JP2520233Y2 - Pipe hanger - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pipe hanger used in various industries.
Particularly, the present invention relates to a pipe hanger suitable for carrying and transferring relatively heavy pipes such as steel pipes and cast iron pipes.

[Conventional technology]

Conventionally, in the case of hoisting and carrying a pipe, a means is generally used in which a rope having a hanging hook fixed to the tip thereof is used, the hanging hook is hung on both ends of the pipe to be carried, and hoisted by a lifting machine.

With such a means, a slinging worker needs to hang the hanging hooks off the openings at both ends of the transported pipe each time, which requires a great labor cost and poses a problem regarding work safety and efficiency. Because of the large number, there has been developed a hanger that can automate the slinging work of the pipe. For example, in Japanese Patent Laid-Open No. 53-13758, a movable bar for positioning the hoisting rope can be expanded and contracted. A pipe hanger (hereinafter referred to as “A device”) including a built-in hoist bar has been proposed, and Japanese Patent Publication No. 51-47219 discloses a hoist rope suspended from a hoist beam by a telescopic arm. A pipe hanger (hereinafter referred to as device B) is disclosed.

[Problems to be solved by the device]

Based on long-term work experience related to the transportation of long members, the present inventors have studied the efficiency of transportation of various pipes, particularly long and heavy pipes, and have studied the length, diameter, and weight of the pipes to be transported. , The transportation lot, the transportation frequency, etc. were analyzed, but the pipe hanger that can handle all kinds of pipes with different diameters and lengths inevitably complicates the structure, increases the manufacturing cost, and has poor workability. We have obtained the knowledge that maintenance and inspection costs will increase.

For example, the device A also has the ability to cope with pipes having different diameters and lengths, but the structure is complicated and the number of transportable pipes is about 2. Therefore, there are problems in manufacturing cost and workability.

In addition, although device B can handle about three pipes, it requires as many arm extension / contraction bodies as the number of pipes.
There is a problem that the structure is complicated and it is not easy to deal with the case where the diameter changes.

As a result of examining pipe transportation in a production factory, the present inventors often have different diameters as production lots,
It was found that the length was almost constant regardless of the aperture, and it was a slight difference even when the length was different.

Therefore, regarding such pipe transportation with characteristics, it is clear that a dedicated pipe hanger suitable for each condition enables the most efficient transportation and is economical, and the diameter is different for each lot. Although the length is different, we examined the efficiency of transportation by using a pipe hanger that is capable of automatic slinging, which is suitable for simultaneous transportation of multiple pipes of almost regular length, but there is no suitable conventional pipe hanger. I knew that.

SUMMARY OF THE INVENTION The present invention provides a pipe lifting device capable of efficiently and safely transporting pipes having the same length or a small difference in length, that is, a regular length or a substantially regular length, regardless of the diameter. Another object of the present invention is to provide a pipe hanger which has a low manufacturing cost, is easy to operate, and does not require manpower for slinging.

[Means for solving the problem]

The pipe hoisting tool according to claim 1, which is in line with the above object, includes a long main beam having a hoisting tool detachably engaged with a hoisting hook of a lifting machine, and both ends of the long main beam. Suspended metal fittings fixed, and a plurality of hoisting ropes having a hanging hook at the tip and oscillatingly suspended on each of the suspension metal fittings,
The length of the long main beam is fixed to the bearing metal fittings fixed to both sides of the long main beam in the longitudinal direction of the long main beam with a gap between the suspension metal fittings fixed to both ends of the long main beam. A guide arm suspended so as to be swingable in the axial direction, a plurality of guide springs mounted on a tip portion of the guide arm and elastically engaged with the suspension hook, and the guide spring are provided in the long main beam. And a hoisting rope guide device provided with positioning devices for guiding each to a symmetrical position with the vertical plane passing through the long axis of the guide arm as a symmetry plane, and a swingable telescopic guide arm erected between the guide arm and the long main beam. A cylinder, a drive source supply device for the telescopic cylinder for swinging the guide arm fixed to the long main beam, and the lifting rope guide device and the guide arm swing device provided in the operator's cab of the lifting machine. It has the use telescoping cylinder and a remote control device.

A pipe hanger according to a second aspect is the pipe hanger according to the first aspect, wherein the guide arm swinging telescopic cylinders are arranged on both sides of the elongated main beam below the elongated main beam. It is provided with a plurality of rocking suppressing metal fittings that are vertically erected and can come into contact with the body of the pipe to be transported.

The pipe hanger according to claim 3 is the pipe hanger according to claim 1 or 2, wherein the hoisting rope retaining spring is provided on the guide spring guide of the hoisting rope guide device and the hoisting rope immediately above the hoisting hook. It is stretched.

[Action]

The pipe hoisting device of the present invention allows a plurality of hoisting ropes swingably suspended by suspension metal fittings fixed to both ends of a long main beam to bear the entire weight of a pipe to be transported, and a hoisting rope guide tool. Since the weight of the pipe to be transported is not burdened by the or the lifting rope guide device, safe work transportation can be performed.

In addition, since the hoisting rope is guided by the swinging operation of the guide arm by remote control via the hoisting rope guide device so as to be able to approach and separate in the longitudinal direction of the long main beam, the hoisting hook at the tip of the hoisting rope is It is possible to securely hang it on the open end of the pipe to be transported and remove it without requiring manpower.

Further, since the hanging hook of the hoisting rope is elastically engaged with the guide spring provided in the hoisting rope guide device, an unreasonable force is applied when the hoisting rope is hooked and unhooked from the open end of the transported pipe. Without failure, there are few failures.

Next, the hoisting rope guide device is a positioning device that guides a plurality of hoisting ropes to respective symmetrical positions via a plurality of guide springs with a vertical plane passing through the long axis of the long main beam as a plane of symmetry. Therefore, when hoisting the transported pipes having different diameters, the hoisting rope can be quickly guided to the most suitable hoisting position.

Further, since a retractable cylinder for swinging the guide arm is installed between the guide arm and the long main beam, the guide arm can be freely stroked as necessary.

In addition, the telescopic cylinder for swinging the guide arm and the hoisting rope guide device are connected to the remote control device provided in the operator's cab, so preparation for using the pipe hanger is easy,
In addition, workability is extremely excellent because replacement can be done quickly.

Furthermore, if there are multiple rocking restraint fittings vertically hung between the telescopic cylinders for rocking both guide arms on the bottom of the long main beam and that can abut the body of the transported pipe, Since the swing of the tool can be suppressed early, the work efficiency can be improved. When the hoisting rope retaining spring is stretched around the hoisting rope guide tool of the hoisting rope guide device and the hoisting rope near the hook, the direction and position of the hook will be almost constant, including remote control operation. The pipe hanging work can be performed efficiently.

〔Example〕

Next, the present invention will be described in detail with reference to the drawings. 8th
FIG. 9 is a partial schematic explanatory view for explaining a slinging procedure of the pipe suspension 1 according to the present invention. A suspension fitting 4 is fixed to an end portion 3 of a long main beam 2, and the suspension fitting is further provided. Four
A plurality of hoisting ropes 6 each having a hoisting floc 5 at the tip thereof are swingably suspended in the.

Further, a bearing fitting 7 is fixed to the inside of the suspension fitting 4, and a guide arm 8 is suspended on the bearing fitting 7 so as to be swingable in the long axis direction of the long main beam 2.

Further, between the guide arm 8 and the long main beam 2, one end is rotatably supported by a support fitting 9 attached to the long main beam 2, and the other end is rotated by the guide arm 8. Telescopic cylinder for swinging guide arm 10
Is installed. A hoisting rope guide device 11, which will be described in detail later, is attached to the tip of the guide arm 8, and a plurality of guide springs are provided in the hoisting rope guide device 11.
12 and the plurality of suspension hooks 5 are elastically engaged with each other.

Then, as shown in FIG. 8, the telescopic cylinder 10 for swinging the guide arm is actuated to guide the guide arm 8 upward, and a lifter (not shown) is used from above the transported pipe 13. Then, the long main beam 2 is hung down, and when the hanging hook 5 reaches the position near the position shown in FIG. 9, the telescopic cylinder 10 for swinging the guide arm is actuated. The hanging hook 5 can be hung. In this case, the guide spring 12 always acts in the direction in which the hanging hook 5 is pressed against the mouth end edge 14 of the transported pipe 13, so that the hanging hook 5 does not come off from the mouth end edge 14.

Now, when the long main beam 2 is lifted in this state, the weight of the transported pipe 13 is entirely applied to the lifting rope 6,
The hoisting rope guide device 11 and the guide spring 12 do not bear any load on the pipe 13 to be transported.
12 bears only the action of pressing the hanging hook 5 against the mouth edge 14.

Needless to say, when removing the hanging hook 5, the procedure is reversed.

It is extremely easy to hang the pipe 13 to be transported by the pipe lifting device of the present invention, and the stability after slinging is good, and there is no risk of accidents due to the lifting hook 5 coming off during transportation. There is no need for slingers.

Next, the characteristic feature of the pipe lifting device 1 according to the present invention is that, in addition to the sling described above, a plurality of the lifting ropes 6 are used and the same number of pipes to be transported can be quickly lifted and efficiently transported regardless of the caliber. Therefore, although the above-mentioned examples of FIG. 8 and FIG. 9 have been described with respect to one transported pipe for convenience of description,
The pipe hanger of the present invention can carry one or more pipes freely, which will be described in more detail.

Now, FIG. 10 and FIG. 11 show the guide springs 12a to 12d of the present invention in the vertical plane 15 passing through the long axis of the long main beam 2.
The symmetry planes are used as the planes of symmetry.
15 is a schematic explanatory view for explaining the function of the positioning device 16 that guides to a symmetrical position in a direction orthogonal to 15 by the positioning device 16 and the lifting ropes 6a to 6d via the guiding springs 12a to 12d. This shows the status of positioning.

As described above, one end of each of the guide springs 12a to 12d is fixed to the movable guide end (not shown) of the positioning device 16, and the other end is fixed to the hanging hooks 5a to 5d. When the surface 15 is moved to a symmetrical position as a symmetrical surface, the lifting ropes 6a to 6d can be moved to the symmetrical positions via the guide springs 12a to 12d.

Therefore, as shown in FIG. 10, four small-diameter pipes 13a to 13d having a small diameter are conveyed at a time by using the four hoisting ropes 6a to 6d, and then the guide springs 12a to 12d are respectively attached to the vertical planes 15.
Can be immediately lifted by moving them to symmetrical positions with respect to each other as symmetry planes, that is, to positions suitable for lifting large diameter pipes 13e to 13h to be transported as shown in FIG.

That is, as is clear from the figure, the induction springs 12a and 12d, 12b and 12c are in symmetrical positions with respect to the vertical plane 15 as a plane of symmetry at any time, and as a result, the induction springs 12a and 12d, 12b and 12c. Lifting ropes 6a and 6 engaged with
The d, 6b and 6c occupy symmetrical positions with the vertical plane 15 as a plane of symmetry.

Next, the pipe hanger 1 of the present invention will be described in more detail with reference to examples.

FIG. 1 is a schematic front view of a pipe hanger 1 according to the present invention, and the same reference numerals as those in FIGS. 8 and 9 are the same members, and thus the description thereof will be omitted.

In FIG. 1, 17 is a hoisting hook for a lifting machine, 18 is a hoisting wire (a tool to be hoisted), and 19 is a long main beam 2
It is a suspended pin fixed to the.

Further, 20 is a telescopic cylinder for swinging the guide arm.
This is a frame that supports the operating air tank 21 and the drive motor 22 that form the drive source supply device 10 and the illustration of the drive conductive cable and control cable is omitted.

The actuating source of the guide cylinder swinging telescopic cylinder 10 is not limited to the pneumatic type, but may be a hydraulic type, an electric type, or the like as appropriate according to the application.

The operating procedure of the pipe suspending tool 1 according to the embodiment is as described with reference to FIGS. 8 and 9, and the pipe to be transferred can be operated freely from the cab by using the remote control device. 13 can be transported.

Next, FIG. 2 is a schematic side view of the pipe hanger 1 according to the present invention, and the same reference numerals as those in FIG.

In FIG. 2, 23 is a supporting frame of the hoisting rope guide device 11, and the hoisting rope guide device 11 is the supporting frame.
It is fixed to the tip of the guide arm 8 via 23.

By the way, the lifting rope guide device 11 has the hanging hook 5
A plurality of guide springs 12 elastically engaged with the guide springs 12 and a vertical plane 15 passing the guide springs 12 through the long axis of the long main beam 2.
Is provided as a symmetry plane and is provided with a positioning device 16 that guides each to a symmetrical position freely. The details of the guiding spring 12 and the positioning device 16 will be described with reference to FIGS.

FIG. 3 is a schematic plan view of the positioning device 16, wherein 24a and 24b are vertical beams of the supporting frame 23, and 25 is a vertical beam 24a and 2b.
It is a horizontal beam fixed to 4b.

Reference numeral 26 denotes bearing units 27a to 27f fixed to the transverse beam 25.
The left and right screw shafts are axially supported by 1-thread screws 28a and 28b and 3-thread screws 29a and 29b, and 30a and 30b are the 1-thread screws 28, respectively.
This is a flexible shaft coupling that connects a and the triple thread 29a and the single thread 28b and the triple thread 29b.

Reference numeral 31 denotes a sprocket fixed to the central portion of the screw shaft 26, which is rotatably driven via a sprocket 22 rotatably supported by the drive shaft of a geared motor 32 and a drive chain 34. 35a to 35d are the screw shafts 26
Guide spring guides having a movable nut described later as a main member, which is screwed movably onto the guide springs, and 36a and 36b slidably support the loose fittings described below provided on the guide spring guides 35a to 35d. Guide shafts 37a to 37d are guide spring support members fixed to the guide spring guide members 35a to 35d.

For convenience of explanation, the induction spring is not shown.

By the way, 38a and 38b are sliding guide rods of the lifting rope 6, which are used to lift the lifting rope 6 upwards or to guide the springs.
The hoisting rope 6, which moves as the guide spring moves in the horizontal direction, is slidably guided via 37a to 37d.

Next, FIG. 4 is a schematic vertical sectional view taken along line AA of FIG.
The loose fitting 39a is slidably loosely fitted on the guide shaft 26b and stably supports the posture of the guide spring guide 35c as described later in detail. Further, one end of the guide spring 12 is pivotally supported by a guide spring support member 37c, and the other end is pivotally supported by an upper portion of the hanging hook 5 so as to be swingable.

 FIG. 5 shows a schematic sectional view of the guide spring 12.

Next, FIG. 6 is a schematic vertical sectional view taken along the line BB of FIG. 3, showing a state in which the hoisting rope 6 can freely slide along the sliding guide rod 38a. FIG. 7 is a schematic vertical sectional view taken along the line CC of FIG. 3, and the hoisting rope 6 is the hoisting rope guide device 11 described above.
And as mentioned above, it can be separated.

Next, the operation procedure of the positioning device 16
It will be described with reference to the drawings.

Now, as described above with reference to FIG. 2, the lifting rope is placed at a position suitable for lifting the transported pipes 13a to 13d.
When guiding the gears 6a to 6d, the geared motor 32 is driven to rotate the screw shaft 26, and the single thread 28
The guide spring guides 35b and 35c screwed into the a and 28b move in opposite directions about the sprocket 31, and the guide spring guides 35a and 35d screwed into the three-thread screws 29a and 29b are opposite to each other. The guide spring guide in the opposite direction
It moves at 3 times the speed of 35b and 35c.

That is, since the transported pipes 13a to 13d are arranged in parallel in the lateral direction, the transported pipes 13a located outside are arranged.
In order to reach the hoisting ropes 6a and 6d corresponding to the hoisting ropes 6a and 6d, the guide spring guide tools 35a and 35d for guiding the hoisting ropes 6a and 6d are arranged inside the pipes 13b and 13c to be transported. The efficiency can be significantly improved by moving the hoisting ropes 6b, 6c corresponding to the guide spring guides 35b, 35c faster than the guide spring guides 35b, 35c.

Next, FIG. 4 shows the detailed structure of the sprocket 31, 33, the guide spring support 37c and the guide spring 12 in the guide spring guide 35c. It is pinned to the base end, and the suspension hook 5 is elastically stretched according to the movement of the guide spring support 37c, and the suspension rope 6 moves while sliding along the sliding guide rod 38b accordingly. .

FIG. 5 is a schematic sectional view according to an embodiment using a coil spring as the guide spring 12, but the present invention is not limited to this and various springs may be used. Now, the structure of the guide spring guide 35b will be described in detail as a representative.

As shown in FIG. 6, the guide spring guide 35b is mainly composed of a guide spring support 37b, a loose fitting 39b and a movable nut 40b. The movable nut 40b is screwed onto the single thread 28a. Since the single-thread screw 28a rotates forward and backward, the single-thread screw 28a can freely move in either the left or right direction.

Further, since the loose fitting 39b is loosely fitted onto the guide shaft 36a extending parallel to the screw shaft 26, the loose fitting 39b moves together with the movement of the movable nut 40b and cooperates with the movable nut 49b to guide the guide spring. Tool 3
It functions to keep the posture of 5b horizontal.

By the way, it goes without saying that the positioning device 16 described in detail above is more effective as the diameters of the transported pipes 13a to 13d are larger.

Therefore, it is desirable that the screw shaft 26 be designed in accordance with the intended diameter of the transportation pipes 13a to 13d and the frequency of changing the transportation lot.

Next, FIG. 7 is a schematic cross-sectional view showing a mounting state of the guide spring guide 35a, the vertical beam 24a, and the horizontal beam 25. As for the movable nut 40a and the loose fitting 39c, the movable nut 40b and the loose fitting are shown. The description is omitted because it is similar to 39b.

Next, FIG. 12 shows the swing restraining metal fittings 41a, 4 according to the present invention.
1B is a schematic explanatory view of a structure for explaining 1b, showing the swing suppressing fitting.
Reference numerals 41a and 41b vertically extend between the telescopic cylinders 10 and 10 for swinging both guide arms on the lower surface of the long main beam 2 so as to come into contact with the body of the pipe 13 to be transported. In the figure, 42a and 42b are connection pipes having pin holes formed at appropriate intervals by the constituent members of the rocking suppression metal fittings 41a and 41b, and the restraining leg metal fittings 43a and 43b are appropriately connected to the connection pipes 42a and 42b. Pin-engaged.

13 (a) and 13 (b) show the upper part of the rocking suppressing metal fitting 41a.
It is a schematic explanatory drawing of a lower member, and the upper part 44a of the restraint leg metal fitting 43a
(The pin hole is not shown) is inserted from the lower end of the connecting pipe 42a and is engaged with the pin. However, without being limited to this configuration, the connection pipes 42a, 42b and the restraining leg fittings 43a, 43b may be elastically engaged in the vertical direction by using springs.

When the long main beam 2 swings during transportation, if the swing restraining metal fittings 41a and 41b are brought into contact with and pressed against the body of the pipe 13 to be transported before hook engagement, the long main beam 2 will move. Swing In particular, swinging to the left and right can be swiftly accommodated, which improves work efficiency.

Although two examples of the rocking suppressing metal fittings 41a and 41b are shown,
You are free to install more than one. However, in the study conducted by the present inventors, two pieces were sufficient for many works.

Next, FIGS. 14 and 15 show an embodiment in which a hoisting rope retaining spring 45 is stretched on the hoisting rope guide tool 35c provided on the hoisting rope guide device 11 and the hoisting rope 6 near the hoisting hook 5. In the schematic side view and the schematic front view, when the lifting rope 6 is loosened, the direction and position of the hanging hook 5 are not fixed, and the hook engaging work may be difficult. It becomes possible to prevent it by the action.

At this time, in order to work cooperatively with the guide spring 12, the positional relationship between the two is arranged as shown in FIG.
Is always directed toward the mouth end of the transported pipe, and the best effect can be expected. In FIG. 14 and FIG. 15, reference numeral 46 denotes a clasp of the lifting rope retaining spring 45 and the lifting rope 6.

[Effect of device]

As described in detail above, the pipe hoisting tool according to the present invention has a simple structure, is easy to operate and is safe, and in addition, there is little damage to the members such as the hoisting rope, and it has a fixed length or Since it is possible to quickly transport a substantially fixed length pipe to be transported without requiring human labor,
The practical effect is extremely large.

[Brief description of drawings]

FIG. 1 is a schematic front view of a pipe hanger according to the present invention, and FIG.
FIG. 3 is a schematic side view of a pipe suspension according to the present invention, FIG. 3 is a schematic plan view of a positioning device, FIG. 4 is a schematic vertical sectional view taken along line AA of FIG. 3, and FIG. Cross section,
FIG. 6 is a schematic vertical sectional view taken along line BB of FIG. 3, and FIG.
FIG. 8 is a schematic vertical sectional view taken along line CC of FIG. 8, FIG. 8 and FIG. 9 are partial schematic explanatory views for explaining the slinging procedure of the pipe suspending device according to the present invention, FIG. 10 and FIG. FIG. 12 is a schematic explanatory view for explaining the function, FIG. 12 is a schematic explanatory view of the structure of the swing suppressing metal fitting, and FIGS.
14 and 15 are a schematic side view and a schematic front view of a lifting rope retaining spring. [Explanation of reference symbols] 1 ... pipe suspension, 2 ... long main beam, 3 ... end,
4 ... Suspension metal fittings, 5, 5a-5d ... Hanging hooks, 6, 6a-
6d: Lifting rope, 7 ... Bearing fitting, 8 ... Guide arm, 9 ... Support fitting, 10 ... Telescopic cylinder for rocking guide arm, 11 ... Lifting rope guide device, 12, 12a-12d
...... Induction spring, 13 ...... Transported pipe, 13a-13d ...
… Transported pipe, 13e to 13h …… Transported pipe, 14 …… Port edge, 15 …… Vertical surface, 16 …… Positioning device, 17 …… Hoisting hook, 18 …… Hoisting wire, 19 ...... Hanging pins,
20 …… Frame, 21 …… Operating air tank, 22 …… Drive motor, 23 …… Supporting frame, 24, 24a, 24b …… Vertical beam, 25 …… Horizontal beam, 26 …… Screw shaft, 27
a to 27f …… Bearing unit, 28a, 28b …… Single thread screw, 29
a, 29b …… Three-thread screw, 30a, 30b …… Flexible shaft coupling, 31 ……
Sprocket, 32 …… Geared motor, 33 …… Sprocket, 34 …… Drive chain, 35a ～ 35d …… Induction spring guide, 36a, 36b …… Guide shaft, 37a ～ 37d ……
Guide spring support, 38a, 38b ... Sliding guide rod, 39a
~ 39c …… Free play, 40a, 40b …… Movable nut, 41a, 41b
…… Swing suppression metal fittings, 42a, 42b …… Connection pipes, 43a, 43b ……
Holding foot metal fittings, 44a …… Upper part of the holding foot metal fittings, 45 …… Spring rope retaining spring, 46 …… Retaining metal

Claims (3)

(57) [Scope of utility model registration request] 1. A long main beam having a hoisting tool that is detachably engaged with a hoisting hook of a hoist, a suspending metal member fixed to both ends of the long main beam, and a tip end thereof. There are gaps between the plurality of hoisting ropes that have hanging hooks and are oscillatedly suspended by the respective suspension fittings, and the suspension fittings that are fixed to both ends of the long main beam. Bearing metal fittings fixed to both sides of the long main beam in the long axis direction, guide arms suspended so as to be swingable in the long axis direction of the long main beam, and attached to the front end of the guide arm, A suspension including a plurality of guide springs elastically engaged with the suspension hook, and a positioning device that guides the guide springs to symmetrical positions with the vertical plane passing through the long axis of the long main beam as a symmetrical plane. Upper rope guide device, the guide arm and the long A telescopic cylinder for swinging the guide arm installed between the main beams, a drive source supply device for the telescopic cylinder for swinging the guide arm fixed to the long main beam, and a driver's cab provided in the lifting machine. A pipe lifting device, comprising: the lifting rope guide device; and a remote control device for the telescopic cylinder for swinging the guide arm. 2. A plurality of swings vertically provided between the telescopic cylinders for swinging the guide arms, which are disposed on both sides of the long main beam, and which are abuttable to the body of the transported pipe. The pipe hanger according to claim 1, further comprising a motion suppressing metal fitting. 3. The pipe hanger according to claim 1 or 2, wherein a hoisting rope retaining spring is stretched on the hoisting rope directly above the hoisting rope guide device and the hoisting hook of the hoisting rope guide device.