Bucket-wheel stacker reclaimer
Technical field
The present invention relates to bulk stockpile and get technology, be specifically related to a kind of bucket-wheel stacker reclaimer.
Background technology
Bucket-wheel stacker reclaimer is large loose unpacked material common equipment of handling continuously in modernization industry, there is high operating efficiency, be widely used in bulk cargo (such as mine, coal, coke, the sandstone) stacking and taking operation of the occasions such as harbour, harbour, metallurgy, cement steel plant, coke-oven plant, coal storage plant, power plant.
Conventionally, bucket-wheel stacker reclaimer comprises large mechanism of car, bucket wheel, turn table, front jib and turn table, and turn table is arranged on large mechanism of car rotationally, and one end of front jib is hinged on turn table, and the other end is connected with bucket wheel; For making front jib, realize pitching, between turn table and front jib, be also provided with pitching oil cylinder, one end of pitching oil cylinder and front jib are hinged, and the other end and the turn table of pitching oil cylinder are hinged, by the flexible of pitching oil cylinder, be that front jib swings up and down, and then drive bucket wheel motion.
On existing bucket-wheel stacker reclaimer, pitching oil cylinder is very important parts, in some situation (such as maintenance or exchange device more), front jib need to be maintained to end position (under normal circumstances, front jib bend down or steeve maximum angle time residing position), now, pitching oil cylinder must play failure-free support or pull effect; And in practice, the leakage of oil of pitching oil cylinder, hydraulic circuit leakage of oil or blow, the problem such as the great sudden change of stressed appearance of front jib is all inevitable, once there is these problems, front jib may under Action of Gravity Field, drop suddenly or on turn over, and then cause safety misadventure.
Therefore, how to promote the safety of bucket-wheel stacker reclaimer, be still those skilled in the art's technical matters urgently to be resolved hurrily.
Summary of the invention
In view of this, the object of the invention is to propose a kind of safer bucket-wheel stacker reclaimer.
The present invention proposes a kind of bucket-wheel stacker reclaimer, be provided with turn table, front jib and pitching oil cylinder, one end and the turn table of described pitching oil cylinder are hinged, and the other end and front jib are hinged; Between described front jib and turn table, be provided with self-locking mechanism, described self-locking mechanism is used for stoping front jib jib before smallest limit position is continued to bend down and stoped to continue to steeve in limes superiors position.
Further, described self-locking mechanism comprises crank and connecting rod, and one end of described connecting rod and front jib are hinged, and the first end of the other end and crank is hinged, and the second end and the turn table of described crank are hinged; When described forearm chord position is in limes superiors position or during smallest limit position, the line of centers of described crank overlaps with the line of centers of connecting rod.
Further, described self-locking mechanism comprises connecting rod, slide block, the first block and the second block, one end and the slide block of described connecting rod are hinged, the other end and turn table are hinged, on described front jib, be provided with the slide rail of predetermined length, described the first block and the second block are arranged at respectively the two ends of described slide rail; Described slide block is arranged on described slide rail and can slides along described slide rail, when described forearm chord position is during in limes superiors position, described slide block is resisted against on described the second block, and when described forearm chord position is during in smallest limit position, described slide block is resisted against on described the first block.
Further, described self-locking mechanism comprises expansion link, and described expansion link is provided with interior bar and outer bar that can relative sliding; One end of described interior bar and front jib are hinged, and the other end and outer bar are sheathed, and described outer bar is hinged away from one end and the turn table of described interior bar; Described front jib is when limes superiors position, and described expansion link is in long status, and described front jib is when smallest limit position, and described expansion link is in short status.
Further, on described slide block, be provided with pin-and-hole, described the first block and the second block are provided with the lock pin coordinating with described pin-and-hole.
Further, described forearm chord position when limes superiors position, the angle degree of being less than of front jib and horizontal direction.
Further, described forearm chord position when smallest limit position, the angle degree of being less than of front jib and horizontal direction.
Further, described forearm chord position when limes superiors position, the angle degree of being of front jib and horizontal direction; Described forearm chord position when smallest limit position, the angle degree of being of front jib and horizontal direction.
This bucket-wheel stacker reclaimer is provided with self-locking mechanism, when limes superiors position, self-locking mechanism can stop front jib to continue to steeve so that prevent front jib excessively steeve cause upset, when smallest limit position, self-locking mechanism can stop front jib to continue to bend down so that prevent front jib excessively bend down cause upset.Therefore, compared with prior art, the safety of this bucket-wheel stacker reclaimer is higher.
In technical scheme further, this self-locking mechanism is provided with crank and connecting rod, and one end of described connecting rod and front jib are hinged, and the first end of the other end and crank is hinged, and the second end and the turn table of described crank are hinged, and then forms piston crank mechanism; At described forearm chord position in limes superiors position or during smallest limit position, the line of centers of described crank overlaps with the line of centers of connecting rod, make the dead point of piston crank mechanism in transmission, crank cannot rotate, and then limit the motion of connecting rod, under the position-limiting action of crank and connecting rod, front jib is fixed on limes superiors position or smallest limit position.In this way, when maintenance or replacing parts, forearm can be placed on to limes superiors position or smallest limit position, now, even there is the leakage of oil of pitching oil cylinder, hydraulic circuit leakage of oil or blow, the problem such as the great sudden change of stressed appearance of front jib, front jib also can not drop or on turn over; When in operation process, before occurring suddenly tenesmus of jib or on turn over problem time, current arm support moves to limes superiors position or smallest limit position, self-locking mechanism can play a protective role, thereby prevents the generation of safety misadventure or the impact that alleviates safety misadventure.
In technical scheme further, described self-locking mechanism comprises connecting rod, slide block, the first block and the second block, one end and the slide block of described connecting rod are hinged, the other end and turn table are hinged, on described front jib, be provided with the slide rail of predetermined length, described the first block and the second block are arranged at respectively the two ends of described slide rail; Described slide block is arranged on described slide rail and can slides along described slide rail, on described slide block, be provided with pin-and-hole, described the first block and the second block are provided with the lock pin coordinating with described pin-and-hole, when described forearm chord position is during in limes superiors position, described slide block is resisted against on described the second block, and the lock pin on the second block inserts in pin-and-hole, correspondingly, front jib is locked by self-locking mechanism, cannot continue action; When described forearm chord position is during in smallest limit position, described slide block is resisted against on described the first block, and the lock pin on the first block inserts in pin-and-hole, and correspondingly, front jib is locked by self-locking mechanism, cannot continue action.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the bucket-wheel stacker reclaimer of first embodiment of the invention;
Fig. 2 is the partial enlarged drawing of A part in Fig. 1, and now front jib is horizontal;
Fig. 3 be part shown in Fig. 2 at forearm chord position the schematic diagram during in limes superiors position;
Fig. 4 be part shown in Fig. 2 at forearm chord position the schematic diagram during in smallest limit position;
Fig. 5 is the partial schematic diagram of the bucket-wheel stacker reclaimer of second embodiment of the invention, and this bucket-wheel stacker reclaimer is provided with the self-locking mechanism of another kind of structure.
Description of reference numerals:
1-front jib 2-bucket wheel, 3-turn table 4-large mechanism of car 5-pitching oil cylinder
6-crank, 7-connecting rod, 8-the first block 9-slide block the 10-the second block
The specific embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Below in conjunction with 1 to 5 pair of specific embodiments of the invention of accompanying drawing, be elaborated.
As depicted in figs. 1 and 2, the bucket-wheel stacker reclaimer that first embodiment of the invention proposes comprises large mechanism of car 4, bucket wheel 2, turn table 3, front jib 1, rear jib, pitching oil cylinder 5, trolley body (not shown) and self-locking mechanism, this self-locking mechanism comprises connecting rod 7 and crank 6, turn table 3 is arranged on large mechanism of car 4 rotationally, one end of front jib 1 is hinged on turn table 3, and the other end is connected with bucket wheel 2; One end of pitching oil cylinder 5 and front jib 1 are hinged, and the other end of pitching oil cylinder 5 and turn table 3 are hinged, by the flexible of pitching oil cylinder 5, are that front jib 1 swings up and down, and then drive bucket wheel 2 to move; One end of connecting rod 7 and front jib 1 are hinged, and the first end of the other end and crank 6 is hinged, and the second end and the turn table 3 of crank 6 are hinged; As shown in Figure 3 and Figure 4, when front jib 1 is positioned at limes superiors position or smallest limit position, the line of centers of crank 6 overlaps with the line of centers of connecting rod 7.
Above-mentioned self-locking mechanism is provided with crank 6 and connecting rod 7, and one end of connecting rod 7 and front jib 1 are hinged, and the first end of the other end and crank 6 is hinged, and the second end and the turn table 3 of crank 6 are hinged, and then forms crank 6 connecting rod 7 mechanisms; When front jib 1 is positioned at limes superiors position or smallest limit position, the line of centers of crank 6 overlaps with the line of centers of connecting rod 7, make crank 6 dead points of connecting rod 7 mechanisms in transmission, crank 6 cannot rotate, and then limit the motion of connecting rod 7, under the position-limiting action of crank 6 and connecting rod 7, front jib 1 is fixed on limes superiors position or smallest limit position.When maintenance or replacing parts, front jib 1 can be placed in to limes superiors position or smallest limit position, now, though there is 5 leakage of oils of pitching oil cylinder, hydraulic circuit leakage of oil or blow, the problem such as the great sudden change of stressed appearance of front jib 1, front jib 1 also can not drop or on turn over; When in operation process, before occurring jib 1 tenesmus suddenly or on turn over problem time, current arm support 1 moves to limes superiors position or smallest limit position, self-locking mechanism can play a protective role, thereby prevents the generation of safety misadventure or the impact that alleviates safety misadventure.
As shown in Figure 5, self-locking mechanism on the bucket-wheel stacker reclaimer that the second embodiment of the present invention proposes is provided with connecting rod 7, the first block 8, slide block 9 and the second block 10, one end of connecting rod 7 and slide block 9 are hinged, the other end and turn table 3 are hinged, on front jib 1, be provided with the slide rail of predetermined length, the first block 8 and the second block 10 are arranged at the two ends of slide rail, and slide block 9 is arranged on slide rail slidably; When front jib 1 is positioned at limes superiors position, slide block 9 is resisted against on the second block 10; When front jib 1 is positioned at smallest limit position, slide block 9 is resisted against on the first block 8; Different from the first embodiment, in this embodiment, this self-locking mechanism can not be in limes superiors position or smallest limit position limit front jib completely, can only limit front jib reasonably moving in scope.
Certainly, can lock front jib by locking structure, such as on the first block 8 and the second block 10, lock pin being set, on slide block 9, pin-and-hole is set, when slide block 9 is when living the first block 8 or the second block 10, lock pin inserts in pin-and-hole, and then by the locking position of front jib.
In embodiment preferably, in limes superiors position, the front jib 1 of this bucket-wheel stacker reclaimer is 13 degree with the angle of horizontal direction; When smallest limit position, front jib 1 is 14 degree with the angle of horizontal direction; By limiting the angle of front jib 1, can facilitate the setting of self-locking mechanism, and guarantee in limes superiors position or during smallest limit position, self-locking mechanism stressed not too large.
In addition, in other embodiments, self-locking mechanism comprises expansion link, and particularly, expansion link is provided with interior bar and outer bar that can relative sliding; One end of interior bar and front jib 1 are hinged, and the other end and outer bar are sheathed, and outer bar is hinged away from one end and the turn table 3 of interior bar; When current arm support 1 is steeved, expansion link extends, and front jib 1 is when limes superiors position, and expansion link is in long status, and when current arm support 1 bends down, expansion link shortens, and front jib 1 is when smallest limit position, and expansion link is in short status.
Compared with prior art, above-mentioned bucket-wheel stacker reclaimer can promote safety effectively by above-mentioned self-locking mechanism is set.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.