KR20090013401A - Fork supporting device - Google Patents

Fork supporting device Download PDF

Info

Publication number
KR20090013401A
KR20090013401A KR1020070077475A KR20070077475A KR20090013401A KR 20090013401 A KR20090013401 A KR 20090013401A KR 1020070077475 A KR1020070077475 A KR 1020070077475A KR 20070077475 A KR20070077475 A KR 20070077475A KR 20090013401 A KR20090013401 A KR 20090013401A
Authority
KR
South Korea
Prior art keywords
fork
folded
forklift
drive shaft
coupled
Prior art date
Application number
KR1020070077475A
Other languages
Korean (ko)
Inventor
김성규
Original Assignee
에스엠메탈(주)
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 에스엠메탈(주) filed Critical 에스엠메탈(주)
Priority to KR1020070077475A priority Critical patent/KR20090013401A/en
Publication of KR20090013401A publication Critical patent/KR20090013401A/en

Links

Images

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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
    • 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
    • B66F9/142—Movements of forks either individually or relative to each other
    • B66F9/143—Movements of forks relative to each other - symmetric
    • 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
    • B66F9/16—Platforms; Forks; Other load supporting or gripping members inclinable relative to mast

Landscapes

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

Abstract

A fork supporting device of a foldable fork lift truck is provided to improve durability of parts and prevent abrasion of binding parts of the fork by controlling a shake of the fork. A fork supporting device of a foldable fork lift truck comprises the followings: a master rail(100); a supporting pole(102) installed on both sides of a reinforcement frame and a reinforcement frame of a n type; an operating unit folding the fork by rotating a driving shaft(2); a right and left operating unit controlling an interval of the fork.

Description

Fork supporting device of forklift with folding fork

The present invention relates to a fork safety mounting device of the forklift folding the fork, more specifically 'b' is mounted on the horizontal end of the fork on both sides of the 'c' shaped reinforcement frame coupled to the upper portion of the master rail 'b' The fork safety forklift device of the forklift truck for which the fork is folded so as to minimize the fork shaking when driving is carried when the fork horizontal rod end is mounted on the mounting rod when the fork is folded by combining the shape of the forklift. will be.

In general, forklift trucks are used to lift or lower loads and transport them to the desired position.

The forklift is provided with a mast rail in front of the vehicle body, the carriage is assembled with the carriage up and down along the mast rail, the carriage is coupled to a pair of forks to support the load.

Recently, a forklift with a so-called foldable fork that allows the fork to fold to improve safety when the forklift is driving on the road has been proposed, and the fork that folds the fork can be folded while adjusting the fork spacing. Fork drive is applied.

However, in the conventional fork driving device, the fork is driven in a folded state in the vertical direction, and when the fork is slightly shaken while driving, noise is also generated, and as the end of the fork flows, the coupling force of the coupling part is easily weakened. There was a problem that the durability is weakened.

The present invention for solving the above problems

By rotatably coupling a drive shaft having a polygonal cross section in the transverse direction to the middle portion of the carriage coupled to the master rail installed in the front of the forklift, by inserting the coupling formed on the upper portion of the fork to the drive shaft, by rotating the drive shaft forward and backward In the fork driving device of the forklift including a vertical drive means for operating the fork folded and the left and right driving means for driving the fork in the left and right direction to adjust the distance of the fork,

It characterized in that the mounting rod is mounted to the horizontal end of the fork folded to the upper side on both sides of the 'c'-shaped reinforcement frame coupled to the top of the master rail.

According to the present invention, when the fork is folded, the horizontal end of the fork travels in a state where it is mounted on the mounting rod, so that the fork shaking can be minimized while driving to prevent wear of the fork coupling part while improving durability of the overall product. The effect of providing a fork safety mount for a forklift truck with one fork folded can be expected.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, FIGS. 1 to 6.

The front of the forklift is provided with a master rail 100 for raising or lowering the carriage 1 in the vertical direction, the upper portion of the master rail 100 is coupled to the reinforcement frame 101 formed in the 'c' shape It is configured to improve the installation stability for the master rail (100).

In the present invention, the horizontal end of the fork (5) when the fork (5) to be folded back by combining the 'b' shaped mounting rod (102) by welding or bolt to both sides of the reinforcement frame 101 is folded To be mounted on the mounting rod (102).

Intermediate bar 3 is installed at the upper end of the carrier 1 in the transverse direction, and the intermediate cross bar 4a and the crossbar 4 for supporting the lower end of the fork 5 are at the lower end of the carrier 1 in the transverse direction. Is installed.

In addition, the vertical plate 8 is formed to be spaced a predetermined distance into the side plate of the carrier (1).

In the middle of the carrier 1, a drive shaft 2 having a polygonal cross section, for example, a square, trapezoidal or rectangular cross-sectional structure is etched, and on both sides of the carrier 1, a separation prevention portion ( 9) is coupled to both ends of the drive shaft (2).

Two forks 5 are fitted to the drive shaft 2 to lift a load. The upper portion of the fork 5 includes a coupling part 6 having a coupling hole having the same cross-sectional shape as the drive shaft 2. Formed.

On the other hand, the connecting rod 10 is formed by connecting the connecting piece 10a protruding from both ends of the drive shaft (2), the operating rod that emerges by hydraulic pressure between the side of the carriage (1) and the vertical plate (8) 12 is installed in the vertical direction, the upper and lower cylinders 11 coupled to the connecting portion 10, the side of the carriage 1 and the upper end of the vertical plate 8, the latching rod 13 in the transverse direction And fitted to the upper end of the upper and lower cylinder 11 to the engaging rod (13).

The connecting portion 10 may be integrally formed to protrude from the drive shaft 2.

Accordingly, when the operating rod 12 is advanced by the hydraulic pressure supplied to the upper and lower cylinders 11, the fork 5 is rotated upward while being folded upward while the drive shaft 2 into which the connection portion 10 is fitted is rotated upward.

The left cylinder 20 and the right cylinder 22 are spaced apart from each other so as to be positioned directly above the drive shaft 2 between the vertical plates 8 as a means for adjusting the installation interval of the fork 5. Install them in order to face each other.

That is, one end of the left cylinder 20 is fixed to the inner surface of the left vertical plate 8, the operating rod 21 of the left cylinder 20 toward the fork 5 on the right side, the right cylinder 22 One end of is fixed to the inner surface of the right vertical plate 8, the operating rod 23 of the right cylinder 22 is installed to face the fork (5) on the left.

In the present invention, the fork 5 is moved forward and backward along the left or right cylinder body located at the upper side or the lower side at the end of the operating rods 21 and 23 of the left and right cylinders 20 and 22, respectively. Coupling the first and second connecting members 30, 40 to operate in the direction.

The first connecting member 30 is coupled to the end of the operating rod 21 of the left cylinder 20, the right side of the cylinder 22, the first connecting portion 31, the drive bearing 32 is coupled therein Fit and wrap to wrap the body of the first protrusion, the downward projection of the key projection 33 for connecting to the coupling portion 6 of the fork (5) to the lower side of the body 31, the key projection 33 In the middle portion of the) is formed by forming a coupling hole (34) to which the operating rod 21 of the left cylinder 20 is fitted.

The second connecting member 40 is coupled to the end of the operating rod 23 of the right cylinder 22, the left side of the cylinder 20, the second connecting portion 41 is coupled to the drive bearing 42 therein Fit and wrap to wrap the body of the second connecting body 41 while projecting downwardly projecting the key projection 45 to be connected to the coupling portion 6 of the fork 5 to the lower side of the second connecting body (41) It is configured to protrude to form a coupling protrusion 43 is provided with a coupling hole 44 is fitted to the operating rod 23 of the right cylinder 22 to the upper side of).

In addition, in the central portion of the coupling portion 6 of the fork 5, the key groove 7 allows the fork 5 to rotate in the vertical direction even when the key protrusions 33 and 45 are fitted. It is preferable to form it from the top of 6) to the front surface.

Accordingly, when the hydraulic pressure is supplied to the left and right cylinders 20 and 22 by the switch operation not shown in the driver's seat, and the operating rods 21 and 23 move forward and backward, the operating rods 21 and ( Since the key protrusions 33 and 45 of the first and second connecting members 30 and 40 coupled to the ends of the 23 are fitted into the key grooves 7 of the fork 5, the operating rod 21 ( In conjunction with the forward and backward of the 23) is the fork (5) is to move in the left and right directions.

Since the first and second connecting members 30 and 40 move forward and backward along the bodies of the left and right cylinders 20 and 22 when the operating rods 21 and 23 move forward and backward. End shake of the operating rods 21 and 23 is reduced, as well as more stable driving of the fork 5 in the left and right directions.

Referring to the operation of mounting the fork 5 to the mounting rod 102 by the present invention configured as described above are as follows.

First, the driver operates the left and right driving means so that the fork 5 is opened at the maximum interval, and then the up and down driving means is operated so that the fork 5 is rotated upward and the horizontal end of the fork 5 is more than the mounting rod 102. Make it more lean.

When the fork 5 is opened at the maximum interval, the fork 5 is wider than the forming interval of the mounting rod 102, so that the horizontal end of the fork 5 is mounted when the fork 5 is rotated upward. The rod 102 is not caught.

As described above, by operating the left and right driving means in the folded state by rotating the fork 5 upward, the installation interval of the fork 5 is narrowed so that the pair of forks 5 closely adhere to both side surfaces of the reinforcing frame 101. Then, the vertical end of the fork 5 is rotated downward until the horizontal end of the fork 5 touches the mounting rod 102 again by operating the vertical driving means again, so that the horizontal end of the fork 5 is secured to the mounting rod 102. It is mounted.

As such, when the forklift runs while the horizontal end of the fork 5 is mounted on the mounting rod 102, the end of the fork 5 is not shaken and noise is reduced. This is maintained to have the effect of improving the overall durability.

On the other hand, Figure 4 shows another embodiment of the present invention, is coupled to the mounting rod (102a) on both sides of the upper end of the master rail (100).

Even if the mounting rod (102a) is coupled to both sides of the upper end of the master rail 100 can implement the same fork (5) mounting effect of the present invention, the detailed operation is the same as the present invention, so a detailed description thereof will be omitted.

1 is a perspective view showing a fork safety mounting device of the present invention.

Figure 2 is a front view showing the fork safety mounting device of the present invention.

Figure 3 is a side view showing a fork safety mounting device of the present invention.

Figure 4 is a side view showing another embodiment of the present invention.

5 is a view showing a coupling state of the first connection member applied to the present invention.

Figure 6 is a view showing a coupling state of the second connection member applied to the present invention.

7 is an operating state diagram showing an operating state of the cylinder of the present invention.

Explanation of symbols for main parts of the drawings

1: carriage, 2: drive shaft,

3: middle bar, 4: crossbar,

5: fork, 6: coupling,

7: keyway, 8: vertical plate,

10: connection, 11: upper and lower cylinder,

12: working rod, 13: hanging rod,

15: support, 16: bearing coupling,

20: left cylinder, 22: right cylinder,

30: first connecting member, 31: first connecting body,

32: drive bearing, 33: key protrusion,

34: coupling hole, 40: the second connecting member,

41; Second connecting body, 43: coupling protrusion,

45: key protrusion, 100: master rail,

101: reinforcing frame, 102: mounting rod,

Claims (3)

Fork safety fork folding device of the fork is folded forklift, characterized in that the mounting rod is mounted to the horizontal end of the fork folded to the upper side on both sides of the 'c'-shaped reinforcement frame coupled to the top of the master rail. By rotatably coupling a drive shaft having a polygonal cross section in the transverse direction to the middle portion of the carriage coupled to the master rail installed in the front of the forklift, by inserting the coupling formed on the upper portion of the fork to the drive shaft, by rotating the drive shaft forward and backward In the forklift truck comprising a vertical drive means for operating the fork to be folded and the left and right drive means for driving the fork in the left and right direction to adjust the distance of the fork, Fork safety fork folding device of the fork is folded forklift, characterized in that the mounting rod is mounted to the horizontal end of the fork folded to the upper side on both sides of the 'c'-shaped reinforcement frame coupled to the top of the master rail. By rotatably coupling a drive shaft having a polygonal cross section in the transverse direction to the middle portion of the carriage coupled to the master rail installed in the front of the forklift, by inserting the coupling formed on the upper portion of the fork to the drive shaft, by rotating the drive shaft forward and backward In the forklift truck comprising a vertical drive means for operating the fork to be folded and the left and right drive means for driving the fork to the left and right to adjust the distance of the fork, Fork safety forklift device of the fork folded forklift, characterized in that coupled to the mounting rod is mounted on the upper end of the master rail horizontal portion of the fork folded upward.
KR1020070077475A 2007-08-01 2007-08-01 Fork supporting device KR20090013401A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070077475A KR20090013401A (en) 2007-08-01 2007-08-01 Fork supporting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070077475A KR20090013401A (en) 2007-08-01 2007-08-01 Fork supporting device

Publications (1)

Publication Number Publication Date
KR20090013401A true KR20090013401A (en) 2009-02-05

Family

ID=40683843

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070077475A KR20090013401A (en) 2007-08-01 2007-08-01 Fork supporting device

Country Status (1)

Country Link
KR (1) KR20090013401A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106082021A (en) * 2016-06-27 2016-11-09 安徽宇锋仓储设备有限公司 A kind of forklift with balance system
CN112479079A (en) * 2020-11-26 2021-03-12 国网山东省电力公司建设公司 Power cabinet shifting device for indoor power construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106082021A (en) * 2016-06-27 2016-11-09 安徽宇锋仓储设备有限公司 A kind of forklift with balance system
CN112479079A (en) * 2020-11-26 2021-03-12 国网山东省电力公司建设公司 Power cabinet shifting device for indoor power construction
CN112479079B (en) * 2020-11-26 2022-07-22 国网山东省电力公司建设公司 Power cabinet shifting device for indoor power construction

Similar Documents

Publication Publication Date Title
JP4143190B2 (en) Reach fork truck with battery block
JP2007091423A (en) Forklift and pallet locking device
JP2018039578A (en) Forklift and pallet
KR20090013401A (en) Fork supporting device
KR100906467B1 (en) Fork driving device
KR20090076041A (en) Fork lift having crane
KR100790321B1 (en) Structure of slide load frame
KR20040033547A (en) Shifting type fork mover of fork lift
KR200445929Y1 (en) A Driving Axle
KR200444278Y1 (en) Fork driving device
KR100916590B1 (en) Fork driving device
KR100908265B1 (en) Fork Drive of Forklift
KR100937351B1 (en) Fork device in forklift truck
KR100906471B1 (en) Fork driving device
KR200445022Y1 (en) Fork driving device
KR101794473B1 (en) Lift platform for vehicle
JP7164285B2 (en) Forklift finger bars and forklifts equipped with such finger bars
KR200484609Y1 (en) Control Lever Guard Member for Reach Type Folklift
KR200247811Y1 (en) An electric motorcar for a wagon traction
KR20070068944A (en) The folding fork of forklift truck
KR200360337Y1 (en) The wheeled excavators lift fork
JPH06336399A (en) Stabilizer device in forklift
KR100728837B1 (en) Mast assembly hinge in forklift truck
KR200354464Y1 (en) Front outrigger device of truck-crane
JP2003212486A (en) Method for fixing pallet of load handling vehicle

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application