CN111847279A - Movable arm tower crane steel wire rope driving type movable counterweight device - Google Patents
Movable arm tower crane steel wire rope driving type movable counterweight device Download PDFInfo
- Publication number
- CN111847279A CN111847279A CN202010741593.2A CN202010741593A CN111847279A CN 111847279 A CN111847279 A CN 111847279A CN 202010741593 A CN202010741593 A CN 202010741593A CN 111847279 A CN111847279 A CN 111847279A
- Authority
- CN
- China
- Prior art keywords
- steel wire
- wire rope
- arm
- balance arm
- counterweight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 36
- 239000010959 steel Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract description 18
- 230000008859 change Effects 0.000 abstract description 5
- 230000008569 process Effects 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/66—Outer or upper end constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a steel wire rope driving type movable counterweight device of a luffing jib tower crane, which comprises a balance arm and an arm support, wherein the inner sides of the balance arm and the arm support are connected together; the inner part of the balance arm and the lower part of the middle part are respectively supported on the rotary platform through an A-shaped frame and an inclined bracket, and the upper part is connected with a propeller strut; a counterweight trolley which can move left and right along the lower part of the balance arm is arranged at the lower part of the balance arm; one ends of a steel wire rope I and a steel wire rope II are connected to the arm support, the other end of the steel wire rope I is connected to the front end of the counterweight trolley in a tensioning mode through a propeller strut and a fixed pulley on the outer side of the balance arm, and the other end of the steel wire rope II is connected to the rear end of the counterweight trolley in a tensioning mode through a fixed pulley on the arm support, a rotary platform and the inner side of the balance arm. According to the invention, the counterweight trolley is driven to move by the two steel wire ropes by utilizing the change of the working amplitude of the arm support, so that the counterweight movement is realized, the difference value of forward bending moment and backward bending moment is effectively reduced, the precision of bending moment balance is improved, and the overall safety of the tower crane is improved.
Description
Technical Field
The invention belongs to the technical field of counterweight devices, and relates to a steel wire rope driving type movable counterweight device of a luffing jib tower crane.
Background
At present, with the rapid development of the building industry, the demand of tower cranes is increasing, and for high-rise and super high-rise building construction, the application of luffing jib tower cranes is more and more extensive due to the limitation of tower crane operation space and the convenience of tower group operation. In the process of amplitude variation of the movable arm amplitude-varying tower crane, because the counterweight is fixed at the designated position of the balance arm, the back-tilting bending moment generated by the counterweight remains unchanged, and the front-tilting bending moment generated by the self weight of the arm support, the hoisting weight and the like changes along with the change of the amplitude, so that the difference value of the front-tilting bending moment and the back-tilting bending moment changes constantly, the fluctuation is large, and the bearing capacity and the safety of the tower crane are influenced.
In order to reduce the difference between the forward bending moment and the backward bending moment as much as possible, the relation between the movable balance weight and the working amplitude is established, the forward bending moment change caused by the self weight of the arm support and the change of the amplitude of the hanging weight is counteracted as much as possible, the mutual balance of the forward bending moment and the backward bending moment is ensured to a certain extent, the stress of the tower crane rotary support and the tower body structure is improved, and the bearing capacity and the safety are improved.
Disclosure of Invention
The invention aims to provide a movable counterweight device driven by a steel wire rope of a luffing jib tower crane, which has reasonable design and ingenious conception, can effectively solve the problem of overlarge fluctuation of the difference value of forward bending moment and backward bending moment in the luffing jib tower crane luffing process, and improves the bearing capacity and safety of the luffing jib tower crane.
The technical scheme adopted by the invention is as follows: the device comprises a balance arm and an arm support, wherein the inner sides of the balance arm and the arm support are connected together; the inner part of the balance arm and the lower part of the middle part are respectively supported on the rotary platform through an A-shaped frame and an inclined bracket, and the upper part is connected with a propeller strut; the method is characterized in that: a counterweight trolley which can move left and right along the lower part of the balance arm is arranged at the lower part of the balance arm; one ends of a steel wire rope I and a steel wire rope II are connected to the arm support, the other end of the steel wire rope I is connected to the front end of the counterweight trolley in a tensioning mode through a propeller strut and a fixed pulley on the outer side of the balance arm, and the other end of the steel wire rope II is connected to the rear end of the counterweight trolley in a tensioning mode through a fixed pulley on the arm support, a rotary platform and the inner side of the balance arm.
The counterweight trolley is controlled by two steel wire ropes to move along the lower part of the balance arm, and the counterweight trolley drives to and away from the rotation center. The movement limit distance of the counterweight trolley is related to the position of a connection point of the steel wire rope on the arm support, and the larger the turning radius of the steel wire rope connection point is, the larger the movement limit distance of the trolley is.
The invention has the following advantages:
1. according to the invention, the counterweight trolley is driven to move by the two steel wire ropes by utilizing the change of the working amplitude of the arm support, so that the counterweight movement is realized, the difference value of forward bending moment and backward bending moment is effectively reduced, the precision of bending moment balance is improved, and the overall safety of the tower crane is improved.
2. The counterweight moving mechanism has a simple structure and ingenious design, does not need to add an additional driving mechanism, and can realize counterweight movement by utilizing the movement of the arm support in the amplitude variation process.
3. According to the invention, the movement limit distance of the counterweight trolley can be changed by adjusting the position of the connecting point of the steel wire rope and the arm support, and different types of tower cranes can better realize bending moment balance.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in the figure, the invention comprises a balance arm 2 and an arm support 7 which are connected together through a pin shaft at the inner sides. The inner part and the lower part of the middle part of the balance arm 2 are respectively supported on the rotary platform 4 through an A-shaped frame 5 and an inclined bracket 9, and the upper part is connected with a propeller strut 1. The lower part of the balance arm 2 is provided with a counterweight trolley 3 which can move left and right along the lower part. One end of each of the steel wire rope I8 and the steel wire rope II6 is connected to the arm support 7. The other end of the steel wire rope I8 is connected with the front end of the counterweight trolley 3 in a tensioning way after passing through a fixed pulley on the propeller strut 1 and outside the balance arm 2. The other end of the steel wire rope II6 is connected with the rear end of the counterweight trolley 3 in a tensioning way after passing through the fixed pulleys on the arm support 7, the rotary platform 4 and the inner side of the balance arm 7.
Two bottom ends of the propeller strut 1 are respectively connected with two sides of the upper part of the balance arm 2 through pin shafts.
The apex angle of A type frame is connected in 2 inboard lower parts of balance arm, and two bottoms are connected on 4 upper portions of rotary platform.
The counterweight trolley 3 comprises a plurality of sliding wheels 3-1 which are connected with the lower part of the balance arm 2 in a sliding way, and a suspension cage 3-2 with a counterweight 3-3 arranged in the suspension cage is suspended at the lower part of the sliding wheels 3-1.
According to the invention, the arm support 7 is used as a driving part, when the working amplitude is changed, one steel wire rope is pulled to enable the other steel wire rope to be loosened so as to drive the counterweight trolley 3 to move, and thus the amplitude of moving the counterweight is changed.
The specific engineering process is as follows:
1) in the process of changing the working amplitude, a steel wire rope connected with the arm support 7 moves around the fixed pulley to drive the counterweight trolley 3 to move;
2) in the process of increasing the amplitude, namely in the process of reducing the angle between the arm support 7 and the horizontal plane, the steel wire rope I8 pulls the counterweight trolley 3 to move in the direction far away from the rotation center through the two fixed pulleys on the propeller strut 1 and the two fixed pulleys on the outer side of the balance arm 2, the amplitude of moving the counterweight is increased, and at the moment, the steel wire rope II6 is in a loose state;
3) in the process of amplitude reduction, namely in the process of increasing the angle between the arm support 7 and the horizontal plane, the steel wire rope II6 pulls the counterweight trolley 3 to the rotation center through the fixed pulleys on the arm support 7, the rotation platform 4 and the inner side of the balance arm 2, so that the amplitude of moving the counterweight is reduced, and at the moment, the steel wire rope I8 is in a loose state.
Claims (2)
1. A steel wire rope driving type movable counterweight device of a luffing jib tower crane comprises a balance arm (2) and an arm support (7) which are connected together at the inner sides; the inner part and the lower part of the middle part of the balance arm (2) are respectively supported on the rotary platform (4) through an A-shaped frame (5) and an inclined bracket (9), and the upper part of the balance arm is connected with a propeller strut (1); the method is characterized in that: a counterweight trolley (3) which can move left and right along the lower part of the balance arm (2) is arranged at the lower part of the balance arm; one ends of a steel wire rope I (8) and a steel wire rope II (6) are connected to an arm support (7), the other end of the steel wire rope I (8) is connected to the front end of the counterweight trolley (3) in a tensioning mode through fixed pulleys on the A-bracket (1) and on the outer side of the balance arm (2), and the other end of the steel wire rope II (6) is connected to the rear end of the counterweight trolley (3) in a tensioning mode through fixed pulleys on the arm support (7), the rotary platform (4) and on the inner side of the balance arm (2).
2. The boom tower crane steel wire rope drive type movable counterweight device according to claim 1, wherein: the counterweight trolley (3) comprises a plurality of sliding wheels (3-1) which are connected with the lower part of the balance arm (2) in a sliding way, and a suspension cage (3-2) with a built-in counterweight block (3-3) is suspended at the lower part of the sliding wheels (3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010741593.2A CN111847279A (en) | 2020-07-29 | 2020-07-29 | Movable arm tower crane steel wire rope driving type movable counterweight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010741593.2A CN111847279A (en) | 2020-07-29 | 2020-07-29 | Movable arm tower crane steel wire rope driving type movable counterweight device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111847279A true CN111847279A (en) | 2020-10-30 |
Family
ID=72948840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010741593.2A Pending CN111847279A (en) | 2020-07-29 | 2020-07-29 | Movable arm tower crane steel wire rope driving type movable counterweight device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111847279A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115057378A (en) * | 2022-08-05 | 2022-09-16 | 山西省安装集团股份有限公司 | Backward-tipping prevention device of tower crane |
| CN115196524A (en) * | 2021-04-09 | 2022-10-18 | 广东工业大学 | Movable counterweight device of tower crane |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357741A (en) * | 2008-09-27 | 2009-02-04 | 廊坊凯博建设机械科技有限公司 | Movable arm variation-amplitude column crane counterweight automatic synchronization travel mechanism |
| CN201980902U (en) * | 2010-12-17 | 2011-09-21 | 广西建工集团建筑机械制造有限责任公司 | Pre-tightening tension reciprocating symmetrical pull type balancing weight shifter of luffing jib tower crane |
| CN213202174U (en) * | 2020-07-29 | 2021-05-14 | 抚顺永茂建筑机械有限公司 | Movable arm tower crane steel wire rope driving type movable counterweight device |
-
2020
- 2020-07-29 CN CN202010741593.2A patent/CN111847279A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101357741A (en) * | 2008-09-27 | 2009-02-04 | 廊坊凯博建设机械科技有限公司 | Movable arm variation-amplitude column crane counterweight automatic synchronization travel mechanism |
| CN201980902U (en) * | 2010-12-17 | 2011-09-21 | 广西建工集团建筑机械制造有限责任公司 | Pre-tightening tension reciprocating symmetrical pull type balancing weight shifter of luffing jib tower crane |
| CN213202174U (en) * | 2020-07-29 | 2021-05-14 | 抚顺永茂建筑机械有限公司 | Movable arm tower crane steel wire rope driving type movable counterweight device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115196524A (en) * | 2021-04-09 | 2022-10-18 | 广东工业大学 | Movable counterweight device of tower crane |
| CN115196524B (en) * | 2021-04-09 | 2024-04-02 | 广东工业大学 | Tower crane removes counter weight device |
| CN115057378A (en) * | 2022-08-05 | 2022-09-16 | 山西省安装集团股份有限公司 | Backward-tipping prevention device of tower crane |
| CN115057378B (en) * | 2022-08-05 | 2022-11-04 | 山西省安装集团股份有限公司 | Backward-tipping prevention device of tower crane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103848360B (en) | A kind of group tower tower crane being provided with packaged type balance weight system | |
| CN102002936B (en) | Dynamic compactor capable of realizing amplitude-variable followup of A-bracket with arm support | |
| CN111847279A (en) | Movable arm tower crane steel wire rope driving type movable counterweight device | |
| CN115676644B (en) | Anti-swing outdoor portal crane | |
| CN201560066U (en) | Novel light loading and unloading gantry crane | |
| CN102303821B (en) | Luffing tower crane with balanced type suspension arm based on traction luffing of steel rope | |
| CN101913548A (en) | Movable manned elevator and elevator working mechanism thereof | |
| CN103663165A (en) | Intelligentized four-lifting-point auto-compensation balance large lifting assembling device | |
| CN202296907U (en) | Suspension arm balanced movable arm tower crane capable of luffing based on steel rope traction | |
| CN213202174U (en) | Movable arm tower crane steel wire rope driving type movable counterweight device | |
| CN101357743B (en) | Crane hook magnification-changing mechanism of movable arm variation-amplitude crane | |
| CN109650255B (en) | Hanging weight self-balancing system of swing trolley of tower crane | |
| CN102942124A (en) | Tower crane | |
| CN216549326U (en) | Accurate positioning balance system for tower crane | |
| CN215666743U (en) | Spider crane lifting structure | |
| CN201942465U (en) | Steel cable threading and winding system | |
| CN212050210U (en) | Single-line single-beam segment assembled bridge girder erection crane | |
| CN210655823U (en) | Lifting system and engineering machinery | |
| CN210764023U (en) | Crane with anti-swing device | |
| CN203474321U (en) | Tower crane used for constructing and erecting electric transmission line iron towers | |
| CN113148838A (en) | Tower machine holds in palm rope device | |
| CN103723635B (en) | Walking transfer crane | |
| CN106081905A (en) | Gantry container crane suspender actively anti-roll device | |
| CN207877092U (en) | A kind of electric rotary lifting hook crane | |
| CN220376198U (en) | Auxiliary lifting system of tower crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |