JP4226001B2 - Concrete product reversing device and reversing method - Google Patents

Description

  The present invention relates to a reversing apparatus and a reversing method for reversing a concrete product such as a concrete segment by 180 °.

  For example, a curved arc-shaped concrete segment is manufactured by a formwork in an upwardly convex flat state, and after demolding, it is inverted 180 ° for inspection and stock yard flats, It is necessary to put it in a dish-mounted state.

  In the past, the concrete segment was lifted by the lifting wire used for demolding, and the suspended concrete segment was flipped 180 ° by human power. Therefore, there is a problem that the corner portion of the concrete is lost, and an apparatus for automatically inverting the concrete product is desired.

  Moreover, there exist patent documents 1-5 as a prior art document relevant to this invention. The inventions of Patent Literatures 1 and 2 are rotation support tools for concrete products such as U-shaped side grooves, and the tip portions of the rotation support tools are inserted into support holes provided on both side walls of the concrete product and fixed with cams. The pair of left and right rotation supports are suspended by wires.

  The invention of Patent Document 3 is a method for starting up a large concrete product, and a roller / reversing plate capable of rotatably supporting the concrete product is provided in a lower part when the concrete product is started up by a lifting machine such as a wire. A movable reversing jig provided is attached, and a concrete product is started up using this reversing jig as a fulcrum to prevent the lower part of the concrete product from being dragged.

  The inventions of Cited Documents 4 and 5 are concrete product reversing machines, each comprising a support frame and a ring-shaped reversal frame pivotally attached to the support frame. Alternatively, it has a pair of opposed product supports that are movable to expand.

JP 2000-247571 A Japanese Patent Laid-Open No. 11-130374 Japanese Patent Laid-Open No. 11-022198 Japanese Patent Laid-Open No. 10-035841 Japanese Patent No. 09-156754

  In the conventional method of suspending concrete products by suspending them with wires, heavy concrete products must be reversed manually, which is a laborious and dangerous work, and there is a risk of missing corners of concrete. There is. In addition, in the case of the reversing device that automatically reverses the concrete product described above, there is a problem that the device becomes larger and complicated, and costs increase.

  The present invention provides a reversing apparatus and a reversing method for a concrete product, which can safely reversing a concrete product without damaging the concrete, and can be reversed by a low-cost apparatus with a relatively simple structure. It is.

In the invention of claim 1 of the present invention, a concrete product in a horizontal state is erected by an upright machine, the concrete product in an upright state is transferred to an overturning machine, and the horizontal state is overturned by an overturning machine. A reversing device for reversing 180 °, an overturning table formed in an L-shape in side view from the pedestal part and the cradle part is rotated around the rotation axis by a rotation drive device, and the cradle part and the cradle part are respectively horizontal. A pair of overturning machines configured to be in an upright state are installed on the base in such a way that the concrete product placement surface of the upright part of the overturning table faces each other, one of which rises and the other The riser and the cradle part of the faller are formed so as to mesh with each other in a horizontal state, and either the riser or the faller approaches each other. Standing up machine by moving in the direction Of is configured to the placed concrete products on a cradle portion of the horizontal state in contact with the base portion of the upright fall-side, cradle portions mesh with each other in a horizontal state of the standing Okoshi machine It is configured to be higher than the tumble machine, and a packing material is provided on the concrete product placing surface of the stand of the riser and the tumble machine, and the concrete of the stand part of the riser and the tumble machine Some product receiving surfaces are provided with rubber pads.

  For example, as shown in FIG. 1, a concrete product is erected by an upright machine, transferred to a tumble machine, and overturned by a tumble machine to invert the concrete product by 180 °. The overturning table is rotated 90 ° by a rotary drive device such as a hydraulic cylinder, and the pedestal portion is changed from a horizontal state to an upright state. The cradle part that meshes with each other in the horizontal state is set up so that the upright machine is higher than the overturning machine so that the lower surface of the concrete product does not hit the cradle part of the overturning machine that stands by in the upright state. When transferring, for example, the tipping machine is erected with a hydraulic cylinder and a slider device and slid to the machine side, and the back of the concrete product is pressed against the upright stand of the tipping machine, and the concrete product is impacted at the next tipping. Do not give.

The invention according to claim 2 of the present invention uses the reversing device according to claim 1, and the horizontal state of the tipping table of the riser is changed from the horizontal state of the standing unit of the stand and the tipping table of the tipping machine. Place the concrete product on the pedestal part, rotate the tipper of the tumble machine so that the cradle part is horizontal, and rotate the tipper of the stand up machine so that the cradle part is horizontal. The faller and the upright machine are engaged with each other, and then the faller and the upright machine are moved in a direction approaching each other to bring the concrete product into contact with the packing material on the upright stand of the faller , Rotate the machine's overturning stand in the direction where the pedestal part is horizontal, stand up and transfer the concrete product on the machine side onto the receiving part of the overturning machine, further rotate the overturning table of the overturning machine, Concree characterized in that the concrete product is inverted 180 ° with the part horizontal. It is an inversion method of the product.

  Since the present invention is configured as described above, the following effects can be obtained.

  (1) Using a pair of overturning tables installed on the base, the concrete product is raised, transferred, and overturned so that it can be turned 180 °. It can be performed without any danger, can eliminate dangerous work due to heavy work of reversing work, and can provide a sound concrete product.

  (2) Moreover, the concrete product can be reversed by a low-cost apparatus with a relatively simple structure comprising a pair of overturning tables.

  Hereinafter, the present invention will be described based on the illustrated embodiments. 1, 2, and 3 are a side view, a plan view, a left side view, and a right side view showing an embodiment of a reversing device according to the present invention.

  In FIG. 1, the reversing device 1 is composed of a pair of left and right tumble machines provided with a L-shaped tumble table 2 on the base 3 facing each other. The faller B is assumed. As will be described in detail later, the concrete product C such as a concrete segment in a horizontal state is erected by the upright machine A, the concrete product C in an upright state is transferred to the overturning machine B, and the horizontal state is obtained by the overturning machine B. Inverts the concrete product 180 degrees.

  The structures of the upright machine A and the overturn machine B are the same except for the lower part, and are arranged symmetrically. The raising machine A is composed of a turntable 2, a rotating shaft 4, a hydraulic cylinder 5 as a rotation drive device, a support frame 6, a support column 7, and the like. In addition to the overturning base 2, the rotating shaft 4, the hydraulic cylinder 5, the support base 6, and the column 7, the overturning machine B is in the direction of approaching and moving away from the upright machine B (base longitudinal direction, overturning) A moving device 8 is provided.

  As shown in FIG. 1, the tipping table 2 having an L shape in side view is composed of a long mounting portion 2a and a short receiving portion 2b. As shown in FIGS. It is comprised from a member, arrange | positions by a pair in the perpendicular direction (base width direction) of a fall, and is comprised by connecting this pair of arm member with the rotating shaft 4 of the cross-sectional square shape parallel to a base width direction. Further, as shown by a two-dot chain line in FIG. 2, the arm member of the overturning table 2 is arranged slightly shifted in the base width direction between the upright machine A and the overturn machine B, and The horizontal cradle portions 2b and 2b of the machine B can be engaged with each other with a gap therebetween.

  As shown in FIGS. 1 and 2, the rotating shaft 4 is fixed to the lower surface of the mounting portion 2 a, and both ends thereof are supported by bearings 10 on the support frame 6 so as to be rotatable. In addition, the piston rod tip of the hydraulic cylinder 5 is connected to the inner side of both ends of the rotating shaft 4 via an operating lever 11, and the cylinder body is mounted on the base 3 via a mounting plate 12. Due to the contraction / extension, the pedestal portion 2a is rotated by 90 ° from the horizontal state so that the pedestal portion 2a is in an upright state.

  As shown in FIG. 1, the cradle parts 2b and 2b meshing with each other in the upright state of the pedestal part 2a wrap by a predetermined length, but the cradle part 2b of the standing machine A is set higher by about 10 mm. Thus, the lower surface of the raised concrete product is prevented from hitting the receiving part 2b of the overturning machine B. Further, the overturning machine B is moved in the longitudinal direction of the base by the moving device 8, and the interval between the upright receiving base portions 2b and 2b is narrowed.

  Moreover, as shown in FIG. 1, the packing material 13 is attached to the concrete product mounting surface of the mounting part 2a, and the rubber pad 14 is stuck to the concrete product receiving surface of the receiving part 2. Furthermore, the pedestal portion 2a is also a receiving surface for receiving the side surface of the concrete product when it stands up vertically, and the packing material 13 is attached to be able to tilt in the horizontal direction around the vertical axis so as to correspond to various curvatures of the concrete segment. (See FIG. 2).

  A connecting member 15 is fixed to the lower surface of the pedestal portion 2a in parallel with the rotary shaft 4, and is positioned by a support column 7 having a height adjusting device, so that the horizontal state of the pedestal portion 2a is maintained. Further, the horizontal cradle part 2b is also positioned by the support column 7, and the horizontal state is maintained. (See FIG. 1).

  As shown in FIGS. 1 to 3, the moving device 8 includes a slider device 20 and a hydraulic cylinder 21. The slider device 20 is rotatably mounted on the base 3 via a mounting plate 23 and a slide beam 22 made of back-to-back angle members provided in parallel to the base longitudinal direction on both sides in the base width direction at the lower part of the overturning machine B. The wheel 24 is configured to roll between the upper and lower flanges of the slide beam 22. The hydraulic cylinder 21 is disposed at the center portion directly above the base 3, the piston rod tip is connected to the lower part of the overturning machine B, and the cylinder body is raised and connected to the machine A. By extending and contracting the hydraulic cylinder 21, the overturning machine A slides in the base longitudinal direction with the stationary wheel 24 as a guide.

  Note that a hydraulic device, a start switch box, a hydraulic pressure adjusting machine, and the like are installed below the stationary-side standing machine A.

  Using the reversing device configured as described above, the concrete segment is reversed 180 ° in the following procedure (see FIG. 1).

  (1) The stand-up machine A and the overturning machine B stand by in a state where the respective stand portions 2a and 2a are horizontal and separated from each other. The demolded segment C is erected in a demolded posture, that is, in a state of being convex upward, and set on the horizontal table portion 2a of the machine A. Here, if the segment reversed to the overturning machine B is not removed, the upright machine A is prevented from starting by the interlock of the sensor and the control circuit.

  (2) Start up the machine A, rotate the overturning table 2 to the overturning machine B side, and also start up the overturning machine B, raise the overturning table 2 and rotate it to the side of the machine A. Here, since the standing machine A has the segment C, the tipping machine B stands upright before the standing machine A and stands up and waits for the machine A. The upright machine A and the overturning machine B may be started at the same time, the upright machine A may be stopped immediately before standing upright, and the receiving portion 2b of the upright falling machine B may be slid into the lower part of the segment.

  (3) The stand part 2b of the stand-up machine A on which the segment is placed in a state where both the stand-up machine A and the turnover machine B are completely upright is about 10 mm higher than the base part 2b of the turn-up machine B. And the lower surface of the segment does not hit the cradle part 2b of the overturning machine B. From this state, the overturning machine B is erected by the moving device 8 and is slid in a direction approaching the machine A, and the convex rear surface of the segment is brought into contact with the packing material 13 of the upright table portion 2a of the overturning machine B.

  (4) The cradle part 2b of the standing machine A is slightly inclined with a downward slope, the cradle part 2b of the overturning machine B is raised, and the segment is transferred onto the cradle part 2b.

  (5) When the turntable 2 of the overturning machine B that has received the segment is further rotated and the receiving portion 2b returns to the horizontal state, the reversal of the segment by 180 ° is completed. The segment in a convexly stacked state is carried out on the receiving part 2b. The tipping table 2 of the standing machine A is also rotated to return to the initial state.

It is a side view which shows one Embodiment of the inversion apparatus of the concrete product which concerns on this invention. It is a top view of the inversion apparatus of FIG. 1A is a left side view and FIG. 1B is a right side view of the reversing device of FIG.

Explanation of symbols

A …… Stand-up machine B …… Tumbler C …… Concrete segment (concrete product)
DESCRIPTION OF SYMBOLS 1 ... Inversion device 2 ... Inversion table 2a ... Placement part 2b ... Receiving part 3 ... Base 4 ... Rotating shaft 5 ... Hydraulic cylinder (rotation drive device)
6 …… Supporting stand 7 …… Still 8 …… Moving device 10 …… Bearing 11 …… Operating lever 12 …… Mounting plate 13 …… Packing material 14 …… Rubber pad 15 …… Connecting member 20 …… Slider device 21 …… Hydraulic cylinder

22 …… Slide beam 23 …… Mounting plate 24 …… Wheel

Claims (2)

It is a reversing device that raises a concrete product in a horizontal state with a standing machine, transfers the concrete product in an upright state to a tumble machine, falls down in a horizontal state with a tumble machine, and inverts the concrete product by 180 °. An overturning table formed in an L shape from the side and the pedestal portion is rotated about a rotation axis by a rotation driving device, and the pedestal portion and the pedestal portion are configured to be in a horizontal state and an upright state, respectively. A pair of overturning machines are installed on the base so that the concrete product placement surface of the table in the upright state of the overturning table faces each other, one of which stands up and the other as the overturning machine. The upright machine is formed so that the cradle part of the machine and the overturning machine mesh with each other in a horizontal state, and either the upright machine or the overturning machine moves in a direction approaching each other. On the horizontal cradle part It is configured to abut the placed concrete products table portion of the upright fall-side, as towards the cradle portion standing Okoshi machine which mesh with each other in a horizontal state is higher than the fall machine The packing material is provided on the concrete product placement surface of the stand part of the riser and the tumble machine, and the rubber product pad is provided on the concrete product receiving surface of the stand part of the riser and the tumble machine. A concrete product reversing device characterized by comprising:   Using the reversing device according to claim 1, the concrete product is placed on the standing table portion of the rising stand of the rising machine and the falling table of the tipping machine from the horizontal state on the standing table portion of the rising table of the rising machine. Rotate the tipping table of the tumble machine so that the receiving part is horizontal, rotate the tipping machine of the standing machine so that the receiving part is horizontal, and Next, move the tipping machine and the standing machine in the direction approaching each other to bring the concrete product into contact with the packing material of the stand base part of the tipping machine. The concrete product on the upright side is transferred onto the cradle part of the tumble machine, and the tumble table of the tumble machine is further rotated so that the pedestal part is in a horizontal state and the concrete product is rotated 180 degrees. ° Concrete product inversion method characterized by inversion.

Images