JP3103933B1 - Clamping device for cargo handling - Google Patents

Abstract

An object of the present invention is to provide a cargo handling clamp device which can stably clamp a simple package without dropping the package or damaging a packaging material or an article to be packaged. SOLUTION: A pair of support members provided on a work vehicle are supported on the front surface of the support member so as to be movable in the left-right direction and face each other, and are provided so as to be movable toward and away from each other by a cylinder device for clamping. In a clamping device provided with a clamp plate 7, a package B of a simple package in which the clamp plate 7 protrudes toward the opposing clamp surface 71, and a packaging material is adhered to upper and lower parts of an object to be packaged. The engaging support member 10 that engages with the lower end of the upper packaging material b1 is provided so as to be able to move in and out of the clamp surface 71 using the spring means 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device used for loading and unloading a box-shaped package such as a cardboard carton.

[0002]

2. Description of the Related Art Conventionally, home electric appliances such as a washing machine and a dryer have been entirely formed by a cardboard carton case through a cushioning material such as a synthetic resin foam such as styrene foam. It was packaged (full packaging). In recent years, due to environmental problems and resource saving problems caused by disposal of packaging materials and the like, as shown in FIG. 7, the packaging materials (b1) ( b2) is attached and packaged, and this is made into a simple package (B) tightened with a band (b3).

[0003] In the loading and unloading work of the box-shaped package, a clamping device called a carton clamp mounted on a work vehicle is often used. This clamp device is a device that clamps and transports a box-shaped package by sandwiching it from both sides by a pair of left and right flat plate-shaped clamp plates supported by arms movable in opposite directions. There is an advantage that it is not necessary to transport the pallet for loading in the cargo handling work, and it is possible to omit the pallet.

In the meantime, since the clamp device clamps the package by clamping the package from both sides with clamp plates, the right and left clamp plates clamp the package with a strong force.

At this time, since the clamp plate has a relatively large clamp area, if the package is a full package, the cardboard case is clamped with a strong force without crushing or the like. However, in the case of the above-mentioned simple packaging, since the strength of the upper and lower packaging materials is not so high, if the package is clamped with a strong force as in the case of full packaging, there is a problem such as collapse of the packaging material. However, if the clamping force is weakened, there is a possibility that the package may fall.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and has been made in consideration of the above, and is intended to stably clamp a simple package without danger of falling and damaging the upper and lower packaging materials and articles to be packaged. A clamping device is provided.

[0007]

According to the present invention, there is provided a clamp apparatus for cargo handling which is provided on a work vehicle and clamps a box-shaped package from both sides. A pair of clamp plates which are supported movably in the left-right direction on the front part of the support provided at the front and are opposed to each other, and which are provided so as to be movable toward and away from each other by a cylinder device for clamping. The two clamp plates respectively protrude toward the opposing clamp surfaces, and engage with the lower end of the upper packaging material of the simple packaging package in which the packaging material is attached to the upper and lower parts of the package. It is characterized in that a bearing member is provided.

[0008] Thus, the package of the simple package can be clamped with good stability in a state where the package is supported by engaging the engagement support member with the lower end of the upper packaging material. Even if it is not so strongly clamped, there is no danger of falling. Cargo handling such as transportation can be performed.

In the above-mentioned clamp device, it is preferable that the engagement support member is provided so as to be able to freely enter and exit with respect to the clamp surface of the clamp plate. That is, in the case of a package of simple packaging, the engaging support member can be clamped by engaging the engaging support member with the lower end of the upper packaging material in the same manner as described above, with the engaging support member protruding. In the case of a body, the engaging support member can be clamped in the same manner as in the related art by making the engaging support member non-projecting from the clamp surface, and can be used according to the form of the package.

[0010] In particular, the engagement support member is held in a protruding state inward with respect to the clamp surface of the clamp plate by an urging force of a spring means, and at least against the urging force by a pressing force from the inside. It is preferable to be provided so as to retreat to a position substantially flush with the clamp surface.

[0011] Thereby, in the case of a simple package,
In the same manner as above, the engaging support member can be engaged with the lower end of the upper packaging material and clamped in a supported state. In the case of a normal full-package package, if the package is sandwiched between the clamp surface and the clamp surface against the urging force of the spring means, the engagement support member is pressed by the package. The package is retracted to one position, and the package can be clamped as it is. That is, it can be used as it is for a simple package or a full package without any special operation.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described based on embodiments shown in the drawings.

FIG. 1 is a side view of a work vehicle equipped with a clamp device according to the present invention, FIG. 2 is an enlarged side view of the clamp device, FIG. 3 is an enlarged plan view of the clamp device, and FIG. 5 is an enlarged cross-sectional view of a portion of the engaging support member of the clamp device, and FIG. 6 is a cross-sectional view of the same with the engaging support member retracted.

In FIG. 1, reference numeral (1) denotes a support such as a mast of a lifting / lowering device provided at a front portion of a forklift vehicle or other similar movable work vehicle (C). A clamp device (A) according to the invention is mounted and supported so as to be able to move up and down.

The clamp device (A) includes a guide rail member (2) horizontally arranged in the left-right direction on the front surface of the support (1). The guide rail member (2) includes a plurality of pairs (two pairs in the illustrated example) between a pair of left and right side plates (2a) and (2b) connected to lifting means provided inside the support (1). Guide pipe (3)
a) (3b) is horizontally spanned in the left-right direction, and one of these two paired guide pipes (3a)
Are open to the left as viewed from the front, and the other guide pipe (3b) is opened to the right as viewed from the front, and is alternately arranged vertically.

The guide pipes (3a) and (3b) are respectively provided with guide rods (4a) from the left and right opening sides.
(4b) is slidably fitted in the axial direction (left-right direction). Support brackets (5a) and (5b) are connected to the outer ends of the left and right guide rods (4a) and (4b), respectively.
Arm members (6a) (6) extending forward through
b), and a pair of left and right clamp plates (7) (7) are formed on both arm members (6a) and (6b) so as to form vertical surfaces and extend in the front-rear and vertical directions.

The pair of clamp plates (7) and (7) are composed of left and right side plates (2a) or (2b) of the guide rail member (2) and a support bracket (5b) or (5) on the other side.
a) with a cylinder device (8) interposed between
They are provided so as to be movable toward and away from each other, so that a box-shaped package can be clamped from both sides. In particular, the guide pipes (3a) (3
b), the support bracket (5)
a) A guide groove (41a) through which a connecting portion (40a) (40b) between the (5b) and the guide shaft (4a) (4b) passes.
(41b) is provided so that it can be approached to a considerably narrow interval position as shown by a chain line in FIG.

The pair of right and left clamp plates (7) (7)
Are made of an elastic material such as a rubber plate, and formed with a small unevenness (not shown) for preventing slippage on the side of the opposed clamping surface (71) of the flat plate-shaped main body (70) made of an iron plate or the like. A protection plate (72) is mounted. (73) is a reinforcing plate mounted on the back surface (outer surface) of the flat main body (70), and the reinforcing plate (73) is provided with the arm member (6a).
(6b) are connected.

In the case shown in the figure, a rib-like projection (74) in the front-rear direction is vertically provided on the outer surface of the reinforcing plate (73) of the clamp plate (7) as the connecting means.
At the approximate center of the protrusion (74) in the front-rear direction, the tip of the arm member (6a) or (6b) is pin-connected,
Further, a pin member (75) projecting from the arm member (6a) or (6b) is engaged with a long hole in the left-right direction provided at the rear end of the rib-shaped projection (74). Thereby, the clamp plates (7) and (7) are supported rotatably around the pin coupling portion (76) within the range of the elongated hole.

The size of the clamp plate (7) varies depending on the package to be unloaded. For example, the vertical dimension is substantially the same as or slightly larger than the height of the largest package (B), and the size in the front-rear direction. The dimensions are set to a length that allows a plurality (for example, two) of the package bodies to be clamped in parallel.

Each of the clamp plates (7) and (7) protrudes toward the opposing clamp surface (71) at a required location on the inner side thereof, as shown in FIG. )
In the upper and lower part of the packaging material for the upper and lower parts (for the top and bottom) (b
1) An engaging support member (10) (10) capable of engaging the lower end of the upper packaging material (b1) with respect to the simple packaging package (B) to which (b2) is attached and tightened by the band (b3). Is provided.

When the engagement support member (10) is engaged with the lower end of the upper packaging material (b1) of the package (B), the upper and lower packaging materials (b) are clamped by the clamp plate (7).
1) It is provided at a height position where the portion of (b2) can be clamped.

The engaging support member (10) is attached to the clamp surface (71) in a protruding manner so as to be engageable with the lower end of the upper wrapping material (b1) in the packing body (B). Although it may be a device dedicated to cargo handling work of the package (B), in practice, it is preferable that the device is provided so as to be able to freely enter and exit in the opposite direction to the clamp surface (71).

As a specific example, in the case of the embodiment shown in the drawing, a concave portion formed by cutting out the protective plate (72) is formed at a required position inside the clamp surface (71) of the clamp plate (7). Portion (77), and a plate-like engagement support member (1) having a shape substantially corresponding to the concave portion (77).
0) is hinged to the vicinity of the lower end of the recessed portion (77) by a hinge connecting means, and is substantially flush with the clamp surface (71) with the pivoted portion (78) as a fulcrum. The upper portion is pivotally supported between an inwardly inclined state (the state shown in FIG. 5), whereby the engagement support member (10) is provided so as to be able to move in and out of the clamp surface (71). I have.

The engaging support member (10) is formed on the surface of a thin plate-shaped main plate (11) having an upper end bent outward (toward the back side) in a hook shape, similarly to the clamp plate (7). A protection plate (12) such as a plate is mounted. Further, a rubber plate or the like similar to the above may be attached to the upper end portion engaged with the package, but in practice, the engagement state of the package (B) with the upper packaging material (b1) is considered. In order to make it easy to separate from the cover, it is preferable to attach a protective material (13) made of a synthetic resin with good slip.

Further, the engagement support member (10) is held in a state of being protruded inward with respect to the clamp surface (71) by the biasing force of a spring means. It is preferable that the pressing member is provided so as to be retracted at least to a position substantially flush with the clamp surface (71) against the urging force by a pressing force from the contact member.

As means for this, the engagement support member (1)
The bent end (14) at the upper end of the main plate (11) penetrates through the cutout hole (79) formed in the clamp plate (7) and projects outward (to the rear side). (14)
Is provided so as to be pressed inward by a spring means (15) such as a leaf spring attached to the outer surface of the flat plate-shaped main body (70) or the reinforcing plate (73) of the clamp plate (7). In a normal state, as shown in FIG. 5, the engagement support member (10) is kept in a state of protruding inward, and a pressing force acts on the engagement support member (10) from inside. The engaging support member (10) is configured to retreat against the spring means (15) to be substantially flush with the clamp plate (7) (the state shown in FIG. 6). Of course, other spring means can be used.

The engaging support member (10) has a protruding edge (16) extending upward at the end of the bent end (14) at the upper end, and the protruding edge (16) is provided. Clamp plate (7)
, The upper end of the engagement support member (10) does not protrude inward beyond a certain dimension. The projecting dimension of the engagement support member (10) is such that the article to be packaged (b) is clamped so as to engage with the lower end of the upper packaging material (b1) of the package (B) for simple packaging.
It is stipulated that it does not abut.

It is possible to provide only one engaging support member (10) for each clamp plate (7), but two or more engaging support members (10) are spaced apart in the front-rear direction as shown in the figure. The plurality of engaging support members (10) are provided, and a plurality of packages (B) of simple packaging are provided in parallel so as to be able to engage with the upper packaging material (b1) avoiding the banding portion. desirable.

The means and form for providing the engaging support member (10) so as to be able to move in and out of the clamp surface (71) are not limited to the above-described embodiment, and the package (B) of the simple package is provided.
Various other structures and forms capable of engaging and supporting the upper packaging material (b1) of the present invention are possible. For example, the engagement support member may be provided so as to be able to be freely moved in and out by manual operation, or an engagement structure which can be disengaged and added may be provided so as to maintain the projected state unless the engagement is released. further,
The engagement support member may be provided detachably.

A cargo handling operation using the clamp device (A) according to the embodiment of the present invention will be described.

The packaging material (b1) is placed on the upper and lower parts of the article to be packaged (b).
The package (B) of the simple packaging, which is attached with (b2) and fastened by the band (b3), is placed in a state of being stacked in two stages, for example, two in a row at the front, back, left and right as shown in FIGS. In advance, the lower package (B) is clamped by a pair of left and right clamp plates (7) and (7) of a clamp device (A) provided at the front of the work vehicle (C), and the cargo handling work such as transportation is performed. I do.

At this time, since the engaging support members (10) of the respective clamp plates (7) are in a state of protruding inward from the clamp surfaces (71), the engaging support members (1)
0) is located below the upper packaging material (b1) of the package (B). In this manner, the packing body (B) is sandwiched between the two clamp plates (7) and (7) and lifted by the operation of the cylinder device (8) for clamping.
0) is engaged with the lower end of the side of the upper packaging material (b1). In this state, the packaging material (b1) above and below the package (B)
The portion (b2) is sandwiched between the clamp plates (7) and (7). Thus, the packing body (B) can be stably cramped without increasing the clamping force so much, and the cargo handling work such as transportation can be performed without fear of falling.

In the case of a normal full package,
If the engaging support member (10) is set in a non-projecting state with respect to the clamp surface (71), it can be used as in the conventional case. In particular, as in the illustrated embodiment, when the engagement support member (10) is provided so as to maintain the protruding state by using the spring means (15), if the package is sandwiched, The engagement support member (10) is pressed by the package body.
Retreats to a position substantially flush with the clamp surface (71) against the urging force of the spring means (15), and can clamp the package (as it is). The engagement support member (10) is in a protruding state.

Therefore, the above-mentioned clamping device (A) utilizing the spring means (15) can be used as it is for a simple package or a full package without any special operation, and the cargo handling work is possible. Can be performed efficiently.

[0036]

As described above, according to the clamp device of the present invention, the package of the simple package can be clamped with good stability without fear of falling and without damaging the upper and lower packaging materials and the packaged object. Transport and other cargo handling operations can be easily and efficiently performed.

In particular, according to the inventions of claims 2 to 4, it can be used for both simple packaging and full packaging. Particularly in the case of the invention of claim 3, both packages can be used without any special operation. It can be used for cargo handling of the package.

[Brief description of the drawings]

FIG. 1 is a side view of a work vehicle equipped with a clamp device according to the present invention.

FIG. 2 is an enlarged side view of the same clamp device.

FIG. 3 is an enlarged plan view of the same clamp device.

FIG. 4 is a cross-sectional view taken along line XX of the previous figure.

FIG. 5 is an enlarged cross-sectional view of an engaging support member of the same clamp device.

FIG. 6 is a sectional view showing a state where the engaging support member is retracted.

FIG. 7 is a perspective view showing a package of simple packaging.

FIG. 8 is a front view of the packing body in a cargo handling state.

FIG. 9 is a plan view of the same.

[Explanation of symbols]

 (A) Clamping device (B) Simple packaging package (b) Packaged object (b1) Upper packaging material (b2) Lower packaging material (C) Work vehicle (1) Support body (2) Guide rail member (3a) (3b) Guide pipe (4a) (4b) Guide rod (5a) (5b) Support bracket (6a) (6b) Arm member (7) Clamp plate (71) Clamp surface (72) Protective plate (73) Reinforcement plate ( 76) Pin connection part (77) Recessed part (78) Pivot part (8) Cylinder device (10) Engagement support member (11) Main component plate (12) Protective plate (13) Protective material (14) Bending end Part (15) Spring means (16) Projecting edge

Claims (3)

(57) [Claims] 1. A clamping device mounted on a working vehicle for clamping a box-shaped package from both sides, wherein the clamping device is supported movably in the left-right direction on a front surface of a support provided on the working vehicle. It is provided with a pair of clamp plates that are opposed to each other, and are approached to each other by a cylinder device for clamping, and are movably provided in a separating direction, and the two clamp plates respectively protrude toward the opposed clamp surfaces. A clamping device for cargo handling, wherein an engaging support member is provided to engage with a lower end of an upper wrapping material of a simple wrapping package in which a wrapping material is attached to upper and lower parts of a wrapped object. 2. The cargo handling clamp device according to claim 1, wherein said engaging support member is provided so as to be able to move in and out of a clamp surface of a clamp plate. 3. The engagement support member is held in a state of protruding inward from a clamp surface of a clamp plate by an urging force of a spring means, and is at least opposed to the urging force by a pressing force from inside. 3. The cargo handling clamp device according to claim 2, wherein the clamp device is provided so as to retreat to a position substantially flush with the clamp surface.