JP6464304B1 - Tow truck - Google Patents

Abstract

To provide a towing cart capable of suitably transporting a plurality of carts. A tow truck 1 is formed in a frame shape in which a plurality of carriages 200 can be arranged on the inside, and can come into contact with a side surface of a loading platform 211 of the carriage 200 arranged on the inside, and has a frame 21 and a carriage pusher 22. A base 11 and a connecting portion 13 fixed to the base 11 and connectable to a transport vehicle. When the frame 21 moves, the cart pushing portion 22 pushes the flat cart 200 surrounded by the frame 21; The flat carriage 200 is moved. Further, a flat carriage 200 having a wheel 12 composed of a plurality of free wheels 12A and a plurality of fixed wheels 12B and surrounded by the base 11 can be stably moved. [Selection] Figure 1

Description

  Embodiments of the present invention relate to a tow truck.

  Carts and pallets are known as instruments for loading and moving luggage in a factory production line or the like. For example, the cart and the pallet are connected to or placed on a transport vehicle and are transported together with the loaded cargo. As a transport vehicle, for example, AGV (Automatic Guided Vehicle) that is guided by magnetism generated by a magnetic tape or a magnetic bar laid on a floor and runs unattended is known. A cart device for conveying an object to be conveyed is also known (see, for example, Patent Document 1).

JP 2007-230291 A

  The above-described transport method using a cart or a pallet transport vehicle is different for each object to be transported. For example, the cart is transported by being coupled to the transport vehicle, but the coupling method differs for each type of cart.

  In addition, when a plurality of carts are connected to the transport vehicle and transported at a time, there is a problem in transport stability, for example, the trajectory of the connected cart swells as the transport vehicle turns.

  Therefore, the problem to be solved by the present invention is to provide a tow cart that can suitably transport a plurality of carts.

According to an aspect of the present invention, the tow truck is formed in a frame shape in which a plurality of types of the carts selected from at least two types of carts can be arranged on the inside, and is applied to the side surface of the platform of the cart arranged on the inside. A base that can be contacted, and a connecting portion that is fixed to the base and can be connected to a transport vehicle , wherein the base is in contact with a side surface of the cargo bed of the two types of carts having different cargo bed heights. a movable body having a One attitude, a support portion for supporting each said movable member at the two position, Ru comprising a.
According to one aspect of the present invention, the tow truck is formed in a frame shape in which a plurality of carriages can be arranged on the inside, a base that can be in contact with a side surface of the carriage of the carriage arranged on the inside, and fixed to the base. And a connecting portion connectable to a transport vehicle, wherein the base is formed in a frame shape in which a plurality of the carts can be arranged inside, a fixed frame having a gate through which the cart can pass, and the gate is opened And a movable frame that is movable so as to be closed, and a holding means that is provided on the movable frame and holds the movable frame on the fixed frame in a state where the gate is closed, the holding means including the fixed frame and A magnet provided on at least one of the movable frames, and at least the other of the fixed frame and the movable frame is formed of a magnetic material, or the fixed frame Provided on both of the frame and the movable frame, a magnet for attracting each other.
According to one aspect of the present invention, the tow truck is formed in a frame shape in which a plurality of carriages can be arranged on the inside, a base that can be in contact with a side surface of the carriage of the carriage arranged on the inside, and fixed to the base. A connecting frame connectable to a transport vehicle, and the base is formed in a frame shape in which a plurality of the carts can be arranged inside, and a fixed frame having a gate through which the cart can pass rearward in the traveling direction; And a stopper that is provided so as to be able to contact the cargo bed and that restricts movement of the carriage disposed inside the base, and a locking portion that restricts movement of the stopper.

  ADVANTAGE OF THE INVENTION According to this invention, the traction trolley | bogie which can convey a some trolley suitably can be provided.

1 is a perspective view showing a configuration of a tow truck according to a first embodiment of the present invention, in which a flat carriage is towed. FIG. The perspective view which is the structure of the tow trolley | bogie and shows the state which pulls the trolley | bogie. The perspective view which shows the state which is the structure of the tow trolley | bogie, and opened the gate. The top view which shows the state which is the structure of the pulling trolley | bogie, and has arrange | positioned the flat trolley | bogie to the base. The side view which shows the state which is the structure of the pulling trolley | bogie, and has arrange | positioned the flat trolley | bogie to the base. The top view which shows the state which is the structure of the pulling trolley | bogie, and has arrange | positioned the trolley | bogie cart to the base. The side view which is the structure of the tow trolley | bogie, and shows the state which has arrange | positioned the trolley | bogie cart to the base. The top view which is the structure of the tow trolley | bogie, and shows the state which mounted the pallet in the base. The perspective view which shows the structure of the cart pushing part used for the tow cart. The perspective view which shows the structure of the cart pushing part. The perspective view which shows the structure of the cart pushing part with another attitude | position. The perspective view which shows the structure of the cart pushing part It is an example of use of the tow cart, and is a flowchart when towing a flat cart. It is an example of use of the tow cart, and is a flowchart when towing the cart. The perspective view which is a structure of the tow trolley | bogie and shows an example of use of the stopper used for the said tow trolley | bogie. The perspective view which shows the structure of the base used for the tow trolley | bogie which concerns on the 2nd Embodiment of this invention. The perspective view which is the structure of the same base and shows the state which has arrange | positioned the flat trolley | bogie to the said base. The perspective view which is a structure of the tow trolley | bogie which concerns on the 3rd Embodiment of this invention, and shows the state which pulls a flat trolley | bogie. The perspective view which is the structure of the tow trolley | bogie and shows the state which pulls the trolley | bogie. The perspective view which shows the structure of the cart pushing part used for the tow cart. The perspective view which shows the structure of the cart pushing part with another attitude | position. The perspective view which shows an example of use of the stopper used for the tow cart. The perspective view which shows another example of use of the stopper. Explanatory drawing which is a structure of the tow cart which concerns on the 4th Embodiment of this invention, Comprising: It shows in the state decomposed | disassembled into each member which comprises the said tow cart. The perspective view which shows an example of the structure at the time of accommodation of the tow truck. The perspective view which is the structure of the tow trolley | bogie which concerns on the 5th Embodiment of this invention, Comprising: The structure which pulls a flat trolley | bogie is shown. The perspective view which shows the structure which is the structure of the tow trolley | bogie, and pulls a car trolley | bogie.

(First embodiment)
Hereinafter, a tow truck 1 according to a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a configuration of the tow cart 1 and pulling the flat cart 200, and FIG. 2 is a perspective view showing the configuration of the tow cart 1 and pulling the cart 300. FIG.

  As shown in FIGS. 1 and 2, the towing cart 1 is connected to the transport vehicle 100 by the connecting portion 13, and moves along the floor surface by the wheels 12 as the transport vehicle 100 moves. The towing cart 1 is pulled by the transport vehicle 100 in a state where a plurality of flat carts 200 or carts 300 are surrounded by the base 11 or a pallet 400 is placed on the base 11.

  First, the transport vehicle 100, the flat cart 200, the car cart 300, and the pallet 400 will be described.

  The transport vehicle 100 is an automatic guided vehicle such as an AGV (Automatic Guided Vehicle) or a manned transport vehicle such as a turret truck. The transport vehicle 100 is, for example, an AGV, and in the present embodiment, the transport vehicle 100 will be described as an AGV 100 below. For example, the AGV 100 is guided by magnetism generated by a magnetic tape or a magnetic bar laid on a floor surface along a transport path for transporting a baggage in a factory premises, and travels unattended. The AGV 100 includes a connected portion 100 a that is connected to the connecting portion 13.

  The flat carriage 200 includes a loading platform 211 and a plurality of wheels 212 attached to the loading platform 211. The loading platform 211 is formed in, for example, a rectangular flat plate shape so that the luggage 500 can be placed thereon. The wheels 212 are provided one by one at, for example, the four corners of the loading platform 211 so as to be able to support the loading platform 211 and move on the floor surface. The four wheels 212 are, for example, universal wheels.

  The cart 300 includes a loading platform 311, a fence 312, and a plurality of wheels 313 attached to the loading platform 311. The loading platform 311 is formed in a rectangular flat plate shape, for example, so that the luggage 500 can be placed thereon. The fence 312 is provided, for example, perpendicular to the loading surface of the luggage 500 along the three sides of the cargo bed 311, and prevents the luggage 500 from falling off the cargo bed 311.

  The wheels 313 are provided, for example, at four corners of the cargo bed 311 so as to be able to support the cargo bed 311 and move on the floor surface. The wheel 313 is, for example, a free wheel. The wheels 313 of the car cart 300 are configured to have a larger diameter than the wheels 212 of the flat cart 200. As a result, when the wheels 212 and 313 are in contact with the ground, the cargo bed 311 of the car cart 300 is positioned higher than the cargo bed 211 of the flat cart 200.

  The pallet 400 is configured so that the luggage 500 can be placed thereon. Further, the pallet 400 is configured to be able to be placed on the base 11. The pallet 400 has a fork pocket into which a fork of a forklift can be inserted.

  Next, the tow truck 1 will be described. As shown in FIGS. 1 to 8, the towing cart 1 includes a base 11, wheels 12, and a connecting portion 13. As shown in FIGS. 1 to 12, the base 11 includes a frame 21 and a cart pushing portion 22. The base 11 is configured to be able to surround the flat carriage 200 and the car carriage 300 by the frame 21 and to mount the pallet 400. In addition, when the frame 21 moves, the base 11 moves the flat carriage 200 and the basket carriage 300 when the carriage pusher 22 pushes the flat carriage 200 and the basket carriage 300 surrounded by the frame 21.

  The frame 21 includes a fixed frame 31 having a gate 31a in part, a movable frame 32 that opens and closes the gate 31a, and an attachment portion 33. The frame 21 is formed on the inner side in a rectangular frame shape in which one type of cart selected from a plurality of types of carts can be arranged in a row in the traveling direction, and a pallet can be placed in one row in the traveling direction. In such a frame 21, the movable frame 32 is moved and the gate 31a is opened, so that the carriage can be moved and arranged inside the frame 21 through the gate 31a, and the carriage is arranged inside the frame 21. Is configured to be movable outward.

  As a specific example, the frame 21 has a plurality of flat carriages 200 or a plurality of basket carriages 300 arranged in a row in the traveling direction on the inside, or a plurality of pallets 400 arranged in a row in the traveling direction on the upper surface. In this embodiment, as shown in FIGS. 1, 4, 5, 2, 6, and 7, a plurality of frames 21, for example, six flat carriages 200, or a plurality of frames 21 are provided inside. A table, for example, two carts 300 can be arranged. Further, as shown in FIG. 8, the frame 21 is configured such that a plurality of, for example, two pallets 400 can be placed on the upper surface. The frame 21 is formed of, for example, a metal material.

  The fixed frame 31 constitutes a part of the frame 21. The fixed frame 31 is formed in, for example, a substantially rectangular frame shape in which a part of a rectangle that is long in one direction is cut out. In the present embodiment, as shown in FIGS. 1 to 3, the fixed frame 31 includes a pair of first frames 41 arranged in the short direction of the fixed frame 31 and a pair arranged in the longitudinal direction of the fixed frame 31. The second frame 42.

  The pair of first frames 41 are formed in the same length in the short direction of the fixed frame 31. The pair of second frames 42 are formed in different lengths in the longitudinal direction of the fixed frame 31. The fixed frame 31 is formed by fixing the pair of first frames 41 and the pair of second frames 42 in a rectangular frame shape with one end of the first frame 41 and one end of the short second frame 42 separated from each other. Is done. The fixed frame 31 is different in length between the pair of second frames 42, so that the length of the fixed frame 31 between the first frame 41 and the short second frame 42 of the pair of second frames 42 having different lengths is one. The part is notched.

  The fixed frame 31 forms a gate 31a by this notch. The fixed frame 31 has a guide portion 31 b that guides the movement of the movable frame 32 relative to the fixed frame 31. For example, the guide portion 31b is a recess that is provided along the moving direction of the movable frame 32 with respect to the fixed frame 31 and that is recessed in a part of the outer shape of the movable frame 32. The fixed frame 31 is configured in a double frame shape having an inner frame and an outer frame, for example, for weight reduction and strength improvement.

  The movable frame 32 constitutes the other part of the frame 21. In this embodiment, as shown in FIGS. 1 and 2, the movable frame 32 abuts on one end of one first frame 41 constituting the gate 31a and one end of a short second frame 42 constituting the gate 31a. Thus, a part of the long side of the frame 21 is formed.

  The movable frame 32 has a guided portion 32a that is guided to move with respect to the gate 31a by the guide portion 31b. The movement of the movable frame 32 is guided by the guide portion 31 b, so that, for example, the position where one end of the movable frame 32 comes into contact with one end of the short second frame 42 and the one end of the first frame 41 are adjacent to each other. Move in one direction between positions. Here, the movable frame 32 closes the gate 31 a in a state where one end of the movable frame 32 is in contact with one end of the short second frame 42. The movable frame 32 opens the gate 31 a with one end of the movable frame 32 adjacent to one end of the first frame 41. The movable frame 32 is configured in a double frame shape having an inner frame and an outer frame, for example, for weight reduction and strength improvement.

  The movable frame 32 has holding means 32b for holding the fixed frame 31 in a state where the movable frame 32 is in contact with the fixed frame 31, that is, in a state where the gate 31a of the fixed frame 31 is closed. The holding unit 32b is configured to be able to hold the movable frame 32 in a state where the gate 31a of the fixed frame 31 is closed, and to be able to release the holding of the movable frame 32 by an external force. The holding means 32b is, for example, a magnet or the like fixed to a portion of the movable frame 32 that comes into contact with the fixed frame 31.

  The holding means 32b can hold the movable frame 32 in a state in which the gate 31a of the fixed frame 31 is closed. The holding means 32b releases the holding of the movable frame 32 by an external force, thereby moving the movable frame 32 to the gate 31a of the fixed frame 31. Any configuration that allows movement in the opening direction may be used. That is, the holding means 32b may be, for example, a hook or a hook that is hooked on the fixed frame 31. However, in order to simplify the operation of the movable frame 32 for opening and closing the gate 31a of the fixed frame 31, the holding means 32b is preferably a magnet.

  The attachment portion 33 is configured to be able to attach the wheel 12. The attachment portions 33 are provided at a plurality of positions where the wheels 12 of the frame 21 are attached. For example, the attachment portion 33 is a plate-like member having a bolt hole for fixing the wheel 12 with a bolt.

  As shown in FIGS. 9 to 12, the cart pushing portion 22 includes a plurality of rectangular frame-shaped movable bodies 51 each having a rotation shaft 52, and a plurality of support portions that are provided integrally with the frame 21 and support the movable body 51. 53. The cart pusher 22 projects the movable body 51 inside the frame 21. For example, the cart pushing section 22 is provided with one movable body 51 on the rear end side of the frame 21 and two on both side sides in the traveling direction, and two support sections 53 are provided for one movable body 51. Provided.

  Note that the number of the movable bodies 51 can be set as appropriate. For example, the movable body 51 may have a configuration in which only one movable body 51 is provided on each side of the frame 21 in the traveling direction. In this case, the movable body 51 may be of a length that can be in contact with all of the carriages 200 and 300 arranged in the frame 21, and a part of the carriages may be used as long as the moving direction can be guided. The structure which contacts 200 and 300 may be sufficient. Further, three or more movable bodies 51 in the traveling direction may be provided on each of both end sides on the side of the frame 21.

  Further, the carriage pusher 22 can change the posture of the movable body 51 into two postures by rotating the movable body 51 around the rotation shaft 52, and supports the movable body 51 in each of the two postures. By supporting by the portion 53, the posture of the movable body 51 can be maintained.

  As a specific example, the carriage pusher 22 has a first posture in which the movable body 51 abuts against the side surface of the loading platform 211 of the flat carriage 200 disposed inside the frame 21, and the movable body 51 is the loading platform 311 of the cage carriage 300. The movable body 51 is supported by the support portion 53 in each of the second postures in contact with the side surfaces. Further, the cart pushing section 22 is configured to be able to place the pallet 400 on the plurality of movable bodies 51 in either the first posture or the second posture, in this embodiment, the first posture. .

  Here, the first posture is a posture in which the main surface of the movable body 51 extends in a direction horizontal to the floor surface, and the second posture is a posture in which the main surface of the movable body 51 is perpendicular to the floor surface. It is the attitude | position extended in the direction which becomes. Here, the main surface of the movable body 51 is a surface having a rectangular frame shape.

  The cart pushing portion 22 is configured such that when the movable body 51 is in the first posture, the movable body 51 can contact the side surface of the loading platform 211 of the flat carriage 200 and the pallet 400 can be placed on the movable body 51. The Further, the cart pusher 22 is configured such that the movable body 51 can come into contact with the side surface of the cargo bed 311 of the car cart 300 when the movable body 51 is in the second posture.

  As a specific example, the movable body 51 includes a rotation shaft 52, a pair of first members 61 provided with the rotation shaft 52, and a cross section orthogonal to the longitudinal direction formed in a U-shape. A second member 62 fixed to one end, a third member 63 fixed to the other end of the pair of first members 61, a pair of fourth members 64 fixed to both ends of the third member 63, and a pair of A fifth member 65 fixed to the tip of the fourth member 64.

  For example, the rotation shaft 52 may have a configuration in which a pair of shaft-shaped members such as bolts are provided on the pair of first members 61, and a single shaft provided between the pair of first members 61. An axial member may be used. The rotating shaft 52 is fixed to the first insertion hole 61 a and is movably inserted into the support portion 53.

  The first member 61 is provided at one end, and includes a first insertion hole 61a through which the rotary shaft 52 is inserted, an escape portion 61b that prevents the movable body 51 from interfering with the support portion 53 when the posture is changed, and a protrusion 61c. Have. The length of the first member 61 in the longitudinal direction is such that the third member 63 can come into contact with the loading platform 211 of the flat carriage 200 in the first posture, and the fifth member 65 is the loading platform of the basket carriage 300 in the second posture. The length is approximately the same height as 311. The protrusion 61c is provided on a surface opposite to a surface where the pair of first members 61 are opposed to each other. The protrusion 61c is provided adjacent to the first insertion hole 61a, and is provided on the other end side of the first member 61 with respect to the first insertion hole 61a.

  The second member 62 is disposed between the pair of first members 61. The surface of the third member 63 facing the surface fixed to the first member 61 abuts against the side surface of the loading platform 211 of the flat carriage 200 and presses the flat carriage 200.

  The fourth member 64 connects the third member 63 and the fifth member 65. The fourth member 64 also arranges the fifth member 65 downward in the first posture and on the center side of the frame 21 in the second posture by the first member 61, the second member 62, and the third member 63. In the second posture, the fourth member 64 moves the fifth member 65 so that the first member 61 is separated from the wheel 313 of the car cart 300 when the fifth member 65 comes into contact with the cargo bed 311 of the car cart 300. The first member 61 is offset. The fifth member 65 constitutes a portion in which the lower surface in the first posture can come into contact with the cargo bed 311 of the car cart 300.

  The support part 53 supports the movable body 51 in the first posture and the movable body 51 in the second posture, respectively. For example, the support portion 53 includes a first support member 71 and a second support member 72. For example, the support unit 53 supports the movable body 51 in the first posture by the first support member 71 and the second support member 72, and supports the movable body 51 in the second posture by the second support member 72.

  The first support member 71 is provided on the upper surface of the frame 21, and the upper surface is formed in a thin plate shape that extends inward of the frame 21 along the upper surface of the frame 21. In the first support member 71, a part of the lower surface of the first member 61 of the movable body 51 in the first posture is in contact with the upper surface.

  The second support member 72 is provided on the upper surface of the frame 21, extends in a direction perpendicular to the upper surface of the frame 21, and extends along a direction orthogonal to the axial direction of the rotation shaft 52, Provided in the second wall portion 72b and the first wall portion 72a along the axial direction of the rotation shaft 52, on the center side of the second insertion hole 72c through which the rotation shaft 52 is inserted, and the upper end of the first wall portion 72a. It has the hollow part 72d. The second support member 72 is configured in an L shape in a top view.

  The first wall portion 72 a supports the rotation shaft 52. The second wall portion 72b abuts on the outer surface of the frame 21 of the first member 61 of the movable body 51 in the second posture, and restricts the rotational movement of the movable body 51 around the rotation shaft 52.

  The second insertion hole 72c is provided in the first wall portion 72a, extends in the direction of gravity, is configured in a semicircular shape having a diameter slightly larger than the outer diameter of the rotation shaft 52, and has a central portion at the rotation shaft. The width is slightly larger than the outer diameter of 52. That is, the second insertion hole 72c is configured to be able to rotate the inserted rotation shaft 52 and to be moved by a predetermined distance in the direction of gravity.

  The recess 72d is a recess with which the protrusion 61c provided on the first member 61 of the movable body 51 in the second posture is engaged. The hollow part 72d is provided in a part of the upper end of the first wall part 72a.

  The support portion 53 is configured so that the upper surface of the first support member 71 and the upper end of the second insertion hole 72c of the second support member 72 are in contact with the lower surface of the first member 61 of the movable body 51 and the rotary shaft 52 in the first posture. By contact, the movable body 51 is restricted from moving downward from the first posture around the rotation shaft 52. In other words, the movable body 51 in the first posture has a part of the first member 61 and the second member 62 in contact with the upper surface of the first support member 71, and the rotating shaft 52 provided on the first member 61. It is supported by contacting the upper end of the second insertion hole 72c.

  The support portion 53 includes a main surface on the inner side of the frame 21 of the second wall portion 72 b of the second support member 72, an inner surface on the inner side of the frame 21 of the second insertion hole 72 c of the second support member 72, and a recess portion. 72d comes into contact with the outer side surface of the frame 21 of the first member 61 of the movable member 51 in the second posture, the rotation shaft 52, and the protrusion 61c, so that the movable member 51 is moved from the second posture to the rotation shaft 52. The movement that rotates to the center is restricted. In other words, in the movable body 51 in the second posture, a part of the main surface of the first member 61 on the outer side of the frame 21 abuts on the main surface of the second wall 72b on the inner side of the frame 21, and the rotating shaft 52 Is in contact with the lower inner surface of the second insertion hole 72c, and the protrusion 61c is supported by engaging with the recess 72d.

  The wheel 12 can support the base 11 stably in a state where the base 11 surrounds the plurality of flat carriages 200 or the plurality of basket carriages 300 or a plurality of pallets 400 are placed. Is provided. The plurality of wheels 12 are constituted by a plurality of universal wheels 12A, or a plurality of universal wheels 12A and a single or a plurality of fixed wheels 12B. Preferably, the plurality of wheels 12 includes a plurality of universal wheels 12A and a plurality of fixed wheels 12B. However, when fixed wheels are used for the wheels 212 and 313 of the carriages 200 and 300, the base 11 is configured by only the plurality of free wheels 12A and does not have to have the fixed wheels 12B.

  Here, the free wheel 12A is a so-called free caster, and includes, for example, a vehicle 12a that rotates around one axis, and a mounting bracket 12b that changes the direction of the vehicle 12a. The vehicle 12a of the universal wheel 12A is oriented in the traveling direction of the towing cart 1 by the mounting bracket 12b. The fixed wheel 12B is a so-called fixed caster, and includes, for example, a vehicle 12a that rotates around one axis, and a mounting bracket 12c that fixes the direction of the vehicle 12a.

  The fixed wheel 12B is disposed on the base 11 so that the direction of the vehicle 12a is the same as the straight traveling direction of the AGV 100 connected to the traction vehicle 1. The direction of the vehicle 12a of the fixed wheel 12B arranged in this way is fixed in the traveling direction of the AGV 100 connected regardless of the traveling direction of the traction carriage 1 by the mounting bracket 12c. As a result, the fixed wheel 12 </ b> B becomes a resistance against the traveling of the tow truck 1 when the direction of the car 12 a is different from the traveling direction of the tow truck 1.

  As a specific example, the plurality of wheels 12 are provided with at least one free wheel 12A at each of the four corners of the frame 21 of the base 11 and one fixed wheel 12B at the center of the two long sides of the frame 21, respectively. It is done.

  In addition, the attachment position of the wheel 12 provided in the base 11, a number, and a kind are not limited to this. For example, the base 11 may be further provided with one fixed ring 12B at the center of the two long sides of the frame 21. Further, the base 11 may have a configuration in which one free wheel 12A is provided at each of the two corners of the frame 21, and one fixed ring 12B is provided at each of the other two corners of the frame 21. The tow cart 1 is used for towing the flat cart 200 or the cart 300, and at least one of the wheels 212 of the flat cart 200 is a fixed wheel, and at least one of the wheels 313 of the cart 300 is at least one of the wheels 313. If it is a fixed wheel, the wheels 12 provided on the base 11 may all be universal wheels 12A. That is, the mounting position, the number, and the type of the wheels 12 provided on the base 11 are the same as long as the base 11 can stably move the enclosed flat cart 200 and the cage cart 300 and the placed pallet 400. Can be set as appropriate.

  In the present embodiment, the fixed frame 31 has three corners, an end portion on the gate 31a side of one first frame 41 constituting the gate 31a, a central portion of one first frame 41 constituting the gate 31a, and One free ring 12A is provided at the end of the short second frame 42 on the gate 31a side, and one fixed ring 12B is provided at the center of the long second frame 42. The movable frame 32 is provided with one universal ring 12A at the end of the movable frame 32 that abuts one end of the first frame 41 when the gate 31a is closed, and the short second frame when the gate 31a is closed. Two fixed rings 12 </ b> B are provided at the other end of the movable frame 32 that abuts against 42.

  The connection part 13 is comprised so that the base 11 and AGV100 can be connected. The connecting portion 13 is pulled by the AGV 100 so that the base 11 to which the wheels 12 are attached, the plurality of flat carts 200 or the plurality of carts 300 surrounded by the base 11 or the plurality of pallets 400 placed on the base 11 , Configured to be towable. As a specific example, as shown in FIGS. 1 to 3, the connecting portion 13 is provided integrally with the frame 21, for example, and has a rectangular frame-shaped base portion 81 extending perpendicularly to the upper surface of the frame 21, And a fixing portion 82 that is integrally provided and fixed to the connected portion 100a of the AGV 100. The base 81 holds the fixing portion 82 at a height that can fix the fixing portion 82 to the connected portion 100a. Further, the base 81 has a reinforcing portion 81a that supports the rectangular frame portion from the pulling direction in order to improve the tensile strength. The fixing part 82 is formed in a rod shape extending from the base part 81 to the connected part 100a, and is configured to be fixable to the connected part 100a. For example, when the connected portion 100a of the AGV 100 is configured to have a cylindrical pin, the fixing portion 82 has a hole 82a into which the pin is inserted at the tip, and the pin and the hole 82a are engaged with each other. The fixing part 82 is fixed to the connected part 100a.

  Next, an example of use of the tow truck 1 will be described with reference to FIGS. FIG. 13 is a flowchart when towing the flat carriage 200, and FIG. 14 is a flowchart when towing the cart 300. The difference in each configuration is that the movable body 51 is in the first posture. The difference is whether it is the second posture.

  First, in a state where the movable body 51 is in the first posture, the operator moves the movable frame 32 with a foot or a hand and opens the gate 31a (steps ST1 and ST6). At this time, the movable body 51 is set to the first posture or the second posture according to the carriages 200 and 300 to be conveyed.

  In addition, when changing the attitude | position of the movable body 51 from a 1st attitude | position to a 2nd attitude | position, while rotating the movable body 51 around the rotating shaft 52, the movable body 51 is lifted upwards, and the protrusion 61c is a hollow part. 72d is made to face, and then the movable body 51 is moved downward to engage the protrusion 61c with the recess 72d. When the posture of the movable body 51 is changed from the second posture to the first posture, the movable body 51 is lifted upward, and then the movable body 51 is rotated around the rotation shaft 52 and the movable body 51 is rotated. Is moved downward. That is, the posture of the movable body 51 is changed by moving in the direction of gravity and rotating around the rotation axis 52.

  Next, the worker moves the carriages 200 and 300 on which the luggage 500 is placed on the loading platform 211 from the gate 31a into the base 11 and arranges it in the base 11 (steps ST2 and ST7). When the flat carriage 200 is used and the luggage 500 is larger than the flat carriage 200, a plurality of flat carriages 200 are connected as shown in step ST2 of FIG. It is only necessary to place the luggage 500 thereon and pass through the gate 31a.

  Next, the operator moves the movable frame 32 and closes the gate 31a (steps ST3 and ST8). At this time, since the movable frame 32 is provided with a magnet as the holding means 32b, and the fixed frame 31 is formed of a magnetic material, when the movable frame 32 is moved and the holding means 32b approaches the fixed frame 31, the suction is performed. A force is generated, and the movable frame 32 is held by the fixed frame 31.

  In this state, the carriages 200 and 300 on which the luggage 500 is placed are transported by the AGV 100. Next, when the carriages 200 and 300 are transported to the destination, the operator moves the movable frame 32 to open the gate 31a (steps ST4 and ST9), and sequentially passes the carriages 200 and 300 through the gate 31a. The movable frame 32 is removed from the base 11 and the gate 31a is closed (steps ST5 and ST10). Through these steps, the towing cart 1 is pulled by the AGV 100 and the carts 200 and 300 are conveyed.

  As shown in FIG. 8, when the luggage 500 is towed and placed on the pallet 400, the tow cart 1 does not open and close the gate 31 a, and the pallet 400 is moved to the first posture by the forklift. Just place it on top.

  According to the towing cart 1 configured as described above, the flat cart 200 or the cart 300 can be disposed inside the base 11, or the pallet 400 can be placed on the base 11 and transported. That is, according to the tow cart 1, a plurality of types of carts selected from a plurality of types of carts can be conveyed at a time.

  Moreover, according to the tow truck 1, it was set as the structure which rotates the movable body 51, and it was set as the structure which can press the trolley | bogie 200,300 from which height differs in the two different attitude | positions respectively. That is, by setting the movable body 51 to the first posture, the cart pushing portion 22 can push the side surface of the loading platform 211 of the flat cart 200 disposed inside the base 11. Further, the cart pushing section 22 having the movable body 51 in the second posture can push the side surface of the loading platform 311 of the cart 300 arranged inside the base 11.

  In addition, the cart pushing section 22 with the movable body 51 in the first posture can place the pallet 400 on the movable body 51. For this reason, the tow cart 1 is arranged on the base 11 by the AGV 100 connected to the connecting portion 13 by selectively arranging a plurality of types from the plurality of types of carts 200 and 300 and the pallet 400 in the base 11 or on the base 11. The carts 200 and 300 or the pallet 400 can be pulled.

  Further, the movable body 51 is configured such that the cart 200 having a low height is pressed by the third member 63 in the first posture, and the cart 300 having a high height is pressed by the fifth member 65 in the second posture. With this configuration, when the cart 300 is pressed by the fifth member 65, the first member 61 is positioned on the outer side of the frame 21 with respect to the pressing surface of the fifth member 65. Even if the position is a shape protruding from the outer peripheral edge side of the loading platform 311, it is possible to prevent the wheels 313 from interfering with the frame 21 and the first member 61.

  Further, the traction cart 1 has at least one fixed wheel 12 </ b> B directed to the straight direction of the AGV 100 and is disposed on the base 11, so that the fixed wheel 12 </ b> B can generate resistance in the traveling direction when the traction cart 1 turns. it can. For this reason, even if centrifugal force is applied at the time of turning, the traction cart 1 can prevent the trajectory of the traction cart 1 from expanding and can move along a predetermined trajectory. As a result, the tow cart 1 can prevent a lateral shake that is orthogonal to the traveling direction in movement, and can safely transport a plurality of carts 200, 300 or pallets 400. As described above, the towing cart 1 can suitably transport the plurality of carts 200 and 300 or the pallet 400.

  Moreover, the tow cart 1 has a configuration including a gate 31a. For this reason, the tow cart 1 can easily move and place the cart inside the base 11 and move the cart outside the base 11 by opening the gate 31a. It is possible to prevent the carriages 200 and 300 from being detached from the base 11 by closing.

  Further, the towing cart 1 is configured such that the movable frame 32 can be linearly moved in one direction with respect to the fixed frame 31 by the guide portion 31b and the guided portion 32a, thereby opening and closing the gate 31a. However, only a linear operation is required, and the gate 31a can be easily opened and closed. Further, the traction cart 1 uses the holding means 32b as a magnet, so that the movable frame 32 is moved relative to the fixed frame 31 when the gate 31a is opened and closed, and the movable frame 32 is fixed when the gate 31a is closed. The frame 31 can be held.

  For this reason, even when the operator is transporting the carriages 200 and 300, it is easy to operate the movable frame 32 with feet or the like and to hold the movable frame 32 on the fixed frame 31. The tow cart 1 has high usability.

  As described above, according to the towing cart 1 according to the embodiment, a plurality of types of carts and pallets can be selectively towed selectively.

  In addition, in order that the traction trolley | bogie 1 can convey three types of trolley | bogies, it is good also as a structure which can press a trolley | bogie in three places from which the movable body 51 differs in height. In the case of such a movable body 51, for example, the first member 61 may be provided with a sixth member positioned at a position lower than the fifth member 65 in the second posture. Moreover, the structure which the height of a loading platform is the same, and conveys a different kind of trolley | bogie may be sufficient.

  Further, the tow cart 1 may be configured to be able to regulate the movement of the tow cart 1 in the traveling direction of the carts 200 and 300 in the base 11. For example, as shown in FIG. 15, the tow cart 1 may be configured to further include a stopper 90 that restricts movement of the carts 200 and 300 in the traveling direction in the base 11. The stopper 90 is, for example, a case where the number of carriages 200 and 300 arranged inside the base 11 is smaller than the number of carriages 200 and 300 arranged inside the base 11. It is attached when the gap is wide. The stopper 90 is, for example, fixed to the two movable bodies 51 facing sideways in the traveling direction, and configured to be able to abut on a side surface located forward in the traveling direction of the cargo beds 211 and 311 of the carriages 200 and 300.

  For example, the stopper 90 is fixed to the third member 63 of the movable body 51 that faces the stopper 90, and is disposed between the third members 63 at a position that contacts the side surface of the loading platform 211 of the flat carriage 200. Note that the stopper 90 has a base portion that is towed at the end, such as a configuration in which a part of the third member 63 is clamped by a fastening member such as a bolt or screw, or a configuration in which the stopper 90 is fixed to a part of the third member 63 by a fastening member Any configuration that does not deviate from 11 can be set as appropriate.

  As an example, a description will be given of an example using the base 11 on which six flat carts 200 shown in FIG. 15 can be arranged. The stopper 90 is positioned adjacent to the three flat carts 200 arranged inside the base 11. It is fixed to the movable body 51 so as to be able to come into contact with the side surface of the loading platform 211 of the car 200. Thereby, the leading flat carriage 200 in the traveling direction of the three flat carriages 200 contacts the stopper 90, and the trailing flat carriage 200 in the traveling direction is provided on the rear end side in the traveling direction of the fixed frame 31. 51 abuts. Such a stopper 90 can regulate movement of the carriages 200 and 300 in the base 11 accompanying a change in the speed of the towing carriage 1 such as an emergency stop of the transported carriage 100 connected thereto.

  That is, the tow cart 1 can stably transport the carts 200 and 300 by providing the stopper 90 even when the number of carts 200 and 300 arranged inside the base 11 is smaller than the number that can be arranged. . The shape of the stopper 90 and the method of attachment are not limited to the above-described example, and can be set as appropriate as long as movement of the carriages 200 and 300 disposed inside the base 11 can be restricted. For example, the stopper 90 may be configured to be fixed to one movable body 51, or may be shaped like a breaker.

  Moreover, although the movable frame 32 demonstrated the structure which linearly moves to one direction, it is not limited to this, For example, the structure which opens and closes the gate 31a by rotating around one axis | shaft may be sufficient. Further, by adjusting the width of the gate 31a without providing the movable frame 32, the carriage disposed at the position facing the gate 31a in the base 11 interferes with the gate 31a, so that when the towing carriage 1 is towed, It is good also as a structure which a trolley | bogie does not jump out of the gate 31a.

  Further, in the above-described example, the configuration in which the movable body 51 is provided in order to convey the carts having different loading platform heights has been described. However, the present invention is not limited to this, and the thickness of the inner surface of the base 11 is different from each other. It is possible to make it possible to press different carts by making each of the thicknesses that can be pressed, and it may be a double frame having two inner surfaces in the direction of gravity.

(Second Embodiment)
Next, a tow truck 1A according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 16 is a perspective view showing a configuration of a base 11A used in a tow truck 1A according to the second embodiment of the present invention, and FIG. 17 shows a configuration of the base 11A in which a flat carriage is arranged on the base 11A. FIG. Note that, in the configuration of the tow cart 1A according to the second embodiment, the same reference numerals are given to the same configurations as those of the tow cart 1 according to the first embodiment described above, and detailed description thereof is omitted.

  As illustrated in FIGS. 16 to 17, the tow cart 1 </ b> A includes a base 11 </ b> A having a frame 21 </ b> A instead of the base 11 having the frame 21. The frame 21 </ b> A is different from the frame 21 in that it does not have the movable frame 32, and other configurations are the same as the frame 21. As shown in FIGS. 16 to 17, the fixed frame 31 included in the frame 21 </ b> A has, for example, a substantially rectangular frame shape that does not have one side of the rear end in the traveling direction, in other words, the rear end is notched in the traveling direction. Is done. The fixed frame 31 included in the frame 21A constitutes a gate 31a by the cutout.

  The base 11A includes a cart pushing portion 22 provided at the front end side and the both side ends of the frame 21A in the traveling direction, a stopper 90A detachably disposed on the movable body 51, and a stopper 90A disposed on the movable body 51. And a locking portion 91 that restricts the movement of.

  The stopper 90 </ b> A is configured to be disposed on the movable body 51 in the first posture and the second posture. The stopper 90 </ b> A is disposed on the movable body 51 in the first posture or the second posture, thereby closing the gate 31 a and on the side surface located rearward in the traveling direction of the loading platforms 211 and 311 of the carriages 200 and 300. It is configured to be able to contact.

  The locking part 91 regulates the movement of the locking member 91a that restricts the movement of the stopper 90A disposed on the movable body 51 in the first posture and the stopper 90A that is disposed on the movable body 51 in the second posture. And a locking member 91b. The locking members 91a and 91b are paired with the two movable bodies 51 that face the side in the traveling direction so as to be able to contact the stopper 90A disposed on the movable body 51 in the first posture and the second posture, respectively. Provided. In addition, the pair of locking members 91a and 91b are provided at a plurality of locations from the inner surface of the front base 11A in the traveling direction at intervals equivalent to the width in the traveling direction of the carriages 200 and 300, respectively. For example, in order to control the movement of the stopper 90 </ b> A at two locations in one movable body 51, the locking member 91 a and the locking member 91 b are arranged at four positions at the same position in the advancing direction. Provided. That is, the movement of the stopper 90A is restricted by contacting the four locking members 91a or the four locking members 91b.

  In the base 11 </ b> A configured in this way, the locking portion 91 or the fourth member 64 of the movable body 51 restricts the movement of the stopper 90 </ b> A disposed on the movable body 51 in the direction opposite to the traveling direction. As a result, the base 11A has the stopper 90A by disposing the stopper 90A at a position to be locked to the locking members 91a and 91b closest to the end of the single or plural carts 200 and 300 arranged inside the base 11A. Thus, the side surfaces of the loading platforms 211 and 311 of the last carts 200 and 300 in the traveling direction can be pressed.

  If the stopper is configured to come into contact with the two locking members, there is a possibility that the stopper is inclined with respect to the movable body 51 and fits into the movable body 51 and is difficult to be removed from the movable body 51. However, the movement of the stopper 90 </ b> A is restricted by the four locking members 91 a or the four locking members 91 b, so that the stopper 90 </ b> A is prevented from being inclined and fitted to the movable body 51. The attachment to and removal from the movable body 51 is easy.

  As a specific example, as shown in FIG. 17, four flat carts 200 are arranged inside the base 11 </ b> A using a base 11 </ b> A capable of arranging six flat carts 200 or two basket carts 300 inside. An example will be described. The locking portions 91 are provided at two locations at intervals equal to the width in the traveling direction of the car cart 300, and the locking members 91a provided at five locations at intervals equal to the width in the traveling direction of the flat cart 200. And a locking member 91b. Here, four stoppers 90A are arranged on the fourth locking member 91a from the front in the traveling direction so that the movement in the direction opposite to the traveling direction is restricted. The side surface of the loading platform 211 of the last flat carriage 200 can be pressed in the traveling direction.

  In addition, the arrangement | positioning location and number of latching members 91a and 91b can be suitably set according to the width | variety and the number of the advancing direction of the trolley | bogie 200 and 300 arrange | positioned inside the base 11A.

  Further, the locking members 91 a and 91 b may be clips that can be arbitrarily attached to and detached from the movable body 51. Further, the locking members 91a and 91b may be configured to be fixed to the movable body 51 by a fastening member such as a screw. That is, the locking portion 91 can be appropriately designed as long as the movement in the direction opposite to the traveling direction of the stopper 90A disposed on the base 11A can be restricted.

  In the above-described example, the example in which the stopper 90 </ b> A and the locking portion 91 are disposed on the movable body 51 has been described. However, the present invention is not limited to this. The stopper 90A and the locking part 91 can be brought into contact with the side surface located rearward in the traveling direction of the loading platforms 211 and 311 of the carriages 200 and 300, and the locking part 91 is opposite to the traveling direction of the stopper 90A. As long as the movement of the direction can be regulated, it may be provided at any location on the base 11A.

  In addition to the above-described configuration, as shown in FIGS. 16 and 17, the bases 11 and 11 </ b> A are arranged on the front end side in the traveling direction in the traveling direction of the luggage 500 placed on the loading platforms 211 and 311 of the carts 200 and 300. There may be provided a restricting plate 92 for restricting movement such as falling or jumping out. Such a restricting plate 92 can prevent damage to the luggage 500 when the movement of the luggage 500 is regulated, because the part that regulates the movement of the luggage 500 is made of a cushioning material. Further, as shown in FIGS. 16 and 17, the movable body 51 includes a cushioning material 93 that absorbs an impact when the carrier 211, 311 collides with the surface of the carriage 200, 300 that contacts the carrier 211, 311. It may be. In addition, the buffer material 93 may be provided in one surface contact | abutted with the loading platforms 211 and 311 of the carts 200 and 300 of the stopper 90A.

(Third embodiment)
Next, a tow truck 1B according to a third embodiment of the present invention will be described with reference to FIGS. FIG. 18 is a perspective view showing a configuration of the tow cart 1B and pulling the flat cart 200. FIG. 19 is a perspective view showing a configuration of the tow cart 1B and pulling the cage cart 300B. is there. Note that, in the configuration of the tow truck 1B according to the third embodiment, the same reference numerals are given to the same structures as the tow trucks 1 and 1A according to the first and second embodiments described above, and detailed description thereof will be given. Is omitted.

  As shown in FIGS. 18 and 19, the tow cart 1B includes a base 11B, wheels 12, and a connecting portion 13. The base 11B includes a frame 21A, a cart pushing portion 22B, and a stopper 90B. Prepare. The towing cart 1B has a configuration in which the cart pushing portion 22B and the stopper 90B are different from the above-described towing cart 1A. In addition, the tow cart 1B is an example in which a cart different from the tow carts 1 and 1A is towed, and an example that can pull the cart 300B that is higher in height than the flat cart 200 and narrow in the direction perpendicular to the traveling direction. explain. Here, the cart 300B includes a cargo bed 311B having a narrower width perpendicular to the traveling direction than the flat cart 200, a fence 312B provided perpendicular to the load placement surface along the three sides of the cargo bed 311B, and wheels 313. .

  In the cart pushing portion 22B, for example, a member provided on one end side of the first member 61B provided with the rotation shaft 52 contacts the side surface of the loading platform 211 of the flat carriage 200 in the first posture, and the first member 61B The member provided on the other end side is disposed inside the base 11B and the movable body 51B that contacts the side surface of the loading platform 311B of the cart 300B in the second posture, and the movable body 51B has the first posture and the second posture. And a support portion 53B capable of maintaining the posture.

  Specifically, as shown in FIGS. 20 and 21, the movable body 51B is fixed to the rotating shaft 52, the pair of first members 61B provided with the rotating shaft 52, and one end of the pair of first members 61B. The second member 62B, the third member 63B fixed to the other end of the pair of first members 61B, the fourth member 64B fixed to the middle between the ends of the pair of first members 61B, and the first member 61B. A pair of fifth members 65B fixed in a direction perpendicular to the first member 61B and ends of the pair of fifth members 65B are fixed to the other ends of the first member 61B. A sixth member 66B.

  The first member 61B is provided at a predetermined distance from one end that contacts the side surface of the loading platform 211, and includes a first insertion hole 61a through which the rotation shaft 52 is inserted, and a protrusion 61c. Here, the predetermined distance is a length by which the movable body 51B protrudes more inside the base 11B than the support portion 53B in the first posture.

  Further, the length of the first member 61B in the longitudinal direction is such that the flat carriage 200 can be disposed between the two movable bodies 51B facing each other in the first posture, and is fixed to the other end side in the second posture. The fifth member 65B is formed to have a length that is substantially the same height as the cargo bed 311B of the cart 300B.

  The protrusion 61c is provided on a surface opposite to a surface where the pair of first members 61 are opposed to each other. The protrusion 61c is provided adjacent to the first insertion hole 61a, and is provided on the other end side of the first member 61 with respect to the first insertion hole 61a.

  The second member 62B is disposed between one end sides of the pair of first members 61B. The second member 62B is a surface orthogonal to the surface fixed to the first member 61B, and the surface facing the inside of the base 11B in the first posture abuts the side surface of the loading platform 211 of the flat carriage 200, Press the car 200.

  The third member 63B is disposed between the other end sides of the pair of first members 61B. The third member 63B contacts the upper surface of the frame 21A or the upper surface of the attachment portion 33 in the first posture.

  The fourth member 64B is disposed between the ends of the pair of first members 61B. The fourth member 64B contacts the upper surface of the frame 21A or the upper surface of the attachment portion 33 in the first posture. That is, the third member 63B and the fourth member 64B are in contact with the upper surface of the frame 21A or the upper surface of the attachment portion 33, respectively, so that the movement of the movable body 51B in the first posture is restricted.

  The fifth member 65B is formed in a predetermined length and is fixed in a direction orthogonal to the first member 61B. Here, the predetermined length is such that, in the second posture of the movable body 51B, the wheel 313 is movable when the sixth member 66B fixed to the tip of the fifth member 65B comes into contact with the loading platform 311B of the cart trolley 300B. The length does not interfere with the body 51B.

  The sixth member 66B is disposed between the pair of fifth members 65B. In the second posture of the movable body 51B, the sixth member 66B has a surface that faces the inside of the base 11B abuts against a side surface of the cargo bed 311B of the cart trolley 300B and presses the cart trolley 300B.

  The support part 53B supports the movable body 51B in the second posture. Further, the support portion 53B is configured to be able to change the movable body 51B from the first posture to the second posture.

  The support part 53B includes, for example, a first support member 71B and a second support member 72B. The first support member 71 </ b> B is provided on the inner side surface of the frame 21 </ b> A, extends in a direction perpendicular to the upper surface of the frame 21 </ b> A, and extends along a direction orthogonal to the axial direction of the rotation shaft 52. 71a, the second wall portion 71b along the axial direction of the rotation shaft, the first wall portion 71a, the second insertion hole 71c through which the rotation shaft 52 is inserted, and the center of the upper end of the first wall portion 71a. It has the recessed part 71d provided. The first support member 71B is configured in an L shape in a top view.

  The first wall portion 71 a supports the rotation shaft 52. The second wall 71b abuts on the outer surface of the first member 61B of the movable body 51B in the second posture on the outer side of the frame 21A, and restricts rotational movement about the rotation shaft 52 of the movable body 51B.

  The second insertion hole 71c is provided in the first wall portion 71a, extends in the direction of gravity, is configured in a semicircular shape with an end portion slightly larger in diameter than the outer diameter of the rotation shaft 52, and has a central portion at the rotation shaft. The width is slightly larger than the outer diameter of 52. That is, the second insertion hole 71c is configured to be able to rotate the inserted rotation shaft 52 and to move by a predetermined distance in the direction of gravity.

  The recess portion 71d is a recess that engages with the protrusion 61c provided on the first member 61B of the movable body 51B in the second posture. The depression 71d is provided at a part of the upper end of the first wall 71a.

  The second support member 72B is provided at the lower end of the first support member 71B, and the upper surface thereof is formed in a thin plate shape that extends inward of the frame 21A along the upper surface of the frame 21A. In the second support member 72B, the lower end surfaces of the pair of first members 61B of the movable body 51B in the second posture abut on the upper surface.

  The support portion 53B moves so that the movable body 51B rotates further downward from the first posture around the rotation shaft 52 when the upper end of the second insertion hole 71c of the first support member 71B contacts the rotation shaft 52. regulate.

  In the movable body 51B in the first posture, the upper end of the second insertion hole 71c of the first support member 71B comes into contact with the rotation shaft 52 by the support portion 53B, and the third member 63B and the fourth member 64B are in the frame 21A. The movement in the direction of gravity is regulated by contacting the upper surface of the lens or the upper surface of the mounting portion 33.

  The support portion 53B includes a main surface on the inner side of the frame 21A of the second wall portion 71b of the first support member 71B, an inner surface of the second insertion hole 71c of the first support member 71B, and an inner surface on the inner side of the frame 21A. 71d comes into contact with the outer side surface of the frame 21A of the first member 61B of the first member 61B of the movable body 51B in the second posture, the rotation shaft 52, and the protrusion 61c, so that the movable body 51B is moved from the second posture to the rotation shaft 52. The movement that rotates to the center is restricted.

  In the movable body 51B in the second posture, the lower end surface of the first member 61B is in contact with the upper surface of the second support member 72B, and the main surface outside the frame 21A of a part of the first member 61B is the second wall portion. 71b is in contact with the inner main surface of the frame 21A, the rotating shaft 52 is in contact with the lower inner surface of the second insertion hole 71c, and the protrusion 61c is supported by engaging with the recess 71d.

  As shown in FIGS. 22 and 23, the stopper 90B includes, for example, two outer bodies 90a, an inner body 90b, and a cushioning material 93 provided on one surface in contact with the loading platforms 211 and 311 of the carriages 200 and 300. Have The stopper 90B is coupled using bolts or the like so that the two outer bodies 90a can move with respect to the inner body 90b. The stopper 90B has a variable overall length as the outer body 90a moves relative to the inner body 90b. In other words, the stopper 90B allows the operator to widen and narrow the longitudinal width by changing the position of the outer body 90a with respect to the inner body 90b. Such a stopper 90B can be attached to and detached from both the movable body 51B in the first posture and the movable body 51B in the second posture, for example, by changing the total length according to the posture of the movable body 51B. .

  The towing cart 1B configured as described above can selectively tow a plurality of types of carts and pallets similarly to the above-described towing carts 1 and 1A.

  Further, the carriage pusher 22B can set the length of the movable body 51B in the first posture protruding to the inside of the bases 11 and 11A. Thereby, compared with the cart pushing part 22, the cart pushing part 22B can secure a larger gap between the pair of movable bodies 51B and the flat carriage 200 arranged between the pair of movable bodies 51B. In addition, by setting the movable range of the movable body 51B inside the bases 11 and 11A when the posture is changed below the bases 11 and 11A, when the posture of the movable body 51B is changed, the movable body 51B is placed inside the bases 11 and 11A. It is possible to prevent the movable body 51B from interfering with the flat carriage 200 and the basket carriage 300B that are arranged.

(Fourth embodiment)
Next, a tow truck 1C according to a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 24 is an explanatory view showing the structure of the tow cart 1C and disassembled into the members constituting the tow cart 1C, and FIG. 25 is a perspective view showing an example of the configuration when the tow cart 1C is stored. . Note that, in the configuration of the tow cart 1C according to the fourth embodiment, the same reference numerals are given to the same configurations as the tow carts 1, 1A, 1B according to the first to third embodiments described above, and the details thereof The detailed explanation is omitted.

  The towing cart 1C is configured to be assembled by arbitrarily connecting a plurality of members. The tow cart 1C is formed such that each member constituting the tow cart 1, 1A, 1B can be disassembled and assembled.

  As a specific example, as shown in FIG. 24, the tow cart 1C includes a base 11C constituted by a plurality of base members 99 that can be disassembled and assembled. The base 11C has the same configuration as the base 11B except that the base 11C is configured by a plurality of base members 99. The base member 99 has a fastening portion 99a and is connected to another base member 99 by a fastening member such as a bolt. Further, the movable body 51 provided on the base 11C is provided across, for example, two adjacent base members 99 that are connected.

  Since the traction cart 1C configured in this manner is a configuration that can be assembled by arbitrarily connecting, the degree of freedom in setting the shape is improved. Thereby, 1C of tow carts can change a shape according to use conditions, such as changing the full length according to the number of the carts tow. In addition, in the towing cart 1C, the movable body 51 is provided across the adjacent base members 99, so that the coupling strength between the two base members 99 in the fastening portion 99a is improved.

  Further, as shown in FIG. 25, the tow cart 1C is, for example, in a disassembled state, on a plurality of base members 99 to which the wheels 12 are attached and connected to another base member 99, the movable body 51B, and the restriction plate 92. Etc. can be stored in a state where they are placed. Thus, the tow cart 1C can be stored in a compact form in a disassembled state, and can be easily moved in such a form.

  The tow cart 1C may be sold in a state where the base 11C is disassembled into a plurality of base members 99, and the user may be appropriately assembled according to the application.

(Fifth embodiment)
Next, a tow truck 1D according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 26 is a perspective view showing a configuration of the towing cart 1D and towing the flat cart 200. Note that, among the configurations of the tow cart 1D according to the fifth embodiment, the same reference numerals are given to the same configurations as the tow carts 1, 1A, 1B, and 1C according to the first to fourth embodiments described above, Detailed description thereof is omitted.

  The towing cart 1D is configured to be capable of towing a plurality of types of carts, and differs from the towing carts 1, 1A, 1B, and 1C in that the movable body 51, the rotation shaft 52, and the support portion 53 are not provided. The towing cart 1 </ b> D has a configuration in which the frame 21 constitutes the cart pushing portion 22 or the cart pushing portion 22 is fixed to the frame 21.

  In the present embodiment, a configuration in which the traction cart 1D can transport a plurality of flat carts 200 will be described. As shown in FIG. 26, the tow cart 1D includes a base 11D, wheels 12, and a connecting portion 13. The towing cart 1D constitutes a cart pushing portion in which the frame 21D can come into contact with the loading platform 211 of the flat cart 200. The towing cart 1D is towed by the transport vehicle 100 to transport one or a plurality of flat carts 200 arranged inside the frame 21D. The towing cart 1D is an example using a base 11D on which six flat carts 200 can be arranged inside.

  The base 11D includes a frame 21D that can come into contact with the side surface of the loading platform 211 of the flat carriage 200, a stopper 90B that is detachably disposed on the frame 21D, and a locking portion that restricts movement of the stopper 90B disposed on the frame 21D. 91 and a restricting plate 92. Moreover, as for base 11D, a part of flame | frame 21D comprises a trolley | bogie pushing part.

  Like the frame 21A, the frame 21D does not have the movable frame 32, and has a fixed frame 31D formed in a substantially rectangular frame shape with a rear end notched in the traveling direction, a mounting portion 33 to which the wheel 12 is mounted, And a cushioning material 93 provided inside the front end in the direction and capable of coming into contact with the loading platform 211 of the flat carriage 200. The fixed frame 31D included in the frame 21D forms a gate 31a by the cutout.

  Further, the frame 21D in which the wheel 12 is attached to the attachment portion 33 so that the inner side surface of the fixed frame 31D can come into contact with the side surface of the loading platform 211 of the flat carriage 200 has a height from the floor surface to the upper surface of the fixed frame 31D. However, it is configured to be higher than the height from the floor surface to the lower surface of the loading platform 211 of the flat carriage 200. The frame 21D with the wheels 12 attached to the attachment portion 33 is configured such that the height from the floor surface to the upper surface of the fixed frame 31D is slightly lower than the height from the floor surface to the upper surface of the loading platform 211 of the flat carriage 200. The

  In such a tow cart 1D, one or a plurality of flat carts 200 are arranged inside the base 11D, and stoppers 90B are arranged on the locking portions 91 according to the number of the flat carts 200 arranged inside the base 11D. Thus, the frame 21 </ b> D and the stopper 90 </ b> B surround the flat carriage 200 so as to be able to contact the loading platform 211. The towing cart 1 </ b> D is towed by the transport vehicle 100 connected to the connecting portion 13, thereby transporting one or a plurality of flat carts 200.

  In addition, the towing cart 1D is configured such that the height from the floor surface to the upper surface of the fixed frame 31D is slightly lower than the height from the floor surface to the upper surface of the loading platform 211. Thereby, the tow cart 1D can prevent the fixed frame 31D from interfering with the load 500 placed out of the loading platform 211 of the flat cart 200. Such a pulling cart 1D can carry one or a plurality of flat carts 200 on which the load 500 is placed out of the loading platform 211.

  The towing cart 1D configured as described above can suitably tow a plurality of carts.

  In addition, although the pulling trolley | bogie 1D demonstrated the structure which conveys the flat trolley | bogie 200, it is not limited to this, The structure which can convey the basket trolley | bogie 300 may be sufficient. With reference to FIG. 27, a tow cart 1E capable of transporting the cart 300 will be described. FIG. 27 is a perspective view showing the configuration of the tow cart 1E and the towed cart 300. As shown in FIG.

  As shown in FIG. 27, the tow truck 1E includes a base 11E, wheels 12, and a connecting portion 13. The towing cart 1E is configured such that a cart pushing portion 22E fixed to the frame 21E can come into contact with the loading platform 311 of the cage cart 300. The tow cart 1E is towed by the transport vehicle 100 to transport one or a plurality of the carts 300 disposed inside the base 11E. The towing cart 1E is an example using a base 11E on which two basket carts 300 can be arranged on the inside.

  The base 11E is disposed on the frame 21E, a cart pushing portion 22E fixed to the front end side and the both side ends of the frame 21E, a stopper 90B detachably arranged on the cart pushing portion 22E, and the cart pushing portion 22E. And an engaging portion 91E for restricting the movement of the stopper 90B.

  Like the frame 21A, the frame 21E does not have the movable frame 32, and includes a fixed frame 31E formed in a substantially rectangular frame shape with a rear end notched in the traveling direction, and an attachment portion 33 to which the wheel 12 is attached. Have. The fixed frame 31E included in the frame 21E forms a gate 31a by the cutout.

  The cart pushing portion 22 </ b> E has an escape portion that can come into contact with the side surface of the cargo bed 311 of the car cart 300 and does not interfere with the wheels 313 of the car cart 300.

  The locking portion 91 </ b> E is configured by locking members 91 e that are opposed to the side in the traveling direction and are provided at a plurality of locations at intervals equivalent to the width in the traveling direction of the cart 300. The locking member 91e is, for example, a partition provided on the carriage pushing portion 22E so as to be able to contact the stopper 90B and an end portion of the carriage pushing portion 22E.

  When the wheels 212 and 313 provided on the flat carriage 200 and the basket carriage 300 are all free wheels, the tow trucks 1D and 1E are at least one of the plurality of wheels 12, preferably the bases 11D and 11E. It is preferable that the center wheel 12 of the long side is a fixed wheel 12B. By using the fixed wheel 12B, even if the wheels 212 and 313 of the plurality of carriages 200 and 300 arranged inside the bases 11D and 11E are all free wheels, the plurality of carriages 200 and 300 can be stably conveyed. Can do.

  The towing carts 1D and 1E may be configured such that the bases 11D and 11E can mount the pallet 400, respectively. In addition, the traction carts 1D and 1E may be configured such that the gate 31a is provided laterally in the traveling direction. Further, the tow carts 1D and 1E may be assembled by arbitrarily connecting a plurality of base members, similarly to the tow cart 1C.

Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.
Below, the description equivalent to the invention described in the scope of claims of the present application is appended.
[1] A base that is formed in a frame shape in which a plurality of carts can be arranged on the inner side, and that can come into contact with a side surface of a cargo bed of the cart arranged on the inner side;
A connecting portion fixed to the base and connectable to the transport vehicle;
Tow cart with
[2] The base is
A plurality of freewheels that can change the direction of a car that rotates around one axis;
At least one fixed wheel having a fixed vehicle orientation;
A towing cart as set forth in [1].
[3] The traction cart according to [2], wherein the fixed wheel is provided at a center of the base in a traveling direction.
[4] The towing cart according to [1], wherein the base is formed in a frame shape in which a plurality of types of the carts selected from at least two types of carts can be arranged inside.
[5] The base is
A movable body having two postures respectively in contact with the side surfaces of the cargo bed of the two types of carts having different carrier heights;
A support part for supporting the movable body in the two postures, respectively.
The towing cart as set forth in [4].
[6] The base is
A fixed frame having a gate through which the carriage can pass, the inside being formed in a frame shape capable of arranging a plurality of the carriages,
A movable frame that moves so that the gate can be opened and closed;
The tow cart as set forth in [1] or [4].
[7] The towing cart according to [6], wherein the movable frame moves linearly in one direction.
[8] The towing cart according to [6], further including a holding unit that is provided on the movable frame and holds the movable frame on the fixed frame with the gate closed.
[9] The holding means includes a magnet provided on at least one of the fixed frame and the movable frame, and at least the other of the fixed frame and the movable frame is formed of a magnetic material, or the fixed frame The traction cart according to [8], wherein the traction cart is a magnet provided on both of the movable frames and attracting each other.
[10] The towing cart according to any one of [1] to [9], wherein the base is configured to be capable of further placing a plurality of pallets.
[11] The towing cart according to any one of [1] to [10], further including a stopper provided so as to be able to contact the loading platform and restricting movement of the cart disposed inside the base.
[12] The base is:
A fixed frame that is formed in a frame shape capable of arranging a plurality of the carriages on the inner side, and has a gate through which the carriage can pass rearward in the traveling direction;
A stopper that is provided so as to be able to contact the cargo bed, and that restricts movement of the carriage disposed inside the base;
The tow cart according to any one of [1] to [5].
[13] The traction cart according to [12], wherein the base further includes a locking portion that restricts movement of the stopper.
[14] The locking portions are provided in a pair facing the side in the traveling direction, and spaced from the inner side surface of the base in front of the traveling direction at an interval equivalent to the width in the traveling direction of the carriage, The towing cart as set forth in [13], comprising locking members provided at a plurality of locations.
[15] The traction carriage according to any one of [1] to [14], wherein the base is configured by connecting a plurality of base members.

  DESCRIPTION OF SYMBOLS 1 ... Towing cart, 1A ... Towing cart, 1B ... Towing cart, 1C ... Towing cart, 1D ... Towing cart, 1E ... Towing cart, 11 ... Base, 11A ... Base, 11B ... Base, 11C ... Base, 11D ... Base, 11E ... Base, 12 ... Wheel, 12A ... Swivel wheel, 12B ... Fixed wheel, 12a ... Car, 12b ... Mounting bracket, 12c ... Mounting bracket, 13 ... Connector, 21 ... Frame, 21A ... Frame, 21D ... Frame, 21E DESCRIPTION OF SYMBOLS ... Frame, 22 ... Dolly pushing part, 22B ... Dolly pushing part, 22E ... Dolly pushing part, 31 ... Fixed frame, 31D ... Fixed frame, 31E ... Fixed frame, 31a ... Gate, 31b ... Guide part, 32 ... Movable frame, 32a ... guided part, 32b ... holding means, 33 ... mounting part, 41 ... first frame, 42 ... second frame, 51 ... movable body, 51B ... movable body, 52 ... times Axis 53: support part 53B: support part 61 ... first member 61B ... first member 61a ... first insertion hole 61b ... escape part 61c ... projection 62 ... second member 62B ... second 63, third member, 63B, third member, 64, fourth member, 64B, fourth member, 65, fifth member, 65B, fifth member, 66B, sixth member, 71, first support member. , 71B ... first support member, 71a ... first wall portion, 71b ... second wall portion, 71c ... second insertion hole, 71d ... dented portion, 72 ... second support member, 72B ... second support member, 72a ... 1st wall part, 72b ... 2nd wall part, 72c ... 2nd penetration hole, 72d ... hollow part, 81 ... base part, 81a ... reinforcement part, 82 ... fixing | fixed part, 82a ... hole, 90 ... stopper, 90A ... stopper, 90B ... stopper, 90a ... outer body, 90b ... inner body, 91 ... locking part, 91E Locking part, 91a ... Locking member, 91b ... Locking member, 91e ... Locking member, 92 ... Restriction plate, 93 ... Buffer material, 99 ... Base member, 99a ... Fastening part, 100 ... Conveying vehicle, 100a ... Covered Connecting part, 200 ... flat carriage, 211 ... loading platform, 212 ... wheel, 300 ... basket carriage, 300B ... basket carriage, 311 ... loading platform, 311B ... loading platform, 312 ... fence, 312B ... fence, 313 ... wheel, 400 ... pallet, 500 ... Luggage.

Claims (20)

A base that is formed in a frame shape in which a plurality of types of the carts selected from at least two types of carts can be arranged inside, and that can be in contact with a side surface of the cart of the cart arranged inside;
A connecting portion fixed to the base and connectable to the transport vehicle;
Equipped with a,
The base is
A movable body having two postures respectively in contact with the side surfaces of the cargo bed of the two types of carts having different carrier heights;
A support part for supporting the movable body in the two postures, respectively.
Tow truck Ru equipped with. A base that is formed in a frame shape capable of arranging a plurality of carriages on the inside, and a base that can be in contact with a side surface of the carriage of the carriage arranged on the inside;
A connecting portion fixed to the base and connectable to the transport vehicle;
Equipped with a,
The base is
A fixed frame having a gate through which the carriage can pass, the inside being formed in a frame shape capable of arranging a plurality of the carriages,
A movable frame that moves so that the gate can be opened and closed;
Holding means that is provided on the movable frame and holds the movable frame on the fixed frame with the gate closed;
With
The holding means includes a magnet provided on at least one of the fixed frame and the movable frame, and at least the other of the fixed frame and the movable frame is formed of a magnetic material, or the fixed frame and the movable frame provided on both of the frame, the magnet der Ru traction carriage to adsorb each other. A base that is formed in a frame shape capable of arranging a plurality of carriages on the inside, and a base that can be in contact with a side surface of the carriage of the carriage arranged on the inside;
A connecting portion fixed to the base and connectable to the transport vehicle;
Equipped with a,
The base is
A fixed frame that is formed in a frame shape capable of arranging a plurality of the carriages on the inner side, and has a gate through which the carriage can pass rearward in the traveling direction;
A stopper that is provided so as to be able to contact the cargo bed, and that restricts movement of the carriage disposed inside the base;
A locking portion for restricting movement of the stopper;
Tow truck Ru equipped with. The base is
A plurality of freewheels that change the direction of a car that rotates around one axis
At least one fixed wheel having a fixed vehicle orientation;
The tow cart according to any one of claims 1 to 3, further comprising: The traction cart according to claim 4 , wherein the fixed wheel is provided at a center of the base in a traveling direction. 4. The traction cart according to claim 2 , wherein the base is formed in a frame shape in which a plurality of types of the carts selected from at least two types of carts can be arranged inside. 5. The base is
A movable body having two postures respectively in contact with the side surfaces of the cargo bed of the two types of carts having different carrier heights;
A support part for supporting the movable body in the two postures, respectively.
A towing cart according to claim 6 . The base is
A fixed frame having a gate through which the carriage can pass, the inside being formed in a frame shape capable of arranging a plurality of the carriages,
A movable frame that moves so that the gate can be opened and closed;
A towing cart according to claim 1 . The tow cart according to claim 2 or 8 , wherein the movable frame moves linearly in one direction. The towing cart according to claim 8 , further comprising a holding unit that is provided on the movable frame and holds the movable frame on the fixed frame with the gate closed. The traction cart according to any one of claims 1 to 10 , wherein the base is further configured to be capable of mounting a plurality of pallets. The towing cart according to claim 1 or 2 , further comprising a stopper that is provided so as to be able to contact the loading platform and restricts movement of the cart disposed inside the base. The base is
A fixed frame that is formed in a frame shape capable of arranging a plurality of the carriages on the inner side, and has a gate through which the carriage can pass rearward in the traveling direction;
A stopper that is provided so as to be able to contact the cargo bed, and that restricts movement of the carriage disposed inside the base;
A towing cart according to claim 1 . The locking portions are provided in a pair facing the sides in the advancing direction, and spaced from the inner side surface of the base forward in the advancing direction at intervals equivalent to the width in the advancing direction of the carriage. The traction cart according to claim 3 , further comprising a locking member provided.   The tow cart according to any one of claims 1 to 14, wherein the base is configured by connecting a plurality of base members.   The tow cart according to any one of claims 3, 12, and 13, wherein the stopper has a variable overall length. The tow cart according to claim 16, wherein the stopper includes an inner body and two outer bodies that are movably connected to the inner body.   Four locking members are provided at the same position in the traveling direction,
  The traction cart according to claim 14, wherein the four locking members are in contact with the stopper.   The traction cart according to claim 15, wherein the base member has a fastening portion and is detachably connected to the other base member by the fastening member.   The base is configured by connecting a plurality of base members,
  The base member has a fastening portion, and is connected to the other base member so as to be disassembled by the fastening member,
  The tow cart according to claim 1 or 7, wherein the movable body is provided across two adjacent base members connected to each other.