KR890005739Y1 - Mast structure for fork lift - Google Patents

Abstract

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Description

Mast coupling structure for forklift

1 is a mast rear perspective view showing the configuration of the subject innovation.

2 is an excerpt of the main part of the present invention.

3 is an operating state diagram of FIG.

4 is a front view of the stopper device is configured according to the present invention.

5 is a rear view of a state of coupling of the conventional mast.

* Explanation of symbols for main parts of the drawings

100: outer mast 101: support plate

102 cylinder 103 pulley bearing

104: pin 110: stopper

111 buffer member 112 locking hole

113: guide bar 114: support plate

108: locking projection 200: the inner mast

201: support plate 202: lifting plate

203: guide bar 204: bearing

205: carriage 206: stopping plate

207: fork 208: obstacle

The present invention relates to a coupling structure of an inner and an outer mast installed at the front of a forklift truck to raise and lower a carriage equipped with a hydraulic cylinder and a forklift fork as an interlocking device, and to improve and maintain a coupling structure of an inner and an outer mast. It is provided for the purpose of greatly improving workability and maintainability by allowing the bearing installed under the inner mast to be easily separated during operation.

As shown in FIG. 5, a mast coupling structure of a conventional forklift truck includes an outer mast 100 mounted with a cylinder 102 and an inner mast 200 mounted with a fork and a carriage and an outer bearing. It is coupled to the upper end of the cylinder rod and connected, and is installed so as to slide up and down while the bearing is engaged.

In addition, the lifting plate 202 of the upper portion of the inner mast rear surface is in contact with the upper end of the cylinder rod, and the chain is connected to the carriage by passing through the upper pulley bearing 103 from one side bracket of the cylinder, The lifting plate 202 of the inner mast is pushed up by the upper end thereof, and the carriage 205 on which the forks 207 are placed is lifted by the chain 107.

For example, such a forklift may raise only the forks 207 without raising the inner mast when the ceiling is low in a variety of working environments, that is, when the ceiling is low enough to not raise the inner mast or the passing height is extremely limited. As the free lift height is required, the guide bar 203 protruding downward from the support plate 201 fixed to the inner mast 200 as shown in FIG. 5 is a lifting plate 202 of the upper end of the cylinder rod. The through coupling is installed, and the locking jaw 108 and the locking projection 208 are formed at one side of the lower side of the outer mast 100 and the lower side of the inner mast 200, so that the inner mast is locked at the maximumly lowered position. When stopped by the jaw 108 and the projection 208, since the free lifting height of the distance between the lifting plate 202 and the support plate 201 is formed, the work has been performed even in a work environment where the height is limited. , In the case of repairing the bearings installed on the lower side of the inner mast surface, such as regular inspection or simple inspection of the train, in particular, as shown in FIG. 5, when the inner mast reaches the bottom dead center, the locking projection 208 is the outer side. Since it is caught by the catching jaw 10 of the mast and cannot be lowered lower than the outer mast, the cylinder can be separated by disassembling the cylinder from the outer mast after disassembling. Even with minor inspections, the tremendous task of removing all the inner and outer masts is not only difficult to separate, but also enormously cumbersome, requiring extra equipment and tools for disassembly, and extra work required. There was a problem that the deterioration.

Therefore, the present invention is to solve the conventional problems, by improving the stopper structure of the lower portion of the forklift mast to form the inner mast to protrude downward than the outer mast, if necessary, provided to be easy to check and repair, When described in detail based on the accompanying drawings as follows.

An inner mast 200 in which a bearing 204 and a fork mounting carriage 205 on an inner side and a support plate 201 having a guide bar 203 are fixed to an upper side of the lower side and a lifting plate 202 and a cylinder having a pulley bearing 103 fixed to each other in which the outer mast 100 is fixedly coupled to each other, is provided between the rear lower portion of the outer mast 100 as shown in FIG. The height variable adjustment support plate 101 is fixedly installed, and a locking plate 206 for controlling the lowering in contact with the stopper 110 on the support plate 101 is installed on the lower rear portion of the inner mast 200. .

In addition, the stopper 100 installed between the support plates 101 includes a support plate 114 for contacting the bottom of the engaging plate 206 at the upper portion and a plurality of locking holes 112 for fixing the lower portion as shown in FIG. 4. ) Is composed of a pair of guide bars 113 arranged at regular intervals, and installed as a guide bar 113 through the center portion of the support plate 101 up and down, and then penetrates forward and backward of the support plate 101. The rising position of the stopper 110 is fixed by engaging the pin 104 with the locking hole 112.

Further, it is more effective to attach the shock absorbing member 111 such as rubber on the support plate 114 of the stopper 110 to absorb shock and generate noise when it comes into contact with the stopping plate 206 which is lowered.

2 and 3, in order to control the lowering of the inner mast 200 to be lowered by its own weight, in the center of the height-variable support plate 101 installed in the lower portion of the rear side of the outer mast 100 The guide bar 113 installed up and down is raised to the contact portion of the bottom surface of the locking plate 206, and the pin 104 is inserted through the support plate 101 to be engaged with the locking hole 112 to the rear of the support plate 101. When the stopper 110 is adjusted to the working position (b) while the inner mast 200 and the catching plate 206 are controlled, the locking hole 112 and the support plate ( When the pin 104 is inserted into the 101 to maintain the height and the locking is released, the inner mast 200 is vertically fixed to the support plate 101 installed and fixed to the lower lower portion of the outer mast 100 by its own weight. Insertion stopper (110) At the same time as the locking plate 206 is placed on the upper side of the shock absorbing member 111 for negative impact and noise absorption (see FIG. 3), the bearing 204 is installed outside the lower end of the inner mast 200. This exposure can easily be inspected as needed by the simple disassembly required by the present invention, the present invention can expose the bearings by such a simple operation to solve the conventional problems, which is necessary to disassemble It is a very useful design that can reduce the waste of equipment and manpower, shorten the working time, and have a considerable effect on preventing accidents.

Claims (1)

Bearing 24 for the lower side of the outer side and the inner side of the support plate 201 is provided with a guide bar 203 on the inner side and the rear of the guide plate 203 is fixed, and the lifting plate 202 on the rod plate At least one having a support plate 114 on the upper side and a plurality of pin-locking locking holes 112 on the lower side in the conventional installation in which the outer mast 100 having the cylinder 102 having the 103 fixed thereto is coupled thereto. The support plate 101 having the height variable adjustment stopper 110 formed of the above guide bar 113 in the center portion is fixed to the rear lower portion of the outer mast 100 and is installed on the rear lower portion of the inner mast 200. Mast coupling structure for forklift, characterized in that the stopper plate (206) to be in contact with the stopper 110 is installed in a transverse fixed.