JPH0663663U - Weight mounting structure in backhoe - Google Patents

Abstract

(57) [Summary] [Purpose] The weight attached to the backhoe can be easily attached. [Structure] In a backhoe in which a turning frame (3) is placed on the upper part of the traveling machine frame (2) so as to be freely rotatable, and an excavation working section (6) is connected to the front side of the turning frame (3) so as to be vertically movable. , The bottom plate that makes up the turning frame (3)
The vertical ribs (15), (15) are provided on the (14) from the front toward the rear, and the weight (16) is attached to the rear side position (14-1) of the bottom plate (14) of the turning frame (3). The weight (16) can be placed and is fixed to the vertical ribs (15) and the rear side position (14-1) of the bottom plate (14).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a weight mounting structure in a backhoe having an excavating portion.

[0002]

[Prior art]

 Conventionally, the weight attached to the backhoe is mounted on the rear side of the turning frame, and in this case, a weight mounting seat is provided by welding on the rear side of the turning frame, and the weight mounting seat is attached to the rear side. It was to attach a weight to.

[0003]

[Problems to be solved by the device]

 However, in the conventional example described above, the weight is attached to the weight mounting seat projecting rearward of the turning frame, so that the weight has a structure protruding to the rear of the aircraft and the surroundings when the aircraft turns. It abuts the building.

Further, when fixing the weight to the weight mounting seat, it is necessary for an operator to support the weight, which is a heavy object, and fix the weight with a bolt while matching the mounting positions. It was something that could not be done.

[0005]

[Means for Solving the Problems]

 Therefore, in the present invention, the turning frame is mounted on the upper part of the traveling machine frame so that the turning frame can be freely swiveled. A vertical rib is provided rearward from the front part, and a weight can be placed at the rear position of the bottom plate of the turning frame, and the weight is fixed to the vertical rib and the rear position of the bottom plate. The purpose of the present invention is to provide a weight attachment structure in the backhoe, which is characterized by

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a backhoe, on which a turning frame 3 is rotatably mounted on an upper part of a traveling machine frame 2. 4 is an engine provided on the upper part of the turning frame 3, and 5 is a bonnet covering the upper part of the engine 4.

Reference numeral 6 denotes an excavation work section connected to the front side 3-1 of the turning frame 3, which is vertically movable by a hydraulic actuator 7. 8 is a main boom, 9 is an intermediate boom, 10 is an excavation bucket, and 11 is a main boom mounting bracket.

Reference numeral 12 is a driver's seat, 13 is an operating portion, 14 is a bottom plate constituting the turning frame 3, and two vertical ribs 15 and 15 are arranged on the bottom plate 14 from the front to the rear. I have set up.

Further, a weight 16 is placed and connected continuously at a rear position 14-1 of the bottom plate 14. Reference numeral 15-1 is the rear end of the vertical rib 15 and is formed in a V shape in plan view.

The weight 16 is fixed to the rear position 14-1 of the bottom plate 14 and the rear end 15-1 of the vertical rib 15 by bolts 17 while being formed in a fan shape.

Further, FIG. 3 is a detailed view showing a fixed portion of the weight 16, in which the weight 16 is provided with a step portion 16 -1 so that the weight 16 can be fitted to the rear end position 14-1 of the bottom plate 14. ing.

FIG. 6 shows another embodiment, which shows the structure of the cabin of the backhoe.

Reference numeral 20 denotes a cabin provided on the revolving frame 21 of the backhoe, and the cabin 20 is inclined so that the upper side 20-1 is located at the rear of the body.

Therefore, when the excavation main boom 22 connected to the front part of the revolving frame 21 rises, the excavation main boom 22 does not come into contact with the front surface of the cabin 20. As a result, the rear tilt angle of the main boom 22 for excavation can be increased, and the turning radius of the machine body can be reduced.

Further, conventionally, it is necessary to separately assemble the hydraulic cylinders 23 for the main boom because the rear boom angle of the main boom is different between the cabin specification in which the cabin is equipped with a cabin and the canopy specification in which the canopy is equipped. According to the above-described embodiment, since the hydraulic cylinder 23 can be shared, the manufacturing cost is low, and the problems such as erroneous assembly of the hydraulic cylinder can be solved.

The embodiment of the present invention is configured as described above. In FIGS. 1 to 3, when the weight 16 is fixed to the turning frame 3 of the backhoe 1, the bottom plate of the turning frame 3 is fixed. Place the weight 16 on the rear side position 14-1 of 14. In this case, the left and right sides of the weight 16 are fitted between the rear ends 15-1, 15-1 of the vertical ribs 15, 15.

Then, the weight 16 and the rear side position 14-1 of the bottom plate 14 and the rear ends 15-1, 15-1 of the vertical ribs 15, 15 are screwed with bolts 17, 17 respectively, and the weight 16 is secured. It is fixed to the turning frame 3.

As described above, according to the above-described embodiment, the turning frame 3 is rotatably mounted on the upper part of the traveling machine frame 2, and the excavation work unit 6 is movably mounted on the front side of the turning frame 3. In the connected backhoe, vertical ribs 15 and 15 are provided on the bottom plate 14 constituting the turning frame 3 from the front to the rear, and the weight 16 is placed on the rear side position 14-1 of the bottom plate 14 of the turning frame 3. Since the weight 16 is fixed to the vertical rib 15 and the rear side position 14-1 of the bottom plate 14, it is possible to fix the weight 16 which is a heavy load to the turning frame 3 of the backhoe 1. Put the weight 16 on the rear side position 14-1 of the bottom plate 14 and fix it with bolts 17, and attach both sides of the weight 16 to the rear ends 15-1 and 15-1 of the vertical ribs 15 and 15 by bolts. Can be fixed by 17. Therefore, it is not necessary to support the weight 16 at the time of fixing the weight 16, the fixing is easy, and the fixing is reliable.

Further, since the positioning when the weight 16 is fixed is easy, the workability is improved, and the weight does not protrude to the rear of the machine body, and the machine body is constructed as a whole compact.

[0020]

[Effect of device]

 According to the present invention, a turning frame is rotatably mounted on the upper part of the traveling machine frame, and a front side of the turning frame is connected to the excavation work section so as to be vertically movable. A vertical rib is provided rearward from the front part, and a weight can be placed at the rear position of the bottom plate of the turning frame, and the weight is fixed to the vertical rib and the rear position of the bottom plate. Therefore, when attaching a weight, which is a heavy load, to the turning frame of the backhoe, place the weight on the rear position of the bottom plate and fix it with bolts, and attach both sides of the weight to the rear ends of the vertical ribs. Can be fixed. Therefore, it is not necessary to support the weight when fixing the same weight, and the fixing is easy and the fixing is reliable.

Further, since the positioning when the weight is fixed is easy, the workability is improved, and the weight does not protrude to the rear of the machine body, so that the whole machine body is configured compactly.

[Brief description of drawings]

FIG. 1 is an overall side view of a backhoe including the present invention.

FIG. 2 is a schematic plan view showing a state in which weights are fixed to a turning frame.

3 is a cross-sectional side view taken along the line I-I in FIG.

FIG. 4 is a rear view showing a fixed state of vertical ribs and weights.

FIG. 5 is a cross-sectional view of main parts showing another embodiment of the weight mounting structure.

FIG. 6 is a side view showing the cabin structure of the backhoe.

[Explanation of symbols]

 2 Traveling machine frame 3 Turning frame 6 Excavation work section 15 Vertical ribs 16 Weights 14 Bottom plate 14-1 Rear position

Claims (1)

[Scope of utility model registration request] 1. A turning frame (3) is rotatably mounted on an upper part of the traveling machine frame (2), and the turning frame (3) is mounted on the turning frame (3).
In the backhoe with the excavation work part (6) connected to the front side of the slab so that it can move up and down, vertical ribs (15), (15) are provided rearward from the front part on the bottom plate (14) that constitutes the turning frame (3). The weight (16) can be placed on the rear side position (14-1) of the bottom plate (14) of the turning frame (3), and the weight (16) is provided with the vertical ribs (15) and the bottom plate. (14) A weight mounting structure in a backhoe, which is fixed to a rear position (14-1).