KR101800147B1 - Tower crane with safety means - Google Patents

Abstract

The present invention provides a tower crane and, more specifically, relates to a tower crane with a safety means, comprising: a predetermined base; a mask having a support frame extended upwards with respect to the base; a jig connected to an upper side of the mast in a direction crossing the mast, and having a transfer part transferring a transferred object; a crane block positioned above the base while interposing the mask between the crane block and the base; and a support member having one end interlinked with the crane block, and having the other end connected to the mask through a connection clip. The crane block supports each of both sides of the mast by the first support member, and the mast is connected to the base by a rotary pin. The crane block restricts rotation about the rotary pin of the mast and further comprises an operation unit positioned on the mask to allow a driver to board therein. The operation unit comprises a main body part and a guide part. The main body part has a transparent window positioned to move forwards and backwards. The guide part is installed in an exterior of the main body part, has a plurality of frames radially formed toward one area of an outer circumferential surface of an upper part thereof in a direction facing the outer window to allow the outer wind introduced from the outside to flow in a plurality of directions, and has a plurality of cut parts formed by being cut out in a polygonal shape to be tapered from the inside toward the outside in a normal direction or a reverse direction. As such, there is an effect to effectively secure safety and workability of a driver of a tower crane.

Description

Tower crane with safe means {TOWER CRANE WITH SAFETY MEANS}

The present invention relates to a tower crane provided with safety means, more specifically, to improve the safety of a worker and surrounding persons located within a working range of a tower crane in performing a tower crane operation, The present invention relates to a tower crane provided with safety means that can be secured together.

A tower crane is installed and operated to transport various materials such as reinforcing bars required for construction at the construction site to the target point. The major components of the tower crane are a mast that is vertically raised from the ground, a jib that is horizontally installed horizontally and horizontally above the mast, a trolley that horizontally moves on the jib and a hook block that is connected to the trolley, The hook is horizontally moved together with the trolley, and the cab is installed at the lower part of the jib to carry the lifting water while vertically moving. Although such a tower crane visually recognizes the operation of connecting the wire or band type binding member connected to the hook to the hook in a cab located at a high position, the tower crane performs a work such as a structure such as a hook block or the like Other obstacles cause a blind spot where the operator can hardly see the work site with eyes, which may cause a safety accident to the worker during the work and to the general people located within the working radius. For this reason, various means have been developed to prevent workers and ordinary people from being injured by a safety accident. However, existing means still have problems in effectively preventing safety accidents. In addition, there is a problem that the stability and the workability of the driver who operates the tower crane have been neglected.

Therefore, there is a disadvantage in that it is not easy to secure overall stability and workability in the operation of the tower crane.

Korean Patent Laid-Open No. 10-2009-0071228

The present invention provides a tower crane provided with safety means for securing workability and stability of a worker located within a working range of a tower crane in the operation of a tower crane and a driver of a tower crane, .

The present invention provides a tower crane comprising: a base; A mast having a support frame extending upward relative to the base; A conveying unit connected to the upper side of the mast in a direction crossing the mast and conveying the conveying object, and monitoring means for monitoring the conveying object; A crane block provided above the base with the mast therebetween; And a first support member having one end connected to the crane block and the other end connected to the mast by a connection clip, the crane block supporting both sides of the mast by the first support member, Wherein the crane block further includes a driving unit for restricting rotation of the mast about the rotation pin, the mast being mounted on the mast, A main body portion provided on the outer side of the main body portion so as to be able to move forward and rearward from the mast with a window; and an upper outer circumferential surface extending from a direction opposite to the outward wind to flow outwardly, A plurality of frames are formed radially so as to face one region, and a plurality of sections And a guide unit formed to taper in a forward direction or a reverse direction from an inner side to an outer side of the mast, wherein the operation unit is provided with safety means provided to be rotatable in a circumferential direction on the mast path.

The tower crane equipped with the safety means according to the present invention has the following effects.

First, it can effectively secure the safety of the workers and surrounding people in the field of tower crane work.

Second, the stability and operability of the tower crane driver can be effectively secured.

1 is a schematic view of a tower crane according to an embodiment of the present invention.
Fig. 2 is a view showing the load distribution unit of Fig. 1 in detail.
Fig. 3 is a view showing a structure in which the support frame of Fig. 1 is mounted on a base; Fig.
4 is a view showing a hull and a base of FIG. 2 inclined toward a first point with respect to a reference line.
FIG. 5 is a view showing an increased bearing force of the first balance holding portion in FIG.
Fig. 6 is a view showing the hull and base of Fig. 2 inclined toward the second point. Fig.
7 is a view showing an increased bearing force of the second balance holding portion of FIG.
8 to 9 are views schematically showing a tower crane according to another embodiment of the present invention.
10 to 14 are views schematically showing a tower crane according to another embodiment of the present invention.
15 is a view schematically showing a part of the configurations of a tower crane equipped with the monitoring means according to another embodiment of the present invention.
16 is a view schematically showing a part of the configurations of a tower crane equipped with the monitoring means according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view schematically showing a state in which a tower crane 10 is installed on an object 1 according to an aspect of the present invention, FIG. 2 is a view showing a load distribution unit 200 of FIG. 1 in detail, 3 is a view showing a structure in which the support frame 121 of Fig. 1 is mounted on the base 110. Fig. 1 to 3, a tower crane 10 according to an aspect of the present invention includes a crane body 100 and a load distribution unit 200.

The crane main body 100 includes a base 110 and a mast 120 extending upward from the base 110. The mast 120 is connected to the upper portion of the mast 120 along a direction crossing the mast 120. [ (Jib, 130). The base 110 is disposed on the object 1, and the load applied to the base 110 can be transmitted to the hull 1. A plurality of crane blocks 112 may be stacked on the base 110. The crane block 112 may position the center of gravity of the crane body 100 further downward. Here, the floating structure may be referred to as a floating structure having self-potential capability or a floating structure without self-supporting capability. For example, the floating structure may include a shuttle tanker, a container ship, a liquefied natural gas transport vessel, a liquefied gas transport vessel, a drill ship, FPSO, FSRU, and the like, but is not limited thereto. The crane block 112 is provided on the lower side of the crane body 100 to cancel the moment due to the weight of the conveyed object 2 (FIG. 6) conveyed along the upper jib 130, It is possible to prevent the crane body 100 from being rolled over. The crane block 112 may be an object having a large density, for example, a concrete block. Each of the crane blocks 112 disposed on both sides of the mast 120 can support the support frame 121 of the mast 120 via the support member 113. One end of the support member 113 is fixedly connected to the crane block 112 and the other end of the support member can be connected to the support frame 121 by the connection clip 114. The connection clip 114 may include a connection pin 115 for fixing the connection clip 114 and the support frame 121.

The crane block 112 supports both sides of the mast 120 so that the movement of the mast 120 in the direction of the rotation pin 150 to be described later can be restricted. The supporting member 113 and the connecting clip 114 may be provided on both sides of the mast 120, respectively. The mast 120 is fixed to the connection clip 114 by the connection pin 115 so that a clearance of a predetermined size can be formed at the connection point between the crane block 112 and the mast 120. This clearance freezes the movement of the mast 120 relative to the crane block 112 to some extent. As a result, excessive stress can be prevented from being generated in the support member 113 and the connection clip 114 due to excessive fixing between the mast 120 and the crane block 110. The mast 120 connects the base 110 and the jig 130 in the vertical direction and has a structure in which a plurality of support frames 121 are connected to each other. In this embodiment, the mast 120 has a structure in which four support frames 121 are connected in a rectangular shape, but the structure and the number of the support frames 121 can be changed.

Each support frame 121 may be connected to the upper side of the base 110 by a rotation pin 150. The support frame 121 is connected to the base 110 by the rotation pin 150 so that the support frame 121 or the mast 120 can have a structure free from rotation. Therefore, excessive stress due to restraining the rotation of the mast 120 between the lower end of the mast 120 and the base 110 can be prevented. However, not all of the support frames 121 constituting the mast 120 are rotatably connected by the rotation pin 150, and some of the support frames 121 may be connected by a welding method or the like. The mast 120 may be provided with a cab 122 and an operator may be installed in the cab 122 to operate the tower crane 10. The jibs 130 intersecting on the upper side of the mast 120 may be supported by a plurality of reinforcing wires 122 connected to the upper ends 121 of the mast 120. The jig 130 may be connected to a conveying part for conveying the conveying object 2 on one side with respect to the mast 120. The transfer section may include a hook 131 for gripping the object 2 to be transferred and a trolley 131 for transferring the hook 132 along the jib 130. A counterweight 133 may be connected to the jig 130 opposite the transfer unit. The counterweight 133 may be provided at the other end of the jib 130 to prevent the crane body 100 from being rolled over due to the action of a moment depending on the weight of the conveyed object 2 caught by the hook 132 . The structure of the crane body 100 is only an example, and the tower crane 10 according to one aspect of the present invention may have various structures other than the structure of the crane body 100 shown in the drawings.

Meanwhile, the load distribution unit 200 may be mounted on the lower side of the base 110 described above. In this embodiment, the 'equilibrium state' of the base 110 is a state in which the load applied to the entire base 110 and the magnitude of the supporting force are uniform, so that the base 110 is not inclined to one side, it means. The load distribution unit 200 has a function of maintaining the balance of the base 110 and dispersing the load transmitted from the base 110 to the hull 1 to be transmitted to various points of the hull 1. The load distributing unit 200 maintains the balance state of the base 110 so that the crane body 100 is mounted and operated on the hull 1 safely and the load is distributed to the hull 1 It is possible to prevent an excessive load from concentrating on one point of the load. The load transmitted from the base 110 to the hull 1 is determined by the weight of the crane body 100, the weight of the object 2 to be conveyed, and the external force applied by the wave energy to the hull 1 during the operation of the hull 1 (Hereinafter referred to as "operational load"). The load dispersing unit 200 may include a load balancing unit 210 and a load dispersing unit 220 so that the load applied to the base 110 can be uniformly dispersed over two stages. The load balancing unit 210 has a function of maintaining the equilibrium state of the base 110 and adjusting the load to be transmitted from the base 110 to the hull 1 uniformly. (Not shown). The load balancing portion 210 may include a first load balancing portion 211 and a second load balancing portion 212. The load balancing portion 210 may include a first load balancing portion 211, And a point at which the second load balancing unit 212 is provided is referred to as a second point. The load balancing unit 210 can be designed to have the same load applied to the first and second points of the base 110 when the load applied to the base 110 is not uniform and the base 110 is not balanced The tilting of the crane main body 100 can be prevented by making the base 110 in a balanced state when the base 110 is tilted because the tilting of the crane main body 100 does not occur, Can be prevented.

A pair of support frames 213 capable of supporting the base 110 and a plurality of reinforcing frames 214 mounted in an oblique direction in the staggered direction are connected between the load balancing units 210 . In the present embodiment, the load balancer 210 is provided on the left and right sides of the base 110, but the number of the load balancer 210 is not limited to two. The load balancing unit 210 may be a hydraulic cylinder, and a case where the load balancing unit 210 is a hydraulic cylinder will be described below as an embodiment of the present invention. However, the load balancing unit 210 is not limited to the hydraulic cylinder, and the load balancing unit 210 may be various devices capable of providing a vertical supporting force to the base 110. In another example, And a winch capable of raising the chain and the chain. The load distribution unit 200 according to the present embodiment may further include a balance sensing unit 230 capable of sensing the balance state of the base 110. [ The balance sensing unit may sense the balance state by measuring the inclination of the base 110, and may be, for example, a gyro sensor. The balance sensing unit 230 may be mounted on the base 110 and the operation of the load balancing unit 210 may be controlled according to the tilt information of the base 110 sensed by the balance sensing unit 230. Meanwhile, the balance sensing unit 230 may be a sensor capable of measuring the magnitude of the load applied to the first point and the second point, and may be provided at the first point and the second point, respectively.

The load dispersing unit 220 has a function of dispersing a load transmitted from the base 110 to the hull 1. The load dispersing unit 220 may be provided below the load balancing unit 210. The load distribution unit 220 may include a bracket 221 connected to the load balancing unit 210 and the hinge 215 and a plurality of support members 223 connected to the lower side of the bracket 221. A connecting plate 222 for connecting a plurality of support members 223 may be mounted on the lower side of the bracket 221. The connection plate 222 and the support member 223 can be bolted or welded together. At least two support members 223 may be provided on one load balancing portion 210, and eight support members 223 in total are provided in this embodiment. However, the number of the support members 223 can be changed. The support member 223 can have a triangular pyramid shape as a whole and has a structure in which the area contacted with the hull 1 is extended toward the lower side so that the load can be transmitted to a larger area of the hull 1. That is, the support member 223 can increase the area of the hull 1 supporting the crane body 100, so that the crane body 100 can be stably supported. Also, as the number of the support members 223 increases, the load is distributed and distributed to various points of the hull 1, so that an excessive load can be prevented from concentrating on one point of the hull 1. The operation and effect of the tower crane 10 according to one aspect of the present invention will be described below. The tower crane 10 operated by the object 1 to be operated in the sea receives the load of the conveyed object 2 conveyed by the tower crane 10 and the load of the crane body 100 itself as well as the operational load . In addition, there is a great risk that the tower crane 10 is overturned due to the action of the moment due to the structural characteristics of the mast 120 extending upwardly and the mast 120 crossing the long side of the jib 130. Further, there is a problem that such an excessive load is concentrated on one point of the hull 1 and the strength of the hull 1 is reduced. Therefore, in order to prevent such a problem, when the load is concentrated on one point of the base 110, the load balancing unit 210 can maintain the equilibrium state of the base 110 by increasing the supporting force with respect to the point.

4 is a view showing a state where the hull 1 and the base 110 of FIG. 2 are inclined toward the first point with reference to the reference line B, FIG. 5 is a view showing the first balance holding portion 211 of FIG. FIG. 2 is a view showing a state in which the support force of the first embodiment is increased. 4 and 5, when the hull 1 is tilted due to the operating load applied to the hull 1, the base 110 disposed on the hull 1 also tilts. The support frame 121 tends to rotate leftward (counterclockwise) around the rotation pin 150 as the base 110 is tilted to the left, Can be supported so as not to be rotated by the crane block (112) connected by the crane block (114). Therefore, the support frame 121 can maintain the state of extending upward from the base 110 without rotating on the base 110. [ The support frame 121 is connected to the base 110 via the rotation pin 150 so that the lower end of the support frame 121 is free to rotate so that the support frame 121 and the base 110 It is possible to prevent an excessive stress from being generated in the connecting portion. Meanwhile, when the base 110 is inclined, the balance sensing unit 210 mounted on the base 110 senses the inclination of the base 110, and the balance maintaining unit 210 can be driven according to the sensed result. In FIG. 4, since the first point is located lower than the second point, the piston of the first balance holding portion 211 mounted at the first point may be drawn out to the outside as shown in FIG. And thus the base 110 can be maintained in an equilibrium state. On the other hand, the state in which the piston of the second balance holding part 212 mounted at the second point is retracted may be maintained so that the balance state of the base 110 may be adjusted.

The load distribution unit 220 can increase the area of the hull 1 to receive the load by dispersing the load transmitted from the base 110 widely at various points of the hull 1. That is, the area of the hull 1 supporting the tower crane 10 can be increased, so that the tower crane 10 can be stably supported and the structural damage to the hull 1 can be reduced . FIG. 6 is a view showing a state in which the hull 1 and the base 110 of FIG. 2 are inclined toward a second point, and FIG. 7 is a view showing an increased bearing capacity of the second balance holding portion 212 of FIG. Fig. 6 and 7, when the conveying object 2 having an excessive weight is mounted on the hook 132 of the crane body 100, the crane body 100 can be inclined to the right, The load is concentrated on the second point of the second housing 110. This causes the base 110 to be out of equilibrium. As the base 110 is tilted to the right, the support frame 121 tends to rotate to the right (clockwise) about the rotation pin 150. However, the support frame 121 may be supported so as not to be rotated by the crane block 112 connected by the support member 113 and the connection clip 114. Therefore, the support frame 121 can maintain the state of extending upward from the base 110 without rotating on the base 110, and excessive stress can be prevented from being generated at the lower end of the support frame 121. Meanwhile, when the base 110 is inclined, the balance sensing unit 210 mounted on the base 110 senses the inclination of the base 110, and the balance maintaining unit 210 can be driven according to the sensed result. Specifically, when the load applied to the second point is larger than the load applied to the first point, the supporting force applied to the second point by the second load balancer 212 can be increased. That is, the piston of the second load balancer 212 can be adjusted to be drawn out. Therefore, the base 110 can maintain a balanced state. Accordingly, the load biased phenomenon caused by the tilting of the crane body 100 can be prevented. In addition, since the load transmitted from the base 110 to the hull 1 can be uniformly transmitted without being concentrated at any one point, structural damage to the hull 1 can be prevented from occurring.

8 to 9 are views schematically showing a tower crane according to another embodiment of the present invention. Hereinafter, the description will be focused on the technical features. 8 through 9, the tower crane includes a base 1110 disposed in the structure; A mast 1120 having support frames 11221b1 and 1221b2 extending upward relative to the base 1110; A jig connected to the upper side of the mast 1120 in a direction crossing the mast 1120 and equipped with a conveying portion for conveying the conveyed object; A crane block 1112 provided above the base 1110 with the mast 1120 therebetween; And a first support member connected to the crane block 1112 at one end and connected to the mast 1120 at the other end by a connection clip.

Here, the crane block 1112 supports both sides of the mast 1120 by the first support member 1113, the mast 1120 is connected to the base 1110 by a rotary pin, and the crane block 1112 And includes a driving unit 1122 on which a driver is to ride on the mart while restricting the rotation around the rotary pin of the mast 1120. Such a driving unit 1122 can be moved forward and backward on a predetermined base frame portion 11221C .

The operation unit 1122 includes a main body 11221a provided with a transparent window so as to be able to move back and forth forward and backward from the mast 1120 and a main body 11221a provided on the outside of the main body 11221a, A plurality of frames 11221b1 and 1221b2 are radially formed so as to face one region of the upper outer circumferential surface from a direction opposite to the draft, and a plurality of cut-out portions CH cut out in a polygonal shape extend from the inner side to the outer side And a guide portion 11221b formed to taper in a forward direction or a reverse direction. Here, the operation unit 1122 is provided so as to be rotatable in the circumferential direction on the mast 1120.

The second trolley 1131 further includes a base portion 113111 provided on the jib and a second trolley 1131 for moving the object from the base portion 113111 A first grip portion 11311 extending downward and primarily gripping a center portion of the upper surface of the object through the hook 1132, and a second grip portion 11311 extending downward from the base portion 113111 to secondarily grip the side portion of the object And a second grip portion 11312.

The second grip portion 11312 includes a pair of extending portions 11312a extending from the base portion 113111 and a moving portion 11312b being lifted or lowered from the extending portion 11312a and the moving portion 11312b, Is brought into contact with the object so as to surround at least a part of the object with the inner side. The extension portion 11312a is provided so as to be horizontally flowable from the base portion 113111 and the flow portion 11312b directly presses and grips the object based on the flow of the extension portion 11312a. The moving part 11312b is provided with a tilt part 11312t which is tilted at a predetermined angle from the lower end so that at least a part of the bottom part of the object is mounted.

The extension portion 11312a is provided so as to be horizontally flowable from the base portion 113111 and the flow portion 11312b directly presses and grips the object based on the flow of the extension portion 11312a. The moving part 11312b is provided with a tilt part 11312t which is tilted at a predetermined angle from the lower end so that at least a part of the bottom part of the object is mounted. The sliding portion 11312b is provided with a predetermined buffer member C on the inner side thereof which is in contact with the object. The moving part 11312b is provided with a plurality of predetermined first injection modules 1AP on the outer side thereof to cancel the vibration of the object on the jib.

The operation unit 1122 includes a control unit (not shown) for controlling the entirety of the tower crane, and a first vibration detection sensor EP for detecting the vibration state of the object is provided on the jib, Detects the vibration period and the degree of vibration of the object in a state in which the object is gripped by the moving part 11312b to generate vibration information, and the control unit controls the first injection module 1AP to cancel the vibration of the object based on the vibration information, And the first injection module 1AP is provided so as to be adjacent to each other along the longitudinal direction on the fluid portion 11312b.

A plurality of second injection modules 2AP are provided on the tilt part 11312t and the control part controls at least a part of the first injection module 1AP and the second injection module 2AP so as to cancel the vibration of the object based on the vibration information . A second vibration detection sensor is provided on the operation unit 1122. The second vibration detection sensor detects the vibration period and vibration degree of the object while the object is gripped by the movement unit 11312b to generate second vibration information , The controller drives at least a part of the first injection module 1AP and the second injection module 2AP to cancel the vibration of the object based on the first vibration information and the second vibration information.

The hook 1132 is provided on the hoisting block HB provided with the second trolley 1131 and the rope and the load measuring sensor 1132 for measuring the load value applied to the hook 1132 is provided on the hoisting block HB. The object is held primarily through the first grip portion 11311 and is secondarily gripped through the second grip portion 11312. The control portion controls the tilt portion 11312t based on the load value so that the load Tilt with a force equal to or greater than a predetermined value.

The interlocking member CP is interlocked with each crane block 1112 on one side and interlocked with each first support member on the other side. The interlocking member CP interlocks with each crane block 1112, .

The interlocking member CP is coupled to the receiving unit SP on one side and is interlocked with the crane block 1112 so that the crane block 1112 is connected to the crane block 1112. [ The receiving unit SP is provided with a receiving space for selectively receiving the crane block 1112 in the height direction.

The mounting unit 1LP further includes a mounting unit LP mounted so that the receiving unit SP and the interlocking member CP have elastic restoring forces therebetween. The mounting unit 1LP can move in a certain range on the base unit 113111 And is provided so as to be able to be fixed by the locking means LC on the base portion 113111. The locking means LC operates on the bottom surface of the base portion 113111 by a reverse rotation or a forward rotation, ).

A plurality of elevating units M1 for elevating or lowering the base portion 113111 are provided below the base 1110. When the mast 1120 is inclined on the base 1110, The tilt sensing sensor RS senses at least one of a tilt angle, a tilt direction, and a tilt velocity of the mast 1120, and generates a tilt information based on the tilt information. (M1).

10 to 14 are views schematically showing a tower crane according to another embodiment of the present invention. Hereinafter, the fall prevention unit provided on the mast will be described.

Fig. 10 is a perspective view showing a tower cranes drop preventing unit 2010 according to an embodiment of the present invention, Fig. 11 is a perspective view showing a mesh network 2020, Fig. 12 is a perspective view showing a frame crawler fall prevention unit 2010, (2064).

10, the drop prevention unit 2010 according to the present embodiment includes a mesh 2020, a frame assembly 2050, a pull string 2082, a frame connection member 2064, a connection cord 2084, (2086). 11, the mesh 2020 is generally rectangular in shape and has a rectangular opening 2070 formed at the center thereof and includes a mesh portion 2022, a frame insertion portion 2024, and a collet insertion portion 2028 ). The net portion 2022 is configured to have a plurality of strings interdigitated with each other. The inner circumferential surface of the mesh portion 2022 is integrally formed with the insertion tube 2028, and the outer circumferential surface is integrally formed with the frame insertion portion 2024 . The mesh portion 2022 is a rectangular net structure having a square opening 2070 formed at the center thereof, and the string insertion portion 2028 is linearly penetrated to one side. The frame inserting portion 2024 is made of a material having a circular section and flexible and not tearable so that a pipe can be inserted around the outer circumferential surface of the net portion 2022. Referring to Fig. 11, at a position coincident with the connector 2056 (see Fig. 12) of the frame assembly 2050,

A frame connecting member 2064 is inserted. The pull string insertion portion 2028 is a portion into which the pull string 2082 is inserted and includes a quadrangular portion 2025 provided on the circumferential surface of the opening 2070 and a rectilinear portion (See Fig. 10). Sectional shape is smaller than the frame inserting portion 2024 so that the pull string 2082 can be inserted. The frame assembly 2050, referring to FIG. 12, consists of four straight pipes 2052 and four 'a' elbow pipes 2054. The straight pipe 2052 and the elbow pipe 2054 are formed with two connectors 2056 to which the frame connecting member 2064 can be fastened after assembly. The cross-sectional diameter of the straight pipe 2052 is smaller than the cross-sectional diameter of the elbow pipe 2054, and both sides of the straight pipe 2052 are inserted into the inside of the elbow pipe 2054 and assembled.

The frame connecting member 2064 is constituted by a bolt 2053 and a shape of a nut 2056 and a circular portion having a hole 2065 of a head portion 2065 of the bolt 2053 and a connecting cord 2084 is inserted into the hole. The frame connecting member 2064 is inserted into the frame inserting portion 2024 of the mesh 2020 and then fastened to the connecting portion 2056 so that the frame assembly 2050 is not disassembled, And a connection cord 2084 connected to the pole 20102 is coupled (see Figs. 10 and 13).

The pull string 2082 and the connection string 2084 shown in Fig. 10 are made of wires, and the thickness of the word string is made thicker so that the strength of the connection string 2084 is larger than that of the pull string 2082. [ The coupling member 2086 shown in Fig. 10 is a member that connects two connection cords 2084 to the column 20102 of the tower crane. Hereinafter, the installation relationship of the drop prevention unit 2010 according to the above-described embodiment will be described in detail with reference to Figs. 10 to 13. Fig. First, each component of the straight pipe 2052 and the elbow pipe 2054 of the frame assembly 2050 and the pieces of the unfinished netting 2020 are taken to the construction site where the tower crane is located, The rectangular pipe 2052 of the frame assembly 2050 and the elbow pipe 2052 of the frame assembly 2050 are inserted into the frame inserting portion 2024 of the netting 2020 while the netting 2020 of the tower crane 20102 is inserted into the opening 2070. [ 2054 are inserted and assembled together. When the assembly is completed, the bolts 2053 are inserted into the holes 2026 of the mesh 2020 and the connecting portions 2056 of the frame assembly 2050, and the bolts 2053 are fastened to the nut 2066 on the opposite side. The pipe 2054 is fixed so as not to be separated. Further, the pulling string 2082 is loosely fitted to the pulling string insertion portion 2028 of the mesh 2020. When the net 2020 and the frame assembly 2050 are assembled and fixed in a state where the column 20102 of the tower crane is inserted into the opening 2070 as described above, the eight connection strings 2084 are connected. As shown in FIG. 10, one side of each connecting strap 2084 is knotted into the hole of eight bolts 2053 head portion 2065, and the other side is connected to the engaging member 2086. Two coupling straps 2084 connected to two bolts 2053 are connected to one coupling member 2086 so that a total of four coupling members 2086 are used to connect the drop prevention unit 2010 The column 2020 of the tower crane is connected to four corner portions of a predetermined height of the tower crane to be installed and then the pulling string 2082 inserted in the pulling string insertion portion 2028 is pulled to narrow the opening 2070, (2010), all the installation work is completed. Fig. 14 shows an embodiment in which a billboard 2090 is attached to the bottom of a mesh 2020. Fig. 14, the billboard 2090 may be attached to the bottom surface of the mesh 2020 by the same size as the mesh 2020, but may be larger or smaller than the area of the mesh 2020. [ The passengers can see the billboard 2090, thereby making it possible not only to prevent falls but also to effect the advertisement. Moreover, since the billboards lose their gaze to the admirably billboard, the passengers can naturally check the state of the fall prevention unit 2010 You can be careful.

15 is a view schematically showing a part of the configurations of a tower crane according to another embodiment of the present invention. Hereinafter, the description will be focused on the technical features. Referring to FIG. 15, an opening 3070 through which a column 30102 of a tower crane can be inserted is formed at a central portion, a mesh 3020 formed by a single body so as to surround the tower crane column 30102, A fall prevention unit 3010 including a frame assembly 3050 coupled with the frame 3020 to support the net 3020 and a connection cord 3084 connecting the frame assembly 3050 and the net 3020 to the tower crane, The net 3020 is formed such that its longitudinal section has a protrusion 30101 and a depression 30201. The protrusion 30101 has a semicircular buffer member 30111 and the depression 30201 has a tapered shape As shown in FIG. Here, a plurality of depressed depressions TH are formed on at least a part of the inner surface of the depression 30201.

16 is a view schematically showing a part of the configurations of a tower crane according to another embodiment of the present invention. 16, the cushioning member 40111 includes a sensing unit (not shown) for sensing an object introduced into the recessed portion 40201 and an object (e.g., a nut, bolt, etc.) 40301, 40302, 40303, and 40304 which are horizontally flowed to cover the upper portion of the recessed portion 40201 are provided. The sensing unit may be built in or external to the protrusion 40101 and may be operated alone or may be operated in conjunction with another sensing unit provided in the neighboring protrusion 40101. The recessed portion 40201 is formed on the inner circumferential surface with a recessed groove TH which is recessed inwardly on at least one region of the inner circumferential portion. At least one region M of the inner circumferential portion of the recessed portion 40201 is made of a magnetic material.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1: Hull
2:
100: Crane body
110: Base
120: mast
121: Support frame
113: support member
114: Connection clip
130: Jive
150: rotating pin
200: load distribution unit
210: Load balancing part
220:
223: Support member

Claims (10)

As a tower crane,
A predetermined base; A mast having a support frame extending upward relative to the base; A jig connected to an upper side of the mast in a direction crossing the mast and having a conveying portion for conveying the conveyed object; A crane block provided above the base with the mast therebetween; And a first support member having one end connected to the crane block and the other end connected to the mast by a connection clip, the crane block supporting both sides of the mast by the first support member, Is connected to the base by a rotation pin, the crane block restricting rotation about the rotation pin of the mast,
And a driving unit on which the driver is boarded,
The driving unit includes:
A main body portion provided on the outer side of the main body portion so as to be able to move forward and rearward from the mast with a transparent window; A plurality of frames formed radially so as to face one region of the outer circumferential surface, and a plurality of slits cut out in a polygonal shape are formed so as to taper in a forward direction or a reverse direction from the inner side to the outer side,
Further comprising a second trolley for flowing the object through the hook on the jib,
The second trolley includes:
A first grip portion extending downward from the base portion to primarily grip a center portion of an upper surface of the object through a hook and a second grip portion extending downward from the base portion, And a second grip portion for secondarily gripping,
Wherein the second gripping portion comprises:
A pair of extension portions extending from the base portion and a flow portion being lifted or lowered from the extension portion, wherein the flow portion is in contact with an object so as to enclose at least a part of the object with the inner side, The flow portion being adapted to directly press and hold the object based on the flow of the extension portion,
Wherein the flow portion includes a tilt portion that is tilted at a predetermined angle from a lower end thereof so that at least a portion of a bottom surface of the object is mounted, and the flow portion includes a predetermined buffer member on an inner surface,
The flow unit has a plurality of predetermined first injection modules on the outer side thereof to cancel the vibration of the object on the jib,
Wherein the operation unit includes a control unit for controlling the entire tower crane,
A first vibration detection sensor for detecting a vibration state of the object is provided on the jib,
The first vibration detection sensor senses vibration periods and vibration levels of an object in a state where an object is held by the fluid section to generate vibration information,
Wherein the control unit drives at least a part of the first injection modules to cancel the vibration of the object based on the vibration information,
Wherein the first injection module is provided with safety means provided adjacent to each other along the longitudinal direction on the moving portion. delete delete delete The method according to claim 1,
A plurality of second injection modules are provided on the tilt portion,
Wherein the control unit drives at least a part of the first injection module and the second injection module to cancel the vibration of the object based on the vibration information,
A second vibration detection sensor is provided on the operation unit,
The second vibration detecting sensor generates second vibration information by sensing the vibration period and the vibration degree of the object while the object is held by the moving unit,
Wherein the control unit is provided with safety means for driving at least a part of the first injection module and the second injection module to cancel the vibration of the object based on the vibration information and the second vibration information. The method of claim 5,
Wherein the hook is provided on the hoisting block provided with the second trolley and the rope,
A load measuring sensor for measuring a load value applied to the hook is provided on the hoisting block,
The object is primarily gripped through the first gripper and secondarily gripped through the second gripper,
Wherein the control unit controls the tilt unit to tilt with a force equal to or greater than the load value based on the load value,
And an interlocking member interlocked with the crane block on one side and interlocked with the first support member on the other side,
And the interlocking member is provided with safety means interlocked with each of the crane blocks to have an elastic restoring force. The method of claim 6,
A receiving unit which encloses at least a part of the crane block,
Further comprising a mounting unit, wherein the receiving unit and the interlocking member are mounted so as to have an elastic restoring force therebetween,
Wherein the interlocking member is coupled to the receiving unit on one side and is interlocked with the crane block,
Wherein the receiving unit is provided with a receiving space for selectively receiving the crane block in a height direction,
Wherein the mounting unit is provided so as to be movable in a predetermined range on the base portion and is provided with a safety means capable of being fixed by the locking means on the base portion. The method of claim 7,
A frame assembly formed with a body formed by a single body so as to surround the column of the tower crane and having an opening through which a column of the tower crane can be inserted in the central portion, a frame assembly supporting the net, Further comprising a drop prevention unit including a connection cord for connecting the tower crane to the tower crane,
A plurality of lifting and lowering units for lifting or lowering the base unit uniformly are provided below the base,
Wherein the tilt angle of the mast is detected by detecting at least one of a tilt angle, a tilt direction, and a tilt velocity of the mast when the tilt is generated on the base,
Wherein the control unit drives the elevation unit to cancel the tilt of the mast based on the tilt information,
Wherein the netting is formed such that the longitudinal cross-sectional shape has a protruding portion and a recessed portion,
And a cushion member having a semicircular shape is provided on the protruding portion, and the embedding portion is provided with a safety means formed of a tapered groove. The method of claim 8,
The cushioning member,
A sensing unit for sensing an object flowing into the insertion unit,
And a lid portion guided in a horizontal line so as to cover an upper portion of the recessed portion when an object flows into the recessed portion. The method of claim 9,
Wherein the depressed portion has an inner circumferential surface formed on the inner circumferential surface thereof with at least one recessed groove,
Wherein the penetration portion is provided with safety means that at least one region of the inner circumferential portion is made of a magnetic material.

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