KR102527864B1 - wireless automation hook device and crane device including the same - Google Patents

Abstract

An embodiment of the present invention provides a wireless automation hook device and a crane having the wireless automation hook device connected thereto, the wireless automation hook device comprising: a swivel connected to a crane wire and capable of rotating; a protective cover coupled to the lower end of the swivel; a power part located inside the protective cover and including a driving motor and a plurality of gears receiving a rotational force from the driving motor; a shaft having at least one end connected to the at least one gear and rotating in a vertical direction; a hook including a hollow coupling part penetrated and coupled by the shaft and a ring part, which is connected to the lower end of the coupling part and selectively performs an engaging operation and a releasing operation depending on the rotating direction of the shaft; and a combination part consisting of a pair of pressurizing nuts, which are in surface contract with both sides of the coupling part of the hook, and a pair of loosening preventing nuts, which are in surface contact with both sides of the pressurizing nuts, to fasten and combine the shaft and the hook. Therefore, a weighted object can be connected to a hook of a crane to be transported and can be released after transport without deploying a worker in a place where crane operation is required.

Description

Wireless automation hook device and crane device including the same {wireless automation hook device and crane device including the same}

The present invention relates to a wireless automated hook device for dropping and separating heavy objects when transporting heavy objects using a crane, and a crane device including the same.

In order to transport heavy objects in industrial sites such as construction works, cranes are used. When moving a heavy object, the worker connects the heavy object to the hook of the crane, uses the crane to set the heavy object at the desired location, and then separates the crane hook connected to the heavy object by the operator. will perform However, such a work method has a problem in that the operator is exposed to danger as much as the operator must be put in before and after the transport whenever heavy objects are transported. In particular, when a heavy object needs to be transported to a relatively high place or the work is performed under harsh external conditions such as temperature, the risk and difficulty accompanying the heavy object transport work increases.

Accordingly, there is a need for a method of connecting a heavy object to a hook of a crane, transporting it, and then disassembling it again without putting a worker into a place where crane work is required.

Korean Patent Registration No. 10-0812574, which is a prior art document, 'Hook Device for Dropping and Separating Heavy Materials' (hereinafter referred to as 'Prior Art 1') is a technology that makes it easy to drop or separate heavy objects connected to hooks. It is about. More specifically, in the prior art, when a heavy object is to be dropped, when the fixing means is released by pulling the operating rope, the hook is configured to be separated from the heavy object while rotating.

Republic of Korea Patent Publication No. 10-1301629 'automatic hook device for ships' (hereinafter referred to as 'prior art 1'), when a lever is rotated clockwise, the end of the ring fixing part corresponding to this is rotated in the lever guide groove of the hook. It moves from one side to the other side, and the hook is rotated counterclockwise while receiving the elastic restoring force of the elastic member through the ring fixing part, and the chain of the lifeboat is released from being caught in the hook, so that stable separation is achieved. has been

However, in the case of prior arts 1 and 2, there is a problem in that an operator must be put into a place where an operation for dropping or separating a heavy object is required. Therefore, a hook device for dropping and separating an automated heavy object when transporting a heavy object using a crane is required.

The present invention has been made to solve the above problems, and relates to a wireless automated hook device for dropping and separating heavy objects when transporting heavy objects using a crane, comprising: a rotatable swivel; protective cover; power unit; shaft; hook; And it provides a wireless automation hook device having a coupling portion connecting the shaft and the hook, and a crane device including the same.

In the present invention, in a situation where a repetitive external force acts in a direction perpendicular to the axis of the shaft due to the operation of the drive motor in the hook device, the movement of a plurality of gears, and the movement of a heavy object, it can be uniformly distributed throughout the shaft, and furthermore, the hook By forming the fastening part into a curved surface shape, tightening and fastening by the corresponding double nut, designing the joint surface shape of the double nut, the outer diameter of the hook fastening part, the outer diameter of the pressure nut, and the outer diameter of the anti-loosening nut within a specific range. It is an object of the present invention to prevent rotational loosening and non-rotational loosening.

One embodiment of the present invention is connected to the crane wire and a rotatable swivel; a protective cover coupled to the lower end of the swivel; a power unit located inside the protective cover and provided with a driving motor and a plurality of gears receiving rotational force from the driving motor; a shaft at least one end of which is connected to the at least one gear and rotates in a vertical direction; a hook having a hollow fastening part penetrated by the shaft, and a hook connected to the lower end of the fastening part and selectively engaging and releasing according to the rotational direction of the shaft; and a pair of pressure nuts provided in surface contact on both sides of the fastening portion of the hook and a pair of anti-loosening nuts provided in surface contact on both sides of the pressure nut to fasten and couple the shaft and the hook. It provides a wireless automation hook device including a coupling part.

The protective cover may have a structure in which an upper end is coupled to a swivel connected to the crane wire, at least a part of the lower end is open, and both sides are spaced apart from each other.

The upper end of the protective cover is coupled to the swivel connected to the crane wire, at least a part of the lower end is open, and both sides may be symmetrically arranged in a spaced apart structure, and the power unit protects the plurality of gears. It may be symmetrically provided as a pair on both sides of the cover and connected to both ends of the shaft part, respectively.

The pair of pressure nuts may be formed in a complementary curved surface corresponding to both sides formed in a curved surface of the hook fastening portion in surface contact therewith.

The shaft includes a central portion in which a hook and a coupling part are located in a longitudinal direction; and side portions positioned on both sides of the center portion in the longitudinal direction, the center portion of the shaft includes a screw thread formed on an outer circumferential surface, and the shape of the screw thread is such that the hook is positioned in the longitudinal direction of the shaft. Both sides may be formed in a symmetrical direction based on the center.

The fastening part of the hook is tightened and coupled by surface contact with the coupling part, and may include a pressing part having a convex curved surface shape, and the pressing nut is complementary to the pressing part of the hook fastening part having a convex curved surface shape. It may include a concave curved surface-shaped contact portion that makes surface contact.

The outer diameter (OD _H ) of the fastening part of the hook is smaller than the outer diameter (OD _N1 ) of the pressure nut and larger than the outer diameter of the anti-loosening nut (OD _N2 ), and the inner diameter (ID _H ) of the fastening part of the hook is the The inner diameter of the pressure nut (ID _N1 ) and the inner diameter of the anti-loosening nut (ID _N2 ) may be the same.

Another embodiment of the present invention is a crane; It provides a crane device connected to a wireless automation hook device including a crane wire connected to the crane and the hook device connected to the crane wire.

According to the present invention, it is possible to connect a heavy object to a hook of a crane, transport it, and dismantle it again without putting an operator into a place where crane work is required.

In addition, in the present invention, there is an effect of preventing rotation / non-rotational loosening of the nut in a situation in which external force repeatedly acts in a direction perpendicular to the shaft axis due to the operation of the driving motor in the hook device, the movement of a plurality of gears, and the movement of a heavy object.

1 is a schematic cross-sectional view showing the front of a wireless automated hook device according to an embodiment of the present invention;
Figure 2 is a cross-sectional schematic diagram showing a side of Figure 1;
3 is a schematic cross-sectional view showing a wireless automated hook device according to another embodiment of the present invention.
4 is a schematic diagram showing a pressure nut, which is a schematic front view (a) of the pressure nut and a cross-sectional schematic view (b) in the AA direction.
5 is a schematic view showing a structure in which a hook, a pressure nut, and an anti-loosening nut are fastened, and is a schematic side view (a) of the fastened structure and a cross-sectional schematic view (b) in the BB direction.
6 is a schematic diagram showing an anti-loosening nut, which is a perspective view (a), a front view (b) and a cross-sectional schematic view (c) of the anti-loosening nut in the AA direction.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used in a meaning commonly understood by those of ordinary skill in the art to which the present invention belongs.

In the entire specification, when a certain part is said to "include" a certain component, it means that it may further include other components without excluding other components unless otherwise stated. In addition, singular forms also include plural forms unless specifically stated in the text.

In this specification, when a part such as a layer, film, region, section, plate, etc. is said to be “on” or “on” another part, this is not only when it is “directly on” the other part, but also when there is another part in the middle. Also includes

In the present specification, the outer diameter of the fastening part of the hook, the outer diameter of the pressure nut, and the outer diameter of the anti-loosening nut may mean the diameter of the outer circumference of each component, and FIG. 1 (wireless automation hook device according to one embodiment of the present invention) It may mean the largest diameter represented by each component in the cross-sectional schematic diagram showing the front), and the inner diameter of the fastening part of the hook, the inner diameter of the pressure nut, and the inner diameter of the anti-loosening nut may mean the diameter of the inner hollow circumference of each component 1 (a cross-sectional schematic diagram showing the front of a wireless automated hook device according to an embodiment of the present invention), which may mean the smallest diameter represented by each configuration, and which can be screwed into the center 410 of the shaft It may be formed in length.

The present invention provides a wireless automatic hook device according to an embodiment. 1 is a schematic cross-sectional view showing the front of a wireless automated hook device according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view showing the side of FIG.

Referring to Figures 1 and 2, the wireless hook device is rotatable swivel 100; protective cover 200; power unit 300; shaft 400; hook 500; and a coupling part 600 connecting the shaft 400 and the hook 500.

The upper part of the swivel 100 is connected to a crane wire (not shown) installed in the crane, and the lower part is connected to the protective cover 200. The wireless hook device of the present invention receives force for lifting a heavy object carried by a crane through the swivel. Meanwhile, the swivel may be formed in a structure capable of rotating in a horizontal direction (based on a wireless hook device).

The protective cover 200 has an upper end coupled to the swivel 100 connected to the crane wire, and a power unit 300, a shaft 400, a hook 500, and a coupling part 600 to be described later inside the protective cover is provided The protective cover may have a structure in which at least a part of the lower end is open and symmetrically arranged with both sides spaced apart. Here, the fastening part of the hook is concave at the lower end of the protective cover, and the hook hook part is exposed to the outside of the protective cover and is rotated in a vertical direction at a predetermined angle or more to control the hooking state and release state of the heavy object.

The power unit 300 is located inside the protective cover 200 and includes a driving motor 310 and a plurality of gears 320 receiving rotational force from the driving motor. The driving motor 310 may be operated through automated remote control by radio frequency. The plurality of gears 320 are connected to one end of the drive motor 310 and the shaft 400, and transmit rotational force generated from the drive motor to the shaft to move the shaft and the hook coupled thereto in a vertical direction (to be described later). It can be rotated based on the front of the wireless hook device).

3 is a schematic cross-sectional view showing a wireless automated hook device according to another embodiment of the present invention. Referring to FIG. 3, the power unit 300 has the plurality of gears 320 on both sides of the protective cover 200. It may be symmetrically provided as a pair and connected to both ends of the shaft part 400, respectively. Both ends of the shaft can simultaneously receive symmetrical rotational force through a plurality of gears, and thus, even if repeated external force acts in a direction perpendicular to the axis of the shaft due to the operation of the driving motor and the movement of the plurality of gears, such vibration and external force can be offset symmetrically, it is possible to prevent rotational loosening of the double nut (pressure nut and anti-loosening nut).

At least one end of the shaft 400 is connected to the at least one gear to rotate in a vertical direction, and the hook 500 coupled to the shaft 400 rotates together. The shaft 400 is formed in the shape of a cylinder, where the cylinder may mean a solid formed by rotation of a straight line in which the top and bottom 　 planes (two bottom surfaces) are 　 circles and are always parallel to a fixed axis. With the shaft provided in a symmetrical shape, external environmental conditions such as vibration generated inside the device, heat, and load and vibration of heavy objects can be uniformly distributed throughout the shaft, thereby improving the durability of the device. In addition, when the hook and the gear (part) are integrally formed, they are easily damaged as vibration, heat, heavy weight, etc. are concentrated on their contact parts, but it may be difficult to repair, and in the present invention, the hook is fixed to the shaft. It also has the advantage of being relatively easy to maintain.

The shaft 400 includes a central portion 410 in which the hook 500 and the coupling portion 600 are located in the longitudinal direction (axial direction); And it may be formed with a side portion 420 located on both sides of the center in the longitudinal direction.

The central portion 410 of the shaft includes a screw thread (not shown) formed on an outer circumferential surface, and the shape of the screw thread is symmetrical on both sides with respect to the center where the hook 500 is located in the longitudinal direction of the shaft 400. It may be formed, for example, based on the center where the hook is located, one side of the center of the shaft is formed with a leftward thread, and the other side of the center of the shaft is formed with a rightward thread, thereby responding equally to rotation in the same direction. (loosening and/or tightening). Therefore, since the double nuts (pressure nut and anti-loosening nut) located on both sides of the hook correspond equally even if vibrations generated inside/outside the device and heat and heavy loads are irregularly applied to the shaft, , Or wear of the joint surface between the pressure nut and the hook fastening part (to-be-fastened), denting of the to-be-fastened body, metal friction, and deformation due to temperature deformation, etc. proceed symmetrically, resulting in an effect of preventing non-rotational loosening.

The side portion 420 of the shaft may have a smaller outer diameter (thickness) than the center portion and may not be threaded, and the center portion 410 and the side portion 420 of the shaft have an outer diameter (thickness ratio) ratio, for example About 30 pi: 20 pi may be sufficient for a load of 2.5 to 3 ton, but the present invention is not limited thereto. Meanwhile, the side surface of the shaft may further include a spacer 430 on an outer circumferential surface in a circumferential direction, and the spacer may function as a part used when fixing other components or leaving a regular interval therebetween.

The hook 500 has an upper end formed of a hollow fastening part 510, and a hook part 520 is positioned at the lower end.

The fastening part 510 of the hook is formed in a hollow shape so as to be penetrated by the shaft 400 . In a state where the fastening part 510 is inserted into the cylindrical shaft 400, it is tightened and fastened by a double nut (a pressure nut and an anti-loosening nut) of the coupling part 600 to be described later, wherein the fastened shaft 400 And the hook portion 520 of the hook can be rotated in the vertical direction together (based on the wireless hook device).

The fastening part 510 of the hook is surface-contacted and tightened by the coupling part 600, and may include a pressing part 511 having a convex curved shape. The pressing portion 511 may be formed as a convex curved surface in an outward direction of the fastening portion 510 of the hook. When the surface of the pressing part 511 is formed as a curved surface, it tends to be somewhat uniformly deformed (expansion/contraction) in the radial direction of the fastening part during deformation (contraction, expansion) due to vibration or heat. Expansion/contraction of the fastening part of the hook can be effectively controlled by using the pressure nut and the anti-loosening nut to be described.

The hook part 520 of the hook is formed following the lower end of the fastening part 510, and selectively engages and releases functions according to the rotational direction of the shaft 400 to hold a heavy object in the hook 500. Let it hang or detach. Specifically, the ring part 520, when the swivel 100 and the hook 500 are positioned on a straight line as a reference (0 °), rotates the shaft to the rear in the vertical direction of the wireless hook device. When it is located at 90 ~ 100 °, preparations for hanging the heavy weight on the hook are completed, and the shaft and the hook are rotated to position the hook at 0 ° so that the heavy weight can be hung on the hook and transported. After completing the transport of the heavy object, the hook may be positioned at a rearward angle of 90 to 100° by rotation of the shaft again, and the heavy object may be released from the hook.

The coupling part 600 is composed of a pair of pressure nuts 610 and a pair of anti-loosening nuts 620, and has a function of fastening and coupling the shaft 400 and the hook 500. do.

4 is a schematic diagram showing a pressure nut 610, a schematic front view of the pressure nut (a) and a schematic cross-sectional view (b) in the AA direction, and FIG. 5 is a hook 500, a pressure nut 610 and an anti-loosening nut As a schematic diagram showing the structure in which 620 is fastened, a side schematic diagram of the fastened structure (a) and a cross-sectional schematic diagram in the BB direction (b), Figure 6 is a schematic diagram showing the anti-loosening nut 620, anti-loosening nut It is a perspective view (a), a front view (b) and a cross-sectional schematic view (c) in the AA direction.

4 to 6, the pressure nuts 610 are provided as a pair in surface contact on both sides of the fastening portion 510 of the hook coupled through the shaft 400, and similarly, the shaft It can be penetrated and coupled by. Subsequently, the anti-loosening nuts 620 are provided as a pair of surface-contacts on one side of the pair of pressure nuts 610, and similarly can be penetrated and coupled by the shaft.

The pressure nut 610 may include a contact portion 611 having a concave curved surface and complementary to the pressing portion 511 having a convex curved surface (hook fastening portion). Thus, since the joint area between the pressure nut and the hook fastening portion can be widened and the interfacial frictional force can be increased, the rotational loosening of the pressure nut can be prevented.

The anti-loosening nut 620 may be characterized in that a serration 621 is formed on a joint surface with the pressure nut 610 . The serrations 621, for example, form protrusions on the joint surface to increase interfacial frictional force, and have an effect of preventing the pressure nut from loosening from rotation in surface contact with the hook to which rotational moment is applied during operation of the wireless automated hook device. The serrations 621 may not be formed on the pressure nut 610 and may be formed only on the anti-loosening nut 620 . If formed on both the pressure nut and the anti-loosening nut, the double nut is not tightened, so it is preferable to form a protrusion (serration) on only one side of the anti-loosening nut.

The fastening part 510 of the hook may have an outer diameter (OD _H ) smaller than the outer diameter (OD _N1 ) of the pressure nut 610 and larger than the outer diameter (OD _N2 ) of the anti-loosening nut 620 . When the area of the fastening part of the hook not surrounded by the pressure nut and at the same time, the area larger than the outer diameter of the anti-flick nut among the fastening part of the hook are defined as the expansion part 513 of the fastening part of the hook, When designing the outer diameter of the fastening part of the hook, the outer diameter of the pressure nut, and the outer diameter of the anti-loosening nut within the range, contraction and expansion of the hook fastening part 510 can be induced in the direction of the expansion part 513 of the hook fastening part. Therefore, even if the fastening part of the hook is severely deformed due to contraction/expansion, etc., the deformation is directed toward the upper end, so that wear of the joint surface between the pressure nut and the hook fastening part (to be fastened), sinking of the fastened body, metal friction and temperature deformation, etc. It has the effect of preventing non-rotational loosening due to

Meanwhile, the inner diameter (ID _H ) of the fastening part of the hook may be the same as the inner diameter (ID _N1 ) of the pressure nut and the inner diameter (ID _N2 ) of the anti-loosening nut, so that the hook fastening part, the pressure nut and the anti-loosening nut may be the same. A nut is passed through together with the shaft and is easy to fasten.

The material of the pressure nut may be aluminum, and the material of the anti-loosening nut may be steel such as S45C. When an aluminum material is used as the pressure nut, it is possible to induce a change in contraction and expansion of the hook in the direction of the expansion part of the hook fastening part (diameter direction of the shaft), and on the contrary, it suppresses the change of the hook in the axial direction (longitudinal direction) of the shaft. Rotational loosening and non-rotational loosening of the nut can be prevented.

Another embodiment of the present invention is a crane; It provides a crane device connected to a wireless automation hook device including a crane wire connected to the crane and the hook device connected to the crane wire.

The crane refers to a mechanical device in which repetitive operations are performed within a certain work space for the purpose of hoisting and transporting heavy objects using a hook, etc., and types of cranes include overhead traveling cranes, gantry cranes, tower cranes, fixed cranes, There are elevating cranes, jib cranes, mobile cranes, and hoists.

The crane generally includes a foundation, a mast, a telescopic cage, a turntable, a driver's cab, and a jib, and a hook device connected to the jib by a crane wire may be installed. It can be responsible for carrying and moving heavy objects vertically and horizontally through motions of moving forward, backward, up, and down by suspending heavy objects on the hook device of the trolley installed in the jib, and through the overall rotation of the upper part of the crane.

The hook device is the same as described above, and the crane wire is connected to the jib of the crane and the swivel of the hook device, so that a heavy object can be moved vertically or horizontally by hanging on the hook device. The crane wire may be manufactured by collecting and twisting many wires drawn from materials such as carbon steel to make a strand and winding the strand around the core at a constant pitch, but the present invention It is not limited to this.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be manufactured in various different forms, and those skilled in the art to which the present invention belongs can understand the technical spirit of the present invention. However, it will be understood that it may be embodied in other specific forms without changing its essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

100: swivel 200: protective cover
300 (300'): power unit 310 (310'): drive motor
320 (320', 320”): gear 400: shaft
410: (shaft) central part 420: (shaft) side part
430: (shaft) spacer 500: hook
510: Hook fastening part 511: (Hook fastening part) Pressing part
513: (hook fastening part) expansion part 520: hook part of hook
600: coupling part 610: pressurized nut
611: (pressure nut) contact part 620: anti-loosening nut
621: (anti-loosening nut) serration

Claims (7)

A swivel connected to the crane wire and rotatable;
a protective cover coupled to the lower end of the swivel;
a power unit located inside the protective cover and provided with a driving motor and a plurality of gears receiving rotational force from the driving motor;
a shaft at least one end of which is connected to at least one gear among the plurality of gears and rotates in a vertical direction;
a hook provided with a hollow fastening part penetrated by the shaft, and a hook connected to the lower end of the fastening part and selectively engaging and releasing according to the rotational direction of the shaft; and
In order to fasten and couple the shaft and the hook, a pair of pressure nuts provided in surface contact on both sides of the fastening portion of the hook, and a coupling composed of a pair of anti-loosening nuts provided in surface contact on both sides of the pressure nut including wealth,
The fastening part of the hook is tightened and coupled in surface contact by the coupling part, and includes a convex curved pressing part,
The pressure nut includes a contact portion of a concave curved surface shape complementary to the pressing portion of the hook fastening portion of the convex curved shape, the wireless automation hook device. According to claim 1,
The protective cover has an upper end coupled to the swivel connected to the crane wire, at least a part of the lower end is open, and has a symmetrical structure with both sides spaced apart. According to claim 1,
The protective cover has an upper end coupled to the swivel connected to the crane wire, at least a part of the lower end is open, and has a symmetrical structure with both sides spaced apart,
The power unit is characterized in that the plurality of gears are symmetrically provided as a pair on both sides of the protective cover and are respectively connected to both ends of the shaft. According to claim 1,
The shaft includes a central portion in which a hook and a coupling part are located in a longitudinal direction; And it is formed with side parts located on both sides of the center in the longitudinal direction,
The center of the shaft includes a screw thread formed on an outer circumferential surface, and the shape of the screw thread is formed in a symmetrical direction on both sides based on the center where the hook is located in the longitudinal direction of the shaft. delete According to claim 1,
The outer diameter (OD _H ) of the fastening portion of the hook is smaller than the outer diameter (OD _N1 ) of the pressure nut and larger than the outer diameter (OD _N2 ) of the anti-loosening nut,
The inner diameter (ID _H ) of the fastening part of the hook is the same as the inner diameter (ID _N1 ) of the pressure nut and the inner diameter (ID _N2 ) of the anti-loosening nut. crane;
A crane wire connected to the crane and
A crane device connected to a wireless automation hook device comprising the hook device of any one of claims 1 to 4 and 6 connected to the crane wire.

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