A steering and walking mechanism of a tunnel trolley

Abstract

The utility model provides a kind of steering walking mechanism of tunnel trolley, it is related to tunnel construction equipment technical field, mainly for solving the problem that existing tunnel trolley cannot steer.The steering walking mechanism of the utility model includes fixed seat, rotary seat and steering oil cylinder, wherein, fixed seat is fixed in the bottom of car body, rotary seat is hinged in the lower end of fixed seat, and its hinged axis is perpendicular line;Steering oil cylinder is arranged between fixed seat and rotary seat, for promoting rotary seat to rotate around fixed seat;Wheel and driving device are provided on rotary seat, the rotation axis of wheel intersects with perpendicular line, and the center of wheel deviates from perpendicular line.The steering walking mechanism of the utility model can drive tunnel trolley to walk and steer, meet the needs of tunnel trolley construction in tunnel.Wheel of steering walking mechanism can steer in situ, not only increase the flexibility of tunnel trolley steering, but also reduce the wear of wheel.

Description

Technical Field

[0001] This utility model is specifically a steering and traveling mechanism for a tunnel trolley, relating to the field of tunnel construction equipment technology. Background Technology

[0002] A tunnel trolley is a specialized large-scale mechanical device used in tunnel construction. Based on its function, it can be categorized into rock drilling trolleys, arch erecting trolleys, wet spraying trolleys, fabric lining trolleys, lining trolleys, and curing trolleys. For ease of movement, existing tunnel trolleys are equipped with wheels, tracks, or other walking mechanisms. However, most tunnel trolleys can only travel in a straight line and cannot turn. Some tunnels are curved, requiring hydraulic outriggers to lift the tunnel trolley, and then adjusting its direction using a translation device. Clearly, this steering method is very inconvenient, necessitating the design of a walking mechanism capable of flexible steering. Utility Model Content

[0003] To overcome the shortcomings of the prior art, this utility model discloses a steering and traveling mechanism for a tunnel trolley, adopting the following technical solution: A steering and traveling mechanism for a tunnel trolley, the tunnel trolley including a body, the steering and traveling mechanism including a fixed seat, a rotating seat and a steering cylinder, wherein the fixed seat is fixed to the bottom of the body, the rotating seat is hinged to the lower end of the fixed seat, and the hinge axis is a vertical line; the steering cylinder is disposed between the fixed seat and the rotating seat, and is used to drive the rotating seat to rotate around the fixed seat; a wheel and a drive device are disposed on the rotating seat, the rotation axis of the wheel intersects the vertical line, and the center of the wheel deviates from the vertical line.

[0004] Further improvement of the technical solution: The drive device consists of a hydraulic motor and a reduction gear, and the reduction gear is connected to the wheel.

[0005] Further improvement of the technical solution: A turntable is provided at the lower end of the fixed base, and a ring and pressure plate for hinged turntable are provided at the upper end of the rotating base.

[0006] Further improve the technical solution: the rotating seat rotates around the vertical line by an angle of ±17°.

[0007] Further improvement of the technical solution: The vehicle body has four pillars arranged in a matrix.

[0008] Further improvements to the technical solution: A steering and traveling mechanism is installed at the bottom of the first two columns, and a fixed wheel traveling mechanism is installed at the bottom of the last two columns.

[0009] Further improvements to the technical solution: Steering and walking mechanisms are installed at the bottom of all four columns.

[0010] Further improve the technical solution: Let e ​​be the distance by which the center of the wheel deviates from the vertical line, then e ≤ 0.5B, where B is the width of the wheel.

[0011] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are: The steering and walking mechanism of this utility model can drive the tunnel trolley to move and turn, thus meeting the needs of the tunnel trolley in tunnel construction.

[0012] The wheels of this steering and traveling mechanism can turn on the spot, which not only increases the steering flexibility of the tunnel trolley, but also reduces wheel wear. Attached Figure Description

[0013] Appendix Figure 1 The image shown is a front view of this steering and traveling mechanism.

[0014] Appendix Figure 2 The attached image shows the attached image. Figure 1 Exploded view.

[0015] Appendix Figure 3 The image shown is a side view of the steering and traveling mechanism.

[0016] Appendix Figure 4 The diagram shows three steering states of the steering and traveling mechanism.

[0017] Appendix Figure 5 The diagram shows a steering arrangement of a tunnel trolley.

[0018] Appendix Figure 6 The diagram shows another steering arrangement of the tunnel trolley.

[0019] In the attached diagram: 1. Steering and traveling mechanism; 11. Fixed seat; 111. Turntable; 112. Hinge bracket; 12. Rotary seat; 121. Semi-annular pressure plate; 122. Ring; 123. Hinge shaft; 13. Steering cylinder; 14. Hydraulic motor; 15. Drive gear; 16. Driven gear; 17. Wheel; 18. Axle; 2. Column; 3. Vehicle body; 4. Fixed wheel traveling mechanism. Detailed Implementation

[0020] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] A steering and traveling mechanism for a tunnel trolley, relating to the field of tunnel construction equipment technology, is mainly used to solve the problem that existing tunnel trolleys cannot steer. The composition and working principle of this steering and traveling mechanism are described in detail below.

[0022] See attached document Figure 1-3 The tunnel trolley includes a body welded from profiles, with four columns 2 arranged in a matrix. The steering and traveling mechanism 1 includes a fixed base 11, a rotating base 12, and a steering cylinder 13. The fixed base 11 is fixed to the bottom of the columns 2, and the rotating base 12 is hinged to the lower end of the fixed base 11. Specifically, a turntable 111 is provided at the lower end of the fixed base 11, and a ring 122 and a pair of semi-annular pressure plates 121 are provided at the upper end of the rotating base 12. During installation, the turntable 111 is placed inside the ring 122, and the up-and-down movement of the turntable 111 is restricted by bolts and the pair of semi-annular pressure plates 121. Thus, the rotating base 12 can only rotate around the axis of the turntable 111, and cannot move up and down. Since the axis of the turntable 111 is a vertical line, it can also be said that the rotating base 12 rotates around a vertical line.

[0023] See attached document Figure 4 A hinge bracket 112 is provided on the fixed seat 11, and a hinge shaft 123 is provided on the rotating seat 12. The two ends of the steering cylinder 13 are respectively hinged between the hinge bracket 112 and the hinge shaft 123. The function of the steering cylinder 13 is to push the rotating seat 12 to rotate left and right around the fixed seat 11 and the wheel 17. In this embodiment, the rotation angle of the rotating seat 12 around the vertical line is ±17°.

[0024] A wheel 17, an axle 18, and a drive device are mounted on the rotating base 12. The drive device is connected to the wheel 17 and drives the wheel 17 to rotate. In this embodiment, the drive device consists of a hydraulic motor 14 and a reduction gear. The reduction gear consists of a driving gear 15 with fewer teeth and a driven gear 16 with more teeth. The driving gear 15 is mounted on the output shaft of the hydraulic motor 14, and the driven gear 16 is mounted on the end face of the wheel 17. It is worth noting that the drive device can also consist of a motor and a reducer.

[0025] From the appendix Figure 1 and attached Figure 3 As can be seen, wheel 17 is mounted on axle 18. The axis of rotation of wheel 17 (the axis of axle 18) intersects the axis of turntable 111 (vertical line). The center of wheel 17 deviates from the vertical line by a distance e, where e ≤ 0.5B, and B is the width of wheel 17. The intersection of the axis of rotation of wheel 17 (the axis of axle 18) with the axis of turntable 111 (vertical line) allows the weight of the tunnel trolley to be centrally loaded onto the rotating seat 12 and wheel 17 via column 2, ensuring that the rotation of the rotating seat 12 is unaffected by eccentric torque and enabling wheel 17 to turn in place. The deviation of the center of wheel 17 from the vertical line serves two purposes: firstly, it reduces wear on wheel 17; secondly, it improves the turning flexibility of wheel 17.

[0026] See attached document Figure 5-6 There are two ways to achieve steering of the tunnel trolley. One way is to install a steering and traveling mechanism 1 at the bottom of the two front columns 2 of the trolley body 3, and a fixed wheel traveling mechanism 4 at the bottom of the two rear columns 2 of the trolley body 3. The other way is to install a steering and traveling mechanism 1 at the bottom of all four columns 2, which provides better steering flexibility.

[0027] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A steering and traveling mechanism for a tunnel trolley, the tunnel trolley comprising a vehicle body, characterized in that: The steering and traveling mechanism includes a fixed seat, a rotating seat, and a steering cylinder. The fixed seat is fixed to the bottom of the vehicle body, and the rotating seat is hinged to the lower end of the fixed seat with its hinge axis being a vertical line. The steering cylinder is disposed between the fixed seat and the rotating seat and is used to drive the rotating seat to rotate around the fixed seat. A wheel and a drive device are disposed on the rotating seat. The rotation axis of the wheel intersects the vertical line, and the center of the wheel deviates from the vertical line.

2. The steering and traveling mechanism of a tunnel trolley as described in claim 1, characterized in that: The drive unit consists of a hydraulic motor and a reduction gear, with the reduction gear connected to the wheel.

3. The steering and traveling mechanism of a tunnel trolley as described in claim 1, characterized in that: A turntable is provided at the lower end of the fixed base, and a ring and pressure plate for hinged turntable are provided at the upper end of the rotating base.

4. The steering and traveling mechanism of a tunnel trolley as described in claim 1, characterized in that: The rotating seat rotates by ±17° around the vertical line.

5. The steering and traveling mechanism of a tunnel trolley as described in claim 1, characterized in that: The vehicle body has four pillars arranged in a matrix.

6. The steering and traveling mechanism of a tunnel trolley as described in claim 5, characterized in that: A steering and traveling mechanism is installed at the bottom of the first two columns, and a fixed wheel traveling mechanism is installed at the bottom of the last two columns.

7. The steering and traveling mechanism of a tunnel trolley as described in claim 5, characterized in that: Steering and walking mechanisms are installed at the bottom of each of the four pillars.

8. The steering and traveling mechanism of a tunnel trolley as described in claim 1, characterized in that: Let e ​​be the distance by which the center of the wheel deviates from the vertical line. Then e ≤ 0.5B, where B is the width of the wheel.

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