Multifunctional oil tank and loader-digger
By designing a multi-functional fuel tank, the excavator loader's fuel tank is divided into multiple parts and equipped with a protective structure, solving the problem of limited installation of the negative switch and improving protection performance and maintenance convenience.
Patent Information
- Application Number
- CN202520811707.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-04-27
AI Technical Summary
The installation location of the negative switch on the excavator loader is limited, resulting in poor waterproofing, dustproofing, and protection, and making maintenance difficult.
Design a multi-functional fuel tank that divides the tank into a fuel tank, a battery tank, and a negative switch tank, and is equipped with a cover plate, pedal assembly, and other structures to protect the negative switch. Stamped parts are used to improve precision and reduce costs.
The design achieves a reasonable arrangement of the negative switch, improves waterproof, dustproof, and impact-resistant performance, simplifies the maintenance process, and reduces the difficulty of installation and replacement.
Smart Images

Figure CN223999335U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a multi-functional fuel tank and an excavator loader, belonging to the field of engineering machinery technology. Background Technology
[0002] With the development of technology, excavators and loaders are becoming more and more functional and their configurations are being upgraded at a faster pace. Each vehicle is equipped with a negative switch. However, due to structural and space limitations, the installation location of the negative switch is limited, and it is sometimes installed haphazardly, exposed in places that are visible to the naked eye. Its waterproof, dustproof, protective, and collision-resistant effects are extremely poor, making maintenance and replacement difficult. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a multi-functional fuel tank and excavator loader.
[0004] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution:
[0005] First aspect: A multi-functional fuel tank, comprising:
[0006] The enclosure is divided into an oil tank, a battery tank, and a negative switch box by a partition and a negative switch mounting plate. The battery tank is used to install batteries, and the negative switch box is used to install negative switches.
[0007] The negative switch box is equipped with a cover plate assembly for protecting the negative switch; the top of the oil tank is equipped with a filler port and a return oil filter element mounting cover plate, the filler port is equipped with a filler filter, and the side of the box away from the negative switch is equipped with an oil suction port and an oil return port.
[0008] Optionally, a pedal assembly is provided in the recessed area on the outside of the housing.
[0009] Optionally, one end of the pedal assembly is fixed to a mounting block welded to the outer wall of the recess by bolts, and the other end is fixed to a through hole in the housing flange by bolts and nuts.
[0010] Optionally, the battery is fixed in the battery box by a pressure plate and a double-ended stud. One end of the double-ended stud is screwed onto a fixing block located on the bottom of the battery box, and the other end is fastened to the pressure plate by a nut.
[0011] Optionally, the battery box has a battery inspection port on its upper side, the battery inspection port has a battery front sealing plate, the battery box has a battery installation port, the battery installation port has a battery cover plate, the battery cover plate is connected to the battery box by bolts, and a rubber gasket is provided between the battery cover plate and the battery installation port.
[0012] Optionally, a rubber pad is provided between the front cover of the battery and the battery access port.
[0013] Optionally, the bottom of the oil tank is provided with a cleaning flange cover and an oil drain port.
[0014] Optionally, the side of the housing away from the negative switch is also provided with an oil temperature monitoring port.
[0015] Optionally, the cover assembly is fixed to the bends on the upper and front sides of the housing by a hinge, a cover plate, and a nut. The cover plate is provided with a lock for connecting the cover plate to the housing.
[0016] Second aspect: A backhoe loader, including the multi-functional fuel tank described in the first aspect, wherein the multi-functional fuel tank is mounted on the frame of the backhoe loader via a welded assembly. Compared with the prior art, the beneficial effects achieved by this utility model are:
[0017] This utility model features a multi-functional fuel tank with negative switch protection, allowing for better arrangement and utilization of the negative switch. It solves problems such as insufficient installation space and difficult placement within excavators and loaders. Without affecting assembly, it provides waterproof, dustproof, protective, and collision-resistant functions, while also simplifying maintenance and replacement. Furthermore, the multi-functional fuel tank pedal assembly is made of stamped parts, which offer higher precision, smaller errors, lower cost, and higher efficiency compared to the original welded parts. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the box welding assembly structure of this utility model;
[0019] Figure 2 This is an exploded view of the multifunctional fuel tank structure of this utility model;
[0020] Figure 3 This is a schematic diagram illustrating the application of the multifunctional fuel tank of this utility model;
[0021] Figure 4 This is a rear view of the multifunctional fuel tank of this utility model;
[0022] Figure 5 This is a bottom view of the multifunctional fuel tank of this utility model;
[0023] Figure 6 This is a side view of the multi-functional fuel tank of this utility model installed on an excavator loader.
[0024] In the diagram: 1-Fuel tank, 2-Battery box, 3-Negative switch box, 4-Baffle, 5-Negative switch mounting plate, 6-Battery cover, 7-Rubber gasket one, 8-Cover assembly, 9-Battery front seal, 10-Rubber gasket two, 11-Fuel filter, 12-Return oil filter mounting cover, 13-Pedal assembly, 14-Battery, 15-Negative switch, 16-Fuel suction port, 17-Return oil port, 18-Temperature monitoring port, 19-Cleaning flange cover, 20-Drain port, 21-Lock, 22-Pressure plate, 23-Double-ended stud, 24-Box welding assembly, 25-Frame. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.
[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Example
[0027] like Figures 1-5 As shown, a multi-functional fuel tank includes a tank body, a partition 4, a negative switch mounting plate 5, a cover assembly 8, a pedal assembly 13, a fuel filter 11, a cleaning flange cover 19, a return oil filter element mounting cover 12, a battery cover 6, a battery front seal 9, and a lock 21.
[0028] The partition 4 and the negative switch mounting plate 5 divide the box into the oil tank 1, the battery box 2 and the negative switch box 3; the cover assembly 8 is installed at the bend on the upper and front sides of the box; the pedal assembly 13 is installed in the recess on the outside of the box.
[0029] The battery box 2 is used to install the battery 14, the negative switch box 3 is used to install the negative switch 15, and the oil tank 1 is used to add oil.
[0030] The negative switch box 3 is provided with a cover plate assembly 8 for protecting the negative switch 15. The top of the oil tank 1 is provided with a filler port and a return oil filter replacement port. The return oil filter replacement port is provided with a return oil filter installation cover plate 12. The filler port is provided with a filler filter 11. The side of the box away from the negative switch is provided with an oil suction port 16, an oil return port 17 and a temperature monitoring port 18. The bottom side of the box is provided with a cleaning flange port and an oil drain port 20.
[0031] In this embodiment, one end of the pedal assembly 13 is fixed to the mounting block welded to the outer wall of the recess by bolts, and the other end is fixed to the through hole of the housing flange by bolts and nuts.
[0032] In this embodiment, the battery 14 is fixed in the battery box by a pressure plate and a double-ended stud. One end of the double-ended stud is screwed onto a fixing block located on the bottom of the battery box, and the other end is fastened to the pressure plate by a nut.
[0033] In this embodiment, the upper side of the battery box 2 is provided with a battery inspection port, and the front side of the battery box 2 is provided with a battery installation port. The battery inspection port is sealed by rubber gasket 1 7 and battery cover plate 6 through a nut welded inside the battery box 5; the battery installation port is sealed by rubber gasket 2 10 and battery front sealing plate 9 through a nut welded inside the battery box 5.
[0034] In this embodiment, the return oil filter replacement port is sealed by the return oil filter installation cover plate 12, bolts, and O-rings through a flange seat welded to the upper side of the housing; the oil filling port is sealed by the oil filling filter 11 and bolts through a filling seat welded to the upper side of the housing; and the cleaning flange port is sealed by the cleaning flange cover plate 19, bolts, and O-rings through a cleaning flange seat welded to the lower side of the housing.
[0035] In this embodiment, the cover assembly 8 is fixed to the bend on the upper and front sides of the housing by a hinge, a cover plate, and a nut.
[0036] In this embodiment, a lock 21 is provided on the cover plate to fix the cover plate to the front side of the box. The lock 21 consists of a lock body and a lock tongue. The lock body is installed on the front side of the box, and the lock tongue is installed on the front side of the cover plate assembly. Example
[0037] like Figure 6 As shown, an excavator loader is disclosed, which is equipped with a multi-functional fuel tank with negative switch protection as in Embodiment 1. The tank body welding assembly 24 is fixed to the frame 25 by bolts.
[0038] In summary, this utility model, a multi-functional fuel tank with negative switch protection and an excavator loader, solves the problems of insufficient internal installation space and difficulty in arranging components in excavator loaders. It facilitates the management of internal pipelines and component maintenance without affecting assembly. Furthermore, this multi-functional fuel tank allows the user to equip it with a key lock to protect the negative switch from damage and rain impact, providing a certain degree of rain and collision protection. Additionally, the multi-functional fuel tank pedal assembly is made of stamped parts, which offer higher precision, smaller errors, lower cost, and higher efficiency compared to the original welded parts.
[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A multifunctional oil tank, characterized in that it comprises: a tank body, which is divided into an oil tank, a battery tank and a negative switch tank by a partition and a negative switch mounting plate, the battery tank is used for mounting a battery, and the negative switch tank is used for mounting a negative switch; the negative switch tank is provided with a cover assembly for protecting the negative switch; the oil tank is provided with a fuel filling port and an oil return filter mounting cover plate on the top, the fuel filling port is provided with a fuel filling filter, and the tank body is provided with an oil suction port and an oil return port on the side away from the negative switch.
2. The multifunctional tank of claim 1, wherein a footboard assembly is arranged in a recess on the outer side of the tank body.
3. The multifunctional tank of claim 2, wherein one end of the footboard assembly is fixed on a mounting block welded on the outer side wall of the recess by bolts, and the other end is fixed on a through hole of a flange of the tank body by bolts and nuts.
4. The multifunctional tank of claim 1, wherein the battery is fixed in the battery tank by a pressing plate and a stud, one end of the stud is screwed on a fixing block on the bottom surface of the battery tank, and the other end is fastened on the pressing plate by a nut.
5. The multifunctional tank of claim 1, wherein an upper side of the battery tank is provided with a battery maintenance opening, the battery maintenance opening is provided with a front battery cover plate, the battery tank is provided with a battery mounting opening, the battery mounting opening is provided with a battery cover plate, the battery cover plate is connected with the battery tank by bolts, and a rubber pad 1 is arranged between the battery cover plate and the battery mounting opening.
6. The multifunctional tank of claim 5, wherein a rubber pad 2 is arranged between the front battery cover plate and the battery maintenance opening.
7. The multifunctional tank of claim 1, wherein the bottom of the oil tank is provided with a cleaning flange cover plate and a drain port.
8. The multifunctional tank of claim 1, wherein the side of the tank body away from the negative switch is also provided with an oil temperature monitoring port.
9. The multifunctional tank of claim 1, wherein the cover assembly is fixed on the bending part of the upper side and the front side of the tank body by hinges, a cover plate and nuts, the cover plate is provided with a lock for connecting the cover plate with the tank body.
10. An excavator loader characterized by, the multifunctional oil tank according to any one of claims 1-9 is arranged on the frame of an excavator through a tank body welding assembly.