JP2831142B2 - Automatic roadbed excavator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic roadbed excavator used for a work for replacing a roadbed on a railway road.

[0002]

2. Description of the Related Art In the case of replacing a railway track, the work of excavating a group of crushed stones under a rail and scraping the same to the outside has conventionally been mostly performed manually. In some rare cases, large machines are used from above the rails.
JP-B-60-38482, JP-B-60-3848
As seen in Japanese Patent Publication No. 3 (2003), a so-called non-closed type device which is used under a rail to pass through a train has been developed.

[0003]

However, there is a disadvantage that the work by manpower requires not only man-hours but also a long time for the replacement work. Had the biggest drawback of preventing trains from passing. Furthermore, conventional equipment that can perform work while passing through a train is heavy and difficult to transport, and has a disadvantage that it cannot be used because the width dimension (dimension in the longitudinal direction of the excavated portion) cannot be changed. On the other hand, some wedges need to be driven manually when passing through the train, and some wedges are very cumbersome.In the latter case, multiple wedges are required. There was a problem that it was necessary to draw. Accordingly, a main object of the present invention is to provide a non-closed type automatic excavator which is lightweight, easy to carry, has a variable width, and is easy to use.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a digging chain for digging a crushed stone group under a railroad track floor and scraping the crushed stone outward, and supporting the digging chain. And a support body that can be propelled in the front-rear direction. The support body is characterized in that a plurality of support parts divided in the longitudinal direction are removably connected to each other and assembled. In the excavator, it is preferable that the excavator is provided with operation means for remotely controlling at least a drive unit of the excavation chain. Further, it is preferable that the excavator includes a self-propelled hydraulic unit that supplies pressure oil to at least a driving unit of the excavation chain. In the excavator,
It is preferable to provide a reaction force receiver with a lifting jack for propelling the support in the front-rear direction.

[0005]

According to the above construction, the support is divided into a plurality of parts to reduce the weight and to assemble the support freely. Further, the excavation chain or the like is remotely operated by the operation means while observing the excavation status. In addition, the self-propelled movement of the hydraulic unit facilitates movement of the excavator. In addition, the crossties and the like are easily supported by the lifting jacks of the reaction force receiver.

[0006]

An embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1, below a rail 2 supported on a sleeper 1, a hydraulic drilling chain 3, a support 4,
The main parts of the excavator such as the hydraulic cylinder 5 and the reaction force receiver 6 are installed, while the hydraulic unit 7 is installed beside the track. Then, in the roadbed replacement work, the excavation chain 3 excavates the old crushed stone group of the roadbed and scrapes it to the side of the track. At this time, the support 4 of the excavation chain 3 is moved forward by the extension operation of the hydraulic cylinder 5. Excavate while propelling to the right and stop excavation after excavating an appropriate distance. Next, after the support 4 is fixed, the reaction force receiver 6 is moved forward by the contraction operation of the hydraulic cylinder 5, and a new crushed stone group is put behind the reaction force receiver 6, and the same process is repeated to perform the work like a so-called worm. Things.

As shown in FIGS. 2 and 3, the support 4 is formed in a rectangular tube shape, and is divided into two longest main support portions 4a and 4b. Two sub-support portions 4c, 4d each having a length of about 1/3 of the main support portions 4a, 4b, and a chain at both ends having a length approximately equal to those of the sub-support portions 4c, 4d The driving parts 4e and 4f are divided into a total of six parts, and are assembled by being connected to each other in a fitting manner. In the example shown,
The fitting projection 8a (see the hatched portion in the figure) of the left main support portion 4b is fitted and fastened to the fitting recess 8a of the right main support portion 4a, and the main support portions 4a, 4b Fitting recess 8
The fitting projections 9b, 9c of the sub-support portions 4c, 4d are fitted and fastened to the b, 8c, and the fitting recesses 8d, 8e of the sub-support portions 4c, 4d. The fitting projections of the respective chain drive portions 4e and 4f (see shaded portions in the figure) 9
d and 9e are fitted and fastened. In the figure, 10a, 1
A bracket 0b is connected to one end of the hydraulic cylinder 5.

[0008] Hydraulic lifting jacks 11a and 11b which slightly move up and down are attached to both left and right portions of a reaction force receiver 6 which supports the other end of the hydraulic cylinder 5. Also,
The hydraulic motor 3A and the hydraulic cylinder 5 of the excavating chain 3
An engine (not shown) is mounted on the hydraulic unit 7 for supplying pressure oil to the lifting jacks 11a and 11b, so that the hydraulic unit 7 can run on its own. Further, a hand-held remote control panel 12 is connected to the hydraulic unit 7 to operate the excavation chain 3, to propel the support 4 back and forth, and to raise and lower the jacks 11a, 11a.
The vertical movement of b is remotely controlled.

Thus, in this embodiment, the support 4
Is divided into six support parts 4a to 4f, so that the load can be reduced by disassembling the support parts into two parts during transportation, etc., and there is a degree of freedom in connection-assembly. When the body parts 4a to 4f are used, the body parts 4a to 4f can be used in an expanded state.
When one or both of 4d is removed, it can be used in a state where the width is reduced. In addition, the operation of the excavation chain 3, the support 4 and the lifting jacks 11a and 11b can be intensively performed by button operation while monitoring the excavation status with the hand-held remote control panel 12. Further, since the hydraulic unit 7 is a self-propelled type, it is not necessary to draw a plurality of electric cables or the like as in the conventional example. In addition, since the lifting jacks 11a and 11b support the sleepers 1 and the like, it is not necessary to drive wedges or the like with human power as in the conventional example.

[0010] The present invention is not limited to the above embodiment,
It goes without saying that various changes can be made without departing from the spirit of the present invention.

[0011]

As described above, according to the present invention, since the support is divided into a plurality of support portions, it can be lightly transported by being disassembled during transportation, and has a high degree of freedom in assembly. The effect of being able to change the width dimension and being convenient is obtained. Further, the propulsion of the support body and the like can be remotely controlled by the operating means while observing the state of excavation, thereby reducing the number of workers and increasing safety. In addition, the self-propelled operation of the hydraulic unit facilitates the movement of the excavator and improves workability. In addition, the sleeper and the like are easily supported when passing through the train by the lifting jacks of the reaction force receiver, and workability is improved.

[Brief description of the drawings]

FIG. 1 is an overall plan view showing one embodiment of the present invention.

FIG. 2 is an assembled perspective view of the support.

FIG. 3 is an exploded perspective view of the support.

[Explanation of symbols]

 3 Excavation Chain 4 Support 5 Hydraulic Cylinder 6 Reaction Force Receiver 7 Hydraulic Unit 11a, 11b Elevating Jack 12 Handheld Remote Control Panel

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshitada Aso 3000 Tana, Sagamihara-shi, Kanagawa Mitsubishi Heavy Industries, Ltd. Sagamihara Works (72) Inventor Nobuo Daikouji 2-5-1 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Heavy Industries, Ltd. (72) Inventor Nobuo Mezaki 2-8 Shimbashi, Kashiwazaki-shi, Niigata Ueki-gumi Co., Ltd. (72) Inventor Hiroshi Satake 124, Shimizu 3 of Narumi-cho, Midori-ku, Nagoya-shi, Aichi (72) Invention Author Masahiko Hayami 3-1, 135, Majima, Fukuju-cho, Hashima City, Gifu Prefecture (72) Inventor Juichi Tanase, 1-8-13, Oyama-cho, Kuwana City, Mie Prefecture (56) References Japanese Unexamined Patent Publication No. 64-1803 (JP, A) 62-101702 (JP, A) JP-A-57-44001 (JP, A) JP-A-62-63719 (JP, A) JP-A-51-137206 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E01B 27/0 Four

Claims (4)

(57) [Claims] 1. An excavating chain for excavating a group of crushed stones under a rail on a railway floor and scraping the crushed stone outward, and a support capable of supporting the excavating chain and propelling in the front-rear direction, wherein the support is An automatic roadbed excavator, wherein a plurality of support portions divided in a longitudinal direction are detachably connected to each other and assembled. 2. The automatic roadbed excavator according to claim 1, further comprising operating means for remotely operating at least a drive unit of the excavation chain. 3. The automatic roadbed excavator according to claim 1, further comprising a self-propelled hydraulic unit that supplies pressurized oil to at least a driving unit of the excavation chain. 4. The automatic roadbed excavator according to claim 1, further comprising a reaction force receiver with a lifting jack for propelling the support in the front-rear direction.