CN217025112U - A tower crane with non-standard section jib - Google Patents

Abstract

The utility model relates to the technical field of building engineering, and aims to solve the technical problem that a space interference conflict exists between an existing tower crane and an adjacent building and between the existing tower crane. The crane boom is formed by connecting a plurality of boom sections, the length of the second boom section is adjusted according to actual needs, the length of the whole crane boom can be adjusted, and the balance degree corresponding to the type and the number of the balancing weights is adjusted, so that the problem of space interference conflict between the tower crane and a building and between adjacent tower cranes is avoided, and the safety of the main structure of the tower crane is also ensured.

Description

A tower crane with non-standard section jib

technical field

The utility model relates to the technical field of construction engineering, in particular to a tower crane with a non-standard section jib.

Background technique

Tower cranes are commonly used equipment in building construction. The existing tower crane components are made of standard parts or standard sections, which can be adapted to most building construction occasions. However, tower cranes in multi-building projects should not only consider material lifting, disassembly and assembly, but also the positional relationship with adjacent tower cranes and structures. If the construction progress changes, such as buildings with slow progress around them, the progress is faster than expected. It is very likely that there is a conflict between the main structure of the tower and the adjacent buildings and the boom of the adjacent tower crane.

In view of this, a non-standard tower crane is required to solve the problem of space interference conflict with adjacent tower cranes.

Utility model content

The purpose of the utility model is to provide a tower crane with a non-standard section jib, so as to solve the technical problem of space interference conflict between the existing tower crane and adjacent buildings and adjacent tower cranes.

In order to achieve the above-mentioned purpose, the concrete technical scheme of the tower crane of a kind of non-standard section jib of the present utility model is as follows:

A tower crane with a non-standard section jib comprises a tower body and a base for fixing the bottom of the tower body, an upper part of the tower body is provided with a sleeve frame, a sleeve frame platform is installed on the sleeve frame, the tower The top of the body is provided with a slewing platform, a control room is installed on the slewing platform, two ends of the slewing platform are respectively connected with a boom and a balance arm, the boom is provided with a hook, and the balance arm is A counterweight is arranged on the boom, the boom includes a first boom section, a second boom section, a third boom section and an boom tip that are connected end to end in sequence, and a wind deflector is installed on the boom. The boom is formed by connecting the multi-boom section structure, and the length of the second boom section can be adjusted according to the actual needs, and the length of the entire boom can be adjusted. There is a problem of space interference and conflict with adjacent buildings and adjacent tower cranes, which also ensures the safety of the main structure of the tower crane. By setting the wind deflector on the boom, the difference between the working wind load of the boom and the balance arm can be reconciled, and the working resistance of the tower crane can be reduced, so that the boom can be guaranteed by the weather vane effect when the strong wind strikes in the non-working state. in a downwind direction.

Preferably, the wind deflector is fixed on the inclined web bar of the boom through U-shaped bolts.

Further, a backing plate is arranged between the nut and the wind deflector to reduce pressure and stress.

Further, the length of the second boom segment is 7m-9.5m.

Preferably, the hook is connected to the luffing trolley through a luffing wire rope, and the luffing trolley is driven by the luffing wire rope and can move along the boom.

Further, the length, width and height of the second boom section are 7.5m, 1.1m and 2.16m respectively, and the weight of the second boom section is 1.01t

The tower crane of a non-standard section jib provided by the utility model has the following advantages:

The boom is formed by connecting the multi-boom section structure, and the length of the second boom section can be adjusted according to the actual needs, and the length of the entire boom can be adjusted. There is a problem of space interference and conflict with adjacent buildings and adjacent tower cranes, which also ensures the safety of the main structure of the tower crane. By setting the wind deflector on the boom, the difference between the working wind load of the boom and the balance arm can be reconciled, and the working resistance of the tower crane can be reduced, so that the boom can be guaranteed by the weather vane effect when the strong wind strikes in the non-working state. in a downwind direction.

Description of drawings

Fig. 1 is the tower crane front view of a kind of non-standard section jib provided by the utility model;

Fig. 2 is the multi-boom structure diagram of the jib provided by the utility model;

Fig. 3 is the installation structure diagram of the wind deflector provided by the utility model;

Fig. 4 is a partial enlarged view for A in Fig. 3;

Fig. 5 is the top structure diagram of the tower crane tower body of the non-standard section jib provided by the utility model;

FIG. 6 is a structural diagram of the connection of the boom, the luffing trolley and the hook provided by the utility model.

In the figure: 10, base; 11, tower body; 111, set frame; 112, set frame platform; 113, control room; 12, boom; 121, first boom; 122, second boom; 123 , the third arm section; 124, the tip of the arm; 13, the balance arm; 14, the counterweight; 15, the hook; 16, the slewing platform; 17, the windshield; , U-bolt; 184, backing plate; 19, luffing trolley; 20, luffing wire rope.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

1 to 6 , the present invention provides a tower crane with a non-standard section jib, which includes a tower body 11 and a base 10 for fixing the bottom of the tower body 11 . The upper part of the tower is provided with a set frame 111, a set frame platform 112 is installed on the set frame 111, a rotary platform 16 is provided on the top of the tower body 11, a control room 113 is installed on the rotary platform 16, and two ends of the rotary platform 16 are respectively connected with The boom 12 and the balance arm 13. The boom 12 is provided with a hook 15. The balance arm 13 is provided with a counterweight 14 and a lifting mechanism. The second boom section 122 , the third boom section 123 and the boom tip 124 , and a wind deflector 17 is installed on the boom 12 .

The boom is formed by the multi-boom structure connection of the first boom section 121, the second boom section 122, the third boom section 123 and the boom tip 124, especially by adjusting the length of the second boom section 122 according to actual needs, the entire crane can be adjusted The length of the arm is adjusted, and the corresponding balance is adjusted by setting the type and number of counterweight blocks, which not only avoids the problem of space interference and conflict between the tower crane and adjacent buildings and adjacent tower cranes, but also ensures the safety of the main structure of the tower crane.

The wind deflector 17 is used to adjust the difference between the working wind loads of the boom 12 and the balance arm 13, reduce the working resistance of the tower crane, and ensure that the boom 12 is in the downwind direction through the weather vane effect when a strong wind strikes in the non-working state.

Wherein, the wind deflector 17 is fixed on the inclined web rod 18 of the boom 12 through U-shaped bolts 182 and nuts, a backing plate 184 is provided between the nut and the wind deflector 17, and the wind deflector 17 and the backing plate 184 are provided with a backing plate 184. Through the installation holes, the U-shaped bolts 182 pass through the wind deflector 17 and the backing plate 184, and are fixed by nuts. The outer ends of the U-bolts 182 are adjacent to the grab bars 181 .

Preferably, the length of the second arm section 122 is 7m˜9.5m.

In one embodiment, the length, width and height of the first boom section 121 are divided into 10m, 1.1m and 2.56m, the number of the first boom section 121 is 2.02t; the length, width and height of the second boom section 122 are respectively are 7.5m, 1.1m and 2.16m, the number of the second boom section 122 is 1.01t; the length, width and height of the third boom section 123 are respectively 10m, 1.1m and 2.32m, and the number of the third boom section 123 is 1.03t; the length, width and height of the arm tips 124 are 0.82m, 0.84m, and 1.87m, respectively, and the number of the arm tips 124 is 0.1t.

Wherein, in actual adjustment, the second boom section 122 is preferably adjusted. In one embodiment, the distance between the wind deflector provided on the second boom section and one end of the second boom section is 2250 mm.

In one embodiment, the counterweight 14 includes a first type of counterweight, a second type of counterweight and a third type of counterweight, the weights of which are 2.8t, 2.0t and 1.3t, respectively, and the first type of counterweight The number of blocks is two, the number of weight blocks of the second type is two, and the number of weight blocks of the third type is one.

Specific installation method:

Taking the length of the boom 12 as 27.5m as an example, the boom 12 is assembled on the ground, and the wind deflector 17 is installed. On the oblique abdominal rod 18.

Hang the rope according to the position of the center of gravity of the boom assembly with a boom length of 27.5m at 9.0m and 5m before and after, and lift the boom to the tower head. Connect the boom to the tower head with a pin.

When installing the 27.5m arm length, the car crane slewing platform is 56m away from the center of the tower crane body, 48m away from the lifting point of the boom, the crane arm is 73.6m long, the allowable lifting weight is 7.3t, the lifting height is about 55.8m, and the elevation angle is 49.2 °. The hook 15 is 25T and the weight is 500kg.

Install the counterweight

The counterweight blocks are placed in sequence by the first counterweight block, and the left and right are placed in the center. The end face of the counterweight pin must extend beyond the counterweight support plate.

When installing the counterweight, the slewing center of the truck crane is 56m from the center of the tower body, 48m from the lifting point of the jib, the length of the crane arm is 73.6m, the allowable lifting weight is 7.3t, the lifting height is about 55.8m, and the elevation angle is 49.2° . Among them, the hook is 25T and the weight is 500kg.

Thread the wire rope

1) Use the luffing mechanism to drive the luffing trolley 19 to the arm base of the boom 12, place a temporary mounting bracket on the ground directly below the luffing trolley 19, and then fix the hook 15 on the bracket.

2) Pull out the rope head of the hoisting rope from the hoisting drum, start the downshift of the hoisting mechanism at the same time, and pass it through the jib lifting weight limiter pulley, the jib arm root guide pulley in turn, and pass it through The pulley block of the luffing trolley and the hook 15.

3) Use two rope clips to fix the hoisting rope at the appropriate position on the luffing trolley 19, and leave a margin of not less than 1.2 meters.

4) Remove the wedge joint from the anti-twist device at the tip of the arm, connect the hoisting rope to it, and tie the tail of the hoisting rope 1 with a soft steel wire, then fold it back and fix it with a fixed rope clip.

5) Slowly start the hoisting mechanism, lift the hook about 1m away from the upper plane of the bracket, and check whether the hoisting wire rope is firmly fixed.

6) Start the luffing mechanism to drive the luffing trolley 19 and the hook 15 to the tip of the boom.

7) Use the pin and split pin to fix the wedge joint on the arm tip anti-twist device, slowly lower the trolley to the bracket under the arm tip 124, remove the rope clip that fixes the hoisting rope on the luffing trolley 19, and release the lift. Lift the wire rope.

By adopting the dobby structure, it can be applied to actual construction, and the length of the boom can be easily adjusted, avoiding the adjacent main structure that has been constructed to the standard floor, and ensuring the safety and progress of the project construction.

To sum up, the utility model provides a tower crane with a non-standard section boom, which is connected by a multi-boom section structure to form a boom, and the length of the second boom section can be adjusted according to actual needs, and the length of the entire boom can be adjusted. , and adjust the corresponding balance by setting the type and quantity of counterweight blocks, which not only avoids the problem of space interference and conflict between the tower crane and adjacent buildings and adjacent tower cranes, but also ensures the safety of the main structure of the tower crane. By setting the wind deflector on the boom, the difference between the working wind loads of the boom and the balance arm can be reconciled, and the working resistance of the tower crane can be reduced, so that the boom can be guaranteed by the weather vane effect when a strong wind strikes in the non-working state. in a downwind direction.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection of the utility model.

Claims (6)

1. A tower crane with a non-standard crane boom comprises a tower body (11) and a base (10) for fixing the bottom of the tower body (11), the upper part of the tower body (11) is provided with a sleeve frame (111), a sleeve frame platform (112) is arranged on the sleeve frame (111), a rotary platform (16) is arranged at the top end of the tower body (11), a control room (113) is arranged on the rotary platform (16), two ends of the rotary platform (16) are respectively connected with a crane arm (12) and a balance arm (13), a lifting hook (15) is arranged on the lifting arm (12), a balancing weight (14) is arranged on the balancing arm (13), the wind screen is characterized in that the crane boom (12) comprises a first boom section (121), a second boom section (122), a third boom section (123) and a boom tip (124) which are sequentially connected end to end, and a wind screen (17) is mounted on the crane boom (12).

2. A tower crane according to claim 1, wherein the crane boom (12) comprises a diagonal web member (18), and the wind deflector (17) is fixed to the diagonal web member (18) by a U-bolt (182) and a nut.

3. A tower crane according to claim 2, wherein a backing plate (184) is provided between the nut and the wind deflector (17).

4. A tower crane according to claim 3, wherein the second arm segment (122) has a length of 7-9.5 m.

5. The tower crane of a non-standard jib boom according to claim 4, wherein the lifting hook (15) is connected to a luffing trolley (19) through a luffing wire rope (20), and the luffing trolley (19) is driven by the luffing wire rope (20) to move along the jib (12).

6. A tower crane according to claim 5, wherein the second arm section (122) has a length, width and height of 7.5m, 1.1m and 2.16m, respectively, and the second arm section (122) has a weight of 1.01 t.

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