JP2602942Y2 - Crane inspection weight - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load weight used for checking whether or not a crane is normally driven by applying a load of a specified weight.

[0002]

2. Description of the Related Art Crane for 3t or more is required to be periodically inspected for ensuring safety. This inspection method checks whether there is any abnormality by actually suspending a specified weight, and it is said that any heavy object suspended on the crane can be used if the specified weight is confirmed. Therefore, for example, there is a case where a forklift or a lump of iron whose weight is known in advance is inspected by hanging it on a sling with a wire. With such a method, not only the weight itself is uncertain, but also the shape is indeterminate and extremely heavy, so it is difficult to handle, and a falling accident due to detachment or breakage of the sling hanging wire may occur, A special crane inspection weight has been long-awaited.

[0003] Therefore, in order to make handling a little easier, weights dedicated to crane inspection have been proposed, and some of them have already been provided. This weight for crane inspection is suspended using a slinging wire. The wire is easy to hook, and grooves are provided on the left and right for the purpose of preventing slippage. It is a plate-shaped metal weight having a predetermined weight. As described above, since the structure is hung by the wire hook, even if the countermeasures for preventing the slippage are taken, there is a risk that the wire may suddenly collapse if the balance is lost due to the variation in the length of the wire or the manner of operation. Or 30-t because wires are not necessarily new
If the object is heavy, there is a possibility that an accident may occur in which the weight is dropped by cutting from a slight scratch or a damaged portion. In addition, there is a safe hooking method determined for preventing a wire dropping accident, and there is a risk that an ordinary person may use the wire hook because of lack of knowledge.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and is an extremely safe crane which has an accurate weight, is easy to handle, and has no risk of shifting the weight due to loss of balance. This is to provide an inspection weight.

[0005]

In order to solve the above problems, the present invention comprises a weight mount A and a unit weight B. The weight mounting table A has holder portions 3 projecting from four corners and diagonal directions of a square metal weight plate 1 having a weight fitting frame 2 disposed on the upper surface thereof.
A base end portion 7a of a suspension arm 7 having a suspension portion 9 at an upper end portion is pivotally attached to the holder portion 3 so as to be swingable within a predetermined angle range, and a crane suspension ring 13 is attached to each of the suspension portions 9. Each end 14a of a more branched suspension chain 14 of the same length is engaged. The unit weight B includes several weight units that are loosely fitted to the weight fitting frame 2.

The unit weight B is a cube having a lifting portion 15 and a non-slip convex portion 16 formed on the upper surface thereof, and a non-slip concave portion 17 fitted to the non-slip convex portion 16 on the bottom surface. is there.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A crane inspection weight according to the present invention will be described below with reference to the embodiments shown in FIGS. 1 to 3. The crane inspection weight comprises a weight mounting base A and a plurality of unit weights B. As shown in FIG. 3, the weight mount A is supported and fixed to a base 5 having a square metal weight plate 1 framed diagonally to four sides by H-shaped steel, as shown in FIG. The square frame-like weight fitting frame 2 is arranged in four sections on the upper surface. Then, a diagonal frame 4 constituting the base 5 is extended from four corners of the base to form a holder part 3, and the holder part 3 is formed.
In addition, a base end portion 7a of a suspension arm 7 having a suspension portion 9 at an upper end portion is pivotally mounted so as to swing within a predetermined angle range. Further, each end 14a of a suspension chain 14 of the same length branched from the crane suspension ring 13 is attached to each of the suspension portions 9.

Next, the unit weight B is a cube that is loosely fitted to the weight fitting frame 2 of the frustum base plate 1, and has a lifting part 15 and a slip-preventing convex part 16 when it is overlapped on its upper surface. A shift preventing concave portion 17 to be fitted to the shift preventing convex portion 16 is formed. The weight of the cubic unit weight B is 2000 kg, 10
A necessary number of unit weights such as 00 kg, 500 kg, 250 kg, and 125 kg are provided. For example, in the case of a 4t crane inspection, as shown in FIG.
Since it is on, three 1-ton weights are stably mounted in the weight fitting frame 2 on this. Weight setting is 1 ton
From the weight of the suspension weight alone, by stacking the unit weights B in stages, for example, if eight 4-ton weights are used, 32 tons are used.
A setting of several tens ton, such as n, is possible. If the unit weights B are stacked in storage even when not in use, the unit weights can be stored in a small space, and since they are fitted up and down, there is no risk of collapse and safety is ensured.

[0009]

Since the present invention has the above construction, the weight mounting table A has one unit weight. If a unit weight B is added to this table so that the weight becomes the inspection weight, the total weight of the weight is the crane K. Inspection weight of specified weight. It is only necessary to hang the crane suspension ring 13 on the crane K without using a wire to load the crane K. For this reason, anyone can undoubtedly easily hang it up without any specialized knowledge. Further, the suspension arm 7 is pivotally attached to the holder portion 3 in a substantially upright state, and the suspension portion 9 is located above the center of gravity, so that the unit weight B is extremely stable, and the length of the suspension chain 14 is reduced. Since they are the same, there is no danger of losing balance. Further, since the weight fitting frame 2 is provided on the upper surface of the metal frustum base plate 1, the unit weight B placed therein does not shift. In addition, since the unit weight B has the slip preventing protrusion 16 and the slip preventing recess 17, both are fitted up and down when they are stacked, and there is no risk of lateral shifting or collapse. Since the weight is divided into small units, if there is a forklift or the like capable of unloading and transporting about 1 to 2 tons, the forklift can be carried to the destination, and further, the unit weight B can be rearranged, placed, and moved by the lifting unit 15. And the like are extremely easy to adjust the load weight. As a result, the crane can be inspected very easily and safely.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a use state of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a bottom view of the present invention.

[Description of sign]

 Reference Signs List A weight mount B unit weight K crane 1 weight base plate 2 weight fitting frame 3 holder part 4 diagonal frame 5 base 6 pivot hole 7 hanging arm 7a base end of hanging arm 7b hanging Upper end of arm 8a Pivot hole 8b Pivot hole 9 Hanging part 10 Metal rod shaft 11 Metal rod 12 Pin 13 Crane suspension ring 14 Suspension chain 14a Each end of suspension chain 15 Lifting unit 16 Detachment protrusion 17 Stopper Recess 18 Horizontal groove 19 Circular metal reinforcing plate

Claims (2)

(57) [Scope of request for utility model registration] 1. A weight mounting base A and a unit weight B, wherein the weight mounting base A has four corners and diagonal directions of a square metal frustum plate (1) having a weight fitting frame (2) disposed on an upper surface thereof. And a base portion (7a) of a hanging arm (7) having a hanging portion (9) at an upper end thereof is provided at a predetermined angle range. A suspension chain (14) of the same length which is pivotably pivoted and is branched from the crane suspension ring (13) to each of the suspension portions (9).
And a crane inspection weight comprising a plurality of weight units which are loosely fitted to the weight fitting frame (2). 2. The unit weight B is a cubic body, and has a lifting portion (15) and a non-slip convex portion (16) formed on the upper surface thereof, and a non-slip concave portion fitted to the non-slip convex portion (16) on the bottom surface. (1
The weight for crane inspection according to claim 1, wherein 7) is formed.