CN219058352U

CN219058352U - Roof crane

Info

Publication number: CN219058352U
Application number: CN202320066185.0U
Authority: CN
Inventors: 何斌业; 秦冬冬; 刘勇; 韦开宗
Original assignee: Guangdong Dingsheng Heavy Industry Machinery Co ltd
Current assignee: Guangdong Dingsheng Heavy Industry Machinery Co ltd
Priority date: 2023-01-09
Filing date: 2023-01-09
Publication date: 2023-05-23
Anticipated expiration: 2033-01-09

Abstract

The utility model belongs to the field of tower crane equipment, and discloses a roof crane which comprises an amplitude changing mechanism, a lifting mechanism, a rotating mechanism, a suspension arm, an amplitude changing inhaul cable, a lifting inhaul cable, a tower body, a rotating base fixed at the top of a building, at least two rear pull rods and pull rod foundation feet which are in one-to-one correspondence with the rear pull rods, wherein the pull rod foundation feet are fixedly connected with the top of the building; the upper end of the rear pull rod is rotationally connected with the top of the tower body; the lower part of the rear pull rod is fixedly connected with the pull rod foot margin; the pull rod foot is fixedly connected with the lower part of the rotary base. The roof crane is designed with the rear pull rod which does not rotate along with the rotating base, the rear pull rod can strengthen the strength of the tower body, the load is not attached to the rotating base, and the overall stability and safety are improved.

Description

Roof crane

Technical Field

The utility model belongs to the field of tower crane equipment, and particularly relates to a roof crane.

Background

CN209721420U discloses a roof crane jib self-dismounting device, which comprises a self-dismounting pulley yoke, a jib pull rod connecting plate and a guiding pulley yoke, wherein the guiding pulley yoke is arranged on a jib root section through bolts, the self-dismounting pulley yoke is arranged on an ear plate of an adjacent jib section of the jib section to be dismounted through a pin shaft, one end of the jib pull rod connecting plate is connected with the jib section, the other end of the jib pull rod connecting plate is connected with the jib pull rod, one end of a lifting steel wire rope is fixed on a lifting mechanism, and the other end of the lifting steel wire rope passes through the jib after bypassing the guiding pulley yoke and then bypasses the self-dismounting pulley yoke to be fixedly connected with the steel wire rope of the jib section to be dismounted.

In the scheme, all components are connected to a slewing mechanism, and the slewing mechanism is connected to a roof; the stress is too concentrated, and the safety is required to be improved;

CN106115500a discloses a self-dismantling type roof crane special for super high-rise building and a self-dismantling method, comprising: preparing a field, dismantling a lifting hook, dismantling a lifting wire rope, dismantling a head pulley block, dismantling a lifting arm, installing a steel wire rope for dismantling a tower into a lifting winch, dismantling a balancing weight, dismantling an auxiliary hook head, dismantling an amplitude wire rope, removing the amplitude winch by using the steel wire rope for dismantling the tower and arranging a chain block on an A-shaped tower pull rod, arranging an auxiliary winch on a dismantling tower platform, removing the lifting winch, and sequentially dismantling a slewing mechanism by using the chain block and a derrick mast.

The problem with this solution is the same as CN209721420U.

Based on the above, the technical problems solved by the scheme are as follows: how to improve the safety and stability of the roof hanging.

Disclosure of Invention

The utility model mainly aims to provide a roof crane, which is designed with a rear pull rod which does not rotate along with a rotating base, the rear pull rod can strengthen the strength of a tower body, the load is not attached to the rotating base any more, and the overall stability and the safety are improved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the roof crane comprises an amplitude changing mechanism, a lifting mechanism, a rotating mechanism, a suspension arm, an amplitude changing inhaul cable, a lifting inhaul cable, a tower body and a rotating base fixed at the top of a building, wherein the amplitude changing mechanism is used for driving the amplitude changing inhaul cable, and the amplitude changing inhaul cable is connected to the suspension arm; the lifting mechanism is connected with a lifting inhaul cable; the rotary mechanism is used for driving the rotary base to rotate; the tower body is fixed on the rotating base; one end of the suspension arm is hinged on the tower body; the rear pull rods are connected with the rear pull rods in a one-to-one correspondence manner, and the rear pull rods are connected with the top of the building in a fixed manner; the upper end of the rear pull rod is rotationally connected with the top of the tower body; the lower part of the rear pull rod is fixedly connected with the pull rod foot margin; the pull rod foot is fixedly connected with the lower part of the rotary base.

One of the above technical solutions of the present utility model has at least one of the following advantages or beneficial effects:

the rear pull rod is connected to the pull rod foot which is connected with the roof, the pull rod foot is connected with the lower part of the rotary base at the same time, the lower part of the rotary base is not rotated, and the top of the rear pull rod is connected with the tower body through the bearing or the copper bush, so that the rear pull rod can rotate, the transverse load of the tower body can be transmitted to the roof, the load of the rotary base is reduced, and the safety is improved.

Drawings

FIG. 1 is a front plan view of embodiment 1;

FIG. 2 is a top view of example 1;

fig. 3 is a sectional view A-A of fig. 1 of example 1.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

Referring to fig. 1-3, a roof crane comprises an amplitude changing mechanism, a lifting mechanism, a rotating mechanism, a suspension arm, an amplitude changing cable 1, a lifting cable 2, a tower body and a rotating base 3 fixed on the top of a building, wherein the amplitude changing mechanism is used for driving the amplitude changing cable 1, and the amplitude changing cable 1 is connected to the suspension arm; the lifting mechanism is connected with a lifting inhaul cable 2; the rotary mechanism is used for driving the rotary base 3 to rotate; the tower body is fixed on the rotating base 3; one end of the suspension arm is hinged on the tower body; the building is characterized by further comprising at least two rear pull rods 4 and pull rod foundation feet 5 which are in one-to-one correspondence with the rear pull rods 4, wherein the pull rod foundation feet 5 are fixedly connected with the top of a building; the upper end of the rear pull rod 4 is rotationally connected with the top of the tower body, and particularly can be connected through a copper sleeve or a bearing 6, the outer ring of the bearing 6 is connected with the rear pull rod, and the inner ring of the bearing 6 is connected with the top of the tower body; the lower part of the rear pull rod 4 is fixedly connected with the pull rod foot 5; the pull rod foot 5 is fixedly connected with the lower part of the rotary base 3. The projection of the two rear pull rods 4 on the horizontal plane has a certain included angle, such as 30-90 degrees, and the stability of the two rear pull rods arranged in the embodiment is far better than that of the design of one rear pull rod;

in practical application, firstly, a rotary base 3 and a pull rod foundation 5 are arranged at a proper position on the top of a high-rise building; then a tower body and a suspension arm are arranged on the rotary base 3, and a rear pull rod 4 is connected to a pull rod foundation 5 and the tower body;

the top of the rear pull rod 4 is rotationally connected with the top of the tower body, so that the tower body rotates, the rear pull rod 4 does not rotate, and the rear pull rod 4 can bear the transverse load of the tower body although the rear pull rod 4 does not rotate, so that the strength of the tower body is improved; that is, the load of the tower body can be distributed to the rotating base 3 and the rear pull rod 4, and the overall stability of the tower body can be improved.

Preferably, the slewing mechanism comprises a first motor 7 and a driving gear 8 connected with the power output end of the first motor 7, the driving gear 8 is in transmission connection and meshing with the slewing base 3 through a chain 9, and the pull rod foot 5 is fixedly connected with the lower part of the slewing base 3 through a chassis connecting rod 10; the first motor 7 is fixed on the chassis link 10.

The setting positions of the 3 motors are precisely designed and considered, firstly, the rotating base 3 is required to be driven by a chain 9, so that the first motor 7 can be arranged at a slightly far position, and the first motor 7 can be arranged on a right underframe connecting rod 10 in a space; the limited space on the tower body can be saved.

In this embodiment, the amplitude variation mechanism comprises a second motor 11, a reversing gear box 12 and a first wire coil; the reversing gear box 12 is connected with the power output end of the second motor 11 and a first wire coil (shown in the drawing); the first coil is connected with the luffing cable 1, and the tower body consists of a connecting frame 14 and a tower rod 15; the connecting frame 14 is connected with the rotating base 3 and the tower pole 15, and the upper end of the rear pull rod 4 is rotatably connected with the top of the tower pole 15; the connecting frame 14 is hollow; the first coil is disposed in the hollow portion.

In order to set a proper position for the first coil, the mutual influence among the power mechanisms is reduced, so that a mode of connecting the frame 14 and the tower 15 is designed, the connecting frame 14 and the tower 15 are connected through bolts, the middle part of the connecting frame 14 is hollow, and the first coil is placed in the connecting frame, so that the space is ingeniously utilized.

More preferably, the top of the tower 15 is provided with a first fixed pulley 16, and the luffing cable 1 is connected to a first wire coil by winding around the first fixed pulley 16.

In the embodiment, the suspension arm is connected with a luffing pull rod, and the free end of the luffing pull rod is connected with a second fixed pulley 17; the first fixed pulley 16 and the second fixed pulley 17 (the second fixed pulley 17 can be regarded as a movable pulley relative to the first fixed pulley 16) are provided with a plurality of grooves; the amplitude-variable inhaul cable 1 is connected to the first wire coil after sequentially bypassing the first fixed pulley 16 and the plurality of grooves of the second fixed pulley. The winding formed by the first fixed pulley 16 and the second fixed pulley 17 with multi-groove design is a labor-saving pulley block;

as a further optimization of the embodiment, the rotating base 3 is connected with a cantilever connecting seat 18; the boom and the lifting mechanism are connected to the boom connection mount 18. The cantilever connection 18 protrudes from the swivel base 3, which gives the possibility to arrange the hoisting mechanism and the cantilever in a top-to-bottom arrangement;

the first motor 7 is fixed on the underframe connecting rod 10, the first coil is arranged in the connecting frame 14, and the lifting mechanism and the cantilever are connected on the cantilever connecting seat 18 in a vertically arranged mode, so that the integral structure of the tower body can be designed in a simplified mode.

Preferably, the cantilever consists of a first arm section 19, a plurality of second arm sections 20 and a third arm section 21 which are connected in sequence; the first arm section 19 is connected to the cantilever connection base 18; the third arm section 21 is connected with a lifting hook through a lifting cable 2; the other end of the lifting cable 2 is connected to a lifting mechanism, the lifting mechanism comprises a third motor 22 and a second wire coil 13 driven by the third motor 22, and the lifting cable 2 is connected to the second wire coil 13. The third motor 22 is fixed to the cantilever connection 18.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. The roof crane comprises an amplitude changing mechanism, a lifting mechanism, a rotating mechanism, a suspension arm, an amplitude changing inhaul cable, a lifting inhaul cable, a tower body and a rotating base fixed at the top of a building, wherein the amplitude changing mechanism is used for driving the amplitude changing inhaul cable, and the amplitude changing inhaul cable is connected to the suspension arm; the lifting mechanism is connected with a lifting inhaul cable; the rotary mechanism is used for driving the rotary base to rotate; the tower body is fixed on the rotating base; one end of the suspension arm is hinged on the tower body; the building is characterized by further comprising at least two rear pull rods and pull rod foundation feet which are in one-to-one correspondence with the rear pull rods, wherein the pull rod foundation feet are fixedly connected with the top of a building; the upper end of the rear pull rod is rotationally connected with the top of the tower body; the lower part of the rear pull rod is fixedly connected with the pull rod foot margin; the pull rod foot is fixedly connected with the lower part of the rotary base.

2. The roof suspension of claim 1, wherein the swing mechanism comprises a first motor, a drive gear coupled to a power take off of the first motor, the drive gear and the swing base being engaged by a chain drive connection.

3. The roof crane according to claim 2, wherein the pull rod foot is fixedly connected with the lower part of the swivel base through a bottom frame connecting rod; the first motor is fixed on the chassis connecting rod.

4. The roof suspension of claim 1, wherein the luffing mechanism comprises a second motor, a reversing gearbox, and a first wire coil; the reversing gear box is connected with the power output end of the second motor and the first coil; the first wire disc is connected with an amplitude-variable inhaul cable.

5. The roof hoist of claim 4, characterized in that the tower is comprised of a connection frame and a tower mast; the connecting frame is connected with the rotary base and the tower pole, and the upper end of the rear pull rod is rotationally connected with the top of the tower pole; the connecting frame is internally provided with a hollow part; the first coil is disposed in the hollow portion.

6. The roofing hanger of claim 5, wherein a first fixed pulley is provided at a top of the tower, and the luffing cable is connected to the first wire coil around the first fixed pulley.

7. The roof crane of claim 6, wherein the boom is connected with a luffing pull rod, and the free end of the luffing pull rod is connected with a second fixed pulley; a plurality of grooves are formed in the first fixed pulley and the second fixed pulley; the amplitude-variable inhaul cable is connected to the first wire coil after sequentially bypassing the first fixed pulley and the second fixed pulley.

8. The roof crane of claim 1, wherein the swivel base is connected with a cantilever connection base; the cantilever and the lifting mechanism are connected to the cantilever connecting seat.

9. The roof suspension of claim 8, wherein the cantilever comprises a first arm segment, a plurality of second arm segments, and a third arm segment connected in sequence; the first arm section is connected to the cantilever connecting seat; the third arm section is connected with a lifting hook through a lifting inhaul cable; the other end of the lifting cable is connected to a lifting mechanism.

10. The roof hoist of claim 8, characterized in that the hoist mechanism includes a third motor, a second wire coil driven by the third motor, and the hoist cable is connected to the second wire coil.