CN216737321U - Automatic balancing device for balancing weight - Google Patents

Abstract

The utility model discloses an automatic balancing device for a balancing weight, which comprises a rotary table, a detachable counterweight frame, a telescopic assembly and the balancing weight, wherein the detachable counterweight frame is fixedly arranged on the rotary table, the detachable counterweight frame is connected with the telescopic assembly, the telescopic assembly is provided with a first oil cylinder, the first oil cylinder drives the telescopic assembly to move along the horizontal direction, and the telescopic assembly is provided with a second oil cylinder for lifting the balancing weight.

Description

Automatic balancing device for balancing weight

Technical Field

The utility model belongs to the technical field of cranes, and particularly relates to an automatic balancing device for a balancing weight.

Background

A folding arm type crane belongs to one of hoisting machinery, and is a machinery which does circulation and intermittent motion. One duty cycle includes: the fetching device lifts the object from the fetching place, then moves horizontally to the designated place to lower the object, and then carries out reverse movement to return the fetching device to the original position so as to carry out the next cycle.

The folding arm crane has unique operation advantages in space-limited environments such as tunnels and the inside of a factory building, and in order to improve operation stability, a rotary table of a general large-tonnage folding arm crane can adopt a structural form containing a balance weight. In order to adapt to narrow operation environment, the counterweight fixing frame of the rotary table can be designed to be detachable, but the extension amount of the counterweight telescopic frame can be limited by the detachable counterweight fixing frame, and the extension range is small. Meanwhile, when the turntable of the existing detachable counterweight device is used for counterweight loading and unloading, the counterweight block needs to be placed at a fixed point of a platform of a crane frame to realize the disassembly, and the disassembly is complex, the efficiency is low, and the automation degree is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic balancing device for a balancing weight, which further improves the working efficiency of a crane and meets the requirement of the crane on conveying operation in a narrow space.

In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides a balancing weight automatic balancing device, includes the revolving stage, the fixed counter weight frame that can dismantle that is equipped with on the revolving stage, can dismantle and be connected with flexible subassembly on the counter weight frame, be equipped with first hydro-cylinder on the flexible subassembly, the flexible subassembly of first hydro-cylinder drive moves along the horizontal direction, be equipped with the second hydro-cylinder that is used for the lifting balancing weight on the flexible subassembly.

Preferably, the telescopic assembly comprises a telescopic frame, and the telescopic frame is slidably connected with the detachable counterweight; the first oil cylinder drives the telescopic frame to transversely move and extend into the counterweight block provided with the cavity.

Preferably, the driving mechanism comprises a first oil cylinder; one end of the first oil cylinder is connected with the telescopic frame through a pin shaft; the other end of the first oil cylinder is hinged with the detachable counterweight frame.

Preferably, a length sensor is arranged on the telescopic frame, and the sensor measures the transverse moving distance of the telescopic frame.

Preferably, an angle encoder is arranged at the front end of the rotary table and used for detecting the rotation angle of the rotary table.

Preferably, the detachable counterweight frame and the rotary table are detachably connected through a pin shaft.

Preferably, the pin shaft is provided with a spring clip.

Compared with the prior art, the utility model has the following beneficial effects:

on one hand, a detachable counterweight frame is fixedly arranged on a rotary table, a telescopic assembly is connected onto the detachable counterweight frame, a first oil cylinder is arranged on the telescopic assembly, the first oil cylinder drives the telescopic assembly to move along the horizontal direction, and a second oil cylinder used for lifting a counterweight block is arranged on the telescopic assembly; the telescopic assembly comprises a telescopic frame, and the telescopic frame is connected to the detachable counterweight frame in a sliding manner; the first oil cylinder drives the telescopic frame to move transversely to stretch the second oil cylinder into the counterweight block with the cavity. The automatic loading and unloading of the balancing weight at any position within the range of the maximum radius by taking the rotation center of the rotary table as the center of a circle and the distance from the rotation center when the telescopic frame is fully extended as the maximum radius are realized.

On the other hand, through dismantling the counterweight frame and being connected with dismantling of flexible subassembly, can reduce revolving stage radius of gyration, satisfy the operation demand of hoist in narrow space.

Drawings

Fig. 1 is a schematic structural diagram of a counterweight conveying device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a telescoping assembly provided in an embodiment of the present invention;

FIG. 3 is a schematic view of the assembly of the telescoping assembly and the turret according to an embodiment of the present invention;

in the figure: 1-an angle encoder; 2-a turntable; 3-detachable counterweight frame; 4-a telescoping assembly; 401-a telescopic frame; 402-a first cylinder; 403-a sensor; 404-a second cylinder; 5-a balancing weight; 6-a spring clip; 7-pin shaft.

Detailed Description

The present invention is further described with reference to the accompanying drawings, and the following examples are only for clearly illustrating the technical solutions of the present invention, and should not be taken as limiting the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1, an embodiment of the present invention provides a counterweight self-weight balancing device, including a rotary table 2 disposed on a crane, where the rotary table 2 is set to be circular or elliptical; the rotary table is characterized in that a detachable counterweight frame 3 is arranged on the rotary table 2, the detachable counterweight frame 3 is fixedly connected with the rotary table 2, an angle encoder 1 is arranged at the front end of the rotary table 2, and the angle encoder 1 is used for detecting the rotation angle of the rotary table 3.

As shown in fig. 2 to 3, a telescopic assembly 4 is connected to the detachable weight rack 3, the telescopic assembly 4 includes a telescopic frame 401, a first oil cylinder 402 is arranged in the telescopic frame 401, and one end of the first oil cylinder 402 is connected to the telescopic frame 401 through a pin; the other end of the first oil cylinder 402 is hinged with the detachable counterweight frame 3, and the first oil cylinder 402 drives the telescopic frame 401 to transversely move for the telescopic frame 401 to stretch; a sensor 403 is arranged on the telescopic frame 401, the sensor 403 is a length sensor, and the sensor 403 measures the transverse moving distance of the telescopic frame 401, so that the telescopic distance of the telescopic frame 401 can be conveniently measured; a second oil cylinder 404 is further arranged on the telescopic frame 401, and the second oil cylinder 404 is used for lifting a balancing weight 5; in addition, be equipped with the square chest on the revolving stage 2, can dismantle the weight rack 3 upper shield and be equipped with the square chest, the square chest on the revolving stage 2 and the square chest laminating on can dismantling the weight rack 3.

A cavity is arranged in the balancing weight 5, the cavity is provided with an opening in the horizontal direction, and the second oil cylinder 404 extends into the balancing weight 5 to lift the balancing weight 5; the detachable counterweight frame 3 and the rotary table 2 are detachably connected through a pin shaft 7, a spring clamp 6 is arranged on the pin shaft 7, and the spring clamp 6 is used for fixing the pin shaft 7 and preventing the pin shaft 7 from falling off; the counterweight 5 is automatically assembled and disassembled at any position within the range of maximum radius by taking the rotation center of the rotary table 2 as the center of a circle and taking the distance from the rotation center when the telescopic frame 401 is fully extended as the maximum radius; the utility model has simple operation, high automation degree and high operation efficiency.

A working method of an automatic balancing device of a balancing weight comprises the following steps: when the counterweight block 5 needs to be moved, the first oil cylinder 402 drives the telescopic frame 401 to transversely stretch and contract to adjust the target distance from the telescopic frame 401 to the counterweight block 5, and at the moment, the sensor 403 detects the stretching distance of the telescopic frame 401; the second oil cylinder 404 drives the balancing weight 5 to lift, and the telescopic frame 401 is matched with the rotary table 2 to convey the balancing weight 5 to the crane.

Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a balancing weight automatic balancing device, its characterized in that, includes revolving stage (2), fixed being equipped with on revolving stage (2) can dismantle weight frame (3), can dismantle and be connected with flexible subassembly (4) on weight frame (3), be equipped with first hydro-cylinder (402) on flexible subassembly (4), first hydro-cylinder (402) drive flexible subassembly (4) along the horizontal direction motion, be equipped with second hydro-cylinder (404) that are used for lifting balancing weight (5) on flexible subassembly (4).

2. A clump weight automatic balancing device according to claim 1, characterized in that said telescopic assembly (4) comprises a telescopic frame (401), said telescopic frame (401) being slidably connected to the removable weight frame (3); the first oil cylinder (402) drives the telescopic frame (401) to transversely move and extend into the balancing weight (5) with the cavity.

3. The automatic balancing device for clump weights as claimed in claim 2, wherein one end of the first oil cylinder (402) is connected with the expansion bracket (401) through a pin; the other end of the first oil cylinder (402) is hinged with the detachable counterweight frame (3).

4. The counterweight automatic balancing device of claim 3, characterized in that the telescopic frame (401) is provided with a length sensor (403), and the sensor (403) measures the transverse moving distance of the telescopic frame (401).

5. The balancing weight automatic balancing device of claim 1, wherein the front end of the rotary table (2) is provided with an angle encoder (1), and the angle encoder (1) is used for detecting the rotation angle of the rotary table (2).

6. The automatic balancing device of claim 1, wherein the detachable weight frame (3) and the rotary table (2) are detachably connected by a pin (7).

7. The balancing weight automatic balancing device of claim 6, wherein the pin (7) is provided with a spring clamp (6).

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