CN1036513C - Asynchronous open/close multi-jaw plates grab bucket - Google Patents
Asynchronous open/close multi-jaw plates grab bucket Download PDFInfo
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- CN1036513C CN1036513C CN93116957A CN93116957A CN1036513C CN 1036513 C CN1036513 C CN 1036513C CN 93116957 A CN93116957 A CN 93116957A CN 93116957 A CN93116957 A CN 93116957A CN 1036513 C CN1036513 C CN 1036513C
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Abstract
The present invention provides an asynchronous opening and closing grab bucket of a multi-jaw plate, which relates to a crane. The present invention aims to solve the problem that massive irregular materials are easy to sprinkle and leak when grabbed by a single-rope multi-jaw grab bucket. The present invention is characterized in that: 1. a supporting rod (2) is divided into two sections; a telescopic body (11) is sheathed with a movement guiding body (8) and is flexibly connected with the movement guiding body (8) through a spring (10); 2. one end of the supporting rod (2) is provided with a piston rod (21); the working chambers (18) of the supporting rod (2) are adjacently connected in series through a pipeline (17); 3. a hydraulic cylinder (15) is inserted and fixed into the head of a crushing plate (4); the working chambers (18) of the crushing plate (4) are adjacently connected in series through the pipeline (17). The three kinds of implementation examples are all not externally connected with an energy source and realize the asynchronous opening and closing of the crushing plate (4) so as to achieve the purpose of sprinkle and leakage prevention. Therefore, the present invention is used for various cranes for loading and unloading massive stone and waste steel.
Description
The present invention relates to overweight machine grab bucket, particularly load and unload the orange-peel grab of the irregular material of bulk.
Along with developing rapidly of building materials and steel and iron industry, the volume of goods loaded and unloaded of materials such as oversize rock material and steel scrap grows with each passing day; But because type and grade are various, the shape different sizes, weight differs, and very easily spills leakage during loading and unloading, and being known as is a difficult problem in this field.
A kind of hydraulic pressure orange-peel grab that belongs to dynamical type, jaw etc. the asynchronous closure of power, can prevent spilling leakage of the irregular material of bulk according to material shapes (resistance) difference effectively.But, need be provided with complicated hydraulic efficiency pressure system such as Hydraulic Pump, change-over valve, the cost height, difficult in maintenance; In addition, be with wireline operation, inconvenience, especially at the harbour, grab bucket aloft will be rotated, and very easily cable is twisted off.
Chinese patent, publication number 88211366, the day for announcing: on October 19th, 1988, disclose the flexible orange-peel grab of a kind of gravity type boat davit.This grab bucket mainly is made up of entablatrance, strut, cross sill, jaw etc.The side of entablatrance, hinged with the upper end of strut, the lower end of strut, hinged with the outside of jaw, the head of jaw is hinged with corresponding cross sill side, and they are equally spaced around central axis.Whole grab bucket is by supporting rope support, open and close rope and pass entablatrance, the assembly pulley on the entablatrance (being called for short the top sheave group), assembly pulley on the cross sill (being called for short the downslide wheels) is reeled, when descending or rising, support by strut, produce certain multiplying power, drive cross sill and descend or rise, realize that jaw opens and closes.This is the structural shape of general duplex type rigidity orange-peel grab.The technical scheme that this patent proposes is: a plurality of dead sheaves are set on the entablatrance, and a plurality of jaw heads are the relative set movable pulley respectively.One opens and closes rope and passes entablatrance, these pulley block in series is reeled, and the movable pulley of jaw head, and it is hinged in the guide groove that the cross sill side is provided with.In order to prevent cross sill upset, again design have be fixed in down cross sill, on put on the guide pillar of crossbeam.Rise when opening and closing rope, the jaw closure runs into different resistances, and jaw is asynchronous, and is basic etc., and power ground has adapted to the needs that irregular materials such as steel scrap are firmly grasped, thereby prevents to spill leakage.But many shortcomings are arranged also: 1, on widely used single rope orange-peel grab, can not implement because in be provided with mechanism for opening/closing (further narration is afterwards arranged), opening and closing rope can't reel upper and lower assembly pulley, application type is single; 2, the pulley of upper and lower assembly pulley, design size is little, and the switching rope is fragile, and design is big, then makes the structure bulkiness; 3, open and close rope and pull out length, reduce capacity rating, require the lifting altitude height; 4, above-mentioned guide pillar makes complex structure; 5, because the lower sheave place is stressed bad, the plain bearing in its structure is fragile.
Mend a technology more approaching: US3,950,022 with theme of the present invention; Open day: on April 13rd, 1976, disclose a kind of grab bucket of each pawl asynchronous behavior.The title of its main component parts, different with China, but function, meaning are the same substantially.For unification, claim name by this art term of China.The basic composition of this patent is identical with above-mentioned Chinese patent.Different is: it is a dynamical type, opens and closes and restricts and corresponding, and be provided with hydraulic actuating cylinder at the center, introduces pressure oil, cross sill is descended or rising, realizes the jaw keying.Spring is set on strut, when jaw runs into different resistances, the different compressions of spring, its jaw degree of crook is also different, can hold the heterogeneity load.This patent is applicable to the extracting hay.Therefore, when oversize rock material that grasps big proportion and steel scrap, use with regard to significant discomfort.Its shortcoming has relatively: 1, each jaw grasps and does not wait power, and for the little jaw of power, material is with landing from then on; 2, spring force is restricted, and especially for the asynchronous orange-peel grab of big rated load weight, strut is stressed very big, so spring is difficult to design; 3, hydraulic efficiency pressure system is separated with the jaw asynchronous feature, and structure design is not optimized.
Purpose of the present invention, it is the shortcoming that overcomes above-mentioned technology, a kind of new and ingenious technical scheme is proposed, make orange-peel grab all kinds of, any rated load weight, its jaw can both be according to asynchronous closures of power such as material resistances, very easily spills leakage a difficult problem thereby Applicable scope solves irregular materials such as loading and unloading oversize rock material and steel scrap extremely widely.
Technical scheme of the present invention is: on the asynchronous parts of the made jaw of original all kinds of rigidity orange-peel grabs, single-action hydraulic cylinder is set, their epitrochoidal chamber, the closed loop series connection, utilize pascal's principle, realize jaw according to the material resistance, and etc. the asynchronous closure of power.This design specifically comprises:
1, on the strut hydraulic actuating cylinder is set, their epitrochoidal chamber with the series connection of pipeline closed loop, in this cascade system, is provided with manual unidirectional liquid charge pump, at rod chamber, is provided with and leads locating bush and spring-assisted reduction.
2, the head of jaw is provided with hydraulic actuating cylinder, and their epitrochoidal chamber with the series connection of pipeline closed loop, in this cascade system, is provided with manual unidirectional liquid charge pump, at rodless cavity, is provided with and leads locating bush and spring-assisted reduction.
3, in the side of cross sill, plunger case is set, their epitrochoidal chamber, with the series connection of pipeline closed loop, in this cascade system, be provided with manual unidirectional liquid charge pump, the external part of its plunger rod supports the head of corresponding jaw respectively, and the axle of this head is hinged in the guide groove of side, place.
The present invention compares with existing technology, and outstanding advantage is: ingenious, utilize pascal's principle simply, and solve the irregular material of loading and unloading bulk and very easily spilt leakage a difficult problem.Compare with the hydraulic pressure orange-peel grab, function is suitable, still: 1, removed complicated hydraulic efficiency pressure system such as Hydraulic Pump, change-over valve, so cost is low, safeguards simple; 2, need not be with wireline operation; 3, the cylinder action amplitude is little, and it is atomic to wear and tear.Compare with aforementioned Chinese patent: 1, single, the duplex type orange-peel grab, electronic orange-peel grab all can be implemented, and obtain positive effect, applied widely (wherein electronic asynchronous orange-peel grab will be with wireline operation, but in the field except that the harbour, because lifting altitude is little, cost is low, does not have the leakage of oil problem, still can replace the hydraulic pressure orange-peel grab fully), 2, more solito rigidity orange-peel grab of the present invention designs, the change part is little, and hydraulic actuating cylinder and series pipe all be mature technology, therefore, simple in structure, volume is little, and the capacity rating height is safe and reliable; 3, stressed everywhere good, long service life.Compare with aforesaid U.S. Patent: 1, each jaw waits the asynchronous closure of power delicately according to the material resistance, and material is difficult for spilling leakage; 2, the load range that can bear of hydraulic actuating cylinder is very big, therefore, can design the asynchronous orange-peel grab of any specified excess weight at an easy rate; 3, original function and asynchronous feature are combined closely, and do not have unnecessary and the function separating member, have reached structural design optimization.In sum, the shortcoming of aforementioned prior art all is overcome.
Fig. 1 is the front view of single rope asynchronous open/close multi-jaw plates grab bucket;
Fig. 2 is the front view of duplex type asynchronous open/close multi-jaw plates grab bucket;
Fig. 3 is the front view of electronic asynchronous open/close multi-jaw plates grab bucket;
Fig. 4 is the longitudinal profile sketch that strut 2 is provided with hydraulic actuating cylinder;
Fig. 5 is the diagrammatic sectional view that jaw 4 heads are provided with hydraulic actuating cylinder;
Fig. 6 is a hydraulic schematic diagram.
Below in conjunction with Fig. 1-6, describe the detail and the service condition of the asynchronous open/close multi-jaw plates grab bucket of the present invention's proposition in detail.
With reference to Fig. 1-3.Existing rigidity orange-peel grab, mainly by entablatrance 1, strut 2, cross sill 3 and jaw 4 etc. form (their structural relation, as described before).Jaw 4 general 3-8 pieces, are equally spaced around central axis by 6 commonly used.The characteristics of gravity type boat davit are the keyings of jaw 4, the not outer energy that connects, and whole grab bucket is supported by supporting rope 5.Single rope orange-peel grab is handled by a lifting mechanism, and supporting rope 5 and opening and closing rope 6 is a rope, is provided with mechanism for opening/closing in it in addition.The hook of mechanism for opening/closing is in the same place with the downslide wheels, and switching rope 6 is upwards linked up with disengaging cross sill 3, and jaw 4 leans on from reopening; Open and close rope 6 and make progress once more, tangle cross sill 3.This reaches by operation.If multiplying power is big, need be provided with the top sheave group on the entablatrance 1, do not draw among the figure.The duplex type orange-peel grab, supporting rope 5 and switching rope 6 are separately handled by two lifting mechanisms respectively.The grab bucket of two classes all is: open and close rope 6 and descend or rise (single rope orange-peel grab is rising), drive cross sill 3 actions, realize the keying of jaw 4.Electronic orange-peel grab belongs to dynamical type, is supported by supporting rope 5, opens and closes rope 6 and is drawn by the motor that (also can be located at the top of entablatrance 3) in it, the downslide wheels are reeled, and its action drives cross sill 3 and descends or rise, by strut 2, produce certain multiplying power, realize the keying of jaw 4.If need not open and close rope 6, the motor-driven screw pair drives cross sill 3 and descends or rise, and also can.Both equivalences.The present invention adopts same principle, to the strut 2 of above-mentioned three class orange-peel grabs, the head of jaw 4, the side of cross sill 3, improves respectively, and embodiment is as follows:
Example one: with reference to Fig. 4, Fig. 6.The two ends that it is characterized in that strut 2 still are provided with pivotally attached hole 7 and hole 17; Original strut is clipped an end, and the truncated position section suitably strengthens, and from then on penetrates a hydraulic actuating cylinder 10 (designate, the hydraulic actuating cylinder that two ends are hinged or the hinged end of an end is fixing that representative is commonly used), and cooperates fixing with axle 8.Simultaneously, the truncated position is designed to fixed mount 9, to increase the stability of hydraulic actuating cylinder 10.This hydraulic actuating cylinder 10, rodless cavity are epitrochoidal chamber 13 fulls of liquid, and through hole 11 is the path mouth between the hydraulic actuating cylinder 10.At rod chamber, be provided with and lead locating bush 14 and spring-assisted reduction 15.Piston rod 16 outer ends are provided with pivotally attached hole 17.Operating principle, as shown in Figure 6.Between the epitrochoidal chamber 13, by through hole 11, the series connection of pipeline 12 closed loops.Cross sill 3 rises, and drives jaw 4 closures, and when jaw 4 runs into different resistances, the liquid of epitrochoidal chamber 13 by through hole 11, goes out automatically or advances, and strut 2 length change, thus power asynchronous behavior such as jaw 4 is corresponding.Two kinds of actions are worked in coordination, and hold on to irregular material.For epitrochoidal chamber 13 fulls of liquid or have certain pressure, in pipeline 12 systems, be provided with manual unidirectional liquid charge pump 18.This pump is contained in the appropriate location of grab bucket, and is provided with little fuel tank 20 and filtering net 19.
When this example was implemented, strut 2 can be designed to a two ends pivotally attached hydraulic actuating cylinder 10, and does not need its fixed mount 9 auxiliary members such as grade.Connection form between the epitrochoidal chamber 13 is constant.With the said structure pattern, be equivalent.
All right, rod chamber is not established and is led locating bush 14 and spring-assisted reduction 15, and it also is used as epitrochoidal chamber, uses Fig. 6 principle, the closed loop series connection.Or rod chamber do not establish whatever, directly feeds atmosphere.Three's function and effect are the same substantially.
Point out that at this epitrochoidal chamber 13 usefulness pipelines 12 series connection sealing is necessary and feature essence, during enforcement, emphasis is considered.If do not have manual unidirectional liquid charge pump 18, still can reach purpose of the present invention.
More than all points, select when implementing.
Example two: with reference to Fig. 5, Fig. 6.The head that it is characterized in that jaw 4 inserts and fixes a two ends pivotally attached hydraulic actuating cylinder 10.The mark meaning is identical with Fig. 4 among the figure.But, through hole 11 is provided in a side of rod chamber (epitrochoidal chamber 13) herein, leads locating bush (at this, also can be post) 14 and spring-assisted reduction 15, is provided in a side of on the relevant position of rodless cavity.Operating principle, as shown in Figure 6.Between the epitrochoidal chamber 13, with the series connection of pipeline 12 closed loops.Long and two-short dash line among the figure represents that this routine reconfiguration is at rod chamber.Cross sill 3 rises, and drives jaw 4 closures, and when running into different resistances, the liquid of epitrochoidal chamber 13 by through hole 11, goes out automatically or advances, the head length respective change of jaw 4, thus make power asynchronous behavior such as jaw 4.Two kinds of actions are worked in coordination, and hold on to irregular material.Cross sill 3 descends, and jaw 4 lets nature take its course to open.For epitrochoidal chamber 13 fulls of liquid or have certain pressure, in pipeline 12 systems, be provided with manual unidirectional liquid charge pump 18, and be provided with little fuel tank 20 and filtering net 19.
All the other are not stated, with example one.
Example three: with reference to Fig. 6.The head that it is characterized in that jaw 4 is hinged on the plunger case that cross sill 3 sides are provided with.With reference to aforementioned Chinese patent, the guide groove of cross sill 3 sides keeps, but the head of jaw 4 is not established movable pulley, and its axle directly slides in guide groove, and hinge is moving within the specific limits.This bottom is supported by the plunger rod external part.The epitrochoidal chamber of plunger case still adopts Fig. 6 principle, with the series connection of pipeline 12 closed loops.In this cascade system, be provided with manual unidirectional liquid charge pump 18, and also establish little fuel tank 20 and filtering net 19.
Service condition is similar in appearance to example one, example two.The selection of manual unidirectional liquid charge pump 18 and oil pipe 12 is with example one.
More than three embodiment, be " or " relation, single enforcement can reach purpose of the present invention.
If the decline of cross sill 3 or rising, by hydraulic actuating cylinder or air cylinder driven, its jaw is asynchronous, selects in the foregoing description for use, and is also feasible.But the design optimization degree will differ from.
The working medium of hydraulic actuating cylinder 10 and plunger case outside the oil removing, also can use fluids such as grease.
Claims (4)
1, a kind of asynchronous open/close multi-jaw plates grab bucket that is used for overweight machine, comprise entablatrance (1), strut (2), cross sill (3), jaw (4), the upper end of the side of entablatrance (1) and strut (2) is hinged, the lower end of strut (2) and jaw (4) outside are hinged, the head of jaw (4) is hinged with corresponding cross sill (3) side, they are equally spaced around central axis, cross sill (3) descends or rises, realize that by strut (2) jaw (4) opens and closes, feature of the present invention is: hydraulic actuating cylinder (10) is set on strut (2), their epitrochoidal chamber (13) is connected with pipeline (12) closed loop, in this cascade system, be provided with manual unidirectional liquid charge pump (18), at rod chamber, be provided with and lead locating bush (14) and spring-assisted reduction (15).
2, asynchronous open/close multi-jaw plates grab bucket according to claim 1, it is characterized in that: the head at jaw (4) is provided with hydraulic actuating cylinder (10), their epitrochoidal chamber (13) is connected with pipeline (12) closed loop, in this cascade system, be provided with manual unidirectional liquid charge pump (18), at rodless cavity, be provided with and lead locating bush (14) and spring-assisted reduction (15).
3, asynchronous open/close multi-jaw plates grab bucket according to claim 1, it is characterized in that: the side at cross sill (3) is provided with plunger case, their epitrochoidal chamber is connected with pipeline (12) closed loop, in this cascade system, be provided with manual unidirectional liquid charge pump (18), the external part of its plunger rod, support the head of jaw (4) respectively, the axle of this head is hinged in the guide groove of side, place.
4, according to claim 1 or 2 or 3 described asynchronous open/close multi-jaw plates grab buckets, it is characterized in that: open and close rope (6) and drive cross sill (3) decline or rising.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93116957A CN1036513C (en) | 1993-08-28 | 1993-08-28 | Asynchronous open/close multi-jaw plates grab bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93116957A CN1036513C (en) | 1993-08-28 | 1993-08-28 | Asynchronous open/close multi-jaw plates grab bucket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1099716A CN1099716A (en) | 1995-03-08 |
| CN1036513C true CN1036513C (en) | 1997-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93116957A Expired - Fee Related CN1036513C (en) | 1993-08-28 | 1993-08-28 | Asynchronous open/close multi-jaw plates grab bucket |
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| Country | Link |
|---|---|
| CN (1) | CN1036513C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249148B (en) * | 2011-06-29 | 2016-06-29 | 高如桐 | Asynchronous multi-jaw with limited block is grabbed bucket |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU416304A1 (en) * | 1972-05-16 | 1974-02-25 | ||
| US3950022A (en) * | 1974-12-16 | 1976-04-13 | Henry Flohr | Power hay fork |
| SU615031A1 (en) * | 1976-08-02 | 1978-07-15 | Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Механизации И Энергетики Лесной Промышленности | Load-engaging device |
| CN88211366U (en) * | 1988-01-23 | 1988-10-19 | 上海港木材装卸公司 | Multi-clack gravity grab bucket for loding and unloading waste steel |
-
1993
- 1993-08-28 CN CN93116957A patent/CN1036513C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU416304A1 (en) * | 1972-05-16 | 1974-02-25 | ||
| US3950022A (en) * | 1974-12-16 | 1976-04-13 | Henry Flohr | Power hay fork |
| SU615031A1 (en) * | 1976-08-02 | 1978-07-15 | Центральный Научно-Исследовательский И Проектно-Конструкторский Институт Механизации И Энергетики Лесной Промышленности | Load-engaging device |
| CN88211366U (en) * | 1988-01-23 | 1988-10-19 | 上海港木材装卸公司 | Multi-clack gravity grab bucket for loding and unloading waste steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1099716A (en) | 1995-03-08 |
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