Teaching practical training vehicle system

Abstract

The invention provides a teaching practical training vehicle system. The teaching practical training vehicle system comprises a frame chassis; the steering system is arranged above the frame chassis and comprises a steering gear and a four-axle drive connected with the steering gear; the four groups of wheels are symmetrically and rotatably arranged on the side wall of the frame chassis to support the frame chassis and are connected with the four-axle drive; and the crawling ladder is arranged at one end of the frame chassis. The steering system is arranged above the frame chassis, and the crawling ladder is arranged at the end part of the frame chassis, so that students can climb up the crawling ladder to observe the operation of the steering system, and a better teaching effect is achieved for teaching. And the steering system is convenient to maintain.

Description

Technical Field

[0001] The present application relates to the field of vehicle teaching technology, and in particular to a teaching and training vehicle system. Background Art

[0002] In the prior art, vehicle teaching only uses a teaching test bench, such as using a screen to play teaching videos. It is difficult to gain an in-depth understanding of the chassis structure and working principle of special vehicles, resulting in poor teaching quality. Summary of the invention

[0003] In view of this, the purpose of this application is to propose a teaching and training vehicle system to completely or partially solve the problems existing in the background technology.

[0004] Based on the above objectives, the present application provides a teaching and training vehicle system, including:

[0005] Frame chassis;

[0006] A steering system, arranged above the frame chassis, comprising a steering gear and a four-axle drive connected to the steering gear;

[0007] Four sets of wheels, symmetrically and rotationally arranged on the side walls of the frame chassis to support the frame chassis and drivingly connected to the four bridges;

[0008] A ladder is arranged at one end of the vehicle frame chassis.

[0009] Optionally, the frame chassis includes a four-sided frame and a plurality of mounting plates arranged at intervals on the four-sided frame.

[0010] Optionally, the four-bridge drive includes a first bridge drive, a second bridge drive, a third bridge drive and a fourth bridge drive that are connected to each other, the four groups of wheels include a first group of wheels, a second group of wheels, a third group of wheels and a fourth group of wheels, the first bridge drive is connected to the first group of wheels, the second bridge drive is connected to the second group of wheels, the third bridge drive is connected to the third group of wheels, and the fourth bridge drive is connected to the fourth group of wheels.

[0011] Optionally, the first bridge drive and the fourth bridge drive structures are consistent, the first bridge drive is connected to the steering gear through a steering vertical arm, and each bridge drive includes a straight tie rod, a steering knuckle arm, a left tie rod arm, a tie rod, and a right tie rod arm, one end of the straight tie rod is connected to one end of the steering vertical arm, the other end of the straight tie rod is connected to one end of the steering knuckle arm, the other end of the steering knuckle arm is connected to a corresponding wheel and one end of the left tie rod arm, the other end of the left tie rod arm is connected to one end of the tie rod, the other end of the tie rod is connected to one end of the right tie rod arm, and the other end of the right tie rod arm is connected to the corresponding wheel, wherein the straight tie rod of the fourth bridge drive structure is connected to the steering vertical arm through a multi-section connecting arm.

[0012] Optionally, the first axle drive and the fourth axle drive both further include a power-assisting cylinder, and the power-assisting cylinder is connected to the corresponding wheel via a pull rod.

[0013] Optionally, the second axle drive and the third axle drive have the same structure, and each axle drive includes a rotating shaft, and both ends of the rotating shaft are connected to corresponding wheels.

[0014] Optionally, the training vehicle system also includes a steering hydraulic system for controlling the assistant oil cylinders driven by the first axle and the fourth axle, the steering hydraulic system including: a distribution valve, a control valve group and a steering oil tank, the first end of the distribution valve is connected to the inlet end of the power-assisting oil cylinder driven by the first axle and the outlet end of the power-assisting oil cylinder driven by the fourth axle, the second end of the distribution valve is connected to the outlet end of the power-assisting oil cylinder driven by the first axle and the inlet end of the power-assisting oil cylinder driven by the fourth axle, the third end and the fourth end of the distribution valve are respectively connected to the control valve group, and the fifth end of the distribution valve is connected to the steering oil tank assembly.

[0015] Optionally, the second end of the control valve group is connected to the steering oil tank assembly, and an essential oil filter assembly and a pump assembly are provided between the second end of the control valve group and the steering oil tank assembly, the essential oil filter assembly is arranged adjacent to the control valve group, and the pump assembly is arranged adjacent to the steering oil tank assembly.

[0016] Optionally, the control valve group includes a one-way back pressure valve and a steady flow valve, the one-way back pressure valve is arranged adjacent to the distribution valve, and the steady flow valve is arranged adjacent to the essential oil filter assembly.

[0017] As can be seen from the above, the teaching and training vehicle system provided by the present application includes a frame chassis; a steering system, which is arranged above the frame chassis, including a steering gear and a four-axle drive connected to the steering gear; four sets of wheels, which are symmetrically and rotationally arranged on the side walls of the frame chassis to support the frame chassis and are connected to the four-axle drive; a ladder, which is arranged at one end of the frame chassis. The steering system is arranged above the frame chassis, and a ladder is arranged at the end of the frame chassis, so that students can climb up the ladder to observe the operation of the steering system, which has a better teaching effect. It is also convenient to repair the steering system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the framework structure of a teaching and training vehicle system according to an embodiment of the present application;

[0020] Figure 2 A schematic diagram of a top view of a teaching and training vehicle system according to an embodiment of the present application;

[0021] Figure 3 A schematic diagram of a steering hydraulic system according to an embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of a hydraulic winch system according to an embodiment of the present application.

[0023] In the attached figure:

[0024] 01. Frame chassis; 02. Driver's seat; 03. Steering system; 04. Ladder; 31. Steering gear; 32. Steering drop arm; 33. Straight tie rod; 34. Steering knuckle arm; 35. Left arm of tie rod; 36. Tie rod; 37. Right arm of tie rod; 38. Connecting arm; 39. Power cylinder; 1. Power cylinder driven by the first axle; 2. Power cylinder driven by the fourth axle; 3. Distribution valve; 4. Control valve group; 5. Flow stabilizing valve; 6. Fine oil filter assembly; 7. Pump assembly; 8. Coarse oil filter; 9. Steering oil tank assembly; 10. Auxiliary pump; 11. Check valve; 12. Check back pressure valve. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] The specific embodiments of the present application are described below with reference to the accompanying drawings.

[0028] like Figure 1 , Figure 2 As shown, the present application provides a teaching and training vehicle system, comprising:

[0029] Frame chassis 01;

[0030] A steering system 03, arranged above the frame chassis 01, comprises a steering gear 31 and a four-axle drive connected to the steering gear 31;

[0031] Four sets of wheels, symmetrically and rotationally arranged on the side walls of the frame chassis 01 to support the frame chassis 01, and connected to the four-bridge drive;

[0032] The ladder 04 is arranged at one end of the frame chassis 01 .

[0033] Specifically, the steering system 03 is arranged above the frame chassis 01, and a ladder 04 is arranged at the end of the frame chassis 01, so that students can climb up the ladder 04 to observe the operation of the steering system 03, which has a better teaching effect. It is also convenient to repair the steering system 03.

[0034] In some embodiments, the vehicle frame chassis 01 includes a four-sided frame and a plurality of mounting plates spaced apart from each other on the four-sided frame.

[0035] Specifically, the frame chassis 01 includes a four-sided frame and a plurality of mounting plates spaced apart on the four-sided frame. The plurality of mounting plates are spaced apart on the four-sided frame, so that the steering system 03 can be repaired through the gaps, so that students can see the operation of the steering system 03 more intuitively, which has a better teaching effect.

[0036] In some embodiments, the four-bridge drive includes a first bridge drive, a second bridge drive, a third bridge drive and a fourth bridge drive connected to each other, the four groups of wheels include a first group of wheels, a second group of wheels, a third group of wheels and a fourth group of wheels, the first bridge drive is connected to the first group of wheels, the second bridge drive is connected to the second group of wheels, the third bridge drive is connected to the third group of wheels, and the fourth bridge drive is connected to the fourth group of wheels.

[0037] Specifically, the structures of the first bridge driver, the second bridge driver, the third bridge driver and the fourth bridge driver are as follows: Figure 2 As shown, the figure shows the specific structure of the first bridge drive and the fourth bridge drive (as shown in the dotted box in the figure), and the second bridge drive and the third bridge drive are rotating shafts, which are not shown in the figure.

[0038] In some embodiments, Figure 2 As shown, the first bridge drive and the fourth bridge drive structures are consistent. The first bridge drive is connected to the steering gear 31 through a steering vertical arm 32. Each bridge drive includes a straight tie rod 33, a steering knuckle arm 34, a tie rod left arm 35, a tie rod 36, and a tie rod right arm 37. One end of the straight tie rod 33 is connected to one end of the steering vertical arm 32, and the other end of the straight tie rod 33 is connected to one end of the steering knuckle arm 34. The other end of the steering knuckle arm 34 is connected to the corresponding wheel and one end of the tie rod left arm 35. The other end of the tie rod left arm 35 is connected to one end of the tie rod 36, and the other end of the tie rod 36 is connected to one end of the tie rod right arm 37. The other end of the tie rod right arm 37 is connected to the corresponding wheel. The straight tie rod 33 of the fourth bridge drive structure is connected to the steering vertical arm 32 through a multi-section connecting arm 38.

[0039] Specifically, the straight tie rod 33 drives the steering knuckle arm 34 to rotate under the steering of the steering vertical arm 32, and the steering knuckle arm 34 drives the transverse tie rod 36 to move, and the transverse tie rod 36 drives the transverse tie rod left arm 35 and the transverse tie rod right arm 37 to move, thereby driving the wheel to rotate and completing the wheel rotation action. Each structure can be rotatably fixed above the mounting plate on the frame chassis 01, so that it is convenient for students to observe the specific operation of each structure more carefully and improve students' learning experience.

[0040] In some embodiments, Figure 2 As shown, the first axle drive and the fourth axle drive both further include a power-assisting oil cylinder 39, and the power-assisting oil cylinder 39 is connected to the corresponding wheel through a pull rod.

[0041] Specifically, the booster cylinder 39 can assist the four-axle drive under the control of the steering hydraulic system, making the steering system 03 run more smoothly.

[0042] In some embodiments, the second axle drive and the third axle drive have the same structure, and each axle drive includes a rotating shaft, and both ends of the rotating shaft are connected to corresponding wheels.

[0043] Exemplarily, the first bridge is driven as a steering drive bridge, the second bridge is driven as a through-drive middle bridge, the third bridge is driven as a simulated steering bridge, and the fourth bridge is driven as a trailer load-bearing bridge (with follow-up control). Special note that the fourth bridge is a trailer load-bearing bridge. Unlike other load-bearing bridges, it has a follow-up control function, that is, when the tractor turns in a narrow place, it can realize the reverse follow-up steering of the trailer part, so that the trailer part can work in a smaller turning radius. The training vehicle system (training platform) as a whole can meet the structural principle cognition, disassembly and assembly, and fault diagnosis learning of all axle types of special vehicles below 60 tons.

[0044] In some embodiments, Figure 3 As shown, the training vehicle system also includes a steering hydraulic system for controlling the assistant oil cylinders driven by the first bridge and the fourth bridge, and the steering hydraulic system includes: a distribution valve 3, a control valve group 4 and a steering oil tank, the first end of the distribution valve 3 is connected to the inlet end of the power-assisting oil cylinder 1 driven by the first bridge and the outlet end of the power-assisting oil cylinder 2 driven by the fourth bridge, the second end of the distribution valve 3 is connected to the outlet end of the power-assisting oil cylinder 1 driven by the first bridge and the inlet end of the power-assisting oil cylinder 2 driven by the fourth bridge, the third end and the fourth end of the distribution valve 3 are respectively connected to the control valve group 4, and the fifth end of the distribution valve 3 is connected to the steering oil tank assembly 9.

[0045] In some embodiments, Figure 3 As shown, the second end of the control valve group 4 is connected to the steering oil tank assembly 9, and a fine oil filter assembly 6 and a pump assembly 7 are provided between the second end of the control valve group 4 and the steering oil tank assembly 9. The fine oil filter assembly 6 is arranged adjacent to the control valve group 4, and the pump assembly 7 is arranged adjacent to the steering oil tank assembly 9.

[0046] Specifically, the essential oil filter assembly 6 includes a first essential oil filter and a second essential oil filter, the pump assembly 7 includes a first pump and a second pump, the first essential oil filter is connected to the first pump, and the second essential oil filter is connected to the second pump. In this way, under the action of the pump assembly 7, the oil in the steering oil tank assembly 9 is transmitted to the power-assisted oil cylinder 39. Under the action of the essential oil filter assembly 6, impurities in the oil can be filtered, so that the power-assisted oil cylinder 39 can operate stably, thereby increasing the service life of the power-assisted oil cylinder 39.

[0047] In some embodiments, Figure 3 As shown, the control valve group 4 includes a one-way back pressure valve 12 and a steady flow valve 5 . The one-way back pressure valve 12 is arranged adjacent to the distribution valve 3 , and the steady flow valve 5 is arranged adjacent to the essential oil filter assembly 6 .

[0048] Specifically, the steady flow valve 5 of the control valve group 4 includes a first end, a second end, a third end and a fourth end. The first end of the steady flow valve 5 is connected to the third end of the distribution valve 3, the second end of the steady flow valve 5 is connected to one end of the one-way back pressure valve 12, the other end of the one-way back pressure valve 12 is connected to the fourth end of the distribution valve 3, the third end of the steady flow valve 5 is connected to the first essential oil filter in the essential oil filter assembly 6, and the fourth end of the pressure regulating valve is connected to the second essential oil filter in the essential oil filter assembly 6.

[0049] In the present application, a three-phase asynchronous motor can be used as a power unit instead of an engine, which is controlled by a separate motor control switch, thereby reducing the overall weight of the training bench while also saving costs. The training bench can also have more convenient locations for viewing the locations of the bench components, and the practical teaching effect is significant.

[0050] The present application may also include a suspension system, which may be a 60-ton heavy equipment transport vehicle tractor suspension system. The suspension system refers to the general term for all force transmission connection devices between the frame and the axle, and is generally composed of three parts: an elastic element, a shock absorber, and a guide mechanism (force transmission device). Its main task is to transmit all forces and moments acting between the wheel and the frame (or body), and to mitigate the impact load transmitted to the frame (or body) by the uneven road surface, and to attenuate the vibration of the load-bearing system caused thereby. The front suspension of the equipment adopts a leaf spring suspension. The front end adopts a lifting lug, and the rear end adopts a skateboard structure. Its elastic element leaf spring is arranged longitudinally. When the leaf spring deforms under the load, there is relative sliding between the sheets to generate friction, which can promote the attenuation of the frame vibration. However, the dry friction between the sheets will cause the impact of the wheel to be transmitted to the frame to a large extent, that is, reduce the ability of the suspension to mitigate the impact. The rear suspension adopts the most advanced air suspension currently used for heavy vehicles. The air suspension uses compressed air in the compressed air system to pressurize the air spring. The air suspension can provide an air cushion-like support over the entire range from no load to full load. The suspension also provides high-performance load distribution on the left and right sides and the front and rear axles, which helps to control the braking balance. Make the vehicle more off-road and smooth. In order to analyze the airbag control, the training bench uses a dual-control self-locking air circuit valve, which allows a group or a single airbag to be raised or lowered or self-locked separately. Let the students more intuitively learn the shock-absorbing effect and principle of the air suspension on the entire vehicle beam when overloaded, lightly loaded, and cornering. At the same time, for the convenience of operation, the control modules are uniformly assembled on the right side of the seat. The specific structures of the above-mentioned front suspension and rear suspension are all adopted from tractors, which are not specifically introduced in this application.

[0051] For more practical application effects, Figure 4As shown in the figure, this equipment is also equipped with an original vehicle simulation hydraulic winch system. It is mainly used to tow the upper and lower semi-trailer platforms of heavy equipment that has lost power. It can also be used to rescue other vehicles and perform self-rescue operations. The system is mainly composed of a hydraulic pump, a hydraulic motor, a disc brake, a reversing valve, a winch, a wire rope, etc. The winch hydraulic pressure is a self-developed hydraulic pressure. According to the working principle of the original vehicle winch, the winch hydraulic system is separated separately to facilitate the teaching of teachers and the learning of students. The manual reversing fork is changed to the solenoid valve control type, and the winch hook can be directly controlled from the cab seat to extend and retract. Teaching interaction is achieved.

[0052] The teaching and training vehicle system package of this application teaches the structural composition of the steering system 03, suspension system and hydraulic system. This device is equipped with a frequency converter to realize the forward, reverse, fast and slow rotation of the wheels, and truly simulates the acceleration, deceleration, forward and reverse gear functions of the original vehicle, fully demonstrating the working principles of the vehicle steering system 03, driving system, suspension system and hydraulic system. It allows students or users to observe and learn the working conditions of each working system in an all-round and quick manner, improves the recognition of the real object, greatly improves the quality of teaching, and makes teaching easier and more effective.

[0053] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0054] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0055] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0056] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A teaching and training vehicle system, characterized in that: include: Frame chassis (01); A steering system (03) is arranged above the vehicle frame chassis (01), comprising a steering gear (31) and a four-axle drive connected to the steering gear (31); Four sets of wheels are symmetrically and rotationally arranged on the side walls of the frame chassis (01) to support the frame chassis (01) and are drive-connected to the four bridges; A ladder (04) is arranged at one end of the vehicle frame chassis (01).

2. A teaching and training vehicle system according to claim 1, characterized in that: The vehicle frame chassis (01) comprises a four-sided frame and a plurality of mounting plates arranged at intervals on the four-sided frame.

3. A teaching and training vehicle system according to claim 2, characterized in that: The four-bridge drive includes a first bridge drive, a second bridge drive, a third bridge drive and a fourth bridge drive that are connected to each other; the four groups of wheels include a first group of wheels, a second group of wheels, a third group of wheels and a fourth group of wheels; the first bridge drive is connected to the first group of wheels, the second bridge drive is connected to the second group of wheels, the third bridge drive is connected to the third group of wheels, and the fourth bridge drive is connected to the fourth group of wheels.

4. A teaching and training vehicle system according to claim 3, characterized in that: The first bridge drive and the fourth bridge drive have the same structure. The first bridge drive is connected to the steering gear (31) through a steering vertical arm (32). Each bridge drive comprises a straight tie rod (33), a steering knuckle arm (34), a left tie rod arm (35), a tie rod (36), and a right tie rod arm (37). One end of the straight tie rod (33) is connected to one end of the steering vertical arm (32), and the other end of the straight tie rod (33) is connected to one end of the steering knuckle arm (34). The other end of the steering knuckle arm (34) is connected to the corresponding wheel and one end of the left tie rod arm (35), the other end of the left tie rod arm (35) is connected to one end of the tie rod (36), the other end of the tie rod (36) is connected to one end of the right tie rod arm (37), and the other end of the right tie rod arm (37) is connected to the corresponding wheel, wherein the straight tie rod (33) of the fourth bridge drive structure is connected to the steering vertical arm (32) through a multi-section connecting arm (38).

5. A teaching and training vehicle system according to claim 3, characterized in that The first axle drive and the fourth axle drive both further include a booster oil cylinder (39), and the booster oil cylinder (39) is connected to the corresponding wheel via a pull rod.

6. A teaching and training vehicle system according to claim 5, characterized in that: The second bridge drive and the third bridge drive have the same structure, and each bridge drive includes a rotating shaft, and both ends of the rotating shaft are connected to corresponding wheels.

7. A teaching and training vehicle system according to claim 5, characterized in that: The training vehicle system also includes a steering hydraulic system for controlling the assistant oil cylinders driven by the first bridge and the fourth bridge, and the steering hydraulic system includes: a distribution valve (3), a control valve group (4) and a steering oil tank, the first end of the distribution valve (3) is connected to the inlet end of the assisting oil cylinder (1) driven by the first bridge and the outlet end of the assisting oil cylinder (2) driven by the fourth bridge, the second end of the distribution valve (3) is connected to the outlet end of the assisting oil cylinder (1) driven by the first bridge and the inlet end of the assisting oil cylinder (2) driven by the fourth bridge, the third end and the fourth end of the distribution valve (3) are respectively connected to the control valve group (4), and the fifth end of the distribution valve (3) is connected to the steering oil tank assembly (9).

8. A teaching and training vehicle system according to claim 7, characterized in that: The second end of the control valve group (4) is connected to the steering oil tank assembly (9), and an essential oil filter assembly (6) and a pump assembly (7) are provided between the second end of the control valve group (4) and the steering oil tank assembly (9). The essential oil filter assembly (6) is arranged adjacent to the control valve group (4), and the pump assembly (7) is arranged adjacent to the steering oil tank assembly (9).

9. A teaching and training vehicle system according to claim 7, characterized in that: The control valve group (4) comprises a one-way back pressure valve (12) and a flow stabilizing valve (5). The one-way back pressure valve (12) is arranged adjacent to the distribution valve (3), and the flow stabilizing valve (5) is arranged adjacent to the essential oil filter assembly (6).

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