JPH0375324B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a demolding machine for manufacturing sleepers, which is used when manufacturing sleepers made of prestressed concrete.

(Conventional technology) The functions required when demolding prestressed concrete sleepers are that a large number of sleepers can be demolded at one time to improve efficiency, and that the sleeper fixing hardware be horizontal to the product. A device was needed to allow the finished concrete surface (top) to rotate 180 degrees and emerge from the bottom after being removed from the mold.

In order to satisfy these conditions, conventional demolding machines of this type have inverted L-shaped hanging frames 1 and 2 arranged on the left and right at intervals, as shown in FIG. , 2 near the ends of the opposing parts, and the sleeper A of the product is fixed at the lower end of the hanging frames 1 and 2, and the two sleepers can be demolded at the same time. It was hot.

(Problems to be Solved by the Invention) However, with the conventional demolding machine, the number of products that can be demolded at the same time is limited to two, and when lifting sleeper A, which is a product, the product is lifted from the lower end where sleeper A is fixed. A component force B is applied, and since this component force B is not in a horizontal direction but in an oblique direction, an unreasonable force is applied. In addition, when rotating the product so that the finished concrete surface (top end) of the demolding machine is rotated 180 degrees to expose the bottom surface, gravity is used to rotate the sleeper A by eccentrically fixing it, and the presser metal fitting 4 is removed. It was dangerous because it rotated in an instant. Furthermore, since the presser fitting 4 was located directly above the sleeper A, there was a risk of damaging the concrete.

This invention was developed in view of the above circumstances, and allows four products to be demolded at the same time, and allows products to be rotated smoothly without applying excessive force or causing any danger during lifting. The purpose is to provide a model machine.

(Means for Solving the Problems) In order to achieve the above object, in the present invention, an upper hanging frame and a lower hanging frame are arranged vertically with a linear way interposed therebetween so as to be slidable in the left and right direction. , Four sleeper fixing hardware are attached to the upper hanging frame and the lower hanging frame, respectively, facing each other, and gears are attached to the sleeper fixing hardware, and the gears mesh with each other.
Each sleeper fixing hardware is formed to rotate in conjunction with each other.

(Example) The following will explain based on the illustrated example. Reference numeral 5 indicates an upper hanging frame, and this upper hanging frame 5 is formed into a frame shape by arranging three hanging frame members 6 horizontally in the longitudinal direction at regular intervals, and the hanging frame members 6 have one end. It hangs down, and the front is formed into an inverted L shape. Reference numeral 7 indicates a lower hanging frame, and the lower hanging frame 7 is formed into a frame shape by arranging four hanging frame members 8 horizontally at regular intervals in the longitudinal direction, and the hanging frame members 8 have one end hanging down. death,
The front side is formed into an inverted L-shape, and the hanging portion 8a thereof is provided in the direction opposite to the hanging portion 6a of the hanging frame member 6. The lower hanging frame 7 is the upper hanging frame 5.
It is located at the bottom of the .

A linear way 9 is interposed between the hanging frame 5 and the lower hanging frame 7. This linear way 9 is provided with concave metal fittings 10 protruding outwardly attached to the left and right ends of the two hanging frame members 6, 6 disposed on the outside in the longitudinal direction of the upper hanging frame, respectively. There are a total of four locations. Each concave hardware 10
A small piece 11 having a groove 11a extending in the longitudinal direction is fixed to the bottom of the holder. On the other hand, a flat plate 12 is fixed to the left and right ends of the lower hanging frame 7, spanning between the hanging frame members 8, and the groove 11a of the small piece 11 is slidably fitted into the upper surface of the flat plate 12. It consists of a structure in which a rail 13 is attached. In order to prevent this linear way 9 portion from sliding,
A stopper 14 is provided on the upper hanging frame member 6 and projects downward, and the stopper 14 is formed so that a stopper pin can be inserted into a small piece provided with a stopper pin hole. As described above, the lower hanging frame 7 is arranged to be superimposed on the lower part of the upper hanging frame 5 via the linear way 9 so as to be slidable in the left and right directions.

In the horizontal part of the hanging frame member 6 in the upper hanging frame 5, a hanging part 15 is provided to protrude upward at one end near the hanging part 6a, and the horizontal part of the hanging frame member 8 in the lower hanging frame 7 A hanging portion 16 is provided on one end of the portion near the hanging portion 8a to protrude upward.
These hanging parts 15 and 16 are flat plates with hanging holes, and a hanging wire 17 is provided between the hanging parts 15 and 16.
is installed.

Hanging frame bearing wheels 18 are attached to the horizontal portion tip and the end of the hanging frame member 8 of the lower hanging frame 7 facing downward, respectively. It is formed so that it runs along the top surface of the formwork when moving.

Hanging pieces 8a of each hanging frame member 8 in the lower hanging frame 7
A spur gear 19 is attached to each lower end. That is, a support plate 20 for gear attachment is fixed in the width direction across the lower end surface of the hanging piece 8a of each suspension frame member 8, and a support plate 20 for gear attachment is fixed to the lower part of each suspension frame member 8. Four spur gears 19 are arranged in a row on the outer surface so as to be freely rotatable, and the spur gears 19 mesh with each other. A shaft 21 is attached to each of these spur gears 19, and this shaft 21 rotatably passes through the support plate 20 portion via a pillow block 22, and a sleeper fixing metal fitting 23 is attached to the inner tip of the shaft 21. Four sleeper fixing hardware 23 are provided at regular intervals, and engagement protrusions 23b protruding inward from the surface of the flat plate 23a so as to engage with the recessed end face of the sleeper A during lifting.

Further, a handle 24 for operation is attached to the hanging piece 8a portion of the intermediate suspension frame member 8, and a gear 2 attached to the shaft 24a of this handle 24 is attached.
4b meshes with the spur gears 19, and each spur gear 19 is configured to rotate by rotating the handle 24.

Hanging pieces 6a of each hanging frame member 6 in the hanging frame 5
A sleeper fixing metal fitting 25 is attached to the lower end of the frame 7 at a position opposite to each sleeper fixing metal fitting 23 attached to the lower hanging frame 7. That is, a support plate 26 for attaching sleeper fixing hardware is fixed across the lower ends of the hanging pieces 6a of each hanging frame member 6. A shaft 27 is rotatably penetrated through this support plate 26 via a pillow block 22.
A sleeper fixing hardware 25 is attached to the inner tip of the sleeper A, and these sleeper fixing hardware 25 are provided at four locations facing each of the sleeper fixing hardware 23, and are engaged with the recesses in the end face of the sleeper A during lifting. Engagement protrusions 25b facing inward are provided on the surface of the flat plate 25a so as to fit together.

In use, when the suspension wire 17 is lifted, a component force C (Fig. 1) is applied, but at this time, the linear way 9 slides and at the same time
8 runs on the formwork surface of sleeper A, so the left and right upper hanging frames 5
The lower hanging frame 7 moves horizontally smoothly and engages the concave portion of the end face of the sleeper A at each of the sleeper fixing hardware 23 and 25, and the left and right end face portions of the sleeper A are held between the sleeper fixing hardware 23 and 25. lifted in condition. After demolding, the four spur gears 19 are rotated simultaneously by rotating the operating handle 22, thereby simultaneously rotating the four sleepers A fixed to the sleeper fixing hardware 23 and 25 by 180 degrees. do.

(Effects of the Invention) This invention having the above configuration has the following effects.

(1) Since a linear way is interposed between the upper and lower suspension frames arranged on the left and right, the component of force during lifting is in the horizontal direction, so there is no strain on the joints with the sleepers. No force is applied.

(2) Four sleepers can be demolded at the same time, and simultaneous rotation of the sleepers is smooth due to the interlocking of spur gears. And since the center of gravity of the sleepers is fixed, there is no danger of them rotating instantly.

(3) Since the center of gravity of the sleeper is fixed, there is no need for a clamp to prevent rotation, and therefore there is no risk of damage to the sleeper.

(4) When the upper and lower hanging frames move horizontally, the hanging frame bearing wheels run on the formwork, resulting in a high level of accuracy.

[Brief explanation of drawings]

Fig. 1 is a front view, Fig. 2 is a plan view, Fig. 3 is a right side view, Fig. 4 is a partially enlarged front view showing the linear way portion, Fig. 5 is a sectional view taken along line A-A, and Fig. FIG. 6 is a front view of the conventional example, and FIG. 7 is a partial sectional view thereof. 1, 2... Hanging frame, 3... Wire, 4... Presser fitting, 5... The above hanging frame, 6... Hanging frame member, 7...
Lower hanging frame, 8... Hanging frame member, 9... Linear way, 10... Concave hardware, 11... Small piece, 12...
Flat plate, 13...Rail, 14...Stopper, 1
5, 16... Hanging part, 17... Hanging wire, 18
... Hanging frame bearing wheel, 19 ... Spur gear, 20 ... Support plate, 21 ... Shaft, 22 ... Pillow block, 23 ... Sleeper fixing hardware, 24 ... Handle,
25...Sleeper fixing hardware, 26...Support plate, 27...
...shaft.

Claims (1)

[Claims] 1. An upper suspension frame and a lower suspension frame are arranged vertically with a linear way interposed between them so as to be able to slide freely in the left and right direction, and each of the upper suspension frame and lower suspension frame has four sleeper fixing hardware facing each other. A demolding machine for manufacturing sleepers, characterized in that gears are attached to the sleeper fixing hardware, and the gears mesh with each other so that each sleeper fixing hardware rotates in conjunction with each other.