CN201180058Y - Balance mechanism for mechanical four-cable bulk cargo grab bucket closing cable - Google Patents
Balance mechanism for mechanical four-cable bulk cargo grab bucket closing cable Download PDFInfo
- Publication number
- CN201180058Y CN201180058Y CNU2007201985152U CN200720198515U CN201180058Y CN 201180058 Y CN201180058 Y CN 201180058Y CN U2007201985152 U CNU2007201985152 U CN U2007201985152U CN 200720198515 U CN200720198515 U CN 200720198515U CN 201180058 Y CN201180058 Y CN 201180058Y
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- China
- Prior art keywords
- grab bucket
- rope
- mechanical
- closed
- sheave shaft
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Abstract
The utility model relates to a grab bucket device for a mechanical crane, in particular to a balancing mechanism of a mechanical four-cord grab bucket device for loading and unloading bulk products such as grain, coal and ore. The balancing mechanism comprises a rotational balance weight arranged on two sides of a lower pulley casing, wherein one end of the balancing weight is hinged with a fixed device of a closed cord, the other end of the balancing weight is movably connected with a pulley spindle through a connecting device; and the balancing weight is formed by welding a steel plate and a step-typed telescopic axle. When the grab bucket works, the length of the closed cord is changed by adjusting the angular deflection of the balancing weight. The telescopic axle does relative rotating motion with a wear-resistant lining arranged inside the lower pulley casing. The balancing mechanism solves the problems that the lower pulley spindle of a large-tonnage bulk product grab bucket is easy to wear down, the disassembly is difficult and the maintenance cost is high, and the like.
Description
Technical field
The utility model relates to a kind of grab bucket equipment of power jacking machine, especially relates to a kind of equalizing gear that loads and unloads the machinery four ropes grab bucket equipment of bulk goods such as grain, coal, ore.
Background technology
At present, the large-tonnage machinery four ropes grab bucket that ground such as China harbour are used, mechanical four ropes grab bucket has the closed rope and the riser cable of control grab bucket.In the course of the work, the grab bucket operating process is as follows: 1) put down grab bucket: when putting down grab bucket, two ropes loosen simultaneously, but closed rope is put soon slightly, and grab bucket is just opened in the decline process; Grasp: when putting to the relevant position, slowly tighten up closed rope, because the weight of grab bucket can make in the bucket tooth or cutting edge incision bulk goods on two jaws, and closure is got up bulk goods is filled; Promote grab bucket: pack up two cable wires simultaneously, rise synchronously and both grab bucket was mentioned; Unloading: after hoisting crane rotates on the emptying point, loosen closed rope, this moment, the riser cable braking was motionless, and two jaws just open unloading.
In the said process, in order to compensate the length problem of closed rope, adopt a kind of equalizing gear usually, existing equalizing gear is a thick clap board in welding on the square special heavy plate, be fixed in by taper pin on the sheave shaft of downslide roller box, and equalizing gear be installed in the both sides of downslide roller box.Closed rope twines in the slide down roller box, the sheave shaft of the roller box that glides this moment directly with the downslide roller box on the anti-wearing liner direct contact, the difference owing to closed Suo Changdu rotates sheave shaft.The equalizing gear of this kind form, the big problem that grab bucket exists for large-tonnage ore machinery four ropes is: after a period of time is used in grab bucket, because the rotation of sheave shaft, cause the severe wear on sheave shaft surface, the gap increase of sheave shaft and lining, the vibratory impulse that grab bucket produces at work makes lining very easily cracked.In case above-mentioned phenomenon occurs, sheave shaft is difficult to remove, and must transport assembly pulley integral body back originating firm; If change sheave shaft, then balance block also must be done newly; Therefore, the operating cycles of the grab bucket of existing balanced structure weak point, maintenance difficult and service expenditure height.
Chang Yong a kind of balance wheel compensation mechanism couples together balance wheel and sheave shaft by spline in addition, though the wearing and tearing of sheave shaft do not take place, its sheave shaft tooling cost is too high.Main is the compensating action that does not have closed rope to swing.
Summary of the invention
Technical problem to be solved in the utility model is, overcome that the operating cycles easy to wear because of sheave shaft, that lining is easily cracked and maintenance difficult causes that existing machinery four rope grab bucket equipment exist is short, defectives such as maintenance difficult and expense height, and the equalizing gear that provides a kind of novel mechanical four rope bulk goods to grab bucket closed rope, this kind equalizing gear long service life, be convenient to maintenance, and maintenance cost is low.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
The grab bucket equalizing gear of closed rope of a kind of mechanical four rope bulk goods, comprise downslide roller box 1, on downslide roller box 1, be provided with sheave shaft 2, be provided with a rotating balance block 3 in the both sides of downslide roller box 1, it is characterized in that: an end of described balance block 3 and the anchor fitting 6 of closed rope 7 are hinged, and the other end flexibly connects by a connecting device 4 and sheave shaft 2.
Described balance block 3 comprises that one connects the quill shaft 32 of steel plate 31 and step, the big end of described quill shaft 32 is affixed with an end that is connected steel plate 31, another small end is movably set on the sheave shaft 2, its excircle contacts with a anti-wearing liner 5 on being embedded in pulley casing 1 wallboard, connects the other end of steel plate 31 and the anchor fitting 6 of closed rope 7 and is hinged.
Described connecting device 4 comprises a pressing plate 41, and this pressing plate 41 is pressed in the big end of quill shaft 32, by being bolted on the sheave shaft 2.
Also be provided with channel for oiling on the small end of described quill shaft 32.
Described connection steel plate 31 is a wedge shape.
The grab bucket equalizing gear of closed rope of the beneficial effects of the utility model, the utility model machinery four rope bulk goods, because the flexible connection between balance block and the sheave shaft, the impact of having avoided the rotation because of closed strap kinetic balance piece that sheave shaft is caused; And because of it is to flexibly connect, its Assembly ﹠Disassembly is all very convenient, and is therefore also very convenient to the maintenance of equalizing gear, reduced maintenance cost accordingly.
Because its closed rope anchor fitting can be swung on balance block.Grab bucket is in the middle of work, and the length variations of closed rope can be adjusted by the deflection angle of balance block.This structure is rotated traditional sheave shaft and the direct contact between lining, is converted into the rotation that contacts of balance block and anti-wearing liner.The sheave shaft that the part is easy to wear becomes the part of permanent use.The increase of wear-resisting area prolongs the lining life-span.The assembly precision of this structure is low, on-the-spot easily repair and replacement.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A direction cutaway view of the utility model Fig. 1.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is specifically described, the grab bucket equalizing gear of closed rope of a kind of mechanical four rope bulk goods, comprise downslide roller box 1, be provided with sheave shaft 2 on downslide roller box 1, be provided with a rotating balance block 3 in the both sides of pulley casing 1, an end of described balance block 3 and the anchor fitting 6 of closed rope 7 are hinged, the other end flexibly connects by a connecting device 4 and sheave shaft 2, referring to shown in Figure 1.
Above-mentioned balance block 3 comprises that one connects the quill shaft 32 of steel plate 31 and step, the big end of described quill shaft 32 is integrally welded with an end that is connected steel plate 31, another small end is movably set on the sheave shaft 2, its excircle contacts with a anti-wearing liner 5 on the wallboard 9 that is embedded in pulley casing 1, connects the other end of steel plate 31 and the anchor fitting 6 of closed rope 7 and is hinged.
Above-mentioned connection steel plate 31 is a wedge shape, is convenient to be hinged with the anchor fitting 6 of closed rope 7, alleviates overall weight.
Above-mentioned connecting device 4 can be a pressing plate 41, and this pressing plate 41 is pressed in the big end of quill shaft 32, be fixed on the sheave shaft 2 by bolt 8.
Above-mentioned connecting device 4 also can be other structure, just balance block 3 activity orientation on sheave shaft 2, make it not break away from sheave shaft 2.
Not only carry out the surface at the small end of quill shaft 32 and quench but also be processed with channel for oiling, increase its abrasive resistance.
When closed rope 7 risings, when descending, the anchor fitting 6 of closed rope 7 is swung on balance block 3, and the length variations of closed rope 7 can be adjusted by the deflection angle of balance block 3.By the rotation that contacts between balance block 3 and the anti-wearing liner 5.The sheave shaft that the part is easy to wear becomes the part of permanent use.Increase wear-resisting area, the lining life-span is prolonged; The assembly precision of this structure is low, on-the-spot easily repair and replacement.
Claims (5)
1. the machinery four rope bulk goods equalizing gear of closed rope of grabbing bucket, comprise downslide roller box (1), on downslide roller box (1), be provided with sheave shaft (2), be provided with a rotating balance block (3) in the both sides of downslide roller box (1), it is characterized in that: the anchor fitting (6) of an end of described balance block (3) and closed rope (7) is hinged, and the other end flexibly connects by a connecting device (4) and sheave shaft (2).
2. the grab bucket equalizing gear of closed rope of a kind of mechanical four rope bulk goods according to claim 1, it is characterized in that: described balance block (3) comprises that one connects the quill shaft (32) of steel plate (31) and step, the big end of described quill shaft (32) is affixed with an end that is connected steel plate (31), another small end is movably set on the sheave shaft (2), its excircle contacts with a anti-wearing liner (5) on being embedded in downslide roller box (1) wallboard, and the anchor fitting (6) of the other end of described connection steel plate (31) and closed rope (7) is hinged.
3. the grab bucket equalizing gear of closed rope of a kind of mechanical four rope bulk goods according to claim 2, it is characterized in that: described connecting device (4) comprises a pressing plate (41), this pressing plate (41) is pressed in the big end of quill shaft (32), by being bolted on the sheave shaft (2).
4. according to the grab bucket equalizing gear of closed rope of claim 2 or 3 described a kind of mechanical four rope bulk goods, it is characterized in that: also be provided with channel for oiling on the small end of described quill shaft (32).
5. according to the grab bucket equalizing gear of closed rope of claim 2 or 3 described a kind of mechanical four rope bulk goods, it is characterized in that: described connection steel plate (31) is wedge shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201985152U CN201180058Y (en) | 2007-11-28 | 2007-11-28 | Balance mechanism for mechanical four-cable bulk cargo grab bucket closing cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201985152U CN201180058Y (en) | 2007-11-28 | 2007-11-28 | Balance mechanism for mechanical four-cable bulk cargo grab bucket closing cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201180058Y true CN201180058Y (en) | 2009-01-14 |
Family
ID=40249557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201985152U Expired - Lifetime CN201180058Y (en) | 2007-11-28 | 2007-11-28 | Balance mechanism for mechanical four-cable bulk cargo grab bucket closing cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201180058Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534019A (en) * | 2014-12-31 | 2015-04-22 | 无锡市新华起重工具有限公司 | Grab bucket balance weight expanding sleeve type fixing structure |
-
2007
- 2007-11-28 CN CNU2007201985152U patent/CN201180058Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534019A (en) * | 2014-12-31 | 2015-04-22 | 无锡市新华起重工具有限公司 | Grab bucket balance weight expanding sleeve type fixing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090114 |