JPH0732505Y2 - Pipe loading platform for steel pipe transport and loading equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improvement of a pipe stacking mount of a steel pipe conveying and stacking device used for stacking medium and large diameter pipes.

[Conventional technology]

When dipping a medium- or large-diameter pipe into a hold or warehouse,
Conventionally, each of these steel pipes is carried by a crane to the vicinity of the loading position, and an operator rolls the steel pipe to a predetermined loading position for loading. However, since such work is inefficient and the workers under the crane are endangered, the steel pipe transport stowage device has recently been used for this kind of work.

The steel pipe transport and stowage device loads multiple steel pipes on the gantry,
This is a device for transporting this gantry by a rubber crawler type drive vehicle to the vicinity of the loading position, where the gantry is inclined forward and the steel pipe on the gantry is rolled out to a predetermined position.

FIG. 6 shows an example of a conventional steel pipe conveying and stacking device, which is related to an application by the present applicants (Japanese Patent Application No. 62-238007).

The steel pipe transport stowage device shown in the figure comprises a drive vehicle 2 of a rubber crawler 1 suitable for traveling on a floor or on a pipe, and a mounting base 3 for pipe mounting.
It consists of and.

The pedestal 3 for pipe attachment, which is detachably connected to the front part of the drive vehicle 2 through the parallel link mechanism 14, is a frame-shaped pedestal in which a plurality of steel pipes 4 can be juxtaposed, and the steel pipes 4 can be released to stop falling. A tip stopper 5 and a pair of parallel beams 8 configured so that the front ends of the tubes juxtaposed on the upper surface are rotatably pivoted near the tip of the gantry so that the hydraulic cylinder 7 can lift the rear part upward. It is a stand provided with a stacking mechanism such as a set of releasable movement stoppers 9 provided reciprocally along the beam and a descending guide slope 10 protruding from the tip of the stand.
All operations such as releasing the tip stopper 5 and the moving stopper 9 or lifting the beam 8 can be performed from the transport seat 2'of the drive vehicle 2.

According to this stowage base 3, the plurality of steel pipes 4 loaded on the base by a crane or the like drive the vehicle 2 to the vicinity of the stowage position.
After being transported by the beam, the beam 8 can be operated remotely from the driver's seat 2 '.
When the front end is inclined and the stopper 5 is released, the descending guide slope 10 is rolled by its own weight to be transferred to a predetermined stacking position and stacked. At this time, the movement stopper 9
Is moved to a position where the second pipe is stopped when the leading pipe is stopped by the tip stopper 5, and when the leading pipe is moved out, it moves forward to move the second pipe to the tip stopper 5.
It is operated to guide to the position. As a result, the plurality of steel pipes 4 loaded on the gantry are gently transferred one by one from the beginning and stacked.

[Problems to be solved by the device]

However, the conventional pipe stacking mount 3 described above is not compatible with the steel pipe 4.
Since it was a method of rolling and stacking
If the is a welded pipe, there were the following problems.

That is, the weld portion of a straight seam welded pipe formed by the UOE method, the roll bending method, etc. usually has an uneven bead with a raised bead. When such a welded steel pipe 4 is stacked on the conventional pipe stacking mount, the welded part of the steel pipe is contacted with the adjacent steel pipe and stacked, and stress concentrates there to cause bead cracking. Or, an accident may occur in which the outer surface of the other pipe is scratched.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a pipe stacking pedestal capable of stacking welded portions of a steel pipe without contacting adjacent steel pipes.

[Means for Solving the Problems]

The present invention that achieves the above object is a pipe stacking mount 3 of a steel pipe conveying and stacking device, which comprises a rubber crawler type drive vehicle 2 which can be moved forward and backward, and a pipe stacking mount 3 connected to the drive pipe 2. The collision wall 11, a pair of parallel beams 8 arranged side by side on the upper surface, the front end of which is rotatably pivoted near the tip of the gantry so that the rear part can be lifted upward by a hydraulic cylinder, and the gantry. Releasable tip stopper 5 that stops the fall of the pipe at the tip
And a downward guide slope 10 of the pipe projecting from the tip of the gantry. A pair of the beams 18 and a plurality of rollers 12 that rotate only in the forward direction of the gantry are arranged in series on the upper surface of the downward guide slope 10. The set of beams 8 is provided with a tube push plate 13 which is reciprocable along the beam from behind to near the front end of the beam.

In this case, the tube pushing plate 13 is preferably formed in a dogleg shape in which the tube pushing surface 13 'is in contact with the tube 4 at two points.

[Action]

As shown in FIG. 2B, a plurality of steel pipes 4 ₁ and 4 ₂ loaded on the roller 12 of the beam 8 with the welded portion 4 ′ aligned at the 12 o'clock position by a crane or the like are provided at the tip stopper 5 It is carried to the loading position by the drive vehicle 2 in a form sandwiched between the tube push plate 13 and the tube push plate 13. Then, stop the advancement of the drive wheel 2 at the top of the steel tube 4 ₁ of the gantry is in contact with the directly in front of the wall surface or already product Tagged steel pipe 4 _a of the stowage position, the beam 8 by operating the hydraulic cylinder 14 Tilt forward. Next, the tip stopper 5 is released, the pipe pushing plate 13 is advanced, and the steel pipe 4 on the mount is moved to the wall surface or the steel pipe 4 _a.
And the tube push plate 13. In this state, when the driving vehicle 2 is moved backward and the tube pushing plate 13 is moved forward, the gantry 3 moves the beam 8 and the roller 12 of the descending guide slope 10 to each other.
Of the steel pipe 4 slides through the lower part. At this time,
The forward speed of the tube push stopper 13 is made slightly higher than the marching speed of the gantry 3. As a result, the steel pipe 4 on the mount is at the top.
4 ₁ successively leave the nonrotating from (i.e. weld 4 'remains at the 12 o'clock position) falls substantially vertically, Yuku already attached product to the valley of the steel pipe group 4 attached product. Therefore, the welded portions 4'of the stacked steel pipes are prevented from contacting with each other, and the beam cracking can be prevented.

〔Example〕

 Hereinafter, embodiments will be described with reference to the drawings.

FIG. 1 is a perspective view showing a steel pipe conveying and stacking device, 2 is a driving vehicle, and 3 is a pipe stacking mount according to the present invention.

The second drive wheel is a rubber crawler 1 drive type. This is because it is possible to move forward and backward freely on the arranged steel pipes, and to prevent the surface of the steel pipes from being flawed. The chassis of the rubber crawler is equipped with a swivel base (not shown) capable of rotating in the normal direction and the reverse direction, to which a parallel link mechanism 14 is attached, and further, a driver's cab 2'and the like are attached. In the driver's cab, operation of the driving vehicle, operation of the parallel link mechanism, operation of auxiliary equipment, connection and disconnection of the pedestal 3 for pipe mounting, and operation of all the functions of the pedestal for pipe mounting can be intensively performed. It is like this.

The parallel link mechanism 14 is provided with a hydraulic cylinder 15 ₁ for vertically raising and lowering the front surface and a hydraulic cylinder 15 ₂ for inclining the front surface, and _{one of} the devices for connecting the pipe loading platform 3 is provided on the front surface thereof. ing.

As shown in FIGS. 2 (a) and 2 (b),
The front and rear beam members 3 _a1 and 3 _a2 and the left and right beam members 3 _b1 and 3 _b2 are formed in a frame shape, and on the rear beam member 3 _a2 , the other side of the connecting device is provided on the back surface. There is a wall 11 and left and right girders 3 _b1 , 3 _b2
Down guide slopes 10, 10 for lowering the steel pipe from the gantry are provided at the tip of the, and tip stoppers 5, 5 are provided inside the descend guide slopes. And left and right girder materials
On the outside of 3 _b1 and 3 _b2 , the front is rotatably attached to the shaft 16,
A pair of parallel beams with a hydraulic cylinder 7 at the rear
8 and 8 and tube push plates 13 and 13 that can reciprocate on the beam 8 from rear to front, respectively.

The descending guide slopes 10 and 10 are girder members 3 _b1 and 3 _b2 formed in a groove shape.
Is provided by extending the tip to the front, and its open upper surface is a slope. Inside the groove of the slope 10, as shown in FIGS. 3 (a), (b) and (c), an underframe 17 having a plurality of rollers 12 mounted in series at regular intervals can be fastened with bolts 18. When the underframe 17 is fastened, the rows of rollers 12 are formed on the slope 10 at the same inclination as the slope. Each of these rollers 12 incorporates a rolling bearing 12 'that rotates only in the forward direction, and the surface thereof is induction hardened.

Tip stopper 5,5 are provided on the inner side of the drop guide slopes 10 and 10, undulations around the axis possible claws 5 _a (FIG. 2 (b) see) and, standing state the pawl by pushing the lower end of the pawl a hydraulic cylinder 5 _b to maintain, when the pressing process of the hydraulic cylinder is released by the pawl 5 _a collapses by the weight of the steel pipe, namely a airbag 5 _c for receiving the nail 5 _a in face down process, the standing state of the claw 5 _a An air supply / exhaust device (not shown) that supplies air to the air bag by using the
It consists of and.

A pair of beams 8 provided outside the left and right girders 3 _b1 , 3 _b2 ,
8 is provided with a plurality of rollers 12 arranged on the upper surface thereof in series at regular intervals. These rollers 12, like the rollers provided on the descending guide slopes 10 and 10, are rollers having a rolling bearing 12 'that rotates only in the forward direction, and are shown in FIGS. 4 (a), (b) and (c). So its axis 1
2 "The side walls 8 of the interposition beam ', 8' front end 8 _a of bridging is provided between. The beam 8, 8 spar 3 _b1, 3 _b2
Is formed on a bearing rotatably mounted on a shaft 16 projecting outward from the side surface of the front end of the beam, and the rear end _8b of the beam is provided with an elevator groove of the beam and power 23 of the tube pushing plate 13 described later. It is formed on the base for mounting.

The number of beams 8 in the illustrated example is two in the case of a 56-inch large diameter pipe, 28
In the case of inch medium diameter pipes, 5 rolls 12 at right angles.
It can be loaded on the line.

The beam lifting mechanism is not shown in detail in the drawing,
In the illustrated example, the chain 19 is attached to the base _8b as shown in FIG.
, One end of which is connected, and the other end is connected via a pulley to the piston rod of the hydraulic cylinder 7 installed on the impact wall 11,
There is a mechanism for moving the piston rod up and down by extension and contraction.

Further, rails 21 and 21 having a U-shaped cross section are provided on the outer surfaces of both side walls 8'and 8'of the beams 8 and 8, respectively.
_A chain transmission device 22 is provided together with the rail 21 on the outer surface facing _b1 and _3b2 . The chain drive is provided between the driving sprocket 24 and the beam driven sprocket 25 provided at the front end of the rotating driving of the rear base 8 _b in the installed power 23 of the beam 8, Zhang endless chain 26 It is provided, and a part of the chain 26 is attached to the leg portion 13 ″ of the tube pushing plate 13 straddling the beam 8.

As shown in FIGS. 5 (a), (b) and (c), the tube pushing plates 13, 13 provided on both the beams 8, 8 are provided with wheels 27 for engaging the rails 21 on their legs 13 ″. By the forward and reverse rotation of the power 23 transmitted to the chain 26, the power 23 is moved forward and backward on the beam 8 along the rail 21. In the illustrated example, the power 23 is a servo motor. , A pair of tube push plates 13,13 moving along both beams 8,8 translates back and forth in precise synchronization,
It can also be moved separately on the left and right. The former is used to push the steel pipe on the inclined beam 8 forward with the backward movement of the gantry, and the latter is used when the steel pipe is placed on the horizontal beam 8 with a crane or the like so that it crosses the beam. It is used when correcting at right angles to.

Further, the power 23 is synchronized with the power (not shown) for driving the rubber crawler 1 of the drive wheel 2, and when the drive wheel 2 is moved backward, the tube pushing plate 13 automatically advances to move the tube 4
Is designed to be pushed forward.

The tube pressing surface 13 'of the tube pressing plate 13 is formed in a V shape so as to contact the steel tube at two points. This is because the contact resistance with the steel pipe 4 is large and the beam 8 is not rotated at all.
This is because the roller 12 can be slid on.

In addition, the pipe pressing surface 13 'of the pipe pressing plate 13 has a beam material.
3 _b1, 3 _b2 same MC nylon pad as stuck to the nail 5 _a of the upper surface and the tip stopper and has been stuck, so that the pressure or impact exerted on the tube pressing surface can be effectively absorbed It has become.

[Effect of device]

As explained above, in the pipe stacking mount of the present invention, the steel pipes loaded on the mount can be stacked at a predetermined stacking position without any rotation. Therefore, if the welded parts of the steel pipes are aligned at the 12 o'clock position when the gantry is loaded, they will be stacked at the specified loading position as they are, and the contact between the welded parts of adjacent steel pipes will be avoided. Beam cracking and defect defects are prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a steel pipe conveying and stacking device to which a pipe stacking mount according to the present invention is attached, and FIGS. 2 (a) and (b) are a plan view and a side view of the pipe stacking mount according to the present invention. , Fig. 3 (a)
(B) and (c) are enlarged plan views, side views, and sectional views taken along the line AA of the descending guide slope of the pipe stacking mount according to the present invention, and FIG. 4 (a) (b) (c) Is an enlarged plan view, side view and sectional view taken along the line BB of FIG. 5 of the beam stacking mount according to the present invention, and FIGS. 5 (a), (b) and (c) are the pipe stacking according to the present invention. FIG. 6 is an enlarged plan view of a pipe pushing plate of a mounting base, a cross-sectional view, and a sectional view taken along the line CC, and FIG. 6 is a side view of a conventional steel pipe conveying and stacking device equipped with a pipe stacking mount. 3: Pipe loading platform, 4: Steel pipe, 4 ': Welded part, 5: Tip stopper, 8: Beam, 10: Down guide slope, 11: Impingement wall, 12: Roller, 13: Pipe pushing plate, 13' : Tube pressing surface.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Takehisa Sotoyama, No. 1 Hikari, Kamisu-cho, Kashima-gun, Kashima-gun, Ibaraki Kazumi Branch, Sumitomo Metals Ltd. Fukuyama Forging Machinery Co., Ltd. (72) Inventor Noboru Nishizaka 28-1 Nakanohonmachi, Shijo-nawate, Osaka Prefecture Kinki Ishico Co., Ltd. (56) Reference JP-A-59-194997 60-107035 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A pipe stacking mount (3) for a steel pipe transport stacking device, comprising a rubber crawler type drive vehicle (2) movable in the front-rear direction, and a pipe stacking mount (3) being connected to the same. A rear impact wall (11) and a pair of parallel beams configured such that the pipe is juxtaposed on the upper surface and the front end is rotatably pivoted near the front end of the gantry so that the rear part can be lifted upward by a hydraulic cylinder ( 8)
And a releasable tip stopper (5) for stopping the fall of the tube at the tip of the gantry, and a descending guide slope (10) for the tube projecting from the tip of the gantry, and the pair of beams (8) A plurality of rollers (12) that rotate only in the forward direction of the gantry are arranged in series on the upper surface of the descending guide slope (10), and one set of beams (8) extends from the rear to the vicinity of the front end of the beam. A pipe stacking mount for a steel pipe carrier stacking device, comprising a reciprocable pipe pushing plate (13). 2. A pipe pressing surface (13 ') of a pipe pressing plate (13).
Is formed in a V shape so as to be in contact with the pipe (4) at two points, The mount for pipe stacking of the steel pipe transport and stacking apparatus according to claim 1, wherein