SU814842A1

SU814842A1 - Self-propelled boom crane

Info

Publication number: SU814842A1
Application number: SU792785466A
Authority: SU
Inventors: Жан Григорьевич Гордин; Моисей Яковлевич Егнус; Кирилл Николаевич Кондырев; Георгий Владимирович Линевич
Priority date: 1979-06-25
Filing date: 1979-06-25
Publication date: 1981-03-23

Description

Изобретение относится к грузоподъемным кранам, а именно, к самоходным стре· новым.The invention relates to hoisting cranes, namely, to self-propelled strain · new.

Известен стреловой самоходный кран, содержащий установленную на поворотной платформе стрелу, мачту, соединенную посредством полиспаста со стрелой, гибкую тягу одним концом закрепленную к оголовку мачты, установленную с тыльной стороны поворотной платформы неподвижную выносную опору, на которой расположена подвижная опора Г1J Недостатком известного крана является сравнительно небольшая его грузоподъемность.A self-propelled crane is known, comprising a boom mounted on a turntable, a mast connected by a chain hoist and an arrow, a flexible rod attached to the mast head at one end, a fixed outrigger mounted on the rear side of the turntable, on which the movable support G1J is located. A disadvantage of the known crane is a relatively its small carrying capacity.

Цель изобретения - увеличение грузоподъемности крана.The purpose of the invention is to increase the lifting capacity of the crane.

Поставленная цель достигается тем, что мачта шарнирно закреплена к подвижной опоре, а тяга другим своим концом · присоединена к поворотной платформе.This goal is achieved by the fact that the mast is pivotally fixed to the movable support, and the rod with its other end is connected to the turntable.

На фиг. 1 показан стреловой самоходный кран в рабочем положении, общий вид; на фиг. 2 - вид А на фиг. 1; на фиг. 3 - разрез Б-Б на фиг. 1; на фиг. 4разрез В-В на фиг. 3; на фиг. 5 - схема монтажа крана.In FIG. 1 shows a jib crane in a working position, general view; in FIG. 2 is a view A in FIG. 1; in FIG. 3 - section BB in FIG. 1; in FIG. 4 section BB in FIG. 3; in FIG. 5 is a diagram of a crane installation.

Стреловой самоходный кран содержит ходовую часть 1, которая несет поворот— ⁵ нуЮ платформу 2 с шарнирно на ней закрепленной стрелой 3. С тыльной стороны крана установлена выносная опора 4, которая состоит из неподвижного опорно— го сектора 5, связанного тягами 6 с ходовой частью 1, и передвижного сектора 7, перемещающегося на направляющим опорного сектора 5.The self-propelled self-propelled crane contains a running gear 1, which carries a turn — ^{5 a} good platform 2 with a boom pivotally mounted on it 3. An outrigger 4 is installed on the rear side of the crane, which consists of a fixed supporting sector 5 connected by rods 6 to the running gear 1 , and a mobile sector 7 moving on guides of the support sector 5.

Передвижной сектор 7 связан тягами 8 с поворотной платформой 2 и несет шарнирно с ним соединенный шевр 9, который может поворачиваться в вертикальной плоскости вокруг шарниров 10. Шевр 9 связан со стрелой 3 полиспастной систе— 20 мой 11, а с помощью оттяжки 12 и шарнира 13 — с поворотной платформой 2 крана. Шевр 9 может нести дополнительный противовес 14, если подъем и перемещение груза 15 осуществляется стреThe movable sector 7 is connected by rods 8 to the rotary platform 2 and carries a hinged joint 9 that can be rotated in a vertical plane around the hinges 10. Chevre 9 is connected to the boom 3 of the chain hoist - 20 mine 11, and by means of a guy 12 and hinge 13 - with a rotary platform 2 cranes. Chevre 9 can carry an additional counterweight 14, if the lifting and moving of the load 15 is carried out

814842 4 пой 3. Для подъема и перемещения грузов и, в частности, противовеса 14 с помощью шевра противовес закрепляют на стреле, а груз — на шевре.814842 4 sing 3. For lifting and moving loads and, in particular, counterweight 14 with a chevron, the counterweight is fixed on the boom, and the load on the chevron.

Самомонтаж крана осуществляется < ₅ следующим образом.Self-installation of the crane is < ₅ as follows.

Устанавливают выносную опору 4, состыковывая тяги 8 с поворотной платформой 2, а тяги 6 - с ходовой частью 1. ЗавоДя петйи шевра 9 в проушины пере- ₁₀движного сектора 7, соединяют их осями, т.е. монтируют шарниры 10 и запасовывают полиспаст 11 и закрепляют его на стреле 3 с приводом от лебедки крана.The outrigger 4 is installed by joining the rods 8 with the rotary platform 2, and the rods 6 with the undercarriage 1. Putting the petria of the shevher 9 into the eyes of the re- _{10 of the} movable sector 7, they are connected by axes, i.e. they mount the hinges 10 and store the chain hoist 11 and fix it on the boom 3 driven by a crane winch.

Для этого на полиспасте 16 закрепляют _f5ходовую нитку, отсоединив ее от лебедки, а на освободившемся барабане лебедки закрепляют ходовую нитку полиспаста 11.To do this, on the tackle 16 fix the running thread _f5 , disconnecting it from the winch, and on the freed drum of the winch the running thread of the tackle 11 is fixed.

Подъем шевра осуществляют поворотом шевра 9 вокруг шарниров 10, для чего используется подвешенный на крюке крана груз 15.The rise of the chevron is carried out by turning the chevron 9 around the hinges 10, for which a load 15 suspended on a crane hook is used.

На шевре 9 устанавливают дополнительный противовес 14 с помощью грузового полиспаста 17 шевра. Далее закрепляют шевр 9 оттяжками 12 на шарнире 13.An additional counterweight 14 is installed on the chevron 9 with the help of a cargo sheave 17 of the chevron. Next, fasten the chevron 9 guy wires 12 on the hinge 13.

Ослабляют запроектированный полиспаст 16, осуществляющий в обычном стреловом кране оттяжку стрелы 3, путем изменения вылета последней.Loosen the designed tackle 16, which carries out in the usual jib crane an extension of the boom 3, by changing the reach of the latter.

При проведении подъемных работ опус- ³⁰кают противовес 14 на землю при натянутом полиспасте 17. Осуществляют строповку поднимаемого монтажного груза 15 и натягивают грузовой полиспаст 18 стрелы 3. Поднимают противовес 14 в пре— ³⁵ делах установленной высоты выносной опо— ры 4, а затем поднимают и устанавливают груз 15 в проектное положение. Уравновешивание усилий в оттяжке 12 ^: и полиспасте 11 обеспечивается* 3-х осным балансиром 19.When carrying out lifting operations, ³⁰ counterweight 14 are lowered to the ground with the chain hoist 17 pulled. The lifting assembly load 15 is slinged and the arrow hoist 18 is pulled. 3. The counterweight 14 is lifted within the range of ^{35 to the} height of the outrigger 4, and then lifted and set the load 15 in the design position. Balancing forces in the guy 12 ^: and the tackle 11 is provided by a * 3-axis balancer 19.

Все полиспастные системы приводятся от существующих пебедок крана.All tackle systems are driven by existing crane winches.

Благодаря установке шевра и повышенной устойчивости меняется схема нагружения стрелы, что позволяет увеличить грузоподъемность крана, в том числе при больших вылетах крюка без увеличения нагрузок на стрелу.Thanks to the installation of the shaver and increased stability, the loading diagram of the boom changes, which allows to increase the crane's lifting capacity, including at large hook outreach without increasing the load on the boom.

Claims

The invention relates to cranes, namely self-propelled cranes. Known jib self-propelled crane containing boom mounted on a turntable, a mast connected by means of a polyspast to an arrow, flexible with one end fixed to the mast tip, mounted on the back side of the turntable fixed support, on which the movable TlJ is located. A disadvantage of the known crane is its relatively small carrying capacity. The purpose of the invention is to increase the capacity of the crane. The goal is achieved by the fact that the mast is hinged to the movable support, and the other end of the mast is attached to the turntable. FIG. 1 shows a jib self-tapping crane in the operating position, which is generally included in FIG. 2 - Vic A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4B-B in FIG. 3; in fig. 5 - crane installation diagram. A jib self-propelled crane contains a chassis 1, which carries a rotary platform 2 with a fixed boom 3 hinged on it. On the back side of the crane there is an outboard support 4, which consists of a fixed supporting sector 5, connected by tangles 6 with a chassis 1, and a mobile a sector 7 moving on the guides of the support sector 5. The mobile sector 7 is connected with the tilting platform 8 to the turntable 2 and is pivotally connected to it. The connected chassis 9, which can rotate in a vertical plane around the hinges 1O. Chevre 9 is connected with the boom 3 by the polyspast system 11, and by means of the protrusion 12 and the hinge 13 it is connected with the turntable 2 of the crane. Chevre 9 can carry an additional counterweight 14 if lifting and moving the load 15 is carried out by stretching the load 3. To lift and move the load and, in particular, the counterweight 14 with the help of the shevre, the counterweight is fixed to the boom and the load is fixed to the chevre. The crane is self-assembled as follows. Install the outrigger support 4, from the docking of the thrust 8 with the turntable 2, and the throttle 6 - with the undercarriage 1. The charger 9 comes into the lugs of the mobile sector 7, they are connected with their axes, i.e. Mount the hinges 1O and stock the polyspast 11 and fix it on the boom 3 driven by the crane winch. To do this, the crawler thread 16 is fastened on the chain block 16, detached from the winch, and the chain link 11 is fastened on the empty drum of the chain winch. 9 install an additional counterweight 14 with the help of a cargo polyspast 17 of the schrav. Next, fix the gusher 9 with a 12 "hinge 13. Hook the polisped 16 loosened by carrying out the boom 3 at 1 amp boom crane by changing the departure of the latter. When carrying out lifting operations, the counterweight 14 is lowered onto the ground with the tensioned pulley chain 17. The lifting weight of the lifting weight 15 is snapped and the cargo hoist pulley 18 of the arrow 3 is pulled up. 15 in the design position. The balancing of the forces in the pulling 12 and the polyspast 11 is provided by a 3-axle balance bar 19. All polyspast systems are driven from existing crane winches. Due to the installation of a shevre and increased stability, the boom loading scheme is changed, which allows increasing the crane loading capacity, including at large hook departures without increasing boom loads. Claims of the invention A self-propelled jib crane containing a boom mounted on a turntable, a mast connected by a tackle to a boom, flexible with one end fixed to the mast tip, fixed outrigger mounted on the backside of the turntable characterized in that, in order to increase the lifting capacity of the crane, the mast is hinged to the movable support, and the other end of the mast is attached to the turntable. Sources of information taken into account in the examination 1. US Patent M 3930583, cl. 212-49, published. 1976.

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