JP2015155289A - Method for manual traveling for simple carriage for high place work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for allowing a forward movement of a carriage made manually by an operator on the carriage by using the carriage that can, instead of a stepladder, provide a place work position as high as a stepladder provides.

SOLUTION: A method allows a forward movement of a carriage made by an operator on the carriage by using a lever with a fulcrum in the center provided between the operator in a high place work position and the ground. The carriage is configured to respond when the operator swings the lever forward and backward in the carriage traveling direction and to move forward to a point at the other end of the lever in contact with the ground by the principle of a lever while a reverse rotation prevention mechanism is provided by using a one-way clutch to wheels on the rear side in the traveling direction so as not to move back.

COPYRIGHT: (C)2015,JPO&INPIT

Description

The present invention relates to a method of using a cart instead of a stepladder for work requiring a stepladder, etc., and enabling the cart to move forward by human power while riding on the cart.

Conventionally, a stepladder has been used as a simple tool for work at a high place, which is not possible with human height.

JP-A-2005-341946 JP2010-247932A 5-29308

In the work using the stepladder, when the work range is wide, it is necessary to move the stepladder to the work position, and each time the worker needs to carry the stepladder and move up and down to the stepladder.
Moreover, when the position of the stepladder after movement is not appropriate, the above operation is required again.
From the above, in the case of work with a stepladder, much time and labor are required.
There was also a risk of falling.

In view of the above, an object of the present invention is to provide a method that allows a cart to be moved forward manually by using a cart that can obtain an altitude work position similar to that of a stepladder instead of using a stepladder. .

The carriage moving means according to the present invention uses a lever as means for obtaining the propulsion force of the carriage with respect to the ground because of the human power by the operator on the carriage away from the ground.
When the lever is operated by the operator, the lever principle acts on the human power of the operator, and the carriage has a structure in which the carriage moves forward and forward in a direction in contact with the ground at the other end of the lever.

When the operator operates the lever, there is a structure that allows only a counterclockwise rotation of the lever body with respect to the lever body so that the lever can be returned after the carriage has completed moving forward And both have a structure which maintains a positional relationship with a tension spring.

The cart according to the present invention has wheels that roll on the ground at four locations, front, rear, left, and right, and the left and right wheels at the rear of the cart travel in the cart forward direction only by a one-way clutch.

When the carriage is responsive forward, the lever has a structure that can be rotated horizontally to change the direction, with the grounding point at the two left and right widths of the carriage as the ground and the stability of the driving force and posture. It is characterized by.

Since the work platform for aerial work having the moving means according to the present invention can always work while riding, unlike the case of a stepladder, it is not necessary to move up and down and carry the stepladder.
For this reason, the work efficiency can be improved and the physical burden can be reduced.

When moving the work position with a working platform for high places with a moving means according to the present invention, it is not a point movement unlike a stepladder, it is a continuous movement for riding at all times, so it can be easily moved to the right position for work .

Since the moving means according to the present invention depends on human power, the structure is simple, the economic burden is small, and the handling is easy.

The working cart for high places with the moving means according to the present invention is simple because it depends on human power, but there is no danger of falling like a stepladder, and there is no power, so there is no unexpected movement, so it is safe. It is.

It is a side view of an aerial work cart having moving means according to the present invention. It is a top view of an aerial work cart. (A)-(e) is the side view which showed each movement operation | movement of the aerial work cart.

Embodiment 1 of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall view of a carriage 1 having moving means according to the present invention. The carriage 1 has a main structure including a frame 2 provided with wheels 3 that roll on the ground R in front, rear, left, and right, a pedestal portion 5 placed on the frame 2, an operation lever 9, and the like.
The worker M rides on the top plate 6 placed on the gantry 5.

As shown in FIGS. 1 and 2, the operation lever 9, which is one of the features of the moving means according to the present invention, is located at the center of the gantry 5, and the support frame 5 b is extended in the forward direction of the carriage 1. Provided at the end.
The operating lever 9 is hinged to the left and right ends of the fixing member 8 by means of trillions 11 via a thrust bearing 7 so as to be rotatable in the horizontal direction.

As shown in FIG. 1, the operation lever 9 has a structure including a grip 9a, an upper lever 9b, 9c hinged to the lower end of the upper lever 9b by a trough 12, and a rubber foot 10 at the lower end of the lower lever 9c. . The fixing member 8 is hinged by a trillion 11 at the center of the upper lever 9b. The positional relationship between the upper lever 9 b and the lower lever 9 c is maintained by the tension spring 13.

The operation of the forward movement method of the carriage 1 according to the present invention will be described with reference to FIGS.
FIG. 3A shows an initial stop state, and the operation lever 9 is on the worker M side. FIG. 3B shows the worker M holding the holding portion 9a of the operation lever 9 and pushing it in the direction of the arrow A so that the operation lever 9 is in a state perpendicular to the ground R. During this time, the operating lever 9 moves the cart 1 forward in the direction of the rubber foot 10 in contact with the ground R of the operating lever 9 according to the lever principle with the trillion 11 as a fulcrum. At this time, the front wheel 3a of the carriage 1 floats from the ground R.

FIG. 3C shows a state where the worker M grips the grip portion 9a of the operation lever 9 and further pushes it in the direction of the arrow A. Immediately after the operating lever 9 shown in FIG. 3 (b) has passed the position perpendicular to the ground R, the lower lever 9c is hinged to the upper lever 9b so as to be rotatable counterclockwise by a trillion number 12. Therefore, the operation lever 9 bends at the trillion number 12 due to the loads of the worker M and the carriage 1 and the like. At this time, the carriage 1 stops and lands on the front wheel 3a ground R of the carriage 1.

FIG. 3D shows a process in which the worker M grips the grip portion 9a of the operation lever 9 and pulls it back in the direction of the arrow B, that is, the worker M side.
During this time, since the rubber foot 10 provided at the lower end of the lower lever 9c slides on the ground R, the operation lever 9 is kept bent at the trillion number 12.

As shown in FIG. 3 (e), the worker M grips the grip portion 9a of the operation lever 9, and further pulls it back in the direction of arrow B in FIG. 3 (d), whereby the rubber foot 10 at the lower end of the lower lever 9c. Is free from interference with the ground R away from the ground. At this time, the lower lever 9 c is returned to the original position with respect to the upper lever 9 b by the tension spring 13.

The operator M can move the carriage 1 forward while riding on the carriage 1 by performing the above operation on the operation lever 9.
During this time, since the rear wheel 3b of the carriage 1 can only be rotated forward by the one-way clutch 4, the carriage 1 does not move backward.

As shown in FIG. 2, the operation lever 9 is structured to be rotatable in the horizontal direction with respect to the carriage 1 by the thrust bearing 7. For this reason, the operator M can move the carriage 1 forward in the target direction by operating the operation lever 9 in the traveling direction while riding on the carriage 1.

1 Cart 2 Frame 3 Wheel 4 One-way clutch 5 Mounting unit 6 Top plate 7 Thrust bearing 8 Fixing member 9 Operation lever 10 Rubber foot 11 Trillion 12 Trillion 13 Tension spring M Worker R Ground

Claims (4)

A cart that uses a lever in which the operator who rides on the cart away from the ground operates the lever by human power, the lever principle acts on the human power of the worker, and the cart moves forward in the direction in contact with the ground at the other end of the lever How to move. When an operator operates the lever, a part of the lever body is configured to perform only counterclockwise rotation with respect to the lever body, including the portion of the lever that contacts the ground in order to enable the return of the lever after the carriage is moved forward. In addition, a structure in which both maintain the positional relationship by a tension spring. The lever according to claim 1 can be rotated in the horizontal direction so as to be able to change the direction when the carriage is forwardly responsive to the grounding point at the two left and right widths of the carriage for stability of driving force and posture. Construction. A cart according to the present invention has wheels that roll on the ground at four locations, front, rear, left, and right, and a rear side wheel with a one-way clutch to prevent reverse movement with respect to the traveling direction of the cart.

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