JP3826701B2 - Picking cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a picking cart used when picking up an article stored on, for example, a shelf.
[0002]
[Prior art]
Conventionally, as this kind of picking cart, there is a hand-pick type picking cart as shown in FIG. That is, a plurality of wheels 83 are provided in the lower part of the main body 82 of the carriage 81, and a support base 84 is provided above the main body 82. On the support base 84, a monitor 85 for displaying the contents of picking work, a bar code reader 86, a collection container 88 for storing articles 87 picked from a shelf 89, and the like are placed.
[0003]
According to this, the worker looks at the shelf number displayed on the monitor 85, the product name, product code, picking quantity, etc. of the article 87, moves the carriage 81 to the front of the target shelf 89, and the corresponding article 87. Is picked from the shelf 89 as many times as necessary and put into the collection container 88.
[0004]
[Problems to be solved by the invention]
However, in the above-described conventional format, when picking the article 87 that is tall in the shelf 89 and stored in the high position of the shelf 89, the operator prepares a stepladder or the like separately from the carriage 81 and climbs the stepladder. The article 87 stored at the height of the shelf 89 was picked. Therefore, there is a problem that a special instrument such as a stepladder needs to be always provided for such a time, and it takes time and effort to get the stepladder and the like.
[0005]
An object of the present invention is to provide a picking cart that can make a special instrument such as a stepladder unnecessary even when picking up an article stored in a high place.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the picking cart in the first invention is provided with a plurality of wheels at the lower part of the main body,
The wheels consist of a pair of front wheels provided on the front of the main body and a pair of rear wheels provided on the rear of the main body,
The main body is provided with a support portion for supporting an article, a stepping body, and a handrail extending above the main body,
The tread has a step for raising and lowering and three support legs,
The three support legs consist of a pair of left and right outer support legs and an intermediate support leg provided between the pair of outer support legs,
The lower end of each support leg is configured to be grounded ,
The lower ends of the pair of outer support legs are located behind the pair of rear wheels,
The lower end of the intermediate support leg is located between the front wheel and the rear wheel and between the left and right of these wheels .
[0007]
According to this, when the article to be picked is stored at a high place, the lower end of the three support legs is grounded by the operator climbing the step provided on the carriage, and a special instrument such as a stepladder It is possible to pick an article from a high place without using. At this time, the worker can work safely at a high place by grasping the handrail.
[0008]
The picking cart in the second invention is provided with display means for displaying the contents of the picking work on the main body,
The display means is located above and ahead of the uppermost step.
According to this, when the worker climbs up to the uppermost step and works, it is possible to prevent the operator's feet from coming into contact with the display means, thereby preventing the display means from being damaged.
[0009]
The picking cart according to the third aspect of the present invention is such that a battery for supplying power to the display means is provided near the lower center of gravity of the main body.
According to this, the stability of the cart is improved.
[0011]
In the picking cart in the fourth invention, the tread is provided at the rear of the main body,
A fixing device is provided to fix the rear wheels,
An operation unit for operating the fixing device is provided on the side of the rear wheel,
The operation unit is configured to be operable from the rear of the main body with the stepping body.
[0012]
According to this, when an operator operates an operation part from the back of a bogie main part, a fixing device will act | operate and a rear wheel will be fixed. Thus, when the worker is on the step, the carriage can be prevented from moving carelessly, and the picking operation can be performed safely. Further, after the completion of picking, the operator can operate the operation unit from the rear of the main body of the carriage to release the fixing of the rear wheels, thereby allowing the carriage to move.
[0013]
In addition, both climbing up and down to the step and the operation of the operation unit can be performed from the rear side of the carriage body, so that the operator does not have to walk around and can perform the work quickly. Furthermore, since the lower end of the outer support leg is located behind the rear wheel, the operation part is provided on the side of the rear wheel, so when operating the operation part, the outer support leg Will not interfere with the operation.
[0014]
In the picking cart in the fifth invention, the battery is provided at the lower part of the main body,
Each support leg is located on the rear side of the battery.
According to this, each support leg does not interfere with the battery, and a load acting on each support leg is not applied to the battery.
[0015]
The picking cart in the sixth aspect of the present invention is provided with a push / pull portion for pushing and pulling the cart at a part of the handrail.
According to this, the operator can move the carriage easily by pushing and pulling the carriage with the push-pull portion.
[0016]
The picking cart in the seventh aspect of the present invention is provided with a plurality of cushioning members on the main body for reducing the impact when contacting with other structures.
The buffer member protrudes to the left and right sides and forward from the main body.
[0017]
According to this, when the buffer member comes into contact with another structure such as a shelf, the impact received by the carriage at the time of contact can be reduced, and damage to the carriage and other structures can be prevented.
[0018]
The picking cart in the eighth invention is provided with cushioning members on both sides of the front portion of the main body, so as to reduce the impact when coming into contact with another structure.
The front wheel provided in the front part of the main body is configured to be pivotable about the longitudinal axis.
[0019]
According to this, when a buffer member contacts other structures, such as a shelf, by the reaction, a wheel of a front part turns to the opposite side to other structures centering on a vertical axis. Thereby, the impact at the time of contacting with another structure can be released.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 to 3, reference numeral 1 denotes a hand-picked picking cart used for picking an article 3 stored on a shelf 2. The main body 4 of the picking cart 1 is composed of a pair of left and right frame frames 5 and a plurality of connection frames 6 connected between the two frame frames 5. The frame 5 includes a lower cross member 7, a front vertical member 8 erected on the front of the lower cross member 7, an upper cross member 9 extending rearward from the upper portion of the front vertical member 8, and an upper horizontal member. The rear slope material 10 extends obliquely downward from the rear portion of the material 9.
[0024]
A pair of left and right casters 12 and 13 are provided at the bottom of the main body 4. The main body 4 is provided with a support portion 14 and a stepping body 15 that support the article 3. The step 15 includes a pair of left and right outer support legs 16, a plurality of upper and lower flat plate-like steps 17 (an example of a step) provided between the both support legs 16, and the support legs 16. It is comprised in the shape of a ladder with the intermediate support leg 18 provided in the. The intermediate support leg 18 is bent into a “<” shape when viewed from the side, and is attached to the lower surface of the lowermost step 17.
[0025]
A pair of upper and lower connecting frames 19 are connected between the left and right rear inclined members 10, and a pair of left and right cylindrical holding members 20 are provided on both the connecting frames 19. The upper and lower portions of the pair of outer support legs 16 of the step body 15 are inserted through the holding member 20, whereby the step body 15 is provided at the rear portion of the main body 4 so as to be movable up and down. In addition, a disk-shaped eaves member 22 is provided below the pair of outer support legs 16, and a coil spring 23 (an example of a biasing tool) is provided between the eaves member 22 and the lower holding member 20. Is provided. The pair of outer support legs 16 are inserted into both coil springs 23, and the tread 15 is urged upward by the urging force (extension force) of both coil springs 23. The lower ends of the pair of outer support legs 16 are located behind the wheels 25 of the rear casters 13, and the lower ends of the intermediate support legs 18 are connected to the wheels 26 of the front casters 12 and the rear parts. It is located between the wheels 25 of the casters 13.
[0026]
A pair of left and right handrails 28 extending upward are provided on the upper portion of the main body 4. These handrails 28 are suspended from an inclined hook part 29 extending obliquely upward from the upper part of the rear inclined member 10, a horizontal hook part 30 extending forward from the upper part of the inclined hook part 29, and a front part of the horizontal hook part 30. And the vertical flange 31 connected to the front portion of the upper cross member 9.
[0027]
A horizontal frame 33 is connected between the left and right vertical flange portions 31, and a monitor 35 (an example of display means) for displaying the contents of picking work is provided on the horizontal frame 33 via an attachment member 34. Yes. The mounting member 34 includes a fixed portion 36 provided on the horizontal frame 33 and a movable portion 37 provided on the back side of the monitor 35. The movable portion 37 is interposed via bolts and nuts 38. Thus, it is connected to the fixed portion 36 so as to be swingable about the lateral axis 39. Thereby, as shown with the virtual line of FIG. 1, the angle of the monitor 35 can be changed up and down. The monitor 35 is located above and in front of the uppermost step 17. Further, as shown in FIG. 5, the mounting height of the monitor 35 is set so as to be positioned substantially in front of the face of the worker 61 standing upright on the floor 60.
[0028]
In addition, the inclined flange portion 29 has a holder 43 for holding a barcode reader 42 for reading a barcode attached to the article 3 or the shelf 2, and a handle 44 (pushing unit for pushing and pulling the carriage 1). An example of a pulling portion).
[0029]
Further, a storage box 40 (an example of a storage body) is provided at the front part between the left and right lower cross members 7 of the main body 4, and power is supplied to the monitor 35 and the barcode reader 42 in the storage box 40. A battery 41 and a control unit 58 that controls the monitor 35 and the barcode reader 42 are accommodated. The battery 41 is brought to the rear of the storage box 40 and is located in the lower central portion of the main body 4 where the center of gravity of the carriage 1 is located. The outer support legs 16 and the intermediate support legs 18 are located behind the storage box 40 and are arranged so as not to contact each other with a space from the storage box 40.
[0030]
Further, the wheels 26 of the left and right front casters 12 are free wheels configured to be rotatable about a longitudinal axis 46. On the other hand, the wheels 25 of the left and right rear casters 13 are fixed wheels fixed in the front-rear direction, and both the rear casters 13 are provided with a fixing device 47 for fixing the wheels 25. As shown in FIG. 4, the fixing device 47 includes a leaf spring 48 that is bent and can be pressed and separated from the outer peripheral surface of the wheel 25, and an operating piece 49 provided between the bent leaf springs 48. . The leaf spring 48 is attached to a horizontal shaft 50 provided in the bracket 51 of the rear caster 13. Further, the operating piece 49 is formed in a rectangular shape having a short side and a long side, and is configured to be rotatable up and down within a range of approximately 90 °.
[0031]
An operation lever 52 (an example of an operation unit) that rotates the operating piece 49 is provided on the outer side of the rear caster 13. One end of the operating lever 52 is attached to the operating piece 49, and the other end of the operating lever 52 is formed with an operating piece 53 that is bent outward in the left-right direction. As shown by the solid line in FIG. 4, when the operation lever 52 is rotated to the horizontal position, the operation piece 49 is rotated together with the operation lever 52, and the short side of the operation piece 49 is in the vertical direction. As a result, the vertical distance between the bent leaf springs 48 is closed, the tip of the leaf spring 48 is separated from the outer peripheral surface of the wheel 25, and the fixation is released. Further, as shown by the phantom line in FIG. 4, when the operation lever 52 is rotated to the vertical position, the operation piece 49 is rotated together with the operation lever 52, and the long side of the operation piece 49 is in the vertical direction. Thereby, the vertical space | interval of the bent leaf | plate spring 48 opens, the front-end | tip of the leaf | plate spring 48 press-contacts to the outer peripheral surface of the wheel 25, and the wheel 25 is fixed.
[0032]
As shown in FIGS. 1 and 2, a roller 55 (an example of a buffer member) is provided at the front and lower part of the main body 4 to reduce the impact when contacting the lower part of the shelf 2 (an example of another structure). A pair of left and right is provided. That is, a bracket 56 projecting downward and outward is provided at the front part of the left and right lower cross members 7, and the roller 55 is provided at the tip of the bracket 56, with the longitudinal axis 57 as the center. It is configured to be freely rotatable. The left and right rollers 55 protrude outward and forward of the picking cart 1.
[0033]
Hereinafter, the operation of the above configuration will be described.
When performing the picking work, the work contents such as the shelf number of the target shelf 2, the product name of the article 3 to be picked, the product code, and the number of picking are displayed on the screen of the monitor 35. As shown in FIG. 5, the worker 61 looks at the monitor 35 and pushes the picking cart 1 to the front of the target shelf 2 to move it. At this time, the operator 61 can easily move the picking cart 1 by holding (pulling) the left and right handles 44. Moreover, since the mounting height of the monitor 35 is located almost in front of the face of the worker 61 standing upright on the floor 60, the worker 61 can easily visually observe the monitor 35.
[0034]
Then, the worker 61 picks the target article 3 from the shelf 2 and puts the article 3 into the collection container 59 (container or the like) placed on the support portion 14. At this time, the worker 61 removes the barcode reader 42 from the holder 43 and reads the barcode of the article 3 using the barcode reader 42.
[0035]
When picking the article 3 stored at a high place on the shelf 2, the worker 61 steps down the operation piece 53 of the operation lever 52 in the horizontal position from the rear of the carriage 1 with his / her foot, and the virtual part of FIG. As indicated by the line, the operation lever 52 is rotated to the vertical position. Thereby, the long side of the operation piece 49 becomes a vertical direction, the front-end | tip of the leaf | plate spring 48 press-contacts to the wheel 25 of the rear caster 13, and the wheel 25 is fixed.
[0036]
After fixing the wheel 25 of the rear caster 13 as described above, the worker 61 climbs Step 17 with the handrail 28 as shown in FIG. At this time, since the weight of the worker 61 acts on the step 17, the coil spring 23 is compressed and the foot 15 is lowered, and the lower ends of the three support legs 16 and 18 of the foot 15 are grounded to the floor 60. To do. As described above, the stepping body 15 is supported by the floor 60 at three points, and thus the stability is increased. Further, the lower ends of the outer left and right support legs 16 are grounded to the floor 60 at the rear position of the rear caster 13 and the lower ends of the intermediate support legs 18 are grounded to the floor 60 at the front position of the rear caster 13. The stability of 15 is further improved in the front-rear direction.
[0037]
As described above, the worker 61 can easily pick the article 3 stored in the high place of the shelf 2 by climbing to the step 17 of the carriage 1 without using a special instrument such as a stepladder. In addition, by fixing the wheel 25 of the rear caster 13 as described above, it is possible to prevent the cart 1 from being inadvertently moved when the worker 61 goes up to step 17. Can be safely picked.
[0038]
Further, since the monitor 35 is located above and in front of the uppermost step 17, when the worker 61 climbs up to the uppermost step 17 and works, the foot of the worker 61 comes into contact with the monitor 35. This can prevent the monitor 35 from being damaged.
[0039]
After the picking is finished, as shown in FIG. 5, when the worker 61 descends from the step 17 to the floor 60 behind the carriage 1, the weight of the worker 61 does not act on the step 17, so that the coil spring 23 extends. As a result, the tread 15 is raised, and the lower ends of the three support legs 16, 18 of the tread 15 are lifted upward from the floor 60.
[0040]
Thereafter, when the operator 61 pulls up the operation piece 53 of the operation lever 52 in the vertical position from the rear of the carriage 1 to the front with his feet, the operation lever 52 is repelled by the repulsive force of the leaf spring 48 as shown by the solid line in FIG. Rotates back to the horizontal position. As a result, the short side of the operating piece 49 is in the vertical direction, and the tip of the leaf spring 48 is separated from the wheel 25 of the rear caster 13, so that the fixing of the wheel 25 is released and the wheel 1 can be rotated to move the carriage 1. Can do.
[0041]
As described above, since the climbing to / from the step 17 and the operation of the operation lever 52 can be performed from the rear side of the carriage 1, the worker 61 does not have to walk around and can work quickly. Further, as shown in FIG. 3, the lower ends of the outer left and right support legs 16 are located behind the rear caster 13, whereas the operation lever 52 is provided on the outer part of the rear caster 13. When the operation lever 52 is operated, the outer support legs 16 do not interfere with the operation.
[0042]
Further, when the worker 61 is moving the carriage 1, the wheel 26 of the front caster 12 turns around the vertical axis 46 so that the carriage 1 can be easily changed to the left and right. Further, when the carriage 1 is moved along the shelf 2, as shown in FIG. 2, when the roller 55 comes into contact with the lower front surface of the shelf 2, the roller 55 rotates, and the impact received by the carriage 1 at the time of contact. Can be relieved. Thereby, damage to the cart 1 and the shelf 2 can be prevented. Further, when the roller 55 comes into contact with the lower front surface of the shelf 2, the wheel 26 of the front caster 12 turns around the longitudinal axis 46 to the opposite side to the shelf 2 by the reaction. Thereby, the impact at the time of contacting the shelf 2 can be released.
[0043]
Also, as shown in FIGS. 5 and 6, the angle of the monitor 35 is changed by changing the angle of the monitor 35 up and down according to the height of the worker 61 and the position of the face when climbing step 17. The angle can be adjusted to the most visible angle.
[0044]
Further, as shown in FIG. 1, since the battery 41 is located in the lower central portion of the main body 4 where the center of gravity of the carriage 1 is located, the weight is almost uniformly distributed to the wheels 25 and 26, so that the stability of the carriage 1 is increased. Will improve. If a heavy object such as the battery 41 is provided at the front end portion or the left and right side end portions of the main body 4, the position of the center of gravity may be shifted to the front portion or one side portion of the main body 4, and may become unstable. Furthermore, since the weight of the front part and one side part of the main body 4 is partially increased, the impact energy when the roller 55 comes into contact with the shelf 2 is also increased, and the impact is increased. On the other hand, since the battery 41 is disposed at the lower center portion of the main body 4 as described above, the weight of the front portion and one side portion of the main body 4 is not partially increased. The energy of the impact when the touches the shelf 2 is also reduced, and the impact is reduced.
[0045]
Further, since the outer support leg 16 and the intermediate support leg 18 are positioned with a space behind the storage box 40, the outer support leg 16 and the intermediate support leg 18 interfere with the storage box 40. The load acting on each support leg 16, 18 is not applied to the storage box 40.
[0046]
In the above embodiment, as shown in FIG. 1, step 17 is provided in three upper and lower stages, but it may be one stage or a plurality of stages other than three stages.
In the above embodiment, the front caster 12 is a free wheel and the rear caster 13 is a fixed wheel. However, the front caster 12 may be a fixed wheel and the rear caster 13 may be a free wheel. Both 12 and 13 may be free wheels, and both the front and rear casters 12 and 13 may be fixed wheels.
[0047]
In the above embodiment, as shown in FIG. 4, the fixing device 47 and the operation lever 52 are provided on the rear caster 13, but may be provided on the front caster 12.
In the above embodiment, the foot 15 is provided with the three support legs 16, 18, but may be a plurality other than three.
[0048]
In the embodiment described above, the handrail 28 is provided on the upper portion of the main body 4, but the front vertical member 8 and the rear inclined member 10 of the main body 4 may be extended upward to be used as a handrail.
In the above embodiment, the roller 55 is used as an example of the buffer member 55. However, the roller 55 is not limited to the roller 55. For example, an elastic member such as rubber is attached to the front end portion and the left and right end portions of the lower portion of the main body 4. It may be attached.
[0049]
Moreover, the monitor 35 of the said embodiment may be either a button type or a touch panel type.
In the above embodiment, the roller 55 is provided as a buffer member in the main body 4 of the carriage 1, but the buffer member such as the roller 55 may not be provided.
[0050]
In the above-described embodiment, the step body 15 is provided at the rear part of the main body 4 so as to be movable up and down, and the step body 15 is urged upward by the coil spring 23, but the step body 15 is not urged by the coil spring 23 ( The configuration may be such that the coil spring 23 is not provided. Further, the stepping body 15 may be fixed to the rear part of the main body 4.
[0051]
In the above embodiment, the step body 15 is configured in a ladder shape. However, the step body 15 is composed of an inverted V-shaped support leg that can be opened and closed in front and rear, and a plurality of steps 17 provided on the support leg. It may be configured in a stepladder shape, or may be configured to be housed in the main body 4 in a state where the supporting leg of the stepladder-like stepping body 15 is closed and raised. Then, the stepped leg 15 is stably fixed to the floor 60 by tilting the supporting leg forward and backward.
[0052]
In the above embodiment, the intermediate support legs 18 are positioned behind the storage box 40 with a space therebetween. However, even if the intermediate support legs 18 come into contact with the storage box 40 when the tread 15 is raised. Good.
[0053]
【The invention's effect】
As described above, according to the first invention, when the article to be picked is stored at a high place, the lower end of the three support legs is grounded by the operator climbing the step provided on the carriage. It is possible to pick an article from a high place without using a special instrument such as a stepladder. At this time, the worker can work safely at a high place by grasping the handrail.
[0054]
According to the second aspect of the present invention, when the worker climbs up to the uppermost step, the worker's feet can be prevented from coming into contact with the display means, thereby preventing the display means from being damaged. Can do.
[0055]
According to the third invention, the stability of the carriage is improved.
[0056]
According to the fourth aspect of the present invention, when the operator operates the operation unit from the rear side of the cart body, the fixing device is operated and the rear wheel is fixed. Thus, when the worker is on the step, the carriage can be prevented from moving carelessly, and the picking operation can be performed safely. Further, after the completion of picking, the operator can operate the operation unit from the rear of the main body of the carriage to release the fixing of the rear wheels, thereby allowing the carriage to move.
[0057]
In addition, both climbing up and down to the step and the operation of the operation unit can be performed from the rear side of the carriage body, so that the operator does not have to walk around and can perform the work quickly. Furthermore, since the lower end of the outer support leg is located behind the rear wheel, the operation part is provided on the side of the rear wheel, so when operating the operation part, the outer support leg Will not interfere with the operation.
[0058]
According to the fifth aspect of the invention, the support leg does not interfere with the battery, and a load acting on the support leg is not applied to the battery.
According to the sixth aspect of the present invention, the operator can easily move the cart by pushing and pulling the cart with the push-pull portion.
[0059]
According to the seventh aspect of the present invention, when the buffer member comes into contact with another structure such as a shelf, the impact received by the carriage at the time of contact can be reduced, and damage to the carriage or other structure can be prevented.
[0060]
According to the eighth aspect of the invention, when the buffer member comes into contact with another structure such as a shelf, the front wheel turns around the longitudinal axis toward the side opposite to the other structure. Thereby, the impact at the time of contacting with another structure can be released.
[Brief description of the drawings]
FIG. 1 is a side view of a picking cart according to an embodiment of the present invention.
FIG. 2 is a front view of the picking cart.
FIG. 3 is a rear view of the picking cart.
FIG. 4 is a view showing a structure of a fixing device for a rear caster of the picking cart.
FIG. 5 is a side view when the picking cart is moved.
FIG. 6 is a side view showing a picking operation at a high place using the picking cart.
FIG. 7 is a perspective view of a conventional picking cart.
[Explanation of symbols]
1 Picking cart 2 Shelves (other structures)
3 article 4 body 14 support part 15 stepping body 16, 18 support leg 17 step (step)
25, 26 Wheel 28 Handrail 35 Monitor (display means)
40 Storage box (container)
41 Battery 44 Handle (push part)
46 Vertical axis 47 Fixing device 52 Operation lever (operation part)
55 Roller (buffer member)

Claims (8)

Several wheels are provided at the bottom of the body,
The wheels consist of a pair of front wheels provided on the front of the main body and a pair of rear wheels provided on the rear of the main body,
The main body is provided with a support portion for supporting an article, a stepping body, and a handrail extending above the main body,
The tread has a step for raising and lowering and three support legs,
The three support legs consist of a pair of left and right outer support legs and an intermediate support leg provided between the pair of outer support legs,
The lower end of each support leg is configured to be grounded ,
The lower ends of the pair of outer support legs are located behind the pair of rear wheels,
A picking carriage characterized in that a lower end of an intermediate support leg is located between a front wheel and a rear wheel and between the left and right of these wheels . The main body is provided with a display means for displaying the contents of the picking work,
2. The picking cart according to claim 1, wherein the display means is located above and in front of the uppermost step . 3. The picking cart according to claim 2, wherein a battery for supplying power to the display means is provided in the vicinity of the lower center of gravity of the main body . The treadle is provided at the rear of the main unit,
A fixing device is provided to fix the rear wheels,
An operation unit for operating the fixing device is provided on the side of the rear wheel,
The picking cart according to any one of claims 1 to 3, wherein the operation unit is configured to be operable from a rear side of a main body having a stepping body . The battery is provided at the bottom of the main body,
4. The picking cart according to claim 3, wherein each of the support legs is located on the rear side of the battery . The picking cart according to any one of claims 1 to 5, wherein a push-pull portion for pushing and pulling the cart is provided in a part of the handrail . A plurality of shock-absorbing members are provided in the main body to reduce the impact when contacting other structures,
The picking cart according to any one of claims 1 to 6, wherein the buffer member protrudes to the left and right sides and to the front of the main body . Cushioning members are provided on both sides of the front part of the main body to reduce the impact when coming into contact with other structures.
The picking cart according to any one of claims 1 to 7, wherein a front wheel provided at a front portion of the main body is configured to be turnable about a longitudinal axis .

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