JPH0742716B2 - Two-way blade device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a two-way blade device mounted on the front end of an earthmoving vehicle.

<Prior Art> Conventionally, a blade having a two-way blade whose front surface is used as a work surface when performing a so-called pushing operation and whose rear surface is used as a work surface when performing a so-called pulling operation or scraping operation Various devices have been proposed. Such a blade device is attached to the front end of an earthmoving vehicle such as a loader, and is used for inboard cargo handling work and the like.

However, the conventional two-way blade device includes only one of an angle mechanism and a tilt mechanism (for example, a typical two-way blade device including an angle mechanism and a tilt mechanism does not include,
JP-A-49-45504 can be mentioned). Therefore, it is difficult to scrape off the work, that is, to scrape off the processed materials such as coal existing on the walls and corners in the hold,
Human beings perform such work. In order to perform desired cargo handling work including pushing work, pulling work, scraping work, scraping work, etc., the blade, which is a working device, needs to rotate in addition to forward and backward tilting motions. .

<Objects of the Invention> The present invention has been made in view of the above facts, and an object thereof is to provide a tilt mechanism in addition to an angle mechanism and to secure a sufficient processing function, and further, the overall configuration is compact and the vehicle side. It is an object of the present invention to provide an improved two-way blade device having excellent wearability with respect to.

<Summary of the Invention> According to the present invention, a support body mounted to the front end of an earthmoving vehicle, an intermediate support body rotatably connected to the support body about a first axis extending in the front-rear direction, and a curve. A blade main body having a front board defining a front surface and a rear board defining a curved rear surface and pivotally connected to the intermediate support about a second axis extending in the up-and-down direction; A fluid pressure cylinder mechanism for tilting interposed between the intermediate support and the support main body to rotate the intermediate support and the blade main body around the first axis, the intermediate support and the blade. A pair of angle fluid pressure cylinder mechanisms interposed between the intermediate support and the intermediate support to rotate the blade main body about the second axis, the intermediate support and the tilt fluid. Pressure A two-way blade device, characterized in that the binder mechanism and the pair of hydraulic cylinder mechanisms for angles are arranged substantially above the blade body, and the support body is arranged behind the intermediate support body. To be done.

<Preferred Specific Example of the Invention> A specific example of a two-way blade device configured according to the present invention will be described below with reference to the accompanying drawings.

1 to 3, the illustrated blade device includes a blade body 2, an intermediate support 4 and a support body 6.

Support body 6 attached to the front end of earthmoving vehicle such as a loader
Is a pair of support plates 10a disposed laterally (front-to-back direction in FIG. 1 and in the left-right direction in FIGS. 2 and 3) on the front plate 8 and the rear surface of the front plate 8 at intervals. And 10b. Support plates 10a and 1
Hooks 12a and 12b are provided at the upper end of 0b, and a connecting hole 14 (only one of which is shown in FIG. 1) is formed at the lower ends of the support plates 10a and 10b. Also,
A connecting plate 16 is provided between the pair of support plates 10a and 10b.

The support body 6 as described above is attached to the hitch 18 attached to the front end of the earthmoving vehicle as shown in FIG. That is, the support body 6 has the upper engaging portion of the hitch 18 and the hook portions 12a and 12b.
And a connecting pin (not shown) is attached to the hitch 18 through the connecting hole 14 so as to be detachably attached to the hitch 18. Further, in the hitch 18, a boss portion 20 provided at a lower end portion of the hitch 18 is pivotally connected to a lift arm (not shown) via a pin, and a boss portion 22 provided at an intermediate portion thereof is provided via a pin. A tilt link (not shown) is pivotally connected.

The intermediate support 4 arranged on the front side of the support body 6 has a horizontal plate 24 and a vertical plate 26. The horizontal plate 24 extends forward substantially horizontally, and the vertical plate 26
Extends substantially vertically above the upper surface of the horizontal plate 24 at the rear end thereof. Between the front end of the horizontal plate 24 and the upper end of the vertical plate 26, an inclined reinforcing plate 28
Is provided.

The support body 6 and the intermediate support body 4 are rotatably connected via a first axis extending in the front-rear direction (the left-right direction in FIG. 1, the up-down direction in FIG. 2, the direction perpendicular to the paper surface in FIG. 3). Has been done. In the specific example, the front plate 8 of the support main body 6 is provided with the boss portion 30 substantially at the center thereof, and the vertical plate 26 of the intermediate support 4 is also provided with the boss portion 32 substantially at the center thereof. By mounting a pin 34 (having a first axis extending in the front-rear direction) penetrating these bosses 30 and 32, the support body 6 and the intermediate support 4 can be moved in the direction of the arrow.
It is mounted so as to be relatively rotatable in the directions indicated by 36 and 38 (Fig. 3). With respect to the fact that the support body 6 and the intermediate support body 4 are rotatable, the following configuration is further provided. That is, a pair of first receiving portions 40a and 40b are defined at the rear end portion of the vertical plate 26 of the intermediate support body 4. In the specific example, as shown in FIG. 4, the lower plate 42, the intermediate plate 44, and the upper plate 46 are attached to the rear surface of the front plate 26 in a stacked state using the mounting bolts 48, whereby the lower plate 42 and the upper plate 46 are attached. The receiving portion 40a (and 40b) is defined between them (in FIG. 4, the vicinity of the receiving portion 40a is shown). The width of the receiving portion 40a (and 40b), that is, the distance between the lower plate 42 and the upper plate 46, is defined by the intermediate plate 44 and the upper plate 46.
It is adjusted by changing the thickness of the shim 50 that is interposed between. The receiving portions 40a and 40b are opened inward (the receiving portion 40a has a right surface in FIG.
0b, the left side is open in FIG. 3), and the bottoms thereof extend in an arc shape in the vertical direction (see FIG. 3). On the other hand, both ends of the front plate 8 of the support body 6 are formed in an arc shape corresponding to the bottom shapes of the receiving portions 40a and 40b, and both end portions of the front plate 8 are the receiving portions 40a and 4b.
It is slidably received in 0b. In the concrete example, the vertical plate 26 of the intermediate support 4 is provided with a pair of receiving portions 40a and 40b so that both end portions of the front plate 8 of the supporting body 6 are provided with these receiving portions 40a and 40b.
Although located in a and 40b, on the contrary, a pair of receiving parts is provided on the front surface of the front plate 8 of the supporting body 6, and both ends of the vertical plate 26 of the intermediate support 4 are positioned in the receiving parts. You may do it.

A tilting fluid pressure cylinder mechanism 52 (not shown in FIG. 2) is interposed between the support body 6 and the intermediate support body 4. In the specific example, the front plate 8 of the support body 6
A mounting plate 54 projecting forward is provided at the upper right end of the vertical plate 26 of the intermediate support 4, and a mounting plate 56 projecting forward is also provided at the upper left end of the vertical plate 26 of the intermediate support 4. Pair of brackets on the upper surface of the
The head side (that is, the cylinder) of the fluid pressure cylinder mechanism 52 is rotatably coupled to the 58 through a pin, and the fluid pressure cylinder mechanism is also coupled through a pin to a pair of brackets 60 provided on the upper surface of the other mounting plate 56. The rod side (that is, the output rod) of is connected so as to be freely rotatable. As it is, the tilting fluid pressure cylinder mechanism 52 is extended (or expanded or contracted).
When the intermediate support 4 is moved toward the support main body 6, the arrow 36
(Or 38) is turned.

Further, the illustrated blade main body 2 has a front board 62 that defines a concave curved front surface suitable for performing a pushing operation and the like, and a rear board 64 that defines a concave curved rear surface suitable for performing a pulling operation. is doing. The upper ends of the front board 62 and the rear board 64 are connected to each other via an upper connection plate 66, and a cutting edge 68 is formed between the lower ends of the front board 62 and the rear board 64.
Are fixed, and side plates 70 (only one of which is shown in FIGS. 1 and 3) are provided at both ends of the front board 62 and the rear board 64.

The intermediate support 4 and the blade body 2 are pivotally connected to each other via a second axis extending in the vertical direction. In the specific example, a boss 72 is provided at the substantially central portion of the horizontal plate 24 of the intermediate support 4. Further, a concave portion 74 is provided at the center of the blade body 2 in the lateral direction, and the upper surface of the concave portion 74 is inclined downward toward the rear. Recess 74
Further, an upper plate 76 is disposed above, and the upper plate 76 extends rearward substantially horizontally from one end connected to the upper connecting plate 66, and the other end is bent downward. It is fixed to the bottom surface of the recess 74 (see FIG. 1). Then, the blade body 2 is fitted with a pin 78 (having a second axis line extending in the vertical direction) penetrating the boss portion 72 and the upper plate 76, so that the arrows 80 and 82 (second portion) are attached to the intermediate support body 4. It is connected so as to be relatively rotatable in the direction shown in FIG. With respect to the fact that the intermediate support body 4 and the blade body 2 are rotatable, the following construction is further provided. That is, a pair of second receiving portions 84a and 84b are defined at both ends of the upper surface of the blade body 2. In a specific example, as shown in FIG. 5, a lower plate 86, an intermediate plate 88 and an upper plate 90 are provided on the upper surface of the upper connection plate 66 of the blade body 2.
The mounting portions 84a (and 84b) are defined between the lower plate 86 and the upper plate 90 by mounting them in the stacked state using the mounting bolts 92 (in FIG. 5, the receiving portion 84a).
Only the neighborhood of). The width of the receiving portion 84a (and 84b), that is, the distance between the lower plate 86 and the upper plate 90 is adjusted by changing the thickness of the shim 94 interposed between the intermediate plate 88 and the upper plate 90. The receiving portions 84a and 84b are open inward (the receiving portion 84a has a right surface in FIG. 2 and the receiving portion 84b has a left surface in FIG. 2), and their bottom surfaces Extends arcuately in the front-back direction (see FIG. 2). On the other hand, the horizontal plate 24 of the intermediate support 4
Both end portions of the vertical plate 26 project to both sides from both ends of the vertical plate 26, and the both end portions are slidably received by the receiving portions 84a and 84b (in this connection, the horizontal plate 24
Both ends are formed in an arc shape corresponding to the bottom shape of the receiving portions 84a and 84b). In the specific example, a pair of receiving portions 84a and 84b are provided on the upper surface of the blade body 2 to form the intermediate support 4
Both ends of the horizontal plate 24 are positioned in the receiving portions 84a and 84b. On the contrary, a pair of receiving portions are provided on the lower surface of the horizontal plate 24 of the intermediate support 4 and the blades are provided in the receiving portions. You may make it position a part of main body.

A pair of angle fluid pressure cylinder mechanisms 96a and 96b (not shown in FIG. 3) are interposed between the intermediate support 4 and the blade body 2. In the specific example, one angle fluid pressure cylinder mechanism 96a is arranged on the left side of the intermediate support 4, and the other angle fluid pressure cylinder mechanism 96b is arranged on the right side of the intermediate support 4.
That is, a pair of brackets are attached to the lower left end of the vertical plate 26.
98 is provided, and a pair of brackets 102 is provided on the upright wall 100 fixed to the upper plate 76 of the blade main body 2. The head side (that is, the cylinder) of the fluid pressure cylinder mechanism 96a is provided with the pair of brackets 98. Is pivotally connected via a pin, and the rod side (that is, the output rod) of the fluid pressure cylinder mechanism 96a is pivotally connected to the pair of brackets 102 via a pin. Further, a pair of mounting brackets 104 is provided on the lower right end of the vertical plate 26, and a pair of mounting brackets 106 is provided on the upright wall 100 of the blade body 4, and the head of the other fluid pressure cylinder mechanism 96b is provided. The side is rotatably connected to a pair of brackets 104 via pins, and the fluid pressure cylinder mechanism 96
The rod side of b is pivotally connected to the pair of brackets 106 via pins. As this is the case, the fluid pressure cylinder mechanism 96a for one angle is extended (or contracted).
Fluid pressure cylinder mechanism for the other angle 96
When b is expanded or contracted (or expanded), the blade 2 is swung in the direction indicated by the arrow 80 (or 82) with respect to the intermediate support 4.

Next, the function and effect of the above blade device will be described.

In order to turn the blade body 2 to the right (or to the left), the fluid pressure cylinder mechanism 96a may be expanded (or contracted) and the other fluid pressure cylinder mechanism 96b may be contracted (or expanded). Thus, as can be understood from FIG. 2, the blade body 2 is attached to the pin 78 with respect to the intermediate support 4.
Arrow 80 centered on (the second axis extending in the vertical direction)
(Or 82) is swung, and thus the blade body 2 is swung right (or left) as required. At the time of such turning, as understood from FIGS. 2 and 5, both ends of the horizontal plate 24 of the intermediate support 4 relatively move within the pair of receiving portions 84a and 84b defined in the blade body 2. Moving.

Further, in order to tilt the blade body 2, the fluid pressure cylinder mechanism 52 for tilting may be expanded (or contracted). Thus, as can be understood from FIG. 3, the intermediate support 4 (and the blade body 2 integrally therewith) with respect to the support body 6 has the pin 34 (constituting the first axis extending in the front-rear direction) as the center. Is swung in the direction indicated by the arrow 36 (or 38), and thus the blade body 2 is tilted integrally with the intermediate support body 4 in the counterclockwise direction (or clockwise direction) in FIG.

As described above, the blade device is provided with the tilt mechanism in addition to the angle mechanism, and therefore can be conveniently used for cargo handling work onboard a ship.

The blade device also has the following features. That is, as understood from FIG. 1, the blade body 2
An intermediate support body 4 is disposed above (the blade body 2 and the intermediate support body 4 are pivotally connected about a second axis extending in the up-and-down direction to enable such an arrangement). 4, a support body 6 is arranged behind the 4 (which can be arranged by pivotally connecting the intermediate support 4 and the support body 6 about a first axis extending in the front-rear direction), Therefore, substantially the entire front surface and the rear surface of the blade main body 2 act as a work surface, and when moving the processed object, the same amount of holding as the conventional one is secured.

The specific example of the two-way blade device configured according to the present invention has been described above, but the present invention is not limited to the specific example, and various modifications and corrections can be made without departing from the scope of the present invention. Is.

For example, in the illustrated specific example, the support body of the blade device is detachably attached to the hitch attached to the front end of the earthmoving vehicle, but is not limited to this.
The support body is directly attached to the front end of the earthmoving vehicle (attached to the lift arm and the tilt link), and can be similarly applied.

<Effects of the Invention> (1) Since the two-way blade device according to the present invention includes the tilt mechanism in addition to the angle mechanism,
The scraping work can be performed as desired without relying on human power. Therefore, the inboard cargo handling work including scraping work, scraping work, pushing work and pulling work,
It is mechanically efficient and can be performed as desired.

(2) In the two-way blade device according to the present invention, the intermediate support, the tilt fluid pressure cylinder mechanism, and the pair of angle fluid pressure cylinder mechanisms are disposed substantially above the blade body, and the support body is behind the intermediate support body. Since the blade main body is disposed in the above, substantially the entire area of the front surface and the rear surface of the blade main body can be used as a work surface, so that a sufficient processing function is ensured. That is, when the processed material is moved, the same amount of holding as the conventional one is secured. Further, due to the above configuration, the overall configuration is compact. Further, the two-way blade device according to the present invention is completed as one unit (assembly) in advance, and can be mounted on the vehicle side as it is, so that it is remarkably excellent in the mountability on the vehicle side. Further, due to the above-mentioned configuration, the support body can be connected to the vehicle side by connecting the support body via the hitch or directly to the lift arm and the tilt link, so that it is easy to tilt the blade body forward and backward. is there. Therefore, in addition to the angle function and the tilt function, the forward tilt function and the backward tilt function can be easily obtained, so that the overall function is further improved.

[Brief description of drawings]

FIG. 1 is a side view showing a specific example of a two-way blade device configured according to the present invention. FIG. 2 is a plan view showing a main part of the two-way blade device shown in FIG. FIG. 3 is a rear view showing a main part of the two-way blade device shown in FIG. FIG. 4 is a sectional view taken along the line IV-IV in FIG. FIG. 5 is a sectional view taken along the line VV in FIG. 2 …… Blade body 4 …… Intermediate support 6 …… Support body 8 …… Front plate 24 …… Horizontal plate 26 …… Vertical plate 34 …… Pin (first axis) 52 …… Tilt hydraulic cylinder mechanism 62 …… Front board 64 …… Rear board 78 …… Pin (second axis) 96a and 96b …… Fluid pressure cylinder mechanism for angle

Claims (4)

[Claims] 1. A support body mounted on a front end of an earthmoving vehicle,
The intermediate support includes an intermediate support body rotatably connected to the support body about a first axis extending in the front-rear direction, a front board defining a curved front surface and a rear board defining a curved rear surface, and the intermediate support body. A blade main body that is pivotally connected about a second axis extending in the up-and-down direction, and is interposed between the support main body and the intermediate support, and the intermediate support and the blade with respect to the support main body. A tilting fluid pressure cylinder mechanism for turning the main body about the first axis;
A pair of angle fluid pressure cylinder mechanisms interposed between the intermediate support and the blade main body and for rotating the blade main body about the second axis with respect to the intermediate support; The support, the tilt fluid pressure cylinder mechanism, and the pair of angle fluid pressure cylinder mechanisms are disposed substantially above the blade body, and the support body is disposed behind the intermediate support body. Two-way blade device. 2. The support body includes a substantially vertically extending front plate and a pair of support plates laterally spaced on a rear surface of the front plate and connected to a front end of the earthmoving vehicle. The intermediate support has a horizontal plate and a vertical plate extending substantially vertically upward from the rear end of the horizontal plate, and the blade body connects the upper ends of the front board and the rear board. An upper connection plate, a recess provided in the lateral center of the upper connection plate, and a rear surface extending substantially horizontally rearward from one end connected to the upper connection plate and the other end bent downward to form a bottom surface of the recess. A front plate of the support body and the vertical plate of the intermediate support are pivotally connected via a first pin having the first axis to the intermediate plate. The horizontal plate of the support Two-way blade assembly of the upper plate of the blade body which is pivotally connected via a second pin having an axis of the second, wherein the first term claims. 3. A pair of first receiving portions is defined on a rear surface of the vertical plate of the intermediate support, and both end portions of the front plate of the support body are slidable on the pair of first receiving portions. A two-way blade device as claimed in claim 2, which is accepted by US Pat. 4. A pair of second receiving portions is defined on an upper surface of the upper connecting plate of the blade body, and both end portions of the horizontal plate of the intermediate supporting body slide on the pair of second receiving portions. The two-way blade device according to claim 2 or 3, which is freely received.