Tunnel car walking steering system

Abstract

The utility model relates to a tunnel car walking steering system which comprises a connecting beam, a steering mechanism and a lifting mechanism, the two ends of the connecting beam are connected with two rims through two connecting seats, a first connecting lug and a second connecting lug are arranged on the connecting seats, and the steering mechanism comprises a steering connecting rod and a steering oil cylinder. The two ends of the steering connecting rod are hinged to the two first connecting lugs respectively, the two steering oil cylinders are arranged at the bottom of the connecting beam and hinged to the two second connecting lugs respectively to drive the rim and the tire to steer, one end of the lifting mechanism is connected with the connecting beam, and the other end of the lifting mechanism is connected with the frame. The connecting beam is driven to lift relative to the frame. According to the tunnel vehicle walking steering system, the height of a vehicle can be adjusted by adjusting the length of the suspension connecting rod through the lifting oil cylinder, the steering oil cylinder adjusts rotation of the connecting base at different angles to achieve vehicle steering, an original suspension frame structure is omitted, the height of a vehicle body is reduced, and the trafficability of the vehicle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a tunnel vehicle travel steering system. Background Art

[0002] At present, many underground tunnel constructions are restricted by the road surface in the tunnel and other reasons such as underground construction space. The transport vehicles are all wheel-rail transport vehicles, which need to lay tracks in the tunnel and operate on a single line. The transport efficiency is low and the operation is single.

[0003] General tire transport vehicles cannot meet the requirements of the circular road surface in the tunnel and cannot complete the underground tunnel construction work. The existing tire transport vehicle suspension mechanism is to adjust the tire vertically up and down, and a set of suspension frames can only drive a set of connecting seats to adjust the height up and down, which is quite limited. In addition, because the vehicle has a suspension and the body has a certain height, it cannot meet the use requirements in complex working conditions in the tunnel, when the tunnel height is not high or when the driving road surface is uneven. Utility Model Content

[0004] The utility model aims to provide a tunnel vehicle travel steering system, aiming to facilitate lowering the height of the vehicle and improving the versatility of the vehicle in the tunnel.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a tunnel vehicle travel steering system, including: a connecting beam, a steering mechanism and a lifting mechanism;

[0006] The connecting beam is horizontally arranged at the bottom of the frame, and the two ends of the connecting beam are respectively connected to the two rims and the tires mounted on the rims through two connecting seats; the connecting seat is provided with a first connecting ear and a second connecting ear on both sides along the length direction of the vehicle;

[0007] The steering mechanism comprises a steering link and a steering oil cylinder, wherein the steering link is arranged side by side on one side of the connecting beam along the length direction of the vehicle, and the two ends of the steering link are respectively hingedly connected to the two first connecting ears, and the two steering oil cylinders are arranged at the bottom of the connecting beam, and the two steering oil cylinders are respectively hingedly connected to the two second connecting ears in a direction away from the steering link, and the two steering oil cylinders are driven to move alone or in linkage to drive the said;

[0008] The lifting mechanisms are provided in pairs corresponding to the two wheel rims. One end of the lifting mechanism is connected to the connecting beam, and the other end is connected to the vehicle frame, so as to drive the connecting beam to rise and fall relative to the vehicle frame.

[0009] Furthermore, the connecting beam and the two connecting seats are connected via a connecting pin.

[0010] Furthermore, the connecting pin shaft is provided with an encoder for reading the relative rotation angle between the connecting beam and the connecting seat.

[0011] Furthermore, a zinc-aluminum alloy sleeve is provided on the outer side of the connecting pin shaft, and the encoder is fixed to the zinc-aluminum alloy sleeve by bolts.

[0012] Furthermore, the lifting mechanism includes a suspension link and a lifting cylinder, the suspension links are arranged in two groups, one end of the two suspension links in the same group are hingedly connected to the frame, the other ends of the two suspension links are respectively connected to the top surface and the side surface of the connecting beam, and the lifting cylinder is connected to the other side surface of the connecting beam.

[0013] The beneficial effects of a tunnel vehicle travel steering system provided by the utility model are:

[0014] Compared with the prior art, the utility model provides a tunnel vehicle travel steering system, in which the vehicle height can be achieved by adjusting the length of the oil cylinder to adapt to the operation of the transport vehicle on rough roads, which greatly improves the vehicle's passability and operational flexibility and reduces operational obstacles caused by terrain restrictions.

[0015] And by controlling the single movement or linkage of the cylinder, the connection seat can be rotated at different angles. Whether it is the operation of a single cylinder or the coordinated work of the cylinders, it can ensure that the vehicle can achieve fast and accurate steering in a small space, which is crucial for driving in tunnels or other environments that require fine control.

[0016] In addition, eliminating the original suspension structure not only reduces the overall height of the vehicle, but also reduces the weight of the vehicle, further improving the vehicle's ability to pass through low and narrow spaces. This is particularly important for tunnel construction or other confined space operations, and can effectively cope with more diverse construction environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A top view of a tunnel vehicle travel steering system provided by an embodiment of the utility model;

[0019] Figure 2 A bottom view of a tunnel vehicle travel steering system provided by an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the structure of the connecting pin provided in an embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the structure of the lifting mechanism provided by the embodiment of the utility model;

[0022] Figure 5 for Figure 4 Top view of the state.

[0023] In the figure: 1. tire; 2. rim; 3. encoder; 4. connecting beam; 5. connecting pin; 6. connecting seat; 61. first connecting ear; 62. second connecting ear; 7. steering cylinder; 8. steering connecting rod; 9. cylinder pin; 10. frame; 11. suspension connecting rod; 12. lifting cylinder; 13. bolt; 14. zinc-aluminum alloy sleeve. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by this embodiment more clearly understood, this embodiment is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this embodiment and are not used to limit this embodiment.

[0025] Please also read Figures 1 to 5 Now, a tunnel vehicle travel steering system provided by this embodiment is described. A tunnel vehicle travel steering system of this embodiment includes a connecting beam 4, a steering mechanism and a lifting mechanism.

[0026] Among them, the connecting beam 4 is horizontally arranged at the bottom of the frame 10, and the two ends of the connecting beam 4 are respectively connected to the two rims 2 and the tires 1 mounted on the rims 2 through two connecting seats 6; the connecting seat 6 is provided with a first connecting ear 61 and a second connecting ear 62 on both sides along the length direction of the vehicle.

[0027] The steering mechanism includes a steering link 8 and a steering cylinder 7. The steering link 8 is arranged side by side on one side of the connecting beam 4 along the length direction of the vehicle, and the two ends of the steering link 8 are respectively hingedly connected to the two first connecting ears 61. The two steering cylinders 7 are arranged at the bottom of the connecting beam 4, and the two steering cylinders 7 are respectively hingedly connected to the two second connecting ears 62 in the direction away from the steering link 8. The two steering cylinders 7 are driven to move alone or in conjunction to drive the rim 2 and the tire 1 to steer.

[0028] Two lifting mechanisms are provided corresponding to the two wheel rims 2 , one end of the lifting mechanism is connected to the connecting beam 4 , and the other end is connected to the frame 10 , so as to drive the connecting beam 4 to rise and fall relative to the frame 10 .

[0029] In the tunnel vehicle steering system of this embodiment, the vehicle height can be achieved by a lifting mechanism to adapt to the operation of the transport vehicle on a rough road surface; and by controlling the single action or linkage of the two steering cylinders, the connection seat 6 can be rotated at different angles to achieve the steering effect. The steering system eliminates the original suspension frame structure, reduces the vehicle height, improves the vehicle's passability, and can adapt to more construction conditions.

[0030] An exemplary structure of a tunnel vehicle travel steering system of this embodiment is as follows: Figure 1 As shown, the connecting beam 4 is horizontally arranged at the bottom of the frame 10, and the left and right ends of the connecting beam 4 are respectively connected to the two rims 2 and the corresponding tires 1 through the connecting seats 6.

[0031] Among them, refer to Figure 2 As shown in the figure, the connecting seat 6 is configured to be similar to a triangle, the top angle position of the connecting seat 6 is connected to the rim 2, the middle part of the bottom edge position of the connecting seat 6 is connected to the connecting beam 4, and the first connecting ear 61 and the second connecting ear 62 are respectively provided at the bottom angle positions at the front and rear ends of the bottom edge of the triangle of the connecting seat 6. In this embodiment, the connecting ear located on the front side of the connecting beam 4 is called the first connecting ear 61, and the connecting ear located on the rear side of the connecting beam 4 is called the second connecting ear 62.

[0032] like Figure 2 In the state shown, the connecting seats 6 on both sides are provided with mounting holes for the steering link 8, and the mounting hole for the steering cylinder 7 is provided below the connecting beam 4. The steering link 8 in the steering mechanism is located at the front side of the connecting beam 4, and the two ends of the steering link 8 are respectively inserted into the mounting holes through pins to achieve connection with the two first connecting ears 61.

[0033] Two steering cylinders 7 are provided, and both steering cylinders 7 are arranged in the mounting hole in the middle of the connecting beam 4 through the cylinder pin 9, and the power output ends of the two steering cylinders 7 are respectively connected to the two second connecting ears 62. When the steering action is performed, one of the steering cylinders 7 is controlled or both steering cylinders 7 are driven at the same time to drive the connecting seat 6 to rotate relative to the connecting beam 4, thereby realizing the steering of the rim 2 and the tire 1.

[0034] As a preferred embodiment, the connecting beam 4 and the two connecting seats 6 are hingedly connected by a connecting pin 5 to ensure the smoothness of the relative rotation between the two. It is understandable that the connecting beam 4 and the connecting seats 6 can also be connected by other hinged connection methods, which can be set according to actual conditions.

[0035] As a preferred embodiment, in order to ensure the steering accuracy of the rim 2 and the tire 1. In this embodiment, the connecting pin 5 is provided with an encoder 3 for reading the relative rotation angle between the connecting beam 4 and the connecting seat 6. As a specific preferred embodiment, Figure 3 As shown, a zinc-aluminum alloy sleeve 14 is sleeved on the outer side of the connecting pin shaft 5, and the encoder 3 is fixed to the zinc-aluminum alloy sleeve 14 by bolts 13. Through electrical control, the swing angle of the connecting seat 6 can be clearly determined, and the signal received by the solenoid valve can be used to control the telescopic length of the steering cylinder 7 and accurately control the swing angle of the connecting seat 6.

[0036] In addition, in this embodiment, as preferred, Figure 4 and Figure 5 As shown in , the aforementioned lifting mechanism includes a suspension link 11 and a lifting cylinder 12. The suspension link 11 is provided in two groups, and one end of the two suspension links 11 in the same group are both hingedly connected to the vehicle frame 10, and the other ends of the two suspension links 11 are respectively connected to the top surface and the side surface of the connecting beam 4, and the lifting cylinder 12 is connected to the other side surface of the connecting beam 4. The lifting cylinder 12 drives the suspension link 11 to perform telescopic action under the action of electro-hydraulic control, and the connecting beam 4 will float up and down with the telescopic movement of the lifting cylinder 12, thereby realizing the lifting action of the vehicle body.

[0037] The tunnel vehicle travel steering system of this embodiment can enable the tunnel transportation vehicle to smoothly complete the steering and transportation function in complex working conditions. In addition, the steering system eliminates the original suspension frame structure and can realize all the actions of the original suspension travel steering mechanism. The combined actions are flexible and diverse, and can be used in a variety of working conditions. In addition, this design is safe and reliable, saves space, and saves costs.

[0038] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A tunnel vehicle travel steering system, characterized in that: It comprises a connecting beam (4), a steering mechanism and a lifting mechanism; The connecting beam (4) is horizontally arranged at the bottom of the frame (10), and the two ends of the connecting beam (4) are respectively connected to the two rims (2) and the tires (1) mounted on the rims (2) through two connecting seats (6); the connecting seat (6) is provided with a first connecting ear (61) and a second connecting ear (62) on both sides along the length direction of the vehicle; The steering mechanism comprises a steering link (8) and a steering cylinder (7); the steering link (8) is arranged side by side on one side of the connecting beam (4) along the length direction of the vehicle, and the two ends of the steering link (8) are respectively hingedly connected to the two first connecting ears (61); the two steering cylinders (7) are arranged at the bottom of the connecting beam (4), and the two steering cylinders (7) are respectively hingedly connected to the two second connecting ears (62) in a direction away from the steering link (8); and the wheel rim (2) and the tire (1) are driven to steer by driving the two steering cylinders (7) to move alone or in linkage; The lifting mechanisms are provided in pairs corresponding to the two wheel rims (2); one end of the lifting mechanism is connected to the connecting beam (4), and the other end is connected to the vehicle frame (10), so as to drive the connecting beam (4) to rise and fall relative to the vehicle frame (10).

2. A tunnel vehicle travel steering system according to claim 1, characterized in that: The connecting beam (4) and the two connecting seats (6) are connected via a connecting pin (5).

3. A tunnel vehicle travel steering system according to claim 2, characterized in that: An encoder (3) for reading the relative rotation angle between the connecting beam (4) and the connecting seat (6) is provided on the connecting pin shaft (5).

4. A tunnel vehicle travel steering system according to claim 3, characterized in that: The outer side of the connecting pin shaft (5) is sleeved with a zinc-aluminum alloy sleeve (14), and the encoder (3) is fixed to the zinc-aluminum alloy sleeve (14) by means of bolts (13).

5. A tunnel vehicle travel steering system according to claim 1, characterized in that: The lifting mechanism comprises a suspension link (11) and a lifting cylinder (12); the suspension link (11) is arranged in two groups; one end of the two suspension links (11) in the same group are both hingedly connected to the vehicle frame (10); the other ends of the two suspension links (11) are respectively connected to the top surface and the side surface of the connecting beam (4); and the lifting cylinder (12) is connected to the other side surface of the connecting beam (4).

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