JP2742753B2 - Pipe lifting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work for laying a fume pipe or the like in the ground in a stable state while controlling the posture of the pipe to be laid, and slinging and removing the ball. The present invention also relates to a tube lifting device which can be smoothly performed.

[0002]

2. Description of the Related Art When laying a pipe such as a fume pipe, a pipe lifting apparatus is used to lift and transport a pipe from a pipe storage location to a pipe laying place. As such a tube lifting device, a horizontal rod is conventionally supported by a hoist so as to be able to move up and down freely, and a pair of slinging wire ropes is attached to the horizontal rod at a predetermined interval, and the pipe is connected by the wire rope. After slinging at two places, a device configured to lift a horizontal rod by the operation of a hoist and to convey it along a traversing rail to a laying place is widely used.

[0003]

However, when a single tube is moved to a position below a horizontal rod suspended by a hoist in a tube storage location, the length of the tube is usually changed in the longitudinal direction. Since the pipe is transferred at a right angle to the length of the horizontal rod, when slinging, the pipe must be temporarily turned in the length direction of the horizontal rod, which requires considerable labor and labor. was there.

Further, it is difficult to sling the tube so that the center of gravity of the tube is positioned on the center line of the lifting, and the transporting posture becomes unstable. The work cannot be smoothed out,
In addition, there has been a problem that it is not possible to efficiently perform slinging and unballing operations. SUMMARY OF THE INVENTION An object of the present invention is to provide a tube lifting device capable of completely solving such a problem.

[0005]

In order to achieve the above object, a pipe lifting apparatus according to the present invention has a hook suspended from a central lower surface of a rod-shaped main body in the longitudinal direction and is equidistant from the hook.
Hang the outer peripheral surface of the tube on both ends of the separated rod-shaped body
Pin and rod-shaped one end of wire rope for fixing
Move back and forth in the length direction of the main unit to attach and detach the other end of the wire rope
Arrange movable pins to lock freely, and
, And always downward by the spring force on both ends of the rod-shaped body
The shaft that is pressed against
The suspension ring integrally connected to the upper end of the shaft
And the lower ends of these shafts are
Lock lever pivotally attached to both ends of the cylindrical body
Connected to one end of the
The locking part that has been formed is moved up by the shaft
Move it down to below the lock lever when lifting the tube.
So that it can be locked to the tip of the movable pin
It is composed .

[0006]

When the pipe is slung by a pair of wire ropes in the pipe storage location, first, the wire rope is laid over the center of the pipe transferred to the lower part of the rod-shaped body, and the lower part of the rod-shaped body is centered. To the hook that is hanging vertically,
In this state, the length of the tubular body is directed in the longitudinal direction of the rod-shaped body while slightly lifting the hook and rotating the hook, and then the tubular body is temporarily suspended. After that , provided on both ends of the rod-shaped body
Wire ropes with one end fixed to each fixed pin
To the other end of these wire ropes,
By moving the movable pin, the movable pin is supported.
Sling by holding.

After slinging, the rod-shaped body projects from the upper surface on both ends.
When the rod-shaped main body is lifted by a hoist via a pair of hanging rings that are extended, the shaft of the hanging ring is raised against the spring.
Of the lock lever that moves and connects one end to its lower end.
The other end pivots downward and projects below the lock lever
The wire rope is locked at the tip of the moving movable pin to prevent the wire rope from coming off from the movable pin . In this state, when the pipe is transported to the pipe laying place, the rod-shaped main body is lowered and the pipe is lowered to a predetermined position, the load applied to both suspension rings is released.
The shaft moves down by the spring force and locks on the movable pin.
The locking part at the tip of the lock lever
The lock is released by the lock lever being released, and the ball is automatically removed by retracting the movable pin.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a rod-shaped main body having the same length as a pipe A to be lifted, which is equidistant from the center in the length direction to both front and rear ends. Hanging rings 2 and 2 are attached to the upper surface of the rod-shaped body 1 and hooks 3 are vertically suspended at the center of the lower surface. And a movable pin 5 are provided. A saddle 6 whose lower end protrudes downward from the lower surface of the rod-shaped main body 1 at a predetermined small interval at both front and rear ends of the rod-shaped main body 1;
The upper end of the saddle body 6 is fixed, and the lower end surface of the saddle body 6 is formed in a curved surface along the upper peripheral surface of the tube A.

Reference numerals 7 and 7 denote guide members formed of vertically long rectangular flat plates whose upper end portions are fixed to the front and rear end surfaces of the rod-shaped main body 1, and the lower part of which is vertically suspended from the lower surfaces of both ends of the rod-shaped main body 1. At the same time, the lower end is bent 7a in the direction of extension of the length of the rod-shaped main body 1. The length of the rod-shaped main body 1 does not necessarily have to be the same as the length of the tube, and the dimension between the opposing surfaces of the pair of front and rear guide members 7 can be the same as the length of the tube. I just need. Numeral 8 denotes an elastic member made of a rubber plate or the like which is layered on the lower surface of the saddle body 6.

As shown in FIG. 3, a pair of front and rear suspension rings 2, 2 are fixed guide cylinders 10 fixed in the rod-shaped main body 1.
The shaft 9 is connected to the protruding upper end of the shaft 9 which is vertically movably inserted into the inside, and the lower end of the shaft 9 protruding from the lower end of the fixed guide tube 10 has an intermediate portion pivoted to one side of the rod-shaped body 1. One end of the lock lever 11 which is freely pivotally connected 35 is rotatably connected to the lock lever 11, and an engagement portion 12 which is cut out in an arc shape is formed on the lower surface of the other end of the lock lever 11. Stop 1
2 is configured to engage and disengage with a circumferential groove 13 formed at the tip of the movable pin 5. Further, the fixed guide tube 10
The lower end of the shaft 9 protruding downward from the upper end of the fixed guide tube 10 is formed in a large diameter portion 9a which can contact the lower end surface of the fixed guide tube 10. A spring 14 is formed inside the fixed guide cylinder 10 to form a large diameter portion 9b to be in contact with and to constantly press the shaft 9 downward.

The fixed pin 4 and the movable pin 5
Is supported in a state of being bridged between a pair of front and rear brackets 15 and 16 integrally projecting from both side surfaces of the rod-shaped main body 1, and the fixing pin 4 is fixed between the brackets 15 and 16. As shown in FIG. 4, the movable pin 5 is inserted so as to be able to move back and forth in the longitudinal direction of the rod-shaped main body 1, and the leading end of the movable pin 5 protrudes from one side surface of the rod-shaped main body 1. To be able to come and go underneath.

Reference numeral 17 denotes an electric cylinder integrally connected to the base end of the movable pin 5 and a lot end thereof. The electric cylinder 17 is mounted on one side surface of the rod-shaped main body 1, and the electric cylinder 17 moves the movable pin 5 back and forth. It is configured as follows.

The hook 3 suspended from the center of the lower surface of the rod-shaped main body 1 has its shaft portion rotatably supported on the rod-shaped main body 1 in the plane direction, that is, around the axis. Reference numerals 18 and 18 denote a pair of front and rear wire ropes each of which has one end loop fixed to the front and rear fixing pins 4 of the rod-shaped main body 1 in a state of being inserted. 19
Is a sensor for detecting that the distal end peripheral groove 13 of the movable pin 5 has reached below the locking portion 12 of the lock lever 11 and stopping the operation of the electric silling 17.

Using the pipe lifting apparatus constructed as described above, the pipe A is transferred from the pipe storage place B on the ground side to the pipe laying place D in the shaft C as shown in FIGS. The work procedure for carrying in will be described. As shown in FIG. 5, a traversing rail 20 is erected at a certain height from the ground above the shaft C toward the pipe storage location B side, and two connecting hoists 21 are mounted on the traversing rail 20. The main body 1 can be freely moved up and down by connecting pulleys 23 which are mounted to run freely and hang the wire ropes 22 and 22 from the hoist 21 to the front and rear suspension rings 2 and 2 of the main body 1 via hooks 24, respectively. It is suspended on.

First, one pipe A is transferred from the pipe storage location B to a position below the hoist 21 moving to one end of the traversing rail 20, and the hoist 21 is operated to cause the main body 1 to move.
Descend. At this time, when the main body 1 is suspended from the traversing rail 20 via the hoist 21 in a state where the main body 1 is oriented in the length direction in the pipe propulsion direction for laying the pipe A in the ground, the pipe is transferred to a position below the same. The length of the pipe A thus formed is in a state in which the length direction of the pipe A is perpendicular to the main body 1.

In this state, the pipe A cannot be hung from the main body 1. Therefore, first, the wire rope 25 is hung over the center of the pipe A, and the hook 3 is suspended from the center of the lower surface of the main body 1. In this state, the main body 1 is slightly lifted, and the pipe A is manually displaced around the wire rope 25 to rotate the hook 3 in the plane direction, as shown in FIG. The main body 1 can be stably mounted on the top of the tube A. At this time, the tube A is suspended from the both ends of the main body 1 at a position where the tube A does not hit the guide members 7 which are vertically provided.

Thereafter, when the pipe A is suspended and the wire rope 25 is unraveled and the main body 1 is further lowered, the guide members 7, which are suspended from both ends of the main body 1,
7 are in sliding contact with both end surfaces of the tube A, the suspension position of the tube A with respect to the main body 1 is set at a fixed position, and
The lower surface of the front and rear saddle members 6 is in contact with the upper and lower peripheral surfaces of the front and rear portions of the tube 1 so that the tube A is regulated so as to be in an accurate suspension state. In this state, as shown in FIG. 7, wire ropes 18, 1 having one ends connected to the front and rear fixing pins 4, 4 of the main body 1, respectively.
8 is wrapped around the front and rear peripheral surfaces of the pipe A, and the other end ring is inserted between the brackets 15 and 16. Then, the other end of the wire rope 18 is supported by the movable pin 5.

When the slinging operation of the tube A is completed,
The pipe A is lifted by operating the hoist 21, and the pipe A is conveyed to the upper part of the shaft C as shown in FIG. 8 by moving the hoist 21 along the traversing rail 20. At the time of this lifting, a pulling force acts on the suspension ring 2 and its shaft 9
Moves upward until the large-diameter portion 9a comes into contact with the lower surface of the fixed guide tube 10 against the force of the spring 14, and the upward movement causes the lock lever 11 to rotate, causing the distal end locking portion 12 to move the movable pin 5 The movable pin 5
Is stopped.

Next, the wire rope 22 of the hoist 21
The pipe A is suspended at the pipe laying place D in the shaft C as shown in FIG. 9, and the pipe A previously buried in the ground with the pressing device E in the state of being laid in the embedding direction. And installed on the guide stand F installed between them. When the pipe A is supported on the guide base F, the load applied to the wire rope 22 of the hoist 21 is released, and the shaft 9 of the suspension ring 2 is moved down by the restoring force of the spring 14, and the lock lever 11 is moved. Is released from the peripheral groove 13 of the movable pin 5 and the lock is released.

When the unlocking is detected by an appropriate detecting means and the movable pin 5 is moved backward by the electric cylinder 17, the other end of the sling wire rope 18 is detached from the movable pin 5. Thereafter, the wire rope 22 of the hoist 21 is contracted to move the main body 1 from the shaft C in FIG.
As shown in FIG. 11, the pipe A is moved to the pipe storage place B side, and the next pipe A is slung and carried in the same manner as described above.

FIG. 12 shows another embodiment of the means for moving the movable pin 5 forward and backward.
The movable pin 5 is actuated by this. In this embodiment, the movable pin 5 can be advanced and retracted by using a spring force. That is, the spring receiver 26 is provided at an intermediate portion of the movable pin 5.
And spring receivers 27 and 28 having the movable pin 5 inserted therein are attached to both front and rear sides thereof, and a spring receiver 26 at an intermediate portion and front and rear spring receivers 27 and 2 are attached.
The springs 29 and 30 are interposed on the surface opposite to the shaft 8 respectively, and the operating shaft 31 is protruded from the spring receiver 26 in the middle.

With such a configuration, the operating shaft 31 is operated by manually inserting the other end of the wire rope 18 into the moving path of the movable pin 5 in the same manner as described above, thereby resisting the force of the spring 29. When the movable pin 5 is moved forward, the movable pin 5 is inserted through the other end of the wire rope 18,
In this state, the suspension ring 2 is slightly pulled up, so that the lock lever 11 is inserted into the distal end circumferential groove 13 of the movable pin 5.
The locking portion 12 is locked. When the locking of the lock lever 11 is released, the movable pin 5 is retracted by the restoring force of the spring 29 and the locking of the wire rope 18 is released.

In the operation of the movable pin 5 utilizing the spring force, the locking portion 12 of the lock lever 11
Is locked in the circumferential groove 13 of the movable pin 5 until the movable pin 5
Must be manually held in the forward position,
In this case, as shown in FIG. 13, a peripheral groove 32 is also provided at the base end of the movable pin 5, and another electric cylinder disposed in a vertical state on one side surface of the main body in the peripheral groove 32. What is necessary is just to comprise so that the lock pin 33 operated by 32 may be disengaged. That is, when the movable pin 5 is moved to the detection position of the sensor 19, the sensor 19 detects that the movable pin 5 has reached a predetermined position, activates the electric cylinder 32, and engages the lock pin 33 with the circumferential groove 32. It is configured to stop.

[0024]

As described above, according to the pipe lifting apparatus of the present invention, when the pipe is slung with a wire rope, the pipe is oriented in a direction crossing the length of the rod-shaped body. in the case where the a, suspended in a hook which is vertical set in central longitudinal direction of the rod-like body the central portion of the tube body by a wire rope to rotate the tube about the axis of the hook which may be a state in which along a lower surface in the longitudinal direction of easily and accurately rod-shaped body of the tube body by
And a bar-shaped book equidistant from this hook
A wire row for hanging around the outer surface of the tube at both ends of the body
The fixing pin that fixes one end of the
Move back and forth to detachably lock the other end of the wire rope
Since the movable pin and
The pipe is balanced and stable to the rod-shaped body by the yarope
It can be slung in the state and the slinging work
Just lock the other end of the wire rope to the movable pin
Therefore, it can be performed simply and reliably.

Further, a spring force is applied to both ends of the rod-shaped main body.
The shaft that is constantly pressed down by the
A suspension ring that is arranged and connected integrally to the upper ends of these shafts
These protrude upward from the upper surface of the rod-shaped
The lower end of the shaft is pivotally connected to both ends of the rod-shaped body.
Connected to one end of the lock lever
The locking part formed at the other end of the lever
When the tube is lifted, the lock
The tip of the above movable pin that protrudes below the bar
Hangs after slinging.
Lift the rod-shaped body via the lifting rope connected to the wheel
The suspension ring shaft moves upward against the spring and
The other end of the lock lever that connects one end to the lower end of
To the lower part of the lock lever,
Wire from the movable pin engages the tip of the movable pin are
-The rope can be prevented from coming off, and the pipe can be safely suspended.
Can be lifted.

Also, the pipe was transported to a predetermined place.
When the rod-shaped body is lowered and the tube is lowered, the load on both suspension rings is released and the shaft is
The tip of the lock lever that moved down and was locked to the movable pin
The stopper is disengaged upward from the movable pin , the lock by the lock lever is released, and the movable pin is retracted.
This makes it possible to automate the removal of the balls, thereby further improving the work efficiency.

[Brief description of the drawings]

FIG. 1 is a simplified side view of the entire apparatus,

FIG. 2 is a front view thereof,

FIG. 3 is a vertical sectional front view of a suspension ring portion and a lock mechanism portion,

FIG. 4 is a side view thereof,

FIG. 5 is a simplified side view showing a mode of turning the tube relative to the main body;

FIG. 6 is a simplified side view after turning.

FIG. 7 is a simplified side view of a state where a tube is slung.

FIG. 8 is a simplified side view of a state where the wafer is transported to the upper part of the shaft,

FIG. 9 is a simplified side view showing a state where a pipe is suspended in a shaft.

FIG. 10 is a simplified side view showing a state where the main body has been lifted by removing a sling,

FIG. 11 is a simplified side view of a state where the main body is returned to an original position,

FIG. 12 is a side view showing another embodiment of the movable pin operation mechanism;

FIG. 13 is a side view showing a modified example thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rod-shaped main body 2 Hanging ring 3 Hook 4 Fixed pin 5 Movable pin 6 Saddle body 7 Guide member 9 Shaft body 11 Lock lever 18 Wire rope

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Atsushi Takubo 2-2-2 Matsuzakicho, Abeno-ku, Osaka-shi Okumura Gumi Co., Ltd. (56) References JP-A-56-78792 (JP, A) JP-A-1 -181691 (JP, A) Japanese Utility Model 3-9383 (JP, U) JP-B-59-32395 (JP, B2)

Claims (1)

(57) [Claims] 1. A hook on the lower surface at the center in the longitudinal direction of the rod-shaped body.
And a bar-shaped book equidistant from this hook
A wire row for hanging around the outer surface of the tube at both ends of the body
The fixing pin that fixes one end of the
Move back and forth to detachably lock the other end of the wire rope
Movable pins are arranged respectively, and both ends of the rod-shaped main body are
Shaft that is constantly pressed downward by spring force
The body is arranged so that it can move up and down and is integrated with the upper end of these shafts.
Make the connected suspension ring project upward from the upper surface of the rod-shaped body.
And the lower ends of these shafts are
Each end is connected to one end of a lock lever that is
And the locking part formed at the other end of the lock lever is
Lifting the pipe by lowering it by moving the shaft integral with the suspension ring
Above the lock lever to protrude below the lock lever when
A tube lifting device characterized in that it is configured to be locked to a tip portion of a movable pin .