JPH0618463U - Hydraulic excavator bucket - Google Patents

Abstract

(57) [Summary] [Objective] To provide a bucket for a hydraulic excavator with a plate temporarily installed to prevent leakage of sand and gravel. [Structure] At a site above the starting end 1k of the bucket 1a rotatably supported by the tip of the arm 1c for excavation work,
A bucket for a hydraulic excavator in which a mud leakage prevention plate 4 is detachably attached in the width direction of the bucket 1a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bucket for a hydraulic excavator that can be selectively used as a bucket and a sand bucket.

[0002]

[Prior art]

 The hydraulic excavator is used to excavate in the ground with a bucket attached to the tip of the arm, or to scoop up loose bulk material such as excavated mud into a bucket attached to the tip of the arm to load it onto a truck, etc. They are loading and unloading.

[0003]

[Problems to be solved by the device]

 By the way, ordinary clay mud is in the form of lumps and does not easily overflow even if it is piled up in a bucket, but sand and gravel can easily overflow even if it is piled up in a bucket. When this sand and the like overflows when it is loaded onto a truck, especially if it overflows on the asphalt pavement in the summer, it is difficult to remove it. Observing the situation where the sand overflows, the tip of the bucket is tilted downward to scoop the sand, and then the bucket is moved upward while moving laterally. It is common for the sand to overflow from the bucket's first end, that is, the part attached to the arm. However, if this bucket has a shape with a raised first end so that sand etc. will not overflow, it will be difficult to see the inside of the bucket when excavating or scooping or when loading it on a high place such as a truck, and the operability is reduced. There is a problem of being inferior.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a bucket for a hydraulic excavator that prevents the contents of the bucket from overflowing from the arm side of the bucket. .

[0005]

[Means for Solving the Problems]

 The bucket of the hydraulic excavator according to the present invention, which achieves the above objects, has a mud leak in the width direction of the bucket at a position above the starting end of the bucket rotatably supported by the tip of the arm for excavation work. The prevention plate is detachably attached. There is no particular limitation on disposing the mud leakage prevention plate on the arm above the starting end of the bucket.For example, insert a rod-shaped mounting arm in the plate into a through hole formed in the arm, and insert a pin into the hole provided in this arm. It is possible to use various fixing means, such as one that is inserted and fixed, or one that is fixed with a screw, fixed with a claw biased by a spring, and released by pressing a lock release button.

This mud leak prevention plate may be an obstacle when handling clay-like mud lumps, so in this case, remove it from the arm or bucket at a predetermined position and place it on a suitable part of the machine. It is good to store it in. In addition to the original purpose of the present invention, this mud leakage prevention plate can also be used as a tool for scraping off mud adhered to the inner surface of the bucket. For that purpose, it is preferable to make the tip of the plate portion sharp. On the contrary, it is possible to hold the plate and drop the mud in the narrow part at the tip of the mounting arm. When the mounting arm is used to remove mud, it is preferable to make the tip sharp and to round the tip of the plate so that there is no danger when holding the plate by hand.

[0007]

[Work]

 When the mud leak prevention plate is attached in the width direction of the bucket start end, when scooping up loose bulk material such as sand that scatters easily, even if the posture of this bucket rises forward You can prevent it from overflowing. Also, when scooping loose bulk materials such as lumps of clay-rich soil, remove this mud leak prevention plate and lower the start end of the bucket to widen the field of view for bucket work. Can be made easier.

[0008]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A bucket 1a of a hydraulic excavation work machine 1 according to a first embodiment illustrated in FIGS. 1 to 11 is supported at the tip of a series of arms including a boom 1b and an arm 1c, and the bucket 1a is armed by a plurality of hydraulic cylinders 1d. 1c, the arm 1c is rocked at the tip of the boom 1b, and the boom 1b is rocked with respect to the machine body 1f. The machine body 1f is flat against a traveling device such as a crawler. It is supported so that it can turn inside.

A mud leak prevention plate 4 is provided at the start end of the bucket 1a, that is, at the side of the tip 1g of the arm 1c. It is for preventing overflow from the edge near 1c, and can also be used as a tool for dropping mud in the bucket 1a. As shown in FIG. 3, the mounting arms 4b are attached to the plate 4a. It is provided, and a pin hole 4c is opened at the tip end side of the mounting arm 4b. Further, in this embodiment, the tip 4d is sharpened in a desired range so that it is convenient for dropping mud or the like adhering to the bucket 1a by the plate portion 4a.

In order to attach the mud leakage prevention plate 4 to the arm 1c, a pair of attachment holes 2a and 2b through which the attachment arm 4b is inserted are provided in the arm tip portion 1g, and the attached plate portion 4a is attached. A plate guard 1h (FIGS. 4 and 6) is extended from the arm 1c so as not to rotate around the arm 4b. In order to fix the mud leakage prevention plate 4 attached to the arm 1c, a split pin 6 (FIG. 5) was inserted through the pin hole 4c and fixed as shown in FIG. In this embodiment, the two mounting holes 2a and 2b are vertically provided at the tip of the arm 1c, but it is also possible to insert the two mounting arms 4b into one hole.

As described above, the mud leakage prevention plate 4 is optimally mounted so as to be located at the tip 1g of the arm 1c and near the start end 1k of the bucket 1a. You may attach it to 1k directly and detachably. With the mud leak prevention plate 4 attached to the tip of the arm 1c, the edge of the starting end portion (the portion attached to the arm 1c) 1k of the bucket 1a is raised upward as shown in FIGS. Therefore, when the rod 1e of the hydraulic cylinder 1d is pushed out to bend the bucket 1a in the state shown in FIG. 4 to the state shown in FIG. 6, the plate portion 4a becomes a state in which the surface of the starting end portion 1k of the bucket 1a is lengthened.

In this way, a large amount of mud 8 that easily collapses is scooped up by the bucket 1a with the starting end 1k extended, and even if the heaped mud 8 collapses in the direction shown by the white arrow in FIG. It is blocked and prevented from overflowing from the bucket 1a. Further, the mud and the like attached to the bucket 1a can be removed by using the mud leak prevention plate 4 of the present invention. In this case, as shown in FIG. 8, mud and the like can be scraped off by the mud leak prevention plate 4 removed from the arm 1c.

Therefore, it is not necessary to search for a stick or a piece of plate that removes the mud adhering to the bucket 1a, and a dedicated mud removing member is attached to the driver's seat or the like to avoid making the area around the driver's seat narrow. Things will come. By the way, the engine room 10 is usually covered with an engine cover 10a as shown in FIG. Therefore, there is a problem in that, when continuous high-load work is performed, the temperature inside the engine room 10 becomes high, which causes overheating of the engine and rapid evaporation of battery fluid. Therefore, conventionally, the engine cover 10a is provided with openings such as a small number of punch holes to allow the heat in the engine room 10 to escape, but it is difficult to sufficiently dissipate heat by such means. If the opening area of the engine cover 10a is increased in order to sufficiently dissipate this heat, noise of the engine and the like will increase. Therefore, conventionally, there is no choice but to reduce this opening area, and heat cannot be sufficiently dissipated. It was

Therefore, in the hydraulic excavation work machine 1 used in this embodiment, an air window 10b is opened on the side of the engine cover 10a, and a louver 10c is attached to the air window 10b so that the louver 10c can be opened and closed. When the lever 12 is operated, the louver 10c is interlocked and opened, and the outside air is taken into the engine room 10 for cooling. When the turning lever 12 is not operated, the heat radiation state is the same as the conventional one.

A structure for opening and closing the louver 10c in conjunction with the turning lever 12 will be described below with reference to FIGS. The inner wire of the turning operation wire 12a connected to the turning lever 12 provided in the driver's seat is connected to the bell crank 12b, and the bell crank 12b is connected to the valve spool 12d and the louver wire 12e of the valve for turning the body 1f. And are connected. The outer 12f of the louver wire 12e was attached to the bracket 12g, and the inner wire 12h was attached to the rotating pin 12i. The rotating pin 12i is rotatably attached to a rotating fulcrum shaft 12j fixed to the louver 10c.

Therefore, the louver 10c forms a link at the point A in FIG. 11, and when the inner wire 12h is moved, the turning pin 12i drives the turning fulcrum shaft 12j while turning, and the shaft 10d. The louver 10c can be rotated around the axis. At this time, the louver 10c is rotated in the direction in which the outside air is taken into the engine room depending on the direction in which the engine room 10 is rotated. That is, when the engine room 10 turns in the direction of the white arrow in FIG. 11, the louver 10c rotates clockwise when viewed from above, and the outside air W is taken into the engine room 10 through the air window 10b, and the engine is turned on. It is possible to prevent overheating and evaporation of battery fluid.

Next, a modified example of the mud leak prevention plate 4 described above will be described with reference to FIGS. That is, in this modified example, as shown on the right side of FIG. 12, one end of the mounting arm 4b of the mud leakage prevention plate 4 mounted on both sides of the arm 1c is sharpened to protect the protective cover 4f from danger. In addition, the tip portion 4g of the plate portion 4a is rounded so that an operator does not have a danger when gripping the plate portion 4a.

Then, the protective cover 4f is provided with a pin hole 4c at a position common to the pin hole 4c provided in the mounting arm 4b, and the protective cover 4f is also attached to the arm 1c together with the mounting arm 4b by the pin 6 (FIG. 5). Fixed The mud leakage prevention plate 4 according to the modified examples shown in FIGS. 12 and 13 has the same action and effect as the mud leakage preventing plate 4 from the bucket 1a. In addition, the tip can be sharpened to use the sharp tip 4e of the mounting arm 4b to easily remove the deposits at the corners of the bucket 1a.

Further, in FIG. 14, the rotating pin 12i of FIGS. 10 and 11 is formed into a cylindrical shape. The other structure is similar to that of FIGS. 10 and 11, and therefore, the same members are designated by the same reference numerals, and the description thereof will be omitted. Further, although the number of the air window 10b in each embodiment is one, it is provided on both sides of the engine cover 10a so that both are opened during turning, or noise is suppressed as much as possible by opening only in the turning direction. be able to. Further, although the louver 10c in each embodiment has a single structure, it may have a plurality of structures or the rotation shafts may be arranged laterally.

[0020]

[Effect of device]

 As described above, the bucket of the hydraulic excavator according to the present invention has a mud leakage prevention plate in the width direction of the bucket at a position above the starting end of the bucket rotatably supported at the tip of the arm for excavation work. Is detachably attached. Therefore, it is possible to prevent mud with a low clay content, gravel or sand, etc. from being overflowed from the arm side when scooped in a bucket, and to handle mud with a high clay content. The mud leak prevention plate can be removed to extend the field of view and improve work efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view of a hydraulic excavation work machine used in a first embodiment of the present invention.

FIG. 2 is a side view of a main portion of FIG. 1 with a mud leakage prevention plate removed.

FIG. 3 is a perspective view of a mud leakage prevention plate used in Example 1.

FIG. 4 is an enlarged view of a main part of FIG. 1 in which the posture of the bucket is changed.

5 is a rear view of a bucket provided with the mud leakage prevention plate of FIG.

6 is a perspective view showing a main part of the arm and bucket of FIG. 1. FIG.

7 is a perspective view showing a state where mud is put in the bucket shown in FIG.

FIG. 8 is a perspective view showing how mud removal work is performed using a mud leak prevention plate.

FIG. 9 is a plan view of a main part of a transmission mechanism of a turning operation of the hydraulic work machine.

FIG. 10 is an elevational view of an essential part of the louver opening / closing mechanism shown in FIG. 1;

11 is a perspective view of the opening / closing mechanism of FIG. 10.

FIG. 12 is a perspective view showing a modified example of the mud leakage prevention plate shown in FIG. 1.

FIG. 13 is a rear view of the mud leakage prevention plate of FIG. 12 attached to a bucket.

14 is an elevation view of a main part of a modified example of the louver opening / closing mechanism shown in FIG. 10.

[Explanation of symbols]

1 hydraulic excavator 1a bucket 1c arm 2a mounting hole 2b mounting hole 4 damming plate 4a plate part 4b mounting arm

Claims (1)

[Scope of utility model registration request] 1. A bucket for a hydraulic excavating work machine in which a mud leakage prevention plate is detachably attached in the width direction of the bucket at a position above the starting end of the bucket rotatably supported by the tip of an arm for excavation work. .