Heavy-duty transport platform

Abstract

To provide a heavy-duty transport platform that can smoothly move heavy objects along curved rails and prevent derailment. [Solution] The heavy object transport platform 1 of the present invention comprises a platform unit 10 on which a heavy object A is mounted, and a wheel unit 20 that supports the platform unit 10 on two rails B, wherein the wheel unit 20 consists of two rows of wheel arrays 20a arranged in parallel in the width direction, and of the plurality of wheels 21 constituting each wheel array 20a, the frontmost wheel 21 and the last wheel 21 are fixed wheels 21a, and one or more wheels 21 sandwiched between the fixed wheels 21 are sliding wheels 21b, and the sliding wheels 21b are configured to slide freely in the width direction of the wheel array 20a relative to the platform unit 10 via sliding means 22.

Description

Technical Field

[0001] The present invention relates to a heavy object transport gantry, and more particularly to a heavy object transport gantry that can carry a heavy object and smoothly move on an arc-shaped curved rail, and can prevent wheel dropout.

Background Art

[0002] ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​When a transport platform with multiple wheels is moved along a curved rail, the multiple wheels, which are arranged in a straight line, may not be able to follow the curve, potentially causing the wheels to become immobile or the axles to be subjected to uneven pressure, leading to wheel damage. In addition, the wheels may not be able to maintain proper contact with the rail in the curved section, potentially causing the wheels to derail.

[0005] The objective of the present invention is to provide a heavy-duty transport platform that can solve the above-mentioned problems. [Means for solving the problem]

[0006] The present invention provides a heavy-duty transport platform comprising a platform unit for carrying heavy objects and a wheel unit that supports the platform unit on two rails, wherein the wheel unit consists of two parallel rows of wheel arrays in the width direction, and of the multiple wheels constituting each wheel array, the foremost and last wheels are fixed wheels, and one or more wheels sandwiched between the fixed wheels are sliding wheels, and the sliding wheels are configured to slide slidably in the width direction of the wheel array relative to the platform unit via sliding means.

[0007] The heavy-duty transport platform of the present invention comprises a sliding means consisting of a first sliding means provided on the upper part of a sliding wheel and a second sliding means provided on the lower part of the platform unit and in contact with the first sliding means, wherein one of the first sliding means and the second sliding means may be a self-lubricating sliding block and the other may be a smooth sliding surface.

[0008] The heavy-duty transport platform of the present invention may include a restricting member that protrudes downward from the platform unit outside the second sliding means, and the restricting member may restrict the maximum sliding width of the sliding wheel in the wheel array width direction and the sliding in the wheel array longitudinal direction.

[0009] In the heavy-duty transport platform of the present invention, the sliding block may be made of MC nylon (registered trademark).

[0010] The heavy-duty transport frame of the present invention may be configured such that at least one of the fixed wheels and sliding wheels can rotate horizontally relative to the frame unit via a rotating mechanism.

[0011] The heavy-duty transport platform of the present invention comprises a first rotating means provided on the upper part of the fixed wheel and / or sliding wheel, and a second rotating means provided on the lower part of the platform unit and in contact with the first rotating means, wherein at least one of the first rotating means and the second rotating means may be a self-lubricating rotating block.

[0012] The heavy-duty transport platform of the present invention includes a cylindrical rotating projection extending in the height direction on one of the first and second rotating means, and a cylindrical rotating recess extending in the height direction on the other, and the fixed wheel and / or sliding wheel may rotate horizontally around the rotating projection fitted into the rotating recess.

[0013] In the heavy-duty transport platform of the present invention, the rotating block may be a block made of MC nylon.

[0014] The heavy-duty transport platform of the present invention may have fixed wheels and / or sliding wheels equipped with flanges that guide the sides of the rails. [Effects of the Invention]

[0015] The heavy-duty transport platform of the present invention has a structure in which the sliding wheels are slidably connected in the width direction of the wheel array, so that in the curved portion of the rail, the sliding wheels slide outward, and the alignment of the wheel array automatically conforms to the curve of the rail. This ensures proper contact between multiple wheels and rails, allowing for smooth movement along the rails and effectively preventing derailment. [Brief explanation of the drawing]

[0016] [Figure 1] Diagram illustrating a heavy-duty transport platform. [Figure 2] Diagram illustrating the frame unit and wheel unit. [Figure 3] Diagram illustrating the sliding wheel [Figure 4] Explanatory drawing of the curved movement of the heavy object transport gantry [Figure 5] Explanatory drawing of Example 2

Mode for Carrying Out the Invention

[0017] Hereinafter, the heavy object transport gantry of the present invention will be described in detail with reference to the drawings. In the present invention, directional terms such as "length", "length direction", "width", "width direction", "height", etc. mean each direction when the heavy object transport gantry is arranged on two rails, with the parallel direction of the two rails being the width direction and the extending direction of the rails being the length direction.

Example

[0018] <1> Heavy object transport gantry (Fig. 1) The heavy object transport gantry 1 of the present invention is a gantry that mounts a heavy object A and moves on two rails B. The heavy object transport gantry 1 includes at least a gantry unit 10 that mounts the heavy object A and a wheel unit 20 that supports the gantry unit 10. The heavy object transport gantry 1 moves on the rail B by being towed by a towing means such as a horizontal jack (not shown). However, the towing means is not limited to a horizontal jack, and may be a wire winch, a chain hoist, etc. Also, it may have a self-propelled structure that can move by the rotation of the wheels 21 without towing. In this example, an example of transporting a shield machine, which is the heavy object A, by the heavy object transport gantry 1 in an underground structure such as a tunnel will be described. However, the usage method of the heavy object transport gantry 1 is not limited to this, and the heavy object transport gantry 1 may be used on the ground, and the heavy object A may be a tunnel boring machine, a large transformer, etc.

[0019] <1.1> Rail The rail B is a track for moving the heavy object transport gantry 1. In this example, the rail B is composed of a long base made of a shaped steel and a steel rail having a substantially I-shaped cross-section welded to the upper surface of the base. The heavy-duty transport platform 1 of the present invention is particularly effective when moving along an arc-shaped rail B, but it can also be used to move along a straight rail B that does not have a radius.

[0020] <2> Mounting unit (Figure 2) The mounting unit 10 is a unit that supports heavy object A. In this example, the support unit 10 consists of a combination of a plurality of beam members 11 extending in the width direction of the support unit 10 and parallel in the length direction, a plurality of girder members 12 extending in the length direction of the support unit 10 and connecting the plurality of beam members 11, a base 13 installed on the plurality of beam members 11, a plurality of support arms 14 installed on the plurality of beam members 11, and a plurality of restricting members 15 provided on the lower surface of the plurality of beam members 11. Structural steel can be used for the beam members 11, girder members 12, and support arms 14. The base 13 has an upper surface on which heavy object A can be mounted. In this example, the base 13 has a concave surface that corresponds to the bottom surface of the shield machine. The structure of the frame unit 10 is not limited to the above; for example, the girder member 12 may be attached below the beam member 11, and the wheel unit 20 may be attached to the girder member 12. Alternatively, a plate-like structure may be used instead of a combination of beam member 11 and girder member 12.

[0021] <2.1> Regulating material (Figure 3) The restricting member 15 is a component that restricts the sliding of the sliding wheel 21b. The restricting member 15 protrudes downward from the lower surface of the beam member 11 so as to surround the upper part of the sliding wheel 21b. In this example, a steel plate welded to the underside of the beam 11 is used as the regulating member 15. The restricting member 15 restricts the sliding wheel 21b from moving left and right, thereby restricting the maximum sliding width of the sliding wheel 21b in the width direction of the wheel array 20a. The maximum sliding width can be arbitrarily set according to the radius of curvature of the rail B. In addition, it restricts the sliding wheel 21b from moving front and rear, preventing the sliding wheel 21b from sliding in the longitudinal direction of the wheel array 20a.

[0022] <3> Wheel unit (Figure 2) The wheel unit 20 is a unit of wheels 21 that move along rail B. The wheel unit 20 consists of two rows of wheel arrays 20a arranged in parallel in the width direction. The spacing between the two rows of wheel arrays 20a corresponds to the track gauge of the two rails B.

[0023] <3.1> Wheel array (Figure 2) The wheel array 20a is a row consisting of multiple wheels 21. The wheel array 20a consists of a combination of a front fixed wheel 21a, a last fixed wheel 21a, and one or a sliding wheel 21b sandwiched between two fixed wheels 21a, and extends along the direction of extension of the rail B, i.e., the longitudinal direction of the frame unit 10. The fixed wheel 21a is fixed to the lower surface of the beam member 11. Note that "fixed" in the context of the fixed wheel 21a means that it "does not slide horizontally" in contrast to the sliding wheel 21b. The sliding wheel 21b is slidably connected to the lower surface of the beam member 11. In this example, the wheel array 20a is a combination of two fixed wheels 21a and four sliding wheels 21b. The fixed wheels 21a and / or sliding wheels 21b may be provided with flanges (not shown) on the inner and / or outer sides in the width direction of the wheel array 20a to guide the sides of the rail B.

[0024] <3.2> Sliding wheel (Figure 3) The sliding wheel 21b is a wheel that can slide freely in the width direction of the wheel array 20a. The sliding wheel 21b comprises a wheel body 21c and a support base 21d provided on the upper part of the wheel body 21c, and supports the beam member 11 on the upper surface of the support base 21d. In this example, a sliding means 22, described later, is interposed between the upper surface of the support base 21d and the lower surface of the beam member 11, and the outer circumference of the support base 21d is surrounded by a restricting member 15 provided on the lower surface of the beam member 11, thereby connecting the sliding wheel 21b so that it can slide in the width direction of the wheel array 20a. However, the sliding direction of the sliding wheel 21b is not limited to the width direction of the wheel array 20a, but may also be configured to allow sliding in the longitudinal direction of the wheel array 20a.

[0025] <3.3> Sliding means (Figure 3) The sliding means 22 is a means for sliding the sliding wheel 21b. In this example, the sliding means 22 consists of a combination of a sliding block 22a attached to the upper part of the support base 21d of the sliding wheel 21b and a sliding surface 22b formed on the lower part of the beam member 11. The sliding surface 22b is the smooth lower surface of the beam member 11. A lubricant may be applied to the sliding surface 22b to improve lubrication. However, the sliding means 22 is not limited to the above; for example, a sliding surface 22b may be formed on the upper part of the support base 21d, and a sliding block 22a may be attached to the lower part of the beam member 11. Also, the sliding means 22 may be placed inside the support base 21d rather than between the beam member 11 and the support base 21d. Furthermore, the sliding means 22 may be a self-lubricating sliding sheet, roller mechanism, rail mechanism, linear guide mechanism, etc., instead of a sliding block 22a.

[0026] <3.3.1> Sliding block (Figure 3) The sliding block 22a is a self-lubricating block material. In this example, a block made of MC nylon is used as the sliding block 22a. MC nylon is an engineering plastic with improved functionality, primarily made from polyamide (PA) resin. Because MC nylon possesses self-lubricating properties, extremely low frictional resistance, and excellent mechanical properties such as durability, heat resistance, and chemical resistance, it is particularly suitable as a material for the sliding block 22a. However, the material of the sliding block 22a is not limited to MC nylon, but may also be other known self-lubricating resins such as polyacetal (POM) or polyetheretherketone (PEEK).

[0027] <4> Curved movement of a heavy object transport platform (Figure 4) When the heavy object transport platform 1 moves along the straight section of rail B, the sliding wheels 21b of the wheel array 20a are arranged in a straight line between the front and rear fixed wheels 21a. When the heavy object transport platform 1 moves from a straight section to a curved section of rail B, the sliding wheels 21b of the wheel array 20a slide in the direction of the curve of rail B from an imaginary line connecting the front and rear fixed wheels 21a, and deform into an arc-shaped arrangement connecting the front and rear fixed wheels 21a. In the present invention, the heavy-duty transport platform 1 allows for smooth movement on rail B by autonomously adjusting the alignment of the wheel array 20a to follow the curve of rail B in the curved portion of rail B. Furthermore, by ensuring proper contact between the wheels 21 and rail B, derailment from rail B can be prevented. [Examples]

[0028] [Embodiment equipped with a rotating mechanism] In this example, at least some of the wheels 21 that make up the wheel array 20a are equipped with a rotating mechanism 23 (Figure 5). The rotating mechanism 23 is a means for rotating the wheel 21 in the horizontal direction. In this example, an example in which the rotating mechanism 23 is provided on the fixed wheel 21a is described, but it may also be provided on the sliding wheel 21b, or on both the fixed wheel 21a and the sliding wheel 21b. In this example, the rotating mechanism 23 consists of a rotating block 23a attached to the upper part of the support base 21d of the fixed wheel 21a and a rotating member 23b attached to the lower part of the beam member 11. A cylindrical rotating recess is provided at the center of the upper surface of the rotating block 23a, and a cylindrical rotating protrusion is provided at the center of the lower surface of the rotating member 23b. The rotating block 23a is a self-lubricating block material. In this example, a block made of MC nylon is used as the rotating block 23a. By fitting the rotating projection of the rotating member 23b into the rotating recess of the rotating block 23a, the wheel 21 becomes able to rotate horizontally with respect to the beam member 11, with the rotating projection as its axis. As a result, when the heavy object transport platform 1 moves along the curved section of rail B, the front and rear fixed wheels 21a rotate along the curve of rail B, and the front-to-rear direction of the fixed wheels 21a coincides with the extending direction of rail B, making movement along rail B even smoother. However, the rotating mechanism 23 is not limited to the above. For example, a rotating member 23b may be attached to the upper part of the support base 21d, and a rotating block 23a may be attached to the lower part of the beam member 11. Alternatively, the rotating projection and the rotating recess may be swapped. Furthermore, the rotating mechanism 23 may be located inside the support base 21d rather than between the beam member 11 and the support base 21d. Moreover, the rotating mechanism 23 may be a bearing mechanism using bearings or the like. [Explanation of Symbols]

[0029] 1. Heavy-duty transport platform 10 mounting units 11 Beam material 12 Girder material 13 Pedestal 14 Support arms 15 Regulated materials 20 Wheel Units 20a Wheel Array 21 wheels 21a Fixed wheel 21b Sliding wheel 21c Wheel Body 21d Support stand 22 Sliding means 22a Sliding block 22b Sliding surface 23 Rotating means 23a Rotating block 23b Rotating material A Heavy objects B Rail

Claims

1. A heavy-duty transport platform that can move along two parallel rails with a heavy object mounted on top, A mounting unit for the aforementioned heavy object, The vehicle comprises a wheel unit that supports the frame unit on the two rails, The wheel unit consists of two rows of wheel arrays arranged in parallel in the width direction. Of the multiple wheels constituting each wheel array, the frontmost and last wheels are fixed wheels, and one or more wheels sandwiched between the fixed wheels are sliding wheels. The sliding wheel is configured to slide freely in the width direction of the wheel array relative to the frame unit via a sliding means, A platform for transporting heavy objects.

2. The sliding means comprises a first sliding means provided on the upper part of the sliding wheel and a second sliding means provided on the lower part of the frame unit and in contact with the first sliding means. The first sliding means and the second sliding means are characterized in that one of them is a self-lubricating sliding block and the other is a smooth sliding surface. A heavy object transport stand according to claim 1.

3. The frame unit is provided with a restricting member that protrudes downward from the frame unit outside the second sliding means, The restricting material is characterized in that it restricts the maximum sliding width of the sliding wheel in the width direction of the wheel array and the sliding in the longitudinal direction of the wheel array. A heavy object transport platform according to claim 2.

4. The sliding block is characterized in that it is made of MC Nylon (registered trademark). A heavy object transport stand according to claim 2 or 3.

5. The fixed wheel and the sliding wheel are configured to be rotatable horizontally relative to the frame unit via a rotating mechanism, characterized in that A heavy object transport platform according to claim 1 or 2.

6. The rotating means comprises a first rotating means provided on the upper part of the fixed wheel and / or the sliding wheel, and a second rotating means provided on the lower part of the frame unit and in contact with the first rotating means. The first rotating means and the second rotating means are characterized in that at least one of them is a self-lubricating rotating block. A heavy object transport stand according to claim 5.

7. One of the first and second rotating means is provided with a cylindrical rotating projection extending in the height direction, and the other is provided with a cylindrical rotating recess extending in the height direction. The fixed wheel and / or the sliding wheel are characterized in that they rotate horizontally around the rotating projection fitted into the rotating recess, A heavy object transport stand according to claim 6.

8. The rotating block is characterized in that it is a block made of MC nylon. A heavy object transport stand according to claim 7.

9. The fixed wheel and / or the sliding wheel are characterized by having flanges that guide the side surface of the rail, A heavy object transport stand according to claim 1.

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