JP3032933B2 - Lifting method and lifting device for cranes such as container cranes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

A. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for raising a crane's head and a device for raising the same, and more particularly to a method for raising a head suitable for a container crane and a device for raising the lift.

(2) Prior Art Container cranes are used for loading and unloading operations from container vessels. However, with the enlargement of container vessels, repair work may be performed to further increase the lift. For this reason, the legs of the body of the container crane are added. Thus, conventionally, as one of the methods, it is usual to disassemble the container crane and to carry out additional work in a factory. For this reason, it takes time and effort, and not only the repair period becomes long, but also the transportation cost for transporting the dismantled members is increased, which is costly. In addition, as one work method of repairing at the site, the pedestal is separated while lifting the target crane with another crane, and then the cranes of the upper crane are moved, and then the skeleton is re-attached to the added pillar. The method of attaching is also adopted. However, according to this method, a large crane is required, and the phase of the pedestal to be added due to the lifting of the upper part of the crane body is greatly shifted, so that accurate alignment work becomes difficult. Lifting cranes is dangerous.

(3) Problems to be Solved by the Invention In view of the above-mentioned circumstances, the present invention employs a method of performing a repairing work at a site without laborious dismantling work,
It is an object of the present invention to provide a method of raising the lift of cranes and an apparatus for raising the crane, which does not require a large-scale lifting device and can perform an accurate centering operation.

B. Configuration of the Invention (1) Means for Solving the Problems The present invention employs the following configuration to achieve the above object.
The first invention relates to a method for raising the lift of cranes,
In a crane having a substantially vertical pillar at a corner of a skeleton, a lifting device having a lifting beam that can be held at least ascending while maintaining a level is installed inside the pillar, and the lifting beam is provided. And the pedestal are engaged with each other, and the pedestal is separated below the engagement portion. Thereafter, the lifting beam is lifted to lift the crane's skeleton, and is raised to the lifting portion of the crane's pedestal. It is characterized in that a pedestal is interposed. The second invention is an apparatus used for the method of raising the lift of cranes, which is used for the method of raising cranes having substantially vertical legs at the corners of the skeleton. Te, wherein disposed inwardly of the pillar of the skeleton portion having a beam lifting disposed horizontally with its ends engaging the pillar, the site of the lifting beam is raised It is lifted by a lifting device by taking a reaction force below the frame .

(2) Operation The lifting device is installed below the part where the cranes are cut off, that is, on the remaining part or base. In this embodiment, a mode for a remaining portion will be described. The separated portions of the cranes of the cranes are lifted up without any phase shift in the vertical and horizontal directions with respect to the remaining portions. The lifting operation is performed continuously or intermittently. In the embodiment, an operation mode of intermittent lifting is shown.

(3) Embodiment An embodiment of a method for raising the lift of cranes and an apparatus for raising the crane according to the present invention will be described with reference to the drawings. 1 to 10
FIG. 12 shows an example of application to a container crane as one embodiment. That is, FIGS. 1 and 2 show the entire configuration, and FIGS. 3 to 10 and 12 show the respective partial configurations.

(Container Crane K) First, a container crane as an object of the present embodiment will be described. In FIGS. 1 and 2, K denotes a container crane which takes the form of a so-called hammer-shaped crane and is installed facing the quay of a port. The container crane K
Is a frame 10 formed into a square tower with a steel frame
A trolley 102 is horizontally laid on an upper portion of the core 0, and a traveling carriage 104 is arranged on a lower portion of the core body 100. The trolley 102 extends toward the sea, and is used for delivery of container luggage to and from a container ship (not shown).

More specifically, the crane body 100
Are four pillars 110 at four corners and cross beams connecting the side surfaces thereof, that is, cross beams 112 arranged on both sides along the running direction and cross beams 1 arranged on both sides perpendicular to the running direction.
14 A diagonal member 116 is also arranged on the right angle plane. In addition, the horizontal beam members 112 are the lower and upper horizontal beam members 11.
2A and 112B. The cross beam 114 is disposed at an intermediate position. The crane skeleton 100 extends further upward and forms a roof-shaped skeleton upper part 118. This structure is peculiar to the present embodiment, and can take another mode in other container cranes.
Other large cranes are not limited to this mode.
The trolley 102 has its truss portion 10A having its I-shaped portion 102A fixed to the upper cross beam 112B of the crane body portion 100 and connected to the I-shaped portion 102A via a pin 120.
2B can be pulled up by the wire member 122.

As shown in FIG. 3, the traveling vehicle 104 comprises a main vehicle 130, an intermediate vehicle 132, and a lower traveling vehicle 136 having traveling wheels 134. That is, the main bogie 130 is disposed at the lower end of each pillar 110 of the crane body 100, the intermediate bogie 132 at both ends of the main bogie 130, and the lower traveling bogie 136 at both ends of each intermediate bogie 132,
Each is arranged. The carts 130, 132, and 136 are arranged in a superimposed manner to ensure smooth rotation of the traveling wheels 134 according to the curvature of the traveling rail. Thus, a traveling rule R is laid at the loading / unloading site of the harbor, and the container crane K of this embodiment travels on the traveling rule R by itself or another traveling.

(Raising Apparatus S) The raising apparatus S of the present embodiment uses the container crane K
It is used by assembling. That is, the lifting device S is provided with the pillars 110 of the frame 100 of the container crane K.
And on the lower horizontal beam member 112A. The lifting device S is provided upright on each of the cross beams 112A inside each of the pillars 110 of the container crane K, and has four guide columns 1 in which a lifting mechanism J is incorporated. A lateral truss 2 and a vertical truss 3 that rigidly connect between them, and a lifting beam 4 that is bridged between the guide posts 1 on the lateral surface and that is interlocked with a lifting mechanism J of the guide posts 1. ,including. On the other hand, a support member 6 linked to the raising device S is attached to the inner surface of the pillar 110 on the container crane K.

Hereinafter, the detailed configuration of each part of the raising device S will be described. Guide Posts 1 In this embodiment, each of the four guide posts 1 is fixedly installed on the lower cross beam 112A at a predetermined interval inside each leg 110 of the container crane K. That is, the guide column 1 has four element columns 10 rigidly fixed at their lower ends to the side surfaces of the lower horizontal cross member 112A integrally or detachably with welding / mounting bolts or other appropriate means, and a pair of opposing side surfaces. A brace material (stiffening material) 11 and a ceiling set 12 on the upper surface are arranged, and are assembled in a tower shape with a predetermined rigidity. The column 10 and the ceiling set 12 are mainly composed of an H-shaped steel, and the brace material 11 is mainly composed of an L-shaped steel. However, other suitable members can be freely used. The guide column 1 has a gate shape, and provides a moving area for lifting and lifting the lifting beam 4 in the inner space. The ceiling set 12 secures a moving area so as not to hinder as much as possible when the lifting beam 4 is lifted up most. On the side surface of the ceiling set 12 , mounting ribs 12a for mounting to the lateral truss 2 are arranged.

A lifting mechanism J peculiar to this embodiment is incorporated in the guide column 1. The lifting mechanism J will be described with reference to FIGS. The lifting mechanism J includes a support gantry 15 disposed above the guide column 1, a hydraulic jack 16 installed on the support gantry 15, a lifting girder 17 installed on the hydraulic jack 16, It is composed of two suspension plates 18 suspended in parallel from the lifting girder 17 and a receiving girder 19 fixed to the lower end of the suspension plate 18. Further, a guide structure 2 erected on the support base 15 for guiding the lifting girder 17 up and down.
0, and rearrangement pins 21 and 22 which are mounted on the suspension plate 18 and take a reaction force on the upper surfaces of the support base 15 and the lifting girder 17.
Note that the changing pins 21 and 22 are not mounted at the same time .

More specifically, the support base 15 functions as a so-called reaction table, and is fixedly installed on the upper surface of the guide column 1, that is, on the ceiling set 12. A groove 25 for receiving the suspension plate 18 is formed vertically through the center of the horizontal surface of the upper surface of the support base 15. Reference numeral 26 denotes a receiving plate for the rearrangement pins 21 fixed on the upper surface of the support base 15. The hydraulic jacks 16 are fixedly installed on concave portions formed at both ends of the support base 15. In this embodiment, one hydraulic jack 16 is provided at each end. However, two or more hydraulic jacks may be provided, or the hydraulic jack 16 may be provided at the center of the support base 15. The lifting girder 17 is a hydraulic jack 16
The hydraulic jack 16 is lifted by receiving the lifting action of the hydraulic jack 16. The lower surface holds a predetermined gap for inserting and removing the refilling pin 21 between the lower surface and the upper surface of the support base 15 in the lowermost state. A groove 27 having the same phase as that of the groove 25 is formed on the support base 15 in the hoisting girder 17.
Receiving plate 28 is provided. The guide structure 20 includes the support base 1
Lifting girder 1 with four vertical pillars 20a erected on 5
The horizontal beam 20b is fixed to the top of the vertical column 20a to maintain the rigidity of the whole by adopting a rigid frame structure. The above-mentioned support stand 15, lifting girder 17 and guide structure 20
Is made of a highly rigid steel material, and is actually constructed by assembling an H-section steel.

The suspension plate 18 is formed as a long flat plate, and has pin holes 30 through which the rearrangement pins 21 and 22 are inserted and removed at regular intervals in the longitudinal direction. The suspension plate 18
Are inserted into the grooves 25 and 27 of the support gantry 15 and the hoisting girder 17, and the rearrangement pins 21 and 22 are inserted into the pin holes 30. The receiving girders 19 are fixed transversely to the lower ends of the hanging plates 18 arranged side by side. Then, it was suspended between the suspension plates 18.
The lifting beam 4 is supported by the upper surface of the receiving girder 19 .
A projection 19a (see FIG.
6, a broken line) is projected, and when the receiving girder 19 is in the lowest position, it comes into contact with the upper surface of the horizontal girder member 112A to prevent collision of the lower end of the suspension plate 18, or abuts via the lifting beam 4. The function of positioning the supporting member 6 is achieved.

FIG. 11 shows another embodiment of the lifting mechanism J. That is, a conceptual configuration is shown here. As shown in the figure, the support gantry 15 and the lifting girder 17 are made of a simple flat plate, and when the support gantry 15 can be directly fixed to the column 10, the ceiling set 12 can be omitted.

The horizontal truss 2 and the vertical truss 3 The horizontal truss 2 (see FIG. 3) comprises a horizontal member 35 and a diagonal member 36, and two trusses are provided on the lower horizontal beam 112A of the container crane K. To prevent the guide posts 1 from falling between each other,
The guide posts 1 are rigidly connected to each other. The longitudinal truss 3 (see FIG. 4) retains its rigidity by itself and has opposing guide posts 1
Of the guide posts 1 are rigidly connected to each other. Each of the horizontal truss 2 and the vertical truss 3 is manufactured according to the specifications of the individual container crane K. For this reason, a block format in which the length is variable is preferable. In the raising device S, a rigid frame body is configured by the guide post 1, the horizontal truss 2, and the vertical truss 3,
Maintain a stable positional relationship.

Lifting Beam 4 The lifting beam 4 is formed of a horizontal beam having high rigidity. Then, the horizontal beam 112 of the container crane K
Fixedly laterally placed to receive digits 19 of the two guide columns 1 erected on A, both end portions protrude from the guide post 1, receiving
A shelf 40 is formed .

The supporting member 6 supporting member 6 is fixed to protrude toward the guide post 1 side to the inner surface of the pillar 110 of the container crane K, shelves its lower surface 45 forms a flat surface, the lifting beam 4 receives Contact 40. The support member 6 has a large rigidity and is firmly attached to the pillar 110. The mounting position of the support member 6 on the pillar 110 is maintained at an appropriate height from the upper surface of the horizontal beam 112A of the container crane K.

(Method of Raising the Lift) The method of raising the lift of the container crane of the present embodiment is performed as follows using the raising device S described above. Hereinafter, description will be given based on the operation procedure. 1 to 4 show a state before lifting, FIG. 10 shows a state during lifting, and FIG. 12 shows a state after lifting.

(1) As a preparatory operation, the container crane K on which the raising and repair is to be performed is moved to a predetermined position on the rail R, and the trolley 102 is connected to the wire member 122.
To guide the entire position of the center of gravity into the crane body 100.

(2) Thereafter, the guide posts 1 are set on the horizontal beam members 112A of the container crane K at predetermined intervals from the pillars 110. That is, the base of each element 10 is fixed to the lower horizontal beam member 112A , and the brace material 1
1. Assemble the ceiling set 12 on the upper part. (2-a) Thereafter, the lifting mechanism J is assembled to the guide column 1. That is, the support base 15, the hydraulic cylinder 16, and the lifting girder 17 are sequentially assembled, and the support base 1
The suspension plate 18 is inserted into the grooves 25 and 27 of the lifting girder 5 and the hoisting girder 17, and the changing pins 21 and 22 are mounted. Thereafter, the receiving girder 19 is attached to the lower end of the suspension plate 18. These can be freely assembled and disassembled.
The length is adjusted according to the specifications of the skeleton 100. Of course, it may be manufactured in advance for each unit. (2-b) Lower cross beam 112A of container crane K
The lifting beam 4 is bridged between the receiving girders 19 of the upper two guide columns 1.

(3) On the other hand, the support member 6 is fixed to the pillar 110 of the container crane K. With the above, the installation of the raising device S and the installation of the support member 6 are completed.

(4) The hydraulic jack 16 of the lifting mechanism J of the guide column 1 is actuated to lift the lifting beam 4, and the receiving shelves 40 at both ends of the lifting beam 4 are supported by the supporting members 6 of the column 110 of the container crane K. The lower surface 45 is brought into contact with a predetermined pushing force. Instead of this step, the lower surface of the receiving beam 19 is
A configuration may be adopted in which the lifting member 4 is placed in contact with the upper surface of A, and the support member 6 is attached with the lower surface 45 thereof in contact with the lifting beam 4 in this state. According to this state, no load is applied to the hydraulic jack 16 and it is convenient. In this case, the use of the receiving girder 19 with the projection 19a is effective.

(5) Each pillar 11 of the container crane K
0 is cut or separated at a predetermined location.

(6) The hydraulic jacks 16 of the lifting mechanism J in each guide column 1 are operated synchronously, and the suspension plate 18 is pulled up via the changing pins 22 of the lifting girders 17, whereby the receiving girders 19 and The lifting beam 4 is lifted, and the container crane K is lifted via the support member 6 that comes into contact with the lifting beam 4. In one stroke of the lifting process of the hydraulic jack 16, when the phases of the hole 30 of the suspension plate 18 and the upper surface of the support base 15 coincide with each other, the rearrangement pin 21 is inserted. Thereafter, the hydraulic jack 16 is slightly lowered, and receives a load via the changing pin 21.

(7) With the changing pin 22 pulled out, the hydraulic jack 16 of the lifting mechanism J is lowered to lift the unloaded lifting girder 17, and the upper surface of the lifting girder 17 and the suspension plate 1
The operation is stopped at the position where the phase of the hole 30 coincides with that of the hole 30, and then the rearrangement pin 22 is inserted into the hole 30.

(8) The above steps 6 and 7 are repeated, and the frame 100 of the container crane K is lifted to a predetermined height, that is, a head to be added.

(9) Pillar 110 of container crane K
In the section, the repair pedestal 110 to be added
A is connected and fixed (see FIG. 12).

(10) When the fixing of the repair pillar 110A is completed, the lifting device S is removed and dismantled. This procedure is performed in the reverse order of assembly.

(Operation and Effect of Embodiment) According to the method for raising the lift of the container crane of the present embodiment and the apparatus for raising the lift, the container crane K
In the lifting of the lift, only the part where the pillar 110 is to be added is separated, and the entire crane K is not dismantled, so that the labor and labor can be significantly reduced and efficient work can be performed. Further, the phase relationship between the horizontal projection and the vertical projection of the upper and lower portions of the crane body to be separated does not shift, the positional relationship is determined, and the work of arranging the pillar for raising the height can be easily performed. Further, the lifting operation in the lifting mechanism J is reliably performed by the pitch of the holes 30 of the suspension plate 18, and a safe lifting operation is ensured. In addition, the members forming the guide column 1 and the lifting mechanism J can be made of a general steel plate such as a flat plate or an H-shape, so that the structure is simple and economical. In the above embodiment, the method of raising the head of the container crane K has been described. However, reducing the head using the apparatus S of this embodiment is an easy application. That is, the lifting beam 4 is pulled up to the uppermost position or a predetermined height. In this state, the lifting beam 4 is engaged with the pedestal 110, a predetermined portion of the pedestal 110 is separated, and then the lifting beam 4 is intermittently lowered to remain. The pillars 110 are joined together.

The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the basic technical concept of the present invention. That is, the following embodiments are included in the technical scope of the present invention. The lifting mechanism incorporated in the guide column 1 is not limited to the lifting mechanism J shown in the present embodiment, and other lifting type lifting mechanisms can be adopted. For example, when the hanging plate 18 is replaced with a round steel bar (hanging bar), a lifting mechanism using a hall-type hydraulic jack holding the round steel bar is used. In addition, it is possible to adopt a continuous lifting mechanism without being limited to the lifting type lifting mechanism. Lifting beam 4 and pedestal 1
The engagement relationship with 10 is not limited to the bearing mode of the present embodiment, and does not exclude the suspension mode.

C. Effect of the Invention According to the present invention, in raising the lift of cranes, it is sufficient to separate only the portion where the pillars are to be added, and there is no dismantling work, so that it is possible to greatly reduce the labor required for the work, and efficient work Can be implemented. Further, the phase relationship between the horizontal projection and the vertical projection of the upper and lower portions of the crane to be separated does not shift, the positional relationship is determined, and the work of disposing the pillar for raising the height can be easily performed.

[Brief description of the drawings]

FIG. 1 is a side view showing an entire application example to a container crane which is an embodiment of a lifting method for cranes and a lifting apparatus of the cranes of the present invention (a view in the direction of arrow I in FIG. 2).

FIG. 2 is a view as seen in the direction of arrow II in FIG.

FIG. 3 is an enlarged view of a part III in FIG. 2;

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is an enlarged side view of the guide support (a view in the direction of arrow V in FIG. 6).

6 is a view in the direction of arrow VI in FIG. 5;

FIG. 7 is an upper side view of the guide support (a view in the direction of the arrow VII in FIG. 9).

8 is a view as seen in the direction of the arrow IIX in FIG. 7 (a view as seen in the direction of the arrow IIX in FIG. 9).

FIG. 9 is a sectional view taken along line IX-IX of FIG. 8;

FIG. 10 is a state diagram of an end of a lifting beam.

FIG. 11 is a configuration diagram showing another aspect of the lifting mechanism.

FIG. 12 is a side view of the pillar in a lifting state.

[Explanation of symbols]

K: crane, S: lifting device, J: lifting mechanism, 1
... Guide posts, 2 ... Transverse truss, 3 ... Vertical truss, 4 ... Lift beam, 100 ... Body, 110 ... Pedestal

Claims (2)

(57) [Claims] 1. A crane having substantially vertical pillars at corners of a skeleton body, wherein a lifting device having a lifting beam that can be raised at least while maintaining a horizontal position is installed inside the pillars. Engaging the lifting beam with the pedestal, disconnecting the pedestal below the engagement site, and then lifting the lifting beam to lift the crane's skeleton; A lifting column for a crane is lifted by interposing a column for raising the column in the lifting section. 2. An apparatus for use in a method of raising a crane having substantially vertical pillars at the corners of a frame, wherein the apparatus is disposed inside the pillars of the frame. A lifting beam having an end engaged with the pedestal portion and disposed horizontally, wherein the lifting beam is provided below the portion to be raised ;
A lifting device for a crane, wherein the lifting device is lifted by a lifting device by taking a reaction force to the portion .