JPH1088607A - Variable capacity bucket device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arbitrarily vary bucket capacity by a method wherein bucket capacity set by a bucket body and an inner bucket is varied by revolving the inner bucket. SOLUTION: When through extension and retraction of a hydraulic cylinder 8 operated by a manually-operated valve 78, an inner bucket 6 is revolved within a bucket body 4, a displacement detecting means 52 of a capacity detecting means 50 detects a relative position between the body 4 and the inner bucket 6 as angular displacement and outputs a detecting result to a capacity computing means 56. The computing means 56 computes bucket capacity and outputs a computing result to a capacity display means 56. The capacity is displayed by a display means 56. Further, a capacity command means 72 converts the position of the inner bucket 6 to the body 4 into revolution angle displacement, which is outputted to an actuator control means 74. The control means 74 retracts the cylinder 8 through an actuator operating means 76 so that an actually detecting angular displacement is adjusted to commanded angular displacement. This constitution varies capacity to an arbitrary value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bucket device mounted on a loading machine or the like, and more particularly, to a bucket device capable of freely changing the capacity of a bucket.

[0002]

2. Description of the Related Art Wheel loaders, hydraulic shovels, and the like, which are typical loading machines having buckets, operate the position and movement of the bucket to scoop objects to be loaded, such as gravel and sand, into the bucket. In a facility such as a plant, operations such as loading into a hopper are performed. The bucket mounted on the wheel loader, the hydraulic shovel and the like has a bucket body plate having a U-shaped cross section and a pair of side plates closing both sides of the body plate, and a volume set by these plates, The bucket capacity is uniquely determined.

[0003] The procedure of a general loading operation will be described by taking as an example an operation of loading sand on a bed of a dump truck. (1) A loading machine is operated to put a U-shaped bucket on a pile of stocked sand. Thrust it at the opening. (2) The U-shaped opening of the bucket is caused to be upward. This causes the bucket to be scooped up with a heap of sand. (3) The bucket is approached to the dump truck, and the bucket is tilted forward to the bed of the dump truck to discharge sand. (4) The above operation is repeated until a desired amount is loaded. (5) The total amount loaded can be confirmed by the number of times of loading since the capacity of one bucket heap can be confirmed in advance by calculation or measurement. (6) However, in normal multiple loading, the bucket is not always loaded with a full amount, but a small amount is added and loaded so as to replenish the insufficient loading amount, or a large excess amount is loaded in advance. Adjustments such as loading and unloading are appropriately performed. Therefore, to know the loading amount more accurately, measure the weight of the dump truck when it is empty before loading the sand, weigh the truck again after loading the sand, and calculate the amount loaded from the difference. In order to find the exact amount of a single load that has been scooped into the bucket, measure the weight of the loading machine with the empty bucket and the weight of the loading machine with the sand loaded in the bucket. Then, a loading amount for one bucket is calculated from the difference, and a method of obtaining the entire loading amount is used.

[0004] In the loading operation, properly knowing the loading amount is necessary, for example, in order to prevent the dumping truck from exceeding the loading weight when traveling on a public road having a maximum loading weight limitation, and also to load the loading unit. This is important, for example, in order to trade at a price per capacity, or in order to properly mix the raw materials in a plant that produces concrete.

In the loading operation, a bucket having a capacity as large as possible is used in order to improve the efficiency of the operation, and the number of loading operations is reduced as much as possible. However, the size of the carrier such as a dump truck varies, and the required loading amount also varies depending on the operation. For this reason, in the loading operation, a bucket with a large capacity or a bucket with a small capacity is prepared as appropriate so that the full amount of the bucket is always loaded and the total amount can be simply calculated from the number of loadings. They are exchanged and mounted on a loading machine in accordance with the loading operation.

[0006]

The problems associated with the conventional bucket described above are summarized as follows. (1) In order to check the loading amount in the bucket, extra work such as measuring the weight of the loading machine, adjusting the loading amount, or using a bucket with the capacity corresponding to the work is necessary. And the loading operation is troublesome and costly. (2) Large-scale weight measuring equipment for measuring the weight of a loading machine, a dump truck and the like is required. (3) In order to prepare and exchange various buckets with fixed capacities, various buckets must be prepared and stored. And the work of replacing the bucket is not easy.

[0007] The present invention has been made in view of the above facts, and its technical problems are (1) the bucket capacity, that is, the capacity of the bucket can be arbitrarily changed, and (2) the changed bucket capacity is known. And (3) to provide a variable capacity bucket device capable of changing the bucket capacity to a desired value.

[0008]

According to the present invention, in order to solve the above-mentioned technical problems, a bucket device is provided by: (1) mounting an inner bucket in a bucket body and changing a position of the inner bucket by an actuator; And the bucket capacity is changed by changing the position of the inner bucket. (2) The position of the inner bucket with respect to the bucket body is detected, the bucket capacity at that position is calculated, and the calculated bucket capacity is displayed. (3) When a desired bucket capacity is commanded, the actuator is operated, the position of the inner bucket is changed, and the bucket capacity is changed to the commanded value.

That is, according to the present invention, as a variable capacity bucket device for solving the above technical problem, a bucket body, an inner bucket rotatably mounted in the bucket body, and an actuator for rotating the inner bucket. And a bucket capacity set by the bucket main body and the inner bucket is changed by turning the inner bucket, thereby providing a variable capacity bucket apparatus.

In a preferred embodiment, the bucket device includes a capacity detecting means, the capacity detecting means detecting a relative turning displacement between the bucket body and the inner bucket, and the displacement detecting means. A capacity calculating means for calculating a bucket capacity based on a signal from the means; and a capacity displaying means for displaying the calculated bucket capacity. In another embodiment, the bucket device includes a capacity setting means, the capacity setting means configured to command a bucket capacity by a relative turning displacement between the bucket body and the inner bucket; A displacement detecting means for detecting a relative turning displacement between the actuator and the inner bucket; an actuator operating means for operating the actuator; and controlling the actuator operating means so that the detected turning displacement becomes the commanded turning displacement. Actuator control means for outputting a signal. In still another embodiment, the bucket device includes indicator means for visually confirming a relative turning displacement between the bucket body and the inner bucket.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a variable capacity bucket device constructed according to the present invention will be described below in more detail with reference to the accompanying drawings.

Referring to FIG.
The variable-capacity bucket device includes a variable-capacity bucket 3, the variable-capacity bucket 3 includes a bucket body 4, an inner bucket 6 rotatably mounted in the bucket body 4,
A hydraulic cylinder 8 is provided, one end of which is attached to the bucket body 4 and the other end of which is attached to the inner bucket 6. The variable-capacity bucket device 2 further includes a capacity detection unit 50 for detecting a bucket capacity set by the bucket body 4 and the inner bucket 6. The capacity detecting means 50 includes a displacement detecting means 52, a capacity calculating means 54, and a capacity displaying means 56. The variable capacity bucket device 2 also includes a capacity setting means 70, and when the bucket capacity is commanded, the position of the inner bucket 6 with respect to the bucket body 4 is controlled such that the commanded bucket capacity is obtained. Capacity setting means 70
Are capacity commanding means 72, displacement detecting means 52, actuator controlling means 74, actuator operating means 76
And

The variable capacity bucket 3 will be further described with reference to FIGS. 2 and 3. The variable capacity bucket 3 has a U-shaped cross section in the right and left width direction (in FIG. The container-like bucket extends in a direction perpendicular to the horizontal direction (left-right direction in FIG. 3) and is closed at both ends. An object to be loaded is scooped from an opening having a U-shaped cross section located in front of the variable capacity bucket 3 in the front-rear direction (right side in FIG. 2, left side in FIG. 2). Two hydraulic cylinders 8 are mounted on the left and right, respectively, on the rear side, which is the rear side in the front-rear direction, two in total.

Referring to FIGS. 4 and 5 together with FIGS. 2 and 3, the bucket body 4 is formed integrally by welding various steel members to each other. The bucket body 4 includes a pair of side plates 10 and 12 spaced apart in the left-right width direction (the left-right direction in FIG. 4), and the bucket body 4 is disposed between the pair of side plates 10 and 12 in the left-right width direction. Three connecting members 16, 18, 2, each of which has a channel-shaped or angle-shaped cross section extending vertically and spaced apart in the vertical direction.
0, and an inner plate 1 fixed to these connecting members 16, 18, 20 to form an inner surface of the bucket in a U-shape indicated by a two-dot chain line 4 a in a cross section perpendicular to the left-right width direction.
7, 19, and 21. The lower part of the bucket body 4 further includes a lowermost connecting member 20 and a pair of side plates 1.
Bottom plate 22 for closing the space between 0, 12 and the inner plate 21 is provided. A cutting edge 14 serving as a cutting blade is provided over the entire width of the bucket body 4 in the left-right direction at the tip of the inner plate 21 that is the front end of the bucket body 4. At the upper left and right ends of the bucket body 4, mounting holes 10d, 10c and 12d, 12c are provided at the upper ends of the side plates 10, 12, respectively. On the upper surface of the connecting member 16, the bracket member 11 is adjacent to the side plate 10 and is laterally spaced.
A bracket member 13 is disposed adjacent to the side plate 12 and spaced apart in the lateral direction. Each of the bracket members 11, 13 has a mounting hole substantially coaxial with the mounting holes 10c, 12c. 11a and 13a are provided respectively.

On the back side (left side in FIG. 4) of the bucket body 4, three sets of connecting brackets 34, 36, 38 are provided so as to straddle the connecting members 16, 18, 20 and are fixed thereto. The connection bracket 34 located in the middle is
The pair of bracket members 34a and 34b are arranged at the center in the left-right direction of the bucket body 4, and the pair of bracket members 34a and 34b are provided with mounting holes 34c penetrating through the same central axis in the left-right direction. Connection brackets 36, 38 located on both sides of the connection bracket 34
Is composed of a pair of bracket members 36a, 36b and 38a, 38b, respectively,
And a pair of bracket members 36a, 36b and 38a, 38b are provided with mounting holes 36c, 38c penetrating in the left-right direction at the same central axis. I have. One of the pair of bracket members forming the connection brackets 36, 38, 36 on the side closer to the side plates 10, 12.
b and 38b are respectively extended upward, and are provided with mounting holes 36d and 38d, respectively, with substantially the same central axis as the mounting holes 12d and 10d provided in the side plates 10 and 12, respectively.

Referring to FIGS. 6 and 7 together with FIGS. 2 and 3, the inner bucket 6 is formed integrally by welding various steel members to each other. Inner bucket 6
The inner bucket plate 4 has a J-shaped cross section that is aligned with the U-shaped cross section inside the bucket body 4 and has a shorter side of the U-shape and extends in the left-right width direction (left-right direction in FIG. 7).
0, and a pair of inner plates 42, 44 fixed to both sides of the inner bucket plate 40.
Both outer surfaces in the width direction formed by 44 are formed so as to be slidably inserted inside the side plates 10 and 12 of the bucket body 4. Brackets 24 and 26 are formed at the left and right ends on the upper rear surface of the inner bucket plate 40, respectively. The brackets 24 and 26 have hollow members 24a and 26a, respectively. The hollow members 24a and 26a have plates 24b and 26b each having one end on the side surface of the inner plates 42 and 44 and the other end standing on the inner bucket plate 40.
The inner plate 42 and the plate 24b, and the inner plate 44 and the plate 26b are provided with mounting holes 24c and 26c, respectively, penetrating in the left-right direction at the same central axis. At the center in the vertical direction on the back surface of the inner bucket plate 40, a reinforcing member 46 having an angle-shaped cross section is provided along the entire length in the left-right width direction of the inner bucket plate 40, and a reinforcing member 48 having a channel-shaped cross section is provided below. The two end portions of the connecting members 46 and 48 abut against and are fixed to the inner plates 42 and 44, respectively. Connection brackets 28 and 30 are formed at the left and right ends in the vertical center of the back surface of the inner bucket plate 40. The connection brackets 28, 30 are respectively formed by bracket members 28a, 30a erected on the reinforcing member 46 and inner plates 42, 44, and each has a mounting hole 28b, 30b penetrating in the left-right direction at the same central axis. Is provided. A cutting edge 32 serving as a cutting edge is provided over the entire width of the inner bucket 6 in the left-right direction at the end of the J-shaped arc of the inner bucket plate 40. The cutting edge 32 is provided so that the inner bucket 6 is
It is incorporated via 4c and 26c, and is positioned and formed so that the surface of the inner plate 21 of the blade body 4 can slide with a minimum gap when turning inside the bucket body 4.

The hydraulic cylinder 8 is a well-known telescopic hydraulic actuator. A mounting hole is formed at each of the head end at one end and the rod end at the other end.

The attachment of the inner bucket 6 and the hydraulic cylinder 8 to the bucket body 4 will be described mainly with reference to FIGS. 2 and 3.
The attachment holes 24a and 26a (FIGS. 6 and 7) of the inner bucket 6 are respectively attached to the attachment holes 10d and 38 of the bucket body 4.
d and 12d, 36d (FIG. 5), and are pivotally connected via long pins 110, 112, respectively. The pins 110 and 112 are attached to the mounting holes 24c and 26c of the inner bucket 6 by appropriate means such as a set screw.
(FIG. 7), and are rotatably inserted into the mounting holes 10d, 38d and 12d, 36d (FIG. 5) of the bucket body 4. One end (head end) of the hydraulic cylinder 8 is provided with a pin 11 in each of the mounting holes 10c and 11a and 12c and 13a (FIGS. 4 and 5) of the bucket body.
The other end (rod end) is attached to the inner bucket 6 through the mounting holes 28b, 30b.
(FIGS. 6 and 7) are rotatably mounted via pins 118 and 120, respectively. The bucket body 4 is provided with mounting holes 3 for three sets of connecting brackets 34, 36, 38 on the back.
Attach to a loading machine (not shown) by 4c, 36c, 38c.

The operation of the variable capacity bucket 3 as described above with reference to FIG. 8 will be described. When the hydraulic cylinder 8 is contracted or extended, the inner bucket 6
In the direction indicated by arrow 130 around the mounting pin 110, that is, backward or forward of the variable capacity bucket 3. When the hydraulic cylinder 8 is fully contracted, the inner bucket 6 is positioned in the bucket body 4 at the position indicated by X fully retracted. At this time, the volume of the bucket set by the bucket main body 4 and the inner bucket 6 becomes the maximum. On the other hand, when the hydraulic cylinder 8 is fully extended, the inner bucket 6 is positioned at the position indicated by Y in the bucket body 4 which has been fully advanced. At this time, the bucket body 4 and the inner bucket 6
The volume of the bucket set by is minimized. The volume of the bucket, that is, the bucket capacity, can be arbitrarily changed by extending or contracting the hydraulic cylinder 8 and arbitrarily positioning the inner bucket 6 between the position X and the position Y shown in the figure.

Here, the bucket capacity in the present embodiment will be specifically described. When loading a dump truck, etc. with a normal bucket, the bucket must be fully scooped, or a small amount of scooped into the bucket, the bucket tilted forward, or the bucket tilted backward. It is performed with various scooping amounts and bucket postures, such as a state of being held. Therefore, in order to correctly know the loading amount by the bucket, it is necessary that the amount scooped into the bucket is always constant and repeatable. The bucket capacity in the present embodiment includes not only the capacity of the bucket itself, but also the amount of piles piled on the bucket, the attitude of the bucket is determined, and the bucket capacity is calculated based on the attitude of the bucket. Referring to FIG. 9, the bucket posture is horizontal when the bucket body 4 is viewed from the side and the front edge 131 of the side plate 10 scoops the load target and raises the bucket body 4. Based on position. The bucket capacity when the hydraulic cylinder 8 is extended and moved to the position where the inner bucket 6 changes the capacity shown in the figure is the bucket capacity (a) set by the bucket body 4 and the inner bucket 6, and the pile capacity. Minutes (b). The bucket capacity when the hydraulic cylinder 8 is fully contracted and the inner bucket 6 is fully retracted, that is, the maximum bucket capacity includes (a) + (b) + (C). The shape of the pile of piles (b) in actual work can be determined by the specific gravity and properties (lumps, granules, etc.) of the loading material, etc., so that the correction coefficient of the mountain shape based on the specific gravity, properties, etc. is determined in advance and the capacity is detected It is input to the calculating means of the means 50 or the capacity setting means 70 (the capacity detecting means 50 and the capacity setting means 70 will be described later in detail). Regarding the factor in the bucket width direction (the direction perpendicular to the paper surface in FIG. 9) in the bucket capacity, the actual capacity in (a) and (c) is the area of (a) and (c) in the bucket body 4. And (b) is obtained by multiplying the area of (b) by the width dimension of the bucket body 4 and experimentally calculating a coefficient for correcting the shape of the mountain at both ends in the width direction. What is necessary is just to make correction by the shape of a mountain. Further, in the present embodiment, the state of the bucket is based on the position where the front edge becomes horizontal, but this position does not necessarily have to be horizontal. The position of the bucket such as forward tilt, horizontal tilt, and backward tilt can always be determined in a predetermined state by providing a positioning means in a means (not shown) for tilting the bucket forward and backward provided in the loading machine. . In this way, in the variable capacity bucket 2, the fixed bucket capacity can always be obtained by setting the inner bucket 6 at an arbitrary position and always scooping the bucket in the heap as much as possible.

Referring to FIG. 1 and FIG.
0, the displacement detecting means 52 included in the capacity detecting means 50 is constituted by a well-known potentiometer for detecting the displacement of the rotation angle, and comprises a bucket body 4 and an inner bucket 6.
Is configured to electrically detect the turning angle at the turning center based on the relative turning displacement. As a reference for the angle measurement, for example, the state of the maximum bucket capacity (position X in FIG. 8) in which the hydraulic cylinder 8 is fully contracted and the inner bucket 6 is fully retracted in the bucket body 4 is defined as an angular displacement 0, and based on this, The angular displacement when the hydraulic cylinder 8 is extended to move in the direction of reducing the bucket capacity (the direction of the position Y in FIG. 8) is measured. As shown in FIG. 10, the displacement detecting means 52 is fixed to the mounting hole 38d of the mounting bracket 38b on the upper right side of the rear surface of the bucket body 4 by a bolt 52a. In this portion, the protruding portion 110a of the pin 110 rotatably inserted into the mounting hole 38d of the mounting bracket 38b is connected to the displacement detecting means 52, and the relative rotation angle with the pin 110 fixed to the inner bucket 6 is changed. Is detected.

The capacity calculating means 54 is composed of a microcomputer, is housed in a dustproof and waterproofed case, and is installed at an appropriate place of the loading machine. It is electrically connected to the displacement detecting means 52 and receives the detected displacement signal. The capacity calculating means 54 is programmed to calculate the bucket capacity in the relative turning displacement between the bucket body 4 and the inner bucket 6. The calculating means 54 includes gravel,
It includes a correction means for correcting the influence on the bucket capacity calculation due to the specific gravity, properties (lumps, granules, etc.) of the material of the loading object such as sand, and in particular, the shape of the peaks.

The capacity display means 56 is constituted by a display means such as a liquid crystal panel, is disposed at the driver's seat of the loading machine, and is electrically connected to the calculation means 54 and is a bucket which is an output signal from the calculation means 54. The capacity is displayed. The capacity display means 56 is provided with a correction value input switch of the correction means.

The capacity setting means 70 will be described with reference to FIG. 1. The capacity commanding means 72 included in the capacity setting means 70 is provided at the driver's seat of the loading machine, and includes a switch for commanding a desired bucket capacity. It consists of a microcomputer. The microcomputer is programmed to calculate the instructed bucket capacity into a relative turning displacement between the bucket body 4 and the inner bucket 6. The capacity commanding means 72 includes correction means for correcting the influence on the bucket capacity calculation due to the specific gravity, properties, and the like of the material.
A display means such as a liquid crystal panel for displaying correction contents is included.

The actuator control means 74 is constituted by a microcomputer, housed in a dust-proof and water-proof case, and installed at an appropriate place of the loading machine.
They are electrically connected so that output signals of the displacement detecting means 52 and the capacity commanding means 72 are input. The actuator control means 74 determines the current displacement signal detected by the displacement detection means 52, ie, the current relative position between the bucket body 4 and the inner bucket 6, and the displacement signal commanded by the capacity command means 72, ie, the inside of the bucket body 4. It includes a displacement comparison means for comparing a desired relative position with the bucket 6, and is further programmed to output a signal to extend or contract the hydraulic cylinder 8 to the actuator operation valve 76 according to the result of the comparison. The actuator control means 74 is electrically connected to an actuator operation valve 76 for operating the expansion / contraction operation of the hydraulic cylinder 8.

The actuator operating valve 76 is constituted by an electromagnetic hydraulic switching valve and is operated by an electric signal. It is provided in a hydraulic flow path between the hydraulic source 80 of the loading machine and the hydraulic cylinder 8, and based on an electric signal output from the actuator control means 74, such as the direction and intermittent flow of pressure oil to the hydraulic cylinder 8. A switching operation is performed.

The operation of the variable capacity bucket device 2 provided with the capacity detecting means 50 will be described with reference to FIG. 1. By providing the capacity detecting means 50, the bucket at an arbitrary position in the bucket body 4 of the inner bucket 6 is provided. You can know the capacity. (1) When the hydraulic cylinder 8 expands and contracts and the inner bucket 6 turns inside the bucket body 4, the relative position between the bucket body 4 and the inner bucket 6 is detected by the displacement detecting means 52 as an angular displacement, and the capacity calculation is performed. Output to the means 54. (2) The capacity calculating means 54 calculates the bucket capacity based on the angular displacement output from the displacement detecting means 52 while also correcting the specific gravity and properties of the loaded material and outputs the calculated bucket capacity to the capacity displaying means 56. (3) The capacity display means 56 displays the calculated capacity on the display panel based on the output from the capacity calculation means 54. By providing the capacity detecting means 50, the operator operates the manually operated valve 78 in the driver's seat to expand and contract the hydraulic cylinder 8, change the position of the inner bucket 6, and check the variable capacity bucket 3 while watching the bucket capacity displayed on the panel. Can be set to a desired bucket capacity. In addition, the bucket capacity is initially set to be large, and the load is scooped, and the hydraulic cylinder 8 is operated while watching the bucket capacity displayed on the display panel to spill a part of the already scooped portion from the bucket. The capacity can be adjusted accordingly.

The operation of the variable capacity bucket device 2 provided with the capacity setting means 70 will be described with reference to FIG. 1. By providing the capacity setting means 70, the bucket capacity can be automatically set to a desired value. it can. (1) Capacity command means 72 provided in the driver's seat of the loading machine
To input the desired volume. At this time, data such as specific gravity and properties of the loaded material are input to the correction means provided in the capacity command means 72. The capacity command means 72 converts the position of the inner bucket 6 with respect to the bucket body 4 into a turning angle displacement based on the command signal, and outputs it to the actuator control means 74. (2) The displacement detecting means 52 detects the current relative turning angle displacement between the bucket main body 4 and the inner bucket 6, and outputs the displacement to the actuator control means 74. (3) The actuator control means 74 includes the displacement detection means 5
2, the angular displacement signal of the current bucket body 4 and the inner bucket 6 from the inner bucket 6 is compared with the angular displacement by a command from the capacity commanding means 72, and the actually detected angular displacement becomes the commanded angular displacement. To move the hydraulic cylinder 8 as described above is output to the actuator operating means 76. That is, when the actually detected angular displacement is less than the commanded angular displacement, the hydraulic cylinder 8 is extended until the commanded angular displacement is reached, and the actually detected angular displacement is larger than the commanded angular displacement. In this case, an output is made so that the hydraulic cylinder 8 is contracted until the commanded angular displacement is reached. (4) The actuator operating means 76 performs a switching operation such as the direction and intermittent flow of hydraulic pressure to the hydraulic cylinder 8 so as to extend or contract the hydraulic cylinder 8 based on a signal from the actuator control means 74. . With the provision of the capacity setting means 70, when a desired bucket capacity is commanded, the hydraulic cylinder 8 is automatically operated to set the bucket capacity.

The relative angular displacement between the bucket body 4 and the inner bucket 6 can be visually recognized by providing the indicator means 90. An embodiment of the indicator means 90 will be described with reference to FIG.
Numeral 0 is configured to display the movement of a pin 110 serving as a turning center fixed to the bracket 24 of the inner bucket 4 on the upper right side on the back of the variable capacity bucket 3. This part is easily visible from the driver's seat of the loading machine.
The relative angular displacement between the bucket body 4 and the inner bucket 6 can be easily known by the movement in the rotation direction of 0. One end 110a of the pin 110 is rotatably inserted into the mounting hole 38d of the bracket 38b of the bucket body 4, and the end protrudes from the mounting hole 38d. Pin hole 3 of pin 110
The indicator member 92 is fixed to the protruding end from 8d. The indicator member 92 is formed in the shape of a thick disk, and a recess is provided at the center of the disk so that the protrusion 110 a of the pin 110 is formed.
And the indicator member 92 and the pin 110 are integrally fixed by an appropriate means (not shown). An arrow-shaped pointer 92a is fixedly attached to the outer peripheral surface of the indicator member 92 so as to protrude toward the bracket 38b. Thus, the pointer 92a can move integrally with the pin 110. An indicator mark 94 is attached to a portion of the bracket 38b indicated by the pointer 92a. Pointer 92 is placed on indicator mark 94
A scale is provided in the range where a moves, and "MAX" and "MI"
NI ". When the hydraulic cylinder 8 is fully contracted, the pointer 92a points to “MAX” (maximum), and when the hydraulic cylinder 8 is fully extended, the pointer 9
2a is arranged so as to indicate "MINI" (minimum), and "MINI"
Scales are appropriately distributed between "AX" and "MINI".

According to the indicator means 90, the relative turning position of the inner bucket 6 with respect to the bucket body 4 is confirmed by the pointer 92a integrated with the inner bucket 6 and the indicator mark 94 integrated with the bucket body 4. You. Therefore, the bucket capacity can be changed by operating the hydraulic cylinder 8 that moves the inner bucket 6 at the driver's seat of the loading machine while checking the position of the pointer 92a at the indicator mark 94.

The above-mentioned capacitance detecting means 50 and capacitance setting means 7
0 means that both can be mounted on the bucket device 2 at the same time. In this case, the displacement detecting means 52 can be shared. In the present embodiment, the hydraulic cylinder 8 is mounted as an actuator for rotating the inner bucket 6 with respect to the bucket body 4, but an electric actuator such as an electric motor may be used. In addition, the bucket capacity is based on the heaping state of the bucket fully filled, but a mechanism is provided to cut off the heaping part by means such as a spatula at the edge of the bucket, and the capacity of the bucket itself is changed to the bucket capacity. Can also be defined as Further, the bucket capacity can be displayed as a weight by adding a step of calculating the weight by multiplying the capacity by the specific gravity to the program of the capacity calculating means. The loading machine equipped with the variable-capacity bucket according to the present invention is equipped with buckets of various capacities of various sizes, so that the capacity can be appropriately changed according to the type of work. .

[0032]

According to the variable capacity bucket apparatus of the present invention, the bucket capacity, that is, the capacity of the bucket can be changed, the changed capacity can be confirmed, and the bucket capacity can be changed to the desired capacity instructed. Therefore, the loading amount can be easily confirmed in the loading operation, and a desired amount can be easily loaded.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of a variable capacity bucket device configured according to the present invention.

FIG. 2 is a side view of a variable capacity bucket.

FIG. 3 is a view as seen in the direction of arrow 3A in FIG. 2,
The rear view of a variable capacity bucket.

FIG. 4 is a side view of the bucket body.

5 is a view as seen in the direction of arrow 5A in FIG. 4,
The rear view of a bucket main body.

FIG. 6 is a side view of the inner bucket.

7 is a view as viewed in the direction of arrow 7A in FIG. 6,
The rear view of an inner bucket.

FIG. 8 is a sectional view taken in the direction of arrow 8A in FIG. 3 and is an explanatory view of the operation of the variable capacity bucket.

FIG. 9 is an explanatory view of a bucket capacity of a variable capacity bucket device.

FIG. 10 is a mounting diagram of displacement detection means.

FIG. 11 is a mounting view of the indicator means.

[Explanation of symbols]

 2: Variable capacity bucket device 4: Bucket body 6: Inner bucket 8: Hydraulic cylinder (actuator) 50: Capacity detection means 52: Displacement detection means 54: Capacity calculation means 56: Capacity display means 70: Capacity setting means 72: Capacity command Means 74: Actuator control means 90: Indicator means

Claims (4)

[Claims] 1. A bucket body comprising: a bucket body; an inner bucket rotatably mounted in the bucket body; and an actuator for rotating the inner bucket, and a bucket capacity set by the bucket body and the inner bucket. Is changed by rotating the inner bucket. 2. The bucket device comprises a capacity detecting means, the capacity detecting means detecting a relative turning displacement between the bucket body and the inner bucket, and a signal from the displacement detecting means. 2. The variable capacity bucket device according to claim 1, further comprising: capacity calculation means for calculating a bucket capacity based on the above, and capacity display means for displaying the calculated bucket capacity. 3. The bucket device comprises a capacity setting means, wherein the capacity setting means commands a bucket capacity by a relative turning displacement between the bucket body and the inner bucket; A displacement detecting means for detecting a relative turning displacement with respect to the inner bucket; an actuator operating means for operating the actuator; and a control signal to the actuator operating means so that the detected turning displacement becomes the commanded turning displacement. The variable capacity bucket device according to claim 1, further comprising: an actuator control unit that outputs a value. 4. The variable-capacity bucket device according to claim 1, wherein the bucket device includes indicator means for visually recognizing a relative turning displacement between the bucket body and the inner bucket.