JP6922553B2 - Construction machinery - Google Patents

Description

The present disclosure relates to construction machinery and methods of rescue of construction machinery.

Patent Document 1 below discloses a construction machine operated by wireless remote control. Such a construction machine is supposed to be used at a dangerous site where it is judged that there is a risk of a secondary disaster in the boarding operation of the construction machine by human beings, for example, in recovery measures after a disaster occurs.

Japanese Unexamined Patent Publication No. 2002-227251

In recent years, water disasters (landslides, debris flows, floods, etc.) due to torrential rains have frequently occurred, and work in flooded areas of construction machinery is required. However, if the construction machine does not operate normally in the flooded area (for example, if it gets stuck), the person cannot risk the rescue and either abandon the aircraft or until the person can approach the aircraft. Had to wait for it to settle (for example, the water level would drop).

The present disclosure has been made in view of the above problems, and an object of the present disclosure is to rescue construction machinery stuck in a flooded area.

In order to solve the above problems, the construction machine of the present disclosure is a construction machine that works in a flooded area by remote control, and has a vehicle body that can enter the flooded area and a vehicle body that is attached to the vehicle body and is more than water. It has a tow cord with a light specific gravity.

Further, in the construction machine of the present disclosure, the tow string may have a string body and a float attached to the string body and having a lighter specific gravity than the string body.

Further, in the construction machine of the present disclosure, the tow string may be placed on the upper part of the vehicle body.

Further, in the construction machine of the present disclosure, the tow string may be mounted on the rear part of the vehicle body.

Further, in the construction machine of the present disclosure, the tow string temporarily fixed member mounted on the vehicle body is temporarily fixed to the vehicle body, and the temporary fixing is released when the tow string is towed. You may have.

Further, in the construction machine of the present disclosure, the vehicle body has a movable portion and a non-movable portion, and the tow string may be attached to the non-movable portion.

Further, the construction machine of the present disclosure may have a track for driving the vehicle body.

Further, the method of relieving a construction machine of the present disclosure is a method of relieving a construction machine capable of entering an inundated area, and a tow string having a lighter specific weight than water is attached to a vehicle body of the construction machine capable of entering the inundated area. The construction machine is rescued from the flooded area by being attached and pulling the vehicle body through the tow string.

According to the present disclosure, construction machinery stuck in a flooded area can be rescued.

It is a side view of the unmanned construction machine which concerns on one Embodiment of this disclosure. It is a rear view of the unmanned construction machine which concerns on one Embodiment of this disclosure. It is explanatory drawing which shows the rescue method of the unmanned construction machine which concerns on one Embodiment of this disclosure. It is explanatory drawing which shows the rescue method of the unmanned construction machine which concerns on one Embodiment of this disclosure.

Hereinafter, an embodiment of the construction machine and the rescue method for the construction machine of the present disclosure will be described with reference to the drawings. In the following description, an unmanned construction machine that performs work by remote control will be illustrated.

FIG. 1 is a side view of the unmanned construction machine 1 according to the embodiment of the present disclosure. FIG. 2 is a rear view of the unmanned construction machine 1 according to the embodiment of the present disclosure.
As shown in FIGS. 1 and 2, the unmanned construction machine 1 has a vehicle body 2 and a remote control device 3 attached to the vehicle body 2. The remote control device 3 wirelessly remotely controls the operation of the vehicle body 2, and is detachably installed on the roof of the cab 11 which is the driver's cab of the vehicle body 2.

The remote control device 3 has a wireless antenna, receives radio waves (remote control waves) transmitted from an external remote control device, and receives radio waves (control state waves) from the remote control device 3 to the external remote control device. To send. The remote control wave includes a control command for the remote control device 3 as information. Further, the control state wave includes information indicating the control state of the vehicle body 2 by the remote control device 3. The remote control device 3 causes the vehicle body 2 to perform a desired operation by transmitting and receiving such a remote control wave and a control state wave to and from an external remote control device.

The vehicle body 2 of the present disclosure is a dump truck that works in a flooded area, and enters the flooded area by a track 12. The target machine of the unmanned construction machine 1 may be, for example, an excavator car, a bulldozer, a crane car, or the like. The vehicle body 2 has a traveling body 10 traveling by the track band 12 and a rear dump type loading platform 20 (movable portion) mounted on the traveling body 10. The loading platform 20 is tilted rearward of the vehicle body 2 with respect to the chassis frame 14 (non-movable portion) of the traveling body 10.

As shown in FIG. 1, the traveling body 10 has a cab 11, a track 12, an engine room 13, and a chassis frame 14. The cab 11 is arranged at the front portion of the vehicle body 2. Inside the cab 11, operation devices such as operation buttons and operation levers are provided, and a driver's seat on which the driver sits is provided. The engine room 13 is arranged behind the cab 11. In the engine room 13, an engine for driving the track 12 and a hydraulic pump for supplying oil for tilting the loading platform 20 are arranged.

The track 12 is formed by shoes (tracks) connected in an endless band shape. As shown in FIG. 2, the crawler belts 12 are arranged in pairs on the left and right sides of the vehicle body 2, and are driven by a driving wheel mechanism 12a attached to the lower part of the chassis frame 14. The driving wheel mechanism 12a is driven by an engine arranged in the engine room 13 and causes a pair of left and right crawler belts 12 to run endlessly.

The chassis frame 14 is a steel material assembled in a frame shape, and as shown in FIG. 1, extends in the front-rear direction of the vehicle body 2. Further, as shown in FIG. 2, the chassis frame 14 is arranged inside the pair of crawler belts 12 in the left-right direction of the vehicle body 2. The chassis frame 14 supports a cab 11, an engine room 13, a loading platform 20, a hydraulic cylinder device (not shown) that lifts the loading platform 20, and the like. The hydraulic cylinder device is expanded and contracted by a hydraulic pump arranged in the engine room 13, and the loading platform 20 is tilted to the rear of the vehicle body 2.

As shown in FIG. 2, the rear portion of the chassis frame 14 is formed by a rear frame 17 (beam portion) extending in the left-right direction of the vehicle body 2. The rear frame 17 connects between a pair of left and right side frames (not shown) of the chassis frame 14. Projecting portions 15 and 16 projecting rearward of the vehicle body 2 are joined to the rear frame 17. The projecting portions 15 and 16 are provided with support shaft portions 18 and 19 that rotatably support the rear portion of the loading platform 20 around an axis extending in the left-right direction of the vehicle body 2.

The loading platform 20 has bearing portions 21 and 22, and a loading platform main body 23. The bearing portions 21 and 22 are provided in the lower part of the loading platform main body 23 and are supported by the support shaft portions 18 and 19. The loading platform main body 23 has a pair of left and right side plate portions 24, 25 and a tilt 26 arranged between the rear ends of the pair of side plate portions 24, 25. The tilt 26 of the present disclosure is a downward opening type that opens and closes around the upper end portion 26a thereof. Support plate portions 27, 28 that rotatably support the upper end portion 26a of the tilt 26 around the axis extending in the left-right direction of the vehicle body 2 are erected above the rear ends of the side plate portions 24, 25.

A tow string 30 is attached to the vehicle body 2 having the above configuration. The tow string 30 has a string body 31 and a float 32 attached to the string body 31. The string body 31 is, for example, a wire rope in which a stainless steel wire is woven. The float 32 is, for example, Styrofoam having a lighter specific gravity than that of the string body 31. A plurality of floats 32 are attached to the string main body 31 so that the total specific gravity is lighter than that of water. In the present disclosure, the float 32 is formed in a cylindrical shape (ring shape), and the string main body 31 is passed through the plurality of floats 32.

The tow string 30 does not necessarily have to be provided with a float 32 as long as the string body 31 has a lighter specific gravity than water. For example, the string main body 31 can secure the same strength as a stainless wire rope, and a carbon rope or the like having carbon reinforced fibers lighter than stainless steel as a wire may be used. Further, in the flooded area, in order to improve the visibility of the tow string 30, at least one of the string body 31 and the float 32 may be coated with a red or yellow fluorescent paint, or in water or in the dark. A phosphorescent paint may be applied so that it shines.

The tow string 30 is attached to the chassis frame 14 as shown in FIG. A shackle 33 for connecting the string body 31 is attached to the protrusions 15 and 16 of the chassis frame 14. The shackle 33 is attached to a through hole (not shown) formed in the protrusions 15 and 16 below the support shafts 18 and 19. A faucet formed at one end of the string body 31 is connected to the shackle 33 attached to the protrusion 15, and the shackle 33 attached to the other protrusion 16 is formed at the other end of the string body 31. The faucet is connected.

The tow cord 30 attached in this way is preferably placed on the upper part of the vehicle body 2. That is, both ends of the tow string 30 are attached to the chassis frame 14, and the position between both ends of the tow string 30 is supported by the upper portion of the vehicle body 2. The tow string 30 of the present disclosure is placed on the upper part of the loading platform 20. Here, the upper part of the vehicle body 2 means the upper part of the structure arranged above the chassis frame 14. Therefore, the upper part of the vehicle body 2 includes the upper part of the cab 11, the upper part of the engine room 13, and the like in addition to the upper part of the loading platform 20. Further, it is preferable that such a tow string 30 is arranged at the rear portion of the vehicle body 2. As shown in FIG. 1, the tow string 30 of the present disclosure is mounted on the rear part of the loading platform 20. Here, the rear part of the vehicle body 2 means the rearmost region when the total length of the vehicle body 2 in the front-rear direction is divided into three equal parts.

A tow cord temporary fixing member 40 for temporarily fixing the tow string 30 to the loading platform main body 23 is attached to the loading platform 20. As shown in FIG. 2, the tow string temporary fixing member 40 of the present disclosure is a C-shaped vise that sandwiches the support plate portions 27 and 28, respectively, and the tow string 30 is passed through the C-shaped groove. The tow string 30 is erected between a pair of left and right tow string temporary fixing members 40, and is arranged above the side plate portions 24, 25 and the tilt 26 of the loading platform main body 23. The tow string temporary fixing member 40 does not come off from the loading platform 20 due to impact or vibration during normal work, and the tow string 30 has a strength that allows it to come off from the loading platform 20 when it is forcibly pulled by a construction machine such as a backhoe. It sandwiches 20.

Next, the rescue method of the unmanned construction machine 1 of the present disclosure will be described with reference to FIGS. 3 and 4.
3 and 4 are explanatory views showing a rescue method of the unmanned construction machine 1 according to the embodiment of the present disclosure. In these figures, the reference numeral F1 indicates the rough terrain (bottom surface) of the inundated area, and the reference numeral F2 indicates the water surface of the inundated area.

The unmanned construction machine 1 has a vehicle body 2 that can enter the flooded area. The vehicle body 2 is a dump truck that travels on the track 12, and can enter even on rough terrain F1 in a flooded area. The unmanned construction machine 1 transports earth and sand, rocks, etc. excavated by another construction machine such as a backhoe while at least a part of the vehicle body 2 is submerged below the water surface F2 in the flooded area. As described above, the unmanned construction machine 1 is configured to be capable of transporting in semi-water by an external remote control device (not shown).

When such an unmanned construction machine 1 does not operate normally in a flooded area (for example, when it is stuck), the unmanned construction machine 1 is rescued from the flooded area by pulling the vehicle body 2 through the tow string 30. do. That is, as shown in FIG. 3A, the tow string 30 is attached to the vehicle body 2 of the unmanned construction machine 1. Since the tow string 30 is placed on the loading platform 20 at the upper part of the vehicle body 2, the tow string 30 is hard to be submerged even when the unmanned construction machine 1 is stuck in the flooded area, and the tow string 30 can be easily attached to the tow string 30. Can be accessed.

The tow string 30 is temporarily fixed to the loading platform 20 by the tow string temporary fixing member 40. As shown in FIG. 3B, for example, when the tow string 30 is forcibly pulled by the excavator 101 of another construction machine 100, the tow string temporary fixing member 40 is disengaged from the loading platform 20 and the vehicle body 2 can be towed. It becomes. By temporarily fixing the tow string 30 in this way, it is possible to prevent the tow string 30 from interfering with normal work except at the time of rescue.

Since the tow string 30 is placed on the loading platform 20 at the rear of the vehicle body 2, it becomes easy to hook the tow string 30 on the excavator 101. For example, when the tow string 30 is mounted on the front part of the vehicle body 2, the construction machine 100 side operates the excavator 101 so as not to damage the cab 11 and the remote control device 3 on the roof of the cab 11 ( It must be operated manually or remotely), and the operator is required to have skill. On the other hand, in the case of the loading platform 20 at the rear of the vehicle body 2, there is little problem even if the excavator 101 hits the loading platform 20 a little.

Further, the vehicle body 2 has a chassis frame 14 and a loading platform 20 that is movable with respect to the chassis frame 14, and the tow string 30 is attached to the chassis frame 14 of the non-movable portion. The chassis frame 14, which is a non-movable portion, is the attachment position of the tow string 30, and the positional relationship does not change. Therefore, by pulling the tow string 30, the vehicle body 2 can be moved without moving the loading platform 20. Further, if it is desired to push the vehicle body 2 in addition to pulling it, it is necessary to temporarily release the tow string 30 from the excavator 101 and push the vehicle body 2. Here, as shown in FIG. 4, the temporarily separated tow string 30 has a lighter specific gravity than water, so that it can float on the water surface F2.

When the tow string 30 floats on the water surface F2, the tow string 30 can be picked up again by another construction machine 100. Since the tow string 30 has a string body 31 and a float 32 attached to the string body 31, it is possible to give strength on the string body 31 side and adjust the buoyancy on the float 32 side. .. Therefore, the selection range of the material of the string main body 31 is widened, and it becomes easy to give the string main body 31 the strength to pull the unmanned construction machine 1.

As described above, according to the above-mentioned disclosure, when the unmanned construction machine 1 is stuck in the flooded area, the unmanned construction machine does not have a person risking to tie the tow string 30 to the unmanned construction machine 1. 1 can be rescued from the flooded area.

The present disclosure is not limited to the above embodiment, and for example, the following modifications can be considered.

(1) In the above embodiment, a C-shaped vise is illustrated as the tow string temporary fixing member 40, but the tow string 30 is forcibly pulled by a construction machine such as a backhoe because it does not come off from the vehicle body 2 due to impact or vibration during normal work. Any configuration may be adopted as long as it is configured to be detached from the vehicle body 2 when pulled by.

(2) In the above embodiment, the configuration in which the tow string 30 is attached to the vehicle body 2 via the shackle 33 is illustrated, but the shackle 33 is installed in consideration of commutativity when the tow string 30 is worn. , Not always necessary.

(3) Further, in the above embodiment, the tow string 30 has the rear part of the vehicle body 2 as the traction point, but the existing traction point at the front part of the vehicle body 2 may be used. In this case, the tow string 30 may be placed (temporarily fixed) on the front portion of the vehicle body 2 (for example, on the roof of the cab 11).

1 Unmanned construction machinery (construction machinery)
2 Body 12 Track 14 Chassis frame (non-movable part)
20 Loading platform (moving part)
30 Tow string 31 String body 40 Tow string temporary fixing member

Claims (5)

A construction machine that can enter the flooded area
A car body with a loading platform at the rear and
It has a tow cord that is attached to the vehicle body and has a lighter specific density than water.
The tow cord is a construction machine in which an intermediate portion is arranged so as to pass over a pair of left and right side plate portions on the loading platform. The construction machine according to claim 1, wherein the tow string has a string body and a float attached to the string body and having a lighter specific gravity than the string body. The first or second aspect of the present invention, wherein the tow string mounted on the vehicle body is temporarily fixed to the vehicle body, and the tow string temporary fixing member is released when the tow string is towed. Construction machinery. The vehicle body has a movable portion and a non-movable portion.
The construction machine according to any one of claims 1 to 3, wherein the tow cord is attached to the non-movable portion. The construction machine according to any one of claims 1 to 4, which has a track for driving the vehicle body.

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