CN203903839U - Pulley block of tower type crane - Google Patents
Pulley block of tower type crane Download PDFInfo
- Publication number
- CN203903839U CN203903839U CN201420213274.4U CN201420213274U CN203903839U CN 203903839 U CN203903839 U CN 203903839U CN 201420213274 U CN201420213274 U CN 201420213274U CN 203903839 U CN203903839 U CN 203903839U
- Authority
- CN
- China
- Prior art keywords
- sheave shaft
- pulley
- pulley shaft
- bracket
- support
- 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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- Pulleys (AREA)
Abstract
The utility model particularly relates to a pulley block of a tower type crane, which comprises a bracket, wherein a pulley shaft is arranged on the bracket; a pulley is mounted on the pulley shaft and is arranged in the bracket; the left end of the pulley shaft protrudes out of the bracket; the upper surface, protrudes out of the bracket, of the pulley shaft is a plane surface where a through hole is formed; an axial spacing device used for spacing the axial moving of the pulley shaft is mounted in the through hole; a baffle is welded on the left side of the bracket and above the plane surface of the pulley shaft; the distance between the bottom surface of the baffle and the axis of the pulley shaft is smaller than the radius of the pulley shaft. The pulley block is simple in structure, and convenient to disassembly and assembly, and has the advantage that the aloftwork time of the tower type crane is greatly shortened to reduce hazard of a constructer, so that the popularization value is super-high.
Description
Technical field
The utility model relates to tower crane apparatus field, particularly a kind of tower crane assembly pulley.
Background technology
No matter be that tower crane is installed, still maintenance, dismounting tower crane, its most of operations is all carried out in high-altitude.Aloft work labor content is very large, and danger is also very high.The tower crane that present each producer produces, the assembly pulley quantity that complete machine uses is very many, and the staged sheave shaft that adopts bearing pin fluting pattern to design, limit the radial rotating of sheave shaft by the mode of pressure board pulley axial trough, the mode of screw fastening pressing plate limits the end float misalignment of sheave shaft.In the time of installation, maintenance and dismounting tower crane, the aloft work labor content of the installation, maintenance of staged sheave shaft and dismounting is very large, when particularly keeping in repair and dismantling the tower crane of long-term use, the clam member screw at sheave shaft place due to screw get rusty cause especially difficulty disassemble.The sheave shaft of this design increases tower crane installation, maintenance and dismounting operating mode aloft work risk.
Therefore, be necessary to design one and can reduce work capacity and easy-to-disassemble and assemble assembly pulley.
Utility model content
In order to address the above problem, the utility model provides a kind of tower crane assembly pulley, and this tower crane assembly pulley easy accessibility, has reduced the aloft work time, and has improved installation, dismounting and the maintenance efficiency of tower crane.
The utility model is achieved by the following technical solution:
A kind of tower crane assembly pulley, comprise support, on described support, be provided with sheave shaft, pulley is installed on sheave shaft, pulley is positioned at internal stent, and the left end of sheave shaft protrudes from support, and the upper surface that protrudes from the sheave shaft of support is plane, in this plane, be provided with through hole, the axially movable axially stop block of restriction sheave shaft is installed in through hole; The left side of described support is welded with baffle plate, and baffle plate is positioned at the top of sheave shaft plane; The distance of the bottom surface of described baffle plate and sheave shaft axis is less than the radius of sheave shaft.
Preferably, described axially stop block is a spring cotter.
Preferably, described sheave shaft is without ladder fulcrum.
The beneficial effects of the utility model are: sheave shaft is simple in structure, and easy accessibility, reduces dangerous at the aloft work time that can significantly reduce tower crane.
Brief description of the drawings:
Below in conjunction with accompanying drawing, the utility model is further described.
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is left view of the present utility model;
In figure: 1, support, 2, baffle plate, 3, sheave shaft, 4, spring cotter, 5, pulley.
Detailed description of the invention:
Embodiment 1: a kind of tower crane assembly pulley, its structure is as shown in Figure 1-2: comprise support 1, on support 1, be provided with sheave shaft 3, pulley 5 is installed on sheave shaft 3, pulley 5 is positioned at support 1 inside, and the left end of sheave shaft 3 protrudes from support 1, and the upper surface that protrudes from the sheave shaft 3 of support 1 is plane, in this plane, be provided with through hole, the axially movable axially stop block of the restricted sheave shaft 3 of through hole interpolation; The left side of described support 1 is welded with baffle plate 2, and baffle plate 2 is positioned at the top of sheave shaft 3 planes; The distance of the bottom surface of described baffle plate 2 and sheave shaft 3 axis is less than the radius of sheave shaft 3; Described axially stop block is a spring cotter 4; Described sheave shaft 3 is without ladder fulcrum.
Spring cotter 4 limits sheave shaft 3 dextrad and moves axially, and baffle plate 2 is stuck in the plane of sheave shaft 3, and the left-hand that can limit sheave shaft 3 radial rotatings and sheave shaft 3 moves axially.
When dismounting, only spring cotter 4 need to be extracted, sheave shaft 3 be dismantled on support 1, pulley 5 Automatic-fallings.
Limit the radial rotating of sheave shaft with respect to the existing mode with pressure board pulley axial trough, the mode of screw fastening pressing plate limits the mode of the end float misalignment of sheave shaft, the assembly pulley dismounting of this programme is easy, can significantly reduce the aloft work time of tower crane installation and removal, reduce workmen's danger.And the sheave shaft 3 of this programme is without ladder d-axis, and the sheave shaft of common use is ladder d-axis, and two compare with the required machining blanks material of diameter sheave shaft, the sheave shaft 3 of this programme does not need to process ladder, the diameter of axle of required blank material is less, thereby saves raw MAT'L, reduces complete machine cost of manufacture.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendments that creative work can make or distortion still in protection domain of the present utility model.
Claims (3)
1. a tower crane assembly pulley, comprise support, it is characterized in that: on support, be provided with sheave shaft, pulley is installed on sheave shaft, pulley is positioned at internal stent, and the left end of sheave shaft protrudes from support, and the upper surface that protrudes from the sheave shaft of support is plane, in this plane, be provided with through hole, the axially movable axially stop block of restriction sheave shaft is installed in through hole; The left side of described support is welded with baffle plate, and baffle plate is positioned at the top of sheave shaft plane; The distance of the bottom surface of described baffle plate and sheave shaft axis is less than the radius of sheave shaft.
2. tower crane assembly pulley according to claim 1, is characterized in that: described axially stop block is a spring cotter.
3. tower crane assembly pulley according to claim 1, is characterized in that: described sheave shaft is without ladder fulcrum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213274.4U CN203903839U (en) | 2014-04-28 | 2014-04-28 | Pulley block of tower type crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420213274.4U CN203903839U (en) | 2014-04-28 | 2014-04-28 | Pulley block of tower type crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203903839U true CN203903839U (en) | 2014-10-29 |
Family
ID=51778127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420213274.4U Expired - Fee Related CN203903839U (en) | 2014-04-28 | 2014-04-28 | Pulley block of tower type crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203903839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528515A (en) * | 2014-12-30 | 2015-04-22 | 徐州建机工程机械有限公司 | Lifting hook structure of tower crane |
| CN107381399A (en) * | 2017-07-12 | 2017-11-24 | 宁夏共享机床辅机有限公司 | A kind of automatic stereowarehouse overspeed protection adjusting means |
-
2014
- 2014-04-28 CN CN201420213274.4U patent/CN203903839U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104528515A (en) * | 2014-12-30 | 2015-04-22 | 徐州建机工程机械有限公司 | Lifting hook structure of tower crane |
| CN107381399A (en) * | 2017-07-12 | 2017-11-24 | 宁夏共享机床辅机有限公司 | A kind of automatic stereowarehouse overspeed protection adjusting means |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 Termination date: 20170428 |