JPH10148086A - Horizontal bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install and hold a body horizontally on a slope or a ground surface with irregularities simply and accurately. SOLUTION: The horizontal bearing device has a base frame 2, on which a body is placed, a plurality of legs 5 being downwards mounted on the base frame 2 and capable of being expanded and contracted mutually independently, a grounding sensor emitting a signal when the legs 5 are grounded, a distance sensor transmitting a detecting signal when a distance between the base frame 2 and a ground surface reaches a fixed value, an inclination sensor detecting the inclination of the base frame 2 and a controller controlling the expansion and contraction of a plurality of the legs 5. When one of a plurality of the legs 5 is grounded, the controller controls the legs 5 excepting the leg 5 grounded under the state so as to be extended until each is grounded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a horizontal support device used to hold an object horizontally on uneven or sloping ground.

[0002]

2. Description of the Related Art When driving rock bolts for reinforcement on a wall of a shaft excavated on rock or the like, or when providing a scaffold for wall construction, it is necessary to install a drilling device and a scaffold almost horizontally. is there. However, since the bottom surface of the shaft is not horizontal but a surface with many irregularities and inclinations, it is not easy to place an object horizontally thereon.

Conventionally, in such a case, a block or a stone block is sandwiched under an object such as a drilling device or a scaffold to level the body. In such a method, a desired horizontal state is obtained. It was laborious and time-consuming to obtain, and very difficult to accurately level. For this reason, the installation work of the aircraft has been a major factor in reducing the overall work efficiency. Not only in the case of the above-mentioned shaft excavation, there are many cases where it is desired to horizontally place an object on a slope, but in any case, the above-described problem has occurred.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a convenient device that can easily and accurately hold an object horizontally on a sloped or uneven ground.

[0005]

Means for Solving the Problems In order to solve the above problems, the present invention has the following configuration. That is, the horizontal support device according to the present invention emits a signal when a base frame on which an object is placed, a plurality of legs provided downward on the base frame and capable of extending and contracting independently from each other, and when the legs touch the ground. A ground sensor, a distance sensor that transmits a detection signal when a distance between the base frame and the ground reaches a predetermined value, a tilt sensor that detects a tilt of the base frame, and expansion and contraction of the plurality of legs. A control device for controlling, the control device, when one of the plurality of legs is in contact with the ground, in that state, controls to extend the legs other than the grounded leg until each of them touches the ground. Features.

The horizontal support device is used to hold an object thereon, and is usually suspended by a crane or the like, carried into a desired place, and installed. When the suspended device is lowered, when the distance to the ground reaches a predetermined value, the distance sensor emits a signal, so that the lowering speed can be reduced to avoid collision with the ground. Also, when one leg touches the ground, the control device extends the other leg and grounds it based on the grounding signal, so that the base frame is installed horizontally even if the ground has slopes or irregularities. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention shown in the drawings will be specifically described below. This horizontal support device 1 is equipped with a shaft drilling device M as an example of an object, and is provided with four arms 3 extending radially in four directions from a base frame 2 provided at the center thereof. ing. Each of the arms is provided with an extendable downward leg 5 at the distal end thereof. Since the four arms 3,... Are provided radially, V-shaped spaces 4, 4, which enter toward the center of the base frame 2, are formed in these spaces. The number of arms is 4 in the illustrated example.
The number is not limited to three, and may be three or more. However, it is preferable to use four for normal use because the stability is good and the horizontal adjustment is easy.

The leg 5 is of an outrigger type in which a grounding member 8 is attached to a lower end of a rod of a hydraulic cylinder 7. The illustrated hydraulic cylinder 7 is a telescopic cylinder that expands and contracts in two stages, and can obtain a large amount of expansion and contraction with a relatively short overall length as compared with a normal hydraulic cylinder. As shown in the figure, the grounding member 8 is provided with three claws 8a,... On the bottom surface, and is attached to the cylinder 7 via a spherical joint 9, and a predetermined range in any direction. It can be tilted freely.

Between the upper end of the leg 5 and the mounting member 3a of the arm 3, there is provided a spring 10 for pushing the two apart. A limit switch 11 as a ground sensor is attached to the attachment member 3a at the tip of the arm 3, and a bar 12 facing the limit switch 11 is provided at the upper end of the leg 5. When the grounding member 8 is not grounded, both are pushed and separated by the spring 10, but when the grounding member 8 is grounded and the spring 10 is compressed, the bar 12 pushes the limit switch 11 to operate.

The central part of the radial arms 3 is the base frame 2, on which a rotary table 15 supported by roller bearings is provided. Rotary table 1
Reference numeral 5 is for supporting the drilling device M so as to be rotatable in a horizontal plane, and can be normally and reversely rotated by a driving gear on the side of the turning motor 17 and a ring gear meshing therewith. A pair of upper and lower support frames 20 and 21 extending in opposite directions are provided on the turntable 15, and the pair of slide frames 2 is provided by these support frames.
2, 23 are movably supported. These slide frames are formed by a pair of left and right frames 22a, 22a and 23a, 23a provided at intervals, respectively, by a horizontal frame 22b,
, 23b, .... A hydraulic motor 25 for sliding is provided at the base of the support frames 20 and 21, that is, at the center of the rotary table 15, and a pinion provided on a rotary shaft thereof is provided on each of the sliding frames 22 and 21.
23 meshes with rack gears 22c and 23c. Therefore, when the hydraulic motor 25 rotates forward and backward, the pair of slide frames 22 and 23 simultaneously slide in opposite directions. Reference numerals 27,... In the figure denote cam followers for guiding the movement of the slide frame.

A guide cell 30 is provided on one slide frame 22.
Is installed. The guide cell 30 includes the slide frame 22
The base of the support pipe 32 is pivotally attached to the slide frame 22 by a shaft 22d. In addition, the guide cell 30
The rod of the hydraulic cylinder 34 for elevating and lowering fitted in the support pipe 32 and the rod of the hydraulic cylinder 35 for tilting whose base is attached to the slide frame 22 are connected to the rear surface of the supporting pipe 32. Therefore, if the hydraulic cylinder 34 is expanded and contracted, the guide cell 30 moves in the axial direction of the hydraulic cylinder, and if the hydraulic cylinder 35 is expanded and contracted,
The guide cell 30 tilts.

A hydraulic device 40 is mounted on the slide frame 23 opposite to the above. The illustrated hydraulic device includes two large and small hydraulic pumps, which are distributed to the left and right sides of the slide frame 23 (40a, 40b). 45 in the figure
Is a control panel having a built-in control device, 46 is a starting board of the hydraulic pump, and 49 is a pendant for remote control.

A hydraulic rock drill 55 is mounted on the guide cell 30. That is, the sprocket wheels 5 are provided at the front (lower) end and the rear (upper) end of the guide cell 30.
3, 54 are provided, and a chain 57 along the longitudinal direction of the guide cell 30 is hung on these. At the rear end of the guide cell 30, a feed hydraulic motor 60 is provided, and the chain is hung on a sprocket wheel attached to a rotation shaft of a speed reducer 60a integrated with the motor. 61, 61 are guide rollers for guiding this chain.

The front (lower) end of the guide cell 30 is provided with a foot pad 30a for pressing and fixing the guide cell against the ground, and the chain 5 is provided at an intermediate portion thereof.
A carriage 63 to which is fixedly provided is provided so as to be able to reciprocate along its longitudinal direction. The rock drill 55
Are fixedly mounted on the carriage 63. Therefore, when the hydraulic motor (feed motor) is rotated forward and backward, the rock drill 55 mounted on the carriage 63 moves back and forth along the guide cell 30. In the figure, 55a is a rock drill rotating device, 55b is its hitting device, 64 is a hose terminal, 65 is a hose reel unit, 66 is a hose hanger, 67 is a drilling rod, and 68 is a lock bit.

A pair of left and right wire attachments Ff, Ff are provided near the front end of the one slide frame 22, and one wire attachment is provided near the rear of the other slide frame 23 at the left and right center position. A tool Fr is provided. In the drilling device 1, together with the drilling device M mounted on the drilling device 1, the upper portions of the wires connected to the three wire fittings can be gathered in one place and hung horizontally by a hook. In this suspended state, the guide cell 30 is supported in an upright state, and at this time, the machine body is held horizontally. In the illustrated example, the wire attachment is provided on the slide frame. However, the wire attachment may be provided at an appropriate place on the base frame 2 (a place where the whole can be hung horizontally).

Next, a control system of the apparatus will be described. An ultrasonic distance sensor 70 for detecting the distance from the ground is attached to the lower surface of the center of the four legs of the drilling device 1. Further, the control panel 45 is provided with a liquid-type inclination sensor 73 for detecting the inclination of the body,
A signal lamp unit 71 is mounted on the oil cooler 50. This signal lamp unit has three lamps PL1, PL2, blue, yellow and red.
PL3 is provided. Also, the hydraulic unit 40
Above b, a flash lamp FL for warning is provided.

First, when the machine is installed horizontally at a pit excavation site, the "automatic" / "manual" changeover switch of the control panel 45 is switched to "automatic". Then, the detection distance of the ultrasonic distance sensor 70 provided on the lower surface side of the central portion of the body is set to an appropriate distance, for example, 1.5 m. In this state, the machine is lifted by a crane and gradually lowered to a predetermined installation location. When the distance sensor 70 detects the set distance, the yellow signal lamp PL2 is turned on.

When the aircraft is slowly lowered from here,
Eventually, any one of the four legs 5,... Is grounded, and the red signal lamp PL1 is turned on. Then, the remaining three legs extend automatically until they touch the ground. When all the legs 5,... Are grounded, the blue signal lamp PL3 is turned on, so the crane wires are loosened. Thereby, the horizontal support device 1 on which the drilling device including the rock drill is mounted is installed horizontally on the ground. It should be noted that the inclination sensor 7 detects that the body is inclined at a predetermined angle (eg, 5 degrees) or more.
When 3 is detected, the flash lamp FL is turned on and an alarm is issued. In this case, the machine is manually lifted again by the crane, and the above-mentioned installation work is repeated. All of the above movements are performed under program control.

Next, the guide cell 30 is moved to a desired position, and the inclination angle is adjusted to perform perforation.
When the guide cell 30 is moved forward, the hydraulic device 40 moves backward. Thus, even if the guide cell 30 moves, the hydraulic device 40 moves to the opposite side with the movement, so that a stable weight balance can be maintained. The guide cell 3
The inclination angle of 0 can be adjusted within a range of 100 degrees from the horizontal state with the front end part facing downward, and it is possible to take a foot angle (that is, a perforation inclination angle toward the center of the fuselage).

Further, since the guide cell 30, the hydraulic device 40 and the like are mounted on the rotary table 15, the rotary table is rotated by a hydraulic motor to reduce the guide cell to three.
It can be freely turned 60 degrees. In this case, the supply of the hydraulic pressure can be performed at an arbitrary angle using the center joint, so that there is no problem in driving the leg 5.

When the machine is installed horizontally, the wires of the crane are removed, and the hydraulic device is operated to perform drilling by the rock drill. In this case, since the guide cell 30 can be moved up and down and tilted, it is possible to well pierce a desired position.
During drilling, air is blown from the blow hole of the lock bit, but air and water may be used, or only water may be used. The blowing air or water and the electric power are supplied to the perforating device from outside by a hose. In addition,
The aircraft is at the set angle (for example, 5 degrees) during drilling for some reason
When tilted as described above, the flash lamp FL is turned on and an alarm is issued. Therefore, the operation is stopped, the control panel is switched to "manual", and the appropriate leg 5 is expanded and contracted to correct the horizontal state.

A rotary table 15 is provided on the base frame 2 of the horizontal support device 1, and a guide cell 30 is mounted on the rotary table 15. By rotating the rotary table by a predetermined angle, a concentric circle is formed. Drilling can be performed with a simple operation. Further, by moving the slide frame to which the guide cell 30 is attached back and forth, it is possible to pierce an arbitrary position. In this case, when the slide frame to which the guide cell 30 is attached is moved, the slide frame on which the hydraulic device 40 is mounted is simultaneously moved in the opposite direction, so that the weight balance can be maintained and safety is achieved. Further, since the guide cell 30 can be inclined, it is possible to pierce at a desired angle.

During downward drilling, the guide cells 30 are used in an upright state. However, in the case of performing horizontal drilling such as when a rock bolt for reinforcing the ground is buried in a wall surface, the guide cells are drilled with the guide cell tilted. . In this case, the rear part of the slid guide cell 30 is connected to the two hydraulic units 40a and 40b.
The hydraulic device does not hinder the guide cell from tipping over. When the perforation apparatus 1 is stored in a warehouse with a low ceiling or transported by truck or the like, the guide cell 30 can be brought into a horizontal state in which the guide cell 30 is tilted into the space between the hydraulic units 40a and 40b. Convenient and stable.

After the drilling operation is completed, the horizontal support device 1
When unloading, set the switch on the control panel to "automatic"
Lift the aircraft horizontally with a crane. When the outrigger-type legs 5,... Are all off the ground, they all automatically contract. Then, a signal for storing the legs is transmitted for the time set by the timer. After this set time, the signal stops.

FIG. 11 shows an example different from the above.
In this example, a construction scaffold 101 is attached to the horizontal support device 100. In addition to these, it can be used for various purposes as a base for installing devices that need to be installed horizontally.

[0026]

As is apparent from the above description, the horizontal support device of the present invention supports an object mounted thereon on a sloping ground or an uneven ground with a simple operation in a horizontal state. It has become a useful thing. It goes without saying that this device can be used for various applications other than the above.

[Brief description of the drawings]

FIG. 1 is a perspective view of a horizontal support device equipped with a drilling device for shaft excavation.

FIG. 2 is a front view of a state in which a guide cell is tilted.

FIG. 3 is a plan view thereof.

FIG. 4 is a side view thereof.

FIG. 5 is a side view in a suspended state.

FIG. 6 is a side view in a state where one leg is in contact with the ground.

FIG. 7 is a side view in a state where all the legs are in contact with the ground.

FIG. 8 is a side view showing a state where the guide cell is advanced outward.

FIG. 9 is an explanatory diagram in the case of piercing the lower side of the airframe.

FIG. 10 is a partial sectional view of a leg.

FIG. 11 is an explanatory diagram of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horizontal support device 2 Base frame 3 Arm 5 Leg 15 Rotary table 22, 23 Slide frame 30 Guide cell 40 Hydraulic device 70 Distance sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kaichi Yataya 36, Tojo-cho, Tojo-cho, Hiroshima Prefecture Inside Yamamoto Lock Machine Co., Ltd. (72) Inventor Noboru Teraku 36, Tojo-cho, Hiroshima Prefecture Inside Machine Co., Ltd. (72) Inventor: Yukitaka Kawamoto 36, Tojo-cho, Higashi-gun, Hiroshima Prefecture

Claims (1)

[Claims] 1. A base frame on which an object is placed, a plurality of legs provided downward on the base frame and capable of extending and contracting independently from each other, a grounding sensor for emitting a signal when the legs are grounded, A distance sensor that transmits a detection signal when a distance between the frame and the ground becomes a predetermined value, an inclination sensor that detects an inclination of the base frame, and a control device that controls expansion and contraction of the plurality of legs. And a control device for controlling, when one of the plurality of legs is in contact with the ground, a leg other than the contacted leg in such a state to extend until each of the legs is in contact with the ground.