JP3620569B2 - Hand-carried cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hand-loaded load carrying carriage provided with a load placing table for placing and supporting a load to be carried.
[0002]
[Prior art]
Such a hand-held type load carrying cart is for loading a load on a loading table and performing a load carrying operation easily. For example, various types of processing apparatuses collect the processed articles and collect the collected articles. Instead, it is often used when untreated articles are supplied to the processing apparatus.
When taking such an article conveyance form, generally, a delivery position for entering and exiting the article is set in the processing apparatus, and the hand-held load carrier cart uses the delivery position as a place to which the load is transferred. . In the actual load transfer work, the unprocessed article is loaded as a load on the hand-loaded load transfer carriage and transferred to the installation position of the target processing apparatus, and the processed article positioned at the delivery position in the processing apparatus is loaded. After receiving, the unprocessed article is transferred to the delivery position.
[0003]
Accordingly, the hand-loaded load transporting cart requires at least two loading platforms, that is, a loading platform for receiving and placing processed articles and a loading platform for placing unprocessed articles. Must be positioned at a transfer position with the processing apparatus.
Conventionally, as the arrangement of the loading table satisfying such conditions, a type in which the two loading tables are fixedly arranged side by side, a type in which the two loading tables are arranged side by side and the two loading tables are movable up and down, and Is considered.
In the form in which the two loading platforms are fixedly arranged side by side, first, the position of the hand-carried load carrying carriage is adjusted so that the empty loading table is positioned at the position corresponding to the delivery position of the processing device, and the processing of the delivery position is performed. After the finished goods are transferred to the hand-carried load transport cart, the hand-carried load transport cart is moved so that the load placing table on which the untreated goods are placed is located at a position corresponding to the delivery position, and the untreated goods are moved. Is transferred to the processing device.
[0004]
Further, in the type in which two loading platforms are arranged side by side and the two loading platforms are movable up and down, the upper loading table corresponds to the delivery position in the processing device with the two loading tables lowered. After the processed article at the delivery position is transferred to the hand-carried load transport cart, the loading stage is placed so that the loading stage on which the unprocessed article is placed is located at a position corresponding to the delivery position. Raise and transfer unprocessed articles to processing equipment.
[0005]
[Problems to be solved by the invention]
Therefore, in the type in which the two loading platforms are fixedly arranged side by side, it is necessary to move the hand-carried cart to receive processed items and supply unprocessed items. In addition, in the type in which the two loading platforms are arranged one above the other and the two loading platforms are movable up and down, it is necessary to lift the two loading platforms up and down, which tends to be unstable.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a push-type load transport cart capable of stably transferring an article while suppressing labor required for the transfer of the article. In the point.
[0006]
[Means for Solving the Problems]
By providing the configuration according to claim 1 above, the loading platforms of the hand-held type load transport carriage are provided side by side vertically, but when the lower loading platform is lowered and positioned at the lower retracted position, The upper loading table is positioned above the upper loading table, and the position of the upper loading table is the transfer position with respect to the load transfer target location.
When the lower loading table is positioned at the transfer position from this state, the lower loading table is moved by interlocking the upward movement of the lower loading table and the lateral movement of the upper loading table. The upper loading platform is positioned at the side retracted position. Conversely, when returning the upper loading table to the transfer position, the upper loading table is moved to the transfer position by linking the movement of the upper loading table to the side and the downward movement of the lower loading table. In addition, the lower loading platform is positioned at the lower retracted position.
[0007]
Therefore, for example, in a state where the upper loading table is positioned at the transfer position, the processed article is received as a load, and the upper loading table on which the received article is loaded is moved to the side waiting position. At the same time, it is possible to operate such as moving the lower loading table on which the unprocessed article is placed to the transfer position and moving the unprocessed article to the transfer target location side. In the middle of performing a series of transfer operations, there is no need to move the hand-loaded load transport carriage, and the upper load placing table moves to the side so that it does not become unstable.
As a result, it has become possible to provide a hand-held type load transport cart that can stably transfer the article while suppressing the labor required for the transfer of the article.
[0008]
In addition, by providing the configuration according to the second aspect, the upper loading table is supported by the guide member that moves out from the transfer position side in the state of being located at the side retracted position.
That is, as a configuration for moving the upper loading table between the transfer position and the side retracted position on the side of the transfer position, a table extending between the transfer position and the side retracted position is provided. It is also possible to use a guide rail that moves and guides the upper loading table on the table, but as described above, the upper loading table is supported by the guide member that moves away from the transfer position side. Thus, it is not necessary to provide such a table, and the area occupied by the hand-carried load transport cart can be reduced.
[0009]
Moreover, by providing the structure of the said Claim 3, the transfer of the load between load transfer object location is performed by the slide fork apparatus provided in the upper side of the position for transfer.
Accordingly, by using the fact that a common transfer position is set for both the upper load table and the lower load table, the load is transferred by a single transfer means to both load tables. Therefore, the configuration of the hand-carried load carrier can be simplified.
[0010]
Moreover, the slide fork apparatus which transfers a load between the interlocking movement operation means and the load transfer object location which interlock | coordinate-moves an upper load mounting base and a lower load mounting base by providing the structure of the said Claim 4. Is operated with a manual operating force.
Therefore, a series of load conveyance and transfer operations are performed manually, and the entire load conveyance operation can be easily performed.
[0011]
In addition, by providing the configuration according to claim 5, when the hand-carried load transporting cart transfers the load to and from the load transfer target location, the engaged portion on the cart side is set as the load transfer target. The carriage main body is positioned by engaging with the engaging portion on the side.
This makes it possible to stably and reliably transfer the load to and from the load transfer target location.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
[First Embodiment]
DESCRIPTION OF EMBODIMENTS Hereinafter, a first embodiment of a hand-loaded load transport cart according to the present invention will be described with reference to the drawings.
As shown in FIG. 1, the hand-carried load transporting carriage V (hereinafter sometimes simply referred to as “cart V”) is provided with two upper and lower loading platforms LH, and above the loading platform LH. A manually operated slide fork device SF that supports the upper portion of the load L and transfers the load L is provided. The cart body MP is provided with a pair of idle wheels 1 as front wheels and a pair of caster wheels 2 as rear wheels when the operator pushes and moves the cart V, and the operator holds the handle 3. Then, the carriage V is pushed and moved to carry the cargo. Hereinafter, the front, rear, left and right of each part of the carriage V are expressed with reference to the moving direction of the carriage V.
[0013]
As shown in FIGS. 1 and 3, the cart main body MP is engaged with the engagement portion 4 provided on the load transfer target location TP side, and the cart main body MP is placed on the floor surface at the load transfer target location. An engaged portion 5 for positioning in a plane along the line is formed.
The engaging portion 4 of the load transfer target location TP is formed as a trapezoidal concave portion in plan view, and the engaged portion 5 of the cart body MP has a shape of the engaging portion 4 as shown in FIG. Four free-rolling rollers 45 that are arranged so as to be able to rotate around the longitudinal axis are provided. The idle roller 45 makes it easy for the engaging portion 4 and the engaged portion 5 to shift to an appropriate engaging posture.
The load transfer target location TP corresponds to, for example, a load receiving / dispensing section of various processing apparatuses, and the carriage V is used to transport the processing object between the processing apparatuses.
[0014]
Nino table LH, as shown in FIG. 1 or the like, and an upper load table 7a and the lower load table 7b is configured by arranging the upper and lower stages, of which the upper loading table 7a, the support frame 2 2 to the vibration absorbing member 23 And a transfer position (position where the upper load mounting table 7a is present in FIG. 4 (a)), and the transfer of the load mounting plate 24. It is configured to be movable between a side retracting position (a position where the upper loading table 7a exists in FIG. 4B) on the side of the use position.
That is, a guide frame 20 is provided at a pair of front and rear sides of the vehicle body at the upper end position of the carriage main body MP, and a guide member 21 guided by the guide frame 20 and retractable to the side of the vehicle body supports the upper load mounting table 7a. The frame 22 is supported so as to be movable in the direction of the guide member 21. A positioning pin 24 a for positioning the load L is attached to the upper surface side of the load placing plate 24.
[0015]
On the other hand, the lower loading table 7b is configured by attaching a loading table 16 to the lower frame 14 via a vibration absorbing member 15, and is located at a lower retracted position (a lower position in FIG. 4 (a)) below the upper loading table 7a. It is possible to move up and down between the position where the side load mounting table 7b exists) and the transfer position (the position where the lower load mounting table 7b exists in FIG. 4B). In the lower loading table 7b, positioning pins 16a for positioning the load L are attached to the upper surface side of the loading plate 16.
[0016]
The lower loading table 7b is lifted and lowered by a lifting mechanism UD shown in FIGS. The elevating mechanism UD includes an elevating body 25 that supports one side of the lower frame 14 of the lower loading platform 7b, a take-up reel 27 that winds up a wire 26 that supports the elevating body 25, and an elevating operation handle 29. A gear coupling mechanism 30 for transmitting the rotation to the take-up reel 27 and a constant load spiral spring 46 for urging the elevating body 25 upward and reducing the elevating operation force are provided. As the operation handle 29 is rotated, the wire 26 is wound or sent out and the lower loading table 7b is moved up and down. When the lower loading table 7b is not lifted or lowered, by operating the lifting / lowering prevention lever 40, the rotation of the take-up reel 27 is blocked by a rotation blocking mechanism (not shown), and the lifting / lowering movement of the lower loading table 7b is blocked. . The elevating body 25 is provided with a guide roller 25a and is guided up and down by an elevating guide rail (not shown). In addition, a damper 50 is attached to the lowermost position of the lifting path of the lifting body 25 to receive the lifting body 25 that descends and absorb the impact.
The upper loading table 7a moves in a traversal manner in conjunction with the raising / lowering operation of the lower loading table 7b, and an interlocking movement operating means RM is provided for the interlocking.
[0017]
As shown in FIG. 2, the interlocking movement operating means RM includes a first arm 10 that is swingably attached to the support frame 22 of the upper loading table 7 a, and one end side is relatively swung to the free end side of the first arm 10. A second arm 11 that is freely connected and whose other end is pivotally supported by a lower portion of the carriage main body MP, an operated arm 12 that swings integrally around the second arm 11 and a coaxial axis; A swing operation member 13 attached to the side load mounting table 7b is provided.
The swinging operation member 13 attached to the lower loading table 7b includes a roller 12a provided on the free end side of the operated arm 12 in the setting region near the lower end of the lower loading table 7b in the range of its vertical movement. An engaging recess 13a to be engaged is formed, and the upper loading table 7a is moved to the side as the engaging recess 13a moves upward. That is, as shown in FIG. 4A, the operator moves up and down from the state where the lower loading platform 7b is located at the lower end position and the roller 12a is engaged with the engaging recess 13a of the swing operation member 13. When the operation handle 29 is rotated to move the lower loading table 7b upward, the operated arm 12, the first arm 10, and the second arm 11 are broken in FIG. Is swung from the position indicated by the double-dotted chain line to the position indicated by the two-dot chain line, and the upper loading platform 7a is pushed sideways from the transfer position indicated by the solid line in FIG. .
When the operated arm 12 swings to the position indicated by the broken line in FIG. 2, the operated arm 12 is disengaged from the engaging recess 13a, and the lower loading table 7b is lifted up to the transfer position as shown in FIG. ).
[0018]
On the other hand, when the operator rotates the elevating operation handle 29 to lower the lower loading table 7b from the transfer position, the arm to be operated is moved to the swing operation member 13 of the lower loading table 7b that moves downward. Twelve rollers 12a come into contact with each other and push down the rollers 12a. As a result, the operated arm 12 and the first arm 10 and the second arm 11 swing to the position indicated by the solid line in FIG. 2, and the upper loading table 7a moves to the transfer position, and FIG. It will be in the state shown.
Note that the lower end of the second arm 11 is locked by a spring 17 locked at a position below the swing axis of the second arm 11 so that the posture of the first arm 11 is stabilized in two postures indicated by a solid line and a broken line in FIG. The middle part of the two arms 11 is urged downward, and the second arm 11 is supported by two stoppers 18a and 18b with dampers.
Accordingly, the movement of the upper loading platform 7a from the transfer position to the side retracted position and the movement of the lower loading platform 7b from the lower retracted position to the transfer position are linked by the interlocking movement operating means RM, and The movement of the upper loading platform 7a from the side waiting position to the transfer position is linked to the movement of the lower loading table 7b from the loading position to the lower waiting position.
[0019]
As described above, since the upper load table 7a and the lower load table 7b are alternately positioned at the transfer position, for transfer of the load L between the load transfer target location TP. A slide fork device SF is provided above the position.
As shown in FIG. 1, the slide fork device SF includes a fixed guide 31, a first fork 32 guided by the fixed guide 31, a second fork 33 guided by the first fork 32, and a second thereof. The fork 33 is provided with a load support portion 34 that is supported so as to be movable in the longitudinal direction of the fork 33, and the whole including the fixed guide 31 is supported by the base 35 so as to be movable up and down. The base 35 is provided with a fork lifting handle 35a for raising and lowering the slide fork device SF. When the fork lifting handle 35a is rotated, the slide fork device SF is raised and lowered by a rack and pinion mechanism or the like (not shown). The load support portion 34 is provided with a pair of left and right claw members 34 a that engage with the flange portion 40 formed on the upper portion of the load L and support the load L.
Accordingly, the movement of the upper load table 7a and the lower load table 7b and the operation of the slide fork device SF are all operated by a manual operation force.
[0020]
Next, a load transfer operation between the load transfer target locations TP will be schematically described.
In the load transfer target location TP, a load L that has been processed by the apparatus is placed, and the cart V first collects the processed load L.
For this reason, the operator engages the engaging portion 4 on the load transfer target portion TP side and the engaged portion 5 of the carriage V to position the carriage main body MP, and supports the load of the slide fork device SF. The upper loading table 7a positioned at the transfer position by loading / unloading operation of the load supporting unit 34 while holding the loading / unloading operation handle 34b provided in the unit 34 and lifting / lowering operation of the slide fork device SF. To be transferred to.
Next, the lifting operation handle 29 is rotated to raise the lower loading table 7b to be positioned at the transfer position, and the unprocessed load L mounted on the lower loading table 7b is loaded. The object is moved to the target location TP side, and the lower loading table 7b is lowered to the lower retracted position by the operation of the lifting operation handle 29, and the transfer operation is completed.
Thereafter, the load L mounted on the upper load placing table 7a is transported toward another device. In the other apparatus, the processed load L is received by the lower load mounting table 7b.
[0021]
[Second Embodiment]
In the first embodiment, the upper loading table 7a is supported by the guide member 21 that moves in and out from the transfer position side, and when the upper loading table 7a is positioned at the transfer position, the guide member 21 is transferred. In this second embodiment, as shown in FIGS. 7 and 8, the upper loading table 7a is moved to the transfer position and the side. A guide rail 60 for moving to the retracted position is fixedly provided on the table 61 of the carriage main body MP.
[0022]
The cooperative operation of the movement of the upper loading table 7a between the transfer position and the side waiting position and the movement of the lower loading table 7b between the lower waiting position and the transfer position is the first embodiment. As in the first embodiment, the structure for this is configured by the first arm 10, the second arm 11, the operated arm 12, and the like.
Further, although not shown, the mechanism for raising and lowering the lower loading table 7b is the same as that of the first embodiment, and the lower loading table 7b is raised and lowered by rotating the lifting operation handle 29.
Therefore, when the operator rotates the lifting operation handle 29 to raise the lower loading table 7b in the lower-retreat position and move it to the transfer position, the upper loading table 7a is moved from the transfer position to the side thereof. If the lower loading platform 7b is lowered and moved to the lower parking position, the upper loading platform 7a moves from the side saving position to the transfer position.
[0023]
Transfer of the load L between the upper load mounting table 7a or the lower load mounting table 7b at the transfer position and the load transfer target location TP is performed by a slide fork device SF disposed above the transfer position. Is called. The specific configuration of the slide fork device SF is slightly different from that of the first embodiment, and includes a fixed guide 70 and a fork member 71 guided by the fixed guide 70. A load supporting portion 72 to be supported is supported so as to be movable in the longitudinal direction of the fork member 71.
A fork member 71 is attached to the fork member 71 to move the load support portion 72 out of the fork by manual operation, and the operator moves the exit / out operation handle 73 in the exit / retreat direction. A timing belt (not shown) is wound around the fixed guide 70, the fork member 71 and the load support portion 72 so that the load support portion 72 moves along the fork member 71. Further, the raising / lowering operation of the fixed guide 70 and the like is provided with a fork raising / lowering handle 74a provided on the base 74 as in the first embodiment.
When the load L is transported by the cart V having the above-described configuration and the load L is transferred to or from the load transfer target location TP, the engaged portion 5 provided in the cart main body MP is loaded. Positioning is performed by engaging with the engaging portion 4 on the target location TP side, and the load L located at the load transfer target location TP is operated on the slide fork device SF to the upper loading platform 7a located at the transfer position. Transfer.
[0024]
Next, the lifting operation handle 29 is rotated to raise the lower loading table 7b to be positioned at the transfer position, and the unprocessed load L mounted on the lower loading table 7b is loaded. The object is moved to the target location TP side, and the lower loading table 7b is lowered to the lower retracted position by the operation of the lifting operation handle 29, and the transfer operation is completed.
Thereafter, the load L mounted on the upper load placing table 7a is transported toward another device. In the other apparatus, the processed load L is received by the lower load mounting table 7b.
In the second embodiment, the direction in which the handle 3 is gripped and the cart V is pushed and the direction in which the cart V is approached and separated from the load transfer target location TP are different. It consists of a ring.
[0025]
[Other Embodiments]
Other embodiments will be listed below.
(1) In the first and second embodiments described above, the interlocking movement operating means RM for interlocking the upper loading table 7a and the lower loading table 7b includes the first arm 10, the second arm 11, and the operated arm 12. However, the specific configuration of the interlocking movement operating means RM can be variously changed. For example, the lower load mounting table 7 includes a rack gear having a set width in the vertical direction, and the fixed side meshes with the rack gear. The pinion gear is arranged so that both gears mesh with each other in the vicinity of the lower end of the lifting range of the lower loading table 7b, and when the pinion gear rotates by raising and lowering the lower loading table 7b, You may comprise so that the mounting base 7a may be driven out.
[0026]
(2) In the first and second embodiments, the slide fork device SF is disposed above the transfer position, and the load L is transferred to and from the load transfer target location TP. Although it comprises, you may comprise so that each of the upper side load mounting base 7a and the lower side load mounting base 7b may be equipped with a roller conveyor etc., and the load L may be transferred.
(3) In the first and second embodiments, the loading operation of the loading table LH is performed by manual operation force. For example, an electric motor is provided and the loading table is driven by the driving force of the electric motor. The LH may be configured to move.
(4) In the first embodiment and the second embodiment described above, the upper loading platform 7a and the lower loading platform 7b are interlocked, and both loading platforms 7a, 7b are configured to move simultaneously. A clutch mechanism is provided for switching the force transmission state between a state in which the rotational force is used as a force to move the upper loading table 7a to the side and a state in which the lower loading table 7b is moved up and down. In addition, the two loading platforms 7a and 7b may be configured to move together in a state where the operation timing is shifted.
[Brief description of the drawings]
FIG. 1 is a side view of a hand-carried load transport cart according to a first embodiment of the present invention. FIG. 2 is a front view of a hand-carried load transport cart according to a first embodiment of the present invention. FIG. 4 is an explanatory view of positioning according to an embodiment. FIG. 4 is an explanatory view of movement of a loading table according to the first embodiment of the invention. FIG. 5 is a front view of a main part according to the first embodiment of the invention. FIG. 7 is a side view of the main part according to the first embodiment of the present invention. FIG. 7 is a rear view of the hand-loaded load transport cart according to the second embodiment of the present invention. Side view of transport cart [Explanation of symbols]
LH loading platform MP cart body RM interlocking movement operating means SF slide fork device 4 engaging portion 5 engaged portion 7a upper loading platform 7b lower loading platform 21 guide member

Claims (5)

It is a hand-held type load carrying carriage provided with a load placing table for placing and supporting the load to be conveyed,
As the loading table, an upper loading table and a lower loading table are arranged side by side up and down,
The presence position of the upper loading table located above the lower loading table is set as a transfer position between the load transfer target location,
The upper loading table is configured to be movable between the transfer position and a side retracted position on its side,
The lower loading table is configured to be movable between the transfer position and a lower retraction position below the transfer position;
The movement of the upper loading table from the transfer position to the side retracted position and the movement of the lower loading table from the lower waiting position to the transfer position are interlocked, and the upper loading table A hand-operated moving operation means for interlocking the movement of the lower loading platform from the transfer position to the lower retracted position is interlocked with the movement of the lower loading platform from the side loading position to the loading position. Cargo cart. 2. The hand-held load carrying carriage according to claim 1, wherein the upper load placing table is supported by a guide member that is moved out of the transfer position side in a state of being located at the side retracted position. The slide fork device for supporting the upper part of the load and transferring the load between the load transfer target locations is provided on the upper side of the transfer position. Hand-carried cart. The hand-operated load transport cart according to claim 3, wherein the interlocking movement operating means and the slide fork device are configured to be operated by a manual operating force. 5. An engaged portion that is engaged with an engaging portion provided on a load transfer target portion side is provided to position the carriage main body portion at the load transfer target portion. A hand-carried cart as described in 1.

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