CN2072079U

CN2072079U - Hydraulic jack with self-adjusting bearing corner

Info

Publication number: CN2072079U
Application number: CN 90206888
Authority: CN
Inventors: 于嘉琦
Original assignee: STATE-RUN DALIAN SHIP YARD
Current assignee: STATE-RUN DALIAN SHIP YARD
Priority date: 1990-05-25
Filing date: 1990-05-25
Publication date: 1991-02-27

Abstract

The utility model relates to a hydraulic jack with self-adjusting bearing corner. When the load is unparallel with a bearing face, the spherical surface of a piston of the jack and the spherical surface of a regulating block of the bearing load can oppositely move, so the piston and a cylinder body keep centering, and the reliable work of the jack is ensured. The utility model has the advantages of simple structure, large bearing capability, convenient use, lifting of equipment with overweight and overlength, simple oil line concatenation, centralized control, etc.

Description

Hydraulic jack with self-adjusting bearing corner

The utility model relates to the object technical field that hoists.

The industrial object widely-used hydraulic jack that hoists that makes, the object that is only applicable in the parallel occasion with bearing surface of load face during generally with a jack job hoists.If load face and bearing surface are not parallel, there is a drift angle, bigger when loading, need several hydraulic jacks to work simultaneously, and under the effect of moment of torsion, the piston axis of hydraulic jack will depart from the cylinder body axis and reverse, and piston is forced upward movement under the effect of pressure oil, and the leak tightness that makes hydraulic actuating cylinder is damaged by pulling (1) and caused hydraulic jack to scrap (Fig. 1).Multi-cylinder type hydraulic jack (Fig. 2) can not be eliminated the moment of torsion that is produced in the above-mentioned service condition though piston than minor diameter is arranged, and does not also satisfy operating needs and cause damaging in real work.In the installation of main equipment, often need the bedding-in seat cushion, and there is the drift angle in required jackscrew often because mal of installing or load face and bearing surface are not parallel in the bedding-in, the jackscrew thread biting locking occurs, can't dismantle and efficient very low.

The purpose of this utility model is to hoist at the industrial weight that makes, and has the hydraulic jack of automatically regulating carrying corner structure, especially hoisting of large and heavy objects is more had tangible advantage.

The utility model can solve the problem that prior art exists satisfactorily.The object that hydraulic pressure thousand tops, self-regulation carrying angle can be used under load face and the not parallel situation of bearing surface hoists; Conventional tool such as replacement jackscrew are carried out micro-lifting to object; Can be used for that the object in the narrow and small occasion hoists between load and bearing surface; The hydraulic efficiency pressure system oil circuit can be connected into the series connection form easily, so that hoist overweight object or load face are equipment of different shape etc.

Hydraulic jack is that piston relatively moves with the cylinder body generation under the effect of fluid pressure, load is supported or lifting, and the sphere end (5) that self-regulation carrying angle hydraulic jack is characterised in that piston (2) carries out lifting work by regulating block (3) the support load that cooperates with it or to load.The principle at self-regulation carrying angle: when there are a drift angle in load and bearing surface, under the effect of fluid pressure, a bit (e) on the cylinder body in the rising (4) at first bears pressure F, under the effect of torque m=F * e, the piston sphere of hydraulic jack produces slippage with the sphere (5) that cooperates of regulating block, figure (5) till the carrying surface of cylinder body (4) and load surface are fitted, thereby reached the purpose of piston (2), finished the process at automatic conciliation carrying angle with cylinder body (4) parallel axes.

The utility model contains cylinder body (4), and an end is the piston (2) of sphere end (5), the regulating block (3) that matches with sphere end (5).Be processed with the above groove that seal ring is installed in 2 roads on the cylinder of piston (2), it is a sphere end (5) that an end of piston (2) has its other end of a shoe cream room (6), and the spherical radius of sphere end is determined by the setting range at carrying angle.Regulating block (3) one ends are plane, the other end be one with the identical sphere of spherical radius of the sphere end of piston (2), the diameter of general cylindrical regulating block (3) is not more than 2/3rds of piston boit footpath, and regulating block (3) also can be the cuboid that an end is a sphere.

Be processed as the connection holes (7) of a plurality of hydraulic jack hydraulic circuit tandem working on the piston/cylinder, when overload or several hydraulic jack associated working of the excessive need of object, the sealing resistor can be unloaded, be coupled to the input port of another hydraulic jack, the big hydraulic oil that send by high-pressure pipe.

Self-regulation carrying angle hydraulic jack, easy to use, reliable, solved the installation question in the occasion at the present bottom surface of main equipment and bearing surface existence hectare oblique angle, even there is not a hectare oblique angle, also since the utlity model has simple in structure, but serial connection work is convenient and advantage such as centralized control, and in the hoisting, finely tuning in large-scale overweight equipment is installed unique advantage is arranged, and can replace hydraulic jack commonly used, the jackscrew conventional tool.

The Figure of description drawing is described as follows:

Fig. 1. existing hydraulic jack force analysis figure under the not parallel state of load and seat surface;

Fig. 2. multicylinder hydraulic jack structure scheme drawing;

Fig. 3. self-regulation carrying angle hydraulic jack structural representation;

Fig. 4. self-regulation carrying angle hydraulic jack force analysis scheme drawing;

Fig. 5. self-regulation carrying angle hydraulic jack working state schematic representation.

Embodiment:

A kind of solve hundreds of tons of equipment install in self-regulation carrying angle its mode of operation of hydraulic jack (Fig. 5) of erecting equipment in the bedding-in seat cushion, the utility model is made up of cylinder body (4), piston (2), regulating block (3) etc.Be processed with oil circuit a, b, c, d(Fig. 4 on the cylinder body (4)) and have the connection holes (7) of a plurality of hydraulic jack tandem workings.When single hydraulic jack was worked, this connection holes (7) was stopped up by the sealing resistor, when several hydraulic jack associated working of need, the sealing resistor can be unloaded, and was coupled to (hydraulic oil) input end of another hydraulic jack by high-pressure pipeline.Be processed with 2 circular grooves that sealing member is installed on the face of cylinder of piston (2), an end of piston (2) is processed with a butterfly shape shoe cream room (6), and the other end is that this sphere top of a sphere (5) has one to install and dismounting tapped blind hole (10).Regulating block (3) is a cylinder, and wherein an end is spherical radius and the identical sphere of piston (2) spherical balls radius surface, cooperates with the sphere with piston (2).Drip along fitting surface during work lubricant is arranged.Because required equipment lifting altitude does not require very greatly in the bedding-in pad, apart from little and equipment is heavier, so oil cylinder piston diameter of the present utility model is bigger, oneself height is little between pedestal (9) and load (8), and load-carrying capacity is big.Its height overall is 45 millimeters, 20 millimeters of piston stroke, and the about 1000KN of load capacity, the maximum slope at self-regulation carrying angle is 1:30.Generally speaking, this jack is swung to use, and promptly cylinder body makes progress, and regulating block is down shown in figure (5).

Claims

1, self-regulation carrying angle hydraulic jack is characterized in that containing cylinder body (4), and an end is the piston (2) of sphere end (5), the regulating block (3) that matches with sphere end (5).

2, self-regulation according to claim 1 carrying angle hydraulic jack is characterized in that being processed with the above groove that seal ring is installed in two roads on the cylinder of piston (2), and an end of piston (2) is sphere end (5), and the other end has shoe cream room (6).

3, self-regulation according to claim 1 carrying angle hydraulic jack is characterized in that regulating block (3) one ends are the cylinder of sphere, or an end is the cuboid of sphere, and spherical radius is identical with sphere end (5) on the piston (2).

4, the angle hydraulic jack is carried in self-regulation according to claim 1, it is characterized in that having on the cylinder body (4) oil inlet and is the connection holes (7) of hydraulic circuit tandem working.