JP4438980B2 - Fork support structure for forklift fingerboard - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for supporting a fork on a fingerboard of a forklift.
[0002]
[Prior art]
FIG. 3 is a perspective view of a fork support structure for a forklift fingerboard according to a prior art example of the present invention.
4 is a cross-sectional view of a structure for supporting a fork to a fingerboard of a forklift according to the prior art example shown in FIG.
[0003]
First, in FIG. 3, the cushioning material 102 is attached to the front surface 111 of the lower finger bar 101 that is one of the members constituting the finger board 103 , that is, the surface against which the rear surface 141 of the fork 104 abuts. . When the buffer member 102 are illustrated in those according to the length dimension entire area of the front surface 111 of the lower finger bars 101 may not that the entire area, moving adjusting the forks 104 in the lateral direction, the fork The rear surface 141 of 104 may be divided into a plurality of partial areas so as not to be in direct metal contact with the front surface 111 of the lower finger bar 101 .
[0004]
Next, in FIG. 4 in which the support structure of the fork to the fingerboard of the forklift shown in the perspective view of FIG. 3 is shown in a sectional view, the cushioning material 102 is formed in the groove 101a on the front side 111 of the lower finger bar 101. And attached by fitting in the groove 101a . As for the mounting method, there are no problems with general stopping methods such as adhesion, press-fitting, and screw fastening. The cushioning material 102 is not limited to the lower finger bar 101 , and the effect can be obtained by attaching the cushioning material 102 to both the upper finger bar 108 and the upper and lower finger bars 108 , 101 . By attaching the cushioning material 102 , the fork 104 can be prevented from generating noise between the lower finger bar 101 and the upper finger bar 108 due to rattling, and further moved to the left and right to adjust the distance between the forks 104. It becomes easy.
[0005]
FIG. 5 is a cross-sectional view of a fingerboard that supports a fork according to the prior art. As shown in FIG. 5, the support structure for the pair of left and right forks 104 ′ is formed at the upper part of the rising part of the fork 104 ′, and the bent part 104 ′ a whose front end part faces downward is formed on the upper finger bar 108. The fork 104 ′ can be moved to the right or left side by being hooked on the projecting edge facing upward, and the left and right sides of the upper finger bar 108 ′ are appropriately spaced downward from the fixing position. The fork 104 ′ is formed at the lower part of the back surface of the rising portion of the pair of forks 104 ′, and the fork 104 ′ can be moved and adjusted to the right or left by engaging the bent portion 104′b whose tip is directed upward. It has a lower finger bar 101 ′ having a protruding edge facing downward. The front surface of the upper finger bar 108 ′ is retracted from the front surface of the lower finger bar 101 ′, and therefore there is a gap S1 between the rear surface of the fork 104 ′ and the front surface of the upper finger bar 108 ′. Further, the fork 104 ′ is moved to the right side or the left side by being engaged with a bent portion 104′b formed at the lower part of the rear surface of the rising portion of the pair of left and right forks 104 ′ and having the tip portion facing upward. There is a gap S2 on the projecting edge facing downward.
In the conventional configuration described above, the gaps S1 and S2 are thus provided between the fork 104 ′ and the fingerboard 103 ′. Therefore, when the forklift travels on an uneven road surface, or when the mast device is raised or lowered, A hitting sound caused by the gaps S1 and S2 is generated between the members, and sometimes the fork is difficult to adjust.
[0006]
[Problems to be solved by the invention]
It is an object of the present invention to prevent a problem that a hitting sound is generated between members in the fork support structure and that it is difficult to adjust the movement of the fork.
[0007]
[ Means for Solving the Problems ]
The present invention has been made to cope with the above-described problem. In the structure for supporting a fork to a fingerboard of a fork lift that supports a pair of left and right forks and can move and adjust the forks to the right or left, It is formed on the upper part of the back of the rising part of a pair of forks, and the protruding part edge that can be adjusted to move the fork to the right side or the left side by hooking the bent part whose tip part faces downward. An upper finger bar having an appropriate length in the lateral width direction of the vehicle body, and formed below the rear part of the rising portion of the pair of left and right forks, with a lower distance from the fixing position of the upper finger bar. Engage with the bent part with the tip part facing upward, and have a projecting edge facing downwards that can adjust the fork to move left and right A lower finger bar and a plurality of brackets fixed at appropriate positions on the left and right of the upper surface of the lower finger bar, and having a bolt insertion hole, and a front side of the bracket with a cushioning material sandwiched between the front and rear by an iron plate A shock-absorbing plate is attached, and when the fork is not loaded, the back of the fork and the front of the lower finger bar are spaced so that the back of the fork and the shock-absorbing plate are in contact. It is characterized in that it is compressed so that the back surface of the fork contacts the front surface of the lower finger bar.
[0008]
[ Function and effect ]
The present invention attaches a shock-absorbing material plate having a shock-absorbing material sandwiched between steel plates to the front surface of a bracket provided on the upper surface of the lower finger bar, receives the back surface of the fork by this shock-absorbing material plate, Forklift fingers that sometimes create a gap between the front of the lower finger bar and the back of the fork, and compress the cushioning plate so that the back of the fork and the front of the lower finger bar come into contact when the fork is loaded Although it is in the support structure of the fork of the board, by adopting this configuration, when the fork is not loaded, it absorbs the vibration of the fork and cuts off the vibration transmitted to the fingerboard, eliminates rattling noise, and the contact surface with the back of the fork By reducing the number, the movement adjustment to the right side or the left side of the fork becomes easy. In addition, when the fork is loaded, the cushioning material is compressed, the rear surface of the fork hits the front surface of the finger bar, and no load is applied to the bracket or the cushioning material plate, so that the part can be thinned.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an exploded perspective view showing a fork support structure for a forklift fingerboard according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a structure for supporting a fork to a fingerboard of a forklift according to an embodiment of the present invention.
When the following embodiments of the invention of this application are described with reference to FIG. 1 and FIG. 2, the terms used in the description of the prior art examples in FIG. 3 and FIG. The terminology used in the description of the prior art is applied as it is, although the reference numerals are different when referring to the same member.
[0010]
A fork support structure for a fingerboard of a forklift according to an embodiment of the present invention will be described with reference to FIGS.
The present invention relates to a structure for supporting forks 4 and 4 to a fingerboard 3 of a forklift capable of supporting a pair of left and right forks 4 and 4 and moving and adjusting the forks 4 and 4 to the right or left. Bending portions 4a and 4a whose tip portions are directed downward are formed on the upper surface of the rear surface 41 of the rising portions of the left and right forks 4 and 4, respectively. The fingerboard 3 is hooked with bent portions 4a and 4a, which are formed at the upper part of the back surface of the rising portions of the pair of left and right forks 4 and 4 and directed downward. , 4 can be adjusted to move to the right side or left side, and an upper finger bar 8 having an upwardly extending protrusion edge having an appropriate length in the left-right width direction of the vehicle body is provided. Reference numeral 88 denotes a front surface of the upper finger bar 8. A lower finger bar 1 is formed below the upper finger bar 8 at an appropriate interval from a position where the upper finger bar 8 is fixed to the finger board 3. Corresponding to the lower finger bar 1, bent portions 4 b and 4 b are formed at the lower portion of the rear surface 41 of the rising portions of the pair of left and right forks 4, 4 with their tip portions facing upward. The fingerboard 3 is engaged with the bent portions 4b and 4b whose front end portions formed at the lower part of the back of the rising portions of the pair of left and right forks 4 and 4 are directed upward. A lower finger bar 1 having a downwardly projecting edge that can be adjusted to move left and right is provided.
[0011]
Brackets 6a and 6b having bolt insertion holes 6c and 6d are erected and fixed at appropriate positions on the left and right sides of the upper surface 12 of the lower finger bar 1. Further, a shock-absorbing material plate 5 is attached to the front surfaces of the brackets 6a and 6b, and the shock-absorbing material plate 5 extends in the left-right direction of the vehicle with the front and rear sandwiched between the steel plates 51 and 51. The shock-absorbing material plate 5 is attached to the brackets 6a and 6b by screwing bolts 7, 7 and 7 into the bolt insertion holes 6c and 6d.
When no load is applied to the forks 4, 4, the rear surfaces 41, 41 of the forks 4, 4 and the front surface 11 of the lower finger bar 1 are spaced so that the rear surface 41 of the forks 4 contacts the iron plate 51 of the buffer material plate 5. When the forks 4 and 4 are loaded, the cushioning material 2 of the cushioning plate 5 is compressed, and as a result, the rear surface 41 of the forks 4 and 4 comes into contact with the front surface 11 of the lower finger bar 1. By configuring in this way, when the forks 4 and 4 are not loaded, the contact surface of the forks 4 and 4 is small, so that it is easy to adjust the movement of the left and right forks 4 and 4 to the right side or the left side. Become. When the forks 4 and 4 are loaded, the cushioning material 2 is compressed, and the back surfaces 41 and 41 of the forks 4 and 4 come into contact with the front surface 11 of the lower finger bar 1.
[0012]
The state shown in the cross-sectional view of FIG. 2 is when a load is applied to the fork 4, and the back surface 41 of the fork 4 that contacts the iron plate 51 on the front surface of the buffer material plate 5 compresses the buffer 2 and the back surface of the fork 4. 41 and the front surface 11 of the lower finger bar 1 come into contact with each other, and the fork 4 is supported by the lower finger bar 1. Therefore, the gap on the front surface 11 of the lower finger bar 1 at the time of no load has moved to the rear part.
[0013]
For this reason, while absorbing the vibration of the fork 4, the vibration transmitted to a board roller (not shown) can be cut off, and a rattling sound is eliminated. Further, the movement adjustment of the fork 4 is easy because there are few contact surfaces between the fork 4 and the front surface of the lower finger bar 1.
When the load is applied, the cushioning material 2 is compressed, and the back surface 41 of the fork 4 hits and supports the front surface 11 of the lower finger bar 1 , so that the load applied to the bracket 6 does not exceed the load that compresses the cushioning material plate 5. Thinning is possible .
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a structure for supporting a fork to a fingerboard of a forklift according to an embodiment of the present invention.
2 is a cross-sectional view of a structure for supporting a fork to a fingerboard of the forklift according to FIG . 1;
FIG. 3 is a perspective view of a fork support structure for a fingerboard of a forklift according to a prior art example.
4 is a cross-sectional view of a fork support structure for a fingerboard of the forklift according to FIG . 3;
FIG. 5 is a cross-sectional view of a fork support structure for a fingerboard of a forklift according to the prior art.
[Explanation of symbols]
1 ........ Lower finger bar
11・ ・ ・ ・ ・ ・Front of the lower finger bar
12 ..... Upper surface of lower finger bar 2 ..... Buffer material 3 .... Finger board 4 .... Fork
4a・ ・ ・ ・ ・ ・Bending part
4b ... ・Bent
41 ··· Back of fork 5 · · · · Buffer plate 51 · · · Iron plate
6a ... Bracket
6b ... Bracket
6c・ ・ ・ ・ ・ ・Bolt hole
6d ··· Bolt hole
7. Bolt
8 .... Upper finger bar
88 .. ・Front face of upper finger bar

Claims (1)

In the support structure of the fork to the fingerboard of the forklift that supports a pair of left and right forks and can move and adjust the fork to the right or left side, it is formed at the upper back of the rising part of the pair of left and right forks. An upper finger bar that has an upwardly protruding protrusion edge that can be adjusted by moving the fork to the right or left side by hooking a bent portion whose tip is directed downward, Formed at the lower back of the rising part of the pair of left and right forks, with an appropriate interval from the fixing position of the upper finger bar, and engaged with a bent part whose tip is directed upward, A lower finger bar having a downwardly projecting edge that can adjust the fork to the left and right; A plurality of brackets that are fixed at appropriate positions and that have holes for inserting bolts, and a shock-absorbing material plate with a shock-absorbing material sandwiched between the front and rear plates are attached to the front of the bracket. The back of the fork and the cushioning plate come into contact with each other so that there is a gap between the back and the front of the lower finger bar.When the fork is loaded, the cushioning plate is compressed and the back of the fork is brought into contact with the front of the lower finger bar. A structure for supporting a fork to a fingerboard of a forklift characterized by being in contact.

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