CN202609837U - Luffing rope tensioning device of tower crane - Google Patents
Luffing rope tensioning device of tower crane Download PDFInfo
- Publication number
- CN202609837U CN202609837U CN 201220172463 CN201220172463U CN202609837U CN 202609837 U CN202609837 U CN 202609837U CN 201220172463 CN201220172463 CN 201220172463 CN 201220172463 U CN201220172463 U CN 201220172463U CN 202609837 U CN202609837 U CN 202609837U
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- CN
- China
- Prior art keywords
- rope
- luffing
- tensioning device
- tower crane
- rope tensioning
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a luffing rope tensioning device of a tower crane. The luffing rope tensioning device is suitable for tensioning a pulling rope of a luffing trolley of an inverted triangle horizontal arm tower crane. A rope tensioning device bracket is arranged on the upper flat surface of a tower crane horizontal arm, a horizontal slide way is arranged on the rope tensioning device bracket, a fixed pulley is arranged at one end of the rope tensioning device bracket, the end of the rope tensioning device bracket is close to the tip of the horizontal arm, a movable pulley which is connected with a lever block is arranged on the horizontal slide way, the movable pulley can transversely move along the horizontal slide way, and the pulling rope drawn from the luffing trolley winds a rope supporting wheel on an arm bracket, the fixed pulley on the rope tensioning device and the movable pulley on the rope tensioning device and then returns to a luffing hoisting mechanism. According to the luffing rope tensioning device of the tower crane, the purpose of tensioning the pulling rope of the luffing trolley is achieved through the movement of the two-time fixed pulley; on the condition that structural safety is fully guaranteed, the weight of the luffing trolley is reduced, loading performances of the tower crane are improved, stress states of the tower crane are effectively improved, and inconvenience of luffing rope tensioning on the luffing trolley is avoided; and the luffing rope tensioning device has the advantages of being flexible and convenient to operate, human-friendly, attractive in appearance and the like.
Description
One, technical field
The utility model belongs to the auxiliary facilities of tower crane, is specifically related to a kind of amplitude variation trolley hauling rope tightening device of inverted triangle horizontal arm tower machine.
Two, background technology
After horizontal arm carriage amplitude varying formula tower crane used a period of time, its luffing haulage cable was prone to be elongated and sagging under tension.Excessive when sagging amount of deflection, just hauling rope is carried out tensioning can cause that amplitude variation trolley starts, braking is asynchronous with traction as untimely, operation does not steadily produce impact shock, can cause disconnected cable protection device generation misoperation when serious and cause thing.Therefore in operation process, need often the haulage cable on the amplitude variation trolley to be implemented tensioning.Usually be employed in modes such as ratchet or tight rope screw rod are set on the amplitude variation trolley with the tensioning of luffing steel rope, it is cumbersome that these modes are operated, and occurs not removing to carry out tight rope because of disliking trouble easily and operate, thereby cause the accident that should not take place.Therefore, having efficient, simple, failure-free luffing steel rope tight rope device is very important to device of carriage amplitude varying tower crane.
Three, summary of the invention
The purpose of the utility model provides a kind of tower crane amplitude variation tight rope device, can alleviate amplitude variation trolley weight effectively, improves the tower crane load performance, makes the operation of tower machine luffing tight rope easier, safe, easy to operate.
The technical scheme that the utility model adopts is: tower crane amplitude variation tight rope device is that the plane is provided with the tight rope appliance stand on tower machine horizontal arm; A horizontal slideway is arranged on the tight rope appliance stand; On the tight rope appliance stand, fixed pulley is arranged near arm point one end; On horizontal slideway, have connection hand to remove the movable pulley of cucurbit, movable pulley can be along horizontal slideway side travel; Return the luffing hoisting mechanism behind the holder rope sheave on the hauling rope pile warp jib of drawing by amplitude variation trolley and the movable pulley of tight rope device, the fixed pulley.
The utility model reaches the slack-free purpose of in than short travel, accomplishing longer luffing haulage cable through moving of two multiplying power movable pulleys, not only has the advantage of existing luffing tight rope version, and also has following distinguishing feature:
A, fully guaranteeing to alleviate amplitude variation trolley weight under the situation of structural safety, strengthened the overall load performance of crane arm, improve its strained condition effectively.
B, simple in structure, flexible operation is easy, its design operation height ergonomic requirement; Avoided on amplitude variation trolley, carrying out the inconvenience that brought in the process of tensioning luffing rope.
C, manufacturing process are simple, and profile is light and handy, smoothness attractive in appearance, and human oriented design is installed and put just, and is harmonious, unified with inverted triangle horizontal arm tower machine, has a style of one's own.And can satisfy different demands and place, also can repeat to place.
Four, description of drawings
Fig. 1 is for using the arm frame of tower crane structural representation of the utility model;
Fig. 2 is for using the arm frame of tower crane baudrier scheme drawing of the utility model;
Fig. 3 is the utility model structural representation;
Fig. 4 is the rotary block structural representation on the horizontal slideway of the utility model;
Fig. 5 is the lateral plan of Fig. 4.
Five, the specific embodiment
The utility model has been cancelled original tight rope device that is arranged on the amplitude variation trolley; Become the principle of multiplying power according to movable pulley; On jib 1, set up a fixing tight rope appliance stand 8, on tight rope appliance stand 8 tops horizontal slideway 9 has been arranged, fixed pulley 6 is arranged on tight rope appliance stand 8 near arm point one end; Movable pulley 5 places in the horizontal slideway 9, and the end that hand is removed cucurbit 3 is connected on the wheel carrier of movable pulley 5.
A plurality of well-distributed U-lags are arranged on horizontal slideway 9, in U-lag, place rotary block 4, rotary block 4 is that a side is straight, the plate of a side boss, and there is a 4-1 centre, and its both sides axle head rides in the U-lag of horizontal slideway 9.The similar ratchet of the effect of rotary block 4; When the outside layback of movable pulley 5, to run into the rounded convex of rotary block 4 and can pass through, opposite sense is then run into the straight sided of rotary block 4; Stopped and can not return, thereby prevented the resilience after hauling rope 2 tensionings effectively.
The baudrier of luffing hauling rope 2 is fixed pulleys 6 of the hauling rope 2 pile warp tight rope devices of being drawn by luffing hoisting mechanism 10; Unroll again to the movable pulley 5 of tight rope device; Holder rope sheave 7 on jib, arm point holder rope sheave 11, amplitude variation trolley 13, arm root holder rope sheave 12 are got back to luffing hoisting mechanism 10 then again.
Claims (2)
1. tower crane amplitude variation tight rope device; It is characterized in that: the plane is provided with tight rope appliance stand (8) on tower machine horizontal arm; A horizontal slideway (9) is arranged on the tight rope appliance stand (8); Upward near arm point one end fixed pulley (6) is arranged at tight rope appliance stand (8), on horizontal slideway (9), have connection hand to remove the movable pulley of cucurbit (3) (5), movable pulley (5) can be along horizontal slideway (9) side travel; Return luffing hoisting mechanism (10) behind the holder rope sheave (7) on hauling rope (2) the pile warp jib (1) of drawing by amplitude variation trolley (13) and the movable pulley (5) of tight rope device, the fixed pulley (6).
2. tower crane amplitude variation tight rope device according to claim 1; It is characterized in that: a plurality of well-distributed U-lags are arranged on horizontal slideway (9); In U-lag, place rotary block (4); Rotary block (4) is that a side is straight, the plate of a side boss, and there is axle (4-1) centre, and its both sides axle head rides in the U-lag of horizontal slideway (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220172463 CN202609837U (en) | 2012-04-21 | 2012-04-21 | Luffing rope tensioning device of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220172463 CN202609837U (en) | 2012-04-21 | 2012-04-21 | Luffing rope tensioning device of tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202609837U true CN202609837U (en) | 2012-12-19 |
Family
ID=47343552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220172463 Expired - Fee Related CN202609837U (en) | 2012-04-21 | 2012-04-21 | Luffing rope tensioning device of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202609837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803432A (en) * | 2014-02-13 | 2014-05-21 | 山东大汉建设机械有限公司 | Twofold luffing device for trolley luffing tower crane |
-
2012
- 2012-04-21 CN CN 201220172463 patent/CN202609837U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103803432A (en) * | 2014-02-13 | 2014-05-21 | 山东大汉建设机械有限公司 | Twofold luffing device for trolley luffing tower crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160921 Address after: 101300, 12, Shuanghe Avenue, Lin River Industrial Development Zone, Beijing, Shunyi District Patentee after: Beijing Yong Mao construction machine Manufacturing Co., Ltd Address before: 113126 Fushun province Liaoning City Shuncheng District Yuan Road No. 3 Patentee before: Fushun Yongmao Construction Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20210421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |