JP3796829B2 - Pallet truck - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pallet truck used when transporting a reel or drum-like heavy member.
[0002]
[Prior art]
FIG. 11 is a perspective view of a commonly used pallet truck and a heavy member loaded on the pallet. In FIG. 11, reference numeral 1 denotes a U-shaped fork on which the member 7 is loaded, and the two fingers 1A and 1B Rear wheels 2A and 2B are provided on the lower surfaces of the respective tip portions, and front wheels 3 are provided on the lower surfaces of the root portions to which the fingers 1A and 1B are connected.
[0003]
Reference numeral 4 denotes a handle portion which is composed of a rod body portion 4A extending upward from the side portion of the front wheel 3 and a handle portion 4B at the tip thereof, and the direction operation of the front wheel 3 can be performed by rotating the handle portion 4B. The fork portion raising pump 5 is pressurized by a tilting operation, and a control lever 6 for controlling the fork portion raising pump 5 is mounted on the rod body portion 4A.
[0004]
Next, a method for operating this pallet track will be described.
When the reel 7 or the drum-shaped member 7 is transported using this pallet track, the member 7 is first loaded on the pallet 8, and then the fingers 1A and 1B of the pallet track are placed in the side holes 8A of the pallet 8. Are inserted while being guided by the turning operation of the handle portion 4.
[0005]
Further, the fork part raising pump 5 is pressurized by tilting the handle part 4, the pallet 8 is lifted and carried by raising the fork 1, and the handle part 4 is operated, After the loaded pallet 8 is transported (pulled) to a predetermined location, the control lever 6 mounted on the rod body portion 4A is operated for a predetermined operation to lower the pressure of the fork portion raising pump 5 and thereby fork 1 Is lowered, the pallet 8 is lowered, and the pallet truck is pulled out of the pallet 8 and moved by operating the handle portion 4.
[0006]
[Problems to be solved by the invention]
However, in the conventional pallet truck, when the member 7 is transported, the member 7 is first loaded on the pallet 8 and then transported to a predetermined place by the pallet truck, and then the member 7 is further lowered from the pallet 8. There is a problem that the efficiency of the transporting work is poor because of the loading and unloading of the member 7 on the pallet 8.
[0007]
It is an object of the present invention to provide a pallet truck that is efficient in loading and unloading members and carrying work.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the pallet truck of the present invention connects a bar-shaped fixing bar so as to straddle two fingers on the base part side of a U-shaped fork of a pallet truck that is generally used , A substantially T-shaped control bar is mounted on the finger so that it pivots around the supporting shafts respectively disposed at the tips of the two fingers and protrudes between the fingers, and is connected to the control bar by a connecting rod. An operation lever is provided in the vicinity of the handle, and when the control bar protrudes between the fingers by operating the operation lever, a stopper is provided on the finger to receive the load of the reel or drum-like member to be loaded via the control bar. It is a configuration.
[0009]
According to the present invention, when transporting a reel or drum-shaped heavy member, a pallet truck with an efficient loading and unloading operation can be obtained.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention includes a fork portion having a front wheel on the lower surface thereof connected to a base portion of two fingers arranged side by side with a rear wheel on the lower surface of the tip portion, and an upper end. A handle portion that is provided with a handle portion so as to extend upward from the side portion of the front wheel and that operates the direction of the front wheel by a turning operation, and is pressurized by the tilting operation of the handle portion to raise the fork portion. A fork raising pump , which is connected to a bar-like fixed bar so as to straddle two fingers arranged in parallel at the base of the fork, and supporting shafts respectively disposed at the tips of the two fingers A T-shaped control bar is mounted on the finger so that it pivots around the finger and protrudes between the fingers, and an operation lever connected to the control bar by a connecting rod is provided near the handle to operate the operation lever. When the control bar projecting between more fingers, a stopper for receiving a load of the reel or drum-shaped member are stacked via the control bar is obtained by a structure in which the finger, the reel or drum-like heavy member When transporting, it is possible to load and unload transported items between the fixed bar and the control bar by operating the operation lever while the operator is not directly touching the control bar. It has the effect of providing a pallet truck that is efficient, safer and easier to use.
[0014]
The invention described in claim 2 is the invention described in claim 1, wherein a plurality of mounting portions are provided on each finger so that the connecting position of the fixing bar can be varied at a predetermined pitch. There is an effect that it is possible to provide a pallet truck with good workability in which the position of the fixing bar can be adjusted simply by inserting the fixing bar into the mounting portion at a position suitable for the outer diameter of the reel or drum-like heavy member.
[0015]
A third aspect of the invention is the invention according to the first aspect of the invention, wherein the connecting position of the fixed bar is made variable by a feed screw. By rotating the operation handle of the screw, it is possible to provide a pallet truck with good operability that can adjust the position of the fixed bar to the most suitable position for the outer diameter of the reel or drum-like heavy member.
[0016]
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
(Embodiment 1)
FIG. 1 is a perspective view of a pallet truck according to a first embodiment of the present invention. In this embodiment, the same components as those described in the prior art are denoted by the same reference numerals and described. Omitted.
[0017]
As shown in the figure, reference numeral 1 denotes a U-shaped fork for carrying a load, which is provided with rear wheels 2A and 2B on the lower surfaces of the front ends of the two fingers 1A and 1B, respectively, and the base to which the fingers 1A and 1B are connected. A front wheel 3 is provided on the lower surface of the part, and 4 is a handle part comprising a rod body part 4A extending upward from a side part of the front wheel 3 and a handle part 4B at the tip thereof. The direction of the front wheel 3 can be controlled by the operation, and the fork portion raising pump 5 is pressurized by the tilting operation, and the control lever 6 for controlling the fork portion raising pump 5 is mounted on the rod body portion 4A. This is the same as in the prior art.
[0018]
And the fixing bar 9 which bridges between the fixing part 9A of the base part of the two fingers 1A and 1B, and the receiving parts 10A and 10B each having an L-shaped groove on the opposing surface of the tip part of the fingers 1A and 1B. The control bar 11 that bridges between the groove portions of the receiving portions 10A and 10B is detachably held.
[0019]
When the reel or drum-shaped heavy member 7 is transported by the pallet truck configured as described above, the following is performed.
[0020]
First, a reel or drum-shaped member 7 whose central axis is parallel to the floor surface is placed in the opening formed by fingers 1A and 1B of the U-shaped fork 1 of the pallet truck with the control bar 11 removed from the radial direction. Then, it is guided and inserted by a turning operation of the handle portion 4.
[0021]
And after making one side of the outer peripheral part lower part of member 7 contact fixed bar 9 which bridges between the base parts of fingers 1A and 1B, the receiving part of the tip part of fingers 1A and 1B under member 7 The control bar 11 is fitted and fixed in the groove portions of 10 </ b> A and 10 </ b> B so that the reel or drum-shaped member 7 does not roll out from the opening of the U-shaped fork 1.
[0022]
Next, by tilting the handle portion 4, the fork portion raising pump 5 is pressurized and the fork 1 is raised, thereby fixing the control bar 11 and the control bar 11 attached to the fingers 1A and 1B of the fork 1. Then, the reel or drum-shaped member 7 is lifted.
[0023]
And after operating the handle | steering-wheel part 4 and carrying the member 7 to a predetermined place (pulling), by operating the control lever 6 with which the rod part 4A was mounted | worn by predetermined | prescribed operation, the fork part raising pump 5 The fork 1 is lowered by lowering the pressure, the member 7 is lowered to the floor, the control bar 11 bridging between the tips of the two fingers 1A, 1B is removed from the receiving parts 10A, 10B, and the handle part 4 is operated. By moving the pallet truck away from the member 7, the movement is completed, and an efficient transport operation can be performed.
[0024]
(Embodiment 2)
FIG. 2 is a perspective view of a pallet truck according to the second embodiment of the present invention.
[0025]
Although this embodiment has a fixing bar 9 that bridges between the fixing portions 9A at the base portions of the two fingers 1A and 1B as shown in FIG. One of the fingers 1A and 1B has a holding portion 13 to which one control bar 12 is slidably attached at the tip of 1B, and the other finger 1A has the control bar 12 at the tip. It is configured to have a receiving portion 14 having a L-shaped groove portion that can be held, and can perform an efficient transport operation similar to the first embodiment, and the control bar 12 is attached to the pallet truck integrally. Therefore, the control bar 12 can be easily handled because there is no risk of losing the control bar 12.
[0026]
In place of the configuration in which the control bar 12 is slid, as shown in FIG. 3, one control bar 15 can be rotated at the tip of 1B, which is one of the two fingers 1A and 1B. The same effect can be obtained by providing a receiving portion 16 having an L-shaped groove for holding the control bar 15 at the tip end of the other finger 1A.
[0027]
(Embodiment 3)
FIG. 4 is an inclined view of a pallet truck according to the third embodiment of the present invention.
[0028]
As shown in the figure, the present embodiment has the fixing bar 9 that bridges between the fixing portions 9A at the base portions of the two fingers 1A and 1B, as in the first embodiment. A control bar 17 having substantially the same size is attached to each holding portion 18 at the tip of each of the two fingers 1A and 1B so as to be slidable, and a projecting bridge is formed between the two fingers 1A and 1B. Compact, easy to carry as efficiently as in the first embodiment, and easy to handle without fear of losing the control bar 17 because the control bar 17 is integrally attached to the pallet truck. It is.
[0029]
In place of the configuration in which the control bar 17 is slid, as shown in FIG. 5, a control bar 19 having substantially the same dimensions is rotatably attached to the respective distal ends of the two fingers 1A and 1B. The receiving part 20 which has the L-shaped groove part which can hold | maintain 19 each is provided, the structure which protruded and bridged between the two fingers 1A and 1B, or two fingers 1A as shown in FIG. T-shaped control bars 21A and 21B having substantially the same dimensions are attached to the respective end portions of 1B so as to be rotatable around the respective support shafts 21A1 and 21B1, and a projecting bridge is formed between the two fingers 1A and 1B. A similar effect can be obtained by providing the stopper portions 22A and 22B that receive the load of the member 7 when protruding.
[0030]
(Embodiment 4)
FIG. 7 is a perspective view of a pallet truck according to the fourth embodiment of the present invention.
[0031]
As shown in the figure, the present embodiment has a fixing bar 9 that bridges between the fixing portions 9A of the base portions of the two fingers 1A, 1B, and is provided at each of the tips of the fingers 1A, 1B. The T-shaped control bars 21A and 21B having the same dimensions are attached so as to project and bridge between the two fingers 1A and 1B by rotating around the respective support shafts 21A1 and 21B1. The stopper portions 22A and 22B for receiving the load of the second embodiment are the same as those in the third embodiment, but the support shaft 23 straddling the two fingers 1A and 1B is rotatably attached in the vicinity of the handle portion 4 The control lever 24 attached to one end of the support shaft 23 and the control bars 21A and 21B are connected by connecting rods 25A and 25B.
[0032]
When the reel 7 or the drum-shaped member 7 is transported using the pallet truck configured as described above, the member 7 is inserted into the opening formed by the fingers 1A and 1B of the U-shaped fork 1 while being guided. By tilting the operation lever 24, the control bars 21A, 21B are fixed by protruding bridges between the fingers 1A, 1B via the connecting rods 25A, 25B, and the operator directly controls the control bar 21A. , 21B, the member 7 can be fixed in the opening of the U-shaped fork 1 while staying on the handle portion 4 side, and a safer and more convenient pallet truck can be provided.
[0033]
(Embodiment 5)
FIG. 8 is a perspective view of a pallet truck according to the fifth embodiment of the present invention.
[0034]
As shown in the figure, the present embodiment is almost the same as that described in the fourth embodiment, except that the fixing bar 9 that bridges the root portions of the two fingers 1A and 1B is used. A plurality of mounting screw holes 1A1 and 1B1 are provided on the fingers 1A and 1B so that the mounting position can be moved at a predetermined pitch, and is suitable for reels or drum-shaped members 7 having various outer peripheral diameters. The mounting position can be selected and set.
[0035]
The fixing bar 9 has a configuration in which the mounting position is set by screwing 9A. However, as shown in FIG. 9, the mounting position of the fixing bar 26 that bridges between the root portions of the two fingers 1A and 1B is set. A similar effect can be obtained by providing a plurality of mounting portions 27A and 27B having L-shaped groove portions that can be selectively set, and workability can be improved.
[0036]
Further, as shown in FIG. 10, a fixing bar 28 for bridging the roots of the two fingers 1A and 1B is attached to the feed screws 29A and 29B on the fingers 1A and 1B, and one of the feed screws 29A and 29B is attached. The operation handle 31 is rotationally transmitted by gears 29A1, 29B1 (not shown) and a chain 30 that are respectively attached between the two feed screws 29A, 29B. Thus, the two feed screws 29A and 29B are rotated by the gears 29A1 and 29B1 and the chain 30, so that the fixed bar 28 can be moved to an arbitrary position, and the operability is further improved.
[0037]
Of course, the same effect can be obtained if the rotation transmission method of the feed screw is replaced with other general rotation transmission means such as a combination of a gear and a rack or a combination of a pulley and a belt.
[0038]
【The invention's effect】
According to the present invention as described above, to generally U-shaped fork of a pallet truck to be used, a fixing bar bridging between the root of the two fingers, each distribution the distal end of the two fingers A substantially T-shaped control bar is mounted on the finger so that it pivots about the provided support shaft and protrudes between the fingers, and an operation lever connected to the control bar by a connecting rod is provided near the handle part, When the control bar protrudes between the fingers due to the operation of the operation lever, a stopper that receives the load of the loaded reel or drum-like member through the control bar is provided on the finger, thereby transporting a heavy reel or drum-like member In this case, it is possible to provide a pallet truck that is more efficient in loading and unloading and transporting operations, safer, and easier to use.
[Brief description of the drawings]
1 is a perspective view of a pallet truck according to a first embodiment of the present invention. FIG. 2 is a perspective view of a pallet truck according to the second embodiment. FIG. 3 is a perspective view of another pallet truck. 4] A perspective view of a pallet truck according to the third embodiment. [FIG. 5] A perspective view of another pallet truck. [FIG. 6] A plan view of the main part of the other pallet truck. [FIG. FIG. 8 is a perspective view of a pallet truck according to the fifth embodiment. FIG. 9 is a perspective view of another pallet truck. FIG. 10 is a perspective view of the other pallet truck. FIG. 11 is a perspective view of a conventional pallet truck.
1 U-shaped forks 1A, 1B Fingers 1A1, 1B1 Mounting screw holes 2A, 2B Rear wheel 3 Front wheel 4 Handle portion 4A Rod body portion 4B Handle portion 5 Fork portion raising pump 6 Control lever 7 Reel or drum-shaped member 9 , 26, 28 Fixing bar 9A Fixing part 11, 12, 15, 17, 19, 21A, 21B Control bar 10A, 10B, 14, 16, 20 Receiving part 13, 18 Holding part 21A1, 21B1 Support shaft 22A, 22B Stopper part 23 Support shaft 24 Operation lever 25A, 25B Connecting rod 27A, 27B Mounting portion 29A, 29B Feed screw 29A1, 29B1 Gear 30 Chain 31 Operation handle

Claims (3)

Connected to the bottom of each of the two fingers in parallel with the rear wheel on the lower surface of the tip, and the fork with the front wheel on the lower surface, and the handle on the upper end, the upper side from the side of the front wheel a handle portion for operating the direction of the front wheels by mounted in rotation operation to extend, pressurized by tilting operation of the handle portion consists fork increase pump for raising the fork, two on the fingers A bar-shaped fixed bar is connected so as to straddle, and a substantially T-shaped control bar is projected so as to rotate around the supporting shafts respectively disposed at the tip portions of the two fingers and project between the fingers. Is attached to the finger, an operating lever connected to the control bar by a connecting rod is provided in the vicinity of the handle portion, and the control bar is interposed between the fingers by operating the operating lever. There when projected, tiller reel or drum-like member conveying provided with a stopper for receiving a load of the reel or drum-shaped member are stacked via the control bar to the finger. Pallet truck according to claim 1 Symbol mounting provided with a plurality of mounting portions on each finger to the coupling position of the fixing bar freely variable at a predetermined pitch. Pallet truck according to claim 1 Symbol placement was variably by a feed screw the coupling position of the fixed bars.

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