CN204281073U - Single drum twin rope grab and hoisting crane - Google Patents
Single drum twin rope grab and hoisting crane Download PDFInfo
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- CN204281073U CN204281073U CN201420679653.2U CN201420679653U CN204281073U CN 204281073 U CN204281073 U CN 204281073U CN 201420679653 U CN201420679653 U CN 201420679653U CN 204281073 U CN204281073 U CN 204281073U
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Abstract
The utility model discloses a kind of single drum twin rope grab and hoisting crane, this single drum twin rope grab is provided with movable pulley, driving mechanism for opening or closing and a lifting mechanism, supports that one end of steel rope and closed steel rope is all wrapped on lifting mechanism; Hoist grab bucket body time, spool turns and then be involved in or release and support steel rope and closed steel rope, correspondingly, grab bucket body rises or decline; When opening or closing Hubei Province plate, driving mechanism for opening or closing orders about movable pulley and moves, and then drives closed steel rope to rise or decline, and orders about Hubei Province plate and inwardly or outwards overturns, finally realize grab bucket and close or open.Compared with prior art, what this single drum twin rope grab can realize grabbing bucket body smoothly hoists, declines, opens and closes four functions, and its structure is simple, compact conformation, conveniently arranges and safeguards.On this basis, the invention also discloses a kind of hoisting crane with above-mentioned single drum twin rope grab.
Description
Technical field
The utility model relates to material handling technology, is specifically related to a kind of single drum twin rope grab and hoisting crane.
Background technology
Grab bucket is a kind of common load-engaging device, is mainly used in the handling labor of loose unpacked material, and its crawl and discharging action are completely by driver control, and do not need auxilian to assist, production efficiency is higher.
Grab bucket is in operation process, needing realization to rise, decline, open and closed four fundamental operatioies, in order to realize above-mentioned four actions, grab bucket being provided with reel and steel rope usually, according to the quantity of steel rope, grab bucket is divided into single rope grab, twin rope grab and many rope grips bucket; For twin rope grab, twin rope grab generally includes hoisting drum, opening and closing reel, supports steel rope, closes steel rope and grab bucket body, and grab bucket body specifically comprises entablatrance, two symmetrically arranged pull bars, cross sill and two symmetrically arranged Hubei Province plates; Top and the entablatrance of pull bar are hinged, and bottom and Hubei Province plate of pull bar are hinged, and Hubei Province plate is hinged on cross sill, and the top of cross sill is provided with pulley; Support that the one ends wound of steel rope is on hoisting drum, its other end is connected on entablatrance; Closed steel rope one ends wound is on opening and closing reel, and its other end is connected with entablatrance after walking around the pulley at cross sill top; When capturing material, hoisting drum is released and is supported steel rope (now, closed steel rope keeps lax, and grab bucket body is in open mode), under gravity, grab bucket body declines until Hubei Province plate inserts in material, then, support that steel rope keeps motionless, opening and closing reel is involved in closed steel rope and drives cross sill to move up, and then order about two Hubei Province plates and inwardly overturn (drawing close), until material is closed in grab bucket; Hoisting drum is involved in support steel rope, and then drives grab bucket body to rise, and when body of grabbing bucket moves to discharge location, closed steel rope released by opening and closing reel, and under gravity, Hubei Province plate outwards overturns, and material unloads to stacking place.
Because two lifting mechanism takes up room comparatively large, when hoisting crane is arranged, in order to save space, two reel is generally arranged vertically, and maintenance difficulty is larger.
Utility model content
In view of this, the utility model proposes a kind of single drum twin rope grab and hoisting crane, to solve the above-mentioned technical matters existing for existing pair of reel twin rope grab.
As first aspect, the utility model proposes a kind of single drum twin rope grab; This single drum twin rope grab comprises lifting mechanism, support steel rope, closed steel rope, lifting pulley group, opening and closing assembly pulley, driving mechanism for opening or closing and grab bucket body, and described lifting mechanism is provided with reel; Described lifting pulley group comprises the first fixed pulley, and described opening and closing assembly pulley comprises the second fixed pulley, the 3rd fixed pulley and movable pulley; Described grab bucket body comprises entablatrance, cross sill, pull bar and two Hubei Province plates be oppositely arranged; Top and the entablatrance of pull bar are hinged, and bottom and Hubei Province plate of pull bar are hinged, and Hubei Province plate and cross sill hinged; The one ends wound of described support steel rope is on described reel, and the other end is connected with entablatrance after described first fixed pulley; The one ends wound of described closed steel rope is on described reel, and its other end is connected with cross sill successively after the second fixed pulley, movable pulley and the 3rd fixed pulley; Described driving mechanism for opening or closing is connected with movable pulley, moves for ordering about movable pulley.
In preferred technical scheme, described driving mechanism for opening or closing comprises telescopic oil cylinder, and one end of described telescopic oil cylinder is fixedly installed, and described movable pulley is arranged on the other end of described telescopic oil cylinder.
In preferred technical scheme, described driving mechanism for opening or closing comprises telescopic oil cylinder and swing arm, and described swing arm one end is hinged, and described movable pulley is arranged on described swing arm, and described telescopic oil cylinder is used for ordering about described swing arm and swings.
In preferred technical scheme, described single drum twin rope grab also comprises leading sheave group, described leading sheave group comprises the 6th fixed pulley and the 8th fixed pulley, described 6th fixed pulley, the 8th fixed pulley are arranged at the both sides of movable pulley, for guaranteeing that the hold angle of described closed steel rope on movable pulley is in preset range.
In preferred technical scheme, described leading sheave group also comprises the 7th fixed pulley, and described 7th fixed pulley is arranged between the 6th fixed pulley and the 8th fixed pulley, and described 7th fixed pulley is for separating the closed steel rope of movable pulley both sides.
In preferred technical scheme, described first fixed pulley, the second fixed pulley and the 3rd fixed pulley are coaxially arranged.
The single drum twin rope grab that the utility model proposes is provided with movable pulley, driving mechanism for opening or closing and a lifting mechanism, supports that one end of steel rope and closed steel rope is all wrapped on lifting mechanism; Hoist grab bucket body time, spool turns and then be involved in or release and support steel rope and closed steel rope, correspondingly, grab bucket body rises or decline; When opening or closing Hubei Province plate, driving mechanism for opening or closing orders about movable pulley and moves, and then drives closed steel rope to rise or decline, and orders about Hubei Province plate and inwardly or outwards overturns, finally realize grab bucket and close or open.Compared with prior art, what this single drum twin rope grab can realize grabbing bucket body smoothly hoists, declines, opens and closes four functions, and its structure is simple, compact conformation, conveniently arranges and safeguards.
As second aspect, the utility model proposes a kind of hoisting crane; This hoisting crane is provided with the single drum twin rope grab of turn table, column, jib and above-mentioned any one, described column is fixedly connected with turn table, described jib and turn table or column are rotatably connected, described lifting mechanism is arranged on turn table, described first fixed pulley, the second fixed pulley and the 3rd fixed pulley are all arranged on jib, and described movable pulley and driving mechanism for opening or closing are arranged on column.
In preferred technical scheme, described lifting pulley group also comprises the 4th fixed pulley and the 5th fixed pulley, described support steel rope is connected with entablatrance successively after the 5th fixed pulley, the 4th fixed pulley and the first fixed pulley, described 5th fixed pulley is arranged on jib, and described 4th fixed pulley is arranged on column; Described 4th fixed pulley and the 5th fixed pulley rotate the diff-H of the grab bucket body caused for compensating jib.
In preferred technical scheme, described driving mechanism for opening or closing comprises Hydraulic Pump, electric proportional reversing valve, balance cock and telescopic oil cylinder, described Hydraulic Pump is connected with electric proportional reversing valve, described electric proportional reversing valve is connected with telescopic oil cylinder through balance cock, and described telescopic oil cylinder is used for ordering about described movable pulley and moves.
In preferred technical scheme, described driving mechanism for opening or closing also comprises the first check valve and the second check valve; The oil inlet of described first check valve is connected with the B mouth of electric proportional reversing valve, and its oil outlet is connected with the rod chamber of telescopic oil cylinder; The oil inlet of described second check valve is connected with the A mouth of electric proportional reversing valve, and its oil outlet is connected with the rodless cavity of telescopic oil cylinder.
In preferred technical scheme, described driving mechanism for opening or closing also comprises the first by pass valve and the second by pass valve, and described first by pass valve is in parallel with the first check valve, and described second by pass valve is in parallel with the second check valve.
In preferred technical scheme, described telescopic oil cylinder is provided with displacement pickup, institute's displacement sensors is for detecting the stroke of described telescopic oil cylinder.
Compared with prior art, by adopting above-mentioned single drum twin rope grab, the hoisting crane that the utility model proposes, more compact structure, safeguard more convenient.
Accompanying drawing explanation
The accompanying drawing forming a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
The single drum twin rope grab that Fig. 1 provides for the utility model specific embodiment is supported the canoe schematic diagram of steel rope and closed steel rope;
The structural representation of the grab bucket body that Fig. 2 provides for the utility model specific embodiment;
The part-structure schematic diagram of the hoisting crane that Fig. 3 provides for the utility model specific embodiment;
Fig. 4 is the partial schematic diagram of hoisting crane when movable pulley that the utility model specific embodiment provides is in A position;
Fig. 5 is the partial schematic diagram of hoisting crane when movable pulley that the utility model specific embodiment provides is in B position;
Fig. 6 is the hydraulic schematic diagram of driving mechanism for opening or closing.
Description of reference numerals:
1, reel 2, support steel rope 3, closed steel rope 4, first fixed pulley
5, the second fixed pulley 6, the 3rd fixed pulley 7, movable pulley 8, the 5th fixed pulley
9, the 4th fixed pulley 10, swing arm 11, telescopic oil cylinder 12, the 6th fixed pulley
13, the 7th fixed pulley 14, the 8th fixed pulley 15, the 9th fixed pulley 16, the tenth fixed pulley
20, turn table 21, column 22, jib 23, amplitude oil cylinder
31, electric proportional reversing valve 32, shuttle valve 33, balance cock 34, first check valve
35, the second check valve 36, first by pass valve 37, second by pass valve
38, displacement pickup 39, pressure sensor 41, Hubei Province plate 42, cross sill
43, pull bar 44, entablatrance
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the utility model and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
As shown in Figure 3, the hoisting crane that the utility model specific embodiment proposes comprises turn table 20, column 21, jib 22 and single drum twin rope grab, column 21 is fixedly connected with turn table 20, jib 22 and column 21 are rotatably connected, amplitude oil cylinder 23 is provided with between jib 22 and column 21, one end of amplitude oil cylinder 23 is hinged on jib 22, and the other end is hinged on column 21; As depicted in figs. 1 and 2, single drum twin rope grab specifically comprises lifting mechanism, support steel rope 2, closed steel rope 3, lifting pulley group, opening and closing assembly pulley, driving mechanism for opening or closing and grab bucket body, lifting mechanism is specifically provided with reel 1 and drive element thereof, and driving mechanism for opening or closing specifically comprises swing arm 10 and telescopic oil cylinder 11; Lifting pulley group comprises the first fixed pulley 4, the 4th fixed pulley 9 and the 5th fixed pulley 8, and opening and closing assembly pulley comprises the second fixed pulley 5, the 3rd fixed pulley 6 and movable pulley 7; As shown in Figure 2, body of grabbing bucket comprises entablatrance 44, the symmetrically arranged pull bar 43 of cross sill 42, two and two Hubei Province plates 41 be oppositely arranged; Top and the entablatrance 44 of pull bar 43 are hinged, and bottom and Hubei Province plate 41 of pull bar 43 are hinged, and Hubei Province plate 41 is hinged with cross sill 42; Support that the one ends wound of steel rope 2 is on reel 1, its other end is connected with the entablatrance 44 of grab bucket body successively after the 5th fixed pulley 8, the 4th fixed pulley 9 and the first fixed pulley 4; One end of closed steel rope 3 is also wrapped on reel 1, and its other end is connected with cross sill 42 successively after the second fixed pulley 5, movable pulley 7 and the 3rd fixed pulley 6; On this hoisting crane, as shown in Figure 3, lifting mechanism is arranged on turn table 20, the bottom of swing arm 10 is articulated with the O point on column 21, the top of swing arm 10 is connected with movable pulley 7, one end and the column 21 of telescopic oil cylinder 11 are hinged, the other end of telescopic oil cylinder 11 and the middle part of swing arm 10 hinged; First fixed pulley 4, second fixed pulley 5, the 3rd fixed pulley 6 and the 5th fixed pulley 8 are all arranged on jib 22, and the 4th fixed pulley 9 is arranged on column 21, and grab bucket body is by supporting that steel rope 2 is suspended on jib 22.
The principle of work that this hoisting crane is grabbed is: when capturing material, reel 1 is released and is supported steel rope 2 and closed steel rope 3, under gravity, grab bucket body moves down, now, as shown in Figure 4, telescopic oil cylinder 11 is in elongation state, the top of swing arm 10 is positioned at A place, grab bucket body is in open mode, after Hubei Province plate 41 inserts material, telescopic oil cylinder 11 is retracted, and then order about swing arm 10 and rotate, correspondingly, cross sill 42 moves up, Hubei Province plate 41 inwardly overturns, when the top of swing arm 10 moves to B place (as shown in Figure 5) from A, cross sill 42 stops upward movement, two Hubei Province plates 41 be oppositely arranged are drawn close completely, body of now grabbing bucket is closed, material grabbed into, during handling material, reel 1 is involved in supports steel rope 2 and closed steel rope 3, correspondingly, grab bucket body is upwards raised up to predetermined altitude, then, hoisting crane moves integrally or turn table 20 rotates, and then grab bucket body is moved to the top of predetermined material stacking place, when drawing off material, telescopic oil cylinder 11 extends, and correspondingly, the top of swing arm 10 moves to A place from B, and Hubei Province plate 41 outwards overturns, and grab bucket body is opened, and material drops in predetermined stacking place.
In the above-described embodiments, the effect of the 4th fixed pulley 9 and the 5th fixed pulley 8 compensates the diff-H that jib 22 rotates the grab bucket body caused; Usually, when jib 22 rotates, supporting that steel rope 2 is to correspondingly moving up and down, and then drive grab bucket body to move up and down, substantially maintaining present level by arranging in process that the 4th fixed pulley 9 and the 5th fixed pulley 8 can make grab bucket body rotate at jib.。
In embodiment preferably, this hoisting crane is also provided with leading sheave group, leading sheave group specifically comprises the 6th fixed pulley 12, the 7th fixed pulley 13 and the 8th fixed pulley 14, as shown in Fig. 3 to 5,6th fixed pulley 12 and the 8th fixed pulley 14 are arranged at top side and the bottom side of movable pulley 7 respectively, for ensure closed steel rope 3 on movable pulley 7 to hold angle substantially constant; 7th fixed pulley 13 is arranged between the 6th fixed pulley 12 and the 8th fixed pulley 14, for separating the closed steel rope 3 of movable pulley 7 top side and bottom side, prevents them to be mutually wound around.
In a preferred embodiment, first fixed pulley 4, second fixed pulley 5, the 3rd fixed pulley 6 and the 5th fixed pulley 8 are coaxially arranged, and are respectively arranged with the 9th fixed pulley 15 and the tenth fixed pulley 16 between reel 1 and the 5th fixed pulley 8, between reel 1 and the second fixed pulley 5.
In other embodiments, can omit swing arm 10, directly use telescopic oil cylinder 11 to drive movable pulley 7 to move, be such as fixedly installed on column 21 by telescopic oil cylinder 11 level, movable pulley 7 is directly arranged on the piston rod of telescopic oil cylinder 11.
As shown in Figure 6, move to drive movable pulley 7, Hydraulic Pump (not shown), electric proportional reversing valve 31, balance cock 33, first check valve 34, second check valve 35, first by pass valve 36 and the second by pass valve 37 is also comprised at driving mechanism for opening or closing, Hydraulic Pump is connected with the P mouth of electric proportional reversing valve 31, and A mouth, the B mouth of electric proportional reversing valve 31 are connected with telescopic oil cylinder 11 through balance cock 33 respectively; The oil inlet of the first check valve 34 is connected with the B mouth of electric proportional reversing valve 31, and its oil outlet is connected with the rod chamber of telescopic oil cylinder 11; The oil inlet of the second check valve 35 is connected with the A mouth of electric proportional reversing valve 31, and its oil outlet is connected with the rodless cavity of telescopic oil cylinder 11; First by pass valve 36 is in parallel with the first check valve 34, and the second by pass valve 37 is in parallel with the second check valve 35.
When opening grab bucket body, the right position work of electricity proportional reversing valve 31, hydraulic oil arrives the rodless cavity of telescopic oil cylinder 11 successively through the P mouth of electric proportional reversing valve 31 and A mouth, the second check valve 35, under the ordering about of hydraulic oil, the piston rod of telescopic oil cylinder 11 stretches out, and the hydraulic oil in rod chamber flows out through the B mouth of balance cock 33, electric proportional reversing valve 31, T mouth, correspondingly, cross sill 42 moves down, and Hubei Province plate 41 outwards overturns, and grab bucket body is opened; When closing grab bucket body, the left position work of electricity proportional reversing valve 31, hydraulic oil arrives the rod chamber of telescopic oil cylinder 11 successively through the P mouth of electric proportional reversing valve 31 and B mouth, the first check valve 34, under the ordering about of hydraulic oil, the piston rod of telescopic oil cylinder 11 is retracted, and the hydraulic oil in rodless cavity flows out through the A mouth of balance cock 33, electric proportional reversing valve 31, T mouth, correspondingly, cross sill 42 moves up, and Hubei Province plate 41 inwardly overturns, and grab bucket body is closed.
In the above-described embodiments, the effect of balance cock 33 mainly contains two, and the first is given and flowed out the hydraulic oil of telescopic oil cylinder 11 and provide back pressure, makes working process more steady, and it two is when telescopic oil cylinder 11 is motionless, and telescopic oil cylinder 11 is locked in current state; The effect of the first check valve 34 and the second check valve 35 avoids hydraulic oil to enter telescopic oil cylinder 11 from balance cock 33, and save energy consumption, because be provided with cutoff port in balance cock 33, hydraulic oil enters from balance cock 33 heating that telescopic oil cylinder 11 can increase hydraulic oil; First by pass valve 36 and the second by pass valve 37 mainly play safety effect, prevent system pressure too high.
In a preferred embodiment, telescopic oil cylinder 11 is provided with displacement pickup 38, displacement pickup 38 is for detecting the stroke of telescopic oil cylinder 11; By displacement pickup 38, operating personal can control closed steel rope easily, and judges that whether telescopic oil cylinder 11 is flexible easily and put in place, and then whether the body that judges to grab bucket opens or closes and put in place.
In a preferred embodiment, shuttle valve 32 is provided with between the A mouth and B mouth of electric proportional reversing valve 31, the present load of telescopic oil cylinder 11 can be known by shuttle valve 32, shuttle valve 32 feeds back to Hydraulic Pump by oil circuit control LS, Hydraulic Pump is according to working as load output hydraulic pressure oil, and then the energy dissipation avoiding hydraulic oil too much to cause.
Certainly, pressure sensor 39 can also be provided with on hydraulic circuit, the pressure in oil circuit can be understood by pressure sensor 39 in real time.
Compared with the twin rope grab of two reel, above-mentioned single drum twin rope grab only needs a lifting mechanism, has the advantages such as simple and compact for structure, convenient layout and maintenance; Correspondingly, by adopting above-mentioned single drum twin rope grab, the more compact structure of above-mentioned hoisting crane, safeguard more convenient.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (12)
1. a single drum twin rope grab, it is characterized in that, comprise lifting mechanism, support steel rope (2), closed steel rope (3), lifting pulley group, opening and closing assembly pulley, driving mechanism for opening or closing and grab bucket body, described lifting mechanism is provided with reel (1); Described lifting pulley group comprises the first fixed pulley (4), and described opening and closing assembly pulley comprises the second fixed pulley (5), the 3rd fixed pulley (6) and movable pulley (7); Described grab bucket body comprises entablatrance (44), cross sill (42), pull bar (43) and two Hubei Province plates (41) be oppositely arranged; Top and the entablatrance (44) of pull bar (43) are hinged, and bottom and Hubei Province plate (41) of pull bar (43) are hinged, and Hubei Province plate (41) is hinged with cross sill (42); The one ends wound of described support steel rope (2) is on described reel (1), and the other end is connected with entablatrance (44) after described first fixed pulley (4); The one ends wound of described closed steel rope (3) is on described reel (1), and its other end is connected with cross sill (42) successively after the second fixed pulley (5), movable pulley (7) and the 3rd fixed pulley (6); Described driving mechanism for opening or closing is connected with movable pulley (7), mobile for ordering about movable pulley (7).
2. single drum twin rope grab according to claim 1, it is characterized in that, described driving mechanism for opening or closing comprises telescopic oil cylinder (11), one end of described telescopic oil cylinder (11) is fixedly installed, and described movable pulley (7) is arranged on the other end of described telescopic oil cylinder (11).
3. single drum twin rope grab according to claim 1, it is characterized in that, described driving mechanism for opening or closing comprises telescopic oil cylinder (11) and swing arm (10), described swing arm (10) one end is hinged, described movable pulley (7) is arranged on described swing arm (10), and described telescopic oil cylinder (11) swings for ordering about described swing arm (10).
4. single drum twin rope grab according to claim 1, it is characterized in that, also comprise leading sheave group, described leading sheave group comprises the 6th fixed pulley (12) and the 8th fixed pulley (14), described 6th fixed pulley (12), the 8th fixed pulley (14) are arranged at the both sides of movable pulley (7), for guaranteeing that described the hold angle of closed steel rope (3) on movable pulley (7) is in preset range.
5. single drum twin rope grab according to claim 4, it is characterized in that, described leading sheave group also comprises the 7th fixed pulley (13), described 7th fixed pulley (13) is arranged between the 6th fixed pulley (12) and the 8th fixed pulley (14), and described 7th fixed pulley (13) is for separating the closed steel rope (3) of movable pulley (7) both sides.
6. the single drum twin rope grab according to claim 1 to 5 any one, is characterized in that, described first fixed pulley (4), the second fixed pulley (5) and the 3rd fixed pulley (6) are coaxially arranged.
7. a hoisting crane, it is characterized in that, be provided with turn table (20), column (21), jib (22) and the single drum twin rope grab described in claim 1 to 6 any one, described column (21) is fixedly connected with turn table (20), described jib (22) is rotatably connected with turn table (20) or column (21), described lifting mechanism is arranged on turn table (20), described first fixed pulley (4), second fixed pulley (5) and the 3rd fixed pulley (6) are all arranged on jib (22), described movable pulley (7) and driving mechanism for opening or closing are arranged on column (21).
8. hoisting crane according to claim 7, it is characterized in that, described lifting pulley group also comprises the 4th fixed pulley (9) and the 5th fixed pulley (8), described support steel rope (2) is connected with entablatrance (44) successively after the 5th fixed pulley (8), the 4th fixed pulley (9) and the first fixed pulley (4), described 5th fixed pulley (8) is arranged on jib, and described 4th fixed pulley (9) is arranged on column (21); Described 4th fixed pulley (9) and the 5th fixed pulley (8) rotate the diff-H of the grab bucket body caused for compensating jib (22).
9. hoisting crane according to claim 7, it is characterized in that, described driving mechanism for opening or closing comprises Hydraulic Pump, electric proportional reversing valve (31), balance cock (33) and telescopic oil cylinder (11), described Hydraulic Pump is connected with electric proportional reversing valve (31), described electric proportional reversing valve (31) is connected with telescopic oil cylinder (11) through balance cock (33), and described telescopic oil cylinder (11) is mobile for ordering about described movable pulley (7).
10. hoisting crane according to claim 9, is characterized in that, described driving mechanism for opening or closing also comprises the first check valve (34) and the second check valve (35); The oil inlet of described first check valve (34) is connected with the B mouth of electric proportional reversing valve (31), and its oil outlet is connected with the rod chamber of telescopic oil cylinder (11); The oil inlet of described second check valve (35) is connected with the A mouth of electric proportional reversing valve (31), and its oil outlet is connected with the rodless cavity of telescopic oil cylinder (11).
11. hoisting cranes according to claim 10, it is characterized in that, described driving mechanism for opening or closing also comprises the first by pass valve (36) and the second by pass valve (37), described first by pass valve (36) is in parallel with the first check valve (34), and described second by pass valve (37) is in parallel with the second check valve (35).
Hoisting crane described in 12. according to Claim 8 to 11 any one, it is characterized in that, described telescopic oil cylinder (11) is provided with displacement pickup (38), institute's displacement sensors (38) is for detecting the stroke of described telescopic oil cylinder (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420679653.2U CN204281073U (en) | 2014-11-13 | 2014-11-13 | Single drum twin rope grab and hoisting crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420679653.2U CN204281073U (en) | 2014-11-13 | 2014-11-13 | Single drum twin rope grab and hoisting crane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107601265A (en) * | 2017-10-26 | 2018-01-19 | 张娜 | A kind of four rope suspenders of crane |
| CN110963418A (en) * | 2019-12-30 | 2020-04-07 | 成都西部泰力智能设备股份有限公司 | Intelligent double-beam crane |
-
2014
- 2014-11-13 CN CN201420679653.2U patent/CN204281073U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107601265A (en) * | 2017-10-26 | 2018-01-19 | 张娜 | A kind of four rope suspenders of crane |
| CN110963418A (en) * | 2019-12-30 | 2020-04-07 | 成都西部泰力智能设备股份有限公司 | Intelligent double-beam crane |
| CN110963418B (en) * | 2019-12-30 | 2024-05-17 | 成都西部泰力智能设备股份有限公司 | Intelligent double-beam crane |
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