KR20240142270A - shackle capable of automatically unlocking - Google Patents

Abstract

An automatic unlocking shackle according to one embodiment of the present invention comprises: a case having a shaft hole formed through it and a rod hole formed through it, orthogonal to the shaft hole; a shaft passing through the shaft hole and to which a load of a heavy object is applied; a rod passing through the rod hole and orthogonal to the shaft, the rod locking or unlocking the shaft to the case; a permanent magnet provided at an end of the rod; and an electromagnet provided in the case, facing the permanent magnet, and having the same polarity or the opposite polarity to that of the permanent magnet.

Description

Automatic unlocking shackle {shackle capable of automatically unlocking}

The present invention relates to an automatic unlocking shackle, and more particularly, to an automatic unlocking shackle capable of automatically unlocking a shaft to which a heavy load is applied with a simple structure.

A shackle is a device used in construction or industrial sites to connect a heavy load to the hook of a crane and enable the crane to transport the heavy load.

A typical shackle has a bolt that passes through the bottom of a horseshoe-shaped body, and one end of the bolt is fixed with a nut. In this type of shackle, a weight is attached to the bolt, and a crane hook is attached to the body. The shackle is first hung on the weight, and then the upper part of the shackle is attached to the crane hook.

When a worker hangs a weight on a shackle, he tightens a nut on the bolt to secure the bolt to the body. After that, he hangs the crane's hook on the body of the shackle and the crane moves the weight.

At this time, if the bolt and nut are not properly fastened and the bolt is not fixed to the body of the shackle, a safety accident such as the weight falling while moving may occur.

Meanwhile, after the movement of the heavy object is completed, the worker must move to the location of the heavy object and separate the bolt and nut. However, the time required to loosen the nut takes a long time, which delays the overall work speed, and there is also a risk of a safety accident occurring during the process of separating the nut.

Accordingly, there is a need to develop a shackle that can securely fix a bolt to a body while fastening or detaching a bolt carrying a heavy load to or from a body with a simple structure.

Korean Patent Publication No. 10-2086072 (Kim Jung-ho), 2020.03.02

The problem to be solved by the present invention is to provide an automatic unlocking shackle capable of automatically unlocking a shaft to which a heavy load is applied with a simple structure.

According to one embodiment of the present invention for solving the above problem, an automatic locking release shackle comprises: a case having a shaft hole formed through it and a rod hole formed through it, which is orthogonal to the shaft hole; a shaft which penetrates the shaft hole and to which a load of a heavy object is applied; a rod which penetrates the rod hole and is orthogonal to the shaft and locks or unlocks the shaft to the case; a permanent magnet provided at an end of the rod; and an electromagnet which is provided in the case, faces the permanent magnet, and has the same polarity or the opposite polarity to that of the permanent magnet.

In addition, the case may include an upper fastening portion formed by being bent at the upper portion and to which a rope of the crane is fastened; a lower fastening portion formed by being open at the lower portion and through which the shaft is exposed; and a wire fastening portion formed by being protruding from the case and to which a wire is fastened to connect the shaft to the wire.

In addition, the shaft may include a shaft body to which the load of the weight is applied and which penetrates closely into the shaft hole; a shaft head provided at an end of the shaft body and formed with the same diameter as the shaft body; and a recessed portion formed to be recessed between the shaft body and the shaft head and into which the rod is inserted when the rod locks the shaft.

Additionally, the recessed portion can be spaced apart from the load when the load unlocks the shaft.

Additionally, the diameter of the recessed portion may be formed smaller than the diameter of the shaft body.

In addition, the load may include a load body that penetrates closely into the load hole and locks the shaft to the case by restraining the depressed portion when positioned in the depressed portion; a release portion that is formed to be depressed in the load body and is spaced from the depressed portion when positioned in the depressed portion to unlock the shaft; a load flange that is provided in the load body and has a diameter larger than that of the load body; and an elastic member that is inserted into the load hole and contacts the load flange to apply elastic force to the load flange.

Additionally, the permanent magnet is provided at an end of the load body and can be opposed to the electromagnet.

In addition, if the polarity of the electromagnet is given the same polarity as that of the permanent magnet, the load body can come into contact with the recessed portion.

Additionally, if the polarity of the electromagnet is given a polarity opposite to that of the permanent magnet, the release portion can be located in the recessed portion.

Additionally, when the release member is positioned in the recessed portion, the load body can unlock the shaft.

According to an automatic unlocking shackle according to one embodiment of the present invention, when an electromagnet (40) is given an opposite polarity to a permanent magnet (35) and the electromagnet (40) attracts the permanent magnet (35), the rod (30) slides along the rod hole (14) to automatically unlock the shaft (20), so that the shaft (20) can be separated from the case (10).

FIG. 1 is a perspective view of an automatic unlocking shackle according to one embodiment of the present invention.
FIG. 2 is an exploded perspective view of an automatic unlocking shackle according to one embodiment of the present invention.
Fig. 3 is a cross-sectional view taken along line A-A' shown in Fig. 1 when the shaft (20) is locked.
Fig. 4 is a cross-sectional view taken along line B-B' shown in Fig. 1 when the shaft (20) is locked.
Fig. 5 is a cross-sectional view taken along line A-A' shown in Fig. 1 when the shaft (20) is unlocked.
Fig. 6 is a cross-sectional view taken along line B-B' shown in Fig. 1 when the shaft (20) is unlocked.

The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and the present embodiments are provided only to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The same reference numerals in each drawing represent the same components.

Hereinafter, an automatic lock release shackle according to one embodiment of the present invention will be described with reference to FIGS. 1 to 6.

FIG. 1 is a perspective view of an automatic locking release shackle according to one embodiment of the present invention, FIG. 2 is an exploded perspective view of an automatic locking release shackle according to one embodiment of the present invention, FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 1 when the shaft (20) is locked, FIG. 4 is a cross-sectional view taken along line B-B' of FIG. 1 when the shaft (20) is locked, FIG. 5 is a cross-sectional view taken along line A-A' of FIG. 1 when the shaft (20) is unlocked, and FIG. 6 is a cross-sectional view taken along line B-B' of FIG. 1 when the shaft (20) is unlocked.

Referring to FIGS. 1 to 6, an automatic unlocking shackle according to one embodiment of the present invention includes: a case (10) formed by penetrating a shaft hole (13) and forming a rod hole (14) orthogonal to the shaft hole (13); a shaft (20) penetrating the shaft hole (13) and to which a weight load is applied; a rod (30) penetrating the rod hole (14) and orthogonal to the shaft (20) and locking or unlocking the shaft (20) to the case (10); a permanent magnet (35) provided at an end of the rod (30); and an electromagnet (40) provided in the case (10), facing the permanent magnet (35), and having the same polarity or the opposite polarity to that of the permanent magnet (35).

The case (10) forms the exterior. The case (10) may be provided with the components described below.

A shaft hole (13) through which a shaft (20) is provided is formed in the case (10). The shaft hole (13) can be formed in the Y-axis direction as shown in Fig. 2.

A load hole (14) is formed through which a load (30) is provided in the case (10). The load hole (14) is orthogonal to the shaft hole (13). The load hole (14) can be formed in the X-axis direction as shown in Fig. 2.

The case (10) has a crane rope attached to the upper part and a shaft (20) provided at the lower part, so that a heavy object can be attached to the shaft (20).

Here, a case (10) according to one embodiment of the present invention includes an upper fastening part (11) formed by being bent at the upper portion and to which a rope of a crane is fastened; a lower fastening part (12) formed by being opened at the lower portion and to which the shaft (20) is exposed; and a wire coupling part (15) formed by being protruded from the case (10) and to which a wire (w) is coupled to connect the shaft (20) to the wire (w).

The upper fastening portion (11) is formed by folding at the upper portion of the case (10). In this case, the upper fastening portion (11) may be formed in a right angle, curved or bent form, but the embodiment is not limited thereto.

The lower fastening portion (12) is formed by opening at the lower portion of the case (10). The lower fastening portion (12) exposes a shaft (20) that is coupled to the case (10). In this case, a weight is applied to the exposed shaft (20) and a load is applied to the shaft (20).

The wire joint (15) is formed to protrude from the case (10). A wire (w) is joined to the wire joint (15). The wire (w) can be joined to the shaft (20). In this case, the wire joint (15) connects the shaft (20) to the wire (w), so that even if the shaft (20) is separated from the case (10), it is not lost from the case (10).

The shaft (20) is coupled to the case (10). The shaft (20) passes through the shaft hole (13). The shaft (20) can pass through the shaft hole (13) formed in the Y-axis direction as shown in Fig. 2. The shaft (20) can slide along the shaft hole (13). The shaft (20) can be separated from the case (10).

The shaft (20) is subjected to a load of a heavy object. In this case, the shaft (20) is exposed to the lower fastening portion (12), and the heavy object can be hung on the exposed shaft (20). Accordingly, the crane is fastened to the upper fastening portion (11) of the case (10), and the heavy object is fastened to the shaft (20) exposed to the lower fastening portion (12), and the load of the heavy object is applied.

A load (30) is coupled to the case (10). The load (30) passes through a load hole (14). The load (30) can pass through a load hole (14) formed in the X-axis direction as shown in Fig. 2. The load (30) can slide along the load hole (14).

The load (30) is orthogonal to the shaft (20). In this case, the load (30) can be arranged perpendicular to the shaft (20). The load hole (14) can be orthogonal to the shaft hole (13).

The load (30) can lock or unlock the shaft (20) to the case (10). In this case, the load (30) can lock the shaft (20) by restraining it to the case (10), or unlock it by releasing the restraint. This will be described later.

When the load (30) locks the shaft (20) to the case (10), the shaft (20) is firmly fixed to the case (10). In this case, when a load of a weight is applied to the shaft (20), the weight is firmly supported on the shaft (20), preventing the weight from falling.

When the load (30) unlocks the shaft (20) to the case (10), the shaft (20) can be separated from the case (10). In this case, the operator can separate the shaft (20) from the case (10).

As described in the prior art, when the crane completes transporting a heavy object, the heavy object must be separated from the shaft (20). At this time, the load (30) unlocks the shaft (20) from the case (10). In this case, the shaft (20) can be separated from the case (10), thereby separating the heavy object from the shaft (20).

A permanent magnet (35) is provided at the end of the rod (30). In this case, the permanent magnet (35) is inserted into the rod hole (14) together with the rod (30). The permanent magnet (35) can be moved along the rod hole (14) together with the rod (30).

The permanent magnet (35) is arranged to face the electromagnet (40) described later. At this time, the permanent magnet (35) is described as being arranged with the N pole facing the electromagnet (40), but the embodiment is not limited thereto.

An electromagnet (40) is provided in the case (10). The electromagnet (40) may be provided inside the case (10). The electromagnet (40) may be provided in the load hole (14). The electromagnet (40) is arranged to face the permanent magnet (35).

Power is supplied to the electromagnet (40). In this case, depending on the direction of the current applied to the electromagnet (40), the electromagnet (40) can exhibit a N pole or a S pole.

The electromagnet (40) may be given the same polarity or the opposite polarity to that of the permanent magnet (35). For example, when the permanent magnet (35) is an N pole, the electromagnet (40) may be given an N pole or a S pole depending on the direction of the applied current.

First, as shown in FIGS. 3 and 4, when the N pole is applied to the electromagnet (40), the electromagnet (40) is given the same polarity as the permanent magnet (35), so that a repulsive force is applied to the permanent magnet (35) to repel the permanent magnet (35).

In this case, the load (30) slides along the load hole (14) and is separated from the electromagnet (40). At this time, the load (30) locks the shaft (20) to the case (10). Accordingly, the shaft (20) can be firmly fixed to the case (10).

Meanwhile, as shown in FIGS. 5 and 6, when a S pole is applied to the electromagnet (40), the electromagnet (40) is applied with an opposite polarity to the permanent magnet (35), so that the electromagnet (40) applies an attractive force to the permanent magnet (35) to attract the permanent magnet (35).

In this case, the load (30) slides along the load hole (14) and approaches the electromagnet (40). At this time, the load (30) automatically unlocks the shaft (20) from the case (10). Accordingly, the shaft (20) can be separated from the case (10).

Here, a shaft (20) according to one embodiment of the present invention includes: a shaft body (21) to which the load of the weight is applied and which penetrates closely into the shaft hole (13); a shaft head (24) provided at an end of the shaft body (21) and formed with the same diameter as the shaft body (21); a recessed portion (25) formed to be recessed between the shaft body (21) and the shaft head (24) and into which the rod (30) is inserted when the rod (30) locks the shaft (20); a shaft stopper (23) provided at an end of the shaft body (21) and supported by the case (10); and a shaft handle (22) provided at an end of the shaft stopper (23) and having a wire (w) provided therein.

The shaft body (21) forms the body. A load of a heavy object is applied to the shaft body (21). The shaft body (21) can be exposed to the lower fastening portion (12).

The shaft body (21) is penetrated closely into the shaft hole (13). The shaft body (21) can slide relative to the shaft hole (13). In this case, the diameter of the shaft body (21) is formed to a size that is the same as or secures a fine tolerance with respect to the diameter of the shaft hole (13).

A shaft head (24) is provided at an end of the shaft body (21). The shaft head (24) is formed with the same diameter as the shaft body (21). The shaft head (24) penetrates closely into the shaft hole (13). The shaft head (24) can slide into the shaft hole (13).

A recessed portion (25) is formed between the shaft body (21) and the shaft head (24). The recessed portion (25) may be formed to be recessed. The recessed portion (25) may be formed to be recessed in a curved manner. In this case, the diameter of the recessed portion (25) is formed to be smaller than the diameter of the shaft hole (13). In addition, the diameter of the recessed portion (25) is formed to be smaller than the diameter of the shaft body (21). Accordingly, a rod (30) can be inserted into the recessed portion (25).

As shown in FIGS. 3 and 4, when the load (30) locks the shaft (20), the load (30) is inserted into the recessed portion (25). That is, the load (30) is inserted into the recessed portion (25) to restrain the shaft (20), thereby preventing the shaft (20) from moving in the shaft hole (13). In this case, the load body (31) described below can be inserted into the recessed portion (25). Accordingly, the shaft (20) is locked to the case (10).

As shown in FIGS. 5 and 6, when the load (30) unlocks the shaft (20), the recessed portion (25) is separated from the load (30). That is, the load (30) is separated from the recessed portion (25), thereby releasing the restraint of the shaft (20). In this case, the release portion (32) described below may be placed in the recessed portion (25). Accordingly, the shaft (20) is automatically unlocked from the case (10).

A shaft stopper (23) is provided at an end of a shaft body (21). The diameter of the shaft stopper (23) is formed to be larger than the diameter of the shaft hole (13). The shaft stopper (23) is supported on a case (10). The shaft stopper (23) is supported on a case (10) when the shaft body (21) penetrates the shaft hole (13), so that the recessed portion (25) is positioned at a position where it is inserted into a rod (30).

A shaft handle (22) is provided at an end of a shaft stopper (23). The shaft handle (22) is exposed on one side of the case (10). The shaft handle (22) is formed to protrude so that a worker can grip the shaft (20). As described above, when the shaft (20) is unlocked from the case (10), the worker can grip the shaft handle (22) to separate the shaft (20) from the case (10).

A wire (w) can be coupled to the shaft handle (22). The wire (w) can be coupled to a wire coupling portion (15) formed in the case (10). In this case, even if the shaft (20) is completely separated from the case (10), the wire (w) is coupled to the shaft handle (22), preventing the shaft (20) from being lost from the case (10).

Here, a rod (30) according to one embodiment of the present invention includes: a rod body (31) that penetrates closely into the rod hole (14) and locks the shaft (20) to the case (10) by restraining the recessed portion (25) when positioned in the recessed portion (25); a release portion (32) that is formed to be recessed into the rod body (31) and is spaced from the recessed portion (25) when positioned in the recessed portion (25) to unlock the shaft (20); a rod flange (33) that is provided in the rod body (31) and has a diameter larger than that of the rod body (31); an elastic member (36) that is inserted into the rod hole (14) and comes into contact with the rod flange (33) to apply elastic force to the rod flange (33); and a rod handle (34) that is formed to protrude from the rod flange (33).

The load body (31) forms the body. The load body (31) penetrates the load hole (14) so as to be in close contact with it. The load body (31) can slide in the load hole (14).

The load body (31) restrains the recessed portion (25) when positioned in the recessed portion (25). That is, as shown in FIGS. 3 and 4, when the load body (31) is positioned in the recessed portion (25), the load body (31) is inserted into the recessed portion (25) to restrain the recessed portion (25). In this case, the load body (31) locks the shaft (20) to the case (10).

A permanent magnet (35) is provided at the end of the load body (31). The permanent magnet (35) can slide along the load hole (14) together with the load body (31).

The permanent magnet (35) may be provided so as to face the electromagnet (40). At this time, the permanent magnet (35) is described as being positioned so that the N pole faces the electromagnet (40), but the embodiment is not limited thereto.

When the polarity of the electromagnet (40) is given the same polarity as that of the permanent magnet (35), the load body (31) comes into contact with the recessed portion (25).

That is, as described above, when the permanent magnet (35) is implemented as the N pole, when the N pole is applied to the electromagnet (40), a repulsive force is applied to the load body (31), so that the permanent magnet (35) is separated from the electromagnet (40). At this time, the load body (31) slides along the load hole (14), so that the load body (31) comes into contact with the recessed portion (25). Accordingly, the load body (31) restrains the recessed portion (25), thereby locking the shaft (20) to the case (10).

The release portion (32) is formed to be sunken into the load body (31). The diameter of the release portion (32) is formed to be smaller than the diameter of the load body (31).

When the polarity of the electromagnet (40) is given a polarity opposite to that of the permanent magnet (35), the release portion (32) is positioned in the recessed portion (25).

That is, as described above, when the permanent magnet (35) is implemented as the N pole, when the S pole is applied to the electromagnet (40), an attractive force is applied to the load body (31), and the permanent magnet (35) comes into contact with the electromagnet (40). At this time, the load body (31) slides along the load hole (14), and the release portion (32) is positioned in the recessed portion (25).

The release portion (32) is separated from the recessed portion (25) when positioned in the recessed portion (25). That is, as shown in FIGS. 5 and 6, when the release portion (32) is positioned in the recessed portion (25), the release portion (32) is separated from the recessed portion (25). In this case, the recessed portion (25) may be separated from the release portion (32), causing the shaft (20) to be separated from the load body (31).

When the release member (32) is positioned in the recessed portion (25), the load body (31) unlocks the shaft (20). As described above, when the release member (32) is positioned in the recessed portion (25), it is separated from the recessed portion (25), so that the shaft (20) can be detached from the load (30). Accordingly, the shaft (20) is detached from the load body (31), automatically unlocking the shaft (20).

A load flange (33) is provided on the load body (31). The load flange (33) is formed to have a diameter larger than the diameter of the load body (31). The load flange (33) can be inserted into the load hole (14). The load flange (33) is placed in a state of being inserted into the load hole (14) by a stopper washer (37) described later.

A stopper washer (37) is coupled to the load hole (14). The stopper washer (37) supports the load flange (33) and prevents the load flange (33) from being separated from the load hole (14).

The elastic member (36) is inserted into the load hole (14). The elastic member (36) is in contact with the load flange (33). In this case, an elastic member insertion groove (331) into which one end of the elastic member (36) is inserted may be formed in a sunken manner in the load flange (33). In addition, an elastic member mounting portion (141) into which the other end of the elastic member (36) is in contact may be formed in a stepped manner inside the load hole (14).

The elastic member (36) applies elastic force to the load flange (33). In this case, the elastic member (36) provides elastic force to the load flange (33) to push the load flange (33) toward the stopper washer (37). At this time, as described above, the stopper washer (37) supports the load flange (33) to prevent the rod (30) from being separated from the rod (30) hole.

The elastic member (36) can assist the repulsive force applied to the permanent magnet (35) when the load (30) locks the shaft (20), as shown in FIGS. 3 and 4.

In addition, when the battery (50) described later is discharged and the electromagnet (40) is not polarized, the elastic member (36) applies elastic force to the load flange (33) so that the load (30) locks the shaft (20). In this case, the elastic member (36) can basically function as a safety device that locks the shaft (20) to the load (30) and prevents a heavy object from falling from the shaft (20).

The load handle (34) is formed to protrude from the load flange (33). The load handle (34) allows the worker to move the load (30) within the load hole (14) by pushing the load handle (34).

As described above, when the battery (50) is discharged and the electromagnet (40) is not polarized, the elastic member (36) applies elastic force to the load flange (33) so that the load (30) locks the shaft (20). At this time, the user can push the load handle (34) to position the release portion (32) in the recessed portion (25) to unlock the shaft (20) manually.

Meanwhile, the case (10) may be equipped with a battery (50) that supplies power. The battery (50) supplies power to the electromagnet (40). The battery (50) may supply power so that the N pole or the S pole is applied to the electromagnet (40).

The control unit (70) is provided in the case (10). The control unit (70) can control the direction of the current so that the N pole or S pole is applied to the electromagnet (40) according to the operator's operation. The control unit (70) can be controlled by wired operation or wireless operation such as a remote control, but the embodiment is not limited thereto.

A button (71) may be provided on one side of the case (10). The operator can operate the button (71) to cause the control unit (70) to apply a N pole or a S pole to the electromagnet (40).

Another side of the case (10) may be equipped with an alarm unit (60). The alarm unit (60) can alert the user whether the shaft (20) is locked or unlocked. The user can determine whether the shaft (20) is locked or unlocked through the alarm unit (60) and unlock the shaft (20) after the transfer of the heavy object is completed.

Above, a person having ordinary skill in the technical field to which the present invention belongs will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

The scope of the present invention is indicated by the scope of the claims described below rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

10 : Case 20 : Shaft
30 : Rod 40 : Electromagnet

Claims (2)

A case formed by penetrating a shaft hole and forming a rod hole orthogonal to the shaft hole; a shaft penetrating the shaft hole and to which a weight load is applied; a rod penetrating the rod hole and orthogonal to the shaft and locking or unlocking the shaft to the case; a permanent magnet provided at an end of the rod; and an electromagnet provided in the case, facing the permanent magnet, and having the same polarity or the opposite polarity to that of the permanent magnet;
The shaft comprises a shaft body to which the load of the weight is applied and which penetrates closely into the shaft hole; a shaft head provided at an end of the shaft body and formed with the same diameter as the shaft body; and a recessed portion formed to be recessed between the shaft body and the shaft head and into which the rod is inserted when the rod locks the shaft;
The above load includes a rod body that penetrates closely into the rod hole and locks the shaft to the case by restraining the depressed portion when positioned in the depressed portion; a release portion that is formed to be depressed in the rod body and is spaced from the depressed portion when positioned in the depressed portion to unlock the shaft; a rod flange that is provided in the rod body and has a diameter larger than that of the rod body; and an elastic member that is inserted into the rod hole and contacts the rod flange to apply elastic force to the rod flange;
An automatic unlocking shackle which unlocks the shaft when the release member is positioned in the recessed portion.
In the first paragraph,
The above permanent magnet is provided at an end of the above load body, and the automatic locking release shackle is opposed to the above electromagnet.

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