JPH0378457B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a self-propelled construction vehicle or machine such as a tractor shovel or wheel loader equipped with a bucket, in which the bucket is tilted in the left and right direction in a trapezoidal shape, and the front surface of the bucket is tilted in the left and right direction. This relates to a tilt bucket cart with a clamp that opens and closes with a clamp.

[Prior Art] In the conventional bucket type construction machine, the front opening of the bucket has a rectangular shape, and therefore, as shown in FIG. The parts were at right angles. Also, the tilt direction is determined by bucket tilt 1 as shown in Figure 2B.
It was only possible to rotate the tilt back or tilt forward in the A direction back and forth. Therefore, cleaning of the corners of mountain cuts at civil engineering sites, stone collection sites, and slag storage areas at steel plants could only be carried out at right-angled areas, as shown in Figure 1A.

[Problems to be Solved by the Invention] However, even if the cut is made on the mountain side as shown in FIG. 1A, if the corners of the bucket are at right angles, the entire side plates 2 will come into contact with each other, resulting in damage to the bucket.

In addition, at a steelworks, red-hot slag dumped by slag transport vehicles is temporarily stored in a slag (slag) storage area set up around the track of the vehicle, and then transported to other slag processing plants by construction vehicles. Construction vehicles are often used. Furthermore, when transporting from the blast furnace to the converter using a torpedo car, the torpedo car is used to remove the slag, so the slag flows out near the railroad tracks during transport and becomes solid metal. In addition, obstacles around the railroad tracks,
There are buildings, pillars, etc. Therefore, when a relatively large lump of slag or metal is stripped from a hearth, etc., crushed and shipped, or when an inclined groove G is provided in the corner as shown in Fig. 1B. In this case, a regular type of bucket as shown in Fig. 1A cannot be used for processing work in such places.

Another disadvantage was that it could not handle red-hot large lumps of slag that could not fit into the bucket.

The present invention has been made in view of the above-mentioned circumstances.

[Means for Solving the Problems] The present invention provides a construction or earthwork vehicle equipped with a lift arm and a tilt linkage, which are operating means for a bucket, in which a pair of brackets that pivot the operating means via a hinge pin are fixed. The support plate consists of a bucket rotating means consisting of a shaft with a bearing and a spacer interposed in the central part of the support plate, and arc-shaped arc-shaped parts arranged opposite to each other at symmetrical positions of vertical extensions and left and right extensions around the rotation means. a sliding portion; and a second tilt cylinder attached to a bracket formed on a shoulder provided on one side of the support plate; The bucket mounting plate constituting the reinforcing structure pivots the shaft of the rotation means in the center, so that the bucket mounting plate rotates in the left and right direction of the bucket with respect to the support plate. The basket mounting plate is provided with a slide member that is removably disposed oppositely via a locking means at a corresponding position that contacts the arcuate sliding portion that is disposed oppositely on the support plate, By forming the bracket of the tilt cylinder at the upper part of the upper center of the basket mounting plate, the bucket can be tilted in the left-right direction about the rotating means by operating the second tilt cylinder. Furthermore, a pair of clamp cylinders are pivotally supported via a bracket provided either on the bucket mounting plate or at the rear of the bucket, and a bracket is provided at the piston rod end of the clamp cylinder above the opening of the bucket. By rotatably providing the upper extension ends of a pair of clamps that are rotatably provided by a pivot pin, it is possible to open and close the clamps around the pivot pin by operating the clamps. The present invention provides a tilt bucket cart with a clamp.

[Function] The load applied to the bucket (the load of the bucket or the pressing force during loading work) is distributed not only to the rotating means but also to four sliding members arranged vertically and horizontally. Further, since the load applied perpendicularly to the rotation axis due to the rotational movement of the bucket is distributed to the slide member, the rotation of the bucket by the second tilt cylinder is facilitated.

Also, large lumps that cannot fit into the bucket can be transported by being held between the bottom plate of the bucket and the clamp.

[Examples] Hereinafter, the present invention will be described in detail based on illustrated examples.

Figures 2A and 2B are a front view and a side view of a wheel loader equipped with an embodiment of a tilting bucket with a clamp according to the present invention, and Figure 3 is a front view and a side view of a wheel loader equipped with a tilting bucket with a clamp according to an embodiment of the present invention. FIG. 4 is a longitudinal cross-sectional view of a tilt bucket with a clamp showing one embodiment of the present invention, a cross-sectional view taken along the - line in FIG. 3, and FIG. 5 is another embodiment of the present invention. FIG. 6 is a longitudinal cross-sectional view of a tilt bucket with clamp, showing another embodiment of the present invention, and FIG. FIG. 7 is a partial side view showing the relationship between the stoppers provided opposite to the support plate.

Taking a wheel loader as an example, in a conventional wheel loader, the tilt lever and the tip of the lift arm are directly supported by pins on a bracket that is integrally welded to the bucket. to tilt the bucket tote in the front and rear directions (direction A in Figure 2), and to lift the bucket to the top and bottom by operating the lift arm using a lift cylinder attached to the vehicle body (Figure 2). Therefore, it was only possible to carry out excavation and loading work in two movements (direction B).
However, in the present invention, in addition to the above-mentioned normal operation of the bucket cart, a second tilting operation is added to tilt the bucket cart 1 in the left-right direction as shown by the arrow C in FIG. A clamp 40 that opens and closes on the front surface of the opening 3 of the bucket 1 is provided. The bucket tote of the present invention has a pin at the tip of the tilt lever of the loader and a pin at the tip of the lift arm, that is, the hinge pin 8a explained in FIG.
It can be replaced by simply replacing 6a.

As shown in FIG. 2A, FIG. 3, and FIG. 5, the bucket bag 1 has a front opening 3 shaped like a trapezoid.
Both ends of the bottom surface 4 in contact with the ground are configured to form acute angles with the side plates 2.

As shown in FIG. 4, the bucket mounting plate 24 forms a rear structure of the bucket through ribs 31, but in reality it is a strong structure with long channel members and other rib materials (not shown). .

As shown in FIG. 4, the bucket mounting plate 24 forms a rear structure of the bucket through ribs 31, but in reality, it is a strong structure using a long channel member and other rib materials (not shown).

This bucket mounting plate 24 includes a support plate 10 (described later) having a bracket 11 that pivotally supports a lift arm 6 and a tilt lever 8, which are bucket operating means and are in contact with the plate back to back.
The rotating shaft 16 of the rotating means 15 provided in the center of
is pivotally supported in the center, so the support plate 10
It is designed to be able to rotate around the rotation means 15 with respect to the rotation means 15. A bracket 12a on the rod end side is provided above the center of the position where the rotating shaft 16 is inserted to perform the second tilting operation.

As shown in FIGS. 3 and 4, the rotating means 1
Arc-shaped slide members 26 and 29 are provided opposite to each other at symmetrical positions in the vertical direction and the left and right extension portions of 5, respectively. The slide members 26, 29 are provided with a slide presser plate 27 which is wide and extends inwardly from the arc of each slide member 26, 29. Slide members 26 and 29 are presser plates 2
It is fixed to the mounting plate 24 via bolts 28 so that it can be attached and detached together with 7.

Although the support plate 10 shown in FIG. 4 is simply shown as a single plate, it is actually constructed of a box-type housing frame made up of two plates with a plurality of ribs interposed therebetween. This support plate 10 is a plate having a poly-arc curved surface, and has a central opening 20.
A rotating means 15 is constituted by a bearing 17, a spacer 18, a rotating shaft 16 inserted from the bucket mounting plate 24 side, and a cover plate 16a. The rotating shaft 16 is firmly fixed to the support plate 10 using a conventional nut or the like.

This rotating means 15 can be connected to the support plate 10 by a through-bolt type or by a cylindrical shaft (not shown).
The bucket mounting plate 24 may be rotated, and the bearing 17 may be a ball bearing,
roller bearing, tapered roller bearing,
Alternatively, it may be a combination of the above bearing and a slide bearing.

As shown in FIG. 3, the support plate 10 is provided with the aforementioned slide members 26 and 2 at symmetrical positions on the vertical and horizontal extensions with the rotation means 15 as the center.
Arc-shaped reinforcing pieces 13a and 14 that slide on the arc surface of 9
Arc sliding parts 13 and 14 are provided to which a is fixed. The arcuate sliding portions 13 and 14 are prevented from coming off the sliding surface by the holding plates 27 of the slide members 26 and 29.

As shown in FIGS. 3 and 4, a tilt lever 8 and a lift arm 6 are provided at the rear of the support plate 10.
Integral brackets 11 are provided on the left and right sides for pivotally supporting the extended ends of the brackets. Reference numerals 6a and 8a are hinge pins of the lift arm 6 and tilt lever 8, respectively.

Furthermore, a cap end bracket 12 is formed on one shoulder of the support plate 10 to which a second tilt cylinder 22 is attached. The rod extension of the second tilt cylinder 22 is pivotally supported by the bracket 12a of the mounting plate 24 mentioned above.

When the second tilt cylinder 22 is in a neutral state, the bucket belt 1 maintains a horizontal state, and when it is in an extended state, it rotates to the right, and when it is in a shortened state, it rotates to the left.

As shown in FIG. 7, it is preferable to form stoppers 23 and 32 at one end of the arcuate sliding portion 14 between the bucket mounting plate 24 and the support plate 10 to prevent excessive rotation of the bucket.

The present invention adds a structure in which a clamp is opened and closed in front of the opening of the bucket 1 to the above-described configuration in which the bucket 1 is tilted in the left-right direction.

As shown in FIG. 4, a clamp cylinder 3 is attached to the bucket mounting plate 24 via a bracket 37.
A pair of piston rods 35a of the clamp cylinder 34 are rotatably supported by a pin 38 at the base end 36 of the clamp 40.
is pivotally supported by a pin 41 on a bracket 39 fixed to the upper edge of the opening of the bucket 1 by welding, and is opened and closed in the direction of arrow D with the pin 41 in view by operating the cylinder 34 and expanding and contracting the piston rod 35a. .

Another embodiment of the present invention is shown in FIGS. 5 and 6, in which, instead of attaching the clamp cylinder 34 to the bucket mounting plate 24 in the first embodiment,
The pair of clamp cylinders 34 are pivotally supported by a bracket 37 fixed to the rear of the bucket 1, and the other configurations are the same as in the previous embodiment.

The arrangement of the clamp 40 is as described above.
In addition to placing them on both sides, there is also one bucket in the center.
It is also possible to arrange only one piece, or three pieces on both sides and in the center of bucket bag 1.

The second tilt cylinder 22 and clamp cylinder 34 are incorporated into the same hydraulic system that operates the tilt cylinder 9 and lift cylinder 7 shown in FIG. It will be done.

To operate the bucket with clamp of the present invention having the above-described structure, when the operator in the driver's seat operates the operating lever of the second tilt cylinder 22,
The piston rod of the second tilt cylinder 22 expands and contracts to rotate the bucket seat mounting plate 24 left and right around the center rotation axis, so the bucket seat 1 moves from the solid line position to the chain line position as shown in FIG. It rotates like this. When the operator operates the operation lever (not shown) of the clamp cylinder 34, the piston rod 35 of the clamp cylinder 34
a expands and contracts and rotates around the pivot pin 41,
Clamp 40 is opened and closed in the direction of arrow D. As described above, according to the present invention, as shown in FIG. 2, in addition to the normal operations of the bucket 1, such as the lift operation in the B direction and the tilt operation in the A direction, the bucket 1 can be tilted in the C direction and the clamp 40 can be tilted in the D direction. It is possible to perform opening and closing operations in different directions.

[Effects of the Invention] As explained in detail above, according to the bucket truck with a clamp of the present invention, the trapezoidal bucket truck attached to the tip of the lift arm can be easily tilted left and right from the driver's seat using the tilt cylinder. It is easy to excavate the corners of the site, and is especially useful for cleaning grooves that are inclined to the left or right, and for crushing and excavating near obstacles in the corners of slag storage areas in steel plants that are perpendicular to the flow direction. This has the effect of making loading work more efficient by combining it with the conventional bucket operation, and it also allows the large lumps of red-hot slag to be pulled out and disposed of by the clamping action, so it is possible to handle the large lumps of slag using the rope instead of the conventional method described above. Dangerous work such as hanging and pulling out is no longer necessary.
It can prevent the dangers of high-temperature work, and
Work efficiency is improved by pressing the large lump of slag that has been scooped in with a clamp to prevent it from flying out. Furthermore, the basket with clamp of the present invention has the advantage that it can be easily replaced by simply replacing the tilt lever and the pin at the end of the lift arm, as in the conventional one.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram comparing the opening corners of a conventional bucket tote and the bucket tot of the present invention, and Fig. 2A is a front view of a wheel loader equipped with an embodiment of the bucket tot with a clamp of the present invention. , b is the same side view,
FIG. 3 is a rear view showing the relationship between the bucket belt mounting plate to which the bucket belt is fixed and the support plate, showing one embodiment of the present invention, and FIG. 4 is a longitudinal sectional view of the bucket belt with a clamp, showing one embodiment of the present invention. 3 is a sectional view taken along the line 3, FIG. 5 is an explanatory diagram of the relationship between a bucket mounting plate and a support plate to which a bucket is fixed, showing another embodiment of the present invention, and FIG. 6 is a diagram showing another embodiment of the present invention. FIG. 7 is a longitudinal cross-sectional view of a bucket with a clamp showing an example, and a partial side view showing the relationship between a bucket mounting plate and a stopper disposed opposite to a support plate. W...Construction vehicle, G...Ditch, 1...Bucket,
6... Lift arm, 8... Tilt lever, 10
...Support plate, 13, 14...Circular sliding part,
15... Rotating means, 20... Central opening, 22...
...Second tilt cylinder, 24...Bucket mounting plate, 26...Slide member, 23, 32
...Stopper, 34...Clamp cylinder, 4
0...Clamp.

Claims (1)

[Scope of Claims] 1. In a construction or earthwork vehicle equipped with a lift arm and a tilt linkage that are operating means for a bucket, a support plate to which a pair of brackets that pivot the operating means via a hinge pin are fixed is defined as a support plate. A rotating means of a bucket consisting of a shaft body with a bearing and a spacer interposed in the central part of the bucket, and arc-shaped sliding parts disposed opposite to each other at symmetrical positions of the vertical extension part and the left and right extension part with the rotation means as the center; a second tilt cylinder attached to a bracket formed on a shoulder provided on one side of the support plate; and a bucket belt that contacts the front surface of the support plate and constitutes a reinforcing structure for the back surface of the bucket via ribs. The mounting plate pivotally supports the shaft of the rotating means in the center, thereby allowing the bucket mounting plate to freely rotate along with the bucket in the left and right direction of the bucket with respect to the support plate, The bucket mounting plate is provided with sliding members that are removably disposed opposite to each other via locking means at corresponding positions that contact the arcuate sliding portions that are opposed to each other on the support plate, and the bracket of the second tilt cylinder is attached to the bucket mounting plate. By forming the bucket at the upper center of the mounting plate, by operating the second tilt cylinder, the bucket can be tilted in the left and right direction around the rotation means, and the bucket can be tilted in the left and right direction around the rotating means. A pair of clamp cylinders are pivotally supported via a bracket disposed at one of the positions, and the piston rod end of the clamp cylinder is rotated by a pivot pin of the bracket provided above the opening of the bucket. A tilt bucket with a clamp, characterized in that the upper extension ends of a pair of freely provided clamps are rotatably provided, and the clamps are opened and closed about the pivot pin by operating the clamp cylinder. . 2. The tilt bucket cart with a clamp according to claim 1, wherein the opening of the bucket cart is configured to have a trapezoidal shape. 3. The tilt bucket cart with a clamp according to claim 1, further comprising stoppers arranged opposite to each other on the rotation surfaces of the bucket mounting plate and the support plate according to claim 1. 4. Claim 1, in which a reinforcing sliding piece is fixed to the arcuate sliding part provided opposite to the support plate of claim 1.
Tilt bucket with clamp as described in section. 5. Claim 1, wherein the support plate according to claim 1 is formed of a housing composed of a plurality of ribs or more, and the support plate has a poly-arc curved surface. Tilt bucket with clamp as described in section.