Protection frame for magnetic suspension tracked vehicle and tracked vehicle with protection frame

Abstract

The utility model discloses a protection frame for a magnetic suspension crawler and the crawler thereof, and solves the technical problems that the safety of a crawler body and a magnetic suspension system cannot be guaranteed and the vertical initial suspension is inconvenient to start when the existing magnetic suspension crawler is in an unstable suspension state or a severe working condition of magnetic suspension. The device comprises a first telescopic driving rod and a second telescopic driving rod which are arranged at the bottom of a vehicle body, the first telescopic driving rod is used for controlling the height from the bottom of the vehicle body to the ground, and the second telescopic driving rod is used for controlling the contact angle between the first telescopic driving rod and the ground; the first telescopic driving rod is rotationally connected with the bottom of the vehicle body, and the second telescopic driving rod is rotationally connected with the first telescopic driving rod through a first connecting rod. The utility model has the advantages that the vehicle body and the magnetic suspension system are effectively protected, the initial vertical suspension can be conveniently started, and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of crawler vehicles, and particularly relates to a protective frame for a maglev crawler vehicle and the crawler vehicle. Background Technique

[0002] Crawler vehicles have the advantages of small unit pressure on the ground, strong grip, good cross-country performance and strong passing performance, and are widely used in various construction machinery and agricultural machinery. In the prior art, the chassis and the vehicle body of the crawler vehicle are usually rigidly connected, and only steel springs are provided for vibration isolation at the connection between the crawler wheel set and the chassis. However, the damping of ordinary steel springs is small, and the vibration damping effect on external disturbances such as uneven road surfaces is poor. Moreover, crawler vehicles are mostly used in complex and harsh terrain environments with poor road smoothness. Both of these lead to relatively intense vibrations transmitted to the crawler vehicle body, significantly affecting the riding comfort and operation quality of the crawler vehicle. In addition, crawler vehicles mostly use internal combustion engines or electric motors to output torque and drive the crawlers to move forward through transmission mechanisms. During the moving process, due to large frictional losses, the power consumption is large, the transmission components are easily damaged, the energy use efficiency is reduced, and the later operation and maintenance costs are increased.

[0003] In order to reduce the frictional force during operation and the energy consumption caused by its own weight, a technology of introducing maglev into crawler vehicles has emerged.

[0004] However, in the existing maglev crawler vehicles, the technical problems of how to ensure the safety of the maglev system and the vehicle body during the maglev start-up stage, the maglev stop stage and some extreme working conditions when the vehicle body is unstable have not been considered.

[0005] At the same time, the existing superconducting maglev technology needs to turn on the suspension before stable suspension, that is, it is necessary to make the magnet and the track move relative to each other through an additional support mechanism or manpower to make the magnet generate a suspension force. The operation is relatively troublesome and the displacement accuracy is not high, and the safety is difficult to guarantee, especially for this kind of crawler vehicle with large volume and heavy weight.

[0006] Based on the problems existing in the above prior art, it is necessary to develop a structure or a crawler vehicle that can ensure the safety of the maglev system and the vehicle body of the maglev crawler vehicle in various situations and is convenient to start the initial suspension. Utility Model Content

[0007] The technical problem to be solved by the utility model is that the existing maglev crawler vehicle cannot guarantee the safety of the vehicle body and the maglev system in the unstable maglev state or harsh working conditions, and it is not convenient to start the vertical initial suspension.

[0008] The utility model is realized through the following technical solutions:

[0009] A protective frame for a maglev crawler vehicle, comprising a first telescopic drive rod and a second telescopic drive rod arranged at the bottom of the vehicle body. The first telescopic drive rod is used to control the height of the bottom of the vehicle body from the ground. The first telescopic drive rod is rotatably connected to the bottom of the vehicle body. The second telescopic drive rod is rotatably connected to the first telescopic drive rod through a first connecting rod. The second telescopic drive rod is used to control the contact angle between the first telescopic drive rod and the ground.

[0010] In the vertical suspension, when the vehicle body is not in a stable suspension state, the first telescopic drive rod of the protective frame contacts the ground to provide the support force required by the vehicle body and prevent the upper and lower magnet components of the maglev system from contacting. After the maglev is stable, the first telescopic drive rod can be retracted by the self-retraction of the first telescopic drive rod and the drive of the second telescopic drive rod on the first telescopic drive rod; when the vehicle body ends the suspension state, the protective frame is released by extending the first telescopic drive rod to prevent the upper and lower magnet components of the maglev system from colliding.

[0011] On the other hand, the structure of the maglev crawler vehicle is that the first maglev component is installed on the vehicle body, and the second maglev component capable of generating magnetic force with the first maglev component is installed on the chassis. A gap is generated between the vehicle body and the chassis through maglev control. When it is necessary to start suspension, relative movement needs to be generated between the second maglev component on the chassis and the first maglev component on the vehicle body first (that is, the initial vertical gap value is changed). The protective frame designed by the utility model can change the gap between the first maglev component and the second maglev component by controlling the extension of the first telescopic drive rod, smoothly start the vertical initial suspension. When the gap changes to a certain value, the suspension force balances the vehicle body gravity, so as to achieve stable suspension, and the operation is very convenient.

[0012] In addition, when the vertical displacement of the crawler vehicle body exceeds the set value, the support seat of the protective frame will contact the ground. In this embodiment, the maximum vertical sinking amount of the vehicle body can be restricted by controlling the support length of the protective frame, avoiding dangerous phenomena such as the vehicle body hitting the track during the operation of the crawler vehicle.

[0013] Since the second telescopic drive rod can drive the first telescopic drive rod to rotate, that is, the contact angle between the first telescopic drive rod and the ground can be adjusted. Therefore, according to the road conditions, by controlling the extension and retraction of the second telescopic drive rod, it can be adjusted so that the first telescopic drive rod is always perpendicular to the ground, so that the protective frame can always stably support the crawler vehicle.

[0014] The utility model preferably relates to a protective frame for a maglev crawler vehicle. The first telescopic drive rod comprises a first drive assembly and a first rod body. One end of the first drive assembly is rotatably connected to the bottom of the vehicle body. The other end of the first drive assembly is connected to the first rod body. The first drive assembly is connected to the first connecting rod. The second telescopic drive rod is rotatably connected to the first connecting rod. Preferably, the rotational connection is a hinge connection.

[0015] The present utility model preferably relates to a protective frame for a maglev crawler vehicle. One end of the second telescopic drive rod is rotatably connected to the bottom of the vehicle body, and the other end of the second telescopic drive rod is rotatably connected to the first telescopic drive rod.

[0016] The present utility model preferably relates to a protective frame for a maglev crawler vehicle. The second telescopic drive rod includes a second drive assembly and a second rod body. One end of the second drive assembly is rotatably connected to the bottom of the vehicle body, the other end of the second drive assembly is connected to the second rod body, and the second rod body is rotatably connected to the first telescopic drive rod through the first connecting rod. Preferably, the rotational connection is a hinge connection.

[0017] The present utility model preferably relates to a protective frame for a maglev crawler vehicle. The second telescopic drive rod is further connected to the vehicle body through a second connecting rod. Preferably, the second drive assembly is connected to the bottom of the vehicle body through the second connecting rod, which can better ensure the stability of the second telescopic drive rod.

[0018] The present utility model preferably relates to a protective frame for a maglev crawler vehicle. The first telescopic drive rod is further connected to the bottom of the vehicle body through a third connecting rod. Preferably, the first drive assembly is connected to the vehicle body through the third connecting rod, which can better ensure the stability of the first telescopic drive rod.

[0019] The present utility model preferably relates to a protective frame for a maglev crawler vehicle. The free end of the first telescopic drive rod is provided with a support foot, and the area of the support foot is relatively large, which is conducive to better supporting the vehicle body and ensuring its stability.

[0020] A maglev crawler vehicle includes the above protective frame.

[0021] Furthermore, a plurality of the protective frames are provided and symmetrically distributed at the bottom of the vehicle body, so as to achieve stable support.

[0022] The utility model has the following advantages and beneficial effects:

[0023] 1. By providing a protective frame at the bottom of the vehicle body, the present utility model realizes the support and protection of the vehicle body and the protection of the maglev system by adjusting the state changes of the telescopic drive rod and several connecting rods of the protective frame.

[0024] 2. Through the cooperative action of two rotatably connected telescopic drive rods, the present utility model can realize the adjustment of the distance between the vehicle body and the ground by the protective frame, and the adjustment of the contact angle between the protective frame and the ground. At the beginning of levitation, the support of the protective frame enables an initial vertical levitation between the upper and lower maglev components to prevent collision, and when the vehicle body or the maglev is unstable, the protective frame can support and protect the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the utility model, and constitute a part of this application, but do not limit the embodiments of the utility model. In the drawings:

[0026] Figure 1 is a schematic three-dimensional structure diagram of the protective frame of the present utility model;

[0027] Figure 2 is a schematic front view structure diagram of the protective frame of the present utility model;

[0028] Figure 3 is a schematic bottom view structure diagram of the protective frame of the present utility model;

[0029] Figure 4 is a schematic structure diagram of the crawler vehicle in Embodiment 2 of the present utility model.

[0030] The component names in the drawings are as follows:

[0031] 1 - vehicle body, 2 - crawler, 3 - protective frame, 30 - first telescopic drive rod, 300 - first drive assembly, 301 - first rod body, 31 - second telescopic drive rod, 310 - second drive assembly, 311 - second rod body, 32 - first connecting rod, 33 - second connecting rod, 34 - third connecting rod, 35 - support leg, 4 - Dewar, 5 - chassis, 6 - permanent magnet array. Detailed implementation manners

[0032] To make the purpose, technical solutions and advantages of the utility model clearer and more understandable, the utility model will be further described in detail below with reference to the embodiments and the accompanying drawings. The illustrative embodiments of the utility model and their descriptions are only used to explain the utility model and do not limit the utility model.

[0033] Embodiment 1

[0034] As Figures 1-3 shown, a protective frame for a maglev crawler vehicle includes a first telescopic drive rod 30 and a second telescopic drive rod 31 provided at the bottom of the vehicle body 1. The first telescopic drive rod 30 is used to control the height of the bottom of the vehicle body 1 from the ground, and the second telescopic drive rod 31 is used to control the contact angle between the first telescopic drive rod 30 and the ground; the first telescopic drive rod 30 is hinged to the bottom of the vehicle body 1, and the second telescopic drive rod 31 is rotatably connected to the first telescopic drive rod 30 through a first connecting rod 32.

[0035] In the vertical suspension, when the vehicle body 1 is not in a stable suspension state, the first telescopic drive rod 30 of the protective frame contacts the ground to provide the support force required by the vehicle body 1 and prevent the upper and lower magnet components of the maglev system from contacting. After the maglev is stable, the first telescopic drive rod 30 can be retracted by the self - contraction of the first telescopic drive rod 30 and the drive of the second telescopic drive rod 31 on the first telescopic drive rod 30; when the vehicle body 1 ends the suspension state, the first telescopic drive rod 30 is extended to release the protective frame and prevent the upper and lower magnet components of the maglev system from colliding.

[0036] In addition, when the vertical displacement of the crawler 2 vehicle body 1 exceeds the set value, the support seat of the protective frame will contact the ground. In this embodiment, the maximum vertical sinking amount of the vehicle body 1 can be restricted by controlling the support length of the protective frame, avoiding dangerous phenomena such as the vehicle body 1 hitting the track during the operation of the crawler 2 vehicle.

[0037] Since the second telescopic drive rod 31 can drive the first telescopic drive rod 30 to rotate, that is, the contact angle between the first telescopic drive rod 30 and the ground can be adjusted. Therefore, according to the road conditions, by controlling the telescopic movement of the second telescopic drive rod 31, it can be adjusted so that the first telescopic drive rod 30 is always perpendicular to the ground, which can always keep the protective frame providing stable support for the crawler 2 vehicle.

[0038] In this embodiment, the first telescopic drive rod 30 includes a first drive assembly 300 and a first rod body 301. One end of the first drive assembly 300 is hinged to the bottom of the vehicle body 1, the other end of the first drive assembly 300 is connected to the first rod body 301, the first drive assembly 300 is connected to the first link 32, and the second telescopic drive rod 31 is rotatably connected to the first link 32.

[0039] In this embodiment, one end of the second telescopic drive rod 31 is hinged to the bottom of the vehicle body 1, and the other end of the second telescopic drive rod 31 is rotatably connected to the first telescopic drive rod 30.

[0040] In this embodiment, the second telescopic drive rod 31 includes a second drive assembly 310 and a second rod body 311. One end of the second drive assembly 310 is hinged to the bottom of the vehicle body 1, the other end of the second drive assembly 310 is connected to the second rod body 311, the second rod body 311 is rotatably connected to the first telescopic drive rod 30 through the first link 32, and the first link 32 is perpendicularly connected to the first drive assembly 300.

[0041] In this embodiment, the second drive assembly 310 is connected to the vehicle body 1 through the second link 33, which can ensure the stability of the second telescopic drive rod 31.

[0042] In this embodiment, the first drive assembly 300 is connected to the vehicle body 1 through the third connecting rod 34, which can ensure the stability of the first telescopic drive rod 30.

[0043] In this embodiment, a support foot 35 is provided at the free end of the first telescopic drive rod 30. The support foot 35 has a relatively large area, which is conducive to better supporting the vehicle body 1 and ensuring its stability.

[0044] In this embodiment, both the first drive assembly 300 and the second drive assembly 310 are telescopic hydraulic cylinders, which are connected to the connecting seats at the bottom of the vehicle body 1 through a rotating shaft.

[0045] Embodiment 2

[0046] As Figure 3 shown, a maglev tracked vehicle includes the protective frame of Embodiment 1.

[0047] Four protective frames are provided and symmetrically distributed at the bottom of the vehicle body 1, which can achieve stable support.

[0048] The first maglev assembly is installed on the vehicle body 1, and the second maglev assembly capable of generating magnetic force with the first maglev assembly is installed on the chassis 5. A gap is generated between the vehicle body 1 and the chassis 5 through maglev control. When it is necessary to start levitation, a vertical gap needs to be first formed between the second maglev assembly on the chassis 5 and the first maglev assembly on the vehicle body 1, that is, vertical initial levitation. The protective frame 3 designed by the present utility model can make the first telescopic drive rod 30 extend to generate a gap between the first maglev assembly and the second maglev assembly, smoothly starting the vertical initial levitation. Subsequently, as the magnetic levitation force is equal to the vehicle weight, stable levitation is achieved, and the operation is very convenient.

[0049] As Figure 4 shown, in this embodiment, the first maglev assembly is the Dewar 4 installed on both sides of the vehicle body, and the second maglev assembly is the permanent magnet array 6 installed on the top of the chassis.

[0050] In the present utility model, the "vertical direction" refers to the direction from the bottom of the vehicle body 1 to the top of the vehicle body 1.

[0051] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the utility model. It should be understood that the above are only specific embodiments of the utility model and are not used to limit the protection scope of the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protective frame for a magnetically suspended crawler vehicle, characterized in that: The invention comprises a first telescopic driving rod (30) and a second telescopic driving rod (31) arranged at the bottom of a vehicle body (1); the first telescopic driving rod (30) is used to control the height of the bottom of the vehicle body (1) from the ground; the first telescopic driving rod (30) is rotatably connected to the bottom of the vehicle body (1); the second telescopic driving rod (31) is rotatably connected to the first telescopic driving rod (30) via a first connecting rod (32); the second telescopic driving rod (31) is used to control the contact angle between the first telescopic driving rod (30) and the ground.

2. The protection frame for a magnetic suspension tracked vehicle according to claim 1, characterized in that: The first telescopic driving rod (30) comprises a first driving assembly (300) and a first rod body (301); one end of the first driving assembly (300) is rotatably connected to the bottom of the vehicle body (1); the other end of the first driving assembly (300) is connected to the first rod body (301); the first driving assembly (300) is connected to the first connecting rod (32); and the second telescopic driving rod (31) is rotatably connected to the first connecting rod (32).

3. A protection frame for a magnetically suspended crawler vehicle according to claim 1 or 2, characterized in that: One end of the second telescopic driving rod (31) is rotatably connected to the bottom of the vehicle body (1), and the other end of the second telescopic driving rod (31) is rotatably connected to the first telescopic driving rod (30).

4. A protection frame for a magnetic suspension tracked vehicle according to claim 1 or 2, characterized in that: The second telescopic driving rod (31) comprises a second driving assembly (310) and a second rod body (311); one end of the second driving assembly (310) is rotatably connected to the bottom of the vehicle body (1); the other end of the second driving assembly (310) is connected to the second rod body (311); and the second rod body (311) is rotatably connected to the first telescopic driving rod (30) via the first connecting rod (32).

5. A protection frame for a magnetically suspended crawler vehicle according to claim 1 or 2, characterized in that: The second telescopic driving rod (31) is also connected to the bottom of the vehicle body (1) via a second connecting rod (33).

6. A protection frame for a magnetically suspended tracked vehicle according to claim 1 or 2, characterized in that: The first telescopic driving rod (30) is also connected to the bottom of the vehicle body (1) via a third connecting rod (34).

7. A protection frame for a magnetic suspension tracked vehicle according to claim 1 or 2, characterized in that: The free end of the first telescopic driving rod (30) is provided with a supporting foot (35).

8. A magnetic levitation crawler vehicle, characterized in that: It comprises a protection frame as described in any one of claims 1 to 7.

9. The magnetic levitation crawler vehicle according to claim 8, characterized in that: The protection frames are arranged in plurality and are symmetrically distributed at the bottom of the vehicle body (1).

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