JPS5920973Y2 - culvert mold - Google Patents

Description

[Detailed explanation of the invention] The culvert mold of this invention has a simple mechanism and quick operation because the bottom plate can be raised and lowered and the side plates of the main body can be moved left and right continuously only by the linear movement of the inner frame attaching/detaching device. In addition, the contact surfaces of the main body, bottom plate, and outer frame window holes are in close contact with each other, and concrete to be poured does not leak out. In other words, the box-shaped outer frame A has window holes 3.4 in the side plates 1 and 2, and the outer peripheral shape In the culvert mold, the inner frame B is formed on the main body 5 and the bottom plate 6, and the lower inner surface 9°10 of the side plates 7 and 8 of the main body 5 coincides with the window hole 3°4. is formed into an upward slope, both side edges 11.12 of the bottom plate 6 are formed into an upward slope, the bottom plate 6 is connected to the lifting device 13, and the vertical elongated hole 14.15 integrated with the bottom plate 6 is inserted into the main body 5. A pin 16' of a series of rods 16 and 17 is pivoted on the side plates 7 and 8.

17' are respectively inserted.

Next, to explain how to use it, rectangular window holes 3 and 4 are formed in the side panels 1.about.2 of the outer frame A, respectively.

When compressed air is fed into the cylinder of the elevating device 13 consisting of a cylinder and a piston, for example, in the inner frame B, the piston rises and pulls up the bottom plate 6, resulting in the state shown in FIG.

Further, when the bottom plate 6 is pulled up, the vertical slot 1 integrated with it
The lower ends of 4.15 are connected to the pins 16' and 17 of 16.17.
When the pins 16' and 17' are engaged and pulled up further, the connecting rods 16 and 17 are pulled up as shown in Fig. 3.
is inclined to draw the side plates 7 and 8 of the main body 5, and is inclined inward against the rigidity of the side plates 7 and 8.

The support frame 18 in the inner frame B is supported by a forklift and moved forward, inserted into the window hole 3 of the outer frame A, and further advanced and inserted into the window hole 4.

Note that the work can be easily performed by providing the trochanter 20 at a position in front of the window hole 3 and moving it forward while supporting the bottom plate 6.

Next, when compressed air is introduced into the cylinder of the lifting device 13, the piston descends and passes through the vertical slot 14 through the bottom plate 6.
15 is lowered, and the tensile force on the connecting rods 16 and 17 is removed, so that the side plates 7 and 8 move outward by their own rigidity and return to their positions.

When the piston further descends, the bottom plate 6 also descends, and both side edges 1
When the upward slope of 2.13 contacts the upward slope of the inner surface of the lower part of the side plates 7 and 8 and further descends, the vertical force is applied to the side plates 7 and 8.
, the side plates 7.8 are pressed against both edges of the window holes 3, 4, the bottom plate 6 is pressed against the lower edge, and as a result the ceiling plate is pressed against the upper edge, and the inner frame B and window The holes 3, 4, the bottom plate 6, and the side plates 7, 8 are in close contact with each other, and there are no gaps, so that the poured concrete does not leak.

Once the concrete has hardened, the lifting device 13 is raised, the bottom plate 6 is raised, and the side plates 7 and 8 are tilted inward, and after supporting the support frame 18 with a forklift, it is moved back and the inner frame B is taken out.

Next, the side plates 1 and 2 and the front plate 19 constituting the outer frame A are opened and the product is taken out from the outer frame A.

Incidentally, the lifting device N13 can use a male screw and a nut, and if hydraulic pressure is used instead of compressed air, a large force can be applied to the bottom plate and side plates, and the leakage prevention effect is even greater.

The culvert mold of this invention continuously raises and lowers the bottom plate and moves the side plates from side to side only by vertically linearly moving the inner frame attaching/detaching device, so the mechanism is simple and the operation is quick.

Since the lower inner surface of the side plate is formed into an upward slope, and both edges of the bottom plate are formed into upward slopes so that the side slopes touch, the side plate is pushed outward as the bottom plate descends, and the bottom plate The ceiling and side panels are strongly pressed against the edge of the window hole to prevent the poured concrete from leaking out.

[Brief explanation of the drawing]

Figure 1 is a slope view of the inner frame of the mold of this invention, Figure 2 is a slope view with the bottom plate pulled up, Figure 3 is a slope view with the bottom plate pulled up further, and Figure 4 is a slope view of the inner frame of the mold with the outer frame. FIG. 5 is a partially cutaway front view of the device attached to the device, and FIG. 5 is a side view of the same. 1.2: Side plate, 3, 4: Window hole, 5: Main body, 6: Bottom plate, 7
, 8: Side plate, 9.10: Lower inner surface, 11.12: Both side edges, 13: Lifting device, 14, 15: Vertical slot, 16°1
7: Continuous rod, 16', 17': Pin.

Claims (1)

[Scope of utility model registration request] In a culvert mold consisting of a box-shaped outer frame A having window holes 3 and 4 in the side plates 1 and 2, and a horizontal cylindrical inner frame B whose outer circumferential shape matches the window holes 3 and 4, the inner frame B is the main body 5. In addition, the lower inner surfaces 9 and 10 of the side plates 7° 8 of the main body 5 are formed as upward slopes, and both side edges 11 and 12 of the bottom plate 6 are formed as upward slopes. A culvert mold in which pins 16' and 17' of continuous rods 16.degree.