JP3456570B2 - Mandrel press-fitting device for paper drain machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper drain machine for embedding a paper drain in a soft ground and sucking the water in the ground to the ground by a capillary phenomenon caused by the paper drain. The present invention relates to a mandrel press-fitting device for press-fitting and withdrawing a pipe-shaped mandrel into the ground.

[0002]

2. Description of the Related Art As a conventional mandrel press-fitting device, there is one in which a mandrel is sandwiched between a pair of rollers and a roller is rotated by a motor to press-fit or pull out the mandrel into the ground. A conventional mandrel press-fitting device of this type, as disclosed in, for example, Japanese Utility Model Publication No. 6-29212, fixes one roller and a housing of a drive motor to a fixing frame of a paper drain machine with a plurality of bolts, The other roller is fixed to a movable frame that can approach and separate from one roller by a plurality of bolts, and the movable frame is pressed against the one roller side by a spring.

[0003]

As described above, in the conventional mandrel press-fitting device, since one roller is fixed to the frame, when the mandrel is bent and embedded in the fixed roller for some reason, the mandrel is inserted. However, there is a problem that the mandrel is easily bent when the mandrel is pulled out (the mandrel is bent and pulled up in a state where the mandrel is wound around the fixed roller in the fixed roller portion).

In view of the above problems, it is an object of the present invention to provide a mandrel press-fitting device having a structure capable of preventing the mandrel from bending when pulling out the mandrel in the mandrel press-fitting device in a paper drain machine. .

[0005]

A mandrel press-fitting device for a paper draining machine according to claim 1, wherein the mandrel press-fitting device mounted on a self-propelled vehicle presses the paper drain together with the mandrel into the ground. The mandrel press-fitting device has a structure in which the mandrel is sandwiched between rollers which form a pair and are opposed to each other.
Mounted on a mounting frame with a roller driving motor
Is, placed to be close and away from the mating rollers forming each pair mounting frame of the rollers, each mount
It has a spring that presses the contact frame toward the opposite roller.
The shock absorbing mechanism and the amount of protrusion on the member pressed by the spring.
It is mounted so that it can be adjusted and its tip touches the mounting frame.
The space adjustment mechanism between the rollers that have contacting members
It is characterized by having prepared for each la .

In this way, by making both the rollers on both sides forming a pair sandwiching the mandrel movable, even if a biased force is applied to either one of the rollers when pulling out the mandrel, the rollers are displaced in the direction of the force. However, the bending force applied to the mandrel is relaxed, and the bending of the mandrel can be prevented.

Further, by having a gap adjustment mechanism between the rollers, by contact with the roller at an optimum pressure mandrel pressed against the mandrel, it is possible to perform withdrawal.

Further, by providing each of the gap adjustment mechanism of the rollers in each roller, the mandrel can perform gap adjustment to keep vertically.

According to a second aspect of the present invention, there is provided a mandrel press-fitting device for a paper draining machine according to the first aspect, wherein two pairs of the pair of rollers are provided and arranged vertically.

By thus arranging the pair of rollers vertically, the surface pressure of each roller can be lowered and the life of the rollers can be extended.

[0011]

FIG. 1 is a side view showing an example of a paper drain machine equipped with a mandrel press-fitting device according to the present invention,
FIG. 2 is a side view of the mandrel press-fitting device. Figure 1,
In FIG. 2, 1 is a crawler type traveling body, 2 is a turning device 3
Revolving structure installed on the traveling structure 1 via the frame 4, a frame mounted on the revolving structure 2 so as to project forward, 5 a tower composed of a lattice boom installed on the frame 4, and 6 a frame 4 It is a mandrel press-fitting device attached.

In this paper draining machine, a mandrel 27 (see FIGS. 2 and 3) is inserted in a tower 5 so as to be vertically movable along a guide, and is mounted on a reel (not shown) attached to a side portion of the frame 4. Wound strip-shaped paper drain 26
(See FIG. 3) is inserted into the mandrel from the top of the tower 5, the tip of the paper drain is locked to the tip of the mandrel, and the mandrel is pressed into the soft ground by the mandrel press-fitting device 6 to simultaneously remove the paper drain. It is pressed into soft ground. When the mandrel is pushed until the top reaches the lower end of the tower 5, the worker cuts the paper drain part coming out of the top of the mandrel, and operates the mandrel press-fitting device 6 in the mandrel pulling direction to pull the mandrel. For example, the paper drain remains in the ground, and the hanging paper drain in the tower 5 is inserted into the mandrel. Then, when the mandrel is pulled up to the top and the lower end of the paper drain is exposed from the lower end of the mandrel, the lower end of the paper drain is locked in the locking groove at the lower end of the mandrel, and the mandrel press-fitting device 6 presses the mandrel into the ground again. By doing so, the work of burying the paper drain is repeated.

The mandrel press-fitting device 6 of this embodiment is provided with four rollers 8, two at the upper part and two at the lower part, and they are rotationally driven in the forward and reverse directions by a drive motor 9 which is a hydraulic motor with its own speed reducer. It is configured to do. Further, in this example, the rollers 8 and the like are unitized for easy attachment and detachment for maintenance and inspection including the drive motor 9 and the like. That is, it is composed of roller units 6a and 6b and lower roller units 6c and 6d. Each roller unit 6
Each of a to 6d includes a bracket 7, a roller 8 attached to each bracket 7, and a roller driving motor 9 independently provided corresponding to each roller 8. on the other hand,
The frame 4 includes a roller unit mounting frame 1
Pins 1 and 12 are detachably attached.

In each roller unit 6a to 6d, one bracket 13 is used to attach each bracket 7 to the frame 11 so that each roller 8 can approach and separate from the opposing roller 8 at the same height. Alternatively, the roller units 6a to 12 are rotatably and detachably mounted.
As shown in the bottom view of FIG. 3, the mounting frame 1 is rotated by the turning force centered on the pin 13 due to its own weight of 6d.
The bracket 7 is attached to the receiving portions 15 provided on the first and the second portions 12 to be attached.

Then, by adjusting the positions of the receiving portions 15 provided on the mounting frames 11 and 12 corresponding to the roller units 6a and 6d, the distance between the pair of rollers 8 is adjusted. In the present example, the receiving portion 15 has the roller units 6 attached to the mounting frames 11 and 12, respectively.
It is formed at the tip of a unit receiving device 16 that has both a roller gap adjusting mechanism and a cushioning mechanism that are mounted corresponding to a to 6d.

The unit receiving device 16 has a mounting frame 11 or 12 as shown in the partial sectional bottom view of FIG.
The cylindrical body 17 is fixed to the cylindrical body 17, and a grease cylinder 19 having a collar portion 18 is slidably accommodated in the cylindrical body 17. Grease cylinder 19 is made of and internally fitted slidably the rod 20 abutting on the bracket 7, when press-fitting the grease from the outside through the hole 22a of grease rod 22 into the bottom chamber 21, the rod 20 protrudes Tip
The spacing is adjusted by bringing the bracket 7 that abuts the receiving portion 15 close to the roller 8 side of the other side. The grease injection rod 22 is slidably inserted into the hole 23a of the bottom plate 23 of the cylindrical body 17.

A compression spring 2 constituting a buffer mechanism between the collar portion 18 of the grease cylinder 19 and the bottom plate 23 of the cylindrical body 17.
5 intervenes. A stopper 24 is screwed onto the rear end of the grease injection rod 22, and the stopper 24 is pressed against the bottom plate 23 of the cylindrical body 17 by the force of the compression spring 25.
The operation of the buffer mechanism will be described. The mandrel 2
When a force for pushing the roller 8 to the left in FIG. 4 acts on the roller 8 due to the bending of 7 or the like, the force is applied to the rod 20 via the bracket 7, and the rod 20 is integrated with the grease cylinder 19 and at the collar portion 18. By moving the compression spring 25 to the left while compressing it, it is possible to prevent an excessive force from being applied to the roller 8 and the mandrel 27, so that the roller 8 and the mandrel 27 can be prevented.
It is intended to prevent damage.

In this mandrel press-fitting device, as shown in FIGS. 2 and 3, a mandrel 27 having a paper drain 26 inserted between paired roller units 6a and 6b and 6c and 6d is passed through each roller unit 6a. ~ 6
The mandrel 27 is moved up and down by rotating the driving motor 9 of d in the forward and reverse directions.

In the present embodiment, the mandrel 27
Since both of the rollers 8 on both sides of the mandrel 27 are movable by pushing the bracket 7 by the compression spring 25, the mandrel 27 is bent and buried for some reason and is buried when the mandrel 27 is pulled out. Even if a biased force is applied to one of the rollers 8 forming the roller 8, the roller 8 is displaced against the force of the compression spring 25, the bending force applied to the mandrel 27 is relaxed, and the bending of the mandrel can be prevented. it can.

Further, by providing an inter-roller space adjusting mechanism consisting of the grease cylinder 19, when the space changes due to wear of the roller 8 or the like, grease is injected into the bottom chamber 21 of the grease cylinder 19. As a result, the space can be set to an optimum size, and the mandrel 27 can be sandwiched with an appropriate pressure.

Although a gap adjusting mechanism may be provided in the receiving portion 15 of one of the roller units 6a and 6b or one of 6c and 6d, as shown in this example, a pair of rollers is provided. It is easy to maintain the vertical posture of the mandrel 27 by providing the space adjustment mechanism between the rollers on both sides.

The pair of rollers may be one set,
By providing two pairs of upper and lower rollers as in the present example, the surface pressure of each roller 8 can be lowered and the life of the rollers can be extended, as compared with the case where only one pair of rollers is provided.

The mechanism for adjusting the distance between the rollers may be constructed by using an adjusting screw instead of the grease cylinder 19. Further, for adjusting the distance between the pair of rollers 8, both rollers may be attached to a slide type movable frame, and the buffer mechanism may be a buffer means using a fluid compression or flow. May be.

[0024]

According to the first aspect of the present invention, the mandrel press-fitting device has a structure in which the mandrel is sandwiched between a pair of rollers,
Since each roller is installed so as to be able to move toward and away from the other roller in the pair, and a buffer mechanism for pressing each roller toward the other roller is provided, one of the rollers is pulled out when the mandrel is pulled out. Even if a biased force is applied to the side, the roller is displaced in the direction of the force, the bending force applied to the mandrel is relieved, and bending of the mandrel can be prevented.

Further, since a spacing adjustment mechanism between the rollers of the pair, roller brought into contact at an optimal pressure against the mandrel by pressing the mandrel, it is possible to perform withdrawal.

Further, since the provided corresponding to the gap adjustment mechanism in the roller of the pair, it is possible to perform the interval adjustment in a state in which the mandrel is held vertically by the roller.

According to claim 2, in claim 1, since the pair of vertically spaced includes two sets of rollers constituting the pair, it is possible to lower the surface pressure of the rollers, to prolong the life of the roller be able to.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a paper drain machine equipped with a mandrel press-fitting device according to the present invention.

FIG. 2 is a side view of the mandrel press-fitting device of FIG.

FIG. 3 is a bottom view showing the mandrel press-fitting device of the present embodiment.

FIG. 4 is a cross-sectional view showing a cushioning and roller spacing adjusting mechanism provided in the mandrel press-fitting device of the present embodiment.

[Explanation of Codes] 1: Crawler type traveling body, 2: Revolving body, 3: Revolving device,
4: Frame, 5: Tower, 6: Mandrel press-fitting device,
6a to 6d: roller unit, 7: bracket, 8: roller, 9: roller driving motor, 10: pin, 11, 1
2: mounting frame, 13: pin, 15: receiving part, 16:
Unit receiving device, 17: cylindrical body, 18: collar part, 19:
Grease cylinder, 20: Rod, 21: Bottom chamber, 2
2: Grease injection rod, 23: Bottom plate, 24: Stopper, 25: Compression spring, 26: Paper drain, 27: Mandrel

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02D 3/10 103

Claims (2)

(57) [Claims] 1. A mandrel press-fitting device mounted on a self-propelled vehicle.
Allows the paper drain to be pressed into the ground with the mandrel.
In the paper drain machine that does The mandrel press-fitting device comprises a pair of opposing rollers.
It has a structure in which a mandrel is sandwiched betweenEach roller has its own roller drive motor
Attached to the bracket, The bracket has a roller attached to it Make a pair
It is possible to move away from and to the opposite rollerInstalled so that
Then Press each of the brackets toward the counterpart roller
A buffer mechanism having a spring and a portion pressed by the spring
It is attached to the material so that the protrusion amount can be adjusted and the tip is
A space adjusting mechanism between rollers having a member that abuts on
Was provided for each roller Paper dress characterized by
Machine mandrel press-fitting device. 2. The mandrel press-fitting device for a paper drain machine according to claim 1 , wherein two pairs of said rollers are provided and arranged vertically.