JP2769275B2 - Removal equipment for concrete sleepers with Thai shoulder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for releasing a concrete sleeper from a form in a post-tension type concrete sleeper manufacturing line.

[0002]

Concrete sleepers BACKGROUND ART post-tensioning system, generally using a mold pallet formed integrally by arranging 4-6 present about the sleepers, the mold pallet is cyclically with sleepers production line, mold cleaning, It is manufactured by repeating the process of release material application, installation of sleeper internal equipment, concrete placement, high temperature curing, introduction of prestress, demolding, and removal of sleepers. Concrete sleepers are manufactured in a formwork that is tapered on the sides, with the tops of the sleepers facing downward, and after curing, are drawn upwards.

[0003] A tie shoulder protrudes from the upper surface of the sleeper as hardware for fixing the rail. FIG.
FIG. 6 (a) is a partial cross-sectional side view (the upper surface of the sleeper is facing downward), FIG. 6 (b) is an end view, and FIG. 6 (c) is a post-tension concrete sleeper 100. It is a top view. A post-tensioned PC steel material 102 is embedded in the concrete 101. PC steel 10
2 has a button head formed at one end and is fixed, and the other end is fixed in a fixing hole 105 by a fixing plate 103 and a nut 104. A tie shoulder 107 protrudes from the upper surface 106 of the sleeper. This Thai shoulder 107
It is attached by projecting downward from a square hole opened in the bottom plate of the concrete formwork. Rectangular hole in the mold This is to prevent the paste leakage is shaped so as not to cause a gap between the tie shoulder 107. Therefore, when removing the concrete sleeper 100, the tie shoulder 107 competes with the square hole of the formwork, and it is not easy to remove the concrete sleeper.

[0004]

The concrete sleeper is released from the mold by engaging a pulling arm in a fixing hole at each end of the sleeper and raising the pulling arm. When competing with the bottom plate hole of the frame, the worker is hitting the formwork or prying the concrete with a gold lever or the like. As a result, there are problems such as the occurrence of defects in the concrete, deformation of the tie shoulder holes of the formwork, and the need for repair.

SUMMARY OF THE INVENTION The present invention has been developed to provide a smooth demolding device which solves the above-mentioned problems, and provides the device.

[0006]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for removing a concrete sleeper from a formwork in a concrete sleeper manufacturing line, the apparatus including a stopper and a pusher for stopping and positioning a concrete sleeper formwork. A concrete sleeper demolding device comprising: a locking member for restraining the form from rising when pushed up; and a shifter for pushing up a tie shoulder of the sleeper.

[0007]

When the concrete is removed from the concrete sleeper formwork, it is difficult to lift the concrete sleeper with the conventional concrete sleeper removing device that grasps both ends of the sleeper and pulls out the upward. Prior to the removal of the concrete sleeper, the apparatus of the present invention opens the competition between the tie shoulder and the formwork by pushing up the tie shoulder from below with a shifter in advance, and separates the formwork and concrete. It is. Since the shifter pushes the tie shoulder straight up from vertically below to vertically above, it is easy to push up and does not damage the formwork.

It is preferable to use a strong shifter which is a pneumatic soft operation. In addition, the shifter is provided with a stopper and a pusher for accurately regulating the position of the sleeper formwork so that the head of the tie shoulder can be accurately pushed up. In addition, a locking member is provided for preventing the entire form from being lifted by the lifting force of the shifter. The operations of the stopper, pusher, and shifter are automatically controlled by a sequence controller.

[0009]

An embodiment will be described below with reference to the drawings. FIG.
Side view of the demolding apparatus Pando rolled concrete sleepers embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is a positive plane view,
FIG. 4 is a side view of the positioning device. A concrete sleeper 2 is cast in the concrete sleeper formwork 1 and is removed from the mold. The concrete form 1 of the embodiment is a frame 3
The pallet 4 is formed by placing the formwork of the five sleepers 2 thereon. The pallet 4 runs on the rollers 22. The roller 22 is supported on a roller stand 21 erected on the gantry 20. The removal device of the embodiment includes a shifter 10, a pallet locking member 30, and a pallet positioning device 40 on a gantry 20.

The pallet 4 traveling on the rollers 22
As shown in FIG. 4, the stopper 4 of the positioning device 40
1 regulates the front end of the pallet 4 in the traveling direction by the operation of the cylinder 42, and the pusher 43
, The rear end of the frame 3 of the pallet 4 is pushed to position the pallet. Further, as shown in FIG. 3, the locking member 30 is locked to the flange of the frame 3 to prevent the frame 3 from rising. The locking member 30 is shown in FIG.
As shown in the figure, the bottom plate 31 is composed of a bottom plate 31 and a locking claw 32.
The flange of the frame 3 of the pallet 4 enters the space 33 below. In this state, the shifter 10 provided on the gantry 20 pushes up the tie shoulder 107 of the sleeper 2 from below. FIG. 1 shows this state, and the shifter 10a
Indicates a state before being pushed up, and 10b indicates a state where it is pushed up. The shifter 10 has a bellows-like extending / contracting driving unit 11 such as an air spring, and supplies compressed air to the driving unit 11 to push up the rod 12. Push-up rod 12
Abuts the Thai shoulder of the sleeper 2 and pushes it vertically from below. Therefore, the sleeper can be easily removed from the mold. As shown in FIG. 7, the push-up rod has a height adjusting member 13 attached to the upper end thereof, so that the push-up amount of the tie shoulder can be adjusted optimally.

The positioning of the pallet 4, the lifting of the shifter 10, the lowering of the shifter 10, and the pushing of the pallet 4 are sequence-controlled, and are incorporated in the control system of the overall sleeper manufacturing process. The positioning of the pallet 4 and the operation of the shifter 10 are driven by compressed air. For this reason,
An air compressor, an operation valve, piping and the like are provided integrally.

8 to 11 show perspective views of the embodiment. FIG. 8 is a front view showing a state immediately before the pallet 4 enters the embodiment apparatus. Shifter 10 on platform 20, row La 22, engaging material 30, along with showing the relationship between the position of such stopper 41, driving air tank 50, an air control device 51, a state in which the air pipe 52 is compactly shown ing. Figure 9 is a perspective view of the FIG. 8 from the back side, the pusher 4 3 is shown. Figure 10 is a perspective view of the pallet 4 is Tsu mounting on the example apparatus, the pallet 4 is positioned by the stopper 41, the lid 5 of the side surfaces of the sleepers formwork is opened, exposing the end faces of the concrete sleepers 2 The shifter 10 has just pushed up the tie shoulder of the concrete sleeper. FIG. 11 shows this state, in which the shifter pushes up the tie shoulder, cracks 7 are generated on the upper surface side of the formwork of the concrete sleeper 2, and the sleeper is detached from the formwork . .

[0013]

When the conventional bread roll type concrete sleeper is removed from the formwork, since the tie shoulder is inserted into the hole of the formwork bottom plate, excessive force is applied to damage the concrete or the mold. Although the frame was deformed and there was a problem in quality control , according to the present invention, this could be solved. Therefore, wasteful labor is not required, and it is possible to prevent damage to concrete and the formwork, work is streamlined, and the life of the formwork is extended.

[Brief description of the drawings]

FIG. 1 is a side view of a concrete sleeper removing device of an embodiment.

FIG. 2 is a plan view of the concrete sleeper removing device of the embodiment.

FIG. 3 is a front view of the concrete sleeper removing device of the embodiment.

FIG. 4 is a side view of the positioning device of the embodiment.

5A is a plan view and FIG. 5B is a side view of the locking member of the embodiment.

6A is a side view, FIG. 6B is a front view, and FIG.

FIG. 7A is a side view of the rod of the shifter according to the embodiment,
(B) It is a top view.

FIG. 8 is a front bird's-eye view of the concrete sleeper removing device of the embodiment.

FIG. 9 is a rear perspective view of the concrete sleeper removing device of the embodiment.

FIG. 10 is a perspective view of a concrete sleeper removing device according to the embodiment.

FIG. 11 is a side perspective view of a sleeper formwork.

[Explanation of symbols]

1 sleeper mold 2 sleepers 3 frame 4 pallet 5 cover 6 holes 7 crack 10 shifter 11 driver 12 rod 20 gantry 21 roller stand 22 b over La 30 engaging material 31 bottom plate 32 pawl 33 space 40 the positioning device 41 a stopper 42 Air cylinder 43 Pusher 100 Sleeper 101 Concrete 102 PC steel 103 Fixing plate 104 Nut 105 Fixing hole 106 Upper surface 107 Tie shoulder

Claims (1)

(57) [Claims] An apparatus for removing a concrete sleeper from a formwork in a concrete sleeper manufacturing line, comprising: a stop positioner for a formwork of a concrete sleeper; a locking member for stopping the rise of the formwork; and a tie shoulder for a sleeper. A concrete sleeper with a Thai shoulder, characterized by having a shifter for pushing up.