JPH07279417A - Beam form device and execution method of beam - Google Patents

Abstract

PURPOSE:To constitute the structure of a lifting gear simply with light weight at low cost while stably lifting and lowering and moving the lifting gear quickly by lightening the burden of the load of beam forms applied to the lifting gear. CONSTITUTION:Two timbering frames B, to which pairs of left and right timberings 4 are assembled integrally, are mounted to the lower section of beam forms A consisting of beam bottom forms 1 and a pair of left and right beam side forms 2. The beam bottom forms 1 are fixed onto bottom-form bearing frames 3 arranged to the upper sections of the centers of the timbering frames B, and a lifting gear bearing side-form bearing frames 8, in which pairs of beam side forms 2 are disposed in upright onto top faces, in a vertically movable manner is provided while the side-form bearing frames 8 are connected and fastened to the bottom-form bearing frames 3 at the places of upper setting. The lifting gear is composed of expansion links 12 and a hydraulic cylinder 13. The side-form bearing frames 8 are lifted and lowered and moved while using the vertical frames 3a of the bottom-form bearing frames 3 as guides.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides at least two supporting frames which are integrally assembled with a pair of left and right supporting structures at the bottom of a beam form consisting of a beam bottom form and a pair of left and right beam side forms. And a method of constructing a beam.

[0002]

2. Description of the Related Art As a conventional beam form device, a beam form is cast and cured and then the beam form is released from the mold and the entire beam form is appropriately lowered by a jack, or a beam bottom form is used. There was one that removed or reduced the support received and lowered the entire beam formwork.

However, the above-mentioned conventional beam form device is
There are problems that the beam formwork is heavy and it is difficult to move down, the lifting device is overloaded, and the beam back is difficult to adjust.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and an object thereof is to reduce the load of the beam formwork applied to the lifting device. Accordingly, it is an object of the present invention to provide a beam formwork apparatus and a beam construction method capable of constructing the structure of the lifting device in a simple, lightweight and inexpensive manner, and capable of stably and quickly moving up and down.

[0005]

The beam formwork apparatus of the present invention comprises:
A beam form device comprising at least two supporting frames integrally assembled with a pair of left and right supporting works below a beam form frame composed of a beam bottom form and a pair of left and right beam side forms. An elevating device for fixing the bottom formwork to a bottom formwork support frame arranged in the upper center of the support frame, and supporting the side formwork support frame in which the pair of beam side formworks are erected on the upper surface so as to be vertically movable. And a means for connecting and fixing the side formwork support frame to the bottom formwork support frame at the upper set position. The lifting device includes, for example, a telescopic link and a hydraulic cylinder. The present invention is also characterized in that the vertical frame of the bottom formwork support frame is used as a guide to move the side formwork support frame up and down.

The beam construction method of the present invention is the method of constructing a beam in which only the beam-side form of a beam form consisting of a beam bottom form and a beam-side form is moved up and down. The beam bottom formwork and the beam side formwork are fixed at the set position, and the beam side formwork can be moved up and down at the same time when the beam formwork is set and released from the mold. It is characterized in that the load is applied.

[0007]

The beam formwork apparatus of the present invention fixes the beam bottom formwork on the bottom formwork support frame arranged in the upper center of the supporting frame integrally formed, and when the beam formwork setting is completed, the beam formwork is completed. Since the entire load of concrete and beam formwork during casting and hardening is supported by the support frame, the lifting device is equipped with load of formwork component other than side formwork support frame and beam side formwork and beam concrete. It does not cost. According to the second aspect of the present invention, since the lifting device for the beam-side mold is composed of the telescopic link and the hydraulic cylinder, the side-frame supporting frame can be moved vertically. According to the third aspect of the invention, since the side frame support frame is vertically moved by using the vertical frame as a guide, the side frame support frame can always be smoothly moved up and down. According to the invention of claim 4, the beam-side formwork is raised during the work of setting the beam formwork. The load of the beam-side form is applied to the lifting device. Further, when the beam formwork is set, the beam bottom formwork and the beam side formwork are fixed so that the load of the concrete and the entire beam formwork at the beam formwork upper set position is supported by the support frame. When removing the beam formwork,
By unlocking the beam bottom formwork and the beam side formwork, the load of the beam side formwork is supported by the lifting device. After lowering the beam-side formwork by this elevating device, the supporting frame is lowered to separate the bottom formwork from the concrete.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, A is a beam form, and B is a supporting frame that supports the beam form A, and constitutes a beam form device as a whole. The beam form A is composed of a beam bottom formwork 1 arranged substantially horizontally and a beam side formwork 2 arranged substantially vertically to the left and right of the beam bottom formwork 1.

The support frame B is a bottom frame supporting frame 3 arranged below the beam bottom frame 1 and supporting the beam bottom frame 1 via a single pipe 1a, and both sides of the bottom frame supporting frame 3. And the left and right supporters 4 arranged in the. Further, the supporting work 4 includes left and right waist tubes 4b integrally attached to the bottom formwork support frame 3 via a horizontal rod 4a, and a difference in height between the waist tubes 4b. It is composed of an inlet pipe 4c. Jacks 4b 'and 4c' for fine height adjustment are provided at the lower end of the waist tube 4b and the upper end of the insertion tube 4c, respectively. A caster device 5 is attached to the lower outer side of the waist tube 4b to freely and easily move the beam form device.

The beam-side mold 2 is supported from the outside by a support fitting 7 via a single pipe 6. The support fitting 7
As is clear from FIG. 3, a vertical support rod 7a for pressing the beam-side formwork 2, a horizontal slide rod 7b attached to the lower end of the support rod 7a, and an oblique rod for reinforcing the support fitting 7. 7c. The support rod 7a is provided with a foam tie hole 7a '. In this example,
Since the support metal fitting 7 is configured to support the beam-side mold 2 in a stable and reliable manner, it is not necessary to specially provide a separator for connecting the left and right beam-side molds 2, 2.

As shown in FIG. 3, the slide rod 7b of the support fitting 7 has a downward groove, and the groove fits with the side frame support frame 8 (phantom line). As shown, it can slide in the longitudinal direction of the side frame support frame 8. On both side surfaces of the side frame support frame 8, elongated holes 8a are formed in the longitudinal direction. Reference numeral 8b is a pin, which is inserted into the elongated hole 8a and a pin hole 7b '(see also FIG. 3A) formed in the slide rod 7b. Further, as shown in FIG. 4 (B), the inside of the side frame support frame 8 is hollow, the moving piece 8c is accommodated slidably in the longitudinal direction, and the pin 8b is moved. It is also inserted in the piece 8c.

The moving piece 8c can be moved back and forth between the solid line position and the imaginary line position by rotating the beam width adjusting screw 8d, and as a result, the support fitting 7 can be moved through the pin 8b. It reciprocates between the solid line position and the virtual line position. By moving the positions of the left and right support fittings 7 in this way, the distance between the left and right beam-side molds 2, 2, that is, the beam width can be easily changed. The beam bottom mold 1 needs to be changed in accordance with the change in beam width.

As is apparent from FIG. 5, the bottom formwork support frame 3 has two vertical frames 3a, which are arranged in parallel on the left and right, and a ceiling for integrally connecting the upper ends of the left and right vertical frames 3a. The end frame 3b and a plurality of connecting pieces 3c for integrally connecting the top frame 3b.
And a gap G having a predetermined width is formed between the two vertical frames 3a. The side frame support frame 8 is inserted into the gap G in a horizontal state and guided so as to move up and down.

A plurality of (four in this embodiment) pin holes 3a 'are formed at appropriate intervals on the upper portion of the vertical frame 3a, and the side frame support frame 8 is fixed by the pins 9. The fixed position of the side frame support frame 8, that is, the set position can be appropriately selected and set. In the embodiment of FIG. 5, the second pin hole 3 from the top
It is fixed at the position a '.

As is apparent from FIGS. 6A, 6B and 6C, 10 is an elevating frame, which is the bottom formwork of the supporting frame B arranged adjacent to the beam formwork A in the longitudinal direction. The side frame support frames 8 that move up and down while being guided along the support frames 3 are fixed by fixing bolts 10a. Further, as shown in FIGS. 6B and 6D, 11 is a fixed frame, which is a horizontal frame 4a of the pipe support 4 of the support frame B arranged adjacent to the beam form A in the longitudinal direction. ,
They are connected and fixed by fixing bolts 11a.

The fixed frame 11 and the elevating frame 10
A pantograph-type telescopic link 12 is interposed between them, and the telescopic link 12 is vertically moved by an elevating device including a hydraulic cylinder 13 to elevate or lower the elevating frame 10. The lifting drive device according to the present invention is not limited to the above-mentioned one, and may have any structure as long as it can move the lifting frame 10 up or down.

In FIG. 2, 14 is a brace, and 1 is a brace.
Reference numeral 5 is a connecting single pipe, A'is an auxiliary formwork, and B'is an auxiliary pipe support.

Next, the operation of setting and removing the beam formwork by the beam formwork apparatus of the above embodiment will be described. First, the caster device 5 is used to move it to a predetermined installation position. Next, the jack 4b 'is adjusted to adjust the height of the supporting frame B to determine the height of the beam bottom form 1, that is, the position of the lower end surface of the concrete beam to be constructed.

Subsequently, the pin 9 is pulled out to separate the side frame support frame 8 from the bottom frame support frame 3, and then the hydraulic cylinder 13 is operated to extend and retract the side frame support frame 8 by the telescopic link 12. Adjust the height position. In this case, the jack 4c 'is lowered and separated from the side frame support frame 8.

Since the supporting metal piece 7 and the beam-side mold 2 are integrally assembled to the side-mold supporting frame 8, the beam-side mold 2 is moved along with the height adjustment of the side-mold supporting frame 8. Move up and down. As described above, since the beam bottom formwork 1 is supported by the upper end portion of the bottom formwork support frame 3, even if the beam side formwork 2 moves up and down, the position of the beam bottom formwork 1 changes. do not do. Therefore, by moving the beam-side formwork 2 up and down, the beam width is adjusted and set.

When the position of the side frame support frame 8 is set, the pin 9 is inserted to fix the side frame support frame 8 to the bottom frame support frame 3 for support and adjust the jack 4c '. The side mold support frame 8 is supported. As a result, the beam form A is directly fixedly supported by the support frame B, and the load of the concrete to be placed is
It is supported by the supporting frame B, and the load is not applied to the telescopic link 12 and the hydraulic cylinder 13.

The operation procedure such as the movement of the beam form device by the caster device 5, the adjustment of the beam bottom formwork 1 and the height adjustment of the beam side formwork 2 is not limited to the above order, and may be performed as necessary. Can be performed at any time and in any order.

After the beam form A is set, beam concrete is poured. Once the concrete is cured and hardened,
First, the supporting metal 7 is moved outward along the side frame supporting frame 8 to separate the beam side frame 2 from the beam concrete, and the supporting frame B is lowered by the jack 4b 'to lower the beam bottom frame. 1 is separated from the beam concrete to complete the demolding.

After the beam form A has been demolded, if necessary, the jack 4c 'is lowered and the pin 9 is pulled out to separate the side frame support frame 8 from the bottom form frame support frame 3. , Telescopic link 12 and hydraulic jack 1
3, the side frame support frame 8 or the beam side frame 2
Are lowered to the position shown in FIG.

[0025]

【The invention's effect】

1) The beam bottom formwork is fixed on the bottom formwork support frame placed in the upper center part of the integrally constructed support frame, and when the beam formwork setting is completed, concrete and beam form during beam concrete pouring and hardening Since the entire frame load is supported by the supporting frame, the lifting device is not loaded by the mold component members other than the side frame support frame and the beam side frame or the beam concrete. As a result, the burden on the lifting device is reduced,
The structure can be configured easily, lightweight and inexpensively. 2) Since the elevating device for the beam-side formwork is composed of the expansion link and the hydraulic cylinder, the side formwork support frame that supports the left and right beam-side formwork can be raised and lowered horizontally. As a result, the heights of the left and right beam-side molds can be adjusted quickly and accurately, and the adjustment of the beams can be facilitated. 3) Since the vertical frame of the bottom formwork support frame is used as a guide to raise and lower the side formwork support frame, the side formwork support frames that support the left and right beam side formwork can always be smoothly moved up and down. . 4) In a method of constructing a beam in which only the beam side formwork of a beam formwork including a beam bottom formwork and a beam side formwork is moved up and down, a pair of left and right beam sides is used at the time of beam formwork setting work and demolding. Since the load of the beam-side mold is applied to the lifting device capable of moving the molds up and down at the same time, the lifting operation can be performed quickly and easily.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a beam form device of the present invention.

FIG. 2 is a side view of the beam formwork apparatus of the present invention.

FIG. 3 is a structural explanatory view of a support rod.

FIG. 4 is an explanatory view of the structure and operation of a side frame support frame.

FIG. 5 is an explanatory view of the structure of the bottom formwork support frame and the relationship with the side formwork support frame.

FIG. 6 is a structure and operation explanatory view of a lifting mechanism for a side frame support frame.

FIG. 7 is an explanatory view of the operation when the beam-side formwork is lowered.

[Explanation of symbols]

 1 Beam bottom formwork 1a Single pipe 2 Beam side formwork 3 Bottom formwork support frame 3a Vertical frame 3a 'Pin hole 3b Top frame 3c Connecting piece 4 Supporting work 4a Side rod 4b Lumbar tube 4b' Jack 4c Plug pipe 4c ′ Jack 5 Caster device 6 Single pipe 7 Support metal 7a Support rod 7a ′ Hole for foam tie 7b Slide rod 7b ′ Pin hole 7c Oblique rod 8 Side frame support frame 8a Long hole 8b Pin 8c Moving piece 8d Beam width adjusting screw 9 Pin 10 Lifting frame 10a Fixing bolt 11 Fixing frame 11a Fixing bolt 12 Telescopic link 13 Hydraulic cylinder 14 Brace 15 Connecting single pipe A Beam form A'Auxiliary form B Supporting frame B'Auxiliary pipe support G Gap

Claims (4)

[Claims] 1. A beam form formed by providing at least two supporting frames integrally assembled with a pair of left and right supports under a beam form consisting of a beam bottom form and a pair of left and right beam side forms. In the device, the beam bottom formwork is fixed to the bottom formwork support frame arranged in the upper center of the support frame, and the side formwork support frame in which the pair of beam side formworks are erected on the upper surface can be moved up and down. A beam formwork device comprising a lifting device for supporting the side formwork support frame and means for connecting and fixing the side formwork support frame to the bottom formwork support frame at an upper set position. 2. The lifting / lowering movement is performed by a lifting / lowering device composed of a telescopic link and a hydraulic cylinder.
Beam formwork device described. 3. The beam formwork apparatus according to claim 1, wherein the side formwork support frame is moved up and down by using the vertical frame of the bottom formwork support frame as a guide. 4. A method of constructing a beam, which comprises a beam bottom formwork and a beam side formwork, in which only the beam side formwork is moved up and down, wherein the beam bottom formwork and the beam are set at the upper position of the beam formwork. The side formwork was fixed, and the load of the beam side formwork was applied to the elevating device that allowed the pair of left and right beam side formwork to move up and down at the same time when the beam formwork was set and released from the mold. Construction method of beams characterized by.