JP2006176247A - Circulating transfer device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a circulating transfer device for stably transferring articles on pallets by circulating the pallets for transfer while minimizing swing of the pallets in a moving direction with simple structure, and enhancing storage efficiency by reducing space between the pallets as much as possible. <P>SOLUTION: The circulating transfer device is provided with a pair of right and left drive chains 3 circulatably wound around sprockets 1, 2 provided back and forth; a plurality of hanging arms 4 with base end parts interconnected while leaving prescribed space between the drive chains 3; and the pallets 6 that are connected to tip end parts of the hanging arms 4 through a horizontal state holding mechanism 5 and on which the articles C can be placed. The horizontal state holding mechanism 5 is composed of first gears provided at the tip ends of the hanging arms 4, and second gears engaged with the first gears and provided on the pallets 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a circulation type transfer device that circulates and transfers a placed object placed on a pallet.

  Conventionally, as a circulation type transfer device, a pair of left and right guide rails having a substantially rectangular shape is disposed across the front and rear of a cargo box of a vehicle, and a plurality of containers are circulated and transferred along these guide rails.

Specifically, the front and rear horizontal rail portions and the upper and lower vertical rail portions constitute a guide rail, and the container is moved back and forth along the horizontal rail portion by driving the horizontal movement chain. The container is circulated and transferred by moving the container up and down along the vertical rail portion by driving (see, for example, Patent Document 1).
JP 58-63609 A

  However, in the above-mentioned conventional one, the guide rail is arranged over the entire circumference of the transfer path for circulating and transferring the container, and the horizontal movement chain and the vertical movement chain, and the drive for driving these chains are provided. Driving means such as a motor must also be provided, which makes the apparatus configuration very complicated. Further, since the horizontal transfer and the vertical transfer of the container are alternately performed, there is a problem that a control system for controlling the driving of the horizontal movement chain and the vertical movement chain becomes complicated.

  Further, the container is suspended by a bracket provided on the upper portion of the container being connected to a support roller that rolls on the guide rail portion via a support shaft. For this reason, there is a possibility that the container may be greatly shaken back and forth by inertial force when the drive is stopped and also when the vehicle is traveling. Therefore, in order to avoid interference between adjacent containers due to the shaking, it is necessary to ensure a wide space between the containers in anticipation of the shaking. As a result, the entire apparatus becomes large and the accommodation efficiency of the contents to the apparatus also increases. There was a problem of getting worse.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to mount the pallet on the pallet by circulating and transporting the pallet with a simple configuration while minimizing the swing of the pallet in the moving direction. An object of the present invention is to provide a circulating transfer device capable of stably transferring an figurine and improving the accommodation efficiency by shortening the interval between pallets as much as possible.

  In order to achieve the above object, a circulating transfer device according to a first aspect of the present invention includes a pair of left and right drive chains that are circulated around sprockets provided at the front and rear, and a predetermined interval between the drive chains. A plurality of suspension arms having base ends connected to each other, and a pallet that is connected to the distal end portions of these suspension arms via a horizontal holding mechanism and on which an object can be placed.

  According to a second aspect of the present invention, the horizontal transfer mechanism includes a first gear provided at the tip of the suspension arm, and a second gear meshed with the first gear and provided on the pallet. Further, both ends of the suspension link are rotatably connected between the tip of the suspension arm and the pallet.

  In the circulating transfer device of the invention according to claim 3, the above-mentioned figurine is a cart for containing the contained item, and the cart is placed in a secured state on the pallet by the securing means. Is.

  According to a fourth aspect of the present invention, there is provided a circulating transfer device according to the first, second or third aspect, wherein the circulating transfer device according to the first, second or third aspect is provided in a carton box.

  According to the present invention, since the suspension arm and the pallet are connected with a simple structure and by a horizontal holding mechanism, it is possible to suppress as much as possible the swinging of each pallet from front to back due to inertial force at the time of stoppage. As a result, the interval between the pallets can be made as short as possible so that more pallets can be arranged, thereby increasing the accommodation efficiency.

  In addition, by tying the cart placed on the pallet by the lashing device, each pallet can be circulated and transported in a stable state coupled with the suppression of the shaking of each pallet described above, and the cart is inadvertently dropped. Safety can be improved by reliably preventing accidents such as

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows the overall configuration of a circulating transfer apparatus according to the present invention.

  The circulating transfer device X is provided in a cargo vehicle A as shown in FIG. Specifically, it is installed in a cargo box A2 provided on the vehicle body frame A1 of the cargo vehicle A.

  Hereinafter, a specific configuration of the circulation type transfer device X will be described.

  As shown in FIG. 2, the circulating transfer device X includes a pair of left and right drive chains 3 that are circulated around sprockets 1 and 2 provided on the front, rear, left and right sides, and a predetermined interval between the drive chains 3. A plurality of suspension arms 4 to which base ends are coupled, and a pallet 6 that is coupled to a distal end portion of the suspension arm 4 via a horizontal holding mechanism 5 and on which a placement object can be placed.

  The front and rear sprockets 1 and 2 are provided at both ends of a support shaft 11 (see FIG. 3) in which the left and right front sprockets 1 and 1 are horizontally arranged in the width direction at the front part of the cargo box A2 and are rotatably supported. The left and right rear sprockets 2 and 2 are integrally provided at both ends of a support shaft 21 that is horizontally disposed in the width direction at the rear portion of the cargo box A2 and rotatably supported.

  The drive chain 3 is wound around the corresponding front and rear sprockets 1 and 2, respectively, and a pair of these is provided side by side in the packing box A2 with an interval substantially corresponding to the lateral width of the packing box A2. .

  For example, the support shaft 11 is configured to be rotatable by a drive motor 12 via a transmission mechanism 13, so that the front sprocket 1 is on the drive side and the rear sprocket 2 is on the driven side, and the drive chain 3 is In FIG. 2, circulation driving is performed in the direction of the arrow P.

  These drive chains 3 are supported by guide rails 31 (see FIG. 5) provided on the left and right side walls of the cargo box A2 in the upper and lower linear portions, and these linear portions circulate stably without being bent downward. It is made like that.

  The plurality of suspension arms 4 have respective base end portions connected to the left and right drive chains 3 at a predetermined interval, and as described above, both ends of the pallet 6 are horizontally held by the horizontal holding mechanism 5. It is connected through.

  In the present example, the pallet 6 is configured so that three carts C (placed objects) can be placed on one pallet 6 as shown in FIG.

  Specifically, as shown in FIG. 4, a horizontal frame 61 having a length corresponding to the distance between the left and right drive chains 3, and diagonally downward from both ends and midway of the horizontal frame 61 to the rear. Four extended inclined frames 62 and a mounting table 63 provided at the front end (rear end) of each inclined frame 62 are provided.

  The inclined frames 62 are arranged so that the middle two divide the horizontal frame 61 into three equal parts.

  Each mounting table 63 has a top surface formed on a support surface 63a that supports wheels C1 and C2 (see FIG. 6) provided on the front, rear, left, and right of the bottom of the cart C. The front and rear wheels C1 and C2 of the cart C are supported. In other words, the mounting tables 63 at both left and right ends are formed to have a width that can support the front and rear wheels C1 and C2 on one side of the cart C, and the two front and rear wheels of the cart C adjacent to each other with the inclined frame 62 interposed therebetween. It is formed wider than the mounting tables 63 at the left and right ends so as to support C1 and C2.

  In addition, a reinforcing frame 64 is installed over the bottom of the mounting table 63, and as a whole, the strength enough to stably mount the three carts C is secured.

  The horizontal holding mechanism 5 always keeps the mounting base 63 of the pallet 6 horizontally regardless of the change in the angle of the suspension arm 4 as the suspension arm 4 pivots on the front and rear sprockets 1 and 2 by the circulation drive of the drive chain 3. As shown in FIGS. 5 and 6, the first gear 51 is provided at the tip of the suspension arm 4 and the second gear 52 is provided on the pallet 6. Specifically, the second gear 52 is pivotally supported by brackets 65 fixedly provided in the middle of the inclined frames 62 at both ends of the pallet 6.

  Specifically, the first gear 51 is integrally supported by a shaft member 51 a that is fixedly supported at the tip of the suspension arm 4, and the second gear 52 is fixedly supported by the bracket 65. The shaft member 52a is integrally supported.

  By configuring the horizontal holding mechanism 5 in this way, even if the angle of the suspension arm 4 changes due to the turning of the sprockets 1 and 2, the second gear 52 rotates through the first gear 51 in response to the change in angle. By doing so, the mounting table 63 of the pallet 6 is rotated in a horizontal direction via the second gear 52, so that the mounting table 63 can always be held horizontally.

  Further, the suspension arm 4 and the bracket 65 connected by the first and second gears 51 and 52 are also connected by a suspension link 7 as shown in FIGS. 4 and 5.

  A pair of left and right suspension links 7 are provided so as to sandwich the first and second gears 51 and 52, and both ends thereof are pivotally supported by the shaft members 51a and 52a. By connecting the suspension arm 4 and the bracket 65 with the suspension link 7 in this way, the pallet 6 can be stably supported while securing the strength required for suspension of the pallet 6 with respect to the suspension arm 4. .

  As shown in FIG. 6, the cart C is a box-like body in which an appropriate storage can be stored. For example, the storage can be inserted from an upper surface opening that can be opened and closed by an opening / closing lid C5. At the bottom of the cart C, small-diameter wheels C1 are provided on the front left and right, and large-diameter wheels C2 are provided on the rear left and right. The cart C can be smoothly transferred by the wheels C1 and C2. ing.

  In the middle of the front surface of the cart C, there are provided engaging pins C3 for engaging with a securing device 8 described later to secure the cart C on the pallet 6, and opposite to the engaging pins C3. A grip portion C4 that is gripped by a hand when the worker moves the cart C is provided on the upper rear surface of the cart C on the side.

  Further, the pallet 6 is provided with a lashing device 8 as lashing means for stably holding the placed cart C in this state.

  As shown in FIGS. 7 and 8, the securing device 8 includes a lock body 82 pivotally supported by a bracket 81 fixed to the horizontal frame 61 of the pallet 6, and a stopper 83 pivotally supported by the lock body 82. It has.

  The lock body 82 is formed in a concave shape. As shown in FIG. 8, the base end portion 82a is pivotally supported by the bracket 81 with a pin 84 in a state where two pieces are arranged at a predetermined interval. The portion 82b is an engaging portion that engages with the engaging pin C3 of the cart C.

  The stopper 83 is pivotally supported by a pin 85 pivotally supported between the tip portions 82 c of the two lock main bodies 82 while being disposed between the two lock main bodies 82.

  Further, a spring 86 is connected to the base end of the lock main body 82 and the bracket 81, and a fixed position where the lock main body 82 is indicated by a solid line from the center of the pin 84 and a two-dot chain line by the spring 86. Is held at the release position indicated by.

  The stopper 83 is prevented from rotating in the counterclockwise direction in FIG. 7 by the lower end portion 83a coming into contact with the front surface of the base end of the bracket 81 in a state where the lock main body 82 is disposed at the locked position. Thus, the engaging pin C3 engaged with the lock main body 82 is held in that state by the upper end portion 83b formed in a bowl shape, and the lower end portion 83a thereof is in a state where the lock main body 82 is disposed at the release position. Is in contact with the pin 84 to maintain the state indicated by the two-dot chain line in FIG.

  When the cart C is placed on the placing table 63 of the pallet 6, the lashing device 8 configured as described above has the front wheel C 1 of the cart C of the placing table 63 as shown by a two-dot chain line in FIG. The cart C is secured by engaging the engaging pin C3 using the action of dropping forward from the front end. That is, as the front wheel C1 drops from the mounting table 63 and moves downward, the engagement pin C3 also moves downward while drawing an arc, so that the lock body 82 at the release position is secured by this movement. The cart C is secured in position. Further, by forcibly pulling out the cart C backward from the locked position, the lock main body 82 is arranged at the release position by the reverse operation to the above, and the engaging pin C3 is pulled out from the lock main body 82 and is released.

  Note that three lashing devices 8 are provided on the pallet 6 corresponding to the three carts C mounted on the pallet 6 (see FIGS. 3 and 4).

  Further, as shown in FIG. 9, a stopper roller 9 is provided at the bottom rear portion of the packing box A2. The stopper roller 9 is used to hold the pallet 6 at this position when the pallet 6 is disposed at the cart unloading position below the rear portion of the cargo box A2. The stopper roller 9 reinforces the bottom of the pallet 6 at the cart unloading position. While abutting and holding the frame 64, the reinforcing frame 64 is installed at such a height as to move forward while lightly climbing from the cart loading / unloading position.

  Thus, by providing the stopper roller 9 and holding the pallet 6 in the cart loading / unloading position, the pallet 6 can be prevented from inadvertently escaping forward when the cart C is loaded on the mounting table 63 of the pallet 6. The cart C can be smoothly loaded onto the pallet 6.

  Further, a load receiving table elevating device 10 is provided behind the cargo box A2 as shown in FIG. The load receiving platform lifting / lowering device 10 is a conventionally well-known device used for loading / unloading loads (in this example, cart C) between the ground and the packing box 10. Specifically, for example, two upper and lower links 101 and 102 and a cargo receiving platform 103 are provided, and the links 101 and 102 are rotated up and down to horizontally arrange the cargo receiving platform 103 on the ground and the packing box A2 (cart loading / unloading). The pallet 6 arranged at the position is configured to move up and down between the pallet 6 and the mounting table 63. Note that the load receiving platform 103 is stored by standing along the rear surface of the packing box A2 during traveling or the like.

  In addition, a guide stand A3 is provided at the rear end of the bottom surface of the load box A2 for smoothly transferring the cart C between the pallet 6 at the cart unloading position and the load receiving table 103.

  Next, operation | movement of the circulation type transfer apparatus X comprised in this way is demonstrated.

  The loading and unloading of the cart C by the circulating transfer device X and the transfer of the cart C and the empty cart C in which the stored items are stored are performed by arranging each pallet 6 at the cart unloading position.

  Specifically, the operator operates an operating device (not shown) to drive the drive motor 12 to drive the drive chain 3 in the direction of the arrow P, so that the pallet 6 is placed in the cart loading / unloading position by one unit. Then, it is carried out while using the load receiving table elevating device 10. For example, the pallet 6 on which the empty cart C is placed is placed at the cart loading / unloading position. First, the empty cart C is transferred from the placement base 63 of the pallet 6 to the load receiving base 103 arranged horizontally through the guide stand A3. The cart C is lowered to the ground by lowering the load receiving platform 103 to the ground, and then the cart C storing the stored items is placed on the mounting table 6 of the pallet 6 from the ground using the load receiving platform 103 contrary to the above. By loading, the cart C in which the contents are stored and the empty cart C are transshipped.

  In this case, the control for stopping the pallet 6 at the cart loading / unloading position is performed by directly detecting that each pallet 6 has reached the cart loading / unloading position, or by moving the drive chain 3 or rotating the sprocket 1 or 2. The angle may be detected by a sensor or the like and performed based on the detection result.

  Further, in the cart loading / unloading position, the pallet 6 that has reached this position is held in this position unless it comes into contact with the stopper roller 9 and gets over the stopper roller 9, so that the pallet 6 is stopped at the cart loading position described above. Even if the control is slightly deviated, the pallet 6 can be arranged at the cart loading position, whereby the alignment accuracy for stopping the pallet 6 at the cart loading position can be reduced.

  Furthermore, it is possible to ensure high safety by providing a sensor for detecting the presence of a person within the moving range of each pallet 6 that circulates and stopping the movement of each pallet 6 when the sensor detects this. it can.

  Further, the pallet 6 may be moved continuously instead of only one, and the pallet 6 designated by the operation device may be arranged at the cart loading position.

  In this way, by configuring the circulation type transfer device X and transshipping the cart C onto the respective pallets 6, the suspension arm 4 and the suspension arm 4 can be easily connected to the suspension arm 4 by the horizontal holding mechanism 5 and the suspension link 7. Since the pallet 6 is connected to the pallet 6, it is possible to suppress the swaying of the pallets 6 due to inertia force at the time of stopping as much as possible. Since 6 can be arrange | positioned, accommodation efficiency can be improved. Further, by tying the cart C placed on the pallet 6 by the lashing device 8, each pallet 6 can be circulated and transported in a stable state coupled with the suppression of the shaking of each pallet 6 described above. Accidents such as inadvertent dropping of C can be reliably prevented.

  Note that the above-described embodiment is merely a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope thereof.

  For example, although the pallet 6 on which the cart C is placed has been described, not only the cart C but also a suitable placed object can be placed and circulated on the pallet 6. In this case, what is necessary is just to comprise the pallet 6 so that this mounting thing can be mounted stably according to the shape etc. of the mounting object to mount.

It is a side view which shows the structure of the circulation type transfer apparatus of this invention provided in the cargo box of a vehicle. It is a side view which shows the specific structure of a circulation type transfer apparatus. It is the figure seen from the packing box front which shows the specific structure of a circulation type transfer apparatus. It is a perspective view which shows the structure of a pallet. It is sectional drawing which shows the structure of a horizontal holding mechanism. It is a side view which shows the pallet which mounted the cart. It is a side view which shows the structure of a lashing device. It is a front view which shows the structure of a lashing device. It is a side view which shows the rear part periphery of a packing box.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front sprocket 2 Rear sprocket 3 Drive chain 4 Suspension arm 5 Horizontal holding mechanism 51 1st gear 52 2nd gear 6 Pallet 7 Suspension link 8 Locking device (locking means)
A2 Packing box C cart (placed item)
X Circulating transfer device

Claims (4)

A pair of left and right drive chains wound around the sprockets provided at the front and rear, and
A plurality of suspension arms having base ends connected to each other at a predetermined interval between the drive chains;
A circulating transfer device comprising a pallet that is connected to a front end portion of these suspension arms via a horizontal holding mechanism and on which a placement object can be placed.   The horizontal holding mechanism includes a first gear provided at the tip of the suspension arm and a second gear meshed with the first gear and provided on the pallet, and further, the tip of the suspension arm and the pallet. The circulating transfer device according to claim 1, wherein both ends of the suspension link are rotatably connected to each other.   The circulation according to claim 1 or 2, wherein the figurine is a cart for accommodating the contents, and the cart is placed in a secured state on the pallet by a securing means. Type transfer device. 4. A circulating transfer device according to claim 1, wherein the circulating transfer device is provided in a carton of a vehicle.

Images