] The present invention also provides a method for fixing a plastic fuel tank, which uses the above plastic fuel tank fixing device to install and fix the plastic fuel tank. The above method for fixing a plastic fuel tank includes:

[0038] Fix the bottom of the fuel tank body 1 to the fuel tank protection mechanism through the first installation mechanism;

[0039] According to the description of the above plastic fuel tank fixing device, in this embodiment, the fuel tank protection mechanism is the protection bottom plate 4, and the first installation mechanism is two straps 5. The straps 5 are arranged around the outer wall of the fuel tank body 1 and its two ends are fixed to the protection bottom plate 4. Specifically, the two straps 5 are spaced apart and arranged around the outer wall of the fuel tank body 1, and the two ends of the straps 5 are connected and fixed to the protection bottom plate 4 through the first fastening nuts 6 and the first gaskets 7.

[0040] ② Install and fix the fuel tank protection mechanism equipped with the fuel tank body 1 and the counterweight 2 through the second installation mechanism;

[0041] In this embodiment, the lower surface of the counterweight 2 has a concave platform 202, and the protection bottom plate 4 is installed and fixed to the concave platform 202. Specifically, the protection bottom plate 4 equipped with the fuel tank body 1 is installed and fixed to the concave platform 202 of the counterweight 2 through the second fastening bolts 8 and the second gaskets 9. The counterweight 2 has a concave frame 201, and after assembly, the fuel tank body 1 is placed in the concave frame 201.

[0042] ③ Install and fix the counterweight 2 equipped with the fuel tank body 1 and the fuel tank protection mechanism to the vehicle frame 3 through the third installation mechanism.

[0043] Place a part of the side wall 301 of the vehicle frame 3 between the fuel tank body 1 and the concave frame 201, and then install and fix the counterweight 2 to the vehicle frame 3. Specifically, the counterweight 2 equipped with the fuel tank body 1 and the protection bottom plate 4 is installed and fixed to the vehicle frame 3 through the third fastening bolts 10 and the third gaskets 11.

[0044] The present invention also provides a loader, which uses the above plastic fuel tank fixing device to install and fix the plastic fuel tank. Not only is the overall structure of the machine compact and reasonable, but also the installation difficulty of the plastic fuel tank is small, the cost of the fixing device is low, and the plastic fuel tank can be effectively protected.

[0045] In addition to loaders, the plastic fuel tank fixing device of the present invention is also applicable to other construction machinery.

[0046] In other embodiments, the depth of the concave platform 202 on the lower surface of the counterweight 2 can be set shallower. After the protection bottom plate 4 is installed on the counterweight 2, the protection bottom plate 4 can be flush with the lower surface of the counterweight 2 to reduce the processing difficulty of the counterweight. Moreover, in other embodiments, the lower surface of the counterweight 2 may not be provided with a concave platform 202. After the protection bottom plate 4 is installed on the counterweight 2, the protection bottom plate 4 can protrude from the lower surface of the counterweight 2. Without much impact on safety, the processing steps of the counterweight can be saved, and the processing difficulty and manufacturing cost can be further reduced.

[0047] In other embodiments, the protection bottom plate 4 can also be made of non-metallic materials.

[0048] In other embodiments, the number of the straps 5 may also be 3, 4, 5, etc. The multiple straps 5 may be arranged in a spaced-apart, crossed or other manners, as long as the plastic fuel tank and the protection bottom plate can be stably and firmly installed together. The present invention does not limit this.

[0049] In other embodiments, the first installation mechanism may adopt other forms. For example, it may be a connection structure integrally formed on the fuel tank body and the protection bottom plate correspondingly, as long as firm connection can be achieved. The present invention does not limit this.

[0050] In other embodiments, the second installation mechanism and the third installation mechanism may also adopt connection manners such as buckles and clamps, as long as firm connection can be achieved. The present invention does not limit this.

[0051] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. The obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A plastic fuel tank fixing device, characterized in that: It includes a fuel tank protection mechanism installed at the bottom of the fuel tank body (1) through a first installation mechanism, a second installation mechanism for installing the fuel tank protection mechanism equipped with the fuel tank body (1) onto the counterweight (2), and a third installation mechanism for installing the counterweight (2) equipped with the fuel tank body (1) and the fuel tank protection mechanism onto the vehicle frame (3); The lower surface of the counterweight (2) has a concave platform (202), and the fuel tank protection mechanism is installed on the concave platform (202); The stepped surface of the concave platform (202) has two connected parts. One part is a section parallel to the horizontal plane, and the other part is a section bent upward. An obtuse angle is formed between these two parts; The fuel tank protection mechanism is a protection bottom plate (4), and the shape of the lower surface of the protection bottom plate (4) is consistent with the shape of the concave platform (202); Two elastic buffer members (401) are further provided at the position where the protection bottom plate (4) contacts the bottom of the fuel tank body (1); The fixing method of the plastic fuel tank includes: ① Fixing the bottom of the fuel tank body (1) to the fuel tank protection mechanism through the first installation mechanism; ② Fixing the fuel tank protection mechanism equipped with the fuel tank body (1) to the counterweight (2) through the second installation mechanism; ③ Fixing the counterweight (2) equipped with the fuel tank body (1) and the fuel tank protection mechanism to the vehicle frame (3) through the third installation mechanism.

2. The plastic fuel tank fixing device according to claim 1, characterized in that: The counterweight (2) has a concave frame (201), and the fuel tank body (1) is placed in the concave frame (201); 3. The plastic fuel tank fixing device according to claim 2, characterized in that: The first installation mechanism includes at least two straps (5). The straps (5) surround the outer wall of the fuel tank body (1) and its two ends are detachably fixed to the protection bottom plate (4); both the second installation mechanism and the third installation mechanism are fasteners.

4. The plastic fuel tank fixing device according to claim 3, characterized in that: In step ①, the fuel tank protection mechanism is the protection bottom plate (4), and the first installation mechanism is at least two straps (5). The straps (5) are surrounded on the outer wall of the fuel tank body (1) and its two ends are fixed to the protection bottom plate (4).

5. The plastic fuel tank fixing device according to claim 4, characterized in that: In step ②, the lower surface of the counterweight (2) has a concave platform (202), and the protection bottom plate (4) is installed and fixed to the concave platform (202); the counterweight (2) has a concave frame (201), and after assembly, the fuel tank body (1) is placed in the concave frame (201).

6. The plastic fuel tank fixing device according to claim 5, characterized in that: In step ③, a part of the side wall (301) of the vehicle frame (3) is placed between the fuel tank body (1) and the concave frame (201), and then the counterweight (2) is installed and fixed to the vehicle frame (3).

7. A loader, characterized in that: Install and fix the plastic fuel tank using the plastic fuel tank fixing device according to any one of claims 1 - 3 above.

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