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JP-7856131-B1 - Lifting and conveying device

JP7856131B1JP 7856131 B1JP7856131 B1JP 7856131B1JP-7856131-B1

Abstract

[Problem] To realize a lifting and transporting device that can be easily miniaturized as a whole. [Solution] The lifting and conveying device 100 comprises a plurality of holders 1 for holding objects to be conveyed 10, and a circulation device 2 for circulating the holders 1 along a circulation path having a lifting section. The circulation device 2 comprises a transmission member 21 for circulating the plurality of holders 1 along the circulation path, a guide mechanism 22 for guiding the transmission member 21 along the circulation path, and a guide rail 221 for guiding the movement of the plurality of holders 1 along the circulation path. Each of the plurality of holders 1 is equipped with a guided mechanism 12 that is guided by the guide rail 221, and is positioned biased toward the first axial side L1 with respect to the guide rail 221. [Selection Diagram] Figure 1

Inventors

  • 吉永 和治
  • 高木 大樹

Assignees

  • 株式会社ダイフク

Dates

Publication Date
20260511
Application Date
20241023

Claims (5)

  1. Multiple holders for holding the object to be transported, A circulation device that circulates multiple of the holders along a circulation path having an elevating section extending in the vertical direction, A lifting and lowering conveying device equipped with, The surface encompassing the entire circulation path is defined as the circulation surface, the direction perpendicular to the circulation surface is defined as the axial direction, the direction along the circulation surface that is perpendicular to the circulation path at each position on the circulation path is defined as the radial direction, the direction along the circulation path is defined as the extension direction, one side in the axial direction is defined as the axial first side, the other side in the axial direction is defined as the axial second side, one side in the radial direction is defined as the radial first side, and the other side in the radial direction is defined as the radial second side. The circulation device comprises an endless transmission member arranged along the circulation path, a guide mechanism for guiding the transmission member along the circulation path, and guide rails for guiding the movement of a plurality of holders along the circulation path. Each of the plurality of holders is equipped with a guided mechanism that is guided by the guide rail, and is positioned biased toward the first axial side with respect to the guide rail. The guide rail comprises an axial guide surface facing the axial direction and a radial guide surface facing the radial direction, The axial guide surface comprises a first axial guide surface extending along the circulation path and facing the first axial side, and a second axial guide surface extending parallel to the first axial guide surface along the circulation path and facing the second axial side. The radial guide surface comprises a first radial guide surface extending along the circulation path and facing the first radial side, and a second radial guide surface extending parallel to the first radial guide surface along the circulation path and facing the second radial side. The guided mechanism comprises an axial guide wheel that rolls in contact with the axial guide surface from the axial direction, a radial guide wheel that rolls in contact with the radial guide surface from the radial direction, and a guide wheel support mechanism that supports the axial guide wheel and the radial guide wheel so that they can roll freely. The axial guide wheel comprises a pair of first axial guide wheels that contact and roll against the first axial guide surface from the first axial side, and a pair of second axial guide wheels that contact and roll against the second axial guide surface from the second axial side. The radial guide wheel comprises a pair of first radial guide wheels that contact and roll against the first radial guide surface from the first radial side, and a pair of second radial guide wheels that contact and roll against the second radial guide surface from the second radial side . A lifting and transporting device is provided with a floating mechanism at the connection between a plurality of holders and the transmission member, which allows for variations in the axial and radial positional relationship between the holders and the transmission member .
  2. Multiple holders for holding the object to be transported, A circulation device that circulates multiple of the holders along a circulation path having an elevating section extending in the vertical direction, A lifting and lowering conveying device equipped with, The surface encompassing the entire circulation path is defined as the circulation surface, the direction perpendicular to the circulation surface is defined as the axial direction, the direction along the circulation surface that is perpendicular to the circulation path at each position on the circulation path is defined as the radial direction, the direction along the circulation path is defined as the extension direction, one side in the axial direction is defined as the axial first side, the other side in the axial direction is defined as the axial second side, one side in the radial direction is defined as the radial first side, and the other side in the radial direction is defined as the radial second side. The circulation device comprises an endless transmission member arranged along the circulation path, a guide mechanism for guiding the transmission member along the circulation path, and guide rails for guiding the movement of a plurality of holders along the circulation path. Each of the plurality of holders is equipped with a guided mechanism that is guided by the guide rail, and is positioned biased toward the first axial side with respect to the guide rail. The guide rail comprises an axial guide surface facing the axial direction and a radial guide surface facing the radial direction, The axial guide surface comprises a first axial guide surface extending along the circulation path and facing the first axial side, and a second axial guide surface extending parallel to the first axial guide surface along the circulation path and facing the second axial side. The radial guide surface comprises a first radial guide surface extending along the circulation path and facing the first radial side, and a second radial guide surface extending parallel to the first radial guide surface along the circulation path and facing the second radial side. The guided mechanism comprises an axial guide wheel that rolls in contact with the axial guide surface from the axial direction, a radial guide wheel that rolls in contact with the radial guide surface from the radial direction, and a guide wheel support mechanism that supports the axial guide wheel and the radial guide wheel so that they can roll freely. The axial guide wheel comprises a pair of first axial guide wheels that contact and roll against the first axial guide surface from the first axial side, and a pair of second axial guide wheels that contact and roll against the second axial guide surface from the second axial side. The radial guide wheel comprises a pair of first radial guide wheels that contact and roll against the first radial guide surface from the first radial side, and a pair of second radial guide wheels that contact and roll against the second radial guide surface from the second radial side . The guide mechanism comprises a plurality of rotating bodies, each around which the transmission member is wound. The first rotating body, which is at least one of the plurality of rotating bodies, is configured to be movable in the radial direction relative to the remaining rotating body, which is the second rotating body. The guide rail is divided into a first rail section whose relative position to the first rotating body is fixed, and a second rail section whose relative position to the second rotating body is fixed. The axial guide surface division gap, which is the gap formed in the dividing portion between the axial guide surface of the first rail portion and the axial guide surface of the second rail portion, is formed such that within the radial region in which the axial guide wheel contacts, the position in the extending direction differs depending on the radial position. A lifting and conveying device in which the radial guide surface division gap, which is a gap formed in the dividing portion between the radial guide surface of the first rail section and the radial guide surface of the second rail section, is formed such that within the axial region in which the radial guide wheel contacts, there are portions whose position in the extending direction differs depending on the position in the axial direction .
  3. A transport vehicle has multiple holders that hold the object to be transported, A circulation device that circulates a plurality of the holders along a circulation path having a lifting section that extends in the vertical direction, and a plurality of transfer sections arranged along the lifting section for the transfer of the objects to be conveyed between the holders, A lifting and lowering conveying device equipped with, The surface encompassing the entire circulation path is defined as the circulation surface, the direction perpendicular to the circulation surface is defined as the axial direction, the direction along the circulation surface that is perpendicular to the circulation path at each position on the circulation path is defined as the radial direction, the direction along the circulation path is defined as the extension direction, one side in the axial direction is defined as the axial first side, the other side in the axial direction is defined as the axial second side, one side in the radial direction is defined as the radial first side, and the other side in the radial direction is defined as the radial second side. The circulation device comprises an endless transmission member arranged along the circulation path, a guide mechanism for guiding the transmission member along the circulation path, and guide rails for guiding the movement of a plurality of holders along the circulation path. Each of the plurality of holders is equipped with a guided mechanism that is guided by the guide rail, and is positioned biased toward the first axial side with respect to the guide rail. The guide rail comprises an axial guide surface facing the axial direction and a radial guide surface facing the radial direction, The axial guide surface comprises a first axial guide surface extending along the circulation path and facing the first axial side, and a second axial guide surface extending parallel to the first axial guide surface along the circulation path and facing the second axial side. The radial guide surface comprises a first radial guide surface extending along the circulation path and facing the first radial side, and a second radial guide surface extending parallel to the first radial guide surface along the circulation path and facing the second radial side. The guided mechanism comprises an axial guide wheel that rolls in contact with the axial guide surface from the axial direction, a radial guide wheel that rolls in contact with the radial guide surface from the radial direction, and a guide wheel support mechanism that supports the axial guide wheel and the radial guide wheel so that they can roll freely. The axial guide wheel comprises a pair of first axial guide wheels that contact and roll against the first axial guide surface from the first axial side, and a pair of second axial guide wheels that contact and roll against the second axial guide surface from the second axial side. The radial guide wheel comprises a pair of first radial guide wheels that contact and roll against the first radial guide surface from the first radial side, and a pair of second radial guide wheels that contact and roll against the second radial guide surface from the second radial side . The transfer section includes a passage surface on which the transport vehicle travels, The holder has a mounting surface on which a forward transport vehicle that moves between itself and the passage surface is placed, The transfer section is positioned adjacent to the plurality of holders on the first axial side, and is part of a lifting and conveying device.
  4. The first radial side is the side that faces inward towards the circulation path. The lifting and conveying device according to any one of claims 1 to 3, wherein the distance between a pair of first radial guide wheels in the extending direction is smaller than the distance between a pair of second radial guide wheels in the extending direction.
  5. The guide mechanism comprises a plurality of rotating bodies, each around which the transmission member is wound. The direction along the rotation axis of the rotating body is defined as the rotation axis direction, and the direction perpendicular to the rotation axis is defined as the rotation radial direction. A fall restriction mechanism is provided to restrict the fall of the transmission member in relation to the target rotating body, which is the uppermost of the multiple rotating bodies. The lifting and conveying device according to any one of claims 1 to 3, wherein the fall restriction mechanism comprises an extension portion extending from the target rotating body in the axial direction of the rotating body along the rotation axis of the target rotating body, and a restricting portion extending outward from the extension portion in the radial direction of the rotating body.

Description

This invention relates to a lifting and conveying device comprising a plurality of holders for holding objects to be conveyed, and a circulation device for circulating the plurality of holders along a circulation path aligned in the vertical direction. An example of such a lifting and transporting device is disclosed in Japanese Patent Publication No. 2007-217134 (Patent Document 1). In the following description of this background art, the reference numerals and names in Patent Document 1 will be referenced in parentheses. The lifting and lowering conveying device (vertical conveyor 1) described in Patent Document 1 comprises a plurality of holders (conveyor tables 20) for holding the object to be conveyed (conveyed object), and transmission members (endless bodies 31, 32, 33) for circulating the plurality of holders along a circulation path. Japanese Patent Publication No. 2007-217134 Perspective view of the lifting and lowering conveying device of the embodimentFront view of the lifting and conveying device of the embodimentDiagram illustrating the first and second intervals.Figure 2 shows the IV-IV cross-sectional view of the lifting and conveying device.Figure 1 illustrates the guided mechanism shown in Figure 1.Figure 5 shows the VI-VI cross-sectional view.Figure 4 illustrates the movement of the guided mechanism.Enlarged front view of the fall protection mechanism shown in Figure 1.Figure 2 shows the guide rail in a divided state.Enlarged view of the divided section of the guide rail shown in Figure 9.Figure 9 shows a view from XI-XI. [Overview of the lifting and conveying device] As shown in Figure 1, the lifting and lowering conveying device 100 moves the object to be conveyed, which is the article to be conveyed, up and down. By using the lifting and lowering conveying device 100, even in conveying equipment that has multiple floors with different vertical positions, the object to be conveyed 10 can be moved back and forth between different floors. The object to be conveyed 10 is, for example, an article such as a product, a container for holding the product, or a part for manufacturing a product. The lifting and conveying device 100 of this embodiment will be described with reference to the drawings. As shown in Figure 1, the lifting and conveying device 100 comprises a plurality of holders 1 for holding the object to be conveyed 10, and a circulation device 2 for circulating the plurality of holders 1. In this embodiment, the lifting and conveying device 100 further comprises a plurality of transfer units 3 for the transfer of the object to be conveyed 10 between the holders 1 and the transfer units 3. Each of the plurality of transfer units 3 is positioned at a different location in the vertical direction. The circulation device 2 raises and lowers a holder 1 that has received the object to be conveyed 10 at one transfer unit 3 to a position adjacent to another transfer unit 3. Then, the holder 1 transfers the object to be conveyed 10 to the adjacent transfer unit 3, thereby moving the object to be conveyed 10 to a transfer unit 3 at a different level. Multiple holders 1 hold the objects to be transported 10 received from the transfer unit 3. The objects to be transported 10 are held by the holders 1 by being positioned at predetermined locations on the holders 1 after being transferred from the transfer unit 3. In this embodiment, the objects to be transported 10 are transport vehicles 101 capable of traveling on a running surface. The running surface includes a surface that supports the transport vehicle 101 from below. Examples of running surfaces include floors and the upper surfaces of rails. The transport vehicle 101 moves to a position where it is held by the holders 1 by traveling on the running surface. This allows the transport vehicle 101 to be held by the holders 1. In the example shown in Figure 1, the transport vehicle 101 is held by the holders 1 by moving from the upper part of the transfer unit 3 to the upper part of the holders 1. As shown in Figure 2, multiple holders 1 circulate along a circulation path CR, which has vertically extending lifting sections, via a circulation device 2. The circulation path CR is a closed path that can be repeatedly traversed. As the circulation device 2 circulates the multiple holders 1 along the circulation path CR, the multiple holders 1 repeatedly move vertically along the lifting sections. In addition to the lifting sections, the circulation path CR includes curved sections. The circulation path CR shown in Figure 2 is formed by a pair of lifting sections spaced horizontally, and a pair of curved sections that connect the upper and lower ends of the pair of lifting sections in a curved manner. Furthermore, the circulation path CR illustrated in Figure 2 is elongated in the vertical direction. In the example shown in Figure 2, the circulation device 2 circulates the multiple holders 1 counterclockwise toward the plane of the paper. Here, the