JP2005089020A - Carrier with elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive container carrier with an elevator with good operability and workability at the time of carrying a container under a loading condition and with less risk such as falling over. <P>SOLUTION: In this carrier, wheels 2, 2 are journalled on both release ends of a frame 1 formed like a front opened U-shape seen from a plane view, and caster wheels 3, 3 are provided on both of right and left ends at a rear end of the frame 1, and a strut 4 is uprightly installed at an approximately center part of the frame 1. An elevating element 5 elevatable along the strut 4 is installed in front of the strut 4. Two right and left forks 7, 7 extend from the bottom to the top at a front end of the elevating element 5, and the bottom faces of the forks 7, 7 are groundably constituted. The strut 4 is formed narrower than the width between the forks 7, 7. In a constitution of this carrier with an elevator, an interval between right and left front frames 1a, 1a on the front side is constituted adjustable from a rear position near the front end 6 of the elevating element 5 and from the front end seen from a side view. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a transport device with an elevator, and more specifically, it is possible to lift and transport and stack containers containing fruits and vegetables, and to transport containers in a stacked state collectively. The present invention relates to a transport device.

Japanese Patent Application Laid-Open No. 2004-133867 discloses a container transport device provided with a substantially U-shaped leg frame that opens forward at a lower end of a support column formed in a substantially gate shape, and a container support fork that moves up and down along the support column.
Utility model registration No. 2576709

The left and right leg frame of the container transport device described in Patent Document 1 has a configuration in which the width cannot be changed. Similarly, the width of the left and right forks cannot be changed. This corresponds to only one of the longitudinal direction and the short direction of the container, so that there is a disadvantage that the container can be lifted only from either the longitudinal direction or the lateral direction.
An object of the present invention is to solve the above-mentioned problems, and to provide a container transport device with an elevator that has good operability and workability, is inexpensive, and has a low risk of falling.

Wheels 2 and 2 are pivotally supported at both open ends of the frame 1 formed in a U-shaped front opening in a plan view, and caster wheels 3 and 3 are provided at both left and right ends of the rear end of the frame 1. In the transfer device in which the support column 4 is erected on the front side of the support column 4 and is provided with an elevating body 5 that can be moved up and down along the support column 4, the left and right forks 7 from the lower end of the front end 6 of the elevating body 5 forward. 7, and the bottom surface of the forks 7 and 7 can be grounded, and the front and rear left and right front frames 1 a and 1 a are spaced apart from the front end 6 in the vicinity of the lifting body 5 in a side view and the front end 6. It is set as the structure of the conveying apparatus with an elevator comprised so that adjustment is possible.
In addition, the one-way clutch mechanism 8 that idles when the forks 7 and 7 are lowered and grounded is provided in the up-and-down transmission path, and the restriction means 9 that restricts the action of the forks 7 and 7 being lifted by the free movement of the front and rear is provided. It shall be a conveyor device with an elevator.

In the first aspect of the present invention, since the left and right forks 7 and 7 are extended from the lower side of the front end 6 of the elevating body 5 to the front, and the bottom surfaces of the forks 7 and 7 can be grounded, It is easy to insert the forks 7 and 7 into the edge, and operability and workability are good.
Further, since the distance between the front left and right front frames 1a and 1a can be adjusted from the vicinity of the front end 6 of the lifting body 5 in the side view and from the rear position from the front end 6, the front side of the front end 6 of the lifting body 5 can be adjusted forward. The width can be adjusted only by the side portion, the configuration can be simplified and the strength can be made stronger than the width adjustment of the entire frame 1. By adjusting the width of the left and right front frames 1a and 1a, if the width of the forks 7 and 7 is changed, the container can be lifted from either the longitudinal direction or the short direction of the container. Selection becomes possible.

According to the second aspect of the present invention, since the one-way clutch mechanism 8 that idles when the fork 7 descends and contacts is provided in the up-and-down transmission path, the fork 7 does not move even if the motor is driven in the downward direction of the fork 7. When grounded, the one-way clutch mechanism 8 is idled so that the motor drive is not transmitted to the fork 7, so that the airframe is not lifted inadvertently when the fork 7 is lowered, and the transmission path is not overloaded. A conveying device can be provided.
In addition, since the lifting body 5 and the fork 7 are formed in an L shape when viewed from the side and are lifted up and down in a cantilever state, the tip of the fork 7 is lifted from the ground by the free movement of the fork 7 when it comes down. However, since the restricting means 9 for restricting this is provided, the tip of the fork 7 does not float and can be easily inserted into the container.

Next, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the frame 1 is formed in a U-shape in front view, and the wheels 2 and 2 are pivotally supported at both ends of the open side, and the left and right ends of the rear end of the frame 1 are The four-wheel configuration is provided with caster wheels 3 and 3 with caster angles. A connecting rod 15 for connecting the left and right sides of the U-shaped frame 1 is provided in the front and rear intermediate portion of the frame 1, and the rear portion of the connecting rod 15 has a rigid frame structure in plan view.
A support column 4 made up of square pipes arranged side by side in front and rear is erected in the center of the rear side of the connecting rod 15, and an elevating body 5 that can move up and down along the support column 4 is provided in front of the support column 4. Batteries 13 are disposed on both the left and right sides. Two forks 7, 7 extend forward from below the front end 6 of the lifting body 5, and the forks 7, 7 are formed in an L shape in front view with the lower end portion bent inward. The widths of the left and right forks 7 and 7 are narrower than the left and right widths of the frame 1, and when the forks 7 and 7 are lowered, the lower surfaces of the forks 7 and 7 can be grounded inside the left and right frames 1.

As shown in FIG. 3, a loop-like handle 16 is provided from the upper and lower middle part behind the support column 4 and the operation knob 17 at the center part of the handle 16 is pulled rearward, so that the pin 18 at the front end of the knob 17 is engaged with the handle guide 19. The handle 16 can be removed from the joint hole 20 and the handle 16 can be angled up and down around the handle shaft 23.
Inside the loop-shaped handle 16, a seesaw-type elevating switch 34 for elevating the elevating body 5 is provided. A limit switch 35 is provided behind the lift switch 34. When the lift switch 34 is grasped together with the handle 16, the limit switch 35 is operated to lift and lower the lift body 5.

In the support column 4, the first support column 21 on the front side and the second support column 22 on the rear side are separated from each other, and the upper ends of the support columns 21 and 22 are connected by a connecting plate 24. The elevating body 5 is pivotally supported by a pair of hooked main rolls 25 and 26 in which the first support column 21 is squeezed from the front and rear and spaced apart from each other and the rear main roller 26 is positioned higher than the front main roller 25. is there. The main rolls 25 and 26 are press-fitted to the first support column 21 side when lifting the load in front of the main rolls 25, 26, and the eaves portion reliably guides the left and right sides of the first support column 21. It has a configuration with less shaking.
On the front side of the main roller 26 on the rear side of the first support column 21 that sandwiches the first support column 21, a wrinkle roller 27 is pivotally supported by the elevating body 5. The endless roller 27 is configured such that the distance from the main roller 26 can be adjusted according to the front-rear width of the first support column 21.
An upper limit switch 44 is provided at the upper end of the second support column 22, and when the upper limit switch 44 is actuated when the elevating body 5 rises and the rear end abuts, the elevating body 5 stops rising. Reference numeral 55 denotes a controller that performs elevation control.

The side of the support column 4 is covered with a cover 33, but by the structure of the support column 4 and the lifting body 5 described above, the operator who operates from the rear side of the support column 4, has a single narrow width. Easy to see. As shown in FIG. 5, the height H1 of the bottom edge A of the grounded container 14 is about 10 mm, and the forks 7, 7 are within a dimension H2 (about 5 mm) obtained by subtracting the plate thickness of the forks 7, 7 from this gap. However, since the support 4 of the present invention has a narrow left and right width, the operator can move the rear center portion as shown in FIGS. The left and right forks 7, 7 can be seen from the front without any deviation, and the forks 7, 7 can be easily inserted into the gap at the bottom edge A of the narrow container 14 while adjusting the left and right positions of the machine with respect to the container 14. Work efficiency is also good.
Even if the forks 7 and 7 are slightly displaced with respect to the container 14 to be lifted, the tips of the left and right forks 7 and 7 are bent in the obliquely outward direction in plan view. Guides can be provided. Further, the front frame 1a has its front end bent in an obliquely inward direction in plan view opposite to the front ends of the forks 7 and 7, so that the front frame 1a can be easily inserted into the gap between the side container 14 and the front frame 1a.

As shown in FIGS. 2 and 4, the frame 1 is divided in the vicinity of the front end 6 position of the elevating body 5 and at a rear position from the front end 6 position in a side view, and the front frame 1a and the rear frame 1b are separated. By mounting the spacer 28 between them, it is possible to widen the width of the left and right front frames 1a, 1a at the front portion of the lifting body 5. In response to the expansion of the front frame 1a, the width of the forks 7, 7 can be increased, and the container 14 can be changed to a width that can be lifted from the vertical direction and the horizontal direction.
With this configuration, only the front frame 1a portion that needs to be expanded at the minimum at the front portion of the support column 4 is expanded, so that the entire frame 1 can be expanded with a simpler configuration, and the total length of the expanded front frame 1a can be increased. It is short and strong in strength.
In the present embodiment, the front frame 1a extended from the vicinity of the front end 6 near the front end lift 6 toward the front side is extended rearward, and the angle of the front frame 1a with respect to the frame 1 is adjusted on the rear end upper surface. An adjustment bolt 29 is provided. The adjusting bolt 29 is adjusted by loosening the fixing bolt 30 of the spacer 28 and pushing the adjusting plate 32 welded to the rear part of the spacer base 31 extending rearward along the frame 1 with the adjusting bolt 29. The fixing bolt 30 is tightened again at the position of and fixed.
By adjusting the angle of the front frame 1a, it is possible to safely transport the stacked container 14 without collapsing by correcting the inclination of the support column 4 and the inclination of the bottom surfaces of the forks 7, 7 due to accumulation of processing tolerances and assembly tolerances. In addition, since the bottom surface of the forks 7 and 7 and the ground can be adjusted horizontally, the forks 7 and 7 can be easily inserted into the bottom edge A of the containers 7 and 7.

Next, transmission of the elevator-equipped transport device of the present invention will be described. A motor M capable of forward and reverse rotation is provided in the frame 1 behind the support column 4, and a drive sprocket 36 is attached to the output shaft of the motor M. A first counter sprocket 37 is provided at the lower end of the column 4, and a chain 38 is wound around the driving sprocket 36 of the motor M and the first counter sprocket 37. The chain 38 is stretched by the lower chain tensioner 39 to reliably transmit the drive of the motor M to the first counter sprocket 37, and the chain 38 can be removed by loosening the chain tensioner 39.
A second counter sprocket 40 located concentrically with the first counter sprocket 37 is provided, and a one-way clutch mechanism 8 is interposed in the transmission path between the first counter sprocket 37 and the second counter sprocket 40.
The rear upper surface of the lifting body 5 is connected by a rear connection frame 41, and a lift chain 42 is connected to the top and bottom of the rear connection frame 41. Reference numeral 43 denotes a spring that repels the loose side of the lifting chain 42, and 44 denotes an adjustment screw that adjusts the resilience of the spring 43. The elevating chain 42 is wound around a lower second counter sprocket 40 and a driven sprocket 43 that is pivotally supported by the connecting plate 24 at the upper end of the support column 4. The one-way clutch mechanism 8, the second counter sprocket 40, the lifting chain 42, and the driven sprocket 43 are transmitted in this order, and the lifting body 5 can be lifted and lowered along the column 4. The one-way clutch mechanism 8 is configured to transmit a driving force when the elevating body 5 is raised and to idle when the lower surfaces of the forks 7 and 7 of the elevating body 5 are grounded. Further, even when the elevating body 5 is lifted by an obstacle or the like below while the elevating body 5 is descending, the one-way clutch mechanism 8 idles as in the ground contact state. Accordingly, even when the forks 7 and 7 are grounded while the elevating body 5 is descending or abuts against an obstacle below, the fuselage side is lifted or the transmission path chain, motor M, sprocket, etc. are overloaded. Therefore, it is possible to provide a transport apparatus with an elevator that is safe and has no failure.

As shown in FIG. 6, a regulating means 9 is provided below the elevating body 5 to prevent the forks 7 and 7 from being lifted when the forks 7 and 7 are grounded. Specifically, a restriction pin 46 is provided horizontally on a triangular left and right support plate 45 that hangs down below the elevating body 5, and an engagement plate 47 with which the restriction pin 46 engages is provided on the connecting rod 15 of the frame 1. When the elevating body 5 is lowered together with the restriction pin 46, the restriction pin 46 is engaged with the engagement plate 47. Accordingly, when the lower surface of the fork 7 is grounded, the restriction pin 46 is engaged with the engagement plate 47 to prevent only the tip of the fork 7 from being lifted after the fork 7 is grounded, and the motor M is driven by the one-way clutch mechanism 8. Since the wheel rotates idly, the tip of the fork 7 does not float further after the fork 7 is grounded.
In addition, the height of the adjustment pin 51 contacting the upper end of the adjustment bolt 51 can be adjusted by erecting the adjustment bolt 51 in the engagement plate 47 and adjusting the height of the adjustment bolt 51. The height can be adjusted arbitrarily.

  A container hook 48 that is hooked on the container 14 at a predetermined height position of the container 14 is provided on the front side of the elevating body 5 so that the stacked containers 14 do not fall down during transportation. The mounting base 57 of the container hook 48 is formed in a U-shape that opens downward, and has an open / retractable configuration in which an open end is loosely fitted to a pair of left and right pipes 49. The expansion and contraction is fixed by the knob bolt 50, and the U-shaped mounting base 57 also serves as a safety guard so that the container 14 does not fall toward the operator who is operating the container 14.

  As shown in FIG. 7, the fork 7 in front of the elevator 5 is configured to be swingable left and right. A swing shaft 52 is projected forward from the left and right central portion of the lift 5, and the back plate 7 a of the fork 7 is pivotally supported on the swing shaft 52 via a bearing 53. A long hole 54 is provided on the left and right of the back plate 7a, and a pin 55 protruding forward from the elevating body 5 side is inserted into the long hole 54 to limit the swing amount of the fork 7. With this configuration, when the stacked container 14 is loaded on a vehicle or the like, the bottom surface of the fork 7 swings along the inclination of the loading platform surface even when the loading platform surface is inclined to the left and right, and the container 14 is placed on the loading platform surface. It is easy to remove the fork 7 later.

  The lever extending upward from the rear frame 1 b shown in FIGS. 3 and 7 is a brake lever 56 for the wheels 2 and 2. By tilting the brake lever 56 backward, the braking device (not shown) of the wheels 2 and 2 connected by wires is operated, so that the aircraft does not move inadvertently when the container 14 is lifted or parked. It is.

The top view of this invention. The top view of the state which extended the frame. FIG. The principal part side view which shows angle adjustment of a flame | frame. The side view of a container bottom edge part. The principal part side view of a control means. The front view and partial cutaway side view of a fork swing part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 1a Front frame 2 Wheel 3 Caster wheel 4 Post 5 Lifting body 6 Front end 7 Fork 8 One-way clutch mechanism 9 Control means

Claims (2)

  Wheels (2) and (2) are pivotally supported at both open ends of the frame (1) formed in a front U-shape in plan view, and caster wheels (3) are mounted at both left and right ends of the rear end of the frame (1). , (3), a frame (1) is provided with a support column (4) in a substantially central portion, and a lifting body (5) that can be moved up and down along the support column (4) is provided in front of the support column (4). In the transport device, the lifting body (5) front end (6) is configured so that two left and right forks (7) and (7) extend from the lower side to the front side and the lower surfaces of the forks (7) and (7) can be grounded. In addition, the elevating body (5) in the side view is configured to be adjustable in the vicinity of the front end (6) and the distance between the left and right front frames (1a) and (1a) from the rear position to the front end (6). Conveying device with elevator.   The fork (7), (7) is provided with a one-way clutch mechanism (8) that idles when descending grounding, and the tip is lifted by the free movement of the forks (7), (7). The conveying apparatus with an elevator according to claim 1, further comprising a regulating means (9) for regulating the movement.

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