JP2002002494A - Carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability by simplifying the whole constitution. SOLUTION: The carrying device is formed by assembling a carriage 10, left/right raising/lowering members 21 and 21 mounted on the carriage 10, a drive frame 22 raising the raising/lowering members 21 and 21, and a lock member 31. The raising/lowering members 21 and 21 can lock the raised state via the lock member 31 by stepping down a pedal 23 on a drive frame 22 so as to hold a vessel Y, and can gently lower the vessel Y by releasing the lock via an auxiliary pedal 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport device which has a simplified overall structure and is easy to use.

[0002]

2. Description of the Related Art When manually transporting heavy articles, a transport device equipped with a lifter may be used.

[0003] A conventional transport device is constructed by mounting a hydraulic or chain block type lifter on a hand truck. Therefore, the article can be transported by manually operating the lifter to lift the article from the floor surface, pushing the cart, and arbitrarily moving the article.

[0004]

According to the prior art, since the lifter is of a hydraulic type or a chain block type, there is a problem that the overall structure is complicated and the product price tends to be excessive. . In addition, the hydraulic lifter has a problem that it is difficult to operate the relief valve for releasing the hydraulic pressure when the article is dropped on the floor, and the article is often dropped suddenly to give an excessive impact.

SUMMARY OF THE INVENTION In view of the above-mentioned problems of the prior art, an object of the present invention is to simplify the entire structure by combining left and right lifting members, a foot-operated drive frame, and a lock member on a bogie. It is an object of the present invention to provide a transport device that can reduce the cost and improve the operability.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention comprises a truck, a left and right lifting member mounted on the truck, a foot-operated drive frame for driving the lifting member upward, and a lifting member. And a lock member that locks the ascending state.

[0007] The drive frame can be urged upward via a spring.

Further, the lock member can lock the lift member by preventing the drive frame from rising.

Further, the lock member can automatically lock the elevating member by depressing a pedal on the drive frame, and can unlock the elevating member via an auxiliary pedal mounted on the drive frame.

The elevating member may be provided with a replaceable attachment.

[0011]

According to the structure of the present invention, the foot-operated drive frame can step up and down to drive the left and right elevating members upward to separate the article to be conveyed from the floor surface. Therefore, if the lifting member is locked in the raised state via the locking member and the carriage is moved, the article can be arbitrarily moved and transported. The drive frame, for example, steps down to the lower limit to unlock the elevating member by the lock member, gradually reduces the amount of stepping, and slowly lowers the elevating member, so that the article can be quietly placed on the floor. Can be taken down.

The drive frame can be set at an upper standby position in preparation for a stepping operation by urging the drive frame upward through a spring.

The lock member can lock the left and right elevating members in common by preventing the drive frame from rising, and by automatically operating the pedal on the drive frame to automatically lock the elevating member, The lock operation can be completed at once following the raising operation of the member.

The lock member releases the lock of the elevating member via the auxiliary pedal mounted on the drive frame, so that the article held via the elevating member does not suddenly fall on the floor. This is because when the auxiliary pedal is depressed to release the lock of the elevating member, the drive frame at that time receives a downward pedaling force via the auxiliary pedal and does not jump upward. The auxiliary pedal is
By arranging it so as to overlap the pedal on the drive frame, it is possible to assemble the drive frame compactly.

The exchangeable attachment attached to the elevating member can be selected according to the shape of the article, and can be adapted to an article of any shape.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

The transport device includes a cart 10 for manual pushing, left and right elevating members 21, 21 mounted on the cart 10, and a pedal 2.
3 with a foot-operated drive frame 22 and a locking member 3
1 as a main member (FIG. 1).

The bogie 10 has a structure in which wheels 12, 12 are attached to the front end of a frame body 11 having a front open horizontal frame shape, and casters 14 with brakes are attached to a rear portion of the frame body 11. The frame body 11 is provided with a handle 11a for hand pushing at a rear portion thereof.
2 is a bracket 1 at the front of the frame body 11
2b is rotatably mounted. Also, the caster 14
Is a bracket 1 attached rearward to the frame body 11.
3 attached to the rear end.

The lock member 31 includes brackets 32, 3
2. It is attached to one side surface of the bracket 13 via an intermediate shaft 33 so as to be swingable right and left (FIGS. 1 and 2). Note that the brackets 32, 32
A stopper block 32b is fixed on the reinforcing plate 32a between the brackets 32, 32. The shaft 33 is provided with an auxiliary spring 33a for urging the upper portion of the lock member 31 toward the bracket 13, that is, inward. The lock member 31 has an arc-shaped guide surface 31a formed in the upper inside, and a downward step 31b below the guide surface 31a.
Are formed. The lock member 31 is formed with a stopper 31c that abuts against the stopper block 32b and defines an inward swing limit. An arc-shaped guide surface 31d is formed outside the shaft 33 below. ing.

The drive frame 22 is vertically swingably connected to left and right support bases 25 attached to the frame body 11. However, each support base 25
By fixing the lower front mounting portion 25b inside the front bracket 12b of the frame body 11,
It is arranged upward in the middle of the frame body 11.
The drive frame 22 has left and right forward-facing arms 22b, 22b formed at both ends of a rear connecting portion 22a, and an intermediate portion of each arm 22b is rotatably connected to the support base 25. The connecting portion 22a has an intermediate portion bent upward in the shape of a crank behind the handle 11a.
2c is projected rearward. Also, drive frame 2
2 is urged upward by a tension spring 22d connected to the handle 11a via a short rod 11b.

A pedal 23 is attached rearward to a connecting portion 22a of the drive frame 22 via a bracket 23a. However, a bracket 23a having the same width as the pedal 23
Are erected on the lower surface of the pedal 23 and screwed to the rear surface of the drive frame 22. On the pedal 23, an auxiliary pedal 24 is disposed so as to overlap. The auxiliary pedal 24 is sufficiently shorter than the pedal 23,
b is vertically provided on one side of the tip. The auxiliary pedal 2
4 has a collar 2 through which the shaft 24a is rotatably inserted.
4a1 is fixed, and the shaft 24a is supported by brackets 23b, 23b standing upright on the base of the pedal 23. The auxiliary pedal 24 includes a torsion spring 2 mounted on a shaft 24a.
It is urged upward through 4a2, and the maximum opening angle with respect to the pedal 23 is defined through a stopper (not shown).

The lifting members 21 and 21 are driven by a driving frame 22.
Are connected to the respective ends of the left and right arm portions 22b, 22b,
A horizontally long push-up portion 21a is formed integrally with the upper end.
That is, the lower end of the elevating member 21 is rotatably connected to the tip of the arm 22b, and the middle of the elevating member 21 and the upper end of the support base 25 are connected via the link 25a. 25a, support base 25,
Together with the arm portion 22b, a four-bar link is formed. Therefore, the drive frame 22 is operated by depressing the pedal 23 to swing the rear portion downward (arrow K1 in FIG. 1).
Direction), the ascending and descending members 21, 21 can be driven up via the four-bar link, and when the stepping operation of the pedal 23 is stopped, the ascending and descending members 21, 21 can be lowered to the lowermost limit via the spring 22d. . The elevating members 21, 21
The lower end of each is defined by contacting the lower end thereof with the mounting portion 25b of the support base 25.

Such a transport device can move and transport a large-sized container Y containing an arbitrary article containing a liquid, for example, as follows.

When the pedal 23 is not depressed, the drive frame 22 sets the pedal 23 to the upper standby position via the spring 22d (FIG. 1), and holds the elevating members 21, 21 at the lower limit. At this time, the auxiliary pedal 24 is open above the pedal 23, and the lock member 31 applies the stopper 31c to the stopper block 32 via the auxiliary spring 33a.
b (solid line in FIG. 3), and the upper part of the guide surface 31a is positioned below the lock piece 22c.

When transporting the container Y, the carriage 10 is moved via the handle 11a, and the container Y is stored in the frame main body 11 (FIG. 1).
a and 21a are positioned below the outer flange Y1 of the container Y. Next, when only the pedal 23 is depressed against the spring 22d (in the direction of the arrow in FIG. 3) and the lifting members 21 are raised via the drive frame 22, the push-up portions 21a,
1a is engaged with the outer flange Y1 from below, and the container Y
Can be raised and separated from the floor F (FIG. 4).

At this time, the lock member 31 is configured such that the lock piece 22 c descending with the drive frame 22 is
a and swings outward (dotted line in FIG. 3). When the lock piece 22c descends below the step 31b (two-dot chain line in the figure), the lock member 31 reversely swings inward via the auxiliary spring 33a, and the step 31b moves to the lock piece 22c. Engages to prevent the drive frame 22 from rising,
The container Y is automatically locked with the elevating members 21
Can be maintained at a predetermined level D from the floor F (FIG. 4). Therefore, the container Y may be transported by moving the cart 10 in any direction via the handle 11a. At this time, the locking piece 22c of the drive frame 22 forms a margin gap d between the lock plate 22a and the reinforcing plate 32a on the bracket 13 that defines the lower limit of the drive frame 22 (two-dot chain line in FIG. 3). .

When lowering the container Y on the floor F, the auxiliary pedal 24 is depressed to release the lock of the lifting members 21, 21 by the lock member 31. That is, the torsion spring 2
When the auxiliary pedal 24 is depressed in opposition to 4a2 (FIG. 5)
Arrow direction), the auxiliary pedal 24 is superimposed on the pedal 23, and the pedal 23 is simultaneously depressed (a two-dot chain line in the figure), and the lock piece 22c of the drive frame 22 is attached to the reinforcing plate 32.
a, and the release piece 24b of the auxiliary pedal 24 is brought into contact with the lower guide surface 31d of the lock member 31.
And the upper part of the lock member 31 swings outward (two-dot chain line in the same figure). Therefore, the lock member 31 can release the drive frame 22 so that the step portion 31b is disengaged from the lock piece 22c and can be lifted. At this time, the drive frame 22 includes the pedal 23 and the auxiliary pedal 24.
Are operated at the same time, so that there is no danger of jumping upward.

Subsequently, the drive frame 22 is raised by gradually reducing the amount of depression of the pedal 23, and
By slowly lowering the containers 1 and 21, the container Y can be gently lowered on the floor F.

[0029]

[Other Embodiments] The auxiliary pedal 24 may be arranged on one side of the pedal 23 instead of being arranged so as to be superimposed on the pedal 23 (FIG. 6). The pedal 23 is fixed to the drive frame 22, and the auxiliary pedal 24 is
With respect to the drive frame 22, a bracket 24d, a shaft 24a
It is mounted so as to be able to swing up and down through. The auxiliary pedal 24 is formed to have substantially the same length as the pedal 23,
An engagement piece 24e is provided toward the pedal 23 side.
The tip of the auxiliary pedal 24 is slightly bent downward.

Therefore, the auxiliary pedal 24 is provided with a torsion spring 24.
When the stepping operation is performed against a2 (a two-dot chain line in the figure), the lifting member 21 by the lock member 31 via the release piece 24b,
21 is released, the engaging piece 24e is engaged with the pedal 23, and the pedaling force on the auxiliary pedal 24 side is reduced.
3 can be loaded. However, the auxiliary pedal 24
The engaging piece 24e may be omitted as long as the lock member 31 can be unlocked by depressing it, and the drive frame 22 can be prevented from jumping up at the same time. That is, the auxiliary pedal 24 may be mounted on the drive frame 22 independently of the pedal 23.

Each lifting member 21 may be provided with a detachable attachment 21b (FIG. 7). The attachment 21b is screwed to the tip of the elevating member 21 via set screws 21d, 21d, nuts 21d1, 21d1 using the mounting holes 21e, 21e of the mounting member 21c and the mounting holes 21f, 21f of the elevating member 21. be able to. In addition, it is preferable that the inside of the front end of each attachment 21b is smoothly finished in an arc shape so that the container Y can be smoothly guided (FIG. 3).

In the above description, the attachment 21
b is the elevating member 2 according to the shape of the article to be transported.
It may be attached to the middle part or the lower part of one. Further, the attachment 21b may be arbitrarily deformed regardless of FIG. That is, by selecting the attachments 21b, 21b having an appropriate shape, the transporting device can be suitably used not only via the container Y but also when transporting articles via a pallet, a box-shaped case, or the like. it can.

[0033]

As described above, according to the present invention, by combining the bogie, the driving frame for driving the left and right elevating members up, and the lock member, the elevating member is raised via the lock member. The product can be locked down and held, and the product can be gently lowered by releasing the lock.This simplifies the overall configuration, lowers the product price, and improves the operability by simplifying the use operation. There is an excellent effect that can be.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of the overall configuration.

FIG. 2 is an enlarged perspective view of a main part.

FIG. 3 is an explanatory diagram of an operation (1).

FIG. 4 is an operation explanatory view (2).

FIG. 5 is an operation explanatory view (3).

FIG. 6 is an enlarged perspective explanatory view of a main part showing another embodiment.

FIG. 7 is an enlarged exploded perspective view of a main part showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Dolly 21 ... Elevating member 21b ... Attachment 22 ... Drive frame 22d ... Spring 23 ... Pedal 24 ... Auxiliary pedal 31 ... Lock member

Claims (6)

[Claims] 1. A transport comprising: a cart, left and right elevating members mounted on the cart, a foot-operated drive frame for driving the elevating member up, and a lock member for locking the elevating member in an up state. apparatus. 2. The transport device according to claim 1, wherein the drive frame is urged upward via a spring. 3. The transport device according to claim 1, wherein the lock member locks the lifting member by preventing the drive frame from rising. 4. The transport device according to claim 3, wherein the lock member automatically locks the elevating member by depressing a pedal on the drive frame. 5. The transport device according to claim 4, wherein the lock member unlocks the lifting member via an auxiliary pedal mounted on the drive frame. 6. The transport device according to claim 1, wherein a replaceable attachment is attached to the lifting member.