Self-aligning device for support platform

FIELD: machine construction.

SUBSTANCE: invention relates to the field of machine construction and can be used during construction of carrying and lifting machines. Self-aligning device for a support platform contains a revolving cabin, support cabin of a portable chassis, amplifier control unit, tilting sensor, oriented in longitudinal and transverse planes of the platform, swiveling support, control panel, sensor contacts plunger pins with the support surface, hydraulic cylinders.

EFFECT: increasing accuracy of aligning.

3 dwg

 

The invention relates to mechanical engineering and can be used in the design of hoisting-and-transport machines.

A device for providing horizontal support platform crane, containing the supporting platform movable chassis, hydraulic equipment with a pump to create pressure, remote power cylinders, located at the corners of the perimeter of the support platform, and the spool valve control hydraulic cylinders [1].

This device does not automatically align in the horizontal plane of the supporting platform and requires considerable time to bring the crane into position.

Closest to the claimed device is a lift-the equalizer [2]. This device has a turning circle, four remote hydraulic cylinder (two on each side - front and back) and the control unit. Part of the turntable includes two mating rings of wedge-shaped cross-section, located between the swivel base of the chassis of the car. By turning the rings is provided a rotary angle of the upper rotary part relative to the horizontal plane, that is, the correction angle. The control unit simultaneously with the correction of inclination provides extension outrig the ditch (remote hydraulic cylinders) and after putting the machine, measuring the angular position of the sensors, re-adjusts it by outriggers.

The above device is not effective because of the need for adjustments to the horizontal plane of the supporting platform, also produces forces tending to displace the ring of wedge-shaped cross-section relative to each other, resulting in the need for additional device, which greatly complicates the design.

The technical result achieved by the proposed device is the automatic alignment in the horizontal plane of the supporting platform movable chassis, reducing the time to bring the crane into position, the opportunity to work in various temperature regimes and improving the accuracy of alignment.

The proposed automatic alignment of the support platform includes a swivel cabin, a support platform mobile chassis, amplifier control unit, tilt sensors, oriented in the longitudinal and transverse planes of the platform, swivel bearing, control panel, sensors contact rod support surface and hydraulic cylinders.

A common feature of the prototype and the claimed device is supporting platform movable chassis, swivel cab, remote support hydraulic cylinder device is istwo control.

Distinctive features are: the presence of the sensors of the contact rods of the hydraulic cylinders with the supporting surface, amplifying control unit made in the form of amplifier signals from the tilt sensors, oriented in the longitudinal and transverse directions, consisting of a heavy ball, light curtains (e.g., plastic), toroidal channel, the annular cavity and the photosensitive elements.

Control device for automatic alignment of the support platform is carried out with the remote control toggle switch managing the three-position solenoid valve.

The inventive device is depicted: figure 1 is a - side view; figure 2 is a tilt sensor; figure 3 - schematic hydraulic diagram.

1 shows the automatic alignment of the supporting platform, which includes the following elements: rotary cabin 1, a support platform movable chassis 2, the amplification control unit 3, the tilt sensors 4, oriented in the longitudinal and transverse planes of the supporting platform, swivel bearing 5, the control panel 6, the extension of the hydraulic cylinders 7 with the sensors of the contact rods of the hydraulic cylinders with the supporting surface 8.

Figure 2 shows the tilt sensor, comprising the following elements: heavy ball 9, a light shutter 10, a toroidal channel 11,the annular cavity 12, the led 13 and the photodiode 14.

Figure 3 shows a schematic hydraulic circuit diagram of an automatic alignment of the supporting platform, which includes the following elements: the extension of the hydraulic cylinders 7, hydraulic tank 15, a pump 16, a filter 17, the three-position solenoid valve 18 and a two-position electromagnetic valves 19.

The device operates as follows. Before starting work, the operator at the control unit 6 switches the toggle switch in the position of the lowering of the extension rods of the hydraulic cylinders 7, which occurs prior to their contact with the supporting surface. After tripping the sensor contact with the supporting surface 8 signal amplification in the control unit 3 to switch on the auto-leveling platform. The platform alignment occurs in two stages. Initially eliminated transverse roll due to synchronous operation of the pair of side cylinders on the left or right, depending on the direction of tilt. The hydraulic cylinders of one of the sides will stop when the sensor transverse tilt of his curtain blocked the light-sensitive elements (for example, photodiode etc). Then work becomes a pair of front or rear cylinders (depending on the direction of the longitudinal tilt), who finally deduce the platform horizontally in the position.

Manufacturer of automatic alignment of the reference platform is based on components and assemblies, mass-produced by industry.

Sources of information

1. The crane car military COP-3572. Technical description and operating instructions. - M: order of the red banner of Labour Voenizdat, Ministry of defense, USSR, 1980.

2. The journal of Construction and road machines" No. 5, - M: VNIIPO, 1998, p.44, or IMS. M: VNIIPO, 1997, No. 6, vyp. MPCV.

The automatic alignment of the support platform containing a support platform mobile chassis, swivel cab, remote support hydraulic cylinders, control device, characterized in that the extension of the hydraulic cylinder is rigidly fixed to the sensors of the contact rods of the hydraulic cylinders with the supporting surface, signaling contact of all stocks on the amplifier control unit, which in turn amplifies the signal from the tilt sensors, oriented in the longitudinal and transverse directions, representing a heavy ball and a light shutter that can move in a toroidal channel and the annular cavity, respectively, to the complete overlap of light-sensitive cells upon reaching the horizontal position.



 

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