JPS5924720B2 - Self-lifting drive disassembly equipment for tower cranes - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tower crane that forms a main pillar assembly by sequentially joining a plurality of individual main pillars via a self-lifting drive body.

Generally, the self-lifting drive body in this type of tower crane has an upper cylinder part and an upper cylinder part, and is equipped with a work stage, a hydraulic cylinder, a hydraulic drive mechanism for operating the hydraulic cylinder, etc., and a main column assembly. The self-lifting drive body is set on the topmost main column located at the top of the solid body, and it supports the crane head and moves upwards one by one, so it has a powerful driving force and is a dog in terms of weight and appearance.

Conventionally, such a self-lifting drive has been used for one tower crane.
Since the tower crane is operated with a heavy and bulky self-lifting drive body attached to the top of the main column assembly of the tower crane, which is equipped with a stand and is formed to a predetermined height, the stability of the crane is compromised. Moreover, it was extremely dangerous because heavy objects were placed at high places.

In order to eliminate such permanent installation, the present invention forms one fastening part on the inner periphery of the swivel ring seat to which the upper end of the self-lifting drive body is removably attached, and the other fastening part corresponding to this fastening part. A fixed ring seat formed on the outer periphery is provided, and the fastening portion of the fixed ring seat is fastened to the fastening portion of the swivel ring seat to tightly connect the fixed ring seat to the swivel ring seat and to the topmost unit of the main column assembly. This invention provides an apparatus for dismantling a self-elevating drive body of a tower crane, characterized in that the self-elevator drive body is detached from a revolving ring seat and lowered to be dismantled.

To explain the device of the present invention with reference to the drawings, the tower crane 1 shown in FIG. 1. As shown in FIGS. 2 to 4, a self-lifting drive body 6 consisting of an upper cylinder part 4 and an upper cylinder part 5 is provided, and this self-lifting drive body 6 is connected to the lowermost main column 2. The lock pin 7 of the lower part 5 is inserted into the lower pin hole 8 of the main pillar unit 2 to set the upper cylinder part 5 to the lowermost main pillar unit 2 □, and the upper cylinder part 4 Insert the lock pin 9 into the upper lock pin hole 10 of the main column 2 A ring seat 12 is removably attached, and a boom 13 and a suspension beam 1 are attached to this swing ring seat 12.
A carrier 16 is provided which is suspended along the suspension beam 14 so as to be freely movable, and the shackle 18 of the suspension block 17 suspended from the carrier 16 The main pillar unit 2 is suspended via a wire 19, and the carrier 16 is movable horizontally, and the lower end of the next main pillar unit 22 is brought into contact with the upper end of the lowermost main pillar unit 2 and fixed.

After setting in this way, the lock pin 9 of the upper cylinder part 4 is pulled out, and the upper cylinder part 4 extending in the vertical direction and provided along the outer circumference side is removed.
1 drive cylinder 20 is operated, and this 1 drive cylinder 2
The upper cylinder part 5 fixes the lower end of the rod 21 fitted to the
The driving cylinder 20 is moved upward through the cylinder 20, and the upper cylinder portion 4 is integrally brought upward using the next main column unit 22 as a guide.

After inserting the lock pin 9 of the upper cylinder part 4 into the lower pin hole 8° of the main column 2° and pulling out the lock pin 7 of the upper cylinder part 5, actuate the first drive cylinder 20 to lock the rod. 21 to 1
After retracting the inside of the drive cylinder 20 and bringing the upper cylinder part 5 upward, the lock pin 7 is inserted into the upper pin hole 10 of the main column 2, and the upper cylinder part 4 is locked. After pulling out the pin 9, actuate the 1 drive cylinder 20 to move the upper cylinder part 4.
The lock pin 9 is inserted into the upper pin hole 10° of the main column unit 22, and then the lock pin 7 of the upper cylinder part 5 is pulled out, and the drive cylinder 20 is actuated to open the upper cylinder part 5. Bring the lock pin 7 of the upper cylinder part 5 upward to the main column 22.
It is inserted into the lower pin hole 82 of the main column 22 to complete the addition and fixation of the main column 22.

By repeating this operation, a required number of main columns 2 are added and fixed to form a main column assembly 3, and a tower crane 1 of a predetermined height is obtained.

After fixing the top main pillar 2 in this way, the fifth
A dismantling device 22 for the self-lifting drive body 6 shown in FIGS. 8 to 8 is formed.

As shown in FIGS. 5 and 6, this dismantling device 22 has a mounting hole 24 provided in the upper end mounting portion 23 of the upper cylinder portion 4 of the self-lifting drive body 6 and a mounting hole in the soil plate portion 25 of the rotating ring seat 12. The self-lifting drive body 6 is removably attached to the swivel ring seat 12 through a mounting bolt 27 and a nut 28 that are inserted through the swivel ring seat 12.
A female tooth-shaped fastening portion 29 is formed on the inner periphery of the soil plate portion 25 of the rotating ring seat 12, and a female tooth-shaped fastening portion 31 is formed on the inner periphery of the soil plate portion 30. The tooth-shaped fastening parts 29 and 31 are spaced apart from each other by a vertical distance via the connecting top wall part 32, and the tooth shapes are set so that the top and bottom match.

Separately, a fixed ring seat 33 is provided.

This fixed ring seat 33 is connected to a soil plate portion 34 and a soil plate portion 35.
and an annular wall part 36 that vertically connects the soil plate part 34 and the soil plate part 35, and a female tooth-shaped fastening part 31 is formed on the outer periphery of the soil plate part 35.

The female tooth-shaped fastening portion 37 has the same number of teeth as the female tooth-shaped fastening portions 29 and 31 of the swivel ring seat 12, and the female tooth-shaped fastening portion 37 can be freely mated with each other, and the female tooth-shaped fastening portion 2
9. The crest 39 of the female tooth-shaped fastening part 37 is attached to the crest 40 of 31.
can be polymerized freely.

Further, mounting holes 41 are arranged in a ring shape at equal intervals near the inner periphery of the soil plate portion 35 of the fixed ring seat 33, and these mounting holes 41, 41, . . . The upper end annular attachment portion 42 of the single column 2 is provided with attachment holes 43, 43, etc. arranged in an annular manner at equal intervals, so that the soil plate portion 35
Mounting holes 44 , 44 formed through the peaks 39 of the female tooth-shaped fastening portion 37 of the swivel ring seat 12 , and mounting holes 45 , 4 formed through the peaks 40 of the female tooth-shaped fastening portion 29 of the swivel ring seat 12 , respectively.
5, and the mounting holes 46, 46, . It can be freely matched with the provided mounting holes 47, 47....

Since the device of the present invention is configured as described above, the uppermost main column 2 of the main column assembly 3 is held horizontally while the fixing ring seat 33 is held horizontally.
The soil plate portion 35 of the fixed ring seat 33 is lowered from above.
The ridge portion 39 of the female tooth shaped fastening portion 37 of the rotating ring seat 12
The fixed ring seat 33 is made so that the soil plate part 35 of the fixed ring seat 33 passes through the soil plate part 30 of the swivel ring seat 12 so as to match the valley part 38 of the female tooth-shaped fastening part 31 of the soil plate part 30. Similarly, the peaks 39 of the female tooth-shaped fastening portion 37 of the soil plate portion 35 are aligned with the valleys 38 of the female tooth-shaped fastening portion 29 of the soil plate portion 25 of the swivel ring seat 12, and the fixed ring seat is lowered. Lower the fixed ring seat 33 so that the soil plate part 35 of 33 passes through the soil plate part 25 of the revolving ring seat 12, and lower the lower ring plate part 35 of the fixed ring seat 33 to the lower soil plate part 25 of the revolving ring seat 12. Position it at the bottom.

At this time, the rotating ring seat 12 is slightly raised by the self-lifting drive body 6, and the lower ring plate part 35 of the fixed ring seat 33 located below the lower monkey plate part 25 and the upper end ring of the main column 2 are formed. A gap is formed between the upper surface of the mounting portion 42 and the lower surface of the ring plate portion 34 when the upper surface of the lower ring plate portion 35 of the fixed ring seat 33 coincides with the lower surface of the swivel ring seat 12. It shall be set so as to coincide with the upper surface of the turning ring seat 12.

After achieving this state, the fixed ring seat 33 is horizontally rotated to overlap the crest 39 of the female tooth-shaped fastening portion 37 with the crest 40 of the female tooth-shaped fastening portion 29 of the swivel ring seat 12 ( At the same time, the mounting hole 46 of the ring stop plate 34 is made to match the mounting hole 47 of the female tooth shaped fastening part 31 of the ring stop plate 30 of the rotating ring seat 12. The ring seat 3 is fixed in the mounting hole 43 of the upper end annular mounting part 42.
The mounting holes 41 of the lower ring plate portion 35 of No. 3 are aligned.

Next, insert the mounting bolts 48 into the mounting holes 41.43 and tighten the fixing ring seat 33 to the upper end of the main column unit 2 via the nuts 49, and insert the mounting bolts 48a into the mounting holes 44, 45°, 46.47. Then, attach the rotating ring seat 1 to the fixed ring seat 33.
Tighten 2.

After the rotating ring seat 12 is supported by the fixed ring seat 33 in this way, the mounting part 2 of the upper cylinder part 4 of the self-lifting drive body 6 is
The self-lift drive body 6 can be separated from the rotating ring seat 12 by removing the mounting holes 1-28, 28, .

When the separated self-lifting drive body 6 forms the main column assembly 3, the upper cylinder part 4 and the upper cylinder part 5 repeat bending and stretching movements like a branch grab to move the self-lifting drive body 6 upward. Contrary to the case described above, the upper cylinder part 5 is first lowered with respect to the upper cylinder part 4 by the driving cylinder 20, and then the lower layer extension movement is repeated so as to lower the upper cylinder part 4 (see FIG. 7a).

The main pillar unit 22 directly above the lowest main pillar unit 2□ of the main pillar assembly 3
When the self-lifting drive body 6 is lowered as shown in Fig. 7a,
Expand the upper part of the stay 50°50.50 and move the self-lifting drive body 6 to the lowest main pillar 2. lower to.

In this case, since both the upper cylinder part 4 and the upper cylinder part 5 are assembled into three parts in the circumferential direction, first, the upper cylinder part 4 is divided into three parts 41, 42,
After disassembling and removing the upper cylinder part 5 into the divided bodies 5□, 5
2 and 53, and remove the self-lifting drive body 6 from the outer periphery of the main column assembly 3 [see FIG. 7 b-f].

A rolling element 51 is pivotally attached to the inner periphery of the upper cylindrical part 4 and the upper cylindrical part 5 of the self-lifting drive body 6, respectively, and these rolling elements 51, 51.
51 rolls along guide rails 52, 52, which are fixedly installed on the outer periphery of the main column 2, extending in the vertical axis direction, to facilitate the transition operation (see FIG. 8).

In addition, after removing the self-lifting drive body 6 from the main column assembly 3 and performing the desired crane work, when adding the main column single body 2, the self-lifting drive body 6 should be moved around the outer circumference of the lowermost main column single body 21. The upper cylinder part 4 and the upper cylinder part 5 are moved through the drive cylinder 20 to move the self-lifting drive body 6 upward by repeating bending and stretching movements like a branch grab. Upper end attachment part 2 of upper cylinder part 4
3 is located below the lower ring plate part 25 of the rotating ring seat 12, and the mounting hole 24 provided in the upper end attachment part 23 of the upper cylinder part 4 of the self-lifting 1 driver 6 and the lower ring plate of the rotating ring seat 12 Insert the mounting bolt 27 into the mounting hole 26 of the part 25 and tighten the upper end mounting part 23 and the lower ring plate part 25 via the nut 28. Insert the L10 push pin 9 into the lower end push pin hole 8 and turn it into the main column assembly 3. Ring part 1
2 to support the crane head 11, and then a mounting bolt that is inserted through the mounting hole 41 of the lower plate part 35 of the fixed ring seat 33 and the mounting hole 43 of the upper end annular mounting part 42 of the uppermost main column unit 2. 48 and nuts 49, and the mounting hole 46 of the ring stop plate part 34 of the fixed ring seat 33, the mounting hole 47 of the ring stop plate part 30 of the swivel ring seat 12, and the mounting hole of the lower ring plate part 25 of the swivel ring seat 12. 45 and the mounting hole 44 of the lower ring plate part 35 of the fixed ring seat 33, respectively, and remove the mounting bolts 48a 1 and the lower ring plate part 3 of the fixed ring seat 33.
5 mounting hole 41 and the upper end annular mounting portion 4 of the top main pillar unit 2
The fixing ring seat 33, the uppermost main column unit 2, and the rotating ring seat 12 are released by removing the mounting bolts 48 and nuts 49 that are inserted through the mounting holes 43 of No. 2.

After achieving this state, the fixed ring seat 33 is horizontally rotated, and the crest 39 of the female tooth-shaped fastening portion 37 of the lower ring plate portion 35 is rotated horizontally.
is aligned with the valley part 38 of the female tooth-shaped fastening part 29 of the lower ring plate part 25 of the swivel ring seat 12, and passes through the lower ring plate part 35 of the fixed ring seat 33 from the lower ring plate part 25 of the swivel ring seat 12. In this manner, the fixed ring seat 33 is lifted up and passed through the stop ring plate portion 30, and the fixed ring seat 33 is separated from the uppermost main column unit 2 and the rotating ring seat 12, and the fixed ring seat 33 is lifted from above the uppermost main column unit 2. Remove 33.

Next, a new main column 2 is suspended by a hanging block 17 vertically installed on the carrier 16, and this new main column 2 is added and fixed onto the existing uppermost main column 2, and the self-lifting 1 drive body 6 is attached. to a predetermined height.

In this way, when the main pillar single body is added and reaches a predetermined height, the fixed ring seat 33 is tightened to the uppermost main pillar single body 2 and the swing ring seat 12. Perform the desired crane operation by lowering the crane by 10 minutes.

The device of the present invention is provided with male and female tooth-shaped fastening parts on the swivel ring seat and the fixed ring seat, and the fixed ring seat is tightly connected to the swivel ring seat through these tooth-shaped fastening parts, and the device is self-elevating from the swivel ring seat. Since the body can be separated, dismantling the self-lifting drive body can be done easily, safely and reliably, and a large-weight and large-capacity self-lifting drive body can be mounted on the topmost main column of the main column assembly. Not only can the stability of this type of tower crane be increased, the danger is significantly reduced, and the reliability of operation can be ensured, but also expensive cranes equipped with hydraulic drive mechanisms can be used. Its effects are significant, as the lifting drive body can be used as a single unit for several tower cranes.

[Brief explanation of the drawing]

Figure 1 is a front view of a tower crane equipped with the device of the present invention before the self-lifting drive unit is dismantled, Figure 2 is a front view showing the related structure of the self-lifting drive unit 1, and Figures 3 and 4 are FIG. 5a is a front view showing the upward bending and stretching process of the elevating drive body; FIG. The half part of Figure 6 is a view corresponding to the arrow A-A in Figure 5, the left half is a view corresponding to the arrow B-B in Figure 5, and Figure 7 a - f are self-lifting, driving FIG. 8, which is an explanatory view of the disassembly process of the body, is a plan view showing the relative positions of the lock pin hole and the lock pin in the upper cylinder part l, the rolling element, the guide rail, and the three-part body. 1... Tower crane, 2... Single main column, total... Main column assembly, 4... Upper cylinder part, 5
......Upper cylinder part, 6...Self-lifting 1 driver, 7
, 9...Lock pin, 8...Lower pin hole, 10...Upper pin hole, 11-9.
...Crane head, 12...Swivel ring seat,
20... Drive cylinder, 21... Rod, 22... Dismantling device, 29, 31...
・Female tooth shaped fastening part, 33... Fixed ring seat,
37...Female tooth shaped fastening part, 38...
Tanibe, 39.40... Yamabe, 51...
Rolling element, 52... Guide rail.

Claims (1)

[Claims] 1. One fastening part is formed on the inner periphery of a rotating ring seat to which the upper end of the self-lifting drive body is detachably attached, and the other fastening part corresponding to this fastening part is formed on the outer periphery. A fixed ring seat is provided, and the fastening part of the fixed ring seat is fastened to the fastening part of the swivel ring seat to fasten the fixed ring seat to the swivel ring seat and to the topmost main pillar of the main pillar assembly. A self-elevating driving body dismantling device for a tower crane, characterized in that the lifting driving body is detached from a rotating ring seat and lowered to be dismantled. 2 One fastening part formed on the inner periphery of the swivel ring seat is a female tooth-shaped fastening part, and the other fastening part formed on the outer periphery of the fixed ring seat L1 is a female tooth-shaped fastening part, and the female tooth The peaks of the female tooth-shaped fastening portion are aligned with the valleys of the female tooth-shaped fastening portion, and the fixed ring seat is lowered and then rotated to fasten the respective peaks of the female tooth-shaped fastening portion and the female tooth-shaped fastening portion. 2. A self-elevating driving body dismantling device for a tower crane as set forth in claim 1, wherein the fixed ring seat is tightly connected to the swivel ring seat and also to the uppermost main column of the main column assembly.