CN205328488U

CN205328488U - Column type swing crane; derrick

Info

Publication number: CN205328488U
Application number: CN201620022432.7U
Authority: CN
Inventors: 胡军; 易刚兵
Original assignee: YUNNAN LISHEN HEAVY INDUSTRY MACHINERY Co Ltd
Current assignee: YUNNAN LISHEN HEAVY INDUSTRY MACHINERY Co Ltd
Priority date: 2016-01-12
Filing date: 2016-01-12
Publication date: 2016-06-22
Anticipated expiration: 2026-01-12

Abstract

The utility model particularly relates to a column type swing crane, derrick, the purpose provides the column type swing crane, derrick that can control couple falling speed, the energy can be saved in a flexible way. This hoist includes the stand, and the cantilever beam is connected on stand upper portion, and the cantilever beam can or be parked around the stand rotation by the rotary mechanism drive, set up trolley on the cantilever beam, have trolley track and motion on the cantilever beam, motion drive trolley along cantilever beam length direction seesaw, play to rise the input shaft of motor and speed reducer, the output shaft and the reel of speed reducer are connected, winding wire rope passes through assembly pulley connecting hooks on the reel, it is equipped with the gearshift to rise between motor and the speed reducer. The couple relies on its automatic decline when descending, no longer rely on drive motor drive, effective the energy can be saved, and the speed control the when couple descends controls through the retarber, speed in the time of can controlling the couple in a flexible way and descend, improvement work efficiency.

Description

A kind of pillar slewing crane

Technical field

This utility model relates to technical field of crane equipment, particularly to a kind of pillar slewing crane。

Background technology

On existing pillar slewing crane, what be directly connected to weight is hook or grab bucket, and grab bucket mostly is electric hydraulic bucket。The trolley run on loading bridge mostly is dual three-phase induction machine and drives, and the lowering or hoisting gear on trolley mostly is motor-driven pair of lifting speed reducing, double-steel wire rope reel is constituted。The lowering or hoisting gear of existing crane grab bucket rise, decline process in, all driven by drive motor, and the actuating speed of drive motor is slower, and the weight of grab bucket itself is bigger, it can be considered to rely on its gravity from dropping when grab bucket declines, to save the energy, the speed that grab bucket declines can be controlled flexibly, to improve work efficiency simultaneously。

Summary of the invention

For the problems referred to above, it is an object of the present invention to provide a kind of pillar slewing crane that can control hook or system grab bucket decrease speed, the saving energy flexibly。

For achieving the above object, this utility model be the technical scheme is that to include column, column top connecting cantilever beam, and cantilever beam is driven by rotating mechanism can be rotated around column or park；Arranging trolley on cantilever beam, described cantilever beam has trolley track and motion, motion drives trolley to seesaw along cantilever beam length direction；Described cantilever beam is also equipped with the cable moved with trolley；Described trolley is provided with lifting motor, and lifting motor is connected with the power shaft of reductor, and the output shaft of reductor is connected with reel, and the steel wire rope that described reel is wound around is by assembly pulley coupling hook or grab bucket；It is provided with gearshift between described lifting motor and reductor, described gearshift includes the first axle, described one end of first axle is connected by shaft coupling with the outfan of lifting motor, the other end of described first axle, by the first combined cover that can slide along the first axle axial direction, is connected with one end of the second axle；The described other end of the second axle is connected with the input of reductor, and the second axle is additionally provided with joint gear, and described joint gear is connected with the power shaft of retarder by the second clutch collar。

Preferably, described trolley also includes controller, is arranged on the velocity sensor linked up with or in grab bucket；Described retarder is connected with commutator, accumulator。

Preferably, the bearing pin of described assembly pulley is the shearing gravity sensor of pivot pin。

This utility model has the advantages that hook or grab bucket rely on it automatically to decline when declining, it is no longer rely on drive motor to drive, can effectively save the energy, speed controlling when hook or grab bucket decline is to be controlled by retarder, speed when hook or grab bucket decline can be controlled flexibly, improve work efficiency。

Accompanying drawing explanation

Fig. 1 is pillar slewing crane schematic diagram；

Fig. 2 is trolley schematic diagram；

Fig. 3 is gearshift schematic diagram；

Fig. 4 controls schematic diagram for grab bucket。

Detailed description of the invention

A kind of pillar slewing crane as Figure 1-Figure 4, including column 100, column 100 top connecting cantilever beam 2, cantilever beam 2 is driven by rotating mechanism can be rotated around column 100 or park；This is basically identical with prior art, repeats no more。Cantilever beam 2 arranges trolley 1, described cantilever beam 2 has trolley track 4 and motion 3, motion 3, drive trolley 1 to seesaw along cantilever beam 2 length direction。Namely trolley 1 is placed on trolley track 4, and is driven by motion 3 and can move along trolley track 4 or stop。

Described cantilever beam 2 is also equipped with the cable 5 moved with trolley 1；Described trolley 1 is provided with lifting motor 6, lifting motor 6 is connected with the power shaft of reductor 7, the output shaft of reductor 7 is connected with reel 8, the steel wire rope 9 being wound around on described reel 8 is by assembly pulley 10 coupling hook or grab bucket 11, link up with relatively simple common, only 11 illustrate to grab bucket below。It is provided with gearshift 20 between described lifting motor 2 and reductor 3, described gearshift 20 includes the first axle 21, one end of first axle 21 is connected by shaft coupling with the outfan of lifting motor 2, the other end, by the first combined cover 22 that can slide along the first axle 21 axial direction, is connected with one end of the second axle 23；The described other end of the second axle 23 is connected with the input of reductor 7, second axle 23 is additionally provided with joint gear 24, described joint gear 24 is connected with the power shaft of retarder 26 by the second clutch collar 25, described first clutch collar 22, second clutch collar 25 can be the inertia-type lock loop synchronizer used in automotive transmission field, it is also possible to be the lock unit of gear sliding type。

The velocity sensor 62 that described trolley 1 also includes controller 61, is arranged in grab bucket。In the process of crane loading weight, when needs allow grab bucket 11 decline, controller 61 controls the first clutch collar 22 by the first axle 21, second axle 23 separated, control the second clutch collar 25 to be connected between joint gear 24 and retarder 26 simultaneously, so grab bucket 11 moves downward under gravity, and the speed that it moves downward can be controlled by retarder 26, described retarder 26 is electric motor type retarder, at this moment retarder 26 is equivalent to an electromotor, by retarder 26 and commutator 63, accumulator 64 connects, gravitional force when namely can grab bucket 11 be declined is converted to electric energy, stored by accumulator 64。

When crane is for hoisting weight when shifting, need grab bucket 11 is risen and moved, then controller 61 controls the first clutch collar 22, first axle the 21, second axle 23 is connected, controlling the second clutch collar 25, general's joint gear 24 is separated with retarder 26, then starts lifting motor 2 simultaneously, grab bucket 11 is risen, hoists and mobile operating。

When grab bucket 11 is electric hydraulic bucket, better embodiment is, arranges velocity sensor 62 in grab bucket 11。Described accumulator 64 is placed in grab bucket 11, and be connected with grab bucket motor 65, when grab bucket 11 decline, the energy that its gravitional force produces passes to accumulator 525 by retarder 26, driving grab bucket motor 65 then through accumulator 64, grab bucket motor 65 drives oil pump, and then drives cylinder action, make bucket body open, complete to capture the action of weight。

When 11 overall weight of grabbing bucket change, the weight according to grab bucket 11 is needed to adjust retarder 26, grab bucket 11 is made to remain suitable decrease speed, therefore better embodiment is, the bearing pin of assembly pulley 10 is the shearing gravity sensor of pivot pin, before grab bucket 11 decline, accurately measures the weight of grab bucket 11 according to gravity sensor, then controller 61 adjusts the resistance of retarder 26, with the better decrease speed adjusting grab bucket 11。

Claims

1. a pillar slewing crane, including column (100), column (100) top connecting cantilever beam (2), cantilever beam (2) is driven can be rotated around column (100) or park by rotating mechanism；Arranging trolley (1) on cantilever beam (2), described cantilever beam (2) has trolley track (4) and motion (3), motion (3) drives trolley (1) to seesaw along cantilever beam (2) length direction；It is characterized in that: described cantilever beam (2) is also equipped with the cable (5) with trolley (1) movement；Described trolley (1) is provided with lifting motor (6), lifting motor (6) is connected with the power shaft of reductor (7), the output shaft of reductor (7) is connected with reel (8), and the upper steel wire rope (9) being wound around of described reel (8) is by assembly pulley (10) coupling hook or grab bucket (11)；Gearshift (20) it is provided with between described lifting motor (6) and reductor (7), described gearshift (20) includes the first axle (21), one end of described first axle (21) is connected by shaft coupling with the outfan of lifting motor (6), the other end of described first axle (21), by the first combined cover (22) that can slide along the first axle (21) axial direction, is connected with one end of the second axle (23)；The other end of described second axle (23) is connected with the input of reductor (7), and the second axle (23) is additionally provided with joint gear (24), and described joint gear (24) is connected by the power shaft of the second clutch collar (25) with retarder (26)。

2. a kind of pillar slewing crane according to claim 1, it is characterised in that: described trolley (1) also includes controller (61), is arranged on hook or the velocity sensor (62) on (11) of grabbing bucket；Described retarder (26) is connected with commutator (63), accumulator (64)。

3. a kind of pillar slewing crane according to claim 1, it is characterised in that: the bearing pin of described assembly pulley (10) is the shearing gravity sensor of pivot pin。