Tail plate installation type amphibious vehicle propeller structure

Abstract

The utility model discloses a tail plate installation type amphibious vehicle propeller structure which comprises a propeller, a transmission shaft and an automobile lifting tail plate, and the transmission shaft comprises a fixed part connected with a power system and a movable part connected with the propeller. The fixing part is composed of a vehicle body power output shaft and a vehicle body shaft tube, and a first shifting fork wheel disc is installed on an output side shaft head of the vehicle body power output shaft in a sliding mode through a spline. The transmission shaft movable part consists of a propeller transmission shaft and a propeller transmission shaft tube; a second shifting fork wheel disc which is correspondingly matched with the first shifting fork wheel disc to form linkage connection is slidably mounted on an input side shaft head of the propeller transmission shaft through a spline; and the movable part of the transmission shaft and the propeller are fixed on the automobile lifting tail plate. The movable part of the transmission shaft and the propeller are matched with the automobile lifting tail plate and can be folded to lean against the tail of the automobile, so that collision can be effectively avoided during cross-country driving; and after the propellers are wound underwater during driving in water, the tail plate can be lifted up, so that the propellers are convenient to maintain, and sundries are convenient to remove.

Description

Technical Field

[0001] The utility model relates to a propeller structure of an amphibious vehicle, in particular to a propeller structure of an amphibious vehicle with a tail plate installation type. Background Art

[0002] For existing conventional amphibious vehicles, generally, propellers are installed at the rear of the vehicle to achieve water travel, and generally 1-2 propellers are installed. Affected by the departure angle and off-road performance of the vehicle, the diameter of the installed propeller is generally not greater than 500 mm to avoid being collided and damaged the propeller system in the off-road state. Moreover, in the current installation method, after the propeller is entangled by weeds underwater during long-term water travel, it is necessary to dive for inspection and treatment, which is inconvenient for maintenance and use. And for the existing propellers and installation methods, restricted by the length-width ratio of the vehicle, it is difficult to increase the water travel speed. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the utility model provides an improved propeller structure of an amphibious vehicle with a tail plate installation type. The propeller and the lifting tail plate of the vehicle can be retracted and leaned against the rear of the vehicle, which can effectively avoid collision in the off-road driving state; when the propeller is entangled underwater during water travel, the tail plate can be lifted to facilitate the maintenance of the propeller and the removal of sundries.

[0004] The utility model can be used for the new installation of the propeller system of an amphibious vehicle and the modification of an amphibious vehicle, which is economical and practical.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A propeller structure of an amphibious vehicle with a tail plate installation type includes a propeller (1), a transmission shaft, and a lifting tail plate (4) of the vehicle. The transmission shaft includes a fixed part connected to the power system and a movable part connected to the propeller; the fixed part of the transmission shaft is composed of a vehicle body power output shaft (21) and its vehicle body shaft tube (22), and the vehicle body power output shaft (21) is installed in cooperation with the vehicle body shaft tube (22); the output side shaft head of the vehicle body power output shaft (21) is slidably installed with a first fork wheel disc (31) through splines; the movable part of the transmission shaft is composed of a propeller transmission shaft (23) and a propeller transmission shaft tube (24), the propeller transmission shaft (23) is installed in cooperation with the propeller transmission shaft tube (24), and the input side shaft head of the propeller transmission shaft (23) is slidably installed with a second fork wheel disc (32) corresponding to and forming a linkage connection with the first fork wheel disc (31) through splines; the output side of the propeller transmission shaft (23) is connected to the propeller (1), and the movable part of the transmission shaft and the propeller are fixed on the lifting tail plate (4) of the vehicle.

[0007] For the propeller structure of the tailboard-mounted amphibious vehicle described above, a spring platform (7) that rotates synchronously with the splined shaft head is provided on the output side of the vehicle body power output shaft (21) and the input side of the corresponding propeller transmission shaft (23) to cooperate with the corresponding engagement connection of the first fork wheel disc (31) and the second fork wheel disc (32).

[0008] For the propeller structure of the tailboard-mounted amphibious vehicle described above, a rudder (6) is provided at the front position where the propeller is fixed on the vehicle lift tailboard (4).

[0009] For the propeller structure of the tailboard-mounted amphibious vehicle described above, one propeller is installed, the fixed part of the transmission shaft is installed in the middle of the vehicle body bottom, and the movable part of the transmission shaft and the propeller are correspondingly installed in the middle of the vehicle lift tailboard.

[0010] For the propeller structure of the tailboard-mounted amphibious vehicle described above, two propellers are installed, the fixed parts of the transmission shafts are installed on both sides of the vehicle body bottom, and the movable parts of the transmission shafts and the propellers are correspondingly installed on both sides of the vehicle lift tailboard.

[0011] Advantages of the utility model:

[0012] 1. For the propeller structure of the tailboard-mounted amphibious vehicle of the present utility model, the propeller (movable part of the transmission shaft) and the vehicle lift tailboard can cooperate to fold nearly 90 degrees and lean against the rear of the vehicle, effectively avoiding collision during off-road driving; when driving in water, after the propeller is entangled by weeds underwater, the tailboard can be lifted to facilitate maintenance and debris removal. It is convenient to operate and use, can better take care of the departure angle of the vehicle, ensure good off-road performance, and avoid the propeller being collided in the off-road state.

[0013] 2. For the propeller structure of the tailboard-mounted amphibious vehicle of the present utility model, when driving in water, the vehicle tailboard is lowered, which is equivalent to increasing the vehicle length and the length-width ratio, and is beneficial to improving the water driving speed. After the propeller is entangled underwater, the tailboard can be lifted, and the propeller can be lifted from underwater to the water surface to facilitate maintenance and debris removal.

[0014] 3. For the propeller structure of the tailboard-mounted amphibious vehicle of the present utility model, the design is reasonable and the concept is ingenious. The propeller system adopts a split clutch design. The movable part of the propeller installation is fixed to the vehicle lift tailboard, realizing storage during off-road driving and retraction during debris removal. It rarely increases the hardware cost, realizes function upgrade, is convenient to operate, use and maintain, is economical and practical, and is suitable for new installation of the propeller system of amphibious vehicles and modification of amphibious vehicles. Description of the drawings

[0015] Figure 1 The figure shows a schematic diagram of the propeller structure of the tailboard-mounted amphibious vehicle of the present utility model;

[0016] Figure 2The figure shows the on-land driving state (rear plate retracted) of the propeller structure of the amphibious vehicle with rear plate-mounted of the present utility model;

[0017] Figure 3 The figure shows the in-water driving state (rear plate lowered) of the propeller structure of the amphibious vehicle with rear plate-mounted of the present utility model;

[0018] Figure 4 The figure shows a schematic diagram of two propellers mounted on the rear plate of the amphibious vehicle propeller. Detailed implementation manners

[0019] In order to make the technical concept and advantages for the invention to achieve its invention purpose clearer and more understandable, the technical solutions of the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the following embodiments are only used to explain and illustrate the preferred implementation manners of the present utility model, and should not constitute a limitation to the scope of protection required by the patent of the present utility model. Embodiment

[0020] Refer to Figure 1 , the propeller structure of the amphibious vehicle with rear plate-mounted of the present utility model includes a propeller 1, a transmission shaft, and an automotive lifting rear plate 4. The transmission shaft includes a fixed part connected to the vehicle body power system and a movable part connected to the propeller. The fixed part of the transmission shaft is composed of a vehicle body power output shaft 21 and its vehicle body shaft tube 22. The vehicle body power output shaft 21 is installed in cooperation with the vehicle body shaft tube 22 (the transmission shaft is installed in the vehicle body shaft tube 22 through a bearing 9 and a bearing cover flange 5). The output side shaft head of the vehicle body power output shaft 21 is slidably installed with a first fork wheel disc 31 through a spline 8. The movable part of the transmission shaft is composed of a propeller transmission shaft 23 and a propeller transmission shaft tube 24. The propeller transmission shaft 23 is installed in cooperation with the propeller transmission shaft tube 24 (the propeller transmission shaft is installed in the propeller transmission shaft tube through a bearing and a bearing cover flange). The input side shaft head of the propeller transmission shaft 23 is slidably installed with a second fork wheel disc 32 that forms a linkage connection in correspondence with the first fork wheel disc 31 through a spline 8. The output side of the propeller transmission shaft 23 is connected to the propeller 1. The movable part of the transmission shaft and the propeller connected and installed thereon are fixed to the automotive lifting rear plate 4. The automotive lifting rear plate is hinged to the vehicle body through a hinge connecting member 41. The other end of a piston rod 42 provided on the automotive lifting rear plate 4 is fixedly connected to the vehicle body. The piston rod drives the lifting of the vehicle rear plate through button control.

[0021] The vehicle lifting tailboard is installed at the rear of the amphibious vehicle. The installation position and overall arrangement after the vehicle lifting tailboard fixes the transmission shaft and the propeller satisfy that when the vehicle lifting tailboard 4 is lowered, the second fork wheel disc 32 can be correspondingly engaged and connected with the first fork wheel disc 31 to form an effective transmission connection. In order to enable the first fork wheel disc 31 and the second fork wheel disc 32 to be correspondingly engaged and connected to form an effective transmission connection, a spring platform 7 that rotates synchronously with the spline shaft head is provided on the output side of the vehicle body power output shaft 21 and the input side of the corresponding propeller transmission shaft 23. The function of the spring platform 7 is as follows: when the tailboard is lowered, if the corresponding working surfaces of the first fork wheel disc 31 and the second fork wheel disc 32 are just in the condition of convex touching convex, then at this time the fork wheel disc can move along the spline direction (on the transmission shaft), the spring is compressed, and the fork wheel disc is protected. When the tailboard is lowered in place, at the starting stage of the rotation of the input shaft, as the first fork wheel disc 31 rotates, the corresponding tooth surfaces of the first fork wheel disc 31 and the second fork wheel disc 32 are engaged (the vehicle body power output shaft 21 drives the fork wheel disc to rotate, and the convex on the working surface of the fork wheel disc will rotate into the groove on the working surface of the propeller fork wheel disc). At this time, under the action of the spring, the first fork wheel disc 31 and the second fork wheel disc 32 maintain a tightly engaged state, which can ensure the normal operation of the propeller.

[0022] The propeller structure of the amphibious vehicle with a tailboard-mounted type of the present utility model, the propeller can be one or two. When there is one propeller, the fixed part of the transmission shaft is installed in the middle of the vehicle body bottom, and the movable part of the transmission shaft and the propeller are correspondingly installed in the middle of the vehicle lifting tailboard. As Figure 4 shown, when there are two installed propellers, the fixed part of the transmission shaft is installed on both sides of the vehicle body bottom, and the movable part of the transmission shaft and the propeller are correspondingly installed on both sides of the vehicle lifting tailboard.

[0023] A rudder 6 is provided at the front position of the propeller fixed on the vehicle lifting tailboard 4.

[0024] See Figure 2 , through the vehicle lifting tailboard of the present utility model, the whole propeller (the movable part of the transmission shaft) can be rotated nearly 90 degrees and leaned against the rear of the vehicle, so that the departure angle of the vehicle can be better taken care of, the good cross-country performance of the amphibious vehicle can be guaranteed, and at the same time, the propeller can be avoided from being collided in the cross-country state and the possibility of being damaged by collision can be greatly reduced. As Figure 3 shown, when the amphibious vehicle is traveling in water, the vehicle lifting tailboard is lowered, and the propeller is connected to the vehicle body power system. And when the propeller is entangled underwater, the tailboard can be raised, and the propeller is lifted from underwater to the water surface, which is convenient for inspection, maintenance and debris removal. At the same time, after the tailboard is lowered, it is equivalent to increasing the vehicle length and increasing the length-width ratio, which is beneficial to improving the water travel speed.

[0025] The above is only the preferred embodiment of the present utility model and does not constitute a limitation to the present utility model. Those skilled in the art can make other modifications to the implementation of the present utility model under the guidance of the prior art without creative labor. Any modification made within the spirit and principle of the present utility model or any simple substitution or equivalent replacement using the commonly used technical means in the art shall be included within the protection scope of the present utility model.

Claims

1. A tail-board mounted amphibious vehicle propeller structure, comprising a propeller (1), a transmission shaft and a vehicle lifting tailboard (4), characterized in that: The transmission shaft comprises a fixed portion connected to the power system and a movable portion connected to the propeller; the transmission shaft fixed portion is composed of a vehicle body power output shaft (21) and a vehicle body shaft tube (22), and the vehicle body power output shaft (21) is mounted in cooperation with the vehicle body shaft tube (22); the output side shaft head of the vehicle body power output shaft (21) is slidably mounted on a first fork wheel disc (31) via a spline; the transmission shaft movable portion is composed of a propeller transmission shaft (23) and a propeller transmission shaft tube (24), and the propeller transmission shaft (23) is mounted in cooperation with the propeller transmission shaft tube (24), and the input side shaft head of the propeller transmission shaft (23) is slidably mounted via a spline and is correspondingly matched with the first fork wheel disc (31) to form a second fork wheel disc (32) in linkage connection; the output side of the propeller transmission shaft (23) is connected to a propeller (1), and the transmission shaft movable portion and the propeller are fixed to the vehicle lifting tail plate (4).

2. The tailgate-mounted amphibious vehicle propeller structure according to claim 1, characterized in that: The output side of the vehicle body power output shaft (21) and the input side of the corresponding propeller transmission shaft (23) are provided with a spring platform (7) that rotates synchronously with the spline shaft head to cooperate with the first fork wheel disc (31) and the second fork wheel disc (32) for corresponding engagement connection.

3. The tail-board mounted propeller structure of an amphibious vehicle according to claim 1 or 2, characterized in that: A rudder (6) is provided at the front position of the fixed propeller on the automobile lifting tail plate (4).

4. The tailgate-mounted amphibious vehicle propeller structure according to claim 3, characterized in that: One propeller is installed, a transmission shaft fixed part is installed in the middle of the bottom of the vehicle body, and a transmission shaft movable part and the propeller are correspondingly installed in the middle of the lifting tail plate of the vehicle.

5. The tailgate-mounted amphibious vehicle propeller structure according to claim 3, characterized in that: Two propellers are installed, the fixed parts of the transmission shaft are installed on both sides of the bottom of the vehicle body, and the movable parts of the transmission shaft and the propellers are correspondingly installed on both sides of the lifting tail plate of the vehicle.

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