Novel cleaning type oil tank for wheel type two-end loader-digger

Abstract

The utility model discloses a novel cleaning type oil tank for a wheel type two-end-busy backhoe loader, which relates to the technical field of loaders and particularly comprises an oil tank body, and a filtering structure and a cooling structure are arranged at the top end of an inner cavity of the oil tank body from top to bottom. A tank cover is fixed to the top of an inner cavity of the oil tank body, an oil supplementing pipe and an oil returning pipe are arranged on the tank cover, an oil outlet pipe is fixed to one side of the oil tank body, and the bottom end of the oil outlet pipe extends to the bottom end of the inner cavity of the oil tank body. The cooling structure comprises a first cooling plate fixed to one end of an inner cavity of the oil tank body and a second cooling plate fixed to the other end of the inner cavity of the oil tank body. Through the arrangement of the rotating motor, the gear and the gear ring, the rotating motor can drive the filtering structure to rotate, hydraulic oil among impurities intercepted by the filtering structure can be rapidly separated from the impurities, rapid recovery of the hydraulic oil among the impurities is achieved, loss of the hydraulic oil is reduced, and the hydraulic oil filtering efficiency can be improved through rotation of the filtering structure.

Description

Technical Field

[0001] The utility model relates to the technical field of loaders, in particular to a clean fuel tank for a new type of wheeled two-end working excavator-loader. Background Technique

[0002] A wheeled two-end working excavator-loader is an excavator-loader that can perform operations in both the front and rear directions simultaneously. During construction, the operator only needs to turn the seat to change the working end. Compared with large single-function equipment (such as crawler excavators), the excavator-loader is more compact in size. Moreover, it can move around on various construction sites and even run on the road. In the hydraulic system of a wheeled two-end working excavator-loader, the hydraulic fuel tank is an important container for storing the working fluid required by the hydraulic system, and it also has the functions of heat dissipation, sediment impurity precipitation, and air bubble separation in the liquid. The required working fluid is provided to the hydraulic system through a suction pipe by fixing the hydraulic fuel tank on the platform.

[0003] In the prior art, some solutions regarding hydraulic fuel tanks have been disclosed. For example, a clean fuel tank for an excavator-loader disclosed in the authorized patent with the application number CN202022711359.3 includes a box body, the box body is formed by welding steel plates, the box body is equipped with an oil return filter, an oil outlet filter, and an oil injection filter, a clean oil hole is arranged on the right surface of the box body, and two drain holes are arranged at the lower end of the right surface of the box body and other components. When the above solution is used, different filters are used to filter the hydraulic oil when refueling, inletting oil, and outlettng oil for the fuel tank, making the solution relatively cumbersome. After the filter has been used for a period of time, it needs to be cleaned, and the cleaning of multiple filters is rather troublesome. Moreover, the residue filtered out contains some hydraulic oil. When multiple filters are used for filtration, it is not easy to recover the hydraulic oil contained in the residue. Based on this, the present application proposes a clean fuel tank for a new type of wheeled two-end working excavator-loader. Content of the Utility Model

[0004] The utility model provides a clean fuel tank for a new type of wheeled two-end working excavator-loader, which solves the problems proposed in the above background technique that using multiple filters to filter hydraulic oil makes the solution relatively cumbersome, is not convenient for cleaning the filters, the residue filtered out contains some hydraulic oil, and it is not conducive to recovering the hydraulic oil in the residue when using multiple filters to filter hydraulic oil.

[0005] The utility model provides the following technical solution: A clean fuel tank for a new type of wheeled two-end working excavator-loader, including a fuel tank body, a filtering structure and a temperature-lowering structure are arranged from top to bottom at the top of the inner cavity of the fuel tank body; a box cover is fixed at the top of the inner cavity of the fuel tank body, a make-up oil pipe and a return oil pipe are arranged on the box cover, an oil outlet pipe is fixed on one side of the fuel tank body, and the bottom end of the oil outlet pipe extends to the bottom end of the inner cavity of the fuel tank body;

[0006] The temperature reduction structure includes a first temperature reduction plate fixed to one end of the inner cavity of the fuel tank body and a second temperature reduction plate fixed to the other end of the inner cavity of the fuel tank body.

[0007] The filtering structure is movably connected to the fuel tank body. The filtering structure includes an outer filter screen, a middle filter screen placed inside the outer filter screen, an inner filter screen placed inside the inner cavity of the middle filter screen, a temperature detector fixedly connected to the top of the inner cavity of the inner filter screen, and a connecting ring. The outer filter screen, the middle filter screen, and the inner filter screen are all clamped to the connecting ring through clamping blocks.

[0008] Preferably, both the first temperature reduction plate and the second temperature reduction plate are inclined. The second temperature reduction plate is located above the lower end of the first temperature reduction plate, and the upper end of the second temperature reduction plate is fixedly connected to the inner wall of the fuel tank body.

[0009] Preferably, a toothed ring is fixedly installed on the outer ring of the connecting ring, a rotating motor is fixedly connected to the top of the fuel tank body, a gear is fixedly connected to the end of the output shaft of the rotating motor, and the gear meshes with the toothed ring.

[0010] Preferably, a placement ring is fixedly connected to the top end of the inner cavity of the fuel tank body. The inner diameter of the placement ring is larger than the outer diameter of the outer filter screen, and the outer diameter of the placement ring is smaller than the outer diameter of the connecting ring.

[0011] Preferably, fixing columns are fixedly installed at the tops of the outer filter screen, the middle filter screen, and the inner filter screen. Through holes adapted to the fixing columns are provided on the connecting ring. A clamping groove is provided at the top end of the fixing column, and the clamping block is adapted to the clamping groove.

[0012] Preferably, isolation blocks are fixedly installed at the bottoms of both the middle filter screen and the inner filter screen, and the bottoms of the isolation blocks are in contact with the bottom of the inner cavity of the outer filter screen or the bottom of the inner cavity of the middle filter screen.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. For the novel clean-type fuel tank of the wheeled two-end loader, through the arrangement of the filtering structure, the filtering structure can be used to filter both the supplementary hydraulic oil and the returned hydraulic oil at the same time, reducing the complexity of the clean fuel tank. Moreover, the filtering structure and the fuel tank body can be quickly disassembled and assembled, and each part of the filtering structure can be quickly disassembled and assembled, which can improve the cleaning efficiency of the filtering structure. Through the arrangement of the rotating motor, the gear, and the toothed ring, the rotating motor can drive the filtering structure to rotate, enabling the hydraulic oil between the impurities intercepted by the filtering structure to be quickly separated from the impurities, realizing the quick recovery of the hydraulic oil between the impurities, reducing the loss of hydraulic oil, and the rotation of the filtering structure can improve the filtering efficiency of the hydraulic oil.

[0015] 2. The clean fuel tank for the new type of wheeled loader-excavator can cool the hydraulic oil entering the fuel tank body through the cooling structure and the temperature detector, avoiding the influence of the temperature of the filtered hydraulic oil on the hydraulic oil in the fuel tank body, and facilitating the application of this fuel tank in the wheeled loader-excavator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front schematic view of the structure of the present utility model;

[0017] Figure 2 is a schematic view of the opened cover of the structure of the present utility model;

[0018] Figure 3 is the structure of the present utility model Figure 1 internal schematic view;

[0019] Figure 4 is the structure of the present utility model Figure 1 front sectional view;

[0020] Figure 5 is a sectional schematic view of the filter structure of the present utility model;

[0021] Figure 6 is an exploded schematic view of the filter structure of the present utility model.

[0022] In the figures: 1, fuel tank body; 2, cover; 3, make-up oil pipe; 4, return oil pipe; 5, rotating motor; 6, oil outlet pipe; 7, semiconductor refrigerator; 8, temperature detector; 9, connecting ring; 10, placing ring; 11, gear; 12, second cooling plate; 13, clamping block; 14, inner filter screen; 15, middle filter screen; 16, outer filter screen; 17, isolation block; 18, first cooling plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The utility model provides a clean-type fuel tank for a new type of wheeled backhoe loader, which includes a fuel tank body 1. At the top of the inner cavity of the fuel tank body 1, a filtering structure and a cooling structure are arranged from top to bottom. When the fuel tank is in use, the filtering structure can filter the hydraulic oil entering the fuel tank, facilitating the operation of the hydraulic system of the wheeled backhoe loader. The cooling structure can cool the hydraulic oil entering the fuel tank, preventing the temperature of the hydraulic oil in the fuel tank from rising and prolonging the service life of the hydraulic oil.

[0025] A placing ring 10 is fixedly connected to the top of the inner cavity of the fuel tank body 1. The placing ring 10 can support the filtering structure, and the filtering structure is in a movable connection with the placing ring 10, facilitating the quick disassembly and assembly of the filtering structure.

[0026] The filtering structure includes an outer filter screen 16, a middle filter screen 15 placed inside the outer filter screen 16, an inner filter screen 14 placed inside the inner cavity of the middle filter screen 15, a temperature detector 8, and a connecting ring 9. Fixed columns are fixed to the tops of the outer filter screen 16, the middle filter screen 15, and the inner filter screen 14. Through holes adapted to the fixed columns are provided on the connecting ring 9, and clamping grooves are provided at the tops of the fixed columns. The clamping blocks 13 are adapted to the clamping grooves. Through the arrangement of the clamping blocks 13, the clamping blocks 13 can limit the fixed columns, enabling the outer filter screen 16, the middle filter screen 15, the inner filter screen 14, and the connecting ring 9 to be spliced into a filtering structure, and the filtering structure can be quickly disassembled and assembled, facilitating the cleaning of impurities inside the filtering structure.

[0027] Isolation blocks 17 are fixed to the bottoms of both the middle filter screen 15 and the inner filter screen 14. The bottoms of the isolation blocks 17 are in contact with the bottom of the inner cavity of the outer filter screen 16 or the bottom of the inner cavity of the middle filter screen 15. Through the arrangement of the isolation blocks 17, a gap is formed between the bottom of the middle filter screen 15 and the outer filter screen 16, and a gap is formed between the inner filter screen 14 and the middle filter screen 15, facilitating the discharge of hydraulic oil from the bottoms of the inner filter screen 14, the middle filter screen 15, and the outer filter screen 16.

[0028] When the filtering structure is in use, it can triple-filter the hydraulic oil to ensure the cleanliness of the hydraulic oil entering the fuel tank body 1.

[0029] A temperature detector 8 is fixedly connected to the top of the inner cavity of the inner filter screen 14. Through the arrangement of the temperature detector 8, the temperature detector 8 can detect the temperature of the hydraulic oil entering the fuel tank body 1, facilitating the timely cooling of the hydraulic oil.

[0030] A toothed ring is fixed on the outer ring of the connecting ring 9. A rotating motor 5 is fixedly connected to the top of the fuel tank body 1. The end of the output shaft of the rotating motor 5 is fixedly connected to a gear 11. The gear 11 meshes with the toothed ring. Through the setting of the rotating motor 5, the rotation of the rotating motor 5 can drive the gear 11 fixedly connected thereto to rotate. The gear 11 can drive the connecting ring 9 to rotate through the meshing toothed ring. When the filtering structure rotates, under the action of centrifugal force, the hydraulic oil between the impurities can be separated from the impurities, realizing the rapid recovery of the hydraulic oil between the filtered impurities and reducing the waste of the cooling hydraulic oil.

[0031] A box cover 2 is fixed to the top of the inner cavity of the fuel tank body 1, and a rotating ring is movably connected to the bottom of the box cover 2. The box cover 2 contacts the top of the filtering structure through the rotating ring. When the box cover 2 is fixed to the fuel tank body 1, the box cover 2 can limit the filtering structure, so that the filtering structure can only perform circular motion, which is convenient for the use of the filtering structure.

[0032] A supplementary oil pipe 3 and a return oil pipe 4 are provided on the box cover 2. An oil outlet pipe 6 is fixed to one side of the fuel tank body 1, and the bottom end of the oil outlet pipe 6 extends to the bottom end of the inner cavity of the fuel tank body 1.

[0033] The inner diameter of the above-mentioned placing ring 10 is larger than the outer diameter of the outer filter net 16, and the outer diameter of the placing ring 10 is smaller than the outer diameter of the connecting ring 9. The filtering structure can be quickly disassembled and assembled, which is convenient for cleaning the filtering structure.

[0034] The above-mentioned cooling structure includes a first cooling plate 18 and a second cooling plate 12. Both the first cooling plate 18 and the second cooling plate 12 are inclined. The high end of the first cooling plate 18 is fixedly connected to one side of the inner cavity of the fuel tank body 1, and the high end of the second cooling plate 12 is fixedly connected to the other side of the inner cavity of the fuel tank body 1, and the second cooling plate 12 is located above the low end of the first cooling plate 18. Through the setting of the cooling structure, the filtered hydraulic oil can slide down along the first cooling plate 18 and the second cooling plate 12 under the action of gravity. The hydraulic oil exchanges heat with the first cooling plate 18 or the second cooling plate 12 during the sliding process, avoiding the influence of the temperature of the filtered hydraulic oil on the hydraulic oil existing at the bottom end of the inner cavity of the fuel tank body 1.

[0035] In some embodiments of the present application, the inner cavities of both the first cooling plate 18 and the second cooling plate 12 are filled with a coolant. The first cooling plate 18 and the second cooling plate 12 both use a semiconductor refrigerator 7 to cool the coolant, and the hot end of the semiconductor refrigerator 7 is located outside the fuel tank body 1.

[0036] All the electrical components involved in this application are prior arts. Those skilled in the art are familiar with their connection methods. Through those skilled in the art, all the electrical components in this application are connected to their adapted power sources through wires, and a suitable controller is selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, please refer to the following description. The electrical components are electrically connected in the order of their sequential operations. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no further description of electrical control will be made.

[0037] In summary, when the novel wheeled backhoe loader's clean-type fuel tank is in use, the hydraulic oil in the hydraulic oil tank enters the hydraulic system of the wheeled backhoe loader through the oil outlet pipe 6. The hydraulic oil in the hydraulic system of the wheeled backhoe loader enters the fuel tank body 1 through the oil return pipe 4. The staff replenishes the hydraulic oil to the fuel tank body 1 through the oil replenishing pipe 3. And the refluxed hydraulic oil and the replenished hydraulic oil need to be filtered through the filtering structure and slide down along the temperature reduction structure before being mixed with the lubricating oil in the fuel tank body 1. The temperature detector 8 detects the temperature of the hydraulic oil entering the filtering structure in real time. When the hydraulic oil needs to be cooled, both the first cooling plate 18 and the second cooling plate 12 work. When the hydraulic oil slides down along the first cooling plate 18 and the second cooling plate 12, heat exchange can occur between the first cooling plate 18 or the second cooling plate 12 and the hydraulic oil to reduce the temperature of the hydraulic oil. When it is necessary to clean the filtering structure, the rotation motor 5 is started. The rotation motor 5 drives the gear 11 fixedly connected thereto to rotate. The gear 11 drives the connecting ring 9 to rotate through the toothed ring. The connecting ring 9 drives the outer filter screen 16, the middle filter screen 15 and the inner filter screen 14 to rotate. During the rotation of the filtering structure, the hydraulic oil between the impurities intercepted by the filtering structure can be separated from the impurities, reducing the waste of hydraulic oil. The staff opens the box cover 2 and pulls up the filtering structure to take out the filtering structure. The staff removes the clamping block 13 to quickly remove the outer filter screen 16, the middle filter screen 15, the inner filter screen 14 and the connecting ring 9, facilitating the cleaning of the filtering structure.

[0038] All the standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A novel clean fuel tank for a wheeled backhoe loader, comprising a fuel tank body (1), characterized in that: The top of the inner cavity of the oil tank body (1) is provided with a filtering structure and a cooling structure from top to bottom; a tank cover (2) is fixed to the top of the inner cavity of the oil tank body (1), and an oil replenishing pipe (3) and an oil return pipe (4) are provided on the tank cover (2); an oil outlet pipe (6) is fixed to one side of the oil tank body (1), and the bottom end of the oil outlet pipe (6) extends to the bottom end of the inner cavity of the oil tank body (1); The cooling structure comprises a first cooling plate (18) fixed to one end of the inner cavity of the oil tank body (1) and a second cooling plate (12) fixed to the other end of the inner cavity of the oil tank body (1); The filter structure is movably connected to the oil tank body (1), and comprises an outer filter (16), a middle filter (15) placed inside the outer filter (16), an inner filter (14) placed inside the inner cavity of the middle filter (15), a temperature detector (8) fixedly connected to the top of the inner cavity of the inner filter (14), and a connecting ring (9); the outer filter (16), the middle filter (15) and the inner filter (14) are connected to the connecting ring (9) via a clamping block (13).

2. A novel clean fuel tank for a wheeled backhoe loader according to claim 1, characterized in that: The first cooling plate (18) and the second cooling plate (12) are both inclined; the second cooling plate (12) is located above the lower end of the first cooling plate (18); and the upper end of the second cooling plate (12) is fixedly connected to the inner wall of the oil tank body (1).

3. The novel clean fuel tank for a wheeled backhoe loader according to claim 1 is characterized by: A gear ring is fixed to the outer ring of the connecting ring (9), a rotating motor (5) is fixedly connected to the top of the oil tank body (1), a gear (11) is fixedly connected to the end of the output shaft of the rotating motor (5), and the gear (11) is meshed with the gear ring.

4. The novel clean fuel tank for a wheeled backhoe loader according to claim 1 is characterized in that: A placement ring (10) is fixedly connected to the top end of the inner cavity of the oil tank body (1), the inner diameter of the placement ring (10) is larger than the outer diameter of the outer filter screen (16), and the outer diameter of the placement ring (10) is smaller than the outer diameter of the connection ring (9).

5. The novel clean fuel tank for a wheeled backhoe loader according to claim 1 is characterized in that: The tops of the outer filter (16), the middle filter (15) and the inner filter (14) are all fixed with fixing columns, the connecting ring (9) is provided with a through hole adapted to the fixing column, the top of the fixing column is provided with a slot, and the clamping block (13) is adapted to the slot.

6. The novel clean fuel tank for a wheeled backhoe loader according to claim 1 is characterized by: An isolation block (17) is fixed to the bottom of both the middle filter screen (15) and the inner filter screen (14), and the bottom of the isolation block (17) contacts the bottom of the inner cavity of the outer filter screen (16) or the bottom of the inner cavity of the middle filter screen (15).

Images