JP4169708B2 - Snow removal attachment - Google Patents

Description

The present invention relates to a snow attachment, in particular, about the snow removal attachments used in forklifts.

Conventionally, snow that has accumulated on parking lots, plazas, roads, and the like has been removed by using snow removal machines. Among them, a snow removal attachment having a blade for pushing snow is attached to a fork of a forklift to be used as a snow removal work vehicle (see, for example, Patent Document 1 and Patent Document 2).
JP 2003-41543 A No. 7-50399

However, in the snow removal attachment disclosed in Patent Documents 1 and 2, the blade is disposed in a direction perpendicular to the traveling direction of the forklift, and the function for adjusting the swing angle (angling angle) is provided. Not equipped. As a result, there has been a problem that the traveling direction of the forklift must always match the direction in which the snow is pushed. Such a snow removal attachment structure complicates work in a narrow place. Also, for example, when working to collect snow accumulated in the center of the road on the shoulder, it is necessary to push out the snow while changing the direction of the forklift to the left and right sides with respect to the road extending direction. There was a problem that it took time.
In addition, some conventional construction machines can adjust the swing angle (angling angle) of the blade for pushing the earth and sand. The swing angle adjusting mechanism used in such construction machines. Many of these are hydraulically complex and are not suitable for use in snow removal attachments attached to forklifts.

  Further, the snow removal attachment disclosed in Patent Document 1 has a structure in which a fork of a forklift is inserted and attached to a cylindrical base member, and a stopper is attached to a bent corner portion of the fork to prevent removal. Yes. However, in this structure, when the fork inserted into the cylindrical base member is too long, there is a problem that the position of the stopper is not suitable and the stopper may not be used.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a snow removal attachment for a forklift that can provide a blade angle adjusting function with a simple structure and can be adapted to various fork lengths. It is another object of the present invention to provide an attachment that can be easily attached to various fork lengths when attaching members for various uses to a forklift.

In order to achieve the above object, a snow removal attachment according to the present invention includes a base member attached to a fork of a forklift, a blade pivotably mounted on the tip end portion of the base member, and and a connecting member for connecting and supporting the said base member, the pivot angle relative to the base member of the blade, as well as adjustable by changing the connection position between the base member of the connecting member, the The base member includes an insertion holding member into which the fork is inserted, a fixing member attached to a bent corner portion of the fork, and a pair of left and right connecting bars that connect the insertion holding member and the fixing member. And the connecting bar has a plurality of interval adjusting holes for adjusting the interval between the insertion holding member and the fixing member, and is provided in the insertion holding member. The hole formed in the protruding piece and the predetermined interval adjusting hole of the connecting bar are connected together by bolts and nuts, and another interval adjusting hole of the connecting bar is connected to the fixing member. The holes formed in the protruding pieces of the bar attaching portion are combined and connected with bolts and nuts .

The base member has a pair of horizontal strip projections on the left and right sides, and each of the pair of horizontal strip projections has a plurality of swing angle adjustment holes formed at predetermined intervals. one end of Rutotomoni the connecting member is Ru are selectively connected to the swing angle adjusting holes through the insertion tool.

According to the snow removal attachment according to the present invention, the blade angle adjustment function can be a simple structure that does not significantly increase the external dimensions and weight. Moreover, it can be set as the structure which can respond to various fork length.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIGS. 1-6 is a figure for demonstrating the snow removal attachment which concerns on one Embodiment of this invention.
As shown in FIG. 1, the snow removal attachment according to the present invention is swingable to the left and right at the base member 1 attached to the forks 31, 31 of the forklift 30 and the tip 1a of the base member 1. The blade 2 is pivotally attached to ──, and a pair of connecting members 3 and 3 for connecting and holding the blade 2 and the base member 1 are provided.

As shown in FIGS. 2 and 3, the base member 1 includes an insertion holding member 4 into which a pair of forks 31, 31 are inserted, and a pair attached to bent corners 31a, 31a of the forks 31, 31 respectively. And a pair of connecting bars 6, 6 that connect the insertion holding member 4 and the pair of fixing members 5, 5.
The insertion holding member 4 includes a blade mounting portion 7 having a substantially triangular shape in a plan view, and a pair of rectangular holding cylindrical insertion holding portions 8 and 8 into which a pair of forks 31 and 31 are inserted.
The blade mounting portion 7 of the base member 1 has a hole 7a for swingably mounting the blade 2, and the blade 2 and the blade mounting portion 7 are connected by a pin 9 (see FIG. 4).
The pair of insertion holding portions 8 are fixed to the blade mounting portion 7 so as to extend substantially in parallel from the bottom of the blade mounting portion 7 having a substantially triangular shape in plan view. Further, the insertion holding portion 8 is formed in a cylindrical shape with one end closed.

Further, as shown in FIG. 3, a pair of horizontal strip-like protrusions 10 and 10 extending in the front-rear direction are provided on the left and right sides of the insertion holding portions 8 and 8 of the base member 1. Each of the pair of horizontal strip projections 10 is formed with three swing angle adjusting holes 11 at predetermined intervals in the front-rear direction.
Further, a mounting plate 12 is fixed to the upper side of the rear portion of the insertion holding portion 8, 8 of the insertion holding member 4 so as to straddle the pair of insertion holding portions 8, 8. The mounting plate 12 is provided with two protruding pieces 13 and 13 protruding therefrom.

The fixing members 5, 5 have a shape in which a part of the upper opening of the U-shaped base portion 14 is closed by a strip plate-like connecting bar mounting portion 15.
On the upper surface of the connecting bar mounting portion 15, a projecting piece 16 is projected. In addition, the base portion 14 is positioned on the rear side of the bent corner portion 31a of the fork 31 at the time of attachment, and the fixing member 5 (base member 1) is fixed to the bent corner portion 31a of the fork 31 so that the fork of the snow removal attachment is attached. A rod-like stopper 17 for preventing the drop-off from 31 is attached.

The connecting bar 6 is formed with a plurality of interval adjusting holes 6a at predetermined intervals in the longitudinal direction. The insertion holding member 4 and the fixing member 5 are connected via the interval adjusting holes 6a. Specifically, holes (not shown) formed in the pair of projecting pieces 13 and 13 of the mounting plate 12 and a predetermined interval adjusting hole 6a of the connecting bar 6 are combined and connected by bolts and nuts, By inserting another gap adjusting hole 6a of the connecting bar 6 and a hole (not shown) formed in the protruding piece 16 of the connecting bar mounting portion 15 and connecting them with bolts and nuts, the insertion holding member 4 and connecting bar 6. The fixing member 5 is sequentially connected.
Then, by selectively selecting one of the plurality of interval adjusting holes 6a... And changing the connection position with the insertion holding member 4, the interval between the insertion holding member 4 and the fixing member 5 (in FIG. 3). The length in the direction of arrow A) can be adjusted. That is, the length of various forks 31 inserted into the insertion holding portion 8 of the insertion holding member 4 can be accommodated. In the embodiment of the present invention, the horizontal length of the fork 31 protruding from the bent corner portion 31a can correspond to, for example, 770 mm to 1820 mm.

As shown in FIG. 2, the blade 2 is a component for pushing snow during work, and is formed in a side-down trapezoidal shape, an arc shape, or a substantially C shape when viewed from the side. The blade 2 can be changed to another shape that facilitates snow removal. An edge 20 is detachably attached to the lower portion of the blade 2 with a bolt. Thereby, when the edge 20 is worn due to the lower part of the blade 2 rubbing against the ground, it can be easily replaced with a new edge 20.
In the embodiment of the present invention, the snow removal width of the blade 2 can correspond to, for example, 1400 mm to 2300 mm. The width of the blade 2 is preferably in the range of 80% to 185% with respect to the vehicle width of the forklift 30. If the width of the blade 2 is made too small relative to the vehicle width of the forklift 30, the amount of snow removal per movement will be reduced, so that the work efficiency will be reduced, and the width of the blade 2 will be made larger than the vehicle width of the forklift 30. If it is too large, it becomes difficult to handle the forklift 30 and the working efficiency decreases.
As shown in FIG. 4, a pair of connecting holes 2 a and 2 a for connecting the connecting member 3 are formed symmetrically with respect to the virtual cutting surface of the blade 2 on the rear side of the blade 2.

As shown in FIGS. 4, 5, and 6, the connecting members 3 are formed in an elongated shape, and a pair of connecting members 3 are disposed on the left and right of the base member 1 in plan view. Each of the pair of connecting members 3, 3 has one end connected to the connecting hole 2 a of the blade 2 and the other end connected to a predetermined swing angle adjusting hole 11 of the horizontal strip-like protrusion 10. Thereby, the swing angle (angling angle) of the blade 2 with respect to the base member 1 is maintained.
Connection between the connection hole 2 a and the connection member 3 and connection between the swing angle adjustment hole 11... And the connection member 3 are performed by the insertion tool 18. Specifically, pins 25 that protrude downward are provided at both ends of the connecting member 3, and the pins 25 and 25 at both ends are inserted into the connecting hole 2a and the predetermined swing angle adjusting hole 11, respectively, and further removed. By attaching the stopper 26 to the pin 25, the connecting hole 2a, the connecting member 3, and the predetermined swing angle adjusting hole 11 are sequentially connected.
The insertion tool 18 is not limited to one embodiment of the present invention, and can be changed to another one. For example, it is preferable to use bolts and nuts instead of the pins 25 and the retaining pins 26.

When the swing angle (angling angle) θ of the blade 2 with respect to the base member 1 is 0 degree, as shown in FIG. 5, the pair of connecting members 3, 3 are three in the front-rear direction (front side, center, rear side). ) Each of the arranged swing angle adjusting holes 11 is connected to a central hole. When the blade 2 is swung to the left to obtain a swing angle (angling angle) θ, as shown in FIG. 6, the left connecting member 3 has three swing angle adjustment holes 11 arranged in the front-rear direction. Among them, the right side connecting member 3 is connected to the rear side hole, and the right side connecting member 3 is connected to the front side hole among the three swing angle adjusting holes 11 arranged in the front-rear direction. Accordingly, in the embodiment of the present invention, the swing angle (angling angle) θ can be swung to the left and right by, for example, 30 degrees.
It is possible to adjust the swing angle (angle angle) θ of the blade 2 with respect to the base member 1 in more stages by providing more swing angle adjusting holes 11.
Further, by preparing in advance a plurality of types of ones having different lengths of the left and right connecting members 3, 3 and selecting them from them, and changing them to different lengths on the left and right sides, It is also free to adjust the angle (angle) θ.
In the embodiment of the present invention, a pair of connecting members 3 are disposed on the left and right sides of the base member 1 in plan view. However, the present invention is not limited to this, and two or more pairs of connecting members 3 are preferably disposed on the left and right. In this way, Ru can hold the blade 2 firmly.

  As described above, the snow removal attachment according to the present invention includes the base member 1 attached to the fork 31 of the forklift 30, the blade 2 pivotally attached to the distal end portion 1 a of the base member 1, and the blade 2. And a connecting member 3 for connecting and holding the base member 1 and changing the connecting position of the connecting member 3 to the base member 1 with respect to the swing angle (angling angle) θ of the blade 2 with respect to the base member 1. Therefore, the angle adjustment function of the blade 2 with respect to the base member 1 can be obtained with a simple structure. Further, by connecting and holding the blade 2 and the base member 1 with the connecting members 3 and 3, the angle adjusting function can be achieved without greatly increasing the external dimensions and weight compared to the case where the angle adjusting function is not provided. Obtainable. As a result, the operability of the forklift 30 is improved during work, and the snow removal attachment can be easily transported after being detached from the forklift 30 during non-work.

The base member 1 connects the insertion holding member 4 into which the fork 31 is inserted, the fixing member 5 attached to the bent corner portion 31 a of the fork 31, and the insertion holding member 4 and the fixing member 5. And the connecting bar 6 can be easily configured by having a plurality of interval adjusting holes 6 a for adjusting the interval between the insertion holding member 4 and the fixing member 5. The connection position of the insertion holding member 4 with the base member 1 can be changed. Thereby, it can respond to various fork lengths.

  In addition, a pair of horizontal strip projections 10 and 10 are provided on both the left and right sides of the base member 1, and a plurality of swing angle adjustment holes 11 are provided in each of the pair of horizontal strip projections 10 and 10 at predetermined intervals. ... and one end of the connecting member 3 is selectively connected to the swinging angle adjusting hole 11 through the insertion tool 18 so that the angle adjusting mechanism of the blade 2 can be made simple and easy. The swing angle (angling angle) θ can be adjusted. As a result, the manufacturing cost can be reduced and a structure with less trouble can be achieved as compared with the case where the angle adjustment function of the blade 2 is obtained using a hydraulic cylinder or the like.

1 is a perspective view of a forklift equipped with a snow removal attachment showing an embodiment of the present invention. It is the perspective view which looked at the snow removal attachment which shows one Embodiment of this invention from the front. It is the principal part perspective view seen from back. It is a principal part disassembled perspective view. It is plane explanatory drawing which shows a braid | blade when the rocking | fluctuation angle of a braid | blade is 0 degree | times. It is a plane explanatory view showing the case where the swing angle of the blade is changed.

Explanation of symbols

1 Base member 1a Tip
2 Blade 3 Connection member 4 Insertion holding member 5 Fixing member 6 Connection bar 6a Interval adjustment hole
10 Horizontal strip projection
11 Swing angle adjustment hole
13 Protruding piece
15 Connecting bar mounting
16 Protruding piece
18 Insertion tool
30 Forklift
31 forks
31a Bent angle θ Swing angle (Angle angle)

Claims (2)

A base member (1) attached to a fork (31) of a forklift (30), a blade (2) pivotally attached to a tip end (1a) of the base member (1), and the blade (2) and a connecting member (3) for connecting and holding the base member (1).
The oscillation angle (theta) with respect to the base member (1) of the blade (2), as well as adjustable by changing the connection position between the base member (1) of the coupling member (3), the The base member (1) includes an insertion holding member (4) into which the fork (31) is inserted, a fixing member (5) attached to the bent corner (31a) of the fork (31), A pair of left and right connecting bars (6) and (6) for connecting the insertion holding member (4) and the fixing member (5), and the connecting bar (6) includes the insertion holding member; (4) and a plurality of interval adjusting holes (6a) for adjusting the interval between the fixing member (5) and the protruding piece (13) provided in the insertion holding member (4). Combine the hole and the predetermined spacing adjustment hole (6a) of the connecting bar (6) with bolts and nuts. Connected, and another interval adjusting hole (6a) of the connecting bar (6) and a hole formed in the protruding piece (16) of the connecting bar mounting portion (15) of the fixing member (5). The snow removal attachment is characterized by being configured to be coupled with bolts and nuts . The base member (1) has a pair of horizontal strip projections (10) (10) on both the left and right sides.
In each of the pair of horizontal strip projections (10), (10), a plurality of swing angle adjusting holes (11) are formed at predetermined intervals, and one end of the connecting member (3) is an insertion tool. The snow removal attachment according to claim 1, wherein the snow removal attachment is selectively connected to the swing angle adjusting hole (11) via (18).

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