Unmanned aerial vehicle hydraulic system test bed

Abstract

The utility model relates to the technical field of hydraulic system test stands, and provides an unmanned aerial vehicle hydraulic system test stand which comprises a test stand body and an oil receiving tray, the oil receiving tray is in a box shape with an opening in the top, the test stand body is located in the oil receiving tray, a plurality of supporting blocks are arranged at the bottom of the test stand body and fixedly connected with the inner bottom face of the oil receiving tray, and the oil receiving tray is located in the oil receiving tray. According to the utility model, hydraulic oil can be collected by the oil receiving disc and drops on the test bed main body, even if the hydraulic oil is not cleaned in time, the hydraulic oil can be prevented from dropping on the ground to pollute the working environment, and the collected hydraulic oil can be reused, so that the resource waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic system test benches, and in particular to a hydraulic system test bench for unmanned aerial vehicles. Background Art

[0002] In view of the sharp increase in the load of the hydraulic system of drones, it is necessary to carry out research and verification of the hydraulic system principles to meet the requirements of the key technologies and characteristics of the next generation of hydraulic systems and provide data support for technical decisions. At present, the various components of the hydraulic system are usually disassembled and placed on the test bench, and the various components are connected through pipes for experiments. However, even if the hydraulic oil has been discharged before disassembly, a small amount of hydraulic oil is still adhered to the disassembled components. The hydraulic oil drips on the test bench. If it is not cleaned in time, it will drip on the ground, polluting the working environment and causing waste of resources. Utility Model Content

[0003] The purpose of the utility model is to provide a UAV hydraulic system test bench to solve the above-mentioned defects of the prior art.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A test bench for the hydraulic system of an unmanned aerial vehicle comprises a test bench main body and an oil receiving pan. The oil receiving pan is in the shape of a box with an opening at the top. The test bench main body is located inside the oil receiving pan. A plurality of support blocks are provided at the bottom of the test bench main body. The support blocks are fixedly connected to the inner bottom surface of the oil receiving pan.

[0006] Optionally, the test bench body includes a frame and a table top, the frame is welded from steel sections into a six-sided open rectangular structure, the table top is welded to the top of the frame, and the support block is welded to the bottom of the frame.

[0007] Optionally, the steel section is one or more of C-steel, channel steel, I-steel, and H-steel.

[0008] Optionally, a support frame is provided on one side of the bottom of the test bench body, the support frame is located in the oil receiving pan, and a flow simulation system mounting platform and a simulated cooling system mounting plate are provided on the top of the support frame.

[0009] Optionally, a bracket group is provided on the top of the test bench body, and the bracket group includes but is not limited to a fuel-hydraulic oil radiator bracket, a fuel tank bracket, an accumulator-oil filter bracket, an oil filter bracket, a system accumulator-buffer bottle bracket, a safety valve bracket, a joint bracket, and a pipe clamp bracket.

[0010] Optionally, at least two of the fuel tank brackets are arranged in parallel, and the fuel tank bracket includes a support seat, an arc-shaped support, a first spring clip and a second spring clip. The support seat is fixedly connected to the test bench body, the arc-shaped support is fixedly connected to the support seat, one end of the first spring clip is fixedly connected to one end of the arc-shaped support, one end of the second spring clip is fixedly connected to the other end of the arc-shaped support, and the other end of the first spring clip is detachably connected to the other end of the second spring clip.

[0011] Optionally, one of the first spring piece and the second spring piece is rotatably provided with a rotating rod, a screw is provided in the middle of the rotating rod, and the other is provided with a connecting seat, a notch for accommodating the screw is provided on the connecting seat, a threaded barrel is connected to the screw, and after the screw is rotated into the notch, the end face of the threaded barrel abuts against the connecting seat, thereby locking the screw.

[0012] The technical solution of the present utility model has at least the following advantages and beneficial effects: in the present utility model, an oil receiving pan is provided, and the test bench main body is arranged inside the oil receiving pan. The hydraulic oil can be collected by the oil receiving pan, and the hydraulic oil drips on the test bench main body. Even if it is not cleaned up in time, it can prevent the hydraulic oil from dripping on the ground and polluting the working environment, and the collected hydraulic oil can be reused, thereby reducing waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A structural schematic diagram of a UAV hydraulic system test bench provided by the utility model;

[0015] Figure 2 It is an enlarged structural schematic diagram of the fuel tank bracket;

[0016] Icons: 1-oil tray, 2-test bench body, 201-test bench, 202-table top, 3-support frame, 4-flow simulation system mounting table, 5-simulation cooling system mounting plate, 6-fuel-hydraulic oil radiator bracket, 7-fuel tank bracket, 701-support seat, 702-arc support, 703-first spring clip, 704-second spring clip, 705-rotating rod, 706-screw, 707-threaded cylinder, 708-connecting seat, 7081-notch, 8-accumulator-oil filter bracket, 9-oil filter bracket, 10-system accumulator-buffer bottle bracket, 11-safety valve bracket, 12-connector bracket, 13-pipe clamp bracket. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0020] refer to Figure 1 A test bench for a hydraulic system of an unmanned aerial vehicle includes a test bench body 2 and an oil receiving pan 1. The oil receiving pan 1 is in the shape of a box with an opening at the top. The test bench body 2 is located inside the oil receiving pan 1. A plurality of support blocks are provided at the bottom of the test bench body 2. The support blocks are fixedly connected to the inner bottom surface of the oil receiving pan 1. Specifically, in actual applications, the support blocks, the oil receiving pan 1 and the ground are fixed by bolts.

[0021] It is worth mentioning that the oil collecting pan 1 is set up so that the hydraulic oil can be collected by the oil collecting pan 1. The hydraulic oil drips onto the test bench body 2. Even if it is not cleaned up in time, it can prevent the hydraulic oil from dripping onto the ground and polluting the working environment. Moreover, the collected hydraulic oil can be reused, reducing waste of resources.

[0022] The test bench body 2 includes a frame 201 and a table top 202. The frame 201 is welded from steel sections into a six-sided open rectangular parallelepiped structure, that is, each steel section constitutes the edge of the rectangular parallelepiped. In this embodiment, the steel sections constituting the frame 201 are selected from channel steels. In other embodiments, the steel sections constituting the frame 201 may also be selected from C-shaped steels, I-shaped steels, or H-shaped steels. Of course, the steel sections constituting the frame 201 may also be a combination of C-shaped steels, channel steels, I-shaped steels, and H-shaped steels.

[0023] The table top 202 is welded to the top of the stand 201 as a working surface, and the support block is welded to the bottom of the stand 201 to cushion the stand 201 and prevent the bottom of the stand 201 from being immersed in the hydraulic oil in the oil pan 1. Furthermore, in actual applications, the depth of the oil pan 1 can be less than the thickness of the support block.

[0024] The support frame 3 is arranged on one side of the bottom of the test bench body 2 and is connected to the test bench 201. The support frame 3 is also located in the oil pan 1. The top of the support frame 3 is provided with a flow simulation system mounting platform 4 and a simulated cooling system mounting plate 5. The flow simulation system mounting platform 4 is located above the simulated cooling system mounting plate 5. The flow simulation system mounting platform 4 is used to install the flow simulation system, and the simulated cooling system mounting plate 5 is used to install the simulated cooling system.

[0025] A bracket group is provided on the top of the test bench body 2, which includes but is not limited to a fuel-hydraulic oil radiator bracket 6, a fuel tank bracket 7, an accumulator-oil filter bracket 8, an oil filter bracket 9, a system accumulator-buffer bottle bracket 10, a safety valve bracket 11, a joint bracket 12, and a pipe clamp bracket 13. Specifically, the fuel-hydraulic oil radiator bracket 6 is bolted to the left side of the table 202 for installing the fuel-hydraulic oil radiator; at least two fuel tank brackets 7 are provided, and are installed symmetrically on the right side of the fuel-hydraulic oil radiator bracket 6, and are symmetrical with the table The table 202 is bolted to the accumulator-oil filter bracket 8 for installing the on-board oil tank; the accumulator-oil filter bracket 8 is a frame structure, installed in the middle of the table 202, and is used for installing the on-board accumulator and oil filter; the oil filter bracket 9 is installed on the table 202 by bolts, located on the right side of the accumulator-oil filter bracket 8, and is used for installing various oil filters on the machine; the system accumulator-buffer bottle bracket 10 is bolted to the right side of the table 202, and is used for installing the system accumulator and buffer bottle; the safety valve bracket 11 is connected to the right side of the table 202, and is used for installing the on-board safety valve.

[0026] The joint bracket 12 and the pipe clamp bracket 13 are both located above the table 202. The joint bracket 12 is used to install the pipe joint, and the pipe clamp bracket 13 is used to install the pipe clamp. In actual applications, more joint brackets 12 and pipe clamp brackets 13 can be set according to the distribution requirements of the pipelines of the hydraulic energy system of the drone.

[0027] It is worth noting that on the traditional test bench, the fuel tank bracket 7 is not convenient for disassembly and assembly of the fuel tank. Figure 2, the present embodiment makes the following improvements to the fuel tank bracket 7. Specifically, the fuel tank bracket 7 includes a support seat 701, an arc-shaped support seat 702, a first spring piece 703 and a second spring piece 704. The support seat 701 is fixedly connected (preferably bolted) to the test bench body 2, the arc-shaped support seat 702 is fixedly connected (preferably welded) to the support seat 701, one end of the first spring piece 703 is fixedly connected to one end of the arc-shaped support seat 702, one end of the second spring piece 704 is fixedly connected to the other end of the arc-shaped support seat 702, and the other end of the first spring piece 703 is detachably connected to the other end of the second spring piece 704. After the first spring piece 703 and the second spring piece 704 are connected, it should be understood that the first spring piece 703, the second spring piece 704 and the arc-shaped support seat 702 together enclose a ring structure that hoops the fuel tank. In addition, it is easy to understand that the first spring piece 703 and the second spring piece 704 are elastic (in actual applications, they can be made of spring steel) and can be bent, which is convenient for taking and placing the fuel tank.

[0028] In some embodiments, the first spring piece 703 and the second spring piece 704 can be directly connected by bolts, and the bolts can be disassembled to achieve the access to the oil tank, but this method requires the bolts to be completely removed, and the number of turns of the bolts is large, which is inconvenient to use. Therefore, the specific connection method of the first spring piece 703 and the second spring piece 704 in this embodiment is as follows: a rotating rod 705 is rotatably provided at the end of the first spring piece 703, a screw 706 is provided in the middle of the rotating rod 705, and a connecting seat 708 is provided at the end of the second spring piece 704, a notch 7081 that can accommodate the screw 706 is provided on the connecting seat 708, and a threaded barrel 707 is connected to the screw 706.

[0029] When connecting, the screw rod 706 is rotated into the notch 7081, and then the end surface of the threaded barrel 707 is abutted against the connecting seat 708, thereby locking the screw rod 706. It is easy to understand that the threaded barrel 707 abuts against the connecting seat 708, which, on the one hand, limits the rotation of the screw rod 706, and on the other hand, tightens the first spring sheet 703 and the second spring sheet 704 to tighten the oil tank. When disassembling the oil tank, it is only necessary to withdraw the threaded barrel 707 a little without affecting the screw rod 706 from the notch 7081, which makes disassembly and assembly more convenient.

[0030] It is easy to understand that in other embodiments, the connecting seat 708 can of course be disposed on the second elastic piece 704 , and the rotating rod 705 and the screw rod 706 can be disposed on the first elastic piece 703 .

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A UAV hydraulic system test bench, comprising a test bench body (2), characterized in that: It also comprises an oil receiving pan (1), which is in the shape of a box with an open top. The test bench body (2) is located inside the oil receiving pan (1), and a plurality of support blocks are provided at the bottom of the test bench body (2). The support blocks are fixedly connected to the inner bottom surface of the oil receiving pan (1).

2. The UAV hydraulic system test bench according to claim 1, characterized in that: The test bench body (2) comprises a bench frame (201) and a table top (202); the bench frame (201) is welded from steel sections into a six-sided open rectangular parallelepiped structure; the table top (202) is welded to the top of the bench frame (201); and the support block is welded to the bottom of the bench frame (201).

3. The UAV hydraulic system test bench according to claim 2, characterized in that: The steel section is one or more of C-steel, channel steel, I-steel, and H-steel.

4. The UAV hydraulic system test bench according to claim 1, characterized in that: A support frame (3) is provided on one side of the bottom of the test bench body (2); the support frame (3) is located in the oil receiving pan (1); and a flow simulation system mounting platform (4) and a simulated heat dissipation system mounting plate (5) are provided on the top of the support frame (3).

5. The UAV hydraulic system test bench according to claim 1, characterized in that: A bracket group is provided on the top of the test bench body (2), and the bracket group includes but is not limited to a fuel-hydraulic oil radiator bracket (6), a fuel tank bracket (7), an accumulator-oil filter bracket (8), an oil filter bracket (9), a system accumulator-buffer bottle bracket (10), a safety valve bracket (11), a joint bracket (12), and a pipe clamp bracket (13).

6. The UAV hydraulic system test bench according to claim 5, characterized in that: At least two of the fuel tank brackets (7) are arranged in parallel, and the fuel tank brackets (7) include a support seat (701), an arc-shaped support seat (702), a first elastic sheet (703) and a second elastic sheet (704); the support seat (701) is fixedly connected to the test bench body (2); the arc-shaped support seat (702) is fixedly connected to the support seat (701); one end of the first elastic sheet (703) is fixedly connected to one end of the arc-shaped support seat (702); one end of the second elastic sheet (704) is fixedly connected to the other end of the arc-shaped support seat (702); and the other end of the first elastic sheet (703) is detachably connected to the other end of the second elastic sheet (704).

7. The UAV hydraulic system test bench according to claim 6, characterized in that: One of the first spring piece (703) and the second spring piece (704) is rotatably provided with a rotating rod (705), a screw rod (706) is provided in the middle of the rotating rod (705), and the other is provided with a connecting seat (708), a notch (7081) for accommodating the screw rod (706) is provided on the connecting seat (708), and a threaded barrel (707) is connected to the screw rod (706), and after the screw rod (706) is rotated into the notch (7081), the end surface of the threaded barrel (707) abuts against the connecting seat (708), thereby locking the screw rod (706).

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