JP2650471B2 - Sludge hose winding guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION << Industrial application field >> The present invention relates to a winding guide device for a sludge hose used in a hydrophrase excavator.

<< Conventional Technology >> A drainage hose for discharging drilling debris is connected to a hydrophrase excavator for ground excavation.
It is necessary to adjust the length of the hydrophrase excavator in conjunction with the lowering and raising operations.

Therefore, conventionally, a winding device has been installed adjacent to a groove to be excavated by a hydrophrase excavator, and a sludge hose has been wound or wound on a winding drum of the winding device.

Examples of this type of winding device include, for example, Japanese Utility Model Publication No. 61-4172.
There is an apparatus disclosed in Japanese Patent Publication No. 8 (Japanese Unexamined Patent Publication).

This device is for a shield excavator, which is roughly composed of a winding drum having a hollow rotary shaft to which the end of a hose is connected and one end of which is connected to the outside, and a drive mechanism for rotating the winding drum. However, it can also be used for hydrophrase excavators.

However, when the apparatus disclosed in this publication is applied to a hydrophrase excavator, there are the following technical problems.

<< Problems to be Solved by the Invention >> That is, in the apparatus disclosed in the above-mentioned publication, the drive mechanism of the winding drum is configured by a roller that comes into contact with the outer periphery of the winding drum. In a shield machine where the part to which the drainage hose is connected extends almost horizontally, there is not much problem because the winding resistance is relatively small, but hydrophrase drilling where the drainage hose is bent almost at a right angle in the part of the drilling groove In the machine, the winding resistance is increased, and the rotation of the winding drum is not performed smoothly only by the frictional force between the winding drum and the rollers.

Further, in the case of a hydrophrase excavator, since a drainage hose is inserted vertically into the excavation groove and is connected to the winding drum side arranged adjacent to the excavation groove at the ground surface, Since it is wound and fed out in a state of being wound at right angles, the load of the hose is directly applied to the drum, so that a large amount of labor is required to wind the hose around the drum in an aligned state.

The present invention solves the above-mentioned problems, and at the time of winding, while ensuring smooth winding of a sludge hose used for a hydrophrase excavator, aligning the winding drum without correcting the position of the hose. An object of the present invention is to provide a winding guide device for a sludge hose that can be wound into a state.

<< Means for Solving the Problems >> In order to achieve the above object, the present invention relates to a hydraulic drum excavator, which is disposed adjacent to a winding drum for winding and unwinding a sludge hose, and the hose is wound with the winding drum. In a guide device for guiding toward a take-up drum, a guide drum having a width corresponding to the outer diameter of the hose, and a guide drum rotatably supported and arranged movably in a traverse direction of the take-up drum. And a drive mechanism for reciprocating the table.

<Operation> According to the above configuration, the hose is bent horizontally by the guide drum and supplied to the winding drum side, and the guide drum is moved and adjusted in the traverse direction to adjust the width of the winding drum in the width direction. The hose supply position can be adjusted.

Also, since the sludge hose is extended substantially horizontally from the winding drum and connected to the excavator side in a state of being bent along the curve by the guide drum, the winding resistance of the sludge hose is extremely small. Become.

<< Embodiment >> Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 3 show a winding guide device for a sludge hose according to the present invention.

The winding guide device in the figure is arranged adjacent to a winding and unwinding device of a drainage hose H used in a hydrophrase excavator, and the winding and unwinding device is adjacent to the excavation groove A at the ground surface. A base 1 installed on the base 1, a frame 2 on one side on the base 1, which is framed in a rectangular shape, and is rotatably provided inside the frame 2, and is suspended in the excavation groove A. Connected to the established drainage hose H,
There is provided a winding drum 3 for winding and feeding the same.

On the other hand, the guide device 4 is arranged on the other side of the base 1 and near the excavation groove A, and guides the hose H horizontally to the winding drum 3 side.

The winding drum 3 includes a hollow drum rotation shaft 5 and a ring-shaped flange 6 fixed to both sides of the drum rotation shaft 5.

The outer diameter of the drum rotation shaft 5 is set to the minimum diameter without bending according to the minimum bending dimension of the hose H, and a hose connection joint 7 is projected obliquely on the outer periphery thereof, The end of the hose H is connected to the joint 7.

The rotation center of the drum rotation shaft 5 is the frame 2
The arm 8 is rotatably supported via a bearing 9 at a free end of an arm 8 rotatably arranged on both sides of one side.

Note that one of the bearings 9 forms a swivel joint,
The hose H is connected to the external sludge pipe 10 via the drum rotation shaft 5 by connecting the sludge pipe 10 to this portion.

Further, both lower sides of the flange 6 are in contact with and supported by a plurality of guide rollers 11 swingably provided on the base 1.

A motor 12 for driving the drum is disposed inside the frame 2, and a sprocket 13 provided on an output shaft of the motor 12 is provided.
And a chain 15 is suspended between a sprocket 14 provided coaxially with the rotation center of the drum rotation shaft 5, and the winding drum 3 is rotated forward and backward by a forward / reverse rotation drive of the drive motor 12 by a switching operation of a manual switch (not shown). The hose H rotates in the opposite direction, and winds and unwinds the hose H around the drum rotation shaft 5.

The chain 15 is provided with a tension detecting device.

This tension detecting device is suspended on the upper side of the frame 2 so as to be swingable and meshes with an intermediate position of the chain 15 and a sprocket 16 for detecting tension, and one end of the sprocket
A load meter 17 which is connected to the lower end of the frame 2 at the other end and constantly presses the sprocket 16 against the chain 15 with a predetermined urging force to give the chain 15 a predetermined amount of bending. And a limit switch 18 provided in total 17.

When the chain 15 is stretched, that is, the load applied to the winding drum 3 exceeds a predetermined value, and when a large load acts on the chain 15, the sprocket 16 rises and the limit switch 18 is turned on, and when the load is reduced, The limit switch 18 turns off.

Although not shown in the drive circuit for the drive motor 12, the ON operation of the limit switch 18 causes the motor 12 to rotate in the normal rotation (in this case, stop all) or stop. Even if there is, a circuit for reversing the motor 12 for a predetermined time is incorporated, whereby the winding drum 3 reverses for a predetermined time and draws out the hose H from the winding state by a predetermined length to remove an excessive load.

That is, if the hydrophrase excavator descends while the motor 12 is stopped, excessive tension is applied to the hose H, and conversely, the lifting operation of the hydrophrase excavator is performed with the motor 12 rotating forward. When the hose H is wound at a higher winding speed, excessive tension is applied to the hose H. In either case, when the excessive tension is applied, the motor 12 rotates in the reverse direction regardless of the state. As a result, the tension is returned to a constant value to prevent an excessive load from being applied to the hose H.

The guide device 4 is located on the other side of the base 1, and is provided with a movable table 20 movably arranged in the traverse direction of the winding drum 3, and a pair of bearings erected on the movable table 20. A frame 21 and a guide drum 22 rotatably supported by the bearing frame 21 and rotating in parallel with the rotation direction of the winding drum 3 are provided.

At the lower part of the moving table 20, two pairs of wheels 24 rolling on guide rails 23 fixedly arranged in the traverse direction on the base 1 are provided. Roller 25 is provided rotatably, and guide drum
It contacts the side of the hose H led to 22.

The upper end 21a of the bearing frame 21 is expanded upward to guide the hose H into the guide drum 22.

Further, the outer circumference of the guide drum 22 has a diameter adapted to the minimum radius of the bend of the hose H, and a drum main body 22a set to a width dimension equivalent to the outer diameter of the hose H;
Drop-off prevention ring 2 provided integrally on both sides of the drum body 22a
2b.

Further, a moving mechanism for the moving table 20 is provided below the moving table 20.

The moving mechanism includes a drive motor 26 fixed on the base 1 and rotating forward and backward, and a sprocket 28, 2
Rotational power is transmitted through the chain 9 and the chain 30, and the screw rod 31 is disposed parallel to the guide rail 23 and both ends are supported by the base 1 side. And a female screw portion 32 which is screwed to the screw rod 31 and moves in the screw feed direction.

Accordingly, the guide drum 22 is moved by the movement of the hose H while being moved in the width direction of the winding drum 3 by the forward and reverse rotation drive of the drive motor 26, and the hose H is conveyed to the outer periphery of the winding drum 3; Thereby, the hose H can be wound in the width direction of the outer circumference of the winding drum 3 in an aligned state.

In this traverse drive, the diameter of the hose H is large,
In addition, since the winding and unwinding operations are relatively slow, the traverse direction may be visually determined by an operator, and movement may be performed by operating a manual switch. The traverse may be performed automatically in conjunction with the traverse.

In addition, the winding and feeding device of the sludge hose to which the present invention is applied is not limited to the above-described embodiment,
For example, a conventional winding / unwinding device may be used.

<< Effect of the Invention >> As described in detail in the above embodiments, in the winding guide device for a mud discharging hose according to the present invention, the hose supplied to the winding drum is controlled by the guide drum in accordance with the curvature thereof. Since it is bent and connected to the excavator side, the winding resistance is reduced, and the supply position of the hose in the width direction of the winding drum can be adjusted by moving the guide drum in the traverse direction. By winding on the outer periphery of the, winding in an aligned state can be performed.

[Brief description of the drawings]

FIG. 1 is a front view showing a take-up guide device for a sludge drain hose according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side view. 3 ... winding drum 4 ... guide device 12 ... drive motor 20 ... moving table 21 ... bearing frame 22 ... guide drum 26 ... drive motor 28,29 ... sprocket 30 ... chain 31 ... screw Rod 32: Female thread H: Hose

Claims (1)

(57) [Claims] 1. A guide device disposed adjacent to a winding drum for winding and unwinding a sludge hose used in a hydrophrase excavator and guiding the hose toward the winding drum. A guide drum having a width corresponding to a diameter, a table rotatably supporting the guide drum, and a table arranged to be movable in the traverse direction of the winding drum; and a drive mechanism for reciprocating the table. A winding guide device for a sludge hose.