CN201686406U - Lifting tackle with three pulleys - Google Patents
Lifting tackle with three pulleys Download PDFInfo
- Publication number
- CN201686406U CN201686406U CN2010201830859U CN201020183085U CN201686406U CN 201686406 U CN201686406 U CN 201686406U CN 2010201830859 U CN2010201830859 U CN 2010201830859U CN 201020183085 U CN201020183085 U CN 201020183085U CN 201686406 U CN201686406 U CN 201686406U
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- CN
- China
- Prior art keywords
- pulley
- auxiliary
- pulleys
- pulley shaft
- side plate
- 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
A lifting tackle with three pulleys comprises a bed plate; an ear plate is connected with the bed plate; two pulley shaft holes are formed on a left margin plate and a right margin plate; a main pulley shaft and an auxiliary pulley shaft are respectively mounted in the two pulley shaft holes; a main pulley is mounted on the main pulley shaft; two auxiliary pulleys are mounted on the auxiliary pulley shaft; the external diameter of the main pulley is larger than those of the auxiliary pulleys; an upper support arm is assembled between the two auxiliary pulleys which are arranged in parallel, and is connected with a lower support arm fixed on the main pulley shaft through a bolt; and the ear plate is connected with the main pulley through the main pulley shaft. Compared with the conventional lifting tackle with three pulleys arranged in parallel, the utility model has the advantages that one pulley is removed, so that the eccentric force of a steel wire rope on the pulleys is reduced, which can overcome the defect that during the lifting of the conventional lifting tackle assembly with the three pulleys arranged in parallel, multiple steel wire ropes are twisted and the lifting tackle obviously inclines towards one side; and the volume and mass of the device are reduced.
Description
Technical field
This practicality newly relates to a kind of weight-lifting equipment, is mainly used in electromechanical appliance lifting installation, building or the hoisting of equipment.
Background technology
In engineering construction and electromechanical appliance field-mounted process, lifting large-tonnage parts often adopt the tackle block group to lift by crane, its multiplying power of assembly pulley that a plurality of pulleys are formed is big more, the required power of then single draught line is just more little, thereby the lifting winding plant of the available smaller power greater weight object of slinging.At present in lifting three pulley groups of widely used parallel arranged when lifting, because friction force effect between steel rope and the pulley, make the discontinuity of each root rope, the speed of single rope rising or (decline) is just inconsistent, cause many steel ropes that the strand phenomenon can take place to beat, promptly steel rope is screwed in together.This phenomenon distance between the lifting polyspast is long more, just obvious more.Simultaneously, tackle block can obviously banking occur, thereby reduces operating efficiency, and the security and stability of hoisting operation is had certain harm.Select for use perpendicular three pulley groups that form a line, that diameter of pulley diminishes one by one can solve this type of problem, but this polyspast volume is big, quality is heavy.Occasion narrow at some and that distance is short can't be used.
Summary of the invention
To be solved in the utility model is that three pulley groups of present parallel arranged are when lifting, obviously appearance problem banking of strand, tackle block can take place to beat in many steel ropes, and perpendicular three pulley group volumes that form a line, that diameter of pulley diminishes one by one are big, the problem that quality is heavy, thereby provide a kind of and guaranteeing that the polyspast steel rope does not take place to beat under strand, the obvious good result of use that banking occurs of tackle block meeting, can alleviate three pulley hoisting coasters of single coaster weight.
The purpose of this utility model is achieved in that a kind of three pulley hoisting coasters, comprise seat board, otic placode is connected with seat board, on the left side plate and right side plate are provided with two pulley axis holes, head pulley axle and auxiliary pulley axle are installed in respectively in the two pulley axis holes, head pulley is installed on the head pulley axle, two auxiliary pulley are installed on the auxiliary pulley axle, the head pulley external diameter is greater than auxiliary pulley, be equipped with upper branch arm in the middle of two auxiliary pulley arranged side by side, upper branch arm and being fixed between the lower branch arm on the head pulley axle by bolted connection, otic placode is connected with head pulley by the head pulley axle.Left side plate is connected by the side plate tie bolt with right side plate.The three pulley hoisting coasters that the utility model provides, pulley is divided into the major-minor pulley, and the head pulley diameter is greater than auxiliary pulley, and auxiliary pulley is two on the pulley of same specification pattern, and is listed on the sheave shaft.When the lifting process, be positioned at the tackle block group switching centre and put inner position.Head pulley is one, is positioned at tackle block group external position.Compare with three pulleys of present parallel arranged, reduced the width of a pulley, the eccentric force that steel rope is subjected on pulley reduces, the three pulley groups that overcome present parallel arranged are when lifting, and many steel ropes can take place to beat strand, banking phenomenon can obviously appear in tackle block.Compare with perpendicular three pulleys that form a line, that diameter of pulley diminishes one by one, avoided its volume big, the quality reconstructed image.Draw the advantage of steel rope in the longitudinal plane of symmetry position of tackle block group but keep it, in the time of can further guaranteeing the polyspast lifting, steel rope does not take place to beat strand, good result of use banking can obviously not appear in tackle block.Alleviated single coaster weight simultaneously.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples: Fig. 1 is a structural representation of the present utility model; Fig. 2 is a side-looking structural representation of the present utility model.
The specific embodiment
As depicted in figs. 1 and 2, the utility model comprises seat board 1, otic placode 2 is connected with seat board 1, on the left side plate 3 and right side plate 5 are provided with two pulley axis holes, head pulley axle 6 and auxiliary pulley axle 7 are installed in respectively in the two pulley axis holes, head pulley 5 is installed on the head pulley axle 6, two auxiliary pulley 8 are installed on the auxiliary pulley axle 7, head pulley 5 external diameters are greater than auxiliary pulley 8, be equipped with upper branch arm 9 in the middle of two auxiliary pulley 8 arranged side by side, upper branch arm 9 be fixed on head pulley axle 6 on lower branch arm 10 between be connected by bolt 11, otic placode 2 is connected with head pulley 5 by head pulley axle 7.Left side plate 3 is connected by side plate tie bolt 12 with right side plate 5.
During assembling, auxiliary pulley axle 7 passes support arm 8 and the right side plate 3 between left side plate 4, two auxiliary pulley 8 and two auxiliary pulley, and is fixing by nut 13.Head pulley axle 6 passes left side plate 4, otic placode 2, lower branch arm 10, head pulley 5 and right side plate 3, passes through bolt.Behind pad and the backing plate, connect between upper branch arm 9 and the lower branch arm 10, make the stressed head pulley axle 6 that is passed on the part auxiliary pulley 8 with high strength bolt 14.Alleviate auxiliary pulley 8 load of bearing, thereby two auxiliary pulley 8 can be chosen the less diameter of axle.Seat board 1 has the shackle lifting hole(eyelet), in order to be connected with need lifting object.With head pulley 5, auxiliary pulley 7, seat board 1, otic placode 2 etc. fixing after, with side plate bolt of rear end plate 12 left side plate 4 and right side plate 3 integral body are fixed, form three pulleys.
Claims (2)
1. pulley hoisting coaster, comprise seat board (1), otic placode (2) is connected with seat board (1), it is characterized in that: on the left side plate (3) and right side plate (5) are provided with two pulley axis holes, head pulley axle (6) and auxiliary pulley axle (7) are installed in respectively in the two pulley axis holes, head pulley (5) is installed on the head pulley axle (6), two auxiliary pulley (8) are installed on the auxiliary pulley axle (7), head pulley (5) external diameter is greater than auxiliary pulley (8), be equipped with upper branch arm (9) in the middle of two auxiliary pulley (8) arranged side by side, upper branch arm (9) be fixed on head pulley axle (6) on lower branch arm (10) between be connected by bolt (11), otic placode (2) is connected with head pulley (5) by head pulley axle (7).
2. three pulley hoisting coasters according to claim 1 is characterized in that: left side plate (3) is connected by side plate tie bolt (12) with right side plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201830859U CN201686406U (en) | 2010-05-10 | 2010-05-10 | Lifting tackle with three pulleys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201830859U CN201686406U (en) | 2010-05-10 | 2010-05-10 | Lifting tackle with three pulleys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201686406U true CN201686406U (en) | 2010-12-29 |
Family
ID=43374692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201830859U Expired - Fee Related CN201686406U (en) | 2010-05-10 | 2010-05-10 | Lifting tackle with three pulleys |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201686406U (en) |
-
2010
- 2010-05-10 CN CN2010201830859U patent/CN201686406U/en not_active Expired - Fee Related
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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: 20101229 Termination date: 20190510 |