CN101357739A - Dedicated tower crane for boom type tower assembly - Google Patents

Abstract

The special tower crane provided by the invention provides a boom-type tower assembly, wherein the fixed foot 1, the standard section 2, and the inner tower section 6 for jacking are connected to form a tower body, and the inner tower section for lifting is arranged on the inner tower section for lifting. 9. There is a slewing assembly 17 on it to hinge the boom 10 and a luffing mechanism 16, wherein the hoist 19 is connected with the luffing rope 12 between the boom, so that the boom can be 15°~ in the vertical plane. Rotate in the range of 89°; hoisting mechanism 8 is established on the inner tower section for hoisting, wherein the hoist and the hook pulley block 11 on the boom are connected with wire ropes. When the crane needs to be dismantled during the working process in the form of internal attachment, the lifting arm is raised by an angle of 89° through the luffing mechanism, so that the lifting arm passes through the window at the top of the tower and falls from the middle of the tower by itself; the lifting mechanism 8 is located on the tower body , can shorten the lifting work stroke to improve construction efficiency, and the tower body can also be equipped with a hanger for dismantling the tower, which can facilitate the disassembly of the crane; the crane is simple in construction, low in construction cost, and has a wide range of applications.

Description

Dedicated tower crane for boom type tower assembly

technical field

The invention relates to the technical field of power transmission line construction, and is a tower crane with a boom that can rotate upwards by 89° in a vertical plane, without a balance arm, and with a lifting mechanism located on the tower body. It is especially suitable for the erection and construction of power transmission line iron towers .

Background technique

At present, the jib of the tower crane commonly used in the construction of domestic transmission line iron towers can only reach an upward angle of 85° in the vertical plane and is equipped with a balance arm. The balance arm cannot pass through the window at the top of the tower, so it is complicated and difficult to dismantle the tower crane; in addition, the lifting mechanism of a conventional tower crane is usually located on the balance arm of the crane or on the ground, and placing the lifting mechanism on the ground will not only increase the The amount of wire rope will also make the lifting work journey too long, thereby reducing the construction efficiency. The driver's cab is placed on the top of the crane, and the working condition of the crane is monitored by the driver's eyesight, so the safety factor is not high in ensuring the personal safety of the driver. Therefore, when using this tower crane for tower construction, the construction is complicated, the safety factor is not high, the construction efficiency is low, and the cost is high.

Contents of the invention

The object of the present invention is to provide a special-purpose tower crane with a boom-type tower assembly that does not have a balance arm and whose boom can rise 89° in a vertical plane.

To achieve the above object, the present invention takes the following design scheme:

A special tower crane with a movable arm type tower, which includes a fixed foot, a standard section, and an inner tower section for jacking, which are connected to each other in sequence from bottom to top, and a jacking device is arranged on the inner tower section for jacking, The upper end of the inner tower section for lifting is also connected with an inner tower section for lifting together, thus forming the entire tower body; a lifting mechanism is arranged on the inner tower section for lifting on the tower body, and the tower A slewing assembly is rotatably connected to the top, and one end of the boom is connected to the slewing assembly, and a luffing mechanism is arranged on the slewing assembly, and the luffing mechanism includes a winch, which is fixed On the slewing assembly, one end of a luffing stay rope is fixed on the winch, and the other end of the luffing stay rope is fixed on the boom so that when the winch rotates, the luffing pulley The lifting arm is driven by the rope and can rotate within the range of 15°-89° from the horizontal position in the vertical plane; the hoisting mechanism provided on the tower body includes a winch, which is connected and wound together One end of the heavy wire rope, the other end of the wire rope extends along the boom to a hook pulley block connected on the boom extension end.

Further, a tower top bracing rod is fixed on the slewing assembly on the top of the tower, one end of a safety rope is fixed on it, and the other end of the safety rope is fixed on the boom. The length of the safety rope is such that the safety rope is straightened when the boom is at the lower limit position within its rotatable angle range.

The luffing stay rope includes a front end stay rope, a luffing pulley block and a pulley block stay rope, one end of the front end stay rope is fixed on the boom, and the other end of the front end stay rope is fixed to one of the luffing pulley blocks Pulley, the other pulley in the luffing pulley block is fixed on the slewing assembly, for example, on the tower top strut, one end of the pulling rope of the pulley block is fixed on the roller of the hoisting machine of the luffing mechanism, and the other end passes through The wheel grooves of the two pulleys of the luffing pulley block are fixed on the slewing assembly, for example, on the tower top strut.

For the tower body of the special tower crane for boom-type tower assembly, the lower end of the standard section is fixedly connected to the fixed foot through the existing bolt connection structure, and the upper end of the standard section is connected to the inner tower section for jacking through the existing connection mechanism. The jacking device is equipped with the lower end of the internal tower section for this jacking, which is a prior art, and the upper end of the internal tower section for this jacking is fixedly connected to the lifting device through the existing fishplate and connecting pin connection structure. Use the inner tower section.

The boom of the special tower crane for boom-type tower assembly can rotate within the range of 15°～89° in the vertical plane. The overturning moment generated when lifting heavy objects is borne by the crane tower body. The hoisting mechanism is located on the inner tower section for lifting the tower body, which can shorten the lifting work stroke. The hanger for tower dismantling is located on the inner tower section for jacking. The crane can be easily disassembled.

The boom is of a lattice structure, and the working range is controlled by the luffing mechanism. When the crane needs to be dismantled during the working process of the attached form, the jib is raised by an angle of 89° through the luffing mechanism, so that the boom can be lifted from the The window at the top of the tower passes through, so that it falls from the middle of the tower by itself.

The connection structure between the hoisting mechanism and the inner tower section for hoisting is as follows: the hoisting mechanism includes a hoist, a hoist connecting plate, and a connecting pin, and the hoist is fixed on a pallet, and the hoist is fixed under the pallet. The connecting plate of the hoist is fixed, and the connecting pin hole is arranged at the corresponding position on the connecting plate of the hoisting machine and the inner tower section for lifting. The inner tower section hoist connecting plate is connected.

A hanger for dismantling the tower is also provided on the tower body. The tower demolition hanger includes a hanger and a lifting pulley, and the hanger includes a hanger brace, a hanger connecting rod and a hanger connecting plate, which are connected to form a triangular connecting frame, and the rotating shaft is fixed on the hanger connecting plate , which is fixed on the tower body through a rotating shaft pin; the lifting pulley is connected with a hanger hook on the hanger through a hanging rope.

The hanger used for tower dismantling is fixed on the inner tower section for jacking by turning the pivot pin. When dismantling the tower, hang a wire rope on the lifting pulley. One end of the wire rope is connected to the winch placed on the ground, and the other end is connected to the dismantled tower material. The hoister releases the wire rope, and the dismantled tower material is transported from the tower to the ground. The hanger for tower dismantling is located on the inner tower section for jacking, and this position structure can facilitate the dismantling of the crane. In the prior art, there is also a hanger for dismantling the tower on the tower body. There is no suspension hook on it, and the pulley is directly arranged on the hanger. Such a structure makes it inconvenient to connect the wire rope on it with the hoist. And tower dismantling among the present invention is used hanger, establishes suspension hook on the hanger on it, hooks up the lifting pulley, and such structure can be conveniently connected with winch.

The driver's cab is arranged at the bottom of the crane, each lifting mechanism and the driving motors in the lifting mechanism and various camera control devices arranged on the tower body are connected to the linkage console in the driver's cab through power transmission and/or data transmission cables. Connection, the working condition of the crane can be monitored through the camera device in the driver's cab and controlled by the linkage platform.

The special-purpose tower crane provided by the present invention has no balance arm and the boom can be raised approximately vertically, so the boom can pass through the window at the uppermost end of the iron tower, so the work is simple and the construction efficiency is high when dismantling the tower crane. In addition, the hoisting mechanism of the crane is located on the tower body, which can shorten the lifting work stroke and improve the construction efficiency. The hanger for dismantling the tower is located on the inner tower section for jacking, which can facilitate the disassembly of the crane; the driver's cab is arranged at the bottom of the crane , The working condition of the crane can be monitored through the camera device in the driver's cab and controlled by the linkage table. Therefore, this tower crane has the characteristics of high safety factor, simple construction, high construction efficiency and low construction cost.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic diagram of the lifting mechanism of the present invention.

Fig. 3 is a schematic diagram of the hanger used for dismantling the tower of the present invention.

Fig. 4 is a schematic diagram of the inner tower section for hoisting in the present invention.

Fig. 5 is a schematic diagram of the installation structure of the hoisting mechanism in the crane provided by the present invention on the inner tower section for hoisting;

Fig. 6 is a schematic diagram of the connection structure of the jacking inner tower section and the standard section in the crane provided by the present invention;

Fig. 7 is a structural schematic diagram of the slewing assembly and the jib thereon and other components in the crane provided by the present invention.

Detailed ways

See Fig. 1: a kind of tower crane specially used for boom-type tower assembly, the boom can be raised 89° in the vertical plane, and it includes a fixed foot 1, a standard section 2, a rest platform 3, a standard channel 4, Jacking device 5, inner tower section for jacking 6, hanger for tower dismantling 7, hoisting mechanism 8, inner tower section for lifting 9, jib assembly 10, hook pulley block 11, luffing rope 12 , safety rope 13, luffing pulley block 14, tower top strut 15, luffing mechanism 16, slewing assembly 17, driver's cab 18. This crane has no counter jib.

The upper end of the standard section is connected to the inner tower section for jacking through the existing connection mechanism; the jacking device is installed at the lower end of the inner tower section for jacking, which is the prior art, and the upper end of the inner tower section for jacking is The inner tower section for lifting is fixedly connected by the existing fishplate and connecting pin shaft connecting structure.

As shown in Figures 1, 4, 5 and 6, the lower end of the standard section 2 is fixedly connected to the fixed foot 1 through the existing bolt connection structure, and the upper end of the standard section 2 is connected to the inner tower section 6 for jacking through the existing connection mechanism. The standard section 2 is provided with a rest platform 3 and a standard channel 4 . A jacking device 5 is installed at the lower end of the inner tower section 6 for jacking, and the upper end of the inner tower section 6 for jacking is connected with the inner tower section 9 for lifting, which can be connected by a fishplate. The lower end of the inner tower section 9 is equipped with a hoisting mechanism 8, a hoist 19 is arranged on the hoisting mechanism 8, and the rotary assembly 17 is fixed on the upper end of the inner tower section 9 for lifting. 17 is connected with the jib 10 and a luffing mechanism 16 is set, the luffing mechanism is provided with a winch, one end of the luffing stay rope 14 is fixed on the winch, and the other end of the luffing stay rope is fixed on the jib 10, so that the boom 10 can rotate within the range of 15°-89° from the horizontal position in the vertical plane;

As shown in Figure 4, specifically, the connection structure of the inner tower section 9 for lifting and the inner tower section 6 for lifting is as follows: the inner tower section 9 for lifting is composed of the inner tower section hoist connecting plate 23, the fish tail Plate 24, main chord 25, auxiliary pole I26, auxiliary pole II27, auxiliary pole connecting plate I28, auxiliary pole connecting plate II29, auxiliary pole connecting plate III30, auxiliary pole III31, winch mounting plate 32, inner tower joint connecting pin 33 The inner tower section 9 for lifting is fixed on the inner tower section 6 for jacking through the inner tower section connecting pin 33 . The main chord 25 included in the inner tower section 9 for lifting is provided with an auxiliary rod connecting plate I28 and an auxiliary rod connecting plate III30, and the auxiliary rod I26, the auxiliary rod II27 and the auxiliary rod III31 are connected on the auxiliary rod connecting plate through a hinged structure to form a Inner tower section 9 for lifting. A fishplate 24 is fixed at the lower and upper ends of the inner tower section 9 for lifting, and the fishplate 24 at the lower end and the connecting pin shaft connected with the inner tower section for lifting make the lifting The inner tower section for lifting is connected to the top of the inner tower section for lifting, and the fixing part of the rotary assembly 17 is fixed on the upper end of the inner tower section 9 for lifting through the fish plate 24 at the upper end of the inner tower section for lifting. The rotary part in the rotary assembly is rotatably fixed on the fixed part.

A turntable is provided on the slewing assembly 17, and the jib assembly 10 is articulated on the turntable, and a luffing mechanism 16 is fixed on the turntable, and a luffing pull rope is fixed on the hoist on the luffing mechanism 16. 12, the other end of the luffing stay rope 12 is fixed on the boom 10. The hoist is driven to retract and unwind the luffing stay rope 12 to realize the up and down swing of the boom 10 .

Specifically, as shown in Figures 1 and 7, the luffing stay rope 12 includes a front end stay rope 12a, a luffing pulley block 14 and a pulley block stay rope 12b, one end of the front end stay rope 12a is fixed on the boom 10, and the front end pulley The other end of the rope 12a fixes a pulley 14a in the luffing pulley block, and the other pulley 14b in the luffing pulley block is fixed on the rotary assembly, as in the embodiment shown in Figures 1 and 7. One is fixed on the tower top strut 15 on the slewing assembly, one end of the pulley block stay rope 12b is fixed on the roller of the hoist of the luffing mechanism, and the other end passes through the two pulleys 14a, 14b of the luffing pulley block. The wheel groove is fixed on the tower top strut 15. Start the hoist to realize the rotation of the boom 10 in the range of 15° to 89°.

The hook pulley block 11 is arranged on the extended end of the boom 10, and one end of a wire rope is connected to it, and the other end of the wire rope passes through the boom 10 and the frame of the inner tower section 9 for hoisting and is wound and fixed on the lifting arm 10. On the roller of the winch 19 of lifting mechanism 8.

An end of a safety rope 13 is also connected on the boom 10, and the other end of the safety rope 13 is connected with the tower top strut 15, and the effect of the safety rope is to prevent the boom from turning downwards accidentally when lifting heavy objects. By driving the luffing mechanism, the boom 10 can rotate within the range of 15°-89° on the vertical plane. The boom 10 is a lattice structure. When the crane needs to be dismantled during the working process of the attached form, the boom 10 is raised by an angle of 89° through the luffing pulley block 14, so that the boom 10 can be lifted from the window at the top of the tower. Pass, thus falling from the middle of the tower by itself.

A hook pulley block is set at the protruding end of the boom 10 for hoisting heavy objects.

The lower end of the inner tower section 9 for hoisting is provided with an inner tower section hoist connecting plate 23 (as shown in Figure 4 ), on which a hoisting mechanism 8 is fixed. As shown in Figure 2, described hoisting mechanism 8 is made up of winch 19, hoist connecting plate 20, hoisting machine connecting pin 22, and hoisting mechanism 8 is inserted in the pin shaft 22 in the pin hole 21 of connecting plate 20 and Lifting is connected with the inner tower section hoist connecting plate 23, that is, the hoisting mechanism 8 is fixedly connected on the inner tower section 9 for hoisting through the pin hole 21 of the inner tower section hoist connecting plate 20 and the hoist connecting pin 22. The hoist 19 is arranged on the hoist connection plate 20, and one end of a steel wire rope 19a is wound and fixed on it. connected so that the hook pulley block 11 can be raised and lowered (as shown in Figures 5 and 7); the overturning moment generated when the boom 10 lifts heavy objects is borne by the crane tower body, and the hoisting mechanism 8 is located at the inner tower section for lifting the tower body. 9, the hoisting mechanism 8 is positioned at the lower end of the inner tower section 9 for hoisting the tower body, which can shorten the lifting work stroke to improve construction efficiency.

As shown in Figures 1 and 3, a hanger 7 for dismantling the tower is set on the inner tower section 6 for lifting, and the hanger for dismantling the tower is in the form of a hook: the hanger 7 for dismantling the tower is connected by a rotating shaft 34 and a hanger Plate 35, hanger connecting rod 36, 37, hanger hook 38, sling 39, lifting pulley 40, hanger strut 41, hanger connecting pin 42, rotating shaft pin 43 are composed of two rotating shafts 34 sets up and down It is fixed on the vertical frame of the inner tower section 6 for jacking. In this embodiment, the rotating shaft pin 43 is fixed on the vertical frame of the inner tower section 6 for jacking, and the rotating shaft 34 is connected with the rotating shaft pin 43. , that is, sleeved on the rotating shaft pin 43 . Connect the boom connecting plate 35 on the rotating shaft 34, hinge the hanger connecting rod 36 and one end of the hanger strut 41 on the two hanging rod connecting plates 35 arranged up and down, and connect the other end of the hanger connecting rod 36 to the hanger. One end (such as welding) of the frame link 37, the other end of the hanger link 37 and the hanger strut 41 are connected together with the hanger hook 38, and the hoisting pulley is suspended by the suspension rope 39 on the hanger hook 38 40. The hanger 7 for dismantling the tower is fixed on the inner tower section 6 for jacking up by rotating the shaft pin 43. When dismantling the tower, hang a steel wire rope on the lifting pulley 40. One end of the steel wire rope is connected with the winch placed on the ground, and the other end is connected with the lifting machine. The tower materials are connected, the hoist releases the wire rope, and the dismantled tower materials are transported from the tower to the ground. The hanger 7 for dismantling the tower is located on the inner tower section 6 for jacking, and such a position structure can facilitate the disassembly of the crane. And the lifting pulley is connected on the hanger hook by the lifting rope, so that it is more convenient to be connected with the wire rope between the lifting pulley and the hoist.

As shown in Figure 1, the driver's cab 18 is arranged at the bottom of the crane, and the working conditions of the crane can be monitored through the camera device in the driver's cab and controlled by the linkage platform. The driver's cab is arranged at the bottom of the crane, each lifting mechanism and the driving motors in the lifting mechanism and various camera control devices arranged on the tower body are connected to the linkage console in the driver's cab through power transmission and/or data transmission cables. connect.

Claims (10)

1. column crane special for movable arm type group tower, it is characterized in that: it comprises interconnective successively from bottom to top fixed feet (1), standard knot (2), jacking Nei Tajie (6), one jacking apparatus (5) is arranged on described jacking with on the Nei Tajie (6), also be connected with one in this jacking with the upper end of Nei Tajie (6) and hoist, constitute whole body of the tower thus with Nei Tajie (9); One mechanism (8) that hoists is arranged on described on the described body of the tower and hoists with on the Nei Tajie (9), connect the total member of single-revolution (17) on the described cat head rotationally, go up an end that connects this crane arm (10) at this rotating assembly spare (17), a luffing mechanism (16) is gone up and be provided with to this rotating assembly spare (17), this luffing mechanism (16) comprises a winch, it is fixed on the described rotating assembly spare (17), set firmly an end that twines a luffing stay cord on this winch, the other end of luffing stay cord is fixed on this crane arm, make when winch rotates, affect described crane arm in perpendicular, in 15 °～89 ° scopes of level attitude, to rotate by described luffing stay cord; Comprise a winch in the described lifting mechanism that on this body of the tower, is provided with, connect on this winch and twine an end of reusing steel rope (19a) together, the other end of this steel rope (19a) extends to bonded assembly one lifting hook pulley group (11) on crane arm (10) external part along described crane arm (10).

2. column crane special for movable arm type group tower according to claim 1, it is characterized in that: also set firmly a cat head strut (15) on the described rotating assembly spare on the described cat head, set firmly an end of a safety rope (13) on it, the other end of this safety rope (13) is fixed on the described crane arm (10).

3. column crane special for movable arm type group tower according to claim 2 is characterized in that: the length of this safety rope (13) is: safety rope is straightened when making the lower position of described crane arm in its rotatable angular range.

4. column crane special for movable arm type group tower according to claim 1, it is characterized in that: described luffing stay cord (12) comprises a front end stay cord (12a), one luffing assembly pulley (14) and assembly pulley stay cord (12b), one end of described front end stay cord (12a) is fixed on the crane arm (10), pulley (14a) in the fixing described luffing assembly pulley of the other end of this front end stay cord (12a), another pulley (14b) in the described luffing assembly pulley is fixed on the rotating assembly spare (17), one end of described assembly pulley stay cord (12b) is fixed on the roller of winch of described luffing mechanism, and the other end passes two described pulleys (14a) of described luffing assembly pulley, race (14b) is fixed on the described rotating assembly spare (17).

5. column crane special for movable arm type group tower according to claim 1, it is characterized in that: described luffing stay cord (12) comprises a front end stay cord (12a), one luffing assembly pulley and assembly pulley stay cord (12b), one end of described front end stay cord (12a) is fixed on the crane arm (10), pulley (14a) in the fixing described luffing assembly pulley of the other end of this front end stay cord (12a), another pulley (14b) in the described luffing assembly pulley is fixed on the cat head strut (15) fixing on the rotating assembly spare, one end of described assembly pulley stay cord (12b) is fixed on the roller of winch of luffing mechanism, and the race that the other end passes described two pulleys of luffing assembly pulley is fixed on the cat head strut fixing on the rotating assembly spare.

6. column crane special for movable arm type group tower according to claim 1 is characterized in that: this jacking connects firmly this with Nei Tajie upper end by fish plate, connecting pin Axile connection structure and hoists and use Nei Tajie.

7. column crane special for movable arm type group tower according to claim 1, it is characterized in that: described lifting mechanism (8) with the connection structure that hoists with Nei Tajie (9) is: described lifting mechanism (8) comprises winch (19), winch connecting panel (20), connect bearing pin (22), described winch (19) is fixed on the supporting plate, below this supporting plate, set firmly winch connecting panel (20), at described winch connecting panel (20) with hoist and go up connecting pin axis hole on the Nei Tajie winch supporting plate (23) that the corresponding position is provided with Nei Tajie (9), make to hoist and link to each other with Nei Tajie winch connecting panel with hoisting with Nei Tajie by being inserted in bearing pin (22) in the connecting pin axis hole.

8. column crane special for movable arm type group tower according to claim 1 is characterized in that: also be provided with one and tear tower suspension bracket (7) open on described body of the tower.

9. column crane special for movable arm type group tower according to claim 8, it is characterized in that: this is torn tower open and comprises suspension bracket and play Hanging roller with suspension bracket, suspension bracket comprises pylon strut, suspension bracket connecting rod and suspension bracket connecting panel, it connects into link span, fixed bias circuit on the suspension bracket connecting panel, it is fixed on the body of the tower by rotating shaft pin; Described Hanging roller links by the suspension bracket suspension hook on lifting rope and the suspension bracket.

10. column crane special for movable arm type group tower according to claim 9, it is characterized in that: described suspension bracket (7) is by turning cylinder (34), suspension bracket connecting panel (35), suspension bracket connecting rod (36,37), suspension bracket suspension hook (38), lifting rope (39), play Hanging roller (40), pylon strut (41), suspension bracket connects bearing pin (42), rotating shaft pin (43) is formed, tear tower open and be positioned at described jacking with on the Nei Tajie (6) with suspension bracket (7), two described rotating shafts (34) suit is fixed on the vertical framework of described jacking with Nei Tajie (6) up and down, on turning cylinder (34), connect firmly suspension rod connecting panel (35), go up an end of difference hinged described suspension bracket connecting rod (36) and pylon strut (41) at the suspension rod connecting panel (35) of two upper and lower settings, the other end of suspension bracket connecting rod (36) connects an end of suspension bracket connecting rod (37), the other end of suspension bracket connecting rod (37) and pylon strut (41) and suspension bracket suspension hook (38) link together, and go up by lifting rope (39) at this suspension bracket suspension hook (38) and have hung Hanging roller (40).

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