KR102641516B1 - Hoist device for raising and lowering items - Google Patents

Abstract

The present invention relates to a hoist device for lifting and lowering goods, comprising: a base; A driving unit consisting of an electric motor installed on the base and a driving pulley rotated by the electric motor; A lifting unit having a lifting pulley that is raised and lowered by the driving pulley and a lifting hook; an article support member suspended from the lifting hook to support the article; an expandable shield suspended from the base with a stretchable corrugated tubular body to shield the lifting unit from the outside; And it can be achieved by a hoist device including an opening shielding member provided to shield the downward opening of the telescopic shield and having a through hole that allows connection between the lifting hook and the article support member. According to this, in a situation where the product support member is suspended and connected to the lifting hook, when the telescopic shield shields the lifting unit, the telescopic shield does not rotate in conjunction with the rotation of the product support member due to the opening shield member, so it expands and contracts despite the rotation of the product support member. The shield is not distorted or damaged.

Description

Hoist device for raising and lowering goods {HOIST DEVICE FOR RAISING AND LOWERING ITEMS}

The present invention relates to a hoist device used to transport or unload goods by lifting them.

A hoist device is a device for lifting and lowering goods and consists of a driving unit that winds a wire and a lifting hook that rises and lowers according to the winding of the wire. When the hoist device operates, foreign substances such as lubricant, debris, rust, etc. often fall and come into contact with the goods. In particular, when lifting chemicals, there is a risk that dangerous situations such as fire or explosion may occur due to contact between foreign substances and chemicals.

Accordingly, there was an attempt to isolate falling foreign substances by wrapping wires, etc. with an elastic shield such as a bellows. However, the lifting hook is sometimes suspended with a product support member that can stably hang and elevate items such as ton bags. However, if the telescopic shield is fixedly connected to the product support member to isolate foreign substances, there may be a problem if the product support member does not rotate during lifting. However, if it rotates, there is a problem that the elastic shield is distorted and damaged in conjunction with the rotation of the product support member.

Therefore, when the telescopic shield is used in a situation where the item support member is suspended and connected to the lifting hook, requests for a hoist device that does not damage the telescopic shield even when the item support member rotates are increasing.

The purpose of the present invention is to prevent damage to the telescopic shield by preventing it from rotating in conjunction with the rotation of the item support member when the telescopic shield is used to prevent contact between foreign substances and the item in a situation where the item support member is suspended and connected to the lifting hook. The purpose is to provide a hoist device that can prevent.

The object of the present invention described above is a hoist device for lifting and lowering goods, comprising: a base; A driving unit consisting of an electric motor installed on the base and a driving pulley rotated by the electric motor; A lifting unit having a lifting pulley that is raised and lowered by the driving pulley and a lifting hook; an article support member suspended from the lifting hook to support the article; an expandable shield suspended from the base with a stretchable corrugated tubular body to shield the lifting unit from the outside; And it can be achieved by a hoist device including an opening shielding member provided to shield the downward opening of the telescopic shield and having a through hole that allows connection between the lifting hook and the article support member.

According to this, in a situation where the product support member is suspended and connected to the lifting hook, when the telescopic shield shields the lifting unit, the telescopic shield does not rotate in conjunction with the rotation of the product support member due to the opening shield member, so it expands and contracts despite the rotation of the product support member. The shield is not distorted or damaged.

It further includes a rotation support member provided between the opening shield member and the article support member to support each other so as to enable relative rotation about an axis perpendicular to the lifting pulley.

If the rotation support member is provided in this way, it is possible to more easily block the interlocked rotation of the elastic shield with respect to the rotation of the article support member.

The flexible shielding part is made of a material that allows at least some areas to see through.

According to this, workers can easily identify failures occurring in the lifting unit through the telescopic shield, thereby preventing safety accidents and improving ease of maintenance.

The elastic shield includes a plurality of shape-maintaining members arranged in a ring shape at predetermined intervals in the longitudinal direction of the corrugated tubular body.

According to this, expansion and contraction of the expansion and contraction portion becomes smooth, and distortion damage can be more easily prevented.

It includes a detection sensor that detects the expansion/contraction position of the expansion/contraction shield, and a control unit that controls the electric motor to prevent the lifting pulley from rising when the expansion/contraction position of the expansion/contraction shield reaches the maximum contraction position.

According to this, it is possible to prevent compression damage of the expandable shield at the maximum contraction position of the expandable shield.

According to the present invention, when the elastic shield is used to prevent contact between foreign substances and goods in a situation where the product support member is suspended and connected to the lifting hook, the elastic shield is interlocked with the rotation of the product support member to prevent rotation of the product support member. Despite this, it is possible to provide a hoist device in which the elastic shield is not distorted or damaged.

Figure 1 shows a raised state of a hoist device according to an embodiment of the present invention.
Figure 2 shows the lowering state of the hoist device of Figure 1.
Figure 3 is a front view of the hoist device of Figure 1.
Figure 4 is a side view of the hoist device of Figure 1.
Figure 5 is a plan view of the article support member and the opening shielding member of Figure 1.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. This is intended to provide a detailed description so that a person skilled in the art can easily carry out the invention, and as such, the technical idea and scope of the present invention are not limited.

Figure 1 shows a raised state of the hoist device 1 according to an embodiment of the present invention, Figure 2 shows a lowered state of the hoist device 1 of Figure 1, and Figure 3 shows an embodiment of the present invention. It is a front view of the hoist device 1 according to , FIG. 4 is a side view of the hoist device 1 of FIG. 1, and FIG. 5 is a plan view of the article support member 30 and the opening shield member 50 of FIG. 1.

The hoist device (1) according to this embodiment is installed to hang on the rail (7) at the top of the workplace, and lifts and lowers heavy items (2) on behalf of the worker or transports the items (2) to a location desired by the worker. It is a device for The article (2) may include, but is not limited to, a large-capacity gunny bag such as a ton bag. Hereinafter, each configuration of the hoist device 1 will be described with reference to FIGS. 1 to 5.

The hoist device (1) has a base (4). The base 4 may be provided in a plate shape, and may be provided in the form of a box with one side open or all sides closed. The electric motor 11 of the driving unit 10 is installed in the base 4, and in addition to the electric motor 11, various configurations of the driving unit 10 may be installed in the base 4.

The base 4 is provided between the driving unit 10 and the lifting unit 20 and may have a base opening 15 through which the wire W passes. Additionally, the base 4 may include a base coupling member 14 such as a bolt to be firmly fixed to the drive unit 10.

The base 4 can be made of a light yet high-strength material. For example, it can be made of carbon fiber composite material as well as synthetic resin such as plastic. Carbon fiber composite materials include carbon fiber reinforced plastic (CFRP), carbon fiber reinforced ceramic (CFRC), and carbon fiber reinforced metal (CFRM). However, since it is not limited to this, it may be made of iron (Fe) or a non-ferrous metal composite material containing aluminum (Al), magnesium (Mg), etc.

The hoist device (1) has a drive unit (10) consisting of an electric motor (11) installed on the base (4) and a drive pulley (12) that is rotationally driven by the electric motor (11). The electric motor 11 receives power from the outside, generates rotational drive force, and transmits the rotational drive force to the drive pulley 12. The driving pulley 12 is driven in rotation and winds the wire W to induce the lifting and lowering unit 20, which will be described below.

The hoist device 1 includes a lifting pulley 21 that is raised and lowered by a driving pulley 12, and a lifting unit 20 having a lifting hook 22. The lifting pulleys 21 may be provided singly, but hereinafter, it is assumed that the lifting pulleys 21 are provided as a pair. A pair of lifting pulleys 21 may be connected to a wire W connecting the driving pulley 12 and the fixed pulley 13.

A pair of lifting pulleys 21 may be connected to each other by a horizontal lifting pulley axis C2 parallel to the Y-axis direction. A lifting pulley vertical axis (C3) is connected to the lifting pulley horizontal axis (C2) in parallel in the Z-axis direction, and a lifting hook (22) is provided on the lifting pulley vertical axis (C3). The lifting hook (22) and the lifting pulley vertical axis (C3) can be manufactured as one piece. The lifting pulley vertical axis (C3) may be rotatably connected to the lifting pulley horizontal axis (C2), or the lifting hook 22 may be rotatably connected to the lifting pulley vertical axis (C3).

The hoist device (1) has an article support member (30) suspended and connected to the lifting hook (22) to support the article (2). The article support member 30 can hang the article 2 and go up and down according to the lifting hook 22.

The hoist device 1 is a flexible corrugated tubular body suspended from the base 4 and has an expandable shield 40 that shields the lifting unit 20 from the outside. The telescoping shield 40 can expand and contract in the Z-axis direction, which is the elevating direction, as the elevating pulley 21 moves up and down while shielding the elevating unit 20. The elastic shield 40 may be implemented with bellows or the like. The elastic shield 40 may be made of Oxford, Urethane, Neoprene, Tarpaulin, etc., which have excellent durability to enable repeated expansion and contraction.

The hoist device (1) has an opening shielding member (50) provided to shield the lower opening (L) of the telescopic shielding portion (40). When the drive unit 10, the lifting unit 20, etc. operate to lift the product 2, foreign substances such as lubricant and debris may fall, but the telescopic shield 40 is suspended from the base 4 to lift the product 2. When the unit 30 is installed to be shielded and the lower opening (L) of the telescopic shielding part 40 is shielded with the opening shielding member 50, falling foreign substances are isolated within the telescopic shielding part 40 and are separated from the article (2). contact can be prevented.

The opening shielding member 50 includes a through hole 51 that allows connection between the lifting hook 22 and the article support member 30. When the article support member (30) rotates while being suspended and connected to the lifting hook (22) through the through hole (51), the lifting hook (22) also rotates, but the lower opening (L) of the telescopic shield (40) is shielded. The opening shielding member 50 does not rotate in conjunction with the rotation of the article support member 30 due to the through hole 51. Since the opening shielding member 50 does not rotate, the expandable shielding portion 40 also does not rotate.

In this situation, in the situation where the product support member 30 is suspended and connected to the lifting hook 22, the rotation of the expandable shield 40 is not linked to the rotation of the product support member 30, so the expandable shield 40 is distorted or damaged. It doesn't work.

According to various embodiments, the hoist device 1 is provided between the opening shielding member 50 and the article support member 30 to support each other so that relative rotation is possible about the axis C1 perpendicular to the lifting pulley 21. Includes a rotation support member (60). As an example, the rotation support member 60 includes an outer bearing groove 61 and an inner bearing groove 63 centered on the axis C1, and a ball bearing accommodated between the outer bearing groove 61 and the inner bearing groove 63 ( It can be implemented with a ball bearing system including 62). However, since it is not limited to this, the rotation support member 60 may be implemented as a roller bearing system.

The rotation support member 60 may be disposed on the lower surface in the Z-axis direction of the opening shielding member 50 and the upper surface in the Z-axis direction of the article support member 30. The outer bearing groove 61 may be connected to the article support member 30, and the inner bearing groove 63 may be connected to the opening shielding member 50, but are not limited thereto.

By providing the rotation support member 60 in this way, it is possible to more easily block the interlocked rotation of the elastic shield 40 with respect to the rotation of the article support member 30.

According to various embodiments, the item support member 30 includes a hanging shelf 32 on which a plurality of item hangers 31 are provided at symmetrical positions on the outer edge. In the case of the goods (2), a plurality of goods hooks (3) may be provided for the convenience of lifting and lowering, and the plurality of goods hooks (3) can be lifted and lowered while being hung on the plurality of goods hangers (31).

According to various embodiments, the product support member 30 is provided at the center of the hanging shelf 32 and includes a connection portion 33 connected to the lifting hook 22. As an example, the connection part 33 may be connected to the lifting hook 22 through the through hole 51 of the opening shielding member 50 from the center of the hanging shelf 32.

According to various embodiments, at least a portion of the stretchable shielding portion 40 is made of a transparent material. For example, the flexible shield 40 may be made of transparent urethane or transparent urethane vinyl so that a portion of the shielded lifting unit 20 is visible from the outside, but is not limited thereto.

According to this, workers can easily identify failures occurring in the lifting unit 20 through the telescopic shield 40, thereby preventing safety accidents and improving ease of maintenance.

According to various embodiments, the elastic shield 40 includes a plurality of shape maintaining members 41 arranged in a ring shape at predetermined intervals in the longitudinal direction of the corrugated tubular body. The shape maintaining member 41 may be made of stainless steel with excellent corrosion resistance, etc., but is not limited thereto. The number of shape maintaining members 41 and the spacing between the shape maintaining members 41 may be determined in various ways depending on the design method.

If the shape maintaining member 41 is used in this way, the expansion and contraction of the expansion and contraction shield portion 40 becomes smooth, and distortion damage can be more easily prevented.

According to various embodiments, the upper opening H of the flexible shield 40 may be fixed to the upper opening fixing part 42 extending radially from the base opening 15, and the lower opening H of the flexible shield 40 may be fixed to the upper opening fixing part 42 extending radially from the base opening 15. It can be fixed to the lower opening fixing part 43 extending radially from the opening shielding member 50 of the opening L. According to this, the shielding performance by the elastic shielding portion 40 can be further improved.

According to various embodiments, the hoist device 1 further includes a moving part 6 that can move along the rail 7. The moving part 6 may further include a moving electric motor that transmits rotational driving force to the wheel 8.

According to various embodiments, the hoist device 1 further includes a control unit 5 that controls the operation of each component. As an example, the control unit 5 may control the operation of the electric motor 11, a mobile electric motor, etc. That is, the control unit 5 can execute software to control at least one other configuration of the hoist device 1 and perform various data processing or calculations. For example, as at least part of data processing or operation, the control unit 5 stores commands or data received from other components in volatile memory, processes the commands or data stored in the volatile memory, and stores the resulting data in the non-volatile memory. You can save it.

The control unit 5 may be implemented as a circuit including a main processor such as a central processing unit, an application processor, or the like, or an auxiliary processor that can operate independently or together. The auxiliary processor can be set to use less power than the main processor or to specialize in designated functions. The auxiliary processor may be implemented separately from the main processor or as part of it. The control unit 5 may also be referred to as a circuit unit and may include a cable connected thereto for controlling at least one other component of the hoist device 1.

Referring again to FIGS. 1 and 2, the operating state of the hoist device 1 can be divided into a rising state and a falling state depending on the degree of lifting of the lifting pulley 21. For convenience of explanation, it is assumed that Figures 1 and 2 show the maximum rising state and the maximum falling state.

In the maximum elevation state as shown in FIG. 1, the elastic shield 40 is compressed to the maximum so that the length S in the Z-axis direction can be minimized. The hoist device 1 may include a detection sensor that detects the expansion and contraction position of the expansion and contraction portion, and the control unit 5 determines whether the expansion and contraction shield 40 is in the maximum contraction position based on the expansion position detected by the detection sensor. can be identified. The control unit 5 controls the electric motor 11 to prevent the lifting pulley 21 from rising in the Z-axis direction at the maximum contracted position of the telescopic shield 40.

According to this, compression damage of the expandable shield 40 can be prevented at the maximum contracted position of the expandable shield 40.

Conversely, in the maximum lowered state as shown in FIG. 2, the stretchable shield 40 is stretched to its maximum, so that the length S in the Z-axis direction can be maximized. The control unit 5 can identify whether the stretchable shield 40 is at its maximum stretch position based on the stretch position detected by the detection sensor. The control unit 5 controls the electric motor 11 to prevent the lifting pulley 21 from lowering in the Z-axis direction at the maximum extension position of the telescopic shield 40.

According to this, it is possible to prevent expansion damage of the expandable shield 40 at the maximum expansion position of the expandable shield 40.

Although the present invention has been described in detail through preferred embodiments above, the present invention is not limited thereto and may be implemented in various ways within the scope of the patent claims.

1: Hoist device
2: Goods
3: Item hook
4: base
5: Control unit
10: Drive unit
20: Elevating unit
30: Product support member
40; New shielding part
50: Opening shielding member

Claims (5)

In the hoist device for lifting goods,
Base;
A driving unit consisting of an electric motor installed on the base and a driving pulley rotated by the electric motor;
A lifting unit having a lifting pulley that is raised and lowered by the driving pulley and a lifting hook;
an article support member suspended from the lifting hook to support the article;
an expandable shield suspended from the base with a stretchable corrugated tubular body to shield the lifting unit from the outside; and
It is provided to shield the downward opening of the telescoping shield, and includes an opening shielding member having a through hole that allows connection between the lifting hook and the article support member,
A hoist device further comprising a rotation support member provided between the opening shield member and the article support member to support each other so as to enable relative rotation about an axis perpendicular to the lifting pulley. delete According to paragraph 1,
The elastic shield is a hoist device in which at least a portion of the area is made of a transparent material. According to paragraph 1,
The elastic shield is a hoist device including a plurality of shape-maintaining members arranged in a ring shape at predetermined intervals in the longitudinal direction of the corrugated tubular body. According to paragraph 1,
A detection sensor that detects the expansion/contraction position of the expansion/contraction shield,
A hoist device comprising a control unit that controls the electric motor to prevent the lifting pulley from rising when the expansion position of the expansion shield reaches the maximum contraction position.

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