Hydraulic system of airplane sewage vehicle

Abstract

The utility model discloses an airplane sewage vehicle hydraulic system which comprises an installation frame, a hydraulic box body is arranged at the top end of the installation frame, a limiting pressing frame is arranged at the top end of the hydraulic box body, one side of the limiting pressing frame is connected with the installation frame in a hinged mode, and the bottom end of the limiting pressing frame is connected with the installation frame through a locking assembly. A pipeline filter is arranged on one side of the hydraulic box body, and a constant flow type monostable valve is arranged on the side, located on the pipeline filter, of the hydraulic box body. The hydraulic box has the beneficial effects that the limiting pressing frame and the locking assembly are arranged, so that the hydraulic box and the vehicle body mounting frame can be rapidly and fixedly connected, when the hydraulic box needs to be disassembled and maintained, the hydraulic box can be rapidly disassembled from the mounting frame, operation is convenient and fast, the disassembling and assembling efficiency is improved, an overflow valve is replaced with a constant-flow monostable valve, and the working efficiency is improved. An oil return filter is replaced by the pipeline filter, and the pipeline filter and the constant-flow monostable valve are intensively mounted on the hydraulic oil tank, so that the mounting space is reduced, hydraulic pipelines are reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems, in particular to a hydraulic system for an aircraft sewage truck. Background Art

[0002] Aircraft sewage trucks are special ground vehicles used to receive and store sewage and dirt discharged from aircraft toilets and add clean water to toilets. They are special vehicles that must be equipped to ensure normal flights and provide ground services for aircraft. When an aircraft lands after a long flight, the sewage stored in the toilets and restrooms on board needs to be discharged in time to ensure the normal use of subsequent flights. While providing sewage discharge services for various aircraft, sewage trucks are also used for flushing toilets on board, adding clean water, and ground transportation of sewage and discharge to designated locations.

[0003] The hydraulic box and the vehicle body in the existing aircraft sewage truck hydraulic system are mainly fixed by multiple sets of bolts. When the hydraulic box fails and needs to be repaired, it is time-consuming to separate it from the vehicle body. In addition, the overflow valve and the return oil filter in the existing sewage truck hydraulic system are installed separately from the hydraulic box, which occupies a large installation space.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a hydraulic system for an aircraft sewage truck to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] A hydraulic system for an aircraft sewage truck comprises a mounting frame, a hydraulic housing is provided at the top of the mounting frame, a limit pressure frame is provided at the top of the hydraulic housing, one side of the limit pressure frame is hingedly connected to the mounting frame, the bottom end of the limit pressure frame is connected to the mounting frame via a locking assembly, a pipeline filter is provided on one side of the hydraulic housing, a constant flow type monostable valve is provided on the side of the hydraulic housing located on the pipeline filter, and the pipeline filter is respectively connected to the hydraulic housing and the constant flow type monostable valve via a connecting pipe.

[0008] Preferably, symmetrically arranged positioning blocks are respectively provided on both sides of the top end of the mounting frame, and a positioning groove matching the positioning blocks is opened at the bottom end of the hydraulic box body.

[0009] Preferably, the pipeline filter is connected to the hydraulic housing via a first mounting seat, and the constant flow type monostable valve is connected to the hydraulic housing via a second mounting seat.

[0010] Preferably, the locking assembly includes locking grooves that are provided on both sides of the top of the mounting frame and match the limiting pressure frame, a connecting sleeve is provided in the mounting frame, the connecting sleeve is connected to the mounting frame through a U-shaped fixing frame, symmetrically arranged bolt columns are provided on both sides of the connecting sleeve, and an insertion rod extending into the locking groove is provided on the side of the bolt column away from the connecting sleeve, and a slot that matches the insertion rod is provided on the limiting pressure frame.

[0011] Preferably, the connecting sleeve is connected to the U-shaped fixing frame via a bearing, and thread grooves matching the bolt columns are provided on both sides of the connecting sleeve.

[0012] Preferably, the outer wall fixing sleeve of the connecting sleeve is provided with a rotating sleeve.

[0013] Preferably, the insertion rod is welded to the bolt column, a mounting block is fixedly sleeved on the outer wall of the insertion rod, symmetrical guide blocks are provided on both sides of the mounting block, and a guide groove matching the guide block is opened on the inner wall of the U-shaped fixing frame.

[0014] Preferably, the mounting frame is provided with a sliding hole matching the insertion rod.

[0015] The beneficial effects of the utility model are as follows: by setting a limit pressure frame and a locking assembly, the hydraulic box can be quickly fixedly connected to the vehicle body mounting frame. When the hydraulic box needs to be disassembled and repaired, it can be quickly disassembled from the mounting frame, which is convenient to operate and improves the disassembly and assembly efficiency. By using a constant flow type monostable valve to replace the overflow valve, and using a pipeline filter to replace the return oil filter, the pipeline filter and the constant flow type monostable valve are centrally installed on the hydraulic oil tank, which reduces the installation space, reduces the hydraulic pipeline, and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of a hydraulic system of an aircraft sewage truck according to an embodiment of the utility model;

[0018] Figure 2 It is a right view of a hydraulic system of an aircraft sewage truck according to an embodiment of the utility model;

[0019] Figure 3 It is a structural schematic diagram of a mounting frame in a hydraulic system of an aircraft sewage truck according to an embodiment of the utility model;

[0020] Figure 4 is a cross-sectional view of a mounting frame in a hydraulic system of an aircraft sewage truck according to an embodiment of the utility model;

[0021] Figure 5 yes Figure 4 A local enlarged schematic diagram of the middle A;

[0022] Figure 6 It is a cross-sectional view of a connecting sleeve in a hydraulic system of an aircraft sewage truck according to an embodiment of the utility model.

[0023] In the figure:

[0024] 1. Mounting frame; 2. Hydraulic box; 3. Limiting pressure frame; 4. Pipeline filter; 5. Constant flow type monostable valve; 6. Connecting pipe; 7. Positioning block; 8. Mounting seat 1; 9. Mounting seat 2; 10. Locking groove; 11. Connecting sleeve; 12. U-shaped fixing frame; 13. Bolt column; 14. Insert rod; 15. Bearing; 16. Threaded groove; 17. Rotating sleeve; 18. Mounting block; 19. Guide block; 20. Guide groove. DETAILED DESCRIPTION

[0025] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] According to an embodiment of the utility model, a hydraulic system for an aircraft sewage truck is provided.

[0027] Embodiment 1;

[0028] like Figure 1-6 As shown, the hydraulic system of an aircraft sewage truck according to an embodiment of the utility model includes a mounting frame 1, a hydraulic box body 2 is provided at the top of the mounting frame 1, a limit pressure frame 3 is provided at the top of the hydraulic box body 2, one side of the limit pressure frame 3 is hingedly connected to the mounting frame 1, and the bottom end of the limit pressure frame 3 is connected to the mounting frame 1 through a locking assembly, a pipeline filter 4 is provided on one side of the hydraulic box body 2, a constant flow type monostable valve 5 is provided on the side of the hydraulic box body 2 located on the pipeline filter 4, and the pipeline filter 4 is respectively connected to the hydraulic box body 2 and the constant flow type monostable valve 5 through a connecting pipe 6.

[0029] Embodiment 2:

[0030] like Figure 1-6As shown, it includes a mounting frame 1, a hydraulic box 2 is provided at the top of the mounting frame 1, a limit pressure frame 3 is provided at the top of the hydraulic box 2, one side of the limit pressure frame 3 is hingedly connected to the mounting frame 1, and the bottom of the limit pressure frame 3 is connected to the mounting frame 1 through a locking assembly, a pipeline filter 4 is provided on one side of the hydraulic box 2, a constant flow type monostable valve 5 is provided on the side of the hydraulic box 2 located at the pipeline filter 4, and the pipeline filter 4 is respectively connected to the hydraulic box 2 and the constant flow type monostable valve 5 through a connecting pipe 6. The pipeline filter 4 is connected to the hydraulic box 2 through a mounting seat 1 8, and the constant flow type monostable valve 5 is connected to the hydraulic box 2 through a mounting seat 2 9. By replacing the overflow valve with a constant flow type monostable valve 5, replacing the return oil filter with a pipeline filter 4, and centrally installing the pipeline filter 4 and the constant flow type monostable valve 5 on the hydraulic oil tank, the installation space is reduced, the hydraulic pipeline is reduced, and the cost is reduced.

[0031] Embodiment three;

[0032] like Figure 1-6As shown, it includes a mounting frame 1, a hydraulic box 2 is provided at the top of the mounting frame 1, a limit pressure frame 3 is provided at the top of the hydraulic box 2, one side of the limit pressure frame 3 is hingedly connected to the mounting frame 1, and the bottom of the limit pressure frame 3 is connected to the mounting frame 1 through a locking assembly, a pipeline filter 4 is provided on one side of the hydraulic box 2, a constant flow type monostable valve 5 is provided on one side of the hydraulic box 2 located on the pipeline filter 4, and the pipeline filter 4 is respectively connected to the hydraulic box 2 and the constant flow type monostable valve 5 through a connecting pipe 6. Both sides of the top of the mounting frame 1 are respectively provided with symmetrically arranged positioning blocks 7, and the bottom of the hydraulic box 2 is provided with a positioning groove matching the positioning block 7. The locking assembly includes locking grooves 10 matching the position limiting pressure frame 3, which are provided on both sides of the top of the mounting frame 1. The mounting frame 1 is provided with a connecting sleeve 11, which is connected to the mounting frame 1 through a U-shaped fixing frame 12. The connecting sleeve 11 is provided with symmetrically arranged bolt columns 13 on both sides. The bolt column 13 is provided with an insert rod 14 extending into the locking groove 10 on the side away from the connecting sleeve 11. The position limiting pressure frame 3 is provided with a slot matching the insert rod 14. The connecting sleeve 11 is connected to the U-shaped fixing frame 12 through a bearing 15, and the connecting sleeve 11 is provided with a threaded groove 16 matching the bolt column 13 on both sides. The outer wall of the connecting sleeve 11 is fixed with a rotating sleeve 17. The insert rod 14 is welded to the bolt column 13, and the outer wall of the insert rod 14 is fixed with a mounting block 18. The mounting block 18 is provided with symmetrically arranged guide blocks 19 on both sides, and the inner wall of the U-shaped fixing frame 12 is provided with a guide groove 20 matching the guide block 19. The mounting frame 1 is provided with a sliding hole matching the insertion rod 14. When the hydraulic box body 2 needs to be removed from the mounting frame 1, the rotating sleeve 17 is rotated to drive the connecting sleeve 11 to rotate, the connecting sleeve 11 is threadedly connected with the bolt column 13, and the bolt column 13 is fixedly connected with the insertion rod 14, and the insertion rod 14 is guided and limited by the guide block 19. When the connecting sleeve 11 rotates, the two groups of bolt columns 13 are driven to move similarly, and the bolt column 13 drives the insertion rod 14 to disengage from the slot on the limiting pressure frame 3. At this time, the limiting pressure frame 3 is rotated to pull it out of the locking groove 10, and the hydraulic box body is released. By setting the limiting pressure frame and the locking assembly, the hydraulic box can be quickly fixedly connected to the vehicle body mounting frame. When the hydraulic box needs to be disassembled and repaired, it can be quickly disassembled from the mounting frame, which is convenient to operate and improves the disassembly and assembly efficiency.

[0033] In actual application, the overflow valve is replaced by the constant flow type monostable valve 5, and the return oil filter is replaced by the pipeline filter 4. The pipeline filter 4 and the constant flow type monostable valve 5 are centrally installed on the hydraulic oil tank, which reduces the installation space, reduces the hydraulic pipeline, and reduces the cost. When the hydraulic box body 2 needs to be removed from the mounting frame 1, the rotating sleeve 17 drives the connecting sleeve 11 to rotate, the connecting sleeve 11 is threadedly connected with the bolt column 13, and the bolt column 13 is fixedly connected with the plug rod 14, and the plug rod 14 is guided and limited by the guide block 19. When the connecting sleeve 11 rotates, the two groups of bolt columns 13 are driven to move similarly, and the bolt column 13 drives the plug rod 14 to disengage from the slot on the limit pressing frame 3. At this time, the limit pressing frame 3 is rotated to pull it out of the locking groove 10, and the limit of the hydraulic box body is released. By setting the limit pressing frame and the locking assembly, the hydraulic box can be quickly fixedly connected to the vehicle body mounting frame. When the hydraulic box needs to be disassembled and repaired, it can be quickly disassembled from the mounting frame, which is convenient to operate and improves the disassembly and assembly efficiency.

[0034] To sum up, with the help of the above-mentioned technical scheme of the utility model, the hydraulic box can be quickly fixedly connected to the vehicle body mounting frame by setting a limit pressure frame and a locking assembly. When the hydraulic box needs to be disassembled and repaired, it can be quickly disassembled from the mounting frame, which is convenient to operate and improves the disassembly and assembly efficiency. By using a constant flow type monostable valve to replace the overflow valve, and using a pipeline filter to replace the return oil filter, the pipeline filter and the constant flow type monostable valve are centrally installed on the hydraulic oil tank, which can reduce the installation space, reduce the hydraulic pipeline, and reduce the cost.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic system for an aircraft sewage truck, characterized in that: The invention comprises a mounting frame (1), wherein a hydraulic box (2) is provided at the top of the mounting frame (1), a limit pressure frame (3) is provided at the top of the hydraulic box (2), one side of the limit pressure frame (3) is hingedly connected to the mounting frame (1), and the bottom end of the limit pressure frame (3) is connected to the mounting frame (1) via a locking assembly, a pipeline filter (4) is provided at one side of the hydraulic box (2), a constant flow type monostable valve (5) is provided on one side of the hydraulic box (2) located on the pipeline filter (4), and the pipeline filter (4) is respectively connected to the hydraulic box (2) and the constant flow type monostable valve (5) via a connecting pipe (6).

2. The hydraulic system of an aircraft sewage truck according to claim 1, characterized in that: The pipeline filter (4) is connected to the hydraulic box (2) via a first mounting seat (8), and the constant flow type monostable valve (5) is connected to the hydraulic box (2) via a second mounting seat (9).

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