JP6311500B2 - Transport vehicle system - Google Patents

Description

  The present invention relates to a transport vehicle system that transports a load in the vicinity of a ceiling and transfers the load to a shelf or the like.

  2. Description of the Related Art Conventionally, a transport vehicle system is known in which an overhead transport vehicle travels along a rail suspended from a ceiling and transports a load near the ceiling. The ceiling transport vehicle used in the transport vehicle system includes a lift base that is suspended by a suspension member so as to be lifted and lowered, and the lift base is placed up to a mounting member on a shelf arranged along a traveling path of the ceiling transport vehicle. The baggage is transferred by lowering.

  In such a ceiling transport vehicle, the lifting platform is suspended by a flexible suspension member. Therefore, when a load is transferred between the lifting platform and the shelf mounting member, the lifting platform swings. It is desirable that the positional relationship between the mounting member and the lifting platform is fixed. In Patent Document 1, when a load is transferred between the lifting platform and the mounting member, a plate-like member provided upright on the periphery of the lifting platform is tilted to the shelf side and provided on the mounting member. The technique which fixes the positional relationship of a mounting member and a raising / lowering base by engaging with the pin which has been described is described.

Japanese Utility Model Publication No. 5-24606

  However, in order to engage the plate provided on the mounting member with the plate that has been tilted from the lifting platform, the lifting platform must be accurately positioned with respect to the mounting member. If so, it was necessary to wait until the shaking subsided.

  The present invention has been made in view of the above problems, and a transport vehicle system that can easily fix the positional relationship between a lifting platform and a mounting member when transferring a load even with simple control. The purpose is to provide.

  In order to achieve the above object, a transport vehicle system according to the present invention has a lifting platform that moves up and down in a state of being suspended by a suspension member, and travels along a rail provided on a ceiling, A transport vehicle system comprising a mounting member on which a load is transferred to and from the lifting platform of the ceiling transport vehicle, wherein the mounting member has a traveling direction and a vertical direction of the ceiling transport vehicle. It is a plate-like shape that spreads across the surface, and includes a clamped member that is attached in a state of projecting downward, and the ceiling transport vehicle has a base end pivotally supported at the lower part of the lifting platform, and is below the lifting platform. And a lower part of the mounting member, an arm that pivots and swings so that a tip part reciprocates, a fixing member that is fixed to the arm, and a fixed member that moves along the arm with respect to the fixing member. Moving part for sandwiching the sandwiched member together with the member When it is characterized by comprising an urging member for urging the moving member in a direction approaching the fixing member, and a driving portion for rotationally driving the arm.

  According to this, even when the position accuracy of the lifting platform with respect to the mounting member is not so good, it can be clamped with the clamped member provided on the mounting member by simply rotating the arm with a simple structure. Therefore, even when the control for operating the overhead traveling vehicle or the lifting platform is simplified when transferring the load between the lifting platform and the mounting member, the shaking of the lifting platform can be effectively suppressed. It becomes.

  The fixed member is provided with a fixed roller having a rotation axis in the same direction as the rotation axis of the arm, and the movement of the moving member and the rotation axis in the same direction as the rotation axis of the arm. A roller may be provided.

  According to this, even when the urging force of the urging member is increased, the fixing roller and the moving roller rotate when the arm is rotated and the sandwiched member is inserted between the fixing member and the moving member. Thus, the sandwiched member can be smoothly inserted.

  Further, the placing member is a plate-like member extending in a horizontal plane, and the sandwiched member may be formed in a state where the end of the placing member on the ceiling transport vehicle side is bent downward.

  According to this, since the sandwiched member can be formed integrally only by bending the end of the plate-like mounting member on the lifting platform side, it is possible to provide a sandwiched member having a simple structure and high strength. It becomes.

  According to the present invention, the arm extending from the lifting platform to the mounting member pinches the clamped member, whereby the positional relationship between the lifting platform and the mounting member can be fixed. Therefore, it is possible to transfer the luggage in a stable state between the lifting platform and the mounting member.

FIG. 1 is a perspective view showing a part of the transport vehicle system. FIG. 2 is a perspective view showing the relationship between the lifting platform of the ceiling transport vehicle and the mounting member. FIG. 3 is a side view showing the clamping mechanism. FIG. 4 is a side view showing a case where a plurality of clamping mechanisms are provided. FIG. 5 is a side view showing a clamping mechanism according to another embodiment.

  Next, an embodiment of a transport vehicle system according to the present invention will be described with reference to the drawings. In addition, the following embodiment is only what showed an example of the conveyance vehicle system which concerns on this invention. Accordingly, the scope of the present invention is defined by the wording of the claims with reference to the following embodiments, and is not limited to the following embodiments. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are not necessarily required to achieve the object of the present invention. It will be described as constituting a preferred form.

  FIG. 1 is a perspective view showing a part of the transport vehicle system.

  As shown in the figure, the transport vehicle system 100 transports a load by a ceiling transport vehicle 101 that travels along a rail 103 provided on the ceiling, and transfers the load between the shelf 102 and the ceiling transport vehicle 101. By doing so, it is a system that can store and carry out luggage.

  The shelf 102 can store luggage along the traveling direction (in the case of the present embodiment, the Y-axis direction in the figure) in which the overhead traveling vehicle 101 travels, and can also store luggage in the vertical direction. The mounting member 121 for mounting and storing the luggage is provided side by side in the direction along the traveling direction and in the vertical direction (Z-axis direction in the figure).

  FIG. 2 is a perspective view showing the relationship between the lifting platform of the ceiling transport vehicle and the mounting member.

  As shown in the figure, the mounting member 121 is a part of the shelf 102 on which the load is transferred to and from the lifting platform 112 of the ceiling transport vehicle 101. The mounting member 121 has a plate shape that extends in a plane including the traveling direction of the overhead conveyance vehicle 101 and the vertical direction, and includes a sandwiched member 122 that is attached in a state of protruding downward. In the case of the present embodiment, the mounting member 121 is a plate-like member extending in a horizontal plane, and the sandwiched member 122 is integrated with the end of the mounting member 121 on the ceiling transport vehicle 101 side bent downward. Is formed.

  The overhead conveyance vehicle 101 includes a suspension member 111, a lifting platform 112, and a traveling vehicle 113.

  The suspension member 111 is a member for connecting the traveling vehicle 113 and the lifting platform 112 to suspend the lifting platform 112 from the traveling vehicle 113. The suspension member 111 is a member that is flexible enough to be wound up, such as a metal wire or chain. In the case of the present embodiment, the lifting platform 112 is suspended using four suspension members 111.

  The lifting platform 112 is a platform for holding a load while being suspended from the traveling vehicle 113 by the suspension member 111. In the case of the present embodiment, a transfer device 114 is attached to the lift table 112, and the transfer device 114 moves out of the mount member 121, so that the lift table 112 and the mount member 121 are moved. It is possible to transfer packages between them.

  A clamping mechanism 104 for clamping a clamped member 122 provided on the mounting member 121 is attached to the lower part of the lifting platform 112. The pinching mechanism 104 will be described later.

  The traveling vehicle 113 is a carriage that travels along the rail 103 while hanging from the rail 103. The traveling direction of the traveling vehicle 113 shown in FIG. 1 is the Y-axis direction. In the case of the present embodiment, the traveling vehicle 113 travels by driving a motor with electric power supplied via a battery mounted thereon or a power supply line wired along the rail 103. In addition, the traveling vehicle 113 includes a motor that can wind up the suspension member 111, and the elevator 112 that is suspended by the suspension member 111 is moved up and down by winding and unwinding the suspension member 111. It has become something that can be done.

  As described above, the overhead conveyance vehicle 101 is provided along the traveling direction of the overhead conveyance vehicle 101 by the traveling vehicle 113 traveling along the rail 103 and the lifting platform 112 moving up and down relative to the traveling vehicle 113. The lifting platform 112 can be positioned on the mounting member 121 at any position on the shelf 102, and a load can be transferred between the mounting member 121 at any position.

  FIG. 3 is a side view showing the clamping mechanism.

  As shown in FIG. 2 and FIG. 2, the clamping mechanism 104 is a mechanism that protrudes from the lifting platform 112 toward the opposing mounting member 121 by rotating, and includes an arm 141, a fixing member 142, A moving member 143, an urging member 144, and a drive unit 147 are provided.

  The arm 141 has a base end (end on the negative side in the X-axis direction in the drawing) pivotally supported at the lower part of the lifting platform 112, and a distal end portion (see FIG. This is a rigid body that pivots and swings so that the end on the positive side in the middle X-axis direction reciprocates. In the case of the present embodiment, the arm 141 is pivotally supported on the lifting platform 112 via the drive unit 147, and can be rotated and oscillated by driving the drive unit 147.

  The fixing member 142 is a member that is fixed to the arm 141 and disposed on one side of the sandwiched member 122 in the protruding direction in a state where the arm 141 protrudes toward the mounting member 121. In the case of the present embodiment, the fixing member 142 is disposed on the lifting platform 112 side of the sandwiched member 122 in the protruding direction. The fixing member 142 is fixedly attached to the distal end portion of the arm 141, and is attached so as to protrude upward in a state where the arm 141 protrudes. The fixed member 142 is provided with a fixed roller 145 having a rotation axis in the same direction as the rotation axis (Y-axis direction in the drawing) of the arm 141. Specifically, the fixed roller 145 is rotatably attached to the distal end of the fixed member 142.

  Note that the fixing member 142 may be integrated with the arm 141.

  The moving member 143 is a member that moves along the arm 141 with respect to the fixed member 142 and sandwiches the sandwiched member 122 together with the fixed member 142. In the case of the present embodiment, the moving member 143 is disposed on the opposite side of the lifted base 112 of the sandwiched member 122 in the protruding direction. The moving member 143 is slidably attached to the arm 141, and is attached so as to protrude upward similarly to the fixed member 142 in a state where the arm 141 protrudes. The moving member 143 is provided with a moving roller 146 having a rotating shaft in the same direction as the rotating shaft of the arm 141 (Y-axis direction in the drawing). Specifically, the moving roller 146 is rotatably attached to the tip of the moving member 143.

  The biasing member 144 is a member that biases the moving member 143 in a direction approaching the fixed member 142. In the case of the present embodiment, the urging member 144 is a compression coil spring, and is disposed between the urging member mounting portion 149 and the moving member 143 that are arranged ahead of the moving member 143 and fixed to the arm 141. Is provided.

  When the clamped member 122 is sandwiched between the fixed member 142 and the moving member 143 by the biasing member 144, the distance between the lifting platform 112 and the clamped member 122 is longer or shorter than the reference distance within an error range. But it becomes possible to respond flexibly. In addition, after the sandwiched member 122 is sandwiched between the fixed member 142 and the moving member 143, the sandwiched member 122 can be firmly sandwiched by the biasing force of the biasing member 144.

  Further, since the fixed roller 145 and the moving roller 146 roll with respect to the sandwiched member 122, the sandwiched member 122 can be sandwiched with a small frictional force.

  Note that the fixed roller 145 may be urged in a direction approaching the moving member 143 by another urging member. Thereby, it is possible to absorb errors between the lifting platform 112 and the sandwiched member 122 also on the fixed roller 145 side.

  The drive unit 147 is a device that includes a drive source that rotationally drives the arm 141. In the case of the present embodiment, the drive unit 147 is attached to the side surface of the lower part of the lifting platform 112, and is a motor that is attached so that the traveling direction of the traveling vehicle 113 (Y-axis direction in the drawing) becomes the rotation axis. It has.

  Next, a method for fixing the lifting platform and the mounting member will be described.

  First, the lifting / lowering platform 112 is arranged at a position corresponding to the placement member 121 to be transferred. At this time, the traveling vehicle 113 travels along the rail 103, and the lifting platform 112 is moved up and down by the suspension member 111.

  Thus, while the lifting platform 112 is moving, the arm 141 is disposed below the lifting platform 112 by the driving unit 147 without protruding in the direction of the shelf 102.

  Next, when the lifting platform 112 is disposed at a position corresponding to the predetermined mounting member 121, the drive unit 147 rotates the arm 141 so as to protrude from the lower side of the lifting platform 112 toward the mounting member 121. .

  As the arm 141 rotates, the fixed roller 145 and the moving roller 146 come into contact with the lower end of the sandwiched member 122, and the arm 141 is further rotated to be fixed against the urging force of the urging member 144. The fixed roller 145 and the moving roller 146 are advanced toward the center of the sandwiched member 122 while the space between the roller 145 and the moving roller 146 is widened.

  The rotation by the drive unit 147 stops in a state where the arm 141 is substantially horizontal, and the fixed member 142 and the moving member 143 are sandwiched between the fixed roller 145 and the moving roller 146 by the biasing force of the biasing member 144. 122 is sandwiched.

  Here, even when the traveling vehicle 113 and the lifting platform 112 are moved by simple control and the lifting platform 112 is slightly shaken in the traveling direction of the traveling vehicle 113 (Y-axis direction in the figure), the flat plate-shaped sandwiched member 122 is used. Are arranged along the moving direction, and the fixed member 142 and the moving member 143 are arranged in a direction orthogonal to the traveling direction (X-axis direction in the figure), so that the lifting platform 112 is shaken in the traveling direction. The to-be-clamped member 122 can be clamped without being influenced. In addition, the shaking of the lifting platform 112 can be stopped early due to the frictional force generated when the sandwiched member 122 is sandwiched.

  As described above, the positional relationship between the lifting platform 112 and the mounting member 121 is fixed, and it becomes possible to safely transfer the load between the lifting platform 112 and the mounting member 121.

  Next, when the transfer of the cargo between the lifting platform 112 and the mounting member 121 is completed, the arm 141 is rotated by the driving unit 147 so as to return from the mounting member 121 to below the lifting platform 112. As described above, the holding of the held member 122 by the fixing member 142 and the moving member 143 is released, and the holding mechanism 104 does not interfere with the shelf 102.

  Thereby, the lifting platform 112 can move freely.

  In addition, this invention is not limited to the said embodiment. For example, another embodiment realized by arbitrarily combining the components described in this specification and excluding some of the components may be used as an embodiment of the present invention. In addition, the present invention includes modifications obtained by making various modifications conceivable by those skilled in the art without departing from the gist of the present invention, that is, the meaning described in the claims. It is.

  For example, in the present embodiment, a case has been described in which the shelves 102 are arranged only in one of the directions intersecting the traveling direction of the ceiling transport vehicle 101. However, as shown in FIG. The member 121 may be present. In this case, the clamping mechanism 104 may be provided on both sides of the lifting platform 112. Even when a load is transferred between the placing member 121 on one side and the lifting platform, by sandwiching each sandwiched member 122 provided on the placing member 121 on both sides by the plurality of sandwiching mechanisms 104, It becomes possible to stabilize the lifting platform 112 more.

  Further, as illustrated in FIG. 5, the fixed member 142 and the moving member 143 may not include the fixed roller 145 and the moving roller 146.

  The present invention can be used in an automatic warehouse, a factory, or the like that transports luggage near the ceiling and stores the luggage on a shelf.

DESCRIPTION OF SYMBOLS 100 Transport vehicle system 101 Ceiling transport vehicle 102 Shelf 103 Rail 104 Holding mechanism 111 Lifting member 112 Lifting stand 113 Traveling vehicle 114 Transfer device 121 Mounting member 122 Nipped member 141 Arm 142 Fixing member 143 Moving member 144 Energizing member 145 Fixing Roller 146 Moving roller 147 Drive unit 149 Energizing member mounting portion

Claims (3)

Luggage is transferred between a ceiling transport vehicle that travels along a rail provided on the ceiling and the lift platform of the ceiling transport vehicle that has a lift platform that moves up and down while being suspended by a suspension member. A carriage system comprising a mounting member,
The mounting member described above is
Traveling direction of the ceiling transport vehicle, and a plate-like shape extending in a plane including the vertical direction, comprising a sandwiched member attached in a state of protruding downward,
The ceiling transport vehicle is
A base end portion is pivotally supported at the lower portion of the lifting platform, and an arm that pivots and swings so that the tip portion reciprocates between the lower portion of the lifting platform and the lower portion of the mounting member,
A fixing member fixed to the arm;
A moving member that moves along the arm with respect to the fixing member and sandwiches the sandwiched member together with the fixing member;
A biasing member that biases the moving member in a direction approaching the fixing member;
A transport vehicle system comprising: a drive unit that rotationally drives the arm. The fixed member is provided with a fixed roller having a rotation axis in the same direction as the rotation axis of the arm,
The transport vehicle system according to claim 1, wherein a moving roller having a moving shaft having a rotation axis in the same direction as the rotation shaft of the arm is provided. 3. The mounting member according to claim 1 or 2, wherein the mounting member is a plate-shaped member extending in a horizontal plane, and the sandwiched member is formed in a state where the end of the mounting member on the ceiling conveyance vehicle side is bent downward. The described transport vehicle system.

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