Front side mounting structure of methanol fuel tank of excavator

Abstract

The utility model discloses a front mounting structure of a methanol fuel tank of an excavator, which relates to the technical field of excavator accessory mounting and comprises a front plate, an inner vertical plate, an outer vertical plate and a bottom plate, and the bottom plate serves as a bottom supporting surface of the fuel tank and is fixedly arranged at the bottoms of the inner vertical plate and the outer vertical plate; the front side plate is a bent plate, the inner vertical plate and the outer vertical plate are vertically arranged on the two sides of the front side plate respectively, and the front side plate, the inner vertical plate and the outer vertical plate form a three-face enclosure and are fixedly connected with the fuel tank through the bottom plate so that the fuel tank can be installed on an excavator platform from top to bottom. The front side plate, the outer vertical plate, the inner vertical plate and the bottom plate are combined to form the front installation of the fuel tank body, and the fuel tank body is fixedly installed on an excavator platform from top to bottom through bolts, so that the shielding of a rotary platform on the whole machine at the bottom can be avoided, and the installation of a large-volume methanol fuel tank can be conveniently realized; and moreover, the bottom stress of the fuel tank can be effectively reduced, and the mounting stress of the bottom of the fuel tank is ensured to be within the standard of stainless steel materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator hydraulic technology field, concretely relates to a kind of excavator methanol fuel tank front side mounting structure. BACKGROUND

[0002] Diesel excavator power fuel tank plate is mostly carbon steel, pickling phosphorization removes oil dirt and rust and forms dense rustproof layer;But methanol fuel is easy to react with oxygen in air, form weak acid, have corrosion effect to phosphorization layer, therefore cannot use phosphorization treatment as rustproof layer, only use stainless steel after pickling to remove oil dirt as the manufacturing material of methanol fuel tank.Fuel tank is as the power fuel source of excavator, the size of fuel tank is directly related to the continuous working time of excavator, especially super large tonnage mining excavator is more sensitive to fuel sustainable working time.The volume of methanol fuel tank is twice that of diesel fuel tank, to ensure the overall arrangement and transportation requirements of excavator, the size of fuel tank can only be increased in length and height direction to increase volume, resulting in high gravity center, increased force arm of front and rear mounting points, especially in the digging and slewing conditions, fuel is shaken and impacted in fuel tank, causing large stress at the bottom.

[0003] Since the fuel tank plate is changed from carbon steel to stainless steel, the yield strength of the plate is smaller, so the bottom stress standard is more stringent, lower than carbon steel.At the same time, after the lengthening of fuel tank, the front side mounting seat bolt is installed from bottom to top in the conventional installation mode, which is blocked by more than 1 / 2 by the slewing platform on the excavator, and it is difficult to complete the installation normally. UTILITARY MODEL CONTENTS

[0004] In view of the deficiencies existing in the prior art, the utility model provides a kind of excavator methanol fuel tank front side mounting structure, can solve one or more technical problems existing in prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A kind of excavator methanol fuel tank front side mounting structure, including front side plate, inner stand, outer stand and bottom plate, the bottom plate is as the bottom support surface of fuel tank, is fixedly arranged at the bottom of inner stand and outer stand;The front side plate is bent plate, the inner stand and outer stand are vertically arranged on the two sides of front side plate respectively, the front side plate, inner stand and outer stand form three sides, and are fixedly connected with fuel tank by bottom plate, for installing fuel tank from top to bottom on excavator platform.

[0007] As a further implementation, the bottom of the front side plate is fixedly installed on the excavator platform below by bolt connection of the front side mounting structure and the fuel tank as a whole.

[0008] As a further implementation manner, the inner stand plate and the outer stand plate are respectively welded with the front side plate; the bottom plate is arranged at the inner side of the front side plate, and the bottom plate is respectively welded with the inner stand plate and the outer stand plate.

[0009] As a further implementation manner, a through cleaning hole is arranged on the bottom plate, so that the fuel tank after installation can be cleaned.

[0010] As a further implementation manner, a bending plate is arranged at the outer side of the front side plate, and the bottom surface and the outer surface of the bending plate are respectively attached to the front side plate and welded with the front side plate; preferably, the bending part of the front side plate and the bending plate is processed with a round corner.

[0011] As a further implementation manner, a through connecting hole is arranged on the bottom of the bending plate corresponding to the front side plate, and is used for bolt connection; the connecting hole is a long hole.

[0012] As a further implementation manner, a plurality of rib plates are arranged at the bending inner side of the bending plate, the plurality of rib plates are uniformly arranged along the length direction of the bending plate, and the structural strength is improved; the bottom surface and the side surface of the rib plate are respectively welded with the bending plate.

[0013] As a further implementation manner, a round corner is arranged at the middle part of the rib plate, so that the local stress of the front side plate and the bending plate can be reduced, and the stability of the front side mounting structure can be improved.

[0014] As a further implementation manner, a backing plate is arranged at the bottom front side of the bottom plate, the top surface of the backing plate is attached to the bottom plate and welded with the bottom plate; a bevel is arranged at the bottom periphery of the side of the backing plate close to the front side plate, and is used for welding connection with the bottom of the front side plate.

[0015] As a further implementation manner, a lining plate is arranged below the front side plate and the backing plate, and the top surface of the lining plate is respectively welded with the front side plate and the backing plate; the lining plate is used as a contact plane with the platform of the excavator, so that the contact area can be increased, and the bottom stress of the fuel tank can be reduced; a mounting hole is arranged on the lining plate corresponding to the connecting hole, and is used for bolt fixing of the front side mounting structure on the platform of the excavator.

[0016] As a further implementation manner, a U-shaped rib plate is fixedly arranged at the inner side of the backing plate, the U-shaped rib plate extends along the length direction of the fuel tank, one end of the U-shaped rib plate is welded with the backing plate, and the other end is fixedly connected with the rear side mounting structure of the fuel tank.

[0017] As a further implementation manner, the U-shaped opening of the U-shaped rib plate is upwardly welded with the bottom plate, so that the bottom plate and the front and rear side mounting structures are connected; the U-shaped rib plate is provided with a welding seam avoiding chamfer.

[0018] By adopting the above technical scheme, the beneficial effects of the present application are as follows:

[0019] 1. The utility model discloses a front side plate, outer vertical board, inner vertical board and bottom plate combination constitute fuel tank body front installation, and through bolt from top to bottom fixed mounting on the excavator platform, can avoid the shelter of the rotary platform on the whole machine bottom, conveniently realize the installation of large volume methanol fuel tank.

[0020] 2. The utility model discloses a plurality of layers of gasket plate structure is formed through gasket, lining and U type gusset plate at fuel tank bottom, can effectively reduce fuel tank bottom stress, ensure that the installation stress of fuel tank bottom does not exceed the stress range of stainless steel material, is favorable for prolonging the service life of methanol fuel tank, improves the running stability of excavator. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings constituting a part of the specification of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0022] Figure 1 It is the installation schematic drawing of the utility model embodiment;

[0023] Figure 2 It is the overall structural drawing of the utility model embodiment;

[0024] Figure 3 It is the front schematic drawing of the utility model embodiment;

[0025] Figure 4 It is the bottom surface schematic drawing of the utility model embodiment;

[0026] Figure 5 It is the lateral sectional view of the utility model embodiment;

[0027] Figure 6 It is the plan view of the utility model embodiment.

[0028] In the drawing: 01, front side installation structure;02, excavator platform;

[0029] 1, front side plate;2, bending plate;3, gasket;4, lining;5, gusset plate;6, outer vertical board;7, bottom plate;8, inner vertical board;9, first U type gusset plate;10, second U type gusset plate;11, connecting hole;12, mounting hole;13, cleaning hole. DETAILED DESCRIPTION

[0030] It should be pointed out that the following detailed description is all exemplary, and aims at providing further explanation to the utility model. Unless otherwise indicated, all the technology and scientific terms used in the utility model have the same meaning as that understood by the ordinary skilled person in the technical field to which the utility model belongs.

[0031] It should be noted that the terminology used herein is for descriptive purposes only and is not intended to limit the exemplary embodiments according to this invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0032] Example 1

[0033] In one typical embodiment of this application, a front mounting structure for a methanol fuel tank on an excavator is provided, such as... Figures 1-6 As shown, it includes a front side plate 1, an inner vertical plate 8, an outer vertical plate 6, and a bottom plate 7. The bottom plate 7 serves as the bottom support surface of the fuel tank and is fixedly installed at the bottom of the inner vertical plate 8 and the outer vertical plate 6. The front side plate 1 is a bent structural plate. The inner vertical plate 8 and the outer vertical plate 6 are respectively vertically installed on both sides of the front side plate 1. The front side plate 1, the inner vertical plate 8, and the outer vertical plate 6 form a three-sided enclosure and are fixedly connected to the fuel tank through the bottom plate 7, which is used to install the fuel tank on the excavator platform 02 from top to bottom.

[0034] Specifically, such as Figures 3-4 As shown, the methanol fuel tank front mounting structure of this embodiment consists of a front side plate 1, an outer vertical plate 6, a bottom plate 7, and an inner vertical plate 8. The front side plate 1 is a bent structural plate distributed at the bottom and sides. The bottom plate 7 is located on the inner side of the front side plate 1, serving as the bottom support surface of the fuel tank and horizontally fixed below the bottom of the inner vertical plate 8 and the outer vertical plate 6. Combined with... Figures 1-2 As shown, the side of the front panel 1 and the inner vertical panel 8 and outer vertical panel 6 at both ends form a three-sided enclosure structure, which can enclose and fix the fuel tank inside. The bottom of the front panel 1 is connected by bolts to fix the front mounting structure 01 and the fuel tank to the excavator platform 02 below, avoiding the obstruction of the slewing platform at the bottom. This can effectively improve the installation efficiency of the large methanol fuel tank, especially for super-large excavators.

[0035] The outer panel 6 serves as the outer facade of the fuel tank, and the inner panel 8 serves as the inner facade, defining and restricting the installation position of the fuel tank. In this embodiment, bevels are provided on the mating surfaces of the front panel 1 with the outer panel 8 and the inner panel 6, facilitating welding and fixing of the inner panel 8 and the outer panel 6 to the front panel 1. Figures 2-4As shown, the bottom plate 7 is welded and fixed with the front side plate 1, the inner vertical plate 8 and the outer vertical plate 6 respectively, and a groove is formed on the joint surface between the bottom plate 7 and the front side plate 1 and the outer vertical plate 6, and a groove is formed on the joint surface between the inner vertical plate 8 and the bottom plate 7, so as to ensure the smooth welding.

[0036] It should be noted that, since the methanol fuel is easy to react with oxygen in the air to form a weak acid, which has a corrosive effect on the phosphating layer, the phosphating treatment cannot be used as a rust-proof layer, and the plate material used for the fuel tank of the methanol mining excavator is stainless steel material, that is, the plate material used in the embodiment is stainless steel material.

[0037] As shown in Figure 4 , two through cleaning holes 13 are formed on the bottom plate 7, which facilitates cleaning of the installed fuel tank.

[0038] Specifically, as shown in Figure 2 , Figure 3 , the bent plate 2 is fixedly installed on the outer side of the front side plate 1, and the bottom surface and the outer side surface of the bent plate 2 are respectively attached to and welded to the two surfaces of the front side plate 1, wherein the bent portions of the front side plate 1 and the bent plate 2 are both rounded, which can reduce stress concentration. In the embodiment, a through connecting hole 11 is formed on the bottom of the bent plate 2 corresponding to the front side plate 1, which is used for bolt connection to fix the front side mounting structure on the excavator platform. In the embodiment, the connecting hole 11 is a long slot, which can reduce the influence of the bending error of the front side plate and the bent plate, and can also avoid the influence of the welding deformation error between the front side plate, the bent plate and the lining plate, thereby ensuring the accuracy of the installation distance.

[0039] Specifically, as shown in Figure 2 , Figure 3 and Figure 6 , a plurality of rib plates 5 are fixedly arranged on the inner side of the bent portion of the bent plate 2, which are uniformly arranged at the same interval along the length direction of the bent plate 2, and are used for improving the supporting strength of the mounting structure. The bottom surface and the side surface of each rib plate 5 are respectively welded and fixed to the bent plate 2. As shown in Figure 2 , the rib plate 5 is provided with a rounded corner in the middle, which can reduce the local stress of the front side plate and the bent plate, and improve the stability of the front side mounting structure.

[0040] Specifically, as shown in Figures 3-5 , a backing plate 3 is fixedly arranged below the bottom of the front side of the bottom plate 7, and the top surface of the backing plate 3 is attached to and welded to the bottom plate 7. In the embodiment, the backing plate 3 is a thick plate, and a groove is formed on the side near the bottom of the front side plate 1, which is used for welding connection with the bottom of the front side plate 1.

[0041] As shown in Figure 2 , the lining plate 4 is installed below the front side plate 1 and the backing plate 3, and the top surface of the lining plate 4 is welded to the front side plate 2 and the backing plate 3 respectively. As shown in Figure 4As shown in the drawings, the gusset plate 3 is provided with a mounting hole 12 coaxially corresponding to the connecting hole 11, for fixing the front mounting structure 01 on the excavator platform 02 by bolts. Before welding the gusset plate, the welds of the front plate and the gusset plate are polished to reduce the tolerance of the machining surface of the front plate and the gusset plate, and ensure the flatness of the bottom. The gusset plate 4 serves as a direct contact plane with the excavator platform, and plays a role in increasing the contact area and reducing the stress on the bottom of the fuel tank.

[0042] As shown in the drawings, Figures 2-4 The gusset plate 4 is fixedly provided with two parallel U-shaped rib plates, namely a first U-shaped rib plate 9 and a second U-shaped rib plate 10, which extend along the length direction of the fuel tank. One end of the U-shaped rib plate is welded to the gusset plate, and the other end is fixedly connected to the rear mounting structure of the fuel tank. Figure 2 、 Figure 3 and Figure 5 As shown in the drawings, the U-shaped opening of the U-shaped rib plate is upward, provided with a weld-avoiding chamfer, and the top is welded to the bottom plate, thereby connecting the bottom plate and the front and rear mounting structures.

[0043] In this embodiment, the bottom plate 7 cooperates with the gusset plate 3, the gusset plate 4 and the U-shaped rib plate below to form a multi-layer gusset plate structure of the fuel tank mounting bottom, which can effectively reduce the stress and avoid the impact of fuel shaking in the tank from exceeding the stress range of the stainless steel fuel tank in the excavating and rotating conditions of the excavator, thereby ensuring the service life and stability of the methanol fuel tank.

[0044] In this embodiment, by reasonably designing the size of the bent plate, the gusset plate and the gusset plate, the front mounting structure and the mounting structure on the rear side of the fuel tank are ensured to be at the same height, thereby facilitating positioning on the excavator platform and ensuring the dimensional accuracy during installation.

[0045] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A front mounting structure for a methanol fuel tank on an excavator, characterized in that, It includes a front side plate, an inner vertical plate, an outer vertical plate, and a bottom plate. The bottom plate serves as the bottom support surface of the fuel tank and is fixedly installed at the bottom of the inner and outer vertical plates. The front side plate is a bent plate, and the inner and outer vertical plates are respectively vertically installed on both sides of the front side plate. The front side plate, inner vertical plate, and outer vertical plate form a three-sided enclosure and are fixedly connected to the fuel tank through the bottom plate, which is used to install the fuel tank on the excavator platform from top to bottom.

2. The front mounting structure for a methanol fuel tank on an excavator as described in claim 1, characterized in that, The front side plate is bolted to the bottom to secure the front mounting structure and fuel tank to the excavator platform below.

3. The front mounting structure for a methanol fuel tank on an excavator as described in claim 1, characterized in that, The inner and outer vertical panels are welded to the front panel respectively; the bottom plate is located inside the front panel and is welded to and fixed to the inner and outer vertical panels respectively.

4. The front mounting structure for a methanol fuel tank on an excavator as described in claim 1, characterized in that, The base plate has a through cleaning hole.

5. The front mounting structure for a methanol fuel tank on an excavator as described in claim 2, characterized in that, A bent plate is fixedly provided on the outer side of the front side plate. The bottom surface and outer side surface of the bent plate are respectively attached to and welded to the front side plate. The bottom of the bent plate and the front side plate are respectively provided with through holes for bolt connection.

6. The front mounting structure for a methanol fuel tank on an excavator as described in claim 5, characterized in that, The inner side of the bent plate is provided with several stiffening plates, which are evenly arranged along the length of the bent plate; the bottom and side surfaces of the stiffening plates are welded and fixed to the bent plate respectively; the middle of the stiffening plates is provided with rounded corners.

7. The front mounting structure for a methanol fuel tank on an excavator as described in claim 3, characterized in that, A pad is fixedly provided on the bottom front side of the base plate. The top surface of the pad is attached to the base plate and welded to it. A bevel is opened around the bottom of the side of the pad near the front side plate for welding connection with the bottom of the front side plate.

8. The front mounting structure for a methanol fuel tank on an excavator as described in claim 7, characterized in that, A liner is provided below the front side plate and the pad, and the top surface of the liner is welded to the front side plate and the pad, respectively.

9. The front mounting structure for a methanol fuel tank on an excavator as described in claim 7, characterized in that, A U-shaped stiffener is fixedly installed on the inner side of the pad. The U-shaped stiffener extends along the length of the fuel tank. One end of the U-shaped stiffener is welded to the pad, and the other end is fixedly connected to the rear mounting structure of the fuel tank.

10. The front mounting structure for a methanol fuel tank on an excavator as described in claim 9, characterized in that, The U-shaped opening of the U-shaped stiffener is welded to the bottom plate with the U-shaped opening facing upward, thereby connecting the bottom plate and the front and rear mounting structures.

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