KR19990048652A - Forklift fork height measuring device - Google Patents

Abstract

Disclosed is a forklift fork height measuring device that can be easily mounted by inserting and fixing between an outer mast and an inner mast without changing the frame of the vehicle, and the steel wire is wound around the center circumference to expand and contract the steel wire. Rotation according to, the drum having a leaf spring therein and restored to its original state by the elastic restoring force; A drum fixing plate supporting the drum and fixed to an outer mast, and having a through hole formed in a predetermined portion thereof, through which a shaft of the drum penetrates; A potentiometer fixed to an end portion of the drum shaft passing through the drum fixing plate and generating an electrical signal proportional to the height of the fork according to its rotation; An enclosure enclosing and protecting the drum and the potentiometer; And the drum is fixed to the inner mast and contracted and expanded according to the movement of the inner mast, and the steel wire wound on the drum penetrates the inside and fixed to the end thereof so that the drum is contracted and expanded integrally. It includes a guide rod that rotates, thereby the forklift fork height measuring apparatus of the present invention fork to perform a more accurate and convenient operation in the place where the exact height of the work, such as a large logistics warehouse is repeatedly performed during the unloading operation of the machine In addition to the accurate automatic measurement of the height of the, this device can be automatically unloading work to a certain height can significantly improve the work efficiency and ensure the work stability.

Description

Forklift fork height measuring device

The present invention relates to an apparatus capable of automatically and accurately measuring the height of a fork so that an accurate and more convenient operation can be performed in a place where a precise height of a work such as a large logistics warehouse is repeatedly performed during an unloading operation of a gigging vehicle. The present invention relates to a forklift fork height measuring device that can be easily mounted by inserting and fixing between the outer mast and the inner mast without changing the frame.

In general, forklift trucks are mainly used for unloading. This forklift is a lifting operation in which most of the work performed is lifting and unloading. The most important thing in the lifting work is to unload the goods at the correct height. To do this, measuring the correct lifting height must be preceded. However, in Korea, it is very difficult to expect accurate lifting work because there is no device to measure the height during lifting work. In particular, there are many repetitive tasks of raising and lowering a certain height in places such as large logistics warehouses, but each time the worker works with the eyes, the work efficiency decreases, and the product falls down due to a minor mistake due to the height measurement error. Often, loss of life and accidents occur.

On the other hand, in the case of foreign countries, it is becoming common to measure the height of the lift and to perform accurate lifting work. The lift height measuring device used in the double Toyota forklift is fixed between the inner mast and the outer mast, and another sheave is attached to the bottom of the rotating sheave to connect two sheaves with a timing belt. Then, by installing a photosensor at a portion corresponding to the slot mounted on the lower sheave, the light source is passed through the slot to count the number of slots measured by the photosensor when lifting to measure the height. However, in order to mount such a measuring device on a shipped forklift, there is a disadvantage in that a space for mounting a photo sensor is required between the inner mast and the outer mast. Therefore, when the space is narrow, a problem arises that the frame must be deformed, and mounting is cumbersome. In addition, since the photosensor is expensive, there is a discontinuity that requires a lot of expenses in the commercialization and mass production.

Therefore, the object of the present invention is to devise to solve the above-mentioned drawbacks, and it is more convenient to automatically measure the height of the forklift fork by simply inserting and mounting without changing the frame between the outer mast and the inner mast. It provides a forklift fork height measuring device that can be easily installed and used.

1 is a block diagram showing a forklift fork height measuring apparatus according to the present invention.

* Code descriptions for the main parts of the drawings

10: drum fixing plate 11: through hole

20: drum 21: axis

22: steel wire 23: leaf spring

30: guide rod 31: connecting ring

40: potentiometer 50: molding

60: enclosure

The forklift fork height measuring apparatus according to the present invention for achieving the above object is a forklift having an inner mast and an outer mast for fixing the fork for loading goods up and down and tiltable, the steel wire in the outer peripheral center Is wound is rotated in accordance with the expansion and contraction of the steel wire, the drum is provided with a leaf spring therein and restored to its original state by the elastic restoring force; A drum fixing plate supporting the drum and fixed to the outer mast, and having a through hole formed in a predetermined portion thereof, through which a shaft of the drum penetrates; A potentiometer fixed to an end portion of the drum shaft passing through the drum fixing plate and generating an electrical signal proportional to the height of the fork according to its rotation; An enclosure enclosing and protecting the drum and the potentiometer; And the drum is fixed to the inner mast and contracted and expanded in accordance with the movement of the inner mast, and the steel wire wound on the drum penetrates inside and fixed to the end thereof so that the drum expands and contracts integrally. It includes a guide rod for rotating.

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

1 is a configuration diagram showing a forklift fork height measuring apparatus according to the present invention.

As shown, the through hole 11 is formed in the drum fixing flat plate 10 to penetrate the shaft 21 of the drum 20. The drum 20 has a steel wire 22 wound around the center circumference, and the open end of the steel wire 22 is discharged to the outside. The end of the withdrawn steel wire 22 is fixed to the inner side of the connecting ring 31 provided at the end of the guide rod 30 through the guide rod 30. The guide rod 30 is capable of contraction / expansion by inserting rods having different diameters such as antennas. Therefore, when the guide rod 30 is expanded, the steel wire 22 is released from the drum 20. On the contrary, when the guide rod 30 is contracted, the steel wire 22 is wound around the drum 20. To this end, the drum 20 has a leaf spring 23 installed therein and is elastic at the time of loosening of the wire, and the steel wire 22 can be wound by elastic restoring force.

On the other hand, the potentiometer 40 is fixed to the edge part of the drum shaft 21 which penetrated the through-hole 11 of the drum fixing flat plate 10. As shown in FIG. The potentiometer 40 measures the height of the forklift fork and converts it into an electrical signal, and the case 60 encloses the drum 20 and the potentiometer 40 by the molding 50 and stores the enclosure 60. It is fixed at.

Hereinafter, the operation of the present invention will be described in detail.

The device is fixed to the drum fixing plate 10 to the outer mast (not shown), and fixed to the inner ring (not shown) of the connecting ring 31 of the guide rod 30 is installed in the forklift. When the inner mast is moved, the measuring device installed as described above contracts or expands the guide rod 30 connected thereto. Accordingly, the steel wire 22 integrated with the guide rod 30 also contracts and expands to rotate the drum 20. Let's go. When the shaft 21, which penetrates the drum fixing plate 10 together with the drum 20, rotates, the potentiometer 40 rotates to change the resistance value. Therefore, the potentiometer 40 is proportional to the resistance value. An electrical signal is generated to detect the lifting height.

As described above, the forklift fork height measuring device of the present invention can be easily installed and used by automatically measuring the height of the forklift fork by simply mounting it without changing the frame by fixing it between the outer mast and the inner mast. There is an advantage. In particular, more precise and convenient work can be carried out where the work of the exact height such as large logistics warehouse is repeatedly performed during the unloading operation of the gigge. Therefore, the application of this apparatus enables automatic loading and unloading to a certain height, thereby significantly improving work efficiency and securing work stability.

Claims (3)

In a forklift truck having an inner mast and an outer mast for fixing a fork for loading goods up and down and tiltable, A steel wire wound around the center outer periphery to rotate in accordance with the contraction and expansion of the steel wire, the drum having a leaf spring therein and being restored to its original state by an elastic restoring force; A drum fixing plate supporting the drum and fixed to the outer mast, and having a through hole formed in a predetermined portion thereof, through which a shaft of the drum penetrates; A potentiometer fixed to an end portion of the drum shaft passing through the drum fixing plate and generating an electrical signal proportional to the height of the fork according to its rotation; An enclosure enclosing and protecting the drum and the potentiometer; And The drum is mounted in the enclosure and fixed to the inner mast to contract and expand according to the movement of the inner mast, and the steel wire wound around the drum penetrates inside and is fixed to an end thereof so that the drum is integrally contracted and expanded. Forklift fork height measuring device comprising a guide rod for rotating. The forklift fork height measuring apparatus according to claim 1, wherein the potentiometer is fixed to the case by molding the enclosure. The forklift height measuring apparatus according to claim 1, further comprising a connecting ring at the end of the guide rod for fixing to the inner mast.