JP3036811U - Drilling rig - Google Patents

Abstract

(57) [Summary] [Problem] To easily excavate a foundation hole such as a steel tower or a pier in a place where there is almost no space for installing an excavator around a foundation hole, such as a mountain area. SOLUTION: An annular support (1) having a circular through hole (3) in the center has legs (5) projecting downward and teeth (7) arranged in an annular shape. An annular rotating plate (9) having a circular through hole (11) in the center is rotatably mounted on the support, and a driving means (13) is mounted on the annular rotating plate.
And an excavator (21) having no traveling device is mounted on the toroidal rotating plate. Drilling rig.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an excavating device for excavating a foundation hole in the ground when forming a foundation such as a steel tower or bridge pier, and in particular, an excavator is arranged around the foundation hole such as in a mountainous area. This relates to an excavating device for excavating a foundation hole in a place where there is almost no space.

[0002]

[Prior art]

 When excavating a foundation hole in a place where there is almost no space for arranging an excavator around the foundation hole, such as in a mountainous area, a small excavator equipped with a traveling device with an endless track is used. There is.

[0003]

[Problems to be solved by the device]

 However, in this case, since there is almost no space for arranging the excavator around the foundation hole, the excavator is arranged at the position of the foundation hole to be excavated and the foundation hole is opened by the excavator. I have to drill. Even a small excavator is equipped with a traveling device with an endless track, but especially when the diameter of the foundation hole is small, for example, 3 meters or less, the excavator itself will move as the excavation work progresses. It will become impossible to move inside the foundation hole, making excavation work extremely difficult. In particular, since the area near the center of the foundation hole is located directly below the excavator itself, excavation by the excavator is impossible. In addition, there is no space to put a hopper or mocco in the foundation hole, so it is extremely difficult to carry out the excavated earth and sand, and as a result, the efficiency of excavation work decreases. The present invention has been made to solve the above problems.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides the following new excavation equipment.

(1) The circular support having a circular through hole in the center has legs protruding downward and teeth arranged in a circular shape, and the circular support has a circular through hole in the center. A ring-shaped rotating plate provided with is rotatably attached, and the ring-shaped rotating plate is provided with a gear that is rotated by a driving means, and the gear is meshed with the teeth of the ring-shaped supporting body. An excavator having a traveling device mounted on the rotating plate (claim 1).

(2) The periphery of the annular rotating plate is bent downward to form a bending edge, and the annular supporting member is positioned inside the bending edge, The excavator according to claim 2, wherein a rotating plate is slidably fitted on the annular support.

[0007]

[Action]

 [Excavator according to claim 1] In the excavator according to claim 1, when the gear provided on the annular rotating plate is rotated by the drive means, the gear meshes with the teeth of the annular support. Therefore, the annular rotation plate rotates with respect to the annular support. That is, if the gear is rotated in a certain direction, the annular rotating plate rotates in a certain direction with respect to the annular support, and if the gear is rotated in the opposite direction, the annular rotating plate has an annular shape. Rotate in the opposite direction to the support. Since the excavator having no traveling device is mounted on the circular rotary plate, the excavator also rotates together with the circular rotary plate. Therefore, it is possible to excavate the inside of the circular through hole at the center of the annular rotating plate and the outside of the annular rotating plate by excavating the annular rotating plate while excavating the foundation hole. That is, when excavating a narrow foundation hole with a conventional excavator equipped with a traveling device using an endless track, the excavator must rotate within the foundation hole with the center of the excavator body as the center of rotation. However, the excavating device of claim 1 rotates itself together with the circular rotary plate about the center of the circular rotary plate. In other words, the excavating device of claim 1 can easily excavate the vicinity of the central portion of the foundation hole. Since it is also possible to place a hopper or mocco on the circular rotary plate, the earth and sand excavated by the excavator in the excavator is placed on the hopper or mocco mounted on the circular rotary plate. It is also possible to hang the hopper and mocco outside with a crane.

[Excavator according to claim 2] In the excavator according to claim 2, the peripheral edge of the annular rotating plate is bent downward to form a bent edge, and the annular shape is formed inside the bent edge. By slidingly fitting the annular rotating plate on the annular supporting body with the supporting body positioned, the annular rotating plate is held concentrically with the annular supporting body.

[0009]

[Embodiment of the invention]

 Next, an embodiment of the present invention will be described with reference to the accompanying drawings. Reference numeral 1 is an annular support. The annular support 1 is provided with a circular through hole 3 at the center and a plurality of legs 5, 5 ... The leg 5 is made of H-shaped steel as an example. The annular support 1 is provided with teeth 7, 7 ... In a circular or radial shape at the periphery of the circular through hole 3. The teeth 7, 7 ... May be arranged on the outer peripheral edge of the annular support 1. For example, each tooth 7 is formed by fixing a substantially cylindrical body in the horizontal direction. An annular rotation plate 9 is rotatably attached on the annular support 1. The circular rotary plate 9 has a circular through hole 11 at the center. The annular rotating plate 9 is provided with a gear 15 which is rotated by a driving means 13 such as a motor, and the gear 15 is meshed with the teeth 7 of the annular support 1. An excavator 21 having no traveling device is mounted on the annular rotating plate 9. The excavator 21 is provided with an appropriate excavation means 27 such as a shovel or a bucket at the tip of an arm 25 attached to the boom 23. The excavator 21 may be equipped with a turning device. Reference numerals 31 and 33 are a hopper and a mocco mounted on the annular rotating plate 9, respectively. Reference numeral 35 is a cylindrical liner plate fixed to define the outer periphery of the foundation hole. The excavator 21 excavates the inside of the circular through hole 11 (the circular through hole 3 at the center of the annular support 1) in the center of the annular rotating plate 9 and also the outer peripheral edge of the annular rotating plate 9 and the inner peripheral edge of the liner plate 35. Also drill between.

The ring-shaped rotating plate 9 must always be held concentrically with the ring-shaped support 1. In order to keep the annular rotating plate 9 always concentric with the annular support 1, the peripheral edge of the annular rotating plate 9 is bent downward to form a bent edge 9a. It is desirable that the annular rotating plate 9 is slidably fitted onto the annular support 1 with the annular support 1 being positioned inside. In the illustrated example, spacers 41, 41 ... For adjusting the distance from the outer peripheral edge of the annular support 1 are attached to the inner surface of the bent edge 9a of the annular rotating plate 9.

[0011]

[Effect of the invention]

 [Excavator of claim 1] The excavator in the excavator of claim 1 rotates itself together with the circular rotary plate about the center of the circular rotary plate. It is possible to easily excavate not only on the outside but also in the circular through hole in the center of the annular rotating plate including the vicinity of the central part of the foundation hole. Therefore, according to the excavating device of claim 1, even when the foundation hole having a small diameter is formed in a place where there is almost no space for disposing the excavator around the foundation hole, such as in a mountainous area. The excavation work can be performed easily. Since it is also possible to place the hopper and mocco on the circular rotary plate, the earth and sand excavated by the excavator in the excavator can be placed on the hopper and mocco mounted on the circular rotary plate. It is also possible to put it on and hang the hopper or mocco outside by a crane. Therefore, high work efficiency can be obtained.

[Excavation device according to claim 2] In the excavation device according to claim 2, the peripheral edge of the annular rotating plate is bent downward to form a bent edge, and the circular shape is formed inside the bent edge. The annular rotating plate is slidably fitted onto the annular supporting member with the annular supporting member positioned, so that the annular rotating plate is held concentrically with the annular supporting member.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of a usage state of a drilling device according to the present invention.

FIG. 2 is a side view showing an example of a use state of the excavator.

FIG. 3 is a bottom view of an annular rotating plate.

FIG. 4 is a plan view of an annular rotating plate.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 annular support 3 circular through hole 5 leg 7 tooth 9 annular rotating plate 9 a bent edge 11 circular through hole 13 driving means 15 gear 21 excavator 23 boom 25 arm 27 excavating means 31 hopper 33 mokko 35 liner plate 41 Spacer

Claims (2)

[Utility model registration claims] 1. An annular support having a circular through hole in the center has legs projected downward and teeth arranged in an annular shape, and a circular through hole is formed in the center on the annular support. The provided annular rotating plate is rotatably mounted, the annular rotating plate is provided with a gear that is rotated by a driving means, and the gear meshes with the teeth of the annular support, and the annular rotating plate is An excavator, wherein an excavator having no traveling device is mounted on a plate. 2. The annular rotating plate is formed by bending a peripheral edge of the annular rotating plate downward to form a bent edge, and the annular support is positioned inside the bent edge. The excavator according to claim 1, wherein a plate is slid onto the annular support.