JP2019059380A - Plate member conveyance dolly - Google Patents

Abstract

To provide a plate member conveyance dolly that can easily be changed in height and length while a plate member is kept placed thereon and that is able to easily and safely convey the plate member regardless of the structure of a route along which the member is conveyed in.SOLUTION: A dolly 1 comprises: a base part 20 that has, on a front side and an upper side, a lower locking part 32 lockable a lower corner of a cage ceiling 98 and including a lower lock face 40 of an approximately L-shape as viewed from a side and that can be changed in length in an X direction; a height- direction extending part 50 that has an upper lock part 62 attached to an upper side in a Z direction so as to include an approximately flat upper lock face 70 serving as a back face of the cage ceiling 98 and capable of lock the upper side in the Z direction, that extends upward in the Z direction from the rear side in the X direction and from the upper side in the Z direction of the base part 20, and that is changeable in height; and a rack pinion mechanism 90 that adjusts the length in the X direction of the base part 20 and the height of the height-direction extending part 50.SELECTED DRAWING: Figure 1

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a carriage for carrying a plate material, and more particularly to a carriage for carrying a plate material that can be used to carry a cage ceiling of an elevator.

  As described in Patent Document 1, in an elevator, it may be necessary to replace the cage ceiling in order to renew a lighting device provided on the cage ceiling.

JP, 2013-63846, A

  When replacing the cage ceiling, the new cage ceiling is carried to the elevator, for example, in the following procedure. Specifically, first, a new car ceiling is removed from the truck and placed on a commercial truck. The cage ceiling is heavy and can be dangerous if it falls over. Therefore, the cage ceiling is carried, for example, while being supported by two maintenance workers from the left and right in the width direction and being tied to the carriage.

  In such background, there may be a place where the height is low or a place where the width is narrow in the carry-in path when carrying the cage ceiling to the cage. In such a case, the maintenance worker must lift the cage ceiling on the dolly to temporarily change the relative position of the cage ceiling with respect to the dolly or to lower the cage ceiling from the dolly in order to pass through the location. It does not. Therefore, a great deal of effort is required for the measures.

  Therefore, an object of the present invention is to carry the plate material which can easily change the height and length of the plate material in the placed state and can carry the plate material easily and safely regardless of the structure of the carry-in path. It is in providing a truck.

  In order to solve the above problems, a plate material transporting carriage (hereinafter simply referred to as a carriage) according to the present invention is a carriage used for transporting a plate material, and is a lower side in the height direction A wheel mounted on the front side and rear side in the longitudinal direction, and rotatably mounted on the front side in the longitudinal direction on the front side in the longitudinal direction with respect to the first supporting point, under the plate-like member A base portion capable of locking a side corner portion and having a lower locking portion including a substantially L-shaped lower locking surface in a side view, the length in the length direction being variable, and the plate And a substantially planar upper locking surface capable of locking the upper side in the height direction, the upper engaging portion rotatably mounted on the upper side in the height direction with respect to the second support point A stop portion, extending from the upper side in the height direction to the upper side in the height direction, and having a height It comprises a height extending portion is variable, the length of the base portion, and a size adjustment mechanism capable of adjusting the height of said height extending portion.

  According to the present invention, the lower locking portion is disposed on the upper side of the base portion and on the front side, and the upper locking portion is disposed on the upper side of the height direction extending portion extending in the height direction from the rear side of the base portion. Will be placed. Moreover, the height of the height direction extending portion and the length of the base portion can be changed by the dimension adjusting mechanism. Therefore, the inclination angle with respect to the length direction of the plate-like material in which the upper side is engaged with the upper engagement portion and the lower side is engaged with the lower engagement portion can be appropriately adjusted. As a result, when passing through a place where the height in the carry-in path is low, it is possible to easily pass the place just by inclining the plate material to an angle closer to the length direction, and when passing a narrow place. In this case, it is possible to easily pass the portion simply by inclining the plate material at an angle closer to the height direction so as to shorten the length of the carriage. Therefore, the plate material can be transported easily and safely regardless of the structure of the loading path.

  Further, in the present invention, the base portion is a base portion having a first through hole including a portion extending in the length direction, and at least a rear side end portion is accommodated in the first through hole; The first extending and retracting portion has a second through hole communicating with the first through hole, while the first extending and retracting portion has a first advancing and retracting portion capable of moving back and forth in the length direction with respect to the inner peripheral surface of the hole. A second extending and retracting portion which is supported in the height direction with respect to the inner circumferential surface of the second through hole, in which the pillar portion extending in the height direction and at least the lower end portion are accommodated in the second through hole And further includes a connecting member connecting the rear end of the first advancing and retracting portion and the lower end of the second advancing and retracting portion, and at least a part of the extending direction being deformable. The dimension adjustment mechanism is capable of adjusting the projection length of the second advancing / retracting portion projecting from the pillar portion, When withdrawal portion moves the height direction, through the connecting member to the second reciprocating unit? The first advancing and retracting portion may be moved in the longitudinal direction by a force received from the connecting member.

  According to the above configuration, the height of the extension in the height direction and the length of the base can be simultaneously adjusted only by adjusting the projection length of the second advancing and retracting part from the pillar. More specifically, it is possible to shorten the length of the base part interlocking with it simply by changing the height of the height direction extending part high, and interlocking it only by changing the height of the height direction extending part low. Can increase the length of the base part. Therefore, the inclination of the plate material with respect to the length direction can be easily adjusted by a simple operation.

  Further, in the present invention, the dimension adjusting mechanism rotates the rack provided at the rear end of the second advancing and retracting portion so as to extend in the height direction, the pinion meshing with the rack, and the pinion. And a handle for moving.

  According to the above configuration, the inclination of the plate material with respect to the length direction can be freely adjusted only by operating the handle.

  In the present invention, at least a part of the extending direction may be a steel chain, and may include a sprocket for guiding the chain and a guide portion for guiding the lower side of the chain.

  According to the above configuration, a part of the connecting member can be smoothly bent in the height direction from the height direction, and the interlocking operation of the first advancing and retracting part and the second advancing and retracting part via the connecting member can be smoothed. it can.

  In the present invention, the lower end of the lower locking portion is attached to the outer peripheral side of the first annular member rotatable around the first fulcrum, and the upper end of the upper locking portion May be attached to the outer peripheral side of a second annular member rotatable about the second fulcrum.

  According to the above configuration, the inclination angles with respect to the length direction of the lower and upper locking surfaces can be easily adjusted.

  In the present invention, the lower locking surface and the upper locking surface may be made of rubber.

  According to the above configuration, a large frictional force can be generated between the lower and upper locking surfaces and the plate-like material, and the plate-like material can be reliably locked by the lower and upper locking surfaces. Moreover, it can also be suppressed that the plate-like material is scratched by the contact with the lower and upper locking surfaces.

  According to the present invention, it is possible to easily change the height and the length of the plate material in the mounted state, and the plate material can be easily and safely transported regardless of the structure of the carry-in path.

It is a side view when the trolley | bogie which concerns on one Embodiment of this invention is seen from the side, and is a side view which shows the trolley | bogie of the state which is carrying the cage | basket ceiling as an example of plate-shaped material. It is a perspective view when the upper side of the height direction extension part of a trolley | bogie is seen from diagonally upward. It is a top view when the front side of the base part of a trolley | bogie is seen from upper direction. It is a perspective view corresponding to FIG. 2 which shows the state which the height of the said height direction extending part has become higher than the state shown in FIG. FIG. 5 is a plan view corresponding to FIG. 3 showing a state in which the length of the base portion is shorter than that shown in FIG. 3.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings. In addition, when several embodiment, a modification, etc. are included below, it is assumed from the beginning to combine those feature parts suitably, and to construct new embodiment. Further, in the following description and drawings, the X direction is the length direction of the plate material transporting carriage (hereinafter simply referred to as a carriage) 1, the Y direction is the width direction of the carriage 1, and the Z direction is It is the height direction of the carriage 1. The X direction, the Y direction, and the height direction are orthogonal to one another.

  FIG. 1 is a side view of a bogie 1 according to an embodiment of the present invention as viewed from the side (outside in the Y direction), and carries a cage ceiling 98 as an example of a plate-like member. It is a side view which shows the trolley | bogie 1 of a state. 2 is a perspective view of the upper side of the height direction extending portion 50 of the carriage 1 as viewed obliquely from above, and FIG. 3 is a front view of the base portion 20 of the carriage 1 as viewed from above It is a top view. In addition, in FIG. 1, in order to clearly show the internal structure accommodated in the base 21 and the pillar part 51 which will be described later, the internal structure is shown by a solid line.

  As shown in FIG. 1, the carriage 1 includes a base portion 20 and two height direction extending portions 50, and the base portion 20 includes a base portion 21 and two first advancing and retracting portions 22. The base 21 has a rectangular parallelepiped (plate-like) appearance and has two first through holes 24. As shown in FIG. 3, the two first through holes 24 have the same shape, and are arranged at intervals in the Y direction. Each first through hole 24 includes an X-direction extension hole 24 a and a circular arc extension hole 24 b. The X-direction extension hole 24 a defines an internal space of a substantially rectangular parallelepiped (plate-like), extends in the X direction, and has a substantially rectangular opening on the front side in the X direction.

  The arc-shaped extended hole portion 24 b is connected to the X-direction extended hole portion 24 a. The arcuate extension hole portion 24 b has an opening on the front side in the X direction and an upper opening in the Z direction. The opening on the front side in the X direction is connected to the opening on the rear side in the X direction of the X direction extending hole 24 a, and the upper opening in the Z direction faces the upper side in the Z direction. The arc-shaped extended hole portion 24b is curved in an arc shape so as to connect the opening on the front side in the X direction and the upper opening in the Z direction, and the extending direction thereof changes approximately 90 degrees in the Z direction from the X direction.

  Each first advancing and retracting portion 22 includes a main body portion 30, a front wheel 31, a lower locking portion 32, and two first annular members 33. The cross-sectional shape of the main body 30 in the YZ plane is slightly smaller than the cross-sectional shape of the first through hole 24 in the X-direction extension hole 24a in the YZ plane, and has a rectangular shape corresponding to the cross-sectional shape. . The rear end of the main body portion 30 is accommodated in the X direction extending hole portion 24 a regardless of the length of the carriage 1 in the X direction, and the portion accommodated in the X direction extending hole portion 24 a in the main body portion 30 is As the length of the base portion 20 in the X direction decreases, the length increases.

  As shown in FIG. 1, the lower locking portion 32 is provided on the front side and the upper side of the main body portion 30. In detail, on the front side and the upper side of the main body 30, a round bar-like portion 38 extending in the Y direction is provided. The length of the round bar portion 38 is longer than the width (length in the Y direction) of the main body portion 30, and the round bar portion 38 protrudes outward in the Y direction from the main body portion 30 on both sides in the Y direction of the main body portion 30. It has a part 39. The projecting portion 39 has a round bar shape having an outer diameter smaller than that of the other portion of the round rod portion 38 than the projecting portion, and the central axis of the projecting portion 39 is located on the same straight line as the central axis of the other portion. .

  Each first annular member 33 is attached to the outer circumferential surface of the projecting portion 39 by, for example, cold fitting, shrink fitting, or press fitting. The first annular member 33 rotates about the central axis of the protrusion 39 as a fulcrum when a force larger than the static friction force is applied. The central axis of the protrusion 39 constitutes a first fulcrum. In addition, even if the first annular member 33 is fitted in the Y direction to the protrusion 39 until the first annular member 33 abuts on the Y direction end face of the other portion, a retaining ring not shown is attached to the Y direction tip of the protrusion 39 thereafter. In this case, the separation of the first annular member 33 can be suppressed, which is preferable.

  The lower locking portion 32 has a substantially L-shaped shape in a side view when viewed from the outside in the Y direction, and includes a substantially L-shaped lower locking surface 40. The lower locking portion 32 includes a main body 41 made of metal or resin and a locking surface covering portion 42 made of rubber. The main body portion 41 has a substantially L-shaped shape in a side view, and the locking surface covering portion 42 is fixed to the L-shaped inner side surface of the main body portion 41 with an adhesive or the like. The front side surface of the locking surface covering portion 42 constitutes the lower locking surface 40.

  The front wheel 31 is rotatably mounted on the front side and the lower side of the main body 30 by a known structure. The front wheel 31 is attached to the main body 30 in a state in which the inclination angle of the central axis with respect to the Y direction can be varied. Further, the carriage 1 has two rear wheels 35. The two rear wheels 35 are pivotably mounted in a known structure with a space in the Y direction on the rear side and the lower side of the base 21. The rear wheel 35 is attached to the base 21 in a state in which the inclination angle of the central axis with respect to the Y direction can be varied. The height position of the lower end of the front wheel 31 substantially coincides with the height position of the lower end of the rear wheel 35.

  Each height direction extending portion 50 extends upward in the Z direction from the rear side and the upper side of the base portion 20. As shown in FIG. 2, the two height direction extending portions 50 are arranged at the same position in the X direction at intervals in the Y direction. As shown in FIG. 1, each height direction extending portion 50 has a column 51 and a second advancing and retracting portion 52, and the column 51 includes a second through hole 54 extending in the Z direction. The second through hole 54 includes a Z direction upper opening 54a and a Z direction lower opening 54b. The column 51 is joined to the base 21 by welding or the like in a state where the Z-direction lower opening 54 b communicates with the Z-direction upper opening 24 c of the first through hole 24.

  The second advancing and retracting portion 52 includes a main body portion 60, an upper locking portion 62, and two second annular members 63. The cross-sectional shape of the main body 60 in the XY plane is slightly smaller than the cross-sectional shape of the second through hole 54 in the XY plane, and has a rectangular shape corresponding to the cross-sectional shape. The lower end of the main body portion 60 is accommodated in the second through hole 54 regardless of the length of the height direction extending portion 50, and the portion of the main body portion 60 accommodated in the second through hole 54 has a height It becomes larger as the height of the direction extending portion 50 becomes lower.

  The upper locking portion 62 is provided on the upper side of the main body portion 60. At the upper end of the main body 60, a round bar-like portion 68 extending in the Y direction is provided. The length of the round bar portion 68 is longer than the width (length in the Y direction) of the main body 60, and the round bar portion 68 protrudes outward in the Y direction from the main body 60 on both sides in the Y direction of the main body 60. Part 69 is included. The protrusion 69 has a round bar shape having an outer diameter smaller than that of the other portion of the round rod portion 68 than that of the protrusion, and the central axis of the protrusion 69 is located on the same straight line as the central axis of the other portion.

  The second annular member 63 is attached to the outer peripheral surface of the protrusion 69 by, for example, cold fitting, shrink fitting, or press fitting. The second annular member 63 pivots about the central axis of the protrusion 69 when a force larger than the static friction force is applied. The central axis of the protrusion 69 constitutes a second fulcrum. In addition, even if the second annular member 63 is fitted in the Y direction to the protrusion 69 until the second annular member 63 abuts on the Y direction end face of the other portion, a retaining ring not shown is attached to the Y direction tip of the protrusion 69 thereafter. In this case, it is possible to suppress the detachment of the second annular member 63, which is preferable.

  The upper locking portion 62 has a plate shape and includes a substantially rectangular upper locking surface 70. The upper locking portion 62 includes a main body 71 made of metal or resin and a locking surface covering portion 72 made of rubber. The main body portion 71 has a substantially rectangular parallelepiped shape, and the locking surface covering portion 72 is fixed to the upper surface of the main body portion 47 with an adhesive or the like. The upper surface of the locking surface covering portion 72 constitutes the upper locking surface 70.

  The truck 1 further includes a connecting member 80 and a sprocket 81. The connecting member is, for example, a part of an endless track (Caterpillar (registered trademark)) and is a non-annular chain. More specifically, the connecting member 80 is constituted by, for example, a track in which a large number of metal pieces (links) 88 are connected. One end of the connecting member 80 is connected to the X-direction rear end of the first advancing / retracting portion 22, and the other end of the connecting member 80 is connected to the lower end of the second advancing / retracting portion 52 . The connecting member 80 is accommodated in a part of the first through hole 24 and a part of the second through hole 54 so as to straddle the connection portion between the first through hole 24 and the second through hole 54. Below the arc-shaped extended hole portion 24b, a guide portion 82 made of a material having a small frictional force, for example, a resin material is provided. A part of the connecting member 80 in the extending direction moves in the arc-shaped extending hole portion 24 b so as to be guided by the guide portion 82.

  As shown in FIG. 1, the YZ cross section of the thickest portion of the piece 88 of the connecting member 80 is slightly smaller than the YZ cross section of the X-direction extension hole 24 a of the first through hole 24. Has a shape corresponding to Further, the sprocket 81 is rotatably attached to the base 21 such that a part of the outer peripheral surface thereof is along the upper bent portion of the arc-shaped extension hole 24 b of the first through hole 24. The sprocket 81 has a plurality of protrusions not shown. The plurality of protrusions are circumferentially spaced from one another, and each protrusion extends in a radial direction. Each protrusion engages, for example, a gap generated between adjacent pieces 88 of the connecting member 80. In the connecting member 80, at least a part of a portion located in the arc-shaped extended hole portion 24b is guided by the sprocket 81. As a result, the advancing direction of the connecting member 80 can be smoothly varied from the Z direction to the X direction or from the X direction to the Z direction.

  The truck 1 further includes a rack and pinion mechanism 90. Specifically, a rack 91 extending in the Z direction is provided on the rear side surface of the second advancing and retracting unit 52 in the X direction, and a pinion 92 is rotatably attached to the rear side in the X direction on the column 51. The pinion 92 meshes with the rack 91. The pinions 92 are provided at both ends in the Y direction of a pinion shaft 94 (see FIG. 2) extending in the Y direction.

  As shown in FIG. 2, the carriage 1 further includes a gearbox 96. The pinion shaft 94 passes through the gear box 96 and is rotatably fixed to the case of the gear box via, for example, a rolling bearing. The pinion shaft 94 has a bevel gear (not shown) at a portion located in the gearbox 96. The bevel gear of the pinion shaft 94 meshes with a bevel gear provided at one end of a shaft member (not shown) extending in the X direction. A handle 97 is attached to the other end of the shaft member. The rack and pinion mechanism 90 and the handle 97 constitute a dimension adjustment mechanism.

  In the above configuration, when the user rotates the handle 97 clockwise, the shaft member rotates clockwise when viewed from the handle 97 side, and the pinion shaft 94 is rotated by two bevel gears meshing with each other. Converted to rotational power. By this conversion of rotational power, the pinion shaft 94 rotates clockwise when viewed from the pinion 92 side, and the pinion 92 (see FIG. 1) rotates clockwise. As a result, the second advancing and retracting portion 52 moves upward in the Z direction with respect to the pinion 92, the height of the height direction extending portion 50 increases, and the upper locking portion 62 moves upward in the Z direction.

  Also, when the second advancing and retracting unit 52 moves upward in the Z direction, the second advancing and retracting unit 52 is connected via the connecting member 80? The first advancing and retracting portion 22 is pulled by the connecting member 80 and moved rearward in the X direction to move into the first through hole 24. That is, the first advancing and retracting unit 22 moves backward in the X direction in conjunction with the upward movement of the second advancing and retracting unit 52 in the X direction, and the length of the base 20 in the X direction becomes short.

  Thus, the height direction extending portion 50 shifts from the state shown in FIG. 2 to the state in which the second advancing / retracting portion 52 protrudes further upward in the Z direction from the pillar portion 51 shown in FIG. The state shown in FIG. 3 is shifted to the state in which the first advancing / retracting portion 22 shown in FIG. 5 is further accommodated in the first through hole 24. Therefore, the cage ceiling 98 locked to the upper locking surface 70 of the upper locking portion 62 and the lower locking surface 40 of the lower locking portion 32 is in a state of lying more nearly in the X direction, as a result, The dolly 1 can easily pass through a portion where the height is low.

  On the other hand, when the user rotates the handle 97 counterclockwise, the shaft member rotates counterclockwise when viewed from the handle 97 side, and the pinion shaft 94 is rotated by two bevel gears meshing with each other. Converted to rotational power. By this conversion of rotational power, the pinion shaft 94 rotates counterclockwise as viewed from the pinion 92 side, and the pinion 92 (see FIG. 1) rotates counterclockwise. As a result, the second advancing and retracting portion 52 moves downward in the Z direction with respect to the pinion 92, the height of the height direction extending portion 50 decreases, and the upper locking portion 62 moves downward in the Z direction.

  Also, when the second advancing and retracting unit 52 moves downward in the Z direction, the second advancing and retracting unit 52 via the connecting member 80? The first advancing and retracting portion 22 is pushed by the connecting member 80 and moved to the front side in the X direction. That is, the first advancing and retracting unit 22 moves forward in the X direction in conjunction with the downward movement of the second advancing and retracting unit 52 in the X direction, and the length of the base portion 20 in the X direction becomes long. As described above, the YZ cross section of the thickest portion of the piece 88 of the connecting member 80 is slightly smaller than the YZ cross section of the X-direction extension hole 24 a of the first through hole 24 and corresponds to the YZ cross section Have the following shape. Therefore, the connecting member 80 is unlikely to be deformed such as being bent upward during movement, and the first advancing and retracting portion 22 is pushed out to the connecting member 80 in a smooth operation.

  Thus, the height direction extending portion 50 shifts from the state shown in FIG. 4 to the state in which the second advancing / retracting portion 52 shown in FIG. 2 is further accommodated in the second through hole 54 of the pillar portion 51 The base 20 moves from the state shown in FIG. 5 to a state in which the first advancing / retracting portion 22 shown in FIG. 3 protrudes further in the X direction from the first through hole 24. Therefore, the cage ceiling 98 locked to the upper locking surface 70 of the upper locking portion 62 and the lower locking surface 40 of the lower locking portion 32 is in a state of standing closer to the Z direction, and as a result, The dolly 1 can easily pass through a portion with a small width.

  According to the above embodiment, the lower locking portion 32 is disposed on the upper side of the base portion 20 and on the front side, and the upper locking portion 62 extends in the Z direction from the rear side of the base portion 20 in the Z direction It is arranged on the upper side of the existing portion 50. Further, the height of the height direction extending portion 50 and the length of the base portion 20 can be changed by the rack and pinion mechanism 90. Therefore, the inclination angle with respect to the X direction of the cage ceiling 98 locked to the upper locking portion 62 at the upper side and the lower locking portion 32 to the lower side can be appropriately adjusted. Therefore, the height and length of the cage ceiling 98 in the mounted state can be easily changed, and the cage ceiling 98 which is a heavy load can be easily and safely transported regardless of the structure of the carry-in path.

  In addition, the first advancing and retracting part 22 and the second advancing and retracting part 52 via the connecting member 80? I am angry. Therefore, the height of the height direction extending portion 50 and the length of the base portion 20 can be simultaneously adjusted only by adjusting the projection length of the second advancing and retracting portion 52 from the column portion 51 with the handle 97. More specifically, the length of the base portion 20 interlocked therewith can be shortened simply by changing the height of the height direction extending portion 50 high, and simply changing the height of the height direction extending portion 50 low. , The length of the base portion 20 interlocking with it can be increased. Therefore, the inclination of the cage ceiling 98 with respect to the X direction can be easily adjusted by a simple operation.

  Further, a rack 91 provided with a dimension adjustment mechanism extending in the Z direction at the rear end of the second advancing and retracting portion 52, a pinion 92 meshing with the rack 91, and a pivot for rotating the pinion 92. And a handle 97. Therefore, simply by operating the handle 97, the inclination of the cage ceiling 98 with respect to the Z direction can be easily adjusted by a simple operation.

  Further, at least a portion of the connecting member 80 is formed of a steel chain, and the carriage 1 includes a sprocket 81 for guiding the chain and a guide portion 82 for guiding the lower side of the chain. Therefore, a part of the connecting member 80 can be smoothly bent in the X direction from the Z direction, and the interlocking operation of the first advancing and retracting part 22 and the second advancing and retracting part 52 via the connecting member 80 can be made smooth.

  The lower end of the lower locking portion 32 is attached to the outer peripheral side of the first annular member 33 rotatable around the first supporting point, and the upper end of the upper locking portion 62 is the second It is attached to the outer peripheral side of the 2nd annular member 63 which can be rotated centering on a fulcrum. Thus, the inclination angles of the lower and upper locking surfaces 40 and 70 with respect to the X direction can be easily adjusted.

  Furthermore, since the lower and upper locking surfaces 40, 70 are made of rubber, a large frictional force can be generated between the lower and upper locking surfaces 40, 70 and the cage ceiling 98, The cage ceiling 98 can be reliably locked by the lower and upper locking surfaces 40, 70. In addition, damage to the cage ceiling 98 due to the contact with the lower and upper locking surfaces 40 and 70 can be suppressed.

  The present invention is not limited to the above-described embodiment and the modifications thereof, and various improvements and modifications can be made within the scope of the matters described in the claims of the present application and the equivalents thereof.

  For example, in the above embodiment, the dimension adjustment mechanism includes one rack and pinion mechanism 90, and the rack and pinion mechanism 90 simultaneously adjusts the Z direction height of the height direction extending portion 50 and the X direction length of the base portion 20. Explained. However, the dimension adjustment mechanism may include a long hole and a fastening member (for example, a bolt and a nut), and the long hole and the fastening member are used to change the fixed position of the second advancing and retracting part with respect to the post. The protrusion amount of the second advancing / retracting portion with respect to may be varied. Then, by varying the amount of protrusion, the first advancing / retracting portion connected to the second advancing / retreating portion via the connecting member is moved in the X direction, and the Z direction height of the height direction extending portion and the base portion The X direction length may be adjusted simultaneously.

  In addition, the first advancing and retracting portion 22 of the base portion 20 and the second advancing and retracting portion 52 of the height direction extending portion 50 are connected by the connecting member 80, and the height of the height direction extending portion only by one rack and pinion mechanism 90 The case where the Z direction height of the height direction extending part 50 and the X direction length of the base part 20 are simultaneously adjusted by adjusting is described. However, the Z direction height of the height direction extending portion and the X direction length of the base portion may be adjusted independently of each other. For example, the dimension adjusting mechanism is the Z direction height of the height direction extending portion And the rack and pinion mechanism or the long hole and the fastening member for adjusting the length in the X direction of the base portion. Thus, the connecting member, the sprocket and the guide may be omitted.

  Further, the case where the length of the base portion 20 and the height of the height direction extending portion 50 are adjusted by the rack and pinion mechanism 90 has been described. However, at least one of the adjustment of the length of the base portion and the adjustment of the height of the height direction extending portion may be performed using a motorized cylinder or a hydraulic jack.

  In addition, when a force larger than the static friction force is applied to the first annular member 33, the first annular member 33 pivots about the central axis of the protrusion 39, and a force larger than the static friction force is applied to the second annular member 63. And the case where it rotates centering on the central axis of the protrusion part 69 was demonstrated. However, a rolling bearing may be disposed between at least one of the first and second annular members and the projection, and the at least one may be freely rotatable relative to the projection. In this case, it is preferable that a stopper mechanism is provided to prevent the rotation of at least one of the first and second annular members after adjusting the rotation angle of at least one of the members properly. Such a stopper mechanism can be easily realized by, for example, a known mechanism such as a stopper that makes it impossible to move the wheel at the time of stop in the wheelchair.

  Although the lower and upper locking portions 32 and 62 are fixed to the first and second annular members 33 and 63 and are rotatable, at least one of the lower and upper locking portions is described. One may be non-rotatable. Although the lower and upper locking surfaces 40 and 70 are made of rubber, at least one of the lower and upper locking surfaces may be made of a material other than rubber. In addition, although the case where the plate-like material is a cage ceiling of the elevator car has been described, the plate-like material may be any material having a plate shape, for example, a glass plate or the like.

  Reference Signs List 1 bogie, 20 base portion, 21 base portion, 22 first advancing / retracting portion, 24 first through hole, 31 front wheel, 32 lower locking portion, 33 first annular member, 35 rear wheel, 40 lower locking Surface, 42, 72 Locking surface covering portion, 50 Height direction extending portion, 51 Column portion, 52 Second advancing and retracting portion, 54 Second through hole, 62 Upper locking portion, 63 Second annular member, 70 Upper side Locking surfaces, 80 connecting members, 81 sprockets, 82 guides, 90 rack and pinion mechanisms, 91 racks, 92 pinions, 97 handles, 98 cage ceilings, X direction length direction, Z direction height direction.

Claims (6)

A carriage for transporting a plate material used to transport a plate material, the carriage comprising:
A wheel mounted on the front side and rear side in the longitudinal direction below the height direction, and pivotable relative to the first fulcrum in the front side in the longitudinal direction above the height direction It is attached, has a lower locking portion that can lock the lower corner of the plate-like member and includes a substantially L-shaped lower locking surface in side view, and the length in the length direction varies The base that is possible,
It is rotatably mounted on the upper side in the height direction with respect to the second fulcrum, including a substantially planar upper locking surface which can be locked on the upper side in the height direction, which is a rear surface of the plate-like member A height direction having an upper locking portion, extending from the upper side in the height direction to the upper side in the height direction at the rear side in the length direction of the base portion and having a variable height. An extension,
A dimension adjusting mechanism capable of adjusting the length of the base portion and the height of the height direction extending portion;
A plate-shaped material transport carriage comprising: The base portion has a base portion having a first through hole including a portion extending in the length direction, and at least a rear end portion is accommodated in the first through hole, and the inner peripheral surface of the first through hole The first extending and retracting portion has a second through hole communicating with the first through hole, and extends in the height direction. And a second advancing / retracting portion which is accommodated in the second through hole and which can move back and forth in the height direction with respect to the inner peripheral surface of the second through hole,
Furthermore, the rear end portion of the first advancing and retracting portion is connected to the lower end portion of the second advancing and retracting portion, and a connecting member having a structure in which at least a part in the extending direction is deformable is provided.
The dimension adjustment mechanism is capable of adjusting the projection length of the second advancing / retracting portion projecting from the pillar portion,
When the second advancing and retracting part moves in the height direction, the second advancing and retracting part is connected via the connecting member? The plate-shaped material conveyance bogie according to claim 1, wherein the first advancing and retracting part moving in the longitudinal direction is moved by a force received from the connecting member. The dimension adjustment mechanism is
A rack provided so as to extend in the height direction at a rear end of the second advancing and retracting portion;
A pinion that engages with the rack,
A handle for rotating the pinion;
The board | plate-shaped conveyance trolley of Claim 2 which has these. At least a portion of the extending direction is constituted by a steel chain,
A sprocket for guiding the chain;
A guide for guiding the lower side of the chain;
The board | plate-shaped conveyance trolley of Claim 2 or 3 provided with these.   A lower end portion of the lower locking portion is attached to an outer peripheral side of a first annular member rotatable around the first supporting point, and an upper end portion of the upper locking portion is the second supporting point The trolley for conveying a plate material according to any one of claims 1 to 4, which is attached to an outer peripheral side of a second annular member rotatable about the center of the circle.   The plate-shaped material conveyance trolley according to any one of claims 1 to 5, wherein the lower locking surface and the upper locking surface are made of rubber.

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