Lifting device

Abstract

The present invention provides a lifting device that ensures the structural stability of the lifting device while allowing the wheels to be suitably pressed against the structure, enabling it to move up and down along the structure. [Solution] The lifting device 100 is a lifting device 100 that moves up and down along a structure 200, and comprises a frame 10 surrounding the structure 200 and wheels 25 provided on the frame 10, wherein the frame 10 has a first-direction extending frame 11 that extends in a first direction, and the first-direction extending frame 11 has a first part, a second part that is movable relative to the first part in the first direction, and a biasing part that biases the second part relative to the first part in a direction that reduces the length dimension of the first-direction extending frame 11 in the first direction, thereby pressing the wheels 25 against the structure 200.

Claims

1. A lifting device that moves up and down along a structure, A frame surrounding the aforementioned structure, The wheels provided on the frame, Equipped with, The frame has a first-direction extending frame that extends in a first direction, The aforementioned first-direction extending frame is, Part 1 and, A second part that is movable relative to the first part in the first direction, A biasing part that biases the second part relative to the first part in a direction that reduces the length dimension of the first-direction extending frame in the first direction, thereby pressing the wheel against the structure, A lifting device having a lifting mechanism.

2. The lifting device according to claim 1, wherein the biasing part is a cylinder device, and the second part is biased relative to the first part by operating pressure.

3. The track section is supported by the aforementioned frame, A movable body that can move along the aforementioned track section, A lifting device according to claim 1 or 2, comprising:

4. The aforementioned moving body is A mobile body that moves along the aforementioned track section, A long attachment is routed between the mobile body and the ground, It has, The lifting device according to claim 3, wherein the intermediate portion of the accessory in the longitudinal direction is supported by the frame.

5. The lifting device is further equipped with a fall prevention device to prevent it from sliding down, The aforementioned fall prevention device is A restricting member that presses against the structure to restrict the sliding of the lifting device when it slides, A pressure contact mechanism that presses the restricting member against the structure when it slides, A lifting device according to claim 1 or 2, having the following features.

6. The aforementioned pressure contact mechanism presses the regulating member against the structure below the wheel when it slides down. The lifting device according to claim 5, wherein after the pressure contact mechanism presses the regulating member against the structure, the frame and the wheels are lowered, and the regulating member is sandwiched between the wheels and the structure.

7. The lifting device according to claim 6, wherein the restricting member is formed in such a shape that its dimensions in the first direction increase downward when pressed against the structure.

8. The aforementioned pressure contact mechanism is The link mechanism provided with the aforementioned restricting member, A second biasing unit that biases the link mechanism in a direction that extends the link mechanism during the aforementioned sliding, thereby pressing the regulating member against the structure, A lifting device according to claim 6, having the following features.

9. The lifting device according to claim 8, wherein the pressure contact mechanism presses the restricting member against the structure by extending the link mechanism in accordance with the biasing of the second biasing unit when the power supply to the lifting device is cut off or when the fall prevention device receives a trigger signal.

10. The aforementioned slip-prevention device further includes a cylinder device that, under normal circumstances, maintains the link mechanism in a shortened state against the biasing force of the second biasing part, thereby keeping the regulating member in a non-contact state with the structure. The lifting device according to claim 8, wherein, in the event of the aforementioned sliding, the operating pressure of the cylinder device is released, causing the link mechanism to extend in accordance with the biasing force of the second biasing part, and the regulating member to be pressed against the structure.

11. The aforementioned pressure contact mechanism is A swinging member that is pivotable relative to the frame and has the regulating member at its tip, A posture maintenance mechanism maintains the posture of the rocking member so that the regulating member contacts the structure at a first rocking angle, where the second distance (the distance from the rocking pivot point to the structure) is shorter than the first distance (the distance between the rocking pivot point of the rocking member and the contact portion of the regulating member with respect to the structure), It has, The lifting device according to claim 5, wherein, in the event of the aforementioned sliding, the swinging member swings in a direction that increases the second distance, thereby causing the regulating member to press against the structure.

12. The aforementioned posture maintenance mechanism is A second biasing unit that biases the swinging member to swing in a direction that increases the second distance, A cylinder device capable of oscillating the oscillating member against the biasing force of the second biasing unit, It has, Under normal circumstances, the cylinder device maintains the oscillation angle of the oscillating member at the first oscillation angle against the biasing force of the second biasing unit by the operating pressure of the cylinder device. The lifting device according to claim 11, wherein, in the event of the aforementioned sliding, the operating pressure of the cylinder device is released, and the swinging member swings in a direction that increases the second distance according to the biasing of the second biasing part.

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