KR20130040464A - Side shift apparatus for forklift - Google Patents

Side shift apparatus for forklift Download PDF

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Publication number
KR20130040464A
KR20130040464A KR1020110105249A KR20110105249A KR20130040464A KR 20130040464 A KR20130040464 A KR 20130040464A KR 1020110105249 A KR1020110105249 A KR 1020110105249A KR 20110105249 A KR20110105249 A KR 20110105249A KR 20130040464 A KR20130040464 A KR 20130040464A
Authority
KR
South Korea
Prior art keywords
frame
shift
cylinder
forklift
guide
Prior art date
Application number
KR1020110105249A
Other languages
Korean (ko)
Inventor
이창엽
Original Assignee
이창엽
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이창엽 filed Critical 이창엽
Priority to KR1020110105249A priority Critical patent/KR20130040464A/en
Publication of KR20130040464A publication Critical patent/KR20130040464A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/146—Side shift, i.e. both forks move together sideways relative to fork support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/20—Means for actuating or controlling masts, platforms, or forks

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

The present invention relates to a forklift side shift apparatus that can be easily operated and operated by sufficiently securing the view of a forklift operator by mounting a drive cylinder inside the shift frame, and can prevent safety accidents in advance. A pair of vertical frames capable of lifting up and down along the rails; An upper frame and a lower frame, and a left and right frame, the upper frame having a rear side open and a shift frame having a mounting space formed in a left and right length direction therein; And a driving cylinder positioned in the mounting space inside the upper frame and fixedly mounted to the vertical frame, and configured to move the shift frame to the left or right by applying pressure to the left frame or the right frame.

Description

Side Shift Apparatus For Forklift

The present invention relates to a side shift device for a forklift, and in particular, by mounting a drive cylinder inside the shift frame, the forklift side can not only easily operate and operate by ensuring sufficient visibility of the forklift operator, but also prevent safety accidents in advance. It relates to a shift device.

In general, a forklift is a vehicle used to lift and move a relatively heavy load to a position to be moved. A forklift is provided with a mast rail installed vertically in front of the forklift, and the mast rail simultaneously moves up and down along the mast rail. It is equipped with a pair of configured forks. The heavy cargo is usually placed on the upper surface of the pallet, and a pair of forks of the forklift are inserted into the pair of fitting holes formed in the pallet to lift the cargo.

Representative devices for controlling a pair of forks included in the forklift include a fork positioning device and a side shift device. The fork positioning device has a space between a pair of forks in accordance with a pair of fitting hole gaps formed on a pallet. It is a device for adjusting, the side sheet device is a device for aligning a pair of forks to the left and right to fit the through hole of the pallet without moving the forklift body.

In particular, the side shift device is to finely adjust the left and right without moving the forklift vehicle body to balance the left and right when lifting the heavy cargo with a pallet, so that the forklift can be stably operated, lifting the heavy cargo forklift Even in narrow, curved roads, there is an advantage in that it is possible to easily change the direction of the forklift by adjusting the position of the cargo from side to side.

However, in the conventional side shift device, when various devices such as a driving cylinder for moving the shift frame including a pair of forks to the left and right are installed outside the shift frame to obstruct the operator's view during forklift operation or work. There were many, and accordingly, there was a problem in that safety accidents frequently occurred as well as difficulties in driving or working. As a result, despite the great advantage of the side shift device, it is not configured as a basic device of the forklift, but is reduced to a selection device, so that it is mounted on the forklift only when the forklift buyer wants it.

In addition, the conventional side shift device cannot receive the load of the cargo as it is when the heavy cargo is lifted, and thus cannot move the device from side to side smoothly. Excessive load is transmitted to one side of the driving cylinder, there is a problem that a failure occurs or breaks.

The technical problem to be solved by the present invention, by mounting the drive cylinder exposed to the outside of the forklift side shift device inside the shift frame to ensure a sufficient view of the forklift operator to ensure stable operation and operation and to prevent safety accidents in advance. In providing a forklift side shift device.

In addition, another technical problem to be solved by the present invention is to provide a forklift side shift device capable of smoothly sliding left and right while bearing loads such as cargo and the shift frame even in the state of lifting a heavy cargo.

In addition, another technical problem to be solved by the present invention, even if the load of the heavy lifting to the left and right to move the left and right to share the load applied to one side of the drive cylinder and the shift frame even if the center of gravity is changed It is to provide a side shift device for a forklift.

Side shift device for forklift for solving the above technical problem, a pair of vertical frame capable of lifting up and down along the master rail of the forklift; An upper frame and a lower frame, and a left and right frame, the upper frame having a rear side open and a shift frame having a mounting space formed in a left and right length direction therein; And a driving cylinder positioned in the mounting space inside the upper frame and fixedly mounted to the vertical frame, and configured to move the shift frame to the left or right by applying pressure to the left frame or the right frame.

At this time, the drive cylinder is provided with one or more pressure generating means therein and a cylinder housing fixedly mounted to the vertical frame, and formed on the left side of the cylinder housing extending and contracting in and out of the cylinder housing to the left frame of the shift frame And a first cylinder rod for transmitting pressure and a second cylinder rod formed on the right side of the cylinder housing and extending and contracting in and out of the cylinder housing and transmitting pressure to the right frame of the shift frame.

In addition, the drive cylinder further comprises a circular rod-shaped guide rod formed on the upper surface of the cylinder housing, the upper frame of the shift frame further comprises one or more sliding pads mounted on the upper surface of the interior mounting space The upper surface of the inner space of the upper frame to which the sliding pad is attached to the upper surface of the guide rod is seated so that the whole of the shift frame can be slid left and right so as to be smoothly driven even when the cargo is lifted.

The pressure generating means mounted inside the cylinder housing may be a hydraulic cylinder in which the first cylinder rod and the second cylinder rod are driven by a hydraulic piston, but an electric cylinder operated by a motor may be used. Of course. In addition, the pressure generating means may drive both the first cylinder rod and the second cylinder rod with one device, but preferably it is provided with two devices for driving the first cylinder rod and the second cylinder rod, respectively. good.

On the other hand, the lower frame further includes a guide rail formed in the left and right longitudinal direction on the upper surface, a support plate mounted at a predetermined position of the vertical frame, a guide mounted on the front of the support plate and can be seated on the guide rail Comprising two or more guide blocks that are formed with grooves, the left and right in the lifting state to adjust the left and right loads even when the load is tilted to one side even if the center of gravity is disturbed or the balance of the load is not balanced Through the distributed transmission to the vertical frame to prevent failure or breakage, and even if the load is applied to one side to be able to slide smoothly to move from side to side.

The present invention can be mounted inside the upper frame of the shift frame without exposing the drive cylinder provided in the side shift device to the outside to ensure sufficient visibility of the operator, not only to facilitate the operation and operation of the forklift, but also to obstruct the view. There is an advantage that can significantly reduce safety accidents by preventing the concentration loss caused by.

In addition, the present invention is to mount a guide rod and a sliding pad between the shift frame and the drive cylinder to smoothly slide the sliding pad on the shift frame over the guide rod on the drive cylinder, thereby carrying a heavy load on a pair of forks There is another advantage that the side shift device can be easily moved left and right to be adjusted even in the lifted state.

In addition, the present invention has a guide rail on the lower frame of the shift frame and by mounting a plurality of guide blocks fixedly mounted on the vertical frame on the guide rail, the center of gravity of the heavy cargo lifted by a pair of forks is somewhat one side Even if it moves to, there is another advantage that can prevent the failure and damage of the device by partially transferring the load applied to one side of the drive cylinder and the shift frame to the vertical frame.

1 is a perspective view of a side shift device for a forklift according to an embodiment of the present invention.
2 is a rear view of a side shift device for a forklift according to an embodiment of the present invention.
3 is a perspective view of a driving cylinder according to an embodiment of the present invention.

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

1 is a perspective view of a side shift device for a forklift according to an embodiment of the present invention, Figure 2 is a rear view of the side shift device for a forklift according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention Is a perspective view of a driving cylinder according to the present invention.

1, 2, and 3, the side shift device for a forklift according to an embodiment of the present invention is mounted on the master rail of the forklift vertical frame that can move up and down, the center is open and rectangular shape It comprises a shift frame 100 consisting of a frame, and a drive cylinder 200 is located in the inner space of the upper frame 110 of the shift frame 100 and fixed to the vertical frame.

In this case, the shift frame 100 has a bar-shaped upper frame 110 and the lower frame 120, the left frame 130 and the right frame (bonded to the end of the upper frame 110 and the lower frame 120) 140).

The upper frame 110 of the shift frame 100 is open at the rear, and the mounting space of a predetermined size is formed to the left and the right inwardly, forming a beam shape having a vertical cut surface of the shape of a child.

The driving cylinder 200 is positioned in an internal mounting space of the upper frame 110, and the driving cylinder 200 is fixed and mounted to the vertical frame 10 to move the entire shift frame 100 left and right. It plays a role.

The driving cylinder 200 has a cylinder housing 210 having a pressure generating means therein, and a first cylinder rod formed through the inside and outside of the left side of the cylinder housing 210 to expand or contract by the pressure generating means. And a second cylinder rod 230 formed through the inside and the outside of the right side of the cylinder housing 210 and extending or contracting by the pressure generating means.

At this time, the end portions of the first cylinder rod 220 and the second cylinder rod 230 abut on the left and right wall surfaces of the inner mounting space of the upper frame, respectively, to press the left frame 130 and the right frame 140. Will be delivered. That is, the first cylinder rod 220 extends by the pressure generating means and transfers pressure to the left frame 130 to move the entire shift frame 100 to the left, in which case the second cylinder rod 230 is contracted. In addition, the second cylinder rod 230 extends by the pressure generating means and transmits pressure to the right frame 140 to move the entire shift frame 100 to the right, in this case, the first cylinder. The rod 220 is to contract.

The upper surface of the inner mounting space of the upper frame is in contact with the upper surface of the cylinder housing 210 of the drive cylinder 200, the friction may occur as the shift frame 100 moves to the left and right to prevent the smooth movement. In order to prevent this, a guide rod 240 having a circular rod shape is mounted on an upper surface of the cylinder housing 210, and one or more sliding pads 111 are mounted on an upper surface of the mounting space inside the upper frame. The lower surface of the sliding pad 111 preferably corresponds to the shape of the guide rod 240 to form a curved surface. As such, the driving cylinder 200 and the shift frame 100 are coupled to each other through the guide rod 240 and the sliding pad 111 to reduce the failure or damage by well bearing the load while reducing the frictional force. .

On the other hand, the pressure generating means in the cylinder housing 210 may use a variety of devices, a typical hydraulic cylinder device. The hydraulic cylinder device is a device that transmits pressure by driving a piston by hydraulic pressure, and can generate a relatively large pressure, and is a device used in heavy equipment and the like. In addition to the hydraulic cylinder, an electric cylinder using a motor and a screw, etc. can also be used in the present apparatus. In addition, although only one pressure generating means may be mounted to drive both the first cylinder rod 220 and the second cylinder rod 230, the first cylinder rod 220 and the second cylinder rod 230 may be driven. It would be more desirable to equip two pressure generating means to drive each, as well as to make the device slimmer and to make fine and precise adjustments.

As described above, the shift frame 100 is coupled across the upper surface of the driving cylinder 200. The shift frame 100 is sufficiently endurable when the center of gravity of the load is well fitted, but the center of gravity of the driving cylinder 200 is misaligned. The load may be biased left or right, resulting in failure or breakage.

In order to prevent this, the support plate 20 may be mounted at a predetermined position of the vertical frame 10 corresponding to the lower frame 120 of the shift frame 100, and two or more may protrude to the upper surface of the lower frame 120. The guide block 21 is mounted on the front side of the support plate 20 by using the fastener 22. That is, when the balance of the center of gravity is not balanced and shifts, the force is applied downward to the side where the center of gravity is moved, and the force is applied upward to the opposite side, and the support plate 21 is applied upward to the support plate. Transfer to 20 to distribute the force to prevent the shift frame 100 is inclined, thereby reducing the load on the drive cylinder.

On the other hand, there is a case in which the shift frame 100 is to be moved left and right even when a predetermined size of pressure is transmitted to the guide block 21. In this case, the guide block 21 and the lower frame 120 may be moved. Friction occurs on the upper surface of the to prevent smooth movement. Therefore, the guide rail 121 having a predetermined thickness is formed on the upper surface of the lower frame 120 in a left and right length direction for smoother driving, and the thickness of the guide rail 121 is formed on the lower surface of the guide block 21. Forming a guide groove corresponding to the shift frame 100 including the lower frame 120 to be moved while sliding along the guide block 21. As described above, the guide rail 121 and the guide groove are coupled to each other to prevent the shift frame 100 from going to the front.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. In addition, it is obvious that any person having ordinary skill in the art to which the present invention pertains can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

10 Vertical Frames 20 Support Plate
21 Guide block 22 Fasteners
100 shift frame 110 top frame
111 sliding pad 120 bottom frame
121 Guide rail 130 Left frame
140 right frame
200 driven cylinder 210 cylinder housing
220 1st cylinder rod 230 2nd cylinder rod
240 guide rod

Claims (5)

A pair of vertical frames capable of moving up and down along the master rail of the forklift;
An upper frame and a lower frame, and a left and right frame, the upper frame having a rear side open and a shift frame having a mounting space formed in a left and right length direction therein; And
Located in the mounting space inside the upper frame fixedly mounted to the vertical frame, forklift side shift comprising a drive cylinder for moving the shift frame to the left or right by applying pressure to the left frame or the right frame Device. The method of claim 1,
The drive cylinder has one or more pressure generating means therein and a cylinder housing fixedly mounted to the vertical frame; And a second cylinder rod formed on the right side of the cylinder housing and extending and contracting to transfer pressure to the right frame of the shift frame. The method of claim 2,
The driving cylinder further includes a guide rod having a circular rod shape formed on an upper surface of the cylinder housing, and the upper frame of the shift frame further includes one or more sliding pads mounted on an upper surface of an internal mounting space.
An upper surface of the inner space of the upper frame to which the sliding pad is attached to the upper surface of the guide rod slides left and right, and the shift frame moves. The method of claim 2,
The pressure generating means is a side cylinder shift device for forklift, characterized in that the hydraulic cylinder. 5. The method according to any one of claims 1 to 4,
The lower frame further includes a guide rail formed in the left and right longitudinal direction on the upper surface,
And a support plate mounted at a predetermined position of the vertical frame, and at least two guide blocks mounted on a front surface of the support plate and formed with guide grooves that can be seated on the guide rails. Side shift device for.
KR1020110105249A 2011-10-14 2011-10-14 Side shift apparatus for forklift KR20130040464A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110105249A KR20130040464A (en) 2011-10-14 2011-10-14 Side shift apparatus for forklift

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110105249A KR20130040464A (en) 2011-10-14 2011-10-14 Side shift apparatus for forklift

Publications (1)

Publication Number Publication Date
KR20130040464A true KR20130040464A (en) 2013-04-24

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Application Number Title Priority Date Filing Date
KR1020110105249A KR20130040464A (en) 2011-10-14 2011-10-14 Side shift apparatus for forklift

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102221866B1 (en) * 2020-07-09 2021-03-03 김광현 Forklift truck
KR20210091946A (en) * 2020-01-15 2021-07-23 김관락 Fork Movement Apparatus for Forklift Truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210091946A (en) * 2020-01-15 2021-07-23 김관락 Fork Movement Apparatus for Forklift Truck
KR102221866B1 (en) * 2020-07-09 2021-03-03 김광현 Forklift truck

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