JP4494657B2 - Implanting member fixing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fixing device for fixing an embedded member to a concrete formwork.
[0002]
[Prior art]
Opening and closing type, where the embedded part that is embedded in the concrete product is inside the mold and the exposed part of the embedded member that is supported by the mold so that the exposed part goes out of the mold is attached to the mold and pressed by a spring When the holding member is clamped by the clamping means, the embedded member is fixed to the mold frame, and when the opening and closing type fixing means is opened by the opening means supported by the mold frame and the clamping part is separated from the exposed part, the embedded member is A fixing device for an embedding member that can be detached from a mold is known from Japanese Patent Application Laid-Open No. 7-236331.
[0003]
However, this device is a coil spring in which a spring for elastically pressing the fixing member of the embedded member is provided between the pair of fixing members to draw both the fixing portions. For this reason, when molding concrete products, noro leaking from the gap between the exposed part of the embedded member and the hole in the formwork will lose the spring function when it is applied to the spring and hardened. In addition, there is a problem that it is difficult to accurately and stably mount the embedded member because the holding of the exposed portion by the right and left fixing members is unbalanced by pulling by the spring.
[0004]
[Problems to be solved by the invention]
In view of the above problems, the present invention does not adhere to the spring even if the slot leaks from the gap between the exposed portion of the embedded member and the hole of the mold, and the holding of the exposed portion by the right and left fixing members is balanced. Therefore, it is an object of the present invention to provide an embedding member fixing device that can easily attach the embedding member to a precise and stable formwork.
[0005]
[Means for Solving the Problems]
(1) In order to solve the above-mentioned problems, the fixing device for an embedding member according to the present invention includes an embedding part that is embedded in a concrete product and is supported by the form frame so that the exposed part goes out of the form frame. When the exposed portion of the insert member is attached to the mold and clamped by the clamping portion of the open / close type fixing means which is elastically pressed by a spring, the embedded member is fixed to the mold frame, and the open / close type fixing means is supported by the mold frame. An embedding member fixing device in which the embedding member is detached from the formwork when the clamping means is separated from the exposed portion by being opened by the opening means.
A spring that elastically presses the open / close type fixing means is provided outside the range where the slot leaks from the gap between the exposed portion of the embedded member and the mold, and acts symmetrically on the open / close type fixing means. It is characterized by adopting a configuration adapted to the above.
[0006]
(2) Adopting a unitized structure in which a fixing means for an openable / closable embedded member having a clamping portion, a spring for elastically pressing the fixing means, and an opening means for opening the fixing means are supported by one support frame. It is preferable.
[0007]
(3) When a plurality of embedded members and open / close type fixing means are arranged at a predetermined interval, an opening means for opening the open / close type fixing means is attached to a common shaft, and a plurality of operations are performed by operating the shaft. It is preferable to employ a configuration in which the opening member is interlocked so that the plurality of fixing members can be simultaneously opened and closed.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an embodiment in which an embedding member fixing device A according to the present invention is applied to a mold for forming a concrete sleeper. The apparatus A in this embodiment includes a mold 1 that forms a concrete sleeper (not shown), an embedded part 3a in the mold 1 at the bottom of the mold 1, etc., and an exposed part 3b outside the mold 1. An embedding member 3 supported so as to come out, and an open / close type embedding in which the exposed portion 3b of the embedding member 3 is clamped by the clamping portions 5a and 5a when the embedding member 3 is attached to the mold 1 and closed by the spring pressure of the springs 4 The fixing means 5, 5 for the member 3 and the opening means 6 for opening the openable fixing means 5, 5 supported by the mold 1 and closed by the springs 4, 4 are configured.
[0009]
The mold 1 of the apparatus A is provided with a window-shaped receiving portion 8 having a step portion 7 at the lower portion of the periphery at a position where the embedding member 3 of the bottom portion 2 is installed. When the seat plate 10 provided with the holes 9 is engaged and the exposed portion 3b of the embedded member 3 is supported so as to be exposed downward in the hole 9 of the seat plate 10, the embedded member 3 is moved to the seat plate. 10 is attached to the bottom portion 2 of the mold 1 and the receiving portion 8 with which the seat plate 10 is engaged is formed larger than the seat plate 10 by a necessary adjustment range. The seat plate 10 is moved inside so that the installation position of the embedded member 3 can be adjusted.
[0010]
The embedded member 3 can be positioned at a desired installation position of the bottom portion 2 of the mold 1 by engaging the exposed portion 3b with the hole 9 of the seat plate 10. However, since the embedding member 3 is not fixed, holes or concave locking portions 11 and 11 are provided on both sides of the exposed portion 2b, and the opening and closing type fixing means 5 and 5 are provided on the locking portions 11 and 11, respectively. When the sandwiching portions 5a, 5a are engaged, the embedding members 5 and 5 are surely fixed to the bottom portion 2 and the like so that the embedding members 5 and 5 do not move even when concrete pouring pressure is applied.
[0011]
If the fixing means 5 and 5 for the openable and closable embedded member 2, the springs 4 and 4 for elastically pressing the fixing means 5, and the opening means 6 for opening the closed fixing means 5 and 5 are unitized, manufacturing and mounting are possible. In order to facilitate, the support frame 12 is attached to the lower side of the bottom 2 of the mold 1 and supported by the support frame 12. And the attachment plates 13 and 13 of the fixing means 5 and 5 are attached to the part which attaches the fixing means 5 and 5 of the embedding member 3 of the support frame 12 by the slide pieces 14 and 14 so that a movement is possible.
[0012]
The fixing means 5 and 5 of the embedding member 3 are formed so as to form a U shape and an inverted V shape, and an intermediate portion is rotatably attached to the mounting plate 13 by a shaft 15 and embedded at the upper end. A holding part 5a to be engaged with the engaging part 11 of the inserting member 3 is provided, and a passive roller 17 fitted to a shaft 16 provided between the lower end of the adjacent fixing means 5 is provided at the lower end. Yes.
[0013]
The springs 4, 4 for elastically pressing the fixing means 5, 5 are arranged so that the coil member 4 a, the fixed part 4 b projecting downward from the coil part 4, and the movable part 4 c projecting upward from the coil part 4 a sandwich the fixing member 5. Two pairs of structures are provided, wherein the fixing portion 4b is engaged with the hole 18 formed in the mounting plate 13, and the movable portion 4c is engaged with the back surface of the upper portion of the fixing means 5, thereby a pair of fixing means. A symmetrical pressing force is applied to 5 and 5.
[0014]
The opening means 6 for opening the fixing means 5 and 5 closed by being elastically pressed by the springs 4 and 4 includes an eccentric circular cam attached to the shaft 19 penetrating the support frame 12 in the left-right direction so as to correspond to the passive roller 17. When the eccentric cam 6 is rotated by the shaft 19 and the large eccentric portion is engaged with the passive rollers 17 and 17, the fixing means 5 and 5 are opened against the elastic force of the springs 4 and 4, and the small eccentricity is small. When the portion is made to correspond to the passive rollers 17, 17, the fixing means 5, 5 are closed by the elasticity of the springs 4, 4.
[0015]
The eccentric circular cam 6 is changed to a symmetrical double slope cam as shown in FIG. 3, and a passive roller 17 having a shaft 16 attached to the lower ends of the fixing means 5 and 5 is engaged with the slopes on both sides thereof. The structure functions similarly. That is, when both the slope cams 6 are rotated by the shaft 19 and the height of the slope is engaged with the passive rollers 17 and 17, the fixing means 5 and 5 are opened against the elasticity of the springs 4 and 4, and the slope is lowered. When the place is made to correspond to the passive rollers 17, 17, the fixing means 5, 5 are closed by the elasticity of the springs 4, 4.
[0016]
In the apparatus A shown in the embodiment, the fixing means 4 and 4 of the embedding member 2 are opened by the opening means 6 as shown by a chain line in FIG. If the exposed portion 3 b is inserted and exposed to the lower side of the seat plate 10 and the fixing means 5 and 5 are closed by the opening means 6, the fixing means 5 and 5 are closed by the elasticity of the springs 4 and 4. Thus, the holding portions 11 and 11 provided on the exposed portion 3b of the embedding member 3 are strongly held by the upper holding portions 5a and 5a, and a downward pressing force is applied. Therefore, the embedding member 3 is firmly fixed to a desired position of the bottom portion 2 of the mold 1, and if concrete is cast into the mold 1, a concrete sleeper in which the embedding member 2 is embedded can be formed. it can.
[0017]
When the concrete sleepers are formed in the mold 1 as described above and can be released, the fixing means 5 and 5 are opened by the opening means 6 as shown by the chain line against the elasticity of the springs 4 and 4. Then, the holding portions 5a and 5a are separated from the engaging portions 11 and 11 provided in the exposed portions 3b and 3b of the embedded member 3, and in this state, the concrete sleeper formed by opening the mold 1 can be released. In this case, the embedded member 3 is detached from the bottom 2 of the mold 1 along with the concrete sleepers.
[0018]
The fixing and detachment of the embedding member 3 to the bottom 2 or the like 2 of the mold 1 are not shown in the drawing, as shown in FIG. In the case of triples, fives, etc. in which three, five, etc. of the molds 1 are arranged in parallel, a series of support frames 12 of the fixing device A respectively provided on the bottom 2 of the molds 1 of each series. If the opening member 6 is provided on the shaft 19 so as to correspond to the fixing means 5 and 5 of each fixing device A, the opening means 6 of each fixing means 5 and 5 is rotated by the rotation of the shaft 19. When interlocking is rotated, the plurality of fixing members 5 and 5 are simultaneously opened or closed depending on the rotation direction. Therefore, the fixing and releasing of the embedding member 3 with respect to the mold 1 such as a double, triple, or five series can be easily performed with one operation.
[0019]
The fixing and releasing of the embedding member 3 to the mold 1 by the one operation is performed in the same manner when a plurality of sets of embedding members 3 are disposed on one mold 1. In this case, however, the shaft 19 of the opening means 6 for opening the fixing means 5 and 5 of the embedding member 3 must be arranged in series in the longitudinal direction of the mold 1 as shown in FIG. Therefore, as shown in FIG. 5, the shaft 19 is supported by the support frame 12 so as to be positioned between the fixing means 5 and 5 of each set, and the opening means 6 is provided at a portion corresponding to the fixing members 5 and 5. The plate cam is fixed, and when the large eccentric portion of the plate cam engages with the fixing means 5, 5, the fixing means 5, 5 is opened, and when the small eccentric portion corresponds to the fixing means 5, 5, the fixing means 5, 5 Is closed by springs 4 and 4. The fixing means 5 and 5 have a shape shown in FIG. 4 because a portion below the portion supported by the shaft 15 is unnecessary.
[0020]
According to the said structure, when the axis | shaft 19 is rotated, the opening means 6 of each fixing means 5 and 5 will be interlocked | rotated, and the several fixing members 5 and 5 will be opened or closed with the rotation direction. Therefore, even when a plurality of sets of the embedding members 3 are arranged at a predetermined interval in one mold 1, the embedding members 3 can be fixed and released with respect to the mold 1 with one operation.
[0021]
FIG. 7 shows an embodiment in which an embedding member 3 called an embedding plug that does not have an exposed portion from the mold 1 is fixed to the mold 1 by the apparatus A of the present invention. In this embodiment, the embedded member 3 is provided with a female screw 20 that opens downward, and the mounting member 21 is screwed into the female screw 20 to attach the exposed member 22 to the embedded member 3. The exposed member 22 is formed with a locking portion 11 for engaging the holding portions 5a and 5a of the fixing means 5 and 5.
[0022]
According to the above configuration, when the exposed member 22 attached to the embedding member 3 is exposed to the lower side of the bottom 2 from the hole 9 formed in the bottom 2 of the mold 1, the locking portion provided on the exposed member 22. 11 corresponds to the holding portions 5a and 5 of the fixing means 5 and 5. In this state, the opening means 6 closes the fixing means 5 and 5 that are opened as shown by a chain line in FIG. The fixing means 5 and 5 are elastically pressed by the springs 4 and 4 so as to firmly hold the engaging portion 11 of the exposed member 22 by the holding portions 5a and 5 and also exert a downward pressing force. Therefore, when the embedded member 3 is securely fixed to the bottom 2 of the mold 1 and concrete is placed in the mold 1, a product such as a concrete sleeper in which the embedded member 3 is embedded can be formed. .
[0023]
When the product is molded and released as described above, the holding means 5 and 5a are opened by the opening means 6 as shown by the solid line in FIG. Remove from the stop 11. Therefore, when the mold 1 is opened and the product is released, the exposed member 22 is released from the mold 1 along with the product, and is therefore embedded in the released product. If the mounting member 21 is removed from the female screw 20 of the embedded member 3 and the exposed member 22 is removed, a product such as a concrete sleeper in which the embedded member 3 without the exposed portion is accurately embedded at a predetermined position can be obtained. In this embodiment, if the opening means 6 of the fixing means 5 and 5 are arranged as shown in FIG. 6, a plurality of sets of fixing means 5 and 5 arranged on one mold 1 are opened in conjunction with each other. The embedding member 3 can be fixed to and released from the mold 1 with a single operation.
[0024]
The fixing device A for the embedded member according to the present invention can be used not only for the mold 1 for forming the concrete sleeper as shown in the above embodiment, but also for the concrete slab for rail laying. Since the embodiment for the concrete slab is similar to the embodiment for the concrete sleeper forming form 1 described above, the drawings and description of the embodiment for the concrete slab are omitted.
[0025]
【The invention's effect】
The embedding member having the effect exposed portion of claim 1 can be quickly and surely fixed to the mold by a simple operation and can be embedded in the product. After the product is molded, the embedding member is removed from the product. It can be easily detached from the mold with the mold, and this device is suitable for installation under the mold and has a simple configuration with a small number of parts. Less damage occurs.
[0026]
Even if leakage occurs from the gap between the exposed portion of the embedding member and the hole of the mold, no spring is applied to the spring that presses the fixing member. For this reason, it is possible to perform the function of the spring stably and reliably without troublesome work for cleaning the spring.
[0027]
Since the springs that elastically press the pair of fixing members are provided so as to independently exert a symmetrical pressing force from the left and right, the holding of the exposed portion by the fixing means is performed in a balanced manner so that the embedded member is accurate and stable. Can be fixed to the formwork.
[0028]
According to the second aspect of the present invention, a device with high accuracy can be easily manufactured by forming a unit by supporting the fixing means of the embedded member, the spring for elastically pressing the fixing means, and the opening means for opening the fixing means on the support frame. It can be easily attached to the frame and operates reliably without adjustment.
[0029]
Advantages of Claim 3 A plurality of sets of fixing means provided on one mold or an opening means for opening and closing a plurality of sets of fixing means provided on a parallel mold such as two, three, five, etc. Since it is attached to the shaft of the book and interlocked, fixing a plurality of sets of embedding members to the formwork can be easily performed in one operation, and the work efficiency is remarkably improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a configuration of an embedding member fixing device according to the present invention. FIG. 2 is a longitudinal front view of the same. FIG. 3 is a partial longitudinal side view showing a modification of a cam of the opening means. FIG. 4 is a longitudinal side view equipped with a plurality of the devices as described above so as to be interlocked with a double formwork. FIG. 5 is a longitudinal side view of another embodiment of an opening means for opening and closing the fixing means of the device. [Fig. 6] Vertical front view of the same as above [Fig. 7] Vertical side view equipped with multiple devices of the same as above to be linked to one formwork [Fig. 8] This device is used to fix the embedded member without the exposed part Vertical side view [Explanation of symbols]
A fixing device 1 mold 2 bottom 3 embedding member 3a embedding part 3b exposed part 4 spring 5 fixing means 5a clamping part 6 opening means 9 hole

Claims (3)

Opening and closing type, where the embedded part in the concrete product is inside the mold, and the exposed part of the embedded member supported by the mold so that the exposed part goes out of the mold is attached to the mold and elastically pressed by a spring. When sandwiched by the clamping part of the fixing means, the embedded member is fixed to the mold, and when the opening / closing type fixing means is opened by the opening means supported by the mold and the clamping part is separated from the exposed part, the embedded member is A fixing device for an embedding member that is configured to be detached from a mold,
A spring that elastically presses the open / close type fixing means is provided outside the range where the slot leaks from the gap between the exposed portion of the embedding member and the hole of the mold, and applies a symmetrical pressing force to the fixing means. A fixing device for an embedding member, characterized in that it is a thing. A fixing means for an openable / closable embedded member having a clamping portion, a spring for elastically pressing the fixing means, and an opening means for opening the fixing means are supported by a single support frame to form a unit. Item 2. The fixing device for an embedding member according to Item 1. When a plurality of embedding members and opening / closing type fixing means are arranged at a predetermined interval, an opening means for opening the opening / closing type fixing means is attached to a common shaft, and the plurality of opening members are operated by operating this shaft. The apparatus for fixing an embedding member according to claim 1 or 2, wherein a plurality of fixing members are simultaneously opened and closed in conjunction with each other.

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