JPH0340876Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to tunnel lining, shoring installation in construction, and high-place work.

(Conventional technology) In conventional tunnel lining and construction, shoring is installed sequentially as the excavation progresses, but this is because the work is performed on unprotected ground immediately after excavation. For large-scale tunnel construction, a jumbo excavator equipped with an erector for shoring erection, or a special erector trolley, etc., is used for large-scale tunnel construction. Although this is out of the question, in small-scale tunnel construction, there are issues such as budget, and we use a simple workbench and use other tools, even though we are aware that it is inefficient. In the past, shoring had to be erected manually, often using working machines, and with great danger.

(Problem to be solved by the invention) With the above-mentioned conventional technology, there is no problem in large-scale tunnel construction, as mentioned above, but in the work of installing shoring for small-scale tunnel construction,
Since the ground is unprotected during excavation, the principle is to shorten the working time, but the shoring is heavy and
Moreover, since the work is done at heights, a simple scaffolding workbench is used, and although other work machines are used, the inlays are constructed by hand as they are not specialized machines, and the work is carried out by hand depending on the site. There are many different types of work, but in any case, the labor burden is heavy and the work was done while avoiding danger.There was a demand for a simple erector workbench that was comparable to a dedicated machine. It is something that

(Means for solving the problem) This invention to solve the above problem is to make the erector workbench detachable from the hydraulic excavator,
It is possible to use it as a dual-purpose machine.Therefore, the arm attachment pin 3 at the tip of the boom 2 of the hydraulic excavator also serves as an insertion hole for the pin 4 on the left side of the arm attachment pin 3. The two lower points of the three-point bracket 5 are attached with pins 3 or 4, and the three-point bracket 5 is integrated with the boom 2, and the rotating support base 7 is held by the pin 6 at the upper part. , the workbench 9 can be rotated 180 degrees, the center part is pivoted, and the frame member of the swivel support 7 is slightly extended to the rear to provide two horizontal support arms 10 on the left and right.
are connected by two pins on the left and right 11, and in order to locate the lower part of the horizontal support arm 10, horizontal support arm support stands 12 are attached to the left and right sides of the rear part of the frame of the hydraulic excavator main body 1, The lower part of the horizontal support arm 10 is connected to the upper part of the left and right support stand 12 with a pin 13, so that it can be integrated with the hydraulic excavator main body 1 and can be used for both purposes.

(Function) Explaining the above configuration, by attaching the three-point bracket 5 to the boom 2 of the hydraulic excavator using pins 3 or 4, the position of the upper pin 6 can be moved to the bottom of the upper workbench. In addition to ensuring the stability of the worker at the closest location, since the boom 2 is curved, the position of the pin 6, which is the joint part with the swing support platform 7, is set at an appropriate high position, and the work platform is placed at a low position. A plurality of rotating rollers 8 are provided on the rotating support base 7, which maintains the horizontal level of the workbench even when the workbench is lowered, and which is connected and held by the pins 6.
The workbench 9 can be rotated 180 degrees through the center part, and the workability can be improved by pivoting the workbench 9 through the center part.Also, the frame member of the rotary support stand 7 is slightly extended to the rear and joined by two pins 11 on the left and right. and the two horizontal support arms 10
Due to the action of The cylinders 19 and 20 are operated alternately, eliminating the need for manpower as shown by the dotted line 27 in Fig. 3, making it easy to erect shoring work, and making it easy to work at heights, and also eliminating the need for scaffolding. With the above-mentioned device, the workbench 9 is naturally equipped with construction materials and materials on hand in order to improve work efficiency. At that point, a balance weight 28 is installed at the rear of the machine 1 to improve the balance of the machine (although it differs slightly depending on the workplace). It is possible to widen the work range without having to move to high or low places, and to improve work efficiency.

(Example) An example of this invention will be described with reference to the drawings.
The erector workbench is detachable and can also be used as a hydraulic excavator, and the arm and bucket of the hydraulic excavator are disassembled and attached to the boom 2. Figure 2 is a side view showing the work platform turned 90 degrees, Figure 3 is a front view showing how to erect the support, and Figure 4 is a plan view. The tip of the boom 2 also serves as the pin 3 for attaching the arm, and an insertion hole for a pin 4 is provided on the left side of the pin 3, and the lower two points of the three-piece set 5 are fixed with pins 3 or 4. Therefore, the three-point bracket 5 is the boom 2.
A plurality of turning rollers 8 are provided on the turning support stand 7, which holds the turning support stand 7 or the work table 9 together by a pin 6 at one point on the upper part of the three-point bracket 5. A pin 11 that enables the workbench 9 to rotate 180 degrees via rollers 8 and pivots the center portion thereof, and that extends the frame member of the rotating support base 7 a little to the rear and connects it to the two horizontal support arms 10 on the left and right. are provided on the left and right sides, and in order to join the upper parts of the two left and right horizontal support arms 10, and to determine the position of the lower parts of the two left and right horizontal support arms 10, a horizontal support arm support is provided at the rear of the frame of the hydraulic excavator main body 1. The platforms 12 are mounted on the left and right sides, and the lower portions of the two left and right horizontal support arms 10 are fixed with the lower pins 13. Therefore, when the work platform 9 is raised or lowered, Using the four pins as the base point, the workbench 9 always maintains a horizontal state regardless of whether it is in a high place or a low place, and can be raised and lowered easily and quickly. 9 has been turned 90 degrees. In this state, it is possible to easily pass through narrow passages with obstacles, and it is also possible to bring in shoring from outside the mine. In the state shown in Fig. 2, the shoring cradle 23, 24 or the shoring support roller 2
4 and 26, and at the time of erecting the shoring, the work platform 9 is rotated 90 degrees to become the shoring erecting system in the state shown in Fig. 1. 18 is operated by hydraulic cylinders 19 and 2 from the hydraulic source for the arm and bucket disassembled from the boom 2 of the hydraulic excavator.
0, respectively, and erector arms 17 and 1.
8 are activated alternately or simultaneously to raise the shoring as shown by dotted lines 21 and 22, and the shoring is in the state shown by dotted line 27 in Fig. 3. This is a simple method that eliminates the need for manpower and allows easy shoring work. In this embodiment, the erector arms 17, 18
In addition, operations such as lifting, lowering, and rotating the workbench 9 may be performed from the workbench 9 by installing an operation device on the workbench (not shown). All operations of the machine can be performed from the workbench, eliminating the need for an operator.

(Effects) According to the configuration of this invention, for all small-scale tunnel construction, it is possible to eliminate manual work for erecting the support, and to use mechanical power, it is possible to shorten the time, making it extremely safe and easy. In addition, there are tunnels of all cross sections, large and small, and there are small-scale tunnel works with large cross sections and short lengths. Although there is tunnel construction with a small cross section and a long length, the device of this invention is suitable for large and small hydraulic excavators, and can be used as a work platform for large, small, and cross sections. By providing a workbench with a device that meets the needs of the constructor, work efficiency can be further improved.In addition, by being used as a hydraulic excavator, the performance of the hydraulic excavator, Plus, since it is a workbench, it exhibits the convenience of being able to make small turns, increasing its practical value.Also, the workbench can rotate 180 degrees and the hydraulic excavator body can also swivel, and it can be raised and lowered. By being able to do this freely, it can be used in any work place, eliminates the need for scaffolding work, further widens the work range, increases the rate of movement, and fulfills conventional demands.

[Brief explanation of the drawing]

1 and 2 are side views. FIG. 3 is a front view. FIG. 4 is a plan view. 1 is the hydraulic excavator body, 2 is the boom, 3, 4,
is a pin, 5 is a three-point bracket, 6 is a pin, 7 is a rotating support base, 8 is a rotating roller, 9 is a workbench, 10
is a horizontal support arm, 11 is a pin, 12 is a horizontal support arm support stand, 13, 14 are pins, 15, 1
6, dotted line, 17, 18, erector arm,
19, 20 are hydraulic cylinders, 21, 22 are dotted lines, 23, 24 are shoring cradle, 25, 2
6 is a shoring support roller, 27 is a dotted line, and 28 is a balance weight.

Claims (1)

[Scope of utility model registration request] A pin 4 is provided on the left side of the arm attachment pin 3, which also serves as the arm attachment pin 3 at the tip of the boom 2 of the hydraulic excavator, and the lower two points of the three-point bracket 5 are connected to pins 3 and 4. The three-point bracket 5 is integrated with the boom 2, and the pin on the upper part 6 holds the rotating support base 7, and the work platform 9 can be rotated 180 degrees and the center portion is pivoted. The rear part of the support stand 7 and the two horizontal support arms 10 on the left and right
are joined by left and right pins 11, and horizontal support arm support stands 12 are provided on the left and right sides of the frame rear position of the hydraulic excavator main body 1 via the two left and right horizontal support arms 10, and the upper parts of the left and right support stands 12 are connected. , the lower portions of the two left and right horizontal support arms 10 are
The erector workbench is characterized in that it is attached and formed with pins 3 and is integrated with the hydraulic excavator body 1 so that it can be used for both purposes.