JPH0664892A - Lower part revoluting type tower crane - Google Patents

Abstract

PURPOSE: To provide a lower part rotary type tower crane, permitting simple assembly and disassembly. CONSTITUTION: A lifting cage 12, guided on a tower 43 and provided with a truck 13 at least almost surrounding the tower, is provided. The lifting cage 12 can run on the tower 43 by a drivable adjusting rope 33, and can be connected to a turn table 51. A jib 26 is pivoted to the cage 12 by rotatable bearings 21, while the bearings 21 is separated sideward from the tower at a position at least almost vertical direction of the jib so as to be free at the side of the tower.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a lower pedestal, a rotary pedestal supported by the lower pedestal via a rotary collar, and rotatable about a vertical axis of rotation, and a plurality of tower parts. A tower having a tower foot and a tower head, the tower being fixed to a turntable in the area of the tower foot, and having a longitudinal center axis thereof corresponding to the axis of rotation, and an area of the tower head , A jib pivotally mounted on a rotatable bearing with a horizontal axis, a lifting rope winch, and a lifting guide, which is guided through the jib, is connected to the lifting rope winch, and is equipped with a load receiving portion (load hook). A lower rotary tower crane having a rope, an adjusting rope winch, and an adjusting rope connected to the adjusting rope winch and engaging the jib for rotating the jib about the pivot axis. It is a thing.

[0002]

2. Description of the Related Art In a tower crane of this type, individual tower parts, also called tower shots, are inserted from below through the upper part of a rotating collar, and the area of the tower above them is the same as that of a jib. It is known to lift to accommodate height. But this is extremely troublesome.

In the case of an upper rotary tower crane, that is to say a tower crane in which the rotary collar is located in the region of the tower head of the tower, the jib is mounted on a jib carrier and the jib carrier is used. It is known to lift the rack towards the tower head after mounting the tower. In this case the individual tower sections are inserted for assembly through the rotating collar. A common drawback of top-rotating tower cranes is that all drives and associated switching equipment are located at the tower head level, and therefore for most maintenance and adjustment work someone will jib. That is what you have to climb. Also, the assembly of the tower has to be done through the rotating crane, which is very cumbersome.

Further, there is also known an upper rotary tower crane in which a rotary crane is tilted so that individual tower parts can be inserted from above.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to construct a lower rotary tower crane of this type so that it can be easily assembled and disassembled.

[0006]

In order to solve the above-mentioned problems, the present invention provides a climbing car having a carriage guided on the tower and at least approximately surrounding the tower. , A drivable rope (adjustment rope) can be run on the tower and can be connected to a turntable, and a jib is pivotally attached to the climbing car by the rotary bearing. Is laterally spaced from the tower so that it is free laterally from the tower at least in a substantially vertical position.

The embodiment item 1 described at the end of the present description makes the insertion of the column section particularly simple. Embodiment 2
Shows a configuration for running a climbing car in a tower. Embodiment 3, particularly in connection with Embodiment 4, shows that the climbing car can be locked from the ground to the tower head. Therefore, the climbing basket can be unlocked from the ground. This is especially important as the climbing basket can be lowered into the tower with the jib in case of a sudden storm.

[0008] The fifth aspect of the invention shows a construction for pulling the jib to a position in a substantially vertical direction by using an adjusting rope and making the jib rotatable at this position. Item 6 of the embodiment shows a configuration for traveling the climbing car together with the jib in the tower upward or downward.

The construction described in the embodiment 7 is an advantageous construction showing that the adjusting rope for the jib and the rope for running the climbing car in the tower are the same. Embodiments 8 and 9 show configurations for the automatic assembling of the turning pulleys of the climbing car sheave, possibly in the area of the tower head.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The accompanying drawings show several stages of assembly of a lower rotary tower crane. As can be seen from FIG. 1, the lower pedestal 2 is fixed on the heavy base 1 by using a stay rod 3. On this lower base 2, there is a rotating collar 4
The turntable 5 is attached via. A rotary drive device 6 is arranged on the rotary table 5. Using this rotary drive 6, the turntable 5 can be rotated with respect to the lower pedestal 2 and thus with respect to the base 1. Furthermore, an elevator rope winch 7 having an electric motor 8 and an adjusting rope winch 9 having an electric motor 10 are arranged on the turntable 5. The control devices for the rotary drive device 6 and the electric motors 8 and 10 are housed in a switchboard case 11. The switchboard case 11 is also fixed to the turntable 5.

A jib carrying table called a climbing basket 12 is fixed on the rotary table 5. The climbing basket 12 has a lower portion called a carriage 13. This lower part is connected to the turntable 5 by bolts 14. In this case bolt 1
4 is engaged with a fixed plate 15 attached to the rotary table 5. Furthermore, the climbing basket 12 has a work platform 17 mounted on a carriage 13 and surrounded by a protective fence 16. The work table 17 has, on one side, the rotation axis 1 of the turn table 5.
It projects from 8. A triangular support truss 19 is mounted on the workbench 17 of the climbing basket 12. The upper tip 20 of the support truss 19 is offset outward relative to the axis of rotation 18 as compared to the rotatable bearing 21. A ladder 22 having a protective fence 23 and a work platform 24 having a protective fence 25 and attached to the tip 20 are attached to the support truss 19.

As can be seen from FIG. 3, a swinging jib 26 is fixed to the rotatable bearing 21 of the climbing car 12. The swing jib 26 is rotatable about a horizontal shaft 27. A truck crane is sufficient to mount the rocking jib 26. From the lifting rope winch 27 to the climbing basket 12
The elevating rope 28 is guided to the tip 30 of the swing jib 26 via a turning pulley 29 provided on the support truss 19 and a turning pulley 29a provided on the tip 20 of the support truss 19. At the point 30, the lifting rope 28 is guided via a turning pulley 31 and ends in a cargo hook 32 as cargo receiving means.

Further, the adjusting rope 33 is pulled in. The adjustment rope 33 is provided from the adjustment rope winch 9 to the climbing basket 1
It is guided to the turning pulley 35 provided at the tip 20 of the support truss 19 through the turning pulley 34 provided in 2, and is guided to the pulley case 36 from there. The adjusting rope 33 is returned from the pulley case 36 via another turning pulley 37 provided on the tip 20 of the support truss 19, and is guided from there to another turning pulley 38 provided on the climbing car 12. From this turning pulley 38 to the adjusting rope 33, the turning pulley 39
Be guided to. This turning pulley 39 is attached to the tower head in the manner described below. From the turning pulley 39 to the adjustment rope 33, a fixing point 40 provided on the climbing car 12
Is guided to and fixed. The guidance of the adjusting rope 33 is particularly clear from FIG.

The tilting rope 41 is guided from the pulley case 36 to the tip 30 of the swing jib 26 and is fixed there. When the adjusting rope 33 is wound by the adjusting rope winch 9, the tilting pulley device 42 formed by the turning pulleys 35 and 37, the pulley case 36, and the attached portion of the adjusting rope 33 is shortened as follows: The jib 26 is brought from the horizontal assembly position to the substantially vertical position shown in FIG. 5, in which position the tip 3 of the rocking jib 26 is
0 is approximately within the axis of rotation 18, or
Shortened to be somewhat rearward.

The tower 43 of the tower crane comprises a plurality of tower parts 4
4a, 44b, 44c, 44d, 44e, 44f, 44
g. These tower parts are actually called tower shots. As can be seen from FIG. 5, the tower portion 44a is first gripped by the cargo hook 32 and pulled up to the position shown in FIG. 5, that is, above the climbing car 12. From there, the tower portion 44a is lowered through a suitable hole 45 provided in the worktable 17 of the climbing car 12 to the lower portion of the climbing car 12 used as the carriage 13 and reaches the top of the turntable 5. There, the lower tower part 44a of the tower 43 is inserted into a suitable receiving part 5a of the turntable 5 and is connected by screws not shown in the drawing. Trolley 13
The cross section of the lower part of the climbing basket 12 used as
It is chosen to be able to receive the column 43, ie to surround it. All tower parts 44a, 44b, 44c, 44d, 44e, 4 of the tower 43
4f and 44g have the same outer cross section. Dolly 1
A traveling roller 46 is attached to the unit 3. The running rollers 46 are in contact with the rail-shaped outer profile parts 47 of the individual tower parts 44a ... 44g and thus of the tower 43. The outer profile portion 47 extends parallel to the rotation axis 18. In this way, the climbing car 12 can travel on the tower 43 over its entire height.

Lower tower section 4 used as tower foot 48
After fixing 4a to the turntable 5, the cargo hook 32 is removed from the lower tower portion 44a. Next, the column portion 44g having the column head 49 is grasped by using the cargo hook 32, and FIG.
As can be seen, the lifting rope 28 is used to lift.
The next tower portion 44f remaining on the ground 50 is connected on one side to the tower portion 44g by a screw 51. Next, tower part 4
4 g is pulled upward by the length of the tower portion 44f, so that the tower portion 44f also reaches the vertical position. As a result, both tower parts 44g and 44f can also be connected to each other by screws 51 on the other side. This work is for all tower parts 44
g, 44f, 44e, 44d, 44c, 44b are connected to each other and suspended until the cargo hook 32 is suspended as shown in FIG. Next, the packs of the tower portions 44b to 44g connected to each other are similarly screwed by the screws 51.
It is connected to the tower portion 44a forming the tower foot 48.
Thereafter, the cargo hook 32 is removed from the tower head 49.

At this point, the bolt 14 is removed to disconnect the climbing cage 12 from the rotary table 5. Next, the adjusting rope 33 is wound up by the adjusting rope winch 9 so that the pulley case 36 contacts the stopper 54 provided at the tip 20 of the tower 43. At this time, the swing jib 26 is connected to the support truss 19 by the fixing plate 54a. As a result, the swing jib 26 maintains this steeply inclined position even if the adjustment rope 33 is removed. At this point, the swing jib 26 is in a substantially vertical position and is free from the tower 43. Next, using the load hook 32 and the elevating rope 238, the cross girder 52 carrying the turning pulley 39, which was previously supported by the climbing basket 12 (see FIG. 2), is moved upward. And to the tower head 49 with bolts 52a (see FIG. 9). At this point, the turning pulley 39 together with the turning pulley 38 fixed to the climbing car 12 and a fixing point 40 including a part of the adjusting rope 33 looping around the turning pulleys 38, 39, the climbing car pulley system. 53 is formed. While the cross girder 52 is being pulled upward together with the turning pulley 39, the climbing cage pulley device 53 is pulled upward, so that the adjustment rope 33 is loosened. After the cross girder 52 is pulled upward and fixed, the fixation between the swing jib 26 and the support truss 19 is released again,
By winding the adjusting rope 33 around the adjusting rope winch 9, the climbing cage pulley device 53 is shortened, so that the climbing cage 12 moves upward in the tower 43. In the upper position, i.e. when the climbing car 12 is near the tower head 49, the climbing car 12 is fixed to the tower head 49. For this reason, the lock bolt 55 is attached to the carriage 13 of the climbing basket 12. The lock bolt 55 is movable by a drive device 56, for example by a transmission drive device 56,
The holes 57 are provided so as to be fitted to the corresponding positions of the tower head 49. The operation of this lock bolt 55 which started the drive device 56 can be performed from the ground surface 50.
The corresponding control device is also housed in the switchboard case 11. When the climbing car 12 moves upward together with the swing jib 26, the reinforcing rope 58 connected to the rotary table 5 also rises. Then, the adjusting rope 33 is unwound from the adjusting rope winch 9 to lower the swing jib 26 to reach the working position shown in FIG. 8, for example. The tower 43 provided with the rocking jib 26 is rotatable. The central vertical axis of the tower 43 coincides with the rotation axis 18. Climbing cage pulley device 5 during work
3 is fixed, the rocking jib 26 can be adjusted to the adjustment rope 3
It is possible to swing in the vertical direction by means of 3.

For example, in the case of a storm, the swing jib 2
When it is necessary to lower 6 quickly, contrary to the above-described assembling method, the adjusting rope 33 is newly shortened to bring the swing jib 26 to a substantially vertical position, and then the lock bolt 55. After releasing the climbing car 12, that is, after removing the climbing car 12 from the tower head 49, the climbing car 12 is lowered together with the swing jib 26. Such a swinging jib 2
The descent of 6 can be completed within minutes.

Of course, the tower 43 can also be assembled by assembling the individual tower sections 44a to 44g separately. That is, it is not necessary to assemble the tower 43 to the bolt 50 in advance. Furthermore, the tower 43 can be assembled much higher than the height of the rocking jib 26. In this case, the climbing basket 12 must be occasionally lifted and locked in the tower 43 in the intermediate position. When the climbing cage 12 is fixed to a building in a known manner, the climbing cage 12 can be used without a reinforcing rope. In this case, the tower 43 is rotatably guided in a ring connected to the building.

11 to 13 are explanatory views showing how the cross beam 52 'is automatically locked with the tower head 49. As shown in FIG. The cross beam 52 'has two upper locking plates 59. The lock plate 59 is rotatably supported around the rotation axis 60 with respect to the cross beam 52 '. The two lock plates 59 are arranged so as to be mirror images of each other,
Each has a lock hole 61. The two lock plates 59 are provided at the ends on the side opposite to the respective lock holes 61.
Are connected to each other by a pretensioned coil tension spring 62. As a result, the lock plates 59 occupy the horizontal positions opposite to each other as shown in FIG.

In order to move the cross girder 52 'upwards, a frame-shaped carriage 63 is installed around the assembled tower 43. The trolley 63 includes a traveling roller 64 that engages with the rail-shaped outer profile portion 47. In this embodiment as well, the cross girder 52 ′, which was previously supported on the climbing car 12, is installed on this trolley 63 by the lifting rope 28 having the loading hook 32. The load hook 32 is then connected to the carriage 63 using an auxiliary rope 65, which, as can be seen in FIG.
Drive toward 9. Therefore, the lock plate 59 is provided in the area of the lock hole 61 with the lock bolt 6 attached to the tower portion 44g in the area of the tower head 49.
6, the locking plate 59 in this case pivots downwards and the locking bolt 66 moves into the locking hole 61 via the upper arm 67 which defines the locking hole 61. Then, the carriage 63 is caused to travel downward again on the tower 43.
The cross beam 52 'has moved slightly downwards and the lock bolt 6
As shown in FIG. 13, 6 is fixed in the lock hole 61. The lock plate 59 is held in this locked position by the tension spring 62.

The truck 63 is separated from the tower 43 at its lower position. The climbing car 12 is then moved upwards in the manner already described.

After lowering the climbing basket 12 to remove the cross girder 52 ', a trolley 63 is again installed around the tower 43 and upwards until the locking plate 59 is pulled upwards beyond the locking bolts 66. Be pulled. At this time, the lock plate 59 occupies the position shown in FIG. Horizontal digit 5
As 2 ′ descends, the lower, longer arm 68 contacts the lock bolt 66, resulting in a tension spring 6
2 extend correspondingly, and the arms 67 and 68 move the pivot axis 6
Rotate upwards around 0. The horizontal beam 52 'is the lock plate 5
Along with 9, the lock bolt 66 penetrates and slides downward.

Next, the advantageous configurations of the present invention will be listed.

(1) Lower part characterized in that the climbing basket (12) is provided with a hole (45) in the upper part for inserting at least one tower part (44a) into the carriage (13) from above. Rotating tower crane.

(2) The climbing car (12) is moved by the traveling roller (4
6), characterized in that the running roller (46) is guided by a rail-shaped outer profile portion (47) of the tower (43) extending parallel to the central longitudinal axis (rotational axis 18). The lower rotating tower crane.

(3) A lower rotating tower crane, wherein the climbing cage (12) can be locked to the tower (43) at least in the area of the tower head (49).

(4) The lower rotating type according to claim 3, wherein the climbing basket (12) can be locked to the tower (43) by using a lock bolt (55) operable by an electric motor. Tower crane.

(5) A pulley case (36) in which the adjusting rope (33) is connected to the jib (26) by a tilting rope (41) and a turning pulley (35, 37) connected to the climbing car (12). Is guided through to form a tilting pulley device (42), and a turning pulley (35, 37)
Is located behind the rotatable bearing (21) as seen from the axis of rotation (18) and is spaced from the axis of rotation (18) as follows, ie the jib (26) is at least approximately vertical. A lower rotating tower crane, characterized in that it is sometimes separated from the jib (26) so as to be free laterally.

(6) Driven rope (adjustment rope 3
3) is guided by a turning pulley (38) provided on the climbing car (12) and another turning pulley (39) to run the climbing car (12), and the climbing car pulley device (53) is guided. And forming another deflection pulley (39)
Is a lower rotating tower crane, characterized in that it can be mounted on the tower (43) in the area of the tower head (49).

(7) The lower rotary tower crane according to claim 5 or 6, characterized in that the adjusting rope (33) also forms a climbing cage pulley device (53).

(8) In the area of the tower head (49), the tower (4
7. Lower part according to claim 6, characterized in that said further turning pulley (39) attachable to 3) is carried on a cross beam (52, 52 ') connectable to a tower (43). Rotating tower crane.

(9) The horizontal beam (52 ') is connected to the tower head (4).
Lower rotating tower crane according to claim 8, characterized in that it can be locked automatically with the tower (43) in the region of 9).

[0035]

According to the invention, the climbing cage, which is fixed to the turntable during the assembly of the tower, is used as a crane for assembling the tower with the jib already mounted on the climbing cage. In this case, first, the lower tower part forming the tower foot is inserted into the lower part of the climbing car used as a trolley, and is connected to the rotary table. The individual tower sections are then placed and assembled sequentially. Alternatively, a tower pack consisting of multiple tower sections and assembled at or near the ground is pulled up and assembled using conventional lifting ropes. If the height of the tower is less than the length of the jib, the tower will be assembled and then the climbing basket will be raised with the jib. If, on the other hand, the height of the tower is higher than the length of the jib, the tower is assembled in parts and the climbing basket is raised with the corresponding part of the jib.

Thus, the lower rotary tower crane according to the present invention can be easily assembled and disassembled.

[Brief description of drawings]

FIG. 1 is a diagram showing a turntable attached to a base of a tower crane according to the present invention.

FIG. 2 is a diagram illustrating a turntable mounted on a base together with a climbing basket assembled on the base.

FIG. 3 is a view showing a climbing basket to be assembled on a turntable together with a jib.

FIG. 4 is a diagram illustrating guidance of an adjustment rope.

FIG. 5 is a diagram illustrating a usage mode of a jib for assembling one lower tower portion on a rotary table.

FIG. 6 is an illustration of assembling two tower sections in the ground area.

FIG. 7 is an explanatory view of assembling a tower using a jib.

FIG. 8 is a view of the lower rotary tower crane according to the present invention in a fully assembled and ready-to-use state.

9 is an enlarged view of a portion of FIG.

FIG. 10 is a view showing a lock with a climbing basket and a tower head.

FIG. 11 is a plan view of a modified embodiment of the cross beam.

FIG. 12 is a partial view of a column head configured for the cross beam of FIG.

FIG. 13 is a view showing the cross beam of FIGS. 11 and 12 in a state of being locked to a tower.

[Explanation of symbols]

 5 Turntable 12 Climbing basket 13 Cart 21 Rotatable bearing 26 Jib 33 Adjustment rope 43 Tower

Claims (1)

[Claims] 1. A lower platform (2) and a rotary platform (5) which is supported by the lower platform (2) via a rotary collar (4) and is rotatable about a vertical rotation axis (18). ) And a plurality of tower parts (44a to 44g),
8) and a tower head (49), which is fixed to the turntable (5) in the region of the tower foot (48) and whose longitudinal center axis is the rotation axis (18). (43) corresponding to), a jib (26) pivotally mounted on a rotatable bearing (21) with a horizontal axis (27) in the region of the tower head (49), and a lifting rope winch. (7), a lifting rope (28) guided through a jib (26), connected to a lifting rope winch (7) and equipped with a load receiving portion (loading hook 32), and an adjusting rope winch (9). And an adjusting rope (3) which is connected to the adjusting rope winch (9) and is engaged with the jib (26) for rotating the jib (26) around the pivot axis (27).
3) A lower rotating tower crane having a climbing cage (12) having a carriage (13) guided over the tower (43) and at least approximately surrounding the tower (43). Is provided, the climbing car (12) can travel on the tower (43) by a drivable rope (adjustment rope 33), and can be connected to the rotary base (5),
A jib (26) is pivotally attached to the climbing basket (12) by the rotatable bearing (21), and the rotatable bearing (21).
A lower rotary tower, characterized in that the jib (26) is laterally spaced from the tower (43) so that it is free laterally from the tower (43) at least in a substantially vertical position. Shaped crane.