JPH083513Y2 - Grasping device for traveling platform - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a gripping device for a traveling mount for fixing a traveling mount equipped with an excavator for excavating the inside of a caisson body to a traveling rail.

(Prior Art) As shown in Japanese Examined Patent Publication No. 60-22132, a pair of upper and lower annular rails are provided on the inner wall of the caisson body, and a traveling platform is made movable along the pair of upper and lower annular rails, and is provided on the movable body. There is a known excavator for excavating the ground inside the caisson body by means of an excavator.

In such an excavator, the traveling base can be smoothly moved along the pair of upper and lower annular rails by the excavation reaction force of the excavator without rattling, and at the same time, during excavation work, the excavation reaction force is transmitted to the traveling rail via the traveling base. Need to support.

For this reason, conventionally, a gripping device is provided on the traveling platform, and the gripping device grips the traveling rail to receive the excavation reaction force.

(Problems to be solved by the invention) However, since the conventional gripping device is apt to slip in the direction of the excavation reaction force, a larger pressing force is required, and as a result, a gripping cylinder having a large capacity is used, and thus the entire device is large. There was a problem.

The present invention has been made for the purpose of remedying the above-mentioned problems, and an object thereof is to provide a gripping device for a traveling pedestal that does not slip on the reaction force of excavation.

(Means and Actions for Solving the Problems) In order to achieve the above-mentioned object, the present invention attaches a traveling platform to a traveling rail laid along the inner peripheral surface of a caisson frame, and the caisson is mounted on the traveling platform. In the case where an excavator for excavating the inside of the body is attached, upper and lower clamps are provided on the above-mentioned traveling base so that the clamp arms are located above and below the traveling rail, and each clamp arm is rotated between the clamp arms. A gripping cylinder for moving is provided, and a gripping pad that is crimped onto the upper surface of the traveling rail and a gripping pad that is fitted into a guide groove formed on the lower surface of the traveling rail are provided at the tips of the clamp arms.

As a result, the traveling platform can be firmly fixed to the traveling rail, so that the traveling platform does not slip in the excavation reaction force direction due to the excavation reaction force.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of the traveling base, and FIG. 2 is a front view of the grip cylinder portion.

In these figures, reference numeral 1 denotes a traveling base, which is movably attached to an upper rail 3 ₁ and a lower rail 3 ₂ of a traveling rail 3 laid along the inner peripheral surface of a caisson frame 2.

An excavator 4 for excavating the inside of the caisson frame 2 is mounted on the traveling pedestal 1, and gripping devices 5 for supporting the digging reaction force are installed on both sides of the traveling pedestal 1.

The gripping device 5 is composed of an upper clamp 6 provided on the upper portion of the traveling platform 1 and a lower clamp 7 provided on the lower portion.

Both the upper clamp 6 and the lower clamp 7 have clamp arms 6a, 6b and clamp arms 7a, 7b which are vertically separated from each other, and the middle part of each clamp arm 6a, 7a is pivotally attached to the upper and lower parts of the traveling base 1. ing.

And these clamp arms 6a, gripping cylinder 8 between one end of 7a is provided, by extending the gripping cylinder 8, upper side of the upper rail gripping pad 6c provided on the clamp arm 6a tip 3 ₁ and simultaneously crimping the upper surface, fitting the gripping pads 7c forming a generally trapezoidal provided at a distal end of the lower clamp arm 7a, the guide groove 3a having the same cross-sectional shape formed on the lower surface of the lower rail 3 ₂ You can do it.

Further the clamp arm 6a, 7a and the upper rails 3 ₁ and the lower rail 3 ₂ interposed therebetween opposed manner provided clamp arm 6b, 7b together with the one end is pivotally secured to the traveling gantry 1, between the other end A gripping cylinder 9 is provided in the.

And by extending the gripping cylinder 9, and at the same time fitting the gripping pad 6d provided on the upper side of the clamp arm 6b tip to the upper rail 3 ₁ of the guide grooves formed in 3a on the lower surface, the lower side of the clamp arm 7b a gripping pad 7d provided at the distal end is adapted to be crimped to the upper surface of the lower rail 3 _2.

Next, the operation will be described. When excavating the inside of the caisson frame 2, first, the traveling mount 1 is driven by a traveling motor (not shown).
When the traveling gantry 1 reaches the excavation position, it is stopped at that position, hydraulic pressure is supplied to the respective gripping cylinders 8 and 9 of the gripping device 5, and these gripping cylinders 8 and 9 are extended.

As a result, the clamp arms 6a, 6b, 7a, 7b are rotated, and the gripping pads 6c, 7d provided at the tips of the clamp arms 6a, 6b are pressed onto the upper surfaces of the upper rail 3 ₁ and the lower rail 3 ₂ , The gripping pads 6d, 7c formed in the tips of the clamp arms 6b, 7a and having a substantially trapezoidal shape are fitted from below into the guide groove 3a having the same cross-sectional shape, and the upper part between the gripping pads 6c, 6d and 7c, 7d. Grasp the rail 3 ₁ and the lower rail 3 ₂ from above and below.

In this state, the excavator 4 mounted on the traveling pedestal 1 excavates the caisson frame 2, and the reaction force during excavation is transmitted from the traveling pedestal 1 to the gripping device 5, but the upper rail 31 and the lower rail 3 ₁ gripping pads crimped on the upper surface of the rail 3 ₂
Since the upper rail 3 ₁ and the lower rail 3 ₂ are firmly gripped between the 6c and 7d and the gripping pads 6d and 7c fitted in the guide groove 3a, the excavation does not slip in the excavation reaction force direction and the excavation does not occur. It becomes possible to reliably support the reaction force direction.

When the excavation within the reach of the excavator 4 is completed, the gripping device 5 may be opened to move the traveling platform 1 to the next excavation position, and the above operation may be repeated.

(Effect of the Invention) As described in detail above, the present invention has a gripping pad that is crimped on the upper surface of the traveling rail and a gripping pad that is fitted into a guide groove formed on the lower surface of the traveling rail to move the traveling rail in the vertical direction. Since the traveling gantry is fixed to the traveling rail by gripping it, the traveling pedestal does not slip in the direction of the digging reaction force even if a large excavation reaction force acts on the traveling gantry during excavation.

Since this enables heavy excavation, the caisson body can be efficiently excavated, and when the traveling platform is fixed to the traveling rail by the gripping device, the traveling rollers provided on the traveling platform can be separated from the traveling rollers. Since the excavation reaction force is not transmitted to the traveling roller, it is possible to prevent the bearing portion of the traveling roller from being damaged by an excessive excavation reaction force.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view of a traveling base, and FIG. 2 is a front view of a gripping cylinder portion. 1 …… Traffic mount, 2 …… Caisson frame, 3 …… Traffic rail, 3
a …… Guide groove, 4 …… Excavator, 6 …… Upper clamp, 6a, 6b
...... Clamp arm, 6c, 6d …… Grip pad, 7 …… Lower clamp, 7a, 7b …… Clamp arm, 7c, 7d …… Grip pad, 8,9 …… Grip cylinder.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Creator Tomoaki Miyazaki 3-1-1, Ueno, Hirakata-shi, Osaka Komatsu Seiki Co., Ltd. (72) Tsuyoshi Kitamura 3-1-1, Ueno, Hirakata-shi, Osaka Komatsu Seiki Stock Company Engineering Department

Claims (1)

[Scope of utility model registration request] 1. An excavator 4 for excavating the inside of the caisson frame 2 is mounted on a traveling rail 3 laid along the inner peripheral surface of a caisson frame 2 so as to be freely movable. In the above, the upper clamp 6 and the lower clamp 7 are provided so that the clamp arms 6a, 6b, 7a, 7b are located above and below the traveling rail 3 on the traveling base 1, and the respective clamp arms 6a, 6b, 7a, 7b are Between each clamp arm 6a, 6
Provided with gripping cylinders 8 and 9 for rotating b, 7a and 7b,
Gripping pads 6c, 7d that are crimped to the upper surface of the traveling rail 3 at the tips of the clamp arms 6a, 6b, 7a, 7b, and gripping pads 6d that are fitted in the guide grooves 3a formed on the lower surface of the traveling rail 3, A gripping device for a traveling platform provided with 7c.