Transport vehicles

Abstract

The transport vehicle includes a separate first frame and a second frame. The first frame includes a first axle extending in a first direction, and the second frame includes a second axle extending in a first direction. A fork is attached to one end of the second frame in a second direction perpendicular to the first direction, and the other end of the second frame is slidably connected to one end of the first frame in the second direction. This allows for adjustment of the distance between the two axles on the first frame and the second frame, respectively.

Claims

[Claim 1] A transport vehicle comprising a first frame (10) and a second frame (20), The first frame (10) includes a first axle extending along a first direction (X), and first wheels (11) are attached to both ends of the first axle in the first direction (X). The second frame (20) includes a second axle extending along the first direction (X), and second wheels (21) are attached to both ends of the second axle in the first direction (X). A fork (22) is attached to the first end of the second frame (20) along the second direction (Y), the fork (22) extends along the second direction (Y), and the second direction (Y) is perpendicular to the first direction (X), The distance between the first axle and the second axle along the second direction (Y) is adjustable by slidably connecting one end of the first frame (10) along the second direction (Y) and the second end of the second frame (20) along the second direction (Y). A transport vehicle characterized by the following features. [Claim 2] One end of the first frame (10) and the second end of the second frame (20) are slidably connected via a guide rail mechanism (30) extending along the second direction (Y). The transport vehicle according to feature 1. [Claim 3] The guide rail mechanism (30) includes two first guide rails (31) and two second guide rails (32) that are slidably fitted together. The two first guide rails (31) extend from the first frame (10) to the second frame (20) along the second direction (Y), The two second guide rails (32) extend from the second frame 20 to the first frame (10) along the second direction (Y), The transport vehicle according to feature 2. [Claim 4] The two first guide rails (31) are provided on both sides of the first frame (10) in the second direction (Y), The two second guide rails (32) are provided on both sides of the second frame (20) in the second direction (Y), The transport vehicle according to feature 3. [Claim 5] Each of the two first guide rails (31) is provided with at least one first roller (33) on the side facing the second guide rail (32), Each of the two second guide rails (32) is provided with at least one second roller (34) on the side facing the first guide rail (31), The rotation axes of the at least one first roller (33) and the at least one second roller (34) are both set along the first direction (X). The transport vehicle according to feature 3 or 4. [Claim 6] The guide rail mechanism (30) includes a slider (52) and a linear guide (51) extending along the second direction. The slider (52) is provided on either the first frame (10) or the second frame (20), and the linear guide (51) is provided on the other of the first frame (10) or the second frame (20). The slider (52) is slidably mounted on the linear guide (51). The transport vehicle according to feature 2. [Claim 7] A drive mechanism for adjusting the axis spacing is fixedly attached to the first frame (10), and a driven body is fixedly attached to the second frame (20). The axle spacing adjustment drive mechanism drives the driven body along the second direction (Y), thereby causing the second frame (20) to slide relative to the first frame (10) along the second direction (Y). A transport vehicle according to any one of claims 1 to 6. [Claim 8] The aforementioned axis distance adjustment drive mechanism includes a hydraulic cylinder (41), The driven body includes a piston rod (42) extending along the second direction (Y), One end of the piston rod (42) is fixedly attached to the second frame (20), and the other end is slidably fitted into the hydraulic cylinder (41). The transport vehicle according to feature 7. [Claim 9] The axis spacing adjustment drive mechanism includes a ball screw (43) extending along the second direction (Y), The driven body includes a ball nut (44) attached to the ball screw (43), The ball nut (44) is fixedly attached to the second frame (20). The transport vehicle according to feature 7. [Claim 10] The second frame (20) includes a vertically positioned mast (23), which is used to raise and lower the fork (22) vertically. A transport vehicle according to any one of claims 1 to 9. [Claim 11] The system further includes a distance measuring mechanism (60) for measuring the distance between the first axle and the second axle. A transport vehicle according to any one of claims 1 to 10. [Claim 12] The invention further comprises a locking mechanism for locking the first frame (10) and the second frame (20) along the second direction (Y). A transport vehicle according to any one of claims 1 to 11.

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