JPS59165765A - Liftable mold frame apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a formwork device that can be raised and lowered, and can be used to easily prepare and execute concrete construction.

When constructing concrete for dams, bridge piers, retaining walls, etc., formwork is firmly fixed to the wall surface to be formed, and concrete is poured into the formwork. When the poured concrete is poured, the previously installed formwork is removed from the concrete surface, raised along that surface, and fixed in a position corresponding to the next pouring. The formwork used for concrete construction of the above-mentioned dam etc. generally has one or two sets of legs fixed to the back of the template.
A lever structure with a hanging ring attached to the top of the leg material is used. The legs of this type of formwork are long (protruding) downward from the template, and during the above-mentioned pouring, they are inserted through the Siebolds into the anchor bolts that have already been embedded in the previously poured concrete. The legs are firmly fixed to the concrete surface.In this way, the legs securely fix the template in the position required for the next pouring. In order to pull the formwork upward in this way during the next concrete pouring, a lifting device such as a crane grasps the hanging ring and lifts the formwork to a position where the formwork occupies a predetermined extended surface of the poured concrete. Furthermore, when removing the template from the concrete surface that has been launched, insert a jack or similar tool between the leg material and the previously launched concrete surface near the Siebold where the anchor bolts were removed, and remove the template. must be peeled off from the concrete surface, and the work is complicated.Therefore, the work of using a crane to change the position of the formwork is quite troublesome and involves danger.

The formwork device of the present invention initially installs the formwork in a fixed position using a crane or the like to pour concrete at the lowest part using the conventional method, but after pouring the concrete at the bottom, the formwork is repeatedly placed upwards. During pouring, the formwork can be repeatedly raised very easily, accurately, and safely. Moreover, by using this device, the template can be peeled off from the concrete surface extremely easily. To summarize, in each assembly, two sets of leg assemblies with a guide interval corresponding to the thickness of the Siebold to be screwed into the anchor bolt are attached to the back of the inward vertical guideway. A slide having formworks fixed to a form plate facing each other and parallel to each other, and a hook that slides along opposing guideways provided between the vertical guideways and engages and fixes the Siebold on the upper part. This formwork apparatus includes a frame, a connector that connects the formwork and the frame in a relatively movable manner, and means for operating the connector. The formwork device of the present invention is as described above, and is designed to repeatedly move the formwork from below to above and along the concrete surface in its extension direction, which is different from the conventional method of repeatedly lifting the formwork with a crane. The idea was based on a completely different principle.

An embodiment will be described in detail below with reference to the drawings. Formwork (1)
is substantially similar to the conventional one and is a long horizontal support (a, 4.5) passed horizontally behind the template (2) (in this case a chevron)
and other short angles (6, 7, 8; 6', 7', 8')
Two sets of leg assemblies (9, 9') are attached via. Since both leg assemblies have the same structure, only one (9) will be described. The assembly consists of a pair of channel members (10, 11) with their abdominal backs (12, 121) facing each other, with the backs spaced at an interval (1) corresponding to the thickness of the Siebold rod diameter described later.
4) and is fixed to the template (2). A hanger 3J (15) is attached to the top of the channel member.

In addition, (16) and (17) are the Siebold intervals (14
) (18) and (19) are washer plates for attaching to the leg assembly, respectively. The grooves of the channel (10) are mounted opposite the grooves of the corresponding inner channel of the leg assembly (9'). In this case, an H-shaped member or a C-shaped member can be used instead of the corresponding channel member. Also, if the channel member (11) is installed in parallel with the channel member (10) with an interval corresponding to the thickness of the diameter of the Siebold (t 0) between the channel member (10), the groove member (10) is not necessarily provided. Although it is limited to the shape material, other long materials may be used as long as it has structural strength.The lower end of the leg assembly is fixed with the cross member (5o).The channel member (
The inclination between the opposing grooves of the groove member (10') corresponding to 10 thighs is the upper and lower protruding shoes (20, 21; 20', 21'). A frame (22) is arranged, and an upper beam (28) of the frame (22) is arranged.
), that is, on the side facing the template, a hook (25, 25') is attached so as to be rotatable about a position (32) removed from the leg assembly as a fulcrum (24, 24'). . flame(
22) There is a pair of inwardly inclined beams (26, 26') downward from both ends of the upper beam (2B), and a cross member (
The lower end of a hydraulic cylinder (28) is pivotally connected to 27), and a piston barrel (29) that slidably protrudes from the upper part of the cylinder (28) is located approximately at the center of the lower cross member (5) of the template (2). It is pivoted (8o). (81, 81') is the horizontal member (4)
This is a rod that connects the connecting part of the channel members (10, 10') and the pivot point (8o). Note that the hydraulic cylinder (28) is not necessarily one that uses oil pressure, but may also use compressed air. Since the operation mechanism for inflowing and discharging the pressure oil is well known, the inflow port, the discharge port, the hydraulic pressure source, and the pressure oil passage connecting the hydraulic pressure source, the inflow port, and the discharge port are omitted in the drawing. or,
Instead of the hydraulic cylinder, the frame (22) and the formwork may be connected for relative movement by another mechanism such as a rack and pinion.

The operation of the device of the present invention will be described. Since the method of fixing the supporting pedestals to the concrete surface is the same, only one will be described. First, the formwork assembly (L22), in which the frame (22) is integrally attached so that it can slide and move relative to the template, is suspended from a hanging ring and installed at the position where concrete is to be poured. .

Seapol (86) screwed together with an anchor bolt (85) that is embedded in the concrete A that has been cast in advance or the time before the previous cast, or that is embedded elsewhere
) through the washer plates (17, 17') and the nut (1
9, 19') between the channel members (10, 11), and the upper anchor poles embedded in the previously poured concrete B at intervals corresponding to the thickness of the concrete to be poured) ( 87), the Siebold (88) is similarly fixed between the grooves using the washer plate (16) and the oak (18) (Fig. 1). second seapol)
(i38) is hooked (25) to prevent the frame from moving vertically relative to the channel. Here, the cylinder (28) is actuated to move the template (2) correctly to the position where concrete is to be poured this time, and it is stopped at that position. The template (2) is provided with a hole (41) into which the Siebold (40) is inserted through, at a location corresponding to the position of the anchor pole (89) to be embedded during concrete pouring. Six parts of concrete will be poured here.

(Anchor pole embedded during concrete pouring in section 6)
(219) and the Siebold (40) are screwed together through the hole, and the Siebold (40), like other Siebolds, is fixed between the channels and maintained in its position until concrete is poured. After concrete is poured, remove the last seapol (40) connected from the anchor bolt (39) and from the channel member. Loosen the anchor pole (18) in the direction of removal, and then tighten the bolts (19, 19') further.
85), the lower part of the channel member (IL12) moves slightly in the direction of pushing the concrete 17), and the middle part moves slightly in the direction of moving away from the concrete. Therefore, the template (2) moves in the peeling direction with respect to the concrete IJ-to C that was launched last (thereby, the template (2) separates from the surface of the concrete) C, and the template peels off easily. It is done. Then the cylinder (
28), the piston rod (29) rises from the state shown in Fig. 1 to the state shown in Fig. 3, and along with this, the formwork (1)
moves relative to the frame (22) and rises.

However, the frame does not rise because its hooks are hung on Seabolts (88) attached to the concrete, but only the formwork rises along the straight line of Seapole (1, 1) between the channel members. After the formwork is raised, the anchor pole (89) that was embedded in the concrete C during the previous concrete pouring is reconnected with the Seabolt (40) that was excluded from the rise, and the seabol (40) that protrudes from the concrete C is reconnected. Support the bottom edge of the template.

In this state, remove the hook (25) from the lower Siebold (
Actuate the cylinder (28) (shown in phantom line) to open the frame (
22) is raised until it approaches the template.

After the frame has been raised, first locate the frame on the concrete surface using the upper Siebold (40) installed at the channel spacing (14) @ (25) 1), and then adjust the cylinder. Move the template to the correct position and secure it in place to complete preparations for the next concrete pour.

For pouring the above concrete, frame (22) is placed on template (2).
) The first pouring is carried out with the formwork supported on the concrete surface at a position close to . For the next pouring, we have described an example in which the frame is fixed at this position, the formwork is raised, and the formwork is fixed at the raised position to prepare for the next concrete pouring. However, since the formwork is fixed and supported on the concrete surface, it does not affect concrete pouring even if the formwork and frame are separated or close to each other.
This should be determined by considering the stability of the formwork and the difficulty of the work at the site of use.

The relative movement between the formwork and the frame is determined by the frame shoe (
20, 21) move along the internal groove of the channel member (so that the movement is smooth and the mutual position of the two is precisely maintained).

As described above, the formwork device of the present invention sequentially moves the formwork upward to a predetermined position by the inchworm-like movement of the formwork and frame, fixes it at that position, and surrounds the fixed place with the template of the formwork. This involves pouring concrete into the area. Therefore, the work can be repeated easily because the formwork is lifted from below instead of being lifted up by a crane or the like every time the formwork is repeatedly cast as in the past. Even when the formwork is being raised, at least two Siebolds connected to anchor bolts are always fitted at a certain distance between the leg and base bodies at a predetermined distance in the vertical direction, so the formwork is placed on the extension line of the Siebolds. There is no need to adjust the template position laterally after movement and upward movement. Moreover, peeling between the concrete surface and the template surface after concrete is poured is extremely easy, and peeling does not require jacking or other complicated operations.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show the formwork apparatus of the present invention, FIGS. 1 and 2 are front and side views showing the position of the formwork during concrete pouring, and FIGS. 8 and 4 are respectively They are a front view and a side view, respectively, showing a state in which the formwork has been moved to a position to be poured next time. l: Formwork 2: Template 9.9': Leg assembly 1O111
: Channel member 12.18: Abdomen 14: Interval 20.21:
Shoe 22: Frame 25: Hook 28: Hydraulic cylinder 29: Piston rod 85. 87. ("i1 No. Vermilion / Figure rr' Volume 2 / 15

Claims (1)

[Scope of Claims] (υ In each assembly, two sets of leg assemblies each having a guide interval corresponding to the thickness of the Siebold to be screwed with the anchor bolt are formed at the back of the inward vertical guide path. A slide having a template fixed to the template with paths facing and parallel to each other, and a hook that is provided between the longitudinal guideways, slides along the opposing guideways, and engages and fixes the Siebold on the upper part. A formwork device that can be raised and lowered, comprising a frame, a connector that connects the formwork and the frame so that they can move relative to each other, and means for operating the connector. (2) Each set of leg assemblies has a thickness of The formwork device according to claim 1, comprising a pair of channel members arranged with their abdominal backs facing each other with an interval corresponding to . (3) A connection for connecting the formwork and the frame. The formwork device according to claim 1, wherein the child comprises a cylinder attached to the frame by receiving a piston rod extending from the formwork toward the frame into a nesting stock. The formwork device according to claim 1, wherein the means is a hydraulic cylinder. (5) The formwork device according to claim 1, wherein the means for actuating the connector is a pneumatic cylinder.