JPH06136959A - Shape steel beam holding device - Google Patents

Abstract

PURPOSE:To hold a shape steel beam consisting of H-type steel regardless of its dimension, and arrange the shape steel beam along a wall without interfering a shape steel beam holding device with the inner wall of a tunnel. CONSTITUTION:On an oscillating frame 2 supported in such a manner as to be capable of oscillating through a horizontal shaft on the top end of the arm of a traveling vehicle, a turning driving device 4 having a shaft orthogonal to the horizontal shaft is pivotally fixed in such a manner as to be capable of oscillating, and a holding arm support frame 8 having a holding arm 11 consisting of a long holding arm 11a and a short holding arm 11b is supported by the turning driving device 4. Since the plate part corresponding to one area of a H-shaped sectional shape steel beam can be held, the shape steel beam can be easily held regardless of its dimension. Further, since the shape steel beam can be lifted with a shape steel beam holding device 1 on the inside of a tunnel by oscillating and rotating the holding arm support frame 8, the shape steel beam holding device 1 never interferes with the inner wall of the tunnel at the time of arranging the shape steel beam.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a shape steel beam gripping device, and more particularly, to a shape steel beam arranged vertically and horizontally inside a tunnel to reinforce the inside of the tunnel during subway construction or the like. The present invention relates to a shaped steel beam gripping device capable of arranging with high efficiency.

[0002]

2. Description of the Related Art In subway construction, in order to reinforce a tunnel excavated before finishing a wall surface, a ceiling wall, and a road surface, steel beam beams made of, for example, H-shaped steel are vertically and horizontally arranged at predetermined intervals inside. It forms a frame. For such reinforcement work, for example, a model steel beam handling vehicle equipped with a model steel beam gripping device having a configuration described later is used.
Hereafter, this is referred to as a side view of the model steel beam handling vehicle in FIG.
The main body of the steel beam handling vehicle is a crawler-type traveling carriage 50, a swing frame 51 on which a vertical axis is swiveled, and a swivel frame 51 that supports the swivel frame 51 so that the main body of the model steel beam handling vehicle can be raised and lowered. Boom 52,
The boom 52 has a working arm including an arm 53 that is swingably supported around a horizontal axis provided at the tip of the boom 52, and has substantially the same configuration as a so-called hydraulic excavator body. The steel beam gripping device 60 is swingably supported by the horizontal shaft 54 at the tip of the arm 53 of the traveling carriage 50.

That is, a swing frame 61 which is swingably supported by a horizontal shaft 54, and a hydraulic pressure which rotates an internal ring gear (not shown) and a pinion which is attached to the swing frame 61 and meshes with the internal ring gear. A rotary drive device 63 including a motor 62, and a rotary drive device 63 that is attached to the rotary drive device 63 to rotate, and is swung by a swing cylinder (not shown) whose one end is pivotally attached to the rotary drive device 63 side, and The upper and lower grip arms 65 and 66 are opened and closed by the open / close cylinder 64. The side surface of the lower gripping arm 66 is formed in an “L” shape, and the upper gripping arm 65 is pivotally attached to the top of the vertical portion of the “L” shape of the lower gripping arm 66 so as to be swingable. As shown in the figure, it is configured to have a "U" shape when the shaped steel beam W made of H-shaped steel is gripped. It should be noted that at the tips of the gripping arms 65 and 66, what protrudes in the opposite direction is a disengagement prevention claw that prevents the gripped steel beam W from disengaging.

Hereinafter, the usage mode of the model steel beam handling vehicle equipped with the model steel beam gripping device 60 having the above-described structure will be described. When the model steel beam W is arranged on the lower surface, it is arranged as shown in FIG. When arranging the shape steel beam W, the boom 53 swings the arm 53, and the shape steel beam gripping device 60 swings to operate the shape steel beam W so that the cross section of the shape steel beam W has an "V" shape. When standing upright, swivel frame 51
Is rotated, and the gripping arms 65 and 66 are rotated by 90 degrees via the rotation drive device 63 by driving the hydraulic motor 62. Then, if necessary, the swing cylinder is operated to adjust the directions of the gripping arms 65 and 66.

[0005]

When the shaped steel beam is held by the shaped steel beam holding device, the holding arm interferes with
For example, it is not possible to dispose a shaped steel beam in close contact with the inner wall of a tunnel. Also, there are several types of model steel beam dimensions, but if the dimensions differ, it is necessary to replace with a model steel beam gripping device that matches that dimension, which is not preferable for improving work efficiency and extremely high work efficiency. Is a bad thing.

[0006] Therefore, an object of the present invention is to provide a model steel beam gripping device which makes it possible to dispose the model steel beam so that it can be brought into close contact with the wall of the underpass with high efficiency.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. Therefore, the characteristic feature of the steel beam gripping apparatus according to the present invention is that the working arm of a traveling vehicle can be raised and lowered freely. A swing frame is swingably supported by a horizontal shaft provided at the tip of the swing shaft, and is swingable by the swing frame about an axis orthogonal to the horizontal axis and swing about an axis orthogonal to the rotation axis. In a model steel beam gripping device having a gripping arm support frame that is freely supported and has a gripping arm for gripping a model steel beam on the opposite side, the gripping arm is composed of a long gripping arm and a short gripping arm. ,
When a force acts from the base end side toward the tip direction when these gripping arms are closed, the gripping pad that holds the plate portion of the shape steel beam is held by the gripping arm through a mechanism for preventing displacement of the shape steel beam that strengthens the contact force. It is mounted on the opposite side of.

[0008]

According to the model steel beam gripping apparatus of the present invention, the horizontal plate portion of the model steel beam is gripped and rotated by rotating the long gripping arm upward and the short gripping arm downward. By changing the positions of the long gripping arm and the short gripping arm, the shaped steel beam gripping device can be arranged in a state in which the shaped steel beam gripping device is located inside the tunnel rather than the shaped steel beam. When a downward force is applied to the tip end in a downward state, the downward force enhances the grasping force of the grasping pad, so that the grasped die steel beam is prevented from slipping off.

[0009]

1 is a side view of a model steel beam gripping device according to an embodiment of the present invention, and FIG. 2a is a side view showing a partial cross section of the model steel beam gripping device.
2b of the arrow A view of FIG. 2a, FIGS. 3a and 3b of the support state explanatory diagram of the gripping pad, FIG. 4 of the explanatory diagram of vertically arranging the shaped steel beams, and the description of standing up the shaped steel beams. This will be described with reference to FIG. 5 and FIG.

As in the conventional example, the main body of the model steel beam handling vehicle equipped with the model steel beam gripping device according to this embodiment is, like the conventional example, a track type traveling carriage 30 and a swing on which a vertical axis is swung. Frame 31 and this swivel frame 31
A hydraulic excavator main body having a so-called well-known configuration, which includes a working arm including a boom 32 that is supported by the boom 32 and an arm 33 that is swingably supported by a horizontal shaft provided at the tip of the boom 32. It has substantially the same structure as.

The arm 33 of the traveling vehicle 30 having the above structure
A model steel beam gripping device 1, which will be described later, is supported by a horizontal shaft 34 provided at the tip end thereof so as to be vertically swingable. That is, by the horizontal shaft 34 provided at the tip of the arm 33, the anti-horizontal shaft 3
The swing frame 2 having a bracket portion protruding in parallel to the fourth side is swingably supported, and a shaft, which is provided on the bracket portion of the swing frame 2 and extends in a direction orthogonal to the horizontal shaft 34, provides a structure described later. The rotary drive device 4 is swingably supported, and the rotary drive device 4 is pivotally mounted at the other end of a swing cylinder 3 which is a hydraulic cylinder having one end side pivotally mounted at the swing frame 2. It is configured to be swung by.

As shown in FIG. 2a, the rotary drive unit 4 comprises a slewing bearing 5 having an internal ring gear 6 and a hydraulic motor 7 having a pinion meshing with the internal ring gear 6, and the internal ring gear A gripping arm support frame 8 for supporting a gripping arm, which will be described later, is fixed to the end surface of the gripper 6, and the gripping arm is opened and closed at the center thereof, that is, at a position corresponding to the rotation center of the internal ring gear 6. A swivel joint 9 having two hydraulic ports (not shown) for supplying and discharging hydraulic oil is attached to the opening / closing cylinder. Since the number of hydraulic ports of the swivel joint 9 is 1/2 that of the conventional one, the reliability thereof can be further improved.

Further, the holding arm supporting frame 8 holds a plate portion corresponding to one screen of a shaped steel beam composed of an H-shaped section having a "V" -shaped cross section, for holding the long holding arm 1.
A gripping arm 11 composed of 1a and a short gripping arm 11b is provided. The long gripping arm 1 of the gripping arm support frame 8 is attached to the lever portion of the short gripping arm 11b.
The tip of the piston rod of the opening / closing cylinder 13 whose bottom side is pivotally attached to the 1a side is pivotally attached, and the extension and contraction of this piston rod causes the short gripping arm 11b to be opened and closed with the gripping arm support pin 10 as a fulcrum. Has been done.

Further, as shown in FIG. 3, the long and short gripping arms 11a and 11b are guided on opposite surfaces so that the distance between the distal ends of the arms is narrow and the distance between the proximal ends is wide. Bars 12 and 12 are fixed to each other, and sliding frame bodies 14 and 1 to be mounted on the guide bars 12 and 12, respectively.
The grip pads 15 and 16 are attached via 4 and
Both gripping pads 15 and 16 are attached by a coil spring 17 in a state in which an upward pulling force in the figure is applied. Therefore, for example, when gripping the shaped steel beam with the gripping arm 11 on the lower side, the own weight of the shaped steel beam acts downward, but this causes the gripping arm 11 to shift downward and the gripping pads 15, 16 to move to the guide bars 12, 16. Since it tries to move to the side with a narrow interval of 12, the gripping pads 15, 16
The gripping force is increased, and the shaped steel beams having different sizes can be freely and reliably gripped without being displaced. By the way, the long gripping arm 11 of the gripping pad 15
The surface opposite to a, that is, the central portion along the longitudinal direction of the short gripping arm 11b bulges toward the long gripping arm 11a side from both ends thereof. This is to ensure that even if the plate portion of the model steel beam to be grasped has a different thickness, this portion is surely grasped.

The usage of the model steel beam handling vehicle equipped with the model steel beam gripping device 1 having the above structure will be described below. First, when the model steel beam W is arranged in the lower side of the tunnel, as shown in FIG. Then, the piston rod of the opening / closing cylinder is reduced to open the gripping arm 11, and the long gripping arm 1
1a is rotated by the rotation drive device 4 so that the rocking frame 2 is horizontally rocked and the piston rod of the opening / closing cylinder is extended to correspond to one section of the cross section of the steel beam W. While holding the plate portion to be lifted, the shaped steel beam W is horizontally lifted. Then, the rocking frame 2 is rocked downward to lower the lifted model steel beam W to a predetermined position. On the other hand, when the model steel beam W is arranged on the upper side, the long grip arm 11a is grasped so as to be on the lower side. Rotate the arm support frame 8,
The boom 32 and the arm 33 are actuated to move up while holding the gripped steel beam W horizontally, and the boom 32 and the arm 33 are horizontally mounted on the top of the steel beam column in an upright state and connected by bolts.

In this case, when the shaped steel beam W is arranged on the lower side, the gripping arm 11 faces downward, and conversely, the shaped steel beam W is arranged.
When arranging on the upper side, the gripping arm 11 faces upward, and in any case, the shaped steel beam W is located on the wall side of the shaped steel beam gripping device 1, so that the lower surface of the tunnel or The shape steel beam gripping device 1 does not interfere with the ceiling wall, and since the plate portion of the shape steel beam W is gripped, it is necessary to replace the shape steel beam gripping device 1 as in the conventional case. Different types of steel beams can be easily gripped.

Next, the case where the shaped steel beam W is erected will be described with reference to FIG. 5. The plate portion corresponding to one drawing of "D" of the shaped steel beam W is attached to the upper side of the long gripping arm 11a. After holding the workpiece, the boom 32 or the arm 33 is operated to lift the gripped steel beam W, and the rotation driving device 4
The gripping arm support frame 8 is rotated by 90 degrees. The shaped steel beam gripping device 1 rotates the shaped steel beam W in the direction in which the shaped steel beam W is on the inner wall side and the shaped steel beam gripping device 1 is inside the tunnel, and also swivels the swivel frame 31 to move the boom 32.
Alternatively, the arm 33 is actuated, and further the rocking cylinder 3 is actuated to move the shaped steel beam W to a predetermined position in an upright state to stand. Of course, the sequence of each operation can be freely changed according to the situation of the work site.

By the way, the shaped steel beam W has a grip pad 15,
Since it is lifted only by the frictional force of 16, if the model steel beam W is gripped with the gripping arm 11 facing downward, the model steel beam W may slide downward, which may hinder the work. However, as described above, when the weight of the shaped steel beam W acts downward, the gripping pads 15 and 16 try to move toward the side of the guide bar 12 where the spacing between the guide bars 12 is narrow. Since the force is strengthened, the shaped steel beam W can be reliably gripped and arranged with high efficiency.

Next, another embodiment according to the present invention will be described with reference to the same parts and those having the same functions as the above-mentioned embodiments with the same reference numerals with reference to FIG. 6 which is a side view of a steel beam handling vehicle. As is well understood from the figure, this is different only in the structure of the main body of the traveling vehicle, and the model steel beam gripping device according to the above-mentioned embodiment has a traveling arm having a boom and an arm. In contrast to being mounted on a vehicle, in the present embodiment, the model steel beam gripping device 1 is mounted on the tip of a multi-step telescopic boom 32 that is undulating and expandable. Therefore, the multi-stage telescopic boom 32 is turned by the turning of the turning frame 31, and the multi-stage telescopic boom 32 is rotated.
Since the position of the shaped steel beam gripping device 1 can be freely moved by the ups and downs of the shaped steel beam gripping device 1 and the gripping arm support frame 8 of the shaped steel beam gripping device 1 can be swung and rotated, the effect of this embodiment is obtained. The effect is the same as in the above embodiment.

In the above description, the case where the model steel beam gripping device 1 grips the model steel beam W made of H-shaped steel has been described as an example. However, as is well understood from the above description, for example, an angle or a channel shape is used. Even a shaped steel beam made of a shaped steel having a cross section can be freely gripped.

[0021]

As described above in detail, according to the shaped steel beam gripping device of the present invention, like the conventional shaped steel beam gripping device,
Without having to replace the model steel beam gripping device according to the model steel beam with different dimensions, the model steel beam gripping device was easily gripped and the model steel beam gripping device was positioned inside the tunnel without fear of misalignment. Since the shaped steel beam can be arranged vertically and horizontally without interfering with the wall of the shaped steel beam gripping device in this state, there is a great effect on the efficiency improvement of the arrangement work of the shaped steel beam.

[Brief description of drawings]

FIG. 1 is a side view of a model steel beam handling vehicle equipped with a model steel beam gripping device according to an embodiment of the present invention.

2a is a side view of a model steel beam gripping device according to an embodiment of the present invention, and FIG. 2b is a view taken in the direction of arrow A in FIG. 2a.

3A and 3B are explanatory views of a supporting state of a gripping pad of a model steel beam gripping device according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram of vertically arranging the shaped steel beams by the shaped steel beam handling vehicle equipped with the shaped steel beam gripping device according to the embodiment of the present invention.

FIG. 5 is an explanatory view of standing up a model steel beam by a model steel beam handling vehicle equipped with a model steel beam gripping device according to an embodiment of the present invention.

FIG. 6 is a side view of a model steel beam handling vehicle according to another embodiment of the present invention.

FIG. 7 is a side view of a model steel beam handling vehicle according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shape steel beam gripping device, 2 ... Oscillating frame, 3 ... Oscillating cylinder, 4 ... Rotation drive device, 5 ... Slewing bearing, 6 ... Internal ring gear, 7 ... Hydraulic motor, 8 ... Gripping arm support frame, 9 ... Swivel joint, 10 ... gripping arm support pin, 11 ... gripping arm, 11a ... long gripping arm, 11b ... short gripping arm, 12 ... guide bar, 13
... Opening / closing cylinder, 14 ... Sliding frame, 15 ... Gripping pad,
16 ... Gripping pad, 17 ... Coil spring, 30 ... Traveling carriage, 31 ... Revolving frame, 32 ... Boom or multi-stage telescopic boom, 33 ... Arm, 34 ... Horizontal axis, W ... Shaped steel beam.

Claims (1)

[Claims] 1. A swing frame is swingably supported by a horizontal shaft provided at the tip of an undulating work arm of a traveling vehicle,
The swing frame is supported so as to be rotatable about an axis orthogonal to the horizontal axis and swingable about an axis orthogonal to the axis of rotation, and a gripping arm for gripping the steel beam is supported on the opposite side. In a model steel beam gripping device having a gripping arm support frame provided, the gripping arm is composed of a long gripping arm and a short gripping arm, and when the gripping arms are closed, a force is applied from the base end side thereof toward the distal direction. Through the steel beam misalignment prevention mechanism that strengthens the contact force when
A model steel beam gripping device, wherein gripping pads for sandwiching a plate portion of the model steel beam are mounted on opposite sides of a gripping arm.