CN215944221U - Transmission propulsion system for amphibious vehicle - Google Patents

Abstract

A transmission propulsion system for an amphibious vehicle comprises a power output assembly, a transfer case, a front axle assembly, a rear axle assembly, a water propulsion assembly, a steering engine steering system and a rudder blade, wherein the power output assembly comprises an engine and a gearbox, the gearbox is connected with an input shaft of the transfer case, an output end of the transfer case is connected with the front axle assembly and the rear axle assembly, a power takeoff is arranged at one end of the input shaft of the transfer case and connected with the water propulsion assembly, the front axle assembly is arranged below the power output assembly, the rear axle assembly and the water propulsion assembly are both arranged on one side of the transfer case, which is far away from the power output assembly, the steering engine steering system and the rudder blade are both arranged on one side of the water propulsion assembly, which is far away from the power takeoff, and the steering engine steering system comprises a generator, a generator connecting wire, a storage battery, an electric hydraulic pump station, a manual hydraulic pump, a steering hydraulic oil cylinder and a rudder handle. The advantages are that: the structure is simplified, the volume is reduced, the cost is reduced, and the maintenance is convenient; the safety and the reliability during navigation are guaranteed.

Description

Transmission propulsion system for amphibious vehicle

Technical Field

The utility model belongs to the technical field of special vehicles, and particularly relates to a transmission propulsion system for an amphibious vehicle.

Background

The amphibious vehicle is a multipurpose special vehicle which can be suitable for flexible maneuvering running on land, can be quickly and covertly sailed on water and can stably run in an amphibious boundary environment, has the advantages of multi-environment-crossing quick maneuvering and wide application range, and has great military application value and wide civil prospect. In the aspect of military affairs, in order to meet diversified operation demands of land army, navy amphibious landing and the like in the future in China, the amphibious vehicle can be used as an important component of the whole operation equipment, can be effectively used as an important guarantee for beach landing, island and reef fighting and guard protection, and can also be used as military strength for border river patrol control and construction, and emergency passage and emergency rescue and disaster relief of the inland rivers of the military. The amphibious vehicle can be used as emergency disaster relief equipment for flood disasters, geological disasters and serious river safety accidents in the civil field, and can also play an irreplaceable role. A power system, a transmission system, an operation system, an electric control system and other water navigation auxiliary systems are usually arranged in a vehicle body of the existing amphibious vehicle, and the existing amphibious vehicle mostly adopts a double-motor double-pump power transmission system, namely two sets of separated transmission systems, one set of which is used for land driving and the other set of which is used for water navigation. Technical information about an amphibious vehicle and two sets of separated transmission systems is not known in the published Chinese patent documents, and examples thereof include CN106143028B (a water driving propelling device of the amphibious vehicle), CN110525148A (a dual-engine dual-pump power transmission system of the amphibious vehicle), CN110843438A (a power transmission system and an amphibious vehicle including the power transmission system), and CN212353503U (a transmission system of the amphibious vehicle).

The typical chinese patent document with publication number CN212194973U discloses a "transmission system for amphibious vehicle and amphibious vehicle having the same", in which the transmission system for amphibious vehicle comprises: a power assembly, the power assembly comprising: the system comprises a first engine, a second engine and a power battery, wherein the first engine, the second engine and the power battery are all used for providing power; the first overwater transmission branch is used for transmitting power provided by the first engine and/or the power battery to the overwater floating device; a land transmission branch for transmitting power provided by the first engine and/or the power cell to a land walking device; and the second overwater transmission branch is used for transmitting the power provided by the second engine and/or the power battery to the overwater floating device. The technical scheme can enable the amphibious vehicle to have enough power so as to realize the high-speed floating of the amphibious vehicle, but the adopted power assembly comprises the first engine, the second engine and the power battery and forms three transmission branches, the land transmission branch realizes the navigation of the amphibious vehicle on the land, and the first overwater transmission branch and the second overwater transmission branch ensure the navigation of the amphibious vehicle in water, so that the transmission system scheme has the advantages of complex structure, more parts, large occupied space, greatly increased manufacturing cost and no contribution to subsequent maintenance; in addition, the present water floating device for realizing water propulsion and steering of the amphibious vehicle is mostly provided with a water spray pump to realize navigation and steering of the amphibious vehicle, but the water spray pump has a complex structure, high manufacturing precision and high cost, and in addition, because the water and the water environment are complex, fine silt and sundries in the water are easily sucked into the water spray pump to cause the water inlet filtering system of the water spray pump to be blocked, so that the whole water spray pump fails to work, thereby the safety and reliability of the amphibious vehicle in the water can not be guaranteed, and even dangerous accidents can be caused.

In view of the above, there is a need for a reasonable improvement in the structure of the existing amphibious vehicle's powered propulsion system. The technical solutions described below have been created in this context.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic amphibious vehicle which is beneficial to abandoning the prior art that two sets of power propulsion devices are adopted, only a power output assembly of a first engine is arranged to output power, a transfer case is connected to the power output assembly to realize power distribution, thereby ensuring the running requirement of the amphibious vehicle on land or in water, and is beneficial to abandoning the prior art that a transmission system adopts a water pump device to spray water to realize propulsion and steering, and adopts a water propulsion assembly and a steering engine steering system to realize propulsion and steering of the amphibious vehicle in water, thereby realizing structural simplification and greatly ensuring the safety and reliability of running, and is convenient for ensuring that a user can realize steering of the amphibious vehicle in water by operating a manual hydraulic pump through arranging an electric hydraulic pump station and a manual hydraulic pump station in the steering engine steering system when the electric hydraulic pump station fails to work, thereby further ensuring the safety and reliability of the amphibious vehicle in water navigation To the drive propulsion system of (1).

The utility model aims to accomplish the task by providing a transmission propulsion system for an amphibious vehicle, which comprises a power output assembly, a transfer case, a front axle assembly, a rear axle assembly, a water propulsion assembly, a steering engine steering system and rudder blades, wherein the power output assembly comprises an engine and a gearbox which are arranged on a vehicle body of the amphibious vehicle, a clutch is also connected between the engine and the gearbox, an input shaft is connected on the transfer case, the gearbox is in transmission connection with the input shaft of the transfer case, the output end of the transfer case is in transmission connection with the front axle assembly and the rear axle assembly respectively, a power takeoff is connected at one end of the input shaft of the transfer case, which is far away from the gearbox, the output end of the power takeoff can be in transmission connection with the water propulsion assembly, the front axle assembly is arranged at a position corresponding to the lower position of the power output assembly, the rear axle assembly and the water propulsion assembly are both positioned at the other side position of the transfer case far away from the power output assembly, the steering engine steering system and the rudder blade are both arranged at one side position of the amphibious vehicle body corresponding to the water propulsion assembly far away from the power takeoff, the steering engine steering system comprises a generator, a generator connecting wire, a storage battery, an electric hydraulic pump station, a manual hydraulic pump, a steering hydraulic cylinder and a rudder handle, the generator is electrically connected with the storage battery through the generator connecting wire, the engine of the power output assembly can drive the generator to operate and charge the storage battery, the storage battery is electrically connected with the electric hydraulic pump station, a piston rod is inserted into the cylinder body of the steering hydraulic cylinder, and the electric hydraulic pump station can be communicated with the steering hydraulic cylinder pipeline and drive the piston rod of the steering hydraulic cylinder to do telescopic motion, and the piston rod of the hydraulic steering oil cylinder is connected with the rudder stock and can drive the rudder stock to move, the rudder stock is connected with the rudder blade, the rudder stock can drive the rudder blade to rotate so as to realize the steering of the whole amphibious vehicle in water, and when the electric hydraulic pump station fails, the manual hydraulic pump can be communicated with the hydraulic steering oil cylinder to realize a pipeline and drive the piston rod of the hydraulic steering oil cylinder to do telescopic motion so as to drive the rudder blade to rotate.

In a specific embodiment of the utility model, a front axle assembly output shaft and a rear axle assembly output shaft are connected to the output end of the transfer case, the front axle assembly comprises a front axle transmission shaft, the rear axle assembly also comprises a rear axle transmission shaft, the front axle assembly output shaft of the transfer case is in transmission connection with the front axle transmission shaft, the transfer case can distribute the power of the power output assembly to the front axle assembly through the transmission of the front axle assembly output shaft and the front axle transmission shaft, the rear axle assembly output shaft of the transfer case is in transmission connection with the rear axle transmission shaft, and similarly, the transfer case can distribute the power of the power output assembly to the rear axle assembly through the transmission of the rear axle assembly output shaft and the rear axle transmission shaft.

In another specific embodiment of the utility model, the above-water propulsion assembly comprises a propeller transmission shaft, a propeller transmission case, a stern shaft and a propeller, the propeller transmission shaft is in transmission connection with the output end of the power takeoff of the transfer case, the output end of the propeller transmission shaft is in transmission connection with the propeller transmission case, the propeller transmission shaft can transmit the power of the power takeoff to the propeller transmission case, the stern shaft is in transmission connection with the output end of the propeller transmission case, and the propeller is arranged at the tail end of the stern shaft.

In another specific embodiment of the utility model, a cylinder oil inlet and a cylinder oil return opening are arranged on the cylinder body of the steering hydraulic cylinder of the steering engine steering system at intervals, an oil inlet pipe and an oil return pipe are arranged on the outer surface of the cylinder body of the steering hydraulic cylinder, the oil inlet pipe is communicated with the oil inlet of the cylinder, an electric oil inlet branch and a manual oil inlet branch are connected to one end part of the oil inlet pipe, which is far away from the steering hydraulic cylinder, a four-way joint of the oil inlet pipe is arranged at the joint of the oil inlet pipe, the electric oil inlet branch and the manual oil inlet branch, the electric oil inlet branch is communicated with the oil outlet end of the electric hydraulic pump station, and the manual oil inlet branch is communicated with the oil outlet end of the manual hydraulic pump; the oil return pipe is then put through with the hydro-cylinder oil return opening, and the one end tip of keeping away from the helm-steering hydraulic cylinder at this oil return pipe is connected with electronic branch road and manual branch road of producing oil equally, and is provided with an oil return pipe cross joint at this oil return pipe and electronic branch road and manual branch road junction of producing oil, electronic branch road of producing oil with the intercommunication is realized to the oil feed end of electronic hydraulic power unit, and manual branch road of producing oil then with the oil feed end of manual hydraulic pump realizes the intercommunication.

In another specific embodiment of the present invention, an oil inlet pipe pressure gauge is further disposed on the oil inlet pipe, and the oil inlet pipe pressure gauge is connected to the oil inlet pipe four-way joint; and an oil return pipe pressure gauge is also arranged on the oil return pipe and is connected with the four-way joint of the oil return pipe.

In a further specific embodiment of the present invention, an operating hand wheel is disposed on a manual hydraulic pump of the steering engine steering system, and an oil feeding cup is further connected to a pump body of the manual hydraulic pump.

In a further specific embodiment of the utility model, a rudder angle sensor capable of sensing the rotation angle of the rudder handle is arranged on the rudder handle of the steering system of the steering engine.

One of the technical effects of the technical scheme provided by the utility model is that the technical scheme adopts a set of integrated power output assembly as a power source, the power output assembly is only provided with an engine for outputting power, a transfer case is connected to a transmission of the power output assembly, the transfer case can transmit the power to a front axle assembly and a rear axle assembly to realize the driving of the amphibious vehicle to meet the requirement of the amphibious vehicle on land, in addition, a power takeoff is connected at the tail part of an input shaft of the transfer case, when the amphibious vehicle sails in water, the power takeoff can be in transmission connection with a water propulsion assembly and transmits the power of the transfer case to the water propulsion assembly to realize the sailing of the amphibious vehicle in water, and the running requirement of the amphibious vehicle on land or in water can be ensured through the control of the transfer case, compared with the existing transmission system adopting two sets of power output sources, the technical scheme greatly simplifies the whole structure, reduces the occupied volume, can effectively reduce the production cost and is convenient for subsequent maintenance; secondly, the water propulsion assembly is compact in structure, the propeller is used as a driving part for sailing in water, steering operation of the amphibious vehicle in water is achieved through a steering engine steering system, and compared with a propulsion mode that a water pump device is used for spraying water to achieve propulsion and steering in the existing transmission system, the water propulsion assembly is simple and durable in structure and can effectively guarantee safety and reliability of the amphibious vehicle in sailing; thirdly, an electric hydraulic pump station and a manual hydraulic pump station are arranged in a steering engine steering system, the electric hydraulic pump station is driven by electric energy stored by a storage battery to realize rotation of rudder blades and steering of the amphibious vehicle in water, due to complexity of an underwater environment, when the electric hydraulic pump station fails to work, a user can manually control the rudder blades and the amphibious vehicle to steer in water through the manual hydraulic pump, safety and reliability of the amphibious vehicle in water navigation are effectively guaranteed, and dangerous situations are avoided.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a top view of the embodiment shown in fig. 1.

Fig. 3 is a schematic structural diagram of a steering engine steering system according to the present invention.

In the figure: 1. the power output assembly, 11, an engine, 12, a gearbox and 13, a clutch;

2. transfer case, 21 power takeoff;

3. front axle assembly, 31, front axle drive shaft;

4. rear axle assembly, 41 rear axle transmission shaft;

5. the marine propulsion assembly comprises a marine propulsion assembly, 51 propeller transmission shafts, 52 propeller transmission boxes, 53 stern shafts and 54 propellers;

6. the steering engine comprises a steering engine steering system, a generator 61, a generator 62, a generator connecting wire, a storage battery 63, a storage battery 64, an electric hydraulic pump station 65, a manual hydraulic pump 651, an operating hand wheel 652, an oil supplement cup 66, a steering hydraulic oil cylinder 661, a piston rod 662, an oil cylinder oil inlet, 663, an oil cylinder oil return port 664, an oil inlet pipe 6641, an electric oil inlet branch, 6642, a manual oil inlet branch, 6643, an oil inlet pipe four-way joint, 6644, an oil inlet pipe pressure gauge, 665, an oil return pipe 6651, an electric oil outlet branch, 6652, a manual oil outlet branch, 6653, an oil return pipe four-way joint, 6654, an oil return pipe pressure gauge, 67, a steering handle 671 and a steering angle sensor;

7. a rudder blade.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the following detailed description is given by way of examples, but the description of the examples is not intended to limit the scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in substance, should be considered as the scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are exemplified by the position state of the legend being described, and thus it should not be understood as a particular limitation to the technical solution provided by the present invention.

Referring to fig. 1 to 3, a transmission propulsion system for an amphibious vehicle is shown, which includes a power output assembly 1, a transfer case 2, a front axle assembly 3, a rear axle assembly 4, a marine propulsion assembly 5, a steering engine steering system 6 and a rudder blade 7, wherein the power output assembly 1 includes an engine 11 and a gearbox 12 mounted on a vehicle body of the amphibious vehicle, a clutch 13 is further connected between the engine 11 and the gearbox 12, the transfer case 2 is connected with an input shaft, the gearbox 12 is in transmission connection with the input shaft of the transfer case 2, an output end of the transfer case 2 is in transmission connection with the front axle assembly 3 and the rear axle assembly 4 respectively and can drive the two, an end of the input shaft of the transfer case 2 far away from the gearbox 12 is connected with a power takeoff 21, an output end of the power takeoff 21 can be in transmission connection with the marine propulsion assembly 5, the front axle assembly 3 is arranged at the lower position corresponding to the power output assembly 1, the rear axle assembly 4 and the marine propulsion assembly 5 are both positioned at the other side position of the transfer case 2 far away from the power output assembly 1, and the steering engine 6 and the rudder blade 7 are both arranged at the position of one side of the amphibious vehicle body corresponding to the marine propulsion assembly 5 far away from the power takeoff 21; the transfer case 2 is electrically connected with a control system of the amphibious vehicle, when the amphibious vehicle needs to run on the road, an electromagnetic switch of a power takeoff 21 of the transfer case 2 is disconnected, the power takeoff 21 is disconnected with the waterborne propulsion assembly 5, power output by the power output assembly 1 can be distributed and transmitted through the transfer case 2, so that the front axle assembly 3 and the rear axle assembly 4 drive the amphibious vehicle to run on the land, and when the amphibious vehicle needs to be sailed in water, the power takeoff 21 of the transfer case 2 is in transmission connection with the waterborne propulsion assembly 5 and can transmit the power of the transfer case 2 to the waterborne propulsion assembly 5, so that the amphibious vehicle is driven to sail in water.

Referring to fig. 3, the steering engine 6 includes a generator 61, a generator connecting wire 62, a storage battery 63, an electric hydraulic pump station 64, a manual hydraulic pump 65, a steering hydraulic cylinder 66 and a tiller 67, the generator 61 and the storage battery 63 are electrically connected by the generator connecting wire 62, the engine 11 of the power output assembly 1 can drive the generator 61 to operate and charge the storage battery 63, the storage battery 63 and the electric hydraulic pump station 64 are also electrically connected, a piston rod 661 is inserted into the cylinder of the steering hydraulic cylinder 66, the electric hydraulic pump station 64 can be in pipeline communication with the steering hydraulic cylinder 66 and drive the piston rod 661 of the steering hydraulic cylinder 66 to move telescopically, and the piston rod 661 of the steering hydraulic cylinder 66 is connected with the tiller 67 and can drive the tiller 67 to move, the aforesaid tiller 67 and rudder blade 7 interconnect, and this tiller 67 can drive rudder blade 7 and rotate to realize the whole turning in aqueous of amphibious car, and when electric hydraulic power unit 64 work became invalid, aforesaid manual hydraulic pump 65 can realize the pipeline intercommunication with aforementioned helm steering hydraulic cylinder 66 and drive this helm steering hydraulic cylinder 66's piston rod and make concertina movement thereby drive rudder blade 7 and rotate.

In this embodiment, the engine 11 in the power output assembly 1 is a diesel engine, and the transmission 12 of the power output assembly 1 has nine forward gears and one reverse gear, different gears can enable the engine 11 to fully output under different working conditions and meet the operation requirements of the amphibious vehicle under different working conditions, and the clutch 13 can realize the separation of the engine 11 and the transmission 12 when the transmission 12 changes the gear.

Further, a front axle assembly output shaft and a rear axle assembly output shaft are connected to the output end of the transfer case 2, the front axle assembly 3 includes a front axle transmission shaft 31, the rear axle assembly 4 also includes a rear axle transmission shaft 41, the front axle assembly output shaft of the transfer case 2 is in transmission connection with the front axle transmission shaft 31, the transfer case 2 can distribute the power of the power output assembly 1 to the front axle assembly 3 through the transmission of the front axle assembly output shaft and the front axle transmission shaft 31, the rear axle assembly output shaft of the transfer case 2 is in transmission connection with the rear axle transmission shaft 41, and similarly, the transfer case 2 can distribute the power of the power output assembly 1 to the rear axle assembly 4 through the transmission of the rear axle assembly output shaft and the rear axle transmission shaft 41.

Further, the above-mentioned marine propulsion assembly 5 includes a propeller transmission shaft 51, a propeller transmission case 52, a stern shaft 53 and a propeller 54, the above-mentioned propeller transmission shaft 51 is in transmission connection with the output end of the power takeoff 21 of the above-mentioned transfer case 2, the output end of the above-mentioned propeller transmission shaft 51 is in transmission connection with the propeller transmission case 52, and the above-mentioned propeller transmission shaft 51 can transmit the power of the power takeoff 21 to the propeller transmission case 52, and the above-mentioned stern shaft 53 is in transmission connection with the output end of the propeller transmission case 52, and the above-mentioned propeller 54 is installed at the tail end of the stern shaft 53.

Referring to fig. 3, a cylinder oil inlet 662 and a cylinder oil return port 663 are arranged on the cylinder body of the steering hydraulic cylinder 66 of the steering engine steering system 6 at intervals, an oil inlet pipe 664 and an oil return pipe 665 are arranged on the outer surface of the cylinder body of the steering hydraulic cylinder 66, the oil inlet pipe 664 is communicated with the cylinder oil inlet 662, an electric oil inlet branch 6641 and a manual oil inlet branch 6642 are connected to one end of the oil inlet pipe 664 away from the steering hydraulic cylinder 66, an oil inlet pipe four-way joint 6643 is arranged at the connection between the oil inlet pipe 664 and the electric oil inlet branch 6641 as well as the manual oil inlet branch 6642, the electric oil inlet branch 6641 is communicated with the oil outlet of the electric hydraulic pump station 64, the manual oil inlet branch 6642 is communicated with the oil outlet of the manual hydraulic pump 65, and the oil inlet pipe four-way joint 6643 is electrically connected with the control system of the amphibious vehicle, when the electric hydraulic pump station 64 works, the oil inlet pipe four-way joint 6643 can realize the conduction between the electric oil inlet branch 6641 and the oil inlet pipe 664, and realize the disconnection between the manual oil inlet branch 6642 and the oil inlet pipe 664, and when the electric hydraulic pump station 64 fails and the steering of the rudder blade 7 needs to be realized through the manual hydraulic pump 65, the oil inlet pipe four-way joint 6643 can realize the disconnection between the electric oil inlet branch 6641 and the oil inlet pipe 664, and realize the conduction between the manual oil inlet branch 6642 and the oil inlet pipe 664; the oil return pipe 665 is connected to the oil return port 663, an end of the oil return pipe 665, which is away from the steering hydraulic cylinder 66, is also connected to the electric oil outlet branch 6651 and the manual oil outlet branch 6652, and a return pipe four-way joint 6653 is provided at a connection between the oil return pipe 665 and the electric oil outlet branch 6651 and the manual oil outlet branch 6652, the electric oil outlet branch 6651 is communicated with an oil inlet end of the electric hydraulic pump station 64, the manual oil outlet branch 6652 is communicated with an oil inlet end of the manual hydraulic pump 65, similarly, the return pipe four-way joint 6653 is electrically connected to a control system of an amphibious vehicle, when the electric hydraulic pump station 64 is in normal operation, the return pipe four-way joint 6653 can realize the conduction between the electric oil outlet branch 6651 and the oil return pipe 665, and realize the disconnection between the manual oil outlet branch 6652 and the oil return pipe 665, and when the electric hydraulic pump station 64 is out of work and needs to realize steering of the steering vane 7 by operating the manual hydraulic pump 65, the oil return pipe four-way joint 6653 can realize disconnection between the electric oil outlet branch 6651 and the oil return pipe 665, and realize conduction between the manual oil outlet branch 6652 and the oil return pipe 665.

In this embodiment, an oil inlet pipe pressure gauge 6644 is further disposed on the oil inlet pipe 664, and the oil inlet pipe pressure gauge 6644 is connected to the oil inlet pipe four-way joint 6643; an oil return pipe pressure gauge 6654 is also provided on the oil return pipe 665, and the oil return pipe pressure gauge 6654 is connected to the oil return pipe four-way joint 6653.

Preferably, an operating hand wheel 651 is arranged on the manual hydraulic pump 65 of the steering engine steering system 6, and a pump body of the manual hydraulic pump 65 is further communicated with an oil supplement cup 652 through an oil pipe, the oil supplement cup 652 is arranged, so that the oil in the manual hydraulic pump 62 can be conveniently added, and a user can set an oil level mark on the oil supplement cup 652, so that the oil quantity can be conveniently detected.

Preferably, a rudder angle sensor 671 capable of sensing the rotation angle of the rudder handle 67 is arranged on the rudder handle 67 of the steering engine steering system 6.

Please refer to fig. 1 to fig. 3, which briefly describe the technical principle of the technical solution provided by the present invention: the transmission propulsion system has four different working modes which are respectively as follows: land highway mode, land cross-country mode, float-over embankment mode, aquatic navigation mode.

When the amphibious vehicle runs on land, the transmission propulsion system can be switched between a land on-road mode and a land off-road mode, in the two states, the electromagnetic switch of the power takeoff 21 of the transfer case 2 is disconnected, the power takeoff 21 is disconnected from the marine propulsion assembly 5 and power is separated, and the propeller 54 of the marine propulsion assembly 5 does not work. When the transmission propulsion system is in a land highway mode, the output shaft of the front axle assembly of the transfer case 2 is disconnected from the front axle assembly 3, the output shaft of the rear axle assembly is in transmission connection with the rear axle assembly 4, the output shaft of the rear axle assembly transmits power to the rear axle transmission shaft 41, the power is further transmitted through the rear axle transmission shaft 41, so that the rear axle assembly 4 is driven by rear wheels, and when the transmission propulsion system is in a land off-road mode, the output shaft of the front axle assembly and the output shaft of the rear axle assembly of the transfer case 2 are respectively in transmission connection with the front axle assembly 3 and the rear axle assembly 4, so that the power of the power output assembly 1 is driven by the front axle transmission shaft 31 and the rear axle transmission shaft 41, so that the front axle assembly 3 and the rear axle assembly 4 are driven by four wheels, and the amphibious vehicle can run off-road in a complex field environment; when the amphibious vehicle runs on the land and the transmission propulsion system is in a land on-road mode or a land off-road mode, a user changes the gear of the gearbox 12 of the power output assembly 1 according to different environmental requirements and vehicle speed working conditions, so that the transmission propulsion system obtains different speed ratios.

When the transmission propulsion system is in a floating and embarking mode or an underwater navigation mode, an electromagnetic switch of a power takeoff 21 of the transfer case 2 is closed, the power takeoff 21 is in transmission connection with the marine propulsion assembly 5 and can transmit power to the marine propulsion assembly 5, and the marine propulsion assembly 5 rotates. When the amphibious vehicle needs to land from a shoal, the transmission propulsion system is in a floating and landing mode, the output shaft of the front axle assembly and the output shaft of the rear axle assembly of the transfer case 2 are in transmission connection with the front axle assembly 3 and the rear axle assembly 4 respectively, four-wheel drive of the front axle assembly 3 and the rear axle assembly 4 is realized, meanwhile, the power takeoff 21 of the transfer case 2 transmits power to the propeller transmission shaft 51 of the overwater propulsion assembly 5, and transmits the power to the propeller 54 through the transmission of the propeller transmission case 52, so that the propeller 54 rotates, and at the moment, the front axle assembly 3, the rear axle assembly 4 and the propeller 54 work simultaneously to propel the amphibious vehicle, and the landing operation of the amphibious vehicle is realized; when the amphibious vehicle needs to navigate in water, the transmission propulsion system is in a water navigation mode, the output shaft of the front axle assembly and the output shaft of the rear axle assembly of the transfer case 2 are respectively disconnected from the front axle assembly 3 and the rear axle assembly 4, the transfer case 2 is in neutral gear, the front axle assembly 3 and the rear axle assembly 4 do not work, the electromagnetic switch of the power takeoff 21 of the transfer case 2 is closed, the power takeoff 21 can transmit all the power of the transfer case 2 to the water propulsion assembly 5 only, so that the amphibious vehicle can navigate at full speed in water, in addition, in order to meet the requirements of different navigation speeds, a driver can change the gear of the gearbox 12 so as to adapt to the requirements of different working conditions, in addition, when the gearbox 12 is in reverse gear, the propeller 54 of the water propulsion assembly 5 rotates reversely, so that the amphibious vehicle navigates backwards in water.

Referring to fig. 3, the working principle of the steering system 6 of the rudder machine in the technical solution provided by the present invention is briefly described: the steering engine steering system 6 is used as a component of a transmission propulsion system, and can realize rotation of a rudder blade 7 and integral steering of an amphibious vehicle in water, specifically, a belt pulley of an engine 11 of a power output assembly 1 drives a generator 61 to operate, the generator 61 can charge a storage battery 63, when the amphibious vehicle needs to be steered in water and normally operates in an electric hydraulic pump station 64, the oil inlet pipe four-way joint 6643 can realize conduction of an electric oil inlet branch 6641 and an oil inlet pipe 664 and disconnection of a manual oil inlet branch 6642 and the oil inlet pipe 664 under the control of a control system of the amphibious vehicle, the oil return pipe four-way joint 6653 can realize conduction of an electric oil outlet branch 6651 and an oil return pipe 665 and disconnection of the manual oil outlet branch 6652 and the oil return pipe 665, and electric energy stored in the storage battery 63 can be supplied to the electric hydraulic pump station 64 to work to generate hydraulic pressure, at the moment, the hydraulic pressure of the electric hydraulic pump station 64 drives the piston rod 661 of the steering hydraulic cylinder 66 to perform telescopic motion, the piston rod 661 further drives the tiller 67 connected with the piston rod 661, and the tiller 67 finally drives the rudder blade 7 to rotate, so that the steering operation of the amphibious vehicle during navigation in water is realized; when the electric hydraulic pump station 64 fails, under the control of a control system of the amphibious vehicle, the oil inlet pipe four-way joint 6643 can realize the conduction between the manual oil inlet branch 6642 and the oil inlet pipe 664 and the disconnection between the electric oil inlet branch 6641 and the oil inlet pipe 664, while the oil return pipe four-way joint 6653 can realize the conduction between the manual oil outlet branch 6652 and the oil return pipe 665, and realize the disconnection between the electric oil outlet branch 6651 and the oil return pipe 665, at this time, a user can enable the manual hydraulic pump 65 to generate hydraulic pressure by operating the hand wheel 651 of the manual hydraulic pump 65 so as to drive the piston rod of the steering hydraulic cylinder 66 to perform telescopic motion, thereby realizing the rotation of the rudder blade 7, further realizing the steering operation of the amphibious vehicle in water when the electric hydraulic pump station 64 fails, and effectively ensuring the reliability of the operation of the amphibious vehicle.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the utility model task and truly realizes the technical effects of the applicant in the technical effect column.

Claims (7)

1. A transmission propulsion system for an amphibious vehicle is characterized by comprising a power output assembly (1), a transfer case (2), a front axle assembly (3), a rear axle assembly (4), a water propulsion assembly (5), a steering engine steering system (6) and rudder blades (7), wherein the power output assembly (1) comprises an engine (11) and a gearbox (12) which are arranged on a vehicle body of the amphibious vehicle, a clutch (13) is connected between the engine (11) and the gearbox (12), an input shaft is connected onto the transfer case (2), the input shaft is in transmission connection with an output end of the power output assembly (1), an output end of the transfer case (2) is in transmission connection with the front axle assembly (3) and the rear axle assembly (4) respectively, and one end, far away from the gearbox (12), of the input shaft of the transfer case (2) is connected with a power takeoff (21), the output end of the power takeoff (21) can be in transmission connection with the water propulsion assembly (5), the front axle assembly (3) is arranged at the position below the power output assembly (1), the rear axle assembly (4) and the water propulsion assembly (5) are both located at the position of the transfer case (2) on the other side far away from the power output assembly (1), the steering engine steering system (6) and the rudder blade (7) are both arranged at the position of the amphibious vehicle body on one side far away from the power takeoff (21) and corresponding to the water propulsion assembly (5), the steering engine steering system comprises a generator (61), a generator connecting wire (62), a storage battery (63), an electric hydraulic pump station (64), a manual hydraulic pump (65), a steering hydraulic cylinder (66) and a rudder handle (67), the generator (61) and the storage battery (63) are electrically connected through a generator connecting wire (62), an engine (11) of the power output assembly (1) can drive a generator (61) to operate and charge a storage battery (63), the storage battery (63) and an electric hydraulic pump station (64) are electrically connected, a piston rod (661) is inserted into a cylinder body of the steering hydraulic cylinder (66), the electric hydraulic pump station (64) can be communicated with the steering hydraulic cylinder (66) through a pipeline and drives the piston rod (661) of the steering hydraulic cylinder (66) to do telescopic motion, the piston rod (661) of the steering hydraulic cylinder (66) is connected with a tiller (67) and can drive the tiller (67) to move, the tiller (67) is connected with the rudder blade (7), and the tiller (67) can drive the rudder blade (7) to rotate so as to realize the steering of the amphibious vehicle integrally in water, when the electric hydraulic pump station (64) fails, the manual hydraulic pump (65) can be communicated with the steering hydraulic oil cylinder (66) through a pipeline and drives a piston rod (661) of the steering hydraulic oil cylinder (66) to do telescopic motion so as to drive the rudder blade (7) to rotate.

2. A drive-propulsion system for an amphibious vehicle according to claim 1, characterised in that a front axle assembly output shaft and a rear axle assembly output shaft are connected to the output end of the transfer case (2), that the front axle assembly (3) comprises a front axle drive shaft (31), that the rear axle assembly (4) likewise comprises a rear axle drive shaft (41), that the front axle assembly output shaft of the transfer case (2) is in driving connection with the front axle drive shaft (31), and that the transfer case (2) is capable of distributing the power of the power output assembly (1) to the front axle assembly (3) by driving the front axle assembly output shaft with the front axle drive shaft (31), and that the rear axle assembly output shaft of the transfer case (2) is in driving connection with the rear axle drive shaft (41), and that the transfer case (2) is capable of distributing the power of the power output assembly (1) to the rear axle by driving the rear axle assembly output shaft with the rear axle drive shaft (41), and that the transfer case (2) is capable of distributing the power of the power output shaft with the rear axle assembly (1) And an assembly (4).

3. A drive-by-drive propulsion system for an amphibious vehicle according to claim 1, characterised in that said marine propulsion assembly (5) comprises a propeller drive shaft (51), a propeller drive box (52), a stern shaft (53) and a propeller (54), said propeller drive shaft (51) being in drive connection with the output of the power take-off (21) of said transfer box (2), and the output of the propeller drive shaft (51) being in drive connection with the propeller drive box (52), and the propeller drive shaft (51) being capable of transferring the power of the power take-off (21) to the propeller drive box (52), and said stern shaft (53) being in drive connection with the output of the propeller drive box (52), said propeller (54) being mounted at the rear end of the stern shaft (53).

4. The transmission propulsion system for the amphibious vehicle as claimed in claim 1, wherein cylinder oil inlets (662) and cylinder oil return ports (663) are arranged on the cylinder body of a steering hydraulic cylinder (66) of the steering engine steering system (6) at intervals, an oil inlet pipe (664) and an oil return pipe (665) are arranged on the outer surface of the cylinder body of the steering hydraulic cylinder (66), the oil inlet pipe (664) is communicated with the cylinder oil inlets (662), an electric oil inlet branch (6641) and a manual oil inlet branch (6642) are connected to the end portion of the oil inlet pipe (664) far away from the steering hydraulic cylinder (66), an oil inlet pipe four-way joint (6643) is arranged at the connection of the oil inlet pipe (664) with the electric oil inlet branch (6641) and the manual oil inlet branch (6642), the electric oil inlet branch (6641) is communicated with the oil outlet end of the electric hydraulic pump station (64), the manual oil inlet branch (6642) is communicated with the oil outlet end of the manual hydraulic pump (65); oil return pipe (665) then switch on with hydro-cylinder oil return opening (663), and the one end tip of keeping away from helm steering hydraulic cylinder (66) at this oil return pipe (665) is connected with electronic branch of producing oil (6651) and manual branch of producing oil (6652) equally, and is provided with an oil return pipe four way connection (6653) at this oil return pipe (665) and electronic branch of producing oil (6651) and manual branch of producing oil (6652) junction, electronic branch of producing oil (6651) with the oil feed end of electronic hydraulic pump station (64) realizes the intercommunication, and manual branch of producing oil (6652) then with the oil feed end of manual hydraulic pump (65) realizes the intercommunication.

5. A propulsion system according to claim 4, characterised in that an inlet manifold pressure gauge (6644) is provided in the inlet manifold (664), and the inlet manifold pressure gauge (6644) is connected to the inlet manifold four-way joint (6643); an oil return pipe pressure gauge (6654) is also arranged on the oil return pipe (665), and the oil return pipe pressure gauge (6654) is connected with the oil return pipe four-way joint (6653).

6. A transmission propulsion system for an amphibious vehicle as claimed in claim 1, characterised in that an operating hand wheel (651) is provided on a manual hydraulic pump (65) of the steering engine steering system (6), and an oil compensating cup (652) is connected to the pump body of the manual hydraulic pump (65).

7. A drive propulsion system for an amphibious vehicle according to claim 1, characterised in that a rudder angle sensor (671) capable of sensing the angle of rotation of the rudder handle (67) is provided on the rudder handle (67) of the steering engine steering system (6).

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