JPH07903B2 - Press-fitting device for long members - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for press-fitting a long member such as a pipe or a rod member into the ground, and in particular, while rotating the long member around its axis. It relates to a device that is press-fitted into the ground.

(Prior Art) As one of press-fitting devices for arranging a long member in the ground, by applying pressure in the axial direction of the long member to the head of the long member, the long member is grounded. There is a press-fitting device.
According to this press-fitting device, since the head of the long member is not impacted, there is a problem of a hitting machine that impacts the head of the long member, that is, the head of the long member is damaged and at the time of work. The problem of producing loud noise is solved.

As one of the other press-fitting devices, a chuck that holds a long member such as a pile is attached to a side portion of an elevating body that is vertically moved by vertical driving means such as a cylinder mechanism, and the long member is held by the chuck. In this state, there is a device for rotating the chuck around the axis of the elongated member by a rotation driving means such as a hydraulic motor and moving the chuck in the axial direction of the elongated member by a vertical driving means (Japanese Patent Laid-Open No. 59-15126). Gazette). This press-fitting device also solves the above-mentioned problem of the hitting machine.

(Problem to be Solved by the Invention) However, in the former press-fitting device, since only the pressure in the axial direction of this is applied to the long member, it is easy to press-fit the long member into the soft ground. However, it is difficult to press-fit the long member into the hard ground. Further, in the conventional press-fitting device, since the stroke of the member for applying pressure is long, the length dimension of the device in the direction of press-fitting the long member becomes large.

In the latter press-fitting device, since the chuck and the lifting body are displaced in the direction orthogonal to the moving direction of the long member, the structure of the press-fitting device is complicated and large.

The present invention provides a press-fitting device having a simple structure, which can easily press-fit a long member into hard ground and can reduce the length dimension in the direction of press-fitting the long member. With the goal.

(Means for Solving the Problems) A press-fitting device for a long member according to the present invention is a cylinder mechanism including a cylinder tube and a cylindrical piston rod movably supported by the cylinder tube, and an axis line of the cylinder tube. A cylinder mechanism that expands and contracts in the direction, and allows a long member that is a rotary shaft that is moved in the expandable direction by the cylinder mechanism and that is moved in the expandable direction and that should be press-fitted penetrates the rotary shaft in the axial direction thereof. A cylindrical rotary shaft, a drive mechanism supported by the cylinder mechanism to rotate the rotary shaft around its axis, and a chuck for releasably gripping the elongated member, the front end of the rotary shaft. A chuck mounted to the part, the rotary shaft being rotatably received on the piston rod about its axis.

The cylinder mechanism may further include a guide member fixed to the outside of the cylinder tube, and a guide rod extending through the guide member slidably in the expansion and contraction direction and fixed to the piston rod. preferable.

Further, a connecting mechanism for connecting the cylinder tube to a supporting device for the press-fitting device is included, and the connecting mechanism includes a first frame attached to the supporting device and a second frame attached to the outside of the cylinder tube. A second frame which is a frame and is displaceably abutted on the first frame in a plane parallel to the axis of the cylinder tube so as to be displaceable around an axis orthogonal to the plane; and the first and second frames. It is preferable to provide a connecting member for connecting so as to be separable.

One of the first and second frames has a hole in the surface concentric with an axis orthogonal to the surface, and the first and second frames
Preferably, the other of the frames has a shank in the face rotatably received in the hole.

Each of the first and second frames has a plurality of holes formed on the same virtual circle around the hole and the axis, and the connecting member is provided on the first frame. It preferably comprises a pin that is inserted into any one hole formed and any one hole formed in the second frame.

(Advantageous Effects of the Invention) The rotating shaft is rotated around the axis of the rotating shaft by the drive mechanism, and is reciprocated in the direction of the axis by the cylinder mechanism. The elongate member is arranged so as to extend through the rotary shaft in the axial direction thereof. The chuck grips the elongate member when the cylinder mechanism is extended and releases the elongate member when contracted.

According to the present invention, since the long member is pushed into the ground while being rotated when the cylinder mechanism is extended, the long member can be easily press-fitted even on hard ground. Also,
Since the chuck is reciprocated, the stroke of reciprocation can be shortened, and as a result, the length dimension of the device in the press-fitting direction can be reduced. Furthermore, since the cylinder mechanism for reciprocating movement is arranged around the rotation axis,
The structure of the device is simplified.

According to the press-fitting device of the second aspect, since the rotation of the piston rod with respect to the cylinder tube is blocked by the guide member and the guide rod, wear of the cylinder tube and the piston rod is small. Further, since the drive mechanism can be supported on the piston rod and the drive mechanism can reciprocate together with the piston rod, the length dimension in the press-fitting direction can be further reduced.

According to the press-fitting device of claim (3), the connection state of the first and second frames can be changed by the connecting mechanism around the axis orthogonal to the plane parallel to the axis of the cylinder tube. The direction of reciprocal movement of the rotary shaft with respect to the vertical line can be changed, and as a result, the elongated member can be press-fitted in any direction with respect to the horizontal line and the vertical line.

According to the press-fitting device of the fourth aspect, the press-fitting direction of the long member can be changed by changing the relative positions of the first and second frames around the axis.

According to the press-fitting device of the fifth aspect, the structure of the connecting mechanism is simplified.

(Example) Hereinafter, the Example of this invention shown in drawing is described.

The present invention can be applied not only to a device for press-fitting a long member used as a base such as a pile, but also to a press-fit device for a long object for other purposes such as a branch pipe of sewer. .

The press-fitting device 10 shown in FIGS. 1 to 3 includes a press-fitting cylinder mechanism 12. The cylinder mechanism 12 has a cylinder tube 14
And a cylindrical piston rod 16 coaxially supported by the cylinder tube. The cylinder chamber defined by the cylinder tube 14 and the piston rod 16 is a first chamber formed by the piston portion provided on the outer circumference of the piston rod 16.
It is divided into 18a and a second chamber 18b.

The cylinder tube 14 has two ports for hydraulic oil that move the piston rod 16 relative to the cylinder tube 14.
20,22 are formed. The port 20 is in communication with the first chamber 18a and the port 22 is in communication with the second chamber 18b.

The piston rod 16 extends through the cylinder tube 14 in the axial direction thereof, and
It is supported so as to be movable in the axial direction thereof. An end plate 24 is fixed to the front end portion of the piston rod 16 so as to close the hollow portion of the piston rod 16.

As shown in FIGS. 2 and 3, the end plate 24 has an extension 26 extending radially outward of the piston rod 16. A guide rod 28 is fixed to the tip of the extension portion 26 by a nut 30. Guide rod 28 is a cylinder tube
14 extends backwards on the outside of the cylinder tube
A guide member 32 fixed to 14 is slidably penetrated. Therefore, the piston rod 16 operates in cooperation with the guide rod 28 and the guide member 32 so that the cylinder tube 14
Is allowed to move in the axial direction, but cylinder tube 14
Rotation about the axis of is blocked.

As shown in FIG. 3, the piston rod 16 has a hollow rotary shaft 34 extending in the piston rod along the axis thereof.
Are rotatably supported by a plurality of bearings 36. A gear 38 is fixed to the outer periphery of the rear end of the rotary shaft 34. The gear 38 meshes with a plurality of gears 40, and each gear 40 is fixed to the output shaft of a drive mechanism 42 housed inside the rear end of the piston rod 16.

Each drive mechanism 42 includes a rotation source such as a hydraulic motor, and is fixed to an annular support plate 44 that is fixed to the piston rod 16 coaxially with the rotation shaft 34. The rotation source is actuated when the elongated member 46 is press-fitted, so that the rotating shaft 34 is rotated. The rotation direction of the rotary shaft 34 may be only one direction or may be switched at predetermined time intervals.

A cover 48 that protects each drive mechanism 42 is fixed to the piston rod 16. The cover 48 includes a tubular portion coaxial with the hollow portion of the rotating shaft 34, and a flange portion integrally provided at the rear end of the tubular portion.

The front end of the rotary shaft 34 extends through the end plate 24. A chuck 50 for releasably gripping the elongated member 46 is fixed to the front end of the rotary shaft 34. In the illustrated example, the chuck 50 is a hydraulic chuck that uses three chuck cylinder mechanisms 52. However, other chucks such as a chuck using an air cylinder mechanism and a chuck using a solenoid mechanism may be used.

As shown in FIG. 4, a swivel joint 5 having two ports 54 and 56 for hydraulic oil is provided on the outer periphery of the tip end portion of the rotary shaft 34.
8 are arranged. The swivel joint 58 is fixed to the end plate 24 by a plurality of bolts. The port 54 is connected to one cylinder chamber of each cylinder mechanism 52 via a flow path provided in the rotary shaft 34 and the chuck 50. The port 56 is connected to the other cylinder chamber of each cylinder mechanism 52 via another flow path provided in the rotary shaft 34 and the chuck 50.

The press-fitting device 10 further includes a cylinder tube 14, a carriage,
It includes a connecting mechanism 62 for connecting to a supporting device 60 such as a support base or a tower. The connection mechanism 62 is a first device attached to the support device 60.
Frame 64 and a second frame 66 attached to the outer peripheral surface of the cylinder tube 14. First and second
The frames 64, 66 are in contact with each other on a plane parallel to the axis of the cylinder tube 14.

As shown in FIG. 6, the first frame 64 is provided with a circular hole 68 in the center of the surface that abuts the second frame 66,
The second frame 66 includes a shank 70 that is rotatably received in the hole 68. The shaft portion 70 projects from the central portion of the surface that is in contact with the first frame 64. The first frame 64 is
At the rim portion thereof, it is attached to the attachment portion 72 of the support device 60 by a plurality of bolts.

The coupling mechanism 62 also includes first and second frames 64,66.
A plurality of pins 74 that releasably connect to each other. For this reason,
As shown in FIG. 5, the first and second frames 64, 66.
Each of which has a plurality of holes 76, 78 for receiving pins 74. The holes 76 are formed in the same circle on the first frame 64 around the holes 68. On the other hand, the hole 78 is formed in the second frame 66 at a symmetrical portion on the same circle as the circle.

At the time of press fitting, the long member 46, as shown in FIG.
50, the rotating shaft 34, and the cover 48 are arranged so as to penetrate therethrough. Next, the hydraulic oil is supplied to the port 20 while the chuck 50 and the drive mechanism 42 are being operated. As a result, the piston rod 16 is moved forward with respect to the cylinder tube 14 and the press-fitting cylinder mechanism 12 is extended while the long member 46 is held by the chuck 50 and the rotary shaft 34 is rotated. The scale member 46 is rotated to the left in FIGS. 1 and 3 while being rotated about its axis,
It is pressed into the ground on the left in FIGS. 1 and 3.

When the press-fitting cylinder mechanism 12 is fully extended, the drive mechanism
The operations of 42 and the chuck 50 are stopped, and hydraulic oil is supplied to the ports 22 and 54. As a result, the long member 46 is released from the chuck and the press-fitting cylinder mechanism 12 contracts, so that the rotary shaft 34 and the chuck 50 are returned to their original states.

The above process is repeated until the press-fitting of the long member 46 is completed. By using a first sensor that detects that the press-fitting cylinder mechanism 12 is completely extended and a second sensor that detects that the press-fitting cylinder mechanism 12 is contracted, the above process is automatically repeated. Can be made.

The press-fitting device 10 has a horizontal direction in the left and right directions in FIG.
It can be used either in the vertical direction. Further, by changing the hole 76 into which the pin 74 is inserted, the direction of expansion and contraction of the press-fitting cylinder mechanism with respect to the support device 60 can be changed, and as a result, the long member with respect to the maintenance device 60.
The press-fitting direction of 46 can be set to any direction.

[Brief description of drawings]

1 is a front view showing an embodiment of the press-fitting device of the present invention, FIG. 2 is a left side view of the press-fitting device of FIG. 1, and FIG. 3 is taken along line 3-3 of FIG. A sectional view, FIG. 4 is an enlarged sectional view showing an end portion of a rotating shaft and a chuck, FIG. 5 is a plan view showing an embodiment of a connecting mechanism, and FIG. 6 is a line 6-6 in FIG. It is sectional drawing obtained along. 10: press-fitting device, 12: cylinder mechanism, 14: cylinder tube, 16: piston rod, 28: guide rod, 32: guide member, 34: rotating shaft, 42: drive mechanism, 46: long member, 50: chuck, 60: support device, 62: coupling mechanism, 64: first frame, 66: second frame, 68: hole, 70: shaft part, 74: pin, 7
6,78: Hole.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kinji Imai 107 Yanagimori-cho, Nakagawa-ku, Nagoya, Aichi Prefecture Taiyo Kikai Kogyo Kogyo Co., Ltd. (56) Reference JP-A-59-15126 (JP, A)

Claims (5)

[Claims] 1. A cylinder mechanism comprising a cylinder tube and a cylindrical piston rod movably supported by the cylinder tube, wherein the cylinder mechanism expands and contracts in the axial direction of the cylinder tube, and extends in the expansion and contraction direction. A cylindrical rotation shaft that is a rotation shaft that is moved in the expansion and contraction direction by a cylinder mechanism and that allows a long member to be press-fitted to penetrate the rotation shaft in the axial direction thereof, and the rotation shaft A rotation mechanism including a drive mechanism supported by the cylinder mechanism to rotate around, and a chuck releasably gripping the elongated member, the chuck being attached to a front end of the rotation shaft. A press-fitting device for the elongated member, which is rotatably received on the piston rod about its axis. 2. The cylinder mechanism further comprises a guide member fixed to the outside of the cylinder tube, a guide rod extending through the guide member slidably in the expansion and contraction direction and fixed to the piston rod. With and
The press-fitting device according to claim 1. 3. A connecting mechanism for connecting the cylinder tube to a supporting device for the press-fitting device, wherein the connecting mechanism is attached to a first frame attached to the supporting device and an outside of the cylinder tube. The second
A second frame that is displaceably abutted on the first frame in a plane parallel to the axis of the cylinder tube around the axis orthogonal to the plane, and the first and second frames. The press-fitting device according to claim 1 or 2, further comprising a connecting member that connects the frames in a separable manner. 4. One of the first and second frames has a hole in the surface concentric with an axis orthogonal to the surface, and the other of the first and second frames is rotatable in the hole. The press-fitting device according to claim (3), having a received shank on said surface. 5. Each of the first and second frames has a plurality of holes formed on the same virtual imaginary circle around the hole and the axis, and each of the connecting members has a plurality of holes. The press-fitting device according to claim (4), comprising a pin removably inserted into any one hole formed in the first frame and any one hole formed in the second frame. .