RU2436725C1 - Lifting-and-conveying machine - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to lifting-and-conveying machinery, particularly, to hydraulic truck cranes. Proposed device comprises chassis bearing frame to support rotary platform with cantilever section, platform turn drive, counterweight, cargo lifting mechanism, and counterweight cross beam mounted on chassis frame to turn thereon. Cross beam turn drive is made up of a hydraulic cylinder. Platform cantilever section is made up of a plate with pockets. Aforesaid counterweight is furnished with lugs to be aligned with platform pockets and be secured therein.

EFFECT: simple servicing, higher reliability and strength of structural elements in motion.

4 cl, 6 dwg

Description

The invention relates to hoisting and transport engineering, in particular to automotive hydraulic crane installations, and can be used to perform loading and unloading and vertical transportation of goods in industry, construction and other sectors of the economy.

Known self-propelled crane (certificate for utility model No. 2574, IPC V66C 23/74, 06/03/1994) containing a rotary frame mounted on a self-propelled chassis with a cantilever protruding part, an arrow mounted on the frame with the possibility of rotation in a vertical plane, and placed on the cantilever protruding part of the rotary frame, the counterweight and the cargo winch, while the counterweight is mounted to move along the guides. The cantilever protruding part of the rotary frame is pivotally mounted with the possibility of sagging it in the transport position.

The presence of a counterweight in the transport position creates an additional bending moment on the swing frame, increases the instability of the crane, creates an additional load on the chassis.

Known hydraulic crane installation (certificate for utility model No. 22658, IPC В66С 23 / 00.11.09.2001), containing, in particular, a support frame mounted on a chassis, a base unit for a slewing ring with a rotary platform equipped with a drive, a telescopic boom , load lifting mechanism, counterweight and hydraulic system with oil tank. Moreover, the load lifting mechanism is installed on the upper side of the cantilever part of the turntable, on the lower side of which a counterweight is fixed.

The design of the known device does not provide for the possibility of quick and convenient installation and dismantling of the counterweight, which leads to a significant decrease in the strength characteristics, stability of the crane in the transport mode: an additional load on the chassis, an additional bending moment on the swing frame.

The aim of the present invention is to simplify the maintenance of the lifting and handling device associated with the installation and dismantling of the counterweight, improving the reliability, strength characteristics of structural elements in transport mode.

The technical result is achieved by the fact that the lifting and transporting device containing the landing gear of the chassis, mounted on it with the possibility of rotation of the platform with the cantilever part, the drive of rotation of the platform, the lifting mechanism of the load, the counterweight, according to the invention is equipped with a traverse for accommodating the counterweight mounted on the supporting frame of the chassis with the possibility of rotation, the drive of rotation of the beam, the cantilever part of the platform is made in the form of a plate with pockets, the counterweight is made with eyes with holes for alignment with pockets LTL platform and fixing them. The platform is mounted with a 360 degree rotation, the traverse rotation drive is made in the form of a hydraulic cylinder, while the base of the hydraulic cylinder is fixed with an axis in the bracket to the support frame, and the hydraulic cylinder rod is fixed on the axis in the bracket and connected to the traverse.

The invention is illustrated by drawings, where

figure 1 shows a General view of the device with a counterweight mounted on the traverse;

figure 2 is a General view of the device with the rotation of the turntable towards the yoke;

figure 3 is a General view of the device with a counterweight in working condition;

figure 4 is a view along arrow a in figure 3;

figure 5 is a view along arrow B in figure 2;

in Fig.6 is a view along arrow B in Fig.2.

The hoisting-and-transport device comprises a counterweight 1, a platform 2 mounted on the chassis support frame 3 with a 360 degree rotation, a platform 2 rotation drive (not shown), a traverse 4 for positioning the counterweight 1, a traverse 4 turning hydraulic cylinder 5 relative to the chassis support frame 3 , load lifting mechanism (not shown). The base of the hydraulic cylinder 5 is fixed on the chassis support frame in the bracket 8 on the axis 9, the rod 10 of the hydraulic cylinder 5 is connected to the traverse 4 and fixed in the bracket 11 on the axis 12 so that when the rod 10 of the hydraulic cylinder 5 is extended, the beam 4 is rotated relative to the chassis chassis 3 in the vertical plane. The platform 2 contains a cantilever part, which is made in the form of a plate 13. The counterweight 1 contains a sheet 14, as well as eyelets 15 with holes. The plate 13 is made with pockets 16 for mounting the counterweight 1 using the latches 17. The design of the beam 4 provides parallelism, within the tolerance, of the upper part of the counterweight 1 and the lower part of the plate 13.

Installation of the counterweight 1 is as follows. The counterweight 1 using the load lifting mechanism is installed on the beam 4 (figure 1). After that, the working fluid is supplied to the hydraulic cylinder 5, the rod 10 of the hydraulic cylinder 5 raises the beam 4 together with the counterweight 1. Next, the platform 2 is deployed using the rotation mechanism so that the plate 13 engages with the sheet 14 of the counterweight 1, and the holes of the eyes 15 of the counterweight 1 match with pockets 16 of the plate 13. Then, the latches 17 are inserted into the holes of the eyes of the counterweight 1. After fixing the counterweight 1 on the plate 13 of the platform 2, the rod 10 of the hydraulic cylinder 5 is pulled, the crosshead 4 is lowered to its original position. After that, the platform 2 with the counterweight 1 using the drive rotation of the platform deploy in the working position at the desired point within 360 degrees (figure 3). Counterweight 1 is installed.

The procedure for dismantling the counterweight 1 is performed in the reverse order.

The proposed device greatly simplifies the installation of the counterweight before starting the operation of the lifting and transport device and its dismantling after its completion, which eliminates the problems associated with the presence of the counterweight in the lifting and transport device in transport mode.

Claims (4)

1. A hoisting-and-transport device comprising a chassis support frame, a platform with a cantilever part rotatably mounted on it, a platform rotation drive, a load lifting mechanism, a counterweight, characterized in that the device is equipped with a traverse for accommodating a counterweight mounted with a support turning, traverse turning drive, the console part of the platform is made in the form of a plate with pockets, the counterweight is made with eyes with holes for aligning with the pockets of the plate of the turntable and fixed eenia in them. 2. The device according to claim 1, characterized in that the platform is mounted rotatably 360 °. 3. The device according to claim 1, characterized in that the traverse rotation drive is made in the form of a hydraulic cylinder. 4. The device according to claim 3, characterized in that the base of the hydraulic cylinder is fixed with an axis in the bracket to the chassis support frame, and the hydraulic cylinder rod is fixed on the axis in the bracket and connected to the traverse.

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