CN201372168Y - Mast top pulley device of mast crane - Google Patents
Mast top pulley device of mast crane Download PDFInfo
- Publication number
- CN201372168Y CN201372168Y CN200920136510U CN200920136510U CN201372168Y CN 201372168 Y CN201372168 Y CN 201372168Y CN 200920136510 U CN200920136510 U CN 200920136510U CN 200920136510 U CN200920136510 U CN 200920136510U CN 201372168 Y CN201372168 Y CN 201372168Y
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- CN
- China
- Prior art keywords
- mast
- pulley
- pulley device
- crane
- shafts
- 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 relates to a pulley device, in particular to a mast top pulley device of a mast crane, and the structural feature thereof includes that the mast top pulley device further comprises two sets of pulley devices which are correspondingly arranged on top ends of two mast bodies respectively. The mast top pulley device is characterized in that the two sets of pulley devices are respectively arranged on two sides of the top ends of the mast bodies, a stressed center line of each pulley device is overlapped or parallel to an axle line of each mast body, acting force of a drawing rope to the pulley devices firstly acts on the mast bodies and then spreads to a truss rod. Because each mast body is a main component of each mast, the mast top pulley device enables the masts to be stressed uniformly and fine in acting point and high in safety. Further, the mast top pulley device brings an unexpected technical effect, namely simplifies mounting of pulley blocks and saves mounting space of the total mast crane.
Description
Technical field
The utility model relates to the masthead pulley gear of a kind of pulley gear, particularly a kind of mast crane.
Background technology
The mast of mast crane includes shaft and truss rod, shaft is two, all perpendicular to ground, truss rod is connected between two shafts as a kind of member of reinforcing, perpendicular to two shafts (promptly parallel to the ground) or with two shafts at an angle, the two ends, the truss rod left and right sides of top are connected with the top of two shafts respectively.Masthead has a pulley gear, and this pulley gear is a single group of pulley, is installed on the truss rod on top; The counterweight stay cord hangs on this pulley, and under the effect of winch, stay cord carries out operation with the pulley for the center operating rock arm.Above-mentioned the deficiencies in the prior art part is, be installed in as unique one group pulley gear on the truss rod of masthead, stay cord is at first born by truss rod for the application force of pulley gear, just be distributed on the mast shaft then, and stress point is concentrated, therefore stressed by truss rod, and concentrate the stressed poor safety performance that just will cause mast, be unfavorable for the operation of mast crane.
The utility model content
The purpose of this utility model is to provide according to the deficiencies in the prior art part masthead pulley gear of the good mast crane of a kind of safety.
The utility model is realized by following approach:
The masthead pulley gear of mast crane includes two shafts and a truss rod, and two shafts are perpendicular to the ground surface distribution, the two ends of truss rod are connected with the top of two shafts respectively, its structural feature is, also includes two groups of pulley gears, and correspondence is installed in two shaft top ends respectively.
Such structure has following advantage: at first pulley gear is installed in the top ends of shaft, stay cord will at first act on the shaft for the application force of pulley gear, be distributed on the truss rod then, because shaft is the main piece of mast, and perpendicular to ground, therefore the stressed center line of pulley gear is basic coincidence or parallel with the axis of shaft, so acting point is good, safety is good; On the other hand, adopted two pulley gears to be placed in the top ends of shaft respectively, can disperse the application force of stay cord to whole mast like this, made whole mast stressed evenly, safety is good.The utility model also brings a unexpected technique effect: use the mono-pulley gear must guarantee its height, and stay cord that winch is with also should keep certain distance with mast, allow stay cord form a bigger angle with mast, cause using inconvenience otherwise stay cord is easy and the shaft top takes place to rub, adopt two groups of pulleys that are positioned at both ends, mast top then to need not to consider this problem, feasible installation is more simple and convenient, and has saved the space between winch and the mast.
The utility model can further be specially:
Two groups of pulley gears are respectively angle block group and luffing polyspast.
The angle block group is installed in the mast shaft top ends by winch one side, and the luffing polyspast is installed in the mast shaft top ends by rocking arm one side.
After pulley gear is divided into two, can adopt the assembly pulley of difference in functionality, divide the work operation, can further strengthen the performance of mast crane according to its position.
In sum, characteristics of the present utility model are, adopt two groups of pulley gears to be installed in the both sides of mast shaft top ends respectively, the stressed center line of pulley gear will overlap with the axis of mast shaft or be parallel, stay cord to the application force of pulley gear will at first act on shaft on, just be distributed on the truss rod then, because shaft is the main piece of mast, therefore such structure will make mast stressed evenly, acting point is good, and is safe.Also bring a unexpected technique effect in addition, promptly simplified the installation of assembly pulley, and saved the installing space of whole mast crane.
Description of drawings
Figure 1 shows that the structural representation of the masthead pulley gear of mast crane described in the utility model;
Below in conjunction with embodiment the utility model is described further.
Specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, the masthead pulley gear of mast crane, include two shafts 1 and truss rod 2, two shafts 1 are perpendicular to the ground surface distribution, the two ends of truss rod 2 are connected with the top of two shafts 2 respectively, also include two groups of pulley gears, are respectively angle block group 3 and luffing polyspast 4, correspondence is installed in two shafts, 1 top ends: angle block group 3 is installed in the mast shaft top ends by winch one side, and luffing polyspast 4 is installed in the mast shaft top ends by rocking arm one side.
One end of counterweight stay cord 5 connects winch 6, is articulated in regular turn afterwards on angle block group 3 and the luffing polyspast 4, and the other end of stay cord 5 connects suspension one end of rocking arm 7.
When mast was three-dimensional bridge, two groups of pulley gears were installed in the shaft top ends of masthead both sides respectively.Mainly being to allow pulley gear can at first act on the mast main piece---on the shaft, because the holding capacity of shaft is greater than truss rod, so acting point is good, safety is good.
It is same as the prior art that the utility model is not stated part.
Claims (3)
1, the masthead pulley gear of mast crane, include two shafts (1) and a truss rod (2), two shafts (1) are perpendicular to the ground surface distribution, the two ends of truss rod (2) are connected with the top of two shafts (1) respectively, it is characterized in that, also include two groups of pulley gears, correspondence is installed in two shafts (1) top ends respectively.
2, the masthead pulley gear of mast crane according to claim 1 is characterized in that, two groups of pulley gears are respectively angle block group (3) and luffing polyspast (4).
3, the masthead pulley gear of mast crane according to claim 2 is characterized in that, angle block group (3) is installed in the mast shaft top ends by winch one side, and luffing polyspast (4) is installed in the mast shaft top ends by rocking arm one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920136510U CN201372168Y (en) | 2009-01-22 | 2009-01-22 | Mast top pulley device of mast crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920136510U CN201372168Y (en) | 2009-01-22 | 2009-01-22 | Mast top pulley device of mast crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372168Y true CN201372168Y (en) | 2009-12-30 |
Family
ID=41498253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920136510U Expired - Fee Related CN201372168Y (en) | 2009-01-22 | 2009-01-22 | Mast top pulley device of mast crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372168Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650272A (en) * | 2018-12-27 | 2019-04-19 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of mast hoisting and hanging device |
-
2009
- 2009-01-22 CN CN200920136510U patent/CN201372168Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109650272A (en) * | 2018-12-27 | 2019-04-19 | 首钢水城钢铁(集团)赛德建设有限公司 | A kind of mast hoisting and hanging device |
| CN109650272B (en) * | 2018-12-27 | 2020-06-30 | 首钢水城钢铁(集团)赛德建设有限公司 | Mast hoisting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20160122 |
|
| EXPY | Termination of patent right or utility model |