JPH0617905U - Automatic engagement / disengagement mechanism of concrete formwork fastening device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide an automatic engagement / disengagement mechanism for a concrete form fastening device that automatically and simultaneously disengages a plurality of fastening mechanisms with only one guide member. [Structure] An actuation rod is axially supported on one of the form bodies (A or B) along a joint portion of the two form bodies A and B, and a plurality of toggle levers are provided on the actuation rod at appropriate intervals. ,
A connecting member is pivotally supported at the tip of the toggle lever. A concrete mold using a toggle mechanism in which an engaging tool provided on the connecting member and a plurality of receiving tools engaging with the engaging tool are attached to the other mold body (B or A). In the frame fastening device, a guide member in which a guide elongated hole that is curved and extends in a substantially arc shape is formed on the outer side in the direction of the other mold body, and the trunk is fixed to the mold body on the side where the actuation rod is pivotally supported. , A connecting rod passing through the guide elongated hole is arranged along the operating rod,
Further, it is characterized in that it is attached and fixed so as to be bridged over each connecting member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic engaging / disengaging mechanism of a concrete form fastening device that joins two form bases to form a concrete pouring space.

[0002]

[Prior art]

 It has been widely known that a toggle mechanism is used for fastening two formwork bodies in a concrete formwork. In the structure of such a toggle mechanism, the rotating shaft of the toggle lever is pivotally supported on one of the mold bodies, and the connecting member having the engaging member attached to the tip end portion of the connecting member is pivotally supported at the tip end portion of the toggle lever. The receiving tool that engages with the engaging tool is attached to the other mold body. After engaging the engagement tool with the receiving tool, the toggle lever is rotated to perform engagement fixation and engagement release (hereinafter referred to as "engagement / disengagement").

However, particularly in a large-sized mold, it is necessary to arrange a plurality of toggle mechanisms, which are fastening means, at predetermined intervals along the joint side, and these are engaged and removed one by one to form two molds. It was very troublesome to perform body assembly or mold opening, and workability was poor. As a solution to this, a mechanism that automatically (or in conjunction with this) engages and disengages the receiving device and the engaging device with only a series of operations of the toggle mechanism is a person other than the applicant. Therefore, it is proposed as Public Utility Model Publication No. Heisei 3-27765 and Utility Model Publication Heisei 3-106006. The details of this mechanism are given in the above-mentioned publication, but the feature of the structure is that a guide member attached to the tip of the connecting rod is separately provided on one of the molds on which the toggle mechanism is pivotally supported. And the engaging member is automatically engaged with the engaging member by moving the engaging member along the inclined surface formed on the guide member or the sliding groove.

[0004]

By the way, the above mechanism is advantageous in that it can be disengaged only by operating the toggle mechanism, compared with the above-mentioned known mold fastening device using the toggle mechanism before that. However, since there are two guide members on each side of one connecting rod, the number of parts is large. Further, since the movement of the connecting rod is affected by the shape of each guide member, smooth movement may not be obtained when the shape has variations.

Therefore, the present invention is intended to solve the above-mentioned problems, and a concrete formwork capable of automatically engaging and disengaging a plurality of fastening mechanisms with only one guide member configuration. An automatic engagement / disengagement mechanism of a fastening device is provided.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is configured as follows. An actuating rod axially supported by one of the form bodies (A or B) along the joint of the two form bodies A, B which fit together and form the desired concrete pouring space, and the base has an appropriate spacing A plurality of toggle levers fixed to the actuating rod, a connecting member whose one end is pivotally supported by the tip of the toggle lever, an engaging tool provided at the other end of the connecting member, and an engaging tool. And a plurality of receiving members attached to the other mold body (B or A) and engaging the engaging members with the receiving members, respectively, and rotating the operating rod. In a concrete form fastening device which actuates the toggle mechanism by motion to fasten the two form bodies A and B to each other, a trunk is fixed to the form body on the side where the actuation rod is pivotally supported, and A long guide hole was formed on the outside of the mold frame that was curved in a generally arc shape. A guide member and a connecting rod that is arranged along the actuating rod so as to pass through the elongated guide hole and that is attached so as to bridge the connecting members.

[0007]

[Embodiment] Next, an example of a concrete implementation of the automatic engagement / disengagement mechanism according to the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an automatic engagement / disengagement mechanism of the embodiment, and FIG. 2 is a plan view of the automatic engagement / disengagement mechanism seen from above.

The formwork bodies A and B are joined to each other to define a concrete pouring space (not shown), and an outer shape is formed so that the defined space forms a desired concrete product shape. . A substantially round rod-shaped operating rod 2 is arranged along the joint portion 1 of the mold bodies A and B, and the operating rod 2 is supported by a supporting member 3 which is rotatably attached to one of the mold bodies. It is attached to A so that the shaft can rotate. Two elliptic plate-shaped lever plates 5 and 5 which form a toggle lever 4 are fixed to the operating rod 2.

A plate-shaped connecting member 6 that is curved in a semicircle shape is attached to the tip portion 5 a of the lever plate 5 so as to bypass the operating rod 2. This attachment is carried out by sandwiching the tip end portion 6a of the connecting member 6 between the two lever plates 5 and 5 and rotatably by a pin 7. An engaging member 8 extending in the direction of the other mold B is fixedly connected to the other end 6b of the connecting member 6. The engagement tool 8 is composed of a locking portion 8a having a substantially T-shaped tip, and a threaded portion 8b having a thread groove formed in its trunk portion. This screwed portion 8b is screwed and fixed to the other end portion 6b. As a result, the length of the engaging member 8 can be adjusted by adjusting the screwing amount as appropriate. After setting the length, it is fixed by the rotation stop nut 9.

The receiving member 10 that engages with the engaging member 8 has a substantially L-shaped hook shape so as to be fitted to both ends of the locking portion 8a and to prevent movement in the direction of the mold A. Two pieces are arranged and fixed in a pair at corresponding positions near the joint portion 1 of the mold body B. It should be noted that, in the drawings, only one set of the fastening mechanism using the toggle mechanism including the toggle lever 4, the connecting member 6, the engaging tool 8, and the receiving tool 10 is shown, but in reality, such a fastening mechanism is used. A plurality of joints 1 are arranged at appropriate intervals.

Next, a plate-shaped guide member 11 extending in the direction of the mold body B is attached at a position in contact with the joint portion 1 of the mold body A, and the surface thereof is the side surface of the mold body A. It is arranged so that it is perpendicular to. A guide slot 12 is formed penetrating the surface of the guide member 11 so as to extend in the direction of the mold body B and to extend outward in a substantially arcuate shape. Further, a connecting nud 13 is arranged so as to penetrate through the elongated guide hole 12 and be parallel to the operating rod 2, and the connecting rod 13 has the other end 6b of the plurality of connecting members 6. They are attached and fixed so as to bridge each other.

Reference numeral 14 is a cylindrical fitting receiver fixed to an appropriate position of the actuation rod 2, and the tip end of an operating rod 15 for rotating the actuation rod 2 is detachably fitted and attached. Of.

[0013]

[Action]

 With the above configuration, the present invention operates as follows. The two formwork bodies A and B are fastened in the following order. First, the two mold bodies A and B are joined to each other or one of them is moved. At this time, the connecting rod 13 is positioned at the tip portion 12a of the elongated guide hole 12, and the engagement tool 8 is separated from the receiving tool 10 to the outside (two-dot broken line diagram in FIG. 2). Here, when the operating rod 15 fitted and attached to the fitting receiver 14 is rotated, the toggle lever 4 fixed to the operating rod 2 is rotated (arrow a). In conjunction with this, the connecting member 6 and the engaging member 8 attached to the tip portion 6a of the connecting member 6 follow the shape of the guide elongated hole 12 and slidably move toward the trunk portion 12b of the guide member 11 (arrow b). As a result, the locking portion 8a of the engagement receiver 8 engages with the receiver 10 and is fixed by the action of the toggle mechanism.

Next, in order to release the engagement, an operation reverse to the above is performed. By rotating the toggle lever 4 in the opposite direction (arrow c), the connecting member 6 and the engaging tool 8 are guided by the guide elongated hole 12 and move outward (arrow d), and the locking portion 8a is released. It is disengaged from the receiver 10 and moved to the outside. As a result, the molds A and B can be opened without being obstructed by the engagement tool 8.

[0015]

【effect】

 With the above configuration, according to the present invention, it is possible to automatically engage and disengage the plurality of engaging members attached to the operating rod and the receiving member only by rotating the operating rod. . Therefore, the workability can be greatly improved without the complexity of engaging the engaging member and the receiving member one by one as in the conventional case and then fastening them by the operation of the operating rod.

Further, since the guide member is not attached separately to each of the engagement mechanisms but is a single guide member, the number of parts can be reduced. Therefore, since the structure is simple, the operation reliability can be high. Further, since the guide member is single, it is possible to change the stroke of the engaging tool by changing only the guide member.

[Brief description of drawings]

FIG. 1 is a perspective view showing an automatic engagement / disengagement mechanism of the present embodiment.

FIG. 2 is a plan view of the automatic engagement / disengagement mechanism of this embodiment as viewed from above.

[Explanation of symbols]

A, B ... Formwork 1 ... Joint
2 ... operating rod 3 ... support member 4 ... toggle lever
5 ... Lever plate 5a ... Tip part 6 ... Connection member
6a ... Tip part 6b ... Other end part 7 ... Pin
8 ... Engaging tool 8a ... Locking part 8b ... Screwed part
9 ... Lock nut 10 ... Receiver 11 ... Guide member
12 ... Guide long hole 12a ... Tip 12b ... Trunk
13 ... Connecting rod 14 ... Mating receiver 15 ... Operating rod

Claims (1)

[Scope of utility model registration request] 1. An actuating rod (2) pivotally supported on one of the form bodies (A or B) along the joint of the two form bodies A, B which fit together to form the desired concrete pouring space. )
A plurality of toggle levers (4) whose bases are fixed to the actuating rod (2) at appropriate intervals, and one end (6a) of which is a tip end (5a) of the toggle lever (4).
A connecting member (6) pivotally supported by the engaging member, an engaging member (8) provided at the other end (6a) of the connecting member (6), and an engaging member (8) engaged with the other member. A plurality of receiving members (10) attached to the mold body (B or A), and the engaging rods (8) and the receiving members (10) are engaged with each other, and the operating rod (2) A concrete formwork fastening device for actuating a toggle mechanism by the rotation of (2) to fasten two formwork bodies A and B to each other, wherein a workwork form body A on which the actuating rod (2) is pivotally supported. The trunk is fixed to the guide member (11) having a guide slot (12) extending in a substantially arcuate shape outwardly in the direction of the other mold frame B, and a guide member (11) penetrating the guide slot (12). Then the operating rod (2)
And a connecting rod (13) mounted along the connecting member (6) so as to bridge the connecting members (6).