SU1087455A1 - Swing-out counterweight for load-handling machine - Google Patents

Description

The invention relates to a lifting transport machinery, namely to the working equipment of the crane driver,

A folding counterweight to a lifting machine is known, containing a frame (boom) pivotally connected to the base machine at two points: at the bottom by means of brackets on the crawler carriage and at the top hour - by changing the overhang of the hydraulic jib frame, the other end of which is pivotally mounted on the portal of the pipelayer; the movable carriage, moving the shuyus ™ and guiding the frame, and typesetting loads mounted on the li carriage.

When relocating from an object to an object on an automobile or railway transport, pipe-laying cranes, especially of large carrying capacity, should be partially dismantled. Before being loaded onto a vehicle, vehicles that support the installed size J are removed from the transport vehicle, including a counterweight,

The disadvantage of this device

is the need to apply {an additional lifting mechanism with an appropriate load-carrying characteristic for carrying out; 5 installation: to and dismantling works, which causes an increase in material costs,

The closest to the invention on the technical essence and the achieved result is a folding

pooan oats goose-lifting machine,

.

with pivots CMOFTHpoBaHHyro

on the portal of the machine a frame with cargoes fixed on p. i and the hydraulic cylinder emenen —sh of the counterweight departure 2J,

For mounting (dismounting) the counterweight, the boom with the working body rests on the fruit, creating a tilting moment relative to the rear axis (sprocket) of the base machine. When the specified angle of inclination of the base machine is reached, the weight boom of the counterweight cargo reaches a certain position above the ground at which the installation (disassembly) of the loads is possible

counterweight.

For attachment of goods to the counterbalance boom, the design is not known.

I possesses sufficient maneuverability

and therefore the installation of the load to the suspension arm is difficult. When creating a tilting moment of a node, structures exert large loads, which negatively affects the reliability and durability of the machine. Hanging the machine on the working tool and the rear axle of the base machine adversely affects the safety of the installers.

The aim of the invention is to reduce the cost of relocating the lifting machine.

This goal is achieved by having a folding counterweight containing a frame hinged on the machine portal with loads fixed on it and a hydraulic cylinder for changing the counterweight attachment provided with a frame position lock relative to the portal during assembly work, with a guide groove made in the frame and locking pins installed to secure the eyelet hydraulic cylinder rod changes the offset of the counterweight in the extreme lower and upper positions.

FIG. 1 shows a folding counterweight, a plan view; in fig. 2 the same, side view; in fig. 3 and 4 schemes of work of working equipment; FIG. 5 is a section A-A in FIG. one,

The folding counterweight of a lifting machine consists of a frame 1 hinged on the brackets of the portal 2 of the base machine 3, a hydraulic dial 4 changes the frame attachment connecting the latter with the portal 2 of the base machine 3, loads 5 mounted on the frame 1 using fasteners 6.

In the frame. 1, a longitudinal guide groove 7 is made (the possible shape of its cross section is shown in Fig. 5). In the bottom 8 or top 9 holes on. the ends of the groove 7 can be inserted fingers securing the eyelet 10 of the rod of the hydraulic cylinder 4,

The counterweight is also provided with an additional link 11, which can be made either in the form of a detachable pull, or as a guide, with an equally raised finger between the corresponding lugs fixed on the frame 1 and the portal 2.

The tilting counterweight works in the following way.

For dismounting the hydraulic cylinder 4, the counterweight is transferred from the transport position (the counterweight is attached) to the working position (the counterweight is folded). In this position, the frame 1 is rigidly fixed by the coupling 11 (Regarding the base machine 3. After the finger is removed from the top hole 9 of the groove 7, the cylinder stem 4, moving along the groove 7 of the frame 1, occupies the lowest position in which it is locked with a finger. Then the frame 1 is released from the communication 11 and the piston rod 4 is extended until the weights 5 of the counterweight fall to the ground or special Next, weights 5 are disconnected from frame 1, the hydraulic cylinder is moved to its upper position by means of link 11, in which it is locked with a finger and the frame is transferred to transport position 5. Installation of weights 5 on counterweight frame 1 is in reverse order Frame 1 is lowered from the transport position, for which the hydraulic cylinder 4 is preliminarily transferred to the lowest position by means of link 11 and locked with a finger, inserting 55 into hole 8. Then release link 11 and maneuver the base machine 3 and frame 1 to coincide joints on cargo 5 and frame 1, after which weights are fixed on frame 1 with fasteners 6. Next, the hydraulic cylinders 4 lift the frame 1 with weights 5, fix it relative to the base machine 3 by coupling 11 and release the hydraulic cylinder 4, removing the finger from the bottom hole 8 of the groove. Pushing the rod of the hydraulic cylinder 4, moves its stem along the groove 7 up to the stop, where it is locked with a Finger in the hole 9. Then the frame 1 is released from the connection 11, after which the counterweight is in the working zone of departure change. Thus, the proposed design of a folding counterweight of a lifting machine provides for the installation (disassembly) of the counterweight without attracting additional lifting means and helps to reduce the costs of relocating the crane.

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Claims (2)

FOLDING LIFT OF THE LOADING MACHINE, comprising a frame pivotally mounted on the machine portal with weights fixed to it and a hydraulic cylinder for changing the counterweight departure, characterized in that, in order to reduce the cost of relocating the machine, it is equipped with a frame position lock relative to the portal during installation, and the frame is made guide groove and locking fingers are installed to secure the eye of the rod of the hydraulic cylinder 2. British patent No. 1294633, CL E 02 F 9/18,. published. 1972 (prototype). tivoves in extreme lower and upper positions. Fi.1