KR102038652B1 - Safety device for hoisting forms for construction and form having the same - Google Patents

Abstract

The present invention relates to a safety device for hoisting installed on a form. The safety device comprises: a lifting member installed on a hoisting ring provided on a form body, and held on a hook by hoisting a hook of a crane hung on the hoisting ring, to be initially lifted within the hoisting ring, and formed to be able to lift with respect to the form body; a cam part having a first contact surface, and formed on the lifting member to be able to lift together therewith according to the initial lifting of the lifting member; a cover part having a second contact surface making contact with the first contact surface, and formed to be able to rotate vertically with respect to the form body to be lifted by the force transmitted to the second contact surface during the initial hoisting of the lifting member such that anchor bolts can be exposed; and a connection member having one end coupled to the cover part and the other end coupled to another cover part distanced from the cover part in a horizontal direction such that the cover part and the other cover part can be lifted at one time. Thus, the safety device can open the cover parts at the same time by the connection member, thereby enhancing safety.

Description

Safety device for lifting installed in formwork and formwork having same {SAFETY DEVICE FOR HOISTING FORMS FOR CONSTRUCTION AND FORM HAVING THE SAME}

The present invention relates to a lifting safety device installed in the formwork and a form having the same.

In the construction of a building, formwork is a temporary structure that cures and supports until it reaches the desired strength by pouring unconsolidated concrete to build a concrete structure.

In general, the formwork consists of a blocking board in contact with the unconsolidated concrete, and a brace, support strip, and long binding material for supporting it. Iron wires, bolts and tie members are also used to penetrate concrete. The blocking board is applied with a release agent in advance so that it can be easily removed after hardening. Formwork needs to be designed and constructed to have sufficient strength to support the load of concrete, and various formwork materials are used for this purpose.

Formwork can take many forms, depending on the main material or on the purpose or purpose of the construction. The gang form refers to a systemized formwork made by simplifying and increasing formwork so that assembly disassembly is not necessary. It is mainly used for building high apartments or buildings. These gangforms are large in size and heavy and are lifted by cranes. The main work element before lifting by the gang form crane is to secure the safety by hanging the lifting form of the gang form on the crane before completely removing the gang form. If the anchor bolt is dismantled when the lifting ring is not hung on the crane, the formwork will fall down the moment it is separated from the concrete, and an accident may occur. To this end, in order to prevent any dismantling of the final anchor bolts supporting the formwork to the hard concrete, an apparatus designed to allow tool access of the final anchor bolts after the lifting preparation by the crane is completed has been developed. By the way, the large formwork such as the gangform includes a lot of anchor bolts, there is a disadvantage in terms of cost and operation to install the lifting safety device on all of the target anchor bolts.

Related literature

Republic of Korea Patent No. 10-0892615 (2009.04.08. Notification)

Republic of Korea Patent Publication No. 10-2017-0096618 published on August 24, 2017

Republic of Korea Patent No. 10-0918970 (2009.09.29. Notification)

An object of the present invention is to provide a safety device for lifting and installed in the formwork having the opening and closing mechanism of the anchor bolt to reduce the use of members and materials for this, while allowing the various anchor bolts can be opened at the same time in preparation for lifting The purpose is to present a form.

The lifting safety device installed in the formwork related to the present invention is installed in the lifting ring provided in the formwork body, and is caught in the hook according to the lifting of the hook of the crane that is caught in the lifting ring. It is configured to be initially raised in, and is formed to be liftable with respect to the formwork body, the lifting member; A cam portion having a first contact surface and formed on the elevating member so as to be pulled together according to the initial lifting of the elevating member; It has a second contact surface in contact with the first contact surface, and is rotated up and down with respect to the form body so that the anchor bolt is exposed by being lifted by the force transmitted to the second contact surface during the initial lifting of the elevating member A cover portion formed to be capable of being formed; And a coupling member having one end coupled to the cover part and the other end coupled to another cover part disposed horizontally spaced from the cover part so that the cover part and the other cover part can be lifted at once. It may include.

As an example related to the present invention, the cover part includes a pair of pivot arm parts rotatably supported by a hinge with respect to the form body; A cover body part disposed between the pair of pivotal arm parts; And a fastening part formed to couple the connection member.

As an example related to the present invention, the second contact surface may be formed on the pivot arm.

As an example related to the present invention, the cover body portion and the connecting member may be formed so that the cover portion can be rotated downward by its own weight when the cam portion moves to the lower position.

As an example related to the present invention, the lifting safety device installed in the formwork is provided between the cam part and the cover part, and the cover part is locked to the cam part in a closed position where the cover part covers the anchor bolt. A lock may be further included.

As an example related to the present invention, the locking part may include a locking protrusion extending from the cover part to the cam part; And when the cam portion reaches the lower position may include a locking groove for receiving the engaging projection is caught.

As an example related to the present invention, an end portion of the locking protrusion may include an upward tip, and the locking groove may be formed on a bottom surface of the cam part to accommodate the tip when the cam part moves downward.

Formwork associated with the present invention, the formwork body having a first lifting ring and a second lifting ring spaced in the horizontal direction; A first safety device disposed in the first lifting ring; And a second safety device disposed in the second lifting ring, wherein the first safety device and the second safety device include hooks of respective cranes that are hooked to the first lifting ring and the second lifting ring ( a lifting member configured to be hooked to the hook according to the lifting of a hook and be initially lifted in the first lifting ring and the second lifting ring, and configured to be liftable with respect to the form body; A cam portion having a first contact surface and formed on the elevating member so that it can be pulled together according to the initial lifting of the elevating member; It has a second contact surface in contact with the first contact surface, and is rotated up and down with respect to the form body so that the anchor bolt is exposed by being lifted by the force transmitted to the second contact surface during the initial lifting of the elevating member A cover portion formed to be capable of being formed; And one end coupled to the cover part included in the first safety device, and the other end coupled to the cover part included in the second safety device, wherein the cover part of the first safety device and the second safety device are connected to each other. It may include; a connecting member, formed so that the cover portion can be lifted at once.

As an example related to the present invention, the formwork having the lifting safety device, at least one intermediate anchor bolt disposed between the first lifting ring and the second lifting ring; And an intermediate cover part formed to open and close the intermediate anchor bolt by the connection member.

According to the lifting safety device and the form having the same installed in the form related to the present invention, when the lifting member is lifted according to the lifting of the hook, the cover portion having a second contact surface in contact with the first contact surface of the cam portion is rotated to the upper lifting In the manner in which the other cover portion connected by the connecting member is also rotated and lifted together, several anchor bolts can be opened at the same time in preparation for lifting. In this way, the cover part covering the anchor bolt disposed between the lifting ring and the lifting ring can be opened at once by the connecting member, thereby enhancing safety and reducing the use of a member or material therefor.

According to an example related to the present invention, the locking part is included between the cam part and the cover part, so that the cover part is held in a closed position with respect to the cam part in a closed position where the cover part covers the anchor bolt, so that an operator lifts the cover part at random and lifts the anchor bolt. Disassembly can be prevented at the source.

1 is a perspective view showing an example of the formwork 100 having a lifting safety device (200A, 200B) associated with the present invention.
FIG. 2 is a perspective view illustrating a state in which the safety device is operated by the hook H in the formwork 100 having the lifting safety devices 200A and 200B of FIG. 1.
Figure 3 is a side view of the lifting safety device associated with the present invention.
Figure 4 is a perspective view showing a state in which the lifting safety device associated with the present invention is closed.
5 is a perspective view showing the lifting safety device of Figure 4 is opened by the crane hook (H).
6 to 9 are operation state diagrams of the lifting safety device 200 related to the present invention,
6 is a closed state,
7 and 8 is a state in which the cam unit 240 is moving in the upper direction according to the lifting of the elevating member 210,
9 is an open state.

Hereinafter, a lifting safety device and a form having the same installed in the form related to the present invention will be described in detail with reference to the accompanying drawings.

It may be for a lifting safety device gang form (gang form) installed in the form related to the present invention. By increasing the size and simplicity, the construction of the next floor is facilitated by lifting the gang form that does not require assembly and disassembly.

1 is a perspective view showing an example of the formwork 100 having a lifting safety device (200A, 200B) associated with the present invention. According to FIG. 1, the formwork 100 includes a formwork body 101 provided with a first lifting ring 140A and a second lifting ring 140B. The formwork body 101 may include a panel portion 110, a horizontal reinforcement member 120 and a vertical reinforcement member 130 to provide assemblability and provide rigidity of the panel portion 110. The first lifting ring 140A and the second lifting ring 140B extend in the vertical direction along the double vertical reinforcing member 130.

An anchor bolt is installed between the panel unit 110 or the horizontal reinforcing member 120 and the vertical reinforcing member 130 to maintain the formwork attached to the concrete. Anchor bolts to be finally separated to dismantle the formwork after the double concrete is hardened, the tool access is blocked by the safety devices (200A, 200B) associated with the present invention so that they are not dismantled arbitrarily. Such safety devices 200A and 200B may include a cover part 250 for covering the anchor bolt. The anchor bolt that is finally separated may be positioned at the top with respect to the formwork body 101. Safety device (200A, 200B) in connection with the present invention is not only anchor bolt 150 is installed where the lifting ring (140A, 140B) is located, but also in the intermediate cover portion 350 which is operated by the connecting member (260) By opening the intermediate anchor bolt 151 located between the first salvage ring (140A) and the second salvage ring (140B) at once or block the tool access. At this time, unlike the cover portion 250 disposed on the first salvage ring 140A and the second salvage ring 140B, the intermediate cover part 350 does not need to include a cam part, which will be described later, of the connection member 260. Can be opened and closed by action.

FIG. 2 is a view illustrating a state in which a safety device is operated by a hook H in the formwork 100 having the lifting safety devices 200A and 200B of FIG. 1. When the safety devices 200A and 200B according to the present invention open the intermediate cover part 350 connected by the cover part 250 and the connection member 260 at once.

Hereinafter, the lifting safety device related to the present invention will be described in detail with reference to FIGS. Figure 3 is a side view of the lifting safety device, Figure 4 is a state in which the lifting safety device is closed, Figure 5 shows the lifting safety device is opened by the crane hook (H).

As shown in these figures, the lifting safety device may be provided with a lifting member 210, the cam portion 240, the cover portion 250 and the connecting member 260.

The elevating member 210 is installed on the lifting ring 140 and hooked on the hook H according to the lifting of the hook H of the crane hanging on the lifting ring 140 to be initially lifted in the lifting ring 140. It is configured to be. To this end, the upper end of the elevating member 210 is a slightly lower position than the upper end of the lifting ring 140, the hook (H) in the state in which the hook (H) is caught, the upper end of the elevating member (210) is preferentially It is raised until it reaches the top of the lifting ring 140. The movement of the elevating member 210 causes the movement of other members, that is, the cam portion 240 and the cover portion 250 and the connection member 260. The elevating member 210 is installed to be elevated in the vertical direction by a pair of elevating guides 213 installed at both ends of the pair of vertical reinforcing members 130. The front of the elevating guide 213 is open, and the open slot provides a moving space of the cam part 240. The lower end of the elevating member 210 may be coupled by a spring 215 to be restored to its original position when separated from the hook (H).

The cam part 240 has a first contact surface 241 and is formed on the lifting member 210 so as to be lifted according to the initial lifting of the lifting member 210. The cam portion 240 may be formed integrally with the elevating member 210 or assembled. The first contact surface 241 may have an inclination so as to easily lift the cover part 250 when raised. The inclination angle of the first contact surface 241 may be such that the cover portion 250 and the surface and the surface may be in close contact with each other when the cover portion 250 is closed.

The cover part 250 has a second contact surface 253 in contact with the first contact surface 241. At this time, the cover part 250 is lifted by the force transmitted to the second contact surface 253 during the initial lifting of the elevating member 210, the upper and lower with respect to the formwork body 101 so that the anchor bolt 150 is exposed. It is formed to be rotated to. Specifically, the cover part 250 is a cover body part disposed between the pair of pivotal arm 252 rotatably supported by the hinge 251 with respect to the formwork body 101 and the pivotal arm 252. 255 and a fastening part 257 formed to couple the connection member 260 to each other. The rotating arm part 252 may be formed in the rotating arm part 252 and transmits a force through contact with the cam part 240. The cover body portion 255 substantially serves to cover or open the anchor bolt 150. The cover body part 255 and the connection member 260 may be installed to allow the cover part 250 to be rotated downward by its own weight when the cam part 240 moves to the lower position. That is, when the elevating member 210 is separated from the hook (H), the elevating member 210 is restored to the original lower position by the spring 215, the cover 250 is the cover 250 and the connecting member It is rotated downward in the state lifted by the weight of 260. Lubricants or rust inhibitors for lubrication or rust prevention may be applied to the first contact surface 241 and the second contact surface 253.

In addition, as shown in FIG. 3, the first contact surface 241 and the second contact surface 253 may be provided with a roller or a ball on the first contact surface 241 or the second contact surface 253 in addition to the sliding method. It may also be configured to reduce noise.

As shown in FIG. 3, between the cam part 240 and the cover part 250, the cover part 250 is locked to the cam part 240 in a closed position where the cover part 250 covers the anchor bolt 150. 270 may be formed. The locking part 270 is a locking protrusion 271 extending from the cover part 250 to the cam portion 240, and a locking protrusion 271 is received and caught when the cam portion 240 reaches the lower position. The groove 273 may be included. At this time, the end of the locking projection 271 may include an upward tip 272, the locking groove 273 is a cam portion so that the tip 272 is accommodated when the cam portion 240 is moved downwards It may be formed on the bottom of the 240. Therefore, as shown in FIG. 4, the tip 272 of the locking protrusion 271 is caught even when the operator tries to lift the connecting member 260 or the cover 250 forward in the position where the cover 250 is closed. It is caught in the groove 273 and cannot be easily raised. On the other hand, when the cam portion 240 rises according to the lifting of the hook H of the crane caught by the elevating member 210, the tip 272 of the locking projection 271 is first separated from the locking groove 273, and then the cover is The part 250 is rotated upward as the cam part 240 rises to be in an open state.

Hereinafter, the operating state of the lifting safety device 200 related to the present invention will be described in detail with reference to Figs. FIG. 6 is a closed state, and FIGS. 7 and 8 are states in which the cam part 240 is moving upward in accordance with the lifting of the elevating member 210, and FIG. 9 is in an open state.

As shown in FIG. 6, when the elevating member 210 and the cam part 240 are positioned below, the cover part 250 covers the anchor bolt 150. At this time, as mentioned above, even if the operator tries to lift the connecting member 260 or the cover 250 forward, the tip 272 of the locking projection 271 is caught in the locking groove 273 It is not easy to lift.

As shown in Figure 7, the hook (H) is hooked to the lifting ring 140 and the elevating member 210, the hook groove portion 273 is also upward as the lifting member 210 and the cam portion 240 is raised in the beginning The tip 272 of the locking protrusion 271 is naturally separated from the locking groove 273 by being moved. That is, this process is superior to the action of the cam portion 240 is raised rather than rotating the cover portion 250.

As shown in FIG. 8, when the elevating member 210 continues to rise, the pivot arm part 252 is operated by the action between the first contact surface 241 of the cam part 240 and the second contact surface 253 of the pivot arm part 252. It rotates upwards, and consequently opens the lid part 250. 9 is the upper end of the elevating member 210 reaches the upper end of the lifting ring 140, the rotating arm 252 and the cover 250 is in a completely open state. In this state, when the lifting step of the formwork and the corresponding construction step of the formwork is completed in the next layer and the hook (H) is separated, the elevating member 210 is lowered to the original position by the spring 215, the cover portion ( 250 and the connecting member 260 is rotated downward by its own weight. At this time, the cover portion 250 and the connecting member 260 is rotated first, and finally the locking groove 273 is at the tip 272 of the locking projection 271 of the rotation arm portion 252 where rotation is almost completed. It will get locked and make a lock.

As such, when the elevating member 210 is lifted according to the lifting of the hook H, the cover part 250 having the second contact surface 253 contacting the first contact surface 241 of the cam part 240 rotates upward. As the other cover portion 350 connected by the connecting member 260 is lifted up and lifted up, the various anchor bolts 150 may be opened at the same time in preparation for lifting. In this manner, since the cover part 350 covering the anchor bolt 151 disposed between the lifting ring and the lifting ring can be opened at the same time by the connection member, it is possible to enhance the safety while reducing the use of the member or material therefor.

In addition, since the locking part 270 is included between the cam part 240 and the cover part 250, the cover part 250 is connected to the cam part 240 in a closed position where the cover part 250 covers the anchor bolt 150. Since it is held in a locked state, the operator can arbitrarily lift the cover part to prevent dismantling the anchor bolt 150.

The lifting safety device and the formwork having the same installed in the formwork described above are not limited to the configuration and method of the described embodiments. The above embodiments may be configured by selectively combining all or some of the embodiments so that various modifications can be made.

100: formwork with lifting safety device
101: formwork body 110: panel portion
120: horizontal reinforcing member 130: vertical reinforcing member
140, 140A, 140B: lifting ring 150, 151: anchor bolt
200A, 200B: Safety
210: lifting member 213: lifting guide
215: spring 240: cam portion
241: first contact surface 250, 350: cover portion
251: hinge 252: rotator rock
253: second contact surface 255: cover body
257: fastening portion 260: connecting member
270: locking portion 271: locking projection
272: tip 273: locking groove

Claims (12)

It is installed on the lifting ring provided in the form body, and is configured to be caught in the hook according to the lifting of the hook of the crane that is hooked to the lifting ring so as to be initially lifted in the lifting ring. A lifting member formed to be liftable;
A cam portion having a first contact surface and formed on the elevating member so as to be pulled together according to the initial lifting of the elevating member;
It has a second contact surface in contact with the first contact surface, and is rotated up and down with respect to the form body so that the anchor bolt is exposed by being lifted by the force transmitted to the second contact surface during the initial lifting of the elevating member A cover portion formed to be capable of being formed; And
One end is coupled to the cover portion, the other end is coupled to the other cover portion arranged horizontally spaced relative to the cover portion, the cover member and the other cover portion formed to be lifted at once; Including,
The cover part,
A pair of pivot arm portions rotatably supported by a hinge with respect to the form body;
A cover body part disposed between the pair of pivotal arm parts; And
Includes; fastening portion formed to couple the connecting member,
The second contact surface is formed on the pivot arm,
The cover body portion and the connecting member are formed so that the cover portion can be rotated downward by its own weight when the cam portion moves to the lower position,
Between the cam portion and the cover portion, the cover portion includes a locking portion for the cover portion to be locked to the cam portion in the closed position that covers the anchor bolt,
The locking portion,
A locking protrusion extending from the cover portion to the cam portion; And
When the cam portion reaches the lower position includes a locking groove for receiving the engaging projection is caught,
The end of the engaging projection includes an upward tip,
The locking groove is a lifting safety device installed in the formwork, formed on the bottom surface of the cam portion so that the tip is accommodated when the cam portion moves downward.
delete delete delete delete delete delete Formwork body provided with a first lifting ring and a second lifting ring spaced in the horizontal direction;
A first safety device disposed in the first lifting ring; And
A second safety device disposed in the second lifting ring,
The first safety device and the second safety device,
According to the lifting of the hook (hook) of each crane hooked to the first lifting ring and the second lifting ring is configured to be caught in the hook and the initial lifting in the first lifting ring and the second lifting ring And, the lifting member is formed to be elevated relative to the formwork body;
A cam portion having a first contact surface and formed on the elevating member so that it can be pulled together according to the initial lifting of the elevating member;
It has a second contact surface in contact with the first contact surface, and is rotated up and down with respect to the form body so that the anchor bolt is exposed by being lifted by the force transmitted to the second contact surface during the initial lifting of the elevating member A cover portion formed to be capable of being formed; And
One end is coupled to the cover part included in the first safety device, and the other end is coupled to the cover part included in the second safety device, and the cover part of the first safety device and the cover of the second safety device. Includes; the connecting member, formed to be lifted at the same time,
The cover part,
A pair of pivot arm portions rotatably supported by a hinge with respect to the form body;
A cover body part disposed between the pair of pivotal arm parts; And
Includes; fastening portion formed to couple the connecting member,
The second contact surface is formed on the pivot arm,
The cover body portion and the connecting member are formed so that the cover portion can be rotated downward by its own weight when the cam portion moves to the lower position,
Between the cam portion and the cover portion, the cover portion includes a locking portion for the cover portion to be locked to the cam portion in the closed position that covers the anchor bolt,
The locking portion,
A locking protrusion extending from the cover portion to the cam portion; And
When the cam portion reaches the lower position includes a locking groove for receiving the engaging projection is caught,
The end of the engaging projection includes an upward tip,
The locking groove is formed in the bottom surface of the cam portion so that the tip is accommodated when the cam portion moves downward, formwork having a lifting safety device.
The method of claim 8,
At least one intermediate anchor bolt disposed between the first lifting ring and the second lifting ring; And
Formwork having a safety device for lifting, further comprising; an intermediate cover portion formed to open and close the intermediate anchor bolt by the connecting member.



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