JPH0721473U - Electric container carrier - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is designed to hold small containers stacked in a plurality of stages by lifting the bottom edge of the container at the bottom of the container.
The present invention relates to an electric container carrier that can be locked in the lifted state and can be transported in all stages at once. [Structure] According to the present invention, a substantially U-shaped leg frame (2) having rolling wheels (3), (4) attached to the front, rear, left and right is connected to the lower end of a guide frame (1) formed in a substantially gate shape. Carrier body to be installed
(10) and a container support fork (5) configured to move vertically along the guide frame (1) and hold the container.
And a chain actuation mechanism (a) that drives the container support fork (5) in the vertical direction and a lock mechanism (b) that is mounted on the leg frame (2) and that brakes the carrier body (10).
And equipped.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric container carrier that can carry a plurality of stacked small containers by gripping the bottom edge of the bottom container and locking it in such a lifted state so that it can be transported all at once. is there.

[0002]

[Prior art]

 Conventionally, there is a container carrier X in which a plurality of stacked small containers are lifted by sandwiching the bottom edge of the bottommost container and can be transported all at once.

As shown in FIG. 7, this is a U-shaped frame 51 with rolling wheels 52 configured to be able to hold the bottom edge of the container Y, and a fork 53 provided inside the frame 51. The container Y is provided with a carrying handle 54, and the container Y is sandwiched by the forks 53, and the container Y is lifted and locked upward so that the stacked containers Y can be carried in the lifted state.

During transportation, a U-shaped frame 51 has a gate-shaped handle 54 which is erected on both sides of the base portion and can be moved arbitrarily.

Further, in order to move the fork 53 up and down, the fork 53 is provided with an operation lever 56 via a link mechanism 55.

Similar to the fork 53, the operating lever 56 has a U-shape, is arranged above the fork 53, and has a lock pedal 57 attached to the approximate center of the base of the operating lever 56. .

The fork 53 is moved upward by the link mechanism 55 by depressing the operation lever 56 by stepping on the pedal 57, and at the same time, the lock pedal 57 is attached to the base edge of the U-shaped frame 51. The forks 53 are configured to be engaged with each other to be locked.

[0008]

[Problems to be solved by the device]

 However, the above-mentioned container carrier X still has the following problems.

That is, since the amount of lifting of the container Y is small from the ground, if the container Y 1 is to be transported to a place higher than the ground, the container Y must be lifted by hand after all.

For example, when it is desired to carry the container Y to the loading platform of the truck, the container carrier X can be easily used up to the vicinity of the truck, but the loading platform can lift the containers Y stacked one by one. I had to carry it in.

The same applies to the case where the container Y is transported from the loading platform to a predetermined place, and the container carrier X can be used only after the container Y is once removed from the loading platform.

Therefore, the transportation of the container Y has a limitation that it can be used only between places on the same plane, and it cannot be said that it is favorable in terms of usability.

Further, since it is a manual type, it is troublesome to lock and unlock the fork 53, and workability is not good.

An object of the present invention is to provide an electric container carrier that can solve the above problems.

[0015]

According to the present invention, a carrier body is provided in which a substantially U-shaped leg frame having rolling wheels attached to front, rear, left and right is continuously provided at a lower end of a guide frame formed in a substantially gate shape, and A container support fork that is vertically movable along the guide frame and holds the container, a chain operation mechanism that drives the container support fork in the vertical direction, and a leg frame that is attached to the carrier frame for braking operation. The present invention relates to an electric container carrier, which comprises a lock mechanism for

Further, in the present invention, the chain operating mechanism connects one end of a chain, which is rotated by a gear interlockingly connected to an electric motor, to an upper side of a container supporting fork, and the other end to a lower side of the fork. It is characterized in that they are connected to each other and a power interrupting mechanism such as a torque limiter is provided between the gear and the electric motor.

Further, according to the present invention, the lock mechanism includes a lock lever that stands upright on a rear portion of the leg frame, a connecting rod that is connected to a base end of the lever frame and is installed in the left-right direction of the leg frame. It is equipped with a link mechanism arranged on the same rod and a lock rod that is linked to the operation of the lock lever via the link mechanism and can freely retract in the vertical direction. Another feature is that the rear rolling wheels are configured to float.

[0018]

【Example】

 The electric-powered container carrier vertically holds a plurality of stacked small containers (hereinafter referred to as “containers”) with the bottom edge of the bottom container sandwiched between them, and the whole container can be transported at once in the lifted state. The lifting operation is performed by a chain operating mechanism driven by an electric motor.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of an electric container carrier A according to the present invention, and FIG. 2 is a side view of the container carrier A.

First, the overall structure of the container carrier A will be described. As shown in FIG. 1, a substantially U-shaped leg frame 2 is continuously provided at the lower end of a guide frame 1 formed in a substantially gate shape. It constitutes the main body 10.

The leg frame 2 is composed of left and right leg portions 2a, 2b and a base portion 2c. The left and right leg portions 2a, 2b and the base portion 2c form a container housing space Q, and within the space Q The container C can be pinched.

Further, rolling wheels 3 and 4 are attached to the front and rear of the left and right leg portions 2a and 2b, respectively, and the rear rolling wheel 4 is swingable for steering. The rolling wheels 4 allow arbitrary direction changes when the container carrier A is moved.

Further, a container support fork 5 is provided in the container accommodating space Q so as to be vertically movable via a chain operating mechanism a, and a lock mechanism b is provided on the base 2c of the leg frame 2. By operating the lock lever 20 of the lock mechanism b provided therein, the rear rolling wheels 4 are not floated above the ground, and the container carrier A can be braked.

Further, in FIG. 1, reference numeral 11 is an operating portion provided on the carrier body 10, and the chain operating mechanism a is driven / stopped by an on / off operation of a start switch 12 provided on the operating portion 11. be able to. Further, the starting switch 12 is also capable of switching between rising and lowering, and can be driven / stopped at any time during rising or lowering.

Further, 13 is a battery as a drive source of the electric container carrier A, 14 is a battery cover, 16 is a carrying handle attached to the guide frame 1, 15 is a limit switch, and the container supporting fork 5 Regulates the upper limit for rising.

The container support fork 5 is configured by connecting the left and right support forks 41, 41 to the back plate 42 at a slightly wider interval than the side surface of the container C. Further, a collar portion 43 is formed on the lower edges of the supporting forks 41, 41.

Further, the above-mentioned back plate 42 is attached to a U-shaped fork mounting plate 44 that slides the guide frame 1 up and down, and as shown in FIG. Four guide rollers 45 are provided on the left and right sides between the frame 1 and the frame 1. With such guide rollers 45, the container support fork 5 attached to the fork attachment plate 44 can be smoothly moved up and down.

The tip of the collar 43 of the supporting fork 41 is curved downward, or the tips of the supporting forks 41, 41 are curved outward so that the left and right bottom edges of the container a can be easily clamped. You can also

As shown in FIGS. 2, 3 and 4, the chain operating mechanism a includes an electric motor M, a gear group G interlockingly connected to the motor M, and a chain 31 for vertically moving the container support fork 5. The chain 31 has a base end 4c of the container support fork 5 connected to the upper end and the lower end thereof, respectively, and is rotated by the transmission gear G1 of the gear group G. The electric motor M uses a motor with an electromagnetic brake.

G2 is an idle gear arranged above the carrier body 10, 30 is a connecting shaft that connects the electric motor M and the gear group G, 32 is a transmission shaft of the transmission gear G1, and 33 is an end of the chain 31. It is a tension spring interposed between the end and the lower part of the container support fork 5.

Further, a torque limiter 34 is provided as a power connection / disconnection mechanism between the transmission gear G1 and the transmission shaft 32. The torque limiter 34 is grounded when the container support fork 5 is lowered. When the load increases, the transmission shaft 32 spins idle so that the chain 31 does not rotate.

As shown in FIG. 5 and FIG. 6, the lock mechanism b has a rock lever 20 which can be tilted upright on the rear right side of the leg frame 2 and has a leg frame at the base end of the lever 20. A connecting rod 21 which is installed in the left-right direction is connected along the base portion 2c of the frame 2.

Further, lock rods 23, which are interlocked with the operation of the lock lever 20 and are vertically retractable, are connected to both ends of the connecting rod 21 via a link mechanism d.

With the above configuration, when the lock lever 20 is tilted toward you, the connecting rod 21 rotates, and the lock rod 23 comes into contact with the ground by the action of the link mechanism d. When the lock lever 20 is tilted further, the lock rod 20 is locked. The grounding point of the rod 23 serves as a power point and the rear rolling wheels 4, 4 float.

Therefore, the electric container carrier A itself is supported by four points of the front rolling wheels 3, 3 and the lock rods 23, 23 fixed to the front rolling wheels 3, 3, so that the electric container carrier A can be locked without moving. it can.

As shown in FIG. 6, the link mechanism d has a lever 26, one end of which is rotatably connected to an arm 25 connected to the connecting rod 21 and the other end of which is rotatably connected to a lock rod 23. It consists of

Then, the tilting movement amount of the lock lever 20 is regulated by the long hole 26 provided in the base portion 2c of the leg frame 2 (see FIG. 1), and when the lever 20 is located at the lowest point, the link mechanism d It is fixed just beyond the threshold point so that the grounding state of the lock rod 23 can be maintained.

In FIGS. 5 and 6, 27 is a lock rod guide, and 28 is a lock mechanism mounting bracket.

Here, a case where the electric container carrier A according to the present invention is actually used will be described below.

For example, when carrying containers C stacked in multiple layers on the ground to the bed of a truck, first, the electric container carrier A is loaded from the side of the bottom container C of the containers C stacked in multiple stages. And the container C is positioned in the container housing space Q formed by the leg frame 2 of the container carrier A.

At this time, the container support fork 5 disposed inside the leg frame 2 holds the left and right bottom edges of the container C, and in this state, the start switch 12 of the operation unit 11 is turned on. To

When the start-up switch 12 is turned on, the electric motor M is driven, the chain 31 rotates via the gear group G, and the container support fork 5 moves upward.

Then, if the start switch 12 is turned off when the container C reaches a necessary height that does not come into contact with the ground during traveling, the container support fork 5 stops rising, and thereafter, the user operates the electric motor. Push the formal container carrier A onto the truck bed.

Then, after further raising the container support fork 5 to position it above the loading platform, the lock lever 20 is tilted to the front and the lock mechanism b is operated to lock and fix the container carrier A in place.

Then, the container support fork 5 is lowered by operating the start-up switch 12, and the fork 5 is brought into contact with the loading platform.

When the container support fork 5 comes into contact with the cargo bed, the transmission shaft 32 idles due to the action of the torque limiter 34, so that the electric motor M does not become overloaded and is safe and easy. 5 can be unloaded on the platform.

As described above, by providing the torque limiter 34, there is no need to make fine adjustments such as raising and lowering the starting switch 12 one by one in order to match the height of the container support fork 5 with the height of the loading platform. The container support fork 5 can be dropped onto the platform very easily. In such a state, the containers C may be sequentially carried to the loading platform, so that the containers C can be easily transported to different heights and the usability is significantly improved.

By the way, since the electric container carrier A is equipped with the limit switch 14, when raising the container C, it is possible to set an upper limit at an appropriate point and stop the container C. Therefore, there is no concern that the container C will rise to an unnecessarily high position and the center of gravity will move upward, causing a fall accident or the like.

When the transportation is completed, the lock mechanism b may be released, the container support fork 5 may be lowered to an appropriate position, and the container support fork 5 may be moved to a predetermined place.

When the container C is further transported, the same operation may be performed again. However, when the container support fork 5 is lowered to the lowest position, if the support fork 5 is grounded, the torque limiter 34 operates. Then, the transmission shaft 32 idles. Therefore, the container support fork 5 stops in the grounded state without turning off the start switch 12 immediately. In such a state, preparation for pinching the next container C is completed.

In this embodiment, the torque limiter 34 as a power connection / disconnection mechanism is configured to operate only when the chain 31 is rotating downward.

As described above, the electric container carrier A according to the present invention can easily carry the containers C stacked in multiple stages simply by performing the switch operation, and can also carry the container C to a high place. It can be done easily.

Further, since the lock mechanism b is provided, the electric container carrier A can be stabilized when the container C is lowered, which is extremely safe.

Although the lock rods 23 of the lock mechanism b are provided on the left and right sides of the connecting rod 21 in this embodiment, they may be provided substantially at the center of the connecting rod 21. In this case, for example, the lock mechanism b can be reliably operated even when the ground contact surface is uneven.

[0056]

[Effect of device]

 According to the present invention, a carrier body having a substantially U-shaped leg frame with rolling wheels attached to the front, rear, left and right is continuously attached to the lower end of the guide frame formed in a substantially gate shape, and is vertically movable along the guide frame. The container supporting fork for holding the container, the chain operating mechanism for vertically driving the container supporting fork, and the lock mechanism for mounting the carrier body on the leg frame and for braking the carrier body. By doing so, it is possible to easily transport containers stacked in multiple stages at the same time in all stages.

In addition, it is possible to carry the products to different heights without manually lifting them, thereby reducing fatigue and significantly improving work efficiency.

In the chain operating mechanism, one end of the chain that is rotated by a gear that is interlocked with the electric motor is connected to the upper side of the container supporting fork, and the other end is connected to the lower side of the fork. By installing a power limiting mechanism such as a torque limiter between the gear and the electric motor, the chain rotation will stop when the container support fork comes in contact with the ground, without stopping the chain operating mechanism. Since the fork is stopped, it is not necessary to determine the proper position for holding the container, and the operation is extremely easy.

Further, since the raising and lowering of the container can be performed only by operating the switch, the work becomes extremely easy.

Further, the lock mechanism is arranged on the lock lever, which is erected on the rear portion of the leg frame, and a connecting rod which is connected to the base end of the lever frame and is erected in the left-right direction of the leg frame. It is equipped with a link mechanism that is installed and a lock rod that is linked to the operation of the lock lever via the link mechanism and that can be retracted in the vertical direction.When braking, the lock rod comes into contact with the ground and rolls rearward. Since the driving wheel is configured to float, the carrier body can be locked and locked simply by operating the lock lever, so safe work can be performed without wobbling when the container is unloaded.

Further, since the structure is simple, breakdown and maintenance are easy.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric container carrier according to the present invention.

FIG. 2 is a side view of the container carrier.

FIG. 3 is a rear view of the chain operating mechanism.

FIG. 4 is a side view of the chain operating mechanism.

FIG. 5 is an explanatory view of the lock mechanism as viewed from the rear.

FIG. 6 is a side view of the lock mechanism.

FIG. 7 is an explanatory view showing a conventional container carrier.

[Explanation of symbols]

 1 Guide frame 2 Leg frame 3 Rolling wheel 4 Rolling wheel 10 Carrier body 20 Lock lever 21 Connecting rod 23 Lock rod 31 Chain 32 Torque limiter 5 Container support fork a Chain operating mechanism b Lock mechanism d Link mechanism M Electric motor

Claims (3)

[Scope of utility model registration request] 1. A guide frame (1) formed in a substantially gate shape.
Along with the guide frame (1), the carrier main body (10) is provided at the lower end of which the substantially U-shaped leg frame (2) with the rolling wheels (3), (4) attached to the front, rear, left and right is connected. It is configured to move up and down,
Attach the container support fork (5) that holds the container (C), the chain operating mechanism (a) that drives the container support fork (5) up and down, and the carrier frame (10) to the leg frame (2). ) A lock mechanism (b) for performing a braking operation of (1), and an electric container carrier. 2. The chain operating mechanism (a) is a chain (31) which is rotated by a gear interlockingly connected to an electric motor (M).
One end of the fork (5) is connected to the upper end of the container supporting fork (5), the other end is connected to the lower end of the fork (5), and a torque limiter (32) is provided between the gear and the electric motor (M). 2. The electric container carrier according to claim 1, further comprising a power interrupting mechanism such as). 3. The locking mechanism (b) is a leg frame.
(2) Lock lever (20) that stands upright at the rear of the
(0) is connected to the base end of the leg frame (2) and is erected in the left-right direction, the link mechanism (d) disposed on the rod (21), and the link mechanism (d). It is equipped with a lock rod (23) which can be moved up and down in a vertical direction by interlocking with the operation of the lock lever (20) via a rear wheel. The electric container carrier according to claim 1 or 2, wherein (4) is configured to float.