Fuel tank for super-tonnage methanol excavator

Abstract

The utility model provides a fuel tank for a super-tonnage methanol excavator, which relates to the technical field of excavator equipment and comprises a tank body formed by welding stainless steel plates, and the tank body comprises an outer vertical plate, a rear side plate, a surrounding plate, a top plate, a front side plate and a bottom plate; a vertical reinforcing rib perpendicular to the bottom plate, a first concentric-square-shaped reinforcing rib, a second concentric-square-shaped reinforcing rib, a third concentric-square-shaped reinforcing rib and a fourth concentric-square-shaped reinforcing rib are arranged in the box body, and the concentric-square-shaped reinforcing ribs and the vertical reinforcing rib are welded in a crossed mode to form a net-shaped supporting structure. According to the methanol fuel tank, through the structural design of the composite reinforcing ribs and three-face installation, the strength and the stability of the fuel tank are improved, meanwhile, the installation convenience and the maintenance efficiency are both considered, and the requirements for high strength, long endurance and environmental protection of a super-tonnage mining excavator for the methanol fuel tank are met.

Description

Technical Field

[0001] This utility model relates to the field of excavator equipment technology, and in particular to a fuel tank for an ultra-large tonnage methanol excavator. Background Technology

[0002] The statements in this section are merely background information relating to this disclosure and do not necessarily constitute prior art.

[0003] Diesel excavator fuel tank plates are mostly made of carbon steel, which is pickled and phosphated to remove oil and rust and form a dense anti-corrosion layer; however, methanol fuel is prone to react with oxygen in the air to form a weak acid, which has a corrosive effect on the phosphated layer, so phosphated cannot be used as an anti-corrosion treatment; based on the experience of commercial vehicles, stainless steel that has been pickled to remove oil is generally used as the material for methanol fuel tanks.

[0004] As the power source for excavators, the size of the fuel tank directly affects the continuous working time of the excavator. This is especially true for ultra-large tonnage mining excavators, which are more sensitive to the continuous working time of fuel. Under the same working time requirements, the volume of a methanol fuel tank is twice that of a diesel fuel tank. As the volume increases, the tank structure becomes weaker. In order to ensure the overall layout and transportation requirements of the excavator, the fuel tank can only increase its volume by increasing the length and height dimensions. Due to the frequent digging and turning operations, the methanol shakes and impacts a lot inside the fuel tank, which requires high structural strength of the fuel tank.

[0005] The inventors discovered that increasing the length and height of the fuel tank rendered the internal stiffening plate structure inadequate to meet the impact requirements of methanol sloshing; increasing the length and height of the fuel tank increased the span of the mounting points, leading to greater stress on the bottom mounting points; after lengthening the fuel tank, the front of the mounting points was blocked by the rotating platform, forcing installation only from the top; increasing the height of the fuel tank shifted the center of gravity upwards, increasing the lever arm and thus the stress on the bottom during rotation; and changing the fuel tank plate from carbon steel to stainless steel reduced the yield strength of the plate. Utility Model Content

[0006] Based on the above requirements, this utility model provides a fuel tank for an ultra-large tonnage methanol excavator, optimizes the internal stiffener structure of the fuel tank, optimizes the bottom mounting base, and adds a third side mounting point. The fuel tank is a box body welded from stainless steel plates, and the box body includes: an outer upright plate (1), a rear side plate (2), a surrounding plate (3), a top plate (4), a front side plate (5), and a bottom plate (6).

[0007] The box body is provided with vertical reinforcing ribs (28) perpendicular to the bottom plate (6) and circular reinforcing ribs distributed parallel to the bottom plate (6); the circular reinforcing ribs include a first circular reinforcing rib (29), a second circular reinforcing rib (30), a third circular reinforcing rib (31) and a fourth circular reinforcing rib (32); the circular reinforcing ribs and the vertical reinforcing ribs (28) are cross-welded to form a mesh support structure.

[0008] Furthermore, a gap is provided between the upper end of the vertical reinforcing rib (28) and the top plate (4), and the height of the gap is 20-30mm.

[0009] Furthermore, the box body is also provided with a first mounting seat, which is formed by welding a first mounting plate (8) and a first liner (7); the box body is also provided with a second mounting seat, which is formed by welding a front side plate (5), a second mounting plate (10) and a bending plate (11), and a second liner (9) and a reinforcing rib (12) are provided between the second mounting plate (10) and the bending plate (11).

[0010] Furthermore, the housing is also provided with a third mounting base, which is composed of a third mounting plate (14) and a pad (13) welded together.

[0011] Furthermore, a flange (17) is welded onto the base plate (6). The flange (17) has an O-ring groove, an O-ring is embedded in the O-ring groove, and the flange (17) is provided with an alcohol inlet (18), a heater interface (19), and a water outlet (20).

[0012] Furthermore, the rear side plate (2) is provided with a return port (21), and a baffle (36) is welded to the inner side of the return port. The plane of the baffle (36) is perpendicular to the axis of the return port (21).

[0013] Furthermore, the housing also includes a level gauge protection device, which includes: a level gauge mounting base (27), a level gauge protective sleeve (33), and a protective sleeve mounting base (34); the level gauge mounting base (27) is welded to the top plate (4) and coaxially fixed with the vertical reinforcing rib (28); the protective sleeve mounting base (34) is welded to the bottom plate (6), and the bottom of the level gauge protective sleeve (33) is welded to the protective sleeve mounting base (34).

[0014] Furthermore, the first mounting plate (8) is provided with threaded holes; the second mounting plate (10) is provided with through holes.

[0015] Furthermore, the base plate (6) is welded and fixed to the first U-shaped bending plate (15) and the second U-shaped bending plate (16).

[0016] Furthermore, the top plate (4) is welded with an oil filler (24), a lifting lug (25) and an observation window mounting base, and the axis of the oil filler (24) is perpendicular to the plane of the top plate (4).

[0017] Compared with the prior art, the fuel tank for ultra-large tonnage methanol excavators provided by this utility model has the following beneficial effects:

[0018] (1) Vertical reinforcing ribs are perpendicular to the bottom plate, and U-shaped reinforcing ribs are distributed along the length direction. The two are welded together to form a mesh support structure, which significantly improves the deformation resistance of the box body when the methanol shakes violently. The bottom front and rear mounting seats and the third mounting seat on the side form a triangular support, which disperses the stress at the bottom mounting point and reduces the risk of excessive local stress when the excavator is rotating.

[0019] (2) The level gauge mounting base is coaxially fixed with the internal reinforcing ribs, and an external protective plate is welded to prevent the level gauge from failing due to the impact of oil sloshing. A baffle is welded to the inner side of the rear plate, and its plane is perpendicular to the axis of the alcohol return port to prevent the alcohol return from stirring up impurities at the bottom and allowing the impurities to flow into the alcohol inlet. The flange on the base plate integrates the alcohol inlet, heater interface and drain port, and quick disassembly and sealing are achieved through O-ring grooves and sealing rings, which facilitates daily maintenance.

[0020] (3) The top plate is welded with lifting lugs and observation window mounting bases to facilitate fuel tank hoisting and status monitoring, and improve operational convenience. Attached Figure Description

[0021] The accompanying drawings, which form part of this disclosure, are used to provide a further understanding of this disclosure. The illustrative embodiments of this disclosure and their descriptions are used to explain this disclosure and do not constitute an undue limitation of this disclosure.

[0022] Figure 1 The three-dimensional super-large excavator fuel tank provided by this utility model Figure 1 ;

[0023] Figure 2 The three-dimensional super-large excavator fuel tank provided by this utility model Figure 2 ;

[0024] Figure 3 Perspective view of the extra-large excavator fuel tank provided by this utility model;

[0025] Figure 4 A top view of the concealed outer panel of the extra-large excavator fuel tank provided by this utility model. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] like Figure 1 and Figure 2 This utility model provides a fuel tank for an ultra-large tonnage methanol excavator. The fuel tank is made of stainless steel sheet welded together. The stainless steel material replaces the traditional carbon steel, avoiding the corrosion of the carbon steel fuel tank's phosphate layer by the weak acid produced by the reaction of methanol with oxygen in the air, and ensuring the cleanliness requirements of the engine's methanol intake.

[0028] The box body includes: outer upright panel (1), rear side panel (2), side panel (3), top panel (4), front side panel (5) and bottom panel (6); that is, the box body is composed of six stainless steel plates, of which the outer upright panel (1) serves as the exterior surface of the vehicle, the side panel (3) is opposite to the outer upright panel (1), the rear side panel (2) is opposite to the front side panel (5), and the top panel (4) is opposite to the bottom panel (6);

[0029] The box body is provided with vertical reinforcing ribs (28) perpendicular to the bottom plate (6) and circular reinforcing ribs distributed parallel to the bottom plate (6); the circular reinforcing ribs include a first circular reinforcing rib (29), a second circular reinforcing rib (30), a third circular reinforcing rib (31) and a fourth circular reinforcing rib (32); the circular reinforcing ribs and the vertical reinforcing ribs (28) are cross-welded to form a mesh support structure.

[0030] Vertical reinforcing ribs (28) are perpendicular to the base plate (6), and U-shaped reinforcing ribs (29-32) are distributed along the length direction. The two are welded together to form a mesh support structure, which improves the stability of the overall structure of the fuel tank and meets the strength requirements of the fuel tank. When the excavator is operating, this structure reduces the risk of tank deformation by dispersing the sloshing impact force of methanol liquid, and ensures the overall strength of the tank under ultra-large volume.

[0031] The upper end of the vertical reinforcing rib (28) is provided with a gap between it and the top plate (4) to prevent knocking sounds when the top plate (4) deforms. The height of the gap is 20-30mm.

[0032] like Figure 2 On the lower side of the machine, the housing is also provided with a first mounting base, which is formed by welding a first mounting plate (8) and a first liner plate (7); Figure 1 At the front of the machine, the housing is also provided with a second mounting seat. The second mounting seat is formed by welding a front side plate (5), a second mounting plate (10), and a bent plate (11). A second liner (9) and a reinforcing rib (12) are provided between the second mounting plate (10) and the bent plate (11) to reduce the stress on the front second mounting seat. The front mounting seat has a through hole, and the bolts are lowered from top to bottom to fix the fuel tank to the excavator platform, avoiding obstruction by the slewing platform at the bottom.

[0033] like Figure 1Inside the machine, the housing is also provided with a third mounting seat, which is composed of a third mounting plate (14) and a pad (13) welded together. When the excavator rotates, it serves as an auxiliary support to reduce the stress on the base. The third (inside the machine) mounting seat, composed of the third mounting plate (14) and the pad (13), forms a three-sided mounting with the bottom mounting seat (the first mounting seat on the lower side of the machine and the second mounting seat facing forward of the machine). When the excavator rotates or digs, the stress is distributed at multiple points, reducing the concentrated stress at the bottom mounting point and preventing local structural cracking.

[0034] A flange (17) is welded onto the base plate (6). The flange (17) has an O-ring groove with an O-ring seal embedded in it. The flange (17) is also equipped with an alcohol inlet (18), a heater interface (19), and a drain outlet (20). The flange (17) on the base plate (6) achieves interface sealing through the O-ring groove and the seal to prevent methanol leakage. It also integrates the functions of the alcohol inlet (18) and the heater interface (19), facilitating quick disassembly and assembly during maintenance.

[0035] The rear side plate (2) is provided with a return port (21), and a baffle (36) is welded to the inner side of the return port. The plane of the baffle (36) is perpendicular to the axis of the return port (21). The return port baffle (36) is located directly opposite the return port (21) to prevent the return of alcohol from stirring up impurities at the bottom. Impurities flow into the alcohol inlet, ensuring the cleanliness of the fuel supply.

[0036] like Figure 3 and Figure 4 The housing also includes a level gauge protection device, which includes: a level gauge mounting base (27), a level gauge sleeve (33), and a sleeve mounting base (34); the level gauge mounting base (27) is welded to the top plate (4) and coaxially fixed with the vertical reinforcing rib (28); the sleeve mounting base (34) is welded to the bottom plate (6), and the bottom of the level gauge sleeve (33) is welded to the sleeve mounting base (34);

[0037] The level gauge is installed in the level gauge casing (33) to prevent the oil from sloshing and impacting the level gauge during rotation. Since the level gauge casing (33) does not contact the top plate (4), the level gauge casing (33) and the level gauge mounting base (27) are coaxial but do not contact each other.

[0038] The first mounting plate (8) has threaded holes; the second mounting plate (10) has through holes.

[0039] The base plate (6) is welded and fixed to the first U-shaped bending plate (15) and the second U-shaped bending plate (16). The base plate (6) is welded to the front and rear mounting seats through U-shaped bending plates to form an overall frame structure, which enhances the bottom impact resistance and simplifies the installation process.

[0040] like Figure 1 The top plate (4) is welded with a fuel filler port (24), a lifting lug (25), and an observation window mounting base. The axis of the fuel filler port (24) is perpendicular to the plane of the top plate (4). The lifting lug of the top plate (4) facilitates the lifting and transportation of the fuel tank; the observation window mounting base supports visual monitoring of the methanol status inside the tank, improving the ease of operation.

[0041] The fuel tank is also equipped with a filter mount (22), a side support mount (23), and a lamp mount (26) that provide a mounting position for the filter.

[0042] The working principle of this utility model is as follows:

[0043] Methanol fuel enters the fuel tank through the inlet. During excavator operation, the methanol liquid sloshes within the tank. The mesh support structure formed by the vertical and spiral reinforcing ribs effectively disperses the impact of this sloshing, ensuring the overall strength of the tank. The methanol level can be clearly viewed through the observation window, ensuring timely fuel supply. After the methanol is used up, residual liquid can be drained through the drain port for easy cleaning and maintenance. Furthermore, the filter mounting bracket provides a stable installation position for the filter, ensuring a clean supply of methanol fuel. The side support mounting bracket and lamp mounting bracket enhance the lateral support and lighting functions of the tank, respectively, improving the overall operating efficiency and safety of the excavator.

[0044] In the description of this specification, the terms "connection", "installation", "fixing", "setting", etc. are interpreted in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. In such cases, those skilled in the art can understand the specific meaning of the above terms in this utility model or utility model according to the specific circumstances.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fuel tank for an ultra-large tonnage methanol excavator, comprising a tank body welded from stainless steel plates, characterized in that, The enclosure includes: an outer panel (1), a rear panel (2), a surrounding panel (3), a top panel (4), a front panel (5), and a bottom panel (6). The box body is provided with vertical reinforcing ribs (28) perpendicular to the bottom plate (6) and circular reinforcing ribs distributed parallel to the bottom plate (6); the circular reinforcing ribs include a first circular reinforcing rib (29), a second circular reinforcing rib (30), a third circular reinforcing rib (31) and a fourth circular reinforcing rib (32); the circular reinforcing ribs and the vertical reinforcing ribs (28) are cross-welded to form a mesh support structure.

2. The fuel tank for ultra-large tonnage methanol excavators as described in claim 1, characterized in that, A gap is provided between the upper end of the vertical reinforcing rib (28) and the top plate (4), and the height of the gap is 20-30mm.

3. The fuel tank for ultra-large tonnage methanol excavators as described in claim 1, characterized in that, The box body is also provided with a first mounting seat, which is formed by welding a first mounting plate (8) and a first liner (7); the box body is also provided with a second mounting seat, which is formed by welding a front side plate (5), a second mounting plate (10) and a bending plate (11), and a second liner (9) and a reinforcing rib (12) are provided between the second mounting plate (10) and the bending plate (11).

4. The fuel tank for ultra-large tonnage methanol excavators as described in claim 1, characterized in that, The housing is also provided with a third mounting base, which is composed of a third mounting plate (14) and a pad (13) welded together.

5. The fuel tank for ultra-large tonnage methanol excavators as described in claim 1, characterized in that, A flange (17) is welded onto the base plate (6). The flange (17) has an O-ring groove, an O-ring is embedded in the O-ring groove, and the flange (17) is provided with an alcohol inlet (18), a heater interface (19) and a water outlet (20).

6. The fuel tank for ultra-large tonnage methanol excavators as described in claim 1, characterized in that, The rear side plate (2) is provided with a return port (21), and a baffle (36) is welded to the inner side of the return port. The plane of the baffle (36) is perpendicular to the axis of the return port (21).

7. The fuel tank for ultra-large tonnage methanol excavators as described in claim 1, characterized in that, The housing also includes a level gauge protection device, which includes: a level gauge mounting base (27), a level gauge sleeve (33), and a sleeve mounting base (34); the level gauge mounting base (27) is welded to the top plate (4) and coaxially fixed with the vertical reinforcing rib (28); the sleeve mounting base (34) is welded to the bottom plate (6), and the bottom of the level gauge sleeve (33) is welded to the sleeve mounting base (34).

8. The fuel tank for ultra-large tonnage methanol excavators as described in claim 3, characterized in that, The first mounting plate (8) has threaded holes; the second mounting plate (10) has through holes.

9. The fuel tank for ultra-large tonnage methanol excavators as described in claim 8, characterized in that, The base plate (6) is welded and fixed to the first U-shaped bending plate (15) and the second U-shaped bending plate (16).

10. The fuel tank for ultra-large tonnage methanol excavators as described in claim 1, characterized in that, The top plate (4) is welded with an oil filler (24), a lifting lug (25) and an observation window mounting base. The axis of the oil filler (24) is perpendicular to the plane of the top plate (4).

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