A soil trough test platform suitable for a screw propulsion chassis

Abstract

This invention discloses a soil trough experimental platform suitable for a helical propulsion chassis, comprising a main frame, an internal soil trough, and a helical propulsion mechanism. The helical propulsion mechanism includes a mounting plate slidably connected to the main frame, and a main panel inside the main frame, connected to the mounting plate via a force-transmitting optical shaft. A support plate is fixed to the side of the main panel, a drive motor is mounted on the upper part of the support plate, and a rotating shaft is rotatably connected to the lower part of the support plate via a bearing. The output shaft of the drive motor is connected to the rotating shaft via a chain drive assembly. A horizontal adjustment assembly with a mounting base is located on the lower side of the main panel. This invention facilitates the measurement of the travel parameters of a helical propulsion vehicle in soil, and the device has a high degree of integration and small size, making it more suitable for indoor experimental operations.

Description

Technical Field

[0001] This invention relates to the field of vehicle simulation experiments, and in particular to a soil trough test bench suitable for a helical propulsion chassis. Background Technology

[0002] As a type of chassis with low ground pressure and high thrust, the screw-propelled chassis exhibits high passability in muddy and soft terrain such as silt, swamps, tidal flats, and shallow water. Conventional walking mechanisms cannot consistently provide sufficient thrust when traversing such soft terrain, easily leading to slippage and sinking. Screw-propelled vehicles can easily move in soft and complex soil environments, performing functions such as traction and load-bearing, reducing the risk of manual operation in special environments.

[0003] Studies on the mobility of propulsion vehicles have primarily focused on vehicle structural design and numerical analysis, without sufficient experimental research on different operating parameters and environments for this type of chassis. In reality, the chassis structure of propulsion vehicles is quite complex and large, making indoor experimental operations inconvenient and hindering performance measurements under various conditions and parameters. Summary of the Invention

[0004] The purpose of this invention is to provide a soil trough test platform suitable for a helical propulsion chassis. This invention allows for convenient measurement of the travel parameters of helical propulsion vehicles in soil, and the device has a high degree of integration and small size, making it more suitable for indoor experimental operations.

[0005] The technical solution of the present invention: A soil trough test platform suitable for a helical propulsion chassis includes a main frame, a soil trough is provided inside the main frame, a helical propulsion mechanism is provided inside the main frame, the helical propulsion mechanism includes a mounting plate slidably connected to the main frame, a main panel is provided inside the main frame, and the main panel is connected to the mounting plate through a force transmission optical axis; a support plate is fixed to the side of the main panel, a drive motor is provided on the upper part of the support plate, a rotating shaft is rotatably connected to the lower part of the support plate via a bearing, and the output shaft of the drive motor is connected to the rotating shaft via a chain drive assembly; a horizontal adjustment assembly is provided on the lower side of the main panel, a mounting seat is provided on the horizontal adjustment assembly, a support shaft is rotatably connected to the mounting seat via a bearing, and a helical propulsion cylinder is connected between the support shaft and the rotating shaft.

[0006] In the aforementioned earth trough test bench suitable for a helical propulsion chassis, the chain drive assembly includes a drive sprocket connected to the output shaft of the drive motor, and a driven sprocket connected to the end of the rotating shaft. The drive sprocket and the driven sprocket are connected by a chain drive.

[0007] In the aforementioned earth trough test bench suitable for a helical propulsion chassis, a chain tensioner is provided on the side of the support plate, and the output part of the chain tensioner abuts against the chain.

[0008] In the aforementioned earth trough test bench suitable for a spiral propulsion chassis, the horizontal adjustment component includes a fixing member set at the bottom of the main panel, an adjustment motor set on the side of the fixing member, a lead screw connected to the output shaft of the adjustment motor, a moving block threaded onto the lead screw, and the bottom of the moving block connected to the mounting base via a connecting rod.

[0009] In the aforementioned earth trough test bench suitable for a helical propulsion chassis, a guide rail is provided on the upper side of the main frame, and a slider is slidably sleeved on the guide rail. The slider is connected to the side of the mounting plate.

[0010] In the aforementioned earth trough test bench suitable for a helical propulsion chassis, reinforcing ribs are provided at the edge of the main panel.

[0011] In the aforementioned earth trough test bench suitable for a spiral propulsion chassis, a support is fixedly connected to the upper side of the main panel, and a counterweight is fitted on the surface of the support.

[0012] In the aforementioned earth trough test bench suitable for a helical propulsion chassis, a support frame is provided on one side of the main panel, and the support plate is connected to the support frame.

[0013] In the aforementioned earth trough test bench suitable for a helical propulsion chassis, the helical propulsion cylinder includes a main cylinder body, the surface of which is provided with helical blades, and a rear end cover is provided at the rear end of the main cylinder body, with the end of the rotating shaft connected to the rear end cover; the front end of the main cylinder body is provided with a conical part, the front end of which is provided with a front end cover, and the end of the support shaft is connected to the front end cover.

[0014] In the aforementioned earth trough test bench suitable for a helical propulsion chassis, the lower end of the force transmission optical shaft is fixed to the surface of the main panel, and the mounting plate is sleeved on the force transmission optical shaft through a linear bearing.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention includes a main frame with a soil trough inside and a spiral propulsion mechanism inside. The spiral propulsion mechanism includes a mounting plate slidably connected to the main frame, and a main panel inside the main frame, connected to the mounting plate via a force-transmitting optical shaft. A support plate is fixed to the side of the main panel, a drive motor is mounted on the upper part of the support plate, and a rotating shaft is rotatably connected to the lower part of the support plate via a bearing. The output shaft of the drive motor is connected to the rotating shaft via a chain drive assembly. A horizontal adjustment assembly is located on the lower side of the main panel, with a mounting base on the horizontal adjustment assembly. A support shaft is rotatably connected to the mounting base via a bearing, and a spiral propulsion cylinder is connected between the support shaft and the rotating shaft. In use, the drive motor drives the rotating shaft to rotate, which in turn drives the spiral propulsion cylinder to rotate, causing the spiral propulsion mechanism to move forward in the soil. This facilitates the measurement of the travel parameters of the spiral propulsion vehicle in the soil. Furthermore, the device is centrally installed inside the main frame, resulting in high integration and a small size, making it more suitable for indoor experimental operations.

[0017] 2. In this invention, the horizontal adjustment component includes a fixing member located at the bottom of the main panel. An adjustment motor is mounted on the side of the fixing member. The output shaft of the adjustment motor is connected to a lead screw, and a moving block is threaded onto the lead screw. The bottom of the moving block is connected to the mounting base via a connecting rod. Before installing the helical propulsion cylinder, the adjustment motor can be started to rotate the lead screw, thereby moving the moving block. The moving block moves the mounting base via the connecting rod, allowing adjustment of the distance between the support shaft and the rotating shaft. This facilitates the installation of helical propulsion cylinders of different lengths, enabling the measurement of the propulsion performance of helical propulsion vehicle chassis with different parameters.

[0018] 3. In this invention, a support is fixedly connected to the upper side of the main panel, and a counterweight is fitted onto the surface of the support. During the experiment, the movement of the screw propulsion mechanism under different loads can be simulated by changing the number of counterweights on the support, thereby making the experimental data richer and the results more accurate.

[0019] 4. In this invention, the main panel is connected to the mounting plate via a force transmission optical shaft. The lower end of the force transmission optical shaft is fixed to the surface of the main panel. The mounting plate is sleeved on the force transmission optical shaft via a linear bearing. In actual operation, the distance between the main panel and the mounting plate can be adjusted by the linear bearing, thereby adjusting the depth of the spiral propulsion mechanism in the soil trough, conducting experiments at different depths, and thus obtaining more comprehensive experimental data.

[0020] 5. In this invention, the main panel is widened and two spiral propulsion cylinders are set below the main panel, and corresponding drive devices and horizontal adjustment components are provided, which is closer to the chassis form of actual spiral propulsion vehicles, making the experimental data more representative. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the spiral propulsion mechanism in this invention;

[0023] Figure 3 This is a schematic diagram of the spiral propulsion mechanism from another perspective in this invention;

[0024] Figure 4 This is a schematic diagram of the horizontal adjustment component in this invention;

[0025] Figure 5 This is a schematic diagram of the chain drive assembly in this invention;

[0026] Figure 6 This is a schematic diagram of the structure of the spiral propulsion cylinder in this invention;

[0027] Figure 7 This is a schematic diagram of the spiral propulsion mechanism in Embodiment 2 of the present invention.

[0028] The labels in the attached diagram are as follows: 1-Main frame; 2-Soil trough; 3-Guide rail; 4-Mounting plate; 5-Force transmission optical axis; 6-Main panel; 7-Spiral propulsion cylinder; 701-Main cylinder body; 702-Conical part; 703-Rear end cover; 704-Spiral blade; 705-Front end cover; 8-Slider; 9-Support; 10-Counterweight block; 11-Screw rod; 12-Fixing component; 13-Adjusting motor; 14-Moving block; 15-Mounting base; 16-Connecting rod; 17-Drive motor; 18-Support plate; 19-Chain; 20-Chain tensioner; 21-Support shaft; 22-Support frame; 23-Reinforcing rib; 24-Driven sprocket; 25-Rotating shaft; 26-Driving sprocket. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0030] Example 1: A soil trough test platform suitable for a screw propulsion chassis, as shown in the attached diagram. Figure 1 As shown, it includes a main frame 1, an earth trough 2 inside the main frame 1, and a spiral propulsion mechanism inside the main frame 1, as shown in the attached diagram. Figure 2 and attached Figure 3 As shown, the spiral propulsion mechanism includes a mounting plate 4 that is slidably connected to the main frame 1. Specifically, a guide rail 3 is provided on the upper side of the main frame 1, and a slider 8 is slidably sleeved on the guide rail 3. The slider 8 is connected to the side of the mounting plate 4.

[0031] The main frame 1 houses a main panel 6, which is connected to a mounting plate 4 via a force-transmitting optical shaft 5. The lower end of the force-transmitting optical shaft 5 is fixed to the surface of the main panel 6. The mounting plate 4 is mounted on the force-transmitting optical shaft 5 via a linear bearing. In actual operation, the distance between the main panel 6 and the mounting plate 4 can be adjusted using the linear bearing, thereby adjusting the depth of the spiral propulsion mechanism within the soil trough 2 to conduct experiments at different depths and obtain more comprehensive experimental data. Reinforcing ribs 23 are provided at the edges of the main panel 6. To reduce the overall size and weight of the device, the main panel 6 is relatively thin, approximately 10mm, and has a large lateral span. During operation, the spiral propulsion mechanism will experience a certain degree of bending force on the main panel 6. Therefore, installing reinforcing ribs 23 improves the bending strength of the main panel 6.

[0032] A support plate 18 is fixed to the side of the main panel 6, and a support frame 22 is provided on one side of the main panel 6. The support plate 18 is connected to the support frame 22. A drive motor 17 is provided on the upper part of the support plate 18, and a rotating shaft 25 is rotatably connected to the lower part of the support plate 18 via a bearing. The output shaft of the drive motor 17 is connected to the rotating shaft 25 via a chain drive assembly. (See attached diagram for details.) Figure 5 As shown, the chain drive assembly includes a drive sprocket 26 connected to the output shaft of the drive motor 17, and a driven sprocket 24 connected to the end of the rotating shaft 25. The drive sprocket 26 and the driven sprocket 24 are connected by a chain 19. The diameter of the drive sprocket 26 is smaller than that of the driven sprocket 24, which reduces the rotational speed of the rotating shaft 25 and improves the stability of the screw propulsion mechanism during operation. Furthermore, a chain tensioner 20 is provided on the side of the support plate 18. The output of the chain tensioner 20 abuts against the chain 19. The chain tensioner 20 ensures that the chain 19 is always taut, preventing the chain 19 from loosening.

[0033] As attached Figure 4 As shown, a horizontal adjustment assembly is provided on the lower side of the main panel 6. A mounting base 15 is provided on the horizontal adjustment assembly. The horizontal adjustment assembly includes a fixing member 12 provided at the bottom of the main panel 6. An adjustment motor 13 is provided on the side of the fixing member 12. The output shaft of the adjustment motor 13 is connected to a lead screw 11. A moving block 14 is threadedly connected to the lead screw 11. The upper end face of the moving block 14 is in close contact with the lower wall of the main panel 6, so that the moving block 14 can only move horizontally and will not rotate with the rotation of the lead screw 11.

[0034] The bottom of the movable block 14 is connected to the mounting base 15 via a connecting rod 16. A support shaft 21 is rotatably connected to the mounting base 15 via a bearing. A spiral propulsion cylinder 7 is connected between the support shaft 21 and the rotating shaft 25. The spiral propulsion cylinder 7 includes a main cylinder 701, with spiral blades 704 on its surface. A rear end cover 703 is provided at the rear end of the main cylinder 701, and the end of the rotating shaft 25 is connected to the rear end cover 703. The front end of the main cylinder 701 is provided with a conical part 702, which allows the spiral propulsion cylinder 7 to better penetrate and move in the soil. A front end cover 705 is provided at the front end of the conical part 702, and the end of the support shaft 21 is connected to the front end cover 705. Specifically, both the support shaft 21 and the rotating shaft 25 can be connected to the front end cover 705 and the rear end cover 703 respectively via flanges and bolts, facilitating the replacement of the spiral propulsion cylinder 7. In this embodiment, the outer diameter of the helical propulsion cylinder 7 (i.e. the inner diameter of the helical blade 704) is 219 mm, the length is 300 mm, the pitch of the helical blade 704 is 60-100 mm, and the height of the helical blade 704 is 20-50 mm.

[0035] A support 9 is fixedly connected to the upper side of the main panel 6. A counterweight 10 is sleeved on the surface of the support 9. In specific experiments, the movement of the screw propulsion mechanism under different loads can be simulated by changing the number of counterweights 10 on the support 9, thereby making the test data richer and the results more accurate.

[0036] Working principle: During the experiment, the drive motor 17 is started, which drives the drive sprocket 26 to rotate. The drive sprocket 16 drives the driven sprocket 24 to rotate via the chain 19, which in turn drives the rotating shaft 25 to rotate, ultimately causing the screw propulsion cylinder 7 and the support shaft 21 to rotate together. When the screw propulsion cylinder 7 rotates, the helical blades 704 on its surface can drive the screw propulsion mechanism forward within the soil trough 2. During the experiment, the movement of the screw propulsion mechanism in different soil environments can be simulated by changing the soil environment within the soil trough, thereby measuring the propulsion performance of the screw propulsion vehicle chassis under different driving conditions.

[0037] Before installing the screw propeller 7, the adjusting motor 13 can be started to drive the lead screw 11 to rotate, thereby driving the moving block 14 to move. The moving block 14 drives the mounting base 15 to move through the connecting rod 16, which can adjust the distance between the support shaft 21 and the rotating shaft 25, thus facilitating the installation of screw propellers 7 of different lengths, and thus measuring the propulsion performance of screw propulsion vehicle chassis with different models and parameters.

[0038] Example 2: As shown in the attached document Figure 7As shown, based on Embodiment 1, this embodiment widens the main panel 6 and sets two spiral propulsion cylinders 7 below the main panel 6, and correspondingly sets a drive device (drive motor 17 and chain drive assembly) and a horizontal adjustment assembly, which is closer to the chassis form of a spiral propulsion vehicle in reality, making the experimental data more representative.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the scope of the claims of the present invention should be included within the scope of protection of the present invention.

Claims

1. A soil trough test platform suitable for a helical propulsion chassis, comprising a main frame (1), wherein a soil trough (2) is disposed inside the main frame (1), characterized in that: The main frame (1) is equipped with a spiral propulsion mechanism, which includes a mounting plate (4) slidably connected to the main frame (1). The main frame (1) is equipped with a main panel (6), and the main panel (6) is connected to the mounting plate (4) via a force transmission optical shaft (5). A support plate (18) is fixed to the side of the main panel (6). A drive motor (17) is provided on the upper part of the support plate (18). A rotating shaft (25) is rotatably connected to the lower part of the support plate (18) via a bearing. The output shaft of the drive motor (17) is connected to the rotating shaft (25) via a chain drive assembly. A horizontal adjustment assembly is provided on the lower part of the main panel (6). A mounting seat (15) is provided on the horizontal adjustment assembly. A support shaft (21) is rotatably connected to the mounting seat (15) via a bearing. A spiral propulsion cylinder (7) is connected between the support shaft (21) and the rotating shaft (25).

2. The soil trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: The chain drive assembly includes a drive sprocket (26) connected to the output shaft of the drive motor (17), and a driven sprocket (24) connected to the end of the rotating shaft (25). The drive sprocket (26) and the driven sprocket (24) are connected by a chain (19).

3. The soil trough test platform suitable for a screw propulsion chassis according to claim 2, characterized in that: A chain tensioner (20) is provided on the side of the support plate (18), and the output part of the chain tensioner (20) abuts against the chain (19).

4. The soil trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: The horizontal adjustment assembly includes a fixing member (12) located at the bottom of the main panel (6). An adjustment motor (13) is provided on the side of the fixing member (12). The output shaft of the adjustment motor (13) is connected to a lead screw (11). A moving block (14) is threaded onto the lead screw (11). The bottom of the moving block (14) is connected to the mounting base (15) via a connecting rod (16).

5. The soil trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: The upper side of the main frame (1) is provided with a guide rail (3), and a slider (8) is slidably sleeved on the guide rail (3). The slider (8) is connected to the side of the mounting plate (4).

6. The soil trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: The edge of the main panel (6) is provided with reinforcing ribs (23).

7. The earthen trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: A support (9) is fixedly connected to the upper side of the main panel (6), and a counterweight (10) is sleeved on the surface of the support (9).

8. The soil trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: A support frame (22) is provided on one side of the main panel (6), and the support plate (18) is connected to the support frame (22).

9. The soil trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: The spiral propulsion cylinder (7) includes a main cylinder (701), the surface of which is provided with spiral blades (704), and a rear end cover (703) is provided at the rear end of the main cylinder (701). The end of the rotating shaft (25) is connected to the rear end cover (703). The front end of the main cylinder (701) is provided with a conical part (702), and the front end of the conical part (702) is provided with a front end cover (705). The end of the support shaft (21) is connected to the front end cover (705).

10. The soil trough test platform suitable for a screw propulsion chassis according to claim 1, characterized in that: The lower end of the force transmission optical shaft (5) is fixed to the surface of the main panel (6), and the mounting plate (4) is sleeved on the force transmission optical shaft (5) through a linear bearing.

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